Crow/include/crow/common.h
The-EDev 4cdde73388
Optimized HTTP parser
Also (likely) fixed problem with streaming without keeping connection
alive
Also fixed problem with multipart hanging on request
Also updated TODO entries to indicate Writer
2022-02-05 18:15:19 +03:00

333 lines
9.0 KiB
C++

#pragma once
#include <vector>
#include <string>
#include <stdexcept>
#include <iostream>
#include "crow/utility.h"
// TODO(EDev): Adding C++20's [[likely]] and [[unlikely]] attributes might be useful
#if defined(__GNUG__) || defined(__clang__)
#define CROW_LIKELY(X) __builtin_expect(!!(X), 1)
#define CROW_UNLIKELY(X) __builtin_expect(!!(X), 0)
#else
#define CROW_LIKELY(X) (X)
#define CROW_UNLIKELY(X) (X)
#endif
namespace crow
{
const char cr = '\r';
const char lf = '\n';
const std::string crlf("\r\n");
enum class HTTPMethod : char
{
#ifndef DELETE
DELETE = 0,
GET,
HEAD,
POST,
PUT,
CONNECT,
OPTIONS,
TRACE,
PATCH,
PURGE,
COPY,
LOCK,
MKCOL,
MOVE,
PROPFIND,
PROPPATCH,
SEARCH,
UNLOCK,
BIND,
REBIND,
UNBIND,
ACL,
REPORT,
MKACTIVITY,
CHECKOUT,
MERGE,
MSEARCH,
NOTIFY,
SUBSCRIBE,
UNSUBSCRIBE,
MKCALENDAR,
LINK,
UNLINK,
SOURCE,
#endif
Delete = 0,
Get,
Head,
Post,
Put,
Connect,
Options,
Trace,
Patch,
Purge,
Copy,
Lock,
MkCol,
Move,
Propfind,
Proppatch,
Search,
Unlock,
Bind,
Rebind,
Unbind,
Acl,
Report,
MkActivity,
Checkout,
Merge,
MSearch,
Notify,
Subscribe,
Unsubscribe,
Mkcalendar,
Link,
Unlink,
Source,
InternalMethodCount,
// should not add an item below this line: used for array count
};
const char* method_strings[] =
{
"DELETE",
"GET",
"HEAD",
"POST",
"PUT",
"CONNECT",
"OPTIONS",
"TRACE",
"PATCH",
"PURGE",
"COPY",
"LOCK",
"MKCOL",
"MOVE",
"PROPFIND",
"PROPPATCH",
"SEARCH",
"UNLOCK",
"BIND",
"REBIND",
"UNBIND",
"ACL",
"REPORT",
"MKACTIVITY",
"CHECKOUT",
"MERGE",
"M-SEARCH",
"NOTIFY",
"SUBSCRIBE",
"UNSUBSCRIBE",
"MKCALENDAR",
"LINK",
"UNLINK",
"SOURCE"};
inline std::string method_name(HTTPMethod method)
{
if (CROW_LIKELY(method < HTTPMethod::InternalMethodCount))
{
return method_strings[(unsigned char)method];
}
return "invalid";
}
// clang-format off
enum status
{
CONTINUE = 100,
SWITCHING_PROTOCOLS = 101,
OK = 200,
CREATED = 201,
ACCEPTED = 202,
NON_AUTHORITATIVE_INFORMATION = 203,
NO_CONTENT = 204,
RESET_CONTENT = 205,
PARTIAL_CONTENT = 206,
MULTIPLE_CHOICES = 300,
MOVED_PERMANENTLY = 301,
FOUND = 302,
SEE_OTHER = 303,
NOT_MODIFIED = 304,
TEMPORARY_REDIRECT = 307,
PERMANENT_REDIRECT = 308,
BAD_REQUEST = 400,
UNAUTHORIZED = 401,
FORBIDDEN = 403,
NOT_FOUND = 404,
METHOD_NOT_ALLOWED = 405,
PROXY_AUTHENTICATION_REQUIRED = 407,
CONFLICT = 409,
GONE = 410,
PAYLOAD_TOO_LARGE = 413,
UNSUPPORTED_MEDIA_TYPE = 415,
RANGE_NOT_SATISFIABLE = 416,
EXPECTATION_FAILED = 417,
PRECONDITION_REQUIRED = 428,
TOO_MANY_REQUESTS = 429,
UNAVAILABLE_FOR_LEGAL_REASONS = 451,
INTERNAL_SERVER_ERROR = 500,
NOT_IMPLEMENTED = 501,
BAD_GATEWAY = 502,
SERVICE_UNAVAILABLE = 503,
VARIANT_ALSO_NEGOTIATES = 506
};
// clang-format on
enum class ParamType : char
{
INT,
UINT,
DOUBLE,
STRING,
PATH,
MAX
};
struct routing_params
{
std::vector<int64_t> int_params;
std::vector<uint64_t> uint_params;
std::vector<double> double_params;
std::vector<std::string> string_params;
void debug_print() const
{
std::cerr << "routing_params" << std::endl;
for (auto i : int_params)
std::cerr << i << ", ";
std::cerr << std::endl;
for (auto i : uint_params)
std::cerr << i << ", ";
std::cerr << std::endl;
for (auto i : double_params)
std::cerr << i << ", ";
std::cerr << std::endl;
for (auto& i : string_params)
std::cerr << i << ", ";
std::cerr << std::endl;
}
template<typename T>
T get(unsigned) const;
};
template<>
inline int64_t routing_params::get<int64_t>(unsigned index) const
{
return int_params[index];
}
template<>
inline uint64_t routing_params::get<uint64_t>(unsigned index) const
{
return uint_params[index];
}
template<>
inline double routing_params::get<double>(unsigned index) const
{
return double_params[index];
}
template<>
inline std::string routing_params::get<std::string>(unsigned index) const
{
return string_params[index];
}
} // namespace crow
#ifndef CROW_MSVC_WORKAROUND
constexpr crow::HTTPMethod operator"" _method(const char* str, size_t /*len*/)
{
return crow::black_magic::is_equ_p(str, "GET", 3) ? crow::HTTPMethod::Get :
crow::black_magic::is_equ_p(str, "DELETE", 6) ? crow::HTTPMethod::Delete :
crow::black_magic::is_equ_p(str, "HEAD", 4) ? crow::HTTPMethod::Head :
crow::black_magic::is_equ_p(str, "POST", 4) ? crow::HTTPMethod::Post :
crow::black_magic::is_equ_p(str, "PUT", 3) ? crow::HTTPMethod::Put :
crow::black_magic::is_equ_p(str, "OPTIONS", 7) ? crow::HTTPMethod::Options :
crow::black_magic::is_equ_p(str, "CONNECT", 7) ? crow::HTTPMethod::Connect :
crow::black_magic::is_equ_p(str, "TRACE", 5) ? crow::HTTPMethod::Trace :
crow::black_magic::is_equ_p(str, "PATCH", 5) ? crow::HTTPMethod::Patch :
crow::black_magic::is_equ_p(str, "PURGE", 5) ? crow::HTTPMethod::Purge :
crow::black_magic::is_equ_p(str, "COPY", 4) ? crow::HTTPMethod::Copy :
crow::black_magic::is_equ_p(str, "LOCK", 4) ? crow::HTTPMethod::Lock :
crow::black_magic::is_equ_p(str, "MKCOL", 5) ? crow::HTTPMethod::MkCol :
crow::black_magic::is_equ_p(str, "MOVE", 4) ? crow::HTTPMethod::Move :
crow::black_magic::is_equ_p(str, "PROPFIND", 8) ? crow::HTTPMethod::Propfind :
crow::black_magic::is_equ_p(str, "PROPPATCH", 9) ? crow::HTTPMethod::Proppatch :
crow::black_magic::is_equ_p(str, "SEARCH", 6) ? crow::HTTPMethod::Search :
crow::black_magic::is_equ_p(str, "UNLOCK", 6) ? crow::HTTPMethod::Unlock :
crow::black_magic::is_equ_p(str, "BIND", 4) ? crow::HTTPMethod::Bind :
crow::black_magic::is_equ_p(str, "REBIND", 6) ? crow::HTTPMethod::Rebind :
crow::black_magic::is_equ_p(str, "UNBIND", 6) ? crow::HTTPMethod::Unbind :
crow::black_magic::is_equ_p(str, "ACL", 3) ? crow::HTTPMethod::Acl :
crow::black_magic::is_equ_p(str, "REPORT", 6) ? crow::HTTPMethod::Report :
crow::black_magic::is_equ_p(str, "MKACTIVITY", 10) ? crow::HTTPMethod::MkActivity :
crow::black_magic::is_equ_p(str, "CHECKOUT", 8) ? crow::HTTPMethod::Checkout :
crow::black_magic::is_equ_p(str, "MERGE", 5) ? crow::HTTPMethod::Merge :
crow::black_magic::is_equ_p(str, "MSEARCH", 7) ? crow::HTTPMethod::MSearch :
crow::black_magic::is_equ_p(str, "NOTIFY", 6) ? crow::HTTPMethod::Notify :
crow::black_magic::is_equ_p(str, "SUBSCRIBE", 9) ? crow::HTTPMethod::Subscribe :
crow::black_magic::is_equ_p(str, "UNSUBSCRIBE", 11) ? crow::HTTPMethod::Unsubscribe :
crow::black_magic::is_equ_p(str, "MKCALENDAR", 10) ? crow::HTTPMethod::Mkcalendar :
crow::black_magic::is_equ_p(str, "LINK", 4) ? crow::HTTPMethod::Link :
crow::black_magic::is_equ_p(str, "UNLINK", 6) ? crow::HTTPMethod::Unlink :
crow::black_magic::is_equ_p(str, "SOURCE", 6) ? crow::HTTPMethod::Source :
throw std::runtime_error("invalid http method");
}
#endif