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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2022 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #include <boost/http_proto/file_stdio.hpp> | ||
| 11 | #include <boost/http_proto/error.hpp> | ||
| 12 | #include "detail/win32_unicode_path.hpp" | ||
| 13 | #include <boost/system/errc.hpp> | ||
| 14 | #include <boost/config/workaround.hpp> | ||
| 15 | #include <boost/core/exchange.hpp> | ||
| 16 | #include <limits> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace http_proto { | ||
| 20 | |||
| 21 | 23 | file_stdio:: | |
| 22 | 23 | ~file_stdio() | |
| 23 | { | ||
| 24 |
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23 | if(f_) |
| 25 | 11 | fclose(f_); | |
| 26 | 23 | } | |
| 27 | |||
| 28 | 1 | file_stdio:: | |
| 29 | file_stdio( | ||
| 30 | 1 | file_stdio&& other) noexcept | |
| 31 | 1 | : f_(boost::exchange(other.f_, nullptr)) | |
| 32 | { | ||
| 33 | 1 | } | |
| 34 | |||
| 35 | file_stdio& | ||
| 36 | 3 | file_stdio:: | |
| 37 | operator=( | ||
| 38 | file_stdio&& other) noexcept | ||
| 39 | { | ||
| 40 |
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3 | if(&other == this) |
| 41 | 1 | return *this; | |
| 42 |
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2 | if(f_) |
| 43 | 1 | fclose(f_); | |
| 44 | 2 | f_ = other.f_; | |
| 45 | 2 | other.f_ = nullptr; | |
| 46 | 2 | return *this; | |
| 47 | } | ||
| 48 | |||
| 49 | void | ||
| 50 | 1 | file_stdio:: | |
| 51 | native_handle(std::FILE* f) | ||
| 52 | { | ||
| 53 |
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1 | if(f_) |
| 54 | 1 | fclose(f_); | |
| 55 | 1 | f_ = f; | |
| 56 | 1 | } | |
| 57 | |||
| 58 | void | ||
| 59 | 4 | file_stdio:: | |
| 60 | close( | ||
| 61 | system::error_code& ec) | ||
| 62 | { | ||
| 63 |
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4 | if(f_) |
| 64 | { | ||
| 65 | 4 | int failed = fclose(f_); | |
| 66 | 4 | f_ = nullptr; | |
| 67 |
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4 | if(failed) |
| 68 | { | ||
| 69 | ✗ | ec.assign(errno, | |
| 70 | system::generic_category()); | ||
| 71 | ✗ | return; | |
| 72 | } | ||
| 73 | } | ||
| 74 | 4 | ec = {}; | |
| 75 | } | ||
| 76 | |||
| 77 | void | ||
| 78 | 21 | file_stdio:: | |
| 79 | open(char const* path, file_mode mode, | ||
| 80 | system::error_code& ec) | ||
| 81 | { | ||
| 82 |
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21 | if(f_) |
| 83 | { | ||
| 84 | 1 | fclose(f_); | |
| 85 | 1 | f_ = nullptr; | |
| 86 | } | ||
| 87 | 21 | ec = {}; | |
| 88 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 89 | boost::winapi::WCHAR_ const* s; | ||
| 90 | detail::win32_unicode_path unicode_path(path, ec); | ||
| 91 | if (ec) | ||
| 92 | return; | ||
| 93 | #else | ||
| 94 | char const* s; | ||
| 95 | #endif | ||
| 96 |
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21 | switch(mode) |
| 97 | { | ||
| 98 | 2 | default: | |
| 99 | case file_mode::read: | ||
| 100 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 101 | s = L"rb"; | ||
| 102 | #else | ||
| 103 | 2 | s = "rb"; | |
| 104 | #endif | ||
| 105 | 2 | break; | |
| 106 | |||
| 107 | 1 | case file_mode::scan: | |
| 108 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 109 | s = L"rbS"; | ||
| 110 | #else | ||
| 111 | 1 | s = "rb"; | |
| 112 | #endif | ||
| 113 | 1 | break; | |
| 114 | |||
| 115 | 10 | case file_mode::write: | |
| 116 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 117 | s = L"wb+"; | ||
| 118 | #else | ||
| 119 | 10 | s = "wb+"; | |
| 120 | #endif | ||
| 121 | 10 | break; | |
| 122 | |||
| 123 | 2 | case file_mode::write_new: | |
| 124 | { | ||
| 125 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 126 | # if (defined(BOOST_MSVC) && BOOST_MSVC >= 1910) || (defined(_MSVC_STL_VERSION) && _MSVC_STL_VERSION >= 141) | ||
| 127 | s = L"wbx"; | ||
| 128 | # else | ||
| 129 | std::FILE* f0; | ||
| 130 | auto const ev = ::_wfopen_s(&f0, unicode_path.c_str(), L"rb"); | ||
| 131 | if(! ev) | ||
| 132 | { | ||
| 133 | std::fclose(f0); | ||
| 134 | ec = make_error_code( | ||
| 135 | system::errc::file_exists); | ||
| 136 | return; | ||
| 137 | } | ||
| 138 | else if(ev != | ||
| 139 | system::errc::no_such_file_or_directory) | ||
| 140 | { | ||
| 141 | ec.assign(ev, | ||
| 142 | system::generic_category()); | ||
| 143 | return; | ||
| 144 | } | ||
| 145 | s = L"wb"; | ||
| 146 | # endif | ||
| 147 | #else | ||
| 148 | 2 | s = "wbx"; | |
| 149 | #endif | ||
| 150 | 2 | break; | |
| 151 | } | ||
| 152 | |||
| 153 | 2 | case file_mode::write_existing: | |
| 154 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 155 | s = L"rb+"; | ||
| 156 | #else | ||
| 157 | 2 | s = "rb+"; | |
| 158 | #endif | ||
| 159 | 2 | break; | |
| 160 | |||
| 161 | 2 | case file_mode::append: | |
| 162 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 163 | s = L"ab"; | ||
| 164 | #else | ||
| 165 | 2 | s = "ab"; | |
| 166 | #endif | ||
| 167 | 2 | break; | |
| 168 | |||
| 169 | 2 | case file_mode::append_existing: | |
| 170 | { | ||
| 171 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 172 | std::FILE* f0; | ||
| 173 | auto const ev = | ||
| 174 | ::_wfopen_s(&f0, unicode_path.c_str(), L"rb+"); | ||
| 175 | if(ev) | ||
| 176 | { | ||
| 177 | ec.assign(ev, | ||
| 178 | system::generic_category()); | ||
| 179 | return; | ||
| 180 | } | ||
| 181 | #else | ||
| 182 | auto const f0 = | ||
| 183 | 2 | std::fopen(path, "rb+"); | |
| 184 |
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2 | if(! f0) |
| 185 | { | ||
| 186 | 1 | ec.assign(errno, | |
| 187 | system::generic_category()); | ||
| 188 | 1 | return; | |
| 189 | } | ||
| 190 | #endif | ||
| 191 | 1 | std::fclose(f0); | |
| 192 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 193 | s = L"ab"; | ||
| 194 | #else | ||
| 195 | 1 | s = "ab"; | |
| 196 | #endif | ||
| 197 | 1 | break; | |
| 198 | } | ||
| 199 | } | ||
| 200 | |||
| 201 | #if defined(BOOST_MSVC) || defined(_MSVC_STL_VERSION) | ||
| 202 | auto const ev = ::_wfopen_s( | ||
| 203 | &f_, unicode_path.c_str(), s); | ||
| 204 | if(ev) | ||
| 205 | { | ||
| 206 | f_ = nullptr; | ||
| 207 | ec.assign(ev, | ||
| 208 | system::generic_category()); | ||
| 209 | return; | ||
| 210 | } | ||
| 211 | #else | ||
| 212 | 20 | f_ = std::fopen(path, s); | |
| 213 |
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20 | if(! f_) |
| 214 | { | ||
| 215 | 2 | ec.assign(errno, | |
| 216 | system::generic_category()); | ||
| 217 | 2 | return; | |
| 218 | } | ||
| 219 | #endif | ||
| 220 | } | ||
| 221 | |||
| 222 | std::uint64_t | ||
| 223 | 2 | file_stdio:: | |
| 224 | size( | ||
| 225 | system::error_code& ec) const | ||
| 226 | { | ||
| 227 |
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2 | if(! f_) |
| 228 | { | ||
| 229 | ec = make_error_code( | ||
| 230 | 1 | system::errc::bad_file_descriptor); | |
| 231 | 1 | return 0; | |
| 232 | } | ||
| 233 | 1 | long pos = std::ftell(f_); | |
| 234 |
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1 | if(pos == -1L) |
| 235 | { | ||
| 236 | ✗ | ec.assign(errno, | |
| 237 | system::generic_category()); | ||
| 238 | ✗ | return 0; | |
| 239 | } | ||
| 240 | 1 | int result = std::fseek(f_, 0, SEEK_END); | |
| 241 |
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1 | if(result != 0) |
| 242 | { | ||
| 243 | ✗ | ec.assign(errno, | |
| 244 | system::generic_category()); | ||
| 245 | ✗ | return 0; | |
| 246 | } | ||
| 247 | 1 | long size = std::ftell(f_); | |
| 248 |
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1 | if(size == -1L) |
| 249 | { | ||
| 250 | ✗ | ec.assign(errno, | |
| 251 | system::generic_category()); | ||
| 252 | ✗ | std::fseek(f_, pos, SEEK_SET); | |
| 253 | ✗ | return 0; | |
| 254 | } | ||
| 255 | 1 | result = std::fseek(f_, pos, SEEK_SET); | |
| 256 |
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1 | if(result != 0) |
| 257 | ✗ | ec.assign(errno, | |
| 258 | system::generic_category()); | ||
| 259 | else | ||
| 260 | 1 | ec = {}; | |
| 261 | 1 | return size; | |
| 262 | } | ||
| 263 | |||
| 264 | std::uint64_t | ||
| 265 | 3 | file_stdio:: | |
| 266 | pos( | ||
| 267 | system::error_code& ec) const | ||
| 268 | { | ||
| 269 |
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3 | if(! f_) |
| 270 | { | ||
| 271 | ec = make_error_code( | ||
| 272 | 1 | system::errc::bad_file_descriptor); | |
| 273 | 1 | return 0; | |
| 274 | } | ||
| 275 | 2 | long pos = std::ftell(f_); | |
| 276 |
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2 | if(pos == -1L) |
| 277 | { | ||
| 278 | ✗ | ec.assign(errno, | |
| 279 | system::generic_category()); | ||
| 280 | ✗ | return 0; | |
| 281 | } | ||
| 282 | 2 | ec = {}; | |
| 283 | 2 | return pos; | |
| 284 | } | ||
| 285 | |||
| 286 | void | ||
| 287 | 2 | file_stdio:: | |
| 288 | seek(std::uint64_t offset, | ||
| 289 | system::error_code& ec) | ||
| 290 | { | ||
| 291 |
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2 | if(! f_) |
| 292 | { | ||
| 293 | ec = make_error_code( | ||
| 294 | 1 | system::errc::bad_file_descriptor); | |
| 295 | 1 | return; | |
| 296 | } | ||
| 297 |
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1 | if(offset > static_cast<std::uint64_t>((std::numeric_limits<long>::max)())) |
| 298 | { | ||
| 299 | ec = make_error_code( | ||
| 300 | ✗ | system::errc::invalid_seek); | |
| 301 | ✗ | return; | |
| 302 | } | ||
| 303 | 1 | int result = std::fseek(f_, | |
| 304 | static_cast<long>(offset), SEEK_SET); | ||
| 305 |
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1 | if(result != 0) |
| 306 | ✗ | ec.assign(errno, | |
| 307 | system::generic_category()); | ||
| 308 | else | ||
| 309 | 1 | ec = {}; | |
| 310 | } | ||
| 311 | |||
| 312 | std::size_t | ||
| 313 | 3 | file_stdio:: | |
| 314 | read(void* buffer, std::size_t n, | ||
| 315 | system::error_code& ec) const | ||
| 316 | { | ||
| 317 |
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3 | if(! f_) |
| 318 | { | ||
| 319 | ec = make_error_code( | ||
| 320 | 1 | system::errc::bad_file_descriptor); | |
| 321 | 1 | return 0; | |
| 322 | } | ||
| 323 | 2 | auto nread = std::fread(buffer, 1, n, f_); | |
| 324 |
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2 | if(std::ferror(f_)) |
| 325 | { | ||
| 326 | ✗ | ec.assign(errno, | |
| 327 | system::generic_category()); | ||
| 328 | ✗ | return 0; | |
| 329 | } | ||
| 330 | 2 | return nread; | |
| 331 | } | ||
| 332 | |||
| 333 | std::size_t | ||
| 334 | 5 | file_stdio:: | |
| 335 | write(void const* buffer, std::size_t n, | ||
| 336 | system::error_code& ec) | ||
| 337 | { | ||
| 338 |
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5 | if(! f_) |
| 339 | { | ||
| 340 | ec = make_error_code( | ||
| 341 | 1 | system::errc::bad_file_descriptor); | |
| 342 | 1 | return 0; | |
| 343 | } | ||
| 344 | 4 | auto nwritten = std::fwrite(buffer, 1, n, f_); | |
| 345 |
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4 | if(std::ferror(f_)) |
| 346 | { | ||
| 347 | ✗ | ec.assign(errno, | |
| 348 | system::generic_category()); | ||
| 349 | ✗ | return 0; | |
| 350 | } | ||
| 351 | 4 | return nwritten; | |
| 352 | } | ||
| 353 | |||
| 354 | } // http_proto | ||
| 355 | } // boost | ||
| 356 |