* With both implicit and explicit linking, Windows first searches for "known DLLs", such as Kernel32.dll and User32.dll. * Windows then searches for the DLLs in the following sequence: * * - The directory where the executable module for the current process is located. * - The current directory. * - The Windows system directory. The GetSystemDirectory function retrieves the path of this direct
| 326 | * - The directories listed in the PATH environment variable. |
| 327 | */ |
| 328 | PE_STATUS peLocateModule( PE *exe, PE_IMPORT_MODULE *pModule, PE *peModule ) |
| 329 | { |
| 330 | PE_STATUS status = PE_NOT_FOUND; |
| 331 | char szExeFilePath[MAX_PATH + 1] = {0}, |
| 332 | szModuleFilePath[MAX_PATH + 1] = {0}, |
| 333 | szSystemDirectory[MAX_PATH + 1] = {0}, |
| 334 | szWindowsDirectory[MAX_PATH + 1] = {0}, |
| 335 | *pszPaths = NULL, |
| 336 | *pszPointer = NULL; |
| 337 | |
| 338 | if( exe->szFileName[0] != '[' ) |
| 339 | { |
| 340 | GetFullPathName( exe->szFileName, MAX_PATH, szExeFilePath, NULL ); |
| 341 | |
| 342 | pszPointer = strrchr( szExeFilePath, '\\' ); |
| 343 | if( pszPointer ) |
| 344 | *pszPointer = '\0'; |
| 345 | } |
| 346 | |
| 347 | sprintf_s( szModuleFilePath, "%s\\%s", szExeFilePath, pModule->Name ); |
| 348 | if( peFileExists( szModuleFilePath ) ) |
| 349 | { |
| 350 | return peOpenFile( peModule, szModuleFilePath ); |
| 351 | } |
| 352 | |
| 353 | GetSystemDirectory( szSystemDirectory, MAX_PATH ); |
| 354 | sprintf_s( szModuleFilePath, "%s\\%s", szSystemDirectory, pModule->Name ); |
| 355 | if( peFileExists( szModuleFilePath ) ) |
| 356 | { |
| 357 | return peOpenFile( peModule, szModuleFilePath ); |
| 358 | } |
| 359 | |
| 360 | GetWindowsDirectory( szWindowsDirectory, MAX_PATH ); |
| 361 | sprintf_s( szModuleFilePath, "%s\\%s", szWindowsDirectory, pModule->Name ); |
| 362 | if( peFileExists( szModuleFilePath ) ) |
| 363 | { |
| 364 | return peOpenFile( peModule, szModuleFilePath ); |
| 365 | } |
| 366 | |
| 367 | size_t len; |
| 368 | errno_t err = _dupenv_s( &pszPaths, &len, "PATH" ); |
| 369 | if( err == 0 && pszPaths ) |
| 370 | { |
| 371 | char *pszCurrentPath = pszPaths; |
| 372 | for(;;) |
| 373 | { |
| 374 | pszPointer = strchr( pszCurrentPath, ';' ); |
| 375 | if( pszPointer ) |
| 376 | { |
| 377 | *pszPointer = '\0'; |
| 378 | |
| 379 | sprintf_s( szModuleFilePath, "%s\\%s", pszCurrentPath, pModule->Name ); |
| 380 | if( peFileExists( szModuleFilePath ) ) |
| 381 | { |
| 382 | free( pszPaths ); |
| 383 | |
| 384 | return peOpenFile( peModule, szModuleFilePath ); |
| 385 | } |
no test coverage detected