dll/win32/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
  21 typedef struct {
  22     LPWSTR protocol;
  23     IClassFactory *cf;
  24     CLSID clsid;
  25     BOOL urlmon;
  26
  27     struct list entry;
  28 } name_space;
  29
  30 typedef struct {
  31     IClassFactory *cf;
  32     CLSID clsid;
  33     LPWSTR mime;
  34
  35     struct list entry;
  36 } mime_filter;
  37
  38 static struct list name_space_list = LIST_INIT(name_space_list);
  39 static struct list mime_filter_list = LIST_INIT(mime_filter_list);
  40
  41 static CRITICAL_SECTION session_cs;
  42 static CRITICAL_SECTION_DEBUG session_cs_dbg =
  43 {
  44     0, 0, &session_cs,
  45     { &session_cs_dbg.ProcessLocksList, &session_cs_dbg.ProcessLocksList },
  46       0, 0, { (DWORD_PTR)(__FILE__ ": session") }
  47 };
  48 static CRITICAL_SECTION session_cs = { &session_cs_dbg, -1, 0, 0, 0, 0 };
  49
  50 static const WCHAR internet_settings_keyW[] =
  51     {'S','O','F','T','W','A','R','E',
  52      '\\','M','i','c','r','o','s','o','f','t',
  53      '\\','W','i','n','d','o','w','s',
  54      '\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n',
  55      '\\','I','n','t','e','r','n','e','t',' ','S','e','t','t','i','n','g','s',0};
  56
  57 static name_space *find_name_space(LPCWSTR protocol)
  58 {
  59     name_space *iter;
  60
  61     LIST_FOR_EACH_ENTRY(iter, &name_space_list, name_space, entry) {
  62         if(!strcmpiW(iter->protocol, protocol))
  63             return iter;
  64     }
  65
  66     return NULL;
  67 }
  68
  69 static HRESULT get_protocol_cf(LPCWSTR schema, DWORD schema_len, CLSID *pclsid, IClassFactory **ret)
  70 {
  71     WCHAR str_clsid[64];
  72     HKEY hkey = NULL;
  73     DWORD res, type, size;
  74     CLSID clsid;
  75     LPWSTR wszKey;
  76     HRESULT hres;
  77
  78     static const WCHAR wszProtocolsKey[] =
  79         {'P','R','O','T','O','C','O','L','S','\\','H','a','n','d','l','e','r','\\'};
  80     static const WCHAR wszCLSID[] = {'C','L','S','I','D',0};
  81
  82     wszKey = heap_alloc(sizeof(wszProtocolsKey)+(schema_len+1)*sizeof(WCHAR));
  83     memcpy(wszKey, wszProtocolsKey, sizeof(wszProtocolsKey));
  84     memcpy(wszKey + sizeof(wszProtocolsKey)/sizeof(WCHAR), schema, (schema_len+1)*sizeof(WCHAR));
  85
  86     res = RegOpenKeyW(HKEY_CLASSES_ROOT, wszKey, &hkey);
  87     heap_free(wszKey);
  88     if(res != ERROR_SUCCESS) {
  89         TRACE("Could not open protocol handler key\n");
  90         return MK_E_SYNTAX;
  91     }
  92
  93     size = sizeof(str_clsid);
  94     res = RegQueryValueExW(hkey, wszCLSID, NULL, &type, (LPBYTE)str_clsid, &size);
  95     RegCloseKey(hkey);
  96     if(res != ERROR_SUCCESS || type != REG_SZ) {
  97         WARN("Could not get protocol CLSID res=%d\n", res);
  98         return MK_E_SYNTAX;
  99     }
 100
 101     hres = CLSIDFromString(str_clsid, &clsid);
 102     if(FAILED(hres)) {
 103         WARN("CLSIDFromString failed: %08x\n", hres);
 104         return hres;
 105     }
 106
 107     if(pclsid)
 108         *pclsid = clsid;
 109
 110     if(!ret)
 111         return S_OK;
 112
 113     hres = CoGetClassObject(&clsid, CLSCTX_INPROC_SERVER, NULL, &IID_IClassFactory, (void**)ret);
 114     return SUCCEEDED(hres) ? S_OK : MK_E_SYNTAX;
 115 }
 116
 117 HRESULT register_namespace(IClassFactory *cf, REFIID clsid, LPCWSTR protocol, BOOL urlmon_protocol)
 118 {
 119     name_space *new_name_space;
 120
 121     new_name_space = heap_alloc(sizeof(name_space));
 122
 123     if(!urlmon_protocol)
 124         IClassFactory_AddRef(cf);
 125     new_name_space->cf = cf;
 126     new_name_space->clsid = *clsid;
 127     new_name_space->urlmon = urlmon_protocol;
 128     new_name_space->protocol = heap_strdupW(protocol);
 129
 130     EnterCriticalSection(&session_cs);
 131
 132     list_add_head(&name_space_list, &new_name_space->entry);
 133
 134     LeaveCriticalSection(&session_cs);
 135
 136     return S_OK;
 137 }
 138
 139 static HRESULT unregister_namespace(IClassFactory *cf, LPCWSTR protocol)
 140 {
 141     name_space *iter;
 142
 143     EnterCriticalSection(&session_cs);
 144
 145     LIST_FOR_EACH_ENTRY(iter, &name_space_list, name_space, entry) {
 146         if(iter->cf == cf && !strcmpiW(iter->protocol, protocol)) {
 147             list_remove(&iter->entry);
 148
 149             LeaveCriticalSection(&session_cs);
 150
 151             if(!iter->urlmon)
 152                 IClassFactory_Release(iter->cf);
 153             heap_free(iter->protocol);
 154             heap_free(iter);
 155             return S_OK;
 156         }
 157     }
 158
 159     LeaveCriticalSection(&session_cs);
 160     return S_OK;
 161 }
 162
 163 BOOL is_registered_protocol(LPCWSTR url)
 164 {
 165     DWORD schema_len;
 166     WCHAR schema[64];
 167     HRESULT hres;
 168
 169     hres = CoInternetParseUrl(url, PARSE_SCHEMA, 0, schema, sizeof(schema)/sizeof(schema[0]),
 170             &schema_len, 0);
 171     if(FAILED(hres))
 172         return FALSE;
 173
 174     return get_protocol_cf(schema, schema_len, NULL, NULL) == S_OK;
 175 }
 176
 177 IInternetProtocolInfo *get_protocol_info(LPCWSTR url)
 178 {
 179     IInternetProtocolInfo *ret = NULL;
 180     IClassFactory *cf;
 181     name_space *ns;
 182     WCHAR schema[64];
 183     DWORD schema_len;
 184     HRESULT hres;
 185
 186     hres = CoInternetParseUrl(url, PARSE_SCHEMA, 0, schema, sizeof(schema)/sizeof(schema[0]),
 187             &schema_len, 0);
 188     if(FAILED(hres) || !schema_len)
 189         return NULL;
 190
 191     EnterCriticalSection(&session_cs);
 192
 193     ns = find_name_space(schema);
 194     if(ns && !ns->urlmon) {
 195         hres = IClassFactory_QueryInterface(ns->cf, &IID_IInternetProtocolInfo, (void**)&ret);
 196         if(FAILED(hres))
 197             hres = IClassFactory_CreateInstance(ns->cf, NULL, &IID_IInternetProtocolInfo, (void**)&ret);
 198     }
 199
 200     LeaveCriticalSection(&session_cs);
 201
 202     if(ns && SUCCEEDED(hres))
 203         return ret;
 204
 205     hres = get_protocol_cf(schema, schema_len, NULL, &cf);
 206     if(FAILED(hres))
 207         return NULL;
 208
 209     hres = IClassFactory_QueryInterface(cf, &IID_IInternetProtocolInfo, (void**)&ret);
 210     if(FAILED(hres))
 211         IClassFactory_CreateInstance(cf, NULL, &IID_IInternetProtocolInfo, (void**)&ret);
 212     IClassFactory_Release(cf);
 213
 214     return ret;
 215 }
 216
 217 HRESULT get_protocol_handler(IUri *uri, CLSID *clsid, BOOL *urlmon_protocol, IClassFactory **ret)
 218 {
 219     name_space *ns;
 220     BSTR scheme;
 221     HRESULT hres;
 222
 223     *ret = NULL;
 224
 225     /* FIXME: Avoid GetSchemeName call for known schemes */
 226     hres = IUri_GetSchemeName(uri, &scheme);
 227     if(FAILED(hres))
 228         return hres;
 229
 230     EnterCriticalSection(&session_cs);
 231
 232     ns = find_name_space(scheme);
 233     if(ns) {
 234         *ret = ns->cf;
 235         IClassFactory_AddRef(*ret);
 236         if(clsid)
 237             *clsid = ns->clsid;
 238         if(urlmon_protocol)
 239             *urlmon_protocol = ns->urlmon;
 240     }
 241
 242     LeaveCriticalSection(&session_cs);
 243
 244     if(*ret) {
 245         hres = S_OK;
 246     }else {
 247         if(urlmon_protocol)
 248             *urlmon_protocol = FALSE;
 249         hres = get_protocol_cf(scheme, SysStringLen(scheme), clsid, ret);
 250     }
 251
 252     SysFreeString(scheme);
 253     return hres;
 254 }
 255
 256 IInternetProtocol *get_mime_filter(LPCWSTR mime)
 257 {
 258     static const WCHAR filtersW[] = {'P','r','o','t','o','c','o','l','s',
 259         '\\','F','i','l','t','e','r',0 };
 260     static const WCHAR CLSIDW[] = {'C','L','S','I','D',0};
 261
 262     IClassFactory *cf = NULL;
 263     IInternetProtocol *ret;
 264     mime_filter *iter;
 265     HKEY hlist, hfilter;
 266     WCHAR clsidw[64];
 267     CLSID clsid;
 268     DWORD res, type, size;
 269     HRESULT hres;
 270
 271     EnterCriticalSection(&session_cs);
 272
 273     LIST_FOR_EACH_ENTRY(iter, &mime_filter_list, mime_filter, entry) {
 274         if(!strcmpW(iter->mime, mime)) {
 275             cf = iter->cf;
 276             break;
 277         }
 278     }
 279
 280     LeaveCriticalSection(&session_cs);
 281
 282     if(cf) {
 283         hres = IClassFactory_CreateInstance(cf, NULL, &IID_IInternetProtocol, (void**)&ret);
 284         if(FAILED(hres)) {
 285             WARN("CreateInstance failed: %08x\n", hres);
 286             return NULL;
 287         }
 288
 289         return ret;
 290     }
 291
 292     res = RegOpenKeyW(HKEY_CLASSES_ROOT, filtersW, &hlist);
 293     if(res != ERROR_SUCCESS) {
 294         TRACE("Could not open MIME filters key\n");
 295         return NULL;
 296     }
 297
 298     res = RegOpenKeyW(hlist, mime, &hfilter);
 299     CloseHandle(hlist);
 300     if(res != ERROR_SUCCESS)
 301         return NULL;
 302
 303     size = sizeof(clsidw);
 304     res = RegQueryValueExW(hfilter, CLSIDW, NULL, &type, (LPBYTE)clsidw, &size);
 305     CloseHandle(hfilter);
 306     if(res!=ERROR_SUCCESS || type!=REG_SZ) {
 307         WARN("Could not get filter CLSID for %s\n", debugstr_w(mime));
 308         return NULL;
 309     }
 310
 311     hres = CLSIDFromString(clsidw, &clsid);
 312     if(FAILED(hres)) {
 313         WARN("CLSIDFromString failed for %s (%x)\n", debugstr_w(mime), hres);
 314         return NULL;
 315     }
 316
 317     hres = CoCreateInstance(&clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IInternetProtocol, (void**)&ret);
 318     if(FAILED(hres)) {
 319         WARN("CoCreateInstance failed: %08x\n", hres);
 320         return NULL;
 321     }
 322
 323     return ret;
 324 }
 325
 326 static HRESULT WINAPI InternetSession_QueryInterface(IInternetSession *iface,
 327         REFIID riid, void **ppv)
 328 {
 329     TRACE("(%s %p)\n", debugstr_guid(riid), ppv);
 330
 331     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IInternetSession, riid)) {
 332         *ppv = iface;
 333         IInternetSession_AddRef(iface);
 334         return S_OK;
 335     }
 336
 337     *ppv = NULL;
 338     return E_NOINTERFACE;
 339 }
 340
 341 static ULONG WINAPI InternetSession_AddRef(IInternetSession *iface)
 342 {
 343     TRACE("()\n");
 344     URLMON_LockModule();
 345     return 2;
 346 }
 347
 348 static ULONG WINAPI InternetSession_Release(IInternetSession *iface)
 349 {
 350     TRACE("()\n");
 351     URLMON_UnlockModule();
 352     return 1;
 353 }
 354
 355 static HRESULT WINAPI InternetSession_RegisterNameSpace(IInternetSession *iface,
 356         IClassFactory *pCF, REFCLSID rclsid, LPCWSTR pwzProtocol, ULONG cPatterns,
 357         const LPCWSTR *ppwzPatterns, DWORD dwReserved)
 358 {
 359     TRACE("(%p %s %s %d %p %d)\n", pCF, debugstr_guid(rclsid), debugstr_w(pwzProtocol),
 360           cPatterns, ppwzPatterns, dwReserved);
 361
 362     if(cPatterns || ppwzPatterns)
 363         FIXME("patterns not supported\n");
 364     if(dwReserved)
 365         WARN("dwReserved = %d\n", dwReserved);
 366
 367     if(!pCF || !pwzProtocol)
 368         return E_INVALIDARG;
 369
 370     return register_namespace(pCF, rclsid, pwzProtocol, FALSE);
 371 }
 372
 373 static HRESULT WINAPI InternetSession_UnregisterNameSpace(IInternetSession *iface,
 374         IClassFactory *pCF, LPCWSTR pszProtocol)
 375 {
 376     TRACE("(%p %s)\n", pCF, debugstr_w(pszProtocol));
 377
 378     if(!pCF || !pszProtocol)
 379         return E_INVALIDARG;
 380
 381     return unregister_namespace(pCF, pszProtocol);
 382 }
 383
 384 static HRESULT WINAPI InternetSession_RegisterMimeFilter(IInternetSession *iface,
 385         IClassFactory *pCF, REFCLSID rclsid, LPCWSTR pwzType)
 386 {
 387     mime_filter *filter;
 388
 389     TRACE("(%p %s %s)\n", pCF, debugstr_guid(rclsid), debugstr_w(pwzType));
 390
 391     filter = heap_alloc(sizeof(mime_filter));
 392
 393     IClassFactory_AddRef(pCF);
 394     filter->cf = pCF;
 395     filter->clsid = *rclsid;
 396     filter->mime = heap_strdupW(pwzType);
 397
 398     EnterCriticalSection(&session_cs);
 399
 400     list_add_head(&mime_filter_list, &filter->entry);
 401
 402     LeaveCriticalSection(&session_cs);
 403
 404     return S_OK;
 405 }
 406
 407 static HRESULT WINAPI InternetSession_UnregisterMimeFilter(IInternetSession *iface,
 408         IClassFactory *pCF, LPCWSTR pwzType)
 409 {
 410     mime_filter *iter;
 411
 412     TRACE("(%p %s)\n", pCF, debugstr_w(pwzType));
 413
 414     EnterCriticalSection(&session_cs);
 415
 416     LIST_FOR_EACH_ENTRY(iter, &mime_filter_list, mime_filter, entry) {
 417         if(iter->cf == pCF && !strcmpW(iter->mime, pwzType)) {
 418             list_remove(&iter->entry);
 419
 420             LeaveCriticalSection(&session_cs);
 421
 422             IClassFactory_Release(iter->cf);
 423             heap_free(iter->mime);
 424             heap_free(iter);
 425             return S_OK;
 426         }
 427     }
 428
 429     LeaveCriticalSection(&session_cs);
 430     return S_OK;
 431 }
 432
 433 static HRESULT WINAPI InternetSession_CreateBinding(IInternetSession *iface,
 434         LPBC pBC, LPCWSTR szUrl, IUnknown *pUnkOuter, IUnknown **ppUnk,
 435         IInternetProtocol **ppOInetProt, DWORD dwOption)
 436 {
 437     BindProtocol *protocol;
 438     HRESULT hres;
 439
 440     TRACE("(%p %s %p %p %p %08x)\n", pBC, debugstr_w(szUrl), pUnkOuter, ppUnk,
 441             ppOInetProt, dwOption);
 442
 443     if(pBC || pUnkOuter || ppUnk || dwOption)
 444         FIXME("Unsupported arguments\n");
 445
 446     hres = create_binding_protocol(FALSE, &protocol);
 447     if(FAILED(hres))
 448         return hres;
 449
 450     *ppOInetProt = (IInternetProtocol*)&protocol->IInternetProtocolEx_iface;
 451     return S_OK;
 452 }
 453
 454 static HRESULT WINAPI InternetSession_SetSessionOption(IInternetSession *iface,
 455         DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength, DWORD dwReserved)
 456 {
 457     FIXME("(%08x %p %d %d)\n", dwOption, pBuffer, dwBufferLength, dwReserved);
 458     return E_NOTIMPL;
 459 }
 460
 461 static const IInternetSessionVtbl InternetSessionVtbl = {
 462     InternetSession_QueryInterface,
 463     InternetSession_AddRef,
 464     InternetSession_Release,
 465     InternetSession_RegisterNameSpace,
 466     InternetSession_UnregisterNameSpace,
 467     InternetSession_RegisterMimeFilter,
 468     InternetSession_UnregisterMimeFilter,
 469     InternetSession_CreateBinding,
 470     InternetSession_SetSessionOption
 471 };
 472
 473 static IInternetSession InternetSession = { &InternetSessionVtbl };
 474
 475 /***********************************************************************
 476  *           CoInternetGetSession (URLMON.@)
 477  *
 478  * Create a new internet session and return an IInternetSession interface
 479  * representing it.
 480  *
 481  * PARAMS
 482  *    dwSessionMode      [I] Mode for the internet session
 483  *    ppIInternetSession [O] Destination for creates IInternetSession object
 484  *    dwReserved         [I] Reserved, must be 0.
 485  *
 486  * RETURNS
 487  *    Success: S_OK. ppIInternetSession contains the IInternetSession interface.
 488  *    Failure: E_INVALIDARG, if any argument is invalid, or
 489  *             E_OUTOFMEMORY if memory allocation fails.
 490  */
 491 HRESULT WINAPI CoInternetGetSession(DWORD dwSessionMode, IInternetSession **ppIInternetSession,
 492         DWORD dwReserved)
 493 {
 494     TRACE("(%d %p %d)\n", dwSessionMode, ppIInternetSession, dwReserved);
 495
 496     if(dwSessionMode)
 497         ERR("dwSessionMode=%d\n", dwSessionMode);
 498     if(dwReserved)
 499         ERR("dwReserved=%d\n", dwReserved);
 500
 501     IInternetSession_AddRef(&InternetSession);
 502     *ppIInternetSession = &InternetSession;
 503     return S_OK;
 504 }
 505
 506 /**************************************************************************
 507  *                 UrlMkGetSessionOption (URLMON.@)
 508  */
 509 static BOOL get_url_encoding(HKEY root, DWORD *encoding)
 510 {
 511     DWORD size = sizeof(DWORD), res, type;
 512     HKEY hkey;
 513
 514     static const WCHAR wszUrlEncoding[] = {'U','r','l','E','n','c','o','d','i','n','g',0};
 515
 516     res = RegOpenKeyW(root, internet_settings_keyW, &hkey);
 517     if(res != ERROR_SUCCESS)
 518         return FALSE;
 519
 520     res = RegQueryValueExW(hkey, wszUrlEncoding, NULL, &type, (LPBYTE)encoding, &size);
 521     RegCloseKey(hkey);
 522
 523     return res == ERROR_SUCCESS;
 524 }
 525
 526 static LPWSTR user_agent;
 527
 528 static void ensure_useragent(void)
 529 {
 530     OSVERSIONINFOW info = {sizeof(info)};
 531     const WCHAR *os_type, *is_nt;
 532     WCHAR buf[512];
 533     BOOL is_wow;
 534
 535     static const WCHAR formatW[] =
 536         {'M','o','z','i','l','l','a','/','4','.','0',
 537          ' ','(','c','o','m','p','a','t','i','b','l','e',';',
 538          ' ','M','S','I','E',' ','8','.','0',';',
 539          ' ','W','i','n','d','o','w','s',' ','%','s','%','d','.','%','d',';',
 540          ' ','%','s',';',' ','T','r','i','d','e','n','t','/','5','.','0',')',0};
 541     static const WCHAR ntW[] = {'N','T',' ',0};
 542     static const WCHAR win32W[] = {'W','i','n','3','2',0};
 543     static const WCHAR win64W[] = {'W','i','n','6','4',0};
 544     static const WCHAR wow64W[] = {'W','O','W','6','4',0};
 545     static const WCHAR emptyW[] = {0};
 546
 547     if(user_agent)
 548         return;
 549
 550     GetVersionExW(&info);
 551     is_nt = info.dwPlatformId == VER_PLATFORM_WIN32_NT ? ntW : emptyW;
 552
 553     if(sizeof(void*) == 8)
 554         os_type = win64W;
 555     else if(IsWow64Process(GetCurrentProcess(), &is_wow) && is_wow)
 556         os_type = wow64W;
 557     else
 558         os_type = win32W;
 559
 560     sprintfW(buf, formatW, is_nt, info.dwMajorVersion, info.dwMinorVersion, os_type);
 561     user_agent = heap_strdupW(buf);
 562 }
 563
 564 LPWSTR get_useragent(void)
 565 {
 566     LPWSTR ret;
 567
 568     ensure_useragent();
 569
 570     EnterCriticalSection(&session_cs);
 571     ret = heap_strdupW(user_agent);
 572     LeaveCriticalSection(&session_cs);
 573
 574     return ret;
 575 }
 576
 577 HRESULT WINAPI UrlMkGetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 578                                      DWORD* pdwBufferLength, DWORD dwReserved)
 579 {
 580     TRACE("(%x, %p, %d, %p)\n", dwOption, pBuffer, dwBufferLength, pdwBufferLength);
 581
 582     if(dwReserved)
 583         WARN("dwReserved = %d\n", dwReserved);
 584
 585     switch(dwOption) {
 586     case URLMON_OPTION_USERAGENT: {
 587         HRESULT hres = E_OUTOFMEMORY;
 588         DWORD size;
 589
 590         if(!pdwBufferLength)
 591             return E_INVALIDARG;
 592
 593         EnterCriticalSection(&session_cs);
 594
 595         ensure_useragent();
 596         if(user_agent) {
 597             size = WideCharToMultiByte(CP_ACP, 0, user_agent, -1, NULL, 0, NULL, NULL);
 598             *pdwBufferLength = size;
 599             if(size <= dwBufferLength) {
 600                 if(pBuffer)
 601                     WideCharToMultiByte(CP_ACP, 0, user_agent, -1, pBuffer, size, NULL, NULL);
 602                 else
 603                     hres = E_INVALIDARG;
 604             }
 605         }
 606
 607         LeaveCriticalSection(&session_cs);
 608
 609         /* Tests prove that we have to return E_OUTOFMEMORY on success. */
 610         return hres;
 611     }
 612     case URLMON_OPTION_URL_ENCODING: {
 613         DWORD encoding = 0;
 614
 615         if(!pBuffer || dwBufferLength < sizeof(DWORD) || !pdwBufferLength)
 616             return E_INVALIDARG;
 617
 618         if(!get_url_encoding(HKEY_CURRENT_USER, &encoding))
 619             get_url_encoding(HKEY_LOCAL_MACHINE, &encoding);
 620
 621         *pdwBufferLength = sizeof(DWORD);
 622         *(DWORD*)pBuffer = encoding ? URL_ENCODING_DISABLE_UTF8 : URL_ENCODING_ENABLE_UTF8;
 623         return S_OK;
 624     }
 625     default:
 626         FIXME("unsupported option %x\n", dwOption);
 627     }
 628
 629     return E_INVALIDARG;
 630 }
 631
 632 /**************************************************************************
 633  *                 UrlMkSetSessionOption (URLMON.@)
 634  */
 635 HRESULT WINAPI UrlMkSetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 636         DWORD Reserved)
 637 {
 638     TRACE("(%x %p %x)\n", dwOption, pBuffer, dwBufferLength);
 639
 640     switch(dwOption) {
 641     case URLMON_OPTION_USERAGENT: {
 642         LPWSTR new_user_agent;
 643         char *buf = pBuffer;
 644         DWORD len, size;
 645
 646         if(!pBuffer || !dwBufferLength)
 647             return E_INVALIDARG;
 648
 649         for(len=0; len<dwBufferLength && buf[len]; len++);
 650
 651         TRACE("Setting user agent %s\n", debugstr_an(buf, len));
 652
 653         size = MultiByteToWideChar(CP_ACP, 0, buf, len, NULL, 0);
 654         new_user_agent = heap_alloc((size+1)*sizeof(WCHAR));
 655         if(!new_user_agent)
 656             return E_OUTOFMEMORY;
 657         MultiByteToWideChar(CP_ACP, 0, buf, len, new_user_agent, size);
 658         new_user_agent[size] = 0;
 659
 660         EnterCriticalSection(&session_cs);
 661
 662         heap_free(user_agent);
 663         user_agent = new_user_agent;
 664
 665         LeaveCriticalSection(&session_cs);
 666         break;
 667     }
 668     default:
 669         FIXME("Unknown option %x\n", dwOption);
 670         return E_INVALIDARG;
 671     }
 672
 673     return S_OK;
 674 }
 675
 676 /**************************************************************************
 677  *                 ObtainUserAgentString (URLMON.@)
 678  */
 679 HRESULT WINAPI ObtainUserAgentString(DWORD dwOption, LPSTR pcszUAOut, DWORD *cbSize)
 680 {
 681     DWORD size;
 682     HRESULT hres = E_FAIL;
 683
 684     TRACE("(%d %p %p)\n", dwOption, pcszUAOut, cbSize);
 685
 686     if(!pcszUAOut || !cbSize)
 687         return E_INVALIDARG;
 688
 689     EnterCriticalSection(&session_cs);
 690
 691     ensure_useragent();
 692     if(user_agent) {
 693         size = WideCharToMultiByte(CP_ACP, 0, user_agent, -1, NULL, 0, NULL, NULL);
 694
 695         if(size <= *cbSize) {
 696             WideCharToMultiByte(CP_ACP, 0, user_agent, -1, pcszUAOut, *cbSize, NULL, NULL);
 697             hres = S_OK;
 698         }else {
 699             hres = E_OUTOFMEMORY;
 700         }
 701
 702         *cbSize = size;
 703     }
 704
 705     LeaveCriticalSection(&session_cs);
 706     return hres;
 707 }
 708
 709 void free_session(void)
 710 {
 711     name_space *ns_iter, *ns_last;
 712     mime_filter *mf_iter, *mf_last;
 713
 714     LIST_FOR_EACH_ENTRY_SAFE(ns_iter, ns_last, &name_space_list, name_space, entry) {
 715             if(!ns_iter->urlmon)
 716                 IClassFactory_Release(ns_iter->cf);
 717             heap_free(ns_iter->protocol);
 718             heap_free(ns_iter);
 719     }
 720
 721     LIST_FOR_EACH_ENTRY_SAFE(mf_iter, mf_last, &mime_filter_list, mime_filter, entry) {
 722             IClassFactory_Release(mf_iter->cf);
 723             heap_free(mf_iter->mime);
 724             heap_free(mf_iter);
 725     }
 726
 727     heap_free(user_agent);
 728 }