git.oblomov.eu Git - wine/blob - dlls/urlmon/session.c

   1 /*
   2  * Copyright 2005-2006 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 "urlmon_main.h"
  20 #include "winreg.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  25
  26 typedef struct {
  27     LPWSTR protocol;
  28     IClassFactory *cf;
  29     CLSID clsid;
  30     BOOL urlmon;
  31
  32     struct list entry;
  33 } name_space;
  34
  35 typedef struct {
  36     IClassFactory *cf;
  37     CLSID clsid;
  38     LPWSTR mime;
  39
  40     struct list entry;
  41 } mime_filter;
  42
  43 static struct list name_space_list = LIST_INIT(name_space_list);
  44 static struct list mime_filter_list = LIST_INIT(mime_filter_list);
  45
  46 static CRITICAL_SECTION session_cs;
  47 static CRITICAL_SECTION_DEBUG session_cs_dbg =
  48 {
  49     0, 0, &session_cs,
  50     { &session_cs_dbg.ProcessLocksList, &session_cs_dbg.ProcessLocksList },
  51       0, 0, { (DWORD_PTR)(__FILE__ ": session") }
  52 };
  53 static CRITICAL_SECTION session_cs = { &session_cs_dbg, -1, 0, 0, 0, 0 };
  54
  55 static const WCHAR internet_settings_keyW[] =
  56     {'S','O','F','T','W','A','R','E',
  57      '\\','M','i','c','r','o','s','o','f','t',
  58      '\\','W','i','n','d','o','w','s',
  59      '\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n',
  60      '\\','I','n','t','e','r','n','e','t',' ','S','e','t','t','i','n','g','s',0};
  61
  62 static name_space *find_name_space(LPCWSTR protocol)
  63 {
  64     name_space *iter;
  65
  66     LIST_FOR_EACH_ENTRY(iter, &name_space_list, name_space, entry) {
  67         if(!strcmpiW(iter->protocol, protocol))
  68             return iter;
  69     }
  70
  71     return NULL;
  72 }
  73
  74 static HRESULT get_protocol_cf(LPCWSTR schema, DWORD schema_len, CLSID *pclsid, IClassFactory **ret)
  75 {
  76     WCHAR str_clsid[64];
  77     HKEY hkey = NULL;
  78     DWORD res, type, size;
  79     CLSID clsid;
  80     LPWSTR wszKey;
  81     HRESULT hres;
  82
  83     static const WCHAR wszProtocolsKey[] =
  84         {'P','R','O','T','O','C','O','L','S','\\','H','a','n','d','l','e','r','\\'};
  85     static const WCHAR wszCLSID[] = {'C','L','S','I','D',0};
  86
  87     wszKey = heap_alloc(sizeof(wszProtocolsKey)+(schema_len+1)*sizeof(WCHAR));
  88     memcpy(wszKey, wszProtocolsKey, sizeof(wszProtocolsKey));
  89     memcpy(wszKey + sizeof(wszProtocolsKey)/sizeof(WCHAR), schema, (schema_len+1)*sizeof(WCHAR));
  90
  91     res = RegOpenKeyW(HKEY_CLASSES_ROOT, wszKey, &hkey);
  92     heap_free(wszKey);
  93     if(res != ERROR_SUCCESS) {
  94         TRACE("Could not open protocol handler key\n");
  95         return MK_E_SYNTAX;
  96     }
  97
  98     size = sizeof(str_clsid);
  99     res = RegQueryValueExW(hkey, wszCLSID, NULL, &type, (LPBYTE)str_clsid, &size);
 100     RegCloseKey(hkey);
 101     if(res != ERROR_SUCCESS || type != REG_SZ) {
 102         WARN("Could not get protocol CLSID res=%d\n", res);
 103         return MK_E_SYNTAX;
 104     }
 105
 106     hres = CLSIDFromString(str_clsid, &clsid);
 107     if(FAILED(hres)) {
 108         WARN("CLSIDFromString failed: %08x\n", hres);
 109         return hres;
 110     }
 111
 112     if(pclsid)
 113         *pclsid = clsid;
 114
 115     if(!ret)
 116         return S_OK;
 117
 118     hres = CoGetClassObject(&clsid, CLSCTX_INPROC_SERVER, NULL, &IID_IClassFactory, (void**)ret);
 119     return SUCCEEDED(hres) ? S_OK : MK_E_SYNTAX;
 120 }
 121
 122 HRESULT register_namespace(IClassFactory *cf, REFIID clsid, LPCWSTR protocol, BOOL urlmon_protocol)
 123 {
 124     name_space *new_name_space;
 125
 126     new_name_space = heap_alloc(sizeof(name_space));
 127
 128     if(!urlmon_protocol)
 129         IClassFactory_AddRef(cf);
 130     new_name_space->cf = cf;
 131     new_name_space->clsid = *clsid;
 132     new_name_space->urlmon = urlmon_protocol;
 133     new_name_space->protocol = heap_strdupW(protocol);
 134
 135     EnterCriticalSection(&session_cs);
 136
 137     list_add_head(&name_space_list, &new_name_space->entry);
 138
 139     LeaveCriticalSection(&session_cs);
 140
 141     return S_OK;
 142 }
 143
 144 static HRESULT unregister_namespace(IClassFactory *cf, LPCWSTR protocol)
 145 {
 146     name_space *iter;
 147
 148     EnterCriticalSection(&session_cs);
 149
 150     LIST_FOR_EACH_ENTRY(iter, &name_space_list, name_space, entry) {
 151         if(iter->cf == cf && !strcmpiW(iter->protocol, protocol)) {
 152             list_remove(&iter->entry);
 153
 154             LeaveCriticalSection(&session_cs);
 155
 156             if(!iter->urlmon)
 157                 IClassFactory_Release(iter->cf);
 158             heap_free(iter->protocol);
 159             heap_free(iter);
 160             return S_OK;
 161         }
 162     }
 163
 164     LeaveCriticalSection(&session_cs);
 165     return S_OK;
 166 }
 167
 168 BOOL is_registered_protocol(LPCWSTR url)
 169 {
 170     DWORD schema_len;
 171     WCHAR schema[64];
 172     HRESULT hres;
 173
 174     hres = CoInternetParseUrl(url, PARSE_SCHEMA, 0, schema, sizeof(schema)/sizeof(schema[0]),
 175             &schema_len, 0);
 176     if(FAILED(hres))
 177         return FALSE;
 178
 179     return get_protocol_cf(schema, schema_len, NULL, NULL) == S_OK;
 180 }
 181
 182 IInternetProtocolInfo *get_protocol_info(LPCWSTR url)
 183 {
 184     IInternetProtocolInfo *ret = NULL;
 185     IClassFactory *cf;
 186     name_space *ns;
 187     WCHAR schema[64];
 188     DWORD schema_len;
 189     HRESULT hres;
 190
 191     hres = CoInternetParseUrl(url, PARSE_SCHEMA, 0, schema, sizeof(schema)/sizeof(schema[0]),
 192             &schema_len, 0);
 193     if(FAILED(hres) || !schema_len)
 194         return NULL;
 195
 196     EnterCriticalSection(&session_cs);
 197
 198     ns = find_name_space(schema);
 199     if(ns && !ns->urlmon) {
 200         hres = IClassFactory_QueryInterface(ns->cf, &IID_IInternetProtocolInfo, (void**)&ret);
 201         if(FAILED(hres))
 202             hres = IClassFactory_CreateInstance(ns->cf, NULL, &IID_IInternetProtocolInfo, (void**)&ret);
 203     }
 204
 205     LeaveCriticalSection(&session_cs);
 206
 207     if(ns && SUCCEEDED(hres))
 208         return ret;
 209
 210     hres = get_protocol_cf(schema, schema_len, NULL, &cf);
 211     if(FAILED(hres))
 212         return NULL;
 213
 214     hres = IClassFactory_QueryInterface(cf, &IID_IInternetProtocolInfo, (void**)&ret);
 215     if(FAILED(hres))
 216         IClassFactory_CreateInstance(cf, NULL, &IID_IInternetProtocolInfo, (void**)&ret);
 217     IClassFactory_Release(cf);
 218
 219     return ret;
 220 }
 221
 222 HRESULT get_protocol_handler(IUri *uri, CLSID *clsid, BOOL *urlmon_protocol, IClassFactory **ret)
 223 {
 224     name_space *ns;
 225     BSTR scheme;
 226     HRESULT hres;
 227
 228     *ret = NULL;
 229
 230     /* FIXME: Avoid GetSchemeName call for known schemes */
 231     hres = IUri_GetSchemeName(uri, &scheme);
 232     if(FAILED(hres))
 233         return hres;
 234
 235     EnterCriticalSection(&session_cs);
 236
 237     ns = find_name_space(scheme);
 238     if(ns) {
 239         *ret = ns->cf;
 240         IClassFactory_AddRef(*ret);
 241         if(clsid)
 242             *clsid = ns->clsid;
 243         if(urlmon_protocol)
 244             *urlmon_protocol = ns->urlmon;
 245     }
 246
 247     LeaveCriticalSection(&session_cs);
 248
 249     if(*ret) {
 250         hres = S_OK;
 251     }else {
 252         if(urlmon_protocol)
 253             *urlmon_protocol = FALSE;
 254         hres = get_protocol_cf(scheme, SysStringLen(scheme), clsid, ret);
 255     }
 256
 257     SysFreeString(scheme);
 258     return hres;
 259 }
 260
 261 IInternetProtocol *get_mime_filter(LPCWSTR mime)
 262 {
 263     static const WCHAR filtersW[] = {'P','r','o','t','o','c','o','l','s',
 264         '\\','F','i','l','t','e','r',0 };
 265     static const WCHAR CLSIDW[] = {'C','L','S','I','D',0};
 266
 267     IClassFactory *cf = NULL;
 268     IInternetProtocol *ret;
 269     mime_filter *iter;
 270     HKEY hlist, hfilter;
 271     WCHAR clsidw[64];
 272     CLSID clsid;
 273     DWORD res, type, size;
 274     HRESULT hres;
 275
 276     EnterCriticalSection(&session_cs);
 277
 278     LIST_FOR_EACH_ENTRY(iter, &mime_filter_list, mime_filter, entry) {
 279         if(!strcmpW(iter->mime, mime)) {
 280             cf = iter->cf;
 281             break;
 282         }
 283     }
 284
 285     LeaveCriticalSection(&session_cs);
 286
 287     if(cf) {
 288         hres = IClassFactory_CreateInstance(cf, NULL, &IID_IInternetProtocol, (void**)&ret);
 289         if(FAILED(hres)) {
 290             WARN("CreateInstance failed: %08x\n", hres);
 291             return NULL;
 292         }
 293
 294         return ret;
 295     }
 296
 297     res = RegOpenKeyW(HKEY_CLASSES_ROOT, filtersW, &hlist);
 298     if(res != ERROR_SUCCESS) {
 299         TRACE("Could not open MIME filters key\n");
 300         return NULL;
 301     }
 302
 303     res = RegOpenKeyW(hlist, mime, &hfilter);
 304     CloseHandle(hlist);
 305     if(res != ERROR_SUCCESS)
 306         return NULL;
 307
 308     size = sizeof(clsidw);
 309     res = RegQueryValueExW(hfilter, CLSIDW, NULL, &type, (LPBYTE)clsidw, &size);
 310     CloseHandle(hfilter);
 311     if(res!=ERROR_SUCCESS || type!=REG_SZ) {
 312         WARN("Could not get filter CLSID for %s\n", debugstr_w(mime));
 313         return NULL;
 314     }
 315
 316     hres = CLSIDFromString(clsidw, &clsid);
 317     if(FAILED(hres)) {
 318         WARN("CLSIDFromString failed for %s (%x)\n", debugstr_w(mime), hres);
 319         return NULL;
 320     }
 321
 322     hres = CoCreateInstance(&clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IInternetProtocol, (void**)&ret);
 323     if(FAILED(hres)) {
 324         WARN("CoCreateInstance failed: %08x\n", hres);
 325         return NULL;
 326     }
 327
 328     return ret;
 329 }
 330
 331 static HRESULT WINAPI InternetSession_QueryInterface(IInternetSession *iface,
 332         REFIID riid, void **ppv)
 333 {
 334     TRACE("(%s %p)\n", debugstr_guid(riid), ppv);
 335
 336     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IInternetSession, riid)) {
 337         *ppv = iface;
 338         IInternetSession_AddRef(iface);
 339         return S_OK;
 340     }
 341
 342     *ppv = NULL;
 343     return E_NOINTERFACE;
 344 }
 345
 346 static ULONG WINAPI InternetSession_AddRef(IInternetSession *iface)
 347 {
 348     TRACE("()\n");
 349     URLMON_LockModule();
 350     return 2;
 351 }
 352
 353 static ULONG WINAPI InternetSession_Release(IInternetSession *iface)
 354 {
 355     TRACE("()\n");
 356     URLMON_UnlockModule();
 357     return 1;
 358 }
 359
 360 static HRESULT WINAPI InternetSession_RegisterNameSpace(IInternetSession *iface,
 361         IClassFactory *pCF, REFCLSID rclsid, LPCWSTR pwzProtocol, ULONG cPatterns,
 362         const LPCWSTR *ppwzPatterns, DWORD dwReserved)
 363 {
 364     TRACE("(%p %s %s %d %p %d)\n", pCF, debugstr_guid(rclsid), debugstr_w(pwzProtocol),
 365           cPatterns, ppwzPatterns, dwReserved);
 366
 367     if(cPatterns || ppwzPatterns)
 368         FIXME("patterns not supported\n");
 369     if(dwReserved)
 370         WARN("dwReserved = %d\n", dwReserved);
 371
 372     if(!pCF || !pwzProtocol)
 373         return E_INVALIDARG;
 374
 375     return register_namespace(pCF, rclsid, pwzProtocol, FALSE);
 376 }
 377
 378 static HRESULT WINAPI InternetSession_UnregisterNameSpace(IInternetSession *iface,
 379         IClassFactory *pCF, LPCWSTR pszProtocol)
 380 {
 381     TRACE("(%p %s)\n", pCF, debugstr_w(pszProtocol));
 382
 383     if(!pCF || !pszProtocol)
 384         return E_INVALIDARG;
 385
 386     return unregister_namespace(pCF, pszProtocol);
 387 }
 388
 389 static HRESULT WINAPI InternetSession_RegisterMimeFilter(IInternetSession *iface,
 390         IClassFactory *pCF, REFCLSID rclsid, LPCWSTR pwzType)
 391 {
 392     mime_filter *filter;
 393
 394     TRACE("(%p %s %s)\n", pCF, debugstr_guid(rclsid), debugstr_w(pwzType));
 395
 396     filter = heap_alloc(sizeof(mime_filter));
 397
 398     IClassFactory_AddRef(pCF);
 399     filter->cf = pCF;
 400     filter->clsid = *rclsid;
 401     filter->mime = heap_strdupW(pwzType);
 402
 403     EnterCriticalSection(&session_cs);
 404
 405     list_add_head(&mime_filter_list, &filter->entry);
 406
 407     LeaveCriticalSection(&session_cs);
 408
 409     return S_OK;
 410 }
 411
 412 static HRESULT WINAPI InternetSession_UnregisterMimeFilter(IInternetSession *iface,
 413         IClassFactory *pCF, LPCWSTR pwzType)
 414 {
 415     mime_filter *iter;
 416
 417     TRACE("(%p %s)\n", pCF, debugstr_w(pwzType));
 418
 419     EnterCriticalSection(&session_cs);
 420
 421     LIST_FOR_EACH_ENTRY(iter, &mime_filter_list, mime_filter, entry) {
 422         if(iter->cf == pCF && !strcmpW(iter->mime, pwzType)) {
 423             list_remove(&iter->entry);
 424
 425             LeaveCriticalSection(&session_cs);
 426
 427             IClassFactory_Release(iter->cf);
 428             heap_free(iter->mime);
 429             heap_free(iter);
 430             return S_OK;
 431         }
 432     }
 433
 434     LeaveCriticalSection(&session_cs);
 435     return S_OK;
 436 }
 437
 438 static HRESULT WINAPI InternetSession_CreateBinding(IInternetSession *iface,
 439         LPBC pBC, LPCWSTR szUrl, IUnknown *pUnkOuter, IUnknown **ppUnk,
 440         IInternetProtocol **ppOInetProt, DWORD dwOption)
 441 {
 442     BindProtocol *protocol;
 443     HRESULT hres;
 444
 445     TRACE("(%p %s %p %p %p %08x)\n", pBC, debugstr_w(szUrl), pUnkOuter, ppUnk,
 446             ppOInetProt, dwOption);
 447
 448     if(pBC || pUnkOuter || ppUnk || dwOption)
 449         FIXME("Unsupported arguments\n");
 450
 451     hres = create_binding_protocol(FALSE, &protocol);
 452     if(FAILED(hres))
 453         return hres;
 454
 455     *ppOInetProt = (IInternetProtocol*)&protocol->IInternetProtocolEx_iface;
 456     return S_OK;
 457 }
 458
 459 static HRESULT WINAPI InternetSession_SetSessionOption(IInternetSession *iface,
 460         DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength, DWORD dwReserved)
 461 {
 462     FIXME("(%08x %p %d %d)\n", dwOption, pBuffer, dwBufferLength, dwReserved);
 463     return E_NOTIMPL;
 464 }
 465
 466 static const IInternetSessionVtbl InternetSessionVtbl = {
 467     InternetSession_QueryInterface,
 468     InternetSession_AddRef,
 469     InternetSession_Release,
 470     InternetSession_RegisterNameSpace,
 471     InternetSession_UnregisterNameSpace,
 472     InternetSession_RegisterMimeFilter,
 473     InternetSession_UnregisterMimeFilter,
 474     InternetSession_CreateBinding,
 475     InternetSession_SetSessionOption
 476 };
 477
 478 static IInternetSession InternetSession = { &InternetSessionVtbl };
 479
 480 /***********************************************************************
 481  *           CoInternetGetSession (URLMON.@)
 482  *
 483  * Create a new internet session and return an IInternetSession interface
 484  * representing it.
 485  *
 486  * PARAMS
 487  *    dwSessionMode      [I] Mode for the internet session
 488  *    ppIInternetSession [O] Destination for creates IInternetSession object
 489  *    dwReserved         [I] Reserved, must be 0.
 490  *
 491  * RETURNS
 492  *    Success: S_OK. ppIInternetSession contains the IInternetSession interface.
 493  *    Failure: E_INVALIDARG, if any argument is invalid, or
 494  *             E_OUTOFMEMORY if memory allocation fails.
 495  */
 496 HRESULT WINAPI CoInternetGetSession(DWORD dwSessionMode, IInternetSession **ppIInternetSession,
 497         DWORD dwReserved)
 498 {
 499     TRACE("(%d %p %d)\n", dwSessionMode, ppIInternetSession, dwReserved);
 500
 501     if(dwSessionMode)
 502         ERR("dwSessionMode=%d\n", dwSessionMode);
 503     if(dwReserved)
 504         ERR("dwReserved=%d\n", dwReserved);
 505
 506     IInternetSession_AddRef(&InternetSession);
 507     *ppIInternetSession = &InternetSession;
 508     return S_OK;
 509 }
 510
 511 /**************************************************************************
 512  *                 UrlMkGetSessionOption (URLMON.@)
 513  */
 514 static BOOL get_url_encoding(HKEY root, DWORD *encoding)
 515 {
 516     DWORD size = sizeof(DWORD), res, type;
 517     HKEY hkey;
 518
 519     static const WCHAR wszUrlEncoding[] = {'U','r','l','E','n','c','o','d','i','n','g',0};
 520
 521     res = RegOpenKeyW(root, internet_settings_keyW, &hkey);
 522     if(res != ERROR_SUCCESS)
 523         return FALSE;
 524
 525     res = RegQueryValueExW(hkey, wszUrlEncoding, NULL, &type, (LPBYTE)encoding, &size);
 526     RegCloseKey(hkey);
 527
 528     return res == ERROR_SUCCESS;
 529 }
 530
 531 static LPWSTR user_agent;
 532
 533 static void ensure_useragent(void)
 534 {
 535     OSVERSIONINFOW info = {sizeof(info)};
 536     const WCHAR *os_type, *is_nt;
 537     WCHAR buf[512];
 538     BOOL is_wow;
 539
 540     static const WCHAR formatW[] =
 541         {'M','o','z','i','l','l','a','/','4','.','0',
 542          ' ','(','c','o','m','p','a','t','i','b','l','e',';',
 543          ' ','M','S','I','E',' ','8','.','0',';',
 544          ' ','W','i','n','d','o','w','s',' ','%','s','%','d','.','%','d',';',
 545          ' ','%','s',';',' ','T','r','i','d','e','n','t','/','5','.','0',')',0};
 546     static const WCHAR ntW[] = {'N','T',' ',0};
 547     static const WCHAR win32W[] = {'W','i','n','3','2',0};
 548     static const WCHAR win64W[] = {'W','i','n','6','4',0};
 549     static const WCHAR wow64W[] = {'W','O','W','6','4',0};
 550     static const WCHAR emptyW[] = {0};
 551
 552     if(user_agent)
 553         return;
 554
 555     GetVersionExW(&info);
 556     is_nt = info.dwPlatformId == VER_PLATFORM_WIN32_NT ? ntW : emptyW;
 557
 558     if(sizeof(void*) == 8)
 559         os_type = win64W;
 560     else if(IsWow64Process(GetCurrentProcess(), &is_wow) && is_wow)
 561         os_type = wow64W;
 562     else
 563         os_type = win32W;
 564
 565     sprintfW(buf, formatW, is_nt, info.dwMajorVersion, info.dwMinorVersion, os_type);
 566     user_agent = heap_strdupW(buf);
 567 }
 568
 569 LPWSTR get_useragent(void)
 570 {
 571     LPWSTR ret;
 572
 573     ensure_useragent();
 574
 575     EnterCriticalSection(&session_cs);
 576     ret = heap_strdupW(user_agent);
 577     LeaveCriticalSection(&session_cs);
 578
 579     return ret;
 580 }
 581
 582 HRESULT WINAPI UrlMkGetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 583                                      DWORD* pdwBufferLength, DWORD dwReserved)
 584 {
 585     TRACE("(%x, %p, %d, %p)\n", dwOption, pBuffer, dwBufferLength, pdwBufferLength);
 586
 587     if(dwReserved)
 588         WARN("dwReserved = %d\n", dwReserved);
 589
 590     switch(dwOption) {
 591     case URLMON_OPTION_USERAGENT: {
 592         HRESULT hres = E_OUTOFMEMORY;
 593         DWORD size;
 594
 595         if(!pdwBufferLength)
 596             return E_INVALIDARG;
 597
 598         EnterCriticalSection(&session_cs);
 599
 600         ensure_useragent();
 601         if(user_agent) {
 602             size = WideCharToMultiByte(CP_ACP, 0, user_agent, -1, NULL, 0, NULL, NULL);
 603             *pdwBufferLength = size;
 604             if(size <= dwBufferLength) {
 605                 if(pBuffer)
 606                     WideCharToMultiByte(CP_ACP, 0, user_agent, -1, pBuffer, size, NULL, NULL);
 607                 else
 608                     hres = E_INVALIDARG;
 609             }
 610         }
 611
 612         LeaveCriticalSection(&session_cs);
 613
 614         /* Tests prove that we have to return E_OUTOFMEMORY on success. */
 615         return hres;
 616     }
 617     case URLMON_OPTION_URL_ENCODING: {
 618         DWORD encoding = 0;
 619
 620         if(!pBuffer || dwBufferLength < sizeof(DWORD) || !pdwBufferLength)
 621             return E_INVALIDARG;
 622
 623         if(!get_url_encoding(HKEY_CURRENT_USER, &encoding))
 624             get_url_encoding(HKEY_LOCAL_MACHINE, &encoding);
 625
 626         *pdwBufferLength = sizeof(DWORD);
 627         *(DWORD*)pBuffer = encoding ? URL_ENCODING_DISABLE_UTF8 : URL_ENCODING_ENABLE_UTF8;
 628         return S_OK;
 629     }
 630     default:
 631         FIXME("unsupported option %x\n", dwOption);
 632     }
 633
 634     return E_INVALIDARG;
 635 }
 636
 637 /**************************************************************************
 638  *                 UrlMkSetSessionOption (URLMON.@)
 639  */
 640 HRESULT WINAPI UrlMkSetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 641         DWORD Reserved)
 642 {
 643     TRACE("(%x %p %x)\n", dwOption, pBuffer, dwBufferLength);
 644
 645     switch(dwOption) {
 646     case URLMON_OPTION_USERAGENT: {
 647         LPWSTR new_user_agent;
 648         char *buf = pBuffer;
 649         DWORD len, size;
 650
 651         if(!pBuffer || !dwBufferLength)
 652             return E_INVALIDARG;
 653
 654         for(len=0; len<dwBufferLength && buf[len]; len++);
 655
 656         TRACE("Setting user agent %s\n", debugstr_an(buf, len));
 657
 658         size = MultiByteToWideChar(CP_ACP, 0, buf, len, NULL, 0);
 659         new_user_agent = heap_alloc((size+1)*sizeof(WCHAR));
 660         if(!new_user_agent)
 661             return E_OUTOFMEMORY;
 662         MultiByteToWideChar(CP_ACP, 0, buf, len, new_user_agent, size);
 663         new_user_agent[size] = 0;
 664
 665         EnterCriticalSection(&session_cs);
 666
 667         heap_free(user_agent);
 668         user_agent = new_user_agent;
 669
 670         LeaveCriticalSection(&session_cs);
 671         break;
 672     }
 673     default:
 674         FIXME("Unknown option %x\n", dwOption);
 675         return E_INVALIDARG;
 676     }
 677
 678     return S_OK;
 679 }
 680
 681 /**************************************************************************
 682  *                 ObtainUserAgentString (URLMON.@)
 683  */
 684 HRESULT WINAPI ObtainUserAgentString(DWORD dwOption, LPSTR pcszUAOut, DWORD *cbSize)
 685 {
 686     DWORD size;
 687     HRESULT hres = E_FAIL;
 688
 689     TRACE("(%d %p %p)\n", dwOption, pcszUAOut, cbSize);
 690
 691     if(!pcszUAOut || !cbSize)
 692         return E_INVALIDARG;
 693
 694     EnterCriticalSection(&session_cs);
 695
 696     ensure_useragent();
 697     if(user_agent) {
 698         size = WideCharToMultiByte(CP_ACP, 0, user_agent, -1, NULL, 0, NULL, NULL);
 699
 700         if(size <= *cbSize) {
 701             WideCharToMultiByte(CP_ACP, 0, user_agent, -1, pcszUAOut, *cbSize, NULL, NULL);
 702             hres = S_OK;
 703         }else {
 704             hres = E_OUTOFMEMORY;
 705         }
 706
 707         *cbSize = size;
 708     }
 709
 710     LeaveCriticalSection(&session_cs);
 711     return hres;
 712 }
 713
 714 void free_session(void)
 715 {
 716     name_space *ns_iter, *ns_last;
 717     mime_filter *mf_iter, *mf_last;
 718
 719     LIST_FOR_EACH_ENTRY_SAFE(ns_iter, ns_last, &name_space_list, name_space, entry) {
 720             if(!ns_iter->urlmon)
 721                 IClassFactory_Release(ns_iter->cf);
 722             heap_free(ns_iter->protocol);
 723             heap_free(ns_iter);
 724     }
 725
 726     LIST_FOR_EACH_ENTRY_SAFE(mf_iter, mf_last, &mime_filter_list, mime_filter, entry) {
 727             IClassFactory_Release(mf_iter->cf);
 728             heap_free(mf_iter->mime);
 729             heap_free(mf_iter);
 730     }
 731
 732     heap_free(user_agent);
 733 }