git.oblomov.eu Git - wine/blob - 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 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winreg.h"
  28
  29 #define NO_SHLWAPI_REG
  30 #include "shlwapi.h"
  31 #include "wine/debug.h"
  32 #include "wine/unicode.h"
  33
  34 #include "winuser.h"
  35 #include "urlmon.h"
  36 #include "urlmon_main.h"
  37 #include "ole2.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  40
  41 LONG URLMON_refCount = 0;
  42
  43 HINSTANCE URLMON_hInstance = 0;
  44 static HMODULE hCabinet = NULL;
  45
  46 static void init_session(BOOL);
  47
  48 /***********************************************************************
  49  *              DllMain (URLMON.init)
  50  */
  51 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
  52 {
  53     TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, fImpLoad);
  54
  55     switch(fdwReason) {
  56     case DLL_PROCESS_ATTACH:
  57         DisableThreadLibraryCalls(hinstDLL);
  58         URLMON_hInstance = hinstDLL;
  59         init_session(TRUE);
  60         break;
  61
  62     case DLL_PROCESS_DETACH:
  63         if (hCabinet)
  64             FreeLibrary(hCabinet);
  65         hCabinet = NULL;
  66         init_session(FALSE);
  67         URLMON_hInstance = 0;
  68         break;
  69     }
  70     return TRUE;
  71 }
  72
  73
  74 /***********************************************************************
  75  *              DllInstall (URLMON.@)
  76  */
  77 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
  78 {
  79   FIXME("(%s, %s): stub\n", bInstall?"TRUE":"FALSE",
  80         debugstr_w(cmdline));
  81
  82   return S_OK;
  83 }
  84
  85 /***********************************************************************
  86  *              DllCanUnloadNow (URLMON.@)
  87  */
  88 HRESULT WINAPI DllCanUnloadNow(void)
  89 {
  90     return URLMON_refCount != 0 ? S_FALSE : S_OK;
  91 }
  92
  93
  94
  95 /******************************************************************************
  96  * Urlmon ClassFactory
  97  */
  98 typedef struct {
  99     const IClassFactoryVtbl *lpClassFactoryVtbl;
 100
 101     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
 102 } ClassFactory;
 103
 104 #define CLASSFACTORY(x)  ((IClassFactory*)  &(x)->lpClassFactoryVtbl)
 105
 106 static HRESULT WINAPI CF_QueryInterface(IClassFactory *iface, REFIID riid, LPVOID *ppv)
 107 {
 108     *ppv = NULL;
 109
 110     if(IsEqualGUID(riid, &IID_IUnknown)) {
 111         TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
 112         *ppv = iface;
 113     }else if(IsEqualGUID(riid, &IID_IClassFactory)) {
 114         TRACE("(%p)->(IID_IClassFactory %p)\n", iface, ppv);
 115         *ppv = iface;
 116     }
 117
 118     if(*ppv) {
 119         IUnknown_AddRef((IUnknown*)*ppv);
 120         return S_OK;
 121     }
 122
 123     WARN("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ppv);
 124     return E_NOINTERFACE;
 125 }
 126
 127 static ULONG WINAPI CF_AddRef(IClassFactory *iface)
 128 {
 129     URLMON_LockModule();
 130     return 2;
 131 }
 132
 133 static ULONG WINAPI CF_Release(IClassFactory *iface)
 134 {
 135     URLMON_UnlockModule();
 136     return 1;
 137 }
 138
 139
 140 static HRESULT WINAPI CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
 141                                         REFIID riid, LPVOID *ppobj)
 142 {
 143     ClassFactory *This = (ClassFactory*)iface;
 144     HRESULT hres;
 145     LPUNKNOWN punk;
 146
 147     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 148
 149     *ppobj = NULL;
 150     if(SUCCEEDED(hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk))) {
 151         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 152         IUnknown_Release(punk);
 153     }
 154     return hres;
 155 }
 156
 157 static HRESULT WINAPI CF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 158 {
 159     TRACE("(%d)\n", dolock);
 160
 161     if (dolock)
 162            URLMON_LockModule();
 163     else
 164            URLMON_UnlockModule();
 165
 166     return S_OK;
 167 }
 168
 169 static const IClassFactoryVtbl ClassFactoryVtbl =
 170 {
 171     CF_QueryInterface,
 172     CF_AddRef,
 173     CF_Release,
 174     CF_CreateInstance,
 175     CF_LockServer
 176 };
 177
 178 static const ClassFactory FileProtocolCF =
 179     { &ClassFactoryVtbl, FileProtocol_Construct};
 180 static const ClassFactory FtpProtocolCF =
 181     { &ClassFactoryVtbl, FtpProtocol_Construct};
 182 static const ClassFactory HttpProtocolCF =
 183     { &ClassFactoryVtbl, HttpProtocol_Construct};
 184 static const ClassFactory HttpSProtocolCF =
 185     { &ClassFactoryVtbl, HttpSProtocol_Construct};
 186 static const ClassFactory MkProtocolCF =
 187     { &ClassFactoryVtbl, MkProtocol_Construct};
 188 static const ClassFactory SecurityManagerCF =
 189     { &ClassFactoryVtbl, SecManagerImpl_Construct};
 190 static const ClassFactory ZoneManagerCF =
 191     { &ClassFactoryVtbl, ZoneMgrImpl_Construct};
 192
 193 struct object_creation_info
 194 {
 195     const CLSID *clsid;
 196     IClassFactory *cf;
 197     LPCWSTR protocol;
 198 };
 199
 200 static const WCHAR wszFile[] = {'f','i','l','e',0};
 201 static const WCHAR wszFtp[]  = {'f','t','p',0};
 202 static const WCHAR wszHttp[] = {'h','t','t','p',0};
 203 static const WCHAR wszHttps[] = {'h','t','t','p','s',0};
 204 static const WCHAR wszMk[]   = {'m','k',0};
 205
 206 static const struct object_creation_info object_creation[] =
 207 {
 208     { &CLSID_FileProtocol,            CLASSFACTORY(&FileProtocolCF),    wszFile },
 209     { &CLSID_FtpProtocol,             CLASSFACTORY(&FtpProtocolCF),     wszFtp  },
 210     { &CLSID_HttpProtocol,            CLASSFACTORY(&HttpProtocolCF),    wszHttp },
 211     { &CLSID_HttpSProtocol,           CLASSFACTORY(&HttpSProtocolCF),   wszHttps },
 212     { &CLSID_MkProtocol,              CLASSFACTORY(&MkProtocolCF),      wszMk },
 213     { &CLSID_InternetSecurityManager, CLASSFACTORY(&SecurityManagerCF), NULL    },
 214     { &CLSID_InternetZoneManager,     CLASSFACTORY(&ZoneManagerCF),     NULL    }
 215 };
 216
 217 static void init_session(BOOL init)
 218 {
 219     IInternetSession *session;
 220     int i;
 221
 222     CoInternetGetSession(0, &session, 0);
 223
 224     for(i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++) {
 225         if(object_creation[i].protocol) {
 226             if(init)
 227             {
 228                 IInternetSession_RegisterNameSpace(session, object_creation[i].cf,
 229                         object_creation[i].clsid, object_creation[i].protocol, 0, NULL, 0);
 230                 /* make sure that the AddRef on the class factory doesn't keep us loaded */
 231                 URLMON_UnlockModule();
 232             }
 233             else
 234             {
 235                 /* make sure that the Release on the class factory doesn't unload us */
 236                 URLMON_LockModule();
 237                 IInternetSession_UnregisterNameSpace(session, object_creation[i].cf,
 238                         object_creation[i].protocol);
 239             }
 240         }
 241     }
 242
 243     IInternetSession_Release(session);
 244 }
 245
 246 /*******************************************************************************
 247  * DllGetClassObject [URLMON.@]
 248  * Retrieves class object from a DLL object
 249  *
 250  * NOTES
 251  *    Docs say returns STDAPI
 252  *
 253  * PARAMS
 254  *    rclsid [I] CLSID for the class object
 255  *    riid   [I] Reference to identifier of interface for class object
 256  *    ppv    [O] Address of variable to receive interface pointer for riid
 257  *
 258  * RETURNS
 259  *    Success: S_OK
 260  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 261  *             E_UNEXPECTED
 262  */
 263
 264 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 265 {
 266     int i;
 267
 268     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 269
 270     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 271     {
 272         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 273             return IClassFactory_QueryInterface(object_creation[i].cf, riid, ppv);
 274     }
 275
 276     FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 277     return CLASS_E_CLASSNOTAVAILABLE;
 278 }
 279
 280
 281 /***********************************************************************
 282  *              DllRegisterServerEx (URLMON.@)
 283  */
 284 HRESULT WINAPI DllRegisterServerEx(void)
 285 {
 286     FIXME("(void): stub\n");
 287
 288     return E_FAIL;
 289 }
 290
 291 /**************************************************************************
 292  *                 UrlMkSetSessionOption (URLMON.@)
 293  */
 294 HRESULT WINAPI UrlMkSetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 295                                         DWORD Reserved)
 296 {
 297     FIXME("(%#x, %p, %#x): stub\n", dwOption, pBuffer, dwBufferLength);
 298
 299     return S_OK;
 300 }
 301
 302 static const CHAR Agent[] = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)";
 303
 304 /**************************************************************************
 305  *                 ObtainUserAgentString (URLMON.@)
 306  */
 307 HRESULT WINAPI ObtainUserAgentString(DWORD dwOption, LPSTR pcszUAOut, DWORD *cbSize)
 308 {
 309     FIXME("(%d, %p, %p): stub\n", dwOption, pcszUAOut, cbSize);
 310
 311     if (pcszUAOut == NULL || cbSize == NULL)
 312         return E_INVALIDARG;
 313
 314     if (*cbSize < sizeof(Agent))
 315     {
 316         *cbSize = sizeof(Agent);
 317         return E_OUTOFMEMORY;
 318     }
 319
 320     if (sizeof(Agent) < *cbSize)
 321         *cbSize = sizeof(Agent);
 322     lstrcpynA(pcszUAOut, Agent, *cbSize);
 323
 324     return S_OK;
 325 }
 326
 327 /**************************************************************************
 328  *                 IsValidURL (URLMON.@)
 329  *
 330  * Determines if a specified string is a valid URL.
 331  *
 332  * PARAMS
 333  *  pBC        [I] ignored, must be NULL.
 334  *  szURL      [I] string that represents the URL in question.
 335  *  dwReserved [I] reserved and must be zero.
 336  *
 337  * RETURNS
 338  *  Success: S_OK.
 339  *  Failure: S_FALSE.
 340  *  returns E_INVALIDARG if one or more of the args is invalid.
 341  *
 342  * TODO:
 343  *  test functionality against windows to see what a valid URL is.
 344  */
 345 HRESULT WINAPI IsValidURL(LPBC pBC, LPCWSTR szURL, DWORD dwReserved)
 346 {
 347     FIXME("(%p, %s, %d): stub\n", pBC, debugstr_w(szURL), dwReserved);
 348
 349     if (pBC != NULL || dwReserved != 0)
 350         return E_INVALIDARG;
 351
 352     return S_OK;
 353 }
 354
 355 /**************************************************************************
 356  *                 FaultInIEFeature (URLMON.@)
 357  *
 358  *  Undocumented.  Appears to be used by native shdocvw.dll.
 359  */
 360 HRESULT WINAPI FaultInIEFeature( HWND hwnd, uCLSSPEC * pClassSpec,
 361                                  QUERYCONTEXT *pQuery, DWORD flags )
 362 {
 363     FIXME("%p %p %p %08x\n", hwnd, pClassSpec, pQuery, flags);
 364     return E_NOTIMPL;
 365 }
 366
 367 /**************************************************************************
 368  *                 CoGetClassObjectFromURL (URLMON.@)
 369  */
 370 HRESULT WINAPI CoGetClassObjectFromURL( REFCLSID rclsid, LPCWSTR szCodeURL, DWORD dwFileVersionMS,
 371                                         DWORD dwFileVersionLS, LPCWSTR szContentType,
 372                                         LPBINDCTX pBindCtx, DWORD dwClsContext, LPVOID pvReserved,
 373                                         REFIID riid, LPVOID *ppv )
 374 {
 375     FIXME("(%s %s %d %d %s %p %d %p %s %p) Stub!\n", debugstr_guid(rclsid), debugstr_w(szCodeURL),
 376         dwFileVersionMS, dwFileVersionLS, debugstr_w(szContentType), pBindCtx, dwClsContext, pvReserved,
 377         debugstr_guid(riid), ppv);
 378     return E_NOINTERFACE;
 379 }
 380
 381 /***********************************************************************
 382  *           ReleaseBindInfo (URLMON.@)
 383  *
 384  * Release the resources used by the specified BINDINFO structure.
 385  *
 386  * PARAMS
 387  *  pbindinfo [I] BINDINFO to release.
 388  *
 389  * RETURNS
 390  *  Nothing.
 391  */
 392 void WINAPI ReleaseBindInfo(BINDINFO* pbindinfo)
 393 {
 394     DWORD size;
 395
 396     TRACE("(%p)\n", pbindinfo);
 397
 398     if(!pbindinfo || !(size = pbindinfo->cbSize))
 399         return;
 400
 401     CoTaskMemFree(pbindinfo->szExtraInfo);
 402     ReleaseStgMedium(&pbindinfo->stgmedData);
 403
 404     if(offsetof(BINDINFO, szExtraInfo) < size)
 405         CoTaskMemFree(pbindinfo->szCustomVerb);
 406
 407
 408     if(pbindinfo->pUnk && offsetof(BINDINFO, pUnk) < size)
 409         IUnknown_Release(pbindinfo->pUnk);
 410
 411     memset(pbindinfo, 0, size);
 412     pbindinfo->cbSize = size;
 413 }
 414
 415 static BOOL text_richtext_filter(const BYTE *b, DWORD size)
 416 {
 417     return size > 5 && !memcmp(b, "{\\rtf", 5);
 418 }
 419
 420 static BOOL text_html_filter(const BYTE *b, DWORD size)
 421 {
 422     int i;
 423
 424     if(size < 5)
 425         return FALSE;
 426
 427     for(i=0; i < size-5; i++) {
 428         if(b[i] == '<'
 429            && (b[i+1] == 'h' || b[i+1] == 'H')
 430            && (b[i+2] == 't' || b[i+2] == 'T')
 431            && (b[i+3] == 'm' || b[i+3] == 'M')
 432            && (b[i+4] == 'l' || b[i+4] == 'L'))
 433             return TRUE;
 434     }
 435
 436     return FALSE;
 437 }
 438
 439 static BOOL audio_wav_filter(const BYTE *b, DWORD size)
 440 {
 441     return size > 12
 442         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 443         && b[8] == 'W' && b[9] == 'A' && b[10] == 'V' && b[11] == 'E';
 444 }
 445
 446 static BOOL image_gif_filter(const BYTE *b, DWORD size)
 447 {
 448     return size >= 6
 449         && (b[0] == 'G' || b[0] == 'g')
 450         && (b[1] == 'I' || b[1] == 'i')
 451         && (b[2] == 'F' || b[2] == 'f')
 452         &&  b[3] == '8'
 453         && (b[4] == '7' || b[4] == '9')
 454         && (b[5] == 'A' || b[5] == 'a');
 455 }
 456
 457 static BOOL image_pjpeg_filter(const BYTE *b, DWORD size)
 458 {
 459     return size > 2 && b[0] == 0xff && b[1] == 0xd8;
 460 }
 461
 462 static BOOL image_tiff_filter(const BYTE *b, DWORD size)
 463 {
 464     return size > 2 && b[0] == 0x4d && b[1] == 0x4d;
 465 }
 466
 467 static BOOL image_xpng_filter(const BYTE *b, DWORD size)
 468 {
 469     static const BYTE xpng_header[] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
 470     return size > sizeof(xpng_header) && !memcmp(b, xpng_header, sizeof(xpng_header));
 471 }
 472
 473 static BOOL image_bmp_filter(const BYTE *b, DWORD size)
 474 {
 475     return size >= 14
 476         && b[0] == 0x42 && b[1] == 0x4d
 477         && *(const DWORD *)(b+6) == 0;
 478 }
 479
 480 static BOOL video_avi_filter(const BYTE *b, DWORD size)
 481 {
 482     return size > 12
 483         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 484         && b[8] == 'A' && b[9] == 'V' && b[10] == 'I' && b[11] == 0x20;
 485 }
 486
 487 static BOOL video_mpeg_filter(const BYTE *b, DWORD size)
 488 {
 489     return size > 4
 490         && !b[0] && !b[1] && b[2] == 0x01
 491         && (b[3] == 0xb3 || b[3] == 0xba);
 492 }
 493
 494 static BOOL application_postscript_filter(const BYTE *b, DWORD size)
 495 {
 496     return size > 2 && b[0] == '%' && b[1] == '!';
 497 }
 498
 499 static BOOL application_pdf_filter(const BYTE *b, DWORD size)
 500 {
 501     return size > 4 && b[0] == 0x25 && b[1] == 0x50 && b[2] == 0x44 && b[3] == 0x46;
 502 }
 503
 504 static BOOL application_xzip_filter(const BYTE *b, DWORD size)
 505 {
 506     return size > 2 && b[0] == 0x50 && b[1] == 0x4b;
 507 }
 508
 509 static BOOL application_xgzip_filter(const BYTE *b, DWORD size)
 510 {
 511     return size > 2 && b[0] == 0x1f && b[1] == 0x8b;
 512 }
 513
 514 static BOOL application_java_filter(const BYTE *b, DWORD size)
 515 {
 516     return size > 4 && b[0] == 0xca && b[1] == 0xfe && b[2] == 0xba && b[3] == 0xbe;
 517 }
 518
 519 static BOOL application_xmsdownload(const BYTE *b, DWORD size)
 520 {
 521     return size > 2 && b[0] == 'M' && b[1] == 'Z';
 522 }
 523
 524 static BOOL text_plain_filter(const BYTE *b, DWORD size)
 525 {
 526     const BYTE *ptr;
 527
 528     for(ptr = b; ptr < b+size-1; ptr++) {
 529         if(*ptr < 0x20 && *ptr != '\n' && *ptr != '\r' && *ptr != '\t')
 530             return FALSE;
 531     }
 532
 533     return TRUE;
 534 }
 535
 536 static BOOL application_octet_stream_filter(const BYTE *b, DWORD size)
 537 {
 538     return TRUE;
 539 }
 540
 541 /***********************************************************************
 542  *           FindMimeFromData (URLMON.@)
 543  *
 544  * Determines the Multipurpose Internet Mail Extensions (MIME) type from the data provided.
 545  */
 546 HRESULT WINAPI FindMimeFromData(LPBC pBC, LPCWSTR pwzUrl, LPVOID pBuffer,
 547         DWORD cbSize, LPCWSTR pwzMimeProposed, DWORD dwMimeFlags,
 548         LPWSTR* ppwzMimeOut, DWORD dwReserved)
 549 {
 550     TRACE("(%p,%s,%p,%d,%s,0x%x,%p,0x%x)\n", pBC, debugstr_w(pwzUrl), pBuffer, cbSize,
 551             debugstr_w(pwzMimeProposed), dwMimeFlags, ppwzMimeOut, dwReserved);
 552
 553     if(dwMimeFlags)
 554         WARN("dwMimeFlags=%08x\n", dwMimeFlags);
 555     if(dwReserved)
 556         WARN("dwReserved=%d\n", dwReserved);
 557
 558     /* pBC seams to not be used */
 559
 560     if(!ppwzMimeOut || (!pwzUrl && !pBuffer))
 561         return E_INVALIDARG;
 562
 563     if(pwzMimeProposed && (!pBuffer || (pBuffer && !cbSize))) {
 564         DWORD len;
 565
 566         if(!pwzMimeProposed)
 567             return E_FAIL;
 568
 569         len = strlenW(pwzMimeProposed)+1;
 570         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 571         memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 572         return S_OK;
 573     }
 574
 575     if(pBuffer) {
 576         const BYTE *buf = pBuffer;
 577         DWORD len;
 578         LPCWSTR ret = NULL;
 579         int i;
 580
 581         static const WCHAR wszTextHtml[] = {'t','e','x','t','/','h','t','m','l',0};
 582         static const WCHAR wszTextRichtext[] = {'t','e','x','t','/','r','i','c','h','t','e','x','t',0};
 583         static const WCHAR wszAudioWav[] = {'a','u','d','i','o','/','w','a','v',0};
 584         static const WCHAR wszImageGif[] = {'i','m','a','g','e','/','g','i','f',0};
 585         static const WCHAR wszImagePjpeg[] = {'i','m','a','g','e','/','p','j','p','e','g',0};
 586         static const WCHAR wszImageTiff[] = {'i','m','a','g','e','/','t','i','f','f',0};
 587         static const WCHAR wszImageXPng[] = {'i','m','a','g','e','/','x','-','p','n','g',0};
 588         static const WCHAR wszImageBmp[] = {'i','m','a','g','e','/','b','m','p',0};
 589         static const WCHAR wszVideoAvi[] = {'v','i','d','e','o','/','a','v','i',0};
 590         static const WCHAR wszVideoMpeg[] = {'v','i','d','e','o','/','m','p','e','g',0};
 591         static const WCHAR wszAppPostscript[] =
 592             {'a','p','p','l','i','c','a','t','i','o','n','/','p','o','s','t','s','c','r','i','p','t',0};
 593         static const WCHAR wszAppPdf[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 594             'p','d','f',0};
 595         static const WCHAR wszAppXZip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 596             'x','-','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 597         static const WCHAR wszAppXGzip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 598             'x','-','g','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 599         static const WCHAR wszAppJava[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 600             'j','a','v','a',0};
 601         static const WCHAR wszAppXMSDownload[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 602             'x','-','m','s','d','o','w','n','l','o','a','d',0};
 603         static const WCHAR wszTextPlain[] = {'t','e','x','t','/','p','l','a','i','n','\0'};
 604         static const WCHAR wszAppOctetStream[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 605             'o','c','t','e','t','-','s','t','r','e','a','m','\0'};
 606
 607         static const struct {
 608             LPCWSTR mime;
 609             BOOL (*filter)(const BYTE *,DWORD);
 610         } mime_filters[] = {
 611             {wszTextHtml,       text_html_filter},
 612             {wszTextRichtext,   text_richtext_filter},
 613             {wszAudioWav,       audio_wav_filter},
 614             {wszImageGif,       image_gif_filter},
 615             {wszImagePjpeg,     image_pjpeg_filter},
 616             {wszImageTiff,      image_tiff_filter},
 617             {wszImageXPng,      image_xpng_filter},
 618             {wszImageBmp,       image_bmp_filter},
 619             {wszVideoAvi,       video_avi_filter},
 620             {wszVideoMpeg,      video_mpeg_filter},
 621             {wszAppPostscript,  application_postscript_filter},
 622             {wszAppPdf,         application_pdf_filter},
 623             {wszAppXZip,        application_xzip_filter},
 624             {wszAppXGzip,       application_xgzip_filter},
 625             {wszAppJava,        application_java_filter},
 626             {wszAppXMSDownload, application_xmsdownload},
 627             {wszTextPlain,      text_plain_filter},
 628             {wszAppOctetStream, application_octet_stream_filter}
 629         };
 630
 631         if(!cbSize)
 632             return E_FAIL;
 633
 634         if(pwzMimeProposed && strcmpW(pwzMimeProposed, wszAppOctetStream)) {
 635             for(i=0; i < sizeof(mime_filters)/sizeof(*mime_filters); i++) {
 636                 if(!strcmpW(pwzMimeProposed, mime_filters[i].mime))
 637                     break;
 638             }
 639
 640             if(i == sizeof(mime_filters)/sizeof(*mime_filters)
 641                     || mime_filters[i].filter(buf, cbSize)) {
 642                 len = strlenW(pwzMimeProposed)+1;
 643                 *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 644                 memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 645                 return S_OK;
 646             }
 647         }
 648
 649         i=0;
 650         while(!ret) {
 651             if(mime_filters[i].filter(buf, cbSize))
 652                 ret = mime_filters[i].mime;
 653             i++;
 654         }
 655
 656         TRACE("found %s for data\n"
 657               "%02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 658               debugstr_w(ret), buf[0],buf[1],buf[2],buf[3], buf[4],buf[5],buf[6],buf[7],
 659               buf[8],buf[9],buf[10],buf[11], buf[12],buf[13],buf[14],buf[15]);
 660
 661         if(pwzMimeProposed) {
 662             if(i == sizeof(mime_filters)/sizeof(*mime_filters))
 663                 ret = pwzMimeProposed;
 664
 665             /* text/html is a special case */
 666             if(!strcmpW(pwzMimeProposed, wszTextHtml) && !strcmpW(ret, wszTextPlain))
 667                 ret = wszTextHtml;
 668         }
 669
 670         len = strlenW(ret)+1;
 671         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 672         memcpy(*ppwzMimeOut, ret, len*sizeof(WCHAR));
 673         return S_OK;
 674     }
 675
 676     if(pwzUrl) {
 677         HKEY hkey;
 678         DWORD res, size;
 679         LPCWSTR ptr;
 680         WCHAR mime[64];
 681
 682         static const WCHAR wszContentType[] =
 683                 {'C','o','n','t','e','n','t',' ','T','y','p','e','\0'};
 684
 685         ptr = strrchrW(pwzUrl, '.');
 686         if(!ptr)
 687             return E_FAIL;
 688
 689         res = RegOpenKeyW(HKEY_CLASSES_ROOT, ptr, &hkey);
 690         if(res != ERROR_SUCCESS)
 691             return HRESULT_FROM_WIN32(res);
 692
 693         size = sizeof(mime);
 694         res = RegQueryValueExW(hkey, wszContentType, NULL, NULL, (LPBYTE)mime, &size);
 695         RegCloseKey(hkey);
 696         if(res != ERROR_SUCCESS)
 697             return HRESULT_FROM_WIN32(res);
 698
 699         *ppwzMimeOut = CoTaskMemAlloc(size);
 700         memcpy(*ppwzMimeOut, mime, size);
 701         return S_OK;
 702     }
 703
 704     return E_FAIL;
 705 }
 706
 707 /***********************************************************************
 708  *           GetClassFileOrMime (URLMON.@)
 709  *
 710  * Determines the class ID from the bind context, file name or MIME type.
 711  */
 712 HRESULT WINAPI GetClassFileOrMime(LPBC pBC, LPCWSTR pszFilename,
 713         LPVOID pBuffer, DWORD cbBuffer, LPCWSTR pszMimeType, DWORD dwReserved,
 714         CLSID *pclsid)
 715 {
 716     FIXME("(%p, %s, %p, %d, %p, 0x%08x, %p): stub\n", pBC,
 717         debugstr_w(pszFilename), pBuffer, cbBuffer, debugstr_w(pszMimeType),
 718         dwReserved, pclsid);
 719     return E_NOTIMPL;
 720 }
 721
 722 /***********************************************************************
 723  * Extract (URLMON.@)
 724  */
 725 HRESULT WINAPI Extract(void *dest, LPCSTR szCabName)
 726 {
 727     HRESULT (WINAPI *pExtract)(void *, LPCSTR);
 728
 729     if (!hCabinet)
 730         hCabinet = LoadLibraryA("cabinet.dll");
 731
 732     if (!hCabinet) return HRESULT_FROM_WIN32(GetLastError());
 733     pExtract = (void *)GetProcAddress(hCabinet, "Extract");
 734     if (!pExtract) return HRESULT_FROM_WIN32(GetLastError());
 735
 736     return pExtract(dest, szCabName);
 737 }