files/directory.c

   1 /*
   2  * DOS directories functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <ctype.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #ifdef HAVE_SYS_ERRNO_H
  32 #include <sys/errno.h>
  33 #endif
  34
  35 #include "winbase.h"
  36 #include "wine/winbase16.h"
  37 #include "windef.h"
  38 #include "wingdi.h"
  39 #include "wine/winuser16.h"
  40 #include "winerror.h"
  41 #include "winreg.h"
  42 #include "drive.h"
  43 #include "file.h"
  44 #include "heap.h"
  45 #include "msdos.h"
  46 #include "wine/debug.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(dosfs);
  49 WINE_DECLARE_DEBUG_CHANNEL(file);
  50
  51 static DOS_FULL_NAME DIR_Windows;
  52 static DOS_FULL_NAME DIR_System;
  53
  54
  55 /***********************************************************************
  56  *           DIR_GetPath
  57  *
  58  * Get a path name from the wine.ini file and make sure it is valid.
  59  */
  60 static int DIR_GetPath( const char *keyname, const char *defval,
  61                         DOS_FULL_NAME *full_name, char * longname, BOOL warn )
  62 {
  63     char path[MAX_PATHNAME_LEN];
  64     BY_HANDLE_FILE_INFORMATION info;
  65     const char *mess = "does not exist";
  66
  67     PROFILE_GetWineIniString( "wine", keyname, defval, path, sizeof(path) );
  68     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  69         (!FILE_Stat( full_name->long_name, &info ) && (mess=strerror(errno)))||
  70         (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && (mess="not a directory")) ||
  71         (!(GetLongPathNameA(full_name->short_name, longname, MAX_PATHNAME_LEN))) )
  72     {
  73         if (warn)
  74            MESSAGE("Invalid path '%s' for %s directory: %s\n", path, keyname, mess);
  75         return 0;
  76     }
  77     return 1;
  78 }
  79
  80
  81 /***********************************************************************
  82  *           DIR_Init
  83  */
  84 int DIR_Init(void)
  85 {
  86     char path[MAX_PATHNAME_LEN];
  87     char longpath[MAX_PATHNAME_LEN];
  88     DOS_FULL_NAME tmp_dir, profile_dir;
  89     int drive;
  90     const char *cwd;
  91
  92     if (!getcwd( path, MAX_PATHNAME_LEN ))
  93     {
  94         perror( "Could not get current directory" );
  95         return 0;
  96     }
  97     cwd = path;
  98     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
  99     {
 100         MESSAGE("Warning: could not find wine config [Drive x] entry "
 101             "for current working directory %s; "
 102             "starting in windows directory.\n", cwd );
 103     }
 104     else
 105     {
 106         DRIVE_SetCurrentDrive( drive );
 107         DRIVE_Chdir( drive, cwd );
 108     }
 109
 110     if (!(DIR_GetPath( "windows", "c:\\windows", &DIR_Windows, longpath, TRUE )) ||
 111         !(DIR_GetPath( "system", "c:\\windows\\system", &DIR_System, longpath, TRUE )) ||
 112         !(DIR_GetPath( "temp", "c:\\windows", &tmp_dir, longpath, TRUE )))
 113     {
 114         PROFILE_UsageWineIni();
 115         return 0;
 116     }
 117     if (-1 == access( tmp_dir.long_name, W_OK ))
 118     {
 119         if (errno==EACCES)
 120         {
 121                 MESSAGE("Warning: the temporary directory '%s' (specified in wine configuration file) is not writeable.\n", tmp_dir.long_name);
 122                 PROFILE_UsageWineIni();
 123         }
 124         else
 125                 MESSAGE("Warning: access to temporary directory '%s' failed (%s).\n",
 126                     tmp_dir.long_name, strerror(errno));
 127     }
 128
 129     if (drive == -1)
 130     {
 131         drive = DIR_Windows.drive;
 132         DRIVE_SetCurrentDrive( drive );
 133         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 134     }
 135
 136     PROFILE_GetWineIniString("wine", "path", "c:\\windows;c:\\windows\\system",
 137                              path, sizeof(path) );
 138     if (strchr(path, '/'))
 139     {
 140         MESSAGE("Fix your wine config to use DOS drive syntax in [wine] 'Path=' statement! (no '/' allowed)\n");
 141         PROFILE_UsageWineIni();
 142         ExitProcess(1);
 143     }
 144
 145     /* Set the environment variables */
 146
 147     SetEnvironmentVariableA( "PATH", path );
 148     SetEnvironmentVariableA( "TEMP", tmp_dir.short_name );
 149     SetEnvironmentVariableA( "TMP", tmp_dir.short_name );
 150     SetEnvironmentVariableA( "windir", DIR_Windows.short_name );
 151     SetEnvironmentVariableA( "winsysdir", DIR_System.short_name );
 152
 153     /* set COMSPEC only if it doesn't exist already */
 154     if (!GetEnvironmentVariableA( "COMSPEC", NULL, 0 ))
 155         SetEnvironmentVariableA( "COMSPEC", "c:\\command.com" );
 156
 157     TRACE("WindowsDir = %s (%s)\n",
 158           DIR_Windows.short_name, DIR_Windows.long_name );
 159     TRACE("SystemDir  = %s (%s)\n",
 160           DIR_System.short_name, DIR_System.long_name );
 161     TRACE("TempDir    = %s (%s)\n",
 162           tmp_dir.short_name, tmp_dir.long_name );
 163     TRACE("Path       = %s\n", path );
 164     TRACE("Cwd        = %c:\\%s\n",
 165           'A' + drive, DRIVE_GetDosCwd( drive ) );
 166
 167     if (DIR_GetPath( "profile", "", &profile_dir, longpath, FALSE ))
 168     {
 169         TRACE("USERPROFILE= %s\n", longpath );
 170         SetEnvironmentVariableA( "USERPROFILE", longpath );
 171     }
 172
 173     TRACE("SYSTEMROOT = %s\n", DIR_Windows.short_name );
 174     SetEnvironmentVariableA( "SYSTEMROOT", DIR_Windows.short_name );
 175
 176     return 1;
 177 }
 178
 179
 180 /***********************************************************************
 181  *           GetTempPathA   (KERNEL32.@)
 182  */
 183 UINT WINAPI GetTempPathA( UINT count, LPSTR path )
 184 {
 185     UINT ret;
 186     if (!(ret = GetEnvironmentVariableA( "TMP", path, count )))
 187         if (!(ret = GetEnvironmentVariableA( "TEMP", path, count )))
 188             if (!(ret = GetCurrentDirectoryA( count, path )))
 189                 return 0;
 190     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 191     {
 192         path[ret++] = '\\';
 193         path[ret]   = '\0';
 194     }
 195     return ret;
 196 }
 197
 198
 199 /***********************************************************************
 200  *           GetTempPathW   (KERNEL32.@)
 201  */
 202 UINT WINAPI GetTempPathW( UINT count, LPWSTR path )
 203 {
 204     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 205     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 206     UINT ret;
 207     if (!(ret = GetEnvironmentVariableW( tmp, path, count )))
 208         if (!(ret = GetEnvironmentVariableW( temp, path, count )))
 209             if (!(ret = GetCurrentDirectoryW( count, path )))
 210                 return 0;
 211     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 212     {
 213         path[ret++] = '\\';
 214         path[ret]   = '\0';
 215     }
 216     return ret;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           DIR_GetWindowsUnixDir
 222  */
 223 UINT DIR_GetWindowsUnixDir( LPSTR path, UINT count )
 224 {
 225     if (path) lstrcpynA( path, DIR_Windows.long_name, count );
 226     return strlen( DIR_Windows.long_name );
 227 }
 228
 229
 230 /***********************************************************************
 231  *           DIR_GetSystemUnixDir
 232  */
 233 UINT DIR_GetSystemUnixDir( LPSTR path, UINT count )
 234 {
 235     if (path) lstrcpynA( path, DIR_System.long_name, count );
 236     return strlen( DIR_System.long_name );
 237 }
 238
 239
 240 /***********************************************************************
 241  *           GetTempDrive   (KERNEL.92)
 242  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 243  *
 244  * returns:
 245  *   AL: driveletter
 246  *   AH: ':'            - yes, some kernel code even does stosw with
 247  *                            the returned AX.
 248  *   DX: 1 for success
 249  */
 250 UINT WINAPI GetTempDrive( BYTE ignored )
 251 {
 252     char *buffer;
 253     BYTE ret;
 254     UINT len = GetTempPathA( 0, NULL );
 255
 256     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len + 1 )) )
 257         ret = DRIVE_GetCurrentDrive() + 'A';
 258     else
 259     {
 260         /* FIXME: apparently Windows does something with the ignored byte */
 261         if (!GetTempPathA( len, buffer )) buffer[0] = 'C';
 262         ret = toupper(buffer[0]);
 263         HeapFree( GetProcessHeap(), 0, buffer );
 264     }
 265     return MAKELONG( ret | (':' << 8), 1 );
 266 }
 267
 268
 269 /***********************************************************************
 270  *           GetWindowsDirectory   (KERNEL.134)
 271  */
 272 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 273 {
 274     return (UINT16)GetWindowsDirectoryA( path, count );
 275 }
 276
 277
 278 /***********************************************************************
 279  *           GetWindowsDirectoryA   (KERNEL32.@)
 280  *
 281  * See comment for GetWindowsDirectoryW.
 282  */
 283 UINT WINAPI GetWindowsDirectoryA( LPSTR path, UINT count )
 284 {
 285     UINT len = strlen( DIR_Windows.short_name ) + 1;
 286     if (path && count >= len)
 287     {
 288         strcpy( path, DIR_Windows.short_name );
 289         len--;
 290     }
 291     return len;
 292 }
 293
 294
 295 /***********************************************************************
 296  *           GetWindowsDirectoryW   (KERNEL32.@)
 297  *
 298  * Return value:
 299  * If buffer is large enough to hold full path and terminating '\0' character
 300  * function copies path to buffer and returns length of the path without '\0'.
 301  * Otherwise function returns required size including '\0' character and
 302  * does not touch the buffer.
 303  */
 304 UINT WINAPI GetWindowsDirectoryW( LPWSTR path, UINT count )
 305 {
 306     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, NULL, 0 );
 307     if (path && count >= len)
 308     {
 309         MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, path, count );
 310         len--;
 311     }
 312     return len;
 313 }
 314
 315
 316 /***********************************************************************
 317  *           GetSystemWindowsDirectoryA   (KERNEL32.@) W2K, TS4.0SP4
 318  */
 319 UINT WINAPI GetSystemWindowsDirectoryA( LPSTR path, UINT count )
 320 {
 321     return GetWindowsDirectoryA( path, count );
 322 }
 323
 324
 325 /***********************************************************************
 326  *           GetSystemWindowsDirectoryW   (KERNEL32.@) W2K, TS4.0SP4
 327  */
 328 UINT WINAPI GetSystemWindowsDirectoryW( LPWSTR path, UINT count )
 329 {
 330     return GetWindowsDirectoryW( path, count );
 331 }
 332
 333
 334 /***********************************************************************
 335  *           GetSystemDirectory   (KERNEL.135)
 336  */
 337 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 338 {
 339     return (UINT16)GetSystemDirectoryA( path, count );
 340 }
 341
 342
 343 /***********************************************************************
 344  *           GetSystemDirectoryA   (KERNEL32.@)
 345  *
 346  * See comment for GetWindowsDirectoryW.
 347  */
 348 UINT WINAPI GetSystemDirectoryA( LPSTR path, UINT count )
 349 {
 350     UINT len = strlen( DIR_System.short_name ) + 1;
 351     if (path && count >= len)
 352     {
 353         strcpy( path, DIR_System.short_name );
 354         len--;
 355     }
 356     return len;
 357 }
 358
 359
 360 /***********************************************************************
 361  *           GetSystemDirectoryW   (KERNEL32.@)
 362  *
 363  * See comment for GetWindowsDirectoryW.
 364  */
 365 UINT WINAPI GetSystemDirectoryW( LPWSTR path, UINT count )
 366 {
 367     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, NULL, 0 );
 368     if (path && count >= len)
 369     {
 370         MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, path, count );
 371         len--;
 372     }
 373     return len;
 374 }
 375
 376
 377 /***********************************************************************
 378  *           CreateDirectory   (KERNEL.144)
 379  */
 380 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 381 {
 382     TRACE_(file)("(%s,%p)\n", path, dummy );
 383     return (BOOL16)CreateDirectoryA( path, NULL );
 384 }
 385
 386
 387 /***********************************************************************
 388  *           CreateDirectoryA   (KERNEL32.@)
 389  * RETURNS:
 390  *      TRUE : success
 391  *      FALSE : failure
 392  *              ERROR_DISK_FULL:        on full disk
 393  *              ERROR_ALREADY_EXISTS:   if directory name exists (even as file)
 394  *              ERROR_ACCESS_DENIED:    on permission problems
 395  *              ERROR_FILENAME_EXCED_RANGE: too long filename(s)
 396  */
 397 BOOL WINAPI CreateDirectoryA( LPCSTR path,
 398                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 399 {
 400     DOS_FULL_NAME full_name;
 401
 402     TRACE_(file)("(%s,%p)\n", path, lpsecattribs );
 403     if (DOSFS_GetDevice( path ))
 404     {
 405         TRACE_(file)("cannot use device '%s'!\n",path);
 406         SetLastError( ERROR_ACCESS_DENIED );
 407         return FALSE;
 408     }
 409     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 410     if (mkdir( full_name.long_name, 0777 ) == -1) {
 411         WARN_(file)("Error '%s' trying to create directory '%s'\n", strerror(errno), full_name.long_name);
 412         /* the FILE_SetDosError() generated error codes don't match the
 413          * CreateDirectory ones for some errnos */
 414         switch (errno) {
 415         case EEXIST: SetLastError(ERROR_ALREADY_EXISTS); break;
 416         case ENOSPC: SetLastError(ERROR_DISK_FULL); break;
 417         default: FILE_SetDosError();break;
 418         }
 419         return FALSE;
 420     }
 421     return TRUE;
 422 }
 423
 424
 425 /***********************************************************************
 426  *           CreateDirectoryW   (KERNEL32.@)
 427  */
 428 BOOL WINAPI CreateDirectoryW( LPCWSTR path,
 429                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 430 {
 431     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 432     BOOL ret = CreateDirectoryA( xpath, lpsecattribs );
 433     HeapFree( GetProcessHeap(), 0, xpath );
 434     return ret;
 435 }
 436
 437
 438 /***********************************************************************
 439  *           CreateDirectoryExA   (KERNEL32.@)
 440  */
 441 BOOL WINAPI CreateDirectoryExA( LPCSTR template, LPCSTR path,
 442                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 443 {
 444     return CreateDirectoryA(path,lpsecattribs);
 445 }
 446
 447
 448 /***********************************************************************
 449  *           CreateDirectoryExW   (KERNEL32.@)
 450  */
 451 BOOL WINAPI CreateDirectoryExW( LPCWSTR template, LPCWSTR path,
 452                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 453 {
 454     return CreateDirectoryW(path,lpsecattribs);
 455 }
 456
 457
 458 /***********************************************************************
 459  *           RemoveDirectory   (KERNEL.145)
 460  */
 461 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 462 {
 463     return (BOOL16)RemoveDirectoryA( path );
 464 }
 465
 466
 467 /***********************************************************************
 468  *           RemoveDirectoryA   (KERNEL32.@)
 469  */
 470 BOOL WINAPI RemoveDirectoryA( LPCSTR path )
 471 {
 472     DOS_FULL_NAME full_name;
 473
 474     TRACE_(file)("'%s'\n", path );
 475
 476     if (DOSFS_GetDevice( path ))
 477     {
 478         TRACE_(file)("cannot remove device '%s'!\n", path);
 479         SetLastError( ERROR_FILE_NOT_FOUND );
 480         return FALSE;
 481     }
 482     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 483     if (rmdir( full_name.long_name ) == -1)
 484     {
 485         FILE_SetDosError();
 486         return FALSE;
 487     }
 488     return TRUE;
 489 }
 490
 491
 492 /***********************************************************************
 493  *           RemoveDirectoryW   (KERNEL32.@)
 494  */
 495 BOOL WINAPI RemoveDirectoryW( LPCWSTR path )
 496 {
 497     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 498     BOOL ret = RemoveDirectoryA( xpath );
 499     HeapFree( GetProcessHeap(), 0, xpath );
 500     return ret;
 501 }
 502
 503
 504 /***********************************************************************
 505  *           DIR_TryPath
 506  *
 507  * Helper function for DIR_SearchPath.
 508  */
 509 static BOOL DIR_TryPath( const DOS_FULL_NAME *dir, LPCSTR name,
 510                            DOS_FULL_NAME *full_name )
 511 {
 512     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 513     LPSTR p_s = full_name->short_name + strlen(dir->short_name) + 1;
 514
 515     if ((p_s >= full_name->short_name + sizeof(full_name->short_name) - 14) ||
 516         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 517     {
 518         SetLastError( ERROR_PATH_NOT_FOUND );
 519         return FALSE;
 520     }
 521     if (!DOSFS_FindUnixName( dir->long_name, name, p_l,
 522                    sizeof(full_name->long_name) - (p_l - full_name->long_name),
 523                    p_s, !(DRIVE_GetFlags(dir->drive) & DRIVE_CASE_SENSITIVE) ))
 524         return FALSE;
 525     strcpy( full_name->long_name, dir->long_name );
 526     p_l[-1] = '/';
 527     strcpy( full_name->short_name, dir->short_name );
 528     p_s[-1] = '\\';
 529     return TRUE;
 530 }
 531
 532 static BOOL DIR_SearchSemicolonedPaths(LPCSTR name, DOS_FULL_NAME *full_name, LPSTR pathlist)
 533 {
 534     LPSTR next, buffer = NULL;
 535     INT len = strlen(name), newlen, currlen = 0;
 536     BOOL ret = FALSE;
 537
 538     next = pathlist;
 539     while (!ret && next)
 540     {
 541         LPSTR cur = next;
 542         while (*cur == ';') cur++;
 543         if (!*cur) break;
 544         next = strchr( cur, ';' );
 545         if (next) *next++ = '\0';
 546         newlen = strlen(cur) + len + 2;
 547         if (newlen > currlen)
 548         {
 549             if (!(buffer = HeapReAlloc( GetProcessHeap(), 0, buffer, newlen)))
 550                 goto done;
 551             currlen = newlen;
 552         }
 553         strcpy( buffer, cur );
 554         strcat( buffer, "\\" );
 555         strcat( buffer, name );
 556         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 557     }
 558 done:
 559     HeapFree( GetProcessHeap(), 0, buffer );
 560     return ret;
 561 }
 562
 563
 564 /***********************************************************************
 565  *           DIR_TryEnvironmentPath
 566  *
 567  * Helper function for DIR_SearchPath.
 568  * Search in the specified path, or in $PATH if NULL.
 569  */
 570 static BOOL DIR_TryEnvironmentPath( LPCSTR name, DOS_FULL_NAME *full_name, LPCSTR envpath )
 571 {
 572     LPSTR path;
 573     BOOL ret = FALSE;
 574     DWORD size;
 575
 576     size = envpath ? strlen(envpath)+1 : GetEnvironmentVariableA( "PATH", NULL, 0 );
 577     if (!size) return FALSE;
 578     if (!(path = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 579     if (envpath) strcpy( path, envpath );
 580     else if (!GetEnvironmentVariableA( "PATH", path, size )) goto done;
 581
 582     ret = DIR_SearchSemicolonedPaths(name, full_name, path);
 583
 584 done:
 585     HeapFree( GetProcessHeap(), 0, path );
 586     return ret;
 587 }
 588
 589
 590 /***********************************************************************
 591  *           DIR_TryModulePath
 592  *
 593  * Helper function for DIR_SearchPath.
 594  */
 595 static BOOL DIR_TryModulePath( LPCSTR name, DOS_FULL_NAME *full_name, BOOL win32 )
 596 {
 597     /* FIXME: for now, GetModuleFileNameA can't return more */
 598     /* than OFS_MAXPATHNAME. This may change with Win32. */
 599
 600     char buffer[OFS_MAXPATHNAME];
 601     LPSTR p;
 602
 603     if (!win32)
 604     {
 605         if (!GetCurrentTask()) return FALSE;
 606         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 607                 buffer[0]='\0';
 608     } else {
 609         if (!GetModuleFileNameA( 0, buffer, sizeof(buffer) ))
 610                 buffer[0]='\0';
 611     }
 612     if (!(p = strrchr( buffer, '\\' ))) return FALSE;
 613     if (sizeof(buffer) - (++p - buffer) <= strlen(name)) return FALSE;
 614     strcpy( p, name );
 615     return DOSFS_GetFullName( buffer, TRUE, full_name );
 616 }
 617
 618
 619 /***********************************************************************
 620  *           DIR_TryAppPath
 621  *
 622  * Helper function for DIR_SearchPath.
 623  */
 624 static BOOL DIR_TryAppPath( LPCSTR name, DOS_FULL_NAME *full_name )
 625 {
 626     HKEY hkAppPaths = 0, hkApp = 0;
 627     char lpAppName[MAX_PATHNAME_LEN], lpAppPaths[MAX_PATHNAME_LEN];
 628     LPSTR lpFileName;
 629     BOOL res = FALSE;
 630     DWORD type, count;
 631
 632     if (RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\Windows\\CurrentVersion\\App Paths", &hkAppPaths) != ERROR_SUCCESS)
 633         return FALSE;
 634
 635     if (GetModuleFileNameA(0, lpAppName, sizeof(lpAppName)) == 0)
 636     {
 637         WARN("huh, module not found ??\n");
 638         goto end;
 639     }
 640     lpFileName = strrchr(lpAppName, '\\');
 641     if (!lpFileName)
 642         goto end;
 643     else lpFileName++; /* skip '\\' */
 644     if (RegOpenKeyA(hkAppPaths, lpFileName, &hkApp) != ERROR_SUCCESS)
 645         goto end;
 646     count = sizeof(lpAppPaths);
 647     if (RegQueryValueExA(hkApp, "Path", 0, &type, (LPBYTE)lpAppPaths, &count) != ERROR_SUCCESS)
 648         goto end;
 649     TRACE("successfully opened App Paths for '%s'\n", lpFileName);
 650
 651     res = DIR_SearchSemicolonedPaths(name, full_name, lpAppPaths);
 652 end:
 653     if (hkApp)
 654         RegCloseKey(hkApp);
 655     if (hkAppPaths)
 656         RegCloseKey(hkAppPaths);
 657     return res;
 658 }
 659
 660 /***********************************************************************
 661  *           DIR_SearchPath
 662  *
 663  * Implementation of SearchPathA. 'win32' specifies whether the search
 664  * order is Win16 (module path last) or Win32 (module path first).
 665  *
 666  * FIXME: should return long path names.
 667  */
 668 DWORD DIR_SearchPath( LPCSTR path, LPCSTR name, LPCSTR ext,
 669                       DOS_FULL_NAME *full_name, BOOL win32 )
 670 {
 671     LPCSTR p;
 672     LPSTR tmp = NULL;
 673     BOOL ret = TRUE;
 674
 675     /* First check the supplied parameters */
 676
 677     p = strrchr( name, '.' );
 678     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 679         ext = NULL;  /* Ignore the specified extension */
 680     if (FILE_contains_path (name))
 681         path = NULL;  /* Ignore path if name already contains a path */
 682     if (path && !*path) path = NULL;  /* Ignore empty path */
 683
 684     /* Allocate a buffer for the file name and extension */
 685
 686     if (ext)
 687     {
 688         DWORD len = strlen(name) + strlen(ext);
 689         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 690         {
 691             SetLastError( ERROR_OUTOFMEMORY );
 692             return 0;
 693         }
 694         strcpy( tmp, name );
 695         strcat( tmp, ext );
 696         name = tmp;
 697     }
 698
 699     /* If the name contains an explicit path, everything's easy */
 700
 701     if (FILE_contains_path(name))
 702     {
 703         ret = DOSFS_GetFullName( name, TRUE, full_name );
 704         goto done;
 705     }
 706
 707     /* Search in the specified path */
 708
 709     if (path)
 710     {
 711         ret = DIR_TryEnvironmentPath( name, full_name, path );
 712         goto done;
 713     }
 714
 715     /* Try the path of the current executable (for Win32 search order) */
 716
 717     if (win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 718
 719     /* Try the current directory */
 720
 721     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 722
 723     /* Try the Windows system directory */
 724
 725     if (DIR_TryPath( &DIR_System, name, full_name ))
 726         goto done;
 727
 728     /* Try the Windows directory */
 729
 730     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 731         goto done;
 732
 733     /* Try the path of the current executable (for Win16 search order) */
 734
 735     if (!win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 736
 737     /* Try the "App Paths" entry if existing (undocumented ??) */
 738     if (DIR_TryAppPath(name, full_name))
 739         goto done;
 740
 741     /* Try all directories in path */
 742
 743     ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 744
 745 done:
 746     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 747     return ret;
 748 }
 749
 750
 751 /***********************************************************************
 752  * SearchPathA [KERNEL32.@]
 753  *
 754  * Searches for a specified file in the search path.
 755  *
 756  * PARAMS
 757  *    path      [I] Path to search
 758  *    name      [I] Filename to search for.
 759  *    ext       [I] File extension to append to file name. The first
 760  *                  character must be a period. This parameter is
 761  *                  specified only if the filename given does not
 762  *                  contain an extension.
 763  *    buflen    [I] size of buffer, in characters
 764  *    buffer    [O] buffer for found filename
 765  *    lastpart  [O] address of pointer to last used character in
 766  *                  buffer (the final '\')
 767  *
 768  * RETURNS
 769  *    Success: length of string copied into buffer, not including
 770  *             terminating null character. If the filename found is
 771  *             longer than the length of the buffer, the length of the
 772  *             filename is returned.
 773  *    Failure: Zero
 774  *
 775  * NOTES
 776  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 777  *    (tested on NT 4.0)
 778  */
 779 DWORD WINAPI SearchPathA( LPCSTR path, LPCSTR name, LPCSTR ext, DWORD buflen,
 780                             LPSTR buffer, LPSTR *lastpart )
 781 {
 782     LPSTR p, res;
 783     DOS_FULL_NAME full_name;
 784
 785     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE ))
 786     {
 787         SetLastError(ERROR_FILE_NOT_FOUND);
 788         return 0;
 789     }
 790     lstrcpynA( buffer, full_name.short_name, buflen );
 791     res = full_name.long_name +
 792               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 793     while (*res == '/') res++;
 794     if (buflen)
 795     {
 796         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 797         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 798         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 799     }
 800     TRACE("Returning %d\n", strlen(res) + 3 );
 801     return strlen(res) + 3;
 802 }
 803
 804
 805 /***********************************************************************
 806  *           SearchPathW   (KERNEL32.@)
 807  */
 808 DWORD WINAPI SearchPathW( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 809                             DWORD buflen, LPWSTR buffer, LPWSTR *lastpart )
 810 {
 811     LPWSTR p;
 812     LPSTR res;
 813     DOS_FULL_NAME full_name;
 814
 815     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 816     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
 817     LPSTR extA  = HEAP_strdupWtoA( GetProcessHeap(), 0, ext );
 818     DWORD ret = DIR_SearchPath( pathA, nameA, extA, &full_name, TRUE );
 819     HeapFree( GetProcessHeap(), 0, extA );
 820     HeapFree( GetProcessHeap(), 0, nameA );
 821     HeapFree( GetProcessHeap(), 0, pathA );
 822     if (!ret) return 0;
 823
 824     if (buflen > 0 && !MultiByteToWideChar( CP_ACP, 0, full_name.short_name, -1, buffer, buflen ))
 825         buffer[buflen-1] = 0;
 826     res = full_name.long_name +
 827               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 828     while (*res == '/') res++;
 829     if (buflen)
 830     {
 831         if (buflen > 3)
 832         {
 833             if (!MultiByteToWideChar( CP_ACP, 0, res, -1, buffer+3, buflen-3 ))
 834                 buffer[buflen-1] = 0;
 835         }
 836         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 837         if (lastpart)
 838         {
 839             for (p = *lastpart = buffer; *p; p++)
 840                 if (*p == '\\') *lastpart = p + 1;
 841         }
 842     }
 843     return strlen(res) + 3;
 844 }
 845
 846
 847 /***********************************************************************
 848  *           search_alternate_path
 849  *
 850  *
 851  * FIXME: should return long path names.?
 852  */
 853 static BOOL search_alternate_path(LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 854                                   DOS_FULL_NAME *full_name)
 855 {
 856     LPCSTR p;
 857     LPSTR tmp = NULL;
 858     BOOL ret = TRUE;
 859
 860     /* First check the supplied parameters */
 861
 862     p = strrchr( name, '.' );
 863     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 864         ext = NULL;  /* Ignore the specified extension */
 865
 866     /* Allocate a buffer for the file name and extension */
 867
 868     if (ext)
 869     {
 870         DWORD len = strlen(name) + strlen(ext);
 871         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 872         {
 873             SetLastError( ERROR_OUTOFMEMORY );
 874             return 0;
 875         }
 876         strcpy( tmp, name );
 877         strcat( tmp, ext );
 878         name = tmp;
 879     }
 880
 881     if (DIR_TryEnvironmentPath (name, full_name, dll_path))
 882         ;
 883     else if (DOSFS_GetFullName (name, TRUE, full_name)) /* current dir */
 884         ;
 885     else if (DIR_TryPath (&DIR_System, name, full_name)) /* System dir */
 886         ;
 887     else if (DIR_TryPath (&DIR_Windows, name, full_name)) /* Windows dir */
 888         ;
 889     else
 890         ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 891
 892     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 893     return ret;
 894 }
 895
 896
 897 /***********************************************************************
 898  * DIR_SearchAlternatePath
 899  *
 900  * Searches for a specified file in the search path.
 901  *
 902  * PARAMS
 903  *    dll_path  [I] Path to search
 904  *    name      [I] Filename to search for.
 905  *    ext       [I] File extension to append to file name. The first
 906  *                  character must be a period. This parameter is
 907  *                  specified only if the filename given does not
 908  *                  contain an extension.
 909  *    buflen    [I] size of buffer, in characters
 910  *    buffer    [O] buffer for found filename
 911  *    lastpart  [O] address of pointer to last used character in
 912  *                  buffer (the final '\') (May be NULL)
 913  *
 914  * RETURNS
 915  *    Success: length of string copied into buffer, not including
 916  *             terminating null character. If the filename found is
 917  *             longer than the length of the buffer, the length of the
 918  *             filename is returned.
 919  *    Failure: Zero
 920  *
 921  * NOTES
 922  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 923  */
 924 DWORD DIR_SearchAlternatePath( LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 925                                DWORD buflen, LPSTR buffer, LPSTR *lastpart )
 926 {
 927     LPSTR p, res;
 928     DOS_FULL_NAME full_name;
 929
 930     if (!search_alternate_path( dll_path, name, ext, &full_name))
 931     {
 932         SetLastError(ERROR_FILE_NOT_FOUND);
 933         return 0;
 934     }
 935     lstrcpynA( buffer, full_name.short_name, buflen );
 936     res = full_name.long_name +
 937               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 938     while (*res == '/') res++;
 939     if (buflen)
 940     {
 941         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 942         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 943         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 944     }
 945     TRACE("Returning %d\n", strlen(res) + 3 );
 946     return strlen(res) + 3;
 947 }