dlls/msi/media.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2008 James Hawkins
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winerror.h"
  25 #include "wine/debug.h"
  26 #include "fdi.h"
  27 #include "msipriv.h"
  28 #include "winuser.h"
  29 #include "winreg.h"
  30 #include "shlwapi.h"
  31 #include "wine/unicode.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(msi);
  34
  35 /* from msvcrt/fcntl.h */
  36 #define _O_RDONLY      0
  37 #define _O_WRONLY      1
  38 #define _O_RDWR        2
  39 #define _O_ACCMODE     (_O_RDONLY|_O_WRONLY|_O_RDWR)
  40 #define _O_APPEND      0x0008
  41 #define _O_RANDOM      0x0010
  42 #define _O_SEQUENTIAL  0x0020
  43 #define _O_TEMPORARY   0x0040
  44 #define _O_NOINHERIT   0x0080
  45 #define _O_CREAT       0x0100
  46 #define _O_TRUNC       0x0200
  47 #define _O_EXCL        0x0400
  48 #define _O_SHORT_LIVED 0x1000
  49 #define _O_TEXT        0x4000
  50 #define _O_BINARY      0x8000
  51
  52 static BOOL source_matches_volume(MSIMEDIAINFO *mi, LPCWSTR source_root)
  53 {
  54     WCHAR volume_name[MAX_PATH + 1];
  55     WCHAR root[MAX_PATH + 1];
  56
  57     strcpyW(root, source_root);
  58     PathStripToRootW(root);
  59     PathAddBackslashW(root);
  60
  61     if (!GetVolumeInformationW(root, volume_name, MAX_PATH + 1,
  62                                NULL, NULL, NULL, NULL, 0))
  63     {
  64         ERR("Failed to get volume information\n");
  65         return FALSE;
  66     }
  67
  68     return !lstrcmpW(mi->volume_label, volume_name);
  69 }
  70
  71 static UINT msi_change_media(MSIPACKAGE *package, MSIMEDIAINFO *mi)
  72 {
  73     LPWSTR error, error_dialog;
  74     LPWSTR source_dir;
  75     UINT r = ERROR_SUCCESS;
  76
  77     static const WCHAR error_prop[] = {'E','r','r','o','r','D','i','a','l','o','g',0};
  78
  79     if ((msi_get_property_int(package, szUILevel, 0) & INSTALLUILEVEL_MASK) ==
  80          INSTALLUILEVEL_NONE && !gUIHandlerA && !gUIHandlerW && !gUIHandlerRecord)
  81         return ERROR_SUCCESS;
  82
  83     error = generate_error_string(package, 1302, 1, mi->disk_prompt);
  84     error_dialog = msi_dup_property(package, error_prop);
  85     source_dir = msi_dup_property(package, cszSourceDir);
  86
  87     while (r == ERROR_SUCCESS && !source_matches_volume(mi, source_dir))
  88     {
  89         r = msi_spawn_error_dialog(package, error_dialog, error);
  90
  91         if (gUIHandlerW)
  92         {
  93             gUIHandlerW(gUIContext, MB_RETRYCANCEL | INSTALLMESSAGE_ERROR, error);
  94         }
  95         else if (gUIHandlerA)
  96         {
  97             char *msg = strdupWtoA(error);
  98             gUIHandlerA(gUIContext, MB_RETRYCANCEL | INSTALLMESSAGE_ERROR, msg);
  99             msi_free(msg);
 100         }
 101         else if (gUIHandlerRecord)
 102         {
 103             MSIHANDLE rec = MsiCreateRecord(1);
 104             MsiRecordSetStringW(rec, 0, error);
 105             gUIHandlerRecord(gUIContext, MB_RETRYCANCEL | INSTALLMESSAGE_ERROR, rec);
 106             MsiCloseHandle(rec);
 107         }
 108     }
 109
 110     msi_free(error);
 111     msi_free(error_dialog);
 112     msi_free(source_dir);
 113
 114     return r;
 115 }
 116
 117 static UINT writeout_cabinet_stream(MSIPACKAGE *package, LPCWSTR stream,
 118                                     WCHAR* source)
 119 {
 120     UINT rc;
 121     USHORT* data;
 122     UINT size;
 123     DWORD write;
 124     HANDLE hfile;
 125     WCHAR tmp[MAX_PATH];
 126
 127     static const WCHAR cszTempFolder[]= {
 128         'T','e','m','p','F','o','l','d','e','r',0};
 129
 130     rc = read_raw_stream_data(package->db, stream, &data, &size);
 131     if (rc != ERROR_SUCCESS)
 132         return rc;
 133
 134     write = MAX_PATH;
 135     if (MSI_GetPropertyW(package, cszTempFolder, tmp, &write))
 136         GetTempPathW(MAX_PATH, tmp);
 137
 138     GetTempFileNameW(tmp, stream, 0, source);
 139
 140     track_tempfile(package, source);
 141     hfile = CreateFileW(source, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
 142                         FILE_ATTRIBUTE_NORMAL, NULL);
 143
 144     if (hfile == INVALID_HANDLE_VALUE)
 145     {
 146         ERR("Unable to create file %s\n", debugstr_w(source));
 147         rc = ERROR_FUNCTION_FAILED;
 148         goto end;
 149     }
 150
 151     WriteFile(hfile, data, size, &write, NULL);
 152     CloseHandle(hfile);
 153     TRACE("wrote %i bytes to %s\n", write, debugstr_w(source));
 154
 155 end:
 156     msi_free(data);
 157     return rc;
 158 }
 159
 160 static void * CDECL cabinet_alloc(ULONG cb)
 161 {
 162     return msi_alloc(cb);
 163 }
 164
 165 static void CDECL cabinet_free(void *pv)
 166 {
 167     msi_free(pv);
 168 }
 169
 170 static INT_PTR CDECL cabinet_open(char *pszFile, int oflag, int pmode)
 171 {
 172     HANDLE handle;
 173     DWORD dwAccess = 0;
 174     DWORD dwShareMode = 0;
 175     DWORD dwCreateDisposition = OPEN_EXISTING;
 176
 177     switch (oflag & _O_ACCMODE)
 178     {
 179     case _O_RDONLY:
 180         dwAccess = GENERIC_READ;
 181         dwShareMode = FILE_SHARE_READ | FILE_SHARE_DELETE;
 182         break;
 183     case _O_WRONLY:
 184         dwAccess = GENERIC_WRITE;
 185         dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
 186         break;
 187     case _O_RDWR:
 188         dwAccess = GENERIC_READ | GENERIC_WRITE;
 189         dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
 190         break;
 191     }
 192
 193     if ((oflag & (_O_CREAT | _O_EXCL)) == (_O_CREAT | _O_EXCL))
 194         dwCreateDisposition = CREATE_NEW;
 195     else if (oflag & _O_CREAT)
 196         dwCreateDisposition = CREATE_ALWAYS;
 197
 198     handle = CreateFileA(pszFile, dwAccess, dwShareMode, NULL,
 199                          dwCreateDisposition, 0, NULL);
 200     if (handle == INVALID_HANDLE_VALUE)
 201         return 0;
 202
 203     return (INT_PTR)handle;
 204 }
 205
 206 static UINT CDECL cabinet_read(INT_PTR hf, void *pv, UINT cb)
 207 {
 208     HANDLE handle = (HANDLE)hf;
 209     DWORD read;
 210
 211     if (ReadFile(handle, pv, cb, &read, NULL))
 212         return read;
 213
 214     return 0;
 215 }
 216
 217 static UINT CDECL cabinet_write(INT_PTR hf, void *pv, UINT cb)
 218 {
 219     HANDLE handle = (HANDLE)hf;
 220     DWORD written;
 221
 222     if (WriteFile(handle, pv, cb, &written, NULL))
 223         return written;
 224
 225     return 0;
 226 }
 227
 228 static int CDECL cabinet_close(INT_PTR hf)
 229 {
 230     HANDLE handle = (HANDLE)hf;
 231     return CloseHandle(handle) ? 0 : -1;
 232 }
 233
 234 static LONG CDECL cabinet_seek(INT_PTR hf, LONG dist, int seektype)
 235 {
 236     HANDLE handle = (HANDLE)hf;
 237     /* flags are compatible and so are passed straight through */
 238     return SetFilePointer(handle, dist, NULL, seektype);
 239 }
 240
 241 static UINT CDECL msi_media_get_disk_info(MSIPACKAGE *package, MSIMEDIAINFO *mi)
 242 {
 243     MSIRECORD *row;
 244     LPWSTR ptr;
 245
 246     static const WCHAR query[] = {
 247         'S','E','L','E','C','T',' ','*',' ', 'F','R','O','M',' ',
 248         '`','M','e','d','i','a','`',' ','W','H','E','R','E',' ',
 249         '`','D','i','s','k','I','d','`',' ','=',' ','%','i',0};
 250
 251     row = MSI_QueryGetRecord(package->db, query, mi->disk_id);
 252     if (!row)
 253     {
 254         TRACE("Unable to query row\n");
 255         return ERROR_FUNCTION_FAILED;
 256     }
 257
 258     mi->disk_prompt = strdupW(MSI_RecordGetString(row, 3));
 259     mi->cabinet = strdupW(MSI_RecordGetString(row, 4));
 260     mi->volume_label = strdupW(MSI_RecordGetString(row, 5));
 261
 262     if (!mi->first_volume)
 263         mi->first_volume = strdupW(mi->volume_label);
 264
 265     ptr = strrchrW(mi->source, '\\') + 1;
 266     lstrcpyW(ptr, mi->cabinet);
 267     msiobj_release(&row->hdr);
 268
 269     return ERROR_SUCCESS;
 270 }
 271
 272 static INT_PTR cabinet_partial_file(FDINOTIFICATIONTYPE fdint,
 273                                     PFDINOTIFICATION pfdin)
 274 {
 275     MSICABDATA *data = pfdin->pv;
 276     data->mi->is_continuous = FALSE;
 277     return 0;
 278 }
 279
 280 static INT_PTR cabinet_next_cabinet(FDINOTIFICATIONTYPE fdint,
 281                                     PFDINOTIFICATION pfdin)
 282 {
 283     MSICABDATA *data = pfdin->pv;
 284     MSIMEDIAINFO *mi = data->mi;
 285     LPWSTR cab = strdupAtoW(pfdin->psz1);
 286     INT_PTR res = -1;
 287     UINT rc;
 288
 289     msi_free(mi->disk_prompt);
 290     msi_free(mi->cabinet);
 291     msi_free(mi->volume_label);
 292     mi->disk_prompt = NULL;
 293     mi->cabinet = NULL;
 294     mi->volume_label = NULL;
 295
 296     mi->disk_id++;
 297     mi->is_continuous = TRUE;
 298
 299     rc = msi_media_get_disk_info(data->package, mi);
 300     if (rc != ERROR_SUCCESS)
 301     {
 302         ERR("Failed to get next cabinet information: %d\n", rc);
 303         goto done;
 304     }
 305
 306     if (lstrcmpiW(mi->cabinet, cab))
 307     {
 308         ERR("Continuous cabinet does not match the next cabinet in the Media table\n");
 309         goto done;
 310     }
 311
 312     TRACE("Searching for %s\n", debugstr_w(mi->source));
 313
 314     res = 0;
 315     if (GetFileAttributesW(mi->source) == INVALID_FILE_ATTRIBUTES)
 316     {
 317         if (msi_change_media(data->package, mi) != ERROR_SUCCESS)
 318             res = -1;
 319     }
 320
 321 done:
 322     msi_free(cab);
 323     return res;
 324 }
 325
 326 static INT_PTR cabinet_copy_file(FDINOTIFICATIONTYPE fdint,
 327                                  PFDINOTIFICATION pfdin)
 328 {
 329     MSICABDATA *data = pfdin->pv;
 330     HANDLE handle = 0;
 331     LPWSTR path = NULL;
 332     DWORD attrs;
 333
 334     data->curfile = strdupAtoW(pfdin->psz1);
 335     if (!data->cb(data->package, data->curfile, MSICABEXTRACT_BEGINEXTRACT, &path,
 336                   &attrs, data->user))
 337     {
 338         /* We're not extracting this file, so free the filename. */
 339         msi_free(data->curfile);
 340         data->curfile = NULL;
 341         goto done;
 342     }
 343
 344     TRACE("extracting %s\n", debugstr_w(path));
 345
 346     attrs = attrs & (FILE_ATTRIBUTE_READONLY|FILE_ATTRIBUTE_HIDDEN|FILE_ATTRIBUTE_SYSTEM);
 347     if (!attrs) attrs = FILE_ATTRIBUTE_NORMAL;
 348
 349     handle = CreateFileW(path, GENERIC_READ | GENERIC_WRITE, 0,
 350                          NULL, CREATE_ALWAYS, attrs, NULL);
 351     if (handle == INVALID_HANDLE_VALUE)
 352     {
 353         DWORD err = GetLastError();
 354         DWORD attrs2 = GetFileAttributesW(path);
 355
 356         if (attrs2 == INVALID_FILE_ATTRIBUTES)
 357         {
 358             ERR("failed to create %s (error %d)\n", debugstr_w(path), err);
 359             goto done;
 360         }
 361         else if (err == ERROR_ACCESS_DENIED && (attrs2 & FILE_ATTRIBUTE_READONLY))
 362         {
 363             TRACE("removing read-only attribute on %s\n", debugstr_w(path));
 364             SetFileAttributesW( path, attrs2 & ~FILE_ATTRIBUTE_READONLY );
 365             handle = CreateFileW(path, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, attrs2, NULL);
 366
 367             if (handle != INVALID_HANDLE_VALUE) goto done;
 368             err = GetLastError();
 369         }
 370         if (err == ERROR_SHARING_VIOLATION || err == ERROR_USER_MAPPED_FILE)
 371         {
 372             WCHAR tmpfileW[MAX_PATH], *tmppathW, *p;
 373             DWORD len;
 374
 375             TRACE("file in use, scheduling rename operation\n");
 376
 377             GetTempFileNameW(szBackSlash, szMsi, 0, tmpfileW);
 378             len = strlenW(path) + strlenW(tmpfileW) + 1;
 379             if (!(tmppathW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 380                 return ERROR_OUTOFMEMORY;
 381
 382             strcpyW(tmppathW, path);
 383             if ((p = strrchrW(tmppathW, '\\'))) *p = 0;
 384             strcatW(tmppathW, tmpfileW);
 385
 386             handle = CreateFileW(tmppathW, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, attrs, NULL);
 387
 388             if (handle != INVALID_HANDLE_VALUE &&
 389                 MoveFileExW(path, NULL, MOVEFILE_DELAY_UNTIL_REBOOT) &&
 390                 MoveFileExW(tmppathW, path, MOVEFILE_DELAY_UNTIL_REBOOT))
 391             {
 392                 data->package->need_reboot = 1;
 393             }
 394             else
 395                 WARN("failed to schedule rename operation %s (error %d)\n", debugstr_w(path), GetLastError());
 396
 397             HeapFree(GetProcessHeap(), 0, tmppathW);
 398         }
 399         else
 400             WARN("failed to create %s (error %d)\n", debugstr_w(path), err);
 401     }
 402
 403 done:
 404     msi_free(path);
 405
 406     return (INT_PTR)handle;
 407 }
 408
 409 static INT_PTR cabinet_close_file_info(FDINOTIFICATIONTYPE fdint,
 410                                        PFDINOTIFICATION pfdin)
 411 {
 412     MSICABDATA *data = pfdin->pv;
 413     FILETIME ft;
 414     FILETIME ftLocal;
 415     HANDLE handle = (HANDLE)pfdin->hf;
 416
 417     data->mi->is_continuous = FALSE;
 418
 419     if (!DosDateTimeToFileTime(pfdin->date, pfdin->time, &ft))
 420         return -1;
 421     if (!LocalFileTimeToFileTime(&ft, &ftLocal))
 422         return -1;
 423     if (!SetFileTime(handle, &ftLocal, 0, &ftLocal))
 424         return -1;
 425
 426     CloseHandle(handle);
 427
 428     data->cb(data->package, data->curfile, MSICABEXTRACT_FILEEXTRACTED, NULL, NULL,
 429              data->user);
 430
 431     msi_free(data->curfile);
 432     data->curfile = NULL;
 433
 434     return 1;
 435 }
 436
 437 static INT_PTR CDECL cabinet_notify(FDINOTIFICATIONTYPE fdint, PFDINOTIFICATION pfdin)
 438 {
 439     TRACE("(%d)\n", fdint);
 440
 441     switch (fdint)
 442     {
 443     case fdintPARTIAL_FILE:
 444         return cabinet_partial_file(fdint, pfdin);
 445
 446     case fdintNEXT_CABINET:
 447         return cabinet_next_cabinet(fdint, pfdin);
 448
 449     case fdintCOPY_FILE:
 450         return cabinet_copy_file(fdint, pfdin);
 451
 452     case fdintCLOSE_FILE_INFO:
 453         return cabinet_close_file_info(fdint, pfdin);
 454
 455     default:
 456         return 0;
 457     }
 458 }
 459
 460 /***********************************************************************
 461  *            msi_cabextract
 462  *
 463  * Extract files from a cab file.
 464  */
 465 BOOL msi_cabextract(MSIPACKAGE* package, MSIMEDIAINFO *mi, LPVOID data)
 466 {
 467     LPSTR cabinet, cab_path = NULL;
 468     LPWSTR ptr;
 469     HFDI hfdi;
 470     ERF erf;
 471     BOOL ret = FALSE;
 472
 473     TRACE("Extracting %s\n", debugstr_w(mi->source));
 474
 475     hfdi = FDICreate(cabinet_alloc, cabinet_free, cabinet_open, cabinet_read,
 476                      cabinet_write, cabinet_close, cabinet_seek, 0, &erf);
 477     if (!hfdi)
 478     {
 479         ERR("FDICreate failed\n");
 480         return FALSE;
 481     }
 482
 483     ptr = strrchrW(mi->source, '\\') + 1;
 484     cabinet = strdupWtoA(ptr);
 485     if (!cabinet)
 486         goto done;
 487
 488     cab_path = strdupWtoA(mi->source);
 489     if (!cab_path)
 490         goto done;
 491
 492     cab_path[ptr - mi->source] = '\0';
 493
 494     ret = FDICopy(hfdi, cabinet, cab_path, 0, cabinet_notify, NULL, data);
 495     if (!ret)
 496         ERR("FDICopy failed\n");
 497
 498 done:
 499     FDIDestroy(hfdi);
 500     msi_free(cabinet);
 501     msi_free(cab_path);
 502
 503     if (ret)
 504         mi->is_extracted = TRUE;
 505
 506     return ret;
 507 }
 508
 509 void msi_free_media_info(MSIMEDIAINFO *mi)
 510 {
 511     msi_free(mi->disk_prompt);
 512     msi_free(mi->cabinet);
 513     msi_free(mi->volume_label);
 514     msi_free(mi->first_volume);
 515     msi_free(mi);
 516 }
 517
 518 static UINT get_drive_type(const WCHAR *path)
 519 {
 520     WCHAR root[MAX_PATH + 1];
 521
 522     strcpyW(root, path);
 523     PathStripToRootW(root);
 524     PathAddBackslashW(root);
 525
 526     return GetDriveTypeW(root);
 527 }
 528
 529 static UINT msi_load_media_info(MSIPACKAGE *package, MSIFILE *file, MSIMEDIAINFO *mi)
 530 {
 531     MSIRECORD *row;
 532     LPWSTR source_dir;
 533     LPWSTR source;
 534     DWORD options;
 535     UINT r;
 536
 537     static const WCHAR query[] = {
 538         'S','E','L','E','C','T',' ','*',' ', 'F','R','O','M',' ',
 539         '`','M','e','d','i','a','`',' ','W','H','E','R','E',' ',
 540         '`','L','a','s','t','S','e','q','u','e','n','c','e','`',' ','>','=',
 541         ' ','%','i',' ','A','N','D',' ','`','D','i','s','k','I','d','`',' ','>','=',
 542         ' ','%','i',' ','O','R','D','E','R',' ','B','Y',' ',
 543         '`','D','i','s','k','I','d','`',0};
 544
 545     row = MSI_QueryGetRecord(package->db, query, file->Sequence, mi->disk_id);
 546     if (!row)
 547     {
 548         TRACE("Unable to query row\n");
 549         return ERROR_FUNCTION_FAILED;
 550     }
 551
 552     mi->is_extracted = FALSE;
 553     mi->disk_id = MSI_RecordGetInteger(row, 1);
 554     mi->last_sequence = MSI_RecordGetInteger(row, 2);
 555     msi_free(mi->disk_prompt);
 556     mi->disk_prompt = strdupW(MSI_RecordGetString(row, 3));
 557     msi_free(mi->cabinet);
 558     mi->cabinet = strdupW(MSI_RecordGetString(row, 4));
 559     msi_free(mi->volume_label);
 560     mi->volume_label = strdupW(MSI_RecordGetString(row, 5));
 561     msiobj_release(&row->hdr);
 562
 563     if (!mi->first_volume)
 564         mi->first_volume = strdupW(mi->volume_label);
 565
 566     source_dir = msi_dup_property(package, cszSourceDir);
 567     lstrcpyW(mi->source, source_dir);
 568     mi->type = get_drive_type(source_dir);
 569
 570     if (file->IsCompressed && mi->cabinet)
 571     {
 572         if (mi->cabinet[0] == '#')
 573         {
 574             r = writeout_cabinet_stream(package, &mi->cabinet[1], mi->source);
 575             if (r != ERROR_SUCCESS)
 576             {
 577                 ERR("Failed to extract cabinet stream\n");
 578                 return ERROR_FUNCTION_FAILED;
 579             }
 580         }
 581         else
 582             lstrcatW(mi->source, mi->cabinet);
 583     }
 584
 585     options = MSICODE_PRODUCT;
 586     if (mi->type == DRIVE_CDROM || mi->type == DRIVE_REMOVABLE)
 587     {
 588         source = source_dir;
 589         options |= MSISOURCETYPE_MEDIA;
 590     }
 591     else if (package->BaseURL && UrlIsW(package->BaseURL, URLIS_URL))
 592     {
 593         source = package->BaseURL;
 594         options |= MSISOURCETYPE_URL;
 595     }
 596     else
 597     {
 598         source = mi->source;
 599         options |= MSISOURCETYPE_NETWORK;
 600     }
 601
 602     msi_package_add_media_disk(package, package->Context,
 603                                MSICODE_PRODUCT, mi->disk_id,
 604                                mi->volume_label, mi->disk_prompt);
 605
 606     msi_package_add_info(package, package->Context,
 607                          options, INSTALLPROPERTY_LASTUSEDSOURCEW, source);
 608
 609     msi_free(source_dir);
 610     return ERROR_SUCCESS;
 611 }
 612
 613 /* FIXME: search NETWORK and URL sources as well */
 614 static UINT find_published_source(MSIPACKAGE *package, MSIMEDIAINFO *mi)
 615 {
 616     WCHAR source[MAX_PATH];
 617     WCHAR volume[MAX_PATH];
 618     WCHAR prompt[MAX_PATH];
 619     DWORD volumesz, promptsz;
 620     DWORD index, size, id;
 621     UINT r;
 622
 623     size = MAX_PATH;
 624     r = MsiSourceListGetInfoW(package->ProductCode, NULL,
 625                               package->Context, MSICODE_PRODUCT,
 626                               INSTALLPROPERTY_LASTUSEDSOURCEW, source, &size);
 627     if (r != ERROR_SUCCESS)
 628         return r;
 629
 630     index = 0;
 631     volumesz = MAX_PATH;
 632     promptsz = MAX_PATH;
 633     while (MsiSourceListEnumMediaDisksW(package->ProductCode, NULL,
 634                                         package->Context,
 635                                         MSICODE_PRODUCT, index++, &id,
 636                                         volume, &volumesz, prompt, &promptsz) == ERROR_SUCCESS)
 637     {
 638         mi->disk_id = id;
 639         mi->volume_label = msi_realloc(mi->volume_label, ++volumesz * sizeof(WCHAR));
 640         lstrcpyW(mi->volume_label, volume);
 641         mi->disk_prompt = msi_realloc(mi->disk_prompt, ++promptsz * sizeof(WCHAR));
 642         lstrcpyW(mi->disk_prompt, prompt);
 643
 644         if (source_matches_volume(mi, source))
 645         {
 646             /* FIXME: what about SourceDir */
 647             lstrcpyW(mi->source, source);
 648             return ERROR_SUCCESS;
 649         }
 650     }
 651
 652     return ERROR_FUNCTION_FAILED;
 653 }
 654
 655 UINT ready_media(MSIPACKAGE *package, MSIFILE *file, MSIMEDIAINFO *mi)
 656 {
 657     UINT rc = ERROR_SUCCESS;
 658
 659     /* media info for continuous cabinet is already loaded */
 660     if (mi->is_continuous)
 661         return ERROR_SUCCESS;
 662
 663     rc = msi_load_media_info(package, file, mi);
 664     if (rc != ERROR_SUCCESS)
 665     {
 666         ERR("Unable to load media info\n");
 667         return ERROR_FUNCTION_FAILED;
 668     }
 669
 670     /* cabinet is internal, no checks needed */
 671     if (!mi->cabinet || mi->cabinet[0] == '#')
 672         return ERROR_SUCCESS;
 673
 674     /* package should be downloaded */
 675     if (file->IsCompressed &&
 676         GetFileAttributesW(mi->source) == INVALID_FILE_ATTRIBUTES &&
 677         package->BaseURL && UrlIsW(package->BaseURL, URLIS_URL))
 678     {
 679         WCHAR temppath[MAX_PATH];
 680
 681         msi_download_file(mi->source, temppath);
 682         lstrcpyW(mi->source, temppath);
 683         return ERROR_SUCCESS;
 684     }
 685
 686     /* check volume matches, change media if not */
 687     if (mi->volume_label && mi->disk_id > 1 &&
 688         lstrcmpW(mi->first_volume, mi->volume_label))
 689     {
 690         LPWSTR source = msi_dup_property(package, cszSourceDir);
 691         BOOL matches;
 692
 693         matches = source_matches_volume(mi, source);
 694         msi_free(source);
 695
 696         if ((mi->type == DRIVE_CDROM || mi->type == DRIVE_REMOVABLE) && !matches)
 697         {
 698             rc = msi_change_media(package, mi);
 699             if (rc != ERROR_SUCCESS)
 700                 return rc;
 701         }
 702     }
 703
 704     if (file->IsCompressed &&
 705         GetFileAttributesW(mi->source) == INVALID_FILE_ATTRIBUTES)
 706     {
 707         rc = find_published_source(package, mi);
 708         if (rc != ERROR_SUCCESS)
 709         {
 710             ERR("Cabinet not found: %s\n", debugstr_w(mi->source));
 711             return ERROR_INSTALL_FAILURE;
 712         }
 713     }
 714
 715     return ERROR_SUCCESS;
 716 }