dlls/crypt32/oid.c

   1 /*
   2  * Copyright 2002 Mike McCormack for CodeWeavers
   3  * Copyright 2005 Juan Lang
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 #include <stdio.h>
  20 #include <stdarg.h>
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "wincrypt.h"
  24 #include "winreg.h"
  25 #include "wine/debug.h"
  26 #include "wine/list.h"
  27 #include "crypt32_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  30
  31 static const WCHAR DllW[] = { 'D','l','l',0 };
  32 CRITICAL_SECTION funcSetCS;
  33 struct list funcSets;
  34
  35 struct OIDFunctionSet
  36 {
  37     LPSTR name;
  38     CRITICAL_SECTION cs; /* protects functions */
  39     struct list functions;
  40     struct list next;
  41 };
  42
  43 struct OIDFunction
  44 {
  45     DWORD encoding;
  46     CRYPT_OID_FUNC_ENTRY entry;
  47     struct list next;
  48 };
  49
  50 void CRYPT_InitFunctionSets(void)
  51 {
  52     InitializeCriticalSection(&funcSetCS);
  53     list_init(&funcSets);
  54 }
  55
  56 void CRYPT_FreeFunctionSets(void)
  57 {
  58     struct OIDFunctionSet *setCursor, *setNext;
  59
  60     LIST_FOR_EACH_ENTRY_SAFE(setCursor, setNext, &funcSets,
  61      struct OIDFunctionSet, next)
  62     {
  63         struct OIDFunction *functionCursor, *funcNext;
  64
  65         list_remove(&setCursor->next);
  66         CryptMemFree(setCursor->name);
  67         CryptMemFree(setCursor);
  68         LIST_FOR_EACH_ENTRY_SAFE(functionCursor, funcNext,
  69          &setCursor->functions, struct OIDFunction, next)
  70         {
  71             list_remove(&functionCursor->next);
  72             CryptMemFree(functionCursor);
  73         }
  74         DeleteCriticalSection(&setCursor->cs);
  75     }
  76     DeleteCriticalSection(&funcSetCS);
  77 }
  78
  79 /* There is no free function associated with this; therefore, the sets are
  80  * freed when crypt32.dll is unloaded.
  81  */
  82 HCRYPTOIDFUNCSET WINAPI CryptInitOIDFunctionSet(LPCSTR pszFuncName,
  83  DWORD dwFlags)
  84 {
  85     struct OIDFunctionSet *cursor, *ret = NULL;
  86
  87     TRACE("(%s, %lx)\n", debugstr_a(pszFuncName), dwFlags);
  88
  89     EnterCriticalSection(&funcSetCS);
  90     LIST_FOR_EACH_ENTRY(cursor, &funcSets, struct OIDFunctionSet, next)
  91     {
  92         if (!strcasecmp(pszFuncName, cursor->name))
  93         {
  94             ret = (HCRYPTOIDFUNCSET)cursor;
  95             break;
  96         }
  97     }
  98     if (!ret)
  99     {
 100         ret = CryptMemAlloc(sizeof(struct OIDFunctionSet));
 101         if (ret)
 102         {
 103             memset(ret, 0, sizeof(*ret));
 104             ret->name = CryptMemAlloc(strlen(pszFuncName) + 1);
 105             if (ret->name)
 106             {
 107                 InitializeCriticalSection(&ret->cs);
 108                 list_init(&ret->functions);
 109                 strcpy(ret->name, pszFuncName);
 110                 list_add_tail(&funcSets, &ret->next);
 111             }
 112             else
 113             {
 114                 CryptMemFree(ret);
 115                 ret = NULL;
 116             }
 117         }
 118     }
 119     LeaveCriticalSection(&funcSetCS);
 120
 121     return (HCRYPTOIDFUNCSET)ret;
 122 }
 123
 124 static char *CRYPT_GetKeyName(DWORD dwEncodingType, LPCSTR pszFuncName,
 125  LPCSTR pszOID)
 126 {
 127     static const char szEncodingTypeFmt[] =
 128      "Software\\Microsoft\\Cryptography\\OID\\EncodingType %ld\\%s\\%s";
 129     UINT len;
 130     char numericOID[7]; /* enough for "#65535" */
 131     const char *oid;
 132     LPSTR szKey;
 133
 134     /* MSDN says the encoding type is a mask, but it isn't treated that way.
 135      * (E.g., if dwEncodingType were 3, the key names "EncodingType 1" and
 136      * "EncodingType 2" would be expected if it were a mask.  Instead native
 137      * stores values in "EncodingType 3".
 138      */
 139     if (!HIWORD(pszOID))
 140     {
 141         snprintf(numericOID, sizeof(numericOID), "#%d", LOWORD(pszOID));
 142         oid = numericOID;
 143     }
 144     else
 145         oid = pszOID;
 146
 147     /* This is enough: the lengths of the two string parameters are explicitly
 148      * counted, and we need up to five additional characters for the encoding
 149      * type.  These are covered by the "%d", "%s", and "%s" characters in the
 150      * format specifier that are removed by sprintf.
 151      */
 152     len = sizeof(szEncodingTypeFmt) + lstrlenA(pszFuncName) + lstrlenA(oid);
 153     szKey = CryptMemAlloc(len);
 154     if (szKey)
 155         sprintf(szKey, szEncodingTypeFmt, dwEncodingType, pszFuncName, oid);
 156     return szKey;
 157 }
 158
 159 BOOL WINAPI CryptGetDefaultOIDDllList(HCRYPTOIDFUNCSET hFuncSet,
 160  DWORD dwEncodingType, LPWSTR pwszDllList, DWORD *pcchDllList)
 161 {
 162     BOOL ret = TRUE;
 163     struct OIDFunctionSet *set = (struct OIDFunctionSet *)hFuncSet;
 164     char *keyName;
 165     HKEY key;
 166     long rc;
 167
 168     TRACE("(%p, %ld, %p, %p)\n", hFuncSet, dwEncodingType, pwszDllList,
 169      pcchDllList);
 170
 171     keyName = CRYPT_GetKeyName(dwEncodingType, set->name, "DEFAULT");
 172     rc = RegCreateKeyExA(HKEY_LOCAL_MACHINE, keyName, 0, NULL, 0,
 173      KEY_READ, NULL, &key, NULL);
 174     if (!rc)
 175     {
 176         DWORD size = *pcchDllList * sizeof(WCHAR);
 177
 178         rc = RegQueryValueExW(key, DllW, NULL, NULL, (LPBYTE)pwszDllList,
 179          &size);
 180         if (!rc)
 181             *pcchDllList = size / sizeof(WCHAR);
 182         else
 183         {
 184             /* No value, return an empty list */
 185             if (*pcchDllList)
 186                 *pwszDllList = '\0';
 187             *pcchDllList = 1;
 188         }
 189         RegCloseKey(key);
 190     }
 191     else
 192     {
 193         SetLastError(rc);
 194         ret = FALSE;
 195     }
 196     CryptMemFree(keyName);
 197
 198     return ret;
 199 }
 200
 201 BOOL WINAPI CryptInstallOIDFunctionAddress(HMODULE hModule,
 202  DWORD dwEncodingType, LPCSTR pszFuncName, DWORD cFuncEntry,
 203  const CRYPT_OID_FUNC_ENTRY rgFuncEntry[], DWORD dwFlags)
 204 {
 205     BOOL ret = TRUE;
 206     struct OIDFunctionSet *set;
 207
 208     TRACE("(%p, %ld, %s, %ld, %p, %08lx)\n", hModule, dwEncodingType,
 209      debugstr_a(pszFuncName), cFuncEntry, rgFuncEntry, dwFlags);
 210
 211     set = (struct OIDFunctionSet *)CryptInitOIDFunctionSet(pszFuncName, 0);
 212     if (set)
 213     {
 214         DWORD i;
 215
 216         EnterCriticalSection(&set->cs);
 217         for (i = 0; ret && i < cFuncEntry; i++)
 218         {
 219             struct OIDFunction *func;
 220
 221             if (HIWORD(rgFuncEntry[i].pszOID))
 222                 func = CryptMemAlloc(sizeof(struct OIDFunction)
 223                  + strlen(rgFuncEntry[i].pszOID) + 1);
 224             else
 225                 func = CryptMemAlloc(sizeof(struct OIDFunction));
 226             if (func)
 227             {
 228                 func->encoding = dwEncodingType;
 229                 if (HIWORD(rgFuncEntry[i].pszOID))
 230                 {
 231                     func->entry.pszOID = (LPSTR)((LPBYTE)func + sizeof(*func));
 232                     strcpy((LPSTR)func->entry.pszOID, rgFuncEntry[i].pszOID);
 233                 }
 234                 else
 235                     func->entry.pszOID = rgFuncEntry[i].pszOID;
 236                 func->entry.pvFuncAddr = rgFuncEntry[i].pvFuncAddr;
 237                 list_add_tail(&set->functions, &func->next);
 238             }
 239             else
 240                 ret = FALSE;
 241         }
 242         LeaveCriticalSection(&set->cs);
 243     }
 244     else
 245         ret = FALSE;
 246     return ret;
 247 }
 248
 249 static BOOL CRYPT_GetFuncFromReg(DWORD dwEncodingType, LPCSTR pszOID,
 250  LPCSTR szFuncName, LPVOID *ppvFuncAddr, HCRYPTOIDFUNCADDR *phFuncAddr)
 251 {
 252     BOOL ret = FALSE;
 253     char *keyName;
 254     const char *funcName;
 255     HKEY key;
 256     long rc;
 257
 258     keyName = CRYPT_GetKeyName(dwEncodingType, szFuncName, pszOID);
 259     rc = RegOpenKeyExA(HKEY_LOCAL_MACHINE, keyName, 0, KEY_READ, &key);
 260     if (!rc)
 261     {
 262         DWORD type, size = 0;
 263
 264         rc = RegQueryValueExA(key, "FuncName", NULL, &type, NULL, &size);
 265         if (rc == ERROR_MORE_DATA && type == REG_SZ)
 266         {
 267             funcName = CryptMemAlloc(size);
 268             rc = RegQueryValueExA(key, "FuncName", NULL, &type,
 269              (LPBYTE)funcName, &size);
 270         }
 271         else
 272             funcName = szFuncName;
 273         rc = RegQueryValueExW(key, DllW, NULL, &type, NULL, &size);
 274         if (rc == ERROR_MORE_DATA && type == REG_SZ)
 275         {
 276             LPWSTR dllName = CryptMemAlloc(size);
 277
 278             if (dllName)
 279             {
 280                 rc = RegQueryValueExW(key, DllW, NULL, NULL,
 281                  (LPBYTE)dllName, &size);
 282                 if (!rc)
 283                 {
 284                     HMODULE lib;
 285
 286                     /* This is a bit of a hack; MSDN describes a more
 287                      * complicated unload routine than this will allow.
 288                      * Still, this seems to suffice for now.
 289                      */
 290                     lib = LoadLibraryW(dllName);
 291                     if (lib)
 292                     {
 293                         *ppvFuncAddr = GetProcAddress(lib, szFuncName);
 294                         if (*ppvFuncAddr)
 295                         {
 296                             *phFuncAddr = (HCRYPTOIDFUNCADDR)lib;
 297                             ret = TRUE;
 298                         }
 299                         else
 300                         {
 301                             /* Unload the library, the caller doesn't want
 302                              * to unload it when the return value is NULL.
 303                              */
 304                             FreeLibrary(lib);
 305                         }
 306                     }
 307                 }
 308                 else
 309                     SetLastError(rc);
 310                 CryptMemFree(dllName);
 311             }
 312         }
 313         else
 314             SetLastError(rc);
 315         if (funcName != szFuncName)
 316             CryptMemFree((char *)funcName);
 317         RegCloseKey(key);
 318     }
 319     else
 320         SetLastError(rc);
 321     CryptMemFree(keyName);
 322     return ret;
 323 }
 324
 325 BOOL WINAPI CryptGetOIDFunctionAddress(HCRYPTOIDFUNCSET hFuncSet,
 326  DWORD dwEncodingType, LPCSTR pszOID, DWORD dwFlags, void **ppvFuncAddr,
 327  HCRYPTOIDFUNCADDR *phFuncAddr)
 328 {
 329     BOOL ret = FALSE;
 330     struct OIDFunctionSet *set = (struct OIDFunctionSet *)hFuncSet;
 331
 332     TRACE("(%p, %ld, %s, %08lx, %p, %p)\n", hFuncSet, dwEncodingType,
 333      debugstr_a(pszOID), dwFlags, ppvFuncAddr, phFuncAddr);
 334
 335     *ppvFuncAddr = NULL;
 336     if (!(dwFlags & CRYPT_GET_INSTALLED_OID_FUNC_FLAG))
 337     {
 338         struct OIDFunction *function;
 339
 340         EnterCriticalSection(&set->cs);
 341         LIST_FOR_EACH_ENTRY(function, &set->functions, struct OIDFunction, next)
 342         {
 343             if (function->encoding == dwEncodingType)
 344             {
 345                 if (HIWORD(pszOID))
 346                 {
 347                     if (HIWORD(function->entry.pszOID &&
 348                      !strcasecmp(function->entry.pszOID, pszOID)))
 349                     {
 350                         *ppvFuncAddr = function->entry.pvFuncAddr;
 351                         *phFuncAddr = NULL; /* FIXME: what should it be? */
 352                         ret = TRUE;
 353                         break;
 354                     }
 355                 }
 356                 else if (function->entry.pszOID == pszOID)
 357                 {
 358                     *ppvFuncAddr = function->entry.pvFuncAddr;
 359                     *phFuncAddr = NULL; /* FIXME: what should it be? */
 360                     ret = TRUE;
 361                     break;
 362                 }
 363             }
 364         }
 365         LeaveCriticalSection(&set->cs);
 366     }
 367     if (!*ppvFuncAddr)
 368         ret = CRYPT_GetFuncFromReg(dwEncodingType, pszOID, set->name,
 369          ppvFuncAddr, phFuncAddr);
 370     return ret;
 371 }
 372
 373 BOOL WINAPI CryptFreeOIDFunctionAddress(HCRYPTOIDFUNCADDR hFuncAddr,
 374  DWORD dwFlags)
 375 {
 376     TRACE("(%p, %08lx)\n", hFuncAddr, dwFlags);
 377
 378     /* FIXME: as MSDN states, need to check for DllCanUnloadNow in the DLL,
 379      * and only unload it if it can be unloaded.  Also need to implement ref
 380      * counting on the functions.
 381      */
 382     FreeLibrary((HMODULE)hFuncAddr);
 383     return TRUE;
 384 }
 385
 386 BOOL WINAPI CryptRegisterDefaultOIDFunction(DWORD dwEncodingType,
 387  LPCSTR pszFuncName, DWORD dwIndex, LPCWSTR pwszDll)
 388 {
 389     FIXME("(%lx,%s,%lx,%s) stub!\n", dwEncodingType, pszFuncName, dwIndex,
 390           debugstr_w(pwszDll));
 391     return FALSE;
 392 }
 393
 394 BOOL WINAPI CryptUnregisterDefaultOIDFunction(DWORD dwEncodingType,
 395  LPCSTR pszFuncName, LPCWSTR pwszDll)
 396 {
 397     FIXME("(%lx %s %s): stub\n", dwEncodingType, debugstr_a(pszFuncName),
 398      debugstr_w(pwszDll));
 399     return FALSE;
 400 }
 401
 402 BOOL WINAPI CryptGetDefaultOIDFunctionAddress(HCRYPTOIDFUNCSET hFuncSet,
 403  DWORD dwEncodingType, LPCWSTR pwszDll, DWORD dwFlags, void *ppvFuncAddr,
 404  HCRYPTOIDFUNCADDR *phFuncAddr)
 405 {
 406     FIXME("(%p, %ld, %s, %08lx, %p, %p): stub\n", hFuncSet, dwEncodingType,
 407      debugstr_w(pwszDll), dwFlags, ppvFuncAddr, phFuncAddr);
 408     return FALSE;
 409 }
 410
 411 BOOL WINAPI CryptRegisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
 412                   LPCSTR pszOID, LPCWSTR pwszDll, LPCSTR pszOverrideFuncName)
 413 {
 414     LONG r;
 415     HKEY hKey;
 416     LPSTR szKey;
 417
 418     TRACE("(%lx, %s, %s, %s, %s)\n", dwEncodingType, pszFuncName, pszOID,
 419      debugstr_w(pwszDll), pszOverrideFuncName);
 420
 421     /* This only registers functions for encoding certs, not messages */
 422     if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
 423         return TRUE;
 424
 425     /* Native does nothing pwszDll is NULL */
 426     if (!pwszDll)
 427         return TRUE;
 428
 429     /* I'm not matching MS bug for bug here, because I doubt any app depends on
 430      * it:  native "succeeds" if pszFuncName is NULL, but the nonsensical entry
 431      * it creates would never be used.
 432      */
 433     if (!pszFuncName || !pszOID)
 434     {
 435         SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
 436         return FALSE;
 437     }
 438
 439     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
 440     TRACE("Key name is %s\n", debugstr_a(szKey));
 441
 442     if (!szKey)
 443         return FALSE;
 444
 445     r = RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
 446     CryptMemFree(szKey);
 447     if(r != ERROR_SUCCESS)
 448         return FALSE;
 449
 450     /* write the values */
 451     if (pszOverrideFuncName)
 452         RegSetValueExA(hKey, "FuncName", 0, REG_SZ,
 453          (const BYTE*)pszOverrideFuncName, lstrlenA(pszOverrideFuncName) + 1);
 454     RegSetValueExW(hKey, DllW, 0, REG_SZ, (const BYTE*) pwszDll,
 455      (lstrlenW(pwszDll) + 1) * sizeof (WCHAR));
 456
 457     RegCloseKey(hKey);
 458     return TRUE;
 459 }
 460
 461 BOOL WINAPI CryptUnregisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
 462  LPCSTR pszOID)
 463 {
 464     LPSTR szKey;
 465     LONG rc;
 466
 467     TRACE("%lx %s %s\n", dwEncodingType, pszFuncName, pszOID);
 468
 469     if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
 470         return TRUE;
 471
 472     if (!pszFuncName || !pszOID)
 473     {
 474         SetLastError(ERROR_INVALID_PARAMETER);
 475         return FALSE;
 476     }
 477
 478     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
 479     rc = RegDeleteKeyA(HKEY_LOCAL_MACHINE, szKey);
 480     CryptMemFree(szKey);
 481     if (rc)
 482         SetLastError(rc);
 483     return rc ? FALSE : TRUE;
 484 }
 485
 486 BOOL WINAPI CryptGetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
 487  LPCSTR pszOID, LPCWSTR pwszValueName, DWORD *pdwValueType, BYTE *pbValueData,
 488  DWORD *pcbValueData)
 489 {
 490     LPSTR szKey;
 491     LONG rc;
 492     HKEY hKey;
 493
 494     TRACE("%lx %s %s %s %p %p %p\n", dwEncodingType, debugstr_a(pszFuncName),
 495      debugstr_a(pszOID), debugstr_w(pwszValueName), pdwValueType, pbValueData,
 496      pcbValueData);
 497
 498     if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
 499         return TRUE;
 500
 501     if (!pszFuncName || !pszOID || !pwszValueName)
 502     {
 503         SetLastError(ERROR_INVALID_PARAMETER);
 504         return FALSE;
 505     }
 506
 507     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
 508     rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
 509     CryptMemFree(szKey);
 510     if (rc)
 511         SetLastError(rc);
 512     else
 513     {
 514         rc = RegQueryValueExW(hKey, pwszValueName, NULL, pdwValueType,
 515          pbValueData, pcbValueData);
 516         if (rc)
 517             SetLastError(rc);
 518         RegCloseKey(hKey);
 519     }
 520     return rc ? FALSE : TRUE;
 521 }
 522
 523 BOOL WINAPI CryptSetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
 524  LPCSTR pszOID, LPCWSTR pwszValueName, DWORD dwValueType,
 525  const BYTE *pbValueData, DWORD cbValueData)
 526 {
 527     LPSTR szKey;
 528     LONG rc;
 529     HKEY hKey;
 530
 531     TRACE("%lx %s %s %s %ld %p %ld\n", dwEncodingType, debugstr_a(pszFuncName),
 532      debugstr_a(pszOID), debugstr_w(pwszValueName), dwValueType, pbValueData,
 533      cbValueData);
 534
 535     if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
 536         return TRUE;
 537
 538     if (!pszFuncName || !pszOID || !pwszValueName)
 539     {
 540         SetLastError(ERROR_INVALID_PARAMETER);
 541         return FALSE;
 542     }
 543
 544     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
 545     rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
 546     CryptMemFree(szKey);
 547     if (rc)
 548         SetLastError(rc);
 549     else
 550     {
 551         rc = RegSetValueExW(hKey, pwszValueName, 0, dwValueType, pbValueData,
 552          cbValueData);
 553         if (rc)
 554             SetLastError(rc);
 555         RegCloseKey(hKey);
 556     }
 557     return rc ? FALSE : TRUE;
 558 }