mirror of
https://github.com/CrowCpp/Crow.git
synced 2024-06-07 21:10:44 +00:00
4cdde73388
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
747 lines
27 KiB
C++
747 lines
27 KiB
C++
#pragma once
|
|
|
|
#include <cstdint>
|
|
#include <stdexcept>
|
|
#include <tuple>
|
|
#include <type_traits>
|
|
#include <cstring>
|
|
#include <functional>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
|
|
#include <boost/algorithm/string.hpp>
|
|
|
|
#include "crow/settings.h"
|
|
|
|
namespace crow
|
|
{
|
|
namespace black_magic
|
|
{
|
|
#ifndef CROW_MSVC_WORKAROUND
|
|
/// Out of Range Exception for const_str
|
|
struct OutOfRange
|
|
{
|
|
OutOfRange(unsigned /*pos*/, unsigned /*length*/) {}
|
|
};
|
|
/// Helper function to throw an exception if i is larger than len
|
|
constexpr unsigned requires_in_range(unsigned i, unsigned len)
|
|
{
|
|
return i >= len ? throw OutOfRange(i, len) : i;
|
|
}
|
|
|
|
/// A constant string implementation.
|
|
class const_str
|
|
{
|
|
const char* const begin_;
|
|
unsigned size_;
|
|
|
|
public:
|
|
template<unsigned N>
|
|
constexpr const_str(const char (&arr)[N]):
|
|
begin_(arr), size_(N - 1)
|
|
{
|
|
static_assert(N >= 1, "not a string literal");
|
|
}
|
|
constexpr char operator[](unsigned i) const
|
|
{
|
|
return requires_in_range(i, size_), begin_[i];
|
|
}
|
|
|
|
constexpr operator const char*() const
|
|
{
|
|
return begin_;
|
|
}
|
|
|
|
constexpr const char* begin() const { return begin_; }
|
|
constexpr const char* end() const { return begin_ + size_; }
|
|
|
|
constexpr unsigned size() const
|
|
{
|
|
return size_;
|
|
}
|
|
};
|
|
|
|
constexpr unsigned find_closing_tag(const_str s, unsigned p)
|
|
{
|
|
return s[p] == '>' ? p : find_closing_tag(s, p + 1);
|
|
}
|
|
|
|
/// Check that the CROW_ROUTE string is valid
|
|
constexpr bool is_valid(const_str s, unsigned i = 0, int f = 0)
|
|
{
|
|
return i == s.size() ? f == 0 :
|
|
f < 0 || f >= 2 ? false :
|
|
s[i] == '<' ? is_valid(s, i + 1, f + 1) :
|
|
s[i] == '>' ? is_valid(s, i + 1, f - 1) :
|
|
is_valid(s, i + 1, f);
|
|
}
|
|
|
|
constexpr bool is_equ_p(const char* a, const char* b, unsigned n)
|
|
{
|
|
return *a == 0 && *b == 0 && n == 0 ? true :
|
|
(*a == 0 || *b == 0) ? false :
|
|
n == 0 ? true :
|
|
*a != *b ? false :
|
|
is_equ_p(a + 1, b + 1, n - 1);
|
|
}
|
|
|
|
constexpr bool is_equ_n(const_str a, unsigned ai, const_str b, unsigned bi, unsigned n)
|
|
{
|
|
return ai + n > a.size() || bi + n > b.size() ? false :
|
|
n == 0 ? true :
|
|
a[ai] != b[bi] ? false :
|
|
is_equ_n(a, ai + 1, b, bi + 1, n - 1);
|
|
}
|
|
|
|
constexpr bool is_int(const_str s, unsigned i)
|
|
{
|
|
return is_equ_n(s, i, "<int>", 0, 5);
|
|
}
|
|
|
|
constexpr bool is_uint(const_str s, unsigned i)
|
|
{
|
|
return is_equ_n(s, i, "<uint>", 0, 6);
|
|
}
|
|
|
|
constexpr bool is_float(const_str s, unsigned i)
|
|
{
|
|
return is_equ_n(s, i, "<float>", 0, 7) ||
|
|
is_equ_n(s, i, "<double>", 0, 8);
|
|
}
|
|
|
|
constexpr bool is_str(const_str s, unsigned i)
|
|
{
|
|
return is_equ_n(s, i, "<str>", 0, 5) ||
|
|
is_equ_n(s, i, "<string>", 0, 8);
|
|
}
|
|
|
|
constexpr bool is_path(const_str s, unsigned i)
|
|
{
|
|
return is_equ_n(s, i, "<path>", 0, 6);
|
|
}
|
|
#endif
|
|
template<typename T>
|
|
struct parameter_tag
|
|
{
|
|
static const int value = 0;
|
|
};
|
|
#define CROW_INTERNAL_PARAMETER_TAG(t, i) \
|
|
template<> \
|
|
struct parameter_tag<t> \
|
|
{ \
|
|
static const int value = i; \
|
|
}
|
|
CROW_INTERNAL_PARAMETER_TAG(int, 1);
|
|
CROW_INTERNAL_PARAMETER_TAG(char, 1);
|
|
CROW_INTERNAL_PARAMETER_TAG(short, 1);
|
|
CROW_INTERNAL_PARAMETER_TAG(long, 1);
|
|
CROW_INTERNAL_PARAMETER_TAG(long long, 1);
|
|
CROW_INTERNAL_PARAMETER_TAG(unsigned int, 2);
|
|
CROW_INTERNAL_PARAMETER_TAG(unsigned char, 2);
|
|
CROW_INTERNAL_PARAMETER_TAG(unsigned short, 2);
|
|
CROW_INTERNAL_PARAMETER_TAG(unsigned long, 2);
|
|
CROW_INTERNAL_PARAMETER_TAG(unsigned long long, 2);
|
|
CROW_INTERNAL_PARAMETER_TAG(double, 3);
|
|
CROW_INTERNAL_PARAMETER_TAG(std::string, 4);
|
|
#undef CROW_INTERNAL_PARAMETER_TAG
|
|
template<typename... Args>
|
|
struct compute_parameter_tag_from_args_list;
|
|
|
|
template<>
|
|
struct compute_parameter_tag_from_args_list<>
|
|
{
|
|
static const int value = 0;
|
|
};
|
|
|
|
template<typename Arg, typename... Args>
|
|
struct compute_parameter_tag_from_args_list<Arg, Args...>
|
|
{
|
|
static const int sub_value =
|
|
compute_parameter_tag_from_args_list<Args...>::value;
|
|
static const int value =
|
|
parameter_tag<typename std::decay<Arg>::type>::value ? sub_value * 6 + parameter_tag<typename std::decay<Arg>::type>::value : sub_value;
|
|
};
|
|
|
|
static inline bool is_parameter_tag_compatible(uint64_t a, uint64_t b)
|
|
{
|
|
if (a == 0)
|
|
return b == 0;
|
|
if (b == 0)
|
|
return a == 0;
|
|
int sa = a % 6;
|
|
int sb = a % 6;
|
|
if (sa == 5) sa = 4;
|
|
if (sb == 5) sb = 4;
|
|
if (sa != sb)
|
|
return false;
|
|
return is_parameter_tag_compatible(a / 6, b / 6);
|
|
}
|
|
|
|
static inline unsigned find_closing_tag_runtime(const char* s, unsigned p)
|
|
{
|
|
return s[p] == 0 ? throw std::runtime_error("unmatched tag <") :
|
|
s[p] == '>' ? p :
|
|
find_closing_tag_runtime(s, p + 1);
|
|
}
|
|
|
|
static inline uint64_t get_parameter_tag_runtime(const char* s, unsigned p = 0)
|
|
{
|
|
return s[p] == 0 ? 0 :
|
|
s[p] == '<' ? (
|
|
std::strncmp(s + p, "<int>", 5) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 1 :
|
|
std::strncmp(s + p, "<uint>", 6) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 2 :
|
|
(std::strncmp(s + p, "<float>", 7) == 0 ||
|
|
std::strncmp(s + p, "<double>", 8) == 0) ?
|
|
get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 3 :
|
|
(std::strncmp(s + p, "<str>", 5) == 0 ||
|
|
std::strncmp(s + p, "<string>", 8) == 0) ?
|
|
get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 4 :
|
|
std::strncmp(s + p, "<path>", 6) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 5 :
|
|
throw std::runtime_error("invalid parameter type")) :
|
|
get_parameter_tag_runtime(s, p + 1);
|
|
}
|
|
#ifndef CROW_MSVC_WORKAROUND
|
|
constexpr uint64_t get_parameter_tag(const_str s, unsigned p = 0)
|
|
{
|
|
return p == s.size() ? 0 :
|
|
s[p] == '<' ? (
|
|
is_int(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 1 :
|
|
is_uint(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 2 :
|
|
is_float(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 3 :
|
|
is_str(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 4 :
|
|
is_path(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 5 :
|
|
throw std::runtime_error("invalid parameter type")) :
|
|
get_parameter_tag(s, p + 1);
|
|
}
|
|
#endif
|
|
|
|
template<typename... T>
|
|
struct S
|
|
{
|
|
template<typename U>
|
|
using push = S<U, T...>;
|
|
template<typename U>
|
|
using push_back = S<T..., U>;
|
|
template<template<typename... Args> class U>
|
|
using rebind = U<T...>;
|
|
};
|
|
template<typename F, typename Set>
|
|
struct CallHelper;
|
|
template<typename F, typename... Args>
|
|
struct CallHelper<F, S<Args...>>
|
|
{
|
|
template<typename F1, typename... Args1, typename = decltype(std::declval<F1>()(std::declval<Args1>()...))>
|
|
static char __test(int);
|
|
|
|
template<typename...>
|
|
static int __test(...);
|
|
|
|
static constexpr bool value = sizeof(__test<F, Args...>(0)) == sizeof(char);
|
|
};
|
|
|
|
|
|
template<int N>
|
|
struct single_tag_to_type
|
|
{};
|
|
|
|
template<>
|
|
struct single_tag_to_type<1>
|
|
{
|
|
using type = int64_t;
|
|
};
|
|
|
|
template<>
|
|
struct single_tag_to_type<2>
|
|
{
|
|
using type = uint64_t;
|
|
};
|
|
|
|
template<>
|
|
struct single_tag_to_type<3>
|
|
{
|
|
using type = double;
|
|
};
|
|
|
|
template<>
|
|
struct single_tag_to_type<4>
|
|
{
|
|
using type = std::string;
|
|
};
|
|
|
|
template<>
|
|
struct single_tag_to_type<5>
|
|
{
|
|
using type = std::string;
|
|
};
|
|
|
|
|
|
template<uint64_t Tag>
|
|
struct arguments
|
|
{
|
|
using subarguments = typename arguments<Tag / 6>::type;
|
|
using type =
|
|
typename subarguments::template push<typename single_tag_to_type<Tag % 6>::type>;
|
|
};
|
|
|
|
template<>
|
|
struct arguments<0>
|
|
{
|
|
using type = S<>;
|
|
};
|
|
|
|
template<typename... T>
|
|
struct last_element_type
|
|
{
|
|
using type = typename std::tuple_element<sizeof...(T) - 1, std::tuple<T...>>::type;
|
|
};
|
|
|
|
|
|
template<>
|
|
struct last_element_type<>
|
|
{};
|
|
|
|
|
|
// from http://stackoverflow.com/questions/13072359/c11-compile-time-array-with-logarithmic-evaluation-depth
|
|
template<class T>
|
|
using Invoke = typename T::type;
|
|
|
|
template<unsigned...>
|
|
struct seq
|
|
{
|
|
using type = seq;
|
|
};
|
|
|
|
template<class S1, class S2>
|
|
struct concat;
|
|
|
|
template<unsigned... I1, unsigned... I2>
|
|
struct concat<seq<I1...>, seq<I2...>> : seq<I1..., (sizeof...(I1) + I2)...>
|
|
{};
|
|
|
|
template<class S1, class S2>
|
|
using Concat = Invoke<concat<S1, S2>>;
|
|
|
|
template<unsigned N>
|
|
struct gen_seq;
|
|
template<unsigned N>
|
|
using GenSeq = Invoke<gen_seq<N>>;
|
|
|
|
template<unsigned N>
|
|
struct gen_seq : Concat<GenSeq<N / 2>, GenSeq<N - N / 2>>
|
|
{};
|
|
|
|
template<>
|
|
struct gen_seq<0> : seq<>
|
|
{};
|
|
template<>
|
|
struct gen_seq<1> : seq<0>
|
|
{};
|
|
|
|
template<typename Seq, typename Tuple>
|
|
struct pop_back_helper;
|
|
|
|
template<unsigned... N, typename Tuple>
|
|
struct pop_back_helper<seq<N...>, Tuple>
|
|
{
|
|
template<template<typename... Args> class U>
|
|
using rebind = U<typename std::tuple_element<N, Tuple>::type...>;
|
|
};
|
|
|
|
template<typename... T>
|
|
struct pop_back //: public pop_back_helper<typename gen_seq<sizeof...(T)-1>::type, std::tuple<T...>>
|
|
{
|
|
template<template<typename... Args> class U>
|
|
using rebind = typename pop_back_helper<typename gen_seq<sizeof...(T) - 1>::type, std::tuple<T...>>::template rebind<U>;
|
|
};
|
|
|
|
template<>
|
|
struct pop_back<>
|
|
{
|
|
template<template<typename... Args> class U>
|
|
using rebind = U<>;
|
|
};
|
|
|
|
// from http://stackoverflow.com/questions/2118541/check-if-c0x-parameter-pack-contains-a-type
|
|
template<typename Tp, typename... List>
|
|
struct contains : std::true_type
|
|
{};
|
|
|
|
template<typename Tp, typename Head, typename... Rest>
|
|
struct contains<Tp, Head, Rest...> : std::conditional<std::is_same<Tp, Head>::value, std::true_type, contains<Tp, Rest...>>::type
|
|
{};
|
|
|
|
template<typename Tp>
|
|
struct contains<Tp> : std::false_type
|
|
{};
|
|
|
|
template<typename T>
|
|
struct empty_context
|
|
{};
|
|
|
|
template<typename T>
|
|
struct promote
|
|
{
|
|
using type = T;
|
|
};
|
|
|
|
#define CROW_INTERNAL_PROMOTE_TYPE(t1, t2) \
|
|
template<> \
|
|
struct promote<t1> \
|
|
{ \
|
|
using type = t2; \
|
|
}
|
|
|
|
CROW_INTERNAL_PROMOTE_TYPE(char, int64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(short, int64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(int, int64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(long, int64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(long long, int64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(unsigned char, uint64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(unsigned short, uint64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(unsigned int, uint64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(unsigned long, uint64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(unsigned long long, uint64_t);
|
|
CROW_INTERNAL_PROMOTE_TYPE(float, double);
|
|
#undef CROW_INTERNAL_PROMOTE_TYPE
|
|
|
|
template<typename T>
|
|
using promote_t = typename promote<T>::type;
|
|
|
|
} // namespace black_magic
|
|
|
|
namespace detail
|
|
{
|
|
|
|
template<class T, std::size_t N, class... Args>
|
|
struct get_index_of_element_from_tuple_by_type_impl
|
|
{
|
|
static constexpr auto value = N;
|
|
};
|
|
|
|
template<class T, std::size_t N, class... Args>
|
|
struct get_index_of_element_from_tuple_by_type_impl<T, N, T, Args...>
|
|
{
|
|
static constexpr auto value = N;
|
|
};
|
|
|
|
template<class T, std::size_t N, class U, class... Args>
|
|
struct get_index_of_element_from_tuple_by_type_impl<T, N, U, Args...>
|
|
{
|
|
static constexpr auto value = get_index_of_element_from_tuple_by_type_impl<T, N + 1, Args...>::value;
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
namespace utility
|
|
{
|
|
template<class T, class... Args>
|
|
T& get_element_by_type(std::tuple<Args...>& t)
|
|
{
|
|
return std::get<detail::get_index_of_element_from_tuple_by_type_impl<T, 0, Args...>::value>(t);
|
|
}
|
|
|
|
template<typename T>
|
|
struct function_traits;
|
|
|
|
#ifndef CROW_MSVC_WORKAROUND
|
|
template<typename T>
|
|
struct function_traits : public function_traits<decltype(&T::operator())>
|
|
{
|
|
using parent_t = function_traits<decltype(&T::operator())>;
|
|
static const size_t arity = parent_t::arity;
|
|
using result_type = typename parent_t::result_type;
|
|
template<size_t i>
|
|
using arg = typename parent_t::template arg<i>;
|
|
};
|
|
#endif
|
|
|
|
template<typename ClassType, typename R, typename... Args>
|
|
struct function_traits<R (ClassType::*)(Args...) const>
|
|
{
|
|
static const size_t arity = sizeof...(Args);
|
|
|
|
typedef R result_type;
|
|
|
|
template<size_t i>
|
|
using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
|
|
};
|
|
|
|
template<typename ClassType, typename R, typename... Args>
|
|
struct function_traits<R (ClassType::*)(Args...)>
|
|
{
|
|
static const size_t arity = sizeof...(Args);
|
|
|
|
typedef R result_type;
|
|
|
|
template<size_t i>
|
|
using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
|
|
};
|
|
|
|
template<typename R, typename... Args>
|
|
struct function_traits<std::function<R(Args...)>>
|
|
{
|
|
static const size_t arity = sizeof...(Args);
|
|
|
|
typedef R result_type;
|
|
|
|
template<size_t i>
|
|
using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
|
|
};
|
|
|
|
inline static std::string base64encode(const unsigned char* data, size_t size, const char* key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")
|
|
{
|
|
std::string ret;
|
|
ret.resize((size + 2) / 3 * 4);
|
|
auto it = ret.begin();
|
|
while (size >= 3)
|
|
{
|
|
*it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
|
|
unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
|
|
*it++ = key[h | ((static_cast<unsigned char>(*data) & 0xF0) >> 4)];
|
|
h = (static_cast<unsigned char>(*data++) & 0x0F) << 2;
|
|
*it++ = key[h | ((static_cast<unsigned char>(*data) & 0xC0) >> 6)];
|
|
*it++ = key[static_cast<unsigned char>(*data++) & 0x3F];
|
|
|
|
size -= 3;
|
|
}
|
|
if (size == 1)
|
|
{
|
|
*it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
|
|
unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
|
|
*it++ = key[h];
|
|
*it++ = '=';
|
|
*it++ = '=';
|
|
}
|
|
else if (size == 2)
|
|
{
|
|
*it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
|
|
unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
|
|
*it++ = key[h | ((static_cast<unsigned char>(*data) & 0xF0) >> 4)];
|
|
h = (static_cast<unsigned char>(*data++) & 0x0F) << 2;
|
|
*it++ = key[h];
|
|
*it++ = '=';
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
inline static std::string base64encode(std::string data, size_t size, const char* key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")
|
|
{
|
|
return base64encode((const unsigned char*)data.c_str(), size, key);
|
|
}
|
|
|
|
inline static std::string base64encode_urlsafe(const unsigned char* data, size_t size)
|
|
{
|
|
return base64encode(data, size, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_");
|
|
}
|
|
|
|
inline static std::string base64encode_urlsafe(std::string data, size_t size)
|
|
{
|
|
return base64encode((const unsigned char*)data.c_str(), size, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_");
|
|
}
|
|
|
|
inline static std::string base64decode(const char* data, size_t size, bool urlsafe = false)
|
|
{
|
|
// clang-format off
|
|
std::unordered_map<char, unsigned char> key ({
|
|
{'A', 0},{'B', 1},{'C', 2},{'D', 3},{'E', 4},{'F', 5},{'G', 6},{'H', 7},{'I', 8},{'J', 9},
|
|
{'K', 10},{'L', 11},{'M', 12},{'N', 13},{'O', 14},{'P', 15},{'Q', 16},{'R', 17},{'S', 18},{'T', 19},
|
|
{'U', 20},{'V', 21},{'W', 22},{'X', 23},{'Y', 24},{'Z', 25},{'a', 26},{'b', 27},{'c', 28},{'d', 29},
|
|
{'e', 30},{'f', 31},{'g', 32},{'h', 33},{'i', 34},{'j', 35},{'k', 36},{'l', 37},{'m', 38},{'n', 39},
|
|
{'o', 40},{'p', 41},{'q', 42},{'r', 43},{'s', 44},{'t', 45},{'u', 46},{'v', 47},{'w', 48},{'x', 49},
|
|
{'y', 50},{'z', 51},{'0', 52},{'1', 53},{'2', 54},{'3', 55},{'4', 56},{'5', 57},{'6', 58},{'7', 59},
|
|
{'8', 60},{'9', 61},{urlsafe ? '-' : '+', 62},{urlsafe ? '_' : '/', 63}});
|
|
|
|
// clang-format on
|
|
|
|
// Not padded
|
|
if (size % 4 == 2) // missing last 2 characters
|
|
size = (size / 4 * 3) + 1; // Not subtracting extra characters because they're truncated in int division
|
|
else if (size % 4 == 3) // missing last character
|
|
size = (size / 4 * 3) + 2; // Not subtracting extra characters because they're truncated in int division
|
|
|
|
// Padded
|
|
else if (data[size - 2] == '=') // padded with '=='
|
|
size = (size / 4 * 3) - 2; // == padding means the last block only has 1 character instead of 3, hence the '-2'
|
|
else if (data[size - 1] == '=') // padded with '='
|
|
size = (size / 4 * 3) - 1; // = padding means the last block only has 2 character instead of 3, hence the '-1'
|
|
|
|
// Padding not needed
|
|
else
|
|
size = size / 4 * 3;
|
|
|
|
std::string ret;
|
|
ret.resize(size);
|
|
auto it = ret.begin();
|
|
|
|
// These will be used to decode 1 character at a time
|
|
unsigned char odd; // char1 and char3
|
|
unsigned char even; // char2 and char4
|
|
|
|
// Take 4 character blocks to turn into 3
|
|
while (size >= 3)
|
|
{
|
|
// dec_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
|
|
odd = key[*data++];
|
|
even = key[*data++];
|
|
*it++ = (odd << 2) | ((even & 0x30) >> 4);
|
|
// dec_char2 = ((char2 AND 00001111) shifted 4 bits left) OR ((char3 AND 00111100) shifted 2 bits right))
|
|
odd = key[*data++];
|
|
*it++ = ((even & 0x0F) << 4) | ((odd & 0x3C) >> 2);
|
|
// dec_char3 = ((char3 AND 00000011) shifted 6 bits left) OR (char4)
|
|
even = key[*data++];
|
|
*it++ = ((odd & 0x03) << 6) | (even);
|
|
|
|
size -= 3;
|
|
}
|
|
if (size == 2)
|
|
{
|
|
// d_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
|
|
odd = key[*data++];
|
|
even = key[*data++];
|
|
*it++ = (odd << 2) | ((even & 0x30) >> 4);
|
|
// d_char2 = ((char2 AND 00001111) shifted 4 bits left) OR ((char3 AND 00111100) shifted 2 bits right))
|
|
odd = key[*data++];
|
|
*it++ = ((even & 0x0F) << 4) | ((odd & 0x3C) >> 2);
|
|
}
|
|
else if (size == 1)
|
|
{
|
|
// d_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
|
|
odd = key[*data++];
|
|
even = key[*data++];
|
|
*it++ = (odd << 2) | ((even & 0x30) >> 4);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
inline static std::string base64decode(std::string data, size_t size, bool urlsafe = false)
|
|
{
|
|
return base64decode(data.c_str(), size, urlsafe);
|
|
}
|
|
|
|
inline static void sanitize_filename(std::string& data, char replacement = '_')
|
|
{
|
|
unsigned char i = 0, length_limit;
|
|
|
|
length_limit = data.length() < 255 ? data.length() : 255;
|
|
data = data.substr(0, length_limit);
|
|
|
|
for (; i < length_limit; i++)
|
|
{
|
|
switch ((unsigned char)data[i])
|
|
{
|
|
// WARNING While I can't see how using '\' or '/' would cause a problem, it still warrants an investigation
|
|
//case '/':
|
|
case '?':
|
|
case '<':
|
|
case '>':
|
|
//case '\\':
|
|
case ':':
|
|
case '*':
|
|
case '|':
|
|
case '\"':
|
|
|
|
case 0x00:
|
|
case 0x01:
|
|
case 0x02:
|
|
case 0x03:
|
|
case 0x04:
|
|
case 0x05:
|
|
case 0x06:
|
|
case 0x07:
|
|
case 0x08:
|
|
case 0x09:
|
|
case 0x0a:
|
|
case 0x0b:
|
|
case 0x0c:
|
|
case 0x0d:
|
|
case 0x0e:
|
|
case 0x0f:
|
|
case 0x10:
|
|
case 0x11:
|
|
case 0x12:
|
|
case 0x13:
|
|
case 0x14:
|
|
case 0x15:
|
|
case 0x16:
|
|
case 0x17:
|
|
case 0x18:
|
|
case 0x19:
|
|
case 0x1a:
|
|
case 0x1b:
|
|
case 0x1c:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
case 0x1f:
|
|
|
|
case 0x80:
|
|
case 0x81:
|
|
case 0x82:
|
|
case 0x83:
|
|
case 0x84:
|
|
case 0x85:
|
|
case 0x86:
|
|
case 0x87:
|
|
case 0x88:
|
|
case 0x89:
|
|
case 0x8a:
|
|
case 0x8b:
|
|
case 0x8c:
|
|
case 0x8d:
|
|
case 0x8e:
|
|
case 0x8f:
|
|
case 0x90:
|
|
case 0x91:
|
|
case 0x92:
|
|
case 0x93:
|
|
case 0x94:
|
|
case 0x95:
|
|
case 0x96:
|
|
case 0x97:
|
|
case 0x98:
|
|
case 0x99:
|
|
case 0x9a:
|
|
case 0x9b:
|
|
case 0x9c:
|
|
case 0x9d:
|
|
case 0x9e:
|
|
case 0x9f:
|
|
|
|
data[i] = replacement;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
std::string str_replacement(1, replacement);
|
|
|
|
boost::ireplace_all(data, "..", str_replacement);
|
|
|
|
boost::ireplace_all(data, "CON", str_replacement);
|
|
boost::ireplace_all(data, "PRN", str_replacement);
|
|
boost::ireplace_all(data, "AUX", str_replacement);
|
|
boost::ireplace_all(data, "NUL", str_replacement);
|
|
boost::ireplace_all(data, "COM1", str_replacement);
|
|
boost::ireplace_all(data, "COM2", str_replacement);
|
|
boost::ireplace_all(data, "COM3", str_replacement);
|
|
boost::ireplace_all(data, "COM4", str_replacement);
|
|
boost::ireplace_all(data, "COM5", str_replacement);
|
|
boost::ireplace_all(data, "COM6", str_replacement);
|
|
boost::ireplace_all(data, "COM7", str_replacement);
|
|
boost::ireplace_all(data, "COM8", str_replacement);
|
|
boost::ireplace_all(data, "COM9", str_replacement);
|
|
boost::ireplace_all(data, "LPT1", str_replacement);
|
|
boost::ireplace_all(data, "LPT2", str_replacement);
|
|
boost::ireplace_all(data, "LPT3", str_replacement);
|
|
boost::ireplace_all(data, "LPT4", str_replacement);
|
|
boost::ireplace_all(data, "LPT5", str_replacement);
|
|
boost::ireplace_all(data, "LPT6", str_replacement);
|
|
boost::ireplace_all(data, "LPT7", str_replacement);
|
|
boost::ireplace_all(data, "LPT8", str_replacement);
|
|
boost::ireplace_all(data, "LPT9", str_replacement);
|
|
|
|
}
|
|
|
|
} // namespace utility
|
|
} // namespace crow
|