files/directory.c

   1 /*
   2  * DOS directories functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <ctype.h>
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 #include <unistd.h>
  16 #include <errno.h>
  17 #ifdef HAVE_SYS_ERRNO_H
  18 #include <sys/errno.h>
  19 #endif
  20
  21 #include "winbase.h"
  22 #include "wine/winbase16.h"
  23 #include "windef.h"
  24 #include "wingdi.h"
  25 #include "wine/winuser16.h"
  26 #include "winerror.h"
  27 #include "drive.h"
  28 #include "file.h"
  29 #include "heap.h"
  30 #include "msdos.h"
  31 #include "options.h"
  32 #include "debugtools.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(dosfs);
  35 DECLARE_DEBUG_CHANNEL(file);
  36
  37 static DOS_FULL_NAME DIR_Windows;
  38 static DOS_FULL_NAME DIR_System;
  39
  40
  41 /***********************************************************************
  42  *           DIR_GetPath
  43  *
  44  * Get a path name from the wine.ini file and make sure it is valid.
  45  */
  46 static int DIR_GetPath( const char *keyname, const char *defval,
  47                         DOS_FULL_NAME *full_name, BOOL warn )
  48 {
  49     char path[MAX_PATHNAME_LEN];
  50     BY_HANDLE_FILE_INFORMATION info;
  51     const char *mess = "does not exist";
  52
  53     PROFILE_GetWineIniString( "wine", keyname, defval, path, sizeof(path) );
  54     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  55         (!FILE_Stat( full_name->long_name, &info ) && (mess=strerror(errno)))||
  56         (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && (mess="not a directory")))
  57     {
  58         if (warn)
  59            MESSAGE("Invalid path '%s' for %s directory: %s\n", path, keyname, mess);
  60         return 0;
  61     }
  62     return 1;
  63 }
  64
  65
  66 /***********************************************************************
  67  *           DIR_Init
  68  */
  69 int DIR_Init(void)
  70 {
  71     char path[MAX_PATHNAME_LEN];
  72     DOS_FULL_NAME tmp_dir, profile_dir;
  73     int drive;
  74     const char *cwd;
  75
  76     if (!getcwd( path, MAX_PATHNAME_LEN ))
  77     {
  78         perror( "Could not get current directory" );
  79         return 0;
  80     }
  81     cwd = path;
  82     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
  83     {
  84         MESSAGE("Warning: could not find wine config [Drive x] entry "
  85             "for current working directory %s; "
  86             "starting in windows directory.\n", cwd );
  87     }
  88     else
  89     {
  90         DRIVE_SetCurrentDrive( drive );
  91         DRIVE_Chdir( drive, cwd );
  92     }
  93
  94     if (!(DIR_GetPath( "windows", "c:\\windows", &DIR_Windows, TRUE )) ||
  95         !(DIR_GetPath( "system", "c:\\windows\\system", &DIR_System, TRUE )) ||
  96         !(DIR_GetPath( "temp", "c:\\windows", &tmp_dir, TRUE )))
  97     {
  98         PROFILE_UsageWineIni();
  99         return 0;
 100     }
 101     if (-1 == access( tmp_dir.long_name, W_OK ))
 102     {
 103         if (errno==EACCES)
 104         {
 105                 MESSAGE("Warning: the temporary directory '%s' (specified in wine configuration file) is not writeable.\n", tmp_dir.long_name);
 106                 PROFILE_UsageWineIni();
 107         }
 108         else
 109                 MESSAGE("Warning: access to temporary directory '%s' failed (%s).\n",
 110                     tmp_dir.long_name, strerror(errno));
 111     }
 112
 113     if (drive == -1)
 114     {
 115         drive = DIR_Windows.drive;
 116         DRIVE_SetCurrentDrive( drive );
 117         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 118     }
 119
 120     PROFILE_GetWineIniString("wine", "path", "c:\\windows;c:\\windows\\system",
 121                              path, sizeof(path) );
 122     if (strchr(path, '/'))
 123     {
 124         MESSAGE("No '/' allowed in [wine] 'Path=' statement of wine config!\n");
 125         PROFILE_UsageWineIni();
 126         ExitProcess(1);
 127     }
 128
 129     /* Set the environment variables */
 130
 131     SetEnvironmentVariableA( "PATH", path );
 132     SetEnvironmentVariableA( "TEMP", tmp_dir.short_name );
 133     SetEnvironmentVariableA( "TMP", tmp_dir.short_name );
 134     SetEnvironmentVariableA( "windir", DIR_Windows.short_name );
 135     SetEnvironmentVariableA( "winsysdir", DIR_System.short_name );
 136
 137     /* set COMSPEC only if it doesn't exist already */
 138     if (!GetEnvironmentVariableA( "COMSPEC", NULL, 0 ))
 139         SetEnvironmentVariableA( "COMSPEC", "c:\\command.com" );
 140
 141     TRACE("WindowsDir = %s (%s)\n",
 142           DIR_Windows.short_name, DIR_Windows.long_name );
 143     TRACE("SystemDir  = %s (%s)\n",
 144           DIR_System.short_name, DIR_System.long_name );
 145     TRACE("TempDir    = %s (%s)\n",
 146           tmp_dir.short_name, tmp_dir.long_name );
 147     TRACE("Path       = %s\n", path );
 148     TRACE("Cwd        = %c:\\%s\n",
 149           'A' + drive, DRIVE_GetDosCwd( drive ) );
 150
 151     if (DIR_GetPath( "profile", "", &profile_dir, FALSE ))
 152     {
 153         TRACE("USERPROFILE= %s\n", profile_dir.short_name );
 154         SetEnvironmentVariableA( "USERPROFILE", profile_dir.short_name );
 155     }
 156
 157     TRACE("SYSTEMROOT = %s\n", DIR_Windows.short_name );
 158     SetEnvironmentVariableA( "SYSTEMROOT", DIR_Windows.short_name );
 159
 160     return 1;
 161 }
 162
 163
 164 /***********************************************************************
 165  *           GetTempPathA   (KERNEL32.@)
 166  */
 167 UINT WINAPI GetTempPathA( UINT count, LPSTR path )
 168 {
 169     UINT ret;
 170     if (!(ret = GetEnvironmentVariableA( "TMP", path, count )))
 171         if (!(ret = GetEnvironmentVariableA( "TEMP", path, count )))
 172             if (!(ret = GetCurrentDirectoryA( count, path )))
 173                 return 0;
 174     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 175     {
 176         path[ret++] = '\\';
 177         path[ret]   = '\0';
 178     }
 179     return ret;
 180 }
 181
 182
 183 /***********************************************************************
 184  *           GetTempPathW   (KERNEL32.@)
 185  */
 186 UINT WINAPI GetTempPathW( UINT count, LPWSTR path )
 187 {
 188     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 189     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 190     UINT ret;
 191     if (!(ret = GetEnvironmentVariableW( tmp, path, count )))
 192         if (!(ret = GetEnvironmentVariableW( temp, path, count )))
 193             if (!(ret = GetCurrentDirectoryW( count, path )))
 194                 return 0;
 195     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 196     {
 197         path[ret++] = '\\';
 198         path[ret]   = '\0';
 199     }
 200     return ret;
 201 }
 202
 203
 204 /***********************************************************************
 205  *           DIR_GetWindowsUnixDir
 206  */
 207 UINT DIR_GetWindowsUnixDir( LPSTR path, UINT count )
 208 {
 209     if (path) lstrcpynA( path, DIR_Windows.long_name, count );
 210     return strlen( DIR_Windows.long_name );
 211 }
 212
 213
 214 /***********************************************************************
 215  *           DIR_GetSystemUnixDir
 216  */
 217 UINT DIR_GetSystemUnixDir( LPSTR path, UINT count )
 218 {
 219     if (path) lstrcpynA( path, DIR_System.long_name, count );
 220     return strlen( DIR_System.long_name );
 221 }
 222
 223
 224 /***********************************************************************
 225  *           GetTempDrive   (KERNEL.92)
 226  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 227  *
 228  * returns:
 229  *   AL: driveletter
 230  *   AH: ':'            - yes, some kernel code even does stosw with
 231  *                            the returned AX.
 232  *   DX: 1 for success
 233  */
 234 UINT WINAPI GetTempDrive( BYTE ignored )
 235 {
 236     char *buffer;
 237     BYTE ret;
 238     UINT len = GetTempPathA( 0, NULL );
 239
 240     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len + 1 )) )
 241         ret = DRIVE_GetCurrentDrive() + 'A';
 242     else
 243     {
 244         /* FIXME: apparently Windows does something with the ignored byte */
 245         if (!GetTempPathA( len, buffer )) buffer[0] = 'C';
 246         ret = toupper(buffer[0]);
 247         HeapFree( GetProcessHeap(), 0, buffer );
 248     }
 249     return MAKELONG( ret | (':' << 8), 1 );
 250 }
 251
 252
 253 /***********************************************************************
 254  *           GetWindowsDirectory   (KERNEL.134)
 255  */
 256 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 257 {
 258     return (UINT16)GetWindowsDirectoryA( path, count );
 259 }
 260
 261
 262 /***********************************************************************
 263  *           GetWindowsDirectoryA   (KERNEL32.@)
 264  */
 265 UINT WINAPI GetWindowsDirectoryA( LPSTR path, UINT count )
 266 {
 267     if (path) lstrcpynA( path, DIR_Windows.short_name, count );
 268     return strlen( DIR_Windows.short_name );
 269 }
 270
 271
 272 /***********************************************************************
 273  *           GetWindowsDirectoryW   (KERNEL32.@)
 274  */
 275 UINT WINAPI GetWindowsDirectoryW( LPWSTR path, UINT count )
 276 {
 277     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, NULL, 0 );
 278     if (path && count)
 279     {
 280         if (!MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, path, count ))
 281             path[count-1] = 0;
 282     }
 283     return len;
 284 }
 285
 286
 287 /***********************************************************************
 288  *           GetSystemWindowsDirectoryA   (KERNEL32.@) W2K, TS4.0SP4
 289  */
 290 UINT WINAPI GetSystemWindowsDirectoryA( LPSTR path, UINT count )
 291 {
 292     return GetWindowsDirectoryA( path, count );
 293 }
 294
 295
 296 /***********************************************************************
 297  *           GetSystemWindowsDirectoryW   (KERNEL32.@) W2K, TS4.0SP4
 298  */
 299 UINT WINAPI GetSystemWindowsDirectoryW( LPWSTR path, UINT count )
 300 {
 301     return GetWindowsDirectoryW( path, count );
 302 }
 303
 304
 305 /***********************************************************************
 306  *           GetSystemDirectory   (KERNEL.135)
 307  */
 308 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 309 {
 310     return (UINT16)GetSystemDirectoryA( path, count );
 311 }
 312
 313
 314 /***********************************************************************
 315  *           GetSystemDirectoryA   (KERNEL32.@)
 316  */
 317 UINT WINAPI GetSystemDirectoryA( LPSTR path, UINT count )
 318 {
 319     if (path) lstrcpynA( path, DIR_System.short_name, count );
 320     return strlen( DIR_System.short_name );
 321 }
 322
 323
 324 /***********************************************************************
 325  *           GetSystemDirectoryW   (KERNEL32.@)
 326  */
 327 UINT WINAPI GetSystemDirectoryW( LPWSTR path, UINT count )
 328 {
 329     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, NULL, 0 );
 330     if (path && count)
 331     {
 332         if (!MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, path, count ))
 333             path[count-1] = 0;
 334     }
 335     return len;
 336 }
 337
 338
 339 /***********************************************************************
 340  *           CreateDirectory   (KERNEL.144)
 341  */
 342 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 343 {
 344     TRACE_(file)("(%s,%p)\n", path, dummy );
 345     return (BOOL16)CreateDirectoryA( path, NULL );
 346 }
 347
 348
 349 /***********************************************************************
 350  *           CreateDirectoryA   (KERNEL32.@)
 351  * RETURNS:
 352  *      TRUE : success
 353  *      FALSE : failure
 354  *              ERROR_DISK_FULL:        on full disk
 355  *              ERROR_ALREADY_EXISTS:   if directory name exists (even as file)
 356  *              ERROR_ACCESS_DENIED:    on permission problems
 357  *              ERROR_FILENAME_EXCED_RANGE: too long filename(s)
 358  */
 359 BOOL WINAPI CreateDirectoryA( LPCSTR path,
 360                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 361 {
 362     DOS_FULL_NAME full_name;
 363
 364     TRACE_(file)("(%s,%p)\n", path, lpsecattribs );
 365     if (DOSFS_GetDevice( path ))
 366     {
 367         TRACE_(file)("cannot use device '%s'!\n",path);
 368         SetLastError( ERROR_ACCESS_DENIED );
 369         return FALSE;
 370     }
 371     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 372     if (mkdir( full_name.long_name, 0777 ) == -1) {
 373         WARN_(file)("Error '%s' trying to create directory '%s'\n", strerror(errno), full_name.long_name);
 374         /* the FILE_SetDosError() generated error codes don't match the
 375          * CreateDirectory ones for some errnos */
 376         switch (errno) {
 377         case EEXIST: SetLastError(ERROR_ALREADY_EXISTS); break;
 378         case ENOSPC: SetLastError(ERROR_DISK_FULL); break;
 379         default: FILE_SetDosError();break;
 380         }
 381         return FALSE;
 382     }
 383     return TRUE;
 384 }
 385
 386
 387 /***********************************************************************
 388  *           CreateDirectoryW   (KERNEL32.@)
 389  */
 390 BOOL WINAPI CreateDirectoryW( LPCWSTR path,
 391                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 392 {
 393     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 394     BOOL ret = CreateDirectoryA( xpath, lpsecattribs );
 395     HeapFree( GetProcessHeap(), 0, xpath );
 396     return ret;
 397 }
 398
 399
 400 /***********************************************************************
 401  *           CreateDirectoryExA   (KERNEL32.@)
 402  */
 403 BOOL WINAPI CreateDirectoryExA( LPCSTR template, LPCSTR path,
 404                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 405 {
 406     return CreateDirectoryA(path,lpsecattribs);
 407 }
 408
 409
 410 /***********************************************************************
 411  *           CreateDirectoryExW   (KERNEL32.@)
 412  */
 413 BOOL WINAPI CreateDirectoryExW( LPCWSTR template, LPCWSTR path,
 414                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 415 {
 416     return CreateDirectoryW(path,lpsecattribs);
 417 }
 418
 419
 420 /***********************************************************************
 421  *           RemoveDirectory   (KERNEL.145)
 422  */
 423 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 424 {
 425     return (BOOL16)RemoveDirectoryA( path );
 426 }
 427
 428
 429 /***********************************************************************
 430  *           RemoveDirectoryA   (KERNEL32.@)
 431  */
 432 BOOL WINAPI RemoveDirectoryA( LPCSTR path )
 433 {
 434     DOS_FULL_NAME full_name;
 435
 436     TRACE_(file)("'%s'\n", path );
 437
 438     if (DOSFS_GetDevice( path ))
 439     {
 440         TRACE_(file)("cannot remove device '%s'!\n", path);
 441         SetLastError( ERROR_FILE_NOT_FOUND );
 442         return FALSE;
 443     }
 444     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 445     if (rmdir( full_name.long_name ) == -1)
 446     {
 447         FILE_SetDosError();
 448         return FALSE;
 449     }
 450     return TRUE;
 451 }
 452
 453
 454 /***********************************************************************
 455  *           RemoveDirectoryW   (KERNEL32.@)
 456  */
 457 BOOL WINAPI RemoveDirectoryW( LPCWSTR path )
 458 {
 459     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 460     BOOL ret = RemoveDirectoryA( xpath );
 461     HeapFree( GetProcessHeap(), 0, xpath );
 462     return ret;
 463 }
 464
 465
 466 /***********************************************************************
 467  *           DIR_TryPath
 468  *
 469  * Helper function for DIR_SearchPath.
 470  */
 471 static BOOL DIR_TryPath( const DOS_FULL_NAME *dir, LPCSTR name,
 472                            DOS_FULL_NAME *full_name )
 473 {
 474     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 475     LPSTR p_s = full_name->short_name + strlen(dir->short_name) + 1;
 476
 477     if ((p_s >= full_name->short_name + sizeof(full_name->short_name) - 14) ||
 478         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 479     {
 480         SetLastError( ERROR_PATH_NOT_FOUND );
 481         return FALSE;
 482     }
 483     if (!DOSFS_FindUnixName( dir->long_name, name, p_l,
 484                    sizeof(full_name->long_name) - (p_l - full_name->long_name),
 485                    p_s, !(DRIVE_GetFlags(dir->drive) & DRIVE_CASE_SENSITIVE) ))
 486         return FALSE;
 487     strcpy( full_name->long_name, dir->long_name );
 488     p_l[-1] = '/';
 489     strcpy( full_name->short_name, dir->short_name );
 490     p_s[-1] = '\\';
 491     return TRUE;
 492 }
 493
 494
 495 /***********************************************************************
 496  *           DIR_TryEnvironmentPath
 497  *
 498  * Helper function for DIR_SearchPath.
 499  * Search in the specified path, or in $PATH if NULL.
 500  */
 501 static BOOL DIR_TryEnvironmentPath( LPCSTR name, DOS_FULL_NAME *full_name, LPCSTR envpath )
 502 {
 503     LPSTR path, next, buffer;
 504     BOOL ret = FALSE;
 505     INT len = strlen(name);
 506     DWORD size;
 507
 508     size = envpath ? strlen(envpath)+1 : GetEnvironmentVariableA( "PATH", NULL, 0 );
 509     if (!size) return FALSE;
 510     if (!(path = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 511     if (envpath) strcpy( path, envpath );
 512     else if (!GetEnvironmentVariableA( "PATH", path, size )) goto done;
 513     next = path;
 514     while (!ret && next)
 515     {
 516         LPSTR cur = next;
 517         while (*cur == ';') cur++;
 518         if (!*cur) break;
 519         next = strchr( cur, ';' );
 520         if (next) *next++ = '\0';
 521         if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(cur) + len + 2)))
 522             goto done;
 523         strcpy( buffer, cur );
 524         strcat( buffer, "\\" );
 525         strcat( buffer, name );
 526         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 527         HeapFree( GetProcessHeap(), 0, buffer );
 528     }
 529
 530 done:
 531     HeapFree( GetProcessHeap(), 0, path );
 532     return ret;
 533 }
 534
 535
 536 /***********************************************************************
 537  *           DIR_TryModulePath
 538  *
 539  * Helper function for DIR_SearchPath.
 540  */
 541 static BOOL DIR_TryModulePath( LPCSTR name, DOS_FULL_NAME *full_name, BOOL win32 )
 542 {
 543     /* FIXME: for now, GetModuleFileNameA can't return more */
 544     /* than OFS_MAXPATHNAME. This may change with Win32. */
 545
 546     char buffer[OFS_MAXPATHNAME];
 547     LPSTR p;
 548
 549     if (!win32)
 550     {
 551         if (!GetCurrentTask()) return FALSE;
 552         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 553                 buffer[0]='\0';
 554     } else {
 555         if (!GetModuleFileNameA( 0, buffer, sizeof(buffer) ))
 556                 buffer[0]='\0';
 557     }
 558     if (!(p = strrchr( buffer, '\\' ))) return FALSE;
 559     if (sizeof(buffer) - (++p - buffer) <= strlen(name)) return FALSE;
 560     strcpy( p, name );
 561     return DOSFS_GetFullName( buffer, TRUE, full_name );
 562 }
 563
 564
 565 /***********************************************************************
 566  *           DIR_SearchPath
 567  *
 568  * Implementation of SearchPathA. 'win32' specifies whether the search
 569  * order is Win16 (module path last) or Win32 (module path first).
 570  *
 571  * FIXME: should return long path names.
 572  */
 573 DWORD DIR_SearchPath( LPCSTR path, LPCSTR name, LPCSTR ext,
 574                       DOS_FULL_NAME *full_name, BOOL win32 )
 575 {
 576     LPCSTR p;
 577     LPSTR tmp = NULL;
 578     BOOL ret = TRUE;
 579
 580     /* First check the supplied parameters */
 581
 582     p = strrchr( name, '.' );
 583     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 584         ext = NULL;  /* Ignore the specified extension */
 585     if (FILE_contains_path (name))
 586         path = NULL;  /* Ignore path if name already contains a path */
 587     if (path && !*path) path = NULL;  /* Ignore empty path */
 588
 589     /* Allocate a buffer for the file name and extension */
 590
 591     if (ext)
 592     {
 593         DWORD len = strlen(name) + strlen(ext);
 594         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 595         {
 596             SetLastError( ERROR_OUTOFMEMORY );
 597             return 0;
 598         }
 599         strcpy( tmp, name );
 600         strcat( tmp, ext );
 601         name = tmp;
 602     }
 603
 604     /* If the name contains an explicit path, everything's easy */
 605
 606     if (FILE_contains_path(name))
 607     {
 608         ret = DOSFS_GetFullName( name, TRUE, full_name );
 609         goto done;
 610     }
 611
 612     /* Search in the specified path */
 613
 614     if (path)
 615     {
 616         ret = DIR_TryEnvironmentPath( name, full_name, path );
 617         goto done;
 618     }
 619
 620     /* Try the path of the current executable (for Win32 search order) */
 621
 622     if (win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 623
 624     /* Try the current directory */
 625
 626     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 627
 628     /* Try the Windows system directory */
 629
 630     if (DIR_TryPath( &DIR_System, name, full_name ))
 631         goto done;
 632
 633     /* Try the Windows directory */
 634
 635     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 636         goto done;
 637
 638     /* Try the path of the current executable (for Win16 search order) */
 639
 640     if (!win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 641
 642     /* Try all directories in path */
 643
 644     ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 645
 646 done:
 647     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 648     return ret;
 649 }
 650
 651
 652 /***********************************************************************
 653  * SearchPathA [KERNEL32.@]
 654  *
 655  * Searches for a specified file in the search path.
 656  *
 657  * PARAMS
 658  *    path      [I] Path to search
 659  *    name      [I] Filename to search for.
 660  *    ext       [I] File extension to append to file name. The first
 661  *                  character must be a period. This parameter is
 662  *                  specified only if the filename given does not
 663  *                  contain an extension.
 664  *    buflen    [I] size of buffer, in characters
 665  *    buffer    [O] buffer for found filename
 666  *    lastpart  [O] address of pointer to last used character in
 667  *                  buffer (the final '\')
 668  *
 669  * RETURNS
 670  *    Success: length of string copied into buffer, not including
 671  *             terminating null character. If the filename found is
 672  *             longer than the length of the buffer, the length of the
 673  *             filename is returned.
 674  *    Failure: Zero
 675  *
 676  * NOTES
 677  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 678  *    (tested on NT 4.0)
 679  */
 680 DWORD WINAPI SearchPathA( LPCSTR path, LPCSTR name, LPCSTR ext, DWORD buflen,
 681                             LPSTR buffer, LPSTR *lastpart )
 682 {
 683     LPSTR p, res;
 684     DOS_FULL_NAME full_name;
 685
 686     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE ))
 687     {
 688         SetLastError(ERROR_FILE_NOT_FOUND);
 689         return 0;
 690     }
 691     lstrcpynA( buffer, full_name.short_name, buflen );
 692     res = full_name.long_name +
 693               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 694     while (*res == '/') res++;
 695     if (buflen)
 696     {
 697         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 698         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 699         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 700     }
 701     TRACE("Returning %d\n", strlen(res) + 3 );
 702     return strlen(res) + 3;
 703 }
 704
 705
 706 /***********************************************************************
 707  *           SearchPathW   (KERNEL32.@)
 708  */
 709 DWORD WINAPI SearchPathW( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 710                             DWORD buflen, LPWSTR buffer, LPWSTR *lastpart )
 711 {
 712     LPWSTR p;
 713     LPSTR res;
 714     DOS_FULL_NAME full_name;
 715
 716     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 717     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
 718     LPSTR extA  = HEAP_strdupWtoA( GetProcessHeap(), 0, ext );
 719     DWORD ret = DIR_SearchPath( pathA, nameA, extA, &full_name, TRUE );
 720     HeapFree( GetProcessHeap(), 0, extA );
 721     HeapFree( GetProcessHeap(), 0, nameA );
 722     HeapFree( GetProcessHeap(), 0, pathA );
 723     if (!ret) return 0;
 724
 725     if (buflen > 0 && !MultiByteToWideChar( CP_ACP, 0, full_name.short_name, -1, buffer, buflen ))
 726         buffer[buflen-1] = 0;
 727     res = full_name.long_name +
 728               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 729     while (*res == '/') res++;
 730     if (buflen)
 731     {
 732         if (buflen > 3)
 733         {
 734             if (!MultiByteToWideChar( CP_ACP, 0, res, -1, buffer+3, buflen-3 ))
 735                 buffer[buflen-1] = 0;
 736         }
 737         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 738         if (lastpart)
 739         {
 740             for (p = *lastpart = buffer; *p; p++)
 741                 if (*p == '\\') *lastpart = p + 1;
 742         }
 743     }
 744     return strlen(res) + 3;
 745 }
 746
 747
 748 /***********************************************************************
 749  *           search_alternate_path
 750  *
 751  *
 752  * FIXME: should return long path names.?
 753  */
 754 static BOOL search_alternate_path(LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 755                                   DOS_FULL_NAME *full_name)
 756 {
 757     LPCSTR p;
 758     LPSTR tmp = NULL;
 759     BOOL ret = TRUE;
 760
 761     /* First check the supplied parameters */
 762
 763     p = strrchr( name, '.' );
 764     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 765         ext = NULL;  /* Ignore the specified extension */
 766
 767     /* Allocate a buffer for the file name and extension */
 768
 769     if (ext)
 770     {
 771         DWORD len = strlen(name) + strlen(ext);
 772         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 773         {
 774             SetLastError( ERROR_OUTOFMEMORY );
 775             return 0;
 776         }
 777         strcpy( tmp, name );
 778         strcat( tmp, ext );
 779         name = tmp;
 780     }
 781
 782     if (DIR_TryEnvironmentPath (name, full_name, dll_path))
 783         ;
 784     else if (DOSFS_GetFullName (name, TRUE, full_name)) /* current dir */
 785         ;
 786     else if (DIR_TryPath (&DIR_System, name, full_name)) /* System dir */
 787         ;
 788     else if (DIR_TryPath (&DIR_Windows, name, full_name)) /* Windows dir */
 789         ;
 790     else
 791         ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 792
 793     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 794     return ret;
 795 }
 796
 797
 798 /***********************************************************************
 799  * DIR_SearchAlternatePath
 800  *
 801  * Searches for a specified file in the search path.
 802  *
 803  * PARAMS
 804  *    dll_path  [I] Path to search
 805  *    name      [I] Filename to search for.
 806  *    ext       [I] File extension to append to file name. The first
 807  *                  character must be a period. This parameter is
 808  *                  specified only if the filename given does not
 809  *                  contain an extension.
 810  *    buflen    [I] size of buffer, in characters
 811  *    buffer    [O] buffer for found filename
 812  *    lastpart  [O] address of pointer to last used character in
 813  *                  buffer (the final '\') (May be NULL)
 814  *
 815  * RETURNS
 816  *    Success: length of string copied into buffer, not including
 817  *             terminating null character. If the filename found is
 818  *             longer than the length of the buffer, the length of the
 819  *             filename is returned.
 820  *    Failure: Zero
 821  *
 822  * NOTES
 823  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 824  */
 825 DWORD DIR_SearchAlternatePath( LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 826                                DWORD buflen, LPSTR buffer, LPSTR *lastpart )
 827 {
 828     LPSTR p, res;
 829     DOS_FULL_NAME full_name;
 830
 831     if (!search_alternate_path( dll_path, name, ext, &full_name))
 832     {
 833         SetLastError(ERROR_FILE_NOT_FOUND);
 834         return 0;
 835     }
 836     lstrcpynA( buffer, full_name.short_name, buflen );
 837     res = full_name.long_name +
 838               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 839     while (*res == '/') res++;
 840     if (buflen)
 841     {
 842         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 843         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 844         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 845     }
 846     TRACE("Returning %d\n", strlen(res) + 3 );
 847     return strlen(res) + 3;
 848 }