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 "options.h"
  47 #include "wine/debug.h"
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(dosfs);
  50 WINE_DECLARE_DEBUG_CHANNEL(file);
  51
  52 static DOS_FULL_NAME DIR_Windows;
  53 static DOS_FULL_NAME DIR_System;
  54
  55
  56 /***********************************************************************
  57  *           DIR_GetPath
  58  *
  59  * Get a path name from the wine.ini file and make sure it is valid.
  60  */
  61 static int DIR_GetPath( const char *keyname, const char *defval,
  62                         DOS_FULL_NAME *full_name, char * longname, BOOL warn )
  63 {
  64     char path[MAX_PATHNAME_LEN];
  65     BY_HANDLE_FILE_INFORMATION info;
  66     const char *mess = "does not exist";
  67
  68     PROFILE_GetWineIniString( "wine", keyname, defval, path, sizeof(path) );
  69     if (!DOSFS_GetFullName( path, TRUE, full_name ) ||
  70         (!FILE_Stat( full_name->long_name, &info ) && (mess=strerror(errno)))||
  71         (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && (mess="not a directory")) ||
  72         (!(GetLongPathNameA(full_name->short_name, longname, MAX_PATHNAME_LEN))) )
  73     {
  74         if (warn)
  75            MESSAGE("Invalid path '%s' for %s directory: %s\n", path, keyname, mess);
  76         return 0;
  77     }
  78     return 1;
  79 }
  80
  81
  82 /***********************************************************************
  83  *           DIR_Init
  84  */
  85 int DIR_Init(void)
  86 {
  87     char path[MAX_PATHNAME_LEN];
  88     char longpath[MAX_PATHNAME_LEN];
  89     DOS_FULL_NAME tmp_dir, profile_dir;
  90     int drive;
  91     const char *cwd;
  92
  93     if (!getcwd( path, MAX_PATHNAME_LEN ))
  94     {
  95         perror( "Could not get current directory" );
  96         return 0;
  97     }
  98     cwd = path;
  99     if ((drive = DRIVE_FindDriveRoot( &cwd )) == -1)
 100     {
 101         MESSAGE("Warning: could not find wine config [Drive x] entry "
 102             "for current working directory %s; "
 103             "starting in windows directory.\n", cwd );
 104     }
 105     else
 106     {
 107         DRIVE_SetCurrentDrive( drive );
 108         DRIVE_Chdir( drive, cwd );
 109     }
 110
 111     if (!(DIR_GetPath( "windows", "c:\\windows", &DIR_Windows, longpath, TRUE )) ||
 112         !(DIR_GetPath( "system", "c:\\windows\\system", &DIR_System, longpath, TRUE )) ||
 113         !(DIR_GetPath( "temp", "c:\\windows", &tmp_dir, longpath, TRUE )))
 114     {
 115         PROFILE_UsageWineIni();
 116         return 0;
 117     }
 118     if (-1 == access( tmp_dir.long_name, W_OK ))
 119     {
 120         if (errno==EACCES)
 121         {
 122                 MESSAGE("Warning: the temporary directory '%s' (specified in wine configuration file) is not writeable.\n", tmp_dir.long_name);
 123                 PROFILE_UsageWineIni();
 124         }
 125         else
 126                 MESSAGE("Warning: access to temporary directory '%s' failed (%s).\n",
 127                     tmp_dir.long_name, strerror(errno));
 128     }
 129
 130     if (drive == -1)
 131     {
 132         drive = DIR_Windows.drive;
 133         DRIVE_SetCurrentDrive( drive );
 134         DRIVE_Chdir( drive, DIR_Windows.short_name + 2 );
 135     }
 136
 137     PROFILE_GetWineIniString("wine", "path", "c:\\windows;c:\\windows\\system",
 138                              path, sizeof(path) );
 139     if (strchr(path, '/'))
 140     {
 141         MESSAGE("Fix your wine config to use DOS drive syntax in [wine] 'Path=' statement! (no '/' allowed)\n");
 142         PROFILE_UsageWineIni();
 143         ExitProcess(1);
 144     }
 145
 146     /* Set the environment variables */
 147
 148     SetEnvironmentVariableA( "PATH", path );
 149     SetEnvironmentVariableA( "TEMP", tmp_dir.short_name );
 150     SetEnvironmentVariableA( "TMP", tmp_dir.short_name );
 151     SetEnvironmentVariableA( "windir", DIR_Windows.short_name );
 152     SetEnvironmentVariableA( "winsysdir", DIR_System.short_name );
 153
 154     /* set COMSPEC only if it doesn't exist already */
 155     if (!GetEnvironmentVariableA( "COMSPEC", NULL, 0 ))
 156         SetEnvironmentVariableA( "COMSPEC", "c:\\command.com" );
 157
 158     TRACE("WindowsDir = %s (%s)\n",
 159           DIR_Windows.short_name, DIR_Windows.long_name );
 160     TRACE("SystemDir  = %s (%s)\n",
 161           DIR_System.short_name, DIR_System.long_name );
 162     TRACE("TempDir    = %s (%s)\n",
 163           tmp_dir.short_name, tmp_dir.long_name );
 164     TRACE("Path       = %s\n", path );
 165     TRACE("Cwd        = %c:\\%s\n",
 166           'A' + drive, DRIVE_GetDosCwd( drive ) );
 167
 168     if (DIR_GetPath( "profile", "", &profile_dir, longpath, FALSE ))
 169     {
 170         TRACE("USERPROFILE= %s\n", longpath );
 171         SetEnvironmentVariableA( "USERPROFILE", longpath );
 172     }
 173
 174     TRACE("SYSTEMROOT = %s\n", DIR_Windows.short_name );
 175     SetEnvironmentVariableA( "SYSTEMROOT", DIR_Windows.short_name );
 176
 177     return 1;
 178 }
 179
 180
 181 /***********************************************************************
 182  *           GetTempPathA   (KERNEL32.@)
 183  */
 184 UINT WINAPI GetTempPathA( UINT count, LPSTR path )
 185 {
 186     UINT ret;
 187     if (!(ret = GetEnvironmentVariableA( "TMP", path, count )))
 188         if (!(ret = GetEnvironmentVariableA( "TEMP", path, count )))
 189             if (!(ret = GetCurrentDirectoryA( count, path )))
 190                 return 0;
 191     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 192     {
 193         path[ret++] = '\\';
 194         path[ret]   = '\0';
 195     }
 196     return ret;
 197 }
 198
 199
 200 /***********************************************************************
 201  *           GetTempPathW   (KERNEL32.@)
 202  */
 203 UINT WINAPI GetTempPathW( UINT count, LPWSTR path )
 204 {
 205     static const WCHAR tmp[]  = { 'T', 'M', 'P', 0 };
 206     static const WCHAR temp[] = { 'T', 'E', 'M', 'P', 0 };
 207     UINT ret;
 208     if (!(ret = GetEnvironmentVariableW( tmp, path, count )))
 209         if (!(ret = GetEnvironmentVariableW( temp, path, count )))
 210             if (!(ret = GetCurrentDirectoryW( count, path )))
 211                 return 0;
 212     if (count && (ret < count - 1) && (path[ret-1] != '\\'))
 213     {
 214         path[ret++] = '\\';
 215         path[ret]   = '\0';
 216     }
 217     return ret;
 218 }
 219
 220
 221 /***********************************************************************
 222  *           DIR_GetWindowsUnixDir
 223  */
 224 UINT DIR_GetWindowsUnixDir( LPSTR path, UINT count )
 225 {
 226     if (path) lstrcpynA( path, DIR_Windows.long_name, count );
 227     return strlen( DIR_Windows.long_name );
 228 }
 229
 230
 231 /***********************************************************************
 232  *           DIR_GetSystemUnixDir
 233  */
 234 UINT DIR_GetSystemUnixDir( LPSTR path, UINT count )
 235 {
 236     if (path) lstrcpynA( path, DIR_System.long_name, count );
 237     return strlen( DIR_System.long_name );
 238 }
 239
 240
 241 /***********************************************************************
 242  *           GetTempDrive   (KERNEL.92)
 243  * A closer look at krnl386.exe shows what the SDK doesn't mention:
 244  *
 245  * returns:
 246  *   AL: driveletter
 247  *   AH: ':'            - yes, some kernel code even does stosw with
 248  *                            the returned AX.
 249  *   DX: 1 for success
 250  */
 251 UINT WINAPI GetTempDrive( BYTE ignored )
 252 {
 253     char *buffer;
 254     BYTE ret;
 255     UINT len = GetTempPathA( 0, NULL );
 256
 257     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len + 1 )) )
 258         ret = DRIVE_GetCurrentDrive() + 'A';
 259     else
 260     {
 261         /* FIXME: apparently Windows does something with the ignored byte */
 262         if (!GetTempPathA( len, buffer )) buffer[0] = 'C';
 263         ret = toupper(buffer[0]);
 264         HeapFree( GetProcessHeap(), 0, buffer );
 265     }
 266     return MAKELONG( ret | (':' << 8), 1 );
 267 }
 268
 269
 270 /***********************************************************************
 271  *           GetWindowsDirectory   (KERNEL.134)
 272  */
 273 UINT16 WINAPI GetWindowsDirectory16( LPSTR path, UINT16 count )
 274 {
 275     return (UINT16)GetWindowsDirectoryA( path, count );
 276 }
 277
 278
 279 /***********************************************************************
 280  *           GetWindowsDirectoryA   (KERNEL32.@)
 281  *
 282  * See comment for GetWindowsDirectoryW.
 283  */
 284 UINT WINAPI GetWindowsDirectoryA( LPSTR path, UINT count )
 285 {
 286     UINT len = strlen( DIR_Windows.short_name ) + 1;
 287     if (path && count >= len)
 288     {
 289         strcpy( path, DIR_Windows.short_name );
 290         len--;
 291     }
 292     return len;
 293 }
 294
 295
 296 /***********************************************************************
 297  *           GetWindowsDirectoryW   (KERNEL32.@)
 298  *
 299  * Return value:
 300  * If buffer is large enough to hold full path and terminating '\0' character
 301  * function copies path to buffer and returns length of the path without '\0'.
 302  * Otherwise function returns required size including '\0' character and
 303  * does not touch the buffer.
 304  */
 305 UINT WINAPI GetWindowsDirectoryW( LPWSTR path, UINT count )
 306 {
 307     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, NULL, 0 );
 308     if (path && count >= len)
 309     {
 310         MultiByteToWideChar( CP_ACP, 0, DIR_Windows.short_name, -1, path, count );
 311         len--;
 312     }
 313     return len;
 314 }
 315
 316
 317 /***********************************************************************
 318  *           GetSystemWindowsDirectoryA   (KERNEL32.@) W2K, TS4.0SP4
 319  */
 320 UINT WINAPI GetSystemWindowsDirectoryA( LPSTR path, UINT count )
 321 {
 322     return GetWindowsDirectoryA( path, count );
 323 }
 324
 325
 326 /***********************************************************************
 327  *           GetSystemWindowsDirectoryW   (KERNEL32.@) W2K, TS4.0SP4
 328  */
 329 UINT WINAPI GetSystemWindowsDirectoryW( LPWSTR path, UINT count )
 330 {
 331     return GetWindowsDirectoryW( path, count );
 332 }
 333
 334
 335 /***********************************************************************
 336  *           GetSystemDirectory   (KERNEL.135)
 337  */
 338 UINT16 WINAPI GetSystemDirectory16( LPSTR path, UINT16 count )
 339 {
 340     return (UINT16)GetSystemDirectoryA( path, count );
 341 }
 342
 343
 344 /***********************************************************************
 345  *           GetSystemDirectoryA   (KERNEL32.@)
 346  *
 347  * See comment for GetWindowsDirectoryW.
 348  */
 349 UINT WINAPI GetSystemDirectoryA( LPSTR path, UINT count )
 350 {
 351     UINT len = strlen( DIR_System.short_name ) + 1;
 352     if (path && count >= len)
 353     {
 354         strcpy( path, DIR_System.short_name );
 355         len--;
 356     }
 357     return len;
 358 }
 359
 360
 361 /***********************************************************************
 362  *           GetSystemDirectoryW   (KERNEL32.@)
 363  *
 364  * See comment for GetWindowsDirectoryW.
 365  */
 366 UINT WINAPI GetSystemDirectoryW( LPWSTR path, UINT count )
 367 {
 368     UINT len = MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, NULL, 0 );
 369     if (path && count >= len)
 370     {
 371         MultiByteToWideChar( CP_ACP, 0, DIR_System.short_name, -1, path, count );
 372         len--;
 373     }
 374     return len;
 375 }
 376
 377
 378 /***********************************************************************
 379  *           CreateDirectory   (KERNEL.144)
 380  */
 381 BOOL16 WINAPI CreateDirectory16( LPCSTR path, LPVOID dummy )
 382 {
 383     TRACE_(file)("(%s,%p)\n", path, dummy );
 384     return (BOOL16)CreateDirectoryA( path, NULL );
 385 }
 386
 387
 388 /***********************************************************************
 389  *           CreateDirectoryA   (KERNEL32.@)
 390  * RETURNS:
 391  *      TRUE : success
 392  *      FALSE : failure
 393  *              ERROR_DISK_FULL:        on full disk
 394  *              ERROR_ALREADY_EXISTS:   if directory name exists (even as file)
 395  *              ERROR_ACCESS_DENIED:    on permission problems
 396  *              ERROR_FILENAME_EXCED_RANGE: too long filename(s)
 397  */
 398 BOOL WINAPI CreateDirectoryA( LPCSTR path,
 399                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 400 {
 401     DOS_FULL_NAME full_name;
 402
 403     TRACE_(file)("(%s,%p)\n", path, lpsecattribs );
 404     if (DOSFS_GetDevice( path ))
 405     {
 406         TRACE_(file)("cannot use device '%s'!\n",path);
 407         SetLastError( ERROR_ACCESS_DENIED );
 408         return FALSE;
 409     }
 410     if (!DOSFS_GetFullName( path, FALSE, &full_name )) return 0;
 411     if (mkdir( full_name.long_name, 0777 ) == -1) {
 412         WARN_(file)("Error '%s' trying to create directory '%s'\n", strerror(errno), full_name.long_name);
 413         /* the FILE_SetDosError() generated error codes don't match the
 414          * CreateDirectory ones for some errnos */
 415         switch (errno) {
 416         case EEXIST: SetLastError(ERROR_ALREADY_EXISTS); break;
 417         case ENOSPC: SetLastError(ERROR_DISK_FULL); break;
 418         default: FILE_SetDosError();break;
 419         }
 420         return FALSE;
 421     }
 422     return TRUE;
 423 }
 424
 425
 426 /***********************************************************************
 427  *           CreateDirectoryW   (KERNEL32.@)
 428  */
 429 BOOL WINAPI CreateDirectoryW( LPCWSTR path,
 430                                   LPSECURITY_ATTRIBUTES lpsecattribs )
 431 {
 432     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 433     BOOL ret = CreateDirectoryA( xpath, lpsecattribs );
 434     HeapFree( GetProcessHeap(), 0, xpath );
 435     return ret;
 436 }
 437
 438
 439 /***********************************************************************
 440  *           CreateDirectoryExA   (KERNEL32.@)
 441  */
 442 BOOL WINAPI CreateDirectoryExA( LPCSTR template, LPCSTR path,
 443                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 444 {
 445     return CreateDirectoryA(path,lpsecattribs);
 446 }
 447
 448
 449 /***********************************************************************
 450  *           CreateDirectoryExW   (KERNEL32.@)
 451  */
 452 BOOL WINAPI CreateDirectoryExW( LPCWSTR template, LPCWSTR path,
 453                                     LPSECURITY_ATTRIBUTES lpsecattribs)
 454 {
 455     return CreateDirectoryW(path,lpsecattribs);
 456 }
 457
 458
 459 /***********************************************************************
 460  *           RemoveDirectory   (KERNEL.145)
 461  */
 462 BOOL16 WINAPI RemoveDirectory16( LPCSTR path )
 463 {
 464     return (BOOL16)RemoveDirectoryA( path );
 465 }
 466
 467
 468 /***********************************************************************
 469  *           RemoveDirectoryA   (KERNEL32.@)
 470  */
 471 BOOL WINAPI RemoveDirectoryA( LPCSTR path )
 472 {
 473     DOS_FULL_NAME full_name;
 474
 475     TRACE_(file)("'%s'\n", path );
 476
 477     if (DOSFS_GetDevice( path ))
 478     {
 479         TRACE_(file)("cannot remove device '%s'!\n", path);
 480         SetLastError( ERROR_FILE_NOT_FOUND );
 481         return FALSE;
 482     }
 483     if (!DOSFS_GetFullName( path, TRUE, &full_name )) return FALSE;
 484     if (rmdir( full_name.long_name ) == -1)
 485     {
 486         FILE_SetDosError();
 487         return FALSE;
 488     }
 489     return TRUE;
 490 }
 491
 492
 493 /***********************************************************************
 494  *           RemoveDirectoryW   (KERNEL32.@)
 495  */
 496 BOOL WINAPI RemoveDirectoryW( LPCWSTR path )
 497 {
 498     LPSTR xpath = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 499     BOOL ret = RemoveDirectoryA( xpath );
 500     HeapFree( GetProcessHeap(), 0, xpath );
 501     return ret;
 502 }
 503
 504
 505 /***********************************************************************
 506  *           DIR_TryPath
 507  *
 508  * Helper function for DIR_SearchPath.
 509  */
 510 static BOOL DIR_TryPath( const DOS_FULL_NAME *dir, LPCSTR name,
 511                            DOS_FULL_NAME *full_name )
 512 {
 513     LPSTR p_l = full_name->long_name + strlen(dir->long_name) + 1;
 514     LPSTR p_s = full_name->short_name + strlen(dir->short_name) + 1;
 515
 516     if ((p_s >= full_name->short_name + sizeof(full_name->short_name) - 14) ||
 517         (p_l >= full_name->long_name + sizeof(full_name->long_name) - 1))
 518     {
 519         SetLastError( ERROR_PATH_NOT_FOUND );
 520         return FALSE;
 521     }
 522     if (!DOSFS_FindUnixName( dir->long_name, name, p_l,
 523                    sizeof(full_name->long_name) - (p_l - full_name->long_name),
 524                    p_s, !(DRIVE_GetFlags(dir->drive) & DRIVE_CASE_SENSITIVE) ))
 525         return FALSE;
 526     strcpy( full_name->long_name, dir->long_name );
 527     p_l[-1] = '/';
 528     strcpy( full_name->short_name, dir->short_name );
 529     p_s[-1] = '\\';
 530     return TRUE;
 531 }
 532
 533 static BOOL DIR_SearchSemicolonedPaths(LPCSTR name, DOS_FULL_NAME *full_name, LPSTR pathlist)
 534 {
 535     LPSTR next, buffer = NULL;
 536     INT len = strlen(name), newlen, currlen = 0;
 537     BOOL ret = FALSE;
 538
 539     next = pathlist;
 540     while (!ret && next)
 541     {
 542         LPSTR cur = next;
 543         while (*cur == ';') cur++;
 544         if (!*cur) break;
 545         next = strchr( cur, ';' );
 546         if (next) *next++ = '\0';
 547         newlen = strlen(cur) + len + 2;
 548         if (newlen > currlen)
 549         {
 550             if (!(buffer = HeapReAlloc( GetProcessHeap(), 0, buffer, newlen)))
 551                 goto done;
 552             currlen = newlen;
 553         }
 554         strcpy( buffer, cur );
 555         strcat( buffer, "\\" );
 556         strcat( buffer, name );
 557         ret = DOSFS_GetFullName( buffer, TRUE, full_name );
 558     }
 559 done:
 560     HeapFree( GetProcessHeap(), 0, buffer );
 561     return ret;
 562 }
 563
 564
 565 /***********************************************************************
 566  *           DIR_TryEnvironmentPath
 567  *
 568  * Helper function for DIR_SearchPath.
 569  * Search in the specified path, or in $PATH if NULL.
 570  */
 571 static BOOL DIR_TryEnvironmentPath( LPCSTR name, DOS_FULL_NAME *full_name, LPCSTR envpath )
 572 {
 573     LPSTR path;
 574     BOOL ret = FALSE;
 575     DWORD size;
 576
 577     size = envpath ? strlen(envpath)+1 : GetEnvironmentVariableA( "PATH", NULL, 0 );
 578     if (!size) return FALSE;
 579     if (!(path = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
 580     if (envpath) strcpy( path, envpath );
 581     else if (!GetEnvironmentVariableA( "PATH", path, size )) goto done;
 582
 583     ret = DIR_SearchSemicolonedPaths(name, full_name, path);
 584
 585 done:
 586     HeapFree( GetProcessHeap(), 0, path );
 587     return ret;
 588 }
 589
 590
 591 /***********************************************************************
 592  *           DIR_TryModulePath
 593  *
 594  * Helper function for DIR_SearchPath.
 595  */
 596 static BOOL DIR_TryModulePath( LPCSTR name, DOS_FULL_NAME *full_name, BOOL win32 )
 597 {
 598     /* FIXME: for now, GetModuleFileNameA can't return more */
 599     /* than OFS_MAXPATHNAME. This may change with Win32. */
 600
 601     char buffer[OFS_MAXPATHNAME];
 602     LPSTR p;
 603
 604     if (!win32)
 605     {
 606         if (!GetCurrentTask()) return FALSE;
 607         if (!GetModuleFileName16( GetCurrentTask(), buffer, sizeof(buffer) ))
 608                 buffer[0]='\0';
 609     } else {
 610         if (!GetModuleFileNameA( 0, buffer, sizeof(buffer) ))
 611                 buffer[0]='\0';
 612     }
 613     if (!(p = strrchr( buffer, '\\' ))) return FALSE;
 614     if (sizeof(buffer) - (++p - buffer) <= strlen(name)) return FALSE;
 615     strcpy( p, name );
 616     return DOSFS_GetFullName( buffer, TRUE, full_name );
 617 }
 618
 619
 620 /***********************************************************************
 621  *           DIR_TryAppPath
 622  *
 623  * Helper function for DIR_SearchPath.
 624  */
 625 static BOOL DIR_TryAppPath( LPCSTR name, DOS_FULL_NAME *full_name )
 626 {
 627     HKEY hkAppPaths, hkApp;
 628     char lpAppName[MAX_PATHNAME_LEN], lpAppPaths[MAX_PATHNAME_LEN];
 629     LPSTR lpFileName;
 630     BOOL res = FALSE;
 631     DWORD type, count;
 632
 633     if (RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\Windows\\CurrentVersion\\App Paths", &hkAppPaths) != ERROR_SUCCESS)
 634         return FALSE;
 635
 636     if (GetModuleFileNameA(0, lpAppName, sizeof(lpAppName)) == 0)
 637     {
 638         WARN("huh, module not found ??\n");
 639         goto end;
 640     }
 641     lpFileName = strrchr(lpAppName, '\\');
 642     if (!lpFileName)
 643         goto end;
 644     else lpFileName++; /* skip '\\' */
 645     if (RegOpenKeyA(hkAppPaths, lpFileName, &hkApp) != ERROR_SUCCESS)
 646         goto end;
 647     count = sizeof(lpAppPaths);
 648     if (RegQueryValueExA(hkApp, "Path", 0, &type, (LPBYTE)lpAppPaths, &count) != ERROR_SUCCESS)
 649         goto end;
 650     TRACE("successfully opened App Paths for '%s'\n", lpFileName);
 651
 652     res = DIR_SearchSemicolonedPaths(name, full_name, lpAppPaths);
 653 end:
 654     if (hkApp)
 655         RegCloseKey(hkApp);
 656     if (hkAppPaths)
 657         RegCloseKey(hkAppPaths);
 658     return res;
 659 }
 660
 661 /***********************************************************************
 662  *           DIR_SearchPath
 663  *
 664  * Implementation of SearchPathA. 'win32' specifies whether the search
 665  * order is Win16 (module path last) or Win32 (module path first).
 666  *
 667  * FIXME: should return long path names.
 668  */
 669 DWORD DIR_SearchPath( LPCSTR path, LPCSTR name, LPCSTR ext,
 670                       DOS_FULL_NAME *full_name, BOOL win32 )
 671 {
 672     LPCSTR p;
 673     LPSTR tmp = NULL;
 674     BOOL ret = TRUE;
 675
 676     /* First check the supplied parameters */
 677
 678     p = strrchr( name, '.' );
 679     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 680         ext = NULL;  /* Ignore the specified extension */
 681     if (FILE_contains_path (name))
 682         path = NULL;  /* Ignore path if name already contains a path */
 683     if (path && !*path) path = NULL;  /* Ignore empty path */
 684
 685     /* Allocate a buffer for the file name and extension */
 686
 687     if (ext)
 688     {
 689         DWORD len = strlen(name) + strlen(ext);
 690         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 691         {
 692             SetLastError( ERROR_OUTOFMEMORY );
 693             return 0;
 694         }
 695         strcpy( tmp, name );
 696         strcat( tmp, ext );
 697         name = tmp;
 698     }
 699
 700     /* If the name contains an explicit path, everything's easy */
 701
 702     if (FILE_contains_path(name))
 703     {
 704         ret = DOSFS_GetFullName( name, TRUE, full_name );
 705         goto done;
 706     }
 707
 708     /* Search in the specified path */
 709
 710     if (path)
 711     {
 712         ret = DIR_TryEnvironmentPath( name, full_name, path );
 713         goto done;
 714     }
 715
 716     /* Try the path of the current executable (for Win32 search order) */
 717
 718     if (win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 719
 720     /* Try the current directory */
 721
 722     if (DOSFS_GetFullName( name, TRUE, full_name )) goto done;
 723
 724     /* Try the Windows system directory */
 725
 726     if (DIR_TryPath( &DIR_System, name, full_name ))
 727         goto done;
 728
 729     /* Try the Windows directory */
 730
 731     if (DIR_TryPath( &DIR_Windows, name, full_name ))
 732         goto done;
 733
 734     /* Try the path of the current executable (for Win16 search order) */
 735
 736     if (!win32 && DIR_TryModulePath( name, full_name, win32 )) goto done;
 737
 738     /* Try the "App Paths" entry if existing (undocumented ??) */
 739     if (DIR_TryAppPath(name, full_name))
 740         goto done;
 741
 742     /* Try all directories in path */
 743
 744     ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 745
 746 done:
 747     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 748     return ret;
 749 }
 750
 751
 752 /***********************************************************************
 753  * SearchPathA [KERNEL32.@]
 754  *
 755  * Searches for a specified file in the search path.
 756  *
 757  * PARAMS
 758  *    path      [I] Path to search
 759  *    name      [I] Filename to search for.
 760  *    ext       [I] File extension to append to file name. The first
 761  *                  character must be a period. This parameter is
 762  *                  specified only if the filename given does not
 763  *                  contain an extension.
 764  *    buflen    [I] size of buffer, in characters
 765  *    buffer    [O] buffer for found filename
 766  *    lastpart  [O] address of pointer to last used character in
 767  *                  buffer (the final '\')
 768  *
 769  * RETURNS
 770  *    Success: length of string copied into buffer, not including
 771  *             terminating null character. If the filename found is
 772  *             longer than the length of the buffer, the length of the
 773  *             filename is returned.
 774  *    Failure: Zero
 775  *
 776  * NOTES
 777  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 778  *    (tested on NT 4.0)
 779  */
 780 DWORD WINAPI SearchPathA( LPCSTR path, LPCSTR name, LPCSTR ext, DWORD buflen,
 781                             LPSTR buffer, LPSTR *lastpart )
 782 {
 783     LPSTR p, res;
 784     DOS_FULL_NAME full_name;
 785
 786     if (!DIR_SearchPath( path, name, ext, &full_name, TRUE ))
 787     {
 788         SetLastError(ERROR_FILE_NOT_FOUND);
 789         return 0;
 790     }
 791     lstrcpynA( buffer, full_name.short_name, buflen );
 792     res = full_name.long_name +
 793               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 794     while (*res == '/') res++;
 795     if (buflen)
 796     {
 797         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 798         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 799         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 800     }
 801     TRACE("Returning %d\n", strlen(res) + 3 );
 802     return strlen(res) + 3;
 803 }
 804
 805
 806 /***********************************************************************
 807  *           SearchPathW   (KERNEL32.@)
 808  */
 809 DWORD WINAPI SearchPathW( LPCWSTR path, LPCWSTR name, LPCWSTR ext,
 810                             DWORD buflen, LPWSTR buffer, LPWSTR *lastpart )
 811 {
 812     LPWSTR p;
 813     LPSTR res;
 814     DOS_FULL_NAME full_name;
 815
 816     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
 817     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
 818     LPSTR extA  = HEAP_strdupWtoA( GetProcessHeap(), 0, ext );
 819     DWORD ret = DIR_SearchPath( pathA, nameA, extA, &full_name, TRUE );
 820     HeapFree( GetProcessHeap(), 0, extA );
 821     HeapFree( GetProcessHeap(), 0, nameA );
 822     HeapFree( GetProcessHeap(), 0, pathA );
 823     if (!ret) return 0;
 824
 825     if (buflen > 0 && !MultiByteToWideChar( CP_ACP, 0, full_name.short_name, -1, buffer, buflen ))
 826         buffer[buflen-1] = 0;
 827     res = full_name.long_name +
 828               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 829     while (*res == '/') res++;
 830     if (buflen)
 831     {
 832         if (buflen > 3)
 833         {
 834             if (!MultiByteToWideChar( CP_ACP, 0, res, -1, buffer+3, buflen-3 ))
 835                 buffer[buflen-1] = 0;
 836         }
 837         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 838         if (lastpart)
 839         {
 840             for (p = *lastpart = buffer; *p; p++)
 841                 if (*p == '\\') *lastpart = p + 1;
 842         }
 843     }
 844     return strlen(res) + 3;
 845 }
 846
 847
 848 /***********************************************************************
 849  *           search_alternate_path
 850  *
 851  *
 852  * FIXME: should return long path names.?
 853  */
 854 static BOOL search_alternate_path(LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 855                                   DOS_FULL_NAME *full_name)
 856 {
 857     LPCSTR p;
 858     LPSTR tmp = NULL;
 859     BOOL ret = TRUE;
 860
 861     /* First check the supplied parameters */
 862
 863     p = strrchr( name, '.' );
 864     if (p && !strchr( p, '/' ) && !strchr( p, '\\' ))
 865         ext = NULL;  /* Ignore the specified extension */
 866
 867     /* Allocate a buffer for the file name and extension */
 868
 869     if (ext)
 870     {
 871         DWORD len = strlen(name) + strlen(ext);
 872         if (!(tmp = HeapAlloc( GetProcessHeap(), 0, len + 1 )))
 873         {
 874             SetLastError( ERROR_OUTOFMEMORY );
 875             return 0;
 876         }
 877         strcpy( tmp, name );
 878         strcat( tmp, ext );
 879         name = tmp;
 880     }
 881
 882     if (DIR_TryEnvironmentPath (name, full_name, dll_path))
 883         ;
 884     else if (DOSFS_GetFullName (name, TRUE, full_name)) /* current dir */
 885         ;
 886     else if (DIR_TryPath (&DIR_System, name, full_name)) /* System dir */
 887         ;
 888     else if (DIR_TryPath (&DIR_Windows, name, full_name)) /* Windows dir */
 889         ;
 890     else
 891         ret = DIR_TryEnvironmentPath( name, full_name, NULL );
 892
 893     if (tmp) HeapFree( GetProcessHeap(), 0, tmp );
 894     return ret;
 895 }
 896
 897
 898 /***********************************************************************
 899  * DIR_SearchAlternatePath
 900  *
 901  * Searches for a specified file in the search path.
 902  *
 903  * PARAMS
 904  *    dll_path  [I] Path to search
 905  *    name      [I] Filename to search for.
 906  *    ext       [I] File extension to append to file name. The first
 907  *                  character must be a period. This parameter is
 908  *                  specified only if the filename given does not
 909  *                  contain an extension.
 910  *    buflen    [I] size of buffer, in characters
 911  *    buffer    [O] buffer for found filename
 912  *    lastpart  [O] address of pointer to last used character in
 913  *                  buffer (the final '\') (May be NULL)
 914  *
 915  * RETURNS
 916  *    Success: length of string copied into buffer, not including
 917  *             terminating null character. If the filename found is
 918  *             longer than the length of the buffer, the length of the
 919  *             filename is returned.
 920  *    Failure: Zero
 921  *
 922  * NOTES
 923  *    If the file is not found, calls SetLastError(ERROR_FILE_NOT_FOUND)
 924  */
 925 DWORD DIR_SearchAlternatePath( LPCSTR dll_path, LPCSTR name, LPCSTR ext,
 926                                DWORD buflen, LPSTR buffer, LPSTR *lastpart )
 927 {
 928     LPSTR p, res;
 929     DOS_FULL_NAME full_name;
 930
 931     if (!search_alternate_path( dll_path, name, ext, &full_name))
 932     {
 933         SetLastError(ERROR_FILE_NOT_FOUND);
 934         return 0;
 935     }
 936     lstrcpynA( buffer, full_name.short_name, buflen );
 937     res = full_name.long_name +
 938               strlen(DRIVE_GetRoot( full_name.short_name[0] - 'A' ));
 939     while (*res == '/') res++;
 940     if (buflen)
 941     {
 942         if (buflen > 3) lstrcpynA( buffer + 3, res, buflen - 3 );
 943         for (p = buffer; *p; p++) if (*p == '/') *p = '\\';
 944         if (lastpart) *lastpart = strrchr( buffer, '\\' ) + 1;
 945     }
 946     TRACE("Returning %d\n", strlen(res) + 3 );
 947     return strlen(res) + 3;
 948 }