dlls/crypt32/sip.c

   1 /*
   2  * Copyright 2002 Mike McCormack for CodeWeavers
   3  * Copyright 2005-2008 Juan Lang
   4  * Copyright 2006 Paul Vriens
   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 #include <stdio.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wincrypt.h"
  27 #include "winreg.h"
  28 #include "winnls.h"
  29 #include "mssip.h"
  30 #include "winuser.h"
  31
  32 #include "wine/debug.h"
  33 #include "wine/list.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  36
  37 static const WCHAR szOID[] = {
  38     'S','o','f','t','w','a','r','e','\\',
  39     'M','i','c','r','o','s','o','f','t','\\',
  40     'C','r','y','p','t','o','g','r','a','p','h','y','\\',
  41     'O','I','D','\\',
  42     'E','n','c','o','d','i','n','g','T','y','p','e',' ','0','\\',
  43     'C','r','y','p','t','S','I','P','D','l','l', 0 };
  44
  45 static const WCHAR szPutSigned[] = {
  46     'P','u','t','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
  47 static const WCHAR szGetSigned[] = {
  48     'G','e','t','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
  49 static const WCHAR szRemoveSigned[] = {
  50     'R','e','m','o','v','e','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
  51 static const WCHAR szCreate[] = {
  52     'C','r','e','a','t','e','I','n','d','i','r','e','c','t','D','a','t','a','\\',0};
  53 static const WCHAR szVerify[] = {
  54     'V','e','r','i','f','y','I','n','d','i','r','e','c','t','D','a','t','a','\\',0};
  55 static const WCHAR szIsMyFile[] = {
  56     'I','s','M','y','F','i','l','e','T','y','p','e','\\',0};
  57 static const WCHAR szIsMyFile2[] = {
  58     'I','s','M','y','F','i','l','e','T','y','p','e','2','\\',0};
  59
  60 static const WCHAR szDllName[] = { 'D','l','l',0 };
  61 static const WCHAR szFuncName[] = { 'F','u','n','c','N','a','m','e',0 };
  62
  63 /* convert a guid to a wide character string */
  64 static void CRYPT_guid2wstr( const GUID *guid, LPWSTR wstr )
  65 {
  66     char str[40];
  67
  68     sprintf(str, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
  69            guid->Data1, guid->Data2, guid->Data3,
  70            guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
  71            guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
  72     MultiByteToWideChar( CP_ACP, 0, str, -1, wstr, 40 );
  73 }
  74
  75 /***********************************************************************
  76  *              CRYPT_SIPDeleteFunction
  77  *
  78  * Helper function for CryptSIPRemoveProvider
  79  */
  80 static LONG CRYPT_SIPDeleteFunction( const GUID *guid, LPCWSTR szKey )
  81 {
  82     WCHAR szFullKey[ 0x100 ];
  83     LONG r = ERROR_SUCCESS;
  84
  85     /* max length of szFullKey depends on our code only, so we won't overrun */
  86     lstrcpyW( szFullKey, szOID );
  87     lstrcatW( szFullKey, szKey );
  88     CRYPT_guid2wstr( guid, &szFullKey[ lstrlenW( szFullKey ) ] );
  89
  90     r = RegDeleteKeyW(HKEY_LOCAL_MACHINE, szFullKey);
  91
  92     return r;
  93 }
  94
  95 /***********************************************************************
  96  *             CryptSIPRemoveProvider (CRYPT32.@)
  97  *
  98  * Remove a SIP provider and its functions from the registry.
  99  *
 100  * PARAMS
 101  *  pgProv     [I] Pointer to a GUID for this SIP provider
 102  *
 103  * RETURNS
 104  *  Success: TRUE.
 105  *  Failure: FALSE. (Look at GetLastError()).
 106  *
 107  * NOTES
 108  *  Registry errors are always reported via SetLastError(). Every registry
 109  *  deletion will be tried.
 110  */
 111 BOOL WINAPI CryptSIPRemoveProvider(GUID *pgProv)
 112 {
 113     LONG r = ERROR_SUCCESS;
 114     LONG remove_error = ERROR_SUCCESS;
 115
 116     TRACE("%s\n", debugstr_guid(pgProv));
 117
 118     if (!pgProv)
 119     {
 120         SetLastError(ERROR_INVALID_PARAMETER);
 121         return FALSE;
 122     }
 123
 124
 125 #define CRYPT_SIPREMOVEPROV( key ) \
 126     r = CRYPT_SIPDeleteFunction( pgProv, key); \
 127     if (r != ERROR_SUCCESS) remove_error = r
 128
 129     CRYPT_SIPREMOVEPROV( szPutSigned);
 130     CRYPT_SIPREMOVEPROV( szGetSigned);
 131     CRYPT_SIPREMOVEPROV( szRemoveSigned);
 132     CRYPT_SIPREMOVEPROV( szCreate);
 133     CRYPT_SIPREMOVEPROV( szVerify);
 134     CRYPT_SIPREMOVEPROV( szIsMyFile);
 135     CRYPT_SIPREMOVEPROV( szIsMyFile2);
 136
 137 #undef CRYPT_SIPREMOVEPROV
 138
 139     if (remove_error != ERROR_SUCCESS)
 140     {
 141         SetLastError(remove_error);
 142         return FALSE;
 143     }
 144
 145     return TRUE;
 146 }
 147
 148 /*
 149  * Helper for CryptSIPAddProvider
 150  *
 151  * Add a registry key containing a dll name and function under
 152  *  "Software\\Microsoft\\Cryptography\\OID\\EncodingType 0\\<func>\\<guid>"
 153  */
 154 static LONG CRYPT_SIPWriteFunction( const GUID *guid, LPCWSTR szKey,
 155               LPCWSTR szDll, LPCWSTR szFunction )
 156 {
 157     WCHAR szFullKey[ 0x100 ];
 158     LONG r = ERROR_SUCCESS;
 159     HKEY hKey;
 160
 161     if( !szFunction )
 162          return ERROR_SUCCESS;
 163
 164     /* max length of szFullKey depends on our code only, so we won't overrun */
 165     lstrcpyW( szFullKey, szOID );
 166     lstrcatW( szFullKey, szKey );
 167     CRYPT_guid2wstr( guid, &szFullKey[ lstrlenW( szFullKey ) ] );
 168
 169     TRACE("key is %s\n", debugstr_w( szFullKey ) );
 170
 171     r = RegCreateKeyW( HKEY_LOCAL_MACHINE, szFullKey, &hKey );
 172     if( r != ERROR_SUCCESS ) goto error_close_key;
 173
 174     /* write the values */
 175     r = RegSetValueExW( hKey, szFuncName, 0, REG_SZ, (const BYTE*) szFunction,
 176                         ( lstrlenW( szFunction ) + 1 ) * sizeof (WCHAR) );
 177     if( r != ERROR_SUCCESS ) goto error_close_key;
 178     r = RegSetValueExW( hKey, szDllName, 0, REG_SZ, (const BYTE*) szDll,
 179                         ( lstrlenW( szDll ) + 1) * sizeof (WCHAR) );
 180
 181 error_close_key:
 182
 183     RegCloseKey( hKey );
 184
 185     return r;
 186 }
 187
 188 /***********************************************************************
 189  *             CryptSIPAddProvider (CRYPT32.@)
 190  *
 191  * Add a SIP provider and its functions to the registry.
 192  *
 193  * PARAMS
 194  *  psNewProv       [I] Pointer to a structure with information about
 195  *                      the functions this SIP provider can perform.
 196  *
 197  * RETURNS
 198  *  Success: TRUE.
 199  *  Failure: FALSE. (Look at GetLastError()).
 200  *
 201  * NOTES
 202  *  Registry errors are always reported via SetLastError(). If a
 203  *  registry error occurs the rest of the registry write operations
 204  *  will be skipped.
 205  */
 206 BOOL WINAPI CryptSIPAddProvider(SIP_ADD_NEWPROVIDER *psNewProv)
 207 {
 208     LONG r = ERROR_SUCCESS;
 209
 210     TRACE("%p\n", psNewProv);
 211
 212     if (!psNewProv ||
 213         psNewProv->cbStruct != sizeof(SIP_ADD_NEWPROVIDER) ||
 214         !psNewProv->pwszGetFuncName ||
 215         !psNewProv->pwszPutFuncName ||
 216         !psNewProv->pwszCreateFuncName ||
 217         !psNewProv->pwszVerifyFuncName ||
 218         !psNewProv->pwszRemoveFuncName)
 219     {
 220         SetLastError(ERROR_INVALID_PARAMETER);
 221         return FALSE;
 222     }
 223
 224     TRACE("%s %s %s %s %s\n",
 225           debugstr_guid( psNewProv->pgSubject ),
 226           debugstr_w( psNewProv->pwszDLLFileName ),
 227           debugstr_w( psNewProv->pwszMagicNumber ),
 228           debugstr_w( psNewProv->pwszIsFunctionName ),
 229           debugstr_w( psNewProv->pwszIsFunctionNameFmt2 ) );
 230
 231 #define CRYPT_SIPADDPROV( key, field ) \
 232     r = CRYPT_SIPWriteFunction( psNewProv->pgSubject, key, \
 233            psNewProv->pwszDLLFileName, psNewProv->field); \
 234     if (r != ERROR_SUCCESS) goto end_function
 235
 236     CRYPT_SIPADDPROV( szPutSigned, pwszPutFuncName );
 237     CRYPT_SIPADDPROV( szGetSigned, pwszGetFuncName );
 238     CRYPT_SIPADDPROV( szRemoveSigned, pwszRemoveFuncName );
 239     CRYPT_SIPADDPROV( szCreate, pwszCreateFuncName );
 240     CRYPT_SIPADDPROV( szVerify, pwszVerifyFuncName );
 241     CRYPT_SIPADDPROV( szIsMyFile, pwszIsFunctionName );
 242     CRYPT_SIPADDPROV( szIsMyFile2, pwszIsFunctionNameFmt2 );
 243
 244 #undef CRYPT_SIPADDPROV
 245
 246 end_function:
 247
 248     if (r != ERROR_SUCCESS)
 249     {
 250         SetLastError(r);
 251         return FALSE;
 252     }
 253
 254     return TRUE;
 255 }
 256
 257 static void *CRYPT_LoadSIPFuncFromKey(HKEY key, HMODULE *pLib)
 258 {
 259     LONG r;
 260     DWORD size;
 261     WCHAR dllName[MAX_PATH];
 262     char functionName[MAX_PATH];
 263     HMODULE lib;
 264     void *func = NULL;
 265
 266     /* Read the DLL entry */
 267     size = sizeof(dllName);
 268     r = RegQueryValueExW(key, szDllName, NULL, NULL, (LPBYTE)dllName, &size);
 269     if (r) goto end;
 270
 271     /* Read the Function entry */
 272     size = sizeof(functionName);
 273     r = RegQueryValueExA(key, "FuncName", NULL, NULL, (LPBYTE)functionName,
 274      &size);
 275     if (r) goto end;
 276
 277     lib = LoadLibraryW(dllName);
 278     if (!lib)
 279         goto end;
 280     func = GetProcAddress(lib, functionName);
 281     if (func)
 282         *pLib = lib;
 283     else
 284         FreeLibrary(lib);
 285
 286 end:
 287     return func;
 288 }
 289
 290 /***********************************************************************
 291  *             CryptSIPRetrieveSubjectGuid (CRYPT32.@)
 292  *
 293  * Determine the right SIP GUID for the given file.
 294  *
 295  * PARAMS
 296  *  FileName   [I] Filename.
 297  *  hFileIn    [I] Optional handle to the file.
 298  *  pgSubject  [O] The SIP's GUID.
 299  *
 300  * RETURNS
 301  *  Success: TRUE. pgSubject contains the SIP GUID.
 302  *  Failure: FALSE. (Look at GetLastError()).
 303  *
 304  * NOTES
 305  *  On failure pgSubject will contain a NULL GUID.
 306  *  The handle is always preferred above the filename.
 307  */
 308 BOOL WINAPI CryptSIPRetrieveSubjectGuid
 309       (LPCWSTR FileName, HANDLE hFileIn, GUID *pgSubject)
 310 {
 311     HANDLE hFile;
 312     BOOL   bRet = FALSE;
 313     DWORD  count;
 314     LARGE_INTEGER zero, oldPos;
 315     /* FIXME, find out if there is a name for this GUID */
 316     static const GUID unknown = { 0xC689AAB8, 0x8E78, 0x11D0, { 0x8C,0x47,0x00,0xC0,0x4F,0xC2,0x95,0xEE }};
 317     static const GUID cabGUID = { 0xc689aaba, 0x8e78, 0x11d0, {0x8c,0x47,0x00,0xc0,0x4f,0xc2,0x95,0xee }};
 318     static const WORD dosHdr = IMAGE_DOS_SIGNATURE;
 319     static const BYTE cabHdr[] = { 'M','S','C','F' };
 320     BYTE hdr[SIP_MAX_MAGIC_NUMBER];
 321     WCHAR szFullKey[ 0x100 ];
 322     LONG r = ERROR_SUCCESS;
 323     HKEY key;
 324
 325     TRACE("(%s %p %p)\n", wine_dbgstr_w(FileName), hFileIn, pgSubject);
 326
 327     if (!pgSubject || (!FileName && !hFileIn))
 328     {
 329         SetLastError(ERROR_INVALID_PARAMETER);
 330         return FALSE;
 331     }
 332
 333     /* Set pgSubject to zero's */
 334     memset(pgSubject, 0 , sizeof(GUID));
 335
 336     if (hFileIn)
 337         /* Use the given handle, make sure not to close this one ourselves */
 338         hFile = hFileIn;
 339     else
 340     {
 341         hFile = CreateFileW(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 342         /* Last error is set by CreateFile */
 343         if (hFile == INVALID_HANDLE_VALUE) return FALSE;
 344     }
 345
 346     zero.QuadPart = 0;
 347     SetFilePointerEx(hFile, zero, &oldPos, FILE_CURRENT);
 348     SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
 349     if (!ReadFile(hFile, hdr, sizeof(hdr), &count, NULL))
 350         goto cleanup;
 351
 352     if (count < SIP_MAX_MAGIC_NUMBER)
 353     {
 354         SetLastError(ERROR_INVALID_PARAMETER);
 355         goto cleanup;
 356     }
 357
 358     /* As everything is in place now we start looking at the file header */
 359     if (!memcmp(hdr, &dosHdr, sizeof(dosHdr)))
 360     {
 361         *pgSubject = unknown;
 362         SetLastError(S_OK);
 363         bRet = TRUE;
 364         goto cleanup;
 365     }
 366     /* Quick-n-dirty check for a cab file. */
 367     if (!memcmp(hdr, cabHdr, sizeof(cabHdr)))
 368     {
 369         *pgSubject = cabGUID;
 370         SetLastError(S_OK);
 371         bRet = TRUE;
 372         goto cleanup;
 373     }
 374
 375     /* Check for supported functions using CryptSIPDllIsMyFileType */
 376     /* max length of szFullKey depends on our code only, so we won't overrun */
 377     lstrcpyW(szFullKey, szOID);
 378     lstrcatW(szFullKey, szIsMyFile);
 379     r = RegOpenKeyExW(HKEY_LOCAL_MACHINE, szFullKey, 0, KEY_READ, &key);
 380     if (r == ERROR_SUCCESS)
 381     {
 382         DWORD index = 0, size;
 383         WCHAR subKeyName[MAX_PATH];
 384
 385         do {
 386             size = sizeof(subKeyName) / sizeof(subKeyName[0]);
 387             r = RegEnumKeyExW(key, index++, subKeyName, &size, NULL, NULL,
 388              NULL, NULL);
 389             if (r == ERROR_SUCCESS)
 390             {
 391                 HKEY subKey;
 392
 393                 r = RegOpenKeyExW(key, subKeyName, 0, KEY_READ, &subKey);
 394                 if (r == ERROR_SUCCESS)
 395                 {
 396                     HMODULE lib;
 397                     pfnIsFileSupported isMy = CRYPT_LoadSIPFuncFromKey(subKey,
 398                      &lib);
 399
 400                     if (isMy)
 401                     {
 402                         bRet = isMy(hFile, pgSubject);
 403                         FreeLibrary(lib);
 404                     }
 405                     RegCloseKey(subKey);
 406                 }
 407             }
 408         } while (!bRet && r == ERROR_SUCCESS);
 409         RegCloseKey(key);
 410     }
 411
 412     /* Check for supported functions using CryptSIPDllIsMyFileType2 */
 413     if (!bRet)
 414     {
 415         lstrcpyW(szFullKey, szOID);
 416         lstrcatW(szFullKey, szIsMyFile2);
 417         r = RegOpenKeyExW(HKEY_LOCAL_MACHINE, szFullKey, 0, KEY_READ, &key);
 418         if (r == ERROR_SUCCESS)
 419         {
 420             DWORD index = 0, size;
 421             WCHAR subKeyName[MAX_PATH];
 422
 423             do {
 424                 size = sizeof(subKeyName) / sizeof(subKeyName[0]);
 425                 r = RegEnumKeyExW(key, index++, subKeyName, &size, NULL, NULL,
 426                  NULL, NULL);
 427                 if (r == ERROR_SUCCESS)
 428                 {
 429                     HKEY subKey;
 430
 431                     r = RegOpenKeyExW(key, subKeyName, 0, KEY_READ, &subKey);
 432                     if (r == ERROR_SUCCESS)
 433                     {
 434                         HMODULE lib;
 435                         pfnIsFileSupportedName isMy2 =
 436                          CRYPT_LoadSIPFuncFromKey(subKey, &lib);
 437
 438                         if (isMy2)
 439                         {
 440                             bRet = isMy2((LPWSTR)FileName, pgSubject);
 441                             FreeLibrary(lib);
 442                         }
 443                         RegCloseKey(subKey);
 444                     }
 445                 }
 446             } while (!bRet && r == ERROR_SUCCESS);
 447             RegCloseKey(key);
 448         }
 449     }
 450
 451     if (!bRet)
 452         SetLastError(TRUST_E_SUBJECT_FORM_UNKNOWN);
 453
 454 cleanup:
 455     /* If we didn't open this one we shouldn't close it (hFile is a copy),
 456      * but we should reset the file pointer to its original position.
 457      */
 458     if (!hFileIn)
 459         CloseHandle(hFile);
 460     else
 461         SetFilePointerEx(hFile, oldPos, NULL, FILE_BEGIN);
 462
 463     return bRet;
 464 }
 465
 466 static LONG CRYPT_OpenSIPFunctionKey(const GUID *guid, LPCWSTR function,
 467  HKEY *key)
 468 {
 469     WCHAR szFullKey[ 0x100 ];
 470
 471     lstrcpyW(szFullKey, szOID);
 472     lstrcatW(szFullKey, function);
 473     CRYPT_guid2wstr(guid, &szFullKey[lstrlenW(szFullKey)]);
 474     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, szFullKey, 0, KEY_READ, key);
 475 }
 476
 477 /* Loads the function named function for the SIP specified by pgSubject, and
 478  * returns it if found.  Returns NULL on error.  If the function is loaded,
 479  * *pLib is set to the library in which it is found.
 480  */
 481 static void *CRYPT_LoadSIPFunc(const GUID *pgSubject, LPCWSTR function,
 482  HMODULE *pLib)
 483 {
 484     LONG r;
 485     HKEY key;
 486     void *func = NULL;
 487
 488     TRACE("(%s, %s)\n", debugstr_guid(pgSubject), debugstr_w(function));
 489
 490     r = CRYPT_OpenSIPFunctionKey(pgSubject, function, &key);
 491     if (!r)
 492     {
 493         func = CRYPT_LoadSIPFuncFromKey(key, pLib);
 494         RegCloseKey(key);
 495     }
 496     TRACE("returning %p\n", func);
 497     return func;
 498 }
 499
 500 typedef struct _WINE_SIP_PROVIDER {
 501     GUID              subject;
 502     SIP_DISPATCH_INFO info;
 503     struct list       entry;
 504 } WINE_SIP_PROVIDER;
 505
 506 static struct list providers = { &providers, &providers };
 507 static CRITICAL_SECTION providers_cs;
 508 static CRITICAL_SECTION_DEBUG providers_cs_debug =
 509 {
 510     0, 0, &providers_cs,
 511     { &providers_cs_debug.ProcessLocksList,
 512     &providers_cs_debug.ProcessLocksList },
 513     0, 0, { (DWORD_PTR)(__FILE__ ": providers_cs") }
 514 };
 515 static CRITICAL_SECTION providers_cs = { &providers_cs_debug, -1, 0, 0, 0, 0 };
 516
 517 static void CRYPT_CacheSIP(const GUID *pgSubject, SIP_DISPATCH_INFO *info)
 518 {
 519     WINE_SIP_PROVIDER *prov = CryptMemAlloc(sizeof(WINE_SIP_PROVIDER));
 520
 521     if (prov)
 522     {
 523         prov->subject = *pgSubject;
 524         prov->info = *info;
 525         EnterCriticalSection(&providers_cs);
 526         list_add_tail(&providers, &prov->entry);
 527         LeaveCriticalSection(&providers_cs);
 528     }
 529 }
 530
 531 static WINE_SIP_PROVIDER *CRYPT_GetCachedSIP(const GUID *pgSubject)
 532 {
 533     WINE_SIP_PROVIDER *provider = NULL, *ret = NULL;
 534
 535     EnterCriticalSection(&providers_cs);
 536     LIST_FOR_EACH_ENTRY(provider, &providers, WINE_SIP_PROVIDER, entry)
 537     {
 538         if (IsEqualGUID(pgSubject, &provider->subject))
 539             break;
 540     }
 541     if (provider && IsEqualGUID(pgSubject, &provider->subject))
 542         ret = provider;
 543     LeaveCriticalSection(&providers_cs);
 544     return ret;
 545 }
 546
 547 static inline BOOL CRYPT_IsSIPCached(const GUID *pgSubject)
 548 {
 549     return CRYPT_GetCachedSIP(pgSubject) != NULL;
 550 }
 551
 552 void crypt_sip_free(void)
 553 {
 554     WINE_SIP_PROVIDER *prov, *next;
 555
 556     LIST_FOR_EACH_ENTRY_SAFE(prov, next, &providers, WINE_SIP_PROVIDER, entry)
 557     {
 558         list_remove(&prov->entry);
 559         FreeLibrary(prov->info.hSIP);
 560         CryptMemFree(prov);
 561     }
 562 }
 563
 564 /* Loads the SIP for pgSubject into the global cache.  Returns FALSE if the
 565  * SIP isn't registered or is invalid.
 566  */
 567 static BOOL CRYPT_LoadSIP(const GUID *pgSubject)
 568 {
 569     SIP_DISPATCH_INFO sip = { 0 };
 570     HMODULE lib = NULL, temp = NULL;
 571
 572     sip.pfGet = CRYPT_LoadSIPFunc(pgSubject, szGetSigned, &lib);
 573     if (!sip.pfGet)
 574         goto error;
 575     sip.pfPut = CRYPT_LoadSIPFunc(pgSubject, szPutSigned, &temp);
 576     if (!sip.pfPut || temp != lib)
 577         goto error;
 578     FreeLibrary(temp);
 579     sip.pfCreate = CRYPT_LoadSIPFunc(pgSubject, szCreate, &temp);
 580     if (!sip.pfCreate || temp != lib)
 581         goto error;
 582     FreeLibrary(temp);
 583     sip.pfVerify = CRYPT_LoadSIPFunc(pgSubject, szVerify, &temp);
 584     if (!sip.pfVerify || temp != lib)
 585         goto error;
 586     FreeLibrary(temp);
 587     sip.pfRemove = CRYPT_LoadSIPFunc(pgSubject, szRemoveSigned, &temp);
 588     if (!sip.pfRemove || temp != lib)
 589         goto error;
 590     FreeLibrary(temp);
 591     sip.hSIP = lib;
 592     CRYPT_CacheSIP(pgSubject, &sip);
 593     return TRUE;
 594
 595 error:
 596     FreeLibrary(lib);
 597     FreeLibrary(temp);
 598     SetLastError(TRUST_E_SUBJECT_FORM_UNKNOWN);
 599     return FALSE;
 600 }
 601
 602 /***********************************************************************
 603  *             CryptSIPLoad (CRYPT32.@)
 604  *
 605  * Load some internal crypt32 functions into a SIP_DISPATCH_INFO structure.
 606  *
 607  * PARAMS
 608  *  pgSubject    [I] The GUID.
 609  *  dwFlags      [I] Flags.
 610  *  pSipDispatch [I] The loaded functions.
 611  *
 612  * RETURNS
 613  *  Success: TRUE. pSipDispatch contains the functions.
 614  *  Failure: FALSE. (Look at GetLastError()).
 615  *
 616  * NOTES
 617  *  CryptSIPLoad uses caching for the list of GUIDs and whether a SIP is
 618  *  already loaded.
 619  *
 620  *  An application calls CryptSipLoad which will return a structure with the
 621  *  function addresses of some internal crypt32 functions. The application will
 622  *  then call these functions which will be forwarded to the appropriate SIP.
 623  *
 624  *  CryptSIPLoad will load the needed SIP but doesn't unload this dll. The unloading
 625  *  is done when crypt32 is unloaded.
 626  */
 627 BOOL WINAPI CryptSIPLoad
 628        (const GUID *pgSubject, DWORD dwFlags, SIP_DISPATCH_INFO *pSipDispatch)
 629 {
 630     TRACE("(%s %d %p)\n", debugstr_guid(pgSubject), dwFlags, pSipDispatch);
 631
 632     if (!pgSubject || dwFlags != 0 || !pSipDispatch)
 633     {
 634         SetLastError(ERROR_INVALID_PARAMETER);
 635         return FALSE;
 636     }
 637     if (!CRYPT_IsSIPCached(pgSubject) && !CRYPT_LoadSIP(pgSubject))
 638         return FALSE;
 639
 640     pSipDispatch->hSIP = NULL;
 641     pSipDispatch->pfGet = CryptSIPGetSignedDataMsg;
 642     pSipDispatch->pfPut = CryptSIPPutSignedDataMsg;
 643     pSipDispatch->pfCreate = CryptSIPCreateIndirectData;
 644     pSipDispatch->pfVerify = CryptSIPVerifyIndirectData;
 645     pSipDispatch->pfRemove = CryptSIPRemoveSignedDataMsg;
 646
 647     return TRUE;
 648 }
 649
 650 /***********************************************************************
 651  *             CryptSIPCreateIndirectData (CRYPT32.@)
 652  */
 653 BOOL WINAPI CryptSIPCreateIndirectData(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pcbIndirectData,
 654                                        SIP_INDIRECT_DATA* pIndirectData)
 655 {
 656     WINE_SIP_PROVIDER *sip;
 657     BOOL ret = FALSE;
 658
 659     TRACE("(%p %p %p)\n", pSubjectInfo, pcbIndirectData, pIndirectData);
 660
 661     if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
 662         ret = sip->info.pfCreate(pSubjectInfo, pcbIndirectData, pIndirectData);
 663     TRACE("returning %d\n", ret);
 664     return ret;
 665 }
 666
 667 /***********************************************************************
 668  *             CryptSIPGetSignedDataMsg (CRYPT32.@)
 669  */
 670 BOOL WINAPI CryptSIPGetSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pdwEncodingType,
 671                                        DWORD dwIndex, DWORD* pcbSignedDataMsg, BYTE* pbSignedDataMsg)
 672 {
 673     WINE_SIP_PROVIDER *sip;
 674     BOOL ret = FALSE;
 675
 676     TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
 677           pcbSignedDataMsg, pbSignedDataMsg);
 678
 679     if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
 680         ret = sip->info.pfGet(pSubjectInfo, pdwEncodingType, dwIndex,
 681          pcbSignedDataMsg, pbSignedDataMsg);
 682     TRACE("returning %d\n", ret);
 683     return ret;
 684 }
 685
 686 /***********************************************************************
 687  *             CryptSIPPutSignedDataMsg (CRYPT32.@)
 688  */
 689 BOOL WINAPI CryptSIPPutSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD pdwEncodingType,
 690                                        DWORD* pdwIndex, DWORD cbSignedDataMsg, BYTE* pbSignedDataMsg)
 691 {
 692     WINE_SIP_PROVIDER *sip;
 693     BOOL ret = FALSE;
 694
 695     TRACE("(%p %d %p %d %p)\n", pSubjectInfo, pdwEncodingType, pdwIndex,
 696           cbSignedDataMsg, pbSignedDataMsg);
 697
 698     if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
 699         ret = sip->info.pfPut(pSubjectInfo, pdwEncodingType, pdwIndex,
 700          cbSignedDataMsg, pbSignedDataMsg);
 701     TRACE("returning %d\n", ret);
 702     return ret;
 703 }
 704
 705 /***********************************************************************
 706  *             CryptSIPRemoveSignedDataMsg (CRYPT32.@)
 707  */
 708 BOOL WINAPI CryptSIPRemoveSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo,
 709                                        DWORD dwIndex)
 710 {
 711     WINE_SIP_PROVIDER *sip;
 712     BOOL ret = FALSE;
 713
 714     TRACE("(%p %d)\n", pSubjectInfo, dwIndex);
 715
 716     if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
 717         ret = sip->info.pfRemove(pSubjectInfo, dwIndex);
 718     TRACE("returning %d\n", ret);
 719     return ret;
 720 }
 721
 722 /***********************************************************************
 723  *             CryptSIPVerifyIndirectData (CRYPT32.@)
 724  */
 725 BOOL WINAPI CryptSIPVerifyIndirectData(SIP_SUBJECTINFO* pSubjectInfo,
 726                                        SIP_INDIRECT_DATA* pIndirectData)
 727 {
 728     WINE_SIP_PROVIDER *sip;
 729     BOOL ret = FALSE;
 730
 731     TRACE("(%p %p)\n", pSubjectInfo, pIndirectData);
 732
 733     if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
 734         ret = sip->info.pfVerify(pSubjectInfo, pIndirectData);
 735     TRACE("returning %d\n", ret);
 736     return ret;
 737 }