2572 lines
78 KiB
C
2572 lines
78 KiB
C
/*
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* Copyright 2002 Mike McCormack for CodeWeavers
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* Copyright 2005 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* This file implements ASN.1 DER encoding and decoding of a limited set of
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* types. It isn't a full ASN.1 implementation. Microsoft implements BER
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* encoding of many of the basic types in msasn1.dll, but that interface is
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* undocumented, so I implement them here.
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*
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* References:
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* "A Layman's Guide to a Subset of ASN.1, BER, and DER", by Burton Kaliski
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* (available online, look for a PDF copy as the HTML versions tend to have
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* translation errors.)
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*
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* RFC3280, http://www.faqs.org/rfcs/rfc3280.html
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*
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* MSDN, especially:
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* http://msdn.microsoft.com/library/en-us/seccrypto/security/constants_for_cryptencodeobject_and_cryptdecodeobject.asp
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wincrypt.h"
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#include "winreg.h"
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#include "snmp.h"
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#include "wine/debug.h"
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/* a few asn.1 tags we need */
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#define ASN_BITSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x03)
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#define ASN_OCTETSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x04)
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#define ASN_ENUMERATED (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x0a)
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#define ASN_SETOF (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x11)
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#define ASN_NUMERICSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x12)
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#define ASN_PRINTABLESTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x13)
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#define ASN_IA5STRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x16)
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#define ASN_UTCTIME (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x17)
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#define ASN_GENERALTIME (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x18)
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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static const WCHAR szDllName[] = { 'D','l','l',0 };
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static char *CRYPT_GetKeyName(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID)
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{
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static const char szEncodingTypeFmt[] =
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"Software\\Microsoft\\Cryptography\\OID\\EncodingType %ld\\%s\\%s";
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UINT len;
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char numericOID[7]; /* enough for "#65535" */
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const char *oid;
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LPSTR szKey;
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/* MSDN says the encoding type is a mask, but it isn't treated that way.
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* (E.g., if dwEncodingType were 3, the key names "EncodingType 1" and
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* "EncodingType 2" would be expected if it were a mask. Instead native
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* stores values in "EncodingType 3".
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*/
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if (!HIWORD(pszOID))
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{
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snprintf(numericOID, sizeof(numericOID), "#%d", (int)pszOID);
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oid = numericOID;
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}
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else
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oid = pszOID;
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/* This is enough: the lengths of the two string parameters are explicitly
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* counted, and we need up to five additional characters for the encoding
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* type. These are covered by the "%d", "%s", and "%s" characters in the
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* format specifier that are removed by sprintf.
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*/
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len = sizeof(szEncodingTypeFmt) + lstrlenA(pszFuncName) + lstrlenA(oid);
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szKey = HeapAlloc(GetProcessHeap(), 0, len);
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if (szKey)
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sprintf(szKey, szEncodingTypeFmt, dwEncodingType, pszFuncName, oid);
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return szKey;
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}
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BOOL WINAPI CryptRegisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszDll, LPCSTR pszOverrideFuncName)
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{
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LONG r;
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HKEY hKey;
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LPSTR szKey;
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TRACE("%lx %s %s %s %s\n", dwEncodingType, pszFuncName, pszOID,
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debugstr_w(pwszDll), pszOverrideFuncName);
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/* This only registers functions for encoding certs, not messages */
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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/* Native does nothing pwszDll is NULL */
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if (!pwszDll)
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return TRUE;
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/* I'm not matching MS bug for bug here, because I doubt any app depends on
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* it:
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* - native "succeeds" if pszFuncName is NULL, but the nonsensical entry
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* it creates would never be used
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* - native returns an HRESULT rather than a Win32 error if pszOID is NULL.
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* Instead I disallow both of these with ERROR_INVALID_PARAMETER.
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*/
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if (!pszFuncName || !pszOID)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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TRACE("Key name is %s\n", debugstr_a(szKey));
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if (!szKey)
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return FALSE;
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r = RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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HeapFree(GetProcessHeap(), 0, szKey);
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if(r != ERROR_SUCCESS)
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return FALSE;
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/* write the values */
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if (pszOverrideFuncName)
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RegSetValueExA(hKey, "FuncName", 0, REG_SZ, pszOverrideFuncName,
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lstrlenA(pszOverrideFuncName) + 1);
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RegSetValueExW(hKey, szDllName, 0, REG_SZ, (const BYTE*) pwszDll,
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(lstrlenW(pwszDll) + 1) * sizeof (WCHAR));
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RegCloseKey(hKey);
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return TRUE;
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}
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BOOL WINAPI CryptUnregisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID)
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{
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LPSTR szKey;
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LONG rc;
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TRACE("%lx %s %s\n", dwEncodingType, pszFuncName, pszOID);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegDeleteKeyA(HKEY_LOCAL_MACHINE, szKey);
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HeapFree(GetProcessHeap(), 0, szKey);
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if (rc)
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SetLastError(rc);
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return rc ? FALSE : TRUE;
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}
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BOOL WINAPI CryptGetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszValueName, DWORD *pdwValueType, BYTE *pbValueData,
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DWORD *pcbValueData)
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{
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LPSTR szKey;
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LONG rc;
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HKEY hKey;
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TRACE("%lx %s %s %s %p %p %p\n", dwEncodingType, debugstr_a(pszFuncName),
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debugstr_a(pszOID), debugstr_w(pwszValueName), pdwValueType, pbValueData,
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pcbValueData);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID || !pwszValueName)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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HeapFree(GetProcessHeap(), 0, szKey);
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if (rc)
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SetLastError(rc);
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else
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{
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rc = RegQueryValueExW(hKey, pwszValueName, NULL, pdwValueType,
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pbValueData, pcbValueData);
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if (rc)
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SetLastError(rc);
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RegCloseKey(hKey);
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}
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return rc ? FALSE : TRUE;
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}
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BOOL WINAPI CryptSetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszValueName, DWORD dwValueType,
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const BYTE *pbValueData, DWORD cbValueData)
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{
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LPSTR szKey;
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LONG rc;
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HKEY hKey;
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TRACE("%lx %s %s %s %ld %p %ld\n", dwEncodingType, debugstr_a(pszFuncName),
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debugstr_a(pszOID), debugstr_w(pwszValueName), dwValueType, pbValueData,
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cbValueData);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID || !pwszValueName)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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HeapFree(GetProcessHeap(), 0, szKey);
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if (rc)
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SetLastError(rc);
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else
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{
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rc = RegSetValueExW(hKey, pwszValueName, 0, dwValueType, pbValueData,
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cbValueData);
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if (rc)
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SetLastError(rc);
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RegCloseKey(hKey);
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}
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return rc ? FALSE : TRUE;
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}
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/* Gets the registered function named szFuncName for dwCertEncodingType and
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* lpszStructType, or NULL if one could not be found. *lib will be set to the
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* handle of the module it's in, or NULL if no module was loaded. If the
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* return value is NULL, *lib will also be NULL, to simplify error handling.
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*/
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static void *CRYPT_GetFunc(DWORD dwCertEncodingType, LPCSTR lpszStructType,
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LPCSTR szFuncName, HMODULE *lib)
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{
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void *ret = NULL;
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char *szKey = CRYPT_GetKeyName(dwCertEncodingType, szFuncName,
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lpszStructType);
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const char *funcName;
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long r;
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HKEY hKey;
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DWORD type, size = 0;
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TRACE("(%08lx %s %s %p)\n", dwCertEncodingType, debugstr_a(lpszStructType),
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debugstr_a(szFuncName), lib);
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*lib = NULL;
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r = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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HeapFree(GetProcessHeap(), 0, szKey);
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if(r != ERROR_SUCCESS)
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return NULL;
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RegQueryValueExA(hKey, "FuncName", NULL, &type, NULL, &size);
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if (GetLastError() == ERROR_MORE_DATA && type == REG_SZ)
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{
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funcName = HeapAlloc(GetProcessHeap(), 0, size);
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RegQueryValueExA(hKey, "FuncName", NULL, &type, (LPBYTE)funcName,
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&size);
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}
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else
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funcName = szFuncName;
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RegQueryValueExW(hKey, szDllName, NULL, &type, NULL, &size);
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if (GetLastError() == ERROR_MORE_DATA && type == REG_SZ)
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{
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LPWSTR dllName = HeapAlloc(GetProcessHeap(), 0, size);
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RegQueryValueExW(hKey, szDllName, NULL, &type, (LPBYTE)dllName,
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&size);
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*lib = LoadLibraryW(dllName);
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if (*lib)
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{
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ret = GetProcAddress(*lib, funcName);
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if (!ret)
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{
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/* Unload the library, the caller doesn't want to unload it
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* when the return value is NULL.
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*/
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FreeLibrary(*lib);
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*lib = NULL;
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}
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}
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HeapFree(GetProcessHeap(), 0, dllName);
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}
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if (funcName != szFuncName)
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HeapFree(GetProcessHeap(), 0, (char *)funcName);
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TRACE("returning %p\n", ret);
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return ret;
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}
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typedef BOOL (WINAPI *CryptEncodeObjectFunc)(DWORD, LPCSTR, const void *,
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BYTE *, DWORD *);
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BOOL WINAPI CryptEncodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
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const void *pvStructInfo, BYTE *pbEncoded, DWORD *pcbEncoded)
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{
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BOOL ret = FALSE;
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HMODULE lib;
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CryptEncodeObjectFunc pCryptEncodeObject;
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TRACE("(0x%08lx, %s, %p, %p, %p)\n",
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dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
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"(integer value)", pvStructInfo, pbEncoded, pcbEncoded);
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if (!pbEncoded && !pcbEncoded)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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/* Try registered DLL first.. */
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pCryptEncodeObject =
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(CryptEncodeObjectFunc)CRYPT_GetFunc(dwCertEncodingType,
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lpszStructType, "CryptEncodeObject", &lib);
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if (pCryptEncodeObject)
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{
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ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType,
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pvStructInfo, pbEncoded, pcbEncoded);
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FreeLibrary(lib);
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}
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else
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{
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/* If not, use CryptEncodeObjectEx */
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ret = CryptEncodeObjectEx(dwCertEncodingType, lpszStructType,
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pvStructInfo, 0, NULL, pbEncoded, pcbEncoded);
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}
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return ret;
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}
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/* Helper function to check *pcbEncoded, set it to the required size, and
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* optionally to allocate memory. Assumes pbEncoded is not NULL.
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* If CRYPT_ENCODE_ALLOC_FLAG is set in dwFlags, *pbEncoded will be set to a
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* pointer to the newly allocated memory.
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*/
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static BOOL CRYPT_EncodeEnsureSpace(DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded,
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DWORD bytesNeeded)
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{
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BOOL ret = TRUE;
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if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
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{
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if (pEncodePara && pEncodePara->pfnAlloc)
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*(BYTE **)pbEncoded = pEncodePara->pfnAlloc(bytesNeeded);
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else
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*(BYTE **)pbEncoded = LocalAlloc(0, bytesNeeded);
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if (!*(BYTE **)pbEncoded)
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ret = FALSE;
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else
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*pcbEncoded = bytesNeeded;
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}
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else if (bytesNeeded > *pcbEncoded)
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{
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*pcbEncoded = bytesNeeded;
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SetLastError(ERROR_MORE_DATA);
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ret = FALSE;
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}
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return ret;
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}
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static BOOL CRYPT_EncodeLen(DWORD len, BYTE *pbEncoded, DWORD *pcbEncoded)
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{
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DWORD bytesNeeded, significantBytes = 0;
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if (len <= 0x7f)
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bytesNeeded = 1;
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else
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{
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DWORD temp;
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for (temp = len, significantBytes = sizeof(temp); !(temp & 0xff000000);
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temp <<= 8, significantBytes--)
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;
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bytesNeeded = significantBytes + 1;
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}
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if (!pbEncoded)
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{
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*pcbEncoded = bytesNeeded;
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return TRUE;
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}
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if (*pcbEncoded < bytesNeeded)
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{
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SetLastError(ERROR_MORE_DATA);
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return FALSE;
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}
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if (len <= 0x7f)
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*pbEncoded = (BYTE)len;
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else
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{
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DWORD i;
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*pbEncoded++ = significantBytes | 0x80;
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for (i = 0; i < significantBytes; i++)
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{
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*(pbEncoded + significantBytes - i - 1) = (BYTE)(len & 0xff);
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len >>= 8;
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}
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}
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*pcbEncoded = bytesNeeded;
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return TRUE;
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}
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static BOOL WINAPI CRYPT_AsnEncodeOid(DWORD dwCertEncodingType,
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LPCSTR pszObjId, BYTE *pbEncoded, DWORD *pcbEncoded)
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{
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DWORD bytesNeeded = 0, lenBytes;
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BOOL ret = TRUE;
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int firstPos = 0;
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BYTE firstByte = 0;
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if (pszObjId)
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{
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const char *ptr;
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int val1, val2;
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if (sscanf(pszObjId, "%d.%d.%n", &val1, &val2, &firstPos) != 2)
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{
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SetLastError(CRYPT_E_ASN1_ERROR);
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return FALSE;
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}
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bytesNeeded++;
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firstByte = val1 * 40 + val2;
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ptr = pszObjId + firstPos;
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while (ret && *ptr)
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{
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int pos;
|
|
|
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/* note I assume each component is at most 32-bits long in base 2 */
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if (sscanf(ptr, "%d%n", &val1, &pos) == 1)
|
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{
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if (val1 >= 0x10000000)
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bytesNeeded += 5;
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else if (val1 >= 0x200000)
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bytesNeeded += 4;
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else if (val1 >= 0x4000)
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bytesNeeded += 3;
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else if (val1 >= 0x80)
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bytesNeeded += 2;
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else
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bytesNeeded += 1;
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ptr += pos;
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if (*ptr == '.')
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ptr++;
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}
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else
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{
|
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SetLastError(CRYPT_E_ASN1_ERROR);
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return FALSE;
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}
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}
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CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
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}
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else
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lenBytes = 1;
|
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bytesNeeded += 1 + lenBytes;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pbEncoded < bytesNeeded)
|
|
{
|
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SetLastError(ERROR_MORE_DATA);
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ret = FALSE;
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}
|
|
else
|
|
{
|
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*pbEncoded++ = ASN_OBJECTIDENTIFIER;
|
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CRYPT_EncodeLen(bytesNeeded - 1 - lenBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
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if (pszObjId)
|
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{
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const char *ptr;
|
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int val, pos;
|
|
|
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*pbEncoded++ = firstByte;
|
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ptr = pszObjId + firstPos;
|
|
while (ret && *ptr)
|
|
{
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sscanf(ptr, "%d%n", &val, &pos);
|
|
{
|
|
unsigned char outBytes[5];
|
|
int numBytes, i;
|
|
|
|
if (val >= 0x10000000)
|
|
numBytes = 5;
|
|
else if (val >= 0x200000)
|
|
numBytes = 4;
|
|
else if (val >= 0x4000)
|
|
numBytes = 3;
|
|
else if (val >= 0x80)
|
|
numBytes = 2;
|
|
else
|
|
numBytes = 1;
|
|
for (i = numBytes; i > 0; i--)
|
|
{
|
|
outBytes[i - 1] = val & 0x7f;
|
|
val >>= 7;
|
|
}
|
|
for (i = 0; i < numBytes - 1; i++)
|
|
*pbEncoded++ = outBytes[i] | 0x80;
|
|
*pbEncoded++ = outBytes[i];
|
|
ptr += pos;
|
|
if (*ptr == '.')
|
|
ptr++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeNameValue(DWORD dwCertEncodingType,
|
|
CERT_NAME_VALUE *value, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BYTE tag;
|
|
DWORD bytesNeeded, lenBytes, encodedLen;
|
|
BOOL ret = TRUE;
|
|
|
|
switch (value->dwValueType)
|
|
{
|
|
case CERT_RDN_NUMERIC_STRING:
|
|
tag = ASN_NUMERICSTRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_PRINTABLE_STRING:
|
|
tag = ASN_PRINTABLESTRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_IA5_STRING:
|
|
tag = ASN_IA5STRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_ANY_TYPE:
|
|
/* explicitly disallowed */
|
|
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
|
|
return FALSE;
|
|
default:
|
|
FIXME("String type %ld unimplemented\n", value->dwValueType);
|
|
return FALSE;
|
|
}
|
|
CRYPT_EncodeLen(encodedLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + encodedLen;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = tag;
|
|
CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
switch (value->dwValueType)
|
|
{
|
|
case CERT_RDN_NUMERIC_STRING:
|
|
case CERT_RDN_PRINTABLE_STRING:
|
|
case CERT_RDN_IA5_STRING:
|
|
memcpy(pbEncoded, value->Value.pbData, value->Value.cbData);
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeRdnAttr(DWORD dwCertEncodingType,
|
|
CERT_RDN_ATTR *attr, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD bytesNeeded = 0, lenBytes, size;
|
|
BOOL ret;
|
|
|
|
ret = CRYPT_AsnEncodeOid(dwCertEncodingType, attr->pszObjId, NULL, &size);
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
/* hack: a CERT_RDN_ATTR is identical to a CERT_NAME_VALUE beginning
|
|
* with dwValueType, so "cast" it to get its encoded size
|
|
*/
|
|
ret = CRYPT_AsnEncodeNameValue(dwCertEncodingType,
|
|
(CERT_NAME_VALUE *)&attr->dwValueType, NULL, &size);
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SEQUENCE;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
|
|
&lenBytes);
|
|
pbEncoded += lenBytes;
|
|
size = bytesNeeded - 1 - lenBytes;
|
|
ret = CRYPT_AsnEncodeOid(dwCertEncodingType, attr->pszObjId,
|
|
pbEncoded, &size);
|
|
if (ret)
|
|
{
|
|
pbEncoded += size;
|
|
size = bytesNeeded - 1 - lenBytes - size;
|
|
ret = CRYPT_AsnEncodeNameValue(dwCertEncodingType,
|
|
(CERT_NAME_VALUE *)&attr->dwValueType, pbEncoded,
|
|
&size);
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int BLOBComp(const void *l, const void *r)
|
|
{
|
|
CRYPT_DER_BLOB *a = (CRYPT_DER_BLOB *)l, *b = (CRYPT_DER_BLOB *)r;
|
|
int ret;
|
|
|
|
if (!(ret = memcmp(a->pbData, b->pbData, min(a->cbData, b->cbData))))
|
|
ret = a->cbData - b->cbData;
|
|
return ret;
|
|
}
|
|
|
|
/* This encodes as a SET OF, which in DER must be lexicographically sorted.
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, CERT_RDN *rdn,
|
|
BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD bytesNeeded = 0, lenBytes, i;
|
|
BOOL ret;
|
|
CRYPT_DER_BLOB *blobs = NULL;
|
|
|
|
ret = TRUE;
|
|
if (rdn->cRDNAttr)
|
|
{
|
|
if (!rdn->rgRDNAttr)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
blobs = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
|
|
rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB));
|
|
if (!blobs)
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType, &rdn->rgRDNAttr[i],
|
|
NULL, &blobs[i].cbData);
|
|
if (ret)
|
|
bytesNeeded += blobs[i].cbData;
|
|
}
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (ret)
|
|
{
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
blobs[i].pbData = HeapAlloc(GetProcessHeap(), 0,
|
|
blobs[i].cbData);
|
|
if (!blobs[i].pbData)
|
|
ret = FALSE;
|
|
else
|
|
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType,
|
|
&rdn->rgRDNAttr[i], blobs[i].pbData, &blobs[i].cbData);
|
|
}
|
|
if (ret)
|
|
{
|
|
qsort(blobs, rdn->cRDNAttr, sizeof(CRYPT_DER_BLOB),
|
|
BLOBComp);
|
|
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SETOF;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
|
|
&lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
memcpy(pbEncoded, blobs[i].pbData, blobs[i].cbData);
|
|
pbEncoded += blobs[i].cbData;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
if (blobs)
|
|
{
|
|
for (i = 0; i < rdn->cRDNAttr; i++)
|
|
HeapFree(GetProcessHeap(), 0, blobs[i].pbData);
|
|
HeapFree(GetProcessHeap(), 0, blobs);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CERT_NAME_INFO *info = (CERT_NAME_INFO *)pvStructInfo;
|
|
DWORD bytesNeeded = 0, lenBytes, size, i;
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
if (info->cRDN && !info->rgRDN)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
TRACE("encoding name with %ld RDNs\n", info->cRDN);
|
|
ret = TRUE;
|
|
for (i = 0; ret && i < info->cRDN; i++)
|
|
{
|
|
ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], NULL,
|
|
&size);
|
|
if (ret)
|
|
bytesNeeded += size;
|
|
}
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (ret)
|
|
{
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
/* FIXME: could this be encoded using X509_SEQUENCE_OF_ANY? */
|
|
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &size);
|
|
pbEncoded += size;
|
|
for (i = 0; ret && i < info->cRDN; i++)
|
|
{
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i],
|
|
pbEncoded, &size);
|
|
if (ret)
|
|
{
|
|
pbEncoded += size;
|
|
bytesNeeded -= size;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeOctets(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CRYPT_DATA_BLOB *blob = (CRYPT_DATA_BLOB *)pvStructInfo;
|
|
DWORD bytesNeeded, lenBytes;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
/* FIXME: use exception handling to catch bogus pointers */
|
|
CRYPT_EncodeLen(blob->cbData, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + blob->cbData;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_OCTETSTRING;
|
|
CRYPT_EncodeLen(blob->cbData, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
if (blob->cbData)
|
|
memcpy(pbEncoded, blob->pbData, blob->cbData);
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeBits(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CRYPT_BIT_BLOB *blob = (CRYPT_BIT_BLOB *)pvStructInfo;
|
|
DWORD bytesNeeded, lenBytes, dataBytes;
|
|
BYTE unusedBits;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
/* FIXME: use exception handling to catch bogus pointers */
|
|
/* yep, MS allows cUnusedBits to be >= 8 */
|
|
if (blob->cbData * 8 > blob->cUnusedBits)
|
|
{
|
|
dataBytes = (blob->cbData * 8 - blob->cUnusedBits) / 8 + 1;
|
|
unusedBits = blob->cUnusedBits >= 8 ? blob->cUnusedBits / 8 :
|
|
blob->cUnusedBits;
|
|
}
|
|
else
|
|
{
|
|
dataBytes = 0;
|
|
unusedBits = 0;
|
|
}
|
|
CRYPT_EncodeLen(dataBytes + 1, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataBytes + 1;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_BITSTRING;
|
|
CRYPT_EncodeLen(dataBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = unusedBits;
|
|
if (dataBytes)
|
|
{
|
|
BYTE mask = 0xff << unusedBits;
|
|
|
|
if (dataBytes > 1)
|
|
{
|
|
memcpy(pbEncoded, blob->pbData, dataBytes - 1);
|
|
pbEncoded += dataBytes - 1;
|
|
}
|
|
*pbEncoded = *(blob->pbData + dataBytes - 1) & mask;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeInt(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
INT val, i;
|
|
BYTE significantBytes, padByte = 0, bytesNeeded;
|
|
BOOL neg = FALSE, pad = FALSE;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
|
|
memcpy(&val, pvStructInfo, sizeof(val));
|
|
/* Count the number of significant bytes. Temporarily swap sign for
|
|
* negatives so I count the minimum number of bytes.
|
|
*/
|
|
if (val < 0)
|
|
{
|
|
neg = TRUE;
|
|
val = -val;
|
|
}
|
|
for (significantBytes = sizeof(val); !(val & 0xff000000);
|
|
val <<= 8, significantBytes--)
|
|
;
|
|
if (neg)
|
|
{
|
|
val = -val;
|
|
if ((val & 0xff000000) < 0x80000000)
|
|
{
|
|
padByte = 0xff;
|
|
pad = TRUE;
|
|
}
|
|
}
|
|
else if ((val & 0xff000000) > 0x7f000000)
|
|
{
|
|
padByte = 0;
|
|
pad = TRUE;
|
|
}
|
|
bytesNeeded = 2 + significantBytes;
|
|
if (pad)
|
|
bytesNeeded++;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_INTEGER;
|
|
if (pad)
|
|
{
|
|
*pbEncoded++ = significantBytes + 1;
|
|
*pbEncoded++ = padByte;
|
|
}
|
|
else
|
|
*pbEncoded++ = significantBytes;
|
|
for (i = 0; i < significantBytes; i++, val <<= 8)
|
|
*(pbEncoded + i) = (BYTE)((val & 0xff000000) >> 24);
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD significantBytes, lenBytes;
|
|
BYTE padByte = 0, bytesNeeded;
|
|
BOOL pad = FALSE;
|
|
CRYPT_INTEGER_BLOB *blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
|
|
/* FIXME: use exception handling to protect against bogus pointers */
|
|
significantBytes = blob->cbData;
|
|
if (significantBytes)
|
|
{
|
|
if (blob->pbData[significantBytes - 1] & 0x80)
|
|
{
|
|
/* negative, lop off leading (little-endian) 0xffs */
|
|
for (; significantBytes > 0 &&
|
|
blob->pbData[significantBytes - 1] == 0xff; significantBytes--)
|
|
;
|
|
if (blob->pbData[significantBytes - 1] < 0x80)
|
|
{
|
|
padByte = 0xff;
|
|
pad = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* positive, lop off leading (little-endian) zeroes */
|
|
for (; significantBytes > 0 && !blob->pbData[significantBytes - 1];
|
|
significantBytes--)
|
|
;
|
|
if (blob->pbData[significantBytes - 1] > 0x7f)
|
|
{
|
|
padByte = 0;
|
|
pad = TRUE;
|
|
}
|
|
}
|
|
}
|
|
if (pad)
|
|
CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes);
|
|
else
|
|
CRYPT_EncodeLen(significantBytes, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + significantBytes;
|
|
if (pad)
|
|
bytesNeeded++;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_INTEGER;
|
|
if (pad)
|
|
{
|
|
CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = padByte;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
}
|
|
for (; significantBytes > 0; significantBytes--)
|
|
*(pbEncoded++) = blob->pbData[significantBytes - 1];
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeUnsignedInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD significantBytes, lenBytes;
|
|
BYTE bytesNeeded;
|
|
BOOL pad = FALSE;
|
|
CRYPT_INTEGER_BLOB *blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
|
|
/* FIXME: use exception handling to protect against bogus pointers */
|
|
significantBytes = blob->cbData;
|
|
if (significantBytes)
|
|
{
|
|
/* positive, lop off leading (little-endian) zeroes */
|
|
for (; significantBytes > 0 && !blob->pbData[significantBytes - 1];
|
|
significantBytes--)
|
|
;
|
|
if (blob->pbData[significantBytes - 1] > 0x7f)
|
|
pad = TRUE;
|
|
}
|
|
if (pad)
|
|
CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes);
|
|
else
|
|
CRYPT_EncodeLen(significantBytes, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + significantBytes;
|
|
if (pad)
|
|
bytesNeeded++;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_INTEGER;
|
|
if (pad)
|
|
{
|
|
CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = 0;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
}
|
|
for (; significantBytes > 0; significantBytes--)
|
|
*(pbEncoded++) = blob->pbData[significantBytes - 1];
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeEnumerated(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CRYPT_INTEGER_BLOB blob;
|
|
BOOL ret;
|
|
|
|
/* Encode as an unsigned integer, then change the tag to enumerated */
|
|
blob.cbData = sizeof(DWORD);
|
|
blob.pbData = (BYTE *)pvStructInfo;
|
|
ret = CRYPT_AsnEncodeUnsignedInteger(dwCertEncodingType,
|
|
X509_MULTI_BYTE_UINT, &blob, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
if (ret && pbEncoded)
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
pbEncoded[0] = ASN_ENUMERATED;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeUtcTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
/* sorry, magic number: enough for tag, len, YYMMDDHHMMSSZ\0. I use a
|
|
* temporary buffer because the output buffer is not NULL-terminated.
|
|
*/
|
|
char buf[16];
|
|
static const DWORD bytesNeeded = sizeof(buf) - 1;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
/* Sanity check the year, this is a two-digit year format */
|
|
if (!FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime))
|
|
return FALSE;
|
|
if (sysTime.wYear < 1950 || sysTime.wYear > 2050)
|
|
{
|
|
SetLastError(CRYPT_E_BAD_ENCODE);
|
|
return FALSE;
|
|
}
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
buf[0] = ASN_UTCTIME;
|
|
buf[1] = bytesNeeded - 2;
|
|
snprintf(buf + 2, sizeof(buf) - 2, "%02d%02d%02d%02d%02d%02dZ",
|
|
sysTime.wYear >= 2000 ? sysTime.wYear - 2000 : sysTime.wYear - 1900,
|
|
sysTime.wDay, sysTime.wMonth, sysTime.wHour, sysTime.wMinute,
|
|
sysTime.wSecond);
|
|
memcpy(pbEncoded, buf, bytesNeeded);
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeGeneralizedTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
/* sorry, magic number: enough for tag, len, YYYYMMDDHHMMSSZ\0. I use a
|
|
* temporary buffer because the output buffer is not NULL-terminated.
|
|
*/
|
|
char buf[18];
|
|
static const DWORD bytesNeeded = sizeof(buf) - 1;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime))
|
|
return FALSE;
|
|
if (!CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded,
|
|
bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
buf[0] = ASN_GENERALTIME;
|
|
buf[1] = bytesNeeded - 2;
|
|
snprintf(buf + 2, sizeof(buf) - 2, "%04d%02d%02d%02d%02d%02dZ",
|
|
sysTime.wYear, sysTime.wDay, sysTime.wMonth, sysTime.wHour,
|
|
sysTime.wMinute, sysTime.wSecond);
|
|
memcpy(pbEncoded, buf, bytesNeeded);
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeChoiceOfTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
/* Check the year, if it's in the UTCTime range call that encode func */
|
|
if (!FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime))
|
|
return FALSE;
|
|
if (sysTime.wYear >= 1950 && sysTime.wYear <= 2050)
|
|
ret = CRYPT_AsnEncodeUtcTime(dwCertEncodingType, lpszStructType,
|
|
pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
else
|
|
ret = CRYPT_AsnEncodeGeneralizedTime(dwCertEncodingType,
|
|
lpszStructType, pvStructInfo, dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
return ret;
|
|
}
|
|
|
|
typedef BOOL (WINAPI *CryptEncodeObjectExFunc)(DWORD, LPCSTR, const void *,
|
|
DWORD, PCRYPT_ENCODE_PARA, BYTE *, DWORD *);
|
|
|
|
BOOL WINAPI CryptEncodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara,
|
|
void *pvEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib = NULL;
|
|
CryptEncodeObjectExFunc encodeFunc = NULL;
|
|
|
|
TRACE("(0x%08lx, %s, %p, 0x%08lx, %p, %p, %p)\n",
|
|
dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
|
|
"(integer value)", pvStructInfo, dwFlags, pEncodePara, pvEncoded,
|
|
pcbEncoded);
|
|
|
|
if (!pvEncoded && !pcbEncoded)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING
|
|
&& (dwCertEncodingType & CMSG_ENCODING_TYPE_MASK) != PKCS_7_ASN_ENCODING)
|
|
{
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
return FALSE;
|
|
}
|
|
|
|
SetLastError(NOERROR);
|
|
if (!HIWORD(lpszStructType))
|
|
{
|
|
switch (LOWORD(lpszStructType))
|
|
{
|
|
case (WORD)X509_NAME:
|
|
encodeFunc = CRYPT_AsnEncodeName;
|
|
break;
|
|
case (WORD)X509_OCTET_STRING:
|
|
encodeFunc = CRYPT_AsnEncodeOctets;
|
|
break;
|
|
case (WORD)X509_BITS:
|
|
case (WORD)X509_KEY_USAGE:
|
|
encodeFunc = CRYPT_AsnEncodeBits;
|
|
break;
|
|
case (WORD)X509_INTEGER:
|
|
encodeFunc = CRYPT_AsnEncodeInt;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_INTEGER:
|
|
encodeFunc = CRYPT_AsnEncodeInteger;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_UINT:
|
|
encodeFunc = CRYPT_AsnEncodeUnsignedInteger;
|
|
break;
|
|
case (WORD)X509_ENUMERATED:
|
|
encodeFunc = CRYPT_AsnEncodeEnumerated;
|
|
break;
|
|
case (WORD)X509_CHOICE_OF_TIME:
|
|
encodeFunc = CRYPT_AsnEncodeChoiceOfTime;
|
|
break;
|
|
case (WORD)PKCS_UTC_TIME:
|
|
encodeFunc = CRYPT_AsnEncodeUtcTime;
|
|
break;
|
|
default:
|
|
FIXME("%d: unimplemented\n", LOWORD(lpszStructType));
|
|
}
|
|
}
|
|
else if (!strcmp(lpszStructType, szOID_RSA_signingTime))
|
|
encodeFunc = CRYPT_AsnEncodeUtcTime;
|
|
else if (!strcmp(lpszStructType, szOID_CRL_REASON_CODE))
|
|
encodeFunc = CRYPT_AsnEncodeEnumerated;
|
|
else if (!strcmp(lpszStructType, szOID_KEY_USAGE))
|
|
encodeFunc = CRYPT_AsnEncodeBits;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_KEY_IDENTIFIER))
|
|
encodeFunc = CRYPT_AsnEncodeOctets;
|
|
else
|
|
TRACE("OID %s not found or unimplemented, looking for DLL\n",
|
|
debugstr_a(lpszStructType));
|
|
if (!encodeFunc)
|
|
encodeFunc = (CryptEncodeObjectExFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, "CryptEncodeObjectEx", &lib);
|
|
if (encodeFunc)
|
|
ret = encodeFunc(dwCertEncodingType, lpszStructType, pvStructInfo,
|
|
dwFlags, pEncodePara, pvEncoded, pcbEncoded);
|
|
else
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|
|
|
|
typedef BOOL (WINAPI *CryptDecodeObjectFunc)(DWORD, LPCSTR, const BYTE *,
|
|
DWORD, DWORD, void *, DWORD *);
|
|
|
|
BOOL WINAPI CryptDecodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo,
|
|
DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib;
|
|
CryptDecodeObjectFunc pCryptDecodeObject;
|
|
|
|
TRACE("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p)\n",
|
|
dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
|
|
"(integer value)", pbEncoded, cbEncoded, dwFlags, pvStructInfo,
|
|
pcbStructInfo);
|
|
|
|
if (!pvStructInfo && !pcbStructInfo)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Try registered DLL first.. */
|
|
pCryptDecodeObject =
|
|
(CryptDecodeObjectFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, "CryptDecodeObject", &lib);
|
|
if (pCryptDecodeObject)
|
|
{
|
|
ret = pCryptDecodeObject(dwCertEncodingType, lpszStructType,
|
|
pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo);
|
|
FreeLibrary(lib);
|
|
}
|
|
else
|
|
{
|
|
/* If not, use CryptDecodeObjectEx */
|
|
ret = CryptDecodeObjectEx(dwCertEncodingType, lpszStructType, pbEncoded,
|
|
cbEncoded, dwFlags, NULL, pvStructInfo, pcbStructInfo);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Gets the number of length bytes from the given (leading) length byte */
|
|
#define GET_LEN_BYTES(b) ((b) <= 0x7f ? 1 : 1 + ((b) & 0x7f))
|
|
|
|
/* Helper function to get the encoded length of the data starting at pbEncoded,
|
|
* where pbEncoded[0] is the tag. If the data are too short to contain a
|
|
* length or if the length is too large for cbEncoded, sets an appropriate
|
|
* error code and returns FALSE.
|
|
*/
|
|
static BOOL WINAPI CRYPT_GetLen(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD *len)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[1] <= 0x7f)
|
|
{
|
|
*len = pbEncoded[1];
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
BYTE lenLen = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
if (lenLen > sizeof(DWORD))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
ret = FALSE;
|
|
}
|
|
else if (lenLen + 2 > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
DWORD out = 0;
|
|
|
|
pbEncoded += 2;
|
|
while (lenLen--)
|
|
{
|
|
out <<= 8;
|
|
out |= *pbEncoded++;
|
|
}
|
|
if (out + lenLen + 1 > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*len = out;
|
|
ret = TRUE;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Helper function to check *pcbStructInfo, set it to the required size, and
|
|
* optionally to allocate memory. Assumes pvStructInfo is not NULL.
|
|
* If CRYPT_DECODE_ALLOC_FLAG is set in dwFlags, *pvStructInfo will be set to a
|
|
* pointer to the newly allocated memory.
|
|
*/
|
|
static BOOL CRYPT_DecodeEnsureSpace(DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo,
|
|
DWORD bytesNeeded)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
{
|
|
if (pDecodePara && pDecodePara->pfnAlloc)
|
|
*(BYTE **)pvStructInfo = pDecodePara->pfnAlloc(bytesNeeded);
|
|
else
|
|
*(BYTE **)pvStructInfo = LocalAlloc(0, bytesNeeded);
|
|
if (!*(BYTE **)pvStructInfo)
|
|
ret = FALSE;
|
|
else
|
|
*pcbStructInfo = bytesNeeded;
|
|
}
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* FIXME: honor the CRYPT_DECODE_SHARE_OID_FLAG. */
|
|
static BOOL WINAPI CRYPT_AsnDecodeOid(DWORD dwCertEncodingType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, LPSTR pszObjId,
|
|
DWORD *pcbObjId)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD bytesNeeded, dataLen;
|
|
BYTE lenBytes;
|
|
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != ASN_OBJECTIDENTIFIER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
if (dataLen)
|
|
{
|
|
/* The largest possible string for the first two components is 2.175
|
|
* (= 2 * 40 + 175 = 255), so this is big enough.
|
|
*/
|
|
char firstTwo[6];
|
|
const BYTE *ptr;
|
|
|
|
snprintf(firstTwo, sizeof(firstTwo), "%d.%d",
|
|
pbEncoded[1 + lenBytes] / 40,
|
|
pbEncoded[1 + lenBytes] - (pbEncoded[1 + lenBytes] / 40) * 40);
|
|
bytesNeeded = strlen(firstTwo) + 1;
|
|
for (ptr = pbEncoded + 2 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
/* large enough for ".4000000" */
|
|
char str[9];
|
|
int val = 0;
|
|
|
|
while (ptr - pbEncoded - 1 - lenBytes < dataLen && (*ptr & 0x80))
|
|
{
|
|
val <<= 7;
|
|
val |= *ptr & 0x7f;
|
|
ptr++;
|
|
}
|
|
if (ptr - pbEncoded - 1 - lenBytes >= dataLen || (*ptr & 0x80))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
val <<= 7;
|
|
val |= *ptr++;
|
|
snprintf(str, sizeof(str), ".%d", val);
|
|
bytesNeeded += strlen(str);
|
|
}
|
|
}
|
|
if (!pszObjId)
|
|
*pcbObjId = bytesNeeded;
|
|
else if (*pcbObjId < bytesNeeded)
|
|
{
|
|
*pcbObjId = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
sprintf(pszObjId, "%d.%d", pbEncoded[1 + lenBytes] / 40,
|
|
pbEncoded[1 + lenBytes] - (pbEncoded[1 + lenBytes] / 40) * 40);
|
|
pszObjId += strlen(pszObjId);
|
|
for (ptr = pbEncoded + 2 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
int val = 0;
|
|
|
|
while (ptr - pbEncoded - 1 - lenBytes < dataLen &&
|
|
(*ptr & 0x80))
|
|
{
|
|
val <<= 7;
|
|
val |= *ptr & 0x7f;
|
|
ptr++;
|
|
}
|
|
val <<= 7;
|
|
val |= *ptr++;
|
|
sprintf(pszObjId, ".%d", val);
|
|
pszObjId += strlen(pszObjId);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
bytesNeeded = 0;
|
|
*pcbObjId = bytesNeeded;
|
|
return ret;
|
|
}
|
|
|
|
/* Warning: this assumes the address of value->Value.pbData is already set, in
|
|
* order to avoid overwriting memory. (In some cases, it may change it, if it
|
|
* doesn't copy anything to memory.) Be sure to set it correctly!
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeNameValue(DWORD dwCertEncodingType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, CERT_NAME_VALUE *value,
|
|
DWORD *pcbValue)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
BOOL ret = TRUE;
|
|
BYTE lenBytes;
|
|
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
break;
|
|
default:
|
|
FIXME("Unimplemented string type %02x\n", pbEncoded[0]);
|
|
SetLastError(OSS_UNIMPLEMENTED);
|
|
return FALSE;
|
|
}
|
|
bytesNeeded = sizeof(CERT_NAME_VALUE);
|
|
if (dataLen)
|
|
{
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
}
|
|
}
|
|
if (!value)
|
|
{
|
|
*pcbValue = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (*pcbValue < bytesNeeded)
|
|
{
|
|
*pcbValue = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
return FALSE;
|
|
}
|
|
*pcbValue = bytesNeeded;
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
value->dwValueType = CERT_RDN_NUMERIC_STRING;
|
|
break;
|
|
case ASN_PRINTABLESTRING:
|
|
value->dwValueType = CERT_RDN_PRINTABLE_STRING;
|
|
break;
|
|
case ASN_IA5STRING:
|
|
value->dwValueType = CERT_RDN_IA5_STRING;
|
|
break;
|
|
}
|
|
if (dataLen)
|
|
{
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
value->Value.cbData = dataLen;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
value->Value.pbData = (BYTE *)pbEncoded + 1 + lenBytes;
|
|
else
|
|
{
|
|
if (!value->Value.pbData)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_INTERNAL);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
memcpy(value->Value.pbData, pbEncoded + 1 + lenBytes,
|
|
dataLen);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
value->Value.cbData = 0;
|
|
value->Value.pbData = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdnAttr(DWORD dwCertEncodingType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, CERT_RDN_ATTR *attr,
|
|
DWORD *pcbAttr)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD bytesNeeded, dataLen, size;
|
|
BYTE lenBytes;
|
|
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
/* The data length must be at least 4, two for the tag and length for the
|
|
* OID, and two for the string (assuming both have short-form lengths.)
|
|
*/
|
|
if (dataLen < 4)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[0] != (ASN_CONSTRUCTOR | ASN_SEQUENCE))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
bytesNeeded = sizeof(CERT_RDN_ATTR);
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
ret = CRYPT_AsnDecodeOid(dwCertEncodingType, pbEncoded + 1 + lenBytes,
|
|
cbEncoded - 1 - lenBytes, dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
/* ugly: need to know the size of the next element of the sequence,
|
|
* so get it directly
|
|
*/
|
|
DWORD objIdOfset = 1 + lenBytes, objIdLen, nameValueOffset = 0;
|
|
|
|
ret = CRYPT_GetLen(pbEncoded + objIdOfset, cbEncoded - objIdOfset,
|
|
&objIdLen);
|
|
bytesNeeded += size;
|
|
/* hack: like encoding, this takes advantage of the fact that the rest
|
|
* of the structure is identical to a CERT_NAME_VALUE.
|
|
*/
|
|
if (ret)
|
|
{
|
|
nameValueOffset = objIdOfset + objIdLen + 1 +
|
|
GET_LEN_BYTES(pbEncoded[objIdOfset]);
|
|
ret = CRYPT_AsnDecodeNameValue(dwCertEncodingType,
|
|
pbEncoded + nameValueOffset, cbEncoded - nameValueOffset, dwFlags,
|
|
NULL, &size);
|
|
}
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
if (!attr)
|
|
*pcbAttr = bytesNeeded;
|
|
else if (*pcbAttr < bytesNeeded)
|
|
{
|
|
*pcbAttr = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
BYTE *originalData = attr->Value.pbData;
|
|
|
|
*pcbAttr = bytesNeeded;
|
|
/* strange: decode the value first, because it has a counted
|
|
* size, and we can store the OID after it. Keep track of the
|
|
* original data pointer, we'll need to know whether it was
|
|
* changed.
|
|
*/
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeNameValue(dwCertEncodingType,
|
|
pbEncoded + nameValueOffset, cbEncoded - nameValueOffset,
|
|
dwFlags, (CERT_NAME_VALUE *)&attr->dwValueType, &size);
|
|
if (ret)
|
|
{
|
|
if (objIdLen)
|
|
{
|
|
/* if the data were copied to the original location,
|
|
* the OID goes after. Otherwise it goes in the
|
|
* spot originally reserved for the data.
|
|
*/
|
|
if (attr->Value.pbData == originalData)
|
|
attr->pszObjId = (LPSTR)(attr->Value.pbData +
|
|
attr->Value.cbData);
|
|
else
|
|
attr->pszObjId = originalData;
|
|
size = bytesNeeded - size;
|
|
ret = CRYPT_AsnDecodeOid(dwCertEncodingType,
|
|
pbEncoded + objIdOfset, cbEncoded - objIdOfset,
|
|
dwFlags, attr->pszObjId, &size);
|
|
}
|
|
else
|
|
attr->pszObjId = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdn(DWORD dwCertEncodingType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, CERT_RDN *rdn,
|
|
DWORD *pcbRdn)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD bytesNeeded, dataLen, cRDNAttr = 0;
|
|
BYTE lenBytes;
|
|
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != (ASN_CONSTRUCTOR | ASN_SETOF))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
bytesNeeded = sizeof(CERT_RDN);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
DWORD size;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
ret = CRYPT_AsnDecodeRdnAttr(dwCertEncodingType, ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cRDNAttr++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!rdn)
|
|
{
|
|
*pcbRdn = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (*pcbRdn < bytesNeeded)
|
|
{
|
|
*pcbRdn = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
return FALSE;
|
|
}
|
|
*pcbRdn = bytesNeeded;
|
|
rdn->cRDNAttr = cRDNAttr;
|
|
if (rdn->cRDNAttr == 0)
|
|
rdn->rgRDNAttr = NULL;
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
|
|
rdn->rgRDNAttr = (CERT_RDN_ATTR *)((BYTE *)rdn + sizeof(CERT_RDN));
|
|
nextData = (BYTE *)rdn->rgRDNAttr +
|
|
rdn->cRDNAttr * sizeof(CERT_RDN_ATTR);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret && i < cRDNAttr &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; i++)
|
|
{
|
|
rdn->rgRDNAttr[i].Value.pbData = nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeRdnAttr(dwCertEncodingType, ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, &rdn->rgRDNAttr[i],
|
|
&size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
bytesNeeded -= size;
|
|
/* If dwFlags & CRYPT_DECODE_NOCOPY_FLAG, the data may not
|
|
* have been copied.
|
|
*/
|
|
if (rdn->rgRDNAttr[i].Value.pbData == nextData)
|
|
nextData += rdn->rgRDNAttr[i].Value.cbData;
|
|
/* Ugly: the OID, if copied, is stored in memory after the
|
|
* value, so increment by its string length if it's set and
|
|
* points here.
|
|
*/
|
|
if ((const BYTE *)rdn->rgRDNAttr[i].pszObjId == nextData)
|
|
nextData += strlen(rdn->rgRDNAttr[i].pszObjId) + 1;
|
|
ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD bytesNeeded, dataLen, cRDN = 0;
|
|
BYTE lenBytes;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != (ASN_CONSTRUCTOR | ASN_SEQUENCEOF))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
bytesNeeded = sizeof(CERT_NAME_INFO);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
DWORD size;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret && ptr - pbEncoded - 1 -
|
|
lenBytes < dataLen; )
|
|
{
|
|
ret = CRYPT_AsnDecodeRdn(dwCertEncodingType, ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cRDN++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
CERT_NAME_INFO *info;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (CERT_NAME_INFO *)pvStructInfo;
|
|
info->cRDN = cRDN;
|
|
if (info->cRDN == 0)
|
|
info->rgRDN = NULL;
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
|
|
info->rgRDN = (CERT_RDN *)((BYTE *)pvStructInfo +
|
|
sizeof(CERT_NAME_INFO));
|
|
nextData = (BYTE *)info->rgRDN + info->cRDN * sizeof(CERT_RDN);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret && i < cRDN &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; i++)
|
|
{
|
|
info->rgRDN[i].rgRDNAttr = (CERT_RDN_ATTR *)nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeRdn(dwCertEncodingType, ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, &info->rgRDN[i],
|
|
&size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
nextData += size;
|
|
bytesNeeded -= size;
|
|
ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeOctets(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
CRYPT_DATA_BLOB *blob;
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != ASN_OCTETSTRING)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
bytesNeeded = sizeof(CRYPT_DATA_BLOB);
|
|
else
|
|
bytesNeeded = dataLen + sizeof(CRYPT_DATA_BLOB);
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_DATA_BLOB *)pvStructInfo;
|
|
blob->cbData = dataLen;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
blob->pbData = (BYTE *)pbEncoded + 1 + GET_LEN_BYTES(pbEncoded[1]);
|
|
else
|
|
{
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_DATA_BLOB);
|
|
if (blob->cbData)
|
|
memcpy(blob->pbData, pbEncoded + 1 + GET_LEN_BYTES(pbEncoded[1]),
|
|
blob->cbData);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBits(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
CRYPT_BIT_BLOB *blob;
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != ASN_BITSTRING)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
bytesNeeded = sizeof(CRYPT_BIT_BLOB);
|
|
else
|
|
bytesNeeded = dataLen - 1 + sizeof(CRYPT_BIT_BLOB);
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_BIT_BLOB *)pvStructInfo;
|
|
blob->cbData = dataLen - 1;
|
|
blob->cUnusedBits = *(pbEncoded + 1 + GET_LEN_BYTES(pbEncoded[1]));
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
blob->pbData = (BYTE *)pbEncoded + 2 + GET_LEN_BYTES(pbEncoded[1]);
|
|
else
|
|
{
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_BIT_BLOB);
|
|
if (blob->cbData)
|
|
{
|
|
BYTE mask = 0xff << blob->cUnusedBits;
|
|
|
|
memcpy(blob->pbData, pbEncoded + 2 + GET_LEN_BYTES(pbEncoded[1]),
|
|
blob->cbData);
|
|
blob->pbData[blob->cbData - 1] &= mask;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeInt(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
int val, i;
|
|
|
|
if (!pbEncoded || !cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(int);
|
|
return TRUE;
|
|
}
|
|
if (pbEncoded[0] != ASN_INTEGER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] == 0)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] > sizeof(int))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[2] & 0x80)
|
|
{
|
|
/* initialize to a negative value to sign-extend */
|
|
val = -1;
|
|
}
|
|
else
|
|
val = 0;
|
|
for (i = 0; i < pbEncoded[1]; i++)
|
|
{
|
|
val <<= 8;
|
|
val |= pbEncoded[2 + i];
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, sizeof(int)))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
memcpy(pvStructInfo, &val, sizeof(int));
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
BYTE lenBytes;
|
|
CRYPT_INTEGER_BLOB *blob;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != ASN_INTEGER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
bytesNeeded = dataLen + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
blob->cbData = dataLen;
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (blob->cbData)
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < blob->cbData; i++)
|
|
blob->pbData[i] = *(pbEncoded + 1 + lenBytes + dataLen - i - 1);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnsignedInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
BYTE lenBytes;
|
|
CRYPT_INTEGER_BLOB *blob;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen))
|
|
return FALSE;
|
|
if (pbEncoded[0] != ASN_INTEGER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
bytesNeeded = dataLen + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, bytesNeeded))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
blob->cbData = dataLen;
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_INTEGER_BLOB);
|
|
/* remove leading zero byte if it exists */
|
|
if (blob->cbData && *(pbEncoded + 1 + lenBytes) == 0)
|
|
{
|
|
blob->cbData--;
|
|
blob->pbData++;
|
|
}
|
|
if (blob->cbData)
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < blob->cbData; i++)
|
|
blob->pbData[i] = *(pbEncoded + 1 + lenBytes + pbEncoded[1] - i -
|
|
1);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeEnumerated(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
unsigned int val = 0, i;
|
|
|
|
/* Based on CRYPT_AsnDecodeInt, but interprets as unsigned */
|
|
if (!pbEncoded || !cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(int);
|
|
return TRUE;
|
|
}
|
|
if (pbEncoded[0] != ASN_ENUMERATED)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] == 0)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
/* A little strange looking, but we have to accept a sign byte: 0xffffffff
|
|
* gets encoded as 0a 05 00 ff ff ff ff. Also, assuming a small length is
|
|
* okay here, it has to be in short form.
|
|
*/
|
|
if (pbEncoded[1] > sizeof(unsigned int) + 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
return FALSE;
|
|
}
|
|
for (i = 0; i < pbEncoded[1]; i++)
|
|
{
|
|
val <<= 8;
|
|
val |= pbEncoded[2 + i];
|
|
}
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, sizeof(unsigned int)))
|
|
return FALSE;
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
memcpy(pvStructInfo, &val, sizeof(unsigned int));
|
|
return TRUE;
|
|
}
|
|
|
|
#define CRYPT_TIME_GET_DIGITS(pbEncoded, len, numDigits, word) \
|
|
do { \
|
|
BYTE i; \
|
|
\
|
|
(word) = 0; \
|
|
for (i = 0; (len) > 0 && i < (numDigits); i++, (len)--) \
|
|
{ \
|
|
if (!isdigit(*(pbEncoded))) \
|
|
{ \
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT); \
|
|
return FALSE; \
|
|
} \
|
|
(word) *= 10; \
|
|
(word) += *(pbEncoded)++ - '0'; \
|
|
} \
|
|
} while (0)
|
|
|
|
static BOOL CRYPT_AsnDecodeTimeZone(const BYTE *pbEncoded, DWORD len,
|
|
SYSTEMTIME *sysTime)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
if (len >= 3 && (*pbEncoded == '+' || *pbEncoded == '-'))
|
|
{
|
|
WORD hours, minutes = 0;
|
|
BYTE sign = *pbEncoded++;
|
|
|
|
len--;
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, hours);
|
|
if (hours >= 24)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
goto end;
|
|
}
|
|
if (len >= 2)
|
|
{
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, minutes);
|
|
if (minutes >= 60)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
goto end;
|
|
}
|
|
}
|
|
if (sign == '+')
|
|
{
|
|
sysTime->wHour += hours;
|
|
sysTime->wMinute += minutes;
|
|
}
|
|
else
|
|
{
|
|
if (hours > sysTime->wHour)
|
|
{
|
|
sysTime->wDay--;
|
|
sysTime->wHour = 24 - (hours - sysTime->wHour);
|
|
}
|
|
else
|
|
sysTime->wHour -= hours;
|
|
if (minutes > sysTime->wMinute)
|
|
{
|
|
sysTime->wHour--;
|
|
sysTime->wMinute = 60 - (minutes - sysTime->wMinute);
|
|
}
|
|
else
|
|
sysTime->wMinute -= minutes;
|
|
}
|
|
}
|
|
end:
|
|
return ret;
|
|
}
|
|
|
|
#define MIN_ENCODED_TIME_LENGTH 10
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUtcTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
SYSTEMTIME sysTime = { 0 };
|
|
BYTE len;
|
|
BOOL ret = TRUE;
|
|
|
|
if (!pbEncoded || !cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(FILETIME);
|
|
return TRUE;
|
|
}
|
|
if (pbEncoded[0] != ASN_UTCTIME)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] > 0x7f)
|
|
{
|
|
/* long-form date strings really can't be valid */
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
len = pbEncoded[1];
|
|
if (len < MIN_ENCODED_TIME_LENGTH)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
pbEncoded += 2;
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wYear);
|
|
if (sysTime.wYear >= 50)
|
|
sysTime.wYear += 1900;
|
|
else
|
|
sysTime.wYear += 2000;
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wMonth);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wDay);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wHour);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wMinute);
|
|
if (len > 0)
|
|
{
|
|
if (len >= 2 && isdigit(*pbEncoded) && isdigit(*(pbEncoded + 1)))
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wSecond);
|
|
else if (isdigit(*pbEncoded))
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 1, sysTime.wSecond);
|
|
ret = CRYPT_AsnDecodeTimeZone(pbEncoded, len, &sysTime);
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, sizeof(FILETIME)))
|
|
ret = FALSE;
|
|
else
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
ret = SystemTimeToFileTime(&sysTime, (FILETIME *)pvStructInfo);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeGeneralizedTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
SYSTEMTIME sysTime = { 0 };
|
|
BYTE len;
|
|
BOOL ret = TRUE;
|
|
|
|
if (!pbEncoded || !cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(FILETIME);
|
|
return TRUE;
|
|
}
|
|
if (pbEncoded[0] != ASN_GENERALTIME)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] > 0x7f)
|
|
{
|
|
/* long-form date strings really can't be valid */
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
len = pbEncoded[1];
|
|
if (len < MIN_ENCODED_TIME_LENGTH)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
pbEncoded += 2;
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 4, sysTime.wYear);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wMonth);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wDay);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wHour);
|
|
if (len > 0)
|
|
{
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wMinute);
|
|
if (len > 0)
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, sysTime.wSecond);
|
|
if (len > 0 && (*pbEncoded == '.' || *pbEncoded == ','))
|
|
{
|
|
BYTE digits;
|
|
|
|
pbEncoded++;
|
|
len--;
|
|
digits = min(len, 3); /* workaround macro weirdness */
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, digits,
|
|
sysTime.wMilliseconds);
|
|
}
|
|
ret = CRYPT_AsnDecodeTimeZone(pbEncoded, len, &sysTime);
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, sizeof(FILETIME)))
|
|
ret = FALSE;
|
|
else
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
ret = SystemTimeToFileTime(&sysTime, (FILETIME *)pvStructInfo);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeChoiceOfTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!pbEncoded || !cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(FILETIME);
|
|
return TRUE;
|
|
}
|
|
|
|
if (pbEncoded[0] == ASN_UTCTIME)
|
|
ret = CRYPT_AsnDecodeUtcTime(dwCertEncodingType, lpszStructType,
|
|
pbEncoded, cbEncoded, dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo);
|
|
else if (pbEncoded[0] == ASN_GENERALTIME)
|
|
ret = CRYPT_AsnDecodeGeneralizedTime(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded, dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo);
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
typedef BOOL (WINAPI *CryptDecodeObjectExFunc)(DWORD, LPCSTR, const BYTE *,
|
|
DWORD, DWORD, PCRYPT_DECODE_PARA, void *, DWORD *);
|
|
|
|
BOOL WINAPI CryptDecodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib = NULL;
|
|
CryptDecodeObjectExFunc decodeFunc = NULL;
|
|
|
|
TRACE("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p, %p)\n",
|
|
dwCertEncodingType, HIWORD(lpszStructType) ? debugstr_a(lpszStructType) :
|
|
"(integer value)", pbEncoded, cbEncoded, dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo);
|
|
|
|
if (!pvStructInfo && !pcbStructInfo)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING
|
|
&& (dwCertEncodingType & CMSG_ENCODING_TYPE_MASK) != PKCS_7_ASN_ENCODING)
|
|
{
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
return FALSE;
|
|
}
|
|
|
|
SetLastError(NOERROR);
|
|
if (!HIWORD(lpszStructType))
|
|
{
|
|
switch (LOWORD(lpszStructType))
|
|
{
|
|
case (WORD)X509_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeName;
|
|
break;
|
|
case (WORD)X509_OCTET_STRING:
|
|
decodeFunc = CRYPT_AsnDecodeOctets;
|
|
break;
|
|
case (WORD)X509_BITS:
|
|
case (WORD)X509_KEY_USAGE:
|
|
decodeFunc = CRYPT_AsnDecodeBits;
|
|
break;
|
|
case (WORD)X509_INTEGER:
|
|
decodeFunc = CRYPT_AsnDecodeInt;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_INTEGER:
|
|
decodeFunc = CRYPT_AsnDecodeInteger;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_UINT:
|
|
decodeFunc = CRYPT_AsnDecodeUnsignedInteger;
|
|
break;
|
|
case (WORD)X509_ENUMERATED:
|
|
decodeFunc = CRYPT_AsnDecodeEnumerated;
|
|
break;
|
|
case (WORD)X509_CHOICE_OF_TIME:
|
|
decodeFunc = CRYPT_AsnDecodeChoiceOfTime;
|
|
break;
|
|
case (WORD)PKCS_UTC_TIME:
|
|
decodeFunc = CRYPT_AsnDecodeUtcTime;
|
|
break;
|
|
default:
|
|
FIXME("%d: unimplemented\n", LOWORD(lpszStructType));
|
|
}
|
|
}
|
|
else if (!strcmp(lpszStructType, szOID_RSA_signingTime))
|
|
decodeFunc = CRYPT_AsnDecodeUtcTime;
|
|
else if (!strcmp(lpszStructType, szOID_CRL_REASON_CODE))
|
|
decodeFunc = CRYPT_AsnDecodeEnumerated;
|
|
else if (!strcmp(lpszStructType, szOID_KEY_USAGE))
|
|
decodeFunc = CRYPT_AsnDecodeBits;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_KEY_IDENTIFIER))
|
|
decodeFunc = CRYPT_AsnDecodeOctets;
|
|
else
|
|
TRACE("OID %s not found or unimplemented, looking for DLL\n",
|
|
debugstr_a(lpszStructType));
|
|
if (!decodeFunc)
|
|
decodeFunc = (CryptDecodeObjectExFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, "CryptDecodeObjectEx", &lib);
|
|
if (decodeFunc)
|
|
ret = decodeFunc(dwCertEncodingType, lpszStructType, pbEncoded,
|
|
cbEncoded, dwFlags, pDecodePara, pvStructInfo, pcbStructInfo);
|
|
else
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|