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 #include "urlmon_main.h"
  24
  25 #include "winreg.h"
  26
  27 #define NO_SHLWAPI_REG
  28 #include "shlwapi.h"
  29 #include "wine/debug.h"
  30
  31 #include "urlmon.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  34
  35 LONG URLMON_refCount = 0;
  36
  37 HINSTANCE URLMON_hInstance = 0;
  38 static HMODULE hCabinet = NULL;
  39
  40 static void init_session(BOOL);
  41
  42 /***********************************************************************
  43  *              DllMain (URLMON.init)
  44  */
  45 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
  46 {
  47     TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, fImpLoad);
  48
  49     switch(fdwReason) {
  50     case DLL_PROCESS_ATTACH:
  51         DisableThreadLibraryCalls(hinstDLL);
  52         URLMON_hInstance = hinstDLL;
  53         init_session(TRUE);
  54         break;
  55
  56     case DLL_PROCESS_DETACH:
  57         if (hCabinet)
  58             FreeLibrary(hCabinet);
  59         hCabinet = NULL;
  60         init_session(FALSE);
  61         URLMON_hInstance = 0;
  62         break;
  63     }
  64     return TRUE;
  65 }
  66
  67
  68 /***********************************************************************
  69  *              DllInstall (URLMON.@)
  70  */
  71 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
  72 {
  73   FIXME("(%s, %s): stub\n", bInstall?"TRUE":"FALSE",
  74         debugstr_w(cmdline));
  75
  76   return S_OK;
  77 }
  78
  79 /***********************************************************************
  80  *              DllCanUnloadNow (URLMON.@)
  81  */
  82 HRESULT WINAPI DllCanUnloadNow(void)
  83 {
  84     return URLMON_refCount != 0 ? S_FALSE : S_OK;
  85 }
  86
  87
  88
  89 /******************************************************************************
  90  * Urlmon ClassFactory
  91  */
  92 typedef struct {
  93     const IClassFactoryVtbl *lpClassFactoryVtbl;
  94
  95     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  96 } ClassFactory;
  97
  98 #define CLASSFACTORY(x)  ((IClassFactory*)  &(x)->lpClassFactoryVtbl)
  99
 100 static HRESULT WINAPI CF_QueryInterface(IClassFactory *iface, REFIID riid, LPVOID *ppv)
 101 {
 102     *ppv = NULL;
 103
 104     if(IsEqualGUID(riid, &IID_IUnknown)) {
 105         TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
 106         *ppv = iface;
 107     }else if(IsEqualGUID(riid, &IID_IClassFactory)) {
 108         TRACE("(%p)->(IID_IClassFactory %p)\n", iface, ppv);
 109         *ppv = iface;
 110     }
 111
 112     if(*ppv) {
 113         IUnknown_AddRef((IUnknown*)*ppv);
 114         return S_OK;
 115     }
 116
 117     WARN("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ppv);
 118     return E_NOINTERFACE;
 119 }
 120
 121 static ULONG WINAPI CF_AddRef(IClassFactory *iface)
 122 {
 123     URLMON_LockModule();
 124     return 2;
 125 }
 126
 127 static ULONG WINAPI CF_Release(IClassFactory *iface)
 128 {
 129     URLMON_UnlockModule();
 130     return 1;
 131 }
 132
 133
 134 static HRESULT WINAPI CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
 135                                         REFIID riid, LPVOID *ppobj)
 136 {
 137     ClassFactory *This = (ClassFactory*)iface;
 138     HRESULT hres;
 139     LPUNKNOWN punk;
 140
 141     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 142
 143     *ppobj = NULL;
 144     if(SUCCEEDED(hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk))) {
 145         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 146         IUnknown_Release(punk);
 147     }
 148     return hres;
 149 }
 150
 151 static HRESULT WINAPI CF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 152 {
 153     TRACE("(%d)\n", dolock);
 154
 155     if (dolock)
 156            URLMON_LockModule();
 157     else
 158            URLMON_UnlockModule();
 159
 160     return S_OK;
 161 }
 162
 163 static const IClassFactoryVtbl ClassFactoryVtbl =
 164 {
 165     CF_QueryInterface,
 166     CF_AddRef,
 167     CF_Release,
 168     CF_CreateInstance,
 169     CF_LockServer
 170 };
 171
 172 static const ClassFactory FileProtocolCF =
 173     { &ClassFactoryVtbl, FileProtocol_Construct};
 174 static const ClassFactory FtpProtocolCF =
 175     { &ClassFactoryVtbl, FtpProtocol_Construct};
 176 static const ClassFactory HttpProtocolCF =
 177     { &ClassFactoryVtbl, HttpProtocol_Construct};
 178 static const ClassFactory HttpSProtocolCF =
 179     { &ClassFactoryVtbl, HttpSProtocol_Construct};
 180 static const ClassFactory MkProtocolCF =
 181     { &ClassFactoryVtbl, MkProtocol_Construct};
 182 static const ClassFactory SecurityManagerCF =
 183     { &ClassFactoryVtbl, SecManagerImpl_Construct};
 184 static const ClassFactory ZoneManagerCF =
 185     { &ClassFactoryVtbl, ZoneMgrImpl_Construct};
 186
 187 struct object_creation_info
 188 {
 189     const CLSID *clsid;
 190     IClassFactory *cf;
 191     LPCWSTR protocol;
 192 };
 193
 194 static const WCHAR wszFile[] = {'f','i','l','e',0};
 195 static const WCHAR wszFtp[]  = {'f','t','p',0};
 196 static const WCHAR wszHttp[] = {'h','t','t','p',0};
 197 static const WCHAR wszHttps[] = {'h','t','t','p','s',0};
 198 static const WCHAR wszMk[]   = {'m','k',0};
 199
 200 static const struct object_creation_info object_creation[] =
 201 {
 202     { &CLSID_FileProtocol,            CLASSFACTORY(&FileProtocolCF),    wszFile },
 203     { &CLSID_FtpProtocol,             CLASSFACTORY(&FtpProtocolCF),     wszFtp  },
 204     { &CLSID_HttpProtocol,            CLASSFACTORY(&HttpProtocolCF),    wszHttp },
 205     { &CLSID_HttpSProtocol,           CLASSFACTORY(&HttpSProtocolCF),   wszHttps },
 206     { &CLSID_MkProtocol,              CLASSFACTORY(&MkProtocolCF),      wszMk },
 207     { &CLSID_InternetSecurityManager, CLASSFACTORY(&SecurityManagerCF), NULL    },
 208     { &CLSID_InternetZoneManager,     CLASSFACTORY(&ZoneManagerCF),     NULL    }
 209 };
 210
 211 static void init_session(BOOL init)
 212 {
 213     IInternetSession *session;
 214     int i;
 215
 216     CoInternetGetSession(0, &session, 0);
 217
 218     for(i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++) {
 219         if(object_creation[i].protocol) {
 220             if(init)
 221             {
 222                 IInternetSession_RegisterNameSpace(session, object_creation[i].cf,
 223                         object_creation[i].clsid, object_creation[i].protocol, 0, NULL, 0);
 224                 /* make sure that the AddRef on the class factory doesn't keep us loaded */
 225                 URLMON_UnlockModule();
 226             }
 227             else
 228             {
 229                 /* make sure that the Release on the class factory doesn't unload us */
 230                 URLMON_LockModule();
 231                 IInternetSession_UnregisterNameSpace(session, object_creation[i].cf,
 232                         object_creation[i].protocol);
 233             }
 234         }
 235     }
 236
 237     IInternetSession_Release(session);
 238 }
 239
 240 /*******************************************************************************
 241  * DllGetClassObject [URLMON.@]
 242  * Retrieves class object from a DLL object
 243  *
 244  * NOTES
 245  *    Docs say returns STDAPI
 246  *
 247  * PARAMS
 248  *    rclsid [I] CLSID for the class object
 249  *    riid   [I] Reference to identifier of interface for class object
 250  *    ppv    [O] Address of variable to receive interface pointer for riid
 251  *
 252  * RETURNS
 253  *    Success: S_OK
 254  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 255  *             E_UNEXPECTED
 256  */
 257
 258 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 259 {
 260     int i;
 261
 262     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 263
 264     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 265     {
 266         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 267             return IClassFactory_QueryInterface(object_creation[i].cf, riid, ppv);
 268     }
 269
 270     FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 271     return CLASS_E_CLASSNOTAVAILABLE;
 272 }
 273
 274
 275 /***********************************************************************
 276  *              DllRegisterServerEx (URLMON.@)
 277  */
 278 HRESULT WINAPI DllRegisterServerEx(void)
 279 {
 280     FIXME("(void): stub\n");
 281
 282     return E_FAIL;
 283 }
 284
 285 /**************************************************************************
 286  *                 UrlMkSetSessionOption (URLMON.@)
 287  */
 288 HRESULT WINAPI UrlMkSetSessionOption(DWORD dwOption, LPVOID pBuffer, DWORD dwBufferLength,
 289                                         DWORD Reserved)
 290 {
 291     FIXME("(%#x, %p, %#x): stub\n", dwOption, pBuffer, dwBufferLength);
 292
 293     return S_OK;
 294 }
 295
 296 static const CHAR Agent[] = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)";
 297
 298 /**************************************************************************
 299  *                 ObtainUserAgentString (URLMON.@)
 300  */
 301 HRESULT WINAPI ObtainUserAgentString(DWORD dwOption, LPSTR pcszUAOut, DWORD *cbSize)
 302 {
 303     FIXME("(%d, %p, %p): stub\n", dwOption, pcszUAOut, cbSize);
 304
 305     if (pcszUAOut == NULL || cbSize == NULL)
 306         return E_INVALIDARG;
 307
 308     if (*cbSize < sizeof(Agent))
 309     {
 310         *cbSize = sizeof(Agent);
 311         return E_OUTOFMEMORY;
 312     }
 313
 314     if (sizeof(Agent) < *cbSize)
 315         *cbSize = sizeof(Agent);
 316     lstrcpynA(pcszUAOut, Agent, *cbSize);
 317
 318     return S_OK;
 319 }
 320
 321 /**************************************************************************
 322  *                 IsValidURL (URLMON.@)
 323  *
 324  * Determines if a specified string is a valid URL.
 325  *
 326  * PARAMS
 327  *  pBC        [I] ignored, must be NULL.
 328  *  szURL      [I] string that represents the URL in question.
 329  *  dwReserved [I] reserved and must be zero.
 330  *
 331  * RETURNS
 332  *  Success: S_OK.
 333  *  Failure: S_FALSE.
 334  *  returns E_INVALIDARG if one or more of the args is invalid.
 335  *
 336  * TODO:
 337  *  test functionality against windows to see what a valid URL is.
 338  */
 339 HRESULT WINAPI IsValidURL(LPBC pBC, LPCWSTR szURL, DWORD dwReserved)
 340 {
 341     FIXME("(%p, %s, %d): stub\n", pBC, debugstr_w(szURL), dwReserved);
 342
 343     if (pBC != NULL || dwReserved != 0)
 344         return E_INVALIDARG;
 345
 346     return S_OK;
 347 }
 348
 349 /**************************************************************************
 350  *                 FaultInIEFeature (URLMON.@)
 351  *
 352  *  Undocumented.  Appears to be used by native shdocvw.dll.
 353  */
 354 HRESULT WINAPI FaultInIEFeature( HWND hwnd, uCLSSPEC * pClassSpec,
 355                                  QUERYCONTEXT *pQuery, DWORD flags )
 356 {
 357     FIXME("%p %p %p %08x\n", hwnd, pClassSpec, pQuery, flags);
 358     return E_NOTIMPL;
 359 }
 360
 361 /**************************************************************************
 362  *                 CoGetClassObjectFromURL (URLMON.@)
 363  */
 364 HRESULT WINAPI CoGetClassObjectFromURL( REFCLSID rclsid, LPCWSTR szCodeURL, DWORD dwFileVersionMS,
 365                                         DWORD dwFileVersionLS, LPCWSTR szContentType,
 366                                         LPBINDCTX pBindCtx, DWORD dwClsContext, LPVOID pvReserved,
 367                                         REFIID riid, LPVOID *ppv )
 368 {
 369     FIXME("(%s %s %d %d %s %p %d %p %s %p) Stub!\n", debugstr_guid(rclsid), debugstr_w(szCodeURL),
 370         dwFileVersionMS, dwFileVersionLS, debugstr_w(szContentType), pBindCtx, dwClsContext, pvReserved,
 371         debugstr_guid(riid), ppv);
 372     return E_NOINTERFACE;
 373 }
 374
 375 /***********************************************************************
 376  *           ReleaseBindInfo (URLMON.@)
 377  *
 378  * Release the resources used by the specified BINDINFO structure.
 379  *
 380  * PARAMS
 381  *  pbindinfo [I] BINDINFO to release.
 382  *
 383  * RETURNS
 384  *  Nothing.
 385  */
 386 void WINAPI ReleaseBindInfo(BINDINFO* pbindinfo)
 387 {
 388     DWORD size;
 389
 390     TRACE("(%p)\n", pbindinfo);
 391
 392     if(!pbindinfo || !(size = pbindinfo->cbSize))
 393         return;
 394
 395     CoTaskMemFree(pbindinfo->szExtraInfo);
 396     ReleaseStgMedium(&pbindinfo->stgmedData);
 397
 398     if(offsetof(BINDINFO, szExtraInfo) < size)
 399         CoTaskMemFree(pbindinfo->szCustomVerb);
 400
 401
 402     if(pbindinfo->pUnk && offsetof(BINDINFO, pUnk) < size)
 403         IUnknown_Release(pbindinfo->pUnk);
 404
 405     memset(pbindinfo, 0, size);
 406     pbindinfo->cbSize = size;
 407 }
 408
 409 /***********************************************************************
 410  *           CopyStgMedium (URLMON.@)
 411  */
 412 HRESULT WINAPI CopyStgMedium(const STGMEDIUM *src, STGMEDIUM *dst)
 413 {
 414     TRACE("(%p %p)\n", src, dst);
 415
 416     if(!src || !dst)
 417         return E_POINTER;
 418
 419     memcpy(dst, src, sizeof(STGMEDIUM));
 420
 421     switch(dst->tymed) {
 422     case TYMED_NULL:
 423         break;
 424     case TYMED_ISTREAM:
 425         if(dst->u.pstm)
 426             IStream_AddRef(dst->u.pstm);
 427         break;
 428     case TYMED_ISTORAGE:
 429         if(dst->u.pstg)
 430             IStorage_AddRef(dst->u.pstg);
 431         break;
 432     default:
 433         FIXME("Unimplemented tymed %d\n", src->tymed);
 434     }
 435
 436     if(dst->pUnkForRelease)
 437         IUnknown_AddRef(dst->pUnkForRelease);
 438
 439     return S_OK;
 440 }
 441
 442 static BOOL text_richtext_filter(const BYTE *b, DWORD size)
 443 {
 444     return size > 5 && !memcmp(b, "{\\rtf", 5);
 445 }
 446
 447 static BOOL text_html_filter(const BYTE *b, DWORD size)
 448 {
 449     int i;
 450
 451     if(size < 5)
 452         return FALSE;
 453
 454     for(i=0; i < size-5; i++) {
 455         if(b[i] == '<'
 456            && (b[i+1] == 'h' || b[i+1] == 'H')
 457            && (b[i+2] == 't' || b[i+2] == 'T')
 458            && (b[i+3] == 'm' || b[i+3] == 'M')
 459            && (b[i+4] == 'l' || b[i+4] == 'L'))
 460             return TRUE;
 461     }
 462
 463     return FALSE;
 464 }
 465
 466 static BOOL audio_wav_filter(const BYTE *b, DWORD size)
 467 {
 468     return size > 12
 469         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 470         && b[8] == 'W' && b[9] == 'A' && b[10] == 'V' && b[11] == 'E';
 471 }
 472
 473 static BOOL image_gif_filter(const BYTE *b, DWORD size)
 474 {
 475     return size >= 6
 476         && (b[0] == 'G' || b[0] == 'g')
 477         && (b[1] == 'I' || b[1] == 'i')
 478         && (b[2] == 'F' || b[2] == 'f')
 479         &&  b[3] == '8'
 480         && (b[4] == '7' || b[4] == '9')
 481         && (b[5] == 'A' || b[5] == 'a');
 482 }
 483
 484 static BOOL image_pjpeg_filter(const BYTE *b, DWORD size)
 485 {
 486     return size > 2 && b[0] == 0xff && b[1] == 0xd8;
 487 }
 488
 489 static BOOL image_tiff_filter(const BYTE *b, DWORD size)
 490 {
 491     return size > 2 && b[0] == 0x4d && b[1] == 0x4d;
 492 }
 493
 494 static BOOL image_xpng_filter(const BYTE *b, DWORD size)
 495 {
 496     static const BYTE xpng_header[] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
 497     return size > sizeof(xpng_header) && !memcmp(b, xpng_header, sizeof(xpng_header));
 498 }
 499
 500 static BOOL image_bmp_filter(const BYTE *b, DWORD size)
 501 {
 502     return size >= 14
 503         && b[0] == 0x42 && b[1] == 0x4d
 504         && *(const DWORD *)(b+6) == 0;
 505 }
 506
 507 static BOOL video_avi_filter(const BYTE *b, DWORD size)
 508 {
 509     return size > 12
 510         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 511         && b[8] == 'A' && b[9] == 'V' && b[10] == 'I' && b[11] == 0x20;
 512 }
 513
 514 static BOOL video_mpeg_filter(const BYTE *b, DWORD size)
 515 {
 516     return size > 4
 517         && !b[0] && !b[1] && b[2] == 0x01
 518         && (b[3] == 0xb3 || b[3] == 0xba);
 519 }
 520
 521 static BOOL application_postscript_filter(const BYTE *b, DWORD size)
 522 {
 523     return size > 2 && b[0] == '%' && b[1] == '!';
 524 }
 525
 526 static BOOL application_pdf_filter(const BYTE *b, DWORD size)
 527 {
 528     return size > 4 && b[0] == 0x25 && b[1] == 0x50 && b[2] == 0x44 && b[3] == 0x46;
 529 }
 530
 531 static BOOL application_xzip_filter(const BYTE *b, DWORD size)
 532 {
 533     return size > 2 && b[0] == 0x50 && b[1] == 0x4b;
 534 }
 535
 536 static BOOL application_xgzip_filter(const BYTE *b, DWORD size)
 537 {
 538     return size > 2 && b[0] == 0x1f && b[1] == 0x8b;
 539 }
 540
 541 static BOOL application_java_filter(const BYTE *b, DWORD size)
 542 {
 543     return size > 4 && b[0] == 0xca && b[1] == 0xfe && b[2] == 0xba && b[3] == 0xbe;
 544 }
 545
 546 static BOOL application_xmsdownload(const BYTE *b, DWORD size)
 547 {
 548     return size > 2 && b[0] == 'M' && b[1] == 'Z';
 549 }
 550
 551 static BOOL text_plain_filter(const BYTE *b, DWORD size)
 552 {
 553     const BYTE *ptr;
 554
 555     for(ptr = b; ptr < b+size-1; ptr++) {
 556         if(*ptr < 0x20 && *ptr != '\n' && *ptr != '\r' && *ptr != '\t')
 557             return FALSE;
 558     }
 559
 560     return TRUE;
 561 }
 562
 563 static BOOL application_octet_stream_filter(const BYTE *b, DWORD size)
 564 {
 565     return TRUE;
 566 }
 567
 568 /***********************************************************************
 569  *           FindMimeFromData (URLMON.@)
 570  *
 571  * Determines the Multipurpose Internet Mail Extensions (MIME) type from the data provided.
 572  */
 573 HRESULT WINAPI FindMimeFromData(LPBC pBC, LPCWSTR pwzUrl, LPVOID pBuffer,
 574         DWORD cbSize, LPCWSTR pwzMimeProposed, DWORD dwMimeFlags,
 575         LPWSTR* ppwzMimeOut, DWORD dwReserved)
 576 {
 577     TRACE("(%p,%s,%p,%d,%s,0x%x,%p,0x%x)\n", pBC, debugstr_w(pwzUrl), pBuffer, cbSize,
 578             debugstr_w(pwzMimeProposed), dwMimeFlags, ppwzMimeOut, dwReserved);
 579
 580     if(dwMimeFlags)
 581         WARN("dwMimeFlags=%08x\n", dwMimeFlags);
 582     if(dwReserved)
 583         WARN("dwReserved=%d\n", dwReserved);
 584
 585     /* pBC seams to not be used */
 586
 587     if(!ppwzMimeOut || (!pwzUrl && !pBuffer))
 588         return E_INVALIDARG;
 589
 590     if(pwzMimeProposed && (!pBuffer || (pBuffer && !cbSize))) {
 591         DWORD len;
 592
 593         if(!pwzMimeProposed)
 594             return E_FAIL;
 595
 596         len = strlenW(pwzMimeProposed)+1;
 597         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 598         memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 599         return S_OK;
 600     }
 601
 602     if(pBuffer) {
 603         const BYTE *buf = pBuffer;
 604         DWORD len;
 605         LPCWSTR ret = NULL;
 606         int i;
 607
 608         static const WCHAR wszTextHtml[] = {'t','e','x','t','/','h','t','m','l',0};
 609         static const WCHAR wszTextRichtext[] = {'t','e','x','t','/','r','i','c','h','t','e','x','t',0};
 610         static const WCHAR wszAudioWav[] = {'a','u','d','i','o','/','w','a','v',0};
 611         static const WCHAR wszImageGif[] = {'i','m','a','g','e','/','g','i','f',0};
 612         static const WCHAR wszImagePjpeg[] = {'i','m','a','g','e','/','p','j','p','e','g',0};
 613         static const WCHAR wszImageTiff[] = {'i','m','a','g','e','/','t','i','f','f',0};
 614         static const WCHAR wszImageXPng[] = {'i','m','a','g','e','/','x','-','p','n','g',0};
 615         static const WCHAR wszImageBmp[] = {'i','m','a','g','e','/','b','m','p',0};
 616         static const WCHAR wszVideoAvi[] = {'v','i','d','e','o','/','a','v','i',0};
 617         static const WCHAR wszVideoMpeg[] = {'v','i','d','e','o','/','m','p','e','g',0};
 618         static const WCHAR wszAppPostscript[] =
 619             {'a','p','p','l','i','c','a','t','i','o','n','/','p','o','s','t','s','c','r','i','p','t',0};
 620         static const WCHAR wszAppPdf[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 621             'p','d','f',0};
 622         static const WCHAR wszAppXZip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 623             'x','-','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 624         static const WCHAR wszAppXGzip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 625             'x','-','g','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 626         static const WCHAR wszAppJava[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 627             'j','a','v','a',0};
 628         static const WCHAR wszAppXMSDownload[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 629             'x','-','m','s','d','o','w','n','l','o','a','d',0};
 630         static const WCHAR wszTextPlain[] = {'t','e','x','t','/','p','l','a','i','n','\0'};
 631         static const WCHAR wszAppOctetStream[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 632             'o','c','t','e','t','-','s','t','r','e','a','m','\0'};
 633
 634         static const struct {
 635             LPCWSTR mime;
 636             BOOL (*filter)(const BYTE *,DWORD);
 637         } mime_filters[] = {
 638             {wszTextHtml,       text_html_filter},
 639             {wszTextRichtext,   text_richtext_filter},
 640          /* {wszAudioXAiff,     audio_xaiff_filter}, */
 641          /* {wszAudioBasic,     audio_basic_filter}, */
 642             {wszAudioWav,       audio_wav_filter},
 643             {wszImageGif,       image_gif_filter},
 644             {wszImagePjpeg,     image_pjpeg_filter},
 645             {wszImageTiff,      image_tiff_filter},
 646             {wszImageXPng,      image_xpng_filter},
 647          /* {wszImageXBitmap,   image_xbitmap_filter}, */
 648             {wszImageBmp,       image_bmp_filter},
 649          /* {wszImageXJg,       image_xjg_filter}, */
 650          /* {wszImageXEmf,      image_xemf_filter}, */
 651          /* {wszImageXWmf,      image_xwmf_filter}, */
 652             {wszVideoAvi,       video_avi_filter},
 653             {wszVideoMpeg,      video_mpeg_filter},
 654             {wszAppPostscript,  application_postscript_filter},
 655          /* {wszAppBase64,      application_base64_filter}, */
 656          /* {wszAppMacbinhex40, application_macbinhex40_filter}, */
 657             {wszAppPdf,         application_pdf_filter},
 658          /* {wszAppXCompressed, application_xcompressed_filter}, */
 659             {wszAppXZip,        application_xzip_filter},
 660             {wszAppXGzip,       application_xgzip_filter},
 661             {wszAppJava,        application_java_filter},
 662             {wszAppXMSDownload, application_xmsdownload},
 663             {wszTextPlain,      text_plain_filter},
 664             {wszAppOctetStream, application_octet_stream_filter}
 665         };
 666
 667         if(!cbSize)
 668             return E_FAIL;
 669
 670         if(pwzMimeProposed && strcmpW(pwzMimeProposed, wszAppOctetStream)) {
 671             for(i=0; i < sizeof(mime_filters)/sizeof(*mime_filters); i++) {
 672                 if(!strcmpW(pwzMimeProposed, mime_filters[i].mime))
 673                     break;
 674             }
 675
 676             if(i == sizeof(mime_filters)/sizeof(*mime_filters)
 677                     || mime_filters[i].filter(buf, cbSize)) {
 678                 len = strlenW(pwzMimeProposed)+1;
 679                 *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 680                 memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 681                 return S_OK;
 682             }
 683         }
 684
 685         i=0;
 686         while(!ret) {
 687             if(mime_filters[i].filter(buf, cbSize))
 688                 ret = mime_filters[i].mime;
 689             i++;
 690         }
 691
 692         TRACE("found %s for data\n"
 693               "%02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 694               debugstr_w(ret), buf[0],buf[1],buf[2],buf[3], buf[4],buf[5],buf[6],buf[7],
 695               buf[8],buf[9],buf[10],buf[11], buf[12],buf[13],buf[14],buf[15]);
 696
 697         if(pwzMimeProposed) {
 698             if(i == sizeof(mime_filters)/sizeof(*mime_filters))
 699                 ret = pwzMimeProposed;
 700
 701             /* text/html is a special case */
 702             if(!strcmpW(pwzMimeProposed, wszTextHtml) && !strcmpW(ret, wszTextPlain))
 703                 ret = wszTextHtml;
 704         }
 705
 706         len = strlenW(ret)+1;
 707         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 708         memcpy(*ppwzMimeOut, ret, len*sizeof(WCHAR));
 709         return S_OK;
 710     }
 711
 712     if(pwzUrl) {
 713         HKEY hkey;
 714         DWORD res, size;
 715         LPCWSTR ptr;
 716         WCHAR mime[64];
 717
 718         static const WCHAR wszContentType[] =
 719                 {'C','o','n','t','e','n','t',' ','T','y','p','e','\0'};
 720
 721         ptr = strrchrW(pwzUrl, '.');
 722         if(!ptr)
 723             return E_FAIL;
 724
 725         res = RegOpenKeyW(HKEY_CLASSES_ROOT, ptr, &hkey);
 726         if(res != ERROR_SUCCESS)
 727             return HRESULT_FROM_WIN32(res);
 728
 729         size = sizeof(mime);
 730         res = RegQueryValueExW(hkey, wszContentType, NULL, NULL, (LPBYTE)mime, &size);
 731         RegCloseKey(hkey);
 732         if(res != ERROR_SUCCESS)
 733             return HRESULT_FROM_WIN32(res);
 734
 735         *ppwzMimeOut = CoTaskMemAlloc(size);
 736         memcpy(*ppwzMimeOut, mime, size);
 737         return S_OK;
 738     }
 739
 740     return E_FAIL;
 741 }
 742
 743 /***********************************************************************
 744  *           GetClassFileOrMime (URLMON.@)
 745  *
 746  * Determines the class ID from the bind context, file name or MIME type.
 747  */
 748 HRESULT WINAPI GetClassFileOrMime(LPBC pBC, LPCWSTR pszFilename,
 749         LPVOID pBuffer, DWORD cbBuffer, LPCWSTR pszMimeType, DWORD dwReserved,
 750         CLSID *pclsid)
 751 {
 752     FIXME("(%p, %s, %p, %d, %p, 0x%08x, %p): stub\n", pBC,
 753         debugstr_w(pszFilename), pBuffer, cbBuffer, debugstr_w(pszMimeType),
 754         dwReserved, pclsid);
 755     return E_NOTIMPL;
 756 }
 757
 758 /***********************************************************************
 759  * Extract (URLMON.@)
 760  */
 761 HRESULT WINAPI Extract(void *dest, LPCSTR szCabName)
 762 {
 763     HRESULT (WINAPI *pExtract)(void *, LPCSTR);
 764
 765     if (!hCabinet)
 766         hCabinet = LoadLibraryA("cabinet.dll");
 767
 768     if (!hCabinet) return HRESULT_FROM_WIN32(GetLastError());
 769     pExtract = (void *)GetProcAddress(hCabinet, "Extract");
 770     if (!pExtract) return HRESULT_FROM_WIN32(GetLastError());
 771
 772     return pExtract(dest, szCabName);
 773 }