dlls/crypt32/encode.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 <stdarg.h>
  20 #include <stdio.h>
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "wincrypt.h"
  24 #include "winreg.h"
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  28
  29 static char *CRYPT_GetKeyName(DWORD dwEncodingType, LPCSTR pszFuncName,
  30  LPCSTR pszOID)
  31 {
  32     static const char szEncodingTypeFmt[] =
  33      "Software\\Microsoft\\Cryptography\\OID\\EncodingType %ld\\%s\\%s";
  34     UINT len;
  35     char numericOID[7]; /* enough for "#65535" */
  36     const char *oid;
  37     LPSTR szKey;
  38
  39     /* MSDN says the encoding type is a mask, but it isn't treated that way.
  40      * (E.g., if dwEncodingType were 3, the key names "EncodingType 1" and
  41      * "EncodingType 2" would be expected if it were a mask.  Instead native
  42      * stores values in "EncodingType 3".
  43      */
  44     if (!HIWORD(pszOID))
  45     {
  46         snprintf(numericOID, sizeof(numericOID), "#%d", (int)pszOID);
  47         oid = numericOID;
  48     }
  49     else
  50         oid = pszOID;
  51
  52     /* This is enough: the lengths of the two string parameters are explicitly
  53      * counted, and we need up to five additional characters for the encoding
  54      * type.  These are covered by the "%d", "%s", and "%s" characters in the
  55      * format specifier that are removed by sprintf.
  56      */
  57     len = sizeof(szEncodingTypeFmt) + lstrlenA(pszFuncName) + lstrlenA(oid);
  58     szKey = HeapAlloc(GetProcessHeap(), 0, len);
  59     if (szKey)
  60         sprintf(szKey, szEncodingTypeFmt, dwEncodingType, pszFuncName, oid);
  61     return szKey;
  62 }
  63
  64 BOOL WINAPI CryptRegisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
  65                   LPCSTR pszOID, LPCWSTR pwszDll, LPCSTR pszOverrideFuncName)
  66 {
  67     LONG r;
  68     static const WCHAR szDllName[] = { 'D','l','l',0 };
  69     HKEY hKey;
  70     LPSTR szKey;
  71
  72     TRACE("%lx %s %s %s %s\n", dwEncodingType, pszFuncName, pszOID,
  73           debugstr_w(pwszDll), pszOverrideFuncName);
  74
  75     /* MSDN states dwEncodingType is a mask, but it isn't really treated as
  76      * such.  Values 65536 or greater are ignored.
  77      */
  78     if (dwEncodingType >= PKCS_7_ASN_ENCODING)
  79         return TRUE;
  80
  81     /* I'm not matching MS bug for bug here, because I doubt any app depends on
  82      * it:
  83      * - native does nothing if pwszDll is NULL
  84      * - native "succeeds" if pszFuncName is NULL, but the nonsensical entry
  85      *   it creates would never be used
  86      * - native returns an HRESULT rather than a Win32 error if pszOID is NULL.
  87      * Instead I disallow all of these with ERROR_INVALID_PARAMETER.
  88      */
  89     if (!pszFuncName || !pszOID || !pwszDll)
  90     {
  91         SetLastError(ERROR_INVALID_PARAMETER);
  92         return FALSE;
  93     }
  94
  95     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
  96     TRACE("Key name is %s\n", debugstr_a(szKey));
  97
  98     if (!szKey)
  99         return FALSE;
 100
 101     r = RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
 102     HeapFree(GetProcessHeap(), 0, szKey);
 103     if(r != ERROR_SUCCESS)
 104         return FALSE;
 105
 106     /* write the values */
 107     if (pszOverrideFuncName)
 108         RegSetValueExA(hKey, "FuncName", 0, REG_SZ, pszOverrideFuncName,
 109          lstrlenA(pszOverrideFuncName) + 1);
 110     RegSetValueExW(hKey, szDllName, 0, REG_SZ, (const BYTE*) pwszDll,
 111                     (lstrlenW(pwszDll) + 1) * sizeof (WCHAR));
 112
 113     RegCloseKey(hKey);
 114     return TRUE;
 115 }
 116
 117 BOOL WINAPI CryptUnregisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
 118  LPCSTR pszOID)
 119 {
 120     LPSTR szKey;
 121     LONG rc;
 122
 123     TRACE("%lx %s %s\n", dwEncodingType, pszFuncName, pszOID);
 124
 125     if (dwEncodingType >= PKCS_7_ASN_ENCODING)
 126         return TRUE;
 127
 128     if (!pszFuncName || !pszOID)
 129     {
 130         SetLastError(ERROR_INVALID_PARAMETER);
 131         return FALSE;
 132     }
 133
 134     szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
 135     rc = RegDeleteKeyA(HKEY_LOCAL_MACHINE, szKey);
 136     if (!rc)
 137         SetLastError(rc);
 138     return rc ? FALSE : TRUE;
 139 }
 140
 141 BOOL WINAPI CryptEncodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
 142  const void *pvStructInfo, BYTE *pbEncoded, DWORD *pcbEncoded)
 143 {
 144     FIXME("(0x%08lx, %s, %p, %p, %p): stub\n",
 145      dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
 146      "(integer value)", pvStructInfo, pbEncoded, pcbEncoded);
 147     return FALSE;
 148 }
 149
 150 BOOL WINAPI CryptEncodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
 151  const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara,
 152  BYTE *pbEncoded, DWORD *pcbEncoded)
 153 {
 154     FIXME("(0x%08lx, %s, %p, 0x%08lx, %p, %p, %p): stub\n",
 155      dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
 156      "(integer value)", pvStructInfo, dwFlags, pEncodePara, pbEncoded,
 157      pcbEncoded);
 158     return FALSE;
 159 }
 160
 161 BOOL WINAPI CryptDecodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
 162  const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo,
 163  DWORD *pcbStructInfo)
 164 {
 165     FIXME("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p): stub\n",
 166      dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
 167      "(integer value)", pbEncoded, cbEncoded, dwFlags, pvStructInfo,
 168      pcbStructInfo);
 169     return FALSE;
 170 }
 171
 172 BOOL WINAPI CryptDecodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
 173  const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
 174  PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
 175 {
 176     FIXME("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p, %p): stub\n",
 177      dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
 178      "(integer value)", pbEncoded, cbEncoded, dwFlags, pDecodePara,
 179      pvStructInfo, pcbStructInfo);
 180     return FALSE;
 181 }