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4175 lines
149 KiB
C
4175 lines
149 KiB
C
/*
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* This file implements ASN.1 DER decoding of a limited set of types.
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* 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 <assert.h>
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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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#define NONAMELESSUNION
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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 "winnls.h"
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#include "snmp.h"
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#include "wine/debug.h"
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#include "wine/exception.h"
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#include "crypt32_private.h"
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/* This is a bit arbitrary, but to set some limit: */
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#define MAX_ENCODED_LEN 0x02000000
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#define ASN_FLAGS_MASK 0xe0
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#define ASN_TYPE_MASK 0x1f
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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struct GenericArray
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{
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DWORD cItems;
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BYTE *rgItems;
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};
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typedef BOOL (WINAPI *CryptDecodeObjectFunc)(DWORD, LPCSTR, const BYTE *,
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DWORD, DWORD, void *, DWORD *);
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typedef BOOL (WINAPI *CryptDecodeObjectExFunc)(DWORD, LPCSTR, const BYTE *,
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DWORD, DWORD, PCRYPT_DECODE_PARA, void *, DWORD *);
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/* Prototypes for built-in decoders. They follow the Ex style prototypes.
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* The dwCertEncodingType and lpszStructType are ignored by the built-in
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* functions, but the parameters are retained to simplify CryptDecodeObjectEx,
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* since it must call functions in external DLLs that follow these signatures.
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*/
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static BOOL WINAPI CRYPT_AsnDecodeChoiceOfTime(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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static BOOL WINAPI CRYPT_AsnDecodePubKeyInfoInternal(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Like CRYPT_AsnDecodeExtensions, except assumes rgExtension is set ahead of
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* time, doesn't do memory allocation, and doesn't do exception handling.
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* (This isn't intended to be the externally-called one.)
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*/
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static BOOL WINAPI CRYPT_AsnDecodeExtensionsInternal(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Assumes algo->Parameters.pbData is set ahead of time. Internal func. */
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static BOOL WINAPI CRYPT_AsnDecodeAlgorithmId(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Internal function */
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static BOOL WINAPI CRYPT_AsnDecodeBool(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Assumes the CRYPT_DATA_BLOB's pbData member has been initialized */
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static BOOL WINAPI CRYPT_AsnDecodeOctetsInternal(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Like CRYPT_AsnDecodeBits, but assumes the CRYPT_INTEGER_BLOB's pbData
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* member has been initialized, doesn't do exception handling, and doesn't do
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* memory allocation.
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*/
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static BOOL WINAPI CRYPT_AsnDecodeBitsInternal(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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static BOOL WINAPI CRYPT_AsnDecodeBits(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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static BOOL WINAPI CRYPT_AsnDecodeInt(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Like CRYPT_AsnDecodeInteger, but assumes the CRYPT_INTEGER_BLOB's pbData
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* member has been initialized, doesn't do exception handling, and doesn't do
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* memory allocation. Also doesn't check tag, assumes the caller has checked
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* it.
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*/
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static BOOL WINAPI CRYPT_AsnDecodeIntegerInternal(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo);
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/* Like CRYPT_AsnDecodeInteger, but unsigned. */
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static BOOL WINAPI CRYPT_AsnDecodeUnsignedIntegerInternal(
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DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
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DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
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void *pvStructInfo, DWORD *pcbStructInfo);
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BOOL WINAPI CryptDecodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
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const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo,
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DWORD *pcbStructInfo)
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{
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static HCRYPTOIDFUNCSET set = NULL;
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BOOL ret = FALSE;
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CryptDecodeObjectFunc pCryptDecodeObject;
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HCRYPTOIDFUNCADDR hFunc;
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TRACE("(0x%08x, %s, %p, %d, 0x%08x, %p, %p)\n", dwCertEncodingType,
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debugstr_a(lpszStructType), pbEncoded, cbEncoded, dwFlags,
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pvStructInfo, pcbStructInfo);
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if (!pvStructInfo && !pcbStructInfo)
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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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if (!set)
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set = CryptInitOIDFunctionSet(CRYPT_OID_DECODE_OBJECT_FUNC, 0);
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CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0,
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(void **)&pCryptDecodeObject, &hFunc);
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if (pCryptDecodeObject)
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{
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ret = pCryptDecodeObject(dwCertEncodingType, lpszStructType,
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pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo);
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CryptFreeOIDFunctionAddress(hFunc, 0);
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}
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else
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{
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/* If not, use CryptDecodeObjectEx */
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ret = CryptDecodeObjectEx(dwCertEncodingType, lpszStructType, pbEncoded,
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cbEncoded, dwFlags, NULL, pvStructInfo, pcbStructInfo);
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}
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return ret;
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}
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/* Gets the number of length bytes from the given (leading) length byte */
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#define GET_LEN_BYTES(b) ((b) <= 0x7f ? 1 : 1 + ((b) & 0x7f))
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/* Helper function to get the encoded length of the data starting at pbEncoded,
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* where pbEncoded[0] is the tag. If the data are too short to contain a
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* length or if the length is too large for cbEncoded, sets an appropriate
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* error code and returns FALSE.
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*/
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static BOOL WINAPI CRYPT_GetLen(const BYTE *pbEncoded, DWORD cbEncoded,
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DWORD *len)
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{
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BOOL ret;
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if (cbEncoded <= 1)
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{
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SetLastError(CRYPT_E_ASN1_CORRUPT);
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ret = FALSE;
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}
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else if (pbEncoded[1] <= 0x7f)
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{
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if (pbEncoded[1] + 1 > cbEncoded)
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{
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SetLastError(CRYPT_E_ASN1_EOD);
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ret = FALSE;
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}
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else
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{
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*len = pbEncoded[1];
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ret = TRUE;
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}
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}
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else if (pbEncoded[1] == 0x80)
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{
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FIXME("unimplemented for indefinite-length encoding\n");
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SetLastError(CRYPT_E_ASN1_CORRUPT);
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ret = FALSE;
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}
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else
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{
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BYTE lenLen = GET_LEN_BYTES(pbEncoded[1]);
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if (lenLen > sizeof(DWORD) + 1)
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{
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SetLastError(CRYPT_E_ASN1_LARGE);
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ret = FALSE;
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}
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else if (lenLen + 2 > cbEncoded)
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{
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SetLastError(CRYPT_E_ASN1_CORRUPT);
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ret = FALSE;
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}
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else
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{
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DWORD out = 0;
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pbEncoded += 2;
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while (--lenLen)
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{
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out <<= 8;
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out |= *pbEncoded++;
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}
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if (out + lenLen + 1 > cbEncoded)
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{
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SetLastError(CRYPT_E_ASN1_EOD);
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ret = FALSE;
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}
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else
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{
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*len = out;
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ret = TRUE;
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}
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}
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}
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return ret;
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}
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/* Helper function to check *pcbStructInfo, set it to the required size, and
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* optionally to allocate memory. Assumes pvStructInfo is not NULL.
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* If CRYPT_DECODE_ALLOC_FLAG is set in dwFlags, *pvStructInfo 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_DecodeEnsureSpace(DWORD dwFlags,
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PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo,
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DWORD bytesNeeded)
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{
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BOOL ret = TRUE;
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if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
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{
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if (pDecodePara && pDecodePara->pfnAlloc)
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*(BYTE **)pvStructInfo = pDecodePara->pfnAlloc(bytesNeeded);
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else
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*(BYTE **)pvStructInfo = LocalAlloc(0, bytesNeeded);
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if (!*(BYTE **)pvStructInfo)
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ret = FALSE;
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else
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*pcbStructInfo = bytesNeeded;
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}
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else if (*pcbStructInfo < bytesNeeded)
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{
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*pcbStructInfo = 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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/* tag:
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* The expected tag of the item. If tag is 0, decodeFunc is called
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* regardless of the tag value seen.
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* offset:
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* A sequence is decoded into a struct. The offset member is the
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* offset of this item within that struct.
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* decodeFunc:
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* The decoder function to use. If this is NULL, then the member isn't
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* decoded, but minSize space is reserved for it.
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* minSize:
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* The minimum amount of space occupied after decoding. You must set this.
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* optional:
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* If true, and the tag doesn't match the expected tag for this item,
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* or the decodeFunc fails with CRYPT_E_ASN1_BADTAG, then minSize space is
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* filled with 0 for this member.
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* hasPointer, pointerOffset:
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* If the item has dynamic data, set hasPointer to TRUE, pointerOffset to
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* the offset within the struct of the data pointer (or to the
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* first data pointer, if more than one exist).
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* size:
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* Used by CRYPT_AsnDecodeSequence, not for your use.
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*/
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struct AsnDecodeSequenceItem
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{
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BYTE tag;
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DWORD offset;
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CryptDecodeObjectExFunc decodeFunc;
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DWORD minSize;
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BOOL optional;
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BOOL hasPointer;
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DWORD pointerOffset;
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DWORD size;
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};
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/* Decodes the items in a sequence, where the items are described in items,
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* the encoded data are in pbEncoded with length cbEncoded. Decodes into
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* pvStructInfo. nextData is a pointer to the memory location at which the
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* first decoded item with a dynamic pointer should point.
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* Upon decoding, *cbDecoded is the total number of bytes decoded.
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*/
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static BOOL CRYPT_AsnDecodeSequenceItems(DWORD dwCertEncodingType,
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struct AsnDecodeSequenceItem items[], DWORD cItem, const BYTE *pbEncoded,
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DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo, BYTE *nextData,
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DWORD *cbDecoded)
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{
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BOOL ret;
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DWORD i, decoded = 0;
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const BYTE *ptr = pbEncoded;
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TRACE("%p, %d, %p, %d, %08x, %p, %p, %p\n", items, cItem, pbEncoded,
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cbEncoded, dwFlags, pvStructInfo, nextData, cbDecoded);
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for (i = 0, ret = TRUE; ret && i < cItem; i++)
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{
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if (cbEncoded - (ptr - pbEncoded) != 0)
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{
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DWORD nextItemLen;
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if ((ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
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&nextItemLen)))
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{
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BYTE nextItemLenBytes = GET_LEN_BYTES(ptr[1]);
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if (ptr[0] == items[i].tag || !items[i].tag)
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{
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if (nextData && pvStructInfo && items[i].hasPointer)
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{
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TRACE("Setting next pointer to %p\n",
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nextData);
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*(BYTE **)((BYTE *)pvStructInfo +
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items[i].pointerOffset) = nextData;
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}
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if (items[i].decodeFunc)
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{
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if (pvStructInfo)
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TRACE("decoding item %d\n", i);
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else
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TRACE("sizing item %d\n", i);
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ret = items[i].decodeFunc(dwCertEncodingType,
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NULL, ptr, 1 + nextItemLenBytes + nextItemLen,
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dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL,
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pvStructInfo ? (BYTE *)pvStructInfo + items[i].offset
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: NULL, &items[i].size);
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if (ret)
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{
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/* Account for alignment padding */
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if (items[i].size % sizeof(DWORD))
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items[i].size += sizeof(DWORD) -
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items[i].size % sizeof(DWORD);
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TRACE("item %d size: %d\n", i, items[i].size);
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if (nextData && items[i].hasPointer &&
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items[i].size > items[i].minSize)
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nextData += items[i].size - items[i].minSize;
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ptr += 1 + nextItemLenBytes + nextItemLen;
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decoded += 1 + nextItemLenBytes + nextItemLen;
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TRACE("item %d: decoded %d bytes\n", i,
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1 + nextItemLenBytes + nextItemLen);
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}
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else if (items[i].optional &&
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GetLastError() == CRYPT_E_ASN1_BADTAG)
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{
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TRACE("skipping optional item %d\n", i);
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items[i].size = items[i].minSize;
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SetLastError(NOERROR);
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ret = TRUE;
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}
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else
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TRACE("item %d failed: %08x\n", i,
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GetLastError());
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}
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else
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{
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TRACE("item %d: decoded %d bytes\n", i,
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1 + nextItemLenBytes + nextItemLen);
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ptr += 1 + nextItemLenBytes + nextItemLen;
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decoded += 1 + nextItemLenBytes + nextItemLen;
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items[i].size = items[i].minSize;
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}
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}
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else if (items[i].optional)
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{
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TRACE("skipping optional item %d\n", i);
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items[i].size = items[i].minSize;
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}
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else
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{
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TRACE("item %d: tag %02x doesn't match expected %02x\n",
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i, ptr[0], items[i].tag);
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SetLastError(CRYPT_E_ASN1_BADTAG);
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ret = FALSE;
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}
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}
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}
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else if (items[i].optional)
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{
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TRACE("missing optional item %d, skipping\n", i);
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items[i].size = items[i].minSize;
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}
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else
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{
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TRACE("not enough bytes for item %d, failing\n", i);
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SetLastError(CRYPT_E_ASN1_CORRUPT);
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ret = FALSE;
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}
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}
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if (ret)
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*cbDecoded = decoded;
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TRACE("returning %d\n", ret);
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return ret;
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}
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/* This decodes an arbitrary sequence into a contiguous block of memory
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* (basically, a struct.) Each element being decoded is described by a struct
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* AsnDecodeSequenceItem, see above.
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* startingPointer is an optional pointer to the first place where dynamic
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* data will be stored. If you know the starting offset, you may pass it
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* here. Otherwise, pass NULL, and one will be inferred from the items.
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* Each item decoder is never called with CRYPT_DECODE_ALLOC_FLAG set.
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*/
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static BOOL CRYPT_AsnDecodeSequence(DWORD dwCertEncodingType,
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struct AsnDecodeSequenceItem items[], DWORD cItem, const BYTE *pbEncoded,
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DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
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void *pvStructInfo, DWORD *pcbStructInfo, void *startingPointer)
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{
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BOOL ret;
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TRACE("%p, %d, %p, %d, %08x, %p, %p, %d, %p\n", items, cItem, pbEncoded,
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cbEncoded, dwFlags, pDecodePara, pvStructInfo, *pcbStructInfo,
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startingPointer);
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if (pbEncoded[0] == ASN_SEQUENCE)
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{
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DWORD dataLen;
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if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
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{
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DWORD lenBytes = GET_LEN_BYTES(pbEncoded[1]), cbDecoded;
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const BYTE *ptr = pbEncoded + 1 + lenBytes;
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cbEncoded -= 1 + lenBytes;
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if (cbEncoded < dataLen)
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{
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TRACE("dataLen %d exceeds cbEncoded %d, failing\n", dataLen,
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cbEncoded);
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SetLastError(CRYPT_E_ASN1_CORRUPT);
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ret = FALSE;
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}
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else
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ret = CRYPT_AsnDecodeSequenceItems(dwFlags, items, cItem, ptr,
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cbEncoded, dwFlags, NULL, NULL, &cbDecoded);
|
|
if (ret && cbDecoded != dataLen)
|
|
{
|
|
TRACE("expected %d decoded, got %d, failing\n", dataLen,
|
|
cbDecoded);
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
DWORD i, bytesNeeded = 0, structSize = 0;
|
|
|
|
for (i = 0; i < cItem; i++)
|
|
{
|
|
bytesNeeded += items[i].size;
|
|
structSize += items[i].minSize;
|
|
}
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
BYTE *nextData;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
if (startingPointer)
|
|
nextData = (BYTE *)startingPointer;
|
|
else
|
|
nextData = (BYTE *)pvStructInfo + structSize;
|
|
memset(pvStructInfo, 0, structSize);
|
|
ret = CRYPT_AsnDecodeSequenceItems(dwFlags, items, cItem,
|
|
ptr, cbEncoded, dwFlags, pvStructInfo, nextData,
|
|
&cbDecoded);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
/* tag:
|
|
* The expected tag of the entire encoded array (usually a variant
|
|
* of ASN_SETOF or ASN_SEQUENCEOF.) If tag is 0, decodeFunc is called
|
|
* regardless of the tag seen.
|
|
* decodeFunc:
|
|
* used to decode each item in the array
|
|
* itemSize:
|
|
* is the minimum size of each decoded item
|
|
* hasPointer:
|
|
* indicates whether each item has a dynamic pointer
|
|
* pointerOffset:
|
|
* indicates the offset within itemSize at which the pointer exists
|
|
*/
|
|
struct AsnArrayDescriptor
|
|
{
|
|
BYTE tag;
|
|
CryptDecodeObjectExFunc decodeFunc;
|
|
DWORD itemSize;
|
|
BOOL hasPointer;
|
|
DWORD pointerOffset;
|
|
};
|
|
|
|
struct AsnArrayItemSize
|
|
{
|
|
DWORD encodedLen;
|
|
DWORD size;
|
|
};
|
|
|
|
/* Decodes an array of like types into a struct GenericArray.
|
|
* The layout and decoding of the array are described by a struct
|
|
* AsnArrayDescriptor.
|
|
*/
|
|
static BOOL CRYPT_AsnDecodeArray(const struct AsnArrayDescriptor *arrayDesc,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo,
|
|
void *startingPointer)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %p, %d, %08x, %p, %p, %d, %p\n", arrayDesc, pbEncoded,
|
|
cbEncoded, dwFlags, pDecodePara, pvStructInfo, *pcbStructInfo,
|
|
startingPointer);
|
|
|
|
if (!arrayDesc->tag || pbEncoded[0] == arrayDesc->tag)
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD bytesNeeded, cItems = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
/* There can be arbitrarily many items, but there is often only one.
|
|
*/
|
|
struct AsnArrayItemSize itemSize = { 0 }, *itemSizes = &itemSize;
|
|
|
|
bytesNeeded = sizeof(struct GenericArray);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
DWORD itemLenBytes, itemDataLen, size = 0;
|
|
|
|
itemLenBytes = GET_LEN_BYTES(ptr[1]);
|
|
/* Each item decoded may not tolerate extraneous bytes, so
|
|
* get the length of the next element and pass it directly.
|
|
*/
|
|
ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&itemDataLen);
|
|
if (ret)
|
|
ret = arrayDesc->decodeFunc(X509_ASN_ENCODING, 0, ptr,
|
|
1 + itemLenBytes + itemDataLen,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL,
|
|
&size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cItems++;
|
|
if (itemSizes != &itemSize)
|
|
itemSizes = CryptMemRealloc(itemSizes,
|
|
cItems * sizeof(struct AsnArrayItemSize));
|
|
else
|
|
{
|
|
itemSizes =
|
|
CryptMemAlloc(
|
|
cItems * sizeof(struct AsnArrayItemSize));
|
|
if (itemSizes)
|
|
memcpy(itemSizes, &itemSize, sizeof(itemSize));
|
|
}
|
|
if (itemSizes)
|
|
{
|
|
itemSizes[cItems - 1].encodedLen = 1 + itemLenBytes
|
|
+ itemDataLen;
|
|
itemSizes[cItems - 1].size = size;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
else
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
DWORD i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
struct GenericArray *array;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
array = (struct GenericArray *)pvStructInfo;
|
|
array->cItems = cItems;
|
|
if (startingPointer)
|
|
array->rgItems = startingPointer;
|
|
else
|
|
array->rgItems = (BYTE *)array +
|
|
sizeof(struct GenericArray);
|
|
nextData = (BYTE *)array->rgItems +
|
|
array->cItems * arrayDesc->itemSize;
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cItems && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
if (arrayDesc->hasPointer)
|
|
*(BYTE **)(array->rgItems + i * arrayDesc->itemSize
|
|
+ arrayDesc->pointerOffset) = nextData;
|
|
ret = arrayDesc->decodeFunc(X509_ASN_ENCODING, 0, ptr,
|
|
itemSizes[i].encodedLen,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL,
|
|
array->rgItems + i * arrayDesc->itemSize,
|
|
&itemSizes[i].size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
nextData += itemSizes[i].size - arrayDesc->itemSize;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (itemSizes != &itemSize)
|
|
CryptMemFree(itemSizes);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Decodes a DER-encoded BLOB into a CRYPT_DER_BLOB struct pointed to by
|
|
* pvStructInfo. The BLOB must be non-empty, otherwise the last error is set
|
|
* to CRYPT_E_ASN1_CORRUPT.
|
|
* Warning: assumes the CRYPT_DER_BLOB pointed to by pvStructInfo has pbData
|
|
* set!
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeDerBlob(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD bytesNeeded = sizeof(CRYPT_DER_BLOB);
|
|
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += 1 + lenBytes + dataLen;
|
|
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CRYPT_DER_BLOB *blob;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_DER_BLOB *)pvStructInfo;
|
|
blob->cbData = 1 + lenBytes + dataLen;
|
|
if (blob->cbData)
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
blob->pbData = (BYTE *)pbEncoded;
|
|
else
|
|
{
|
|
assert(blob->pbData);
|
|
memcpy(blob->pbData, pbEncoded, blob->cbData);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Like CRYPT_AsnDecodeBitsInternal, but swaps the bytes */
|
|
static BOOL WINAPI CRYPT_AsnDecodeBitsSwapBytes(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("(%p, %d, 0x%08x, %p, %p, %d)\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
/* Can't use the CRYPT_DECODE_NOCOPY_FLAG, because we modify the bytes in-
|
|
* place.
|
|
*/
|
|
ret = CRYPT_AsnDecodeBitsInternal(dwCertEncodingType, lpszStructType,
|
|
pbEncoded, cbEncoded, dwFlags & ~CRYPT_DECODE_NOCOPY_FLAG, pDecodePara,
|
|
pvStructInfo, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
CRYPT_BIT_BLOB *blob = (CRYPT_BIT_BLOB *)pvStructInfo;
|
|
|
|
if (blob->cbData)
|
|
{
|
|
DWORD i;
|
|
BYTE temp;
|
|
|
|
for (i = 0; i < blob->cbData / 2; i++)
|
|
{
|
|
temp = blob->pbData[i];
|
|
blob->pbData[i] = blob->pbData[blob->cbData - i - 1];
|
|
blob->pbData[blob->cbData - i - 1] = temp;
|
|
}
|
|
}
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCertSignedContent(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ 0, offsetof(CERT_SIGNED_CONTENT_INFO, ToBeSigned),
|
|
CRYPT_AsnDecodeDerBlob, sizeof(CRYPT_DER_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_SIGNED_CONTENT_INFO, ToBeSigned.pbData), 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_SIGNED_CONTENT_INFO,
|
|
SignatureAlgorithm), CRYPT_AsnDecodeAlgorithmId,
|
|
sizeof(CRYPT_ALGORITHM_IDENTIFIER), FALSE, TRUE,
|
|
offsetof(CERT_SIGNED_CONTENT_INFO, SignatureAlgorithm.pszObjId), 0 },
|
|
{ ASN_BITSTRING, offsetof(CERT_SIGNED_CONTENT_INFO, Signature),
|
|
CRYPT_AsnDecodeBitsSwapBytes, sizeof(CRYPT_BIT_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_SIGNED_CONTENT_INFO, Signature.pbData), 0 },
|
|
};
|
|
|
|
if (dwFlags & CRYPT_DECODE_NO_SIGNATURE_BYTE_REVERSAL_FLAG)
|
|
items[2].decodeFunc = CRYPT_AsnDecodeBitsInternal;
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
/* Internal function */
|
|
static BOOL WINAPI CRYPT_AsnDecodeCertVersion(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
ret = CRYPT_AsnDecodeInt(dwCertEncodingType, X509_INTEGER,
|
|
pbEncoded + 1 + lenBytes, dataLen, dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeValidity(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ 0, offsetof(CERT_PRIVATE_KEY_VALIDITY, NotBefore),
|
|
CRYPT_AsnDecodeChoiceOfTime, sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
{ 0, offsetof(CERT_PRIVATE_KEY_VALIDITY, NotAfter),
|
|
CRYPT_AsnDecodeChoiceOfTime, sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
return ret;
|
|
}
|
|
|
|
/* Internal function */
|
|
static BOOL WINAPI CRYPT_AsnDecodeCertExtensions(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
ret = CRYPT_AsnDecodeExtensionsInternal(dwCertEncodingType,
|
|
X509_EXTENSIONS, pbEncoded + 1 + lenBytes, dataLen, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCertInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR, offsetof(CERT_INFO, dwVersion),
|
|
CRYPT_AsnDecodeCertVersion, sizeof(DWORD), TRUE, FALSE, 0, 0 },
|
|
{ ASN_INTEGER, offsetof(CERT_INFO, SerialNumber),
|
|
CRYPT_AsnDecodeIntegerInternal, sizeof(CRYPT_INTEGER_BLOB), FALSE,
|
|
TRUE, offsetof(CERT_INFO, SerialNumber.pbData), 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_INFO, SignatureAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CERT_INFO, SignatureAlgorithm.pszObjId), 0 },
|
|
{ 0, offsetof(CERT_INFO, Issuer), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CERT_INFO,
|
|
Issuer.pbData) },
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_INFO, NotBefore),
|
|
CRYPT_AsnDecodeValidity, sizeof(CERT_PRIVATE_KEY_VALIDITY), FALSE,
|
|
FALSE, 0 },
|
|
{ 0, offsetof(CERT_INFO, Subject), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CERT_INFO,
|
|
Subject.pbData) },
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_INFO, SubjectPublicKeyInfo),
|
|
CRYPT_AsnDecodePubKeyInfoInternal, sizeof(CERT_PUBLIC_KEY_INFO),
|
|
FALSE, TRUE, offsetof(CERT_INFO,
|
|
SubjectPublicKeyInfo.Algorithm.Parameters.pbData), 0 },
|
|
{ ASN_BITSTRING, offsetof(CERT_INFO, IssuerUniqueId),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), TRUE, TRUE,
|
|
offsetof(CERT_INFO, IssuerUniqueId.pbData), 0 },
|
|
{ ASN_BITSTRING, offsetof(CERT_INFO, SubjectUniqueId),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), TRUE, TRUE,
|
|
offsetof(CERT_INFO, SubjectUniqueId.pbData), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 3, offsetof(CERT_INFO, cExtension),
|
|
CRYPT_AsnDecodeCertExtensions, sizeof(CERT_EXTENSIONS), TRUE, TRUE,
|
|
offsetof(CERT_INFO, rgExtension), 0 },
|
|
};
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
CERT_INFO *info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
info = *(CERT_INFO **)pvStructInfo;
|
|
else
|
|
info = (CERT_INFO *)pvStructInfo;
|
|
if (!info->SerialNumber.cbData || !info->Issuer.cbData ||
|
|
!info->Subject.cbData)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
/* Don't need to deallocate, because it should have failed on the
|
|
* first pass (and no memory was allocated.)
|
|
*/
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCert(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
PCERT_SIGNED_CONTENT_INFO signedCert = NULL;
|
|
DWORD size = 0;
|
|
|
|
/* First try to decode it as a signed cert. */
|
|
ret = CRYPT_AsnDecodeCertSignedContent(dwCertEncodingType, X509_CERT,
|
|
pbEncoded, cbEncoded, CRYPT_DECODE_ALLOC_FLAG, NULL,
|
|
(BYTE *)&signedCert, &size);
|
|
if (ret)
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeCertInfo(dwCertEncodingType,
|
|
X509_CERT_TO_BE_SIGNED, signedCert->ToBeSigned.pbData,
|
|
signedCert->ToBeSigned.cbData, dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo);
|
|
LocalFree(signedCert);
|
|
}
|
|
/* Failing that, try it as an unsigned cert */
|
|
if (!ret)
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeCertInfo(dwCertEncodingType,
|
|
X509_CERT_TO_BE_SIGNED, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo);
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCRLEntry(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(CRL_ENTRY, SerialNumber),
|
|
CRYPT_AsnDecodeIntegerInternal, sizeof(CRYPT_INTEGER_BLOB), FALSE, TRUE,
|
|
offsetof(CRL_ENTRY, SerialNumber.pbData), 0 },
|
|
{ 0, offsetof(CRL_ENTRY, RevocationDate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CRL_ENTRY, cExtension),
|
|
CRYPT_AsnDecodeExtensionsInternal, sizeof(CERT_EXTENSIONS), TRUE, TRUE,
|
|
offsetof(CRL_ENTRY, rgExtension), 0 },
|
|
};
|
|
PCRL_ENTRY entry = (PCRL_ENTRY)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %d\n", pbEncoded, cbEncoded, dwFlags, entry,
|
|
*pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
NULL, entry, pcbStructInfo, entry ? entry->SerialNumber.pbData : NULL);
|
|
return ret;
|
|
}
|
|
|
|
/* Warning: assumes pvStructInfo is a struct GenericArray whose rgItems has
|
|
* been set prior to calling.
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeCRLEntries(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeCRLEntry, sizeof(CRL_ENTRY), TRUE,
|
|
offsetof(CRL_ENTRY, SerialNumber.pbData) };
|
|
struct GenericArray *entries = (struct GenericArray *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo,
|
|
entries ? entries->rgItems : NULL);
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCRLInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(CRL_INFO, dwVersion),
|
|
CRYPT_AsnDecodeInt, sizeof(DWORD), TRUE, FALSE, 0, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CRL_INFO, SignatureAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CRL_INFO, SignatureAlgorithm.pszObjId), 0 },
|
|
{ 0, offsetof(CRL_INFO, Issuer), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CRL_INFO,
|
|
Issuer.pbData) },
|
|
{ 0, offsetof(CRL_INFO, ThisUpdate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
{ 0, offsetof(CRL_INFO, NextUpdate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), TRUE, FALSE, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CRL_INFO, cCRLEntry),
|
|
CRYPT_AsnDecodeCRLEntries, sizeof(struct GenericArray), TRUE, TRUE,
|
|
offsetof(CRL_INFO, rgCRLEntry), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 0, offsetof(CRL_INFO, cExtension),
|
|
CRYPT_AsnDecodeCertExtensions, sizeof(CERT_EXTENSIONS), TRUE, TRUE,
|
|
offsetof(CRL_INFO, rgExtension), 0 },
|
|
};
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCRL(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
PCERT_SIGNED_CONTENT_INFO signedCrl = NULL;
|
|
DWORD size = 0;
|
|
|
|
/* First try to decode it as a signed crl. */
|
|
ret = CRYPT_AsnDecodeCertSignedContent(dwCertEncodingType, X509_CERT,
|
|
pbEncoded, cbEncoded, CRYPT_DECODE_ALLOC_FLAG, NULL,
|
|
(BYTE *)&signedCrl, &size);
|
|
if (ret)
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeCRLInfo(dwCertEncodingType,
|
|
X509_CERT_CRL_TO_BE_SIGNED, signedCrl->ToBeSigned.pbData,
|
|
signedCrl->ToBeSigned.cbData, dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo);
|
|
LocalFree(signedCrl);
|
|
}
|
|
/* Failing that, try it as an unsigned crl */
|
|
if (!ret)
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeCRLInfo(dwCertEncodingType,
|
|
X509_CERT_CRL_TO_BE_SIGNED, pbEncoded, cbEncoded,
|
|
dwFlags, pDecodePara, pvStructInfo, pcbStructInfo);
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeOidIgnoreTag(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD dataLen;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD bytesNeeded = sizeof(LPSTR);
|
|
|
|
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 (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
LPSTR pszObjId = *(LPSTR *)pvStructInfo;
|
|
|
|
*pszObjId = 0;
|
|
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
|
|
*(LPSTR *)pvStructInfo = NULL;
|
|
*pcbStructInfo = bytesNeeded;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeOidInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (pbEncoded[0] == ASN_OBJECTIDENTIFIER)
|
|
ret = CRYPT_AsnDecodeOidIgnoreTag(dwCertEncodingType, lpszStructType,
|
|
pbEncoded, cbEncoded, dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo);
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Warning: assumes pvStructInfo is a CERT_EXTENSION whose pszObjId is set
|
|
* ahead of time!
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeExtension(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CERT_EXTENSION, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CERT_EXTENSION, pszObjId), 0 },
|
|
{ ASN_BOOL, offsetof(CERT_EXTENSION, fCritical), CRYPT_AsnDecodeBool,
|
|
sizeof(BOOL), TRUE, FALSE, 0, 0 },
|
|
{ ASN_OCTETSTRING, offsetof(CERT_EXTENSION, Value),
|
|
CRYPT_AsnDecodeOctetsInternal, sizeof(CRYPT_OBJID_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_EXTENSION, Value.pbData) },
|
|
};
|
|
BOOL ret = TRUE;
|
|
PCERT_EXTENSION ext = (PCERT_EXTENSION)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %d\n", pbEncoded, cbEncoded, dwFlags, ext,
|
|
*pcbStructInfo);
|
|
|
|
if (ext)
|
|
TRACE("ext->pszObjId is %p\n", ext->pszObjId);
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags, NULL,
|
|
ext, pcbStructInfo, ext ? ext->pszObjId : NULL);
|
|
if (ext)
|
|
TRACE("ext->pszObjId is %p (%s)\n", ext->pszObjId,
|
|
debugstr_a(ext->pszObjId));
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeExtensionsInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeExtension, sizeof(CERT_EXTENSION), TRUE,
|
|
offsetof(CERT_EXTENSION, pszObjId) };
|
|
PCERT_EXTENSIONS exts = (PCERT_EXTENSIONS)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, exts ? exts->rgExtension : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeExtensions(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
ret = CRYPT_AsnDecodeExtensionsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, *pcbStructInfo);
|
|
if (ret)
|
|
{
|
|
CERT_EXTENSIONS *exts;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
exts = (CERT_EXTENSIONS *)pvStructInfo;
|
|
exts->rgExtension = (CERT_EXTENSION *)((BYTE *)exts +
|
|
sizeof(CERT_EXTENSIONS));
|
|
ret = CRYPT_AsnDecodeExtensionsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
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_AsnDecodeNameValueInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD dataLen;
|
|
CERT_NAME_VALUE *value = (CERT_NAME_VALUE *)pvStructInfo;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD bytesNeeded = sizeof(CERT_NAME_VALUE), valueType;
|
|
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_OCTETSTRING:
|
|
valueType = CERT_RDN_OCTET_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_NUMERICSTRING:
|
|
valueType = CERT_RDN_NUMERIC_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_PRINTABLESTRING:
|
|
valueType = CERT_RDN_PRINTABLE_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_IA5STRING:
|
|
valueType = CERT_RDN_IA5_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_T61STRING:
|
|
valueType = CERT_RDN_T61_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_VIDEOTEXSTRING:
|
|
valueType = CERT_RDN_VIDEOTEX_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_GRAPHICSTRING:
|
|
valueType = CERT_RDN_GRAPHIC_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_VISIBLESTRING:
|
|
valueType = CERT_RDN_VISIBLE_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_GENERALSTRING:
|
|
valueType = CERT_RDN_GENERAL_STRING;
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_UNIVERSALSTRING:
|
|
FIXME("ASN_UNIVERSALSTRING: unimplemented\n");
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
case ASN_BMPSTRING:
|
|
valueType = CERT_RDN_BMP_STRING;
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_UTF8STRING:
|
|
valueType = CERT_RDN_UTF8_STRING;
|
|
bytesNeeded += MultiByteToWideChar(CP_UTF8, 0,
|
|
(LPCSTR)pbEncoded + 1 + lenBytes, dataLen, NULL, 0) * 2;
|
|
break;
|
|
default:
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!value)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
value->dwValueType = valueType;
|
|
if (dataLen)
|
|
{
|
|
DWORD i;
|
|
|
|
assert(value->Value.pbData);
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_OCTETSTRING:
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
case ASN_T61STRING:
|
|
case ASN_VIDEOTEXSTRING:
|
|
case ASN_GRAPHICSTRING:
|
|
case ASN_VISIBLESTRING:
|
|
case ASN_GENERALSTRING:
|
|
value->Value.cbData = dataLen;
|
|
if (dataLen)
|
|
{
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
memcpy(value->Value.pbData,
|
|
pbEncoded + 1 + lenBytes, dataLen);
|
|
else
|
|
value->Value.pbData = (LPBYTE)pbEncoded + 1 +
|
|
lenBytes;
|
|
}
|
|
break;
|
|
case ASN_BMPSTRING:
|
|
{
|
|
LPWSTR str = (LPWSTR)value->Value.pbData;
|
|
|
|
value->Value.cbData = dataLen;
|
|
for (i = 0; i < dataLen / 2; i++)
|
|
str[i] = (pbEncoded[1 + lenBytes + 2 * i] << 8) |
|
|
pbEncoded[1 + lenBytes + 2 * i + 1];
|
|
break;
|
|
}
|
|
case ASN_UTF8STRING:
|
|
{
|
|
LPWSTR str = (LPWSTR)value->Value.pbData;
|
|
|
|
value->Value.cbData = MultiByteToWideChar(CP_UTF8, 0,
|
|
(LPCSTR)pbEncoded + 1 + lenBytes, dataLen,
|
|
str, bytesNeeded - sizeof(CERT_NAME_VALUE)) * 2;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
value->Value.cbData = 0;
|
|
value->Value.pbData = NULL;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeNameValue(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
ret = CRYPT_AsnDecodeNameValueInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, *pcbStructInfo);
|
|
if (ret)
|
|
{
|
|
CERT_NAME_VALUE *value;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
value = (CERT_NAME_VALUE *)pvStructInfo;
|
|
value->Value.pbData = ((BYTE *)value + sizeof(CERT_NAME_VALUE));
|
|
ret = CRYPT_AsnDecodeNameValueInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnicodeNameValueInternal(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD dataLen;
|
|
CERT_NAME_VALUE *value = (CERT_NAME_VALUE *)pvStructInfo;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD bytesNeeded = sizeof(CERT_NAME_VALUE), valueType;
|
|
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
valueType = CERT_RDN_NUMERIC_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_PRINTABLESTRING:
|
|
valueType = CERT_RDN_PRINTABLE_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_IA5STRING:
|
|
valueType = CERT_RDN_IA5_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_T61STRING:
|
|
valueType = CERT_RDN_T61_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_VIDEOTEXSTRING:
|
|
valueType = CERT_RDN_VIDEOTEX_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_GRAPHICSTRING:
|
|
valueType = CERT_RDN_GRAPHIC_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_VISIBLESTRING:
|
|
valueType = CERT_RDN_VISIBLE_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_GENERALSTRING:
|
|
valueType = CERT_RDN_GENERAL_STRING;
|
|
bytesNeeded += dataLen * 2;
|
|
break;
|
|
case ASN_UNIVERSALSTRING:
|
|
valueType = CERT_RDN_UNIVERSAL_STRING;
|
|
bytesNeeded += dataLen / 2;
|
|
break;
|
|
case ASN_BMPSTRING:
|
|
valueType = CERT_RDN_BMP_STRING;
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case ASN_UTF8STRING:
|
|
valueType = CERT_RDN_UTF8_STRING;
|
|
bytesNeeded += MultiByteToWideChar(CP_UTF8, 0,
|
|
(LPCSTR)pbEncoded + 1 + lenBytes, dataLen, NULL, 0) * 2;
|
|
break;
|
|
default:
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!value)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
value->dwValueType = valueType;
|
|
if (dataLen)
|
|
{
|
|
DWORD i;
|
|
LPWSTR str = (LPWSTR)value->Value.pbData;
|
|
|
|
assert(value->Value.pbData);
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
case ASN_T61STRING:
|
|
case ASN_VIDEOTEXSTRING:
|
|
case ASN_GRAPHICSTRING:
|
|
case ASN_VISIBLESTRING:
|
|
case ASN_GENERALSTRING:
|
|
value->Value.cbData = dataLen * 2;
|
|
for (i = 0; i < dataLen; i++)
|
|
str[i] = pbEncoded[1 + lenBytes + i];
|
|
break;
|
|
case ASN_UNIVERSALSTRING:
|
|
value->Value.cbData = dataLen / 2;
|
|
for (i = 0; i < dataLen / 4; i++)
|
|
str[i] = (pbEncoded[1 + lenBytes + 2 * i + 2] << 8)
|
|
| pbEncoded[1 + lenBytes + 2 * i + 3];
|
|
break;
|
|
case ASN_BMPSTRING:
|
|
value->Value.cbData = dataLen;
|
|
for (i = 0; i < dataLen / 2; i++)
|
|
str[i] = (pbEncoded[1 + lenBytes + 2 * i] << 8) |
|
|
pbEncoded[1 + lenBytes + 2 * i + 1];
|
|
break;
|
|
case ASN_UTF8STRING:
|
|
value->Value.cbData = MultiByteToWideChar(CP_UTF8, 0,
|
|
(LPCSTR)pbEncoded + 1 + lenBytes, dataLen,
|
|
str, bytesNeeded - sizeof(CERT_NAME_VALUE)) * 2;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
value->Value.cbData = 0;
|
|
value->Value.pbData = NULL;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnicodeNameValue(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
ret = CRYPT_AsnDecodeUnicodeNameValueInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, *pcbStructInfo);
|
|
if (ret)
|
|
{
|
|
CERT_NAME_VALUE *value;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
value = (CERT_NAME_VALUE *)pvStructInfo;
|
|
value->Value.pbData = ((BYTE *)value + sizeof(CERT_NAME_VALUE));
|
|
ret = CRYPT_AsnDecodeUnicodeNameValueInternal(
|
|
dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdnAttr(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CERT_RDN_ATTR, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CERT_RDN_ATTR, pszObjId), 0 },
|
|
{ 0, offsetof(CERT_RDN_ATTR, dwValueType),
|
|
CRYPT_AsnDecodeNameValueInternal, sizeof(CERT_NAME_VALUE),
|
|
FALSE, TRUE, offsetof(CERT_RDN_ATTR, Value.pbData), 0 },
|
|
};
|
|
CERT_RDN_ATTR *attr = (CERT_RDN_ATTR *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pvStructInfo, *pcbStructInfo);
|
|
|
|
if (attr)
|
|
TRACE("attr->pszObjId is %p\n", attr->pszObjId);
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags, NULL,
|
|
attr, pcbStructInfo, attr ? attr->pszObjId : NULL);
|
|
if (attr)
|
|
{
|
|
TRACE("attr->pszObjId is %p (%s)\n", attr->pszObjId,
|
|
debugstr_a(attr->pszObjId));
|
|
TRACE("attr->dwValueType is %d\n", attr->dwValueType);
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdn(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_CONSTRUCTOR | ASN_SETOF,
|
|
CRYPT_AsnDecodeRdnAttr, sizeof(CERT_RDN_ATTR), TRUE,
|
|
offsetof(CERT_RDN_ATTR, pszObjId) };
|
|
PCERT_RDN rdn = (PCERT_RDN)pvStructInfo;
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, rdn ? rdn->rgRDNAttr : NULL);
|
|
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;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeRdn, sizeof(CERT_RDN), TRUE,
|
|
offsetof(CERT_RDN, rgRDNAttr) };
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnicodeRdnAttr(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CERT_RDN_ATTR, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CERT_RDN_ATTR, pszObjId), 0 },
|
|
{ 0, offsetof(CERT_RDN_ATTR, dwValueType),
|
|
CRYPT_AsnDecodeUnicodeNameValueInternal, sizeof(CERT_NAME_VALUE),
|
|
FALSE, TRUE, offsetof(CERT_RDN_ATTR, Value.pbData), 0 },
|
|
};
|
|
CERT_RDN_ATTR *attr = (CERT_RDN_ATTR *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pvStructInfo, *pcbStructInfo);
|
|
|
|
if (attr)
|
|
TRACE("attr->pszObjId is %p\n", attr->pszObjId);
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags, NULL,
|
|
attr, pcbStructInfo, attr ? attr->pszObjId : NULL);
|
|
if (attr)
|
|
{
|
|
TRACE("attr->pszObjId is %p (%s)\n", attr->pszObjId,
|
|
debugstr_a(attr->pszObjId));
|
|
TRACE("attr->dwValueType is %d\n", attr->dwValueType);
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnicodeRdn(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_CONSTRUCTOR | ASN_SETOF,
|
|
CRYPT_AsnDecodeUnicodeRdnAttr, sizeof(CERT_RDN_ATTR), TRUE,
|
|
offsetof(CERT_RDN_ATTR, pszObjId) };
|
|
PCERT_RDN rdn = (PCERT_RDN)pvStructInfo;
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, rdn ? rdn->rgRDNAttr : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnicodeName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeUnicodeRdn, sizeof(CERT_RDN), TRUE,
|
|
offsetof(CERT_RDN, rgRDNAttr) };
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCopyBytes(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
DWORD bytesNeeded = sizeof(CRYPT_OBJID_BLOB);
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += cbEncoded;
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
*pcbStructInfo = bytesNeeded;
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
PCRYPT_OBJID_BLOB blob = (PCRYPT_OBJID_BLOB)pvStructInfo;
|
|
|
|
*pcbStructInfo = bytesNeeded;
|
|
blob->cbData = cbEncoded;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
blob->pbData = (LPBYTE)pbEncoded;
|
|
else
|
|
{
|
|
assert(blob->pbData);
|
|
memcpy(blob->pbData, pbEncoded, blob->cbData);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_DecodeDERArray(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnArrayDescriptor arrayDesc = { 0, CRYPT_AsnDecodeCopyBytes,
|
|
sizeof(CRYPT_DER_BLOB), TRUE, offsetof(CRYPT_DER_BLOB, pbData) };
|
|
struct GenericArray *array = (struct GenericArray *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, array ? array->rgItems : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSAttribute(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CRYPT_ATTRIBUTE, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CRYPT_ATTRIBUTE, pszObjId), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_SETOF, offsetof(CRYPT_ATTRIBUTE, cValue),
|
|
CRYPT_DecodeDERArray, sizeof(struct GenericArray), FALSE, TRUE,
|
|
offsetof(CRYPT_ATTRIBUTE, rgValue), 0 },
|
|
};
|
|
PCRYPT_ATTRIBUTE attr = (PCRYPT_ATTRIBUTE)pvStructInfo;
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, attr ? attr->pszObjId :
|
|
NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
}
|
|
__ENDTRY
|
|
TRACE("returning %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSAttributesInternal(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { 0, CRYPT_AsnDecodePKCSAttribute,
|
|
sizeof(CRYPT_ATTRIBUTE), TRUE, offsetof(CRYPT_ATTRIBUTE, pszObjId) };
|
|
PCRYPT_ATTRIBUTES attrs = (PCRYPT_ATTRIBUTES)pvStructInfo;
|
|
BOOL ret;
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, attrs ? attrs->rgAttr :
|
|
NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSAttributes(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if (!cbEncoded)
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
else if (pbEncoded[0] != (ASN_CONSTRUCTOR | ASN_SETOF))
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
else if ((ret = CRYPT_AsnDecodePKCSAttributesInternal(
|
|
dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded)))
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
PCRYPT_ATTRIBUTES attrs;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
attrs = (PCRYPT_ATTRIBUTES)pvStructInfo;
|
|
attrs->rgAttr = (PCRYPT_ATTRIBUTE)((BYTE *)pvStructInfo +
|
|
sizeof(CRYPT_ATTRIBUTES));
|
|
ret = CRYPT_AsnDecodePKCSAttributesInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
}
|
|
__ENDTRY
|
|
TRACE("returning %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAlgorithmId(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
CRYPT_ALGORITHM_IDENTIFIER *algo =
|
|
(CRYPT_ALGORITHM_IDENTIFIER *)pvStructInfo;
|
|
BOOL ret = TRUE;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CRYPT_ALGORITHM_IDENTIFIER, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CRYPT_ALGORITHM_IDENTIFIER, pszObjId), 0 },
|
|
{ 0, offsetof(CRYPT_ALGORITHM_IDENTIFIER, Parameters),
|
|
CRYPT_AsnDecodeCopyBytes, sizeof(CRYPT_OBJID_BLOB), TRUE, TRUE,
|
|
offsetof(CRYPT_ALGORITHM_IDENTIFIER, Parameters.pbData), 0 },
|
|
};
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, algo ? algo->pszObjId : NULL);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
TRACE("pszObjId is %p (%s)\n", algo->pszObjId,
|
|
debugstr_a(algo->pszObjId));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePubKeyInfoInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_PUBLIC_KEY_INFO, Algorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CERT_PUBLIC_KEY_INFO,
|
|
Algorithm.pszObjId) },
|
|
{ ASN_BITSTRING, offsetof(CERT_PUBLIC_KEY_INFO, PublicKey),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_PUBLIC_KEY_INFO, PublicKey.pbData) },
|
|
};
|
|
PCERT_PUBLIC_KEY_INFO info = (PCERT_PUBLIC_KEY_INFO)pvStructInfo;
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, info ?
|
|
info->Algorithm.Parameters.pbData : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePubKeyInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if ((ret = CRYPT_AsnDecodePubKeyInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded)))
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
PCERT_PUBLIC_KEY_INFO info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (PCERT_PUBLIC_KEY_INFO)pvStructInfo;
|
|
info->Algorithm.Parameters.pbData = (BYTE *)pvStructInfo +
|
|
sizeof(CERT_PUBLIC_KEY_INFO);
|
|
ret = CRYPT_AsnDecodePubKeyInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBool(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (cbEncoded < 3)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if (GET_LEN_BYTES(pbEncoded[1]) > 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if (pbEncoded[1] > 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(BOOL);
|
|
ret = TRUE;
|
|
}
|
|
else if (*pcbStructInfo < sizeof(BOOL))
|
|
{
|
|
*pcbStructInfo = sizeof(BOOL);
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*(BOOL *)pvStructInfo = pbEncoded[2] ? TRUE : FALSE;
|
|
ret = TRUE;
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAltNameEntry(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
PCERT_ALT_NAME_ENTRY entry = (PCERT_ALT_NAME_ENTRY)pvStructInfo;
|
|
DWORD dataLen, lenBytes, bytesNeeded = sizeof(CERT_ALT_NAME_ENTRY);
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (cbEncoded < 2)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
if (1 + lenBytes > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
switch (pbEncoded[0] & ASN_TYPE_MASK)
|
|
{
|
|
case 1: /* rfc822Name */
|
|
case 2: /* dNSName */
|
|
case 6: /* uniformResourceIdentifier */
|
|
bytesNeeded += (dataLen + 1) * sizeof(WCHAR);
|
|
break;
|
|
case 4: /* directoryName */
|
|
case 7: /* iPAddress */
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case 8: /* registeredID */
|
|
ret = CRYPT_AsnDecodeOidIgnoreTag(dwCertEncodingType, NULL,
|
|
pbEncoded, cbEncoded, 0, NULL, NULL, &dataLen);
|
|
if (ret)
|
|
{
|
|
/* FIXME: ugly, shouldn't need to know internals of OID decode
|
|
* function to use it.
|
|
*/
|
|
bytesNeeded += dataLen - sizeof(LPSTR);
|
|
}
|
|
break;
|
|
case 0: /* otherName */
|
|
FIXME("%d: stub\n", pbEncoded[0] & ASN_TYPE_MASK);
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
break;
|
|
case 3: /* x400Address, unimplemented */
|
|
case 5: /* ediPartyName, unimplemented */
|
|
TRACE("type %d unimplemented\n", pbEncoded[0] & ASN_TYPE_MASK);
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
break;
|
|
default:
|
|
TRACE("type %d bad\n", pbEncoded[0] & ASN_TYPE_MASK);
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!entry)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
/* MS used values one greater than the asn1 ones.. sigh */
|
|
entry->dwAltNameChoice = (pbEncoded[0] & 0x7f) + 1;
|
|
switch (pbEncoded[0] & ASN_TYPE_MASK)
|
|
{
|
|
case 1: /* rfc822Name */
|
|
case 2: /* dNSName */
|
|
case 6: /* uniformResourceIdentifier */
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < dataLen; i++)
|
|
entry->u.pwszURL[i] =
|
|
(WCHAR)pbEncoded[1 + lenBytes + i];
|
|
entry->u.pwszURL[i] = 0;
|
|
TRACE("URL is %p (%s)\n", entry->u.pwszURL,
|
|
debugstr_w(entry->u.pwszURL));
|
|
break;
|
|
}
|
|
case 4: /* directoryName */
|
|
entry->dwAltNameChoice = CERT_ALT_NAME_DIRECTORY_NAME;
|
|
/* The data are memory-equivalent with the IPAddress case,
|
|
* fall-through
|
|
*/
|
|
case 7: /* iPAddress */
|
|
/* The next data pointer is in the pwszURL spot, that is,
|
|
* the first 4 bytes. Need to move it to the next spot.
|
|
*/
|
|
entry->u.IPAddress.pbData = (LPBYTE)entry->u.pwszURL;
|
|
entry->u.IPAddress.cbData = dataLen;
|
|
memcpy(entry->u.IPAddress.pbData, pbEncoded + 1 + lenBytes,
|
|
dataLen);
|
|
break;
|
|
case 8: /* registeredID */
|
|
ret = CRYPT_AsnDecodeOidIgnoreTag(dwCertEncodingType, NULL,
|
|
pbEncoded, cbEncoded, 0, NULL, &entry->u.pszRegisteredID,
|
|
&dataLen);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAltNameInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
struct AsnArrayDescriptor arrayDesc = { 0,
|
|
CRYPT_AsnDecodeAltNameEntry, sizeof(CERT_ALT_NAME_ENTRY), TRUE,
|
|
offsetof(CERT_ALT_NAME_ENTRY, u.pwszURL) };
|
|
PCERT_ALT_NAME_INFO info = (PCERT_ALT_NAME_INFO)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (info)
|
|
TRACE("info->rgAltEntry is %p\n", info->rgAltEntry);
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, info ? info->rgAltEntry : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAuthorityKeyId(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_CONTEXT | 0, offsetof(CERT_AUTHORITY_KEY_ID_INFO, KeyId),
|
|
CRYPT_AsnDecodeIntegerInternal, sizeof(CRYPT_DATA_BLOB),
|
|
TRUE, TRUE, offsetof(CERT_AUTHORITY_KEY_ID_INFO, KeyId.pbData), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR| 1,
|
|
offsetof(CERT_AUTHORITY_KEY_ID_INFO, CertIssuer),
|
|
CRYPT_AsnDecodeOctetsInternal, sizeof(CERT_NAME_BLOB), TRUE, TRUE,
|
|
offsetof(CERT_AUTHORITY_KEY_ID_INFO, CertIssuer.pbData), 0 },
|
|
{ ASN_CONTEXT | 2, offsetof(CERT_AUTHORITY_KEY_ID_INFO,
|
|
CertSerialNumber), CRYPT_AsnDecodeIntegerInternal,
|
|
sizeof(CRYPT_INTEGER_BLOB), TRUE, TRUE,
|
|
offsetof(CERT_AUTHORITY_KEY_ID_INFO, CertSerialNumber.pbData), 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAuthorityKeyId2(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_CONTEXT | 0, offsetof(CERT_AUTHORITY_KEY_ID2_INFO, KeyId),
|
|
CRYPT_AsnDecodeIntegerInternal, sizeof(CRYPT_DATA_BLOB),
|
|
TRUE, TRUE, offsetof(CERT_AUTHORITY_KEY_ID2_INFO, KeyId.pbData), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR| 1,
|
|
offsetof(CERT_AUTHORITY_KEY_ID2_INFO, AuthorityCertIssuer),
|
|
CRYPT_AsnDecodeAltNameInternal, sizeof(CERT_ALT_NAME_INFO), TRUE,
|
|
TRUE, offsetof(CERT_AUTHORITY_KEY_ID2_INFO,
|
|
AuthorityCertIssuer.rgAltEntry), 0 },
|
|
{ ASN_CONTEXT | 2, offsetof(CERT_AUTHORITY_KEY_ID2_INFO,
|
|
AuthorityCertSerialNumber), CRYPT_AsnDecodeIntegerInternal,
|
|
sizeof(CRYPT_INTEGER_BLOB), TRUE, TRUE,
|
|
offsetof(CERT_AUTHORITY_KEY_ID2_INFO,
|
|
AuthorityCertSerialNumber.pbData), 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSContent(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD dataLen;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
/* The caller has already checked the tag, no need to check it again.
|
|
* Check the outer length is valid by calling CRYPT_GetLen:
|
|
*/
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD innerLen;
|
|
|
|
pbEncoded += 1 + lenBytes;
|
|
/* Check the inner length is valid by calling CRYPT_GetLen again: */
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &innerLen)))
|
|
{
|
|
ret = CRYPT_AsnDecodeCopyBytes(dwCertEncodingType, NULL,
|
|
pbEncoded, dataLen, dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSContentInfoInternal(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
CRYPT_CONTENT_INFO *info = (CRYPT_CONTENT_INFO *)pvStructInfo;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_OBJECTIDENTIFIER, offsetof(CRYPT_CONTENT_INFO, pszObjId),
|
|
CRYPT_AsnDecodeOidIgnoreTag, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CRYPT_CONTENT_INFO, pszObjId), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 0,
|
|
offsetof(CRYPT_CONTENT_INFO, Content), CRYPT_AsnDecodePKCSContent,
|
|
sizeof(CRYPT_DER_BLOB), TRUE, TRUE,
|
|
offsetof(CRYPT_CONTENT_INFO, Content.pbData), 0 },
|
|
};
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, info ? info->pszObjId : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSContentInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
ret = CRYPT_AsnDecodePKCSContentInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, *pcbStructInfo);
|
|
if (ret)
|
|
{
|
|
CRYPT_CONTENT_INFO *info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (CRYPT_CONTENT_INFO *)pvStructInfo;
|
|
info->pszObjId = (LPSTR)((BYTE *)info +
|
|
sizeof(CRYPT_CONTENT_INFO));
|
|
ret = CRYPT_AsnDecodePKCSContentInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
BOOL CRYPT_AsnDecodePKCSDigestedData(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
CRYPT_DIGESTED_DATA *digestedData, DWORD *pcbDigestedData)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(CRYPT_DIGESTED_DATA, version), CRYPT_AsnDecodeInt,
|
|
sizeof(DWORD), FALSE, FALSE, 0, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CRYPT_DIGESTED_DATA, DigestAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CRYPT_DIGESTED_DATA, DigestAlgorithm.pszObjId),
|
|
0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CRYPT_DIGESTED_DATA, ContentInfo),
|
|
CRYPT_AsnDecodePKCSContentInfoInternal,
|
|
sizeof(CRYPT_CONTENT_INFO), FALSE, TRUE, offsetof(CRYPT_DIGESTED_DATA,
|
|
ContentInfo.pszObjId), 0 },
|
|
{ ASN_OCTETSTRING, offsetof(CRYPT_DIGESTED_DATA, hash),
|
|
CRYPT_AsnDecodeOctetsInternal, sizeof(CRYPT_HASH_BLOB), FALSE, TRUE,
|
|
offsetof(CRYPT_DIGESTED_DATA, hash.pbData), 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, digestedData, pcbDigestedData, NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeAltName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeAltNameEntry, sizeof(CERT_ALT_NAME_ENTRY), TRUE,
|
|
offsetof(CERT_ALT_NAME_ENTRY, u.pwszURL) };
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
struct PATH_LEN_CONSTRAINT
|
|
{
|
|
BOOL fPathLenConstraint;
|
|
DWORD dwPathLenConstraint;
|
|
};
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePathLenConstraint(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pvStructInfo, *pcbStructInfo);
|
|
|
|
if (cbEncoded)
|
|
{
|
|
if (pbEncoded[0] == ASN_INTEGER)
|
|
{
|
|
DWORD bytesNeeded = sizeof(struct PATH_LEN_CONSTRAINT);
|
|
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
*pcbStructInfo = bytesNeeded;
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
struct PATH_LEN_CONSTRAINT *constraint =
|
|
(struct PATH_LEN_CONSTRAINT *)pvStructInfo;
|
|
DWORD size = sizeof(constraint->dwPathLenConstraint);
|
|
|
|
ret = CRYPT_AsnDecodeInt(dwCertEncodingType, X509_INTEGER,
|
|
pbEncoded, cbEncoded, 0, NULL,
|
|
&constraint->dwPathLenConstraint, &size);
|
|
if (ret)
|
|
constraint->fPathLenConstraint = TRUE;
|
|
TRACE("got an int, dwPathLenConstraint is %d\n",
|
|
constraint->dwPathLenConstraint);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeSubtreeConstraints(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeCopyBytes, sizeof(CERT_NAME_BLOB), TRUE,
|
|
offsetof(CERT_NAME_BLOB, pbData) };
|
|
struct GenericArray *entries = (struct GenericArray *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo,
|
|
entries ? entries->rgItems : NULL);
|
|
TRACE("Returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBasicConstraints(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_BITSTRING, offsetof(CERT_BASIC_CONSTRAINTS_INFO, SubjectType),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_BASIC_CONSTRAINTS_INFO, SubjectType.pbData), 0 },
|
|
{ ASN_INTEGER, offsetof(CERT_BASIC_CONSTRAINTS_INFO,
|
|
fPathLenConstraint), CRYPT_AsnDecodePathLenConstraint,
|
|
sizeof(struct PATH_LEN_CONSTRAINT), TRUE, FALSE, 0, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CERT_BASIC_CONSTRAINTS_INFO,
|
|
cSubtreesConstraint), CRYPT_AsnDecodeSubtreeConstraints,
|
|
sizeof(struct GenericArray), TRUE, TRUE,
|
|
offsetof(CERT_BASIC_CONSTRAINTS_INFO, rgSubtreesConstraint), 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBasicConstraints2(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_BOOL, offsetof(CERT_BASIC_CONSTRAINTS2_INFO, fCA),
|
|
CRYPT_AsnDecodeBool, sizeof(BOOL), TRUE, FALSE, 0, 0 },
|
|
{ ASN_INTEGER, offsetof(CERT_BASIC_CONSTRAINTS2_INFO,
|
|
fPathLenConstraint), CRYPT_AsnDecodePathLenConstraint,
|
|
sizeof(struct PATH_LEN_CONSTRAINT), TRUE, FALSE, 0, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
#define RSA1_MAGIC 0x31415352
|
|
|
|
struct DECODED_RSA_PUB_KEY
|
|
{
|
|
DWORD pubexp;
|
|
CRYPT_INTEGER_BLOB modulus;
|
|
};
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRsaPubKey(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(struct DECODED_RSA_PUB_KEY, modulus),
|
|
CRYPT_AsnDecodeUnsignedIntegerInternal, sizeof(CRYPT_INTEGER_BLOB),
|
|
FALSE, TRUE, offsetof(struct DECODED_RSA_PUB_KEY, modulus.pbData),
|
|
0 },
|
|
{ ASN_INTEGER, offsetof(struct DECODED_RSA_PUB_KEY, pubexp),
|
|
CRYPT_AsnDecodeInt, sizeof(DWORD), FALSE, FALSE, 0, 0 },
|
|
};
|
|
struct DECODED_RSA_PUB_KEY *decodedKey = NULL;
|
|
DWORD size = 0;
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded,
|
|
CRYPT_DECODE_ALLOC_FLAG, NULL, &decodedKey, &size, NULL);
|
|
if (ret)
|
|
{
|
|
DWORD bytesNeeded = sizeof(BLOBHEADER) + sizeof(RSAPUBKEY) +
|
|
decodedKey->modulus.cbData;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
BLOBHEADER *hdr;
|
|
RSAPUBKEY *rsaPubKey;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
hdr = (BLOBHEADER *)pvStructInfo;
|
|
hdr->bType = PUBLICKEYBLOB;
|
|
hdr->bVersion = CUR_BLOB_VERSION;
|
|
hdr->reserved = 0;
|
|
hdr->aiKeyAlg = CALG_RSA_KEYX;
|
|
rsaPubKey = (RSAPUBKEY *)((BYTE *)pvStructInfo +
|
|
sizeof(BLOBHEADER));
|
|
rsaPubKey->magic = RSA1_MAGIC;
|
|
rsaPubKey->pubexp = decodedKey->pubexp;
|
|
rsaPubKey->bitlen = decodedKey->modulus.cbData * 8;
|
|
memcpy((BYTE *)pvStructInfo + sizeof(BLOBHEADER) +
|
|
sizeof(RSAPUBKEY), decodedKey->modulus.pbData,
|
|
decodedKey->modulus.cbData);
|
|
}
|
|
LocalFree(decodedKey);
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeOctetsInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
bytesNeeded = sizeof(CRYPT_DATA_BLOB);
|
|
else
|
|
bytesNeeded = dataLen + sizeof(CRYPT_DATA_BLOB);
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
*pcbStructInfo = bytesNeeded;
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_DATA_BLOB *blob;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
blob = (CRYPT_DATA_BLOB *)pvStructInfo;
|
|
blob->cbData = dataLen;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
blob->pbData = (BYTE *)pbEncoded + 1 + lenBytes;
|
|
else
|
|
{
|
|
assert(blob->pbData);
|
|
if (blob->cbData)
|
|
memcpy(blob->pbData, pbEncoded + 1 + lenBytes,
|
|
blob->cbData);
|
|
}
|
|
}
|
|
}
|
|
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)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if (!cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[0] != ASN_OCTETSTRING)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
else if ((ret = CRYPT_AsnDecodeOctetsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded)))
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CRYPT_DATA_BLOB *blob;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_DATA_BLOB *)pvStructInfo;
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_DATA_BLOB);
|
|
ret = CRYPT_AsnDecodeOctetsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBitsInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("(%p, %d, 0x%08x, %p, %p, %d)\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (pbEncoded[0] == ASN_BITSTRING)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
bytesNeeded = sizeof(CRYPT_BIT_BLOB);
|
|
else
|
|
bytesNeeded = dataLen - 1 + sizeof(CRYPT_BIT_BLOB);
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_BIT_BLOB *blob;
|
|
|
|
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
|
|
{
|
|
assert(blob->pbData);
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeBits(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("(%p, %d, 0x%08x, %p, %p, %p)\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if ((ret = CRYPT_AsnDecodeBitsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded)))
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CRYPT_BIT_BLOB *blob;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_BIT_BLOB *)pvStructInfo;
|
|
blob->pbData = (BYTE *)pvStructInfo + sizeof(CRYPT_BIT_BLOB);
|
|
ret = CRYPT_AsnDecodeBitsInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
TRACE("returning %d (%08x)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeInt(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(int);
|
|
return TRUE;
|
|
}
|
|
__TRY
|
|
{
|
|
BYTE buf[sizeof(CRYPT_INTEGER_BLOB) + sizeof(int)];
|
|
CRYPT_INTEGER_BLOB *blob = (CRYPT_INTEGER_BLOB *)buf;
|
|
DWORD size = sizeof(buf);
|
|
|
|
blob->pbData = buf + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (pbEncoded[0] != ASN_INTEGER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
ret = CRYPT_AsnDecodeIntegerInternal(dwCertEncodingType,
|
|
X509_MULTI_BYTE_INTEGER, pbEncoded, cbEncoded, 0, NULL, &buf,
|
|
&size);
|
|
if (ret)
|
|
{
|
|
if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, sizeof(int))))
|
|
{
|
|
int val, i;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
if (blob->pbData[blob->cbData - 1] & 0x80)
|
|
{
|
|
/* initialize to a negative value to sign-extend */
|
|
val = -1;
|
|
}
|
|
else
|
|
val = 0;
|
|
for (i = 0; i < blob->cbData; i++)
|
|
{
|
|
val <<= 8;
|
|
val |= blob->pbData[blob->cbData - i - 1];
|
|
}
|
|
memcpy(pvStructInfo, &val, sizeof(int));
|
|
}
|
|
}
|
|
else if (GetLastError() == ERROR_MORE_DATA)
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeIntegerInternal(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = dataLen + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_INTEGER_BLOB *blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
blob->cbData = dataLen;
|
|
assert(blob->pbData);
|
|
if (blob->cbData)
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < blob->cbData; i++)
|
|
{
|
|
blob->pbData[i] = *(pbEncoded + 1 + lenBytes +
|
|
dataLen - i - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if (pbEncoded[0] != ASN_INTEGER)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
ret = CRYPT_AsnDecodeIntegerInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded);
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CRYPT_INTEGER_BLOB *blob;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
blob->pbData = (BYTE *)pvStructInfo +
|
|
sizeof(CRYPT_INTEGER_BLOB);
|
|
ret = CRYPT_AsnDecodeIntegerInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnsignedIntegerInternal(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (pbEncoded[0] == ASN_INTEGER)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = dataLen + sizeof(CRYPT_INTEGER_BLOB);
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_INTEGER_BLOB *blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
blob->cbData = dataLen;
|
|
assert(blob->pbData);
|
|
/* 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 +
|
|
dataLen - i - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeUnsignedInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
if ((ret = CRYPT_AsnDecodeUnsignedIntegerInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &bytesNeeded)))
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CRYPT_INTEGER_BLOB *blob;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
blob = (CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
blob->pbData = (BYTE *)pvStructInfo +
|
|
sizeof(CRYPT_INTEGER_BLOB);
|
|
ret = CRYPT_AsnDecodeUnsignedIntegerInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
&bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeEnumerated(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(int);
|
|
return TRUE;
|
|
}
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == ASN_ENUMERATED)
|
|
{
|
|
unsigned int val = 0, i;
|
|
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[1] == 0)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
/* 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 ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, sizeof(unsigned int))))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
memcpy(pvStructInfo, &val, sizeof(unsigned int));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
/* Modifies word, pbEncoded, and len, and magically sets a value ret to FALSE
|
|
* if it fails.
|
|
*/
|
|
#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); \
|
|
ret = FALSE; \
|
|
} \
|
|
else \
|
|
{ \
|
|
(word) *= 10; \
|
|
(word) += *(pbEncoded)++ - '0'; \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
static BOOL CRYPT_AsnDecodeTimeZone(const BYTE *pbEncoded, DWORD len,
|
|
SYSTEMTIME *sysTime)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
ret = TRUE;
|
|
if (len >= 3 && (*pbEncoded == '+' || *pbEncoded == '-'))
|
|
{
|
|
WORD hours, minutes = 0;
|
|
BYTE sign = *pbEncoded++;
|
|
|
|
len--;
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, hours);
|
|
if (ret && hours >= 24)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else if (len >= 2)
|
|
{
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2, minutes);
|
|
if (ret && minutes >= 60)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
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)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(FILETIME);
|
|
return TRUE;
|
|
}
|
|
__TRY
|
|
{
|
|
ret = TRUE;
|
|
if (pbEncoded[0] == ASN_UTCTIME)
|
|
{
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[1] > 0x7f)
|
|
{
|
|
/* long-form date strings really can't be valid */
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
SYSTEMTIME sysTime = { 0 };
|
|
BYTE len = pbEncoded[1];
|
|
|
|
if (len < MIN_ENCODED_TIME_LENGTH)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
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 (ret && 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);
|
|
if (ret)
|
|
ret = CRYPT_AsnDecodeTimeZone(pbEncoded, len,
|
|
&sysTime);
|
|
}
|
|
if (ret && (ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo,
|
|
sizeof(FILETIME))))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
ret = SystemTimeToFileTime(&sysTime,
|
|
(FILETIME *)pvStructInfo);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
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)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!pvStructInfo)
|
|
{
|
|
*pcbStructInfo = sizeof(FILETIME);
|
|
return TRUE;
|
|
}
|
|
__TRY
|
|
{
|
|
ret = TRUE;
|
|
if (pbEncoded[0] == ASN_GENERALTIME)
|
|
{
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[1] > 0x7f)
|
|
{
|
|
/* long-form date strings really can't be valid */
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
BYTE len = pbEncoded[1];
|
|
|
|
if (len < MIN_ENCODED_TIME_LENGTH)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
SYSTEMTIME sysTime = { 0 };
|
|
|
|
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 (ret && len > 0)
|
|
{
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2,
|
|
sysTime.wMinute);
|
|
if (ret && len > 0)
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, 2,
|
|
sysTime.wSecond);
|
|
if (ret && len > 0 && (*pbEncoded == '.' ||
|
|
*pbEncoded == ','))
|
|
{
|
|
BYTE digits;
|
|
|
|
pbEncoded++;
|
|
len--;
|
|
/* workaround macro weirdness */
|
|
digits = min(len, 3);
|
|
CRYPT_TIME_GET_DIGITS(pbEncoded, len, digits,
|
|
sysTime.wMilliseconds);
|
|
}
|
|
if (ret)
|
|
ret = CRYPT_AsnDecodeTimeZone(pbEncoded, len,
|
|
&sysTime);
|
|
}
|
|
if (ret && (ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo,
|
|
sizeof(FILETIME))))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
ret = SystemTimeToFileTime(&sysTime,
|
|
(FILETIME *)pvStructInfo);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
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;
|
|
|
|
__TRY
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeSequenceOfAny(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == ASN_SEQUENCEOF)
|
|
{
|
|
DWORD bytesNeeded, dataLen, remainingLen, cValue;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes;
|
|
const BYTE *ptr;
|
|
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
bytesNeeded = sizeof(CRYPT_SEQUENCE_OF_ANY);
|
|
cValue = 0;
|
|
ptr = pbEncoded + 1 + lenBytes;
|
|
remainingLen = dataLen;
|
|
while (ret && remainingLen)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
ret = CRYPT_GetLen(ptr, remainingLen, &nextLen);
|
|
if (ret)
|
|
{
|
|
DWORD nextLenBytes = GET_LEN_BYTES(ptr[1]);
|
|
|
|
remainingLen -= 1 + nextLenBytes + nextLen;
|
|
ptr += 1 + nextLenBytes + nextLen;
|
|
bytesNeeded += sizeof(CRYPT_DER_BLOB);
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += 1 + nextLenBytes + nextLen;
|
|
cValue++;
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
CRYPT_SEQUENCE_OF_ANY *seq;
|
|
BYTE *nextPtr;
|
|
DWORD i;
|
|
|
|
if ((ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara,
|
|
pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
seq = (CRYPT_SEQUENCE_OF_ANY *)pvStructInfo;
|
|
seq->cValue = cValue;
|
|
seq->rgValue = (CRYPT_DER_BLOB *)((BYTE *)seq +
|
|
sizeof(*seq));
|
|
nextPtr = (BYTE *)seq->rgValue +
|
|
cValue * sizeof(CRYPT_DER_BLOB);
|
|
ptr = pbEncoded + 1 + lenBytes;
|
|
remainingLen = dataLen;
|
|
i = 0;
|
|
while (ret && remainingLen)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
ret = CRYPT_GetLen(ptr, remainingLen, &nextLen);
|
|
if (ret)
|
|
{
|
|
DWORD nextLenBytes = GET_LEN_BYTES(ptr[1]);
|
|
|
|
seq->rgValue[i].cbData = 1 + nextLenBytes +
|
|
nextLen;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
seq->rgValue[i].pbData = (BYTE *)ptr;
|
|
else
|
|
{
|
|
seq->rgValue[i].pbData = nextPtr;
|
|
memcpy(nextPtr, ptr, 1 + nextLenBytes +
|
|
nextLen);
|
|
nextPtr += 1 + nextLenBytes + nextLen;
|
|
}
|
|
remainingLen -= 1 + nextLenBytes + nextLen;
|
|
ptr += 1 + nextLenBytes + nextLen;
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeDistPointName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (pbEncoded[0] == (ASN_CONTEXT | ASN_CONSTRUCTOR | 0))
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = {
|
|
ASN_CONTEXT | ASN_CONSTRUCTOR | 0, CRYPT_AsnDecodeAltNameEntry,
|
|
sizeof(CERT_ALT_NAME_ENTRY), TRUE,
|
|
offsetof(CERT_ALT_NAME_ENTRY, u.pwszURL) };
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
if (dataLen)
|
|
{
|
|
DWORD nameLen;
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc,
|
|
pbEncoded + 1 + lenBytes, cbEncoded - 1 - lenBytes,
|
|
0, NULL, NULL, &nameLen, NULL);
|
|
bytesNeeded = sizeof(CRL_DIST_POINT_NAME) + nameLen;
|
|
}
|
|
else
|
|
bytesNeeded = sizeof(CRL_DIST_POINT_NAME);
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
CRL_DIST_POINT_NAME *name = (CRL_DIST_POINT_NAME *)pvStructInfo;
|
|
|
|
if (dataLen)
|
|
{
|
|
name->dwDistPointNameChoice = CRL_DIST_POINT_FULL_NAME;
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc,
|
|
pbEncoded + 1 + lenBytes, cbEncoded - 1 - lenBytes,
|
|
0, NULL, &name->u.FullName, pcbStructInfo,
|
|
name->u.FullName.rgAltEntry);
|
|
}
|
|
else
|
|
name->dwDistPointNameChoice = CRL_DIST_POINT_NO_NAME;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeDistPoint(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 0, offsetof(CRL_DIST_POINT,
|
|
DistPointName), CRYPT_AsnDecodeDistPointName,
|
|
sizeof(CRL_DIST_POINT_NAME), TRUE, TRUE, offsetof(CRL_DIST_POINT,
|
|
DistPointName.u.FullName.rgAltEntry), 0 },
|
|
{ ASN_CONTEXT | 1, offsetof(CRL_DIST_POINT, ReasonFlags),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), TRUE, TRUE,
|
|
offsetof(CRL_DIST_POINT, ReasonFlags.pbData), 0 },
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 2, offsetof(CRL_DIST_POINT, CRLIssuer),
|
|
CRYPT_AsnDecodeAltNameInternal, sizeof(CERT_ALT_NAME_INFO), TRUE, TRUE,
|
|
offsetof(CRL_DIST_POINT, CRLIssuer.rgAltEntry), 0 },
|
|
};
|
|
BOOL ret;
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded,
|
|
dwFlags, pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeCRLDistPoints(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeDistPoint, sizeof(CRL_DIST_POINT), TRUE,
|
|
offsetof(CRL_DIST_POINT, DistPointName.u.FullName.rgAltEntry) };
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeEnhancedKeyUsage(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_SEQUENCEOF,
|
|
CRYPT_AsnDecodeOidInternal, sizeof(LPSTR), TRUE, 0 };
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeIssuingDistPoint(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 0, offsetof(CRL_ISSUING_DIST_POINT,
|
|
DistPointName), CRYPT_AsnDecodeDistPointName,
|
|
sizeof(CRL_DIST_POINT_NAME), TRUE, TRUE,
|
|
offsetof(CRL_ISSUING_DIST_POINT,
|
|
DistPointName.u.FullName.rgAltEntry), 0 },
|
|
{ ASN_CONTEXT | 1, offsetof(CRL_ISSUING_DIST_POINT,
|
|
fOnlyContainsUserCerts), CRYPT_AsnDecodeBool, sizeof(BOOL), TRUE,
|
|
FALSE, 0 },
|
|
{ ASN_CONTEXT | 2, offsetof(CRL_ISSUING_DIST_POINT,
|
|
fOnlyContainsCACerts), CRYPT_AsnDecodeBool, sizeof(BOOL), TRUE,
|
|
FALSE, 0 },
|
|
{ ASN_CONTEXT | 3, offsetof(CRL_ISSUING_DIST_POINT,
|
|
OnlySomeReasonFlags), CRYPT_AsnDecodeBitsInternal,
|
|
sizeof(CRYPT_BIT_BLOB), TRUE, TRUE, offsetof(CRL_ISSUING_DIST_POINT,
|
|
OnlySomeReasonFlags.pbData), 0 },
|
|
{ ASN_CONTEXT | 4, offsetof(CRL_ISSUING_DIST_POINT,
|
|
fIndirectCRL), CRYPT_AsnDecodeBool, sizeof(BOOL), TRUE, FALSE, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded,
|
|
dwFlags, pDecodePara, pvStructInfo, pcbStructInfo, NULL);
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeIssuerSerialNumber(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ 0, offsetof(CERT_ISSUER_SERIAL_NUMBER, Issuer), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CERT_ISSUER_SERIAL_NUMBER,
|
|
Issuer.pbData) },
|
|
{ ASN_INTEGER, offsetof(CERT_ISSUER_SERIAL_NUMBER, SerialNumber),
|
|
CRYPT_AsnDecodeIntegerInternal, sizeof(CRYPT_INTEGER_BLOB), FALSE,
|
|
TRUE, offsetof(CERT_ISSUER_SERIAL_NUMBER, SerialNumber.pbData), 0 },
|
|
};
|
|
CERT_ISSUER_SERIAL_NUMBER *issuerSerial =
|
|
(CERT_ISSUER_SERIAL_NUMBER *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded,
|
|
dwFlags, pDecodePara, pvStructInfo, pcbStructInfo,
|
|
issuerSerial ? issuerSerial->Issuer.pbData : NULL);
|
|
if (ret && issuerSerial && !issuerSerial->SerialNumber.cbData)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
TRACE("returning %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSSignerInfoInternal(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
CMSG_SIGNER_INFO *info = (CMSG_SIGNER_INFO *)pvStructInfo;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(CMSG_SIGNER_INFO, dwVersion),
|
|
CRYPT_AsnDecodeInt, sizeof(DWORD), FALSE, FALSE, 0, 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CMSG_SIGNER_INFO, Issuer),
|
|
CRYPT_AsnDecodeIssuerSerialNumber, sizeof(CERT_ISSUER_SERIAL_NUMBER),
|
|
FALSE, TRUE, offsetof(CMSG_SIGNER_INFO, Issuer.pbData), 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CMSG_SIGNER_INFO, HashAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CMSG_SIGNER_INFO, HashAlgorithm.pszObjId), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_CONTEXT | 0,
|
|
offsetof(CMSG_SIGNER_INFO, AuthAttrs),
|
|
CRYPT_AsnDecodePKCSAttributesInternal, sizeof(CRYPT_ATTRIBUTES),
|
|
TRUE, TRUE, offsetof(CMSG_SIGNER_INFO, AuthAttrs.rgAttr), 0 },
|
|
{ ASN_SEQUENCEOF, offsetof(CMSG_SIGNER_INFO, HashEncryptionAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CMSG_SIGNER_INFO,
|
|
HashEncryptionAlgorithm.pszObjId), 0 },
|
|
{ ASN_OCTETSTRING, offsetof(CMSG_SIGNER_INFO, EncryptedHash),
|
|
CRYPT_AsnDecodeOctetsInternal, sizeof(CRYPT_DER_BLOB),
|
|
FALSE, TRUE, offsetof(CMSG_SIGNER_INFO, EncryptedHash.pbData), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_CONTEXT | 1,
|
|
offsetof(CMSG_SIGNER_INFO, UnauthAttrs),
|
|
CRYPT_AsnDecodePKCSAttributesInternal, sizeof(CRYPT_ATTRIBUTES),
|
|
TRUE, TRUE, offsetof(CMSG_SIGNER_INFO, UnauthAttrs.rgAttr), 0 },
|
|
};
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded,
|
|
dwFlags, pDecodePara, pvStructInfo, pcbStructInfo,
|
|
info ? info->Issuer.pbData : NULL);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodePKCSSignerInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
ret = CRYPT_AsnDecodePKCSSignerInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL, pcbStructInfo);
|
|
if (ret && pvStructInfo)
|
|
{
|
|
ret = CRYPT_DecodeEnsureSpace(dwFlags, pDecodePara, pvStructInfo,
|
|
pcbStructInfo, *pcbStructInfo);
|
|
if (ret)
|
|
{
|
|
CMSG_SIGNER_INFO *info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (CMSG_SIGNER_INFO *)pvStructInfo;
|
|
info->Issuer.pbData = ((BYTE *)info +
|
|
sizeof(CMSG_SIGNER_INFO));
|
|
ret = CRYPT_AsnDecodePKCSSignerInfoInternal(dwCertEncodingType,
|
|
lpszStructType, pbEncoded, cbEncoded,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, pvStructInfo,
|
|
pcbStructInfo);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
}
|
|
__ENDTRY
|
|
TRACE("returning %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_DecodeSignerArray(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
struct AsnArrayDescriptor arrayDesc = { ASN_CONSTRUCTOR | ASN_SETOF,
|
|
CRYPT_AsnDecodePKCSSignerInfoInternal, sizeof(CMSG_SIGNER_INFO), TRUE,
|
|
offsetof(CMSG_SIGNER_INFO, Issuer.pbData) };
|
|
struct GenericArray *array = (struct GenericArray *)pvStructInfo;
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeArray(&arrayDesc, pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, array ? array->rgItems : NULL);
|
|
return ret;
|
|
}
|
|
|
|
BOOL CRYPT_AsnDecodePKCSSignedInfo(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
CRYPT_SIGNED_INFO *signedInfo, DWORD *pcbSignedInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ ASN_INTEGER, offsetof(CRYPT_SIGNED_INFO, version), CRYPT_AsnDecodeInt,
|
|
sizeof(DWORD), FALSE, FALSE, 0, 0 },
|
|
/* Placeholder for the hash algorithms - redundant with those in the
|
|
* signers, so just ignore them.
|
|
*/
|
|
{ ASN_CONSTRUCTOR | ASN_SETOF, 0, NULL, 0, TRUE, FALSE, 0, 0 },
|
|
{ ASN_SEQUENCE, offsetof(CRYPT_SIGNED_INFO, content),
|
|
CRYPT_AsnDecodePKCSContentInfoInternal, sizeof(CRYPT_CONTENT_INFO),
|
|
FALSE, TRUE, offsetof(CRYPT_SIGNED_INFO, content.pszObjId), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_CONTEXT | 0,
|
|
offsetof(CRYPT_SIGNED_INFO, cCertEncoded),
|
|
CRYPT_DecodeDERArray, sizeof(struct GenericArray), TRUE, TRUE,
|
|
offsetof(CRYPT_SIGNED_INFO, rgCertEncoded), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_CONTEXT | 1,
|
|
offsetof(CRYPT_SIGNED_INFO, cCrlEncoded), CRYPT_DecodeDERArray,
|
|
sizeof(struct GenericArray), TRUE, TRUE,
|
|
offsetof(CRYPT_SIGNED_INFO, rgCrlEncoded), 0 },
|
|
{ ASN_CONSTRUCTOR | ASN_SETOF, offsetof(CRYPT_SIGNED_INFO, cSignerInfo),
|
|
CRYPT_DecodeSignerArray, sizeof(struct GenericArray), TRUE, TRUE,
|
|
offsetof(CRYPT_SIGNED_INFO, rgSignerInfo), 0 },
|
|
};
|
|
|
|
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, signedInfo, *pcbSignedInfo);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, signedInfo, pcbSignedInfo, NULL);
|
|
TRACE("returning %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptDecodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
static HCRYPTOIDFUNCSET set = NULL;
|
|
BOOL ret = FALSE;
|
|
CryptDecodeObjectExFunc decodeFunc = NULL;
|
|
HCRYPTOIDFUNCADDR hFunc = NULL;
|
|
|
|
TRACE("(0x%08x, %s, %p, %d, 0x%08x, %p, %p, %p)\n",
|
|
dwCertEncodingType, debugstr_a(lpszStructType), 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;
|
|
}
|
|
if (!cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
return FALSE;
|
|
}
|
|
if (cbEncoded > MAX_ENCODED_LEN)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
return FALSE;
|
|
}
|
|
|
|
SetLastError(NOERROR);
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG && pvStructInfo)
|
|
*(BYTE **)pvStructInfo = NULL;
|
|
if (!HIWORD(lpszStructType))
|
|
{
|
|
switch (LOWORD(lpszStructType))
|
|
{
|
|
case (WORD)X509_CERT:
|
|
decodeFunc = CRYPT_AsnDecodeCertSignedContent;
|
|
break;
|
|
case (WORD)X509_CERT_TO_BE_SIGNED:
|
|
decodeFunc = CRYPT_AsnDecodeCert;
|
|
break;
|
|
case (WORD)X509_CERT_CRL_TO_BE_SIGNED:
|
|
decodeFunc = CRYPT_AsnDecodeCRL;
|
|
break;
|
|
case (WORD)X509_EXTENSIONS:
|
|
decodeFunc = CRYPT_AsnDecodeExtensions;
|
|
break;
|
|
case (WORD)X509_NAME_VALUE:
|
|
decodeFunc = CRYPT_AsnDecodeNameValue;
|
|
break;
|
|
case (WORD)X509_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeName;
|
|
break;
|
|
case (WORD)X509_PUBLIC_KEY_INFO:
|
|
decodeFunc = CRYPT_AsnDecodePubKeyInfo;
|
|
break;
|
|
case (WORD)X509_AUTHORITY_KEY_ID:
|
|
decodeFunc = CRYPT_AsnDecodeAuthorityKeyId;
|
|
break;
|
|
case (WORD)X509_ALTERNATE_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
break;
|
|
case (WORD)X509_BASIC_CONSTRAINTS:
|
|
decodeFunc = CRYPT_AsnDecodeBasicConstraints;
|
|
break;
|
|
case (WORD)X509_BASIC_CONSTRAINTS2:
|
|
decodeFunc = CRYPT_AsnDecodeBasicConstraints2;
|
|
break;
|
|
case (WORD)RSA_CSP_PUBLICKEYBLOB:
|
|
decodeFunc = CRYPT_AsnDecodeRsaPubKey;
|
|
break;
|
|
case (WORD)X509_UNICODE_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeUnicodeName;
|
|
break;
|
|
case (WORD)PKCS_ATTRIBUTE:
|
|
decodeFunc = CRYPT_AsnDecodePKCSAttribute;
|
|
break;
|
|
case (WORD)X509_UNICODE_NAME_VALUE:
|
|
decodeFunc = CRYPT_AsnDecodeUnicodeNameValue;
|
|
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)X509_AUTHORITY_KEY_ID2:
|
|
decodeFunc = CRYPT_AsnDecodeAuthorityKeyId2;
|
|
break;
|
|
case (WORD)PKCS_CONTENT_INFO:
|
|
decodeFunc = CRYPT_AsnDecodePKCSContentInfo;
|
|
break;
|
|
case (WORD)X509_SEQUENCE_OF_ANY:
|
|
decodeFunc = CRYPT_AsnDecodeSequenceOfAny;
|
|
break;
|
|
case (WORD)PKCS_UTC_TIME:
|
|
decodeFunc = CRYPT_AsnDecodeUtcTime;
|
|
break;
|
|
case (WORD)X509_CRL_DIST_POINTS:
|
|
decodeFunc = CRYPT_AsnDecodeCRLDistPoints;
|
|
break;
|
|
case (WORD)X509_ENHANCED_KEY_USAGE:
|
|
decodeFunc = CRYPT_AsnDecodeEnhancedKeyUsage;
|
|
break;
|
|
case (WORD)PKCS_ATTRIBUTES:
|
|
decodeFunc = CRYPT_AsnDecodePKCSAttributes;
|
|
break;
|
|
case (WORD)X509_ISSUING_DIST_POINT:
|
|
decodeFunc = CRYPT_AsnDecodeIssuingDistPoint;
|
|
break;
|
|
case (WORD)PKCS7_SIGNER_INFO:
|
|
decodeFunc = CRYPT_AsnDecodePKCSSignerInfo;
|
|
break;
|
|
default:
|
|
FIXME("%d: unimplemented\n", LOWORD(lpszStructType));
|
|
}
|
|
}
|
|
else if (!strcmp(lpszStructType, szOID_CERT_EXTENSIONS))
|
|
decodeFunc = CRYPT_AsnDecodeExtensions;
|
|
else if (!strcmp(lpszStructType, szOID_RSA_signingTime))
|
|
decodeFunc = CRYPT_AsnDecodeUtcTime;
|
|
else if (!strcmp(lpszStructType, szOID_AUTHORITY_KEY_IDENTIFIER))
|
|
decodeFunc = CRYPT_AsnDecodeAuthorityKeyId;
|
|
else if (!strcmp(lpszStructType, szOID_AUTHORITY_KEY_IDENTIFIER2))
|
|
decodeFunc = CRYPT_AsnDecodeAuthorityKeyId2;
|
|
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 if (!strcmp(lpszStructType, szOID_BASIC_CONSTRAINTS))
|
|
decodeFunc = CRYPT_AsnDecodeBasicConstraints;
|
|
else if (!strcmp(lpszStructType, szOID_BASIC_CONSTRAINTS2))
|
|
decodeFunc = CRYPT_AsnDecodeBasicConstraints2;
|
|
else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME))
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME2))
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_NEXT_UPDATE_LOCATION))
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME))
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME2))
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_CRL_DIST_POINTS))
|
|
decodeFunc = CRYPT_AsnDecodeCRLDistPoints;
|
|
else if (!strcmp(lpszStructType, szOID_ENHANCED_KEY_USAGE))
|
|
decodeFunc = CRYPT_AsnDecodeEnhancedKeyUsage;
|
|
else if (!strcmp(lpszStructType, szOID_ISSUING_DIST_POINT))
|
|
decodeFunc = CRYPT_AsnDecodeIssuingDistPoint;
|
|
else
|
|
TRACE("OID %s not found or unimplemented, looking for DLL\n",
|
|
debugstr_a(lpszStructType));
|
|
if (!decodeFunc)
|
|
{
|
|
if (!set)
|
|
set = CryptInitOIDFunctionSet(CRYPT_OID_DECODE_OBJECT_EX_FUNC, 0);
|
|
CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0,
|
|
(void **)&decodeFunc, &hFunc);
|
|
}
|
|
if (decodeFunc)
|
|
ret = decodeFunc(dwCertEncodingType, lpszStructType, pbEncoded,
|
|
cbEncoded, dwFlags, pDecodePara, pvStructInfo, pcbStructInfo);
|
|
else
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
if (hFunc)
|
|
CryptFreeOIDFunctionAddress(hFunc, 0);
|
|
return ret;
|
|
}
|