| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. |
| 2 | |
| 3 | #include "precomp.h" |
| 4 | #include "rexutil.h" |
| 5 | |
| 6 | |
| 7 | // Exit macros |
| 8 | #define RexExitOnLastError(x, s, ...) ExitOnLastErrorSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 9 | #define RexExitOnLastErrorDebugTrace(x, s, ...) ExitOnLastErrorDebugTraceSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 10 | #define RexExitWithLastError(x, s, ...) ExitWithLastErrorSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 11 | #define RexExitOnFailure(x, s, ...) ExitOnFailureSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 12 | #define RexExitOnRootFailure(x, s, ...) ExitOnRootFailureSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 13 | #define RexExitOnFailureDebugTrace(x, s, ...) ExitOnFailureDebugTraceSource(DUTIL_SOURCE_REXUTIL, x, s, __VA_ARGS__) |
| 14 | #define RexExitOnNull(p, x, e, s, ...) ExitOnNullSource(DUTIL_SOURCE_REXUTIL, p, x, e, s, __VA_ARGS__) |
| 15 | #define RexExitOnNullWithLastError(p, x, s, ...) ExitOnNullWithLastErrorSource(DUTIL_SOURCE_REXUTIL, p, x, s, __VA_ARGS__) |
| 16 | #define RexExitOnNullDebugTrace(p, x, e, s, ...) ExitOnNullDebugTraceSource(DUTIL_SOURCE_REXUTIL, p, x, e, s, __VA_ARGS__) |
| 17 | #define RexExitOnInvalidHandleWithLastError(p, x, s, ...) ExitOnInvalidHandleWithLastErrorSource(DUTIL_SOURCE_REXUTIL, p, x, s, __VA_ARGS__) |
| 18 | #define RexExitOnWin32Error(e, x, s, ...) ExitOnWin32ErrorSource(DUTIL_SOURCE_REXUTIL, e, x, s, __VA_ARGS__) |
| 19 | #define RexExitOnGdipFailure(g, x, s, ...) ExitOnGdipFailureSource(DUTIL_SOURCE_REXUTIL, g, x, s, __VA_ARGS__) |
| 20 | |
| 21 | // |
| 22 | // static globals |
| 23 | // |
| 24 | static HMODULE vhCabinetDll = NULL; |
| 25 | static HFDI vhfdi = NULL; |
| 26 | static ERF verf; |
| 27 | |
| 28 | static FAKE_FILE vrgffFileTable[FILETABLESIZE]; |
| 29 | static DWORD vcbRes; |
| 30 | static LPCBYTE vpbRes; |
| 31 | static LPSTR vpszResource = NULL; |
| 32 | static REX_CALLBACK_WRITE vpfnWrite = NULL; |
| 33 | |
| 34 | static HRESULT vhrLastError = S_OK; |
| 35 | |
| 36 | // |
| 37 | // structs |
| 38 | // |
| 39 | struct REX_CALLBACK_STRUCT |
| 40 | { |
| 41 | BOOL fStopExtracting; // flag set when no more files are needed |
| 42 | LPCWSTR pwzExtract; // file to extract ("*" means extract all) |
| 43 | LPCWSTR pwzExtractDir; // directory to extract files to |
| 44 | LPCWSTR pwzExtractName; // name of file (pwzExtract can't be "*") |
| 45 | |
| 46 | // possible user data |
| 47 | REX_CALLBACK_PROGRESS pfnProgress; |
| 48 | LPVOID pvContext; |
| 49 | }; |
| 50 | |
| 51 | // |
| 52 | // prototypes |
| 53 | // |
| 54 | static __callback LPVOID DIAMONDAPI RexAlloc(DWORD dwSize); |
| 55 | static __callback void DIAMONDAPI RexFree(LPVOID pvData); |
| 56 | static __callback INT_PTR FAR DIAMONDAPI RexOpen(__in_z char FAR *pszFile, int oflag, int pmode); |
| 57 | static __callback UINT FAR DIAMONDAPI RexRead(INT_PTR hf, __out_bcount(cb) void FAR *pv, UINT cb); |
| 58 | static __callback UINT FAR DIAMONDAPI RexWrite(INT_PTR hf, __in_bcount(cb) void FAR *pv, UINT cb); |
| 59 | static __callback int FAR DIAMONDAPI RexClose(INT_PTR hf); |
| 60 | static __callback long FAR DIAMONDAPI RexSeek(INT_PTR hf, long dist, int seektype); |
| 61 | static __callback INT_PTR DIAMONDAPI RexCallback(FDINOTIFICATIONTYPE iNotification, FDINOTIFICATION *pFDINotify); |
| 62 | |
| 63 | |
| 64 | /******************************************************************** |
| 65 | RexInitialize - initializes internal static variables |
| 66 | |
| 67 | *******************************************************************/ |
| 68 | extern "C" HRESULT RexInitialize() |
| 69 | { |
| 70 | Assert(!vhfdi); |
| 71 | |
| 72 | HRESULT hr = S_OK; |
| 73 | |
| 74 | vhfdi = ::FDICreate(RexAlloc, RexFree, RexOpen, RexRead, RexWrite, RexClose, RexSeek, cpuUNKNOWN, &verf); |
| 75 | if (!vhfdi) |
| 76 | { |
| 77 | hr = E_FAIL; |
| 78 | RexExitOnFailure(hr, "failed to initialize cabinet.dll"); // TODO: put verf info in trace message here |
| 79 | } |
| 80 | |
| 81 | ::ZeroMemory(vrgffFileTable, sizeof(vrgffFileTable)); |
| 82 | |
| 83 | LExit: |
| 84 | if (FAILED(hr)) |
| 85 | { |
| 86 | ::FDIDestroy(vhfdi); |
| 87 | vhfdi = NULL; |
| 88 | |
| 89 | ReleaseNullStr(vpszResource); |
| 90 | } |
| 91 | |
| 92 | return hr; |
| 93 | } |
| 94 | |
| 95 | |
| 96 | /******************************************************************** |
| 97 | RexUninitialize - initializes internal static variables |
| 98 | |
| 99 | *******************************************************************/ |
| 100 | extern "C" void RexUninitialize() |
| 101 | { |
| 102 | if (vhfdi) |
| 103 | { |
| 104 | ::FDIDestroy(vhfdi); |
| 105 | vhfdi = NULL; |
| 106 | |
| 107 | ReleaseNullStr(vpszResource); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | |
| 112 | /******************************************************************** |
| 113 | RexExtract - extracts one or all files from a resource cabinet |
| 114 | |
| 115 | NOTE: wzExtractId can be a single file id or "*" to extract all files |
| 116 | wzExttractDir must be normalized (end in a "\") |
| 117 | wzExtractName is ignored if wzExtractId is "*" |
| 118 | *******************************************************************/ |
| 119 | extern "C" HRESULT RexExtract( |
| 120 | __in_z LPCSTR szResource, |
| 121 | __in_z LPCWSTR wzExtractId, |
| 122 | __in_z LPCWSTR wzExtractDir, |
| 123 | __in_z LPCWSTR wzExtractName, |
| 124 | __in REX_CALLBACK_PROGRESS pfnProgress, |
| 125 | __in REX_CALLBACK_WRITE pfnWrite, |
| 126 | __in LPVOID pvContext |
| 127 | ) |
| 128 | { |
| 129 | Assert(vhfdi); |
| 130 | HRESULT hr = S_OK; |
| 131 | BOOL fResult = FALSE; |
| 132 | |
| 133 | HRSRC hResInfo = NULL; |
| 134 | HANDLE hRes = NULL; |
| 135 | |
| 136 | REX_CALLBACK_STRUCT rcs = { }; |
| 137 | |
| 138 | // remember the write callback |
| 139 | vpfnWrite = pfnWrite; |
| 140 | |
| 141 | // |
| 142 | // load the cabinet resource |
| 143 | // |
| 144 | hResInfo = ::FindResourceExA(NULL, RT_RCDATA, szResource, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL)); |
| 145 | RexExitOnNullWithLastError(hResInfo, hr, "Failed to find resource."); |
| 146 | //hResInfo = ::FindResourceW(NULL, wzResource, /*RT_RCDATA*/MAKEINTRESOURCEW(10)); |
| 147 | //ExitOnNullWithLastError(hResInfo, hr, "failed to load resource info"); |
| 148 | |
| 149 | hRes = ::LoadResource(NULL, hResInfo); |
| 150 | RexExitOnNullWithLastError(hRes, hr, "failed to load resource"); |
| 151 | |
| 152 | vcbRes = ::SizeofResource(NULL, hResInfo); |
| 153 | vpbRes = (const BYTE*)::LockResource(hRes); |
| 154 | |
| 155 | // TODO: Call FDIIsCabinet to confirm resource is a cabinet before trying to extract from it |
| 156 | |
| 157 | // |
| 158 | // convert the resource name to multi-byte |
| 159 | // |
| 160 | //if (!::WideCharToMultiByte(CP_ACP, 0, wzResource, -1, vszResource, countof(vszResource), NULL, NULL)) |
| 161 | //{ |
| 162 | // RexExitOnLastError(hr, "failed to convert cabinet resource name to ASCII: %ls", wzResource); |
| 163 | //} |
| 164 | |
| 165 | hr = StrAnsiAllocStringAnsi(&vpszResource, szResource, 0); |
| 166 | RexExitOnFailure(hr, "Failed to copy resource name to global."); |
| 167 | |
| 168 | // |
| 169 | // iterate through files in cabinet extracting them to the callback function |
| 170 | // |
| 171 | rcs.fStopExtracting = FALSE; |
| 172 | rcs.pwzExtract = wzExtractId; |
| 173 | rcs.pwzExtractDir = wzExtractDir; |
| 174 | rcs.pwzExtractName = wzExtractName; |
| 175 | rcs.pfnProgress = pfnProgress; |
| 176 | rcs.pvContext = pvContext; |
| 177 | |
| 178 | fResult = ::FDICopy(vhfdi, vpszResource, "", 0, RexCallback, NULL, static_cast<void*>(&rcs)); |
| 179 | if (!fResult && !rcs.fStopExtracting) // if something went wrong and it wasn't us just stopping the extraction, then return a failure |
| 180 | { |
| 181 | hr = vhrLastError; // TODO: put verf info in trace message here |
| 182 | } |
| 183 | |
| 184 | LExit: |
| 185 | return hr; |
| 186 | } |
| 187 | |
| 188 | |
| 189 | /**************************************************************************** |
| 190 | default extract routines |
| 191 | |
| 192 | ****************************************************************************/ |
| 193 | static __callback LPVOID DIAMONDAPI RexAlloc(DWORD dwSize) |
| 194 | { |
| 195 | return MemAlloc(dwSize, FALSE); |
| 196 | } |
| 197 | |
| 198 | |
| 199 | static __callback void DIAMONDAPI RexFree(LPVOID pvData) |
| 200 | { |
| 201 | MemFree(pvData); |
| 202 | } |
| 203 | |
| 204 | |
| 205 | static __callback INT_PTR FAR DIAMONDAPI RexOpen(__in_z char FAR *pszFile, int oflag, int pmode) |
| 206 | { |
| 207 | HRESULT hr = S_OK; |
| 208 | HANDLE hFile = INVALID_HANDLE_VALUE; |
| 209 | int i = 0; |
| 210 | |
| 211 | // if FDI asks for some unusual mode (__in low memory situation it could ask for a scratch file) fail |
| 212 | if ((oflag != (/*_O_BINARY*/ 0x8000 | /*_O_RDONLY*/ 0x0000)) || (pmode != (_S_IREAD | _S_IWRITE))) |
| 213 | { |
| 214 | hr = E_OUTOFMEMORY; |
| 215 | RexExitOnFailure(hr, "FDI asked for to create a scratch file, which is unusual"); |
| 216 | } |
| 217 | |
| 218 | // find an empty spot in the fake file table |
| 219 | for (i = 0; i < FILETABLESIZE; ++i) |
| 220 | { |
| 221 | if (!vrgffFileTable[i].fUsed) |
| 222 | { |
| 223 | break; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | // we should never run out of space in the fake file table |
| 228 | if (FILETABLESIZE <= i) |
| 229 | { |
| 230 | hr = E_OUTOFMEMORY; |
| 231 | RexExitOnFailure(hr, "File table exceeded"); |
| 232 | } |
| 233 | |
| 234 | if (0 == lstrcmpA(vpszResource, pszFile)) |
| 235 | { |
| 236 | vrgffFileTable[i].fUsed = TRUE; |
| 237 | vrgffFileTable[i].fftType = MEMORY_FILE; |
| 238 | vrgffFileTable[i].mfFile.vpStart = static_cast<LPCBYTE>(vpbRes); |
| 239 | vrgffFileTable[i].mfFile.uiCurrent = 0; |
| 240 | vrgffFileTable[i].mfFile.uiLength = vcbRes; |
| 241 | } |
| 242 | else // it's a real file |
| 243 | { |
| 244 | hFile = ::CreateFileA(pszFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 245 | if (INVALID_HANDLE_VALUE == hFile) |
| 246 | { |
| 247 | RexExitWithLastError(hr, "failed to open file: %s", pszFile); |
| 248 | } |
| 249 | |
| 250 | vrgffFileTable[i].fUsed = TRUE; |
| 251 | vrgffFileTable[i].fftType = NORMAL_FILE; |
| 252 | vrgffFileTable[i].hFile = hFile; |
| 253 | } |
| 254 | |
| 255 | LExit: |
| 256 | if (FAILED(hr)) |
| 257 | { |
| 258 | vhrLastError = hr; |
| 259 | } |
| 260 | |
| 261 | return FAILED(hr) ? -1 : i; |
| 262 | } |
| 263 | |
| 264 | |
| 265 | static __callback UINT FAR DIAMONDAPI RexRead(INT_PTR hf, __out_bcount(cb) void FAR *pv, UINT cb) |
| 266 | { |
| 267 | Assert(vrgffFileTable[hf].fUsed); |
| 268 | |
| 269 | HRESULT hr = S_OK; |
| 270 | DWORD cbRead = 0; |
| 271 | DWORD cbAvailable = 0; |
| 272 | |
| 273 | if (MEMORY_FILE == vrgffFileTable[hf].fftType) |
| 274 | { |
| 275 | // ensure that we don't read past the length of the resource |
| 276 | cbAvailable = vrgffFileTable[hf].mfFile.uiLength - vrgffFileTable[hf].mfFile.uiCurrent; |
| 277 | cbRead = cb < cbAvailable? cb : cbAvailable; |
| 278 | |
| 279 | memcpy(pv, static_cast<const void *>(vrgffFileTable[hf].mfFile.vpStart + vrgffFileTable[hf].mfFile.uiCurrent), cbRead); |
| 280 | |
| 281 | vrgffFileTable[hf].mfFile.uiCurrent += cbRead; |
| 282 | } |
| 283 | else // NORMAL_FILE |
| 284 | { |
| 285 | Assert(vrgffFileTable[hf].hFile && vrgffFileTable[hf].hFile != INVALID_HANDLE_VALUE); |
| 286 | |
| 287 | if (!::ReadFile(vrgffFileTable[hf].hFile, pv, cb, &cbRead, NULL)) |
| 288 | { |
| 289 | RexExitWithLastError(hr, "failed to read during cabinet extraction"); |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | LExit: |
| 294 | if (FAILED(hr)) |
| 295 | { |
| 296 | vhrLastError = hr; |
| 297 | } |
| 298 | |
| 299 | return FAILED(hr) ? -1 : cbRead; |
| 300 | } |
| 301 | |
| 302 | |
| 303 | static __callback UINT FAR DIAMONDAPI RexWrite(INT_PTR hf, __in_bcount(cb) void FAR *pv, UINT cb) |
| 304 | { |
| 305 | Assert(vrgffFileTable[hf].fUsed); |
| 306 | Assert(vrgffFileTable[hf].fftType == NORMAL_FILE); // we should never be writing to a memory file |
| 307 | |
| 308 | HRESULT hr = S_OK; |
| 309 | DWORD cbWrite = 0; |
| 310 | |
| 311 | Assert(vrgffFileTable[hf].hFile && vrgffFileTable[hf].hFile != INVALID_HANDLE_VALUE); |
| 312 | if (!::WriteFile(reinterpret_cast<HANDLE>(vrgffFileTable[hf].hFile), pv, cb, &cbWrite, NULL)) |
| 313 | { |
| 314 | RexExitWithLastError(hr, "failed to write during cabinet extraction"); |
| 315 | } |
| 316 | |
| 317 | // call the writer callback if defined |
| 318 | if (vpfnWrite) |
| 319 | { |
| 320 | vpfnWrite(cb); |
| 321 | } |
| 322 | |
| 323 | LExit: |
| 324 | if (FAILED(hr)) |
| 325 | { |
| 326 | vhrLastError = hr; |
| 327 | } |
| 328 | |
| 329 | return FAILED(hr) ? -1 : cbWrite; |
| 330 | } |
| 331 | |
| 332 | |
| 333 | static __callback long FAR DIAMONDAPI RexSeek(INT_PTR hf, long dist, int seektype) |
| 334 | { |
| 335 | Assert(vrgffFileTable[hf].fUsed); |
| 336 | |
| 337 | HRESULT hr = S_OK; |
| 338 | DWORD dwMoveMethod; |
| 339 | LONG lMove = 0; |
| 340 | |
| 341 | switch (seektype) |
| 342 | { |
| 343 | case 0: // SEEK_SET |
| 344 | dwMoveMethod = FILE_BEGIN; |
| 345 | break; |
| 346 | case 1: /// SEEK_CUR |
| 347 | dwMoveMethod = FILE_CURRENT; |
| 348 | break; |
| 349 | case 2: // SEEK_END |
| 350 | dwMoveMethod = FILE_END; |
| 351 | break; |
| 352 | default : |
| 353 | dwMoveMethod = 0; |
| 354 | hr = E_UNEXPECTED; |
| 355 | RexExitOnFailure(hr, "unexpected seektype in FDISeek(): %d", seektype); |
| 356 | } |
| 357 | |
| 358 | if (MEMORY_FILE == vrgffFileTable[hf].fftType) |
| 359 | { |
| 360 | if (FILE_BEGIN == dwMoveMethod) |
| 361 | { |
| 362 | vrgffFileTable[hf].mfFile.uiCurrent = dist; |
| 363 | } |
| 364 | else if (FILE_CURRENT == dwMoveMethod) |
| 365 | { |
| 366 | vrgffFileTable[hf].mfFile.uiCurrent += dist; |
| 367 | } |
| 368 | else // FILE_END |
| 369 | { |
| 370 | vrgffFileTable[hf].mfFile.uiCurrent = vrgffFileTable[hf].mfFile.uiLength + dist; |
| 371 | } |
| 372 | |
| 373 | lMove = vrgffFileTable[hf].mfFile.uiCurrent; |
| 374 | } |
| 375 | else // NORMAL_FILE |
| 376 | { |
| 377 | Assert(vrgffFileTable[hf].hFile && vrgffFileTable[hf].hFile != INVALID_HANDLE_VALUE); |
| 378 | |
| 379 | // SetFilePointer returns -1 if it fails (this will cause FDI to quit with an FDIERROR_USER_ABORT error. |
| 380 | // (Unless this happens while working on a cabinet, in which case FDI returns FDIERROR_CORRUPT_CABINET) |
| 381 | lMove = ::SetFilePointer(vrgffFileTable[hf].hFile, dist, NULL, dwMoveMethod); |
| 382 | if (0xFFFFFFFF == lMove) |
| 383 | { |
| 384 | RexExitWithLastError(hr, "failed to move file pointer %d bytes", dist); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | LExit: |
| 389 | if (FAILED(hr)) |
| 390 | { |
| 391 | vhrLastError = hr; |
| 392 | } |
| 393 | |
| 394 | return FAILED(hr) ? -1 : lMove; |
| 395 | } |
| 396 | |
| 397 | |
| 398 | __callback int FAR DIAMONDAPI RexClose(INT_PTR hf) |
| 399 | { |
| 400 | Assert(vrgffFileTable[hf].fUsed); |
| 401 | |
| 402 | HRESULT hr = S_OK; |
| 403 | |
| 404 | if (MEMORY_FILE == vrgffFileTable[hf].fftType) |
| 405 | { |
| 406 | vrgffFileTable[hf].mfFile.vpStart = NULL; |
| 407 | vrgffFileTable[hf].mfFile.uiCurrent = 0; |
| 408 | vrgffFileTable[hf].mfFile.uiLength = 0; |
| 409 | } |
| 410 | else |
| 411 | { |
| 412 | Assert(vrgffFileTable[hf].hFile && vrgffFileTable[hf].hFile != INVALID_HANDLE_VALUE); |
| 413 | |
| 414 | if (!::CloseHandle(vrgffFileTable[hf].hFile)) |
| 415 | { |
| 416 | RexExitWithLastError(hr, "failed to close file during cabinet extraction"); |
| 417 | } |
| 418 | |
| 419 | vrgffFileTable[hf].hFile = INVALID_HANDLE_VALUE; |
| 420 | } |
| 421 | |
| 422 | vrgffFileTable[hf].fUsed = FALSE; |
| 423 | |
| 424 | LExit: |
| 425 | if (FAILED(hr)) |
| 426 | { |
| 427 | vhrLastError = hr; |
| 428 | } |
| 429 | |
| 430 | return FAILED(hr) ? -1 : 0; |
| 431 | } |
| 432 | |
| 433 | |
| 434 | static __callback INT_PTR DIAMONDAPI RexCallback(FDINOTIFICATIONTYPE iNotification, FDINOTIFICATION *pFDINotify) |
| 435 | { |
| 436 | Assert(pFDINotify->pv); |
| 437 | |
| 438 | HRESULT hr = S_OK; |
| 439 | int ipResult = 0; // result to return on success |
| 440 | HANDLE hFile = INVALID_HANDLE_VALUE; |
| 441 | |
| 442 | REX_CALLBACK_STRUCT* prcs = static_cast<REX_CALLBACK_STRUCT*>(pFDINotify->pv); |
| 443 | LPCSTR sz = NULL; |
| 444 | LPWSTR pwz = NULL; |
| 445 | LPWSTR pwzPath = NULL; |
| 446 | FILETIME ft = { }; |
| 447 | int i = 0; |
| 448 | |
| 449 | switch (iNotification) |
| 450 | { |
| 451 | case fdintCOPY_FILE: // beGIN extracting a resource from cabinet |
| 452 | Assert(pFDINotify->psz1 && prcs); |
| 453 | |
| 454 | if (prcs->fStopExtracting) |
| 455 | { |
| 456 | ExitFunction1(hr = S_FALSE); // no more extracting |
| 457 | } |
| 458 | |
| 459 | // convert params to useful variables |
| 460 | sz = static_cast<LPCSTR>(pFDINotify->psz1); |
| 461 | RexExitOnNull(sz, hr, E_INVALIDARG, "No cabinet file ID given to convert"); |
| 462 | |
| 463 | hr = StrAllocStringAnsi(&pwz, sz, 0, CP_ACP); |
| 464 | RexExitOnFailure(hr, "failed to convert cabinet file id to unicode: %hs", sz); |
| 465 | |
| 466 | if (prcs->pfnProgress) |
| 467 | { |
| 468 | hr = prcs->pfnProgress(TRUE, pwz, prcs->pvContext); |
| 469 | if (S_OK != hr) |
| 470 | { |
| 471 | ExitFunction(); |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | if (L'*' == *prcs->pwzExtract || 0 == lstrcmpW(prcs->pwzExtract, pwz)) |
| 476 | { |
| 477 | // get the created date for the resource in the cabinet |
| 478 | if (!::DosDateTimeToFileTime(pFDINotify->date, pFDINotify->time, &ft)) |
| 479 | { |
| 480 | RexExitWithLastError(hr, "failed to get time for resource: %ls", pwz); |
| 481 | } |
| 482 | |
| 483 | if (L'*' == *prcs->pwzExtract) |
| 484 | { |
| 485 | hr = PathConcat(prcs->pwzExtractDir, pwz, &pwzPath); |
| 486 | RexExitOnFailure(hr, "failed to concat onto path: %ls file: %ls", prcs->pwzExtractDir, pwz); |
| 487 | } |
| 488 | else |
| 489 | { |
| 490 | Assert(*prcs->pwzExtractName); |
| 491 | |
| 492 | hr = PathConcat(prcs->pwzExtractDir, prcs->pwzExtractName, &pwzPath); |
| 493 | RexExitOnFailure(hr, "failed to concat onto path: %ls file: %ls", prcs->pwzExtractDir, prcs->pwzExtractName); |
| 494 | } |
| 495 | |
| 496 | // Quickly chop off the file name part of the path to ensure the path exists |
| 497 | // then put the file name back on the path (by putting the first character |
| 498 | // back over the null terminator). |
| 499 | LPWSTR wzFile = PathFile(pwzPath); |
| 500 | WCHAR wzFileFirstChar = *wzFile; |
| 501 | *wzFile = L'\0'; |
| 502 | |
| 503 | hr = DirEnsureExists(pwzPath, NULL); |
| 504 | RexExitOnFailure(hr, "failed to ensure directory: %ls", pwzPath); |
| 505 | |
| 506 | hr = S_OK; |
| 507 | |
| 508 | *wzFile = wzFileFirstChar; |
| 509 | |
| 510 | // find an empty spot in the fake file table |
| 511 | for (i = 0; i < FILETABLESIZE; ++i) |
| 512 | { |
| 513 | if (!vrgffFileTable[i].fUsed) |
| 514 | { |
| 515 | break; |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | // we should never run out of space in the fake file table |
| 520 | if (FILETABLESIZE <= i) |
| 521 | { |
| 522 | hr = E_OUTOFMEMORY; |
| 523 | RexExitOnFailure(hr, "File table exceeded"); |
| 524 | } |
| 525 | |
| 526 | // open the file |
| 527 | hFile = ::CreateFileW(pwzPath, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| 528 | if (INVALID_HANDLE_VALUE == hFile) |
| 529 | { |
| 530 | RexExitWithLastError(hr, "failed to open file: %ls", pwzPath); |
| 531 | } |
| 532 | |
| 533 | vrgffFileTable[i].fUsed = TRUE; |
| 534 | vrgffFileTable[i].fftType = NORMAL_FILE; |
| 535 | vrgffFileTable[i].hFile = hFile; |
| 536 | |
| 537 | ipResult = i; |
| 538 | |
| 539 | ::SetFileTime(vrgffFileTable[i].hFile, &ft, &ft, &ft); // try to set the file time (who cares if it fails) |
| 540 | |
| 541 | if (::SetFilePointer(vrgffFileTable[i].hFile, pFDINotify->cb, NULL, FILE_BEGIN)) // try to set the end of the file (don't worry if this fails) |
| 542 | { |
| 543 | if (::SetEndOfFile(vrgffFileTable[i].hFile)) |
| 544 | { |
| 545 | ::SetFilePointer(vrgffFileTable[i].hFile, 0, NULL, FILE_BEGIN); // reset the file pointer |
| 546 | } |
| 547 | } |
| 548 | } |
| 549 | else // resource wasn't requested, skip it |
| 550 | { |
| 551 | hr = S_OK; |
| 552 | ipResult = 0; |
| 553 | } |
| 554 | |
| 555 | break; |
| 556 | case fdintCLOSE_FILE_INFO: // resource extraction complete |
| 557 | Assert(pFDINotify->hf && prcs && pFDINotify->psz1); |
| 558 | |
| 559 | // convert params to useful variables |
| 560 | sz = static_cast<LPCSTR>(pFDINotify->psz1); |
| 561 | RexExitOnNull(sz, hr, E_INVALIDARG, "No cabinet file ID given to convert"); |
| 562 | |
| 563 | hr = StrAllocStringAnsi(&pwz, sz, 0, CP_ACP); |
| 564 | RexExitOnFailure(hr, "failed to convert cabinet file id to unicode: %hs", sz); |
| 565 | |
| 566 | RexClose(pFDINotify->hf); |
| 567 | |
| 568 | if (prcs->pfnProgress) |
| 569 | { |
| 570 | hr = prcs->pfnProgress(FALSE, pwz, prcs->pvContext); |
| 571 | } |
| 572 | |
| 573 | if (S_OK == hr && L'*' == *prcs->pwzExtract) // if everything is okay and we're extracting all files, keep going |
| 574 | { |
| 575 | ipResult = TRUE; |
| 576 | } |
| 577 | else // something went wrong or we only needed to extract one file |
| 578 | { |
| 579 | hr = S_OK; |
| 580 | ipResult = FALSE; |
| 581 | prcs->fStopExtracting = TRUE; |
| 582 | } |
| 583 | |
| 584 | break; |
| 585 | case fdintPARTIAL_FILE: __fallthrough; // no action needed for these messages, fall through |
| 586 | case fdintNEXT_CABINET: __fallthrough; |
| 587 | case fdintENUMERATE: __fallthrough; |
| 588 | case fdintCABINET_INFO: |
| 589 | break; |
| 590 | default: |
| 591 | AssertSz(FALSE, "RexCallback() - unknown FDI notification command"); |
| 592 | }; |
| 593 | |
| 594 | LExit: |
| 595 | if (FAILED(hr)) |
| 596 | { |
| 597 | vhrLastError = hr; |
| 598 | } |
| 599 | |
| 600 | ReleaseStr(pwz); |
| 601 | ReleaseStr(pwzPath); |
| 602 | |
| 603 | return (S_OK == hr) ? ipResult : -1; |
| 604 | } |