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 static BOOL text_richtext_filter(const BYTE *b, DWORD size)
 410 {
 411     return size > 5 && !memcmp(b, "{\\rtf", 5);
 412 }
 413
 414 static BOOL text_html_filter(const BYTE *b, DWORD size)
 415 {
 416     int i;
 417
 418     if(size < 5)
 419         return FALSE;
 420
 421     for(i=0; i < size-5; i++) {
 422         if(b[i] == '<'
 423            && (b[i+1] == 'h' || b[i+1] == 'H')
 424            && (b[i+2] == 't' || b[i+2] == 'T')
 425            && (b[i+3] == 'm' || b[i+3] == 'M')
 426            && (b[i+4] == 'l' || b[i+4] == 'L'))
 427             return TRUE;
 428     }
 429
 430     return FALSE;
 431 }
 432
 433 static BOOL audio_wav_filter(const BYTE *b, DWORD size)
 434 {
 435     return size > 12
 436         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 437         && b[8] == 'W' && b[9] == 'A' && b[10] == 'V' && b[11] == 'E';
 438 }
 439
 440 static BOOL image_gif_filter(const BYTE *b, DWORD size)
 441 {
 442     return size >= 6
 443         && (b[0] == 'G' || b[0] == 'g')
 444         && (b[1] == 'I' || b[1] == 'i')
 445         && (b[2] == 'F' || b[2] == 'f')
 446         &&  b[3] == '8'
 447         && (b[4] == '7' || b[4] == '9')
 448         && (b[5] == 'A' || b[5] == 'a');
 449 }
 450
 451 static BOOL image_pjpeg_filter(const BYTE *b, DWORD size)
 452 {
 453     return size > 2 && b[0] == 0xff && b[1] == 0xd8;
 454 }
 455
 456 static BOOL image_tiff_filter(const BYTE *b, DWORD size)
 457 {
 458     return size > 2 && b[0] == 0x4d && b[1] == 0x4d;
 459 }
 460
 461 static BOOL image_xpng_filter(const BYTE *b, DWORD size)
 462 {
 463     static const BYTE xpng_header[] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
 464     return size > sizeof(xpng_header) && !memcmp(b, xpng_header, sizeof(xpng_header));
 465 }
 466
 467 static BOOL image_bmp_filter(const BYTE *b, DWORD size)
 468 {
 469     return size >= 14
 470         && b[0] == 0x42 && b[1] == 0x4d
 471         && *(const DWORD *)(b+6) == 0;
 472 }
 473
 474 static BOOL video_avi_filter(const BYTE *b, DWORD size)
 475 {
 476     return size > 12
 477         && b[0] == 'R' && b[1] == 'I' && b[2] == 'F' && b[3] == 'F'
 478         && b[8] == 'A' && b[9] == 'V' && b[10] == 'I' && b[11] == 0x20;
 479 }
 480
 481 static BOOL video_mpeg_filter(const BYTE *b, DWORD size)
 482 {
 483     return size > 4
 484         && !b[0] && !b[1] && b[2] == 0x01
 485         && (b[3] == 0xb3 || b[3] == 0xba);
 486 }
 487
 488 static BOOL application_postscript_filter(const BYTE *b, DWORD size)
 489 {
 490     return size > 2 && b[0] == '%' && b[1] == '!';
 491 }
 492
 493 static BOOL application_pdf_filter(const BYTE *b, DWORD size)
 494 {
 495     return size > 4 && b[0] == 0x25 && b[1] == 0x50 && b[2] == 0x44 && b[3] == 0x46;
 496 }
 497
 498 static BOOL application_xzip_filter(const BYTE *b, DWORD size)
 499 {
 500     return size > 2 && b[0] == 0x50 && b[1] == 0x4b;
 501 }
 502
 503 static BOOL application_xgzip_filter(const BYTE *b, DWORD size)
 504 {
 505     return size > 2 && b[0] == 0x1f && b[1] == 0x8b;
 506 }
 507
 508 static BOOL application_java_filter(const BYTE *b, DWORD size)
 509 {
 510     return size > 4 && b[0] == 0xca && b[1] == 0xfe && b[2] == 0xba && b[3] == 0xbe;
 511 }
 512
 513 static BOOL application_xmsdownload(const BYTE *b, DWORD size)
 514 {
 515     return size > 2 && b[0] == 'M' && b[1] == 'Z';
 516 }
 517
 518 static BOOL text_plain_filter(const BYTE *b, DWORD size)
 519 {
 520     const BYTE *ptr;
 521
 522     for(ptr = b; ptr < b+size-1; ptr++) {
 523         if(*ptr < 0x20 && *ptr != '\n' && *ptr != '\r' && *ptr != '\t')
 524             return FALSE;
 525     }
 526
 527     return TRUE;
 528 }
 529
 530 static BOOL application_octet_stream_filter(const BYTE *b, DWORD size)
 531 {
 532     return TRUE;
 533 }
 534
 535 /***********************************************************************
 536  *           FindMimeFromData (URLMON.@)
 537  *
 538  * Determines the Multipurpose Internet Mail Extensions (MIME) type from the data provided.
 539  */
 540 HRESULT WINAPI FindMimeFromData(LPBC pBC, LPCWSTR pwzUrl, LPVOID pBuffer,
 541         DWORD cbSize, LPCWSTR pwzMimeProposed, DWORD dwMimeFlags,
 542         LPWSTR* ppwzMimeOut, DWORD dwReserved)
 543 {
 544     TRACE("(%p,%s,%p,%d,%s,0x%x,%p,0x%x)\n", pBC, debugstr_w(pwzUrl), pBuffer, cbSize,
 545             debugstr_w(pwzMimeProposed), dwMimeFlags, ppwzMimeOut, dwReserved);
 546
 547     if(dwMimeFlags)
 548         WARN("dwMimeFlags=%08x\n", dwMimeFlags);
 549     if(dwReserved)
 550         WARN("dwReserved=%d\n", dwReserved);
 551
 552     /* pBC seams to not be used */
 553
 554     if(!ppwzMimeOut || (!pwzUrl && !pBuffer))
 555         return E_INVALIDARG;
 556
 557     if(pwzMimeProposed && (!pBuffer || (pBuffer && !cbSize))) {
 558         DWORD len;
 559
 560         if(!pwzMimeProposed)
 561             return E_FAIL;
 562
 563         len = strlenW(pwzMimeProposed)+1;
 564         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 565         memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 566         return S_OK;
 567     }
 568
 569     if(pBuffer) {
 570         const BYTE *buf = pBuffer;
 571         DWORD len;
 572         LPCWSTR ret = NULL;
 573         int i;
 574
 575         static const WCHAR wszTextHtml[] = {'t','e','x','t','/','h','t','m','l',0};
 576         static const WCHAR wszTextRichtext[] = {'t','e','x','t','/','r','i','c','h','t','e','x','t',0};
 577         static const WCHAR wszAudioWav[] = {'a','u','d','i','o','/','w','a','v',0};
 578         static const WCHAR wszImageGif[] = {'i','m','a','g','e','/','g','i','f',0};
 579         static const WCHAR wszImagePjpeg[] = {'i','m','a','g','e','/','p','j','p','e','g',0};
 580         static const WCHAR wszImageTiff[] = {'i','m','a','g','e','/','t','i','f','f',0};
 581         static const WCHAR wszImageXPng[] = {'i','m','a','g','e','/','x','-','p','n','g',0};
 582         static const WCHAR wszImageBmp[] = {'i','m','a','g','e','/','b','m','p',0};
 583         static const WCHAR wszVideoAvi[] = {'v','i','d','e','o','/','a','v','i',0};
 584         static const WCHAR wszVideoMpeg[] = {'v','i','d','e','o','/','m','p','e','g',0};
 585         static const WCHAR wszAppPostscript[] =
 586             {'a','p','p','l','i','c','a','t','i','o','n','/','p','o','s','t','s','c','r','i','p','t',0};
 587         static const WCHAR wszAppPdf[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 588             'p','d','f',0};
 589         static const WCHAR wszAppXZip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 590             'x','-','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 591         static const WCHAR wszAppXGzip[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 592             'x','-','g','z','i','p','-','c','o','m','p','r','e','s','s','e','d',0};
 593         static const WCHAR wszAppJava[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 594             'j','a','v','a',0};
 595         static const WCHAR wszAppXMSDownload[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 596             'x','-','m','s','d','o','w','n','l','o','a','d',0};
 597         static const WCHAR wszTextPlain[] = {'t','e','x','t','/','p','l','a','i','n','\0'};
 598         static const WCHAR wszAppOctetStream[] = {'a','p','p','l','i','c','a','t','i','o','n','/',
 599             'o','c','t','e','t','-','s','t','r','e','a','m','\0'};
 600
 601         static const struct {
 602             LPCWSTR mime;
 603             BOOL (*filter)(const BYTE *,DWORD);
 604         } mime_filters[] = {
 605             {wszTextHtml,       text_html_filter},
 606             {wszTextRichtext,   text_richtext_filter},
 607             {wszAudioWav,       audio_wav_filter},
 608             {wszImageGif,       image_gif_filter},
 609             {wszImagePjpeg,     image_pjpeg_filter},
 610             {wszImageTiff,      image_tiff_filter},
 611             {wszImageXPng,      image_xpng_filter},
 612             {wszImageBmp,       image_bmp_filter},
 613             {wszVideoAvi,       video_avi_filter},
 614             {wszVideoMpeg,      video_mpeg_filter},
 615             {wszAppPostscript,  application_postscript_filter},
 616             {wszAppPdf,         application_pdf_filter},
 617             {wszAppXZip,        application_xzip_filter},
 618             {wszAppXGzip,       application_xgzip_filter},
 619             {wszAppJava,        application_java_filter},
 620             {wszAppXMSDownload, application_xmsdownload},
 621             {wszTextPlain,      text_plain_filter},
 622             {wszAppOctetStream, application_octet_stream_filter}
 623         };
 624
 625         if(!cbSize)
 626             return E_FAIL;
 627
 628         if(pwzMimeProposed && strcmpW(pwzMimeProposed, wszAppOctetStream)) {
 629             for(i=0; i < sizeof(mime_filters)/sizeof(*mime_filters); i++) {
 630                 if(!strcmpW(pwzMimeProposed, mime_filters[i].mime))
 631                     break;
 632             }
 633
 634             if(i == sizeof(mime_filters)/sizeof(*mime_filters)
 635                     || mime_filters[i].filter(buf, cbSize)) {
 636                 len = strlenW(pwzMimeProposed)+1;
 637                 *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 638                 memcpy(*ppwzMimeOut, pwzMimeProposed, len*sizeof(WCHAR));
 639                 return S_OK;
 640             }
 641         }
 642
 643         i=0;
 644         while(!ret) {
 645             if(mime_filters[i].filter(buf, cbSize))
 646                 ret = mime_filters[i].mime;
 647             i++;
 648         }
 649
 650         TRACE("found %s for data\n"
 651               "%02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x  %02x %02x %02x %02x\n",
 652               debugstr_w(ret), buf[0],buf[1],buf[2],buf[3], buf[4],buf[5],buf[6],buf[7],
 653               buf[8],buf[9],buf[10],buf[11], buf[12],buf[13],buf[14],buf[15]);
 654
 655         if(pwzMimeProposed) {
 656             if(i == sizeof(mime_filters)/sizeof(*mime_filters))
 657                 ret = pwzMimeProposed;
 658
 659             /* text/html is a special case */
 660             if(!strcmpW(pwzMimeProposed, wszTextHtml) && !strcmpW(ret, wszTextPlain))
 661                 ret = wszTextHtml;
 662         }
 663
 664         len = strlenW(ret)+1;
 665         *ppwzMimeOut = CoTaskMemAlloc(len*sizeof(WCHAR));
 666         memcpy(*ppwzMimeOut, ret, len*sizeof(WCHAR));
 667         return S_OK;
 668     }
 669
 670     if(pwzUrl) {
 671         HKEY hkey;
 672         DWORD res, size;
 673         LPCWSTR ptr;
 674         WCHAR mime[64];
 675
 676         static const WCHAR wszContentType[] =
 677                 {'C','o','n','t','e','n','t',' ','T','y','p','e','\0'};
 678
 679         ptr = strrchrW(pwzUrl, '.');
 680         if(!ptr)
 681             return E_FAIL;
 682
 683         res = RegOpenKeyW(HKEY_CLASSES_ROOT, ptr, &hkey);
 684         if(res != ERROR_SUCCESS)
 685             return HRESULT_FROM_WIN32(res);
 686
 687         size = sizeof(mime);
 688         res = RegQueryValueExW(hkey, wszContentType, NULL, NULL, (LPBYTE)mime, &size);
 689         RegCloseKey(hkey);
 690         if(res != ERROR_SUCCESS)
 691             return HRESULT_FROM_WIN32(res);
 692
 693         *ppwzMimeOut = CoTaskMemAlloc(size);
 694         memcpy(*ppwzMimeOut, mime, size);
 695         return S_OK;
 696     }
 697
 698     return E_FAIL;
 699 }
 700
 701 /***********************************************************************
 702  *           GetClassFileOrMime (URLMON.@)
 703  *
 704  * Determines the class ID from the bind context, file name or MIME type.
 705  */
 706 HRESULT WINAPI GetClassFileOrMime(LPBC pBC, LPCWSTR pszFilename,
 707         LPVOID pBuffer, DWORD cbBuffer, LPCWSTR pszMimeType, DWORD dwReserved,
 708         CLSID *pclsid)
 709 {
 710     FIXME("(%p, %s, %p, %d, %p, 0x%08x, %p): stub\n", pBC,
 711         debugstr_w(pszFilename), pBuffer, cbBuffer, debugstr_w(pszMimeType),
 712         dwReserved, pclsid);
 713     return E_NOTIMPL;
 714 }
 715
 716 /***********************************************************************
 717  * Extract (URLMON.@)
 718  */
 719 HRESULT WINAPI Extract(void *dest, LPCSTR szCabName)
 720 {
 721     HRESULT (WINAPI *pExtract)(void *, LPCSTR);
 722
 723     if (!hCabinet)
 724         hCabinet = LoadLibraryA("cabinet.dll");
 725
 726     if (!hCabinet) return HRESULT_FROM_WIN32(GetLastError());
 727     pExtract = (void *)GetProcAddress(hCabinet, "Extract");
 728     if (!pExtract) return HRESULT_FROM_WIN32(GetLastError());
 729
 730     return pExtract(dest, szCabName);
 731 }