dlls/urlmon/urlmon_main.c

   1 /*
   2  * UrlMon
   3  *
   4  * Copyright (c) 2000 Patrik Stridvall
   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 "urlmon_main.h"
  24
  25 #include "winreg.h"
  26
  27 #define NO_SHLWAPI_REG
  28 #include "shlwapi.h"
  29 #include "advpub.h"
  30 #include "initguid.h"
  31
  32 #include "wine/debug.h"
  33
  34 #include "urlmon.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  37
  38 DEFINE_GUID(CLSID_CUri, 0xDF2FCE13, 0x25EC, 0x45BB, 0x9D,0x4C, 0xCE,0xCD,0x47,0xC2,0x43,0x0C);
  39
  40 LONG URLMON_refCount = 0;
  41
  42 static HMODULE hCabinet = NULL;
  43 static DWORD urlmon_tls = TLS_OUT_OF_INDEXES;
  44
  45 static void init_session(BOOL);
  46
  47 static struct list tls_list = LIST_INIT(tls_list);
  48
  49 static CRITICAL_SECTION tls_cs;
  50 static CRITICAL_SECTION_DEBUG tls_cs_dbg =
  51 {
  52     0, 0, &tls_cs,
  53     { &tls_cs_dbg.ProcessLocksList, &tls_cs_dbg.ProcessLocksList },
  54       0, 0, { (DWORD_PTR)(__FILE__ ": tls") }
  55 };
  56
  57 static CRITICAL_SECTION tls_cs = { &tls_cs_dbg, -1, 0, 0, 0, 0 };
  58
  59 tls_data_t *get_tls_data(void)
  60 {
  61     tls_data_t *data;
  62
  63     if(urlmon_tls == TLS_OUT_OF_INDEXES) {
  64         DWORD tls = TlsAlloc();
  65         if(tls == TLS_OUT_OF_INDEXES)
  66             return NULL;
  67
  68         tls = InterlockedCompareExchange((LONG*)&urlmon_tls, tls, TLS_OUT_OF_INDEXES);
  69         if(tls != urlmon_tls)
  70             TlsFree(tls);
  71     }
  72
  73     data = TlsGetValue(urlmon_tls);
  74     if(!data) {
  75         data = heap_alloc_zero(sizeof(tls_data_t));
  76         if(!data)
  77             return NULL;
  78
  79         EnterCriticalSection(&tls_cs);
  80         list_add_tail(&tls_list, &data->entry);
  81         LeaveCriticalSection(&tls_cs);
  82
  83         TlsSetValue(urlmon_tls, data);
  84     }
  85
  86     return data;
  87 }
  88
  89 static void free_tls_list(void)
  90 {
  91     tls_data_t *data;
  92
  93     if(urlmon_tls == TLS_OUT_OF_INDEXES)
  94         return;
  95
  96     while(!list_empty(&tls_list)) {
  97         data = LIST_ENTRY(list_head(&tls_list), tls_data_t, entry);
  98         list_remove(&data->entry);
  99         heap_free(data);
 100     }
 101
 102     TlsFree(urlmon_tls);
 103 }
 104
 105 static void detach_thread(void)
 106 {
 107     tls_data_t *data;
 108
 109     if(urlmon_tls == TLS_OUT_OF_INDEXES)
 110         return;
 111
 112     data = TlsGetValue(urlmon_tls);
 113     if(!data)
 114         return;
 115
 116     EnterCriticalSection(&tls_cs);
 117     list_remove(&data->entry);
 118     LeaveCriticalSection(&tls_cs);
 119
 120     if(data->notif_hwnd) {
 121         WARN("notif_hwnd not destroyed\n");
 122         DestroyWindow(data->notif_hwnd);
 123     }
 124
 125     heap_free(data);
 126 }
 127
 128 static void process_detach(void)
 129 {
 130     HINTERNET internet_session;
 131
 132     internet_session = get_internet_session(NULL);
 133     if(internet_session)
 134         InternetCloseHandle(internet_session);
 135
 136     if (hCabinet)
 137         FreeLibrary(hCabinet);
 138
 139     init_session(FALSE);
 140     free_session();
 141     free_tls_list();
 142 }
 143
 144 /***********************************************************************
 145  *              DllMain (URLMON.init)
 146  */
 147 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
 148 {
 149     TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, fImpLoad);
 150
 151     URLMON_DllMain( hinstDLL, fdwReason, fImpLoad );
 152
 153     switch(fdwReason) {
 154     case DLL_PROCESS_ATTACH:
 155         init_session(TRUE);
 156         break;
 157
 158     case DLL_PROCESS_DETACH:
 159         process_detach();
 160         DeleteCriticalSection(&tls_cs);
 161         break;
 162
 163     case DLL_THREAD_DETACH:
 164         detach_thread();
 165         break;
 166     }
 167     return TRUE;
 168 }
 169
 170
 171 /***********************************************************************
 172  *              DllInstall (URLMON.@)
 173  */
 174 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
 175 {
 176   FIXME("(%s, %s): stub\n", bInstall?"TRUE":"FALSE",
 177         debugstr_w(cmdline));
 178
 179   return S_OK;
 180 }
 181
 182 /***********************************************************************
 183  *              DllCanUnloadNow (URLMON.@)
 184  */
 185 HRESULT WINAPI DllCanUnloadNow(void)
 186 {
 187     return URLMON_refCount != 0 ? S_FALSE : S_OK;
 188 }
 189
 190
 191
 192 /******************************************************************************
 193  * Urlmon ClassFactory
 194  */
 195 typedef struct {
 196     IClassFactory IClassFactory_iface;
 197
 198     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
 199 } ClassFactory;
 200
 201 static inline ClassFactory *impl_from_IClassFactory(IClassFactory *iface)
 202 {
 203     return CONTAINING_RECORD(iface, ClassFactory, IClassFactory_iface);
 204 }
 205
 206 static HRESULT WINAPI CF_QueryInterface(IClassFactory *iface, REFIID riid, LPVOID *ppv)
 207 {
 208     *ppv = NULL;
 209
 210     if(IsEqualGUID(riid, &IID_IUnknown)) {
 211         TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
 212         *ppv = iface;
 213     }else if(IsEqualGUID(riid, &IID_IClassFactory)) {
 214         TRACE("(%p)->(IID_IClassFactory %p)\n", iface, ppv);
 215         *ppv = iface;
 216     }
 217
 218     if(*ppv) {
 219         IUnknown_AddRef((IUnknown*)*ppv);
 220         return S_OK;
 221     }
 222
 223     WARN("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ppv);
 224     return E_NOINTERFACE;
 225 }
 226
 227 static ULONG WINAPI CF_AddRef(IClassFactory *iface)
 228 {
 229     URLMON_LockModule();
 230     return 2;
 231 }
 232
 233 static ULONG WINAPI CF_Release(IClassFactory *iface)
 234 {
 235     URLMON_UnlockModule();
 236     return 1;
 237 }
 238
 239
 240 static HRESULT WINAPI CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
 241                                         REFIID riid, LPVOID *ppobj)
 242 {
 243     ClassFactory *This = impl_from_IClassFactory(iface);
 244     HRESULT hres;
 245     LPUNKNOWN punk;
 246
 247     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 248
 249     *ppobj = NULL;
 250     if(SUCCEEDED(hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk))) {
 251         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 252         IUnknown_Release(punk);
 253     }
 254     return hres;
 255 }
 256
 257 static HRESULT WINAPI CF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 258 {
 259     TRACE("(%d)\n", dolock);
 260
 261     if (dolock)
 262            URLMON_LockModule();
 263     else
 264            URLMON_UnlockModule();
 265
 266     return S_OK;
 267 }
 268
 269 static const IClassFactoryVtbl ClassFactoryVtbl =
 270 {
 271     CF_QueryInterface,
 272     CF_AddRef,
 273     CF_Release,
 274     CF_CreateInstance,
 275     CF_LockServer
 276 };
 277
 278 static ClassFactory FileProtocolCF =
 279     { { &ClassFactoryVtbl }, FileProtocol_Construct};
 280 static ClassFactory FtpProtocolCF =
 281     { { &ClassFactoryVtbl }, FtpProtocol_Construct};
 282 static ClassFactory GopherProtocolCF =
 283     { { &ClassFactoryVtbl }, GopherProtocol_Construct};
 284 static ClassFactory HttpProtocolCF =
 285     { { &ClassFactoryVtbl }, HttpProtocol_Construct};
 286 static ClassFactory HttpSProtocolCF =
 287     { { &ClassFactoryVtbl }, HttpSProtocol_Construct};
 288 static ClassFactory MkProtocolCF =
 289     { { &ClassFactoryVtbl }, MkProtocol_Construct};
 290 static ClassFactory SecurityManagerCF =
 291     { { &ClassFactoryVtbl }, SecManagerImpl_Construct};
 292 static ClassFactory ZoneManagerCF =
 293     { { &ClassFactoryVtbl }, ZoneMgrImpl_Construct};
 294 static ClassFactory StdURLMonikerCF =
 295     { { &ClassFactoryVtbl }, StdURLMoniker_Construct};
 296 static ClassFactory MimeFilterCF =
 297     { { &ClassFactoryVtbl }, MimeFilter_Construct};
 298 static ClassFactory CUriCF =
 299     { { &ClassFactoryVtbl }, Uri_Construct};
 300
 301 struct object_creation_info
 302 {
 303     const CLSID *clsid;
 304     IClassFactory *cf;
 305     LPCWSTR protocol;
 306 };
 307
 308 static const WCHAR wszFile[] = {'f','i','l','e',0};
 309 static const WCHAR wszFtp[]  = {'f','t','p',0};
 310 static const WCHAR wszGopher[]  = {'g','o','p','h','e','r',0};
 311 static const WCHAR wszHttp[] = {'h','t','t','p',0};
 312 static const WCHAR wszHttps[] = {'h','t','t','p','s',0};
 313 static const WCHAR wszMk[]   = {'m','k',0};
 314
 315 static const struct object_creation_info object_creation[] =
 316 {
 317     { &CLSID_FileProtocol,            &FileProtocolCF.IClassFactory_iface,    wszFile },
 318     { &CLSID_FtpProtocol,             &FtpProtocolCF.IClassFactory_iface,     wszFtp  },
 319     { &CLSID_GopherProtocol,          &GopherProtocolCF.IClassFactory_iface,  wszGopher },
 320     { &CLSID_HttpProtocol,            &HttpProtocolCF.IClassFactory_iface,    wszHttp },
 321     { &CLSID_HttpSProtocol,           &HttpSProtocolCF.IClassFactory_iface,   wszHttps },
 322     { &CLSID_MkProtocol,              &MkProtocolCF.IClassFactory_iface,      wszMk },
 323     { &CLSID_InternetSecurityManager, &SecurityManagerCF.IClassFactory_iface, NULL    },
 324     { &CLSID_InternetZoneManager,     &ZoneManagerCF.IClassFactory_iface,     NULL    },
 325     { &CLSID_StdURLMoniker,           &StdURLMonikerCF.IClassFactory_iface,   NULL    },
 326     { &CLSID_DeCompMimeFilter,        &MimeFilterCF.IClassFactory_iface,      NULL    },
 327     { &CLSID_CUri,                    &CUriCF.IClassFactory_iface,            NULL    }
 328 };
 329
 330 static void init_session(BOOL init)
 331 {
 332     unsigned int i;
 333
 334     for(i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++) {
 335
 336         if(object_creation[i].protocol)
 337             register_urlmon_namespace(object_creation[i].cf, object_creation[i].clsid,
 338                                       object_creation[i].protocol, init);
 339     }
 340 }
 341
 342 /*******************************************************************************
 343  * DllGetClassObject [URLMON.@]
 344  * Retrieves class object from a DLL object
 345  *
 346  * NOTES
 347  *    Docs say returns STDAPI
 348  *
 349  * PARAMS
 350  *    rclsid [I] CLSID for the class object
 351  *    riid   [I] Reference to identifier of interface for class object
 352  *    ppv    [O] Address of variable to receive interface pointer for riid
 353  *
 354  * RETURNS
 355  *    Success: S_OK
 356  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 357  *             E_UNEXPECTED
 358  */
 359
 360 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 361 {
 362     unsigned int i;
 363     HRESULT hr;
 364
 365     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 366
 367     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 368     {
 369         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 370             return IClassFactory_QueryInterface(object_creation[i].cf, riid, ppv);
 371     }
 372
 373     hr = URLMON_DllGetClassObject(rclsid, riid, ppv);
 374     if(SUCCEEDED(hr))
 375         return hr;
 376
 377     FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 378     return CLASS_E_CLASSNOTAVAILABLE;
 379 }
 380
 381 static HRESULT register_inf(BOOL doregister)
 382 {
 383     HRESULT (WINAPI *pRegInstall)(HMODULE hm, LPCSTR pszSection, const STRTABLEA* pstTable);
 384     HMODULE hAdvpack;
 385
 386     static const WCHAR wszAdvpack[] = {'a','d','v','p','a','c','k','.','d','l','l',0};
 387
 388     hAdvpack = LoadLibraryW(wszAdvpack);
 389     pRegInstall = (void *)GetProcAddress(hAdvpack, "RegInstall");
 390
 391     return pRegInstall(hProxyDll, doregister ? "RegisterDll" : "UnregisterDll", NULL);
 392 }
 393
 394 /***********************************************************************
 395  *              DllRegisterServer (URLMON.@)
 396  */
 397 HRESULT WINAPI DllRegisterServer(void)
 398 {
 399     HRESULT hr;
 400
 401     TRACE("\n");
 402
 403     hr = URLMON_DllRegisterServer();
 404     return SUCCEEDED(hr) ? register_inf(TRUE) : hr;
 405 }
 406
 407 /***********************************************************************
 408  *              DllUnregisterServer (URLMON.@)
 409  */
 410 HRESULT WINAPI DllUnregisterServer(void)
 411 {
 412     HRESULT hr;
 413
 414     TRACE("\n");
 415
 416     hr = URLMON_DllUnregisterServer();
 417     return SUCCEEDED(hr) ? register_inf(FALSE) : hr;
 418 }
 419
 420 /***********************************************************************
 421  *              DllRegisterServerEx (URLMON.@)
 422  */
 423 HRESULT WINAPI DllRegisterServerEx(void)
 424 {
 425     FIXME("(void): stub\n");
 426
 427     return E_FAIL;
 428 }
 429
 430 /**************************************************************************
 431  *                 IsValidURL (URLMON.@)
 432  *
 433  * Determines if a specified string is a valid URL.
 434  *
 435  * PARAMS
 436  *  pBC        [I] ignored, should be NULL.
 437  *  szURL      [I] string that represents the URL in question.
 438  *  dwReserved [I] reserved and must be zero.
 439  *
 440  * RETURNS
 441  *  Success: S_OK.
 442  *  Failure: S_FALSE.
 443  *  returns E_INVALIDARG if one or more of the args is invalid.
 444  *
 445  * TODO:
 446  *  test functionality against windows to see what a valid URL is.
 447  */
 448 HRESULT WINAPI IsValidURL(LPBC pBC, LPCWSTR szURL, DWORD dwReserved)
 449 {
 450     FIXME("(%p, %s, %d): stub\n", pBC, debugstr_w(szURL), dwReserved);
 451
 452     if (dwReserved || !szURL)
 453         return E_INVALIDARG;
 454
 455     return S_OK;
 456 }
 457
 458 /**************************************************************************
 459  *                 FaultInIEFeature (URLMON.@)
 460  *
 461  *  Undocumented.  Appears to be used by native shdocvw.dll.
 462  */
 463 HRESULT WINAPI FaultInIEFeature( HWND hwnd, uCLSSPEC * pClassSpec,
 464                                  QUERYCONTEXT *pQuery, DWORD flags )
 465 {
 466     FIXME("%p %p %p %08x\n", hwnd, pClassSpec, pQuery, flags);
 467     return E_NOTIMPL;
 468 }
 469
 470 /**************************************************************************
 471  *                 CoGetClassObjectFromURL (URLMON.@)
 472  */
 473 HRESULT WINAPI CoGetClassObjectFromURL( REFCLSID rclsid, LPCWSTR szCodeURL, DWORD dwFileVersionMS,
 474                                         DWORD dwFileVersionLS, LPCWSTR szContentType,
 475                                         LPBINDCTX pBindCtx, DWORD dwClsContext, LPVOID pvReserved,
 476                                         REFIID riid, LPVOID *ppv )
 477 {
 478     FIXME("(%s %s %d %d %s %p %d %p %s %p) Stub!\n", debugstr_guid(rclsid), debugstr_w(szCodeURL),
 479         dwFileVersionMS, dwFileVersionLS, debugstr_w(szContentType), pBindCtx, dwClsContext, pvReserved,
 480         debugstr_guid(riid), ppv);
 481     return E_NOINTERFACE;
 482 }
 483
 484 /***********************************************************************
 485  *           ReleaseBindInfo (URLMON.@)
 486  *
 487  * Release the resources used by the specified BINDINFO structure.
 488  *
 489  * PARAMS
 490  *  pbindinfo [I] BINDINFO to release.
 491  *
 492  * RETURNS
 493  *  Nothing.
 494  */
 495 void WINAPI ReleaseBindInfo(BINDINFO* pbindinfo)
 496 {
 497     DWORD size;
 498
 499     TRACE("(%p)\n", pbindinfo);
 500
 501     if(!pbindinfo || !(size = pbindinfo->cbSize))
 502         return;
 503
 504     CoTaskMemFree(pbindinfo->szExtraInfo);
 505     ReleaseStgMedium(&pbindinfo->stgmedData);
 506
 507     if(offsetof(BINDINFO, szExtraInfo) < size)
 508         CoTaskMemFree(pbindinfo->szCustomVerb);
 509
 510     if(pbindinfo->pUnk && offsetof(BINDINFO, pUnk) < size)
 511         IUnknown_Release(pbindinfo->pUnk);
 512
 513     memset(pbindinfo, 0, size);
 514     pbindinfo->cbSize = size;
 515 }
 516
 517 /***********************************************************************
 518  *           CopyStgMedium (URLMON.@)
 519  */
 520 HRESULT WINAPI CopyStgMedium(const STGMEDIUM *src, STGMEDIUM *dst)
 521 {
 522     TRACE("(%p %p)\n", src, dst);
 523
 524     if(!src || !dst)
 525         return E_POINTER;
 526
 527     *dst = *src;
 528
 529     switch(dst->tymed) {
 530     case TYMED_NULL:
 531         break;
 532     case TYMED_FILE:
 533         if(src->u.lpszFileName && !src->pUnkForRelease) {
 534             DWORD size = (strlenW(src->u.lpszFileName)+1)*sizeof(WCHAR);
 535             dst->u.lpszFileName = CoTaskMemAlloc(size);
 536             memcpy(dst->u.lpszFileName, src->u.lpszFileName, size);
 537         }
 538         break;
 539     case TYMED_ISTREAM:
 540         if(dst->u.pstm)
 541             IStream_AddRef(dst->u.pstm);
 542         break;
 543     case TYMED_ISTORAGE:
 544         if(dst->u.pstg)
 545             IStorage_AddRef(dst->u.pstg);
 546         break;
 547     default:
 548         FIXME("Unimplemented tymed %d\n", src->tymed);
 549     }
 550
 551     if(dst->pUnkForRelease)
 552         IUnknown_AddRef(dst->pUnkForRelease);
 553
 554     return S_OK;
 555 }
 556
 557 static BOOL text_richtext_filter(const BYTE *b, DWORD size)
 558 {
 559     return size > 5 && !memcmp(b, "{\\rtf", 5);
 560 }
 561
 562 static BOOL text_html_filter(const BYTE *b, DWORD size)
 563 {
 564     DWORD i;
 565
 566     if(size < 5)
 567         return FALSE;
 568
 569     for(i = 0; i < size-5; i++) {
 570         if((b[i] == '<'
 571             && (b[i+1] == 'h' || b[i+1] == 'H')
 572             && (b[i+2] == 't' || b[i+2] == 'T')
 573             && (b[i+3] == 'm' || b[i+3] == 'M')
 574             && (b[i+4] == 'l' || b[i+4] == 'L')) ||
 575            ((size - i >= 6)
 576             &&  b[i]   == '<'
 577             && (b[i+1] == 'h' || b[i+1] == 'H')
 578             && (b[i+2] == 'e' || b[i+2] == 'E')
 579             && (b[i+3] == 'a' || b[i+3] == 'A')
 580             && (b[i+4] == 'd' || b[i+4] == 'D')
 581             &&  b[i+5] == '>')) return TRUE;
 582     }
 583
 584     return FALSE;
 585 }
 586
 587 static BOOL audio_basic_filter(const BYTE *b, DWORD size)
 588 {
 589     return size > 4
 590         && b[0] == '.' && b[1] == 's' && b[2] == 'n' && b[3] == 'd';
 591 }
 592
 593 static BOOL audio_wav_filter(const BYTE *b, DWORD size)
 594 {
 595     return size > 12
 596         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 597         && b[8] == 'W' && b[9] == 'A' && b[10] == 'V' && b[11] == 'E';
 598 }
 599
 600 static BOOL image_gif_filter(const BYTE *b, DWORD size)
 601 {
 602     return size >= 6
 603         && (b[0] == 'G' || b[0] == 'g')
 604         && (b[1] == 'I' || b[1] == 'i')
 605         && (b[2] == 'F' || b[2] == 'f')
 606         &&  b[3] == '8'
 607         && (b[4] == '7' || b[4] == '9')
 608         && (b[5] == 'A' || b[5] == 'a');
 609 }
 610
 611 static BOOL image_pjpeg_filter(const BYTE *b, DWORD size)
 612 {
 613     return size > 2 && b[0] == 0xff && b[1] == 0xd8;
 614 }
 615
 616 static BOOL image_tiff_filter(const BYTE *b, DWORD size)
 617 {
 618     static const BYTE magic1[] = {0x4d,0x4d,0x00,0x2a};
 619     static const BYTE magic2[] = {0x49,0x49,0x2a,0xff};
 620
 621     return size >= 4 && (!memcmp(b, magic1, 4) || !memcmp(b, magic2, 4));
 622 }
 623
 624 static BOOL image_xpng_filter(const BYTE *b, DWORD size)
 625 {
 626     static const BYTE xpng_header[] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
 627     return size > sizeof(xpng_header) && !memcmp(b, xpng_header, sizeof(xpng_header));
 628 }
 629
 630 static BOOL image_bmp_filter(const BYTE *b, DWORD size)
 631 {
 632     return size >= 14
 633         && b[0] == 0x42 && b[1] == 0x4d
 634         && *(const DWORD *)(b+6) == 0;
 635 }
 636
 637 static BOOL video_avi_filter(const BYTE *b, DWORD size)
 638 {
 639     return size > 12
 640         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 641         && b[8] == 'A' && b[9] == 'V' && b[10] == 'I' && b[11] == 0x20;
 642 }
 643
 644 static BOOL video_mpeg_filter(const BYTE *b, DWORD size)
 645 {
 646     return size > 4
 647         && !b[0] && !b[1] && b[2] == 0x01
 648         && (b[3] == 0xb3 || b[3] == 0xba);
 649 }
 650
 651 static BOOL application_postscript_filter(const BYTE *b, DWORD size)
 652 {
 653     return size > 2 && b[0] == '%' && b[1] == '!';
 654 }
 655
 656 static BOOL application_pdf_filter(const BYTE *b, DWORD size)
 657 {
 658     return size > 4 && b[0] == 0x25 && b[1] == 0x50 && b[2] == 0x44 && b[3] == 0x46;
 659 }
 660
 661 static BOOL application_xzip_filter(const BYTE *b, DWORD size)
 662 {
 663     return size > 2 && b[0] == 0x50 && b[1] == 0x4b;
 664 }
 665
 666 static BOOL application_xgzip_filter(const BYTE *b, DWORD size)
 667 {
 668     return size > 2 && b[0] == 0x1f && b[1] == 0x8b;
 669 }
 670
 671 static BOOL application_java_filter(const BYTE *b, DWORD size)
 672 {
 673     return size > 4 && b[0] == 0xca && b[1] == 0xfe && b[2] == 0xba && b[3] == 0xbe;
 674 }
 675
 676 static BOOL application_xmsdownload(const BYTE *b, DWORD size)
 677 {
 678     return size > 2 && b[0] == 'M' && b[1] == 'Z';
 679 }
 680
 681 static BOOL text_plain_filter(const BYTE *b, DWORD size)
 682 {
 683     const BYTE *ptr;
 684
 685     for(ptr = b; ptr < b+size-1; ptr++) {
 686         if(*ptr < 0x20 && *ptr != '\n' && *ptr != '\r' && *ptr != '\t')
 687             return FALSE;
 688     }
 689
 690     return TRUE;
 691 }
 692
 693 static BOOL application_octet_stream_filter(const BYTE *b, DWORD size)
 694 {
 695     return TRUE;
 696 }
 697
 698 static HRESULT find_mime_from_buffer(const BYTE *buf, DWORD size, const WCHAR *proposed_mime, WCHAR **ret_mime)
 699 {
 700     LPCWSTR ret = NULL;
 701     DWORD len, i;
 702
 703     static const WCHAR text_htmlW[] = {'t','e','x','t','/','h','t','m','l',0};
 704     static const WCHAR text_richtextW[] = {'t','e','x','t','/','r','i','c','h','t','e','x','t',0};
 705     static const WCHAR audio_basicW[] = {'a','u','d','i','o','/','b','a','s','i','c',0};
 706     static const WCHAR audio_wavW[] = {'a','u','d','i','o','/','w','a','v',0};
 707     static const WCHAR image_gifW[] = {'i','m','a','g','e','/','g','i','f',0};
 708     static const WCHAR image_pjpegW[] = {'i','m','a','g','e','/','p','j','p','e','g',0};
 709     static const WCHAR image_tiffW[] = {'i','m','a','g','e','/','t','i','f','f',0};
 710     static const WCHAR image_xpngW[] = {'i','m','a','g','e','/','x','-','p','n','g',0};
 711     static const WCHAR image_bmpW[] = {'i','m','a','g','e','/','b','m','p',0};
 712     static const WCHAR video_aviW[] = {'v','i','d','e','o','/','a','v','i',0};
 713     static const WCHAR video_mpegW[] = {'v','i','d','e','o','/','m','p','e','g',0};
 714     static const WCHAR app_postscriptW[] =
 715         {'a','p','p','l','i','c','a','t','i','o','n','/','p','o','s','t','s','c','r','i','p','t',0};
 716     static const WCHAR app_pdfW[] = {'a','p','p','l','i','c','a','t','i','o','n','/','p','d','f',0};
 717     static const WCHAR app_xzipW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 718         'x','-','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 719     static const WCHAR app_xgzipW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 720         'x','-','g','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 721     static const WCHAR app_javaW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 722         'j','a','v','a',0};
 723     static const WCHAR app_xmsdownloadW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 724         'x','-','m','s','d','o','w','n','l','o','a','d',0};
 725     static const WCHAR text_plainW[] = {'t','e','x','t','/','p','l','a','i','n','\0'};
 726     static const WCHAR app_octetstreamW[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 727         'o','c','t','e','t','-','s','t','r','e','a','m','\0'};
 728
 729     static const struct {
 730         LPCWSTR mime;
 731         BOOL (*filter)(const BYTE *,DWORD);
 732     } mime_filters[] = {
 733         {text_htmlW,       text_html_filter},
 734         {text_richtextW,   text_richtext_filter},
 735      /* {audio_xaiffW,     audio_xaiff_filter}, */
 736         {audio_basicW,     audio_basic_filter},
 737         {audio_wavW,       audio_wav_filter},
 738         {image_gifW,       image_gif_filter},
 739         {image_pjpegW,     image_pjpeg_filter},
 740         {image_tiffW,      image_tiff_filter},
 741         {image_xpngW,      image_xpng_filter},
 742      /* {image_xbitmapW,   image_xbitmap_filter}, */
 743         {image_bmpW,       image_bmp_filter},
 744      /* {image_xjgW,       image_xjg_filter}, */
 745      /* {image_xemfW,      image_xemf_filter}, */
 746      /* {image_xwmfW,      image_xwmf_filter}, */
 747         {video_aviW,       video_avi_filter},
 748         {video_mpegW,      video_mpeg_filter},
 749         {app_postscriptW,  application_postscript_filter},
 750      /* {app_base64W,      application_base64_filter}, */
 751      /* {app_macbinhex40W, application_macbinhex40_filter}, */
 752         {app_pdfW,         application_pdf_filter},
 753      /* {app_zcompressedW, application_xcompressed_filter}, */
 754         {app_xzipW,        application_xzip_filter},
 755         {app_xgzipW,       application_xgzip_filter},
 756         {app_javaW,        application_java_filter},
 757         {app_xmsdownloadW, application_xmsdownload},
 758         {text_plainW,      text_plain_filter},
 759         {app_octetstreamW, application_octet_stream_filter}
 760     };
 761
 762     if(!buf || !size) {
 763         if(!proposed_mime)
 764             return E_FAIL;
 765
 766         len = strlenW(proposed_mime)+1;
 767         *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 768         if(!*ret_mime)
 769             return E_OUTOFMEMORY;
 770
 771         memcpy(*ret_mime, proposed_mime, len*sizeof(WCHAR));
 772         return S_OK;
 773     }
 774
 775     if(proposed_mime && strcmpW(proposed_mime, app_octetstreamW)) {
 776         for(i=0; i < sizeof(mime_filters)/sizeof(*mime_filters); i++) {
 777             if(!strcmpW(proposed_mime, mime_filters[i].mime))
 778                 break;
 779         }
 780
 781         if(i == sizeof(mime_filters)/sizeof(*mime_filters) || mime_filters[i].filter(buf, size)) {
 782             len = strlenW(proposed_mime)+1;
 783             *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 784             if(!*ret_mime)
 785                 return E_OUTOFMEMORY;
 786
 787             memcpy(*ret_mime, proposed_mime, len*sizeof(WCHAR));
 788             return S_OK;
 789         }
 790     }
 791
 792     i=0;
 793     while(!ret) {
 794         if(mime_filters[i].filter(buf, size))
 795             ret = mime_filters[i].mime;
 796         i++;
 797     }
 798
 799     TRACE("found %s for %s\n", debugstr_w(ret), debugstr_an((const char*)buf, min(32, size)));
 800
 801     if(proposed_mime) {
 802         if(i == sizeof(mime_filters)/sizeof(*mime_filters))
 803             ret = proposed_mime;
 804
 805         /* text/html is a special case */
 806         if(!strcmpW(proposed_mime, text_htmlW) && !strcmpW(ret, text_plainW))
 807             ret = text_htmlW;
 808     }
 809
 810     len = strlenW(ret)+1;
 811     *ret_mime = CoTaskMemAlloc(len*sizeof(WCHAR));
 812     if(!*ret_mime)
 813         return E_OUTOFMEMORY;
 814
 815     memcpy(*ret_mime, ret, len*sizeof(WCHAR));
 816     return S_OK;
 817 }
 818
 819 /***********************************************************************
 820  *           FindMimeFromData (URLMON.@)
 821  *
 822  * Determines the Multipurpose Internet Mail Extensions (MIME) type from the data provided.
 823  */
 824 HRESULT WINAPI FindMimeFromData(LPBC pBC, LPCWSTR pwzUrl, LPVOID pBuffer,
 825         DWORD cbSize, LPCWSTR pwzMimeProposed, DWORD dwMimeFlags,
 826         LPWSTR* ppwzMimeOut, DWORD dwReserved)
 827 {
 828     TRACE("(%p,%s,%p,%d,%s,0x%x,%p,0x%x)\n", pBC, debugstr_w(pwzUrl), pBuffer, cbSize,
 829             debugstr_w(pwzMimeProposed), dwMimeFlags, ppwzMimeOut, dwReserved);
 830
 831     if(dwMimeFlags)
 832         WARN("dwMimeFlags=%08x\n", dwMimeFlags);
 833     if(dwReserved)
 834         WARN("dwReserved=%d\n", dwReserved);
 835
 836     /* pBC seams to not be used */
 837
 838     if(!ppwzMimeOut || (!pwzUrl && !pBuffer))
 839         return E_INVALIDARG;
 840
 841     if(pwzMimeProposed || pBuffer)
 842         return find_mime_from_buffer(pBuffer, cbSize, pwzMimeProposed, ppwzMimeOut);
 843
 844     if(pwzUrl) {
 845         HKEY hkey;
 846         DWORD res, size;
 847         LPCWSTR ptr;
 848         WCHAR mime[64];
 849
 850         static const WCHAR wszContentType[] =
 851                 {'C','o','n','t','e','n','t',' ','T','y','p','e','\0'};
 852
 853         ptr = strrchrW(pwzUrl, '.');
 854         if(!ptr)
 855             return E_FAIL;
 856
 857         res = RegOpenKeyW(HKEY_CLASSES_ROOT, ptr, &hkey);
 858         if(res != ERROR_SUCCESS)
 859             return HRESULT_FROM_WIN32(res);
 860
 861         size = sizeof(mime);
 862         res = RegQueryValueExW(hkey, wszContentType, NULL, NULL, (LPBYTE)mime, &size);
 863         RegCloseKey(hkey);
 864         if(res != ERROR_SUCCESS)
 865             return HRESULT_FROM_WIN32(res);
 866
 867         *ppwzMimeOut = CoTaskMemAlloc(size);
 868         memcpy(*ppwzMimeOut, mime, size);
 869         return S_OK;
 870     }
 871
 872     return E_FAIL;
 873 }
 874
 875 /***********************************************************************
 876  *           GetClassFileOrMime (URLMON.@)
 877  *
 878  * Determines the class ID from the bind context, file name or MIME type.
 879  */
 880 HRESULT WINAPI GetClassFileOrMime(LPBC pBC, LPCWSTR pszFilename,
 881         LPVOID pBuffer, DWORD cbBuffer, LPCWSTR pszMimeType, DWORD dwReserved,
 882         CLSID *pclsid)
 883 {
 884     FIXME("(%p, %s, %p, %d, %p, 0x%08x, %p): stub\n", pBC,
 885         debugstr_w(pszFilename), pBuffer, cbBuffer, debugstr_w(pszMimeType),
 886         dwReserved, pclsid);
 887     return E_NOTIMPL;
 888 }
 889
 890 /***********************************************************************
 891  * Extract (URLMON.@)
 892  */
 893 HRESULT WINAPI Extract(void *dest, LPCSTR szCabName)
 894 {
 895     HRESULT (WINAPI *pExtract)(void *, LPCSTR);
 896
 897     if (!hCabinet)
 898         hCabinet = LoadLibraryA("cabinet.dll");
 899
 900     if (!hCabinet) return HRESULT_FROM_WIN32(GetLastError());
 901     pExtract = (void *)GetProcAddress(hCabinet, "Extract");
 902     if (!pExtract) return HRESULT_FROM_WIN32(GetLastError());
 903
 904     return pExtract(dest, szCabName);
 905 }
 906
 907 /***********************************************************************
 908  *           IsLoggingEnabledA (URLMON.@)
 909  */
 910 BOOL WINAPI IsLoggingEnabledA(LPCSTR url)
 911 {
 912     FIXME("(%s)\n", debugstr_a(url));
 913     return FALSE;
 914 }
 915
 916 /***********************************************************************
 917  *           IsLoggingEnabledW (URLMON.@)
 918  */
 919 BOOL WINAPI IsLoggingEnabledW(LPCWSTR url)
 920 {
 921     FIXME("(%s)\n", debugstr_w(url));
 922     return FALSE;
 923 }
 924
 925 /***********************************************************************
 926  *           IsProtectedModeURL (URLMON.111)
 927  *    Undocumented, added in IE7
 928  */
 929 BOOL WINAPI IsProtectedModeURL(const WCHAR *url)
 930 {
 931     FIXME("stub: %s\n", debugstr_w(url));
 932     return TRUE;
 933 }
 934
 935 /***********************************************************************
 936  *           LogSqmBits (URLMON.410)
 937  *    Undocumented, added in IE8
 938  */
 939 int WINAPI LogSqmBits(DWORD unk1, DWORD unk2)
 940 {
 941     FIXME("stub: %d %d\n", unk1, unk2);
 942     return 0;
 943 }
 944
 945 /***********************************************************************
 946  *           LogSqmUXCommandOffsetInternal (URLMON.423)
 947  *    Undocumented, added in IE8
 948  */
 949 void WINAPI LogSqmUXCommandOffsetInternal(DWORD unk1, DWORD unk2, DWORD unk3, DWORD unk4)
 950 {
 951     FIXME("stub: %d %d %d %d\n", unk1, unk2, unk3, unk4);
 952 }
 953
 954 /***********************************************************************
 955  *           MapUriToBrowserEmulationState (URLMON.444)
 956  *    Undocumented, added in IE8
 957  */
 958 int WINAPI MapUriToBrowserEmulationState(DWORD unk1, DWORD unk2, DWORD unk3)
 959 {
 960     FIXME("stub: %d %d %d\n", unk1, unk2, unk3);
 961     return 0;
 962 }
 963
 964 /***********************************************************************
 965  *           MapBrowserEmulationModeToUserAgent (URLMON.445)
 966  *    Undocumented, added in IE8
 967  */
 968 int WINAPI MapBrowserEmulationModeToUserAgent(DWORD unk1, DWORD unk2)
 969 {
 970     FIXME("stub: %d %d\n", unk1, unk2);
 971     return 0;
 972 }
 973
 974 /***********************************************************************
 975  *            RegisterMediaTypes
 976  *    Added in IE3, registers known MIME-type strings.
 977  */
 978 HRESULT WINAPI RegisterMediaTypes(UINT types, LPCSTR *szTypes, CLIPFORMAT *cfTypes)
 979 {
 980    FIXME("stub: %u %p %p\n", types, szTypes, cfTypes);
 981    return E_INVALIDARG;
 982 }