From e5cf02685b95074a522c73b6a551eb0cf0f6ee1a Mon Sep 17 00:00:00 2001 From: galal-hussein Date: Thu, 16 May 2019 01:05:32 +0200 Subject: [PATCH] Vendor Update --- vendor.conf | 3 + .../github.com/go-sql-driver/mysql/.gitignore | 9 + .../go-sql-driver/mysql/.travis.yml | 107 + vendor/github.com/go-sql-driver/mysql/AUTHORS | 89 + .../go-sql-driver/mysql/CHANGELOG.md | 178 ++ .../go-sql-driver/mysql/CONTRIBUTING.md | 23 + vendor/github.com/go-sql-driver/mysql/LICENSE | 373 ++++ .../github.com/go-sql-driver/mysql/README.md | 490 +++++ .../go-sql-driver/mysql/appengine.go | 19 + vendor/github.com/go-sql-driver/mysql/auth.go | 420 ++++ .../github.com/go-sql-driver/mysql/buffer.go | 147 ++ .../go-sql-driver/mysql/collations.go | 251 +++ .../go-sql-driver/mysql/connection.go | 461 ++++ .../go-sql-driver/mysql/connection_go18.go | 207 ++ .../github.com/go-sql-driver/mysql/const.go | 174 ++ .../github.com/go-sql-driver/mysql/driver.go | 172 ++ vendor/github.com/go-sql-driver/mysql/dsn.go | 611 ++++++ .../github.com/go-sql-driver/mysql/errors.go | 65 + .../github.com/go-sql-driver/mysql/fields.go | 194 ++ .../github.com/go-sql-driver/mysql/infile.go | 182 ++ .../github.com/go-sql-driver/mysql/packets.go | 1286 +++++++++++ .../github.com/go-sql-driver/mysql/result.go | 22 + vendor/github.com/go-sql-driver/mysql/rows.go | 216 ++ .../go-sql-driver/mysql/statement.go | 211 ++ .../go-sql-driver/mysql/transaction.go | 31 + .../github.com/go-sql-driver/mysql/utils.go | 726 +++++++ .../go-sql-driver/mysql/utils_go17.go | 40 + .../go-sql-driver/mysql/utils_go18.go | 50 + .../kvsql/clientv3/driver/generic.go | 6 +- .../kvsql/clientv3/driver/mysql/mysql.go | 128 ++ .../kvsql/clientv3/driver/pgsql/pgsql.go | 117 + .../ibuildthecloud/kvsql/clientv3/kv.go | 30 +- vendor/github.com/lib/pq/.gitignore | 4 + vendor/github.com/lib/pq/.travis.sh | 86 + vendor/github.com/lib/pq/.travis.yml | 50 + vendor/github.com/lib/pq/CONTRIBUTING.md | 29 + vendor/github.com/lib/pq/LICENSE.md | 8 + vendor/github.com/lib/pq/README.md | 95 + vendor/github.com/lib/pq/TESTS.md | 33 + vendor/github.com/lib/pq/array.go | 756 +++++++ vendor/github.com/lib/pq/buf.go | 91 + vendor/github.com/lib/pq/conn.go | 1883 +++++++++++++++++ vendor/github.com/lib/pq/conn_go18.go | 149 ++ vendor/github.com/lib/pq/connector.go | 110 + vendor/github.com/lib/pq/copy.go | 282 +++ vendor/github.com/lib/pq/doc.go | 245 +++ vendor/github.com/lib/pq/encode.go | 602 ++++++ vendor/github.com/lib/pq/error.go | 515 +++++ vendor/github.com/lib/pq/go.mod | 1 + vendor/github.com/lib/pq/notify.go | 797 +++++++ vendor/github.com/lib/pq/oid/doc.go | 6 + vendor/github.com/lib/pq/oid/gen.go | 93 + vendor/github.com/lib/pq/oid/types.go | 343 +++ vendor/github.com/lib/pq/rows.go | 93 + vendor/github.com/lib/pq/scram/scram.go | 264 +++ vendor/github.com/lib/pq/ssl.go | 175 ++ vendor/github.com/lib/pq/ssl_permissions.go | 20 + vendor/github.com/lib/pq/ssl_windows.go | 9 + vendor/github.com/lib/pq/url.go | 76 + vendor/github.com/lib/pq/user_posix.go | 24 + vendor/github.com/lib/pq/user_windows.go | 27 + vendor/github.com/lib/pq/uuid.go | 23 + 62 files changed, 13914 insertions(+), 13 deletions(-) create mode 100644 vendor/github.com/go-sql-driver/mysql/.gitignore create mode 100644 vendor/github.com/go-sql-driver/mysql/.travis.yml create mode 100644 vendor/github.com/go-sql-driver/mysql/AUTHORS create mode 100644 vendor/github.com/go-sql-driver/mysql/CHANGELOG.md create mode 100644 vendor/github.com/go-sql-driver/mysql/CONTRIBUTING.md create mode 100644 vendor/github.com/go-sql-driver/mysql/LICENSE create mode 100644 vendor/github.com/go-sql-driver/mysql/README.md create mode 100644 vendor/github.com/go-sql-driver/mysql/appengine.go create mode 100644 vendor/github.com/go-sql-driver/mysql/auth.go create mode 100644 vendor/github.com/go-sql-driver/mysql/buffer.go create mode 100644 vendor/github.com/go-sql-driver/mysql/collations.go create mode 100644 vendor/github.com/go-sql-driver/mysql/connection.go create mode 100644 vendor/github.com/go-sql-driver/mysql/connection_go18.go create mode 100644 vendor/github.com/go-sql-driver/mysql/const.go create mode 100644 vendor/github.com/go-sql-driver/mysql/driver.go create mode 100644 vendor/github.com/go-sql-driver/mysql/dsn.go create mode 100644 vendor/github.com/go-sql-driver/mysql/errors.go create mode 100644 vendor/github.com/go-sql-driver/mysql/fields.go create mode 100644 vendor/github.com/go-sql-driver/mysql/infile.go create mode 100644 vendor/github.com/go-sql-driver/mysql/packets.go create mode 100644 vendor/github.com/go-sql-driver/mysql/result.go create mode 100644 vendor/github.com/go-sql-driver/mysql/rows.go create mode 100644 vendor/github.com/go-sql-driver/mysql/statement.go create mode 100644 vendor/github.com/go-sql-driver/mysql/transaction.go create mode 100644 vendor/github.com/go-sql-driver/mysql/utils.go create mode 100644 vendor/github.com/go-sql-driver/mysql/utils_go17.go create mode 100644 vendor/github.com/go-sql-driver/mysql/utils_go18.go create mode 100644 vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/mysql/mysql.go create mode 100644 vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/pgsql/pgsql.go create mode 100644 vendor/github.com/lib/pq/.gitignore create mode 100755 vendor/github.com/lib/pq/.travis.sh create mode 100644 vendor/github.com/lib/pq/.travis.yml create mode 100644 vendor/github.com/lib/pq/CONTRIBUTING.md create mode 100644 vendor/github.com/lib/pq/LICENSE.md create mode 100644 vendor/github.com/lib/pq/README.md create mode 100644 vendor/github.com/lib/pq/TESTS.md create mode 100644 vendor/github.com/lib/pq/array.go create mode 100644 vendor/github.com/lib/pq/buf.go create mode 100644 vendor/github.com/lib/pq/conn.go create mode 100644 vendor/github.com/lib/pq/conn_go18.go create mode 100644 vendor/github.com/lib/pq/connector.go create mode 100644 vendor/github.com/lib/pq/copy.go create mode 100644 vendor/github.com/lib/pq/doc.go create mode 100644 vendor/github.com/lib/pq/encode.go create mode 100644 vendor/github.com/lib/pq/error.go create mode 100644 vendor/github.com/lib/pq/go.mod create mode 100644 vendor/github.com/lib/pq/notify.go create mode 100644 vendor/github.com/lib/pq/oid/doc.go create mode 100644 vendor/github.com/lib/pq/oid/gen.go create mode 100644 vendor/github.com/lib/pq/oid/types.go create mode 100644 vendor/github.com/lib/pq/rows.go create mode 100644 vendor/github.com/lib/pq/scram/scram.go create mode 100644 vendor/github.com/lib/pq/ssl.go create mode 100644 vendor/github.com/lib/pq/ssl_permissions.go create mode 100644 vendor/github.com/lib/pq/ssl_windows.go create mode 100644 vendor/github.com/lib/pq/url.go create mode 100644 vendor/github.com/lib/pq/user_posix.go create mode 100644 vendor/github.com/lib/pq/user_windows.go create mode 100644 vendor/github.com/lib/pq/uuid.go diff --git a/vendor.conf b/vendor.conf index 9baa515b1e..38aff97d85 100644 --- a/vendor.conf +++ b/vendor.conf @@ -17,6 +17,8 @@ github.com/natefinch/lumberjack aee4629129445bbdfb69aa565537dcfa16544311 github.com/gorilla/mux v1.6.2 github.com/gorilla/websocket v1.2.0 github.com/mattn/go-sqlite3 v1.9.0 +github.com/go-sql-driver/mysql v1.4.1 +github.com/lib/pq v1.1.1 github.com/patrickmn/go-cache v2.1.0 golang.org/x/crypto a49355c7e3f8fe157a85be2f77e6e269a0f89602 gopkg.in/freddierice/go-losetup.v1 fc9adea44124401d8bfef3a97eaf61b5d44cc2c6 @@ -115,6 +117,7 @@ golang.org/x/oauth2 a6bd8cefa1811bd24b86f8902872e4e8225f74c4 golang.org/x/time f51c12702a4d776e4c1fa9b0fabab841babae631 gopkg.in/inf.v0 3887ee99ecf07df5b447e9b00d9c0b2adaa9f3e4 gopkg.in/yaml.v2 v2.2.1 +github.com/ibuildthecloud/kvsql 788464096f5af361d166858efccf26c12dc5b427 # rootless github.com/rootless-containers/rootlesskit 893c1c3de71f54c301fdb85a7c0dd15c1933c159 diff --git a/vendor/github.com/go-sql-driver/mysql/.gitignore b/vendor/github.com/go-sql-driver/mysql/.gitignore new file mode 100644 index 0000000000..2de28da166 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/.gitignore @@ -0,0 +1,9 @@ +.DS_Store +.DS_Store? +._* +.Spotlight-V100 +.Trashes +Icon? +ehthumbs.db +Thumbs.db +.idea diff --git a/vendor/github.com/go-sql-driver/mysql/.travis.yml b/vendor/github.com/go-sql-driver/mysql/.travis.yml new file mode 100644 index 0000000000..cc1268c361 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/.travis.yml @@ -0,0 +1,107 @@ +sudo: false +language: go +go: + - 1.7.x + - 1.8.x + - 1.9.x + - 1.10.x + - master + +before_install: + - go get golang.org/x/tools/cmd/cover + - go get github.com/mattn/goveralls + +before_script: + - echo -e "[server]\ninnodb_log_file_size=256MB\ninnodb_buffer_pool_size=512MB\nmax_allowed_packet=16MB" | sudo tee -a /etc/mysql/my.cnf + - sudo service mysql restart + - .travis/wait_mysql.sh + - mysql -e 'create database gotest;' + +matrix: + include: + - env: DB=MYSQL8 + sudo: required + dist: trusty + go: 1.10.x + services: + - docker + before_install: + - go get golang.org/x/tools/cmd/cover + - go get github.com/mattn/goveralls + - docker pull mysql:8.0 + - docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret + mysql:8.0 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1 + - cp .travis/docker.cnf ~/.my.cnf + - .travis/wait_mysql.sh + before_script: + - export MYSQL_TEST_USER=gotest + - export MYSQL_TEST_PASS=secret + - export MYSQL_TEST_ADDR=127.0.0.1:3307 + - export MYSQL_TEST_CONCURRENT=1 + + - env: DB=MYSQL57 + sudo: required + dist: trusty + go: 1.10.x + services: + - docker + before_install: + - go get golang.org/x/tools/cmd/cover + - go get github.com/mattn/goveralls + - docker pull mysql:5.7 + - docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret + mysql:5.7 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1 + - cp .travis/docker.cnf ~/.my.cnf + - .travis/wait_mysql.sh + before_script: + - export MYSQL_TEST_USER=gotest + - export MYSQL_TEST_PASS=secret + - export MYSQL_TEST_ADDR=127.0.0.1:3307 + - export MYSQL_TEST_CONCURRENT=1 + + - env: DB=MARIA55 + sudo: required + dist: trusty + go: 1.10.x + services: + - docker + before_install: + - go get golang.org/x/tools/cmd/cover + - go get github.com/mattn/goveralls + - docker pull mariadb:5.5 + - docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret + mariadb:5.5 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1 + - cp .travis/docker.cnf ~/.my.cnf + - .travis/wait_mysql.sh + before_script: + - export MYSQL_TEST_USER=gotest + - export MYSQL_TEST_PASS=secret + - export MYSQL_TEST_ADDR=127.0.0.1:3307 + - export MYSQL_TEST_CONCURRENT=1 + + - env: DB=MARIA10_1 + sudo: required + dist: trusty + go: 1.10.x + services: + - docker + before_install: + - go get golang.org/x/tools/cmd/cover + - go get github.com/mattn/goveralls + - docker pull mariadb:10.1 + - docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret + mariadb:10.1 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1 + - cp .travis/docker.cnf ~/.my.cnf + - .travis/wait_mysql.sh + before_script: + - export MYSQL_TEST_USER=gotest + - export MYSQL_TEST_PASS=secret + - export MYSQL_TEST_ADDR=127.0.0.1:3307 + - export MYSQL_TEST_CONCURRENT=1 + +script: + - go test -v -covermode=count -coverprofile=coverage.out + - go vet ./... + - .travis/gofmt.sh +after_script: + - $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci diff --git a/vendor/github.com/go-sql-driver/mysql/AUTHORS b/vendor/github.com/go-sql-driver/mysql/AUTHORS new file mode 100644 index 0000000000..73ff68fbcf --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/AUTHORS @@ -0,0 +1,89 @@ +# This is the official list of Go-MySQL-Driver authors for copyright purposes. + +# If you are submitting a patch, please add your name or the name of the +# organization which holds the copyright to this list in alphabetical order. + +# Names should be added to this file as +# Name +# The email address is not required for organizations. +# Please keep the list sorted. + + +# Individual Persons + +Aaron Hopkins +Achille Roussel +Alexey Palazhchenko +Andrew Reid +Arne Hormann +Asta Xie +Bulat Gaifullin +Carlos Nieto +Chris Moos +Craig Wilson +Daniel Montoya +Daniel Nichter +Daniël van Eeden +Dave Protasowski +DisposaBoy +Egor Smolyakov +Evan Shaw +Frederick Mayle +Gustavo Kristic +Hajime Nakagami +Hanno Braun +Henri Yandell +Hirotaka Yamamoto +ICHINOSE Shogo +INADA Naoki +Jacek Szwec +James Harr +Jeff Hodges +Jeffrey Charles +Jian Zhen +Joshua Prunier +Julien Lefevre +Julien Schmidt +Justin Li +Justin Nuß +Kamil Dziedzic +Kevin Malachowski +Kieron Woodhouse +Lennart Rudolph +Leonardo YongUk Kim +Linh Tran Tuan +Lion Yang +Luca Looz +Lucas Liu +Luke Scott +Maciej Zimnoch +Michael Woolnough +Nicola Peduzzi +Olivier Mengué +oscarzhao +Paul Bonser +Peter Schultz +Rebecca Chin +Reed Allman +Richard Wilkes +Robert Russell +Runrioter Wung +Shuode Li +Soroush Pour +Stan Putrya +Stanley Gunawan +Xiangyu Hu +Xiaobing Jiang +Xiuming Chen +Zhenye Xie + +# Organizations + +Barracuda Networks, Inc. +Counting Ltd. +Google Inc. +InfoSum Ltd. +Keybase Inc. +Percona LLC +Pivotal Inc. +Stripe Inc. diff --git a/vendor/github.com/go-sql-driver/mysql/CHANGELOG.md b/vendor/github.com/go-sql-driver/mysql/CHANGELOG.md new file mode 100644 index 0000000000..ce1b5330a9 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/CHANGELOG.md @@ -0,0 +1,178 @@ +## Version 1.4.1 (2018-11-14) + +Bugfixes: + + - Fix TIME format for binary columns (#818) + - Fix handling of empty auth plugin names (#835) + - Fix caching_sha2_password with empty password (#826) + - Fix canceled context broke mysqlConn (#862) + - Fix OldAuthSwitchRequest support (#870) + - Fix Auth Response packet for cleartext password (#887) + +## Version 1.4 (2018-06-03) + +Changes: + + - Documentation fixes (#530, #535, #567) + - Refactoring (#575, #579, #580, #581, #603, #615, #704) + - Cache column names (#444) + - Sort the DSN parameters in DSNs generated from a config (#637) + - Allow native password authentication by default (#644) + - Use the default port if it is missing in the DSN (#668) + - Removed the `strict` mode (#676) + - Do not query `max_allowed_packet` by default (#680) + - Dropped support Go 1.6 and lower (#696) + - Updated `ConvertValue()` to match the database/sql/driver implementation (#760) + - Document the usage of `0000-00-00T00:00:00` as the time.Time zero value (#783) + - Improved the compatibility of the authentication system (#807) + +New Features: + + - Multi-Results support (#537) + - `rejectReadOnly` DSN option (#604) + - `context.Context` support (#608, #612, #627, #761) + - Transaction isolation level support (#619, #744) + - Read-Only transactions support (#618, #634) + - `NewConfig` function which initializes a config with default values (#679) + - Implemented the `ColumnType` interfaces (#667, #724) + - Support for custom string types in `ConvertValue` (#623) + - Implemented `NamedValueChecker`, improving support for uint64 with high bit set (#690, #709, #710) + - `caching_sha2_password` authentication plugin support (#794, #800, #801, #802) + - Implemented `driver.SessionResetter` (#779) + - `sha256_password` authentication plugin support (#808) + +Bugfixes: + + - Use the DSN hostname as TLS default ServerName if `tls=true` (#564, #718) + - Fixed LOAD LOCAL DATA INFILE for empty files (#590) + - Removed columns definition cache since it sometimes cached invalid data (#592) + - Don't mutate registered TLS configs (#600) + - Make RegisterTLSConfig concurrency-safe (#613) + - Handle missing auth data in the handshake packet correctly (#646) + - Do not retry queries when data was written to avoid data corruption (#302, #736) + - Cache the connection pointer for error handling before invalidating it (#678) + - Fixed imports for appengine/cloudsql (#700) + - Fix sending STMT_LONG_DATA for 0 byte data (#734) + - Set correct capacity for []bytes read from length-encoded strings (#766) + - Make RegisterDial concurrency-safe (#773) + + +## Version 1.3 (2016-12-01) + +Changes: + + - Go 1.1 is no longer supported + - Use decimals fields in MySQL to format time types (#249) + - Buffer optimizations (#269) + - TLS ServerName defaults to the host (#283) + - Refactoring (#400, #410, #437) + - Adjusted documentation for second generation CloudSQL (#485) + - Documented DSN system var quoting rules (#502) + - Made statement.Close() calls idempotent to avoid errors in Go 1.6+ (#512) + +New Features: + + - Enable microsecond resolution on TIME, DATETIME and TIMESTAMP (#249) + - Support for returning table alias on Columns() (#289, #359, #382) + - Placeholder interpolation, can be actived with the DSN parameter `interpolateParams=true` (#309, #318, #490) + - Support for uint64 parameters with high bit set (#332, #345) + - Cleartext authentication plugin support (#327) + - Exported ParseDSN function and the Config struct (#403, #419, #429) + - Read / Write timeouts (#401) + - Support for JSON field type (#414) + - Support for multi-statements and multi-results (#411, #431) + - DSN parameter to set the driver-side max_allowed_packet value manually (#489) + - Native password authentication plugin support (#494, #524) + +Bugfixes: + + - Fixed handling of queries without columns and rows (#255) + - Fixed a panic when SetKeepAlive() failed (#298) + - Handle ERR packets while reading rows (#321) + - Fixed reading NULL length-encoded integers in MySQL 5.6+ (#349) + - Fixed absolute paths support in LOAD LOCAL DATA INFILE (#356) + - Actually zero out bytes in handshake response (#378) + - Fixed race condition in registering LOAD DATA INFILE handler (#383) + - Fixed tests with MySQL 5.7.9+ (#380) + - QueryUnescape TLS config names (#397) + - Fixed "broken pipe" error by writing to closed socket (#390) + - Fixed LOAD LOCAL DATA INFILE buffering (#424) + - Fixed parsing of floats into float64 when placeholders are used (#434) + - Fixed DSN tests with Go 1.7+ (#459) + - Handle ERR packets while waiting for EOF (#473) + - Invalidate connection on error while discarding additional results (#513) + - Allow terminating packets of length 0 (#516) + + +## Version 1.2 (2014-06-03) + +Changes: + + - We switched back to a "rolling release". `go get` installs the current master branch again + - Version v1 of the driver will not be maintained anymore. Go 1.0 is no longer supported by this driver + - Exported errors to allow easy checking from application code + - Enabled TCP Keepalives on TCP connections + - Optimized INFILE handling (better buffer size calculation, lazy init, ...) + - The DSN parser also checks for a missing separating slash + - Faster binary date / datetime to string formatting + - Also exported the MySQLWarning type + - mysqlConn.Close returns the first error encountered instead of ignoring all errors + - writePacket() automatically writes the packet size to the header + - readPacket() uses an iterative approach instead of the recursive approach to merge splitted packets + +New Features: + + - `RegisterDial` allows the usage of a custom dial function to establish the network connection + - Setting the connection collation is possible with the `collation` DSN parameter. This parameter should be preferred over the `charset` parameter + - Logging of critical errors is configurable with `SetLogger` + - Google CloudSQL support + +Bugfixes: + + - Allow more than 32 parameters in prepared statements + - Various old_password fixes + - Fixed TestConcurrent test to pass Go's race detection + - Fixed appendLengthEncodedInteger for large numbers + - Renamed readLengthEnodedString to readLengthEncodedString and skipLengthEnodedString to skipLengthEncodedString (fixed typo) + + +## Version 1.1 (2013-11-02) + +Changes: + + - Go-MySQL-Driver now requires Go 1.1 + - Connections now use the collation `utf8_general_ci` by default. Adding `&charset=UTF8` to the DSN should not be necessary anymore + - Made closing rows and connections error tolerant. This allows for example deferring rows.Close() without checking for errors + - `[]byte(nil)` is now treated as a NULL value. Before, it was treated like an empty string / `[]byte("")` + - DSN parameter values must now be url.QueryEscape'ed. This allows text values to contain special characters, such as '&'. + - Use the IO buffer also for writing. This results in zero allocations (by the driver) for most queries + - Optimized the buffer for reading + - stmt.Query now caches column metadata + - New Logo + - Changed the copyright header to include all contributors + - Improved the LOAD INFILE documentation + - The driver struct is now exported to make the driver directly accessible + - Refactored the driver tests + - Added more benchmarks and moved all to a separate file + - Other small refactoring + +New Features: + + - Added *old_passwords* support: Required in some cases, but must be enabled by adding `allowOldPasswords=true` to the DSN since it is insecure + - Added a `clientFoundRows` parameter: Return the number of matching rows instead of the number of rows changed on UPDATEs + - Added TLS/SSL support: Use a TLS/SSL encrypted connection to the server. Custom TLS configs can be registered and used + +Bugfixes: + + - Fixed MySQL 4.1 support: MySQL 4.1 sends packets with lengths which differ from the specification + - Convert to DB timezone when inserting `time.Time` + - Splitted packets (more than 16MB) are now merged correctly + - Fixed false positive `io.EOF` errors when the data was fully read + - Avoid panics on reuse of closed connections + - Fixed empty string producing false nil values + - Fixed sign byte for positive TIME fields + + +## Version 1.0 (2013-05-14) + +Initial Release diff --git a/vendor/github.com/go-sql-driver/mysql/CONTRIBUTING.md b/vendor/github.com/go-sql-driver/mysql/CONTRIBUTING.md new file mode 100644 index 0000000000..8fe16bcb49 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/CONTRIBUTING.md @@ -0,0 +1,23 @@ +# Contributing Guidelines + +## Reporting Issues + +Before creating a new Issue, please check first if a similar Issue [already exists](https://github.com/go-sql-driver/mysql/issues?state=open) or was [recently closed](https://github.com/go-sql-driver/mysql/issues?direction=desc&page=1&sort=updated&state=closed). + +## Contributing Code + +By contributing to this project, you share your code under the Mozilla Public License 2, as specified in the LICENSE file. +Don't forget to add yourself to the AUTHORS file. + +### Code Review + +Everyone is invited to review and comment on pull requests. +If it looks fine to you, comment with "LGTM" (Looks good to me). + +If changes are required, notice the reviewers with "PTAL" (Please take another look) after committing the fixes. + +Before merging the Pull Request, at least one [team member](https://github.com/go-sql-driver?tab=members) must have commented with "LGTM". + +## Development Ideas + +If you are looking for ideas for code contributions, please check our [Development Ideas](https://github.com/go-sql-driver/mysql/wiki/Development-Ideas) Wiki page. diff --git a/vendor/github.com/go-sql-driver/mysql/LICENSE b/vendor/github.com/go-sql-driver/mysql/LICENSE new file mode 100644 index 0000000000..14e2f777f6 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/vendor/github.com/go-sql-driver/mysql/README.md b/vendor/github.com/go-sql-driver/mysql/README.md new file mode 100644 index 0000000000..2e9b07eeb2 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/README.md @@ -0,0 +1,490 @@ +# Go-MySQL-Driver + +A MySQL-Driver for Go's [database/sql](https://golang.org/pkg/database/sql/) package + +![Go-MySQL-Driver logo](https://raw.github.com/wiki/go-sql-driver/mysql/gomysql_m.png "Golang Gopher holding the MySQL Dolphin") + +--------------------------------------- + * [Features](#features) + * [Requirements](#requirements) + * [Installation](#installation) + * [Usage](#usage) + * [DSN (Data Source Name)](#dsn-data-source-name) + * [Password](#password) + * [Protocol](#protocol) + * [Address](#address) + * [Parameters](#parameters) + * [Examples](#examples) + * [Connection pool and timeouts](#connection-pool-and-timeouts) + * [context.Context Support](#contextcontext-support) + * [ColumnType Support](#columntype-support) + * [LOAD DATA LOCAL INFILE support](#load-data-local-infile-support) + * [time.Time support](#timetime-support) + * [Unicode support](#unicode-support) + * [Testing / Development](#testing--development) + * [License](#license) + +--------------------------------------- + +## Features + * Lightweight and [fast](https://github.com/go-sql-driver/sql-benchmark "golang MySQL-Driver performance") + * Native Go implementation. No C-bindings, just pure Go + * Connections over TCP/IPv4, TCP/IPv6, Unix domain sockets or [custom protocols](https://godoc.org/github.com/go-sql-driver/mysql#DialFunc) + * Automatic handling of broken connections + * Automatic Connection Pooling *(by database/sql package)* + * Supports queries larger than 16MB + * Full [`sql.RawBytes`](https://golang.org/pkg/database/sql/#RawBytes) support. + * Intelligent `LONG DATA` handling in prepared statements + * Secure `LOAD DATA LOCAL INFILE` support with file Whitelisting and `io.Reader` support + * Optional `time.Time` parsing + * Optional placeholder interpolation + +## Requirements + * Go 1.7 or higher. We aim to support the 3 latest versions of Go. + * MySQL (4.1+), MariaDB, Percona Server, Google CloudSQL or Sphinx (2.2.3+) + +--------------------------------------- + +## Installation +Simple install the package to your [$GOPATH](https://github.com/golang/go/wiki/GOPATH "GOPATH") with the [go tool](https://golang.org/cmd/go/ "go command") from shell: +```bash +$ go get -u github.com/go-sql-driver/mysql +``` +Make sure [Git is installed](https://git-scm.com/downloads) on your machine and in your system's `PATH`. + +## Usage +_Go MySQL Driver_ is an implementation of Go's `database/sql/driver` interface. You only need to import the driver and can use the full [`database/sql`](https://golang.org/pkg/database/sql/) API then. + +Use `mysql` as `driverName` and a valid [DSN](#dsn-data-source-name) as `dataSourceName`: +```go +import "database/sql" +import _ "github.com/go-sql-driver/mysql" + +db, err := sql.Open("mysql", "user:password@/dbname") +``` + +[Examples are available in our Wiki](https://github.com/go-sql-driver/mysql/wiki/Examples "Go-MySQL-Driver Examples"). + + +### DSN (Data Source Name) + +The Data Source Name has a common format, like e.g. [PEAR DB](http://pear.php.net/manual/en/package.database.db.intro-dsn.php) uses it, but without type-prefix (optional parts marked by squared brackets): +``` +[username[:password]@][protocol[(address)]]/dbname[?param1=value1&...¶mN=valueN] +``` + +A DSN in its fullest form: +``` +username:password@protocol(address)/dbname?param=value +``` + +Except for the databasename, all values are optional. So the minimal DSN is: +``` +/dbname +``` + +If you do not want to preselect a database, leave `dbname` empty: +``` +/ +``` +This has the same effect as an empty DSN string: +``` + +``` + +Alternatively, [Config.FormatDSN](https://godoc.org/github.com/go-sql-driver/mysql#Config.FormatDSN) can be used to create a DSN string by filling a struct. + +#### Password +Passwords can consist of any character. Escaping is **not** necessary. + +#### Protocol +See [net.Dial](https://golang.org/pkg/net/#Dial) for more information which networks are available. +In general you should use an Unix domain socket if available and TCP otherwise for best performance. + +#### Address +For TCP and UDP networks, addresses have the form `host[:port]`. +If `port` is omitted, the default port will be used. +If `host` is a literal IPv6 address, it must be enclosed in square brackets. +The functions [net.JoinHostPort](https://golang.org/pkg/net/#JoinHostPort) and [net.SplitHostPort](https://golang.org/pkg/net/#SplitHostPort) manipulate addresses in this form. + +For Unix domain sockets the address is the absolute path to the MySQL-Server-socket, e.g. `/var/run/mysqld/mysqld.sock` or `/tmp/mysql.sock`. + +#### Parameters +*Parameters are case-sensitive!* + +Notice that any of `true`, `TRUE`, `True` or `1` is accepted to stand for a true boolean value. Not surprisingly, false can be specified as any of: `false`, `FALSE`, `False` or `0`. + +##### `allowAllFiles` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +`allowAllFiles=true` disables the file Whitelist for `LOAD DATA LOCAL INFILE` and allows *all* files. +[*Might be insecure!*](http://dev.mysql.com/doc/refman/5.7/en/load-data-local.html) + +##### `allowCleartextPasswords` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +`allowCleartextPasswords=true` allows using the [cleartext client side plugin](http://dev.mysql.com/doc/en/cleartext-authentication-plugin.html) if required by an account, such as one defined with the [PAM authentication plugin](http://dev.mysql.com/doc/en/pam-authentication-plugin.html). Sending passwords in clear text may be a security problem in some configurations. To avoid problems if there is any possibility that the password would be intercepted, clients should connect to MySQL Server using a method that protects the password. Possibilities include [TLS / SSL](#tls), IPsec, or a private network. + +##### `allowNativePasswords` + +``` +Type: bool +Valid Values: true, false +Default: true +``` +`allowNativePasswords=false` disallows the usage of MySQL native password method. + +##### `allowOldPasswords` + +``` +Type: bool +Valid Values: true, false +Default: false +``` +`allowOldPasswords=true` allows the usage of the insecure old password method. This should be avoided, but is necessary in some cases. See also [the old_passwords wiki page](https://github.com/go-sql-driver/mysql/wiki/old_passwords). + +##### `charset` + +``` +Type: string +Valid Values: +Default: none +``` + +Sets the charset used for client-server interaction (`"SET NAMES "`). If multiple charsets are set (separated by a comma), the following charset is used if setting the charset failes. This enables for example support for `utf8mb4` ([introduced in MySQL 5.5.3](http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html)) with fallback to `utf8` for older servers (`charset=utf8mb4,utf8`). + +Usage of the `charset` parameter is discouraged because it issues additional queries to the server. +Unless you need the fallback behavior, please use `collation` instead. + +##### `collation` + +``` +Type: string +Valid Values: +Default: utf8_general_ci +``` + +Sets the collation used for client-server interaction on connection. In contrast to `charset`, `collation` does not issue additional queries. If the specified collation is unavailable on the target server, the connection will fail. + +A list of valid charsets for a server is retrievable with `SHOW COLLATION`. + +##### `clientFoundRows` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +`clientFoundRows=true` causes an UPDATE to return the number of matching rows instead of the number of rows changed. + +##### `columnsWithAlias` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +When `columnsWithAlias` is true, calls to `sql.Rows.Columns()` will return the table alias and the column name separated by a dot. For example: + +``` +SELECT u.id FROM users as u +``` + +will return `u.id` instead of just `id` if `columnsWithAlias=true`. + +##### `interpolateParams` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +If `interpolateParams` is true, placeholders (`?`) in calls to `db.Query()` and `db.Exec()` are interpolated into a single query string with given parameters. This reduces the number of roundtrips, since the driver has to prepare a statement, execute it with given parameters and close the statement again with `interpolateParams=false`. + +*This can not be used together with the multibyte encodings BIG5, CP932, GB2312, GBK or SJIS. These are blacklisted as they may [introduce a SQL injection vulnerability](http://stackoverflow.com/a/12118602/3430118)!* + +##### `loc` + +``` +Type: string +Valid Values: +Default: UTC +``` + +Sets the location for time.Time values (when using `parseTime=true`). *"Local"* sets the system's location. See [time.LoadLocation](https://golang.org/pkg/time/#LoadLocation) for details. + +Note that this sets the location for time.Time values but does not change MySQL's [time_zone setting](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html). For that see the [time_zone system variable](#system-variables), which can also be set as a DSN parameter. + +Please keep in mind, that param values must be [url.QueryEscape](https://golang.org/pkg/net/url/#QueryEscape)'ed. Alternatively you can manually replace the `/` with `%2F`. For example `US/Pacific` would be `loc=US%2FPacific`. + +##### `maxAllowedPacket` +``` +Type: decimal number +Default: 4194304 +``` + +Max packet size allowed in bytes. The default value is 4 MiB and should be adjusted to match the server settings. `maxAllowedPacket=0` can be used to automatically fetch the `max_allowed_packet` variable from server *on every connection*. + +##### `multiStatements` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +Allow multiple statements in one query. While this allows batch queries, it also greatly increases the risk of SQL injections. Only the result of the first query is returned, all other results are silently discarded. + +When `multiStatements` is used, `?` parameters must only be used in the first statement. + +##### `parseTime` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + +`parseTime=true` changes the output type of `DATE` and `DATETIME` values to `time.Time` instead of `[]byte` / `string` +The date or datetime like `0000-00-00 00:00:00` is converted into zero value of `time.Time`. + + +##### `readTimeout` + +``` +Type: duration +Default: 0 +``` + +I/O read timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*. + +##### `rejectReadOnly` + +``` +Type: bool +Valid Values: true, false +Default: false +``` + + +`rejectReadOnly=true` causes the driver to reject read-only connections. This +is for a possible race condition during an automatic failover, where the mysql +client gets connected to a read-only replica after the failover. + +Note that this should be a fairly rare case, as an automatic failover normally +happens when the primary is down, and the race condition shouldn't happen +unless it comes back up online as soon as the failover is kicked off. On the +other hand, when this happens, a MySQL application can get stuck on a +read-only connection until restarted. It is however fairly easy to reproduce, +for example, using a manual failover on AWS Aurora's MySQL-compatible cluster. + +If you are not relying on read-only transactions to reject writes that aren't +supposed to happen, setting this on some MySQL providers (such as AWS Aurora) +is safer for failovers. + +Note that ERROR 1290 can be returned for a `read-only` server and this option will +cause a retry for that error. However the same error number is used for some +other cases. You should ensure your application will never cause an ERROR 1290 +except for `read-only` mode when enabling this option. + + +##### `serverPubKey` + +``` +Type: string +Valid Values: +Default: none +``` + +Server public keys can be registered with [`mysql.RegisterServerPubKey`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterServerPubKey), which can then be used by the assigned name in the DSN. +Public keys are used to transmit encrypted data, e.g. for authentication. +If the server's public key is known, it should be set manually to avoid expensive and potentially insecure transmissions of the public key from the server to the client each time it is required. + + +##### `timeout` + +``` +Type: duration +Default: OS default +``` + +Timeout for establishing connections, aka dial timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*. + + +##### `tls` + +``` +Type: bool / string +Valid Values: true, false, skip-verify, +Default: false +``` + +`tls=true` enables TLS / SSL encrypted connection to the server. Use `skip-verify` if you want to use a self-signed or invalid certificate (server side). Use a custom value registered with [`mysql.RegisterTLSConfig`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterTLSConfig). + + +##### `writeTimeout` + +``` +Type: duration +Default: 0 +``` + +I/O write timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*. + + +##### System Variables + +Any other parameters are interpreted as system variables: + * `=`: `SET =` + * `=`: `SET =` + * `=%27%27`: `SET =''` + +Rules: +* The values for string variables must be quoted with `'`. +* The values must also be [url.QueryEscape](http://golang.org/pkg/net/url/#QueryEscape)'ed! + (which implies values of string variables must be wrapped with `%27`). + +Examples: + * `autocommit=1`: `SET autocommit=1` + * [`time_zone=%27Europe%2FParis%27`](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html): `SET time_zone='Europe/Paris'` + * [`tx_isolation=%27REPEATABLE-READ%27`](https://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html#sysvar_tx_isolation): `SET tx_isolation='REPEATABLE-READ'` + + +#### Examples +``` +user@unix(/path/to/socket)/dbname +``` + +``` +root:pw@unix(/tmp/mysql.sock)/myDatabase?loc=Local +``` + +``` +user:password@tcp(localhost:5555)/dbname?tls=skip-verify&autocommit=true +``` + +Treat warnings as errors by setting the system variable [`sql_mode`](https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html): +``` +user:password@/dbname?sql_mode=TRADITIONAL +``` + +TCP via IPv6: +``` +user:password@tcp([de:ad:be:ef::ca:fe]:80)/dbname?timeout=90s&collation=utf8mb4_unicode_ci +``` + +TCP on a remote host, e.g. Amazon RDS: +``` +id:password@tcp(your-amazonaws-uri.com:3306)/dbname +``` + +Google Cloud SQL on App Engine (First Generation MySQL Server): +``` +user@cloudsql(project-id:instance-name)/dbname +``` + +Google Cloud SQL on App Engine (Second Generation MySQL Server): +``` +user@cloudsql(project-id:regionname:instance-name)/dbname +``` + +TCP using default port (3306) on localhost: +``` +user:password@tcp/dbname?charset=utf8mb4,utf8&sys_var=esc%40ped +``` + +Use the default protocol (tcp) and host (localhost:3306): +``` +user:password@/dbname +``` + +No Database preselected: +``` +user:password@/ +``` + + +### Connection pool and timeouts +The connection pool is managed by Go's database/sql package. For details on how to configure the size of the pool and how long connections stay in the pool see `*DB.SetMaxOpenConns`, `*DB.SetMaxIdleConns`, and `*DB.SetConnMaxLifetime` in the [database/sql documentation](https://golang.org/pkg/database/sql/). The read, write, and dial timeouts for each individual connection are configured with the DSN parameters [`readTimeout`](#readtimeout), [`writeTimeout`](#writetimeout), and [`timeout`](#timeout), respectively. + +## `ColumnType` Support +This driver supports the [`ColumnType` interface](https://golang.org/pkg/database/sql/#ColumnType) introduced in Go 1.8, with the exception of [`ColumnType.Length()`](https://golang.org/pkg/database/sql/#ColumnType.Length), which is currently not supported. + +## `context.Context` Support +Go 1.8 added `database/sql` support for `context.Context`. This driver supports query timeouts and cancellation via contexts. +See [context support in the database/sql package](https://golang.org/doc/go1.8#database_sql) for more details. + + +### `LOAD DATA LOCAL INFILE` support +For this feature you need direct access to the package. Therefore you must change the import path (no `_`): +```go +import "github.com/go-sql-driver/mysql" +``` + +Files must be whitelisted by registering them with `mysql.RegisterLocalFile(filepath)` (recommended) or the Whitelist check must be deactivated by using the DSN parameter `allowAllFiles=true` ([*Might be insecure!*](http://dev.mysql.com/doc/refman/5.7/en/load-data-local.html)). + +To use a `io.Reader` a handler function must be registered with `mysql.RegisterReaderHandler(name, handler)` which returns a `io.Reader` or `io.ReadCloser`. The Reader is available with the filepath `Reader::` then. Choose different names for different handlers and `DeregisterReaderHandler` when you don't need it anymore. + +See the [godoc of Go-MySQL-Driver](https://godoc.org/github.com/go-sql-driver/mysql "golang mysql driver documentation") for details. + + +### `time.Time` support +The default internal output type of MySQL `DATE` and `DATETIME` values is `[]byte` which allows you to scan the value into a `[]byte`, `string` or `sql.RawBytes` variable in your program. + +However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` variables, which is the logical opposite in Go to `DATE` and `DATETIME` in MySQL. You can do that by changing the internal output type from `[]byte` to `time.Time` with the DSN parameter `parseTime=true`. You can set the default [`time.Time` location](https://golang.org/pkg/time/#Location) with the `loc` DSN parameter. + +**Caution:** As of Go 1.1, this makes `time.Time` the only variable type you can scan `DATE` and `DATETIME` values into. This breaks for example [`sql.RawBytes` support](https://github.com/go-sql-driver/mysql/wiki/Examples#rawbytes). + +Alternatively you can use the [`NullTime`](https://godoc.org/github.com/go-sql-driver/mysql#NullTime) type as the scan destination, which works with both `time.Time` and `string` / `[]byte`. + + +### Unicode support +Since version 1.1 Go-MySQL-Driver automatically uses the collation `utf8_general_ci` by default. + +Other collations / charsets can be set using the [`collation`](#collation) DSN parameter. + +Version 1.0 of the driver recommended adding `&charset=utf8` (alias for `SET NAMES utf8`) to the DSN to enable proper UTF-8 support. This is not necessary anymore. The [`collation`](#collation) parameter should be preferred to set another collation / charset than the default. + +See http://dev.mysql.com/doc/refman/5.7/en/charset-unicode.html for more details on MySQL's Unicode support. + +## Testing / Development +To run the driver tests you may need to adjust the configuration. See the [Testing Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details. + +Go-MySQL-Driver is not feature-complete yet. Your help is very appreciated. +If you want to contribute, you can work on an [open issue](https://github.com/go-sql-driver/mysql/issues?state=open) or review a [pull request](https://github.com/go-sql-driver/mysql/pulls). + +See the [Contribution Guidelines](https://github.com/go-sql-driver/mysql/blob/master/CONTRIBUTING.md) for details. + +--------------------------------------- + +## License +Go-MySQL-Driver is licensed under the [Mozilla Public License Version 2.0](https://raw.github.com/go-sql-driver/mysql/master/LICENSE) + +Mozilla summarizes the license scope as follows: +> MPL: The copyleft applies to any files containing MPLed code. + + +That means: + * You can **use** the **unchanged** source code both in private and commercially. + * When distributing, you **must publish** the source code of any **changed files** licensed under the MPL 2.0 under a) the MPL 2.0 itself or b) a compatible license (e.g. GPL 3.0 or Apache License 2.0). + * You **needn't publish** the source code of your library as long as the files licensed under the MPL 2.0 are **unchanged**. + +Please read the [MPL 2.0 FAQ](https://www.mozilla.org/en-US/MPL/2.0/FAQ/) if you have further questions regarding the license. + +You can read the full terms here: [LICENSE](https://raw.github.com/go-sql-driver/mysql/master/LICENSE). + +![Go Gopher and MySQL Dolphin](https://raw.github.com/wiki/go-sql-driver/mysql/go-mysql-driver_m.jpg "Golang Gopher transporting the MySQL Dolphin in a wheelbarrow") + diff --git a/vendor/github.com/go-sql-driver/mysql/appengine.go b/vendor/github.com/go-sql-driver/mysql/appengine.go new file mode 100644 index 0000000000..be41f2ee6d --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/appengine.go @@ -0,0 +1,19 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +// +build appengine + +package mysql + +import ( + "google.golang.org/appengine/cloudsql" +) + +func init() { + RegisterDial("cloudsql", cloudsql.Dial) +} diff --git a/vendor/github.com/go-sql-driver/mysql/auth.go b/vendor/github.com/go-sql-driver/mysql/auth.go new file mode 100644 index 0000000000..14f678a87b --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/auth.go @@ -0,0 +1,420 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "crypto/rand" + "crypto/rsa" + "crypto/sha1" + "crypto/sha256" + "crypto/x509" + "encoding/pem" + "sync" +) + +// server pub keys registry +var ( + serverPubKeyLock sync.RWMutex + serverPubKeyRegistry map[string]*rsa.PublicKey +) + +// RegisterServerPubKey registers a server RSA public key which can be used to +// send data in a secure manner to the server without receiving the public key +// in a potentially insecure way from the server first. +// Registered keys can afterwards be used adding serverPubKey= to the DSN. +// +// Note: The provided rsa.PublicKey instance is exclusively owned by the driver +// after registering it and may not be modified. +// +// data, err := ioutil.ReadFile("mykey.pem") +// if err != nil { +// log.Fatal(err) +// } +// +// block, _ := pem.Decode(data) +// if block == nil || block.Type != "PUBLIC KEY" { +// log.Fatal("failed to decode PEM block containing public key") +// } +// +// pub, err := x509.ParsePKIXPublicKey(block.Bytes) +// if err != nil { +// log.Fatal(err) +// } +// +// if rsaPubKey, ok := pub.(*rsa.PublicKey); ok { +// mysql.RegisterServerPubKey("mykey", rsaPubKey) +// } else { +// log.Fatal("not a RSA public key") +// } +// +func RegisterServerPubKey(name string, pubKey *rsa.PublicKey) { + serverPubKeyLock.Lock() + if serverPubKeyRegistry == nil { + serverPubKeyRegistry = make(map[string]*rsa.PublicKey) + } + + serverPubKeyRegistry[name] = pubKey + serverPubKeyLock.Unlock() +} + +// DeregisterServerPubKey removes the public key registered with the given name. +func DeregisterServerPubKey(name string) { + serverPubKeyLock.Lock() + if serverPubKeyRegistry != nil { + delete(serverPubKeyRegistry, name) + } + serverPubKeyLock.Unlock() +} + +func getServerPubKey(name string) (pubKey *rsa.PublicKey) { + serverPubKeyLock.RLock() + if v, ok := serverPubKeyRegistry[name]; ok { + pubKey = v + } + serverPubKeyLock.RUnlock() + return +} + +// Hash password using pre 4.1 (old password) method +// https://github.com/atcurtis/mariadb/blob/master/mysys/my_rnd.c +type myRnd struct { + seed1, seed2 uint32 +} + +const myRndMaxVal = 0x3FFFFFFF + +// Pseudo random number generator +func newMyRnd(seed1, seed2 uint32) *myRnd { + return &myRnd{ + seed1: seed1 % myRndMaxVal, + seed2: seed2 % myRndMaxVal, + } +} + +// Tested to be equivalent to MariaDB's floating point variant +// http://play.golang.org/p/QHvhd4qved +// http://play.golang.org/p/RG0q4ElWDx +func (r *myRnd) NextByte() byte { + r.seed1 = (r.seed1*3 + r.seed2) % myRndMaxVal + r.seed2 = (r.seed1 + r.seed2 + 33) % myRndMaxVal + + return byte(uint64(r.seed1) * 31 / myRndMaxVal) +} + +// Generate binary hash from byte string using insecure pre 4.1 method +func pwHash(password []byte) (result [2]uint32) { + var add uint32 = 7 + var tmp uint32 + + result[0] = 1345345333 + result[1] = 0x12345671 + + for _, c := range password { + // skip spaces and tabs in password + if c == ' ' || c == '\t' { + continue + } + + tmp = uint32(c) + result[0] ^= (((result[0] & 63) + add) * tmp) + (result[0] << 8) + result[1] += (result[1] << 8) ^ result[0] + add += tmp + } + + // Remove sign bit (1<<31)-1) + result[0] &= 0x7FFFFFFF + result[1] &= 0x7FFFFFFF + + return +} + +// Hash password using insecure pre 4.1 method +func scrambleOldPassword(scramble []byte, password string) []byte { + if len(password) == 0 { + return nil + } + + scramble = scramble[:8] + + hashPw := pwHash([]byte(password)) + hashSc := pwHash(scramble) + + r := newMyRnd(hashPw[0]^hashSc[0], hashPw[1]^hashSc[1]) + + var out [8]byte + for i := range out { + out[i] = r.NextByte() + 64 + } + + mask := r.NextByte() + for i := range out { + out[i] ^= mask + } + + return out[:] +} + +// Hash password using 4.1+ method (SHA1) +func scramblePassword(scramble []byte, password string) []byte { + if len(password) == 0 { + return nil + } + + // stage1Hash = SHA1(password) + crypt := sha1.New() + crypt.Write([]byte(password)) + stage1 := crypt.Sum(nil) + + // scrambleHash = SHA1(scramble + SHA1(stage1Hash)) + // inner Hash + crypt.Reset() + crypt.Write(stage1) + hash := crypt.Sum(nil) + + // outer Hash + crypt.Reset() + crypt.Write(scramble) + crypt.Write(hash) + scramble = crypt.Sum(nil) + + // token = scrambleHash XOR stage1Hash + for i := range scramble { + scramble[i] ^= stage1[i] + } + return scramble +} + +// Hash password using MySQL 8+ method (SHA256) +func scrambleSHA256Password(scramble []byte, password string) []byte { + if len(password) == 0 { + return nil + } + + // XOR(SHA256(password), SHA256(SHA256(SHA256(password)), scramble)) + + crypt := sha256.New() + crypt.Write([]byte(password)) + message1 := crypt.Sum(nil) + + crypt.Reset() + crypt.Write(message1) + message1Hash := crypt.Sum(nil) + + crypt.Reset() + crypt.Write(message1Hash) + crypt.Write(scramble) + message2 := crypt.Sum(nil) + + for i := range message1 { + message1[i] ^= message2[i] + } + + return message1 +} + +func encryptPassword(password string, seed []byte, pub *rsa.PublicKey) ([]byte, error) { + plain := make([]byte, len(password)+1) + copy(plain, password) + for i := range plain { + j := i % len(seed) + plain[i] ^= seed[j] + } + sha1 := sha1.New() + return rsa.EncryptOAEP(sha1, rand.Reader, pub, plain, nil) +} + +func (mc *mysqlConn) sendEncryptedPassword(seed []byte, pub *rsa.PublicKey) error { + enc, err := encryptPassword(mc.cfg.Passwd, seed, pub) + if err != nil { + return err + } + return mc.writeAuthSwitchPacket(enc) +} + +func (mc *mysqlConn) auth(authData []byte, plugin string) ([]byte, error) { + switch plugin { + case "caching_sha2_password": + authResp := scrambleSHA256Password(authData, mc.cfg.Passwd) + return authResp, nil + + case "mysql_old_password": + if !mc.cfg.AllowOldPasswords { + return nil, ErrOldPassword + } + // Note: there are edge cases where this should work but doesn't; + // this is currently "wontfix": + // https://github.com/go-sql-driver/mysql/issues/184 + authResp := append(scrambleOldPassword(authData[:8], mc.cfg.Passwd), 0) + return authResp, nil + + case "mysql_clear_password": + if !mc.cfg.AllowCleartextPasswords { + return nil, ErrCleartextPassword + } + // http://dev.mysql.com/doc/refman/5.7/en/cleartext-authentication-plugin.html + // http://dev.mysql.com/doc/refman/5.7/en/pam-authentication-plugin.html + return append([]byte(mc.cfg.Passwd), 0), nil + + case "mysql_native_password": + if !mc.cfg.AllowNativePasswords { + return nil, ErrNativePassword + } + // https://dev.mysql.com/doc/internals/en/secure-password-authentication.html + // Native password authentication only need and will need 20-byte challenge. + authResp := scramblePassword(authData[:20], mc.cfg.Passwd) + return authResp, nil + + case "sha256_password": + if len(mc.cfg.Passwd) == 0 { + return []byte{0}, nil + } + if mc.cfg.tls != nil || mc.cfg.Net == "unix" { + // write cleartext auth packet + return append([]byte(mc.cfg.Passwd), 0), nil + } + + pubKey := mc.cfg.pubKey + if pubKey == nil { + // request public key from server + return []byte{1}, nil + } + + // encrypted password + enc, err := encryptPassword(mc.cfg.Passwd, authData, pubKey) + return enc, err + + default: + errLog.Print("unknown auth plugin:", plugin) + return nil, ErrUnknownPlugin + } +} + +func (mc *mysqlConn) handleAuthResult(oldAuthData []byte, plugin string) error { + // Read Result Packet + authData, newPlugin, err := mc.readAuthResult() + if err != nil { + return err + } + + // handle auth plugin switch, if requested + if newPlugin != "" { + // If CLIENT_PLUGIN_AUTH capability is not supported, no new cipher is + // sent and we have to keep using the cipher sent in the init packet. + if authData == nil { + authData = oldAuthData + } else { + // copy data from read buffer to owned slice + copy(oldAuthData, authData) + } + + plugin = newPlugin + + authResp, err := mc.auth(authData, plugin) + if err != nil { + return err + } + if err = mc.writeAuthSwitchPacket(authResp); err != nil { + return err + } + + // Read Result Packet + authData, newPlugin, err = mc.readAuthResult() + if err != nil { + return err + } + + // Do not allow to change the auth plugin more than once + if newPlugin != "" { + return ErrMalformPkt + } + } + + switch plugin { + + // https://insidemysql.com/preparing-your-community-connector-for-mysql-8-part-2-sha256/ + case "caching_sha2_password": + switch len(authData) { + case 0: + return nil // auth successful + case 1: + switch authData[0] { + case cachingSha2PasswordFastAuthSuccess: + if err = mc.readResultOK(); err == nil { + return nil // auth successful + } + + case cachingSha2PasswordPerformFullAuthentication: + if mc.cfg.tls != nil || mc.cfg.Net == "unix" { + // write cleartext auth packet + err = mc.writeAuthSwitchPacket(append([]byte(mc.cfg.Passwd), 0)) + if err != nil { + return err + } + } else { + pubKey := mc.cfg.pubKey + if pubKey == nil { + // request public key from server + data := mc.buf.takeSmallBuffer(4 + 1) + data[4] = cachingSha2PasswordRequestPublicKey + mc.writePacket(data) + + // parse public key + data, err := mc.readPacket() + if err != nil { + return err + } + + block, _ := pem.Decode(data[1:]) + pkix, err := x509.ParsePKIXPublicKey(block.Bytes) + if err != nil { + return err + } + pubKey = pkix.(*rsa.PublicKey) + } + + // send encrypted password + err = mc.sendEncryptedPassword(oldAuthData, pubKey) + if err != nil { + return err + } + } + return mc.readResultOK() + + default: + return ErrMalformPkt + } + default: + return ErrMalformPkt + } + + case "sha256_password": + switch len(authData) { + case 0: + return nil // auth successful + default: + block, _ := pem.Decode(authData) + pub, err := x509.ParsePKIXPublicKey(block.Bytes) + if err != nil { + return err + } + + // send encrypted password + err = mc.sendEncryptedPassword(oldAuthData, pub.(*rsa.PublicKey)) + if err != nil { + return err + } + return mc.readResultOK() + } + + default: + return nil // auth successful + } + + return err +} diff --git a/vendor/github.com/go-sql-driver/mysql/buffer.go b/vendor/github.com/go-sql-driver/mysql/buffer.go new file mode 100644 index 0000000000..eb4748bf44 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/buffer.go @@ -0,0 +1,147 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "io" + "net" + "time" +) + +const defaultBufSize = 4096 + +// A buffer which is used for both reading and writing. +// This is possible since communication on each connection is synchronous. +// In other words, we can't write and read simultaneously on the same connection. +// The buffer is similar to bufio.Reader / Writer but zero-copy-ish +// Also highly optimized for this particular use case. +type buffer struct { + buf []byte + nc net.Conn + idx int + length int + timeout time.Duration +} + +func newBuffer(nc net.Conn) buffer { + var b [defaultBufSize]byte + return buffer{ + buf: b[:], + nc: nc, + } +} + +// fill reads into the buffer until at least _need_ bytes are in it +func (b *buffer) fill(need int) error { + n := b.length + + // move existing data to the beginning + if n > 0 && b.idx > 0 { + copy(b.buf[0:n], b.buf[b.idx:]) + } + + // grow buffer if necessary + // TODO: let the buffer shrink again at some point + // Maybe keep the org buf slice and swap back? + if need > len(b.buf) { + // Round up to the next multiple of the default size + newBuf := make([]byte, ((need/defaultBufSize)+1)*defaultBufSize) + copy(newBuf, b.buf) + b.buf = newBuf + } + + b.idx = 0 + + for { + if b.timeout > 0 { + if err := b.nc.SetReadDeadline(time.Now().Add(b.timeout)); err != nil { + return err + } + } + + nn, err := b.nc.Read(b.buf[n:]) + n += nn + + switch err { + case nil: + if n < need { + continue + } + b.length = n + return nil + + case io.EOF: + if n >= need { + b.length = n + return nil + } + return io.ErrUnexpectedEOF + + default: + return err + } + } +} + +// returns next N bytes from buffer. +// The returned slice is only guaranteed to be valid until the next read +func (b *buffer) readNext(need int) ([]byte, error) { + if b.length < need { + // refill + if err := b.fill(need); err != nil { + return nil, err + } + } + + offset := b.idx + b.idx += need + b.length -= need + return b.buf[offset:b.idx], nil +} + +// returns a buffer with the requested size. +// If possible, a slice from the existing buffer is returned. +// Otherwise a bigger buffer is made. +// Only one buffer (total) can be used at a time. +func (b *buffer) takeBuffer(length int) []byte { + if b.length > 0 { + return nil + } + + // test (cheap) general case first + if length <= defaultBufSize || length <= cap(b.buf) { + return b.buf[:length] + } + + if length < maxPacketSize { + b.buf = make([]byte, length) + return b.buf + } + return make([]byte, length) +} + +// shortcut which can be used if the requested buffer is guaranteed to be +// smaller than defaultBufSize +// Only one buffer (total) can be used at a time. +func (b *buffer) takeSmallBuffer(length int) []byte { + if b.length > 0 { + return nil + } + return b.buf[:length] +} + +// takeCompleteBuffer returns the complete existing buffer. +// This can be used if the necessary buffer size is unknown. +// Only one buffer (total) can be used at a time. +func (b *buffer) takeCompleteBuffer() []byte { + if b.length > 0 { + return nil + } + return b.buf +} diff --git a/vendor/github.com/go-sql-driver/mysql/collations.go b/vendor/github.com/go-sql-driver/mysql/collations.go new file mode 100644 index 0000000000..136c9e4d1e --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/collations.go @@ -0,0 +1,251 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2014 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +const defaultCollation = "utf8_general_ci" +const binaryCollation = "binary" + +// A list of available collations mapped to the internal ID. +// To update this map use the following MySQL query: +// SELECT COLLATION_NAME, ID FROM information_schema.COLLATIONS +var collations = map[string]byte{ + "big5_chinese_ci": 1, + "latin2_czech_cs": 2, + "dec8_swedish_ci": 3, + "cp850_general_ci": 4, + "latin1_german1_ci": 5, + "hp8_english_ci": 6, + "koi8r_general_ci": 7, + "latin1_swedish_ci": 8, + "latin2_general_ci": 9, + "swe7_swedish_ci": 10, + "ascii_general_ci": 11, + "ujis_japanese_ci": 12, + "sjis_japanese_ci": 13, + "cp1251_bulgarian_ci": 14, + "latin1_danish_ci": 15, + "hebrew_general_ci": 16, + "tis620_thai_ci": 18, + "euckr_korean_ci": 19, + "latin7_estonian_cs": 20, + "latin2_hungarian_ci": 21, + "koi8u_general_ci": 22, + "cp1251_ukrainian_ci": 23, + "gb2312_chinese_ci": 24, + "greek_general_ci": 25, + "cp1250_general_ci": 26, + "latin2_croatian_ci": 27, + "gbk_chinese_ci": 28, + "cp1257_lithuanian_ci": 29, + "latin5_turkish_ci": 30, + "latin1_german2_ci": 31, + "armscii8_general_ci": 32, + "utf8_general_ci": 33, + "cp1250_czech_cs": 34, + "ucs2_general_ci": 35, + "cp866_general_ci": 36, + "keybcs2_general_ci": 37, + "macce_general_ci": 38, + "macroman_general_ci": 39, + "cp852_general_ci": 40, + "latin7_general_ci": 41, + "latin7_general_cs": 42, + "macce_bin": 43, + "cp1250_croatian_ci": 44, + "utf8mb4_general_ci": 45, + "utf8mb4_bin": 46, + "latin1_bin": 47, + "latin1_general_ci": 48, + "latin1_general_cs": 49, + "cp1251_bin": 50, + "cp1251_general_ci": 51, + "cp1251_general_cs": 52, + "macroman_bin": 53, + "utf16_general_ci": 54, + "utf16_bin": 55, + "utf16le_general_ci": 56, + "cp1256_general_ci": 57, + "cp1257_bin": 58, + "cp1257_general_ci": 59, + "utf32_general_ci": 60, + "utf32_bin": 61, + "utf16le_bin": 62, + "binary": 63, + "armscii8_bin": 64, + "ascii_bin": 65, + "cp1250_bin": 66, + "cp1256_bin": 67, + "cp866_bin": 68, + "dec8_bin": 69, + "greek_bin": 70, + "hebrew_bin": 71, + "hp8_bin": 72, + "keybcs2_bin": 73, + "koi8r_bin": 74, + "koi8u_bin": 75, + "latin2_bin": 77, + "latin5_bin": 78, + "latin7_bin": 79, + "cp850_bin": 80, + "cp852_bin": 81, + "swe7_bin": 82, + "utf8_bin": 83, + "big5_bin": 84, + "euckr_bin": 85, + "gb2312_bin": 86, + "gbk_bin": 87, + "sjis_bin": 88, + "tis620_bin": 89, + "ucs2_bin": 90, + "ujis_bin": 91, + "geostd8_general_ci": 92, + "geostd8_bin": 93, + "latin1_spanish_ci": 94, + "cp932_japanese_ci": 95, + "cp932_bin": 96, + "eucjpms_japanese_ci": 97, + "eucjpms_bin": 98, + "cp1250_polish_ci": 99, + "utf16_unicode_ci": 101, + "utf16_icelandic_ci": 102, + "utf16_latvian_ci": 103, + "utf16_romanian_ci": 104, + "utf16_slovenian_ci": 105, + "utf16_polish_ci": 106, + "utf16_estonian_ci": 107, + "utf16_spanish_ci": 108, + "utf16_swedish_ci": 109, + "utf16_turkish_ci": 110, + "utf16_czech_ci": 111, + "utf16_danish_ci": 112, + "utf16_lithuanian_ci": 113, + "utf16_slovak_ci": 114, + "utf16_spanish2_ci": 115, + "utf16_roman_ci": 116, + "utf16_persian_ci": 117, + "utf16_esperanto_ci": 118, + "utf16_hungarian_ci": 119, + "utf16_sinhala_ci": 120, + "utf16_german2_ci": 121, + "utf16_croatian_ci": 122, + "utf16_unicode_520_ci": 123, + "utf16_vietnamese_ci": 124, + "ucs2_unicode_ci": 128, + "ucs2_icelandic_ci": 129, + "ucs2_latvian_ci": 130, + "ucs2_romanian_ci": 131, + "ucs2_slovenian_ci": 132, + "ucs2_polish_ci": 133, + "ucs2_estonian_ci": 134, + "ucs2_spanish_ci": 135, + "ucs2_swedish_ci": 136, + "ucs2_turkish_ci": 137, + "ucs2_czech_ci": 138, + "ucs2_danish_ci": 139, + "ucs2_lithuanian_ci": 140, + "ucs2_slovak_ci": 141, + "ucs2_spanish2_ci": 142, + "ucs2_roman_ci": 143, + "ucs2_persian_ci": 144, + "ucs2_esperanto_ci": 145, + "ucs2_hungarian_ci": 146, + "ucs2_sinhala_ci": 147, + "ucs2_german2_ci": 148, + "ucs2_croatian_ci": 149, + "ucs2_unicode_520_ci": 150, + "ucs2_vietnamese_ci": 151, + "ucs2_general_mysql500_ci": 159, + "utf32_unicode_ci": 160, + "utf32_icelandic_ci": 161, + "utf32_latvian_ci": 162, + "utf32_romanian_ci": 163, + "utf32_slovenian_ci": 164, + "utf32_polish_ci": 165, + "utf32_estonian_ci": 166, + "utf32_spanish_ci": 167, + "utf32_swedish_ci": 168, + "utf32_turkish_ci": 169, + "utf32_czech_ci": 170, + "utf32_danish_ci": 171, + "utf32_lithuanian_ci": 172, + "utf32_slovak_ci": 173, + "utf32_spanish2_ci": 174, + "utf32_roman_ci": 175, + "utf32_persian_ci": 176, + "utf32_esperanto_ci": 177, + "utf32_hungarian_ci": 178, + "utf32_sinhala_ci": 179, + "utf32_german2_ci": 180, + "utf32_croatian_ci": 181, + "utf32_unicode_520_ci": 182, + "utf32_vietnamese_ci": 183, + "utf8_unicode_ci": 192, + "utf8_icelandic_ci": 193, + "utf8_latvian_ci": 194, + "utf8_romanian_ci": 195, + "utf8_slovenian_ci": 196, + "utf8_polish_ci": 197, + "utf8_estonian_ci": 198, + "utf8_spanish_ci": 199, + "utf8_swedish_ci": 200, + "utf8_turkish_ci": 201, + "utf8_czech_ci": 202, + "utf8_danish_ci": 203, + "utf8_lithuanian_ci": 204, + "utf8_slovak_ci": 205, + "utf8_spanish2_ci": 206, + "utf8_roman_ci": 207, + "utf8_persian_ci": 208, + "utf8_esperanto_ci": 209, + "utf8_hungarian_ci": 210, + "utf8_sinhala_ci": 211, + "utf8_german2_ci": 212, + "utf8_croatian_ci": 213, + "utf8_unicode_520_ci": 214, + "utf8_vietnamese_ci": 215, + "utf8_general_mysql500_ci": 223, + "utf8mb4_unicode_ci": 224, + "utf8mb4_icelandic_ci": 225, + "utf8mb4_latvian_ci": 226, + "utf8mb4_romanian_ci": 227, + "utf8mb4_slovenian_ci": 228, + "utf8mb4_polish_ci": 229, + "utf8mb4_estonian_ci": 230, + "utf8mb4_spanish_ci": 231, + "utf8mb4_swedish_ci": 232, + "utf8mb4_turkish_ci": 233, + "utf8mb4_czech_ci": 234, + "utf8mb4_danish_ci": 235, + "utf8mb4_lithuanian_ci": 236, + "utf8mb4_slovak_ci": 237, + "utf8mb4_spanish2_ci": 238, + "utf8mb4_roman_ci": 239, + "utf8mb4_persian_ci": 240, + "utf8mb4_esperanto_ci": 241, + "utf8mb4_hungarian_ci": 242, + "utf8mb4_sinhala_ci": 243, + "utf8mb4_german2_ci": 244, + "utf8mb4_croatian_ci": 245, + "utf8mb4_unicode_520_ci": 246, + "utf8mb4_vietnamese_ci": 247, +} + +// A blacklist of collations which is unsafe to interpolate parameters. +// These multibyte encodings may contains 0x5c (`\`) in their trailing bytes. +var unsafeCollations = map[string]bool{ + "big5_chinese_ci": true, + "sjis_japanese_ci": true, + "gbk_chinese_ci": true, + "big5_bin": true, + "gb2312_bin": true, + "gbk_bin": true, + "sjis_bin": true, + "cp932_japanese_ci": true, + "cp932_bin": true, +} diff --git a/vendor/github.com/go-sql-driver/mysql/connection.go b/vendor/github.com/go-sql-driver/mysql/connection.go new file mode 100644 index 0000000000..e57061412b --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/connection.go @@ -0,0 +1,461 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "database/sql/driver" + "io" + "net" + "strconv" + "strings" + "time" +) + +// a copy of context.Context for Go 1.7 and earlier +type mysqlContext interface { + Done() <-chan struct{} + Err() error + + // defined in context.Context, but not used in this driver: + // Deadline() (deadline time.Time, ok bool) + // Value(key interface{}) interface{} +} + +type mysqlConn struct { + buf buffer + netConn net.Conn + affectedRows uint64 + insertId uint64 + cfg *Config + maxAllowedPacket int + maxWriteSize int + writeTimeout time.Duration + flags clientFlag + status statusFlag + sequence uint8 + parseTime bool + + // for context support (Go 1.8+) + watching bool + watcher chan<- mysqlContext + closech chan struct{} + finished chan<- struct{} + canceled atomicError // set non-nil if conn is canceled + closed atomicBool // set when conn is closed, before closech is closed +} + +// Handles parameters set in DSN after the connection is established +func (mc *mysqlConn) handleParams() (err error) { + for param, val := range mc.cfg.Params { + switch param { + // Charset + case "charset": + charsets := strings.Split(val, ",") + for i := range charsets { + // ignore errors here - a charset may not exist + err = mc.exec("SET NAMES " + charsets[i]) + if err == nil { + break + } + } + if err != nil { + return + } + + // System Vars + default: + err = mc.exec("SET " + param + "=" + val + "") + if err != nil { + return + } + } + } + + return +} + +func (mc *mysqlConn) markBadConn(err error) error { + if mc == nil { + return err + } + if err != errBadConnNoWrite { + return err + } + return driver.ErrBadConn +} + +func (mc *mysqlConn) Begin() (driver.Tx, error) { + return mc.begin(false) +} + +func (mc *mysqlConn) begin(readOnly bool) (driver.Tx, error) { + if mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + var q string + if readOnly { + q = "START TRANSACTION READ ONLY" + } else { + q = "START TRANSACTION" + } + err := mc.exec(q) + if err == nil { + return &mysqlTx{mc}, err + } + return nil, mc.markBadConn(err) +} + +func (mc *mysqlConn) Close() (err error) { + // Makes Close idempotent + if !mc.closed.IsSet() { + err = mc.writeCommandPacket(comQuit) + } + + mc.cleanup() + + return +} + +// Closes the network connection and unsets internal variables. Do not call this +// function after successfully authentication, call Close instead. This function +// is called before auth or on auth failure because MySQL will have already +// closed the network connection. +func (mc *mysqlConn) cleanup() { + if !mc.closed.TrySet(true) { + return + } + + // Makes cleanup idempotent + close(mc.closech) + if mc.netConn == nil { + return + } + if err := mc.netConn.Close(); err != nil { + errLog.Print(err) + } +} + +func (mc *mysqlConn) error() error { + if mc.closed.IsSet() { + if err := mc.canceled.Value(); err != nil { + return err + } + return ErrInvalidConn + } + return nil +} + +func (mc *mysqlConn) Prepare(query string) (driver.Stmt, error) { + if mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + // Send command + err := mc.writeCommandPacketStr(comStmtPrepare, query) + if err != nil { + return nil, mc.markBadConn(err) + } + + stmt := &mysqlStmt{ + mc: mc, + } + + // Read Result + columnCount, err := stmt.readPrepareResultPacket() + if err == nil { + if stmt.paramCount > 0 { + if err = mc.readUntilEOF(); err != nil { + return nil, err + } + } + + if columnCount > 0 { + err = mc.readUntilEOF() + } + } + + return stmt, err +} + +func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (string, error) { + // Number of ? should be same to len(args) + if strings.Count(query, "?") != len(args) { + return "", driver.ErrSkip + } + + buf := mc.buf.takeCompleteBuffer() + if buf == nil { + // can not take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return "", ErrInvalidConn + } + buf = buf[:0] + argPos := 0 + + for i := 0; i < len(query); i++ { + q := strings.IndexByte(query[i:], '?') + if q == -1 { + buf = append(buf, query[i:]...) + break + } + buf = append(buf, query[i:i+q]...) + i += q + + arg := args[argPos] + argPos++ + + if arg == nil { + buf = append(buf, "NULL"...) + continue + } + + switch v := arg.(type) { + case int64: + buf = strconv.AppendInt(buf, v, 10) + case float64: + buf = strconv.AppendFloat(buf, v, 'g', -1, 64) + case bool: + if v { + buf = append(buf, '1') + } else { + buf = append(buf, '0') + } + case time.Time: + if v.IsZero() { + buf = append(buf, "'0000-00-00'"...) + } else { + v := v.In(mc.cfg.Loc) + v = v.Add(time.Nanosecond * 500) // To round under microsecond + year := v.Year() + year100 := year / 100 + year1 := year % 100 + month := v.Month() + day := v.Day() + hour := v.Hour() + minute := v.Minute() + second := v.Second() + micro := v.Nanosecond() / 1000 + + buf = append(buf, []byte{ + '\'', + digits10[year100], digits01[year100], + digits10[year1], digits01[year1], + '-', + digits10[month], digits01[month], + '-', + digits10[day], digits01[day], + ' ', + digits10[hour], digits01[hour], + ':', + digits10[minute], digits01[minute], + ':', + digits10[second], digits01[second], + }...) + + if micro != 0 { + micro10000 := micro / 10000 + micro100 := micro / 100 % 100 + micro1 := micro % 100 + buf = append(buf, []byte{ + '.', + digits10[micro10000], digits01[micro10000], + digits10[micro100], digits01[micro100], + digits10[micro1], digits01[micro1], + }...) + } + buf = append(buf, '\'') + } + case []byte: + if v == nil { + buf = append(buf, "NULL"...) + } else { + buf = append(buf, "_binary'"...) + if mc.status&statusNoBackslashEscapes == 0 { + buf = escapeBytesBackslash(buf, v) + } else { + buf = escapeBytesQuotes(buf, v) + } + buf = append(buf, '\'') + } + case string: + buf = append(buf, '\'') + if mc.status&statusNoBackslashEscapes == 0 { + buf = escapeStringBackslash(buf, v) + } else { + buf = escapeStringQuotes(buf, v) + } + buf = append(buf, '\'') + default: + return "", driver.ErrSkip + } + + if len(buf)+4 > mc.maxAllowedPacket { + return "", driver.ErrSkip + } + } + if argPos != len(args) { + return "", driver.ErrSkip + } + return string(buf), nil +} + +func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, error) { + if mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + if len(args) != 0 { + if !mc.cfg.InterpolateParams { + return nil, driver.ErrSkip + } + // try to interpolate the parameters to save extra roundtrips for preparing and closing a statement + prepared, err := mc.interpolateParams(query, args) + if err != nil { + return nil, err + } + query = prepared + } + mc.affectedRows = 0 + mc.insertId = 0 + + err := mc.exec(query) + if err == nil { + return &mysqlResult{ + affectedRows: int64(mc.affectedRows), + insertId: int64(mc.insertId), + }, err + } + return nil, mc.markBadConn(err) +} + +// Internal function to execute commands +func (mc *mysqlConn) exec(query string) error { + // Send command + if err := mc.writeCommandPacketStr(comQuery, query); err != nil { + return mc.markBadConn(err) + } + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err != nil { + return err + } + + if resLen > 0 { + // columns + if err := mc.readUntilEOF(); err != nil { + return err + } + + // rows + if err := mc.readUntilEOF(); err != nil { + return err + } + } + + return mc.discardResults() +} + +func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, error) { + return mc.query(query, args) +} + +func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error) { + if mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + if len(args) != 0 { + if !mc.cfg.InterpolateParams { + return nil, driver.ErrSkip + } + // try client-side prepare to reduce roundtrip + prepared, err := mc.interpolateParams(query, args) + if err != nil { + return nil, err + } + query = prepared + } + // Send command + err := mc.writeCommandPacketStr(comQuery, query) + if err == nil { + // Read Result + var resLen int + resLen, err = mc.readResultSetHeaderPacket() + if err == nil { + rows := new(textRows) + rows.mc = mc + + if resLen == 0 { + rows.rs.done = true + + switch err := rows.NextResultSet(); err { + case nil, io.EOF: + return rows, nil + default: + return nil, err + } + } + + // Columns + rows.rs.columns, err = mc.readColumns(resLen) + return rows, err + } + } + return nil, mc.markBadConn(err) +} + +// Gets the value of the given MySQL System Variable +// The returned byte slice is only valid until the next read +func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) { + // Send command + if err := mc.writeCommandPacketStr(comQuery, "SELECT @@"+name); err != nil { + return nil, err + } + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err == nil { + rows := new(textRows) + rows.mc = mc + rows.rs.columns = []mysqlField{{fieldType: fieldTypeVarChar}} + + if resLen > 0 { + // Columns + if err := mc.readUntilEOF(); err != nil { + return nil, err + } + } + + dest := make([]driver.Value, resLen) + if err = rows.readRow(dest); err == nil { + return dest[0].([]byte), mc.readUntilEOF() + } + } + return nil, err +} + +// finish is called when the query has canceled. +func (mc *mysqlConn) cancel(err error) { + mc.canceled.Set(err) + mc.cleanup() +} + +// finish is called when the query has succeeded. +func (mc *mysqlConn) finish() { + if !mc.watching || mc.finished == nil { + return + } + select { + case mc.finished <- struct{}{}: + mc.watching = false + case <-mc.closech: + } +} diff --git a/vendor/github.com/go-sql-driver/mysql/connection_go18.go b/vendor/github.com/go-sql-driver/mysql/connection_go18.go new file mode 100644 index 0000000000..ce52c7d167 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/connection_go18.go @@ -0,0 +1,207 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +// +build go1.8 + +package mysql + +import ( + "context" + "database/sql" + "database/sql/driver" +) + +// Ping implements driver.Pinger interface +func (mc *mysqlConn) Ping(ctx context.Context) (err error) { + if mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return driver.ErrBadConn + } + + if err = mc.watchCancel(ctx); err != nil { + return + } + defer mc.finish() + + if err = mc.writeCommandPacket(comPing); err != nil { + return + } + + return mc.readResultOK() +} + +// BeginTx implements driver.ConnBeginTx interface +func (mc *mysqlConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) { + if err := mc.watchCancel(ctx); err != nil { + return nil, err + } + defer mc.finish() + + if sql.IsolationLevel(opts.Isolation) != sql.LevelDefault { + level, err := mapIsolationLevel(opts.Isolation) + if err != nil { + return nil, err + } + err = mc.exec("SET TRANSACTION ISOLATION LEVEL " + level) + if err != nil { + return nil, err + } + } + + return mc.begin(opts.ReadOnly) +} + +func (mc *mysqlConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) { + dargs, err := namedValueToValue(args) + if err != nil { + return nil, err + } + + if err := mc.watchCancel(ctx); err != nil { + return nil, err + } + + rows, err := mc.query(query, dargs) + if err != nil { + mc.finish() + return nil, err + } + rows.finish = mc.finish + return rows, err +} + +func (mc *mysqlConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) { + dargs, err := namedValueToValue(args) + if err != nil { + return nil, err + } + + if err := mc.watchCancel(ctx); err != nil { + return nil, err + } + defer mc.finish() + + return mc.Exec(query, dargs) +} + +func (mc *mysqlConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) { + if err := mc.watchCancel(ctx); err != nil { + return nil, err + } + + stmt, err := mc.Prepare(query) + mc.finish() + if err != nil { + return nil, err + } + + select { + default: + case <-ctx.Done(): + stmt.Close() + return nil, ctx.Err() + } + return stmt, nil +} + +func (stmt *mysqlStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) { + dargs, err := namedValueToValue(args) + if err != nil { + return nil, err + } + + if err := stmt.mc.watchCancel(ctx); err != nil { + return nil, err + } + + rows, err := stmt.query(dargs) + if err != nil { + stmt.mc.finish() + return nil, err + } + rows.finish = stmt.mc.finish + return rows, err +} + +func (stmt *mysqlStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) { + dargs, err := namedValueToValue(args) + if err != nil { + return nil, err + } + + if err := stmt.mc.watchCancel(ctx); err != nil { + return nil, err + } + defer stmt.mc.finish() + + return stmt.Exec(dargs) +} + +func (mc *mysqlConn) watchCancel(ctx context.Context) error { + if mc.watching { + // Reach here if canceled, + // so the connection is already invalid + mc.cleanup() + return nil + } + // When ctx is already cancelled, don't watch it. + if err := ctx.Err(); err != nil { + return err + } + // When ctx is not cancellable, don't watch it. + if ctx.Done() == nil { + return nil + } + // When watcher is not alive, can't watch it. + if mc.watcher == nil { + return nil + } + + mc.watching = true + mc.watcher <- ctx + return nil +} + +func (mc *mysqlConn) startWatcher() { + watcher := make(chan mysqlContext, 1) + mc.watcher = watcher + finished := make(chan struct{}) + mc.finished = finished + go func() { + for { + var ctx mysqlContext + select { + case ctx = <-watcher: + case <-mc.closech: + return + } + + select { + case <-ctx.Done(): + mc.cancel(ctx.Err()) + case <-finished: + case <-mc.closech: + return + } + } + }() +} + +func (mc *mysqlConn) CheckNamedValue(nv *driver.NamedValue) (err error) { + nv.Value, err = converter{}.ConvertValue(nv.Value) + return +} + +// ResetSession implements driver.SessionResetter. +// (From Go 1.10) +func (mc *mysqlConn) ResetSession(ctx context.Context) error { + if mc.closed.IsSet() { + return driver.ErrBadConn + } + return nil +} diff --git a/vendor/github.com/go-sql-driver/mysql/const.go b/vendor/github.com/go-sql-driver/mysql/const.go new file mode 100644 index 0000000000..b1e6b85efc --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/const.go @@ -0,0 +1,174 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +const ( + defaultAuthPlugin = "mysql_native_password" + defaultMaxAllowedPacket = 4 << 20 // 4 MiB + minProtocolVersion = 10 + maxPacketSize = 1<<24 - 1 + timeFormat = "2006-01-02 15:04:05.999999" +) + +// MySQL constants documentation: +// http://dev.mysql.com/doc/internals/en/client-server-protocol.html + +const ( + iOK byte = 0x00 + iAuthMoreData byte = 0x01 + iLocalInFile byte = 0xfb + iEOF byte = 0xfe + iERR byte = 0xff +) + +// https://dev.mysql.com/doc/internals/en/capability-flags.html#packet-Protocol::CapabilityFlags +type clientFlag uint32 + +const ( + clientLongPassword clientFlag = 1 << iota + clientFoundRows + clientLongFlag + clientConnectWithDB + clientNoSchema + clientCompress + clientODBC + clientLocalFiles + clientIgnoreSpace + clientProtocol41 + clientInteractive + clientSSL + clientIgnoreSIGPIPE + clientTransactions + clientReserved + clientSecureConn + clientMultiStatements + clientMultiResults + clientPSMultiResults + clientPluginAuth + clientConnectAttrs + clientPluginAuthLenEncClientData + clientCanHandleExpiredPasswords + clientSessionTrack + clientDeprecateEOF +) + +const ( + comQuit byte = iota + 1 + comInitDB + comQuery + comFieldList + comCreateDB + comDropDB + comRefresh + comShutdown + comStatistics + comProcessInfo + comConnect + comProcessKill + comDebug + comPing + comTime + comDelayedInsert + comChangeUser + comBinlogDump + comTableDump + comConnectOut + comRegisterSlave + comStmtPrepare + comStmtExecute + comStmtSendLongData + comStmtClose + comStmtReset + comSetOption + comStmtFetch +) + +// https://dev.mysql.com/doc/internals/en/com-query-response.html#packet-Protocol::ColumnType +type fieldType byte + +const ( + fieldTypeDecimal fieldType = iota + fieldTypeTiny + fieldTypeShort + fieldTypeLong + fieldTypeFloat + fieldTypeDouble + fieldTypeNULL + fieldTypeTimestamp + fieldTypeLongLong + fieldTypeInt24 + fieldTypeDate + fieldTypeTime + fieldTypeDateTime + fieldTypeYear + fieldTypeNewDate + fieldTypeVarChar + fieldTypeBit +) +const ( + fieldTypeJSON fieldType = iota + 0xf5 + fieldTypeNewDecimal + fieldTypeEnum + fieldTypeSet + fieldTypeTinyBLOB + fieldTypeMediumBLOB + fieldTypeLongBLOB + fieldTypeBLOB + fieldTypeVarString + fieldTypeString + fieldTypeGeometry +) + +type fieldFlag uint16 + +const ( + flagNotNULL fieldFlag = 1 << iota + flagPriKey + flagUniqueKey + flagMultipleKey + flagBLOB + flagUnsigned + flagZeroFill + flagBinary + flagEnum + flagAutoIncrement + flagTimestamp + flagSet + flagUnknown1 + flagUnknown2 + flagUnknown3 + flagUnknown4 +) + +// http://dev.mysql.com/doc/internals/en/status-flags.html +type statusFlag uint16 + +const ( + statusInTrans statusFlag = 1 << iota + statusInAutocommit + statusReserved // Not in documentation + statusMoreResultsExists + statusNoGoodIndexUsed + statusNoIndexUsed + statusCursorExists + statusLastRowSent + statusDbDropped + statusNoBackslashEscapes + statusMetadataChanged + statusQueryWasSlow + statusPsOutParams + statusInTransReadonly + statusSessionStateChanged +) + +const ( + cachingSha2PasswordRequestPublicKey = 2 + cachingSha2PasswordFastAuthSuccess = 3 + cachingSha2PasswordPerformFullAuthentication = 4 +) diff --git a/vendor/github.com/go-sql-driver/mysql/driver.go b/vendor/github.com/go-sql-driver/mysql/driver.go new file mode 100644 index 0000000000..e9ede2c8da --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/driver.go @@ -0,0 +1,172 @@ +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +// Package mysql provides a MySQL driver for Go's database/sql package. +// +// The driver should be used via the database/sql package: +// +// import "database/sql" +// import _ "github.com/go-sql-driver/mysql" +// +// db, err := sql.Open("mysql", "user:password@/dbname") +// +// See https://github.com/go-sql-driver/mysql#usage for details +package mysql + +import ( + "database/sql" + "database/sql/driver" + "net" + "sync" +) + +// watcher interface is used for context support (From Go 1.8) +type watcher interface { + startWatcher() +} + +// MySQLDriver is exported to make the driver directly accessible. +// In general the driver is used via the database/sql package. +type MySQLDriver struct{} + +// DialFunc is a function which can be used to establish the network connection. +// Custom dial functions must be registered with RegisterDial +type DialFunc func(addr string) (net.Conn, error) + +var ( + dialsLock sync.RWMutex + dials map[string]DialFunc +) + +// RegisterDial registers a custom dial function. It can then be used by the +// network address mynet(addr), where mynet is the registered new network. +// addr is passed as a parameter to the dial function. +func RegisterDial(net string, dial DialFunc) { + dialsLock.Lock() + defer dialsLock.Unlock() + if dials == nil { + dials = make(map[string]DialFunc) + } + dials[net] = dial +} + +// Open new Connection. +// See https://github.com/go-sql-driver/mysql#dsn-data-source-name for how +// the DSN string is formated +func (d MySQLDriver) Open(dsn string) (driver.Conn, error) { + var err error + + // New mysqlConn + mc := &mysqlConn{ + maxAllowedPacket: maxPacketSize, + maxWriteSize: maxPacketSize - 1, + closech: make(chan struct{}), + } + mc.cfg, err = ParseDSN(dsn) + if err != nil { + return nil, err + } + mc.parseTime = mc.cfg.ParseTime + + // Connect to Server + dialsLock.RLock() + dial, ok := dials[mc.cfg.Net] + dialsLock.RUnlock() + if ok { + mc.netConn, err = dial(mc.cfg.Addr) + } else { + nd := net.Dialer{Timeout: mc.cfg.Timeout} + mc.netConn, err = nd.Dial(mc.cfg.Net, mc.cfg.Addr) + } + if err != nil { + return nil, err + } + + // Enable TCP Keepalives on TCP connections + if tc, ok := mc.netConn.(*net.TCPConn); ok { + if err := tc.SetKeepAlive(true); err != nil { + // Don't send COM_QUIT before handshake. + mc.netConn.Close() + mc.netConn = nil + return nil, err + } + } + + // Call startWatcher for context support (From Go 1.8) + if s, ok := interface{}(mc).(watcher); ok { + s.startWatcher() + } + + mc.buf = newBuffer(mc.netConn) + + // Set I/O timeouts + mc.buf.timeout = mc.cfg.ReadTimeout + mc.writeTimeout = mc.cfg.WriteTimeout + + // Reading Handshake Initialization Packet + authData, plugin, err := mc.readHandshakePacket() + if err != nil { + mc.cleanup() + return nil, err + } + if plugin == "" { + plugin = defaultAuthPlugin + } + + // Send Client Authentication Packet + authResp, err := mc.auth(authData, plugin) + if err != nil { + // try the default auth plugin, if using the requested plugin failed + errLog.Print("could not use requested auth plugin '"+plugin+"': ", err.Error()) + plugin = defaultAuthPlugin + authResp, err = mc.auth(authData, plugin) + if err != nil { + mc.cleanup() + return nil, err + } + } + if err = mc.writeHandshakeResponsePacket(authResp, plugin); err != nil { + mc.cleanup() + return nil, err + } + + // Handle response to auth packet, switch methods if possible + if err = mc.handleAuthResult(authData, plugin); err != nil { + // Authentication failed and MySQL has already closed the connection + // (https://dev.mysql.com/doc/internals/en/authentication-fails.html). + // Do not send COM_QUIT, just cleanup and return the error. + mc.cleanup() + return nil, err + } + + if mc.cfg.MaxAllowedPacket > 0 { + mc.maxAllowedPacket = mc.cfg.MaxAllowedPacket + } else { + // Get max allowed packet size + maxap, err := mc.getSystemVar("max_allowed_packet") + if err != nil { + mc.Close() + return nil, err + } + mc.maxAllowedPacket = stringToInt(maxap) - 1 + } + if mc.maxAllowedPacket < maxPacketSize { + mc.maxWriteSize = mc.maxAllowedPacket + } + + // Handle DSN Params + err = mc.handleParams() + if err != nil { + mc.Close() + return nil, err + } + + return mc, nil +} + +func init() { + sql.Register("mysql", &MySQLDriver{}) +} diff --git a/vendor/github.com/go-sql-driver/mysql/dsn.go b/vendor/github.com/go-sql-driver/mysql/dsn.go new file mode 100644 index 0000000000..be014babe3 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/dsn.go @@ -0,0 +1,611 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2016 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "bytes" + "crypto/rsa" + "crypto/tls" + "errors" + "fmt" + "net" + "net/url" + "sort" + "strconv" + "strings" + "time" +) + +var ( + errInvalidDSNUnescaped = errors.New("invalid DSN: did you forget to escape a param value?") + errInvalidDSNAddr = errors.New("invalid DSN: network address not terminated (missing closing brace)") + errInvalidDSNNoSlash = errors.New("invalid DSN: missing the slash separating the database name") + errInvalidDSNUnsafeCollation = errors.New("invalid DSN: interpolateParams can not be used with unsafe collations") +) + +// Config is a configuration parsed from a DSN string. +// If a new Config is created instead of being parsed from a DSN string, +// the NewConfig function should be used, which sets default values. +type Config struct { + User string // Username + Passwd string // Password (requires User) + Net string // Network type + Addr string // Network address (requires Net) + DBName string // Database name + Params map[string]string // Connection parameters + Collation string // Connection collation + Loc *time.Location // Location for time.Time values + MaxAllowedPacket int // Max packet size allowed + ServerPubKey string // Server public key name + pubKey *rsa.PublicKey // Server public key + TLSConfig string // TLS configuration name + tls *tls.Config // TLS configuration + Timeout time.Duration // Dial timeout + ReadTimeout time.Duration // I/O read timeout + WriteTimeout time.Duration // I/O write timeout + + AllowAllFiles bool // Allow all files to be used with LOAD DATA LOCAL INFILE + AllowCleartextPasswords bool // Allows the cleartext client side plugin + AllowNativePasswords bool // Allows the native password authentication method + AllowOldPasswords bool // Allows the old insecure password method + ClientFoundRows bool // Return number of matching rows instead of rows changed + ColumnsWithAlias bool // Prepend table alias to column names + InterpolateParams bool // Interpolate placeholders into query string + MultiStatements bool // Allow multiple statements in one query + ParseTime bool // Parse time values to time.Time + RejectReadOnly bool // Reject read-only connections +} + +// NewConfig creates a new Config and sets default values. +func NewConfig() *Config { + return &Config{ + Collation: defaultCollation, + Loc: time.UTC, + MaxAllowedPacket: defaultMaxAllowedPacket, + AllowNativePasswords: true, + } +} + +func (cfg *Config) normalize() error { + if cfg.InterpolateParams && unsafeCollations[cfg.Collation] { + return errInvalidDSNUnsafeCollation + } + + // Set default network if empty + if cfg.Net == "" { + cfg.Net = "tcp" + } + + // Set default address if empty + if cfg.Addr == "" { + switch cfg.Net { + case "tcp": + cfg.Addr = "127.0.0.1:3306" + case "unix": + cfg.Addr = "/tmp/mysql.sock" + default: + return errors.New("default addr for network '" + cfg.Net + "' unknown") + } + + } else if cfg.Net == "tcp" { + cfg.Addr = ensureHavePort(cfg.Addr) + } + + if cfg.tls != nil { + if cfg.tls.ServerName == "" && !cfg.tls.InsecureSkipVerify { + host, _, err := net.SplitHostPort(cfg.Addr) + if err == nil { + cfg.tls.ServerName = host + } + } + } + + return nil +} + +// FormatDSN formats the given Config into a DSN string which can be passed to +// the driver. +func (cfg *Config) FormatDSN() string { + var buf bytes.Buffer + + // [username[:password]@] + if len(cfg.User) > 0 { + buf.WriteString(cfg.User) + if len(cfg.Passwd) > 0 { + buf.WriteByte(':') + buf.WriteString(cfg.Passwd) + } + buf.WriteByte('@') + } + + // [protocol[(address)]] + if len(cfg.Net) > 0 { + buf.WriteString(cfg.Net) + if len(cfg.Addr) > 0 { + buf.WriteByte('(') + buf.WriteString(cfg.Addr) + buf.WriteByte(')') + } + } + + // /dbname + buf.WriteByte('/') + buf.WriteString(cfg.DBName) + + // [?param1=value1&...¶mN=valueN] + hasParam := false + + if cfg.AllowAllFiles { + hasParam = true + buf.WriteString("?allowAllFiles=true") + } + + if cfg.AllowCleartextPasswords { + if hasParam { + buf.WriteString("&allowCleartextPasswords=true") + } else { + hasParam = true + buf.WriteString("?allowCleartextPasswords=true") + } + } + + if !cfg.AllowNativePasswords { + if hasParam { + buf.WriteString("&allowNativePasswords=false") + } else { + hasParam = true + buf.WriteString("?allowNativePasswords=false") + } + } + + if cfg.AllowOldPasswords { + if hasParam { + buf.WriteString("&allowOldPasswords=true") + } else { + hasParam = true + buf.WriteString("?allowOldPasswords=true") + } + } + + if cfg.ClientFoundRows { + if hasParam { + buf.WriteString("&clientFoundRows=true") + } else { + hasParam = true + buf.WriteString("?clientFoundRows=true") + } + } + + if col := cfg.Collation; col != defaultCollation && len(col) > 0 { + if hasParam { + buf.WriteString("&collation=") + } else { + hasParam = true + buf.WriteString("?collation=") + } + buf.WriteString(col) + } + + if cfg.ColumnsWithAlias { + if hasParam { + buf.WriteString("&columnsWithAlias=true") + } else { + hasParam = true + buf.WriteString("?columnsWithAlias=true") + } + } + + if cfg.InterpolateParams { + if hasParam { + buf.WriteString("&interpolateParams=true") + } else { + hasParam = true + buf.WriteString("?interpolateParams=true") + } + } + + if cfg.Loc != time.UTC && cfg.Loc != nil { + if hasParam { + buf.WriteString("&loc=") + } else { + hasParam = true + buf.WriteString("?loc=") + } + buf.WriteString(url.QueryEscape(cfg.Loc.String())) + } + + if cfg.MultiStatements { + if hasParam { + buf.WriteString("&multiStatements=true") + } else { + hasParam = true + buf.WriteString("?multiStatements=true") + } + } + + if cfg.ParseTime { + if hasParam { + buf.WriteString("&parseTime=true") + } else { + hasParam = true + buf.WriteString("?parseTime=true") + } + } + + if cfg.ReadTimeout > 0 { + if hasParam { + buf.WriteString("&readTimeout=") + } else { + hasParam = true + buf.WriteString("?readTimeout=") + } + buf.WriteString(cfg.ReadTimeout.String()) + } + + if cfg.RejectReadOnly { + if hasParam { + buf.WriteString("&rejectReadOnly=true") + } else { + hasParam = true + buf.WriteString("?rejectReadOnly=true") + } + } + + if len(cfg.ServerPubKey) > 0 { + if hasParam { + buf.WriteString("&serverPubKey=") + } else { + hasParam = true + buf.WriteString("?serverPubKey=") + } + buf.WriteString(url.QueryEscape(cfg.ServerPubKey)) + } + + if cfg.Timeout > 0 { + if hasParam { + buf.WriteString("&timeout=") + } else { + hasParam = true + buf.WriteString("?timeout=") + } + buf.WriteString(cfg.Timeout.String()) + } + + if len(cfg.TLSConfig) > 0 { + if hasParam { + buf.WriteString("&tls=") + } else { + hasParam = true + buf.WriteString("?tls=") + } + buf.WriteString(url.QueryEscape(cfg.TLSConfig)) + } + + if cfg.WriteTimeout > 0 { + if hasParam { + buf.WriteString("&writeTimeout=") + } else { + hasParam = true + buf.WriteString("?writeTimeout=") + } + buf.WriteString(cfg.WriteTimeout.String()) + } + + if cfg.MaxAllowedPacket != defaultMaxAllowedPacket { + if hasParam { + buf.WriteString("&maxAllowedPacket=") + } else { + hasParam = true + buf.WriteString("?maxAllowedPacket=") + } + buf.WriteString(strconv.Itoa(cfg.MaxAllowedPacket)) + + } + + // other params + if cfg.Params != nil { + var params []string + for param := range cfg.Params { + params = append(params, param) + } + sort.Strings(params) + for _, param := range params { + if hasParam { + buf.WriteByte('&') + } else { + hasParam = true + buf.WriteByte('?') + } + + buf.WriteString(param) + buf.WriteByte('=') + buf.WriteString(url.QueryEscape(cfg.Params[param])) + } + } + + return buf.String() +} + +// ParseDSN parses the DSN string to a Config +func ParseDSN(dsn string) (cfg *Config, err error) { + // New config with some default values + cfg = NewConfig() + + // [user[:password]@][net[(addr)]]/dbname[?param1=value1¶mN=valueN] + // Find the last '/' (since the password or the net addr might contain a '/') + foundSlash := false + for i := len(dsn) - 1; i >= 0; i-- { + if dsn[i] == '/' { + foundSlash = true + var j, k int + + // left part is empty if i <= 0 + if i > 0 { + // [username[:password]@][protocol[(address)]] + // Find the last '@' in dsn[:i] + for j = i; j >= 0; j-- { + if dsn[j] == '@' { + // username[:password] + // Find the first ':' in dsn[:j] + for k = 0; k < j; k++ { + if dsn[k] == ':' { + cfg.Passwd = dsn[k+1 : j] + break + } + } + cfg.User = dsn[:k] + + break + } + } + + // [protocol[(address)]] + // Find the first '(' in dsn[j+1:i] + for k = j + 1; k < i; k++ { + if dsn[k] == '(' { + // dsn[i-1] must be == ')' if an address is specified + if dsn[i-1] != ')' { + if strings.ContainsRune(dsn[k+1:i], ')') { + return nil, errInvalidDSNUnescaped + } + return nil, errInvalidDSNAddr + } + cfg.Addr = dsn[k+1 : i-1] + break + } + } + cfg.Net = dsn[j+1 : k] + } + + // dbname[?param1=value1&...¶mN=valueN] + // Find the first '?' in dsn[i+1:] + for j = i + 1; j < len(dsn); j++ { + if dsn[j] == '?' { + if err = parseDSNParams(cfg, dsn[j+1:]); err != nil { + return + } + break + } + } + cfg.DBName = dsn[i+1 : j] + + break + } + } + + if !foundSlash && len(dsn) > 0 { + return nil, errInvalidDSNNoSlash + } + + if err = cfg.normalize(); err != nil { + return nil, err + } + return +} + +// parseDSNParams parses the DSN "query string" +// Values must be url.QueryEscape'ed +func parseDSNParams(cfg *Config, params string) (err error) { + for _, v := range strings.Split(params, "&") { + param := strings.SplitN(v, "=", 2) + if len(param) != 2 { + continue + } + + // cfg params + switch value := param[1]; param[0] { + // Disable INFILE whitelist / enable all files + case "allowAllFiles": + var isBool bool + cfg.AllowAllFiles, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Use cleartext authentication mode (MySQL 5.5.10+) + case "allowCleartextPasswords": + var isBool bool + cfg.AllowCleartextPasswords, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Use native password authentication + case "allowNativePasswords": + var isBool bool + cfg.AllowNativePasswords, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Use old authentication mode (pre MySQL 4.1) + case "allowOldPasswords": + var isBool bool + cfg.AllowOldPasswords, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Switch "rowsAffected" mode + case "clientFoundRows": + var isBool bool + cfg.ClientFoundRows, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Collation + case "collation": + cfg.Collation = value + break + + case "columnsWithAlias": + var isBool bool + cfg.ColumnsWithAlias, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Compression + case "compress": + return errors.New("compression not implemented yet") + + // Enable client side placeholder substitution + case "interpolateParams": + var isBool bool + cfg.InterpolateParams, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Time Location + case "loc": + if value, err = url.QueryUnescape(value); err != nil { + return + } + cfg.Loc, err = time.LoadLocation(value) + if err != nil { + return + } + + // multiple statements in one query + case "multiStatements": + var isBool bool + cfg.MultiStatements, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // time.Time parsing + case "parseTime": + var isBool bool + cfg.ParseTime, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // I/O read Timeout + case "readTimeout": + cfg.ReadTimeout, err = time.ParseDuration(value) + if err != nil { + return + } + + // Reject read-only connections + case "rejectReadOnly": + var isBool bool + cfg.RejectReadOnly, isBool = readBool(value) + if !isBool { + return errors.New("invalid bool value: " + value) + } + + // Server public key + case "serverPubKey": + name, err := url.QueryUnescape(value) + if err != nil { + return fmt.Errorf("invalid value for server pub key name: %v", err) + } + + if pubKey := getServerPubKey(name); pubKey != nil { + cfg.ServerPubKey = name + cfg.pubKey = pubKey + } else { + return errors.New("invalid value / unknown server pub key name: " + name) + } + + // Strict mode + case "strict": + panic("strict mode has been removed. See https://github.com/go-sql-driver/mysql/wiki/strict-mode") + + // Dial Timeout + case "timeout": + cfg.Timeout, err = time.ParseDuration(value) + if err != nil { + return + } + + // TLS-Encryption + case "tls": + boolValue, isBool := readBool(value) + if isBool { + if boolValue { + cfg.TLSConfig = "true" + cfg.tls = &tls.Config{} + } else { + cfg.TLSConfig = "false" + } + } else if vl := strings.ToLower(value); vl == "skip-verify" { + cfg.TLSConfig = vl + cfg.tls = &tls.Config{InsecureSkipVerify: true} + } else { + name, err := url.QueryUnescape(value) + if err != nil { + return fmt.Errorf("invalid value for TLS config name: %v", err) + } + + if tlsConfig := getTLSConfigClone(name); tlsConfig != nil { + cfg.TLSConfig = name + cfg.tls = tlsConfig + } else { + return errors.New("invalid value / unknown config name: " + name) + } + } + + // I/O write Timeout + case "writeTimeout": + cfg.WriteTimeout, err = time.ParseDuration(value) + if err != nil { + return + } + case "maxAllowedPacket": + cfg.MaxAllowedPacket, err = strconv.Atoi(value) + if err != nil { + return + } + default: + // lazy init + if cfg.Params == nil { + cfg.Params = make(map[string]string) + } + + if cfg.Params[param[0]], err = url.QueryUnescape(value); err != nil { + return + } + } + } + + return +} + +func ensureHavePort(addr string) string { + if _, _, err := net.SplitHostPort(addr); err != nil { + return net.JoinHostPort(addr, "3306") + } + return addr +} diff --git a/vendor/github.com/go-sql-driver/mysql/errors.go b/vendor/github.com/go-sql-driver/mysql/errors.go new file mode 100644 index 0000000000..760782ff2f --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/errors.go @@ -0,0 +1,65 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "errors" + "fmt" + "log" + "os" +) + +// Various errors the driver might return. Can change between driver versions. +var ( + ErrInvalidConn = errors.New("invalid connection") + ErrMalformPkt = errors.New("malformed packet") + ErrNoTLS = errors.New("TLS requested but server does not support TLS") + ErrCleartextPassword = errors.New("this user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN") + ErrNativePassword = errors.New("this user requires mysql native password authentication.") + ErrOldPassword = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords") + ErrUnknownPlugin = errors.New("this authentication plugin is not supported") + ErrOldProtocol = errors.New("MySQL server does not support required protocol 41+") + ErrPktSync = errors.New("commands out of sync. You can't run this command now") + ErrPktSyncMul = errors.New("commands out of sync. Did you run multiple statements at once?") + ErrPktTooLarge = errors.New("packet for query is too large. Try adjusting the 'max_allowed_packet' variable on the server") + ErrBusyBuffer = errors.New("busy buffer") + + // errBadConnNoWrite is used for connection errors where nothing was sent to the database yet. + // If this happens first in a function starting a database interaction, it should be replaced by driver.ErrBadConn + // to trigger a resend. + // See https://github.com/go-sql-driver/mysql/pull/302 + errBadConnNoWrite = errors.New("bad connection") +) + +var errLog = Logger(log.New(os.Stderr, "[mysql] ", log.Ldate|log.Ltime|log.Lshortfile)) + +// Logger is used to log critical error messages. +type Logger interface { + Print(v ...interface{}) +} + +// SetLogger is used to set the logger for critical errors. +// The initial logger is os.Stderr. +func SetLogger(logger Logger) error { + if logger == nil { + return errors.New("logger is nil") + } + errLog = logger + return nil +} + +// MySQLError is an error type which represents a single MySQL error +type MySQLError struct { + Number uint16 + Message string +} + +func (me *MySQLError) Error() string { + return fmt.Sprintf("Error %d: %s", me.Number, me.Message) +} diff --git a/vendor/github.com/go-sql-driver/mysql/fields.go b/vendor/github.com/go-sql-driver/mysql/fields.go new file mode 100644 index 0000000000..e1e2ece4b1 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/fields.go @@ -0,0 +1,194 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "database/sql" + "reflect" +) + +func (mf *mysqlField) typeDatabaseName() string { + switch mf.fieldType { + case fieldTypeBit: + return "BIT" + case fieldTypeBLOB: + if mf.charSet != collations[binaryCollation] { + return "TEXT" + } + return "BLOB" + case fieldTypeDate: + return "DATE" + case fieldTypeDateTime: + return "DATETIME" + case fieldTypeDecimal: + return "DECIMAL" + case fieldTypeDouble: + return "DOUBLE" + case fieldTypeEnum: + return "ENUM" + case fieldTypeFloat: + return "FLOAT" + case fieldTypeGeometry: + return "GEOMETRY" + case fieldTypeInt24: + return "MEDIUMINT" + case fieldTypeJSON: + return "JSON" + case fieldTypeLong: + return "INT" + case fieldTypeLongBLOB: + if mf.charSet != collations[binaryCollation] { + return "LONGTEXT" + } + return "LONGBLOB" + case fieldTypeLongLong: + return "BIGINT" + case fieldTypeMediumBLOB: + if mf.charSet != collations[binaryCollation] { + return "MEDIUMTEXT" + } + return "MEDIUMBLOB" + case fieldTypeNewDate: + return "DATE" + case fieldTypeNewDecimal: + return "DECIMAL" + case fieldTypeNULL: + return "NULL" + case fieldTypeSet: + return "SET" + case fieldTypeShort: + return "SMALLINT" + case fieldTypeString: + if mf.charSet == collations[binaryCollation] { + return "BINARY" + } + return "CHAR" + case fieldTypeTime: + return "TIME" + case fieldTypeTimestamp: + return "TIMESTAMP" + case fieldTypeTiny: + return "TINYINT" + case fieldTypeTinyBLOB: + if mf.charSet != collations[binaryCollation] { + return "TINYTEXT" + } + return "TINYBLOB" + case fieldTypeVarChar: + if mf.charSet == collations[binaryCollation] { + return "VARBINARY" + } + return "VARCHAR" + case fieldTypeVarString: + if mf.charSet == collations[binaryCollation] { + return "VARBINARY" + } + return "VARCHAR" + case fieldTypeYear: + return "YEAR" + default: + return "" + } +} + +var ( + scanTypeFloat32 = reflect.TypeOf(float32(0)) + scanTypeFloat64 = reflect.TypeOf(float64(0)) + scanTypeInt8 = reflect.TypeOf(int8(0)) + scanTypeInt16 = reflect.TypeOf(int16(0)) + scanTypeInt32 = reflect.TypeOf(int32(0)) + scanTypeInt64 = reflect.TypeOf(int64(0)) + scanTypeNullFloat = reflect.TypeOf(sql.NullFloat64{}) + scanTypeNullInt = reflect.TypeOf(sql.NullInt64{}) + scanTypeNullTime = reflect.TypeOf(NullTime{}) + scanTypeUint8 = reflect.TypeOf(uint8(0)) + scanTypeUint16 = reflect.TypeOf(uint16(0)) + scanTypeUint32 = reflect.TypeOf(uint32(0)) + scanTypeUint64 = reflect.TypeOf(uint64(0)) + scanTypeRawBytes = reflect.TypeOf(sql.RawBytes{}) + scanTypeUnknown = reflect.TypeOf(new(interface{})) +) + +type mysqlField struct { + tableName string + name string + length uint32 + flags fieldFlag + fieldType fieldType + decimals byte + charSet uint8 +} + +func (mf *mysqlField) scanType() reflect.Type { + switch mf.fieldType { + case fieldTypeTiny: + if mf.flags&flagNotNULL != 0 { + if mf.flags&flagUnsigned != 0 { + return scanTypeUint8 + } + return scanTypeInt8 + } + return scanTypeNullInt + + case fieldTypeShort, fieldTypeYear: + if mf.flags&flagNotNULL != 0 { + if mf.flags&flagUnsigned != 0 { + return scanTypeUint16 + } + return scanTypeInt16 + } + return scanTypeNullInt + + case fieldTypeInt24, fieldTypeLong: + if mf.flags&flagNotNULL != 0 { + if mf.flags&flagUnsigned != 0 { + return scanTypeUint32 + } + return scanTypeInt32 + } + return scanTypeNullInt + + case fieldTypeLongLong: + if mf.flags&flagNotNULL != 0 { + if mf.flags&flagUnsigned != 0 { + return scanTypeUint64 + } + return scanTypeInt64 + } + return scanTypeNullInt + + case fieldTypeFloat: + if mf.flags&flagNotNULL != 0 { + return scanTypeFloat32 + } + return scanTypeNullFloat + + case fieldTypeDouble: + if mf.flags&flagNotNULL != 0 { + return scanTypeFloat64 + } + return scanTypeNullFloat + + case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar, + fieldTypeBit, fieldTypeEnum, fieldTypeSet, fieldTypeTinyBLOB, + fieldTypeMediumBLOB, fieldTypeLongBLOB, fieldTypeBLOB, + fieldTypeVarString, fieldTypeString, fieldTypeGeometry, fieldTypeJSON, + fieldTypeTime: + return scanTypeRawBytes + + case fieldTypeDate, fieldTypeNewDate, + fieldTypeTimestamp, fieldTypeDateTime: + // NullTime is always returned for more consistent behavior as it can + // handle both cases of parseTime regardless if the field is nullable. + return scanTypeNullTime + + default: + return scanTypeUnknown + } +} diff --git a/vendor/github.com/go-sql-driver/mysql/infile.go b/vendor/github.com/go-sql-driver/mysql/infile.go new file mode 100644 index 0000000000..273cb0ba50 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/infile.go @@ -0,0 +1,182 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "fmt" + "io" + "os" + "strings" + "sync" +) + +var ( + fileRegister map[string]bool + fileRegisterLock sync.RWMutex + readerRegister map[string]func() io.Reader + readerRegisterLock sync.RWMutex +) + +// RegisterLocalFile adds the given file to the file whitelist, +// so that it can be used by "LOAD DATA LOCAL INFILE ". +// Alternatively you can allow the use of all local files with +// the DSN parameter 'allowAllFiles=true' +// +// filePath := "/home/gopher/data.csv" +// mysql.RegisterLocalFile(filePath) +// err := db.Exec("LOAD DATA LOCAL INFILE '" + filePath + "' INTO TABLE foo") +// if err != nil { +// ... +// +func RegisterLocalFile(filePath string) { + fileRegisterLock.Lock() + // lazy map init + if fileRegister == nil { + fileRegister = make(map[string]bool) + } + + fileRegister[strings.Trim(filePath, `"`)] = true + fileRegisterLock.Unlock() +} + +// DeregisterLocalFile removes the given filepath from the whitelist. +func DeregisterLocalFile(filePath string) { + fileRegisterLock.Lock() + delete(fileRegister, strings.Trim(filePath, `"`)) + fileRegisterLock.Unlock() +} + +// RegisterReaderHandler registers a handler function which is used +// to receive a io.Reader. +// The Reader can be used by "LOAD DATA LOCAL INFILE Reader::". +// If the handler returns a io.ReadCloser Close() is called when the +// request is finished. +// +// mysql.RegisterReaderHandler("data", func() io.Reader { +// var csvReader io.Reader // Some Reader that returns CSV data +// ... // Open Reader here +// return csvReader +// }) +// err := db.Exec("LOAD DATA LOCAL INFILE 'Reader::data' INTO TABLE foo") +// if err != nil { +// ... +// +func RegisterReaderHandler(name string, handler func() io.Reader) { + readerRegisterLock.Lock() + // lazy map init + if readerRegister == nil { + readerRegister = make(map[string]func() io.Reader) + } + + readerRegister[name] = handler + readerRegisterLock.Unlock() +} + +// DeregisterReaderHandler removes the ReaderHandler function with +// the given name from the registry. +func DeregisterReaderHandler(name string) { + readerRegisterLock.Lock() + delete(readerRegister, name) + readerRegisterLock.Unlock() +} + +func deferredClose(err *error, closer io.Closer) { + closeErr := closer.Close() + if *err == nil { + *err = closeErr + } +} + +func (mc *mysqlConn) handleInFileRequest(name string) (err error) { + var rdr io.Reader + var data []byte + packetSize := 16 * 1024 // 16KB is small enough for disk readahead and large enough for TCP + if mc.maxWriteSize < packetSize { + packetSize = mc.maxWriteSize + } + + if idx := strings.Index(name, "Reader::"); idx == 0 || (idx > 0 && name[idx-1] == '/') { // io.Reader + // The server might return an an absolute path. See issue #355. + name = name[idx+8:] + + readerRegisterLock.RLock() + handler, inMap := readerRegister[name] + readerRegisterLock.RUnlock() + + if inMap { + rdr = handler() + if rdr != nil { + if cl, ok := rdr.(io.Closer); ok { + defer deferredClose(&err, cl) + } + } else { + err = fmt.Errorf("Reader '%s' is ", name) + } + } else { + err = fmt.Errorf("Reader '%s' is not registered", name) + } + } else { // File + name = strings.Trim(name, `"`) + fileRegisterLock.RLock() + fr := fileRegister[name] + fileRegisterLock.RUnlock() + if mc.cfg.AllowAllFiles || fr { + var file *os.File + var fi os.FileInfo + + if file, err = os.Open(name); err == nil { + defer deferredClose(&err, file) + + // get file size + if fi, err = file.Stat(); err == nil { + rdr = file + if fileSize := int(fi.Size()); fileSize < packetSize { + packetSize = fileSize + } + } + } + } else { + err = fmt.Errorf("local file '%s' is not registered", name) + } + } + + // send content packets + // if packetSize == 0, the Reader contains no data + if err == nil && packetSize > 0 { + data := make([]byte, 4+packetSize) + var n int + for err == nil { + n, err = rdr.Read(data[4:]) + if n > 0 { + if ioErr := mc.writePacket(data[:4+n]); ioErr != nil { + return ioErr + } + } + } + if err == io.EOF { + err = nil + } + } + + // send empty packet (termination) + if data == nil { + data = make([]byte, 4) + } + if ioErr := mc.writePacket(data[:4]); ioErr != nil { + return ioErr + } + + // read OK packet + if err == nil { + return mc.readResultOK() + } + + mc.readPacket() + return err +} diff --git a/vendor/github.com/go-sql-driver/mysql/packets.go b/vendor/github.com/go-sql-driver/mysql/packets.go new file mode 100644 index 0000000000..9ed6408509 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/packets.go @@ -0,0 +1,1286 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "bytes" + "crypto/tls" + "database/sql/driver" + "encoding/binary" + "errors" + "fmt" + "io" + "math" + "time" +) + +// Packets documentation: +// http://dev.mysql.com/doc/internals/en/client-server-protocol.html + +// Read packet to buffer 'data' +func (mc *mysqlConn) readPacket() ([]byte, error) { + var prevData []byte + for { + // read packet header + data, err := mc.buf.readNext(4) + if err != nil { + if cerr := mc.canceled.Value(); cerr != nil { + return nil, cerr + } + errLog.Print(err) + mc.Close() + return nil, ErrInvalidConn + } + + // packet length [24 bit] + pktLen := int(uint32(data[0]) | uint32(data[1])<<8 | uint32(data[2])<<16) + + // check packet sync [8 bit] + if data[3] != mc.sequence { + if data[3] > mc.sequence { + return nil, ErrPktSyncMul + } + return nil, ErrPktSync + } + mc.sequence++ + + // packets with length 0 terminate a previous packet which is a + // multiple of (2^24)−1 bytes long + if pktLen == 0 { + // there was no previous packet + if prevData == nil { + errLog.Print(ErrMalformPkt) + mc.Close() + return nil, ErrInvalidConn + } + + return prevData, nil + } + + // read packet body [pktLen bytes] + data, err = mc.buf.readNext(pktLen) + if err != nil { + if cerr := mc.canceled.Value(); cerr != nil { + return nil, cerr + } + errLog.Print(err) + mc.Close() + return nil, ErrInvalidConn + } + + // return data if this was the last packet + if pktLen < maxPacketSize { + // zero allocations for non-split packets + if prevData == nil { + return data, nil + } + + return append(prevData, data...), nil + } + + prevData = append(prevData, data...) + } +} + +// Write packet buffer 'data' +func (mc *mysqlConn) writePacket(data []byte) error { + pktLen := len(data) - 4 + + if pktLen > mc.maxAllowedPacket { + return ErrPktTooLarge + } + + for { + var size int + if pktLen >= maxPacketSize { + data[0] = 0xff + data[1] = 0xff + data[2] = 0xff + size = maxPacketSize + } else { + data[0] = byte(pktLen) + data[1] = byte(pktLen >> 8) + data[2] = byte(pktLen >> 16) + size = pktLen + } + data[3] = mc.sequence + + // Write packet + if mc.writeTimeout > 0 { + if err := mc.netConn.SetWriteDeadline(time.Now().Add(mc.writeTimeout)); err != nil { + return err + } + } + + n, err := mc.netConn.Write(data[:4+size]) + if err == nil && n == 4+size { + mc.sequence++ + if size != maxPacketSize { + return nil + } + pktLen -= size + data = data[size:] + continue + } + + // Handle error + if err == nil { // n != len(data) + mc.cleanup() + errLog.Print(ErrMalformPkt) + } else { + if cerr := mc.canceled.Value(); cerr != nil { + return cerr + } + if n == 0 && pktLen == len(data)-4 { + // only for the first loop iteration when nothing was written yet + return errBadConnNoWrite + } + mc.cleanup() + errLog.Print(err) + } + return ErrInvalidConn + } +} + +/****************************************************************************** +* Initialization Process * +******************************************************************************/ + +// Handshake Initialization Packet +// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::Handshake +func (mc *mysqlConn) readHandshakePacket() (data []byte, plugin string, err error) { + data, err = mc.readPacket() + if err != nil { + // for init we can rewrite this to ErrBadConn for sql.Driver to retry, since + // in connection initialization we don't risk retrying non-idempotent actions. + if err == ErrInvalidConn { + return nil, "", driver.ErrBadConn + } + return + } + + if data[0] == iERR { + return nil, "", mc.handleErrorPacket(data) + } + + // protocol version [1 byte] + if data[0] < minProtocolVersion { + return nil, "", fmt.Errorf( + "unsupported protocol version %d. Version %d or higher is required", + data[0], + minProtocolVersion, + ) + } + + // server version [null terminated string] + // connection id [4 bytes] + pos := 1 + bytes.IndexByte(data[1:], 0x00) + 1 + 4 + + // first part of the password cipher [8 bytes] + authData := data[pos : pos+8] + + // (filler) always 0x00 [1 byte] + pos += 8 + 1 + + // capability flags (lower 2 bytes) [2 bytes] + mc.flags = clientFlag(binary.LittleEndian.Uint16(data[pos : pos+2])) + if mc.flags&clientProtocol41 == 0 { + return nil, "", ErrOldProtocol + } + if mc.flags&clientSSL == 0 && mc.cfg.tls != nil { + return nil, "", ErrNoTLS + } + pos += 2 + + if len(data) > pos { + // character set [1 byte] + // status flags [2 bytes] + // capability flags (upper 2 bytes) [2 bytes] + // length of auth-plugin-data [1 byte] + // reserved (all [00]) [10 bytes] + pos += 1 + 2 + 2 + 1 + 10 + + // second part of the password cipher [mininum 13 bytes], + // where len=MAX(13, length of auth-plugin-data - 8) + // + // The web documentation is ambiguous about the length. However, + // according to mysql-5.7/sql/auth/sql_authentication.cc line 538, + // the 13th byte is "\0 byte, terminating the second part of + // a scramble". So the second part of the password cipher is + // a NULL terminated string that's at least 13 bytes with the + // last byte being NULL. + // + // The official Python library uses the fixed length 12 + // which seems to work but technically could have a hidden bug. + authData = append(authData, data[pos:pos+12]...) + pos += 13 + + // EOF if version (>= 5.5.7 and < 5.5.10) or (>= 5.6.0 and < 5.6.2) + // \NUL otherwise + if end := bytes.IndexByte(data[pos:], 0x00); end != -1 { + plugin = string(data[pos : pos+end]) + } else { + plugin = string(data[pos:]) + } + + // make a memory safe copy of the cipher slice + var b [20]byte + copy(b[:], authData) + return b[:], plugin, nil + } + + // make a memory safe copy of the cipher slice + var b [8]byte + copy(b[:], authData) + return b[:], plugin, nil +} + +// Client Authentication Packet +// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::HandshakeResponse +func (mc *mysqlConn) writeHandshakeResponsePacket(authResp []byte, plugin string) error { + // Adjust client flags based on server support + clientFlags := clientProtocol41 | + clientSecureConn | + clientLongPassword | + clientTransactions | + clientLocalFiles | + clientPluginAuth | + clientMultiResults | + mc.flags&clientLongFlag + + if mc.cfg.ClientFoundRows { + clientFlags |= clientFoundRows + } + + // To enable TLS / SSL + if mc.cfg.tls != nil { + clientFlags |= clientSSL + } + + if mc.cfg.MultiStatements { + clientFlags |= clientMultiStatements + } + + // encode length of the auth plugin data + var authRespLEIBuf [9]byte + authRespLen := len(authResp) + authRespLEI := appendLengthEncodedInteger(authRespLEIBuf[:0], uint64(authRespLen)) + if len(authRespLEI) > 1 { + // if the length can not be written in 1 byte, it must be written as a + // length encoded integer + clientFlags |= clientPluginAuthLenEncClientData + } + + pktLen := 4 + 4 + 1 + 23 + len(mc.cfg.User) + 1 + len(authRespLEI) + len(authResp) + 21 + 1 + + // To specify a db name + if n := len(mc.cfg.DBName); n > 0 { + clientFlags |= clientConnectWithDB + pktLen += n + 1 + } + + // Calculate packet length and get buffer with that size + data := mc.buf.takeSmallBuffer(pktLen + 4) + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // ClientFlags [32 bit] + data[4] = byte(clientFlags) + data[5] = byte(clientFlags >> 8) + data[6] = byte(clientFlags >> 16) + data[7] = byte(clientFlags >> 24) + + // MaxPacketSize [32 bit] (none) + data[8] = 0x00 + data[9] = 0x00 + data[10] = 0x00 + data[11] = 0x00 + + // Charset [1 byte] + var found bool + data[12], found = collations[mc.cfg.Collation] + if !found { + // Note possibility for false negatives: + // could be triggered although the collation is valid if the + // collations map does not contain entries the server supports. + return errors.New("unknown collation") + } + + // SSL Connection Request Packet + // http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::SSLRequest + if mc.cfg.tls != nil { + // Send TLS / SSL request packet + if err := mc.writePacket(data[:(4+4+1+23)+4]); err != nil { + return err + } + + // Switch to TLS + tlsConn := tls.Client(mc.netConn, mc.cfg.tls) + if err := tlsConn.Handshake(); err != nil { + return err + } + mc.netConn = tlsConn + mc.buf.nc = tlsConn + } + + // Filler [23 bytes] (all 0x00) + pos := 13 + for ; pos < 13+23; pos++ { + data[pos] = 0 + } + + // User [null terminated string] + if len(mc.cfg.User) > 0 { + pos += copy(data[pos:], mc.cfg.User) + } + data[pos] = 0x00 + pos++ + + // Auth Data [length encoded integer] + pos += copy(data[pos:], authRespLEI) + pos += copy(data[pos:], authResp) + + // Databasename [null terminated string] + if len(mc.cfg.DBName) > 0 { + pos += copy(data[pos:], mc.cfg.DBName) + data[pos] = 0x00 + pos++ + } + + pos += copy(data[pos:], plugin) + data[pos] = 0x00 + pos++ + + // Send Auth packet + return mc.writePacket(data[:pos]) +} + +// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse +func (mc *mysqlConn) writeAuthSwitchPacket(authData []byte) error { + pktLen := 4 + len(authData) + data := mc.buf.takeSmallBuffer(pktLen) + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // Add the auth data [EOF] + copy(data[4:], authData) + return mc.writePacket(data) +} + +/****************************************************************************** +* Command Packets * +******************************************************************************/ + +func (mc *mysqlConn) writeCommandPacket(command byte) error { + // Reset Packet Sequence + mc.sequence = 0 + + data := mc.buf.takeSmallBuffer(4 + 1) + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // Add command byte + data[4] = command + + // Send CMD packet + return mc.writePacket(data) +} + +func (mc *mysqlConn) writeCommandPacketStr(command byte, arg string) error { + // Reset Packet Sequence + mc.sequence = 0 + + pktLen := 1 + len(arg) + data := mc.buf.takeBuffer(pktLen + 4) + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // Add command byte + data[4] = command + + // Add arg + copy(data[5:], arg) + + // Send CMD packet + return mc.writePacket(data) +} + +func (mc *mysqlConn) writeCommandPacketUint32(command byte, arg uint32) error { + // Reset Packet Sequence + mc.sequence = 0 + + data := mc.buf.takeSmallBuffer(4 + 1 + 4) + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // Add command byte + data[4] = command + + // Add arg [32 bit] + data[5] = byte(arg) + data[6] = byte(arg >> 8) + data[7] = byte(arg >> 16) + data[8] = byte(arg >> 24) + + // Send CMD packet + return mc.writePacket(data) +} + +/****************************************************************************** +* Result Packets * +******************************************************************************/ + +func (mc *mysqlConn) readAuthResult() ([]byte, string, error) { + data, err := mc.readPacket() + if err != nil { + return nil, "", err + } + + // packet indicator + switch data[0] { + + case iOK: + return nil, "", mc.handleOkPacket(data) + + case iAuthMoreData: + return data[1:], "", err + + case iEOF: + if len(data) == 1 { + // https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::OldAuthSwitchRequest + return nil, "mysql_old_password", nil + } + pluginEndIndex := bytes.IndexByte(data, 0x00) + if pluginEndIndex < 0 { + return nil, "", ErrMalformPkt + } + plugin := string(data[1:pluginEndIndex]) + authData := data[pluginEndIndex+1:] + return authData, plugin, nil + + default: // Error otherwise + return nil, "", mc.handleErrorPacket(data) + } +} + +// Returns error if Packet is not an 'Result OK'-Packet +func (mc *mysqlConn) readResultOK() error { + data, err := mc.readPacket() + if err != nil { + return err + } + + if data[0] == iOK { + return mc.handleOkPacket(data) + } + return mc.handleErrorPacket(data) +} + +// Result Set Header Packet +// http://dev.mysql.com/doc/internals/en/com-query-response.html#packet-ProtocolText::Resultset +func (mc *mysqlConn) readResultSetHeaderPacket() (int, error) { + data, err := mc.readPacket() + if err == nil { + switch data[0] { + + case iOK: + return 0, mc.handleOkPacket(data) + + case iERR: + return 0, mc.handleErrorPacket(data) + + case iLocalInFile: + return 0, mc.handleInFileRequest(string(data[1:])) + } + + // column count + num, _, n := readLengthEncodedInteger(data) + if n-len(data) == 0 { + return int(num), nil + } + + return 0, ErrMalformPkt + } + return 0, err +} + +// Error Packet +// http://dev.mysql.com/doc/internals/en/generic-response-packets.html#packet-ERR_Packet +func (mc *mysqlConn) handleErrorPacket(data []byte) error { + if data[0] != iERR { + return ErrMalformPkt + } + + // 0xff [1 byte] + + // Error Number [16 bit uint] + errno := binary.LittleEndian.Uint16(data[1:3]) + + // 1792: ER_CANT_EXECUTE_IN_READ_ONLY_TRANSACTION + // 1290: ER_OPTION_PREVENTS_STATEMENT (returned by Aurora during failover) + if (errno == 1792 || errno == 1290) && mc.cfg.RejectReadOnly { + // Oops; we are connected to a read-only connection, and won't be able + // to issue any write statements. Since RejectReadOnly is configured, + // we throw away this connection hoping this one would have write + // permission. This is specifically for a possible race condition + // during failover (e.g. on AWS Aurora). See README.md for more. + // + // We explicitly close the connection before returning + // driver.ErrBadConn to ensure that `database/sql` purges this + // connection and initiates a new one for next statement next time. + mc.Close() + return driver.ErrBadConn + } + + pos := 3 + + // SQL State [optional: # + 5bytes string] + if data[3] == 0x23 { + //sqlstate := string(data[4 : 4+5]) + pos = 9 + } + + // Error Message [string] + return &MySQLError{ + Number: errno, + Message: string(data[pos:]), + } +} + +func readStatus(b []byte) statusFlag { + return statusFlag(b[0]) | statusFlag(b[1])<<8 +} + +// Ok Packet +// http://dev.mysql.com/doc/internals/en/generic-response-packets.html#packet-OK_Packet +func (mc *mysqlConn) handleOkPacket(data []byte) error { + var n, m int + + // 0x00 [1 byte] + + // Affected rows [Length Coded Binary] + mc.affectedRows, _, n = readLengthEncodedInteger(data[1:]) + + // Insert id [Length Coded Binary] + mc.insertId, _, m = readLengthEncodedInteger(data[1+n:]) + + // server_status [2 bytes] + mc.status = readStatus(data[1+n+m : 1+n+m+2]) + if mc.status&statusMoreResultsExists != 0 { + return nil + } + + // warning count [2 bytes] + + return nil +} + +// Read Packets as Field Packets until EOF-Packet or an Error appears +// http://dev.mysql.com/doc/internals/en/com-query-response.html#packet-Protocol::ColumnDefinition41 +func (mc *mysqlConn) readColumns(count int) ([]mysqlField, error) { + columns := make([]mysqlField, count) + + for i := 0; ; i++ { + data, err := mc.readPacket() + if err != nil { + return nil, err + } + + // EOF Packet + if data[0] == iEOF && (len(data) == 5 || len(data) == 1) { + if i == count { + return columns, nil + } + return nil, fmt.Errorf("column count mismatch n:%d len:%d", count, len(columns)) + } + + // Catalog + pos, err := skipLengthEncodedString(data) + if err != nil { + return nil, err + } + + // Database [len coded string] + n, err := skipLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + pos += n + + // Table [len coded string] + if mc.cfg.ColumnsWithAlias { + tableName, _, n, err := readLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + pos += n + columns[i].tableName = string(tableName) + } else { + n, err = skipLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + pos += n + } + + // Original table [len coded string] + n, err = skipLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + pos += n + + // Name [len coded string] + name, _, n, err := readLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + columns[i].name = string(name) + pos += n + + // Original name [len coded string] + n, err = skipLengthEncodedString(data[pos:]) + if err != nil { + return nil, err + } + pos += n + + // Filler [uint8] + pos++ + + // Charset [charset, collation uint8] + columns[i].charSet = data[pos] + pos += 2 + + // Length [uint32] + columns[i].length = binary.LittleEndian.Uint32(data[pos : pos+4]) + pos += 4 + + // Field type [uint8] + columns[i].fieldType = fieldType(data[pos]) + pos++ + + // Flags [uint16] + columns[i].flags = fieldFlag(binary.LittleEndian.Uint16(data[pos : pos+2])) + pos += 2 + + // Decimals [uint8] + columns[i].decimals = data[pos] + //pos++ + + // Default value [len coded binary] + //if pos < len(data) { + // defaultVal, _, err = bytesToLengthCodedBinary(data[pos:]) + //} + } +} + +// Read Packets as Field Packets until EOF-Packet or an Error appears +// http://dev.mysql.com/doc/internals/en/com-query-response.html#packet-ProtocolText::ResultsetRow +func (rows *textRows) readRow(dest []driver.Value) error { + mc := rows.mc + + if rows.rs.done { + return io.EOF + } + + data, err := mc.readPacket() + if err != nil { + return err + } + + // EOF Packet + if data[0] == iEOF && len(data) == 5 { + // server_status [2 bytes] + rows.mc.status = readStatus(data[3:]) + rows.rs.done = true + if !rows.HasNextResultSet() { + rows.mc = nil + } + return io.EOF + } + if data[0] == iERR { + rows.mc = nil + return mc.handleErrorPacket(data) + } + + // RowSet Packet + var n int + var isNull bool + pos := 0 + + for i := range dest { + // Read bytes and convert to string + dest[i], isNull, n, err = readLengthEncodedString(data[pos:]) + pos += n + if err == nil { + if !isNull { + if !mc.parseTime { + continue + } else { + switch rows.rs.columns[i].fieldType { + case fieldTypeTimestamp, fieldTypeDateTime, + fieldTypeDate, fieldTypeNewDate: + dest[i], err = parseDateTime( + string(dest[i].([]byte)), + mc.cfg.Loc, + ) + if err == nil { + continue + } + default: + continue + } + } + + } else { + dest[i] = nil + continue + } + } + return err // err != nil + } + + return nil +} + +// Reads Packets until EOF-Packet or an Error appears. Returns count of Packets read +func (mc *mysqlConn) readUntilEOF() error { + for { + data, err := mc.readPacket() + if err != nil { + return err + } + + switch data[0] { + case iERR: + return mc.handleErrorPacket(data) + case iEOF: + if len(data) == 5 { + mc.status = readStatus(data[3:]) + } + return nil + } + } +} + +/****************************************************************************** +* Prepared Statements * +******************************************************************************/ + +// Prepare Result Packets +// http://dev.mysql.com/doc/internals/en/com-stmt-prepare-response.html +func (stmt *mysqlStmt) readPrepareResultPacket() (uint16, error) { + data, err := stmt.mc.readPacket() + if err == nil { + // packet indicator [1 byte] + if data[0] != iOK { + return 0, stmt.mc.handleErrorPacket(data) + } + + // statement id [4 bytes] + stmt.id = binary.LittleEndian.Uint32(data[1:5]) + + // Column count [16 bit uint] + columnCount := binary.LittleEndian.Uint16(data[5:7]) + + // Param count [16 bit uint] + stmt.paramCount = int(binary.LittleEndian.Uint16(data[7:9])) + + // Reserved [8 bit] + + // Warning count [16 bit uint] + + return columnCount, nil + } + return 0, err +} + +// http://dev.mysql.com/doc/internals/en/com-stmt-send-long-data.html +func (stmt *mysqlStmt) writeCommandLongData(paramID int, arg []byte) error { + maxLen := stmt.mc.maxAllowedPacket - 1 + pktLen := maxLen + + // After the header (bytes 0-3) follows before the data: + // 1 byte command + // 4 bytes stmtID + // 2 bytes paramID + const dataOffset = 1 + 4 + 2 + + // Cannot use the write buffer since + // a) the buffer is too small + // b) it is in use + data := make([]byte, 4+1+4+2+len(arg)) + + copy(data[4+dataOffset:], arg) + + for argLen := len(arg); argLen > 0; argLen -= pktLen - dataOffset { + if dataOffset+argLen < maxLen { + pktLen = dataOffset + argLen + } + + stmt.mc.sequence = 0 + // Add command byte [1 byte] + data[4] = comStmtSendLongData + + // Add stmtID [32 bit] + data[5] = byte(stmt.id) + data[6] = byte(stmt.id >> 8) + data[7] = byte(stmt.id >> 16) + data[8] = byte(stmt.id >> 24) + + // Add paramID [16 bit] + data[9] = byte(paramID) + data[10] = byte(paramID >> 8) + + // Send CMD packet + err := stmt.mc.writePacket(data[:4+pktLen]) + if err == nil { + data = data[pktLen-dataOffset:] + continue + } + return err + + } + + // Reset Packet Sequence + stmt.mc.sequence = 0 + return nil +} + +// Execute Prepared Statement +// http://dev.mysql.com/doc/internals/en/com-stmt-execute.html +func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error { + if len(args) != stmt.paramCount { + return fmt.Errorf( + "argument count mismatch (got: %d; has: %d)", + len(args), + stmt.paramCount, + ) + } + + const minPktLen = 4 + 1 + 4 + 1 + 4 + mc := stmt.mc + + // Determine threshould dynamically to avoid packet size shortage. + longDataSize := mc.maxAllowedPacket / (stmt.paramCount + 1) + if longDataSize < 64 { + longDataSize = 64 + } + + // Reset packet-sequence + mc.sequence = 0 + + var data []byte + + if len(args) == 0 { + data = mc.buf.takeBuffer(minPktLen) + } else { + data = mc.buf.takeCompleteBuffer() + } + if data == nil { + // cannot take the buffer. Something must be wrong with the connection + errLog.Print(ErrBusyBuffer) + return errBadConnNoWrite + } + + // command [1 byte] + data[4] = comStmtExecute + + // statement_id [4 bytes] + data[5] = byte(stmt.id) + data[6] = byte(stmt.id >> 8) + data[7] = byte(stmt.id >> 16) + data[8] = byte(stmt.id >> 24) + + // flags (0: CURSOR_TYPE_NO_CURSOR) [1 byte] + data[9] = 0x00 + + // iteration_count (uint32(1)) [4 bytes] + data[10] = 0x01 + data[11] = 0x00 + data[12] = 0x00 + data[13] = 0x00 + + if len(args) > 0 { + pos := minPktLen + + var nullMask []byte + if maskLen, typesLen := (len(args)+7)/8, 1+2*len(args); pos+maskLen+typesLen >= len(data) { + // buffer has to be extended but we don't know by how much so + // we depend on append after all data with known sizes fit. + // We stop at that because we deal with a lot of columns here + // which makes the required allocation size hard to guess. + tmp := make([]byte, pos+maskLen+typesLen) + copy(tmp[:pos], data[:pos]) + data = tmp + nullMask = data[pos : pos+maskLen] + pos += maskLen + } else { + nullMask = data[pos : pos+maskLen] + for i := 0; i < maskLen; i++ { + nullMask[i] = 0 + } + pos += maskLen + } + + // newParameterBoundFlag 1 [1 byte] + data[pos] = 0x01 + pos++ + + // type of each parameter [len(args)*2 bytes] + paramTypes := data[pos:] + pos += len(args) * 2 + + // value of each parameter [n bytes] + paramValues := data[pos:pos] + valuesCap := cap(paramValues) + + for i, arg := range args { + // build NULL-bitmap + if arg == nil { + nullMask[i/8] |= 1 << (uint(i) & 7) + paramTypes[i+i] = byte(fieldTypeNULL) + paramTypes[i+i+1] = 0x00 + continue + } + + // cache types and values + switch v := arg.(type) { + case int64: + paramTypes[i+i] = byte(fieldTypeLongLong) + paramTypes[i+i+1] = 0x00 + + if cap(paramValues)-len(paramValues)-8 >= 0 { + paramValues = paramValues[:len(paramValues)+8] + binary.LittleEndian.PutUint64( + paramValues[len(paramValues)-8:], + uint64(v), + ) + } else { + paramValues = append(paramValues, + uint64ToBytes(uint64(v))..., + ) + } + + case float64: + paramTypes[i+i] = byte(fieldTypeDouble) + paramTypes[i+i+1] = 0x00 + + if cap(paramValues)-len(paramValues)-8 >= 0 { + paramValues = paramValues[:len(paramValues)+8] + binary.LittleEndian.PutUint64( + paramValues[len(paramValues)-8:], + math.Float64bits(v), + ) + } else { + paramValues = append(paramValues, + uint64ToBytes(math.Float64bits(v))..., + ) + } + + case bool: + paramTypes[i+i] = byte(fieldTypeTiny) + paramTypes[i+i+1] = 0x00 + + if v { + paramValues = append(paramValues, 0x01) + } else { + paramValues = append(paramValues, 0x00) + } + + case []byte: + // Common case (non-nil value) first + if v != nil { + paramTypes[i+i] = byte(fieldTypeString) + paramTypes[i+i+1] = 0x00 + + if len(v) < longDataSize { + paramValues = appendLengthEncodedInteger(paramValues, + uint64(len(v)), + ) + paramValues = append(paramValues, v...) + } else { + if err := stmt.writeCommandLongData(i, v); err != nil { + return err + } + } + continue + } + + // Handle []byte(nil) as a NULL value + nullMask[i/8] |= 1 << (uint(i) & 7) + paramTypes[i+i] = byte(fieldTypeNULL) + paramTypes[i+i+1] = 0x00 + + case string: + paramTypes[i+i] = byte(fieldTypeString) + paramTypes[i+i+1] = 0x00 + + if len(v) < longDataSize { + paramValues = appendLengthEncodedInteger(paramValues, + uint64(len(v)), + ) + paramValues = append(paramValues, v...) + } else { + if err := stmt.writeCommandLongData(i, []byte(v)); err != nil { + return err + } + } + + case time.Time: + paramTypes[i+i] = byte(fieldTypeString) + paramTypes[i+i+1] = 0x00 + + var a [64]byte + var b = a[:0] + + if v.IsZero() { + b = append(b, "0000-00-00"...) + } else { + b = v.In(mc.cfg.Loc).AppendFormat(b, timeFormat) + } + + paramValues = appendLengthEncodedInteger(paramValues, + uint64(len(b)), + ) + paramValues = append(paramValues, b...) + + default: + return fmt.Errorf("cannot convert type: %T", arg) + } + } + + // Check if param values exceeded the available buffer + // In that case we must build the data packet with the new values buffer + if valuesCap != cap(paramValues) { + data = append(data[:pos], paramValues...) + mc.buf.buf = data + } + + pos += len(paramValues) + data = data[:pos] + } + + return mc.writePacket(data) +} + +func (mc *mysqlConn) discardResults() error { + for mc.status&statusMoreResultsExists != 0 { + resLen, err := mc.readResultSetHeaderPacket() + if err != nil { + return err + } + if resLen > 0 { + // columns + if err := mc.readUntilEOF(); err != nil { + return err + } + // rows + if err := mc.readUntilEOF(); err != nil { + return err + } + } + } + return nil +} + +// http://dev.mysql.com/doc/internals/en/binary-protocol-resultset-row.html +func (rows *binaryRows) readRow(dest []driver.Value) error { + data, err := rows.mc.readPacket() + if err != nil { + return err + } + + // packet indicator [1 byte] + if data[0] != iOK { + // EOF Packet + if data[0] == iEOF && len(data) == 5 { + rows.mc.status = readStatus(data[3:]) + rows.rs.done = true + if !rows.HasNextResultSet() { + rows.mc = nil + } + return io.EOF + } + mc := rows.mc + rows.mc = nil + + // Error otherwise + return mc.handleErrorPacket(data) + } + + // NULL-bitmap, [(column-count + 7 + 2) / 8 bytes] + pos := 1 + (len(dest)+7+2)>>3 + nullMask := data[1:pos] + + for i := range dest { + // Field is NULL + // (byte >> bit-pos) % 2 == 1 + if ((nullMask[(i+2)>>3] >> uint((i+2)&7)) & 1) == 1 { + dest[i] = nil + continue + } + + // Convert to byte-coded string + switch rows.rs.columns[i].fieldType { + case fieldTypeNULL: + dest[i] = nil + continue + + // Numeric Types + case fieldTypeTiny: + if rows.rs.columns[i].flags&flagUnsigned != 0 { + dest[i] = int64(data[pos]) + } else { + dest[i] = int64(int8(data[pos])) + } + pos++ + continue + + case fieldTypeShort, fieldTypeYear: + if rows.rs.columns[i].flags&flagUnsigned != 0 { + dest[i] = int64(binary.LittleEndian.Uint16(data[pos : pos+2])) + } else { + dest[i] = int64(int16(binary.LittleEndian.Uint16(data[pos : pos+2]))) + } + pos += 2 + continue + + case fieldTypeInt24, fieldTypeLong: + if rows.rs.columns[i].flags&flagUnsigned != 0 { + dest[i] = int64(binary.LittleEndian.Uint32(data[pos : pos+4])) + } else { + dest[i] = int64(int32(binary.LittleEndian.Uint32(data[pos : pos+4]))) + } + pos += 4 + continue + + case fieldTypeLongLong: + if rows.rs.columns[i].flags&flagUnsigned != 0 { + val := binary.LittleEndian.Uint64(data[pos : pos+8]) + if val > math.MaxInt64 { + dest[i] = uint64ToString(val) + } else { + dest[i] = int64(val) + } + } else { + dest[i] = int64(binary.LittleEndian.Uint64(data[pos : pos+8])) + } + pos += 8 + continue + + case fieldTypeFloat: + dest[i] = math.Float32frombits(binary.LittleEndian.Uint32(data[pos : pos+4])) + pos += 4 + continue + + case fieldTypeDouble: + dest[i] = math.Float64frombits(binary.LittleEndian.Uint64(data[pos : pos+8])) + pos += 8 + continue + + // Length coded Binary Strings + case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar, + fieldTypeBit, fieldTypeEnum, fieldTypeSet, fieldTypeTinyBLOB, + fieldTypeMediumBLOB, fieldTypeLongBLOB, fieldTypeBLOB, + fieldTypeVarString, fieldTypeString, fieldTypeGeometry, fieldTypeJSON: + var isNull bool + var n int + dest[i], isNull, n, err = readLengthEncodedString(data[pos:]) + pos += n + if err == nil { + if !isNull { + continue + } else { + dest[i] = nil + continue + } + } + return err + + case + fieldTypeDate, fieldTypeNewDate, // Date YYYY-MM-DD + fieldTypeTime, // Time [-][H]HH:MM:SS[.fractal] + fieldTypeTimestamp, fieldTypeDateTime: // Timestamp YYYY-MM-DD HH:MM:SS[.fractal] + + num, isNull, n := readLengthEncodedInteger(data[pos:]) + pos += n + + switch { + case isNull: + dest[i] = nil + continue + case rows.rs.columns[i].fieldType == fieldTypeTime: + // database/sql does not support an equivalent to TIME, return a string + var dstlen uint8 + switch decimals := rows.rs.columns[i].decimals; decimals { + case 0x00, 0x1f: + dstlen = 8 + case 1, 2, 3, 4, 5, 6: + dstlen = 8 + 1 + decimals + default: + return fmt.Errorf( + "protocol error, illegal decimals value %d", + rows.rs.columns[i].decimals, + ) + } + dest[i], err = formatBinaryTime(data[pos:pos+int(num)], dstlen) + case rows.mc.parseTime: + dest[i], err = parseBinaryDateTime(num, data[pos:], rows.mc.cfg.Loc) + default: + var dstlen uint8 + if rows.rs.columns[i].fieldType == fieldTypeDate { + dstlen = 10 + } else { + switch decimals := rows.rs.columns[i].decimals; decimals { + case 0x00, 0x1f: + dstlen = 19 + case 1, 2, 3, 4, 5, 6: + dstlen = 19 + 1 + decimals + default: + return fmt.Errorf( + "protocol error, illegal decimals value %d", + rows.rs.columns[i].decimals, + ) + } + } + dest[i], err = formatBinaryDateTime(data[pos:pos+int(num)], dstlen) + } + + if err == nil { + pos += int(num) + continue + } else { + return err + } + + // Please report if this happens! + default: + return fmt.Errorf("unknown field type %d", rows.rs.columns[i].fieldType) + } + } + + return nil +} diff --git a/vendor/github.com/go-sql-driver/mysql/result.go b/vendor/github.com/go-sql-driver/mysql/result.go new file mode 100644 index 0000000000..c6438d0347 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/result.go @@ -0,0 +1,22 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +type mysqlResult struct { + affectedRows int64 + insertId int64 +} + +func (res *mysqlResult) LastInsertId() (int64, error) { + return res.insertId, nil +} + +func (res *mysqlResult) RowsAffected() (int64, error) { + return res.affectedRows, nil +} diff --git a/vendor/github.com/go-sql-driver/mysql/rows.go b/vendor/github.com/go-sql-driver/mysql/rows.go new file mode 100644 index 0000000000..d3b1e28221 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/rows.go @@ -0,0 +1,216 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "database/sql/driver" + "io" + "math" + "reflect" +) + +type resultSet struct { + columns []mysqlField + columnNames []string + done bool +} + +type mysqlRows struct { + mc *mysqlConn + rs resultSet + finish func() +} + +type binaryRows struct { + mysqlRows +} + +type textRows struct { + mysqlRows +} + +func (rows *mysqlRows) Columns() []string { + if rows.rs.columnNames != nil { + return rows.rs.columnNames + } + + columns := make([]string, len(rows.rs.columns)) + if rows.mc != nil && rows.mc.cfg.ColumnsWithAlias { + for i := range columns { + if tableName := rows.rs.columns[i].tableName; len(tableName) > 0 { + columns[i] = tableName + "." + rows.rs.columns[i].name + } else { + columns[i] = rows.rs.columns[i].name + } + } + } else { + for i := range columns { + columns[i] = rows.rs.columns[i].name + } + } + + rows.rs.columnNames = columns + return columns +} + +func (rows *mysqlRows) ColumnTypeDatabaseTypeName(i int) string { + return rows.rs.columns[i].typeDatabaseName() +} + +// func (rows *mysqlRows) ColumnTypeLength(i int) (length int64, ok bool) { +// return int64(rows.rs.columns[i].length), true +// } + +func (rows *mysqlRows) ColumnTypeNullable(i int) (nullable, ok bool) { + return rows.rs.columns[i].flags&flagNotNULL == 0, true +} + +func (rows *mysqlRows) ColumnTypePrecisionScale(i int) (int64, int64, bool) { + column := rows.rs.columns[i] + decimals := int64(column.decimals) + + switch column.fieldType { + case fieldTypeDecimal, fieldTypeNewDecimal: + if decimals > 0 { + return int64(column.length) - 2, decimals, true + } + return int64(column.length) - 1, decimals, true + case fieldTypeTimestamp, fieldTypeDateTime, fieldTypeTime: + return decimals, decimals, true + case fieldTypeFloat, fieldTypeDouble: + if decimals == 0x1f { + return math.MaxInt64, math.MaxInt64, true + } + return math.MaxInt64, decimals, true + } + + return 0, 0, false +} + +func (rows *mysqlRows) ColumnTypeScanType(i int) reflect.Type { + return rows.rs.columns[i].scanType() +} + +func (rows *mysqlRows) Close() (err error) { + if f := rows.finish; f != nil { + f() + rows.finish = nil + } + + mc := rows.mc + if mc == nil { + return nil + } + if err := mc.error(); err != nil { + return err + } + + // Remove unread packets from stream + if !rows.rs.done { + err = mc.readUntilEOF() + } + if err == nil { + if err = mc.discardResults(); err != nil { + return err + } + } + + rows.mc = nil + return err +} + +func (rows *mysqlRows) HasNextResultSet() (b bool) { + if rows.mc == nil { + return false + } + return rows.mc.status&statusMoreResultsExists != 0 +} + +func (rows *mysqlRows) nextResultSet() (int, error) { + if rows.mc == nil { + return 0, io.EOF + } + if err := rows.mc.error(); err != nil { + return 0, err + } + + // Remove unread packets from stream + if !rows.rs.done { + if err := rows.mc.readUntilEOF(); err != nil { + return 0, err + } + rows.rs.done = true + } + + if !rows.HasNextResultSet() { + rows.mc = nil + return 0, io.EOF + } + rows.rs = resultSet{} + return rows.mc.readResultSetHeaderPacket() +} + +func (rows *mysqlRows) nextNotEmptyResultSet() (int, error) { + for { + resLen, err := rows.nextResultSet() + if err != nil { + return 0, err + } + + if resLen > 0 { + return resLen, nil + } + + rows.rs.done = true + } +} + +func (rows *binaryRows) NextResultSet() error { + resLen, err := rows.nextNotEmptyResultSet() + if err != nil { + return err + } + + rows.rs.columns, err = rows.mc.readColumns(resLen) + return err +} + +func (rows *binaryRows) Next(dest []driver.Value) error { + if mc := rows.mc; mc != nil { + if err := mc.error(); err != nil { + return err + } + + // Fetch next row from stream + return rows.readRow(dest) + } + return io.EOF +} + +func (rows *textRows) NextResultSet() (err error) { + resLen, err := rows.nextNotEmptyResultSet() + if err != nil { + return err + } + + rows.rs.columns, err = rows.mc.readColumns(resLen) + return err +} + +func (rows *textRows) Next(dest []driver.Value) error { + if mc := rows.mc; mc != nil { + if err := mc.error(); err != nil { + return err + } + + // Fetch next row from stream + return rows.readRow(dest) + } + return io.EOF +} diff --git a/vendor/github.com/go-sql-driver/mysql/statement.go b/vendor/github.com/go-sql-driver/mysql/statement.go new file mode 100644 index 0000000000..ce7fe4cd04 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/statement.go @@ -0,0 +1,211 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "database/sql/driver" + "fmt" + "io" + "reflect" + "strconv" +) + +type mysqlStmt struct { + mc *mysqlConn + id uint32 + paramCount int +} + +func (stmt *mysqlStmt) Close() error { + if stmt.mc == nil || stmt.mc.closed.IsSet() { + // driver.Stmt.Close can be called more than once, thus this function + // has to be idempotent. + // See also Issue #450 and golang/go#16019. + //errLog.Print(ErrInvalidConn) + return driver.ErrBadConn + } + + err := stmt.mc.writeCommandPacketUint32(comStmtClose, stmt.id) + stmt.mc = nil + return err +} + +func (stmt *mysqlStmt) NumInput() int { + return stmt.paramCount +} + +func (stmt *mysqlStmt) ColumnConverter(idx int) driver.ValueConverter { + return converter{} +} + +func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) { + if stmt.mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + // Send command + err := stmt.writeExecutePacket(args) + if err != nil { + return nil, stmt.mc.markBadConn(err) + } + + mc := stmt.mc + + mc.affectedRows = 0 + mc.insertId = 0 + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err != nil { + return nil, err + } + + if resLen > 0 { + // Columns + if err = mc.readUntilEOF(); err != nil { + return nil, err + } + + // Rows + if err := mc.readUntilEOF(); err != nil { + return nil, err + } + } + + if err := mc.discardResults(); err != nil { + return nil, err + } + + return &mysqlResult{ + affectedRows: int64(mc.affectedRows), + insertId: int64(mc.insertId), + }, nil +} + +func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) { + return stmt.query(args) +} + +func (stmt *mysqlStmt) query(args []driver.Value) (*binaryRows, error) { + if stmt.mc.closed.IsSet() { + errLog.Print(ErrInvalidConn) + return nil, driver.ErrBadConn + } + // Send command + err := stmt.writeExecutePacket(args) + if err != nil { + return nil, stmt.mc.markBadConn(err) + } + + mc := stmt.mc + + // Read Result + resLen, err := mc.readResultSetHeaderPacket() + if err != nil { + return nil, err + } + + rows := new(binaryRows) + + if resLen > 0 { + rows.mc = mc + rows.rs.columns, err = mc.readColumns(resLen) + } else { + rows.rs.done = true + + switch err := rows.NextResultSet(); err { + case nil, io.EOF: + return rows, nil + default: + return nil, err + } + } + + return rows, err +} + +type converter struct{} + +// ConvertValue mirrors the reference/default converter in database/sql/driver +// with _one_ exception. We support uint64 with their high bit and the default +// implementation does not. This function should be kept in sync with +// database/sql/driver defaultConverter.ConvertValue() except for that +// deliberate difference. +func (c converter) ConvertValue(v interface{}) (driver.Value, error) { + if driver.IsValue(v) { + return v, nil + } + + if vr, ok := v.(driver.Valuer); ok { + sv, err := callValuerValue(vr) + if err != nil { + return nil, err + } + if !driver.IsValue(sv) { + return nil, fmt.Errorf("non-Value type %T returned from Value", sv) + } + return sv, nil + } + + rv := reflect.ValueOf(v) + switch rv.Kind() { + case reflect.Ptr: + // indirect pointers + if rv.IsNil() { + return nil, nil + } else { + return c.ConvertValue(rv.Elem().Interface()) + } + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return rv.Int(), nil + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32: + return int64(rv.Uint()), nil + case reflect.Uint64: + u64 := rv.Uint() + if u64 >= 1<<63 { + return strconv.FormatUint(u64, 10), nil + } + return int64(u64), nil + case reflect.Float32, reflect.Float64: + return rv.Float(), nil + case reflect.Bool: + return rv.Bool(), nil + case reflect.Slice: + ek := rv.Type().Elem().Kind() + if ek == reflect.Uint8 { + return rv.Bytes(), nil + } + return nil, fmt.Errorf("unsupported type %T, a slice of %s", v, ek) + case reflect.String: + return rv.String(), nil + } + return nil, fmt.Errorf("unsupported type %T, a %s", v, rv.Kind()) +} + +var valuerReflectType = reflect.TypeOf((*driver.Valuer)(nil)).Elem() + +// callValuerValue returns vr.Value(), with one exception: +// If vr.Value is an auto-generated method on a pointer type and the +// pointer is nil, it would panic at runtime in the panicwrap +// method. Treat it like nil instead. +// +// This is so people can implement driver.Value on value types and +// still use nil pointers to those types to mean nil/NULL, just like +// string/*string. +// +// This is an exact copy of the same-named unexported function from the +// database/sql package. +func callValuerValue(vr driver.Valuer) (v driver.Value, err error) { + if rv := reflect.ValueOf(vr); rv.Kind() == reflect.Ptr && + rv.IsNil() && + rv.Type().Elem().Implements(valuerReflectType) { + return nil, nil + } + return vr.Value() +} diff --git a/vendor/github.com/go-sql-driver/mysql/transaction.go b/vendor/github.com/go-sql-driver/mysql/transaction.go new file mode 100644 index 0000000000..417d72793b --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/transaction.go @@ -0,0 +1,31 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +type mysqlTx struct { + mc *mysqlConn +} + +func (tx *mysqlTx) Commit() (err error) { + if tx.mc == nil || tx.mc.closed.IsSet() { + return ErrInvalidConn + } + err = tx.mc.exec("COMMIT") + tx.mc = nil + return +} + +func (tx *mysqlTx) Rollback() (err error) { + if tx.mc == nil || tx.mc.closed.IsSet() { + return ErrInvalidConn + } + err = tx.mc.exec("ROLLBACK") + tx.mc = nil + return +} diff --git a/vendor/github.com/go-sql-driver/mysql/utils.go b/vendor/github.com/go-sql-driver/mysql/utils.go new file mode 100644 index 0000000000..ca5d47d825 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/utils.go @@ -0,0 +1,726 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +package mysql + +import ( + "crypto/tls" + "database/sql/driver" + "encoding/binary" + "fmt" + "io" + "strconv" + "strings" + "sync" + "sync/atomic" + "time" +) + +// Registry for custom tls.Configs +var ( + tlsConfigLock sync.RWMutex + tlsConfigRegistry map[string]*tls.Config +) + +// RegisterTLSConfig registers a custom tls.Config to be used with sql.Open. +// Use the key as a value in the DSN where tls=value. +// +// Note: The provided tls.Config is exclusively owned by the driver after +// registering it. +// +// rootCertPool := x509.NewCertPool() +// pem, err := ioutil.ReadFile("/path/ca-cert.pem") +// if err != nil { +// log.Fatal(err) +// } +// if ok := rootCertPool.AppendCertsFromPEM(pem); !ok { +// log.Fatal("Failed to append PEM.") +// } +// clientCert := make([]tls.Certificate, 0, 1) +// certs, err := tls.LoadX509KeyPair("/path/client-cert.pem", "/path/client-key.pem") +// if err != nil { +// log.Fatal(err) +// } +// clientCert = append(clientCert, certs) +// mysql.RegisterTLSConfig("custom", &tls.Config{ +// RootCAs: rootCertPool, +// Certificates: clientCert, +// }) +// db, err := sql.Open("mysql", "user@tcp(localhost:3306)/test?tls=custom") +// +func RegisterTLSConfig(key string, config *tls.Config) error { + if _, isBool := readBool(key); isBool || strings.ToLower(key) == "skip-verify" { + return fmt.Errorf("key '%s' is reserved", key) + } + + tlsConfigLock.Lock() + if tlsConfigRegistry == nil { + tlsConfigRegistry = make(map[string]*tls.Config) + } + + tlsConfigRegistry[key] = config + tlsConfigLock.Unlock() + return nil +} + +// DeregisterTLSConfig removes the tls.Config associated with key. +func DeregisterTLSConfig(key string) { + tlsConfigLock.Lock() + if tlsConfigRegistry != nil { + delete(tlsConfigRegistry, key) + } + tlsConfigLock.Unlock() +} + +func getTLSConfigClone(key string) (config *tls.Config) { + tlsConfigLock.RLock() + if v, ok := tlsConfigRegistry[key]; ok { + config = cloneTLSConfig(v) + } + tlsConfigLock.RUnlock() + return +} + +// Returns the bool value of the input. +// The 2nd return value indicates if the input was a valid bool value +func readBool(input string) (value bool, valid bool) { + switch input { + case "1", "true", "TRUE", "True": + return true, true + case "0", "false", "FALSE", "False": + return false, true + } + + // Not a valid bool value + return +} + +/****************************************************************************** +* Time related utils * +******************************************************************************/ + +// NullTime represents a time.Time that may be NULL. +// NullTime implements the Scanner interface so +// it can be used as a scan destination: +// +// var nt NullTime +// err := db.QueryRow("SELECT time FROM foo WHERE id=?", id).Scan(&nt) +// ... +// if nt.Valid { +// // use nt.Time +// } else { +// // NULL value +// } +// +// This NullTime implementation is not driver-specific +type NullTime struct { + Time time.Time + Valid bool // Valid is true if Time is not NULL +} + +// Scan implements the Scanner interface. +// The value type must be time.Time or string / []byte (formatted time-string), +// otherwise Scan fails. +func (nt *NullTime) Scan(value interface{}) (err error) { + if value == nil { + nt.Time, nt.Valid = time.Time{}, false + return + } + + switch v := value.(type) { + case time.Time: + nt.Time, nt.Valid = v, true + return + case []byte: + nt.Time, err = parseDateTime(string(v), time.UTC) + nt.Valid = (err == nil) + return + case string: + nt.Time, err = parseDateTime(v, time.UTC) + nt.Valid = (err == nil) + return + } + + nt.Valid = false + return fmt.Errorf("Can't convert %T to time.Time", value) +} + +// Value implements the driver Valuer interface. +func (nt NullTime) Value() (driver.Value, error) { + if !nt.Valid { + return nil, nil + } + return nt.Time, nil +} + +func parseDateTime(str string, loc *time.Location) (t time.Time, err error) { + base := "0000-00-00 00:00:00.0000000" + switch len(str) { + case 10, 19, 21, 22, 23, 24, 25, 26: // up to "YYYY-MM-DD HH:MM:SS.MMMMMM" + if str == base[:len(str)] { + return + } + t, err = time.Parse(timeFormat[:len(str)], str) + default: + err = fmt.Errorf("invalid time string: %s", str) + return + } + + // Adjust location + if err == nil && loc != time.UTC { + y, mo, d := t.Date() + h, mi, s := t.Clock() + t, err = time.Date(y, mo, d, h, mi, s, t.Nanosecond(), loc), nil + } + + return +} + +func parseBinaryDateTime(num uint64, data []byte, loc *time.Location) (driver.Value, error) { + switch num { + case 0: + return time.Time{}, nil + case 4: + return time.Date( + int(binary.LittleEndian.Uint16(data[:2])), // year + time.Month(data[2]), // month + int(data[3]), // day + 0, 0, 0, 0, + loc, + ), nil + case 7: + return time.Date( + int(binary.LittleEndian.Uint16(data[:2])), // year + time.Month(data[2]), // month + int(data[3]), // day + int(data[4]), // hour + int(data[5]), // minutes + int(data[6]), // seconds + 0, + loc, + ), nil + case 11: + return time.Date( + int(binary.LittleEndian.Uint16(data[:2])), // year + time.Month(data[2]), // month + int(data[3]), // day + int(data[4]), // hour + int(data[5]), // minutes + int(data[6]), // seconds + int(binary.LittleEndian.Uint32(data[7:11]))*1000, // nanoseconds + loc, + ), nil + } + return nil, fmt.Errorf("invalid DATETIME packet length %d", num) +} + +// zeroDateTime is used in formatBinaryDateTime to avoid an allocation +// if the DATE or DATETIME has the zero value. +// It must never be changed. +// The current behavior depends on database/sql copying the result. +var zeroDateTime = []byte("0000-00-00 00:00:00.000000") + +const digits01 = "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" +const digits10 = "0000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999" + +func appendMicrosecs(dst, src []byte, decimals int) []byte { + if decimals <= 0 { + return dst + } + if len(src) == 0 { + return append(dst, ".000000"[:decimals+1]...) + } + + microsecs := binary.LittleEndian.Uint32(src[:4]) + p1 := byte(microsecs / 10000) + microsecs -= 10000 * uint32(p1) + p2 := byte(microsecs / 100) + microsecs -= 100 * uint32(p2) + p3 := byte(microsecs) + + switch decimals { + default: + return append(dst, '.', + digits10[p1], digits01[p1], + digits10[p2], digits01[p2], + digits10[p3], digits01[p3], + ) + case 1: + return append(dst, '.', + digits10[p1], + ) + case 2: + return append(dst, '.', + digits10[p1], digits01[p1], + ) + case 3: + return append(dst, '.', + digits10[p1], digits01[p1], + digits10[p2], + ) + case 4: + return append(dst, '.', + digits10[p1], digits01[p1], + digits10[p2], digits01[p2], + ) + case 5: + return append(dst, '.', + digits10[p1], digits01[p1], + digits10[p2], digits01[p2], + digits10[p3], + ) + } +} + +func formatBinaryDateTime(src []byte, length uint8) (driver.Value, error) { + // length expects the deterministic length of the zero value, + // negative time and 100+ hours are automatically added if needed + if len(src) == 0 { + return zeroDateTime[:length], nil + } + var dst []byte // return value + var p1, p2, p3 byte // current digit pair + + switch length { + case 10, 19, 21, 22, 23, 24, 25, 26: + default: + t := "DATE" + if length > 10 { + t += "TIME" + } + return nil, fmt.Errorf("illegal %s length %d", t, length) + } + switch len(src) { + case 4, 7, 11: + default: + t := "DATE" + if length > 10 { + t += "TIME" + } + return nil, fmt.Errorf("illegal %s packet length %d", t, len(src)) + } + dst = make([]byte, 0, length) + // start with the date + year := binary.LittleEndian.Uint16(src[:2]) + pt := year / 100 + p1 = byte(year - 100*uint16(pt)) + p2, p3 = src[2], src[3] + dst = append(dst, + digits10[pt], digits01[pt], + digits10[p1], digits01[p1], '-', + digits10[p2], digits01[p2], '-', + digits10[p3], digits01[p3], + ) + if length == 10 { + return dst, nil + } + if len(src) == 4 { + return append(dst, zeroDateTime[10:length]...), nil + } + dst = append(dst, ' ') + p1 = src[4] // hour + src = src[5:] + + // p1 is 2-digit hour, src is after hour + p2, p3 = src[0], src[1] + dst = append(dst, + digits10[p1], digits01[p1], ':', + digits10[p2], digits01[p2], ':', + digits10[p3], digits01[p3], + ) + return appendMicrosecs(dst, src[2:], int(length)-20), nil +} + +func formatBinaryTime(src []byte, length uint8) (driver.Value, error) { + // length expects the deterministic length of the zero value, + // negative time and 100+ hours are automatically added if needed + if len(src) == 0 { + return zeroDateTime[11 : 11+length], nil + } + var dst []byte // return value + + switch length { + case + 8, // time (can be up to 10 when negative and 100+ hours) + 10, 11, 12, 13, 14, 15: // time with fractional seconds + default: + return nil, fmt.Errorf("illegal TIME length %d", length) + } + switch len(src) { + case 8, 12: + default: + return nil, fmt.Errorf("invalid TIME packet length %d", len(src)) + } + // +2 to enable negative time and 100+ hours + dst = make([]byte, 0, length+2) + if src[0] == 1 { + dst = append(dst, '-') + } + days := binary.LittleEndian.Uint32(src[1:5]) + hours := int64(days)*24 + int64(src[5]) + + if hours >= 100 { + dst = strconv.AppendInt(dst, hours, 10) + } else { + dst = append(dst, digits10[hours], digits01[hours]) + } + + min, sec := src[6], src[7] + dst = append(dst, ':', + digits10[min], digits01[min], ':', + digits10[sec], digits01[sec], + ) + return appendMicrosecs(dst, src[8:], int(length)-9), nil +} + +/****************************************************************************** +* Convert from and to bytes * +******************************************************************************/ + +func uint64ToBytes(n uint64) []byte { + return []byte{ + byte(n), + byte(n >> 8), + byte(n >> 16), + byte(n >> 24), + byte(n >> 32), + byte(n >> 40), + byte(n >> 48), + byte(n >> 56), + } +} + +func uint64ToString(n uint64) []byte { + var a [20]byte + i := 20 + + // U+0030 = 0 + // ... + // U+0039 = 9 + + var q uint64 + for n >= 10 { + i-- + q = n / 10 + a[i] = uint8(n-q*10) + 0x30 + n = q + } + + i-- + a[i] = uint8(n) + 0x30 + + return a[i:] +} + +// treats string value as unsigned integer representation +func stringToInt(b []byte) int { + val := 0 + for i := range b { + val *= 10 + val += int(b[i] - 0x30) + } + return val +} + +// returns the string read as a bytes slice, wheter the value is NULL, +// the number of bytes read and an error, in case the string is longer than +// the input slice +func readLengthEncodedString(b []byte) ([]byte, bool, int, error) { + // Get length + num, isNull, n := readLengthEncodedInteger(b) + if num < 1 { + return b[n:n], isNull, n, nil + } + + n += int(num) + + // Check data length + if len(b) >= n { + return b[n-int(num) : n : n], false, n, nil + } + return nil, false, n, io.EOF +} + +// returns the number of bytes skipped and an error, in case the string is +// longer than the input slice +func skipLengthEncodedString(b []byte) (int, error) { + // Get length + num, _, n := readLengthEncodedInteger(b) + if num < 1 { + return n, nil + } + + n += int(num) + + // Check data length + if len(b) >= n { + return n, nil + } + return n, io.EOF +} + +// returns the number read, whether the value is NULL and the number of bytes read +func readLengthEncodedInteger(b []byte) (uint64, bool, int) { + // See issue #349 + if len(b) == 0 { + return 0, true, 1 + } + + switch b[0] { + // 251: NULL + case 0xfb: + return 0, true, 1 + + // 252: value of following 2 + case 0xfc: + return uint64(b[1]) | uint64(b[2])<<8, false, 3 + + // 253: value of following 3 + case 0xfd: + return uint64(b[1]) | uint64(b[2])<<8 | uint64(b[3])<<16, false, 4 + + // 254: value of following 8 + case 0xfe: + return uint64(b[1]) | uint64(b[2])<<8 | uint64(b[3])<<16 | + uint64(b[4])<<24 | uint64(b[5])<<32 | uint64(b[6])<<40 | + uint64(b[7])<<48 | uint64(b[8])<<56, + false, 9 + } + + // 0-250: value of first byte + return uint64(b[0]), false, 1 +} + +// encodes a uint64 value and appends it to the given bytes slice +func appendLengthEncodedInteger(b []byte, n uint64) []byte { + switch { + case n <= 250: + return append(b, byte(n)) + + case n <= 0xffff: + return append(b, 0xfc, byte(n), byte(n>>8)) + + case n <= 0xffffff: + return append(b, 0xfd, byte(n), byte(n>>8), byte(n>>16)) + } + return append(b, 0xfe, byte(n), byte(n>>8), byte(n>>16), byte(n>>24), + byte(n>>32), byte(n>>40), byte(n>>48), byte(n>>56)) +} + +// reserveBuffer checks cap(buf) and expand buffer to len(buf) + appendSize. +// If cap(buf) is not enough, reallocate new buffer. +func reserveBuffer(buf []byte, appendSize int) []byte { + newSize := len(buf) + appendSize + if cap(buf) < newSize { + // Grow buffer exponentially + newBuf := make([]byte, len(buf)*2+appendSize) + copy(newBuf, buf) + buf = newBuf + } + return buf[:newSize] +} + +// escapeBytesBackslash escapes []byte with backslashes (\) +// This escapes the contents of a string (provided as []byte) by adding backslashes before special +// characters, and turning others into specific escape sequences, such as +// turning newlines into \n and null bytes into \0. +// https://github.com/mysql/mysql-server/blob/mysql-5.7.5/mysys/charset.c#L823-L932 +func escapeBytesBackslash(buf, v []byte) []byte { + pos := len(buf) + buf = reserveBuffer(buf, len(v)*2) + + for _, c := range v { + switch c { + case '\x00': + buf[pos] = '\\' + buf[pos+1] = '0' + pos += 2 + case '\n': + buf[pos] = '\\' + buf[pos+1] = 'n' + pos += 2 + case '\r': + buf[pos] = '\\' + buf[pos+1] = 'r' + pos += 2 + case '\x1a': + buf[pos] = '\\' + buf[pos+1] = 'Z' + pos += 2 + case '\'': + buf[pos] = '\\' + buf[pos+1] = '\'' + pos += 2 + case '"': + buf[pos] = '\\' + buf[pos+1] = '"' + pos += 2 + case '\\': + buf[pos] = '\\' + buf[pos+1] = '\\' + pos += 2 + default: + buf[pos] = c + pos++ + } + } + + return buf[:pos] +} + +// escapeStringBackslash is similar to escapeBytesBackslash but for string. +func escapeStringBackslash(buf []byte, v string) []byte { + pos := len(buf) + buf = reserveBuffer(buf, len(v)*2) + + for i := 0; i < len(v); i++ { + c := v[i] + switch c { + case '\x00': + buf[pos] = '\\' + buf[pos+1] = '0' + pos += 2 + case '\n': + buf[pos] = '\\' + buf[pos+1] = 'n' + pos += 2 + case '\r': + buf[pos] = '\\' + buf[pos+1] = 'r' + pos += 2 + case '\x1a': + buf[pos] = '\\' + buf[pos+1] = 'Z' + pos += 2 + case '\'': + buf[pos] = '\\' + buf[pos+1] = '\'' + pos += 2 + case '"': + buf[pos] = '\\' + buf[pos+1] = '"' + pos += 2 + case '\\': + buf[pos] = '\\' + buf[pos+1] = '\\' + pos += 2 + default: + buf[pos] = c + pos++ + } + } + + return buf[:pos] +} + +// escapeBytesQuotes escapes apostrophes in []byte by doubling them up. +// This escapes the contents of a string by doubling up any apostrophes that +// it contains. This is used when the NO_BACKSLASH_ESCAPES SQL_MODE is in +// effect on the server. +// https://github.com/mysql/mysql-server/blob/mysql-5.7.5/mysys/charset.c#L963-L1038 +func escapeBytesQuotes(buf, v []byte) []byte { + pos := len(buf) + buf = reserveBuffer(buf, len(v)*2) + + for _, c := range v { + if c == '\'' { + buf[pos] = '\'' + buf[pos+1] = '\'' + pos += 2 + } else { + buf[pos] = c + pos++ + } + } + + return buf[:pos] +} + +// escapeStringQuotes is similar to escapeBytesQuotes but for string. +func escapeStringQuotes(buf []byte, v string) []byte { + pos := len(buf) + buf = reserveBuffer(buf, len(v)*2) + + for i := 0; i < len(v); i++ { + c := v[i] + if c == '\'' { + buf[pos] = '\'' + buf[pos+1] = '\'' + pos += 2 + } else { + buf[pos] = c + pos++ + } + } + + return buf[:pos] +} + +/****************************************************************************** +* Sync utils * +******************************************************************************/ + +// noCopy may be embedded into structs which must not be copied +// after the first use. +// +// See https://github.com/golang/go/issues/8005#issuecomment-190753527 +// for details. +type noCopy struct{} + +// Lock is a no-op used by -copylocks checker from `go vet`. +func (*noCopy) Lock() {} + +// atomicBool is a wrapper around uint32 for usage as a boolean value with +// atomic access. +type atomicBool struct { + _noCopy noCopy + value uint32 +} + +// IsSet returns wether the current boolean value is true +func (ab *atomicBool) IsSet() bool { + return atomic.LoadUint32(&ab.value) > 0 +} + +// Set sets the value of the bool regardless of the previous value +func (ab *atomicBool) Set(value bool) { + if value { + atomic.StoreUint32(&ab.value, 1) + } else { + atomic.StoreUint32(&ab.value, 0) + } +} + +// TrySet sets the value of the bool and returns wether the value changed +func (ab *atomicBool) TrySet(value bool) bool { + if value { + return atomic.SwapUint32(&ab.value, 1) == 0 + } + return atomic.SwapUint32(&ab.value, 0) > 0 +} + +// atomicError is a wrapper for atomically accessed error values +type atomicError struct { + _noCopy noCopy + value atomic.Value +} + +// Set sets the error value regardless of the previous value. +// The value must not be nil +func (ae *atomicError) Set(value error) { + ae.value.Store(value) +} + +// Value returns the current error value +func (ae *atomicError) Value() error { + if v := ae.value.Load(); v != nil { + // this will panic if the value doesn't implement the error interface + return v.(error) + } + return nil +} diff --git a/vendor/github.com/go-sql-driver/mysql/utils_go17.go b/vendor/github.com/go-sql-driver/mysql/utils_go17.go new file mode 100644 index 0000000000..f595634567 --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/utils_go17.go @@ -0,0 +1,40 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +// +build go1.7 +// +build !go1.8 + +package mysql + +import "crypto/tls" + +func cloneTLSConfig(c *tls.Config) *tls.Config { + return &tls.Config{ + Rand: c.Rand, + Time: c.Time, + Certificates: c.Certificates, + NameToCertificate: c.NameToCertificate, + GetCertificate: c.GetCertificate, + RootCAs: c.RootCAs, + NextProtos: c.NextProtos, + ServerName: c.ServerName, + ClientAuth: c.ClientAuth, + ClientCAs: c.ClientCAs, + InsecureSkipVerify: c.InsecureSkipVerify, + CipherSuites: c.CipherSuites, + PreferServerCipherSuites: c.PreferServerCipherSuites, + SessionTicketsDisabled: c.SessionTicketsDisabled, + SessionTicketKey: c.SessionTicketKey, + ClientSessionCache: c.ClientSessionCache, + MinVersion: c.MinVersion, + MaxVersion: c.MaxVersion, + CurvePreferences: c.CurvePreferences, + DynamicRecordSizingDisabled: c.DynamicRecordSizingDisabled, + Renegotiation: c.Renegotiation, + } +} diff --git a/vendor/github.com/go-sql-driver/mysql/utils_go18.go b/vendor/github.com/go-sql-driver/mysql/utils_go18.go new file mode 100644 index 0000000000..c35c2a6aab --- /dev/null +++ b/vendor/github.com/go-sql-driver/mysql/utils_go18.go @@ -0,0 +1,50 @@ +// Go MySQL Driver - A MySQL-Driver for Go's database/sql package +// +// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved. +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +// +build go1.8 + +package mysql + +import ( + "crypto/tls" + "database/sql" + "database/sql/driver" + "errors" + "fmt" +) + +func cloneTLSConfig(c *tls.Config) *tls.Config { + return c.Clone() +} + +func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) { + dargs := make([]driver.Value, len(named)) + for n, param := range named { + if len(param.Name) > 0 { + // TODO: support the use of Named Parameters #561 + return nil, errors.New("mysql: driver does not support the use of Named Parameters") + } + dargs[n] = param.Value + } + return dargs, nil +} + +func mapIsolationLevel(level driver.IsolationLevel) (string, error) { + switch sql.IsolationLevel(level) { + case sql.LevelRepeatableRead: + return "REPEATABLE READ", nil + case sql.LevelReadCommitted: + return "READ COMMITTED", nil + case sql.LevelReadUncommitted: + return "READ UNCOMMITTED", nil + case sql.LevelSerializable: + return "SERIALIZABLE", nil + default: + return "", fmt.Errorf("mysql: unsupported isolation level: %v", level) + } +} diff --git a/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/generic.go b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/generic.go index 7cead0ad7d..b5a3edc501 100644 --- a/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/generic.go +++ b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/generic.go @@ -16,7 +16,7 @@ import ( type Generic struct { // revision must be first to ensure that this is properly aligned for atomic.LoadInt64 - revision int64 + revision int64 db *sql.DB @@ -64,7 +64,7 @@ func (g *Generic) Start(ctx context.Context, db *sql.DB) error { err = g.cleanup(ctx) if err != nil { - logrus.Errorf("Failed to cleanup duplicate entries") + logrus.Errorf("Failed to cleanup duplicate entries: %v", err) } } } @@ -209,14 +209,12 @@ func (g *Generic) Update(ctx context.Context, key string, value []byte, revision func (g *Generic) ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error) { trace := utiltrace.New(fmt.Sprintf("SQL DB ExecContext query: %s keys: %v", query, args)) defer trace.LogIfLong(500 * time.Millisecond) - return g.db.ExecContext(ctx, query, args...) } func (g *Generic) QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) { trace := utiltrace.New(fmt.Sprintf("SQL DB QueryContext query: %s keys: %v", query, args)) defer trace.LogIfLong(500 * time.Millisecond) - return g.db.QueryContext(ctx, query, args...) } diff --git a/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/mysql/mysql.go b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/mysql/mysql.go new file mode 100644 index 0000000000..f1e3fbe62c --- /dev/null +++ b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/mysql/mysql.go @@ -0,0 +1,128 @@ +package mysql + +import ( + "database/sql" + "strings" + + "github.com/go-sql-driver/mysql" + "github.com/ibuildthecloud/kvsql/clientv3/driver" +) + +var ( + fieldList = "name, value, old_value, old_revision, create_revision, revision, ttl, version, del" + baseList = ` +SELECT kv.id, kv.name, kv.value, kv.old_value, kv.old_revision, kv.create_revision, kv.revision, kv.ttl, kv.version, kv.del +FROM key_value kv + INNER JOIN + ( + SELECT MAX(revision) revision, kvi.name + FROM key_value kvi + %REV% + GROUP BY kvi.name + ) AS r + ON r.name = kv.name AND r.revision = kv.revision +WHERE kv.name like ? %RES% ORDER BY kv.name ASC limit ? +` + insertSQL = ` +INSERT INTO key_value(` + fieldList + `) + VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)` + + schema = []string{ + `create table if not exists key_value + ( + name TEXT, + value BLOB, + create_revision INTEGER, + revision INTEGER, + ttl INTEGER, + version INTEGER, + del INTEGER, + old_value BLOB, + old_revision INTEGER, + id INTEGER AUTO_INCREMENT, + PRIMARY KEY (id) + )`, + } + nameIdx = "create index name_idx on key_value (name(100))" + revisionIdx = "create index revision_idx on key_value (revision)" + createDB = "create database if not exists kubernetes" +) + +func NewMySQL() *driver.Generic { + return &driver.Generic{ + CleanupSQL: "DELETE FROM key_value WHERE ttl > 0 AND ttl < ?", + GetSQL: "SELECT id, " + fieldList + " FROM key_value WHERE name = ? ORDER BY revision DESC limit ?", + ListSQL: strings.Replace(strings.Replace(baseList, "%REV%", "", -1), "%RES%", "", -1), + ListRevisionSQL: strings.Replace(strings.Replace(baseList, "%REV%", "WHERE kvi.revision >= ?", -1), "%RES%", "", -1), + ListResumeSQL: strings.Replace(strings.Replace(baseList, "%REV%", "WHERE kvi.revision <= ?", -1), + "%RES%", "and kv.name > ? ", -1), + InsertSQL: insertSQL, + ReplaySQL: "SELECT id, " + fieldList + " FROM key_value WHERE name like ? and revision >= ? ORDER BY revision ASC", + GetRevisionSQL: "SELECT MAX(revision) FROM key_value", + ToDeleteSQL: "SELECT count(*), name, max(revision) FROM key_value GROUP BY name,del HAVING count(*) > 1 or (count(*)=1 and del=1)", + DeleteOldSQL: "DELETE FROM key_value WHERE name = ? AND (revision < ? OR (revision = ? AND del = 1))", + } +} + +func Open(dataSourceName string) (*sql.DB, error) { + if dataSourceName == "" { + dataSourceName = "root@unix(/var/run/mysqld/mysqld.sock)/" + } + // get database name + dsList := strings.Split(dataSourceName, "/") + databaseName := dsList[len(dsList)-1] + if databaseName == "" { + if err := createDBIfNotExist(dataSourceName); err != nil { + return nil, err + } + dataSourceName = dataSourceName + "kubernetes" + } + db, err := sql.Open("mysql", dataSourceName) + if err != nil { + return nil, err + } + + for _, stmt := range schema { + _, err := db.Exec(stmt) + if err != nil { + return nil, err + } + } + // check if duplicate indexes + indexes := []string{ + nameIdx, + revisionIdx} + + for _, idx := range indexes { + err := createIndex(db, idx) + if err != nil { + return nil, err + } + } + + return db, nil +} + +func createDBIfNotExist(dataSourceName string) error { + db, err := sql.Open("mysql", dataSourceName) + if err != nil { + return err + } + _, err = db.Exec(createDB) + if err != nil { + return err + } + return nil +} + +func createIndex(db *sql.DB, indexStmt string) error { + _, err := db.Exec(indexStmt) + if err != nil { + // check if its a duplicate error + if err.(*mysql.MySQLError).Number == 1061 { + return nil + } + return err + } + return nil +} diff --git a/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/pgsql/pgsql.go b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/pgsql/pgsql.go new file mode 100644 index 0000000000..d6a754c64f --- /dev/null +++ b/vendor/github.com/ibuildthecloud/kvsql/clientv3/driver/pgsql/pgsql.go @@ -0,0 +1,117 @@ +package pgsql + +import ( + "database/sql" + "regexp" + "strconv" + "strings" + + "github.com/ibuildthecloud/kvsql/clientv3/driver" + "github.com/lib/pq" +) + +var ( + fieldList = "name, value, old_value, old_revision, create_revision, revision, ttl, version, del" + baseList = ` +SELECT kv.id, kv.name, kv.value, kv.old_value, kv.old_revision, kv.create_revision, kv.revision, kv.ttl, kv.version, kv.del +FROM key_value kv + INNER JOIN + ( + SELECT MAX(revision) revision, kvi.name + FROM key_value kvi + %REV% + GROUP BY kvi.name + ) AS r + ON r.name = kv.name AND r.revision = kv.revision +WHERE kv.name like ? %RES% ORDER BY kv.name ASC limit ? +` + insertSQL = ` +INSERT INTO key_value(` + fieldList + `) + VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)` + + schema = []string{ + `create table if not exists key_value + ( + name TEXT, + value bytea, + create_revision INTEGER, + revision INTEGER, + ttl INTEGER, + version INTEGER, + del INTEGER, + old_value bytea, + id SERIAL PRIMARY KEY, + old_revision INTEGER + );`, + `create index if not exists name_idx on key_value (name)`, + `create index if not exists revision_idx on key_value (revision)`, + } + createDB = "create database kubernetes" +) + +func NewPGSQL() *driver.Generic { + return &driver.Generic{ + CleanupSQL: q("DELETE FROM key_value WHERE ttl > 0 AND ttl < ?"), + GetSQL: q("SELECT id, " + fieldList + " FROM key_value WHERE name=? ORDER BY revision DESC limit ?"), + ListSQL: q(strings.Replace(strings.Replace(baseList, "%REV%", "", -1), "%RES%", "", -1)), + ListRevisionSQL: q(strings.Replace(strings.Replace(baseList, "%REV%", "WHERE kvi.revision>=?", -1), "%RES%", "", -1)), + ListResumeSQL: q(strings.Replace(strings.Replace(baseList, "%REV%", "WHERE kvi.revision<=?", -1), + "%RES%", "and kv.name > ? ", -1)), + InsertSQL: q(insertSQL), + ReplaySQL: q("SELECT id, " + fieldList + " FROM key_value WHERE name like ? and revision>=? ORDER BY revision ASC"), + GetRevisionSQL: q("SELECT MAX(revision) FROM key_value"), + ToDeleteSQL: q("SELECT count(*), name, max(revision) FROM key_value GROUP BY name,del HAVING count(*) > 1 or (count(*)=1 and del=1)"), + DeleteOldSQL: q("DELETE FROM key_value WHERE name=? AND (revision /dev/null <<-config + local all all trust + hostnossl all pqgossltest 127.0.0.1/32 reject + hostnossl all pqgosslcert 127.0.0.1/32 reject + hostssl all pqgossltest 127.0.0.1/32 trust + hostssl all pqgosslcert 127.0.0.1/32 cert + host all all 127.0.0.1/32 trust + hostnossl all pqgossltest ::1/128 reject + hostnossl all pqgosslcert ::1/128 reject + hostssl all pqgossltest ::1/128 trust + hostssl all pqgosslcert ::1/128 cert + host all all ::1/128 trust + config + + xargs sudo install -o postgres -g postgres -m 600 -t /var/lib/postgresql/$PGVERSION/main/ <<-certificates + certs/root.crt + certs/server.crt + certs/server.key + certificates + + sort -VCu <<-versions || + $PGVERSION + 9.2 + versions + sudo tee -a /etc/postgresql/$PGVERSION/main/postgresql.conf > /dev/null <<-config + ssl_ca_file = 'root.crt' + ssl_cert_file = 'server.crt' + ssl_key_file = 'server.key' + config + + echo 127.0.0.1 postgres | sudo tee -a /etc/hosts > /dev/null + + sudo service postgresql restart +} + +postgresql_install() { + xargs sudo apt-get -y -o Dpkg::Options::='--force-confdef' -o Dpkg::Options::='--force-confnew' install <<-packages + postgresql-$PGVERSION + postgresql-server-dev-$PGVERSION + postgresql-contrib-$PGVERSION + packages +} + +postgresql_uninstall() { + sudo service postgresql stop + xargs sudo apt-get -y --purge remove <<-packages + libpq-dev + libpq5 + postgresql + postgresql-client-common + postgresql-common + packages + sudo rm -rf /var/lib/postgresql +} + +megacheck_install() { + # Lock megacheck version at $MEGACHECK_VERSION to prevent spontaneous + # new error messages in old code. + go get -d honnef.co/go/tools/... + git -C $GOPATH/src/honnef.co/go/tools/ checkout $MEGACHECK_VERSION + go install honnef.co/go/tools/cmd/megacheck + megacheck --version +} + +golint_install() { + go get golang.org/x/lint/golint +} + +$1 diff --git a/vendor/github.com/lib/pq/.travis.yml b/vendor/github.com/lib/pq/.travis.yml new file mode 100644 index 0000000000..f0305809f4 --- /dev/null +++ b/vendor/github.com/lib/pq/.travis.yml @@ -0,0 +1,50 @@ +language: go + +go: + - 1.9.x + - 1.10.x + - 1.11.x + - master + +sudo: true + +env: + global: + - PGUSER=postgres + - PQGOSSLTESTS=1 + - PQSSLCERTTEST_PATH=$PWD/certs + - PGHOST=127.0.0.1 + - MEGACHECK_VERSION=2017.2.2 + matrix: + - PGVERSION=10 + - PGVERSION=9.6 + - PGVERSION=9.5 + - PGVERSION=9.4 + - PGVERSION=9.3 + - PGVERSION=9.2 + - PGVERSION=9.1 + - PGVERSION=9.0 + +before_install: + - ./.travis.sh postgresql_uninstall + - ./.travis.sh pgdg_repository + - ./.travis.sh postgresql_install + - ./.travis.sh postgresql_configure + - ./.travis.sh client_configure + - ./.travis.sh megacheck_install + - ./.travis.sh golint_install + - go get golang.org/x/tools/cmd/goimports + +before_script: + - createdb pqgotest + - createuser -DRS pqgossltest + - createuser -DRS pqgosslcert + +script: + - > + goimports -d -e $(find -name '*.go') | awk '{ print } END { exit NR == 0 ? 0 : 1 }' + - go vet ./... + - megacheck -go 1.9 ./... + - golint ./... + - PQTEST_BINARY_PARAMETERS=no go test -race -v ./... + - PQTEST_BINARY_PARAMETERS=yes go test -race -v ./... diff --git a/vendor/github.com/lib/pq/CONTRIBUTING.md b/vendor/github.com/lib/pq/CONTRIBUTING.md new file mode 100644 index 0000000000..84c937f156 --- /dev/null +++ b/vendor/github.com/lib/pq/CONTRIBUTING.md @@ -0,0 +1,29 @@ +## Contributing to pq + +`pq` has a backlog of pull requests, but contributions are still very +much welcome. You can help with patch review, submitting bug reports, +or adding new functionality. There is no formal style guide, but +please conform to the style of existing code and general Go formatting +conventions when submitting patches. + +### Patch review + +Help review existing open pull requests by commenting on the code or +proposed functionality. + +### Bug reports + +We appreciate any bug reports, but especially ones with self-contained +(doesn't depend on code outside of pq), minimal (can't be simplified +further) test cases. It's especially helpful if you can submit a pull +request with just the failing test case (you'll probably want to +pattern it after the tests in +[conn_test.go](https://github.com/lib/pq/blob/master/conn_test.go). + +### New functionality + +There are a number of pending patches for new functionality, so +additional feature patches will take a while to merge. Still, patches +are generally reviewed based on usefulness and complexity in addition +to time-in-queue, so if you have a knockout idea, take a shot. Feel +free to open an issue discussion your proposed patch beforehand. diff --git a/vendor/github.com/lib/pq/LICENSE.md b/vendor/github.com/lib/pq/LICENSE.md new file mode 100644 index 0000000000..5773904a30 --- /dev/null +++ b/vendor/github.com/lib/pq/LICENSE.md @@ -0,0 +1,8 @@ +Copyright (c) 2011-2013, 'pq' Contributors +Portions Copyright (C) 2011 Blake Mizerany + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/vendor/github.com/lib/pq/README.md b/vendor/github.com/lib/pq/README.md new file mode 100644 index 0000000000..385fe73508 --- /dev/null +++ b/vendor/github.com/lib/pq/README.md @@ -0,0 +1,95 @@ +# pq - A pure Go postgres driver for Go's database/sql package + +[![GoDoc](https://godoc.org/github.com/lib/pq?status.svg)](https://godoc.org/github.com/lib/pq) +[![Build Status](https://travis-ci.org/lib/pq.svg?branch=master)](https://travis-ci.org/lib/pq) + +## Install + + go get github.com/lib/pq + +## Docs + +For detailed documentation and basic usage examples, please see the package +documentation at . + +## Tests + +`go test` is used for testing. See [TESTS.md](TESTS.md) for more details. + +## Features + +* SSL +* Handles bad connections for `database/sql` +* Scan `time.Time` correctly (i.e. `timestamp[tz]`, `time[tz]`, `date`) +* Scan binary blobs correctly (i.e. `bytea`) +* Package for `hstore` support +* COPY FROM support +* pq.ParseURL for converting urls to connection strings for sql.Open. +* Many libpq compatible environment variables +* Unix socket support +* Notifications: `LISTEN`/`NOTIFY` +* pgpass support + +## Future / Things you can help with + +* Better COPY FROM / COPY TO (see discussion in #181) + +## Thank you (alphabetical) + +Some of these contributors are from the original library `bmizerany/pq.go` whose +code still exists in here. + +* Andy Balholm (andybalholm) +* Ben Berkert (benburkert) +* Benjamin Heatwole (bheatwole) +* Bill Mill (llimllib) +* Bjørn Madsen (aeons) +* Blake Gentry (bgentry) +* Brad Fitzpatrick (bradfitz) +* Charlie Melbye (cmelbye) +* Chris Bandy (cbandy) +* Chris Gilling (cgilling) +* Chris Walsh (cwds) +* Dan Sosedoff (sosedoff) +* Daniel Farina (fdr) +* Eric Chlebek (echlebek) +* Eric Garrido (minusnine) +* Eric Urban (hydrogen18) +* Everyone at The Go Team +* Evan Shaw (edsrzf) +* Ewan Chou (coocood) +* Fazal Majid (fazalmajid) +* Federico Romero (federomero) +* Fumin (fumin) +* Gary Burd (garyburd) +* Heroku (heroku) +* James Pozdena (jpoz) +* Jason McVetta (jmcvetta) +* Jeremy Jay (pbnjay) +* Joakim Sernbrant (serbaut) +* John Gallagher (jgallagher) +* Jonathan Rudenberg (titanous) +* Joël Stemmer (jstemmer) +* Kamil Kisiel (kisielk) +* Kelly Dunn (kellydunn) +* Keith Rarick (kr) +* Kir Shatrov (kirs) +* Lann Martin (lann) +* Maciek Sakrejda (uhoh-itsmaciek) +* Marc Brinkmann (mbr) +* Marko Tiikkaja (johto) +* Matt Newberry (MattNewberry) +* Matt Robenolt (mattrobenolt) +* Martin Olsen (martinolsen) +* Mike Lewis (mikelikespie) +* Nicolas Patry (Narsil) +* Oliver Tonnhofer (olt) +* Patrick Hayes (phayes) +* Paul Hammond (paulhammond) +* Ryan Smith (ryandotsmith) +* Samuel Stauffer (samuel) +* Timothée Peignier (cyberdelia) +* Travis Cline (tmc) +* TruongSinh Tran-Nguyen (truongsinh) +* Yaismel Miranda (ympons) +* notedit (notedit) diff --git a/vendor/github.com/lib/pq/TESTS.md b/vendor/github.com/lib/pq/TESTS.md new file mode 100644 index 0000000000..f05021115b --- /dev/null +++ b/vendor/github.com/lib/pq/TESTS.md @@ -0,0 +1,33 @@ +# Tests + +## Running Tests + +`go test` is used for testing. A running PostgreSQL +server is required, with the ability to log in. The +database to connect to test with is "pqgotest," on +"localhost" but these can be overridden using [environment +variables](https://www.postgresql.org/docs/9.3/static/libpq-envars.html). + +Example: + + PGHOST=/run/postgresql go test + +## Benchmarks + +A benchmark suite can be run as part of the tests: + + go test -bench . + +## Example setup (Docker) + +Run a postgres container: + +``` +docker run --expose 5432:5432 postgres +``` + +Run tests: + +``` +PGHOST=localhost PGPORT=5432 PGUSER=postgres PGSSLMODE=disable PGDATABASE=postgres go test +``` diff --git a/vendor/github.com/lib/pq/array.go b/vendor/github.com/lib/pq/array.go new file mode 100644 index 0000000000..e4933e2276 --- /dev/null +++ b/vendor/github.com/lib/pq/array.go @@ -0,0 +1,756 @@ +package pq + +import ( + "bytes" + "database/sql" + "database/sql/driver" + "encoding/hex" + "fmt" + "reflect" + "strconv" + "strings" +) + +var typeByteSlice = reflect.TypeOf([]byte{}) +var typeDriverValuer = reflect.TypeOf((*driver.Valuer)(nil)).Elem() +var typeSQLScanner = reflect.TypeOf((*sql.Scanner)(nil)).Elem() + +// Array returns the optimal driver.Valuer and sql.Scanner for an array or +// slice of any dimension. +// +// For example: +// db.Query(`SELECT * FROM t WHERE id = ANY($1)`, pq.Array([]int{235, 401})) +// +// var x []sql.NullInt64 +// db.QueryRow('SELECT ARRAY[235, 401]').Scan(pq.Array(&x)) +// +// Scanning multi-dimensional arrays is not supported. Arrays where the lower +// bound is not one (such as `[0:0]={1}') are not supported. +func Array(a interface{}) interface { + driver.Valuer + sql.Scanner +} { + switch a := a.(type) { + case []bool: + return (*BoolArray)(&a) + case []float64: + return (*Float64Array)(&a) + case []int64: + return (*Int64Array)(&a) + case []string: + return (*StringArray)(&a) + + case *[]bool: + return (*BoolArray)(a) + case *[]float64: + return (*Float64Array)(a) + case *[]int64: + return (*Int64Array)(a) + case *[]string: + return (*StringArray)(a) + } + + return GenericArray{a} +} + +// ArrayDelimiter may be optionally implemented by driver.Valuer or sql.Scanner +// to override the array delimiter used by GenericArray. +type ArrayDelimiter interface { + // ArrayDelimiter returns the delimiter character(s) for this element's type. + ArrayDelimiter() string +} + +// BoolArray represents a one-dimensional array of the PostgreSQL boolean type. +type BoolArray []bool + +// Scan implements the sql.Scanner interface. +func (a *BoolArray) Scan(src interface{}) error { + switch src := src.(type) { + case []byte: + return a.scanBytes(src) + case string: + return a.scanBytes([]byte(src)) + case nil: + *a = nil + return nil + } + + return fmt.Errorf("pq: cannot convert %T to BoolArray", src) +} + +func (a *BoolArray) scanBytes(src []byte) error { + elems, err := scanLinearArray(src, []byte{','}, "BoolArray") + if err != nil { + return err + } + if *a != nil && len(elems) == 0 { + *a = (*a)[:0] + } else { + b := make(BoolArray, len(elems)) + for i, v := range elems { + if len(v) != 1 { + return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v) + } + switch v[0] { + case 't': + b[i] = true + case 'f': + b[i] = false + default: + return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v) + } + } + *a = b + } + return nil +} + +// Value implements the driver.Valuer interface. +func (a BoolArray) Value() (driver.Value, error) { + if a == nil { + return nil, nil + } + + if n := len(a); n > 0 { + // There will be exactly two curly brackets, N bytes of values, + // and N-1 bytes of delimiters. + b := make([]byte, 1+2*n) + + for i := 0; i < n; i++ { + b[2*i] = ',' + if a[i] { + b[1+2*i] = 't' + } else { + b[1+2*i] = 'f' + } + } + + b[0] = '{' + b[2*n] = '}' + + return string(b), nil + } + + return "{}", nil +} + +// ByteaArray represents a one-dimensional array of the PostgreSQL bytea type. +type ByteaArray [][]byte + +// Scan implements the sql.Scanner interface. +func (a *ByteaArray) Scan(src interface{}) error { + switch src := src.(type) { + case []byte: + return a.scanBytes(src) + case string: + return a.scanBytes([]byte(src)) + case nil: + *a = nil + return nil + } + + return fmt.Errorf("pq: cannot convert %T to ByteaArray", src) +} + +func (a *ByteaArray) scanBytes(src []byte) error { + elems, err := scanLinearArray(src, []byte{','}, "ByteaArray") + if err != nil { + return err + } + if *a != nil && len(elems) == 0 { + *a = (*a)[:0] + } else { + b := make(ByteaArray, len(elems)) + for i, v := range elems { + b[i], err = parseBytea(v) + if err != nil { + return fmt.Errorf("could not parse bytea array index %d: %s", i, err.Error()) + } + } + *a = b + } + return nil +} + +// Value implements the driver.Valuer interface. It uses the "hex" format which +// is only supported on PostgreSQL 9.0 or newer. +func (a ByteaArray) Value() (driver.Value, error) { + if a == nil { + return nil, nil + } + + if n := len(a); n > 0 { + // There will be at least two curly brackets, 2*N bytes of quotes, + // 3*N bytes of hex formatting, and N-1 bytes of delimiters. + size := 1 + 6*n + for _, x := range a { + size += hex.EncodedLen(len(x)) + } + + b := make([]byte, size) + + for i, s := 0, b; i < n; i++ { + o := copy(s, `,"\\x`) + o += hex.Encode(s[o:], a[i]) + s[o] = '"' + s = s[o+1:] + } + + b[0] = '{' + b[size-1] = '}' + + return string(b), nil + } + + return "{}", nil +} + +// Float64Array represents a one-dimensional array of the PostgreSQL double +// precision type. +type Float64Array []float64 + +// Scan implements the sql.Scanner interface. +func (a *Float64Array) Scan(src interface{}) error { + switch src := src.(type) { + case []byte: + return a.scanBytes(src) + case string: + return a.scanBytes([]byte(src)) + case nil: + *a = nil + return nil + } + + return fmt.Errorf("pq: cannot convert %T to Float64Array", src) +} + +func (a *Float64Array) scanBytes(src []byte) error { + elems, err := scanLinearArray(src, []byte{','}, "Float64Array") + if err != nil { + return err + } + if *a != nil && len(elems) == 0 { + *a = (*a)[:0] + } else { + b := make(Float64Array, len(elems)) + for i, v := range elems { + if b[i], err = strconv.ParseFloat(string(v), 64); err != nil { + return fmt.Errorf("pq: parsing array element index %d: %v", i, err) + } + } + *a = b + } + return nil +} + +// Value implements the driver.Valuer interface. +func (a Float64Array) Value() (driver.Value, error) { + if a == nil { + return nil, nil + } + + if n := len(a); n > 0 { + // There will be at least two curly brackets, N bytes of values, + // and N-1 bytes of delimiters. + b := make([]byte, 1, 1+2*n) + b[0] = '{' + + b = strconv.AppendFloat(b, a[0], 'f', -1, 64) + for i := 1; i < n; i++ { + b = append(b, ',') + b = strconv.AppendFloat(b, a[i], 'f', -1, 64) + } + + return string(append(b, '}')), nil + } + + return "{}", nil +} + +// GenericArray implements the driver.Valuer and sql.Scanner interfaces for +// an array or slice of any dimension. +type GenericArray struct{ A interface{} } + +func (GenericArray) evaluateDestination(rt reflect.Type) (reflect.Type, func([]byte, reflect.Value) error, string) { + var assign func([]byte, reflect.Value) error + var del = "," + + // TODO calculate the assign function for other types + // TODO repeat this section on the element type of arrays or slices (multidimensional) + { + if reflect.PtrTo(rt).Implements(typeSQLScanner) { + // dest is always addressable because it is an element of a slice. + assign = func(src []byte, dest reflect.Value) (err error) { + ss := dest.Addr().Interface().(sql.Scanner) + if src == nil { + err = ss.Scan(nil) + } else { + err = ss.Scan(src) + } + return + } + goto FoundType + } + + assign = func([]byte, reflect.Value) error { + return fmt.Errorf("pq: scanning to %s is not implemented; only sql.Scanner", rt) + } + } + +FoundType: + + if ad, ok := reflect.Zero(rt).Interface().(ArrayDelimiter); ok { + del = ad.ArrayDelimiter() + } + + return rt, assign, del +} + +// Scan implements the sql.Scanner interface. +func (a GenericArray) Scan(src interface{}) error { + dpv := reflect.ValueOf(a.A) + switch { + case dpv.Kind() != reflect.Ptr: + return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A) + case dpv.IsNil(): + return fmt.Errorf("pq: destination %T is nil", a.A) + } + + dv := dpv.Elem() + switch dv.Kind() { + case reflect.Slice: + case reflect.Array: + default: + return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A) + } + + switch src := src.(type) { + case []byte: + return a.scanBytes(src, dv) + case string: + return a.scanBytes([]byte(src), dv) + case nil: + if dv.Kind() == reflect.Slice { + dv.Set(reflect.Zero(dv.Type())) + return nil + } + } + + return fmt.Errorf("pq: cannot convert %T to %s", src, dv.Type()) +} + +func (a GenericArray) scanBytes(src []byte, dv reflect.Value) error { + dtype, assign, del := a.evaluateDestination(dv.Type().Elem()) + dims, elems, err := parseArray(src, []byte(del)) + if err != nil { + return err + } + + // TODO allow multidimensional + + if len(dims) > 1 { + return fmt.Errorf("pq: scanning from multidimensional ARRAY%s is not implemented", + strings.Replace(fmt.Sprint(dims), " ", "][", -1)) + } + + // Treat a zero-dimensional array like an array with a single dimension of zero. + if len(dims) == 0 { + dims = append(dims, 0) + } + + for i, rt := 0, dv.Type(); i < len(dims); i, rt = i+1, rt.Elem() { + switch rt.Kind() { + case reflect.Slice: + case reflect.Array: + if rt.Len() != dims[i] { + return fmt.Errorf("pq: cannot convert ARRAY%s to %s", + strings.Replace(fmt.Sprint(dims), " ", "][", -1), dv.Type()) + } + default: + // TODO handle multidimensional + } + } + + values := reflect.MakeSlice(reflect.SliceOf(dtype), len(elems), len(elems)) + for i, e := range elems { + if err := assign(e, values.Index(i)); err != nil { + return fmt.Errorf("pq: parsing array element index %d: %v", i, err) + } + } + + // TODO handle multidimensional + + switch dv.Kind() { + case reflect.Slice: + dv.Set(values.Slice(0, dims[0])) + case reflect.Array: + for i := 0; i < dims[0]; i++ { + dv.Index(i).Set(values.Index(i)) + } + } + + return nil +} + +// Value implements the driver.Valuer interface. +func (a GenericArray) Value() (driver.Value, error) { + if a.A == nil { + return nil, nil + } + + rv := reflect.ValueOf(a.A) + + switch rv.Kind() { + case reflect.Slice: + if rv.IsNil() { + return nil, nil + } + case reflect.Array: + default: + return nil, fmt.Errorf("pq: Unable to convert %T to array", a.A) + } + + if n := rv.Len(); n > 0 { + // There will be at least two curly brackets, N bytes of values, + // and N-1 bytes of delimiters. + b := make([]byte, 0, 1+2*n) + + b, _, err := appendArray(b, rv, n) + return string(b), err + } + + return "{}", nil +} + +// Int64Array represents a one-dimensional array of the PostgreSQL integer types. +type Int64Array []int64 + +// Scan implements the sql.Scanner interface. +func (a *Int64Array) Scan(src interface{}) error { + switch src := src.(type) { + case []byte: + return a.scanBytes(src) + case string: + return a.scanBytes([]byte(src)) + case nil: + *a = nil + return nil + } + + return fmt.Errorf("pq: cannot convert %T to Int64Array", src) +} + +func (a *Int64Array) scanBytes(src []byte) error { + elems, err := scanLinearArray(src, []byte{','}, "Int64Array") + if err != nil { + return err + } + if *a != nil && len(elems) == 0 { + *a = (*a)[:0] + } else { + b := make(Int64Array, len(elems)) + for i, v := range elems { + if b[i], err = strconv.ParseInt(string(v), 10, 64); err != nil { + return fmt.Errorf("pq: parsing array element index %d: %v", i, err) + } + } + *a = b + } + return nil +} + +// Value implements the driver.Valuer interface. +func (a Int64Array) Value() (driver.Value, error) { + if a == nil { + return nil, nil + } + + if n := len(a); n > 0 { + // There will be at least two curly brackets, N bytes of values, + // and N-1 bytes of delimiters. + b := make([]byte, 1, 1+2*n) + b[0] = '{' + + b = strconv.AppendInt(b, a[0], 10) + for i := 1; i < n; i++ { + b = append(b, ',') + b = strconv.AppendInt(b, a[i], 10) + } + + return string(append(b, '}')), nil + } + + return "{}", nil +} + +// StringArray represents a one-dimensional array of the PostgreSQL character types. +type StringArray []string + +// Scan implements the sql.Scanner interface. +func (a *StringArray) Scan(src interface{}) error { + switch src := src.(type) { + case []byte: + return a.scanBytes(src) + case string: + return a.scanBytes([]byte(src)) + case nil: + *a = nil + return nil + } + + return fmt.Errorf("pq: cannot convert %T to StringArray", src) +} + +func (a *StringArray) scanBytes(src []byte) error { + elems, err := scanLinearArray(src, []byte{','}, "StringArray") + if err != nil { + return err + } + if *a != nil && len(elems) == 0 { + *a = (*a)[:0] + } else { + b := make(StringArray, len(elems)) + for i, v := range elems { + if b[i] = string(v); v == nil { + return fmt.Errorf("pq: parsing array element index %d: cannot convert nil to string", i) + } + } + *a = b + } + return nil +} + +// Value implements the driver.Valuer interface. +func (a StringArray) Value() (driver.Value, error) { + if a == nil { + return nil, nil + } + + if n := len(a); n > 0 { + // There will be at least two curly brackets, 2*N bytes of quotes, + // and N-1 bytes of delimiters. + b := make([]byte, 1, 1+3*n) + b[0] = '{' + + b = appendArrayQuotedBytes(b, []byte(a[0])) + for i := 1; i < n; i++ { + b = append(b, ',') + b = appendArrayQuotedBytes(b, []byte(a[i])) + } + + return string(append(b, '}')), nil + } + + return "{}", nil +} + +// appendArray appends rv to the buffer, returning the extended buffer and +// the delimiter used between elements. +// +// It panics when n <= 0 or rv's Kind is not reflect.Array nor reflect.Slice. +func appendArray(b []byte, rv reflect.Value, n int) ([]byte, string, error) { + var del string + var err error + + b = append(b, '{') + + if b, del, err = appendArrayElement(b, rv.Index(0)); err != nil { + return b, del, err + } + + for i := 1; i < n; i++ { + b = append(b, del...) + if b, del, err = appendArrayElement(b, rv.Index(i)); err != nil { + return b, del, err + } + } + + return append(b, '}'), del, nil +} + +// appendArrayElement appends rv to the buffer, returning the extended buffer +// and the delimiter to use before the next element. +// +// When rv's Kind is neither reflect.Array nor reflect.Slice, it is converted +// using driver.DefaultParameterConverter and the resulting []byte or string +// is double-quoted. +// +// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO +func appendArrayElement(b []byte, rv reflect.Value) ([]byte, string, error) { + if k := rv.Kind(); k == reflect.Array || k == reflect.Slice { + if t := rv.Type(); t != typeByteSlice && !t.Implements(typeDriverValuer) { + if n := rv.Len(); n > 0 { + return appendArray(b, rv, n) + } + + return b, "", nil + } + } + + var del = "," + var err error + var iv interface{} = rv.Interface() + + if ad, ok := iv.(ArrayDelimiter); ok { + del = ad.ArrayDelimiter() + } + + if iv, err = driver.DefaultParameterConverter.ConvertValue(iv); err != nil { + return b, del, err + } + + switch v := iv.(type) { + case nil: + return append(b, "NULL"...), del, nil + case []byte: + return appendArrayQuotedBytes(b, v), del, nil + case string: + return appendArrayQuotedBytes(b, []byte(v)), del, nil + } + + b, err = appendValue(b, iv) + return b, del, err +} + +func appendArrayQuotedBytes(b, v []byte) []byte { + b = append(b, '"') + for { + i := bytes.IndexAny(v, `"\`) + if i < 0 { + b = append(b, v...) + break + } + if i > 0 { + b = append(b, v[:i]...) + } + b = append(b, '\\', v[i]) + v = v[i+1:] + } + return append(b, '"') +} + +func appendValue(b []byte, v driver.Value) ([]byte, error) { + return append(b, encode(nil, v, 0)...), nil +} + +// parseArray extracts the dimensions and elements of an array represented in +// text format. Only representations emitted by the backend are supported. +// Notably, whitespace around brackets and delimiters is significant, and NULL +// is case-sensitive. +// +// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO +func parseArray(src, del []byte) (dims []int, elems [][]byte, err error) { + var depth, i int + + if len(src) < 1 || src[0] != '{' { + return nil, nil, fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '{', 0) + } + +Open: + for i < len(src) { + switch src[i] { + case '{': + depth++ + i++ + case '}': + elems = make([][]byte, 0) + goto Close + default: + break Open + } + } + dims = make([]int, i) + +Element: + for i < len(src) { + switch src[i] { + case '{': + if depth == len(dims) { + break Element + } + depth++ + dims[depth-1] = 0 + i++ + case '"': + var elem = []byte{} + var escape bool + for i++; i < len(src); i++ { + if escape { + elem = append(elem, src[i]) + escape = false + } else { + switch src[i] { + default: + elem = append(elem, src[i]) + case '\\': + escape = true + case '"': + elems = append(elems, elem) + i++ + break Element + } + } + } + default: + for start := i; i < len(src); i++ { + if bytes.HasPrefix(src[i:], del) || src[i] == '}' { + elem := src[start:i] + if len(elem) == 0 { + return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i) + } + if bytes.Equal(elem, []byte("NULL")) { + elem = nil + } + elems = append(elems, elem) + break Element + } + } + } + } + + for i < len(src) { + if bytes.HasPrefix(src[i:], del) && depth > 0 { + dims[depth-1]++ + i += len(del) + goto Element + } else if src[i] == '}' && depth > 0 { + dims[depth-1]++ + depth-- + i++ + } else { + return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i) + } + } + +Close: + for i < len(src) { + if src[i] == '}' && depth > 0 { + depth-- + i++ + } else { + return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i) + } + } + if depth > 0 { + err = fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '}', i) + } + if err == nil { + for _, d := range dims { + if (len(elems) % d) != 0 { + err = fmt.Errorf("pq: multidimensional arrays must have elements with matching dimensions") + } + } + } + return +} + +func scanLinearArray(src, del []byte, typ string) (elems [][]byte, err error) { + dims, elems, err := parseArray(src, del) + if err != nil { + return nil, err + } + if len(dims) > 1 { + return nil, fmt.Errorf("pq: cannot convert ARRAY%s to %s", strings.Replace(fmt.Sprint(dims), " ", "][", -1), typ) + } + return elems, err +} diff --git a/vendor/github.com/lib/pq/buf.go b/vendor/github.com/lib/pq/buf.go new file mode 100644 index 0000000000..666b0012a7 --- /dev/null +++ b/vendor/github.com/lib/pq/buf.go @@ -0,0 +1,91 @@ +package pq + +import ( + "bytes" + "encoding/binary" + + "github.com/lib/pq/oid" +) + +type readBuf []byte + +func (b *readBuf) int32() (n int) { + n = int(int32(binary.BigEndian.Uint32(*b))) + *b = (*b)[4:] + return +} + +func (b *readBuf) oid() (n oid.Oid) { + n = oid.Oid(binary.BigEndian.Uint32(*b)) + *b = (*b)[4:] + return +} + +// N.B: this is actually an unsigned 16-bit integer, unlike int32 +func (b *readBuf) int16() (n int) { + n = int(binary.BigEndian.Uint16(*b)) + *b = (*b)[2:] + return +} + +func (b *readBuf) string() string { + i := bytes.IndexByte(*b, 0) + if i < 0 { + errorf("invalid message format; expected string terminator") + } + s := (*b)[:i] + *b = (*b)[i+1:] + return string(s) +} + +func (b *readBuf) next(n int) (v []byte) { + v = (*b)[:n] + *b = (*b)[n:] + return +} + +func (b *readBuf) byte() byte { + return b.next(1)[0] +} + +type writeBuf struct { + buf []byte + pos int +} + +func (b *writeBuf) int32(n int) { + x := make([]byte, 4) + binary.BigEndian.PutUint32(x, uint32(n)) + b.buf = append(b.buf, x...) +} + +func (b *writeBuf) int16(n int) { + x := make([]byte, 2) + binary.BigEndian.PutUint16(x, uint16(n)) + b.buf = append(b.buf, x...) +} + +func (b *writeBuf) string(s string) { + b.buf = append(b.buf, (s + "\000")...) +} + +func (b *writeBuf) byte(c byte) { + b.buf = append(b.buf, c) +} + +func (b *writeBuf) bytes(v []byte) { + b.buf = append(b.buf, v...) +} + +func (b *writeBuf) wrap() []byte { + p := b.buf[b.pos:] + binary.BigEndian.PutUint32(p, uint32(len(p))) + return b.buf +} + +func (b *writeBuf) next(c byte) { + p := b.buf[b.pos:] + binary.BigEndian.PutUint32(p, uint32(len(p))) + b.pos = len(b.buf) + 1 + b.buf = append(b.buf, c, 0, 0, 0, 0) +} diff --git a/vendor/github.com/lib/pq/conn.go b/vendor/github.com/lib/pq/conn.go new file mode 100644 index 0000000000..62551a1420 --- /dev/null +++ b/vendor/github.com/lib/pq/conn.go @@ -0,0 +1,1883 @@ +package pq + +import ( + "bufio" + "context" + "crypto/md5" + "crypto/sha256" + "database/sql" + "database/sql/driver" + "encoding/binary" + "errors" + "fmt" + "io" + "net" + "os" + "os/user" + "path" + "path/filepath" + "strconv" + "strings" + "time" + "unicode" + + "github.com/lib/pq/oid" + "github.com/lib/pq/scram" +) + +// Common error types +var ( + ErrNotSupported = errors.New("pq: Unsupported command") + ErrInFailedTransaction = errors.New("pq: Could not complete operation in a failed transaction") + ErrSSLNotSupported = errors.New("pq: SSL is not enabled on the server") + ErrSSLKeyHasWorldPermissions = errors.New("pq: Private key file has group or world access. Permissions should be u=rw (0600) or less") + ErrCouldNotDetectUsername = errors.New("pq: Could not detect default username. Please provide one explicitly") + + errUnexpectedReady = errors.New("unexpected ReadyForQuery") + errNoRowsAffected = errors.New("no RowsAffected available after the empty statement") + errNoLastInsertID = errors.New("no LastInsertId available after the empty statement") +) + +// Driver is the Postgres database driver. +type Driver struct{} + +// Open opens a new connection to the database. name is a connection string. +// Most users should only use it through database/sql package from the standard +// library. +func (d *Driver) Open(name string) (driver.Conn, error) { + return Open(name) +} + +func init() { + sql.Register("postgres", &Driver{}) +} + +type parameterStatus struct { + // server version in the same format as server_version_num, or 0 if + // unavailable + serverVersion int + + // the current location based on the TimeZone value of the session, if + // available + currentLocation *time.Location +} + +type transactionStatus byte + +const ( + txnStatusIdle transactionStatus = 'I' + txnStatusIdleInTransaction transactionStatus = 'T' + txnStatusInFailedTransaction transactionStatus = 'E' +) + +func (s transactionStatus) String() string { + switch s { + case txnStatusIdle: + return "idle" + case txnStatusIdleInTransaction: + return "idle in transaction" + case txnStatusInFailedTransaction: + return "in a failed transaction" + default: + errorf("unknown transactionStatus %d", s) + } + + panic("not reached") +} + +// Dialer is the dialer interface. It can be used to obtain more control over +// how pq creates network connections. +type Dialer interface { + Dial(network, address string) (net.Conn, error) + DialTimeout(network, address string, timeout time.Duration) (net.Conn, error) +} + +type DialerContext interface { + DialContext(ctx context.Context, network, address string) (net.Conn, error) +} + +type defaultDialer struct { + d net.Dialer +} + +func (d defaultDialer) Dial(network, address string) (net.Conn, error) { + return d.d.Dial(network, address) +} +func (d defaultDialer) DialTimeout(network, address string, timeout time.Duration) (net.Conn, error) { + ctx, cancel := context.WithTimeout(context.Background(), timeout) + defer cancel() + return d.DialContext(ctx, network, address) +} +func (d defaultDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) { + return d.d.DialContext(ctx, network, address) +} + +type conn struct { + c net.Conn + buf *bufio.Reader + namei int + scratch [512]byte + txnStatus transactionStatus + txnFinish func() + + // Save connection arguments to use during CancelRequest. + dialer Dialer + opts values + + // Cancellation key data for use with CancelRequest messages. + processID int + secretKey int + + parameterStatus parameterStatus + + saveMessageType byte + saveMessageBuffer []byte + + // If true, this connection is bad and all public-facing functions should + // return ErrBadConn. + bad bool + + // If set, this connection should never use the binary format when + // receiving query results from prepared statements. Only provided for + // debugging. + disablePreparedBinaryResult bool + + // Whether to always send []byte parameters over as binary. Enables single + // round-trip mode for non-prepared Query calls. + binaryParameters bool + + // If true this connection is in the middle of a COPY + inCopy bool +} + +// Handle driver-side settings in parsed connection string. +func (cn *conn) handleDriverSettings(o values) (err error) { + boolSetting := func(key string, val *bool) error { + if value, ok := o[key]; ok { + if value == "yes" { + *val = true + } else if value == "no" { + *val = false + } else { + return fmt.Errorf("unrecognized value %q for %s", value, key) + } + } + return nil + } + + err = boolSetting("disable_prepared_binary_result", &cn.disablePreparedBinaryResult) + if err != nil { + return err + } + return boolSetting("binary_parameters", &cn.binaryParameters) +} + +func (cn *conn) handlePgpass(o values) { + // if a password was supplied, do not process .pgpass + if _, ok := o["password"]; ok { + return + } + filename := os.Getenv("PGPASSFILE") + if filename == "" { + // XXX this code doesn't work on Windows where the default filename is + // XXX %APPDATA%\postgresql\pgpass.conf + // Prefer $HOME over user.Current due to glibc bug: golang.org/issue/13470 + userHome := os.Getenv("HOME") + if userHome == "" { + user, err := user.Current() + if err != nil { + return + } + userHome = user.HomeDir + } + filename = filepath.Join(userHome, ".pgpass") + } + fileinfo, err := os.Stat(filename) + if err != nil { + return + } + mode := fileinfo.Mode() + if mode&(0x77) != 0 { + // XXX should warn about incorrect .pgpass permissions as psql does + return + } + file, err := os.Open(filename) + if err != nil { + return + } + defer file.Close() + scanner := bufio.NewScanner(io.Reader(file)) + hostname := o["host"] + ntw, _ := network(o) + port := o["port"] + db := o["dbname"] + username := o["user"] + // From: https://github.com/tg/pgpass/blob/master/reader.go + getFields := func(s string) []string { + fs := make([]string, 0, 5) + f := make([]rune, 0, len(s)) + + var esc bool + for _, c := range s { + switch { + case esc: + f = append(f, c) + esc = false + case c == '\\': + esc = true + case c == ':': + fs = append(fs, string(f)) + f = f[:0] + default: + f = append(f, c) + } + } + return append(fs, string(f)) + } + for scanner.Scan() { + line := scanner.Text() + if len(line) == 0 || line[0] == '#' { + continue + } + split := getFields(line) + if len(split) != 5 { + continue + } + if (split[0] == "*" || split[0] == hostname || (split[0] == "localhost" && (hostname == "" || ntw == "unix"))) && (split[1] == "*" || split[1] == port) && (split[2] == "*" || split[2] == db) && (split[3] == "*" || split[3] == username) { + o["password"] = split[4] + return + } + } +} + +func (cn *conn) writeBuf(b byte) *writeBuf { + cn.scratch[0] = b + return &writeBuf{ + buf: cn.scratch[:5], + pos: 1, + } +} + +// Open opens a new connection to the database. dsn is a connection string. +// Most users should only use it through database/sql package from the standard +// library. +func Open(dsn string) (_ driver.Conn, err error) { + return DialOpen(defaultDialer{}, dsn) +} + +// DialOpen opens a new connection to the database using a dialer. +func DialOpen(d Dialer, dsn string) (_ driver.Conn, err error) { + c, err := NewConnector(dsn) + if err != nil { + return nil, err + } + c.dialer = d + return c.open(context.Background()) +} + +func (c *Connector) open(ctx context.Context) (cn *conn, err error) { + // Handle any panics during connection initialization. Note that we + // specifically do *not* want to use errRecover(), as that would turn any + // connection errors into ErrBadConns, hiding the real error message from + // the user. + defer errRecoverNoErrBadConn(&err) + + o := c.opts + + cn = &conn{ + opts: o, + dialer: c.dialer, + } + err = cn.handleDriverSettings(o) + if err != nil { + return nil, err + } + cn.handlePgpass(o) + + cn.c, err = dial(ctx, c.dialer, o) + if err != nil { + return nil, err + } + + err = cn.ssl(o) + if err != nil { + return nil, err + } + + // cn.startup panics on error. Make sure we don't leak cn.c. + panicking := true + defer func() { + if panicking { + cn.c.Close() + } + }() + + cn.buf = bufio.NewReader(cn.c) + cn.startup(o) + + // reset the deadline, in case one was set (see dial) + if timeout, ok := o["connect_timeout"]; ok && timeout != "0" { + err = cn.c.SetDeadline(time.Time{}) + } + panicking = false + return cn, err +} + +func dial(ctx context.Context, d Dialer, o values) (net.Conn, error) { + network, address := network(o) + // SSL is not necessary or supported over UNIX domain sockets + if network == "unix" { + o["sslmode"] = "disable" + } + + // Zero or not specified means wait indefinitely. + if timeout, ok := o["connect_timeout"]; ok && timeout != "0" { + seconds, err := strconv.ParseInt(timeout, 10, 0) + if err != nil { + return nil, fmt.Errorf("invalid value for parameter connect_timeout: %s", err) + } + duration := time.Duration(seconds) * time.Second + + // connect_timeout should apply to the entire connection establishment + // procedure, so we both use a timeout for the TCP connection + // establishment and set a deadline for doing the initial handshake. + // The deadline is then reset after startup() is done. + deadline := time.Now().Add(duration) + var conn net.Conn + if dctx, ok := d.(DialerContext); ok { + ctx, cancel := context.WithTimeout(ctx, duration) + defer cancel() + conn, err = dctx.DialContext(ctx, network, address) + } else { + conn, err = d.DialTimeout(network, address, duration) + } + if err != nil { + return nil, err + } + err = conn.SetDeadline(deadline) + return conn, err + } + if dctx, ok := d.(DialerContext); ok { + return dctx.DialContext(ctx, network, address) + } + return d.Dial(network, address) +} + +func network(o values) (string, string) { + host := o["host"] + + if strings.HasPrefix(host, "/") { + sockPath := path.Join(host, ".s.PGSQL."+o["port"]) + return "unix", sockPath + } + + return "tcp", net.JoinHostPort(host, o["port"]) +} + +type values map[string]string + +// scanner implements a tokenizer for libpq-style option strings. +type scanner struct { + s []rune + i int +} + +// newScanner returns a new scanner initialized with the option string s. +func newScanner(s string) *scanner { + return &scanner{[]rune(s), 0} +} + +// Next returns the next rune. +// It returns 0, false if the end of the text has been reached. +func (s *scanner) Next() (rune, bool) { + if s.i >= len(s.s) { + return 0, false + } + r := s.s[s.i] + s.i++ + return r, true +} + +// SkipSpaces returns the next non-whitespace rune. +// It returns 0, false if the end of the text has been reached. +func (s *scanner) SkipSpaces() (rune, bool) { + r, ok := s.Next() + for unicode.IsSpace(r) && ok { + r, ok = s.Next() + } + return r, ok +} + +// parseOpts parses the options from name and adds them to the values. +// +// The parsing code is based on conninfo_parse from libpq's fe-connect.c +func parseOpts(name string, o values) error { + s := newScanner(name) + + for { + var ( + keyRunes, valRunes []rune + r rune + ok bool + ) + + if r, ok = s.SkipSpaces(); !ok { + break + } + + // Scan the key + for !unicode.IsSpace(r) && r != '=' { + keyRunes = append(keyRunes, r) + if r, ok = s.Next(); !ok { + break + } + } + + // Skip any whitespace if we're not at the = yet + if r != '=' { + r, ok = s.SkipSpaces() + } + + // The current character should be = + if r != '=' || !ok { + return fmt.Errorf(`missing "=" after %q in connection info string"`, string(keyRunes)) + } + + // Skip any whitespace after the = + if r, ok = s.SkipSpaces(); !ok { + // If we reach the end here, the last value is just an empty string as per libpq. + o[string(keyRunes)] = "" + break + } + + if r != '\'' { + for !unicode.IsSpace(r) { + if r == '\\' { + if r, ok = s.Next(); !ok { + return fmt.Errorf(`missing character after backslash`) + } + } + valRunes = append(valRunes, r) + + if r, ok = s.Next(); !ok { + break + } + } + } else { + quote: + for { + if r, ok = s.Next(); !ok { + return fmt.Errorf(`unterminated quoted string literal in connection string`) + } + switch r { + case '\'': + break quote + case '\\': + r, _ = s.Next() + fallthrough + default: + valRunes = append(valRunes, r) + } + } + } + + o[string(keyRunes)] = string(valRunes) + } + + return nil +} + +func (cn *conn) isInTransaction() bool { + return cn.txnStatus == txnStatusIdleInTransaction || + cn.txnStatus == txnStatusInFailedTransaction +} + +func (cn *conn) checkIsInTransaction(intxn bool) { + if cn.isInTransaction() != intxn { + cn.bad = true + errorf("unexpected transaction status %v", cn.txnStatus) + } +} + +func (cn *conn) Begin() (_ driver.Tx, err error) { + return cn.begin("") +} + +func (cn *conn) begin(mode string) (_ driver.Tx, err error) { + if cn.bad { + return nil, driver.ErrBadConn + } + defer cn.errRecover(&err) + + cn.checkIsInTransaction(false) + _, commandTag, err := cn.simpleExec("BEGIN" + mode) + if err != nil { + return nil, err + } + if commandTag != "BEGIN" { + cn.bad = true + return nil, fmt.Errorf("unexpected command tag %s", commandTag) + } + if cn.txnStatus != txnStatusIdleInTransaction { + cn.bad = true + return nil, fmt.Errorf("unexpected transaction status %v", cn.txnStatus) + } + return cn, nil +} + +func (cn *conn) closeTxn() { + if finish := cn.txnFinish; finish != nil { + finish() + } +} + +func (cn *conn) Commit() (err error) { + defer cn.closeTxn() + if cn.bad { + return driver.ErrBadConn + } + defer cn.errRecover(&err) + + cn.checkIsInTransaction(true) + // We don't want the client to think that everything is okay if it tries + // to commit a failed transaction. However, no matter what we return, + // database/sql will release this connection back into the free connection + // pool so we have to abort the current transaction here. Note that you + // would get the same behaviour if you issued a COMMIT in a failed + // transaction, so it's also the least surprising thing to do here. + if cn.txnStatus == txnStatusInFailedTransaction { + if err := cn.Rollback(); err != nil { + return err + } + return ErrInFailedTransaction + } + + _, commandTag, err := cn.simpleExec("COMMIT") + if err != nil { + if cn.isInTransaction() { + cn.bad = true + } + return err + } + if commandTag != "COMMIT" { + cn.bad = true + return fmt.Errorf("unexpected command tag %s", commandTag) + } + cn.checkIsInTransaction(false) + return nil +} + +func (cn *conn) Rollback() (err error) { + defer cn.closeTxn() + if cn.bad { + return driver.ErrBadConn + } + defer cn.errRecover(&err) + + cn.checkIsInTransaction(true) + _, commandTag, err := cn.simpleExec("ROLLBACK") + if err != nil { + if cn.isInTransaction() { + cn.bad = true + } + return err + } + if commandTag != "ROLLBACK" { + return fmt.Errorf("unexpected command tag %s", commandTag) + } + cn.checkIsInTransaction(false) + return nil +} + +func (cn *conn) gname() string { + cn.namei++ + return strconv.FormatInt(int64(cn.namei), 10) +} + +func (cn *conn) simpleExec(q string) (res driver.Result, commandTag string, err error) { + b := cn.writeBuf('Q') + b.string(q) + cn.send(b) + + for { + t, r := cn.recv1() + switch t { + case 'C': + res, commandTag = cn.parseComplete(r.string()) + case 'Z': + cn.processReadyForQuery(r) + if res == nil && err == nil { + err = errUnexpectedReady + } + // done + return + case 'E': + err = parseError(r) + case 'I': + res = emptyRows + case 'T', 'D': + // ignore any results + default: + cn.bad = true + errorf("unknown response for simple query: %q", t) + } + } +} + +func (cn *conn) simpleQuery(q string) (res *rows, err error) { + defer cn.errRecover(&err) + + b := cn.writeBuf('Q') + b.string(q) + cn.send(b) + + for { + t, r := cn.recv1() + switch t { + case 'C', 'I': + // We allow queries which don't return any results through Query as + // well as Exec. We still have to give database/sql a rows object + // the user can close, though, to avoid connections from being + // leaked. A "rows" with done=true works fine for that purpose. + if err != nil { + cn.bad = true + errorf("unexpected message %q in simple query execution", t) + } + if res == nil { + res = &rows{ + cn: cn, + } + } + // Set the result and tag to the last command complete if there wasn't a + // query already run. Although queries usually return from here and cede + // control to Next, a query with zero results does not. + if t == 'C' && res.colNames == nil { + res.result, res.tag = cn.parseComplete(r.string()) + } + res.done = true + case 'Z': + cn.processReadyForQuery(r) + // done + return + case 'E': + res = nil + err = parseError(r) + case 'D': + if res == nil { + cn.bad = true + errorf("unexpected DataRow in simple query execution") + } + // the query didn't fail; kick off to Next + cn.saveMessage(t, r) + return + case 'T': + // res might be non-nil here if we received a previous + // CommandComplete, but that's fine; just overwrite it + res = &rows{cn: cn} + res.rowsHeader = parsePortalRowDescribe(r) + + // To work around a bug in QueryRow in Go 1.2 and earlier, wait + // until the first DataRow has been received. + default: + cn.bad = true + errorf("unknown response for simple query: %q", t) + } + } +} + +type noRows struct{} + +var emptyRows noRows + +var _ driver.Result = noRows{} + +func (noRows) LastInsertId() (int64, error) { + return 0, errNoLastInsertID +} + +func (noRows) RowsAffected() (int64, error) { + return 0, errNoRowsAffected +} + +// Decides which column formats to use for a prepared statement. The input is +// an array of type oids, one element per result column. +func decideColumnFormats(colTyps []fieldDesc, forceText bool) (colFmts []format, colFmtData []byte) { + if len(colTyps) == 0 { + return nil, colFmtDataAllText + } + + colFmts = make([]format, len(colTyps)) + if forceText { + return colFmts, colFmtDataAllText + } + + allBinary := true + allText := true + for i, t := range colTyps { + switch t.OID { + // This is the list of types to use binary mode for when receiving them + // through a prepared statement. If a type appears in this list, it + // must also be implemented in binaryDecode in encode.go. + case oid.T_bytea: + fallthrough + case oid.T_int8: + fallthrough + case oid.T_int4: + fallthrough + case oid.T_int2: + fallthrough + case oid.T_uuid: + colFmts[i] = formatBinary + allText = false + + default: + allBinary = false + } + } + + if allBinary { + return colFmts, colFmtDataAllBinary + } else if allText { + return colFmts, colFmtDataAllText + } else { + colFmtData = make([]byte, 2+len(colFmts)*2) + binary.BigEndian.PutUint16(colFmtData, uint16(len(colFmts))) + for i, v := range colFmts { + binary.BigEndian.PutUint16(colFmtData[2+i*2:], uint16(v)) + } + return colFmts, colFmtData + } +} + +func (cn *conn) prepareTo(q, stmtName string) *stmt { + st := &stmt{cn: cn, name: stmtName} + + b := cn.writeBuf('P') + b.string(st.name) + b.string(q) + b.int16(0) + + b.next('D') + b.byte('S') + b.string(st.name) + + b.next('S') + cn.send(b) + + cn.readParseResponse() + st.paramTyps, st.colNames, st.colTyps = cn.readStatementDescribeResponse() + st.colFmts, st.colFmtData = decideColumnFormats(st.colTyps, cn.disablePreparedBinaryResult) + cn.readReadyForQuery() + return st +} + +func (cn *conn) Prepare(q string) (_ driver.Stmt, err error) { + if cn.bad { + return nil, driver.ErrBadConn + } + defer cn.errRecover(&err) + + if len(q) >= 4 && strings.EqualFold(q[:4], "COPY") { + s, err := cn.prepareCopyIn(q) + if err == nil { + cn.inCopy = true + } + return s, err + } + return cn.prepareTo(q, cn.gname()), nil +} + +func (cn *conn) Close() (err error) { + // Skip cn.bad return here because we always want to close a connection. + defer cn.errRecover(&err) + + // Ensure that cn.c.Close is always run. Since error handling is done with + // panics and cn.errRecover, the Close must be in a defer. + defer func() { + cerr := cn.c.Close() + if err == nil { + err = cerr + } + }() + + // Don't go through send(); ListenerConn relies on us not scribbling on the + // scratch buffer of this connection. + return cn.sendSimpleMessage('X') +} + +// Implement the "Queryer" interface +func (cn *conn) Query(query string, args []driver.Value) (driver.Rows, error) { + return cn.query(query, args) +} + +func (cn *conn) query(query string, args []driver.Value) (_ *rows, err error) { + if cn.bad { + return nil, driver.ErrBadConn + } + if cn.inCopy { + return nil, errCopyInProgress + } + defer cn.errRecover(&err) + + // Check to see if we can use the "simpleQuery" interface, which is + // *much* faster than going through prepare/exec + if len(args) == 0 { + return cn.simpleQuery(query) + } + + if cn.binaryParameters { + cn.sendBinaryModeQuery(query, args) + + cn.readParseResponse() + cn.readBindResponse() + rows := &rows{cn: cn} + rows.rowsHeader = cn.readPortalDescribeResponse() + cn.postExecuteWorkaround() + return rows, nil + } + st := cn.prepareTo(query, "") + st.exec(args) + return &rows{ + cn: cn, + rowsHeader: st.rowsHeader, + }, nil +} + +// Implement the optional "Execer" interface for one-shot queries +func (cn *conn) Exec(query string, args []driver.Value) (res driver.Result, err error) { + if cn.bad { + return nil, driver.ErrBadConn + } + defer cn.errRecover(&err) + + // Check to see if we can use the "simpleExec" interface, which is + // *much* faster than going through prepare/exec + if len(args) == 0 { + // ignore commandTag, our caller doesn't care + r, _, err := cn.simpleExec(query) + return r, err + } + + if cn.binaryParameters { + cn.sendBinaryModeQuery(query, args) + + cn.readParseResponse() + cn.readBindResponse() + cn.readPortalDescribeResponse() + cn.postExecuteWorkaround() + res, _, err = cn.readExecuteResponse("Execute") + return res, err + } + // Use the unnamed statement to defer planning until bind + // time, or else value-based selectivity estimates cannot be + // used. + st := cn.prepareTo(query, "") + r, err := st.Exec(args) + if err != nil { + panic(err) + } + return r, err +} + +func (cn *conn) send(m *writeBuf) { + _, err := cn.c.Write(m.wrap()) + if err != nil { + panic(err) + } +} + +func (cn *conn) sendStartupPacket(m *writeBuf) error { + _, err := cn.c.Write((m.wrap())[1:]) + return err +} + +// Send a message of type typ to the server on the other end of cn. The +// message should have no payload. This method does not use the scratch +// buffer. +func (cn *conn) sendSimpleMessage(typ byte) (err error) { + _, err = cn.c.Write([]byte{typ, '\x00', '\x00', '\x00', '\x04'}) + return err +} + +// saveMessage memorizes a message and its buffer in the conn struct. +// recvMessage will then return these values on the next call to it. This +// method is useful in cases where you have to see what the next message is +// going to be (e.g. to see whether it's an error or not) but you can't handle +// the message yourself. +func (cn *conn) saveMessage(typ byte, buf *readBuf) { + if cn.saveMessageType != 0 { + cn.bad = true + errorf("unexpected saveMessageType %d", cn.saveMessageType) + } + cn.saveMessageType = typ + cn.saveMessageBuffer = *buf +} + +// recvMessage receives any message from the backend, or returns an error if +// a problem occurred while reading the message. +func (cn *conn) recvMessage(r *readBuf) (byte, error) { + // workaround for a QueryRow bug, see exec + if cn.saveMessageType != 0 { + t := cn.saveMessageType + *r = cn.saveMessageBuffer + cn.saveMessageType = 0 + cn.saveMessageBuffer = nil + return t, nil + } + + x := cn.scratch[:5] + _, err := io.ReadFull(cn.buf, x) + if err != nil { + return 0, err + } + + // read the type and length of the message that follows + t := x[0] + n := int(binary.BigEndian.Uint32(x[1:])) - 4 + var y []byte + if n <= len(cn.scratch) { + y = cn.scratch[:n] + } else { + y = make([]byte, n) + } + _, err = io.ReadFull(cn.buf, y) + if err != nil { + return 0, err + } + *r = y + return t, nil +} + +// recv receives a message from the backend, but if an error happened while +// reading the message or the received message was an ErrorResponse, it panics. +// NoticeResponses are ignored. This function should generally be used only +// during the startup sequence. +func (cn *conn) recv() (t byte, r *readBuf) { + for { + var err error + r = &readBuf{} + t, err = cn.recvMessage(r) + if err != nil { + panic(err) + } + switch t { + case 'E': + panic(parseError(r)) + case 'N': + // ignore + default: + return + } + } +} + +// recv1Buf is exactly equivalent to recv1, except it uses a buffer supplied by +// the caller to avoid an allocation. +func (cn *conn) recv1Buf(r *readBuf) byte { + for { + t, err := cn.recvMessage(r) + if err != nil { + panic(err) + } + + switch t { + case 'A', 'N': + // ignore + case 'S': + cn.processParameterStatus(r) + default: + return t + } + } +} + +// recv1 receives a message from the backend, panicking if an error occurs +// while attempting to read it. All asynchronous messages are ignored, with +// the exception of ErrorResponse. +func (cn *conn) recv1() (t byte, r *readBuf) { + r = &readBuf{} + t = cn.recv1Buf(r) + return t, r +} + +func (cn *conn) ssl(o values) error { + upgrade, err := ssl(o) + if err != nil { + return err + } + + if upgrade == nil { + // Nothing to do + return nil + } + + w := cn.writeBuf(0) + w.int32(80877103) + if err = cn.sendStartupPacket(w); err != nil { + return err + } + + b := cn.scratch[:1] + _, err = io.ReadFull(cn.c, b) + if err != nil { + return err + } + + if b[0] != 'S' { + return ErrSSLNotSupported + } + + cn.c, err = upgrade(cn.c) + return err +} + +// isDriverSetting returns true iff a setting is purely for configuring the +// driver's options and should not be sent to the server in the connection +// startup packet. +func isDriverSetting(key string) bool { + switch key { + case "host", "port": + return true + case "password": + return true + case "sslmode", "sslcert", "sslkey", "sslrootcert": + return true + case "fallback_application_name": + return true + case "connect_timeout": + return true + case "disable_prepared_binary_result": + return true + case "binary_parameters": + return true + + default: + return false + } +} + +func (cn *conn) startup(o values) { + w := cn.writeBuf(0) + w.int32(196608) + // Send the backend the name of the database we want to connect to, and the + // user we want to connect as. Additionally, we send over any run-time + // parameters potentially included in the connection string. If the server + // doesn't recognize any of them, it will reply with an error. + for k, v := range o { + if isDriverSetting(k) { + // skip options which can't be run-time parameters + continue + } + // The protocol requires us to supply the database name as "database" + // instead of "dbname". + if k == "dbname" { + k = "database" + } + w.string(k) + w.string(v) + } + w.string("") + if err := cn.sendStartupPacket(w); err != nil { + panic(err) + } + + for { + t, r := cn.recv() + switch t { + case 'K': + cn.processBackendKeyData(r) + case 'S': + cn.processParameterStatus(r) + case 'R': + cn.auth(r, o) + case 'Z': + cn.processReadyForQuery(r) + return + default: + errorf("unknown response for startup: %q", t) + } + } +} + +func (cn *conn) auth(r *readBuf, o values) { + switch code := r.int32(); code { + case 0: + // OK + case 3: + w := cn.writeBuf('p') + w.string(o["password"]) + cn.send(w) + + t, r := cn.recv() + if t != 'R' { + errorf("unexpected password response: %q", t) + } + + if r.int32() != 0 { + errorf("unexpected authentication response: %q", t) + } + case 5: + s := string(r.next(4)) + w := cn.writeBuf('p') + w.string("md5" + md5s(md5s(o["password"]+o["user"])+s)) + cn.send(w) + + t, r := cn.recv() + if t != 'R' { + errorf("unexpected password response: %q", t) + } + + if r.int32() != 0 { + errorf("unexpected authentication response: %q", t) + } + case 10: + sc := scram.NewClient(sha256.New, o["user"], o["password"]) + sc.Step(nil) + if sc.Err() != nil { + errorf("SCRAM-SHA-256 error: %s", sc.Err().Error()) + } + scOut := sc.Out() + + w := cn.writeBuf('p') + w.string("SCRAM-SHA-256") + w.int32(len(scOut)) + w.bytes(scOut) + cn.send(w) + + t, r := cn.recv() + if t != 'R' { + errorf("unexpected password response: %q", t) + } + + if r.int32() != 11 { + errorf("unexpected authentication response: %q", t) + } + + nextStep := r.next(len(*r)) + sc.Step(nextStep) + if sc.Err() != nil { + errorf("SCRAM-SHA-256 error: %s", sc.Err().Error()) + } + + scOut = sc.Out() + w = cn.writeBuf('p') + w.bytes(scOut) + cn.send(w) + + t, r = cn.recv() + if t != 'R' { + errorf("unexpected password response: %q", t) + } + + if r.int32() != 12 { + errorf("unexpected authentication response: %q", t) + } + + nextStep = r.next(len(*r)) + sc.Step(nextStep) + if sc.Err() != nil { + errorf("SCRAM-SHA-256 error: %s", sc.Err().Error()) + } + + default: + errorf("unknown authentication response: %d", code) + } +} + +type format int + +const formatText format = 0 +const formatBinary format = 1 + +// One result-column format code with the value 1 (i.e. all binary). +var colFmtDataAllBinary = []byte{0, 1, 0, 1} + +// No result-column format codes (i.e. all text). +var colFmtDataAllText = []byte{0, 0} + +type stmt struct { + cn *conn + name string + rowsHeader + colFmtData []byte + paramTyps []oid.Oid + closed bool +} + +func (st *stmt) Close() (err error) { + if st.closed { + return nil + } + if st.cn.bad { + return driver.ErrBadConn + } + defer st.cn.errRecover(&err) + + w := st.cn.writeBuf('C') + w.byte('S') + w.string(st.name) + st.cn.send(w) + + st.cn.send(st.cn.writeBuf('S')) + + t, _ := st.cn.recv1() + if t != '3' { + st.cn.bad = true + errorf("unexpected close response: %q", t) + } + st.closed = true + + t, r := st.cn.recv1() + if t != 'Z' { + st.cn.bad = true + errorf("expected ready for query, but got: %q", t) + } + st.cn.processReadyForQuery(r) + + return nil +} + +func (st *stmt) Query(v []driver.Value) (r driver.Rows, err error) { + if st.cn.bad { + return nil, driver.ErrBadConn + } + defer st.cn.errRecover(&err) + + st.exec(v) + return &rows{ + cn: st.cn, + rowsHeader: st.rowsHeader, + }, nil +} + +func (st *stmt) Exec(v []driver.Value) (res driver.Result, err error) { + if st.cn.bad { + return nil, driver.ErrBadConn + } + defer st.cn.errRecover(&err) + + st.exec(v) + res, _, err = st.cn.readExecuteResponse("simple query") + return res, err +} + +func (st *stmt) exec(v []driver.Value) { + if len(v) >= 65536 { + errorf("got %d parameters but PostgreSQL only supports 65535 parameters", len(v)) + } + if len(v) != len(st.paramTyps) { + errorf("got %d parameters but the statement requires %d", len(v), len(st.paramTyps)) + } + + cn := st.cn + w := cn.writeBuf('B') + w.byte(0) // unnamed portal + w.string(st.name) + + if cn.binaryParameters { + cn.sendBinaryParameters(w, v) + } else { + w.int16(0) + w.int16(len(v)) + for i, x := range v { + if x == nil { + w.int32(-1) + } else { + b := encode(&cn.parameterStatus, x, st.paramTyps[i]) + w.int32(len(b)) + w.bytes(b) + } + } + } + w.bytes(st.colFmtData) + + w.next('E') + w.byte(0) + w.int32(0) + + w.next('S') + cn.send(w) + + cn.readBindResponse() + cn.postExecuteWorkaround() + +} + +func (st *stmt) NumInput() int { + return len(st.paramTyps) +} + +// parseComplete parses the "command tag" from a CommandComplete message, and +// returns the number of rows affected (if applicable) and a string +// identifying only the command that was executed, e.g. "ALTER TABLE". If the +// command tag could not be parsed, parseComplete panics. +func (cn *conn) parseComplete(commandTag string) (driver.Result, string) { + commandsWithAffectedRows := []string{ + "SELECT ", + // INSERT is handled below + "UPDATE ", + "DELETE ", + "FETCH ", + "MOVE ", + "COPY ", + } + + var affectedRows *string + for _, tag := range commandsWithAffectedRows { + if strings.HasPrefix(commandTag, tag) { + t := commandTag[len(tag):] + affectedRows = &t + commandTag = tag[:len(tag)-1] + break + } + } + // INSERT also includes the oid of the inserted row in its command tag. + // Oids in user tables are deprecated, and the oid is only returned when + // exactly one row is inserted, so it's unlikely to be of value to any + // real-world application and we can ignore it. + if affectedRows == nil && strings.HasPrefix(commandTag, "INSERT ") { + parts := strings.Split(commandTag, " ") + if len(parts) != 3 { + cn.bad = true + errorf("unexpected INSERT command tag %s", commandTag) + } + affectedRows = &parts[len(parts)-1] + commandTag = "INSERT" + } + // There should be no affected rows attached to the tag, just return it + if affectedRows == nil { + return driver.RowsAffected(0), commandTag + } + n, err := strconv.ParseInt(*affectedRows, 10, 64) + if err != nil { + cn.bad = true + errorf("could not parse commandTag: %s", err) + } + return driver.RowsAffected(n), commandTag +} + +type rowsHeader struct { + colNames []string + colTyps []fieldDesc + colFmts []format +} + +type rows struct { + cn *conn + finish func() + rowsHeader + done bool + rb readBuf + result driver.Result + tag string + + next *rowsHeader +} + +func (rs *rows) Close() error { + if finish := rs.finish; finish != nil { + defer finish() + } + // no need to look at cn.bad as Next() will + for { + err := rs.Next(nil) + switch err { + case nil: + case io.EOF: + // rs.Next can return io.EOF on both 'Z' (ready for query) and 'T' (row + // description, used with HasNextResultSet). We need to fetch messages until + // we hit a 'Z', which is done by waiting for done to be set. + if rs.done { + return nil + } + default: + return err + } + } +} + +func (rs *rows) Columns() []string { + return rs.colNames +} + +func (rs *rows) Result() driver.Result { + if rs.result == nil { + return emptyRows + } + return rs.result +} + +func (rs *rows) Tag() string { + return rs.tag +} + +func (rs *rows) Next(dest []driver.Value) (err error) { + if rs.done { + return io.EOF + } + + conn := rs.cn + if conn.bad { + return driver.ErrBadConn + } + defer conn.errRecover(&err) + + for { + t := conn.recv1Buf(&rs.rb) + switch t { + case 'E': + err = parseError(&rs.rb) + case 'C', 'I': + if t == 'C' { + rs.result, rs.tag = conn.parseComplete(rs.rb.string()) + } + continue + case 'Z': + conn.processReadyForQuery(&rs.rb) + rs.done = true + if err != nil { + return err + } + return io.EOF + case 'D': + n := rs.rb.int16() + if err != nil { + conn.bad = true + errorf("unexpected DataRow after error %s", err) + } + if n < len(dest) { + dest = dest[:n] + } + for i := range dest { + l := rs.rb.int32() + if l == -1 { + dest[i] = nil + continue + } + dest[i] = decode(&conn.parameterStatus, rs.rb.next(l), rs.colTyps[i].OID, rs.colFmts[i]) + } + return + case 'T': + next := parsePortalRowDescribe(&rs.rb) + rs.next = &next + return io.EOF + default: + errorf("unexpected message after execute: %q", t) + } + } +} + +func (rs *rows) HasNextResultSet() bool { + hasNext := rs.next != nil && !rs.done + return hasNext +} + +func (rs *rows) NextResultSet() error { + if rs.next == nil { + return io.EOF + } + rs.rowsHeader = *rs.next + rs.next = nil + return nil +} + +// QuoteIdentifier quotes an "identifier" (e.g. a table or a column name) to be +// used as part of an SQL statement. For example: +// +// tblname := "my_table" +// data := "my_data" +// quoted := pq.QuoteIdentifier(tblname) +// err := db.Exec(fmt.Sprintf("INSERT INTO %s VALUES ($1)", quoted), data) +// +// Any double quotes in name will be escaped. The quoted identifier will be +// case sensitive when used in a query. If the input string contains a zero +// byte, the result will be truncated immediately before it. +func QuoteIdentifier(name string) string { + end := strings.IndexRune(name, 0) + if end > -1 { + name = name[:end] + } + return `"` + strings.Replace(name, `"`, `""`, -1) + `"` +} + +func md5s(s string) string { + h := md5.New() + h.Write([]byte(s)) + return fmt.Sprintf("%x", h.Sum(nil)) +} + +func (cn *conn) sendBinaryParameters(b *writeBuf, args []driver.Value) { + // Do one pass over the parameters to see if we're going to send any of + // them over in binary. If we are, create a paramFormats array at the + // same time. + var paramFormats []int + for i, x := range args { + _, ok := x.([]byte) + if ok { + if paramFormats == nil { + paramFormats = make([]int, len(args)) + } + paramFormats[i] = 1 + } + } + if paramFormats == nil { + b.int16(0) + } else { + b.int16(len(paramFormats)) + for _, x := range paramFormats { + b.int16(x) + } + } + + b.int16(len(args)) + for _, x := range args { + if x == nil { + b.int32(-1) + } else { + datum := binaryEncode(&cn.parameterStatus, x) + b.int32(len(datum)) + b.bytes(datum) + } + } +} + +func (cn *conn) sendBinaryModeQuery(query string, args []driver.Value) { + if len(args) >= 65536 { + errorf("got %d parameters but PostgreSQL only supports 65535 parameters", len(args)) + } + + b := cn.writeBuf('P') + b.byte(0) // unnamed statement + b.string(query) + b.int16(0) + + b.next('B') + b.int16(0) // unnamed portal and statement + cn.sendBinaryParameters(b, args) + b.bytes(colFmtDataAllText) + + b.next('D') + b.byte('P') + b.byte(0) // unnamed portal + + b.next('E') + b.byte(0) + b.int32(0) + + b.next('S') + cn.send(b) +} + +func (cn *conn) processParameterStatus(r *readBuf) { + var err error + + param := r.string() + switch param { + case "server_version": + var major1 int + var major2 int + var minor int + _, err = fmt.Sscanf(r.string(), "%d.%d.%d", &major1, &major2, &minor) + if err == nil { + cn.parameterStatus.serverVersion = major1*10000 + major2*100 + minor + } + + case "TimeZone": + cn.parameterStatus.currentLocation, err = time.LoadLocation(r.string()) + if err != nil { + cn.parameterStatus.currentLocation = nil + } + + default: + // ignore + } +} + +func (cn *conn) processReadyForQuery(r *readBuf) { + cn.txnStatus = transactionStatus(r.byte()) +} + +func (cn *conn) readReadyForQuery() { + t, r := cn.recv1() + switch t { + case 'Z': + cn.processReadyForQuery(r) + return + default: + cn.bad = true + errorf("unexpected message %q; expected ReadyForQuery", t) + } +} + +func (cn *conn) processBackendKeyData(r *readBuf) { + cn.processID = r.int32() + cn.secretKey = r.int32() +} + +func (cn *conn) readParseResponse() { + t, r := cn.recv1() + switch t { + case '1': + return + case 'E': + err := parseError(r) + cn.readReadyForQuery() + panic(err) + default: + cn.bad = true + errorf("unexpected Parse response %q", t) + } +} + +func (cn *conn) readStatementDescribeResponse() (paramTyps []oid.Oid, colNames []string, colTyps []fieldDesc) { + for { + t, r := cn.recv1() + switch t { + case 't': + nparams := r.int16() + paramTyps = make([]oid.Oid, nparams) + for i := range paramTyps { + paramTyps[i] = r.oid() + } + case 'n': + return paramTyps, nil, nil + case 'T': + colNames, colTyps = parseStatementRowDescribe(r) + return paramTyps, colNames, colTyps + case 'E': + err := parseError(r) + cn.readReadyForQuery() + panic(err) + default: + cn.bad = true + errorf("unexpected Describe statement response %q", t) + } + } +} + +func (cn *conn) readPortalDescribeResponse() rowsHeader { + t, r := cn.recv1() + switch t { + case 'T': + return parsePortalRowDescribe(r) + case 'n': + return rowsHeader{} + case 'E': + err := parseError(r) + cn.readReadyForQuery() + panic(err) + default: + cn.bad = true + errorf("unexpected Describe response %q", t) + } + panic("not reached") +} + +func (cn *conn) readBindResponse() { + t, r := cn.recv1() + switch t { + case '2': + return + case 'E': + err := parseError(r) + cn.readReadyForQuery() + panic(err) + default: + cn.bad = true + errorf("unexpected Bind response %q", t) + } +} + +func (cn *conn) postExecuteWorkaround() { + // Work around a bug in sql.DB.QueryRow: in Go 1.2 and earlier it ignores + // any errors from rows.Next, which masks errors that happened during the + // execution of the query. To avoid the problem in common cases, we wait + // here for one more message from the database. If it's not an error the + // query will likely succeed (or perhaps has already, if it's a + // CommandComplete), so we push the message into the conn struct; recv1 + // will return it as the next message for rows.Next or rows.Close. + // However, if it's an error, we wait until ReadyForQuery and then return + // the error to our caller. + for { + t, r := cn.recv1() + switch t { + case 'E': + err := parseError(r) + cn.readReadyForQuery() + panic(err) + case 'C', 'D', 'I': + // the query didn't fail, but we can't process this message + cn.saveMessage(t, r) + return + default: + cn.bad = true + errorf("unexpected message during extended query execution: %q", t) + } + } +} + +// Only for Exec(), since we ignore the returned data +func (cn *conn) readExecuteResponse(protocolState string) (res driver.Result, commandTag string, err error) { + for { + t, r := cn.recv1() + switch t { + case 'C': + if err != nil { + cn.bad = true + errorf("unexpected CommandComplete after error %s", err) + } + res, commandTag = cn.parseComplete(r.string()) + case 'Z': + cn.processReadyForQuery(r) + if res == nil && err == nil { + err = errUnexpectedReady + } + return res, commandTag, err + case 'E': + err = parseError(r) + case 'T', 'D', 'I': + if err != nil { + cn.bad = true + errorf("unexpected %q after error %s", t, err) + } + if t == 'I' { + res = emptyRows + } + // ignore any results + default: + cn.bad = true + errorf("unknown %s response: %q", protocolState, t) + } + } +} + +func parseStatementRowDescribe(r *readBuf) (colNames []string, colTyps []fieldDesc) { + n := r.int16() + colNames = make([]string, n) + colTyps = make([]fieldDesc, n) + for i := range colNames { + colNames[i] = r.string() + r.next(6) + colTyps[i].OID = r.oid() + colTyps[i].Len = r.int16() + colTyps[i].Mod = r.int32() + // format code not known when describing a statement; always 0 + r.next(2) + } + return +} + +func parsePortalRowDescribe(r *readBuf) rowsHeader { + n := r.int16() + colNames := make([]string, n) + colFmts := make([]format, n) + colTyps := make([]fieldDesc, n) + for i := range colNames { + colNames[i] = r.string() + r.next(6) + colTyps[i].OID = r.oid() + colTyps[i].Len = r.int16() + colTyps[i].Mod = r.int32() + colFmts[i] = format(r.int16()) + } + return rowsHeader{ + colNames: colNames, + colFmts: colFmts, + colTyps: colTyps, + } +} + +// parseEnviron tries to mimic some of libpq's environment handling +// +// To ease testing, it does not directly reference os.Environ, but is +// designed to accept its output. +// +// Environment-set connection information is intended to have a higher +// precedence than a library default but lower than any explicitly +// passed information (such as in the URL or connection string). +func parseEnviron(env []string) (out map[string]string) { + out = make(map[string]string) + + for _, v := range env { + parts := strings.SplitN(v, "=", 2) + + accrue := func(keyname string) { + out[keyname] = parts[1] + } + unsupported := func() { + panic(fmt.Sprintf("setting %v not supported", parts[0])) + } + + // The order of these is the same as is seen in the + // PostgreSQL 9.1 manual. Unsupported but well-defined + // keys cause a panic; these should be unset prior to + // execution. Options which pq expects to be set to a + // certain value are allowed, but must be set to that + // value if present (they can, of course, be absent). + switch parts[0] { + case "PGHOST": + accrue("host") + case "PGHOSTADDR": + unsupported() + case "PGPORT": + accrue("port") + case "PGDATABASE": + accrue("dbname") + case "PGUSER": + accrue("user") + case "PGPASSWORD": + accrue("password") + case "PGSERVICE", "PGSERVICEFILE", "PGREALM": + unsupported() + case "PGOPTIONS": + accrue("options") + case "PGAPPNAME": + accrue("application_name") + case "PGSSLMODE": + accrue("sslmode") + case "PGSSLCERT": + accrue("sslcert") + case "PGSSLKEY": + accrue("sslkey") + case "PGSSLROOTCERT": + accrue("sslrootcert") + case "PGREQUIRESSL", "PGSSLCRL": + unsupported() + case "PGREQUIREPEER": + unsupported() + case "PGKRBSRVNAME", "PGGSSLIB": + unsupported() + case "PGCONNECT_TIMEOUT": + accrue("connect_timeout") + case "PGCLIENTENCODING": + accrue("client_encoding") + case "PGDATESTYLE": + accrue("datestyle") + case "PGTZ": + accrue("timezone") + case "PGGEQO": + accrue("geqo") + case "PGSYSCONFDIR", "PGLOCALEDIR": + unsupported() + } + } + + return out +} + +// isUTF8 returns whether name is a fuzzy variation of the string "UTF-8". +func isUTF8(name string) bool { + // Recognize all sorts of silly things as "UTF-8", like Postgres does + s := strings.Map(alnumLowerASCII, name) + return s == "utf8" || s == "unicode" +} + +func alnumLowerASCII(ch rune) rune { + if 'A' <= ch && ch <= 'Z' { + return ch + ('a' - 'A') + } + if 'a' <= ch && ch <= 'z' || '0' <= ch && ch <= '9' { + return ch + } + return -1 // discard +} diff --git a/vendor/github.com/lib/pq/conn_go18.go b/vendor/github.com/lib/pq/conn_go18.go new file mode 100644 index 0000000000..0fdd06a617 --- /dev/null +++ b/vendor/github.com/lib/pq/conn_go18.go @@ -0,0 +1,149 @@ +package pq + +import ( + "context" + "database/sql" + "database/sql/driver" + "fmt" + "io" + "io/ioutil" + "time" +) + +// Implement the "QueryerContext" interface +func (cn *conn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) { + list := make([]driver.Value, len(args)) + for i, nv := range args { + list[i] = nv.Value + } + finish := cn.watchCancel(ctx) + r, err := cn.query(query, list) + if err != nil { + if finish != nil { + finish() + } + return nil, err + } + r.finish = finish + return r, nil +} + +// Implement the "ExecerContext" interface +func (cn *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) { + list := make([]driver.Value, len(args)) + for i, nv := range args { + list[i] = nv.Value + } + + if finish := cn.watchCancel(ctx); finish != nil { + defer finish() + } + + return cn.Exec(query, list) +} + +// Implement the "ConnBeginTx" interface +func (cn *conn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) { + var mode string + + switch sql.IsolationLevel(opts.Isolation) { + case sql.LevelDefault: + // Don't touch mode: use the server's default + case sql.LevelReadUncommitted: + mode = " ISOLATION LEVEL READ UNCOMMITTED" + case sql.LevelReadCommitted: + mode = " ISOLATION LEVEL READ COMMITTED" + case sql.LevelRepeatableRead: + mode = " ISOLATION LEVEL REPEATABLE READ" + case sql.LevelSerializable: + mode = " ISOLATION LEVEL SERIALIZABLE" + default: + return nil, fmt.Errorf("pq: isolation level not supported: %d", opts.Isolation) + } + + if opts.ReadOnly { + mode += " READ ONLY" + } else { + mode += " READ WRITE" + } + + tx, err := cn.begin(mode) + if err != nil { + return nil, err + } + cn.txnFinish = cn.watchCancel(ctx) + return tx, nil +} + +func (cn *conn) Ping(ctx context.Context) error { + if finish := cn.watchCancel(ctx); finish != nil { + defer finish() + } + rows, err := cn.simpleQuery("SELECT 'lib/pq ping test';") + if err != nil { + return driver.ErrBadConn // https://golang.org/pkg/database/sql/driver/#Pinger + } + rows.Close() + return nil +} + +func (cn *conn) watchCancel(ctx context.Context) func() { + if done := ctx.Done(); done != nil { + finished := make(chan struct{}) + go func() { + select { + case <-done: + // At this point the function level context is canceled, + // so it must not be used for the additional network + // request to cancel the query. + // Create a new context to pass into the dial. + ctxCancel, cancel := context.WithTimeout(context.Background(), time.Second*10) + defer cancel() + + _ = cn.cancel(ctxCancel) + finished <- struct{}{} + case <-finished: + } + }() + return func() { + select { + case <-finished: + case finished <- struct{}{}: + } + } + } + return nil +} + +func (cn *conn) cancel(ctx context.Context) error { + c, err := dial(ctx, cn.dialer, cn.opts) + if err != nil { + return err + } + defer c.Close() + + { + can := conn{ + c: c, + } + err = can.ssl(cn.opts) + if err != nil { + return err + } + + w := can.writeBuf(0) + w.int32(80877102) // cancel request code + w.int32(cn.processID) + w.int32(cn.secretKey) + + if err := can.sendStartupPacket(w); err != nil { + return err + } + } + + // Read until EOF to ensure that the server received the cancel. + { + _, err := io.Copy(ioutil.Discard, c) + return err + } +} diff --git a/vendor/github.com/lib/pq/connector.go b/vendor/github.com/lib/pq/connector.go new file mode 100644 index 0000000000..2f8ced6737 --- /dev/null +++ b/vendor/github.com/lib/pq/connector.go @@ -0,0 +1,110 @@ +package pq + +import ( + "context" + "database/sql/driver" + "errors" + "fmt" + "os" + "strings" +) + +// Connector represents a fixed configuration for the pq driver with a given +// name. Connector satisfies the database/sql/driver Connector interface and +// can be used to create any number of DB Conn's via the database/sql OpenDB +// function. +// +// See https://golang.org/pkg/database/sql/driver/#Connector. +// See https://golang.org/pkg/database/sql/#OpenDB. +type Connector struct { + opts values + dialer Dialer +} + +// Connect returns a connection to the database using the fixed configuration +// of this Connector. Context is not used. +func (c *Connector) Connect(ctx context.Context) (driver.Conn, error) { + return c.open(ctx) +} + +// Driver returnst the underlying driver of this Connector. +func (c *Connector) Driver() driver.Driver { + return &Driver{} +} + +// NewConnector returns a connector for the pq driver in a fixed configuration +// with the given dsn. The returned connector can be used to create any number +// of equivalent Conn's. The returned connector is intended to be used with +// database/sql.OpenDB. +// +// See https://golang.org/pkg/database/sql/driver/#Connector. +// See https://golang.org/pkg/database/sql/#OpenDB. +func NewConnector(dsn string) (*Connector, error) { + var err error + o := make(values) + + // A number of defaults are applied here, in this order: + // + // * Very low precedence defaults applied in every situation + // * Environment variables + // * Explicitly passed connection information + o["host"] = "localhost" + o["port"] = "5432" + // N.B.: Extra float digits should be set to 3, but that breaks + // Postgres 8.4 and older, where the max is 2. + o["extra_float_digits"] = "2" + for k, v := range parseEnviron(os.Environ()) { + o[k] = v + } + + if strings.HasPrefix(dsn, "postgres://") || strings.HasPrefix(dsn, "postgresql://") { + dsn, err = ParseURL(dsn) + if err != nil { + return nil, err + } + } + + if err := parseOpts(dsn, o); err != nil { + return nil, err + } + + // Use the "fallback" application name if necessary + if fallback, ok := o["fallback_application_name"]; ok { + if _, ok := o["application_name"]; !ok { + o["application_name"] = fallback + } + } + + // We can't work with any client_encoding other than UTF-8 currently. + // However, we have historically allowed the user to set it to UTF-8 + // explicitly, and there's no reason to break such programs, so allow that. + // Note that the "options" setting could also set client_encoding, but + // parsing its value is not worth it. Instead, we always explicitly send + // client_encoding as a separate run-time parameter, which should override + // anything set in options. + if enc, ok := o["client_encoding"]; ok && !isUTF8(enc) { + return nil, errors.New("client_encoding must be absent or 'UTF8'") + } + o["client_encoding"] = "UTF8" + // DateStyle needs a similar treatment. + if datestyle, ok := o["datestyle"]; ok { + if datestyle != "ISO, MDY" { + return nil, fmt.Errorf("setting datestyle must be absent or %v; got %v", "ISO, MDY", datestyle) + } + } else { + o["datestyle"] = "ISO, MDY" + } + + // If a user is not provided by any other means, the last + // resort is to use the current operating system provided user + // name. + if _, ok := o["user"]; !ok { + u, err := userCurrent() + if err != nil { + return nil, err + } + o["user"] = u + } + + return &Connector{opts: o, dialer: defaultDialer{}}, nil +} diff --git a/vendor/github.com/lib/pq/copy.go b/vendor/github.com/lib/pq/copy.go new file mode 100644 index 0000000000..345c2398f6 --- /dev/null +++ b/vendor/github.com/lib/pq/copy.go @@ -0,0 +1,282 @@ +package pq + +import ( + "database/sql/driver" + "encoding/binary" + "errors" + "fmt" + "sync" +) + +var ( + errCopyInClosed = errors.New("pq: copyin statement has already been closed") + errBinaryCopyNotSupported = errors.New("pq: only text format supported for COPY") + errCopyToNotSupported = errors.New("pq: COPY TO is not supported") + errCopyNotSupportedOutsideTxn = errors.New("pq: COPY is only allowed inside a transaction") + errCopyInProgress = errors.New("pq: COPY in progress") +) + +// CopyIn creates a COPY FROM statement which can be prepared with +// Tx.Prepare(). The target table should be visible in search_path. +func CopyIn(table string, columns ...string) string { + stmt := "COPY " + QuoteIdentifier(table) + " (" + for i, col := range columns { + if i != 0 { + stmt += ", " + } + stmt += QuoteIdentifier(col) + } + stmt += ") FROM STDIN" + return stmt +} + +// CopyInSchema creates a COPY FROM statement which can be prepared with +// Tx.Prepare(). +func CopyInSchema(schema, table string, columns ...string) string { + stmt := "COPY " + QuoteIdentifier(schema) + "." + QuoteIdentifier(table) + " (" + for i, col := range columns { + if i != 0 { + stmt += ", " + } + stmt += QuoteIdentifier(col) + } + stmt += ") FROM STDIN" + return stmt +} + +type copyin struct { + cn *conn + buffer []byte + rowData chan []byte + done chan bool + + closed bool + + sync.Mutex // guards err + err error +} + +const ciBufferSize = 64 * 1024 + +// flush buffer before the buffer is filled up and needs reallocation +const ciBufferFlushSize = 63 * 1024 + +func (cn *conn) prepareCopyIn(q string) (_ driver.Stmt, err error) { + if !cn.isInTransaction() { + return nil, errCopyNotSupportedOutsideTxn + } + + ci := ©in{ + cn: cn, + buffer: make([]byte, 0, ciBufferSize), + rowData: make(chan []byte), + done: make(chan bool, 1), + } + // add CopyData identifier + 4 bytes for message length + ci.buffer = append(ci.buffer, 'd', 0, 0, 0, 0) + + b := cn.writeBuf('Q') + b.string(q) + cn.send(b) + +awaitCopyInResponse: + for { + t, r := cn.recv1() + switch t { + case 'G': + if r.byte() != 0 { + err = errBinaryCopyNotSupported + break awaitCopyInResponse + } + go ci.resploop() + return ci, nil + case 'H': + err = errCopyToNotSupported + break awaitCopyInResponse + case 'E': + err = parseError(r) + case 'Z': + if err == nil { + ci.setBad() + errorf("unexpected ReadyForQuery in response to COPY") + } + cn.processReadyForQuery(r) + return nil, err + default: + ci.setBad() + errorf("unknown response for copy query: %q", t) + } + } + + // something went wrong, abort COPY before we return + b = cn.writeBuf('f') + b.string(err.Error()) + cn.send(b) + + for { + t, r := cn.recv1() + switch t { + case 'c', 'C', 'E': + case 'Z': + // correctly aborted, we're done + cn.processReadyForQuery(r) + return nil, err + default: + ci.setBad() + errorf("unknown response for CopyFail: %q", t) + } + } +} + +func (ci *copyin) flush(buf []byte) { + // set message length (without message identifier) + binary.BigEndian.PutUint32(buf[1:], uint32(len(buf)-1)) + + _, err := ci.cn.c.Write(buf) + if err != nil { + panic(err) + } +} + +func (ci *copyin) resploop() { + for { + var r readBuf + t, err := ci.cn.recvMessage(&r) + if err != nil { + ci.setBad() + ci.setError(err) + ci.done <- true + return + } + switch t { + case 'C': + // complete + case 'N': + // NoticeResponse + case 'Z': + ci.cn.processReadyForQuery(&r) + ci.done <- true + return + case 'E': + err := parseError(&r) + ci.setError(err) + default: + ci.setBad() + ci.setError(fmt.Errorf("unknown response during CopyIn: %q", t)) + ci.done <- true + return + } + } +} + +func (ci *copyin) setBad() { + ci.Lock() + ci.cn.bad = true + ci.Unlock() +} + +func (ci *copyin) isBad() bool { + ci.Lock() + b := ci.cn.bad + ci.Unlock() + return b +} + +func (ci *copyin) isErrorSet() bool { + ci.Lock() + isSet := (ci.err != nil) + ci.Unlock() + return isSet +} + +// setError() sets ci.err if one has not been set already. Caller must not be +// holding ci.Mutex. +func (ci *copyin) setError(err error) { + ci.Lock() + if ci.err == nil { + ci.err = err + } + ci.Unlock() +} + +func (ci *copyin) NumInput() int { + return -1 +} + +func (ci *copyin) Query(v []driver.Value) (r driver.Rows, err error) { + return nil, ErrNotSupported +} + +// Exec inserts values into the COPY stream. The insert is asynchronous +// and Exec can return errors from previous Exec calls to the same +// COPY stmt. +// +// You need to call Exec(nil) to sync the COPY stream and to get any +// errors from pending data, since Stmt.Close() doesn't return errors +// to the user. +func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) { + if ci.closed { + return nil, errCopyInClosed + } + + if ci.isBad() { + return nil, driver.ErrBadConn + } + defer ci.cn.errRecover(&err) + + if ci.isErrorSet() { + return nil, ci.err + } + + if len(v) == 0 { + return nil, ci.Close() + } + + numValues := len(v) + for i, value := range v { + ci.buffer = appendEncodedText(&ci.cn.parameterStatus, ci.buffer, value) + if i < numValues-1 { + ci.buffer = append(ci.buffer, '\t') + } + } + + ci.buffer = append(ci.buffer, '\n') + + if len(ci.buffer) > ciBufferFlushSize { + ci.flush(ci.buffer) + // reset buffer, keep bytes for message identifier and length + ci.buffer = ci.buffer[:5] + } + + return driver.RowsAffected(0), nil +} + +func (ci *copyin) Close() (err error) { + if ci.closed { // Don't do anything, we're already closed + return nil + } + ci.closed = true + + if ci.isBad() { + return driver.ErrBadConn + } + defer ci.cn.errRecover(&err) + + if len(ci.buffer) > 0 { + ci.flush(ci.buffer) + } + // Avoid touching the scratch buffer as resploop could be using it. + err = ci.cn.sendSimpleMessage('c') + if err != nil { + return err + } + + <-ci.done + ci.cn.inCopy = false + + if ci.isErrorSet() { + err = ci.err + return err + } + return nil +} diff --git a/vendor/github.com/lib/pq/doc.go b/vendor/github.com/lib/pq/doc.go new file mode 100644 index 0000000000..2a60054e2e --- /dev/null +++ b/vendor/github.com/lib/pq/doc.go @@ -0,0 +1,245 @@ +/* +Package pq is a pure Go Postgres driver for the database/sql package. + +In most cases clients will use the database/sql package instead of +using this package directly. For example: + + import ( + "database/sql" + + _ "github.com/lib/pq" + ) + + func main() { + connStr := "user=pqgotest dbname=pqgotest sslmode=verify-full" + db, err := sql.Open("postgres", connStr) + if err != nil { + log.Fatal(err) + } + + age := 21 + rows, err := db.Query("SELECT name FROM users WHERE age = $1", age) + … + } + +You can also connect to a database using a URL. For example: + + connStr := "postgres://pqgotest:password@localhost/pqgotest?sslmode=verify-full" + db, err := sql.Open("postgres", connStr) + + +Connection String Parameters + + +Similarly to libpq, when establishing a connection using pq you are expected to +supply a connection string containing zero or more parameters. +A subset of the connection parameters supported by libpq are also supported by pq. +Additionally, pq also lets you specify run-time parameters (such as search_path or work_mem) +directly in the connection string. This is different from libpq, which does not allow +run-time parameters in the connection string, instead requiring you to supply +them in the options parameter. + +For compatibility with libpq, the following special connection parameters are +supported: + + * dbname - The name of the database to connect to + * user - The user to sign in as + * password - The user's password + * host - The host to connect to. Values that start with / are for unix + domain sockets. (default is localhost) + * port - The port to bind to. (default is 5432) + * sslmode - Whether or not to use SSL (default is require, this is not + the default for libpq) + * fallback_application_name - An application_name to fall back to if one isn't provided. + * connect_timeout - Maximum wait for connection, in seconds. Zero or + not specified means wait indefinitely. + * sslcert - Cert file location. The file must contain PEM encoded data. + * sslkey - Key file location. The file must contain PEM encoded data. + * sslrootcert - The location of the root certificate file. The file + must contain PEM encoded data. + +Valid values for sslmode are: + + * disable - No SSL + * require - Always SSL (skip verification) + * verify-ca - Always SSL (verify that the certificate presented by the + server was signed by a trusted CA) + * verify-full - Always SSL (verify that the certification presented by + the server was signed by a trusted CA and the server host name + matches the one in the certificate) + +See http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING +for more information about connection string parameters. + +Use single quotes for values that contain whitespace: + + "user=pqgotest password='with spaces'" + +A backslash will escape the next character in values: + + "user=space\ man password='it\'s valid'" + +Note that the connection parameter client_encoding (which sets the +text encoding for the connection) may be set but must be "UTF8", +matching with the same rules as Postgres. It is an error to provide +any other value. + +In addition to the parameters listed above, any run-time parameter that can be +set at backend start time can be set in the connection string. For more +information, see +http://www.postgresql.org/docs/current/static/runtime-config.html. + +Most environment variables as specified at http://www.postgresql.org/docs/current/static/libpq-envars.html +supported by libpq are also supported by pq. If any of the environment +variables not supported by pq are set, pq will panic during connection +establishment. Environment variables have a lower precedence than explicitly +provided connection parameters. + +The pgpass mechanism as described in http://www.postgresql.org/docs/current/static/libpq-pgpass.html +is supported, but on Windows PGPASSFILE must be specified explicitly. + + +Queries + + +database/sql does not dictate any specific format for parameter +markers in query strings, and pq uses the Postgres-native ordinal markers, +as shown above. The same marker can be reused for the same parameter: + + rows, err := db.Query(`SELECT name FROM users WHERE favorite_fruit = $1 + OR age BETWEEN $2 AND $2 + 3`, "orange", 64) + +pq does not support the LastInsertId() method of the Result type in database/sql. +To return the identifier of an INSERT (or UPDATE or DELETE), use the Postgres +RETURNING clause with a standard Query or QueryRow call: + + var userid int + err := db.QueryRow(`INSERT INTO users(name, favorite_fruit, age) + VALUES('beatrice', 'starfruit', 93) RETURNING id`).Scan(&userid) + +For more details on RETURNING, see the Postgres documentation: + + http://www.postgresql.org/docs/current/static/sql-insert.html + http://www.postgresql.org/docs/current/static/sql-update.html + http://www.postgresql.org/docs/current/static/sql-delete.html + +For additional instructions on querying see the documentation for the database/sql package. + + +Data Types + + +Parameters pass through driver.DefaultParameterConverter before they are handled +by this package. When the binary_parameters connection option is enabled, +[]byte values are sent directly to the backend as data in binary format. + +This package returns the following types for values from the PostgreSQL backend: + + - integer types smallint, integer, and bigint are returned as int64 + - floating-point types real and double precision are returned as float64 + - character types char, varchar, and text are returned as string + - temporal types date, time, timetz, timestamp, and timestamptz are + returned as time.Time + - the boolean type is returned as bool + - the bytea type is returned as []byte + +All other types are returned directly from the backend as []byte values in text format. + + +Errors + + +pq may return errors of type *pq.Error which can be interrogated for error details: + + if err, ok := err.(*pq.Error); ok { + fmt.Println("pq error:", err.Code.Name()) + } + +See the pq.Error type for details. + + +Bulk imports + +You can perform bulk imports by preparing a statement returned by pq.CopyIn (or +pq.CopyInSchema) in an explicit transaction (sql.Tx). The returned statement +handle can then be repeatedly "executed" to copy data into the target table. +After all data has been processed you should call Exec() once with no arguments +to flush all buffered data. Any call to Exec() might return an error which +should be handled appropriately, but because of the internal buffering an error +returned by Exec() might not be related to the data passed in the call that +failed. + +CopyIn uses COPY FROM internally. It is not possible to COPY outside of an +explicit transaction in pq. + +Usage example: + + txn, err := db.Begin() + if err != nil { + log.Fatal(err) + } + + stmt, err := txn.Prepare(pq.CopyIn("users", "name", "age")) + if err != nil { + log.Fatal(err) + } + + for _, user := range users { + _, err = stmt.Exec(user.Name, int64(user.Age)) + if err != nil { + log.Fatal(err) + } + } + + _, err = stmt.Exec() + if err != nil { + log.Fatal(err) + } + + err = stmt.Close() + if err != nil { + log.Fatal(err) + } + + err = txn.Commit() + if err != nil { + log.Fatal(err) + } + + +Notifications + + +PostgreSQL supports a simple publish/subscribe model over database +connections. See http://www.postgresql.org/docs/current/static/sql-notify.html +for more information about the general mechanism. + +To start listening for notifications, you first have to open a new connection +to the database by calling NewListener. This connection can not be used for +anything other than LISTEN / NOTIFY. Calling Listen will open a "notification +channel"; once a notification channel is open, a notification generated on that +channel will effect a send on the Listener.Notify channel. A notification +channel will remain open until Unlisten is called, though connection loss might +result in some notifications being lost. To solve this problem, Listener sends +a nil pointer over the Notify channel any time the connection is re-established +following a connection loss. The application can get information about the +state of the underlying connection by setting an event callback in the call to +NewListener. + +A single Listener can safely be used from concurrent goroutines, which means +that there is often no need to create more than one Listener in your +application. However, a Listener is always connected to a single database, so +you will need to create a new Listener instance for every database you want to +receive notifications in. + +The channel name in both Listen and Unlisten is case sensitive, and can contain +any characters legal in an identifier (see +http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS +for more information). Note that the channel name will be truncated to 63 +bytes by the PostgreSQL server. + +You can find a complete, working example of Listener usage at +https://godoc.org/github.com/lib/pq/example/listen. + +*/ +package pq diff --git a/vendor/github.com/lib/pq/encode.go b/vendor/github.com/lib/pq/encode.go new file mode 100644 index 0000000000..a6902fae61 --- /dev/null +++ b/vendor/github.com/lib/pq/encode.go @@ -0,0 +1,602 @@ +package pq + +import ( + "bytes" + "database/sql/driver" + "encoding/binary" + "encoding/hex" + "errors" + "fmt" + "math" + "strconv" + "strings" + "sync" + "time" + + "github.com/lib/pq/oid" +) + +func binaryEncode(parameterStatus *parameterStatus, x interface{}) []byte { + switch v := x.(type) { + case []byte: + return v + default: + return encode(parameterStatus, x, oid.T_unknown) + } +} + +func encode(parameterStatus *parameterStatus, x interface{}, pgtypOid oid.Oid) []byte { + switch v := x.(type) { + case int64: + return strconv.AppendInt(nil, v, 10) + case float64: + return strconv.AppendFloat(nil, v, 'f', -1, 64) + case []byte: + if pgtypOid == oid.T_bytea { + return encodeBytea(parameterStatus.serverVersion, v) + } + + return v + case string: + if pgtypOid == oid.T_bytea { + return encodeBytea(parameterStatus.serverVersion, []byte(v)) + } + + return []byte(v) + case bool: + return strconv.AppendBool(nil, v) + case time.Time: + return formatTs(v) + + default: + errorf("encode: unknown type for %T", v) + } + + panic("not reached") +} + +func decode(parameterStatus *parameterStatus, s []byte, typ oid.Oid, f format) interface{} { + switch f { + case formatBinary: + return binaryDecode(parameterStatus, s, typ) + case formatText: + return textDecode(parameterStatus, s, typ) + default: + panic("not reached") + } +} + +func binaryDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} { + switch typ { + case oid.T_bytea: + return s + case oid.T_int8: + return int64(binary.BigEndian.Uint64(s)) + case oid.T_int4: + return int64(int32(binary.BigEndian.Uint32(s))) + case oid.T_int2: + return int64(int16(binary.BigEndian.Uint16(s))) + case oid.T_uuid: + b, err := decodeUUIDBinary(s) + if err != nil { + panic(err) + } + return b + + default: + errorf("don't know how to decode binary parameter of type %d", uint32(typ)) + } + + panic("not reached") +} + +func textDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} { + switch typ { + case oid.T_char, oid.T_varchar, oid.T_text: + return string(s) + case oid.T_bytea: + b, err := parseBytea(s) + if err != nil { + errorf("%s", err) + } + return b + case oid.T_timestamptz: + return parseTs(parameterStatus.currentLocation, string(s)) + case oid.T_timestamp, oid.T_date: + return parseTs(nil, string(s)) + case oid.T_time: + return mustParse("15:04:05", typ, s) + case oid.T_timetz: + return mustParse("15:04:05-07", typ, s) + case oid.T_bool: + return s[0] == 't' + case oid.T_int8, oid.T_int4, oid.T_int2: + i, err := strconv.ParseInt(string(s), 10, 64) + if err != nil { + errorf("%s", err) + } + return i + case oid.T_float4, oid.T_float8: + // We always use 64 bit parsing, regardless of whether the input text is for + // a float4 or float8, because clients expect float64s for all float datatypes + // and returning a 32-bit parsed float64 produces lossy results. + f, err := strconv.ParseFloat(string(s), 64) + if err != nil { + errorf("%s", err) + } + return f + } + + return s +} + +// appendEncodedText encodes item in text format as required by COPY +// and appends to buf +func appendEncodedText(parameterStatus *parameterStatus, buf []byte, x interface{}) []byte { + switch v := x.(type) { + case int64: + return strconv.AppendInt(buf, v, 10) + case float64: + return strconv.AppendFloat(buf, v, 'f', -1, 64) + case []byte: + encodedBytea := encodeBytea(parameterStatus.serverVersion, v) + return appendEscapedText(buf, string(encodedBytea)) + case string: + return appendEscapedText(buf, v) + case bool: + return strconv.AppendBool(buf, v) + case time.Time: + return append(buf, formatTs(v)...) + case nil: + return append(buf, "\\N"...) + default: + errorf("encode: unknown type for %T", v) + } + + panic("not reached") +} + +func appendEscapedText(buf []byte, text string) []byte { + escapeNeeded := false + startPos := 0 + var c byte + + // check if we need to escape + for i := 0; i < len(text); i++ { + c = text[i] + if c == '\\' || c == '\n' || c == '\r' || c == '\t' { + escapeNeeded = true + startPos = i + break + } + } + if !escapeNeeded { + return append(buf, text...) + } + + // copy till first char to escape, iterate the rest + result := append(buf, text[:startPos]...) + for i := startPos; i < len(text); i++ { + c = text[i] + switch c { + case '\\': + result = append(result, '\\', '\\') + case '\n': + result = append(result, '\\', 'n') + case '\r': + result = append(result, '\\', 'r') + case '\t': + result = append(result, '\\', 't') + default: + result = append(result, c) + } + } + return result +} + +func mustParse(f string, typ oid.Oid, s []byte) time.Time { + str := string(s) + + // check for a 30-minute-offset timezone + if (typ == oid.T_timestamptz || typ == oid.T_timetz) && + str[len(str)-3] == ':' { + f += ":00" + } + t, err := time.Parse(f, str) + if err != nil { + errorf("decode: %s", err) + } + return t +} + +var errInvalidTimestamp = errors.New("invalid timestamp") + +type timestampParser struct { + err error +} + +func (p *timestampParser) expect(str string, char byte, pos int) { + if p.err != nil { + return + } + if pos+1 > len(str) { + p.err = errInvalidTimestamp + return + } + if c := str[pos]; c != char && p.err == nil { + p.err = fmt.Errorf("expected '%v' at position %v; got '%v'", char, pos, c) + } +} + +func (p *timestampParser) mustAtoi(str string, begin int, end int) int { + if p.err != nil { + return 0 + } + if begin < 0 || end < 0 || begin > end || end > len(str) { + p.err = errInvalidTimestamp + return 0 + } + result, err := strconv.Atoi(str[begin:end]) + if err != nil { + if p.err == nil { + p.err = fmt.Errorf("expected number; got '%v'", str) + } + return 0 + } + return result +} + +// The location cache caches the time zones typically used by the client. +type locationCache struct { + cache map[int]*time.Location + lock sync.Mutex +} + +// All connections share the same list of timezones. Benchmarking shows that +// about 5% speed could be gained by putting the cache in the connection and +// losing the mutex, at the cost of a small amount of memory and a somewhat +// significant increase in code complexity. +var globalLocationCache = newLocationCache() + +func newLocationCache() *locationCache { + return &locationCache{cache: make(map[int]*time.Location)} +} + +// Returns the cached timezone for the specified offset, creating and caching +// it if necessary. +func (c *locationCache) getLocation(offset int) *time.Location { + c.lock.Lock() + defer c.lock.Unlock() + + location, ok := c.cache[offset] + if !ok { + location = time.FixedZone("", offset) + c.cache[offset] = location + } + + return location +} + +var infinityTsEnabled = false +var infinityTsNegative time.Time +var infinityTsPositive time.Time + +const ( + infinityTsEnabledAlready = "pq: infinity timestamp enabled already" + infinityTsNegativeMustBeSmaller = "pq: infinity timestamp: negative value must be smaller (before) than positive" +) + +// EnableInfinityTs controls the handling of Postgres' "-infinity" and +// "infinity" "timestamp"s. +// +// If EnableInfinityTs is not called, "-infinity" and "infinity" will return +// []byte("-infinity") and []byte("infinity") respectively, and potentially +// cause error "sql: Scan error on column index 0: unsupported driver -> Scan +// pair: []uint8 -> *time.Time", when scanning into a time.Time value. +// +// Once EnableInfinityTs has been called, all connections created using this +// driver will decode Postgres' "-infinity" and "infinity" for "timestamp", +// "timestamp with time zone" and "date" types to the predefined minimum and +// maximum times, respectively. When encoding time.Time values, any time which +// equals or precedes the predefined minimum time will be encoded to +// "-infinity". Any values at or past the maximum time will similarly be +// encoded to "infinity". +// +// If EnableInfinityTs is called with negative >= positive, it will panic. +// Calling EnableInfinityTs after a connection has been established results in +// undefined behavior. If EnableInfinityTs is called more than once, it will +// panic. +func EnableInfinityTs(negative time.Time, positive time.Time) { + if infinityTsEnabled { + panic(infinityTsEnabledAlready) + } + if !negative.Before(positive) { + panic(infinityTsNegativeMustBeSmaller) + } + infinityTsEnabled = true + infinityTsNegative = negative + infinityTsPositive = positive +} + +/* + * Testing might want to toggle infinityTsEnabled + */ +func disableInfinityTs() { + infinityTsEnabled = false +} + +// This is a time function specific to the Postgres default DateStyle +// setting ("ISO, MDY"), the only one we currently support. This +// accounts for the discrepancies between the parsing available with +// time.Parse and the Postgres date formatting quirks. +func parseTs(currentLocation *time.Location, str string) interface{} { + switch str { + case "-infinity": + if infinityTsEnabled { + return infinityTsNegative + } + return []byte(str) + case "infinity": + if infinityTsEnabled { + return infinityTsPositive + } + return []byte(str) + } + t, err := ParseTimestamp(currentLocation, str) + if err != nil { + panic(err) + } + return t +} + +// ParseTimestamp parses Postgres' text format. It returns a time.Time in +// currentLocation iff that time's offset agrees with the offset sent from the +// Postgres server. Otherwise, ParseTimestamp returns a time.Time with the +// fixed offset offset provided by the Postgres server. +func ParseTimestamp(currentLocation *time.Location, str string) (time.Time, error) { + p := timestampParser{} + + monSep := strings.IndexRune(str, '-') + // this is Gregorian year, not ISO Year + // In Gregorian system, the year 1 BC is followed by AD 1 + year := p.mustAtoi(str, 0, monSep) + daySep := monSep + 3 + month := p.mustAtoi(str, monSep+1, daySep) + p.expect(str, '-', daySep) + timeSep := daySep + 3 + day := p.mustAtoi(str, daySep+1, timeSep) + + minLen := monSep + len("01-01") + 1 + + isBC := strings.HasSuffix(str, " BC") + if isBC { + minLen += 3 + } + + var hour, minute, second int + if len(str) > minLen { + p.expect(str, ' ', timeSep) + minSep := timeSep + 3 + p.expect(str, ':', minSep) + hour = p.mustAtoi(str, timeSep+1, minSep) + secSep := minSep + 3 + p.expect(str, ':', secSep) + minute = p.mustAtoi(str, minSep+1, secSep) + secEnd := secSep + 3 + second = p.mustAtoi(str, secSep+1, secEnd) + } + remainderIdx := monSep + len("01-01 00:00:00") + 1 + // Three optional (but ordered) sections follow: the + // fractional seconds, the time zone offset, and the BC + // designation. We set them up here and adjust the other + // offsets if the preceding sections exist. + + nanoSec := 0 + tzOff := 0 + + if remainderIdx < len(str) && str[remainderIdx] == '.' { + fracStart := remainderIdx + 1 + fracOff := strings.IndexAny(str[fracStart:], "-+ ") + if fracOff < 0 { + fracOff = len(str) - fracStart + } + fracSec := p.mustAtoi(str, fracStart, fracStart+fracOff) + nanoSec = fracSec * (1000000000 / int(math.Pow(10, float64(fracOff)))) + + remainderIdx += fracOff + 1 + } + if tzStart := remainderIdx; tzStart < len(str) && (str[tzStart] == '-' || str[tzStart] == '+') { + // time zone separator is always '-' or '+' (UTC is +00) + var tzSign int + switch c := str[tzStart]; c { + case '-': + tzSign = -1 + case '+': + tzSign = +1 + default: + return time.Time{}, fmt.Errorf("expected '-' or '+' at position %v; got %v", tzStart, c) + } + tzHours := p.mustAtoi(str, tzStart+1, tzStart+3) + remainderIdx += 3 + var tzMin, tzSec int + if remainderIdx < len(str) && str[remainderIdx] == ':' { + tzMin = p.mustAtoi(str, remainderIdx+1, remainderIdx+3) + remainderIdx += 3 + } + if remainderIdx < len(str) && str[remainderIdx] == ':' { + tzSec = p.mustAtoi(str, remainderIdx+1, remainderIdx+3) + remainderIdx += 3 + } + tzOff = tzSign * ((tzHours * 60 * 60) + (tzMin * 60) + tzSec) + } + var isoYear int + + if isBC { + isoYear = 1 - year + remainderIdx += 3 + } else { + isoYear = year + } + if remainderIdx < len(str) { + return time.Time{}, fmt.Errorf("expected end of input, got %v", str[remainderIdx:]) + } + t := time.Date(isoYear, time.Month(month), day, + hour, minute, second, nanoSec, + globalLocationCache.getLocation(tzOff)) + + if currentLocation != nil { + // Set the location of the returned Time based on the session's + // TimeZone value, but only if the local time zone database agrees with + // the remote database on the offset. + lt := t.In(currentLocation) + _, newOff := lt.Zone() + if newOff == tzOff { + t = lt + } + } + + return t, p.err +} + +// formatTs formats t into a format postgres understands. +func formatTs(t time.Time) []byte { + if infinityTsEnabled { + // t <= -infinity : ! (t > -infinity) + if !t.After(infinityTsNegative) { + return []byte("-infinity") + } + // t >= infinity : ! (!t < infinity) + if !t.Before(infinityTsPositive) { + return []byte("infinity") + } + } + return FormatTimestamp(t) +} + +// FormatTimestamp formats t into Postgres' text format for timestamps. +func FormatTimestamp(t time.Time) []byte { + // Need to send dates before 0001 A.D. with " BC" suffix, instead of the + // minus sign preferred by Go. + // Beware, "0000" in ISO is "1 BC", "-0001" is "2 BC" and so on + bc := false + if t.Year() <= 0 { + // flip year sign, and add 1, e.g: "0" will be "1", and "-10" will be "11" + t = t.AddDate((-t.Year())*2+1, 0, 0) + bc = true + } + b := []byte(t.Format("2006-01-02 15:04:05.999999999Z07:00")) + + _, offset := t.Zone() + offset = offset % 60 + if offset != 0 { + // RFC3339Nano already printed the minus sign + if offset < 0 { + offset = -offset + } + + b = append(b, ':') + if offset < 10 { + b = append(b, '0') + } + b = strconv.AppendInt(b, int64(offset), 10) + } + + if bc { + b = append(b, " BC"...) + } + return b +} + +// Parse a bytea value received from the server. Both "hex" and the legacy +// "escape" format are supported. +func parseBytea(s []byte) (result []byte, err error) { + if len(s) >= 2 && bytes.Equal(s[:2], []byte("\\x")) { + // bytea_output = hex + s = s[2:] // trim off leading "\\x" + result = make([]byte, hex.DecodedLen(len(s))) + _, err := hex.Decode(result, s) + if err != nil { + return nil, err + } + } else { + // bytea_output = escape + for len(s) > 0 { + if s[0] == '\\' { + // escaped '\\' + if len(s) >= 2 && s[1] == '\\' { + result = append(result, '\\') + s = s[2:] + continue + } + + // '\\' followed by an octal number + if len(s) < 4 { + return nil, fmt.Errorf("invalid bytea sequence %v", s) + } + r, err := strconv.ParseInt(string(s[1:4]), 8, 9) + if err != nil { + return nil, fmt.Errorf("could not parse bytea value: %s", err.Error()) + } + result = append(result, byte(r)) + s = s[4:] + } else { + // We hit an unescaped, raw byte. Try to read in as many as + // possible in one go. + i := bytes.IndexByte(s, '\\') + if i == -1 { + result = append(result, s...) + break + } + result = append(result, s[:i]...) + s = s[i:] + } + } + } + + return result, nil +} + +func encodeBytea(serverVersion int, v []byte) (result []byte) { + if serverVersion >= 90000 { + // Use the hex format if we know that the server supports it + result = make([]byte, 2+hex.EncodedLen(len(v))) + result[0] = '\\' + result[1] = 'x' + hex.Encode(result[2:], v) + } else { + // .. or resort to "escape" + for _, b := range v { + if b == '\\' { + result = append(result, '\\', '\\') + } else if b < 0x20 || b > 0x7e { + result = append(result, []byte(fmt.Sprintf("\\%03o", b))...) + } else { + result = append(result, b) + } + } + } + + return result +} + +// NullTime represents a time.Time that may be null. NullTime implements the +// sql.Scanner interface so it can be used as a scan destination, similar to +// sql.NullString. +type NullTime struct { + Time time.Time + Valid bool // Valid is true if Time is not NULL +} + +// Scan implements the Scanner interface. +func (nt *NullTime) Scan(value interface{}) error { + nt.Time, nt.Valid = value.(time.Time) + return nil +} + +// Value implements the driver Valuer interface. +func (nt NullTime) Value() (driver.Value, error) { + if !nt.Valid { + return nil, nil + } + return nt.Time, nil +} diff --git a/vendor/github.com/lib/pq/error.go b/vendor/github.com/lib/pq/error.go new file mode 100644 index 0000000000..96aae29c65 --- /dev/null +++ b/vendor/github.com/lib/pq/error.go @@ -0,0 +1,515 @@ +package pq + +import ( + "database/sql/driver" + "fmt" + "io" + "net" + "runtime" +) + +// Error severities +const ( + Efatal = "FATAL" + Epanic = "PANIC" + Ewarning = "WARNING" + Enotice = "NOTICE" + Edebug = "DEBUG" + Einfo = "INFO" + Elog = "LOG" +) + +// Error represents an error communicating with the server. +// +// See http://www.postgresql.org/docs/current/static/protocol-error-fields.html for details of the fields +type Error struct { + Severity string + Code ErrorCode + Message string + Detail string + Hint string + Position string + InternalPosition string + InternalQuery string + Where string + Schema string + Table string + Column string + DataTypeName string + Constraint string + File string + Line string + Routine string +} + +// ErrorCode is a five-character error code. +type ErrorCode string + +// Name returns a more human friendly rendering of the error code, namely the +// "condition name". +// +// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for +// details. +func (ec ErrorCode) Name() string { + return errorCodeNames[ec] +} + +// ErrorClass is only the class part of an error code. +type ErrorClass string + +// Name returns the condition name of an error class. It is equivalent to the +// condition name of the "standard" error code (i.e. the one having the last +// three characters "000"). +func (ec ErrorClass) Name() string { + return errorCodeNames[ErrorCode(ec+"000")] +} + +// Class returns the error class, e.g. "28". +// +// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for +// details. +func (ec ErrorCode) Class() ErrorClass { + return ErrorClass(ec[0:2]) +} + +// errorCodeNames is a mapping between the five-character error codes and the +// human readable "condition names". It is derived from the list at +// http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html +var errorCodeNames = map[ErrorCode]string{ + // Class 00 - Successful Completion + "00000": "successful_completion", + // Class 01 - Warning + "01000": "warning", + "0100C": "dynamic_result_sets_returned", + "01008": "implicit_zero_bit_padding", + "01003": "null_value_eliminated_in_set_function", + "01007": "privilege_not_granted", + "01006": "privilege_not_revoked", + "01004": "string_data_right_truncation", + "01P01": "deprecated_feature", + // Class 02 - No Data (this is also a warning class per the SQL standard) + "02000": "no_data", + "02001": "no_additional_dynamic_result_sets_returned", + // Class 03 - SQL Statement Not Yet Complete + "03000": "sql_statement_not_yet_complete", + // Class 08 - Connection Exception + "08000": "connection_exception", + "08003": "connection_does_not_exist", + "08006": "connection_failure", + "08001": "sqlclient_unable_to_establish_sqlconnection", + "08004": "sqlserver_rejected_establishment_of_sqlconnection", + "08007": "transaction_resolution_unknown", + "08P01": "protocol_violation", + // Class 09 - Triggered Action Exception + "09000": "triggered_action_exception", + // Class 0A - Feature Not Supported + "0A000": "feature_not_supported", + // Class 0B - Invalid Transaction Initiation + "0B000": "invalid_transaction_initiation", + // Class 0F - Locator Exception + "0F000": "locator_exception", + "0F001": "invalid_locator_specification", + // Class 0L - Invalid Grantor + "0L000": "invalid_grantor", + "0LP01": "invalid_grant_operation", + // Class 0P - Invalid Role Specification + "0P000": "invalid_role_specification", + // Class 0Z - Diagnostics Exception + "0Z000": "diagnostics_exception", + "0Z002": "stacked_diagnostics_accessed_without_active_handler", + // Class 20 - Case Not Found + "20000": "case_not_found", + // Class 21 - Cardinality Violation + "21000": "cardinality_violation", + // Class 22 - Data Exception + "22000": "data_exception", + "2202E": "array_subscript_error", + "22021": "character_not_in_repertoire", + "22008": "datetime_field_overflow", + "22012": "division_by_zero", + "22005": "error_in_assignment", + "2200B": "escape_character_conflict", + "22022": "indicator_overflow", + "22015": "interval_field_overflow", + "2201E": "invalid_argument_for_logarithm", + "22014": "invalid_argument_for_ntile_function", + "22016": "invalid_argument_for_nth_value_function", + "2201F": "invalid_argument_for_power_function", + "2201G": "invalid_argument_for_width_bucket_function", + "22018": "invalid_character_value_for_cast", + "22007": "invalid_datetime_format", + "22019": "invalid_escape_character", + "2200D": "invalid_escape_octet", + "22025": "invalid_escape_sequence", + "22P06": "nonstandard_use_of_escape_character", + "22010": "invalid_indicator_parameter_value", + "22023": "invalid_parameter_value", + "2201B": "invalid_regular_expression", + "2201W": "invalid_row_count_in_limit_clause", + "2201X": "invalid_row_count_in_result_offset_clause", + "22009": "invalid_time_zone_displacement_value", + "2200C": "invalid_use_of_escape_character", + "2200G": "most_specific_type_mismatch", + "22004": "null_value_not_allowed", + "22002": "null_value_no_indicator_parameter", + "22003": "numeric_value_out_of_range", + "2200H": "sequence_generator_limit_exceeded", + "22026": "string_data_length_mismatch", + "22001": "string_data_right_truncation", + "22011": "substring_error", + "22027": "trim_error", + "22024": "unterminated_c_string", + "2200F": "zero_length_character_string", + "22P01": "floating_point_exception", + "22P02": "invalid_text_representation", + "22P03": "invalid_binary_representation", + "22P04": "bad_copy_file_format", + "22P05": "untranslatable_character", + "2200L": "not_an_xml_document", + "2200M": "invalid_xml_document", + "2200N": "invalid_xml_content", + "2200S": "invalid_xml_comment", + "2200T": "invalid_xml_processing_instruction", + // Class 23 - Integrity Constraint Violation + "23000": "integrity_constraint_violation", + "23001": "restrict_violation", + "23502": "not_null_violation", + "23503": "foreign_key_violation", + "23505": "unique_violation", + "23514": "check_violation", + "23P01": "exclusion_violation", + // Class 24 - Invalid Cursor State + "24000": "invalid_cursor_state", + // Class 25 - Invalid Transaction State + "25000": "invalid_transaction_state", + "25001": "active_sql_transaction", + "25002": "branch_transaction_already_active", + "25008": "held_cursor_requires_same_isolation_level", + "25003": "inappropriate_access_mode_for_branch_transaction", + "25004": "inappropriate_isolation_level_for_branch_transaction", + "25005": "no_active_sql_transaction_for_branch_transaction", + "25006": "read_only_sql_transaction", + "25007": "schema_and_data_statement_mixing_not_supported", + "25P01": "no_active_sql_transaction", + "25P02": "in_failed_sql_transaction", + // Class 26 - Invalid SQL Statement Name + "26000": "invalid_sql_statement_name", + // Class 27 - Triggered Data Change Violation + "27000": "triggered_data_change_violation", + // Class 28 - Invalid Authorization Specification + "28000": "invalid_authorization_specification", + "28P01": "invalid_password", + // Class 2B - Dependent Privilege Descriptors Still Exist + "2B000": "dependent_privilege_descriptors_still_exist", + "2BP01": "dependent_objects_still_exist", + // Class 2D - Invalid Transaction Termination + "2D000": "invalid_transaction_termination", + // Class 2F - SQL Routine Exception + "2F000": "sql_routine_exception", + "2F005": "function_executed_no_return_statement", + "2F002": "modifying_sql_data_not_permitted", + "2F003": "prohibited_sql_statement_attempted", + "2F004": "reading_sql_data_not_permitted", + // Class 34 - Invalid Cursor Name + "34000": "invalid_cursor_name", + // Class 38 - External Routine Exception + "38000": "external_routine_exception", + "38001": "containing_sql_not_permitted", + "38002": "modifying_sql_data_not_permitted", + "38003": "prohibited_sql_statement_attempted", + "38004": "reading_sql_data_not_permitted", + // Class 39 - External Routine Invocation Exception + "39000": "external_routine_invocation_exception", + "39001": "invalid_sqlstate_returned", + "39004": "null_value_not_allowed", + "39P01": "trigger_protocol_violated", + "39P02": "srf_protocol_violated", + // Class 3B - Savepoint Exception + "3B000": "savepoint_exception", + "3B001": "invalid_savepoint_specification", + // Class 3D - Invalid Catalog Name + "3D000": "invalid_catalog_name", + // Class 3F - Invalid Schema Name + "3F000": "invalid_schema_name", + // Class 40 - Transaction Rollback + "40000": "transaction_rollback", + "40002": "transaction_integrity_constraint_violation", + "40001": "serialization_failure", + "40003": "statement_completion_unknown", + "40P01": "deadlock_detected", + // Class 42 - Syntax Error or Access Rule Violation + "42000": "syntax_error_or_access_rule_violation", + "42601": "syntax_error", + "42501": "insufficient_privilege", + "42846": "cannot_coerce", + "42803": "grouping_error", + "42P20": "windowing_error", + "42P19": "invalid_recursion", + "42830": "invalid_foreign_key", + "42602": "invalid_name", + "42622": "name_too_long", + "42939": "reserved_name", + "42804": "datatype_mismatch", + "42P18": "indeterminate_datatype", + "42P21": "collation_mismatch", + "42P22": "indeterminate_collation", + "42809": "wrong_object_type", + "42703": "undefined_column", + "42883": "undefined_function", + "42P01": "undefined_table", + "42P02": "undefined_parameter", + "42704": "undefined_object", + "42701": "duplicate_column", + "42P03": "duplicate_cursor", + "42P04": "duplicate_database", + "42723": "duplicate_function", + "42P05": "duplicate_prepared_statement", + "42P06": "duplicate_schema", + "42P07": "duplicate_table", + "42712": "duplicate_alias", + "42710": "duplicate_object", + "42702": "ambiguous_column", + "42725": "ambiguous_function", + "42P08": "ambiguous_parameter", + "42P09": "ambiguous_alias", + "42P10": "invalid_column_reference", + "42611": "invalid_column_definition", + "42P11": "invalid_cursor_definition", + "42P12": "invalid_database_definition", + "42P13": "invalid_function_definition", + "42P14": "invalid_prepared_statement_definition", + "42P15": "invalid_schema_definition", + "42P16": "invalid_table_definition", + "42P17": "invalid_object_definition", + // Class 44 - WITH CHECK OPTION Violation + "44000": "with_check_option_violation", + // Class 53 - Insufficient Resources + "53000": "insufficient_resources", + "53100": "disk_full", + "53200": "out_of_memory", + "53300": "too_many_connections", + "53400": "configuration_limit_exceeded", + // Class 54 - Program Limit Exceeded + "54000": "program_limit_exceeded", + "54001": "statement_too_complex", + "54011": "too_many_columns", + "54023": "too_many_arguments", + // Class 55 - Object Not In Prerequisite State + "55000": "object_not_in_prerequisite_state", + "55006": "object_in_use", + "55P02": "cant_change_runtime_param", + "55P03": "lock_not_available", + // Class 57 - Operator Intervention + "57000": "operator_intervention", + "57014": "query_canceled", + "57P01": "admin_shutdown", + "57P02": "crash_shutdown", + "57P03": "cannot_connect_now", + "57P04": "database_dropped", + // Class 58 - System Error (errors external to PostgreSQL itself) + "58000": "system_error", + "58030": "io_error", + "58P01": "undefined_file", + "58P02": "duplicate_file", + // Class F0 - Configuration File Error + "F0000": "config_file_error", + "F0001": "lock_file_exists", + // Class HV - Foreign Data Wrapper Error (SQL/MED) + "HV000": "fdw_error", + "HV005": "fdw_column_name_not_found", + "HV002": "fdw_dynamic_parameter_value_needed", + "HV010": "fdw_function_sequence_error", + "HV021": "fdw_inconsistent_descriptor_information", + "HV024": "fdw_invalid_attribute_value", + "HV007": "fdw_invalid_column_name", + "HV008": "fdw_invalid_column_number", + "HV004": "fdw_invalid_data_type", + "HV006": "fdw_invalid_data_type_descriptors", + "HV091": "fdw_invalid_descriptor_field_identifier", + "HV00B": "fdw_invalid_handle", + "HV00C": "fdw_invalid_option_index", + "HV00D": "fdw_invalid_option_name", + "HV090": "fdw_invalid_string_length_or_buffer_length", + "HV00A": "fdw_invalid_string_format", + "HV009": "fdw_invalid_use_of_null_pointer", + "HV014": "fdw_too_many_handles", + "HV001": "fdw_out_of_memory", + "HV00P": "fdw_no_schemas", + "HV00J": "fdw_option_name_not_found", + "HV00K": "fdw_reply_handle", + "HV00Q": "fdw_schema_not_found", + "HV00R": "fdw_table_not_found", + "HV00L": "fdw_unable_to_create_execution", + "HV00M": "fdw_unable_to_create_reply", + "HV00N": "fdw_unable_to_establish_connection", + // Class P0 - PL/pgSQL Error + "P0000": "plpgsql_error", + "P0001": "raise_exception", + "P0002": "no_data_found", + "P0003": "too_many_rows", + // Class XX - Internal Error + "XX000": "internal_error", + "XX001": "data_corrupted", + "XX002": "index_corrupted", +} + +func parseError(r *readBuf) *Error { + err := new(Error) + for t := r.byte(); t != 0; t = r.byte() { + msg := r.string() + switch t { + case 'S': + err.Severity = msg + case 'C': + err.Code = ErrorCode(msg) + case 'M': + err.Message = msg + case 'D': + err.Detail = msg + case 'H': + err.Hint = msg + case 'P': + err.Position = msg + case 'p': + err.InternalPosition = msg + case 'q': + err.InternalQuery = msg + case 'W': + err.Where = msg + case 's': + err.Schema = msg + case 't': + err.Table = msg + case 'c': + err.Column = msg + case 'd': + err.DataTypeName = msg + case 'n': + err.Constraint = msg + case 'F': + err.File = msg + case 'L': + err.Line = msg + case 'R': + err.Routine = msg + } + } + return err +} + +// Fatal returns true if the Error Severity is fatal. +func (err *Error) Fatal() bool { + return err.Severity == Efatal +} + +// Get implements the legacy PGError interface. New code should use the fields +// of the Error struct directly. +func (err *Error) Get(k byte) (v string) { + switch k { + case 'S': + return err.Severity + case 'C': + return string(err.Code) + case 'M': + return err.Message + case 'D': + return err.Detail + case 'H': + return err.Hint + case 'P': + return err.Position + case 'p': + return err.InternalPosition + case 'q': + return err.InternalQuery + case 'W': + return err.Where + case 's': + return err.Schema + case 't': + return err.Table + case 'c': + return err.Column + case 'd': + return err.DataTypeName + case 'n': + return err.Constraint + case 'F': + return err.File + case 'L': + return err.Line + case 'R': + return err.Routine + } + return "" +} + +func (err Error) Error() string { + return "pq: " + err.Message +} + +// PGError is an interface used by previous versions of pq. It is provided +// only to support legacy code. New code should use the Error type. +type PGError interface { + Error() string + Fatal() bool + Get(k byte) (v string) +} + +func errorf(s string, args ...interface{}) { + panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...))) +} + +// TODO(ainar-g) Rename to errorf after removing panics. +func fmterrorf(s string, args ...interface{}) error { + return fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)) +} + +func errRecoverNoErrBadConn(err *error) { + e := recover() + if e == nil { + // Do nothing + return + } + var ok bool + *err, ok = e.(error) + if !ok { + *err = fmt.Errorf("pq: unexpected error: %#v", e) + } +} + +func (c *conn) errRecover(err *error) { + e := recover() + switch v := e.(type) { + case nil: + // Do nothing + case runtime.Error: + c.bad = true + panic(v) + case *Error: + if v.Fatal() { + *err = driver.ErrBadConn + } else { + *err = v + } + case *net.OpError: + c.bad = true + *err = v + case error: + if v == io.EOF || v.(error).Error() == "remote error: handshake failure" { + *err = driver.ErrBadConn + } else { + *err = v + } + + default: + c.bad = true + panic(fmt.Sprintf("unknown error: %#v", e)) + } + + // Any time we return ErrBadConn, we need to remember it since *Tx doesn't + // mark the connection bad in database/sql. + if *err == driver.ErrBadConn { + c.bad = true + } +} diff --git a/vendor/github.com/lib/pq/go.mod b/vendor/github.com/lib/pq/go.mod new file mode 100644 index 0000000000..edf0b343fd --- /dev/null +++ b/vendor/github.com/lib/pq/go.mod @@ -0,0 +1 @@ +module github.com/lib/pq diff --git a/vendor/github.com/lib/pq/notify.go b/vendor/github.com/lib/pq/notify.go new file mode 100644 index 0000000000..850bb9040c --- /dev/null +++ b/vendor/github.com/lib/pq/notify.go @@ -0,0 +1,797 @@ +package pq + +// Package pq is a pure Go Postgres driver for the database/sql package. +// This module contains support for Postgres LISTEN/NOTIFY. + +import ( + "errors" + "fmt" + "sync" + "sync/atomic" + "time" +) + +// Notification represents a single notification from the database. +type Notification struct { + // Process ID (PID) of the notifying postgres backend. + BePid int + // Name of the channel the notification was sent on. + Channel string + // Payload, or the empty string if unspecified. + Extra string +} + +func recvNotification(r *readBuf) *Notification { + bePid := r.int32() + channel := r.string() + extra := r.string() + + return &Notification{bePid, channel, extra} +} + +const ( + connStateIdle int32 = iota + connStateExpectResponse + connStateExpectReadyForQuery +) + +type message struct { + typ byte + err error +} + +var errListenerConnClosed = errors.New("pq: ListenerConn has been closed") + +// ListenerConn is a low-level interface for waiting for notifications. You +// should use Listener instead. +type ListenerConn struct { + // guards cn and err + connectionLock sync.Mutex + cn *conn + err error + + connState int32 + + // the sending goroutine will be holding this lock + senderLock sync.Mutex + + notificationChan chan<- *Notification + + replyChan chan message +} + +// NewListenerConn creates a new ListenerConn. Use NewListener instead. +func NewListenerConn(name string, notificationChan chan<- *Notification) (*ListenerConn, error) { + return newDialListenerConn(defaultDialer{}, name, notificationChan) +} + +func newDialListenerConn(d Dialer, name string, c chan<- *Notification) (*ListenerConn, error) { + cn, err := DialOpen(d, name) + if err != nil { + return nil, err + } + + l := &ListenerConn{ + cn: cn.(*conn), + notificationChan: c, + connState: connStateIdle, + replyChan: make(chan message, 2), + } + + go l.listenerConnMain() + + return l, nil +} + +// We can only allow one goroutine at a time to be running a query on the +// connection for various reasons, so the goroutine sending on the connection +// must be holding senderLock. +// +// Returns an error if an unrecoverable error has occurred and the ListenerConn +// should be abandoned. +func (l *ListenerConn) acquireSenderLock() error { + // we must acquire senderLock first to avoid deadlocks; see ExecSimpleQuery + l.senderLock.Lock() + + l.connectionLock.Lock() + err := l.err + l.connectionLock.Unlock() + if err != nil { + l.senderLock.Unlock() + return err + } + return nil +} + +func (l *ListenerConn) releaseSenderLock() { + l.senderLock.Unlock() +} + +// setState advances the protocol state to newState. Returns false if moving +// to that state from the current state is not allowed. +func (l *ListenerConn) setState(newState int32) bool { + var expectedState int32 + + switch newState { + case connStateIdle: + expectedState = connStateExpectReadyForQuery + case connStateExpectResponse: + expectedState = connStateIdle + case connStateExpectReadyForQuery: + expectedState = connStateExpectResponse + default: + panic(fmt.Sprintf("unexpected listenerConnState %d", newState)) + } + + return atomic.CompareAndSwapInt32(&l.connState, expectedState, newState) +} + +// Main logic is here: receive messages from the postgres backend, forward +// notifications and query replies and keep the internal state in sync with the +// protocol state. Returns when the connection has been lost, is about to go +// away or should be discarded because we couldn't agree on the state with the +// server backend. +func (l *ListenerConn) listenerConnLoop() (err error) { + defer errRecoverNoErrBadConn(&err) + + r := &readBuf{} + for { + t, err := l.cn.recvMessage(r) + if err != nil { + return err + } + + switch t { + case 'A': + // recvNotification copies all the data so we don't need to worry + // about the scratch buffer being overwritten. + l.notificationChan <- recvNotification(r) + + case 'T', 'D': + // only used by tests; ignore + + case 'E': + // We might receive an ErrorResponse even when not in a query; it + // is expected that the server will close the connection after + // that, but we should make sure that the error we display is the + // one from the stray ErrorResponse, not io.ErrUnexpectedEOF. + if !l.setState(connStateExpectReadyForQuery) { + return parseError(r) + } + l.replyChan <- message{t, parseError(r)} + + case 'C', 'I': + if !l.setState(connStateExpectReadyForQuery) { + // protocol out of sync + return fmt.Errorf("unexpected CommandComplete") + } + // ExecSimpleQuery doesn't need to know about this message + + case 'Z': + if !l.setState(connStateIdle) { + // protocol out of sync + return fmt.Errorf("unexpected ReadyForQuery") + } + l.replyChan <- message{t, nil} + + case 'N', 'S': + // ignore + default: + return fmt.Errorf("unexpected message %q from server in listenerConnLoop", t) + } + } +} + +// This is the main routine for the goroutine receiving on the database +// connection. Most of the main logic is in listenerConnLoop. +func (l *ListenerConn) listenerConnMain() { + err := l.listenerConnLoop() + + // listenerConnLoop terminated; we're done, but we still have to clean up. + // Make sure nobody tries to start any new queries by making sure the err + // pointer is set. It is important that we do not overwrite its value; a + // connection could be closed by either this goroutine or one sending on + // the connection -- whoever closes the connection is assumed to have the + // more meaningful error message (as the other one will probably get + // net.errClosed), so that goroutine sets the error we expose while the + // other error is discarded. If the connection is lost while two + // goroutines are operating on the socket, it probably doesn't matter which + // error we expose so we don't try to do anything more complex. + l.connectionLock.Lock() + if l.err == nil { + l.err = err + } + l.cn.Close() + l.connectionLock.Unlock() + + // There might be a query in-flight; make sure nobody's waiting for a + // response to it, since there's not going to be one. + close(l.replyChan) + + // let the listener know we're done + close(l.notificationChan) + + // this ListenerConn is done +} + +// Listen sends a LISTEN query to the server. See ExecSimpleQuery. +func (l *ListenerConn) Listen(channel string) (bool, error) { + return l.ExecSimpleQuery("LISTEN " + QuoteIdentifier(channel)) +} + +// Unlisten sends an UNLISTEN query to the server. See ExecSimpleQuery. +func (l *ListenerConn) Unlisten(channel string) (bool, error) { + return l.ExecSimpleQuery("UNLISTEN " + QuoteIdentifier(channel)) +} + +// UnlistenAll sends an `UNLISTEN *` query to the server. See ExecSimpleQuery. +func (l *ListenerConn) UnlistenAll() (bool, error) { + return l.ExecSimpleQuery("UNLISTEN *") +} + +// Ping the remote server to make sure it's alive. Non-nil error means the +// connection has failed and should be abandoned. +func (l *ListenerConn) Ping() error { + sent, err := l.ExecSimpleQuery("") + if !sent { + return err + } + if err != nil { + // shouldn't happen + panic(err) + } + return nil +} + +// Attempt to send a query on the connection. Returns an error if sending the +// query failed, and the caller should initiate closure of this connection. +// The caller must be holding senderLock (see acquireSenderLock and +// releaseSenderLock). +func (l *ListenerConn) sendSimpleQuery(q string) (err error) { + defer errRecoverNoErrBadConn(&err) + + // must set connection state before sending the query + if !l.setState(connStateExpectResponse) { + panic("two queries running at the same time") + } + + // Can't use l.cn.writeBuf here because it uses the scratch buffer which + // might get overwritten by listenerConnLoop. + b := &writeBuf{ + buf: []byte("Q\x00\x00\x00\x00"), + pos: 1, + } + b.string(q) + l.cn.send(b) + + return nil +} + +// ExecSimpleQuery executes a "simple query" (i.e. one with no bindable +// parameters) on the connection. The possible return values are: +// 1) "executed" is true; the query was executed to completion on the +// database server. If the query failed, err will be set to the error +// returned by the database, otherwise err will be nil. +// 2) If "executed" is false, the query could not be executed on the remote +// server. err will be non-nil. +// +// After a call to ExecSimpleQuery has returned an executed=false value, the +// connection has either been closed or will be closed shortly thereafter, and +// all subsequently executed queries will return an error. +func (l *ListenerConn) ExecSimpleQuery(q string) (executed bool, err error) { + if err = l.acquireSenderLock(); err != nil { + return false, err + } + defer l.releaseSenderLock() + + err = l.sendSimpleQuery(q) + if err != nil { + // We can't know what state the protocol is in, so we need to abandon + // this connection. + l.connectionLock.Lock() + // Set the error pointer if it hasn't been set already; see + // listenerConnMain. + if l.err == nil { + l.err = err + } + l.connectionLock.Unlock() + l.cn.c.Close() + return false, err + } + + // now we just wait for a reply.. + for { + m, ok := <-l.replyChan + if !ok { + // We lost the connection to server, don't bother waiting for a + // a response. err should have been set already. + l.connectionLock.Lock() + err := l.err + l.connectionLock.Unlock() + return false, err + } + switch m.typ { + case 'Z': + // sanity check + if m.err != nil { + panic("m.err != nil") + } + // done; err might or might not be set + return true, err + + case 'E': + // sanity check + if m.err == nil { + panic("m.err == nil") + } + // server responded with an error; ReadyForQuery to follow + err = m.err + + default: + return false, fmt.Errorf("unknown response for simple query: %q", m.typ) + } + } +} + +// Close closes the connection. +func (l *ListenerConn) Close() error { + l.connectionLock.Lock() + if l.err != nil { + l.connectionLock.Unlock() + return errListenerConnClosed + } + l.err = errListenerConnClosed + l.connectionLock.Unlock() + // We can't send anything on the connection without holding senderLock. + // Simply close the net.Conn to wake up everyone operating on it. + return l.cn.c.Close() +} + +// Err returns the reason the connection was closed. It is not safe to call +// this function until l.Notify has been closed. +func (l *ListenerConn) Err() error { + return l.err +} + +var errListenerClosed = errors.New("pq: Listener has been closed") + +// ErrChannelAlreadyOpen is returned from Listen when a channel is already +// open. +var ErrChannelAlreadyOpen = errors.New("pq: channel is already open") + +// ErrChannelNotOpen is returned from Unlisten when a channel is not open. +var ErrChannelNotOpen = errors.New("pq: channel is not open") + +// ListenerEventType is an enumeration of listener event types. +type ListenerEventType int + +const ( + // ListenerEventConnected is emitted only when the database connection + // has been initially initialized. The err argument of the callback + // will always be nil. + ListenerEventConnected ListenerEventType = iota + + // ListenerEventDisconnected is emitted after a database connection has + // been lost, either because of an error or because Close has been + // called. The err argument will be set to the reason the database + // connection was lost. + ListenerEventDisconnected + + // ListenerEventReconnected is emitted after a database connection has + // been re-established after connection loss. The err argument of the + // callback will always be nil. After this event has been emitted, a + // nil pq.Notification is sent on the Listener.Notify channel. + ListenerEventReconnected + + // ListenerEventConnectionAttemptFailed is emitted after a connection + // to the database was attempted, but failed. The err argument will be + // set to an error describing why the connection attempt did not + // succeed. + ListenerEventConnectionAttemptFailed +) + +// EventCallbackType is the event callback type. See also ListenerEventType +// constants' documentation. +type EventCallbackType func(event ListenerEventType, err error) + +// Listener provides an interface for listening to notifications from a +// PostgreSQL database. For general usage information, see section +// "Notifications". +// +// Listener can safely be used from concurrently running goroutines. +type Listener struct { + // Channel for receiving notifications from the database. In some cases a + // nil value will be sent. See section "Notifications" above. + Notify chan *Notification + + name string + minReconnectInterval time.Duration + maxReconnectInterval time.Duration + dialer Dialer + eventCallback EventCallbackType + + lock sync.Mutex + isClosed bool + reconnectCond *sync.Cond + cn *ListenerConn + connNotificationChan <-chan *Notification + channels map[string]struct{} +} + +// NewListener creates a new database connection dedicated to LISTEN / NOTIFY. +// +// name should be set to a connection string to be used to establish the +// database connection (see section "Connection String Parameters" above). +// +// minReconnectInterval controls the duration to wait before trying to +// re-establish the database connection after connection loss. After each +// consecutive failure this interval is doubled, until maxReconnectInterval is +// reached. Successfully completing the connection establishment procedure +// resets the interval back to minReconnectInterval. +// +// The last parameter eventCallback can be set to a function which will be +// called by the Listener when the state of the underlying database connection +// changes. This callback will be called by the goroutine which dispatches the +// notifications over the Notify channel, so you should try to avoid doing +// potentially time-consuming operations from the callback. +func NewListener(name string, + minReconnectInterval time.Duration, + maxReconnectInterval time.Duration, + eventCallback EventCallbackType) *Listener { + return NewDialListener(defaultDialer{}, name, minReconnectInterval, maxReconnectInterval, eventCallback) +} + +// NewDialListener is like NewListener but it takes a Dialer. +func NewDialListener(d Dialer, + name string, + minReconnectInterval time.Duration, + maxReconnectInterval time.Duration, + eventCallback EventCallbackType) *Listener { + + l := &Listener{ + name: name, + minReconnectInterval: minReconnectInterval, + maxReconnectInterval: maxReconnectInterval, + dialer: d, + eventCallback: eventCallback, + + channels: make(map[string]struct{}), + + Notify: make(chan *Notification, 32), + } + l.reconnectCond = sync.NewCond(&l.lock) + + go l.listenerMain() + + return l +} + +// NotificationChannel returns the notification channel for this listener. +// This is the same channel as Notify, and will not be recreated during the +// life time of the Listener. +func (l *Listener) NotificationChannel() <-chan *Notification { + return l.Notify +} + +// Listen starts listening for notifications on a channel. Calls to this +// function will block until an acknowledgement has been received from the +// server. Note that Listener automatically re-establishes the connection +// after connection loss, so this function may block indefinitely if the +// connection can not be re-established. +// +// Listen will only fail in three conditions: +// 1) The channel is already open. The returned error will be +// ErrChannelAlreadyOpen. +// 2) The query was executed on the remote server, but PostgreSQL returned an +// error message in response to the query. The returned error will be a +// pq.Error containing the information the server supplied. +// 3) Close is called on the Listener before the request could be completed. +// +// The channel name is case-sensitive. +func (l *Listener) Listen(channel string) error { + l.lock.Lock() + defer l.lock.Unlock() + + if l.isClosed { + return errListenerClosed + } + + // The server allows you to issue a LISTEN on a channel which is already + // open, but it seems useful to be able to detect this case to spot for + // mistakes in application logic. If the application genuinely does't + // care, it can check the exported error and ignore it. + _, exists := l.channels[channel] + if exists { + return ErrChannelAlreadyOpen + } + + if l.cn != nil { + // If gotResponse is true but error is set, the query was executed on + // the remote server, but resulted in an error. This should be + // relatively rare, so it's fine if we just pass the error to our + // caller. However, if gotResponse is false, we could not complete the + // query on the remote server and our underlying connection is about + // to go away, so we only add relname to l.channels, and wait for + // resync() to take care of the rest. + gotResponse, err := l.cn.Listen(channel) + if gotResponse && err != nil { + return err + } + } + + l.channels[channel] = struct{}{} + for l.cn == nil { + l.reconnectCond.Wait() + // we let go of the mutex for a while + if l.isClosed { + return errListenerClosed + } + } + + return nil +} + +// Unlisten removes a channel from the Listener's channel list. Returns +// ErrChannelNotOpen if the Listener is not listening on the specified channel. +// Returns immediately with no error if there is no connection. Note that you +// might still get notifications for this channel even after Unlisten has +// returned. +// +// The channel name is case-sensitive. +func (l *Listener) Unlisten(channel string) error { + l.lock.Lock() + defer l.lock.Unlock() + + if l.isClosed { + return errListenerClosed + } + + // Similarly to LISTEN, this is not an error in Postgres, but it seems + // useful to distinguish from the normal conditions. + _, exists := l.channels[channel] + if !exists { + return ErrChannelNotOpen + } + + if l.cn != nil { + // Similarly to Listen (see comment in that function), the caller + // should only be bothered with an error if it came from the backend as + // a response to our query. + gotResponse, err := l.cn.Unlisten(channel) + if gotResponse && err != nil { + return err + } + } + + // Don't bother waiting for resync if there's no connection. + delete(l.channels, channel) + return nil +} + +// UnlistenAll removes all channels from the Listener's channel list. Returns +// immediately with no error if there is no connection. Note that you might +// still get notifications for any of the deleted channels even after +// UnlistenAll has returned. +func (l *Listener) UnlistenAll() error { + l.lock.Lock() + defer l.lock.Unlock() + + if l.isClosed { + return errListenerClosed + } + + if l.cn != nil { + // Similarly to Listen (see comment in that function), the caller + // should only be bothered with an error if it came from the backend as + // a response to our query. + gotResponse, err := l.cn.UnlistenAll() + if gotResponse && err != nil { + return err + } + } + + // Don't bother waiting for resync if there's no connection. + l.channels = make(map[string]struct{}) + return nil +} + +// Ping the remote server to make sure it's alive. Non-nil return value means +// that there is no active connection. +func (l *Listener) Ping() error { + l.lock.Lock() + defer l.lock.Unlock() + + if l.isClosed { + return errListenerClosed + } + if l.cn == nil { + return errors.New("no connection") + } + + return l.cn.Ping() +} + +// Clean up after losing the server connection. Returns l.cn.Err(), which +// should have the reason the connection was lost. +func (l *Listener) disconnectCleanup() error { + l.lock.Lock() + defer l.lock.Unlock() + + // sanity check; can't look at Err() until the channel has been closed + select { + case _, ok := <-l.connNotificationChan: + if ok { + panic("connNotificationChan not closed") + } + default: + panic("connNotificationChan not closed") + } + + err := l.cn.Err() + l.cn.Close() + l.cn = nil + return err +} + +// Synchronize the list of channels we want to be listening on with the server +// after the connection has been established. +func (l *Listener) resync(cn *ListenerConn, notificationChan <-chan *Notification) error { + doneChan := make(chan error) + go func(notificationChan <-chan *Notification) { + for channel := range l.channels { + // If we got a response, return that error to our caller as it's + // going to be more descriptive than cn.Err(). + gotResponse, err := cn.Listen(channel) + if gotResponse && err != nil { + doneChan <- err + return + } + + // If we couldn't reach the server, wait for notificationChan to + // close and then return the error message from the connection, as + // per ListenerConn's interface. + if err != nil { + for range notificationChan { + } + doneChan <- cn.Err() + return + } + } + doneChan <- nil + }(notificationChan) + + // Ignore notifications while synchronization is going on to avoid + // deadlocks. We have to send a nil notification over Notify anyway as + // we can't possibly know which notifications (if any) were lost while + // the connection was down, so there's no reason to try and process + // these messages at all. + for { + select { + case _, ok := <-notificationChan: + if !ok { + notificationChan = nil + } + + case err := <-doneChan: + return err + } + } +} + +// caller should NOT be holding l.lock +func (l *Listener) closed() bool { + l.lock.Lock() + defer l.lock.Unlock() + + return l.isClosed +} + +func (l *Listener) connect() error { + notificationChan := make(chan *Notification, 32) + cn, err := newDialListenerConn(l.dialer, l.name, notificationChan) + if err != nil { + return err + } + + l.lock.Lock() + defer l.lock.Unlock() + + err = l.resync(cn, notificationChan) + if err != nil { + cn.Close() + return err + } + + l.cn = cn + l.connNotificationChan = notificationChan + l.reconnectCond.Broadcast() + + return nil +} + +// Close disconnects the Listener from the database and shuts it down. +// Subsequent calls to its methods will return an error. Close returns an +// error if the connection has already been closed. +func (l *Listener) Close() error { + l.lock.Lock() + defer l.lock.Unlock() + + if l.isClosed { + return errListenerClosed + } + + if l.cn != nil { + l.cn.Close() + } + l.isClosed = true + + // Unblock calls to Listen() + l.reconnectCond.Broadcast() + + return nil +} + +func (l *Listener) emitEvent(event ListenerEventType, err error) { + if l.eventCallback != nil { + l.eventCallback(event, err) + } +} + +// Main logic here: maintain a connection to the server when possible, wait +// for notifications and emit events. +func (l *Listener) listenerConnLoop() { + var nextReconnect time.Time + + reconnectInterval := l.minReconnectInterval + for { + for { + err := l.connect() + if err == nil { + break + } + + if l.closed() { + return + } + l.emitEvent(ListenerEventConnectionAttemptFailed, err) + + time.Sleep(reconnectInterval) + reconnectInterval *= 2 + if reconnectInterval > l.maxReconnectInterval { + reconnectInterval = l.maxReconnectInterval + } + } + + if nextReconnect.IsZero() { + l.emitEvent(ListenerEventConnected, nil) + } else { + l.emitEvent(ListenerEventReconnected, nil) + l.Notify <- nil + } + + reconnectInterval = l.minReconnectInterval + nextReconnect = time.Now().Add(reconnectInterval) + + for { + notification, ok := <-l.connNotificationChan + if !ok { + // lost connection, loop again + break + } + l.Notify <- notification + } + + err := l.disconnectCleanup() + if l.closed() { + return + } + l.emitEvent(ListenerEventDisconnected, err) + + time.Sleep(time.Until(nextReconnect)) + } +} + +func (l *Listener) listenerMain() { + l.listenerConnLoop() + close(l.Notify) +} diff --git a/vendor/github.com/lib/pq/oid/doc.go b/vendor/github.com/lib/pq/oid/doc.go new file mode 100644 index 0000000000..caaede2489 --- /dev/null +++ b/vendor/github.com/lib/pq/oid/doc.go @@ -0,0 +1,6 @@ +// Package oid contains OID constants +// as defined by the Postgres server. +package oid + +// Oid is a Postgres Object ID. +type Oid uint32 diff --git a/vendor/github.com/lib/pq/oid/gen.go b/vendor/github.com/lib/pq/oid/gen.go new file mode 100644 index 0000000000..7c634cdc5c --- /dev/null +++ b/vendor/github.com/lib/pq/oid/gen.go @@ -0,0 +1,93 @@ +// +build ignore + +// Generate the table of OID values +// Run with 'go run gen.go'. +package main + +import ( + "database/sql" + "fmt" + "log" + "os" + "os/exec" + "strings" + + _ "github.com/lib/pq" +) + +// OID represent a postgres Object Identifier Type. +type OID struct { + ID int + Type string +} + +// Name returns an upper case version of the oid type. +func (o OID) Name() string { + return strings.ToUpper(o.Type) +} + +func main() { + datname := os.Getenv("PGDATABASE") + sslmode := os.Getenv("PGSSLMODE") + + if datname == "" { + os.Setenv("PGDATABASE", "pqgotest") + } + + if sslmode == "" { + os.Setenv("PGSSLMODE", "disable") + } + + db, err := sql.Open("postgres", "") + if err != nil { + log.Fatal(err) + } + rows, err := db.Query(` + SELECT typname, oid + FROM pg_type WHERE oid < 10000 + ORDER BY oid; + `) + if err != nil { + log.Fatal(err) + } + oids := make([]*OID, 0) + for rows.Next() { + var oid OID + if err = rows.Scan(&oid.Type, &oid.ID); err != nil { + log.Fatal(err) + } + oids = append(oids, &oid) + } + if err = rows.Err(); err != nil { + log.Fatal(err) + } + cmd := exec.Command("gofmt") + cmd.Stderr = os.Stderr + w, err := cmd.StdinPipe() + if err != nil { + log.Fatal(err) + } + f, err := os.Create("types.go") + if err != nil { + log.Fatal(err) + } + cmd.Stdout = f + err = cmd.Start() + if err != nil { + log.Fatal(err) + } + fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.") + fmt.Fprintln(w, "\npackage oid") + fmt.Fprintln(w, "const (") + for _, oid := range oids { + fmt.Fprintf(w, "T_%s Oid = %d\n", oid.Type, oid.ID) + } + fmt.Fprintln(w, ")") + fmt.Fprintln(w, "var TypeName = map[Oid]string{") + for _, oid := range oids { + fmt.Fprintf(w, "T_%s: \"%s\",\n", oid.Type, oid.Name()) + } + fmt.Fprintln(w, "}") + w.Close() + cmd.Wait() +} diff --git a/vendor/github.com/lib/pq/oid/types.go b/vendor/github.com/lib/pq/oid/types.go new file mode 100644 index 0000000000..ecc84c2c86 --- /dev/null +++ b/vendor/github.com/lib/pq/oid/types.go @@ -0,0 +1,343 @@ +// Code generated by gen.go. DO NOT EDIT. + +package oid + +const ( + T_bool Oid = 16 + T_bytea Oid = 17 + T_char Oid = 18 + T_name Oid = 19 + T_int8 Oid = 20 + T_int2 Oid = 21 + T_int2vector Oid = 22 + T_int4 Oid = 23 + T_regproc Oid = 24 + T_text Oid = 25 + T_oid Oid = 26 + T_tid Oid = 27 + T_xid Oid = 28 + T_cid Oid = 29 + T_oidvector Oid = 30 + T_pg_ddl_command Oid = 32 + T_pg_type Oid = 71 + T_pg_attribute Oid = 75 + T_pg_proc Oid = 81 + T_pg_class Oid = 83 + T_json Oid = 114 + T_xml Oid = 142 + T__xml Oid = 143 + T_pg_node_tree Oid = 194 + T__json Oid = 199 + T_smgr Oid = 210 + T_index_am_handler Oid = 325 + T_point Oid = 600 + T_lseg Oid = 601 + T_path Oid = 602 + T_box Oid = 603 + T_polygon Oid = 604 + T_line Oid = 628 + T__line Oid = 629 + T_cidr Oid = 650 + T__cidr Oid = 651 + T_float4 Oid = 700 + T_float8 Oid = 701 + T_abstime Oid = 702 + T_reltime Oid = 703 + T_tinterval Oid = 704 + T_unknown Oid = 705 + T_circle Oid = 718 + T__circle Oid = 719 + T_money Oid = 790 + T__money Oid = 791 + T_macaddr Oid = 829 + T_inet Oid = 869 + T__bool Oid = 1000 + T__bytea Oid = 1001 + T__char Oid = 1002 + T__name Oid = 1003 + T__int2 Oid = 1005 + T__int2vector Oid = 1006 + T__int4 Oid = 1007 + T__regproc Oid = 1008 + T__text Oid = 1009 + T__tid Oid = 1010 + T__xid Oid = 1011 + T__cid Oid = 1012 + T__oidvector Oid = 1013 + T__bpchar Oid = 1014 + T__varchar Oid = 1015 + T__int8 Oid = 1016 + T__point Oid = 1017 + T__lseg Oid = 1018 + T__path Oid = 1019 + T__box Oid = 1020 + T__float4 Oid = 1021 + T__float8 Oid = 1022 + T__abstime Oid = 1023 + T__reltime Oid = 1024 + T__tinterval Oid = 1025 + T__polygon Oid = 1027 + T__oid Oid = 1028 + T_aclitem Oid = 1033 + T__aclitem Oid = 1034 + T__macaddr Oid = 1040 + T__inet Oid = 1041 + T_bpchar Oid = 1042 + T_varchar Oid = 1043 + T_date Oid = 1082 + T_time Oid = 1083 + T_timestamp Oid = 1114 + T__timestamp Oid = 1115 + T__date Oid = 1182 + T__time Oid = 1183 + T_timestamptz Oid = 1184 + T__timestamptz Oid = 1185 + T_interval Oid = 1186 + T__interval Oid = 1187 + T__numeric Oid = 1231 + T_pg_database Oid = 1248 + T__cstring Oid = 1263 + T_timetz Oid = 1266 + T__timetz Oid = 1270 + T_bit Oid = 1560 + T__bit Oid = 1561 + T_varbit Oid = 1562 + T__varbit Oid = 1563 + T_numeric Oid = 1700 + T_refcursor Oid = 1790 + T__refcursor Oid = 2201 + T_regprocedure Oid = 2202 + T_regoper Oid = 2203 + T_regoperator Oid = 2204 + T_regclass Oid = 2205 + T_regtype Oid = 2206 + T__regprocedure Oid = 2207 + T__regoper Oid = 2208 + T__regoperator Oid = 2209 + T__regclass Oid = 2210 + T__regtype Oid = 2211 + T_record Oid = 2249 + T_cstring Oid = 2275 + T_any Oid = 2276 + T_anyarray Oid = 2277 + T_void Oid = 2278 + T_trigger Oid = 2279 + T_language_handler Oid = 2280 + T_internal Oid = 2281 + T_opaque Oid = 2282 + T_anyelement Oid = 2283 + T__record Oid = 2287 + T_anynonarray Oid = 2776 + T_pg_authid Oid = 2842 + T_pg_auth_members Oid = 2843 + T__txid_snapshot Oid = 2949 + T_uuid Oid = 2950 + T__uuid Oid = 2951 + T_txid_snapshot Oid = 2970 + T_fdw_handler Oid = 3115 + T_pg_lsn Oid = 3220 + T__pg_lsn Oid = 3221 + T_tsm_handler Oid = 3310 + T_anyenum Oid = 3500 + T_tsvector Oid = 3614 + T_tsquery Oid = 3615 + T_gtsvector Oid = 3642 + T__tsvector Oid = 3643 + T__gtsvector Oid = 3644 + T__tsquery Oid = 3645 + T_regconfig Oid = 3734 + T__regconfig Oid = 3735 + T_regdictionary Oid = 3769 + T__regdictionary Oid = 3770 + T_jsonb Oid = 3802 + T__jsonb Oid = 3807 + T_anyrange Oid = 3831 + T_event_trigger Oid = 3838 + T_int4range Oid = 3904 + T__int4range Oid = 3905 + T_numrange Oid = 3906 + T__numrange Oid = 3907 + T_tsrange Oid = 3908 + T__tsrange Oid = 3909 + T_tstzrange Oid = 3910 + T__tstzrange Oid = 3911 + T_daterange Oid = 3912 + T__daterange Oid = 3913 + T_int8range Oid = 3926 + T__int8range Oid = 3927 + T_pg_shseclabel Oid = 4066 + T_regnamespace Oid = 4089 + T__regnamespace Oid = 4090 + T_regrole Oid = 4096 + T__regrole Oid = 4097 +) + +var TypeName = map[Oid]string{ + T_bool: "BOOL", + T_bytea: "BYTEA", + T_char: "CHAR", + T_name: "NAME", + T_int8: "INT8", + T_int2: "INT2", + T_int2vector: "INT2VECTOR", + T_int4: "INT4", + T_regproc: "REGPROC", + T_text: "TEXT", + T_oid: "OID", + T_tid: "TID", + T_xid: "XID", + T_cid: "CID", + T_oidvector: "OIDVECTOR", + T_pg_ddl_command: "PG_DDL_COMMAND", + T_pg_type: "PG_TYPE", + T_pg_attribute: "PG_ATTRIBUTE", + T_pg_proc: "PG_PROC", + T_pg_class: "PG_CLASS", + T_json: "JSON", + T_xml: "XML", + T__xml: "_XML", + T_pg_node_tree: "PG_NODE_TREE", + T__json: "_JSON", + T_smgr: "SMGR", + T_index_am_handler: "INDEX_AM_HANDLER", + T_point: "POINT", + T_lseg: "LSEG", + T_path: "PATH", + T_box: "BOX", + T_polygon: "POLYGON", + T_line: "LINE", + T__line: "_LINE", + T_cidr: "CIDR", + T__cidr: "_CIDR", + T_float4: "FLOAT4", + T_float8: "FLOAT8", + T_abstime: "ABSTIME", + T_reltime: "RELTIME", + T_tinterval: "TINTERVAL", + T_unknown: "UNKNOWN", + T_circle: "CIRCLE", + T__circle: "_CIRCLE", + T_money: "MONEY", + T__money: "_MONEY", + T_macaddr: "MACADDR", + T_inet: "INET", + T__bool: "_BOOL", + T__bytea: "_BYTEA", + T__char: "_CHAR", + T__name: "_NAME", + T__int2: "_INT2", + T__int2vector: "_INT2VECTOR", + T__int4: "_INT4", + T__regproc: "_REGPROC", + T__text: "_TEXT", + T__tid: "_TID", + T__xid: "_XID", + T__cid: "_CID", + T__oidvector: "_OIDVECTOR", + T__bpchar: "_BPCHAR", + T__varchar: "_VARCHAR", + T__int8: "_INT8", + T__point: "_POINT", + T__lseg: "_LSEG", + T__path: "_PATH", + T__box: "_BOX", + T__float4: "_FLOAT4", + T__float8: "_FLOAT8", + T__abstime: "_ABSTIME", + T__reltime: "_RELTIME", + T__tinterval: "_TINTERVAL", + T__polygon: "_POLYGON", + T__oid: "_OID", + T_aclitem: "ACLITEM", + T__aclitem: "_ACLITEM", + T__macaddr: "_MACADDR", + T__inet: "_INET", + T_bpchar: "BPCHAR", + T_varchar: "VARCHAR", + T_date: "DATE", + T_time: "TIME", + T_timestamp: "TIMESTAMP", + T__timestamp: "_TIMESTAMP", + T__date: "_DATE", + T__time: "_TIME", + T_timestamptz: "TIMESTAMPTZ", + T__timestamptz: "_TIMESTAMPTZ", + T_interval: "INTERVAL", + T__interval: "_INTERVAL", + T__numeric: "_NUMERIC", + T_pg_database: "PG_DATABASE", + T__cstring: "_CSTRING", + T_timetz: "TIMETZ", + T__timetz: "_TIMETZ", + T_bit: "BIT", + T__bit: "_BIT", + T_varbit: "VARBIT", + T__varbit: "_VARBIT", + T_numeric: "NUMERIC", + T_refcursor: "REFCURSOR", + T__refcursor: "_REFCURSOR", + T_regprocedure: "REGPROCEDURE", + T_regoper: "REGOPER", + T_regoperator: "REGOPERATOR", + T_regclass: "REGCLASS", + T_regtype: "REGTYPE", + T__regprocedure: "_REGPROCEDURE", + T__regoper: "_REGOPER", + T__regoperator: "_REGOPERATOR", + T__regclass: "_REGCLASS", + T__regtype: "_REGTYPE", + T_record: "RECORD", + T_cstring: "CSTRING", + T_any: "ANY", + T_anyarray: "ANYARRAY", + T_void: "VOID", + T_trigger: "TRIGGER", + T_language_handler: "LANGUAGE_HANDLER", + T_internal: "INTERNAL", + T_opaque: "OPAQUE", + T_anyelement: "ANYELEMENT", + T__record: "_RECORD", + T_anynonarray: "ANYNONARRAY", + T_pg_authid: "PG_AUTHID", + T_pg_auth_members: "PG_AUTH_MEMBERS", + T__txid_snapshot: "_TXID_SNAPSHOT", + T_uuid: "UUID", + T__uuid: "_UUID", + T_txid_snapshot: "TXID_SNAPSHOT", + T_fdw_handler: "FDW_HANDLER", + T_pg_lsn: "PG_LSN", + T__pg_lsn: "_PG_LSN", + T_tsm_handler: "TSM_HANDLER", + T_anyenum: "ANYENUM", + T_tsvector: "TSVECTOR", + T_tsquery: "TSQUERY", + T_gtsvector: "GTSVECTOR", + T__tsvector: "_TSVECTOR", + T__gtsvector: "_GTSVECTOR", + T__tsquery: "_TSQUERY", + T_regconfig: "REGCONFIG", + T__regconfig: "_REGCONFIG", + T_regdictionary: "REGDICTIONARY", + T__regdictionary: "_REGDICTIONARY", + T_jsonb: "JSONB", + T__jsonb: "_JSONB", + T_anyrange: "ANYRANGE", + T_event_trigger: "EVENT_TRIGGER", + T_int4range: "INT4RANGE", + T__int4range: "_INT4RANGE", + T_numrange: "NUMRANGE", + T__numrange: "_NUMRANGE", + T_tsrange: "TSRANGE", + T__tsrange: "_TSRANGE", + T_tstzrange: "TSTZRANGE", + T__tstzrange: "_TSTZRANGE", + T_daterange: "DATERANGE", + T__daterange: "_DATERANGE", + T_int8range: "INT8RANGE", + T__int8range: "_INT8RANGE", + T_pg_shseclabel: "PG_SHSECLABEL", + T_regnamespace: "REGNAMESPACE", + T__regnamespace: "_REGNAMESPACE", + T_regrole: "REGROLE", + T__regrole: "_REGROLE", +} diff --git a/vendor/github.com/lib/pq/rows.go b/vendor/github.com/lib/pq/rows.go new file mode 100644 index 0000000000..c6aa5b9a36 --- /dev/null +++ b/vendor/github.com/lib/pq/rows.go @@ -0,0 +1,93 @@ +package pq + +import ( + "math" + "reflect" + "time" + + "github.com/lib/pq/oid" +) + +const headerSize = 4 + +type fieldDesc struct { + // The object ID of the data type. + OID oid.Oid + // The data type size (see pg_type.typlen). + // Note that negative values denote variable-width types. + Len int + // The type modifier (see pg_attribute.atttypmod). + // The meaning of the modifier is type-specific. + Mod int +} + +func (fd fieldDesc) Type() reflect.Type { + switch fd.OID { + case oid.T_int8: + return reflect.TypeOf(int64(0)) + case oid.T_int4: + return reflect.TypeOf(int32(0)) + case oid.T_int2: + return reflect.TypeOf(int16(0)) + case oid.T_varchar, oid.T_text: + return reflect.TypeOf("") + case oid.T_bool: + return reflect.TypeOf(false) + case oid.T_date, oid.T_time, oid.T_timetz, oid.T_timestamp, oid.T_timestamptz: + return reflect.TypeOf(time.Time{}) + case oid.T_bytea: + return reflect.TypeOf([]byte(nil)) + default: + return reflect.TypeOf(new(interface{})).Elem() + } +} + +func (fd fieldDesc) Name() string { + return oid.TypeName[fd.OID] +} + +func (fd fieldDesc) Length() (length int64, ok bool) { + switch fd.OID { + case oid.T_text, oid.T_bytea: + return math.MaxInt64, true + case oid.T_varchar, oid.T_bpchar: + return int64(fd.Mod - headerSize), true + default: + return 0, false + } +} + +func (fd fieldDesc) PrecisionScale() (precision, scale int64, ok bool) { + switch fd.OID { + case oid.T_numeric, oid.T__numeric: + mod := fd.Mod - headerSize + precision = int64((mod >> 16) & 0xffff) + scale = int64(mod & 0xffff) + return precision, scale, true + default: + return 0, 0, false + } +} + +// ColumnTypeScanType returns the value type that can be used to scan types into. +func (rs *rows) ColumnTypeScanType(index int) reflect.Type { + return rs.colTyps[index].Type() +} + +// ColumnTypeDatabaseTypeName return the database system type name. +func (rs *rows) ColumnTypeDatabaseTypeName(index int) string { + return rs.colTyps[index].Name() +} + +// ColumnTypeLength returns the length of the column type if the column is a +// variable length type. If the column is not a variable length type ok +// should return false. +func (rs *rows) ColumnTypeLength(index int) (length int64, ok bool) { + return rs.colTyps[index].Length() +} + +// ColumnTypePrecisionScale should return the precision and scale for decimal +// types. If not applicable, ok should be false. +func (rs *rows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) { + return rs.colTyps[index].PrecisionScale() +} diff --git a/vendor/github.com/lib/pq/scram/scram.go b/vendor/github.com/lib/pq/scram/scram.go new file mode 100644 index 0000000000..5d0358f8ff --- /dev/null +++ b/vendor/github.com/lib/pq/scram/scram.go @@ -0,0 +1,264 @@ +// Copyright (c) 2014 - Gustavo Niemeyer +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright notice, this +// list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR +// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Pacakage scram implements a SCRAM-{SHA-1,etc} client per RFC5802. +// +// http://tools.ietf.org/html/rfc5802 +// +package scram + +import ( + "bytes" + "crypto/hmac" + "crypto/rand" + "encoding/base64" + "fmt" + "hash" + "strconv" + "strings" +) + +// Client implements a SCRAM-* client (SCRAM-SHA-1, SCRAM-SHA-256, etc). +// +// A Client may be used within a SASL conversation with logic resembling: +// +// var in []byte +// var client = scram.NewClient(sha1.New, user, pass) +// for client.Step(in) { +// out := client.Out() +// // send out to server +// in := serverOut +// } +// if client.Err() != nil { +// // auth failed +// } +// +type Client struct { + newHash func() hash.Hash + + user string + pass string + step int + out bytes.Buffer + err error + + clientNonce []byte + serverNonce []byte + saltedPass []byte + authMsg bytes.Buffer +} + +// NewClient returns a new SCRAM-* client with the provided hash algorithm. +// +// For SCRAM-SHA-256, for example, use: +// +// client := scram.NewClient(sha256.New, user, pass) +// +func NewClient(newHash func() hash.Hash, user, pass string) *Client { + c := &Client{ + newHash: newHash, + user: user, + pass: pass, + } + c.out.Grow(256) + c.authMsg.Grow(256) + return c +} + +// Out returns the data to be sent to the server in the current step. +func (c *Client) Out() []byte { + if c.out.Len() == 0 { + return nil + } + return c.out.Bytes() +} + +// Err returns the error that ocurred, or nil if there were no errors. +func (c *Client) Err() error { + return c.err +} + +// SetNonce sets the client nonce to the provided value. +// If not set, the nonce is generated automatically out of crypto/rand on the first step. +func (c *Client) SetNonce(nonce []byte) { + c.clientNonce = nonce +} + +var escaper = strings.NewReplacer("=", "=3D", ",", "=2C") + +// Step processes the incoming data from the server and makes the +// next round of data for the server available via Client.Out. +// Step returns false if there are no errors and more data is +// still expected. +func (c *Client) Step(in []byte) bool { + c.out.Reset() + if c.step > 2 || c.err != nil { + return false + } + c.step++ + switch c.step { + case 1: + c.err = c.step1(in) + case 2: + c.err = c.step2(in) + case 3: + c.err = c.step3(in) + } + return c.step > 2 || c.err != nil +} + +func (c *Client) step1(in []byte) error { + if len(c.clientNonce) == 0 { + const nonceLen = 16 + buf := make([]byte, nonceLen+b64.EncodedLen(nonceLen)) + if _, err := rand.Read(buf[:nonceLen]); err != nil { + return fmt.Errorf("cannot read random SCRAM-SHA-256 nonce from operating system: %v", err) + } + c.clientNonce = buf[nonceLen:] + b64.Encode(c.clientNonce, buf[:nonceLen]) + } + c.authMsg.WriteString("n=") + escaper.WriteString(&c.authMsg, c.user) + c.authMsg.WriteString(",r=") + c.authMsg.Write(c.clientNonce) + + c.out.WriteString("n,,") + c.out.Write(c.authMsg.Bytes()) + return nil +} + +var b64 = base64.StdEncoding + +func (c *Client) step2(in []byte) error { + c.authMsg.WriteByte(',') + c.authMsg.Write(in) + + fields := bytes.Split(in, []byte(",")) + if len(fields) != 3 { + return fmt.Errorf("expected 3 fields in first SCRAM-SHA-256 server message, got %d: %q", len(fields), in) + } + if !bytes.HasPrefix(fields[0], []byte("r=")) || len(fields[0]) < 2 { + return fmt.Errorf("server sent an invalid SCRAM-SHA-256 nonce: %q", fields[0]) + } + if !bytes.HasPrefix(fields[1], []byte("s=")) || len(fields[1]) < 6 { + return fmt.Errorf("server sent an invalid SCRAM-SHA-256 salt: %q", fields[1]) + } + if !bytes.HasPrefix(fields[2], []byte("i=")) || len(fields[2]) < 6 { + return fmt.Errorf("server sent an invalid SCRAM-SHA-256 iteration count: %q", fields[2]) + } + + c.serverNonce = fields[0][2:] + if !bytes.HasPrefix(c.serverNonce, c.clientNonce) { + return fmt.Errorf("server SCRAM-SHA-256 nonce is not prefixed by client nonce: got %q, want %q+\"...\"", c.serverNonce, c.clientNonce) + } + + salt := make([]byte, b64.DecodedLen(len(fields[1][2:]))) + n, err := b64.Decode(salt, fields[1][2:]) + if err != nil { + return fmt.Errorf("cannot decode SCRAM-SHA-256 salt sent by server: %q", fields[1]) + } + salt = salt[:n] + iterCount, err := strconv.Atoi(string(fields[2][2:])) + if err != nil { + return fmt.Errorf("server sent an invalid SCRAM-SHA-256 iteration count: %q", fields[2]) + } + c.saltPassword(salt, iterCount) + + c.authMsg.WriteString(",c=biws,r=") + c.authMsg.Write(c.serverNonce) + + c.out.WriteString("c=biws,r=") + c.out.Write(c.serverNonce) + c.out.WriteString(",p=") + c.out.Write(c.clientProof()) + return nil +} + +func (c *Client) step3(in []byte) error { + var isv, ise bool + var fields = bytes.Split(in, []byte(",")) + if len(fields) == 1 { + isv = bytes.HasPrefix(fields[0], []byte("v=")) + ise = bytes.HasPrefix(fields[0], []byte("e=")) + } + if ise { + return fmt.Errorf("SCRAM-SHA-256 authentication error: %s", fields[0][2:]) + } else if !isv { + return fmt.Errorf("unsupported SCRAM-SHA-256 final message from server: %q", in) + } + if !bytes.Equal(c.serverSignature(), fields[0][2:]) { + return fmt.Errorf("cannot authenticate SCRAM-SHA-256 server signature: %q", fields[0][2:]) + } + return nil +} + +func (c *Client) saltPassword(salt []byte, iterCount int) { + mac := hmac.New(c.newHash, []byte(c.pass)) + mac.Write(salt) + mac.Write([]byte{0, 0, 0, 1}) + ui := mac.Sum(nil) + hi := make([]byte, len(ui)) + copy(hi, ui) + for i := 1; i < iterCount; i++ { + mac.Reset() + mac.Write(ui) + mac.Sum(ui[:0]) + for j, b := range ui { + hi[j] ^= b + } + } + c.saltedPass = hi +} + +func (c *Client) clientProof() []byte { + mac := hmac.New(c.newHash, c.saltedPass) + mac.Write([]byte("Client Key")) + clientKey := mac.Sum(nil) + hash := c.newHash() + hash.Write(clientKey) + storedKey := hash.Sum(nil) + mac = hmac.New(c.newHash, storedKey) + mac.Write(c.authMsg.Bytes()) + clientProof := mac.Sum(nil) + for i, b := range clientKey { + clientProof[i] ^= b + } + clientProof64 := make([]byte, b64.EncodedLen(len(clientProof))) + b64.Encode(clientProof64, clientProof) + return clientProof64 +} + +func (c *Client) serverSignature() []byte { + mac := hmac.New(c.newHash, c.saltedPass) + mac.Write([]byte("Server Key")) + serverKey := mac.Sum(nil) + + mac = hmac.New(c.newHash, serverKey) + mac.Write(c.authMsg.Bytes()) + serverSignature := mac.Sum(nil) + + encoded := make([]byte, b64.EncodedLen(len(serverSignature))) + b64.Encode(encoded, serverSignature) + return encoded +} diff --git a/vendor/github.com/lib/pq/ssl.go b/vendor/github.com/lib/pq/ssl.go new file mode 100644 index 0000000000..d902084558 --- /dev/null +++ b/vendor/github.com/lib/pq/ssl.go @@ -0,0 +1,175 @@ +package pq + +import ( + "crypto/tls" + "crypto/x509" + "io/ioutil" + "net" + "os" + "os/user" + "path/filepath" +) + +// ssl generates a function to upgrade a net.Conn based on the "sslmode" and +// related settings. The function is nil when no upgrade should take place. +func ssl(o values) (func(net.Conn) (net.Conn, error), error) { + verifyCaOnly := false + tlsConf := tls.Config{} + switch mode := o["sslmode"]; mode { + // "require" is the default. + case "", "require": + // We must skip TLS's own verification since it requires full + // verification since Go 1.3. + tlsConf.InsecureSkipVerify = true + + // From http://www.postgresql.org/docs/current/static/libpq-ssl.html: + // + // Note: For backwards compatibility with earlier versions of + // PostgreSQL, if a root CA file exists, the behavior of + // sslmode=require will be the same as that of verify-ca, meaning the + // server certificate is validated against the CA. Relying on this + // behavior is discouraged, and applications that need certificate + // validation should always use verify-ca or verify-full. + if sslrootcert, ok := o["sslrootcert"]; ok { + if _, err := os.Stat(sslrootcert); err == nil { + verifyCaOnly = true + } else { + delete(o, "sslrootcert") + } + } + case "verify-ca": + // We must skip TLS's own verification since it requires full + // verification since Go 1.3. + tlsConf.InsecureSkipVerify = true + verifyCaOnly = true + case "verify-full": + tlsConf.ServerName = o["host"] + case "disable": + return nil, nil + default: + return nil, fmterrorf(`unsupported sslmode %q; only "require" (default), "verify-full", "verify-ca", and "disable" supported`, mode) + } + + err := sslClientCertificates(&tlsConf, o) + if err != nil { + return nil, err + } + err = sslCertificateAuthority(&tlsConf, o) + if err != nil { + return nil, err + } + + // Accept renegotiation requests initiated by the backend. + // + // Renegotiation was deprecated then removed from PostgreSQL 9.5, but + // the default configuration of older versions has it enabled. Redshift + // also initiates renegotiations and cannot be reconfigured. + tlsConf.Renegotiation = tls.RenegotiateFreelyAsClient + + return func(conn net.Conn) (net.Conn, error) { + client := tls.Client(conn, &tlsConf) + if verifyCaOnly { + err := sslVerifyCertificateAuthority(client, &tlsConf) + if err != nil { + return nil, err + } + } + return client, nil + }, nil +} + +// sslClientCertificates adds the certificate specified in the "sslcert" and +// "sslkey" settings, or if they aren't set, from the .postgresql directory +// in the user's home directory. The configured files must exist and have +// the correct permissions. +func sslClientCertificates(tlsConf *tls.Config, o values) error { + // user.Current() might fail when cross-compiling. We have to ignore the + // error and continue without home directory defaults, since we wouldn't + // know from where to load them. + user, _ := user.Current() + + // In libpq, the client certificate is only loaded if the setting is not blank. + // + // https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1036-L1037 + sslcert := o["sslcert"] + if len(sslcert) == 0 && user != nil { + sslcert = filepath.Join(user.HomeDir, ".postgresql", "postgresql.crt") + } + // https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1045 + if len(sslcert) == 0 { + return nil + } + // https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1050:L1054 + if _, err := os.Stat(sslcert); os.IsNotExist(err) { + return nil + } else if err != nil { + return err + } + + // In libpq, the ssl key is only loaded if the setting is not blank. + // + // https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1123-L1222 + sslkey := o["sslkey"] + if len(sslkey) == 0 && user != nil { + sslkey = filepath.Join(user.HomeDir, ".postgresql", "postgresql.key") + } + + if len(sslkey) > 0 { + if err := sslKeyPermissions(sslkey); err != nil { + return err + } + } + + cert, err := tls.LoadX509KeyPair(sslcert, sslkey) + if err != nil { + return err + } + + tlsConf.Certificates = []tls.Certificate{cert} + return nil +} + +// sslCertificateAuthority adds the RootCA specified in the "sslrootcert" setting. +func sslCertificateAuthority(tlsConf *tls.Config, o values) error { + // In libpq, the root certificate is only loaded if the setting is not blank. + // + // https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L950-L951 + if sslrootcert := o["sslrootcert"]; len(sslrootcert) > 0 { + tlsConf.RootCAs = x509.NewCertPool() + + cert, err := ioutil.ReadFile(sslrootcert) + if err != nil { + return err + } + + if !tlsConf.RootCAs.AppendCertsFromPEM(cert) { + return fmterrorf("couldn't parse pem in sslrootcert") + } + } + + return nil +} + +// sslVerifyCertificateAuthority carries out a TLS handshake to the server and +// verifies the presented certificate against the CA, i.e. the one specified in +// sslrootcert or the system CA if sslrootcert was not specified. +func sslVerifyCertificateAuthority(client *tls.Conn, tlsConf *tls.Config) error { + err := client.Handshake() + if err != nil { + return err + } + certs := client.ConnectionState().PeerCertificates + opts := x509.VerifyOptions{ + DNSName: client.ConnectionState().ServerName, + Intermediates: x509.NewCertPool(), + Roots: tlsConf.RootCAs, + } + for i, cert := range certs { + if i == 0 { + continue + } + opts.Intermediates.AddCert(cert) + } + _, err = certs[0].Verify(opts) + return err +} diff --git a/vendor/github.com/lib/pq/ssl_permissions.go b/vendor/github.com/lib/pq/ssl_permissions.go new file mode 100644 index 0000000000..3b7c3a2a31 --- /dev/null +++ b/vendor/github.com/lib/pq/ssl_permissions.go @@ -0,0 +1,20 @@ +// +build !windows + +package pq + +import "os" + +// sslKeyPermissions checks the permissions on user-supplied ssl key files. +// The key file should have very little access. +// +// libpq does not check key file permissions on Windows. +func sslKeyPermissions(sslkey string) error { + info, err := os.Stat(sslkey) + if err != nil { + return err + } + if info.Mode().Perm()&0077 != 0 { + return ErrSSLKeyHasWorldPermissions + } + return nil +} diff --git a/vendor/github.com/lib/pq/ssl_windows.go b/vendor/github.com/lib/pq/ssl_windows.go new file mode 100644 index 0000000000..5d2c763ceb --- /dev/null +++ b/vendor/github.com/lib/pq/ssl_windows.go @@ -0,0 +1,9 @@ +// +build windows + +package pq + +// sslKeyPermissions checks the permissions on user-supplied ssl key files. +// The key file should have very little access. +// +// libpq does not check key file permissions on Windows. +func sslKeyPermissions(string) error { return nil } diff --git a/vendor/github.com/lib/pq/url.go b/vendor/github.com/lib/pq/url.go new file mode 100644 index 0000000000..f4d8a7c206 --- /dev/null +++ b/vendor/github.com/lib/pq/url.go @@ -0,0 +1,76 @@ +package pq + +import ( + "fmt" + "net" + nurl "net/url" + "sort" + "strings" +) + +// ParseURL no longer needs to be used by clients of this library since supplying a URL as a +// connection string to sql.Open() is now supported: +// +// sql.Open("postgres", "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full") +// +// It remains exported here for backwards-compatibility. +// +// ParseURL converts a url to a connection string for driver.Open. +// Example: +// +// "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full" +// +// converts to: +// +// "user=bob password=secret host=1.2.3.4 port=5432 dbname=mydb sslmode=verify-full" +// +// A minimal example: +// +// "postgres://" +// +// This will be blank, causing driver.Open to use all of the defaults +func ParseURL(url string) (string, error) { + u, err := nurl.Parse(url) + if err != nil { + return "", err + } + + if u.Scheme != "postgres" && u.Scheme != "postgresql" { + return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme) + } + + var kvs []string + escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`) + accrue := func(k, v string) { + if v != "" { + kvs = append(kvs, k+"="+escaper.Replace(v)) + } + } + + if u.User != nil { + v := u.User.Username() + accrue("user", v) + + v, _ = u.User.Password() + accrue("password", v) + } + + if host, port, err := net.SplitHostPort(u.Host); err != nil { + accrue("host", u.Host) + } else { + accrue("host", host) + accrue("port", port) + } + + if u.Path != "" { + accrue("dbname", u.Path[1:]) + } + + q := u.Query() + for k := range q { + accrue(k, q.Get(k)) + } + + sort.Strings(kvs) // Makes testing easier (not a performance concern) + return strings.Join(kvs, " "), nil +} diff --git a/vendor/github.com/lib/pq/user_posix.go b/vendor/github.com/lib/pq/user_posix.go new file mode 100644 index 0000000000..bf982524f9 --- /dev/null +++ b/vendor/github.com/lib/pq/user_posix.go @@ -0,0 +1,24 @@ +// Package pq is a pure Go Postgres driver for the database/sql package. + +// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris rumprun + +package pq + +import ( + "os" + "os/user" +) + +func userCurrent() (string, error) { + u, err := user.Current() + if err == nil { + return u.Username, nil + } + + name := os.Getenv("USER") + if name != "" { + return name, nil + } + + return "", ErrCouldNotDetectUsername +} diff --git a/vendor/github.com/lib/pq/user_windows.go b/vendor/github.com/lib/pq/user_windows.go new file mode 100644 index 0000000000..2b691267b9 --- /dev/null +++ b/vendor/github.com/lib/pq/user_windows.go @@ -0,0 +1,27 @@ +// Package pq is a pure Go Postgres driver for the database/sql package. +package pq + +import ( + "path/filepath" + "syscall" +) + +// Perform Windows user name lookup identically to libpq. +// +// The PostgreSQL code makes use of the legacy Win32 function +// GetUserName, and that function has not been imported into stock Go. +// GetUserNameEx is available though, the difference being that a +// wider range of names are available. To get the output to be the +// same as GetUserName, only the base (or last) component of the +// result is returned. +func userCurrent() (string, error) { + pw_name := make([]uint16, 128) + pwname_size := uint32(len(pw_name)) - 1 + err := syscall.GetUserNameEx(syscall.NameSamCompatible, &pw_name[0], &pwname_size) + if err != nil { + return "", ErrCouldNotDetectUsername + } + s := syscall.UTF16ToString(pw_name) + u := filepath.Base(s) + return u, nil +} diff --git a/vendor/github.com/lib/pq/uuid.go b/vendor/github.com/lib/pq/uuid.go new file mode 100644 index 0000000000..9a1b9e0748 --- /dev/null +++ b/vendor/github.com/lib/pq/uuid.go @@ -0,0 +1,23 @@ +package pq + +import ( + "encoding/hex" + "fmt" +) + +// decodeUUIDBinary interprets the binary format of a uuid, returning it in text format. +func decodeUUIDBinary(src []byte) ([]byte, error) { + if len(src) != 16 { + return nil, fmt.Errorf("pq: unable to decode uuid; bad length: %d", len(src)) + } + + dst := make([]byte, 36) + dst[8], dst[13], dst[18], dst[23] = '-', '-', '-', '-' + hex.Encode(dst[0:], src[0:4]) + hex.Encode(dst[9:], src[4:6]) + hex.Encode(dst[14:], src[6:8]) + hex.Encode(dst[19:], src[8:10]) + hex.Encode(dst[24:], src[10:16]) + + return dst, nil +}