| 1 | /* Copyright (C) 2018-2020 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (vfs_implementation_uwp.cpp). |
| 5 | * --------------------------------------------------------------------------------------- |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation the rights to |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <retro_environment.h> |
| 24 | |
| 25 | #include <ppl.h> |
| 26 | #include <ppltasks.h> |
| 27 | #include <stdio.h> |
| 28 | #include <wrl.h> |
| 29 | #include <wrl/implements.h> |
| 30 | #include <robuffer.h> |
| 31 | #include <collection.h> |
| 32 | #include <functional> |
| 33 | #include <fileapifromapp.h> |
| 34 | #include <AclAPI.h> |
| 35 | #include <sddl.h> |
| 36 | #include <io.h> |
| 37 | #include <fcntl.h> |
| 38 | |
| 39 | #ifdef RARCH_INTERNAL |
| 40 | #ifndef VFS_FRONTEND |
| 41 | #define VFS_FRONTEND |
| 42 | #endif |
| 43 | #endif |
| 44 | |
| 45 | #include <vfs/vfs.h> |
| 46 | #include <vfs/vfs_implementation.h> |
| 47 | #include <libretro.h> |
| 48 | #include <encodings/utf.h> |
| 49 | #include <retro_miscellaneous.h> |
| 50 | #include <file/file_path.h> |
| 51 | #include <string/stdstring.h> |
| 52 | #include <retro_environment.h> |
| 53 | #include <uwp/uwp_async.h> |
| 54 | #include <uwp/std_filesystem_compat.h> |
| 55 | |
| 56 | namespace |
| 57 | { |
| 58 | /* UWP deals with paths containing / instead of |
| 59 | * \ way worse than normal Windows */ |
| 60 | /* and RetroArch may sometimes mix them |
| 61 | * (e.g. on archive extraction) */ |
| 62 | static void windowsize_path(wchar_t* path) |
| 63 | { |
| 64 | if (path) |
| 65 | { |
| 66 | while (*path) |
| 67 | { |
| 68 | if (*path == '/') |
| 69 | *path = '\\'; |
| 70 | ++path; |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | #ifdef VFS_FRONTEND |
| 77 | struct retro_vfs_file_handle |
| 78 | #else |
| 79 | struct libretro_vfs_implementation_file |
| 80 | #endif |
| 81 | { |
| 82 | int64_t size; |
| 83 | uint64_t mappos; |
| 84 | uint64_t mapsize; |
| 85 | FILE* fp; |
| 86 | HANDLE fh; |
| 87 | char* buf; |
| 88 | char* orig_path; |
| 89 | uint8_t* mapped; |
| 90 | int fd; |
| 91 | unsigned hints; |
| 92 | enum vfs_scheme scheme; |
| 93 | }; |
| 94 | |
| 95 | #define RFILE_HINT_UNBUFFERED (1 << 8) |
| 96 | |
| 97 | int retro_vfs_file_close_impl(libretro_vfs_implementation_file* stream) |
| 98 | { |
| 99 | if (!stream) |
| 100 | return -1; |
| 101 | |
| 102 | if (stream->fp) |
| 103 | fclose(stream->fp); |
| 104 | |
| 105 | if (stream->buf != NULL) |
| 106 | { |
| 107 | free(stream->buf); |
| 108 | stream->buf = NULL; |
| 109 | } |
| 110 | if (stream->orig_path) |
| 111 | free(stream->orig_path); |
| 112 | |
| 113 | free(stream); |
| 114 | |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | int retro_vfs_file_error_impl(libretro_vfs_implementation_file* stream) |
| 119 | { |
| 120 | return ferror(stream->fp); |
| 121 | } |
| 122 | |
| 123 | int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file* stream) |
| 124 | { |
| 125 | if (stream) |
| 126 | return stream->size; |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file* stream, int64_t length) |
| 131 | { |
| 132 | if (stream && _chsize(_fileno(stream->fp), length) == 0) |
| 133 | return 0; |
| 134 | return -1; |
| 135 | } |
| 136 | |
| 137 | int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file* stream) |
| 138 | { |
| 139 | if (!stream) |
| 140 | return -1; |
| 141 | |
| 142 | if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) |
| 143 | return _ftelli64(stream->fp); |
| 144 | if (lseek(stream->fd, 0, SEEK_CUR) < 0) |
| 145 | return -1; |
| 146 | |
| 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | int64_t retro_vfs_file_seek_internal( |
| 151 | libretro_vfs_implementation_file* stream, |
| 152 | int64_t offset, int whence) |
| 153 | { |
| 154 | if (!stream) |
| 155 | return -1; |
| 156 | |
| 157 | if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) |
| 158 | return _fseeki64(stream->fp, offset, whence); |
| 159 | if (lseek(stream->fd, (off_t)offset, whence) < 0) |
| 160 | return -1; |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file* stream, |
| 166 | int64_t offset, int seek_position) |
| 167 | { |
| 168 | return retro_vfs_file_seek_internal(stream, offset, seek_position); |
| 169 | } |
| 170 | |
| 171 | int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file* stream, |
| 172 | void* s, uint64_t len) |
| 173 | { |
| 174 | if (!stream || (!stream->fp && stream->fh == INVALID_HANDLE_VALUE) || !s) |
| 175 | return -1; |
| 176 | |
| 177 | if (stream->fh != INVALID_HANDLE_VALUE) |
| 178 | { |
| 179 | DWORD _bytes_read; |
| 180 | ReadFile(stream->fh, (char*)s, len, &_bytes_read, NULL); |
| 181 | return (int64_t)_bytes_read; |
| 182 | } |
| 183 | |
| 184 | if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) |
| 185 | return fread(s, 1, (size_t)len, stream->fp); |
| 186 | return read(stream->fd, s, (size_t)len); |
| 187 | } |
| 188 | |
| 189 | |
| 190 | int64_t retro_vfs_file_write_impl(libretro_vfs_implementation_file* stream, const void* s, uint64_t len) |
| 191 | { |
| 192 | if (!stream || (!stream->fp && stream->fh == INVALID_HANDLE_VALUE) || !s) |
| 193 | return -1; |
| 194 | |
| 195 | if (stream->fh != INVALID_HANDLE_VALUE) |
| 196 | { |
| 197 | DWORD bytes_written; |
| 198 | WriteFile(stream->fh, s, len, &bytes_written, NULL); |
| 199 | return (int64_t)bytes_written; |
| 200 | } |
| 201 | |
| 202 | if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) |
| 203 | return fwrite(s, 1, (size_t)len, stream->fp); |
| 204 | |
| 205 | return write(stream->fd, s, (size_t)len); |
| 206 | } |
| 207 | |
| 208 | int retro_vfs_file_flush_impl(libretro_vfs_implementation_file* stream) |
| 209 | { |
| 210 | if (stream && fflush(stream->fp) == 0) |
| 211 | return 0; |
| 212 | return -1; |
| 213 | } |
| 214 | |
| 215 | int retro_vfs_file_remove_impl(const char *path) |
| 216 | { |
| 217 | BOOL result; |
| 218 | wchar_t *path_wide; |
| 219 | |
| 220 | if (!path || !*path) |
| 221 | return -1; |
| 222 | |
| 223 | path_wide = utf8_to_utf16_string_alloc(path); |
| 224 | windowsize_path(path_wide); |
| 225 | |
| 226 | /* Try Win32 first, this should work in AppData */ |
| 227 | result = DeleteFileFromAppW(path_wide); |
| 228 | free(path_wide); |
| 229 | if (result) |
| 230 | return 0; |
| 231 | |
| 232 | return -1; |
| 233 | } |
| 234 | |
| 235 | libretro_vfs_implementation_file* retro_vfs_file_open_impl( |
| 236 | const char* path, unsigned mode, unsigned hints) |
| 237 | { |
| 238 | HANDLE file_handle; |
| 239 | std::wstring path_wstring; |
| 240 | DWORD desireAccess; |
| 241 | DWORD creationDisposition; |
| 242 | wchar_t *path_wide = NULL; |
| 243 | int flags = 0; |
| 244 | const char *mode_str = NULL; |
| 245 | libretro_vfs_implementation_file* stream = |
| 246 | (libretro_vfs_implementation_file*) |
| 247 | malloc(sizeof(*stream)); |
| 248 | |
| 249 | if (!stream) |
| 250 | return NULL; |
| 251 | |
| 252 | stream->fd = 0; |
| 253 | stream->hints = hints; |
| 254 | stream->size = 0; |
| 255 | stream->buf = NULL; |
| 256 | stream->fp = NULL; |
| 257 | stream->fh = 0; |
| 258 | stream->orig_path = NULL; |
| 259 | stream->mappos = 0; |
| 260 | stream->mapsize = 0; |
| 261 | stream->mapped = NULL; |
| 262 | stream->scheme = VFS_SCHEME_NONE; |
| 263 | |
| 264 | #ifdef VFS_FRONTEND |
| 265 | if ( path |
| 266 | && path[0] == 'v' |
| 267 | && path[1] == 'f' |
| 268 | && path[2] == 's' |
| 269 | && path[3] == 'o' |
| 270 | && path[4] == 'n' |
| 271 | && path[5] == 'l' |
| 272 | && path[6] == 'y' |
| 273 | && path[7] == ':' |
| 274 | && path[8] == '/' |
| 275 | && path[9] == '/') |
| 276 | path += sizeof("vfsonly://")-1; |
| 277 | #endif |
| 278 | |
| 279 | path_wide = utf8_to_utf16_string_alloc(path); |
| 280 | windowsize_path(path_wide); |
| 281 | path_wstring = path_wide; |
| 282 | free(path_wide); |
| 283 | |
| 284 | for (;;) |
| 285 | { |
| 286 | size_t p = path_wstring.find(L"\\\\"); |
| 287 | if (p == std::wstring::npos) |
| 288 | break; |
| 289 | path_wstring.replace(p, 2, L"\\"); |
| 290 | } |
| 291 | |
| 292 | path_wstring = L"\\\\?\\" + path_wstring; |
| 293 | stream->orig_path = strdup(path); |
| 294 | |
| 295 | stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS; |
| 296 | |
| 297 | switch (mode) |
| 298 | { |
| 299 | case RETRO_VFS_FILE_ACCESS_READ: |
| 300 | mode_str = "rb"; |
| 301 | flags = O_RDONLY | O_BINARY; |
| 302 | break; |
| 303 | |
| 304 | case RETRO_VFS_FILE_ACCESS_WRITE: |
| 305 | mode_str = "wb"; |
| 306 | flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY; |
| 307 | break; |
| 308 | |
| 309 | case RETRO_VFS_FILE_ACCESS_READ_WRITE: |
| 310 | mode_str = "w+b"; |
| 311 | flags = O_RDWR | O_CREAT | O_TRUNC | O_BINARY; |
| 312 | break; |
| 313 | |
| 314 | case RETRO_VFS_FILE_ACCESS_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING: |
| 315 | case RETRO_VFS_FILE_ACCESS_READ_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING: |
| 316 | mode_str = "r+b"; |
| 317 | flags = O_RDWR | O_BINARY; |
| 318 | break; |
| 319 | |
| 320 | default: |
| 321 | goto error; |
| 322 | } |
| 323 | |
| 324 | switch (mode) |
| 325 | { |
| 326 | case RETRO_VFS_FILE_ACCESS_READ_WRITE: |
| 327 | desireAccess = GENERIC_READ | GENERIC_WRITE; |
| 328 | break; |
| 329 | case RETRO_VFS_FILE_ACCESS_WRITE: |
| 330 | desireAccess = GENERIC_WRITE; |
| 331 | break; |
| 332 | case RETRO_VFS_FILE_ACCESS_READ: |
| 333 | desireAccess = GENERIC_READ; |
| 334 | break; |
| 335 | } |
| 336 | if (mode == RETRO_VFS_FILE_ACCESS_READ) |
| 337 | creationDisposition = OPEN_EXISTING; |
| 338 | else |
| 339 | creationDisposition = (mode & RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING) != 0 |
| 340 | ? OPEN_ALWAYS |
| 341 | : CREATE_ALWAYS; |
| 342 | |
| 343 | if ((file_handle = CreateFile2FromAppW(path_wstring.data(), desireAccess, |
| 344 | FILE_SHARE_READ, creationDisposition, NULL)) == INVALID_HANDLE_VALUE) |
| 345 | goto error; |
| 346 | |
| 347 | stream->fh = file_handle; |
| 348 | if ((stream->fd = _open_osfhandle((uint64)stream->fh, flags)) == -1) |
| 349 | goto error; |
| 350 | |
| 351 | { |
| 352 | FILE *fp = _fdopen(stream->fd, mode_str); |
| 353 | |
| 354 | if (!fp) |
| 355 | goto error; |
| 356 | stream->fp = fp; |
| 357 | } |
| 358 | |
| 359 | /* Regarding setvbuf: |
| 360 | * |
| 361 | * https://www.freebsd.org/cgi/man.cgi?query=setvbuf&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html |
| 362 | * |
| 363 | * If the size argument is not zero but buf is NULL, |
| 364 | * a buffer of the given size will be allocated immediately, and |
| 365 | * released on close. This is an extension to ANSI C. |
| 366 | * |
| 367 | * Since C89 does not support specifying a NULL buffer |
| 368 | * with a non-zero size, we create and track our own buffer for it. |
| 369 | */ |
| 370 | /* TODO: this is only useful for a few platforms, |
| 371 | * find which and add ifdef */ |
| 372 | if (stream->scheme != VFS_SCHEME_CDROM) |
| 373 | { |
| 374 | stream->buf = (char*)calloc(1, 0x4000); |
| 375 | if (stream->fp) |
| 376 | setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000); |
| 377 | } |
| 378 | |
| 379 | retro_vfs_file_seek_internal(stream, 0, SEEK_SET); |
| 380 | retro_vfs_file_seek_internal(stream, 0, SEEK_END); |
| 381 | |
| 382 | stream->size = retro_vfs_file_tell_impl(stream); |
| 383 | |
| 384 | retro_vfs_file_seek_internal(stream, 0, SEEK_SET); |
| 385 | |
| 386 | return stream; |
| 387 | |
| 388 | error: |
| 389 | retro_vfs_file_close_impl(stream); |
| 390 | return NULL; |
| 391 | } |
| 392 | |
| 393 | static int uwp_mkdir_impl(std::experimental::filesystem::path dir) |
| 394 | { |
| 395 | /*I feel like this should create the directory recursively but the existing implementation does not so this update won't |
| 396 | *I put in the work but I just commented out the stuff you would need */ |
| 397 | WIN32_FILE_ATTRIBUTE_DATA lpFileInfo; |
| 398 | bool parent_dir_exists = false; |
| 399 | |
| 400 | if (dir.empty()) |
| 401 | return -1; |
| 402 | |
| 403 | /* Check if file attributes can be gotten successfully */ |
| 404 | if (GetFileAttributesExFromAppW(dir.parent_path().wstring().c_str(), GetFileExInfoStandard, &lpFileInfo)) |
| 405 | { |
| 406 | /* Check that the files attributes are not null or empty */ |
| 407 | if (lpFileInfo.dwFileAttributes != INVALID_FILE_ATTRIBUTES && lpFileInfo.dwFileAttributes != 0) |
| 408 | { |
| 409 | if (lpFileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| 410 | parent_dir_exists = true; |
| 411 | } |
| 412 | } |
| 413 | if (!parent_dir_exists) |
| 414 | { |
| 415 | /* Try to create parent dir */ |
| 416 | int success = uwp_mkdir_impl(dir.parent_path()); |
| 417 | if (success != 0 && success != -2) |
| 418 | return success; |
| 419 | } |
| 420 | |
| 421 | |
| 422 | /* Try Win32 first, this should work in AppData */ |
| 423 | if (CreateDirectoryFromAppW(dir.wstring().c_str(), NULL)) |
| 424 | return 0; |
| 425 | |
| 426 | if (GetLastError() == ERROR_ALREADY_EXISTS) |
| 427 | return -2; |
| 428 | |
| 429 | return -1; |
| 430 | } |
| 431 | |
| 432 | int retro_vfs_mkdir_impl(const char* dir) |
| 433 | { |
| 434 | return uwp_mkdir_impl(std::filesystem::path(dir)); |
| 435 | } |
| 436 | |
| 437 | /* The first run paramater is used to avoid error checking |
| 438 | * when doing recursion. |
| 439 | * Unlike the initial implementation, this can move folders |
| 440 | * even empty ones when you want to move a directory structure. |
| 441 | * |
| 442 | * This will fail even if a single file cannot be moved. |
| 443 | */ |
| 444 | static int uwp_move_path( |
| 445 | std::filesystem::path old_path, |
| 446 | std::filesystem::path new_path, |
| 447 | bool firstrun) |
| 448 | { |
| 449 | if (old_path.empty() || new_path.empty()) |
| 450 | return -1; |
| 451 | |
| 452 | if (firstrun) |
| 453 | { |
| 454 | WIN32_FILE_ATTRIBUTE_DATA lpFileInfo, targetfileinfo; |
| 455 | bool parent_dir_exists = false; |
| 456 | |
| 457 | /* Make sure that parent path exists */ |
| 458 | if (GetFileAttributesExFromAppW( |
| 459 | new_path.parent_path().wstring().c_str(), |
| 460 | GetFileExInfoStandard, &lpFileInfo)) |
| 461 | { |
| 462 | /* Check that the files attributes are not null or empty */ |
| 463 | if ( lpFileInfo.dwFileAttributes |
| 464 | != INVALID_FILE_ATTRIBUTES |
| 465 | && lpFileInfo.dwFileAttributes != 0) |
| 466 | { |
| 467 | /* Parent path doesn't exist, so we gotta create it */ |
| 468 | if (!(lpFileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) |
| 469 | uwp_mkdir_impl(new_path.parent_path()); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /* Make sure that source path exists */ |
| 474 | if (GetFileAttributesExFromAppW(old_path.wstring().c_str(), GetFileExInfoStandard, &lpFileInfo)) |
| 475 | { |
| 476 | /* Check that the files attributes are not null or empty */ |
| 477 | if ( lpFileInfo.dwFileAttributes != INVALID_FILE_ATTRIBUTES |
| 478 | && lpFileInfo.dwFileAttributes != 0) |
| 479 | { |
| 480 | /* Check if source path is a dir */ |
| 481 | if (lpFileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| 482 | { |
| 483 | int result; |
| 484 | /* create the target dir */ |
| 485 | CreateDirectoryFromAppW(new_path.wstring().c_str(), NULL); |
| 486 | /* Call move function again but with first run disabled in |
| 487 | * order to move the folder */ |
| 488 | if ((result = uwp_move_path(old_path, new_path, false)) != 0) |
| 489 | return result; |
| 490 | } |
| 491 | else |
| 492 | { |
| 493 | /* The file that we want to move exists so we can copy it now |
| 494 | * check if target file already exists. */ |
| 495 | if (GetFileAttributesExFromAppW( |
| 496 | new_path.wstring().c_str(), |
| 497 | GetFileExInfoStandard, |
| 498 | &targetfileinfo)) |
| 499 | { |
| 500 | if ( |
| 501 | targetfileinfo.dwFileAttributes != INVALID_FILE_ATTRIBUTES |
| 502 | && targetfileinfo.dwFileAttributes != 0 |
| 503 | && (!(targetfileinfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))) |
| 504 | { |
| 505 | if (DeleteFileFromAppW(new_path.wstring().c_str())) |
| 506 | return -1; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | if (!MoveFileFromAppW(old_path.wstring().c_str(), |
| 511 | new_path.wstring().c_str())) |
| 512 | return -1; |
| 513 | /* Set ACL */ |
| 514 | uwp_set_acl(new_path.wstring().c_str(), L"S-1-15-2-1"); |
| 515 | } |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | } |
| 520 | else |
| 521 | { |
| 522 | HANDLE searchResults; |
| 523 | WIN32_FIND_DATA findDataResult; |
| 524 | /* We are bypassing error checking and moving a dir. |
| 525 | * First we have to get a list of files in the dir. */ |
| 526 | wchar_t* filteredPath = wcsdup(old_path.wstring().c_str()); |
| 527 | wcscat_s(filteredPath, sizeof(L"\\*.*"), L"\\*.*"); |
| 528 | searchResults = FindFirstFileExFromAppW( |
| 529 | filteredPath, FindExInfoBasic, &findDataResult, |
| 530 | FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH); |
| 531 | |
| 532 | if (searchResults != INVALID_HANDLE_VALUE) |
| 533 | { |
| 534 | bool fail = false; |
| 535 | do |
| 536 | { |
| 537 | if ( wcscmp(findDataResult.cFileName, L".") != 0 |
| 538 | && wcscmp(findDataResult.cFileName, L"..") != 0) |
| 539 | { |
| 540 | std::filesystem::path temp_old = old_path; |
| 541 | std::filesystem::path temp_new = new_path; |
| 542 | temp_old /= findDataResult.cFileName; |
| 543 | temp_new /= findDataResult.cFileName; |
| 544 | if ( findDataResult.dwFileAttributes |
| 545 | & FILE_ATTRIBUTE_DIRECTORY) |
| 546 | { |
| 547 | CreateDirectoryFromAppW(temp_new.wstring().c_str(), NULL); |
| 548 | if (uwp_move_path(temp_old, temp_new, false) != 0) |
| 549 | fail = true; |
| 550 | } |
| 551 | else |
| 552 | { |
| 553 | WIN32_FILE_ATTRIBUTE_DATA targetfileinfo; |
| 554 | /* The file that we want to move exists so we can copy |
| 555 | * it now. |
| 556 | * Check if target file already exists. */ |
| 557 | if (GetFileAttributesExFromAppW(temp_new.wstring().c_str(), |
| 558 | GetFileExInfoStandard, &targetfileinfo)) |
| 559 | { |
| 560 | if ( |
| 561 | (targetfileinfo.dwFileAttributes != |
| 562 | INVALID_FILE_ATTRIBUTES) |
| 563 | && (targetfileinfo.dwFileAttributes != 0) |
| 564 | && (!(targetfileinfo.dwFileAttributes |
| 565 | & FILE_ATTRIBUTE_DIRECTORY))) |
| 566 | { |
| 567 | if (DeleteFileFromAppW(temp_new.wstring().c_str())) |
| 568 | fail = true; |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | if (!MoveFileFromAppW(temp_old.wstring().c_str(), |
| 573 | temp_new.wstring().c_str())) |
| 574 | fail = true; |
| 575 | /* Set ACL - this step sucks or at least used to |
| 576 | * before I made a whole function |
| 577 | * Don't know if we actually "need" to set the ACL |
| 578 | * though */ |
| 579 | uwp_set_acl(temp_new.wstring().c_str(), L"S-1-15-2-1"); |
| 580 | } |
| 581 | } |
| 582 | } while (FindNextFile(searchResults, &findDataResult)); |
| 583 | FindClose(searchResults); |
| 584 | if (fail) |
| 585 | return -1; |
| 586 | } |
| 587 | free(filteredPath); |
| 588 | } |
| 589 | return 0; |
| 590 | } |
| 591 | |
| 592 | /* C doesn't support default arguments so we wrap it up in a shell to enable |
| 593 | * us to use default arguments. |
| 594 | * Default arguments mean that we can do better recursion */ |
| 595 | int retro_vfs_file_rename_impl(const char* old_path, const char* new_path) |
| 596 | { |
| 597 | return uwp_move_path(std::filesystem::path(old_path), |
| 598 | std::filesystem::path(old_path), true); |
| 599 | } |
| 600 | |
| 601 | const char *retro_vfs_file_get_path_impl(libretro_vfs_implementation_file *stream) |
| 602 | { |
| 603 | /* Should never happen, do something noisy so caller can be fixed */ |
| 604 | if (!stream) |
| 605 | abort(); |
| 606 | return stream->orig_path; |
| 607 | } |
| 608 | |
| 609 | int retro_vfs_stat_impl(const char *path, int32_t *size) |
| 610 | { |
| 611 | wchar_t *path_wide; |
| 612 | _WIN32_FILE_ATTRIBUTE_DATA attribdata; |
| 613 | |
| 614 | if (!path || !*path) |
| 615 | return 0; |
| 616 | |
| 617 | path_wide = utf8_to_utf16_string_alloc(path); |
| 618 | windowsize_path(path_wide); |
| 619 | |
| 620 | /* Try Win32 first, this should work in AppData */ |
| 621 | if (GetFileAttributesExFromAppW(path_wide, |
| 622 | GetFileExInfoStandard, &attribdata)) |
| 623 | { |
| 624 | if (attribdata.dwFileAttributes != INVALID_FILE_ATTRIBUTES) |
| 625 | { |
| 626 | if (!(attribdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) |
| 627 | { |
| 628 | LARGE_INTEGER sz; |
| 629 | if (size) |
| 630 | { |
| 631 | sz.HighPart = attribdata.nFileSizeHigh; |
| 632 | sz.LowPart = attribdata.nFileSizeLow; |
| 633 | *size = sz.QuadPart; |
| 634 | } |
| 635 | } |
| 636 | free(path_wide); |
| 637 | return (attribdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| 638 | ? RETRO_VFS_STAT_IS_VALID | RETRO_VFS_STAT_IS_DIRECTORY |
| 639 | : RETRO_VFS_STAT_IS_VALID; |
| 640 | } |
| 641 | } |
| 642 | free(path_wide); |
| 643 | return 0; |
| 644 | } |
| 645 | |
| 646 | #ifdef VFS_FRONTEND |
| 647 | struct retro_vfs_dir_handle |
| 648 | #else |
| 649 | struct libretro_vfs_implementation_dir |
| 650 | #endif |
| 651 | { |
| 652 | char* orig_path; |
| 653 | WIN32_FIND_DATAW entry; |
| 654 | HANDLE directory; |
| 655 | bool next; |
| 656 | char path[PATH_MAX_LENGTH]; |
| 657 | }; |
| 658 | |
| 659 | libretro_vfs_implementation_dir* retro_vfs_opendir_impl( |
| 660 | const char* name, bool include_hidden) |
| 661 | { |
| 662 | char path_buf[1024]; |
| 663 | size_t copied = 0; |
| 664 | wchar_t* path_wide = NULL; |
| 665 | libretro_vfs_implementation_dir* rdir; |
| 666 | |
| 667 | /* Reject NULL or empty string paths*/ |
| 668 | if (!name || (*name == 0)) |
| 669 | return NULL; |
| 670 | |
| 671 | /*Allocate RDIR struct. Tidied later with retro_closedir*/ |
| 672 | if (!(rdir = (libretro_vfs_implementation_dir*)calloc(1, sizeof(*rdir)))) |
| 673 | return NULL; |
| 674 | |
| 675 | rdir->orig_path = strdup(name); |
| 676 | |
| 677 | copied = strlcpy(path_buf, name, sizeof(path_buf)); |
| 678 | |
| 679 | /* Non-NT platforms don't like extra slashes in the path */ |
| 680 | if (path_buf[copied - 1] != '\\') |
| 681 | path_buf[copied++] = '\\'; |
| 682 | |
| 683 | path_buf[copied] = '*'; |
| 684 | path_buf[copied + 1] = '\0'; |
| 685 | |
| 686 | path_wide = utf8_to_utf16_string_alloc(path_buf); |
| 687 | rdir->directory = FindFirstFileExFromAppW( |
| 688 | path_wide, FindExInfoStandard, &rdir->entry, |
| 689 | FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH); |
| 690 | |
| 691 | if (path_wide) |
| 692 | free(path_wide); |
| 693 | |
| 694 | if (include_hidden) |
| 695 | rdir->entry.dwFileAttributes |= FILE_ATTRIBUTE_HIDDEN; |
| 696 | else |
| 697 | rdir->entry.dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN; |
| 698 | |
| 699 | if (rdir->directory && rdir != INVALID_HANDLE_VALUE) |
| 700 | return rdir; |
| 701 | |
| 702 | retro_vfs_closedir_impl(rdir); |
| 703 | return NULL; |
| 704 | } |
| 705 | |
| 706 | bool retro_vfs_readdir_impl(libretro_vfs_implementation_dir* rdir) |
| 707 | { |
| 708 | if (rdir->next) |
| 709 | return (FindNextFileW(rdir->directory, &rdir->entry) != 0); |
| 710 | |
| 711 | rdir->next = true; |
| 712 | return (rdir->directory != INVALID_HANDLE_VALUE); |
| 713 | } |
| 714 | |
| 715 | const char* retro_vfs_dirent_get_name_impl(libretro_vfs_implementation_dir* rdir) |
| 716 | { |
| 717 | char* name = utf16_to_utf8_string_alloc(rdir->entry.cFileName); |
| 718 | memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName)); |
| 719 | strlcpy((char*)rdir->entry.cFileName, name, sizeof(rdir->entry.cFileName)); |
| 720 | if (name) |
| 721 | free(name); |
| 722 | return (char*)rdir->entry.cFileName; |
| 723 | } |
| 724 | |
| 725 | bool retro_vfs_dirent_is_dir_impl(libretro_vfs_implementation_dir* rdir) |
| 726 | { |
| 727 | const WIN32_FIND_DATA* entry = (const WIN32_FIND_DATA*)&rdir->entry; |
| 728 | return entry->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY; |
| 729 | } |
| 730 | |
| 731 | int retro_vfs_closedir_impl(libretro_vfs_implementation_dir* rdir) |
| 732 | { |
| 733 | if (!rdir) |
| 734 | return -1; |
| 735 | |
| 736 | if (rdir->directory != INVALID_HANDLE_VALUE) |
| 737 | FindClose(rdir->directory); |
| 738 | |
| 739 | if (rdir->orig_path) |
| 740 | free(rdir->orig_path); |
| 741 | free(rdir); |
| 742 | return 0; |
| 743 | } |
| 744 | |
| 745 | void uwp_set_acl(const wchar_t* path, const wchar_t* AccessString) |
| 746 | { |
| 747 | PSECURITY_DESCRIPTOR SecurityDescriptor = NULL; |
| 748 | EXPLICIT_ACCESSW ExplicitAccess = { 0 }; |
| 749 | ACL* AccessControlCurrent = NULL; |
| 750 | ACL* AccessControlNew = NULL; |
| 751 | SECURITY_INFORMATION SecurityInfo = DACL_SECURITY_INFORMATION; |
| 752 | PSID SecurityIdentifier = NULL; |
| 753 | HANDLE original_file = CreateFileFromAppW(path, |
| 754 | GENERIC_READ | GENERIC_WRITE | WRITE_DAC, |
| 755 | FILE_SHARE_READ | FILE_SHARE_WRITE, |
| 756 | NULL, OPEN_EXISTING, 0, NULL); |
| 757 | |
| 758 | if (original_file != INVALID_HANDLE_VALUE) |
| 759 | { |
| 760 | if ( |
| 761 | GetSecurityInfo( |
| 762 | original_file, |
| 763 | SE_FILE_OBJECT, |
| 764 | DACL_SECURITY_INFORMATION, |
| 765 | NULL, |
| 766 | NULL, |
| 767 | &AccessControlCurrent, |
| 768 | NULL, |
| 769 | &SecurityDescriptor |
| 770 | ) == ERROR_SUCCESS |
| 771 | ) |
| 772 | { |
| 773 | ConvertStringSidToSidW(AccessString, &SecurityIdentifier); |
| 774 | if (SecurityIdentifier) |
| 775 | { |
| 776 | ExplicitAccess.grfAccessPermissions= GENERIC_READ | GENERIC_EXECUTE | GENERIC_WRITE; |
| 777 | ExplicitAccess.grfAccessMode = SET_ACCESS; |
| 778 | ExplicitAccess.grfInheritance = SUB_CONTAINERS_AND_OBJECTS_INHERIT; |
| 779 | ExplicitAccess.Trustee.TrusteeForm = TRUSTEE_IS_SID; |
| 780 | ExplicitAccess.Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP; |
| 781 | ExplicitAccess.Trustee.ptstrName = reinterpret_cast<wchar_t*>(SecurityIdentifier); |
| 782 | |
| 783 | if ( |
| 784 | SetEntriesInAclW( |
| 785 | 1, |
| 786 | &ExplicitAccess, |
| 787 | AccessControlCurrent, |
| 788 | &AccessControlNew |
| 789 | ) == ERROR_SUCCESS |
| 790 | ) |
| 791 | SetSecurityInfo( |
| 792 | original_file, |
| 793 | SE_FILE_OBJECT, |
| 794 | SecurityInfo, |
| 795 | NULL, |
| 796 | NULL, |
| 797 | AccessControlNew, |
| 798 | NULL |
| 799 | ); |
| 800 | } |
| 801 | } |
| 802 | if (SecurityDescriptor) |
| 803 | LocalFree(reinterpret_cast<HLOCAL>(SecurityDescriptor)); |
| 804 | if (AccessControlNew) |
| 805 | LocalFree(reinterpret_cast<HLOCAL>(AccessControlNew)); |
| 806 | CloseHandle(original_file); |
| 807 | } |
| 808 | } |