dlls/appwiz.cpl/addons.c

   1 /*
   2  * Copyright 2006-2010 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20 #include <fcntl.h>
  21 #include <stdio.h>
  22 #include <errno.h>
  23
  24 #define COBJMACROS
  25 #define NONAMELESSUNION
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winuser.h"
  30 #include "cpl.h"
  31 #include "winreg.h"
  32 #include "ole2.h"
  33 #include "commctrl.h"
  34 #include "advpub.h"
  35 #include "wininet.h"
  36 #include "pathcch.h"
  37 #include "shellapi.h"
  38 #include "urlmon.h"
  39 #include "msi.h"
  40 #include "bcrypt.h"
  41
  42 #include "appwiz.h"
  43 #include "res.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(appwizcpl);
  48
  49 #define GECKO_VERSION "2.47.2"
  50 #ifdef __i386__
  51 #define GECKO_ARCH "x86"
  52 #define GECKO_SHA "e520ce7336cd420cd09c91337d87e74bb420300fd5cbc6f724c1802766b6a61d"
  53 #elif defined(__x86_64__)
  54 #define GECKO_ARCH "x86_64"
  55 #define GECKO_SHA "0596761024823ff3c21f13e1cd5cd3e89dccc698294d62974d8930aeda86ce45"
  56 #else
  57 #define GECKO_ARCH ""
  58 #define GECKO_SHA "???"
  59 #endif
  60
  61 #define MONO_VERSION "7.1.1"
  62 #if defined(__i386__) || defined(__x86_64__)
  63 #define MONO_ARCH "x86"
  64 #define MONO_SHA "9dc8e5603b7bc64354eb94ae4ea0f6821424767a3ff44ff0d19e346a490c11ea"
  65 #else
  66 #define MONO_ARCH ""
  67 #define MONO_SHA "???"
  68 #endif
  69
  70 typedef struct {
  71     const char *version;
  72     const WCHAR *file_name;
  73     const WCHAR *subdir_name;
  74     const char *sha;
  75     const char *url_default;
  76     const char *config_key;
  77     const char *url_config_key;
  78     const char *dir_config_key;
  79     LPCWSTR dialog_template;
  80 } addon_info_t;
  81
  82 /* Download addon files over HTTP because Wine depends on an external library
  83  * for TLS, so we can't be sure that HTTPS will work. The integrity of each file
  84  * is checked with a hardcoded cryptographically secure hash. */
  85 static const addon_info_t addons_info[] = {
  86     {
  87         GECKO_VERSION,
  88         L"wine-gecko-" GECKO_VERSION "-" GECKO_ARCH ".msi",
  89         L"gecko",
  90         GECKO_SHA,
  91         "http://source.winehq.org/winegecko.php",
  92         "MSHTML", "GeckoUrl", "GeckoCabDir",
  93         MAKEINTRESOURCEW(ID_DWL_GECKO_DIALOG)
  94     },
  95     {
  96         MONO_VERSION,
  97         L"wine-mono-" MONO_VERSION "-" MONO_ARCH ".msi",
  98         L"mono",
  99         MONO_SHA,
 100         "http://source.winehq.org/winemono.php",
 101         "Dotnet", "MonoUrl", "MonoCabDir",
 102         MAKEINTRESOURCEW(ID_DWL_MONO_DIALOG)
 103     }
 104 };
 105
 106 static const addon_info_t *addon;
 107
 108 static HWND install_dialog = NULL;
 109 static LPWSTR url = NULL;
 110 static IBinding *dwl_binding;
 111 static WCHAR *msi_file;
 112
 113 extern const char * CDECL wine_get_version(void);
 114
 115 static WCHAR * (CDECL *p_wine_get_dos_file_name)(const char*);
 116
 117 static BOOL sha_check(const WCHAR *file_name)
 118 {
 119     const unsigned char *file_map;
 120     HANDLE file, map;
 121     DWORD size, i;
 122     BCRYPT_HASH_HANDLE hash = NULL;
 123     BCRYPT_ALG_HANDLE alg = NULL;
 124     UCHAR sha[32];
 125     char buf[1024];
 126     BOOL ret = FALSE;
 127
 128     file = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
 129     if(file == INVALID_HANDLE_VALUE) {
 130         WARN("Could not open file: %lu\n", GetLastError());
 131         return FALSE;
 132     }
 133
 134     size = GetFileSize(file, NULL);
 135
 136     map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 137     CloseHandle(file);
 138     if(!map)
 139         return FALSE;
 140
 141     file_map = MapViewOfFile(map, FILE_MAP_READ, 0, 0, 0);
 142     CloseHandle(map);
 143     if(!file_map)
 144         return FALSE;
 145
 146     if(BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA256_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0))
 147         goto end;
 148     if(BCryptCreateHash(alg, &hash, NULL, 0, NULL, 0, 0))
 149         goto end;
 150     if(BCryptHashData(hash, (UCHAR *)file_map, size, 0))
 151         goto end;
 152     if(BCryptFinishHash(hash, sha, sizeof(sha), 0))
 153         goto end;
 154
 155     for(i=0; i < sizeof(sha); i++)
 156         sprintf(buf + i * 2, "%02x", sha[i]);
 157
 158     ret = !strcmp(buf, addon->sha);
 159     if(!ret)
 160         WARN("Got %s, expected %s\n", buf, addon->sha);
 161
 162 end:
 163     UnmapViewOfFile(file_map);
 164     if(hash) BCryptDestroyHash(hash);
 165     if(alg) BCryptCloseAlgorithmProvider(alg, 0);
 166     return ret;
 167 }
 168
 169 static void set_status(DWORD id)
 170 {
 171     HWND status = GetDlgItem(install_dialog, ID_DWL_STATUS);
 172     WCHAR buf[64];
 173
 174     LoadStringW(hInst, id, buf, ARRAY_SIZE(buf));
 175     SendMessageW(status, WM_SETTEXT, 0, (LPARAM)buf);
 176 }
 177
 178 enum install_res {
 179     INSTALL_OK = 0,
 180     INSTALL_FAILED,
 181     INSTALL_NEXT,
 182 };
 183
 184 static enum install_res install_file(const WCHAR *file_name)
 185 {
 186     ULONG res;
 187
 188     res = MsiInstallProductW(file_name, NULL);
 189     if(res == ERROR_PRODUCT_VERSION)
 190         res = MsiInstallProductW(file_name, L"REINSTALL=ALL REINSTALLMODE=vomus");
 191     if(res != ERROR_SUCCESS) {
 192         ERR("MsiInstallProduct failed: %lu\n", res);
 193         return INSTALL_FAILED;
 194     }
 195
 196     return INSTALL_OK;
 197 }
 198
 199 static enum install_res install_from_dos_file(const WCHAR *dir, const WCHAR *subdir, const WCHAR *file_name)
 200 {
 201     WCHAR *path, *canonical_path;
 202     enum install_res ret;
 203     int len = lstrlenW( dir );
 204     int size = len + 1;
 205     HRESULT hr;
 206
 207     size += lstrlenW( subdir ) + lstrlenW( file_name ) + 2;
 208     if (!(path = heap_alloc( size * sizeof(WCHAR) ))) return INSTALL_FAILED;
 209
 210     lstrcpyW( path, dir );
 211     if (!wcsncmp( path, L"\\??\\", 4 ))  path[1] = '\\';  /* change \??\ into \\?\ */
 212     if (len && path[len-1] != '/' && path[len-1] != '\\') path[len++] = '\\';
 213
 214     lstrcpyW( path + len, subdir );
 215     lstrcatW( path, L"\\" );
 216     lstrcatW( path, file_name );
 217
 218     hr = PathAllocCanonicalize( path, PATHCCH_ALLOW_LONG_PATHS, &canonical_path );
 219     if (FAILED( hr ))
 220     {
 221         ERR( "Failed to canonicalize %s, hr %#lx\n", debugstr_w(path), hr );
 222         heap_free( path );
 223         return INSTALL_NEXT;
 224     }
 225     heap_free( path );
 226
 227     if (GetFileAttributesW( canonical_path ) == INVALID_FILE_ATTRIBUTES)
 228     {
 229         TRACE( "%s not found\n", debugstr_w(canonical_path) );
 230         LocalFree( canonical_path );
 231         return INSTALL_NEXT;
 232     }
 233
 234     ret = install_file( canonical_path );
 235
 236     LocalFree( canonical_path );
 237     return ret;
 238 }
 239
 240 static enum install_res install_from_unix_file(const char *dir, const WCHAR *subdir, const WCHAR *file_name)
 241 {
 242     WCHAR *dos_dir;
 243     enum install_res ret = INSTALL_NEXT;
 244
 245     if (p_wine_get_dos_file_name && (dos_dir = p_wine_get_dos_file_name( dir )))
 246     {
 247         ret = install_from_dos_file( dos_dir, subdir, file_name );
 248         heap_free( dos_dir );
 249     }
 250     return ret;
 251 }
 252
 253 static HKEY open_config_key(void)
 254 {
 255     HKEY hkey, ret;
 256     DWORD res;
 257
 258     /* @@ Wine registry key: HKCU\Software\Wine\$config_key */
 259     res = RegOpenKeyW(HKEY_CURRENT_USER, L"Software\\Wine", &hkey);
 260     if(res != ERROR_SUCCESS)
 261         return NULL;
 262
 263     res = RegOpenKeyA(hkey, addon->config_key, &ret);
 264     RegCloseKey(hkey);
 265     return res == ERROR_SUCCESS ? ret : NULL;
 266 }
 267
 268 static enum install_res install_from_registered_dir(void)
 269 {
 270     char *package_dir;
 271     HKEY hkey;
 272     DWORD res, type, size = MAX_PATH;
 273     enum install_res ret;
 274
 275     hkey = open_config_key();
 276     if(!hkey)
 277         return INSTALL_NEXT;
 278
 279     package_dir = heap_alloc(size);
 280     res = RegGetValueA(hkey, NULL, addon->dir_config_key, RRF_RT_ANY, &type, (PBYTE)package_dir, &size);
 281     if(res == ERROR_MORE_DATA) {
 282         package_dir = heap_realloc(package_dir, size);
 283         res = RegGetValueA(hkey, NULL, addon->dir_config_key, RRF_RT_ANY, &type, (PBYTE)package_dir, &size);
 284     }
 285     RegCloseKey(hkey);
 286     if(res == ERROR_FILE_NOT_FOUND) {
 287         heap_free(package_dir);
 288         return INSTALL_NEXT;
 289     } else if(res != ERROR_SUCCESS || (type != REG_SZ && type != REG_EXPAND_SZ)) {
 290         heap_free(package_dir);
 291         return INSTALL_FAILED;
 292     }
 293
 294     ret = install_from_unix_file(package_dir, L"", addon->file_name);
 295
 296     heap_free(package_dir);
 297     return ret;
 298 }
 299
 300 static enum install_res install_from_default_dir(void)
 301 {
 302     const WCHAR *package_dir;
 303     WCHAR *dir_buf = NULL;
 304     enum install_res ret = INSTALL_NEXT;
 305
 306     if ((package_dir = _wgetenv( L"WINEBUILDDIR" )))
 307     {
 308         dir_buf = heap_alloc( lstrlenW(package_dir) * sizeof(WCHAR) + sizeof(L"\\..\\") );
 309         lstrcpyW( dir_buf, package_dir );
 310         lstrcatW( dir_buf, L"\\..\\" );
 311         package_dir = dir_buf;
 312     }
 313     else package_dir = _wgetenv( L"WINEDATADIR" );
 314
 315     if (package_dir)
 316     {
 317         ret = install_from_dos_file(package_dir, addon->subdir_name, addon->file_name);
 318         heap_free(dir_buf);
 319     }
 320
 321     if (ret == INSTALL_NEXT)
 322         ret = install_from_unix_file(INSTALL_DATADIR "/wine/", addon->subdir_name, addon->file_name);
 323     if (ret == INSTALL_NEXT && strcmp(INSTALL_DATADIR, "/usr/share") != 0)
 324         ret = install_from_unix_file("/usr/share/wine/", addon->subdir_name, addon->file_name);
 325     if (ret == INSTALL_NEXT)
 326         ret = install_from_unix_file("/opt/wine/", addon->subdir_name, addon->file_name);
 327     return ret;
 328 }
 329
 330 static WCHAR *get_cache_file_name(BOOL ensure_exists)
 331 {
 332     const char *xdg_dir;
 333     const WCHAR *home_dir;
 334     WCHAR *cache_dir, *ret;
 335     size_t len, size;
 336
 337     xdg_dir = getenv( "XDG_CACHE_HOME" );
 338     if (xdg_dir && *xdg_dir && p_wine_get_dos_file_name)
 339     {
 340         if (!(cache_dir = p_wine_get_dos_file_name( xdg_dir ))) return NULL;
 341     }
 342     else if ((home_dir = _wgetenv( L"WINEHOMEDIR" )))
 343     {
 344         if (!(cache_dir = heap_alloc( lstrlenW(home_dir) * sizeof(WCHAR) + sizeof(L"\\.cache") ))) return NULL;
 345         lstrcpyW( cache_dir, home_dir );
 346         lstrcatW( cache_dir, L"\\.cache" );
 347         cache_dir[1] = '\\';  /* change \??\ into \\?\ */
 348     }
 349     else return NULL;
 350
 351     if (ensure_exists && !CreateDirectoryW( cache_dir, NULL ) && GetLastError() != ERROR_ALREADY_EXISTS)
 352     {
 353         WARN( "%s does not exist and could not be created (%lu)\n", debugstr_w(cache_dir), GetLastError() );
 354         heap_free( cache_dir );
 355         return NULL;
 356     }
 357
 358     size = lstrlenW( cache_dir ) + ARRAY_SIZE(L"\\wine") + lstrlenW( addon->file_name ) + 1;
 359     if (!(ret = heap_alloc( size * sizeof(WCHAR) )))
 360     {
 361         heap_free( cache_dir );
 362         return NULL;
 363     }
 364     lstrcpyW( ret, cache_dir );
 365     lstrcatW( ret, L"\\wine" );
 366     heap_free( cache_dir );
 367
 368     if (ensure_exists && !CreateDirectoryW( ret, NULL ) && GetLastError() != ERROR_ALREADY_EXISTS)
 369     {
 370         WARN( "%s does not exist and could not be created (%lu)\n", debugstr_w(ret), GetLastError() );
 371         heap_free( ret );
 372         return NULL;
 373     }
 374     len = lstrlenW( ret );
 375     ret[len++] = '\\';
 376     lstrcpyW( ret + len, addon->file_name );
 377
 378     TRACE( "got %s\n", debugstr_w(ret) );
 379     return ret;
 380 }
 381
 382 static enum install_res install_from_cache(void)
 383 {
 384     WCHAR *cache_file_name;
 385     enum install_res res;
 386
 387     cache_file_name = get_cache_file_name(FALSE);
 388     if(!cache_file_name)
 389         return INSTALL_NEXT;
 390
 391     if(!sha_check(cache_file_name)) {
 392         WARN("could not validate checksum\n");
 393         DeleteFileW(cache_file_name);
 394         heap_free(cache_file_name);
 395         return INSTALL_NEXT;
 396     }
 397
 398     res = install_file(cache_file_name);
 399     heap_free(cache_file_name);
 400     return res;
 401 }
 402
 403 static IInternetBindInfo InstallCallbackBindInfo;
 404
 405 static HRESULT WINAPI InstallCallback_QueryInterface(IBindStatusCallback *iface,
 406         REFIID riid, void **ppv)
 407 {
 408     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IBindStatusCallback, riid)) {
 409         *ppv = iface;
 410         return S_OK;
 411     }
 412
 413     if(IsEqualGUID(&IID_IInternetBindInfo, riid)) {
 414         TRACE("IID_IInternetBindInfo\n");
 415         *ppv = &InstallCallbackBindInfo;
 416         return S_OK;
 417     }
 418
 419     return E_INVALIDARG;
 420 }
 421
 422 static ULONG WINAPI InstallCallback_AddRef(IBindStatusCallback *iface)
 423 {
 424     return 2;
 425 }
 426
 427 static ULONG WINAPI InstallCallback_Release(IBindStatusCallback *iface)
 428 {
 429     return 1;
 430 }
 431
 432 static HRESULT WINAPI InstallCallback_OnStartBinding(IBindStatusCallback *iface,
 433         DWORD dwReserved, IBinding *pib)
 434 {
 435     set_status(IDS_DOWNLOADING);
 436
 437     IBinding_AddRef(pib);
 438     dwl_binding = pib;
 439
 440     return S_OK;
 441 }
 442
 443 static HRESULT WINAPI InstallCallback_GetPriority(IBindStatusCallback *iface,
 444         LONG *pnPriority)
 445 {
 446     return E_NOTIMPL;
 447 }
 448
 449 static HRESULT WINAPI InstallCallback_OnLowResource(IBindStatusCallback *iface,
 450        DWORD dwReserved)
 451 {
 452     return E_NOTIMPL;
 453 }
 454
 455 static HRESULT WINAPI InstallCallback_OnProgress(IBindStatusCallback *iface, ULONG ulProgress,
 456         ULONG ulProgressMax, ULONG ulStatusCode, LPCWSTR szStatusText)
 457 {
 458     HWND progress = GetDlgItem(install_dialog, ID_DWL_PROGRESS);
 459
 460     if(ulProgressMax)
 461         SendMessageW(progress, PBM_SETRANGE32, 0, ulProgressMax);
 462     if(ulProgress)
 463         SendMessageW(progress, PBM_SETPOS, ulProgress, 0);
 464
 465     return S_OK;
 466 }
 467
 468 static HRESULT WINAPI InstallCallback_OnStopBinding(IBindStatusCallback *iface,
 469         HRESULT hresult, LPCWSTR szError)
 470 {
 471     if(dwl_binding) {
 472         IBinding_Release(dwl_binding);
 473         dwl_binding = NULL;
 474     }
 475
 476     if(FAILED(hresult)) {
 477         if(hresult == E_ABORT)
 478             TRACE("Binding aborted\n");
 479         else
 480             ERR("Binding failed %08lx\n", hresult);
 481         return S_OK;
 482     }
 483
 484     if(!msi_file) {
 485         ERR("No MSI file\n");
 486         return E_FAIL;
 487     }
 488
 489     set_status(IDS_INSTALLING);
 490     EnableWindow(GetDlgItem(install_dialog, IDCANCEL), 0);
 491
 492     if(sha_check(msi_file)) {
 493         WCHAR *cache_file_name;
 494
 495         install_file(msi_file);
 496
 497         cache_file_name = get_cache_file_name(TRUE);
 498         if(cache_file_name) {
 499             CopyFileW(msi_file, cache_file_name, FALSE);
 500             heap_free(cache_file_name);
 501         }
 502     }else {
 503         WCHAR message[256];
 504
 505         if(LoadStringW(hInst, IDS_INVALID_SHA, message, ARRAY_SIZE(message)))
 506             MessageBoxW(NULL, message, NULL, MB_ICONERROR);
 507     }
 508
 509     DeleteFileW(msi_file);
 510     heap_free(msi_file);
 511     msi_file = NULL;
 512
 513     EndDialog(install_dialog, 0);
 514     return S_OK;
 515 }
 516
 517 static HRESULT WINAPI InstallCallback_GetBindInfo(IBindStatusCallback *iface,
 518         DWORD* grfBINDF, BINDINFO* pbindinfo)
 519 {
 520     TRACE("()\n");
 521
 522     *grfBINDF = BINDF_ASYNCHRONOUS;
 523     return S_OK;
 524 }
 525
 526 static HRESULT WINAPI InstallCallback_OnDataAvailable(IBindStatusCallback *iface, DWORD grfBSCF,
 527         DWORD dwSize, FORMATETC* pformatetc, STGMEDIUM* pstgmed)
 528 {
 529     if(!msi_file) {
 530         msi_file = heap_strdupW(pstgmed->u.lpszFileName);
 531         TRACE("got file name %s\n", debugstr_w(msi_file));
 532     }
 533
 534     return S_OK;
 535 }
 536
 537 static HRESULT WINAPI InstallCallback_OnObjectAvailable(IBindStatusCallback *iface,
 538         REFIID riid, IUnknown* punk)
 539 {
 540     ERR("\n");
 541     return E_NOTIMPL;
 542 }
 543
 544 static const IBindStatusCallbackVtbl InstallCallbackVtbl = {
 545     InstallCallback_QueryInterface,
 546     InstallCallback_AddRef,
 547     InstallCallback_Release,
 548     InstallCallback_OnStartBinding,
 549     InstallCallback_GetPriority,
 550     InstallCallback_OnLowResource,
 551     InstallCallback_OnProgress,
 552     InstallCallback_OnStopBinding,
 553     InstallCallback_GetBindInfo,
 554     InstallCallback_OnDataAvailable,
 555     InstallCallback_OnObjectAvailable
 556 };
 557
 558 static IBindStatusCallback InstallCallback = { &InstallCallbackVtbl };
 559
 560 static HRESULT WINAPI InstallCallbackBindInfo_QueryInterface(IInternetBindInfo *iface, REFIID riid, void **ppv)
 561 {
 562     return IBindStatusCallback_QueryInterface(&InstallCallback, riid, ppv);
 563 }
 564
 565 static ULONG WINAPI InstallCallbackBindInfo_AddRef(IInternetBindInfo *iface)
 566 {
 567     return 2;
 568 }
 569
 570 static ULONG WINAPI InstallCallbackBindInfo_Release(IInternetBindInfo *iface)
 571 {
 572     return 1;
 573 }
 574
 575 static HRESULT WINAPI InstallCallbackBindInfo_GetBindInfo(IInternetBindInfo *iface, DWORD *bindf, BINDINFO *bindinfo)
 576 {
 577     ERR("\n");
 578     return E_NOTIMPL;
 579 }
 580
 581 static HRESULT WINAPI InstallCallbackBindInfo_GetBindString(IInternetBindInfo *iface, ULONG string_type,
 582         WCHAR **strs, ULONG cnt, ULONG *fetched)
 583 {
 584     switch(string_type) {
 585     case BINDSTRING_USER_AGENT:
 586         TRACE("BINDSTRING_USER_AGENT\n");
 587
 588         *strs = CoTaskMemAlloc(sizeof(L"Wine Addon Downloader"));
 589         if(!*strs)
 590             return E_OUTOFMEMORY;
 591
 592         lstrcpyW(*strs, L"Wine Addon Downloader");
 593         *fetched = 1;
 594         return S_OK;
 595     }
 596
 597     return E_NOTIMPL;
 598 }
 599
 600 static const IInternetBindInfoVtbl InstallCallbackBindInfoVtbl = {
 601     InstallCallbackBindInfo_QueryInterface,
 602     InstallCallbackBindInfo_AddRef,
 603     InstallCallbackBindInfo_Release,
 604     InstallCallbackBindInfo_GetBindInfo,
 605     InstallCallbackBindInfo_GetBindString
 606 };
 607
 608 static IInternetBindInfo InstallCallbackBindInfo = { &InstallCallbackBindInfoVtbl };
 609
 610 static void append_url_params( WCHAR *url )
 611 {
 612     DWORD size = INTERNET_MAX_URL_LENGTH * sizeof(WCHAR);
 613     DWORD len = lstrlenW(url);
 614
 615     lstrcpyW(url+len, L"?arch=");
 616     len += lstrlenW(L"?arch=");
 617     len += MultiByteToWideChar(CP_ACP, 0, GECKO_ARCH, sizeof(GECKO_ARCH),
 618                                url+len, size/sizeof(WCHAR)-len)-1;
 619     lstrcpyW(url+len, L"&v=");
 620     len += lstrlenW(L"&v=");
 621     len += MultiByteToWideChar(CP_ACP, 0, addon->version, -1, url+len, size/sizeof(WCHAR)-len)-1;
 622     lstrcpyW(url+len, L"&winev=");
 623     len += lstrlenW(L"&winev=");
 624     MultiByteToWideChar(CP_ACP, 0, wine_get_version(), -1, url+len, size/sizeof(WCHAR)-len);
 625 }
 626
 627 static LPWSTR get_url(void)
 628 {
 629     DWORD size = INTERNET_MAX_URL_LENGTH*sizeof(WCHAR);
 630     WCHAR *url, *config_key;
 631     HKEY hkey;
 632     DWORD res, type;
 633     DWORD returned_size;
 634
 635     static const WCHAR httpW[] = {'h','t','t','p'};
 636
 637     url = heap_alloc(size);
 638     returned_size = size;
 639
 640     hkey = open_config_key();
 641     if (hkey)
 642     {
 643         config_key = heap_strdupAtoW(addon->url_config_key);
 644         res = RegQueryValueExW(hkey, config_key, NULL, &type, (LPBYTE)url, &returned_size);
 645         heap_free(config_key);
 646         RegCloseKey(hkey);
 647         if(res == ERROR_SUCCESS && type == REG_SZ) goto found;
 648     }
 649
 650     MultiByteToWideChar( CP_ACP, 0, addon->url_default, -1, url, size / sizeof(WCHAR) );
 651
 652 found:
 653     if (returned_size > sizeof(httpW) && !memcmp(url, httpW, sizeof(httpW))) append_url_params( url );
 654
 655     TRACE("Got URL %s\n", debugstr_w(url));
 656     return url;
 657 }
 658
 659 static BOOL start_download(void)
 660 {
 661     IBindCtx *bind_ctx;
 662     IMoniker *mon;
 663     IUnknown *tmp;
 664     HRESULT hres;
 665
 666     hres = CreateURLMoniker(NULL, url, &mon);
 667     if(FAILED(hres))
 668         return FALSE;
 669
 670     hres = CreateAsyncBindCtx(0, &InstallCallback, NULL, &bind_ctx);
 671     if(SUCCEEDED(hres)) {
 672         hres = IMoniker_BindToStorage(mon, bind_ctx, NULL, &IID_IUnknown, (void**)&tmp);
 673         IBindCtx_Release(bind_ctx);
 674     }
 675     IMoniker_Release(mon);
 676     if(FAILED(hres))
 677         return FALSE;
 678
 679     if(tmp)
 680         IUnknown_Release(tmp);
 681     return TRUE;
 682 }
 683
 684 static void run_winebrowser(const WCHAR *url)
 685 {
 686     PROCESS_INFORMATION pi;
 687     STARTUPINFOW si;
 688     WCHAR app[MAX_PATH];
 689     LONG len, url_len;
 690     WCHAR *args;
 691     BOOL ret;
 692
 693     url_len = lstrlenW(url);
 694
 695     len = GetSystemDirectoryW(app, MAX_PATH - ARRAY_SIZE(L"\\winebrowser.exe"));
 696     lstrcpyW(app+len, L"\\winebrowser.exe");
 697     len += ARRAY_SIZE(L"\\winebrowser.exe") - 1;
 698
 699     args = heap_alloc((len+1+url_len)*sizeof(WCHAR));
 700     if(!args)
 701         return;
 702
 703     memcpy(args, app, len*sizeof(WCHAR));
 704     args[len++] = ' ';
 705     memcpy(args+len, url, (url_len+1) * sizeof(WCHAR));
 706
 707     TRACE("starting %s\n", debugstr_w(args));
 708
 709     memset(&si, 0, sizeof(si));
 710     si.cb = sizeof(si);
 711     ret = CreateProcessW(app, args, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi);
 712     heap_free(args);
 713     if (ret) {
 714         CloseHandle(pi.hThread);
 715         CloseHandle(pi.hProcess);
 716     }
 717 }
 718
 719 static INT_PTR CALLBACK installer_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 720 {
 721     switch(msg) {
 722     case WM_INITDIALOG:
 723         ShowWindow(GetDlgItem(hwnd, ID_DWL_PROGRESS), SW_HIDE);
 724         install_dialog = hwnd;
 725         return TRUE;
 726
 727     case WM_NOTIFY:
 728         switch (((NMHDR *)lParam)->code)
 729         {
 730         case NM_CLICK:
 731         case NM_RETURN:
 732             if (wParam == ID_DWL_STATUS)
 733                 run_winebrowser(((NMLINK*)lParam)->item.szUrl);
 734             break;
 735         }
 736         break;
 737
 738     case WM_COMMAND:
 739         switch(wParam) {
 740         case IDCANCEL:
 741             if(dwl_binding)
 742                 IBinding_Abort(dwl_binding);
 743             EndDialog(hwnd, 0);
 744             return FALSE;
 745
 746         case ID_DWL_INSTALL:
 747             ShowWindow(GetDlgItem(hwnd, ID_DWL_PROGRESS), SW_SHOW);
 748             EnableWindow(GetDlgItem(hwnd, ID_DWL_INSTALL), 0);
 749             if(!start_download())
 750                 EndDialog(install_dialog, 0);
 751         }
 752     }
 753
 754     return FALSE;
 755 }
 756
 757 BOOL install_addon(addon_t addon_type)
 758 {
 759     if(!*GECKO_ARCH)
 760         return FALSE;
 761
 762     addon = addons_info+addon_type;
 763
 764     p_wine_get_dos_file_name = (void *)GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "wine_get_dos_file_name");
 765
 766     /*
 767      * Try to find addon .msi file in following order:
 768      * - directory stored in $dir_config_key value of HKCU/Software/Wine/$config_key key
 769      * - $datadir/$addon_subdir/
 770      * - $INSTALL_DATADIR/wine/$addon_subdir/
 771      * - /usr/share/wine/$addon_subdir/
 772      * - /opt/wine/$addon_subdir/
 773      * - download from URL stored in $url_config_key value of HKCU/Software/Wine/$config_key key
 774      */
 775     if (install_from_registered_dir() == INSTALL_NEXT
 776         && install_from_default_dir() == INSTALL_NEXT
 777         && install_from_cache() == INSTALL_NEXT
 778         && (url = get_url()))
 779         DialogBoxW(hInst, addon->dialog_template, 0, installer_proc);
 780
 781     heap_free(url);
 782     url = NULL;
 783     return TRUE;
 784 }