5702 lines
193 KiB
C
5702 lines
193 KiB
C
/*
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* Copyright 2002 Mike McCormack for CodeWeavers
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* Copyright 2005 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* This file implements ASN.1 DER encoding and decoding of a limited set of
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* types. It isn't a full ASN.1 implementation. Microsoft implements BER
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* encoding of many of the basic types in msasn1.dll, but that interface is
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* undocumented, so I implement them here.
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*
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* References:
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* "A Layman's Guide to a Subset of ASN.1, BER, and DER", by Burton Kaliski
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* (available online, look for a PDF copy as the HTML versions tend to have
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* translation errors.)
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*
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* RFC3280, http://www.faqs.org/rfcs/rfc3280.html
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*
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* MSDN, especially:
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* http://msdn.microsoft.com/library/en-us/seccrypto/security/constants_for_cryptencodeobject_and_cryptdecodeobject.asp
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*/
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#include <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 "excpt.h"
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#include "wincrypt.h"
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#include "winreg.h"
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#include "snmp.h"
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#include "wine/debug.h"
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#include "wine/exception.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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/* a few asn.1 tags we need */
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#define ASN_BOOL (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x01)
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#define ASN_BITSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x03)
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#define ASN_OCTETSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x04)
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#define ASN_ENUMERATED (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x0a)
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#define ASN_SETOF (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x11)
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#define ASN_NUMERICSTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x12)
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#define ASN_PRINTABLESTRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x13)
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#define ASN_IA5STRING (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x16)
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#define ASN_UTCTIME (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x17)
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#define ASN_GENERALTIME (ASN_UNIVERSAL | ASN_PRIMITIVE | 0x18)
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#define ASN_FLAGS_MASK 0xf0
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#define ASN_TYPE_MASK 0x0f
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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static const WCHAR szDllName[] = { 'D','l','l',0 };
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typedef BOOL (WINAPI *CryptEncodeObjectFunc)(DWORD, LPCSTR, const void *,
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BYTE *, DWORD *);
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typedef BOOL (WINAPI *CryptEncodeObjectExFunc)(DWORD, LPCSTR, const void *,
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DWORD, PCRYPT_ENCODE_PARA, BYTE *, DWORD *);
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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 encoders/decoders. They follow the Ex style
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* prototypes. The dwCertEncodingType and lpszStructType are ignored by the
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* built-in functions, but the parameters are retained to simplify
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* CryptEncodeObjectEx/CryptDecodeObjectEx, since they must call functions in
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* external DLLs that follow these signatures.
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* FIXME: some built-in functions are suitable to be called directly by
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* CryptEncodeObjectEx/CryptDecodeObjectEx (they implement exception handling
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* and memory allocation if requested), others are only suitable to be called
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* internally. Comment which are which.
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*/
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static BOOL WINAPI CRYPT_AsnEncodeOid(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeExtensions(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeBool(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodePubKeyInfo(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeOctets(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeBits(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeBitsSwapBytes(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeInt(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeInteger(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeUnsignedInteger(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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static BOOL WINAPI CRYPT_AsnEncodeChoiceOfTime(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded);
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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_AsnDecodePubKeyInfo(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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static BOOL WINAPI CRYPT_AsnDecodeOid(const BYTE *pbEncoded, DWORD cbEncoded,
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DWORD dwFlags, LPSTR pszObjId, DWORD *pcbObjId);
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/* Assumes algo->Parameters.pbData is set ahead of time */
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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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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.
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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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/* filter for page-fault exceptions */
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static WINE_EXCEPTION_FILTER(page_fault)
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{
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if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
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return EXCEPTION_EXECUTE_HANDLER;
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return EXCEPTION_CONTINUE_SEARCH;
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}
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static char *CRYPT_GetKeyName(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID)
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{
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static const char szEncodingTypeFmt[] =
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"Software\\Microsoft\\Cryptography\\OID\\EncodingType %ld\\%s\\%s";
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UINT len;
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char numericOID[7]; /* enough for "#65535" */
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const char *oid;
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LPSTR szKey;
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/* MSDN says the encoding type is a mask, but it isn't treated that way.
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* (E.g., if dwEncodingType were 3, the key names "EncodingType 1" and
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* "EncodingType 2" would be expected if it were a mask. Instead native
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* stores values in "EncodingType 3".
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*/
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if (!HIWORD(pszOID))
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{
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snprintf(numericOID, sizeof(numericOID), "#%d", LOWORD(pszOID));
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oid = numericOID;
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}
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else
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oid = pszOID;
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/* This is enough: the lengths of the two string parameters are explicitly
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* counted, and we need up to five additional characters for the encoding
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* type. These are covered by the "%d", "%s", and "%s" characters in the
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* format specifier that are removed by sprintf.
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*/
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len = sizeof(szEncodingTypeFmt) + lstrlenA(pszFuncName) + lstrlenA(oid);
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szKey = CryptMemAlloc(len);
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if (szKey)
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sprintf(szKey, szEncodingTypeFmt, dwEncodingType, pszFuncName, oid);
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return szKey;
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}
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BOOL WINAPI CryptRegisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszDll, LPCSTR pszOverrideFuncName)
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{
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LONG r;
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HKEY hKey;
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LPSTR szKey;
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TRACE("%lx %s %s %s %s\n", dwEncodingType, pszFuncName, pszOID,
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debugstr_w(pwszDll), pszOverrideFuncName);
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/* This only registers functions for encoding certs, not messages */
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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/* Native does nothing pwszDll is NULL */
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if (!pwszDll)
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return TRUE;
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/* I'm not matching MS bug for bug here, because I doubt any app depends on
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* it:
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* - native "succeeds" if pszFuncName is NULL, but the nonsensical entry
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* it creates would never be used
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* - native returns an HRESULT rather than a Win32 error if pszOID is NULL.
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* Instead I disallow both of these with ERROR_INVALID_PARAMETER.
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*/
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if (!pszFuncName || !pszOID)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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TRACE("Key name is %s\n", debugstr_a(szKey));
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if (!szKey)
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return FALSE;
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r = RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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CryptMemFree(szKey);
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if(r != ERROR_SUCCESS)
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return FALSE;
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/* write the values */
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if (pszOverrideFuncName)
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RegSetValueExA(hKey, "FuncName", 0, REG_SZ, (const BYTE*)pszOverrideFuncName,
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lstrlenA(pszOverrideFuncName) + 1);
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RegSetValueExW(hKey, szDllName, 0, REG_SZ, (const BYTE*) pwszDll,
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(lstrlenW(pwszDll) + 1) * sizeof (WCHAR));
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RegCloseKey(hKey);
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return TRUE;
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}
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BOOL WINAPI CryptUnregisterOIDFunction(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID)
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{
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LPSTR szKey;
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LONG rc;
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TRACE("%lx %s %s\n", dwEncodingType, pszFuncName, pszOID);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegDeleteKeyA(HKEY_LOCAL_MACHINE, szKey);
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CryptMemFree(szKey);
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if (rc)
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SetLastError(rc);
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return rc ? FALSE : TRUE;
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}
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BOOL WINAPI CryptGetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszValueName, DWORD *pdwValueType, BYTE *pbValueData,
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DWORD *pcbValueData)
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{
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LPSTR szKey;
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LONG rc;
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HKEY hKey;
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TRACE("%lx %s %s %s %p %p %p\n", dwEncodingType, debugstr_a(pszFuncName),
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debugstr_a(pszOID), debugstr_w(pwszValueName), pdwValueType, pbValueData,
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pcbValueData);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID || !pwszValueName)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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CryptMemFree(szKey);
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if (rc)
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SetLastError(rc);
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else
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{
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rc = RegQueryValueExW(hKey, pwszValueName, NULL, pdwValueType,
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pbValueData, pcbValueData);
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if (rc)
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SetLastError(rc);
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RegCloseKey(hKey);
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}
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return rc ? FALSE : TRUE;
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}
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BOOL WINAPI CryptSetOIDFunctionValue(DWORD dwEncodingType, LPCSTR pszFuncName,
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LPCSTR pszOID, LPCWSTR pwszValueName, DWORD dwValueType,
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const BYTE *pbValueData, DWORD cbValueData)
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{
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LPSTR szKey;
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LONG rc;
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HKEY hKey;
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TRACE("%lx %s %s %s %ld %p %ld\n", dwEncodingType, debugstr_a(pszFuncName),
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debugstr_a(pszOID), debugstr_w(pwszValueName), dwValueType, pbValueData,
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cbValueData);
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if (!GET_CERT_ENCODING_TYPE(dwEncodingType))
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return TRUE;
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if (!pszFuncName || !pszOID || !pwszValueName)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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szKey = CRYPT_GetKeyName(dwEncodingType, pszFuncName, pszOID);
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rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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CryptMemFree(szKey);
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if (rc)
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SetLastError(rc);
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else
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{
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rc = RegSetValueExW(hKey, pwszValueName, 0, dwValueType, pbValueData,
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cbValueData);
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if (rc)
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SetLastError(rc);
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RegCloseKey(hKey);
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}
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return rc ? FALSE : TRUE;
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}
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/* Gets the registered function named szFuncName for dwCertEncodingType and
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* lpszStructType, or NULL if one could not be found. *lib will be set to the
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* handle of the module it's in, or NULL if no module was loaded. If the
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* return value is NULL, *lib will also be NULL, to simplify error handling.
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*/
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static void *CRYPT_GetFunc(DWORD dwCertEncodingType, LPCSTR lpszStructType,
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LPCSTR szFuncName, HMODULE *lib)
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{
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void *ret = NULL;
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char *szKey = CRYPT_GetKeyName(dwCertEncodingType, szFuncName,
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lpszStructType);
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const char *funcName;
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long r;
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HKEY hKey;
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DWORD type, size = 0;
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TRACE("(%08lx %s %s %p)\n", dwCertEncodingType, debugstr_a(lpszStructType),
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debugstr_a(szFuncName), lib);
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*lib = NULL;
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r = RegOpenKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey);
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CryptMemFree(szKey);
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if(r != ERROR_SUCCESS)
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return NULL;
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RegQueryValueExA(hKey, "FuncName", NULL, &type, NULL, &size);
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if (GetLastError() == ERROR_MORE_DATA && type == REG_SZ)
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{
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funcName = CryptMemAlloc(size);
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RegQueryValueExA(hKey, "FuncName", NULL, &type, (LPBYTE)funcName,
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&size);
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}
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else
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funcName = szFuncName;
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RegQueryValueExW(hKey, szDllName, NULL, &type, NULL, &size);
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if (GetLastError() == ERROR_MORE_DATA && type == REG_SZ)
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{
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LPWSTR dllName = CryptMemAlloc(size);
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|
|
RegQueryValueExW(hKey, szDllName, NULL, &type, (LPBYTE)dllName,
|
|
&size);
|
|
*lib = LoadLibraryW(dllName);
|
|
if (*lib)
|
|
{
|
|
ret = GetProcAddress(*lib, funcName);
|
|
if (!ret)
|
|
{
|
|
/* Unload the library, the caller doesn't want to unload it
|
|
* when the return value is NULL.
|
|
*/
|
|
FreeLibrary(*lib);
|
|
*lib = NULL;
|
|
}
|
|
}
|
|
CryptMemFree(dllName);
|
|
}
|
|
if (funcName != szFuncName)
|
|
CryptMemFree((char *)funcName);
|
|
TRACE("returning %p\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptEncodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const void *pvStructInfo, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib;
|
|
CryptEncodeObjectFunc pCryptEncodeObject;
|
|
|
|
TRACE("(0x%08lx, %s, %p, %p, %p)\n", dwCertEncodingType,
|
|
debugstr_a(lpszStructType), pvStructInfo, pbEncoded,
|
|
pcbEncoded);
|
|
|
|
if (!pbEncoded && !pcbEncoded)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Try registered DLL first.. */
|
|
pCryptEncodeObject =
|
|
(CryptEncodeObjectFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, CRYPT_OID_ENCODE_OBJECT_FUNC, &lib);
|
|
if (pCryptEncodeObject)
|
|
{
|
|
ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType,
|
|
pvStructInfo, pbEncoded, pcbEncoded);
|
|
FreeLibrary(lib);
|
|
}
|
|
else
|
|
{
|
|
/* If not, use CryptEncodeObjectEx */
|
|
ret = CryptEncodeObjectEx(dwCertEncodingType, lpszStructType,
|
|
pvStructInfo, 0, NULL, pbEncoded, pcbEncoded);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Helper function to check *pcbEncoded, set it to the required size, and
|
|
* optionally to allocate memory. Assumes pbEncoded is not NULL.
|
|
* If CRYPT_ENCODE_ALLOC_FLAG is set in dwFlags, *pbEncoded will be set to a
|
|
* pointer to the newly allocated memory.
|
|
*/
|
|
static BOOL CRYPT_EncodeEnsureSpace(DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded,
|
|
DWORD bytesNeeded)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
{
|
|
if (pEncodePara && pEncodePara->pfnAlloc)
|
|
*(BYTE **)pbEncoded = pEncodePara->pfnAlloc(bytesNeeded);
|
|
else
|
|
*(BYTE **)pbEncoded = LocalAlloc(0, bytesNeeded);
|
|
if (!*(BYTE **)pbEncoded)
|
|
ret = FALSE;
|
|
else
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
else if (bytesNeeded > *pcbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL CRYPT_EncodeLen(DWORD len, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD bytesNeeded, significantBytes = 0;
|
|
|
|
if (len <= 0x7f)
|
|
bytesNeeded = 1;
|
|
else
|
|
{
|
|
DWORD temp;
|
|
|
|
for (temp = len, significantBytes = sizeof(temp); !(temp & 0xff000000);
|
|
temp <<= 8, significantBytes--)
|
|
;
|
|
bytesNeeded = significantBytes + 1;
|
|
}
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
return FALSE;
|
|
}
|
|
if (len <= 0x7f)
|
|
*pbEncoded = (BYTE)len;
|
|
else
|
|
{
|
|
DWORD i;
|
|
|
|
*pbEncoded++ = significantBytes | 0x80;
|
|
for (i = 0; i < significantBytes; i++)
|
|
{
|
|
*(pbEncoded + significantBytes - i - 1) = (BYTE)(len & 0xff);
|
|
len >>= 8;
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
return TRUE;
|
|
}
|
|
|
|
struct AsnEncodeSequenceItem
|
|
{
|
|
const void *pvStructInfo;
|
|
CryptEncodeObjectExFunc encodeFunc;
|
|
DWORD size; /* used during encoding, not for your use */
|
|
};
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeSequence(DWORD dwCertEncodingType,
|
|
struct AsnEncodeSequenceItem items[], DWORD cItem, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
DWORD i, dataLen = 0;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", items, cItem, dwFlags, pEncodePara,
|
|
pbEncoded, *pcbEncoded);
|
|
for (i = 0, ret = TRUE; ret && i < cItem; i++)
|
|
{
|
|
ret = items[i].encodeFunc(dwCertEncodingType, NULL,
|
|
items[i].pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL,
|
|
NULL, &items[i].size);
|
|
dataLen += items[i].size;
|
|
}
|
|
if (ret)
|
|
{
|
|
DWORD lenBytes, bytesNeeded;
|
|
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataLen;
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCE;
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; ret && i < cItem; i++)
|
|
{
|
|
ret = items[i].encodeFunc(dwCertEncodingType, NULL,
|
|
items[i].pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG,
|
|
NULL, pbEncoded, &items[i].size);
|
|
pbEncoded += items[i].size;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
struct AsnConstructedItem
|
|
{
|
|
BYTE tag;
|
|
const void *pvStructInfo;
|
|
CryptEncodeObjectExFunc encodeFunc;
|
|
};
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeConstructed(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
const struct AsnConstructedItem *item =
|
|
(const struct AsnConstructedItem *)pvStructInfo;
|
|
DWORD len;
|
|
|
|
if ((ret = item->encodeFunc(dwCertEncodingType, lpszStructType,
|
|
item->pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &len)))
|
|
{
|
|
DWORD dataLen, bytesNeeded;
|
|
|
|
CRYPT_EncodeLen(len, NULL, &dataLen);
|
|
bytesNeeded = 1 + dataLen + len;
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara,
|
|
pbEncoded, pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_CONTEXT | ASN_CONSTRUCTOR | item->tag;
|
|
CRYPT_EncodeLen(len, pbEncoded, &dataLen);
|
|
pbEncoded += dataLen;
|
|
ret = item->encodeFunc(dwCertEncodingType, lpszStructType,
|
|
item->pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL,
|
|
pbEncoded, &len);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeCertVersion(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
const DWORD *ver = (const DWORD *)pvStructInfo;
|
|
BOOL ret;
|
|
|
|
/* CERT_V1 is not encoded */
|
|
if (*ver == CERT_V1)
|
|
{
|
|
*pcbEncoded = 0;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
struct AsnConstructedItem item = { 0, ver, CRYPT_AsnEncodeInt };
|
|
|
|
ret = CRYPT_AsnEncodeConstructed(dwCertEncodingType, X509_INTEGER,
|
|
&item, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_CopyEncodedBlob(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
const CRYPT_DER_BLOB *blob = (const CRYPT_DER_BLOB *)pvStructInfo;
|
|
BOOL ret;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = blob->cbData;
|
|
ret = TRUE;
|
|
}
|
|
else if (*pcbEncoded < blob->cbData)
|
|
{
|
|
*pcbEncoded = blob->cbData;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
if (blob->cbData)
|
|
memcpy(pbEncoded, blob->pbData, blob->cbData);
|
|
*pcbEncoded = blob->cbData;
|
|
ret = TRUE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeValidity(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
/* This has two filetimes in a row, a NotBefore and a NotAfter */
|
|
const FILETIME *timePtr = (const FILETIME *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[] = {
|
|
{ timePtr++, CRYPT_AsnEncodeChoiceOfTime, 0 },
|
|
{ timePtr, CRYPT_AsnEncodeChoiceOfTime, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeAlgorithmId(
|
|
DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo,
|
|
DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded,
|
|
DWORD *pcbEncoded)
|
|
{
|
|
const CRYPT_ALGORITHM_IDENTIFIER *algo =
|
|
(const CRYPT_ALGORITHM_IDENTIFIER *)pvStructInfo;
|
|
BOOL ret;
|
|
struct AsnEncodeSequenceItem items[] = {
|
|
{ algo->pszObjId, CRYPT_AsnEncodeOid, 0 },
|
|
{ &algo->Parameters, CRYPT_CopyEncodedBlob, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodePubKeyInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_PUBLIC_KEY_INFO *info =
|
|
(const CERT_PUBLIC_KEY_INFO *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[] = {
|
|
{ &info->Algorithm, CRYPT_AsnEncodeAlgorithmId, 0 },
|
|
{ &info->PublicKey, CRYPT_AsnEncodeBits, 0 },
|
|
};
|
|
|
|
TRACE("Encoding public key with OID %s\n",
|
|
debugstr_a(info->Algorithm.pszObjId));
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeCert(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_SIGNED_CONTENT_INFO *info =
|
|
(const CERT_SIGNED_CONTENT_INFO *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[] = {
|
|
{ &info->ToBeSigned, CRYPT_CopyEncodedBlob, 0 },
|
|
{ &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 },
|
|
{ &info->Signature, CRYPT_AsnEncodeBitsSwapBytes, 0 },
|
|
};
|
|
|
|
if (dwFlags & CRYPT_ENCODE_NO_SIGNATURE_BYTE_REVERSAL_FLAG)
|
|
items[2].encodeFunc = CRYPT_AsnEncodeBits;
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
/* Like in Windows, this blithely ignores the validity of the passed-in
|
|
* CERT_INFO, and just encodes it as-is. The resulting encoded data may not
|
|
* decode properly, see CRYPT_AsnDecodeCertInfo.
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnEncodeCertInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_INFO *info = (const CERT_INFO *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[10] = {
|
|
{ &info->dwVersion, CRYPT_AsnEncodeCertVersion, 0 },
|
|
{ &info->SerialNumber, CRYPT_AsnEncodeInteger, 0 },
|
|
{ &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 },
|
|
{ &info->Issuer, CRYPT_CopyEncodedBlob, 0 },
|
|
{ &info->NotBefore, CRYPT_AsnEncodeValidity, 0 },
|
|
{ &info->Subject, CRYPT_CopyEncodedBlob, 0 },
|
|
{ &info->SubjectPublicKeyInfo, CRYPT_AsnEncodePubKeyInfo, 0 },
|
|
{ 0 }
|
|
};
|
|
struct AsnConstructedItem constructed[3] = { { 0 } };
|
|
DWORD cItem = 7, cConstructed = 0;
|
|
|
|
if (info->IssuerUniqueId.cbData)
|
|
{
|
|
constructed[cConstructed].tag = 1;
|
|
constructed[cConstructed].pvStructInfo = &info->IssuerUniqueId;
|
|
constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeBits;
|
|
items[cItem].pvStructInfo = &constructed[cConstructed];
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed;
|
|
cConstructed++;
|
|
cItem++;
|
|
}
|
|
if (info->SubjectUniqueId.cbData)
|
|
{
|
|
constructed[cConstructed].tag = 2;
|
|
constructed[cConstructed].pvStructInfo = &info->SubjectUniqueId;
|
|
constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeBits;
|
|
items[cItem].pvStructInfo = &constructed[cConstructed];
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed;
|
|
cConstructed++;
|
|
cItem++;
|
|
}
|
|
if (info->cExtension)
|
|
{
|
|
constructed[cConstructed].tag = 3;
|
|
constructed[cConstructed].pvStructInfo = &info->cExtension;
|
|
constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeExtensions;
|
|
items[cItem].pvStructInfo = &constructed[cConstructed];
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed;
|
|
cConstructed++;
|
|
cItem++;
|
|
}
|
|
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem,
|
|
dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeCRLEntry(const CRL_ENTRY *entry,
|
|
BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
struct AsnEncodeSequenceItem items[3] = {
|
|
{ &entry->SerialNumber, CRYPT_AsnEncodeInteger, 0 },
|
|
{ &entry->RevocationDate, CRYPT_AsnEncodeChoiceOfTime, 0 },
|
|
{ 0 }
|
|
};
|
|
DWORD cItem = 2;
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %p, %p\n", entry, pbEncoded, pcbEncoded);
|
|
|
|
if (entry->cExtension)
|
|
{
|
|
items[cItem].pvStructInfo = &entry->cExtension;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeExtensions;
|
|
cItem++;
|
|
}
|
|
|
|
ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, 0, NULL,
|
|
pbEncoded, pcbEncoded);
|
|
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeCRLEntries(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD cCRLEntry = *(const DWORD *)pvStructInfo;
|
|
DWORD bytesNeeded, dataLen, lenBytes, i;
|
|
const CRL_ENTRY *rgCRLEntry = *(const CRL_ENTRY **)
|
|
((const BYTE *)pvStructInfo + sizeof(DWORD));
|
|
BOOL ret = TRUE;
|
|
|
|
for (i = 0, dataLen = 0; ret && i < cCRLEntry; i++)
|
|
{
|
|
DWORD size;
|
|
|
|
ret = CRYPT_AsnEncodeCRLEntry(&rgCRLEntry[i], NULL, &size);
|
|
if (ret)
|
|
dataLen += size;
|
|
}
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataLen;
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; i < cCRLEntry; i++)
|
|
{
|
|
DWORD size = dataLen;
|
|
|
|
ret = CRYPT_AsnEncodeCRLEntry(&rgCRLEntry[i], pbEncoded, &size);
|
|
pbEncoded += size;
|
|
dataLen -= size;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeCRLVersion(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
const DWORD *ver = (const DWORD *)pvStructInfo;
|
|
BOOL ret;
|
|
|
|
/* CRL_V1 is not encoded */
|
|
if (*ver == CRL_V1)
|
|
{
|
|
*pcbEncoded = 0;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
ret = CRYPT_AsnEncodeInt(dwCertEncodingType, X509_INTEGER, ver,
|
|
dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
return ret;
|
|
}
|
|
|
|
/* Like in Windows, this blithely ignores the validity of the passed-in
|
|
* CRL_INFO, and just encodes it as-is. The resulting encoded data may not
|
|
* decode properly, see CRYPT_AsnDecodeCRLInfo.
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnEncodeCRLInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CRL_INFO *info = (const CRL_INFO *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[7] = {
|
|
{ &info->dwVersion, CRYPT_AsnEncodeCRLVersion, 0 },
|
|
{ &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 },
|
|
{ &info->Issuer, CRYPT_CopyEncodedBlob, 0 },
|
|
{ &info->ThisUpdate, CRYPT_AsnEncodeChoiceOfTime, 0 },
|
|
{ 0 }
|
|
};
|
|
DWORD cItem = 4;
|
|
|
|
if (info->NextUpdate.dwLowDateTime || info->NextUpdate.dwHighDateTime)
|
|
{
|
|
items[cItem].pvStructInfo = &info->NextUpdate;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeChoiceOfTime;
|
|
cItem++;
|
|
}
|
|
if (info->cCRLEntry)
|
|
{
|
|
items[cItem].pvStructInfo = &info->cCRLEntry;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeCRLEntries;
|
|
cItem++;
|
|
}
|
|
if (info->cExtension)
|
|
{
|
|
items[cItem].pvStructInfo = &info->cExtension;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeExtensions;
|
|
cItem++;
|
|
}
|
|
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem,
|
|
dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL CRYPT_AsnEncodeExtension(CERT_EXTENSION *ext, BYTE *pbEncoded,
|
|
DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
struct AsnEncodeSequenceItem items[3] = {
|
|
{ ext->pszObjId, CRYPT_AsnEncodeOid, 0 },
|
|
{ NULL, NULL, 0 },
|
|
{ NULL, NULL, 0 },
|
|
};
|
|
DWORD cItem = 1;
|
|
|
|
TRACE("%p, %p, %ld\n", ext, pbEncoded, *pcbEncoded);
|
|
|
|
if (ext->fCritical)
|
|
{
|
|
items[cItem].pvStructInfo = &ext->fCritical;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeBool;
|
|
cItem++;
|
|
}
|
|
items[cItem].pvStructInfo = &ext->Value;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeOctets;
|
|
cItem++;
|
|
|
|
ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, 0, NULL,
|
|
pbEncoded, pcbEncoded);
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeExtensions(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded, dataLen, lenBytes, i;
|
|
const CERT_EXTENSIONS *exts = (const CERT_EXTENSIONS *)pvStructInfo;
|
|
|
|
ret = TRUE;
|
|
for (i = 0, dataLen = 0; ret && i < exts->cExtension; i++)
|
|
{
|
|
DWORD size;
|
|
|
|
ret = CRYPT_AsnEncodeExtension(&exts->rgExtension[i], NULL, &size);
|
|
if (ret)
|
|
dataLen += size;
|
|
}
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataLen;
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; i < exts->cExtension; i++)
|
|
{
|
|
DWORD size = dataLen;
|
|
|
|
ret = CRYPT_AsnEncodeExtension(&exts->rgExtension[i],
|
|
pbEncoded, &size);
|
|
pbEncoded += size;
|
|
dataLen -= size;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeOid(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
LPCSTR pszObjId = (LPCSTR)pvStructInfo;
|
|
DWORD bytesNeeded = 0, lenBytes;
|
|
BOOL ret = TRUE;
|
|
int firstPos = 0;
|
|
BYTE firstByte = 0;
|
|
|
|
TRACE("%s\n", debugstr_a(pszObjId));
|
|
|
|
if (pszObjId)
|
|
{
|
|
const char *ptr;
|
|
int val1, val2;
|
|
|
|
if (sscanf(pszObjId, "%d.%d.%n", &val1, &val2, &firstPos) != 2)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_ERROR);
|
|
return FALSE;
|
|
}
|
|
bytesNeeded++;
|
|
firstByte = val1 * 40 + val2;
|
|
ptr = pszObjId + firstPos;
|
|
while (ret && *ptr)
|
|
{
|
|
int pos;
|
|
|
|
/* note I assume each component is at most 32-bits long in base 2 */
|
|
if (sscanf(ptr, "%d%n", &val1, &pos) == 1)
|
|
{
|
|
if (val1 >= 0x10000000)
|
|
bytesNeeded += 5;
|
|
else if (val1 >= 0x200000)
|
|
bytesNeeded += 4;
|
|
else if (val1 >= 0x4000)
|
|
bytesNeeded += 3;
|
|
else if (val1 >= 0x80)
|
|
bytesNeeded += 2;
|
|
else
|
|
bytesNeeded += 1;
|
|
ptr += pos;
|
|
if (*ptr == '.')
|
|
ptr++;
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_ERROR);
|
|
return FALSE;
|
|
}
|
|
}
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
}
|
|
else
|
|
lenBytes = 1;
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = ASN_OBJECTIDENTIFIER;
|
|
CRYPT_EncodeLen(bytesNeeded - 1 - lenBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
if (pszObjId)
|
|
{
|
|
const char *ptr;
|
|
int val, pos;
|
|
|
|
*pbEncoded++ = firstByte;
|
|
ptr = pszObjId + firstPos;
|
|
while (ret && *ptr)
|
|
{
|
|
sscanf(ptr, "%d%n", &val, &pos);
|
|
{
|
|
unsigned char outBytes[5];
|
|
int numBytes, i;
|
|
|
|
if (val >= 0x10000000)
|
|
numBytes = 5;
|
|
else if (val >= 0x200000)
|
|
numBytes = 4;
|
|
else if (val >= 0x4000)
|
|
numBytes = 3;
|
|
else if (val >= 0x80)
|
|
numBytes = 2;
|
|
else
|
|
numBytes = 1;
|
|
for (i = numBytes; i > 0; i--)
|
|
{
|
|
outBytes[i - 1] = val & 0x7f;
|
|
val >>= 7;
|
|
}
|
|
for (i = 0; i < numBytes - 1; i++)
|
|
*pbEncoded++ = outBytes[i] | 0x80;
|
|
*pbEncoded++ = outBytes[i];
|
|
ptr += pos;
|
|
if (*ptr == '.')
|
|
ptr++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeNameValue(DWORD dwCertEncodingType,
|
|
CERT_NAME_VALUE *value, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BYTE tag;
|
|
DWORD bytesNeeded, lenBytes, encodedLen;
|
|
BOOL ret = TRUE;
|
|
|
|
switch (value->dwValueType)
|
|
{
|
|
case CERT_RDN_NUMERIC_STRING:
|
|
tag = ASN_NUMERICSTRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_PRINTABLE_STRING:
|
|
tag = ASN_PRINTABLESTRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_IA5_STRING:
|
|
tag = ASN_IA5STRING;
|
|
encodedLen = value->Value.cbData;
|
|
break;
|
|
case CERT_RDN_ANY_TYPE:
|
|
/* explicitly disallowed */
|
|
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
|
|
return FALSE;
|
|
default:
|
|
FIXME("String type %ld unimplemented\n", value->dwValueType);
|
|
return FALSE;
|
|
}
|
|
CRYPT_EncodeLen(encodedLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + encodedLen;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = tag;
|
|
CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
switch (value->dwValueType)
|
|
{
|
|
case CERT_RDN_NUMERIC_STRING:
|
|
case CERT_RDN_PRINTABLE_STRING:
|
|
case CERT_RDN_IA5_STRING:
|
|
memcpy(pbEncoded, value->Value.pbData, value->Value.cbData);
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeRdnAttr(DWORD dwCertEncodingType,
|
|
CERT_RDN_ATTR *attr, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
DWORD bytesNeeded = 0, lenBytes, size;
|
|
BOOL ret;
|
|
|
|
ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL, attr->pszObjId,
|
|
0, NULL, NULL, &size);
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
/* hack: a CERT_RDN_ATTR is identical to a CERT_NAME_VALUE beginning
|
|
* with dwValueType, so "cast" it to get its encoded size
|
|
*/
|
|
ret = CRYPT_AsnEncodeNameValue(dwCertEncodingType,
|
|
(CERT_NAME_VALUE *)&attr->dwValueType, NULL, &size);
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SEQUENCE;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
|
|
&lenBytes);
|
|
pbEncoded += lenBytes;
|
|
size = bytesNeeded - 1 - lenBytes;
|
|
ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL,
|
|
attr->pszObjId, 0, NULL, pbEncoded, &size);
|
|
if (ret)
|
|
{
|
|
pbEncoded += size;
|
|
size = bytesNeeded - 1 - lenBytes - size;
|
|
ret = CRYPT_AsnEncodeNameValue(dwCertEncodingType,
|
|
(CERT_NAME_VALUE *)&attr->dwValueType, pbEncoded,
|
|
&size);
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int BLOBComp(const void *l, const void *r)
|
|
{
|
|
CRYPT_DER_BLOB *a = (CRYPT_DER_BLOB *)l, *b = (CRYPT_DER_BLOB *)r;
|
|
int ret;
|
|
|
|
if (!(ret = memcmp(a->pbData, b->pbData, min(a->cbData, b->cbData))))
|
|
ret = a->cbData - b->cbData;
|
|
return ret;
|
|
}
|
|
|
|
/* This encodes as a SET OF, which in DER must be lexicographically sorted.
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, CERT_RDN *rdn,
|
|
BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
CRYPT_DER_BLOB *blobs = NULL;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded = 0, lenBytes, i;
|
|
|
|
blobs = NULL;
|
|
ret = TRUE;
|
|
if (rdn->cRDNAttr)
|
|
{
|
|
blobs = CryptMemAlloc(rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB));
|
|
if (!blobs)
|
|
ret = FALSE;
|
|
else
|
|
memset(blobs, 0, rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB));
|
|
}
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType, &rdn->rgRDNAttr[i],
|
|
NULL, &blobs[i].cbData);
|
|
if (ret)
|
|
bytesNeeded += blobs[i].cbData;
|
|
}
|
|
if (ret)
|
|
{
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (pbEncoded)
|
|
{
|
|
if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
blobs[i].pbData = CryptMemAlloc(blobs[i].cbData);
|
|
if (!blobs[i].pbData)
|
|
ret = FALSE;
|
|
else
|
|
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType,
|
|
&rdn->rgRDNAttr[i], blobs[i].pbData,
|
|
&blobs[i].cbData);
|
|
}
|
|
if (ret)
|
|
{
|
|
qsort(blobs, rdn->cRDNAttr, sizeof(CRYPT_DER_BLOB),
|
|
BLOBComp);
|
|
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SETOF;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
|
|
&lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; ret && i < rdn->cRDNAttr; i++)
|
|
{
|
|
memcpy(pbEncoded, blobs[i].pbData, blobs[i].cbData);
|
|
pbEncoded += blobs[i].cbData;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
if (blobs)
|
|
{
|
|
for (i = 0; i < rdn->cRDNAttr; i++)
|
|
CryptMemFree(blobs[i].pbData);
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
return FALSE;
|
|
}
|
|
__ENDTRY
|
|
CryptMemFree(blobs);
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_NAME_INFO *info = (const CERT_NAME_INFO *)pvStructInfo;
|
|
DWORD bytesNeeded = 0, lenBytes, size, i;
|
|
|
|
TRACE("encoding name with %ld RDNs\n", info->cRDN);
|
|
ret = TRUE;
|
|
for (i = 0; ret && i < info->cRDN; i++)
|
|
{
|
|
ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], NULL,
|
|
&size);
|
|
if (ret)
|
|
bytesNeeded += size;
|
|
}
|
|
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
|
|
bytesNeeded += 1 + lenBytes;
|
|
if (ret)
|
|
{
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara,
|
|
pbEncoded, pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
|
|
&lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; ret && i < info->cRDN; i++)
|
|
{
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnEncodeRdn(dwCertEncodingType,
|
|
&info->rgRDN[i], pbEncoded, &size);
|
|
if (ret)
|
|
{
|
|
pbEncoded += size;
|
|
bytesNeeded -= size;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeBool(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL val = *(const BOOL *)pvStructInfo, ret;
|
|
|
|
TRACE("%d\n", val);
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = 3;
|
|
ret = TRUE;
|
|
}
|
|
else if (*pcbEncoded < 3)
|
|
{
|
|
*pcbEncoded = 3;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pcbEncoded = 3;
|
|
*pbEncoded++ = ASN_BOOL;
|
|
*pbEncoded++ = 1;
|
|
*pbEncoded++ = val ? 0xff : 0;
|
|
ret = TRUE;
|
|
}
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL CRYPT_AsnEncodeAltNameEntry(const CERT_ALT_NAME_ENTRY *entry,
|
|
BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
DWORD dataLen;
|
|
|
|
ret = TRUE;
|
|
switch (entry->dwAltNameChoice)
|
|
{
|
|
case CERT_ALT_NAME_RFC822_NAME:
|
|
case CERT_ALT_NAME_DNS_NAME:
|
|
case CERT_ALT_NAME_URL:
|
|
if (entry->u.pwszURL)
|
|
{
|
|
DWORD i;
|
|
|
|
/* Not + 1: don't encode the NULL-terminator */
|
|
dataLen = lstrlenW(entry->u.pwszURL);
|
|
for (i = 0; ret && i < dataLen; i++)
|
|
{
|
|
if (entry->u.pwszURL[i] > 0x7f)
|
|
{
|
|
SetLastError(CRYPT_E_INVALID_IA5_STRING);
|
|
ret = FALSE;
|
|
*pcbEncoded = i;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
dataLen = 0;
|
|
break;
|
|
case CERT_ALT_NAME_IP_ADDRESS:
|
|
dataLen = entry->u.IPAddress.cbData;
|
|
break;
|
|
case CERT_ALT_NAME_REGISTERED_ID:
|
|
/* FIXME: encode OID */
|
|
case CERT_ALT_NAME_OTHER_NAME:
|
|
case CERT_ALT_NAME_DIRECTORY_NAME:
|
|
FIXME("name type %ld unimplemented\n", entry->dwAltNameChoice);
|
|
return FALSE;
|
|
default:
|
|
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
|
|
return FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
DWORD bytesNeeded, lenBytes;
|
|
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + dataLen + lenBytes;
|
|
if (!pbEncoded)
|
|
*pcbEncoded = bytesNeeded;
|
|
else if (*pcbEncoded < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pbEncoded++ = ASN_CONTEXT | (entry->dwAltNameChoice - 1);
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
switch (entry->dwAltNameChoice)
|
|
{
|
|
case CERT_ALT_NAME_RFC822_NAME:
|
|
case CERT_ALT_NAME_DNS_NAME:
|
|
case CERT_ALT_NAME_URL:
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < dataLen; i++)
|
|
*pbEncoded++ = (BYTE)entry->u.pwszURL[i];
|
|
break;
|
|
}
|
|
case CERT_ALT_NAME_IP_ADDRESS:
|
|
memcpy(pbEncoded, entry->u.IPAddress.pbData, dataLen);
|
|
break;
|
|
}
|
|
if (ret)
|
|
*pcbEncoded = bytesNeeded;
|
|
}
|
|
}
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeAltName(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_ALT_NAME_INFO *info =
|
|
(const CERT_ALT_NAME_INFO *)pvStructInfo;
|
|
|
|
DWORD bytesNeeded, dataLen, lenBytes, i;
|
|
|
|
ret = TRUE;
|
|
/* FIXME: should check that cAltEntry is not bigger than 0xff, since we
|
|
* can't encode an erroneous entry index if it's bigger than this.
|
|
*/
|
|
for (i = 0, dataLen = 0; ret && i < info->cAltEntry; i++)
|
|
{
|
|
DWORD len;
|
|
|
|
ret = CRYPT_AsnEncodeAltNameEntry(&info->rgAltEntry[i], NULL,
|
|
&len);
|
|
if (ret)
|
|
dataLen += len;
|
|
else if (GetLastError() == CRYPT_E_INVALID_IA5_STRING)
|
|
{
|
|
/* CRYPT_AsnEncodeAltNameEntry encoded the index of
|
|
* the bad character, now set the index of the bad
|
|
* entry
|
|
*/
|
|
*pcbEncoded = (BYTE)i <<
|
|
CERT_ALT_NAME_ENTRY_ERR_INDEX_SHIFT | len;
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataLen;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara,
|
|
pbEncoded, pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; ret && i < info->cAltEntry; i++)
|
|
{
|
|
DWORD len = dataLen;
|
|
|
|
ret = CRYPT_AsnEncodeAltNameEntry(&info->rgAltEntry[i],
|
|
pbEncoded, &len);
|
|
if (ret)
|
|
{
|
|
pbEncoded += len;
|
|
dataLen -= len;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeBasicConstraints2(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CERT_BASIC_CONSTRAINTS2_INFO *info =
|
|
(const CERT_BASIC_CONSTRAINTS2_INFO *)pvStructInfo;
|
|
struct AsnEncodeSequenceItem items[2] = { { 0 } };
|
|
DWORD cItem = 0;
|
|
|
|
if (info->fCA)
|
|
{
|
|
items[cItem].pvStructInfo = &info->fCA;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeBool;
|
|
cItem++;
|
|
}
|
|
if (info->fPathLenConstraint)
|
|
{
|
|
items[cItem].pvStructInfo = &info->dwPathLenConstraint;
|
|
items[cItem].encodeFunc = CRYPT_AsnEncodeInt;
|
|
cItem++;
|
|
}
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem,
|
|
dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeRsaPubKey(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const BLOBHEADER *hdr =
|
|
(const BLOBHEADER *)pvStructInfo;
|
|
|
|
if (hdr->bType != PUBLICKEYBLOB)
|
|
{
|
|
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
const RSAPUBKEY *rsaPubKey = (const RSAPUBKEY *)
|
|
((const BYTE *)pvStructInfo + sizeof(BLOBHEADER));
|
|
CRYPT_INTEGER_BLOB blob = { rsaPubKey->bitlen / 8,
|
|
(BYTE *)pvStructInfo + sizeof(BLOBHEADER) + sizeof(RSAPUBKEY) };
|
|
struct AsnEncodeSequenceItem items[] = {
|
|
{ &blob, CRYPT_AsnEncodeUnsignedInteger, 0 },
|
|
{ &rsaPubKey->pubexp, CRYPT_AsnEncodeInt, 0 },
|
|
};
|
|
|
|
ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items,
|
|
sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeOctets(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CRYPT_DATA_BLOB *blob = (const CRYPT_DATA_BLOB *)pvStructInfo;
|
|
DWORD bytesNeeded, lenBytes;
|
|
|
|
TRACE("(%ld, %p), %08lx, %p, %p, %ld\n", blob->cbData, blob->pbData,
|
|
dwFlags, pEncodePara, pbEncoded, *pcbEncoded);
|
|
|
|
CRYPT_EncodeLen(blob->cbData, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + blob->cbData;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_OCTETSTRING;
|
|
CRYPT_EncodeLen(blob->cbData, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
if (blob->cbData)
|
|
memcpy(pbEncoded, blob->pbData, blob->cbData);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeBits(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CRYPT_BIT_BLOB *blob = (const CRYPT_BIT_BLOB *)pvStructInfo;
|
|
DWORD bytesNeeded, lenBytes, dataBytes;
|
|
BYTE unusedBits;
|
|
|
|
/* yep, MS allows cUnusedBits to be >= 8 */
|
|
if (!blob->cUnusedBits)
|
|
{
|
|
dataBytes = blob->cbData;
|
|
unusedBits = 0;
|
|
}
|
|
else if (blob->cbData * 8 > blob->cUnusedBits)
|
|
{
|
|
dataBytes = (blob->cbData * 8 - blob->cUnusedBits) / 8 + 1;
|
|
unusedBits = blob->cUnusedBits >= 8 ? blob->cUnusedBits / 8 :
|
|
blob->cUnusedBits;
|
|
}
|
|
else
|
|
{
|
|
dataBytes = 0;
|
|
unusedBits = 0;
|
|
}
|
|
CRYPT_EncodeLen(dataBytes + 1, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataBytes + 1;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_BITSTRING;
|
|
CRYPT_EncodeLen(dataBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = unusedBits;
|
|
if (dataBytes)
|
|
{
|
|
BYTE mask = 0xff << unusedBits;
|
|
|
|
if (dataBytes > 1)
|
|
{
|
|
memcpy(pbEncoded, blob->pbData, dataBytes - 1);
|
|
pbEncoded += dataBytes - 1;
|
|
}
|
|
*pbEncoded = *(blob->pbData + dataBytes - 1) & mask;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeBitsSwapBytes(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
const CRYPT_BIT_BLOB *blob = (const CRYPT_BIT_BLOB *)pvStructInfo;
|
|
CRYPT_BIT_BLOB newBlob = { blob->cbData, NULL, blob->cUnusedBits };
|
|
|
|
ret = TRUE;
|
|
if (newBlob.cbData)
|
|
{
|
|
newBlob.pbData = CryptMemAlloc(newBlob.cbData);
|
|
if (newBlob.pbData)
|
|
{
|
|
DWORD i;
|
|
|
|
for (i = 0; i < newBlob.cbData; i++)
|
|
newBlob.pbData[newBlob.cbData - i - 1] = blob->pbData[i];
|
|
}
|
|
else
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
ret = CRYPT_AsnEncodeBits(dwCertEncodingType, lpszStructType,
|
|
&newBlob, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
CryptMemFree(newBlob.pbData);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeInt(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CRYPT_INTEGER_BLOB blob = { sizeof(INT), (BYTE *)pvStructInfo };
|
|
|
|
return CRYPT_AsnEncodeInteger(dwCertEncodingType, X509_MULTI_BYTE_INTEGER,
|
|
&blob, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD significantBytes, lenBytes;
|
|
BYTE padByte = 0, bytesNeeded;
|
|
BOOL pad = FALSE;
|
|
const CRYPT_INTEGER_BLOB *blob =
|
|
(const CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
significantBytes = blob->cbData;
|
|
if (significantBytes)
|
|
{
|
|
if (blob->pbData[significantBytes - 1] & 0x80)
|
|
{
|
|
/* negative, lop off leading (little-endian) 0xffs */
|
|
for (; significantBytes > 0 &&
|
|
blob->pbData[significantBytes - 1] == 0xff; significantBytes--)
|
|
;
|
|
if (blob->pbData[significantBytes - 1] < 0x80)
|
|
{
|
|
padByte = 0xff;
|
|
pad = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* positive, lop off leading (little-endian) zeroes */
|
|
for (; significantBytes > 0 &&
|
|
!blob->pbData[significantBytes - 1]; significantBytes--)
|
|
;
|
|
if (significantBytes == 0)
|
|
significantBytes = 1;
|
|
if (blob->pbData[significantBytes - 1] > 0x7f)
|
|
{
|
|
padByte = 0;
|
|
pad = TRUE;
|
|
}
|
|
}
|
|
}
|
|
if (pad)
|
|
CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes);
|
|
else
|
|
CRYPT_EncodeLen(significantBytes, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + significantBytes;
|
|
if (pad)
|
|
bytesNeeded++;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_INTEGER;
|
|
if (pad)
|
|
{
|
|
CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = padByte;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
}
|
|
for (; significantBytes > 0; significantBytes--)
|
|
*(pbEncoded++) = blob->pbData[significantBytes - 1];
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeUnsignedInteger(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD significantBytes, lenBytes;
|
|
BYTE bytesNeeded;
|
|
BOOL pad = FALSE;
|
|
const CRYPT_INTEGER_BLOB *blob =
|
|
(const CRYPT_INTEGER_BLOB *)pvStructInfo;
|
|
|
|
significantBytes = blob->cbData;
|
|
if (significantBytes)
|
|
{
|
|
/* positive, lop off leading (little-endian) zeroes */
|
|
for (; significantBytes > 0 && !blob->pbData[significantBytes - 1];
|
|
significantBytes--)
|
|
;
|
|
if (significantBytes == 0)
|
|
significantBytes = 1;
|
|
if (blob->pbData[significantBytes - 1] > 0x7f)
|
|
pad = TRUE;
|
|
}
|
|
if (pad)
|
|
CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes);
|
|
else
|
|
CRYPT_EncodeLen(significantBytes, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + significantBytes;
|
|
if (pad)
|
|
bytesNeeded++;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_INTEGER;
|
|
if (pad)
|
|
{
|
|
CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
*pbEncoded++ = 0;
|
|
}
|
|
else
|
|
{
|
|
CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
}
|
|
for (; significantBytes > 0; significantBytes--)
|
|
*(pbEncoded++) = blob->pbData[significantBytes - 1];
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeEnumerated(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
CRYPT_INTEGER_BLOB blob;
|
|
BOOL ret;
|
|
|
|
/* Encode as an unsigned integer, then change the tag to enumerated */
|
|
blob.cbData = sizeof(DWORD);
|
|
blob.pbData = (BYTE *)pvStructInfo;
|
|
ret = CRYPT_AsnEncodeUnsignedInteger(dwCertEncodingType,
|
|
X509_MULTI_BYTE_UINT, &blob, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
if (ret && pbEncoded)
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
pbEncoded[0] = ASN_ENUMERATED;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeUtcTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
/* sorry, magic number: enough for tag, len, YYMMDDHHMMSSZ\0. I use a
|
|
* temporary buffer because the output buffer is not NULL-terminated.
|
|
*/
|
|
char buf[16];
|
|
static const DWORD bytesNeeded = sizeof(buf) - 1;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* Sanity check the year, this is a two-digit year format */
|
|
ret = FileTimeToSystemTime((const FILETIME *)pvStructInfo,
|
|
&sysTime);
|
|
if (ret && (sysTime.wYear < 1950 || sysTime.wYear > 2050))
|
|
{
|
|
SetLastError(CRYPT_E_BAD_ENCODE);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara,
|
|
pbEncoded, pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
buf[0] = ASN_UTCTIME;
|
|
buf[1] = bytesNeeded - 2;
|
|
snprintf(buf + 2, sizeof(buf) - 2,
|
|
"%02d%02d%02d%02d%02d%02dZ", sysTime.wYear >= 2000 ?
|
|
sysTime.wYear - 2000 : sysTime.wYear - 1900,
|
|
sysTime.wDay, sysTime.wMonth, sysTime.wHour,
|
|
sysTime.wMinute, sysTime.wSecond);
|
|
memcpy(pbEncoded, buf, bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeGeneralizedTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
/* sorry, magic number: enough for tag, len, YYYYMMDDHHMMSSZ\0. I use a
|
|
* temporary buffer because the output buffer is not NULL-terminated.
|
|
*/
|
|
char buf[18];
|
|
static const DWORD bytesNeeded = sizeof(buf) - 1;
|
|
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
ret = FileTimeToSystemTime((const FILETIME *)pvStructInfo,
|
|
&sysTime);
|
|
if (ret)
|
|
ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded);
|
|
if (ret)
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
buf[0] = ASN_GENERALTIME;
|
|
buf[1] = bytesNeeded - 2;
|
|
snprintf(buf + 2, sizeof(buf) - 2, "%04d%02d%02d%02d%02d%02dZ",
|
|
sysTime.wYear, sysTime.wDay, sysTime.wMonth, sysTime.wHour,
|
|
sysTime.wMinute, sysTime.wSecond);
|
|
memcpy(pbEncoded, buf, bytesNeeded);
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeChoiceOfTime(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
SYSTEMTIME sysTime;
|
|
|
|
/* Check the year, if it's in the UTCTime range call that encode func */
|
|
if (!FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime))
|
|
return FALSE;
|
|
if (sysTime.wYear >= 1950 && sysTime.wYear <= 2050)
|
|
ret = CRYPT_AsnEncodeUtcTime(dwCertEncodingType, lpszStructType,
|
|
pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
|
|
else
|
|
ret = CRYPT_AsnEncodeGeneralizedTime(dwCertEncodingType,
|
|
lpszStructType, pvStructInfo, dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded);
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnEncodeSequenceOfAny(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
|
|
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded, dataLen, lenBytes, i;
|
|
const CRYPT_SEQUENCE_OF_ANY *seq =
|
|
(const CRYPT_SEQUENCE_OF_ANY *)pvStructInfo;
|
|
|
|
for (i = 0, dataLen = 0; i < seq->cValue; i++)
|
|
dataLen += seq->rgValue[i].cbData;
|
|
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
|
|
bytesNeeded = 1 + lenBytes + dataLen;
|
|
if (!pbEncoded)
|
|
{
|
|
*pcbEncoded = bytesNeeded;
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
|
|
pcbEncoded, bytesNeeded)))
|
|
{
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
|
|
pbEncoded = *(BYTE **)pbEncoded;
|
|
*pbEncoded++ = ASN_SEQUENCEOF;
|
|
CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes);
|
|
pbEncoded += lenBytes;
|
|
for (i = 0; i < seq->cValue; i++)
|
|
{
|
|
memcpy(pbEncoded, seq->rgValue[i].pbData,
|
|
seq->rgValue[i].cbData);
|
|
pbEncoded += seq->rgValue[i].cbData;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptEncodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara,
|
|
void *pvEncoded, DWORD *pcbEncoded)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib = NULL;
|
|
CryptEncodeObjectExFunc encodeFunc = NULL;
|
|
|
|
TRACE("(0x%08lx, %s, %p, 0x%08lx, %p, %p, %p)\n", dwCertEncodingType,
|
|
debugstr_a(lpszStructType), pvStructInfo, dwFlags, pEncodePara,
|
|
pvEncoded, pcbEncoded);
|
|
|
|
if (!pvEncoded && !pcbEncoded)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING
|
|
&& (dwCertEncodingType & CMSG_ENCODING_TYPE_MASK) != PKCS_7_ASN_ENCODING)
|
|
{
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
return FALSE;
|
|
}
|
|
|
|
SetLastError(NOERROR);
|
|
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG && pvEncoded)
|
|
*(BYTE **)pvEncoded = NULL;
|
|
if (!HIWORD(lpszStructType))
|
|
{
|
|
switch (LOWORD(lpszStructType))
|
|
{
|
|
case (WORD)X509_CERT:
|
|
encodeFunc = CRYPT_AsnEncodeCert;
|
|
break;
|
|
case (WORD)X509_CERT_TO_BE_SIGNED:
|
|
encodeFunc = CRYPT_AsnEncodeCertInfo;
|
|
break;
|
|
case (WORD)X509_CERT_CRL_TO_BE_SIGNED:
|
|
encodeFunc = CRYPT_AsnEncodeCRLInfo;
|
|
break;
|
|
case (WORD)X509_EXTENSIONS:
|
|
encodeFunc = CRYPT_AsnEncodeExtensions;
|
|
break;
|
|
case (WORD)X509_NAME:
|
|
encodeFunc = CRYPT_AsnEncodeName;
|
|
break;
|
|
case (WORD)X509_PUBLIC_KEY_INFO:
|
|
encodeFunc = CRYPT_AsnEncodePubKeyInfo;
|
|
break;
|
|
case (WORD)X509_ALTERNATE_NAME:
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
break;
|
|
case (WORD)X509_BASIC_CONSTRAINTS2:
|
|
encodeFunc = CRYPT_AsnEncodeBasicConstraints2;
|
|
break;
|
|
case (WORD)RSA_CSP_PUBLICKEYBLOB:
|
|
encodeFunc = CRYPT_AsnEncodeRsaPubKey;
|
|
break;
|
|
case (WORD)X509_OCTET_STRING:
|
|
encodeFunc = CRYPT_AsnEncodeOctets;
|
|
break;
|
|
case (WORD)X509_BITS:
|
|
case (WORD)X509_KEY_USAGE:
|
|
encodeFunc = CRYPT_AsnEncodeBits;
|
|
break;
|
|
case (WORD)X509_INTEGER:
|
|
encodeFunc = CRYPT_AsnEncodeInt;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_INTEGER:
|
|
encodeFunc = CRYPT_AsnEncodeInteger;
|
|
break;
|
|
case (WORD)X509_MULTI_BYTE_UINT:
|
|
encodeFunc = CRYPT_AsnEncodeUnsignedInteger;
|
|
break;
|
|
case (WORD)X509_ENUMERATED:
|
|
encodeFunc = CRYPT_AsnEncodeEnumerated;
|
|
break;
|
|
case (WORD)X509_CHOICE_OF_TIME:
|
|
encodeFunc = CRYPT_AsnEncodeChoiceOfTime;
|
|
break;
|
|
case (WORD)X509_SEQUENCE_OF_ANY:
|
|
encodeFunc = CRYPT_AsnEncodeSequenceOfAny;
|
|
break;
|
|
case (WORD)PKCS_UTC_TIME:
|
|
encodeFunc = CRYPT_AsnEncodeUtcTime;
|
|
break;
|
|
default:
|
|
FIXME("%d: unimplemented\n", LOWORD(lpszStructType));
|
|
}
|
|
}
|
|
else if (!strcmp(lpszStructType, szOID_CERT_EXTENSIONS))
|
|
encodeFunc = CRYPT_AsnEncodeExtensions;
|
|
else if (!strcmp(lpszStructType, szOID_RSA_signingTime))
|
|
encodeFunc = CRYPT_AsnEncodeUtcTime;
|
|
else if (!strcmp(lpszStructType, szOID_CRL_REASON_CODE))
|
|
encodeFunc = CRYPT_AsnEncodeEnumerated;
|
|
else if (!strcmp(lpszStructType, szOID_KEY_USAGE))
|
|
encodeFunc = CRYPT_AsnEncodeBits;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_KEY_IDENTIFIER))
|
|
encodeFunc = CRYPT_AsnEncodeOctets;
|
|
else if (!strcmp(lpszStructType, szOID_BASIC_CONSTRAINTS2))
|
|
encodeFunc = CRYPT_AsnEncodeBasicConstraints2;
|
|
else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME))
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME2))
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_NEXT_UPDATE_LOCATION))
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME))
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME2))
|
|
encodeFunc = CRYPT_AsnEncodeAltName;
|
|
else
|
|
TRACE("OID %s not found or unimplemented, looking for DLL\n",
|
|
debugstr_a(lpszStructType));
|
|
if (!encodeFunc)
|
|
encodeFunc = (CryptEncodeObjectExFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, CRYPT_OID_ENCODE_OBJECT_EX_FUNC, &lib);
|
|
if (encodeFunc)
|
|
ret = encodeFunc(dwCertEncodingType, lpszStructType, pvStructInfo,
|
|
dwFlags, pEncodePara, pvEncoded, pcbEncoded);
|
|
else
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptDecodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo,
|
|
DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib;
|
|
CryptDecodeObjectFunc pCryptDecodeObject;
|
|
|
|
TRACE("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p)\n", dwCertEncodingType,
|
|
debugstr_a(lpszStructType), pbEncoded, cbEncoded, dwFlags,
|
|
pvStructInfo, pcbStructInfo);
|
|
|
|
if (!pvStructInfo && !pcbStructInfo)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Try registered DLL first.. */
|
|
pCryptDecodeObject =
|
|
(CryptDecodeObjectFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, CRYPT_OID_DECODE_OBJECT_FUNC, &lib);
|
|
if (pCryptDecodeObject)
|
|
{
|
|
ret = pCryptDecodeObject(dwCertEncodingType, lpszStructType,
|
|
pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo);
|
|
FreeLibrary(lib);
|
|
}
|
|
else
|
|
{
|
|
/* If not, use CryptDecodeObjectEx */
|
|
ret = CryptDecodeObjectEx(dwCertEncodingType, lpszStructType, pbEncoded,
|
|
cbEncoded, dwFlags, NULL, pvStructInfo, pcbStructInfo);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Gets the number of length bytes from the given (leading) length byte */
|
|
#define GET_LEN_BYTES(b) ((b) <= 0x7f ? 1 : 1 + ((b) & 0x7f))
|
|
|
|
/* Helper function to get the encoded length of the data starting at pbEncoded,
|
|
* where pbEncoded[0] is the tag. If the data are too short to contain a
|
|
* length or if the length is too large for cbEncoded, sets an appropriate
|
|
* error code and returns FALSE.
|
|
*/
|
|
static BOOL WINAPI CRYPT_GetLen(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD *len)
|
|
{
|
|
BOOL ret;
|
|
|
|
if (cbEncoded <= 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else if (pbEncoded[1] <= 0x7f)
|
|
{
|
|
if (pbEncoded[1] + 1 > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*len = pbEncoded[1];
|
|
ret = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BYTE lenLen = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
if (lenLen > sizeof(DWORD) + 1)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_LARGE);
|
|
ret = FALSE;
|
|
}
|
|
else if (lenLen + 2 > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
DWORD out = 0;
|
|
|
|
pbEncoded += 2;
|
|
while (--lenLen)
|
|
{
|
|
out <<= 8;
|
|
out |= *pbEncoded++;
|
|
}
|
|
if (out + lenLen + 1 > cbEncoded)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*len = out;
|
|
ret = TRUE;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Helper function to check *pcbStructInfo, set it to the required size, and
|
|
* optionally to allocate memory. Assumes pvStructInfo is not NULL.
|
|
* If CRYPT_DECODE_ALLOC_FLAG is set in dwFlags, *pvStructInfo will be set to a
|
|
* pointer to the newly allocated memory.
|
|
*/
|
|
static BOOL CRYPT_DecodeEnsureSpace(DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo,
|
|
DWORD bytesNeeded)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
{
|
|
if (pDecodePara && pDecodePara->pfnAlloc)
|
|
*(BYTE **)pvStructInfo = pDecodePara->pfnAlloc(bytesNeeded);
|
|
else
|
|
*(BYTE **)pvStructInfo = LocalAlloc(0, bytesNeeded);
|
|
if (!*(BYTE **)pvStructInfo)
|
|
ret = FALSE;
|
|
else
|
|
*pcbStructInfo = bytesNeeded;
|
|
}
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
*pcbStructInfo = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* A few of the members need explanation:
|
|
* offset:
|
|
* A sequence is decoded into a struct. The offset member is the
|
|
* offset of this item within that struct.
|
|
* decodeFunc:
|
|
* The decoder function to use. If this is NULL, then the member isn't
|
|
* decoded, but minSize space is reserved for it.
|
|
* minSize:
|
|
* The minimum amount of space occupied after decoding. You must set this.
|
|
* optional:
|
|
* If true, and a decoding function fails with CRYPT_E_ASN1_BADTAG, then
|
|
* minSize space is filled with 0 for this member. (Any other failure
|
|
* results in CRYPT_AsnDecodeSequence failing.)
|
|
* hasPointer, pointerOffset, minSize:
|
|
* If the item has dynamic data, set hasPointer to TRUE, pointerOffset to
|
|
* the offset within the (outer) struct of the data pointer (or to the
|
|
* first data pointer, if more than one exist).
|
|
* size:
|
|
* Used by CRYPT_AsnDecodeSequence, not for your use.
|
|
*/
|
|
struct AsnDecodeSequenceItem
|
|
{
|
|
DWORD offset;
|
|
CryptDecodeObjectExFunc decodeFunc;
|
|
DWORD minSize;
|
|
BOOL optional;
|
|
BOOL hasPointer;
|
|
DWORD pointerOffset;
|
|
DWORD size;
|
|
};
|
|
|
|
/* This decodes an arbitrary sequence into a contiguous block of memory
|
|
* (basically, a struct.) Each element being decoded is described by a struct
|
|
* AsnDecodeSequenceItem, see above.
|
|
* startingPointer is an optional pointer to the first place where dynamic
|
|
* data will be stored. If you know the starting offset, you may pass it
|
|
* here. Otherwise, pass NULL, and one will be inferred from the items.
|
|
* Each item decoder is never called with CRYPT_DECODE_ALLOC_FLAG set.
|
|
* If any undecoded data are left over, fails with CRYPT_E_ASN1_CORRUPT.
|
|
*/
|
|
static BOOL CRYPT_AsnDecodeSequence(DWORD dwCertEncodingType,
|
|
struct AsnDecodeSequenceItem items[], DWORD cItem, const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
|
|
void *pvStructInfo, DWORD *pcbStructInfo, void *startingPointer)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %ld, %p, %ld, %08lx, %p, %p, %ld, %p\n", items, cItem, pbEncoded,
|
|
cbEncoded, dwFlags, pDecodePara, pvStructInfo, *pcbStructInfo,
|
|
startingPointer);
|
|
|
|
if (pbEncoded[0] == ASN_SEQUENCE)
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD i, bytesNeeded = 0, minSize = 0;
|
|
const BYTE *ptr;
|
|
|
|
ptr = pbEncoded + 1 + lenBytes;
|
|
for (i = 0; ret && i < cItem; i++)
|
|
{
|
|
DWORD nextItemLen;
|
|
|
|
minSize += items[i].minSize;
|
|
if (cbEncoded - (ptr - pbEncoded) != 0)
|
|
{
|
|
if ((ret = CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextItemLen)))
|
|
{
|
|
BYTE nextItemLenBytes = GET_LEN_BYTES(ptr[1]);
|
|
|
|
if (items[i].decodeFunc)
|
|
{
|
|
TRACE("sizing item %ld\n", i);
|
|
ret = items[i].decodeFunc(dwCertEncodingType, NULL,
|
|
ptr, 1 + nextItemLenBytes + nextItemLen,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL, NULL,
|
|
&items[i].size);
|
|
if (ret)
|
|
{
|
|
/* Account for alignment padding */
|
|
bytesNeeded += items[i].size;
|
|
if (items[i].size % sizeof(DWORD))
|
|
bytesNeeded += sizeof(DWORD) -
|
|
items[i].size % sizeof(DWORD);
|
|
ptr += 1 + nextItemLenBytes + nextItemLen;
|
|
}
|
|
else if (items[i].optional &&
|
|
GetLastError() == CRYPT_E_ASN1_BADTAG)
|
|
{
|
|
TRACE("skipping optional item %ld\n", i);
|
|
bytesNeeded += items[i].minSize;
|
|
SetLastError(NOERROR);
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
TRACE("item %ld failed: %08lx\n", i,
|
|
GetLastError());
|
|
}
|
|
else
|
|
bytesNeeded += items[i].minSize;
|
|
}
|
|
}
|
|
else if (items[i].optional)
|
|
bytesNeeded += items[i].minSize;
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
if (cbEncoded - (ptr - pbEncoded) != 0)
|
|
{
|
|
TRACE("%ld remaining bytes, failing\n", cbEncoded -
|
|
(ptr - pbEncoded));
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
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 + minSize;
|
|
memset(pvStructInfo, 0, minSize);
|
|
ptr = pbEncoded + 1 + lenBytes;
|
|
for (i = 0; ret && i < cItem; i++)
|
|
{
|
|
if (cbEncoded - (ptr - pbEncoded) != 0)
|
|
{
|
|
DWORD nextItemLen;
|
|
BYTE nextItemLenBytes = GET_LEN_BYTES(ptr[1]);
|
|
|
|
CRYPT_GetLen(ptr, cbEncoded - (ptr - pbEncoded),
|
|
&nextItemLen);
|
|
if (items[i].hasPointer)
|
|
{
|
|
*(BYTE **)((BYTE *)pvStructInfo +
|
|
items[i].pointerOffset) = nextData;
|
|
}
|
|
if (items[i].decodeFunc)
|
|
{
|
|
TRACE("decoding item %ld\n", i);
|
|
ret = items[i].decodeFunc(dwCertEncodingType,
|
|
NULL, ptr, 1 + nextItemLenBytes + nextItemLen,
|
|
dwFlags & ~CRYPT_DECODE_ALLOC_FLAG, NULL,
|
|
(BYTE *)pvStructInfo + items[i].offset,
|
|
&items[i].size);
|
|
if (!ret)
|
|
TRACE("item %ld failed: %08lx\n", i,
|
|
GetLastError());
|
|
}
|
|
else
|
|
items[i].size = items[i].minSize;
|
|
if (ret)
|
|
{
|
|
if (items[i].hasPointer &&
|
|
items[i].size > items[i].minSize)
|
|
{
|
|
nextData += items[i].size -
|
|
items[i].minSize;
|
|
/* align nextData to DWORD boundaries */
|
|
if (items[i].size % sizeof(DWORD))
|
|
{
|
|
nextData += sizeof(DWORD) -
|
|
items[i].size % sizeof(DWORD);
|
|
}
|
|
}
|
|
ptr += 1 + nextItemLenBytes + nextItemLen;
|
|
}
|
|
else if (items[i].optional &&
|
|
GetLastError() == CRYPT_E_ASN1_BADTAG)
|
|
{
|
|
SetLastError(NOERROR);
|
|
ret = TRUE;
|
|
}
|
|
}
|
|
else if (!items[i].optional)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
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 = (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, %ld, 0x%08lx, %p, %p, %ld)\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 (%08lx)\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, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CERT_SIGNED_CONTENT_INFO, ToBeSigned),
|
|
CRYPT_AsnDecodeDerBlob, sizeof(CRYPT_DER_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_SIGNED_CONTENT_INFO, ToBeSigned.pbData), 0 },
|
|
{ offsetof(CERT_SIGNED_CONTENT_INFO, SignatureAlgorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CERT_SIGNED_CONTENT_INFO,
|
|
SignatureAlgorithm.pszObjId), 0 },
|
|
{ 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
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
|
|
if (pbEncoded[0] == (ASN_CONTEXT | ASN_CONSTRUCTOR))
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
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[] = {
|
|
{ offsetof(CERT_PRIVATE_KEY_VALIDITY, NotBefore),
|
|
CRYPT_AsnDecodeChoiceOfTime, sizeof(FILETIME), FALSE, FALSE, 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;
|
|
}
|
|
|
|
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;
|
|
|
|
if (pbEncoded[0] == (ASN_CONTEXT | ASN_CONSTRUCTOR | 3))
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
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;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CERT_INFO, dwVersion), CRYPT_AsnDecodeCertVersion,
|
|
sizeof(DWORD), TRUE, FALSE, 0, 0 },
|
|
{ offsetof(CERT_INFO, SerialNumber), CRYPT_AsnDecodeIntegerInternal,
|
|
sizeof(CRYPT_INTEGER_BLOB), FALSE, TRUE, offsetof(CERT_INFO,
|
|
SerialNumber.pbData), 0 },
|
|
{ offsetof(CERT_INFO, SignatureAlgorithm), CRYPT_AsnDecodeAlgorithmId,
|
|
sizeof(CRYPT_ALGORITHM_IDENTIFIER), FALSE, TRUE, offsetof(CERT_INFO,
|
|
SignatureAlgorithm.pszObjId), 0 },
|
|
{ offsetof(CERT_INFO, Issuer), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CERT_INFO,
|
|
Issuer.pbData) },
|
|
{ offsetof(CERT_INFO, NotBefore), CRYPT_AsnDecodeValidity,
|
|
sizeof(CERT_PRIVATE_KEY_VALIDITY), FALSE, FALSE, 0 },
|
|
{ offsetof(CERT_INFO, Subject), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CERT_INFO,
|
|
Subject.pbData) },
|
|
{ offsetof(CERT_INFO, SubjectPublicKeyInfo), CRYPT_AsnDecodePubKeyInfo,
|
|
sizeof(CERT_PUBLIC_KEY_INFO), FALSE, TRUE, offsetof(CERT_INFO,
|
|
SubjectPublicKeyInfo.Algorithm.Parameters.pbData), 0 },
|
|
{ offsetof(CERT_INFO, IssuerUniqueId), CRYPT_AsnDecodeBitsInternal,
|
|
sizeof(CRYPT_BIT_BLOB), TRUE, TRUE, offsetof(CERT_INFO,
|
|
IssuerUniqueId.pbData), 0 },
|
|
{ offsetof(CERT_INFO, SubjectUniqueId), CRYPT_AsnDecodeBitsInternal,
|
|
sizeof(CRYPT_BIT_BLOB), TRUE, TRUE, offsetof(CERT_INFO,
|
|
SubjectUniqueId.pbData), 0 },
|
|
{ offsetof(CERT_INFO, cExtension), CRYPT_AsnDecodeCertExtensions,
|
|
sizeof(CERT_EXTENSIONS), TRUE, TRUE, offsetof(CERT_INFO,
|
|
rgExtension), 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 CRYPT_AsnDecodeCRLEntry(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, PCRL_ENTRY entry, DWORD *pcbEntry)
|
|
{
|
|
BOOL ret;
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CRL_ENTRY, SerialNumber), CRYPT_AsnDecodeIntegerInternal,
|
|
sizeof(CRYPT_INTEGER_BLOB), FALSE, TRUE, offsetof(CRL_ENTRY,
|
|
SerialNumber.pbData), 0 },
|
|
{ offsetof(CRL_ENTRY, RevocationDate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
{ offsetof(CRL_ENTRY, cExtension), CRYPT_AsnDecodeExtensionsInternal,
|
|
sizeof(CERT_EXTENSIONS), TRUE, TRUE, offsetof(CRL_ENTRY,
|
|
rgExtension), 0 },
|
|
};
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %ld\n", pbEncoded, cbEncoded, dwFlags, entry,
|
|
*pcbEntry);
|
|
|
|
ret = CRYPT_AsnDecodeSequence(X509_ASN_ENCODING, items,
|
|
sizeof(items) / sizeof(items[0]), pbEncoded, cbEncoded, dwFlags,
|
|
NULL, entry, pcbEntry, entry ? entry->SerialNumber.pbData : NULL);
|
|
TRACE("Returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
typedef struct _WINE_CRL_ENTRIES {
|
|
DWORD cCRLEntry;
|
|
PCRL_ENTRY rgCRLEntry;
|
|
} WINE_CRL_ENTRIES, *PWINE_CRL_ENTRIES;
|
|
|
|
/* Warning: assumes pvStructInfo is a WINE_CRL_ENTRIES whose rgCRLEntry 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;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (pbEncoded[0] == ASN_SEQUENCEOF)
|
|
{
|
|
DWORD dataLen, bytesNeeded;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD cCRLEntry = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = sizeof(WINE_CRL_ENTRIES);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
DWORD size;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeCRLEntry(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cCRLEntry++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
PWINE_CRL_ENTRIES entries;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
*pcbStructInfo = bytesNeeded;
|
|
entries = (PWINE_CRL_ENTRIES)pvStructInfo;
|
|
entries->cCRLEntry = cCRLEntry;
|
|
assert(entries->rgCRLEntry);
|
|
nextData = (BYTE *)entries->rgCRLEntry +
|
|
entries->cCRLEntry * sizeof(CRL_ENTRY);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cCRLEntry && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
entries->rgCRLEntry[i].SerialNumber.pbData = nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeCRLEntry(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags,
|
|
&entries->rgCRLEntry[i], &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
bytesNeeded -= size;
|
|
/* Increment nextData by the difference of the
|
|
* minimum size and the actual size.
|
|
*/
|
|
if (size > sizeof(CRL_ENTRY))
|
|
nextData += size - sizeof(CRL_ENTRY);
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
TRACE("Returning %d (%08lx)\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)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CRL_INFO, dwVersion), CRYPT_AsnDecodeCertVersion,
|
|
sizeof(DWORD), TRUE, FALSE, 0, 0 },
|
|
{ offsetof(CRL_INFO, SignatureAlgorithm), CRYPT_AsnDecodeAlgorithmId,
|
|
sizeof(CRYPT_ALGORITHM_IDENTIFIER), FALSE, TRUE, offsetof(CRL_INFO,
|
|
SignatureAlgorithm.pszObjId), 0 },
|
|
{ offsetof(CRL_INFO, Issuer), CRYPT_AsnDecodeDerBlob,
|
|
sizeof(CRYPT_DER_BLOB), FALSE, TRUE, offsetof(CRL_INFO,
|
|
Issuer.pbData) },
|
|
{ offsetof(CRL_INFO, ThisUpdate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), FALSE, FALSE, 0 },
|
|
{ offsetof(CRL_INFO, NextUpdate), CRYPT_AsnDecodeChoiceOfTime,
|
|
sizeof(FILETIME), TRUE, FALSE, 0 },
|
|
{ offsetof(CRL_INFO, cCRLEntry), CRYPT_AsnDecodeCRLEntries,
|
|
sizeof(WINE_CRL_ENTRIES), TRUE, TRUE, offsetof(CRL_INFO,
|
|
rgCRLEntry), 0 },
|
|
/* Note that the extensions are ignored by MS, so I'll ignore them too
|
|
*/
|
|
{ offsetof(CRL_INFO, cExtension), NULL,
|
|
sizeof(CERT_EXTENSIONS), 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
|
|
|
|
TRACE("Returning %d (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
/* Differences between this and CRYPT_AsnDecodeOid:
|
|
* - pvStructInfo is a LPSTR *, not an LPSTR
|
|
* - CRYPT_AsnDecodeOid doesn't account for the size of an LPSTR in its byte
|
|
* count, whereas our callers (typically CRYPT_AsnDecodeSequence) expect this
|
|
* to
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeOidWrapper(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
ret = CRYPT_AsnDecodeOid(pbEncoded, cbEncoded, dwFlags,
|
|
pvStructInfo ? *(LPSTR *)pvStructInfo : NULL, pcbStructInfo);
|
|
if (ret || GetLastError() == ERROR_MORE_DATA)
|
|
*pcbStructInfo += sizeof(LPSTR);
|
|
if (ret && pvStructInfo)
|
|
TRACE("returning %s\n", debugstr_a(*(LPSTR *)pvStructInfo));
|
|
return ret;
|
|
}
|
|
|
|
/* Warning: assumes ext->pszObjId is set ahead of time! */
|
|
static BOOL CRYPT_AsnDecodeExtension(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, CERT_EXTENSION *ext, DWORD *pcbExt)
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CERT_EXTENSION, pszObjId), CRYPT_AsnDecodeOidWrapper,
|
|
sizeof(LPSTR), FALSE, TRUE, offsetof(CERT_EXTENSION, pszObjId), 0 },
|
|
{ offsetof(CERT_EXTENSION, fCritical), CRYPT_AsnDecodeBool,
|
|
sizeof(BOOL), TRUE, FALSE, 0, 0 },
|
|
{ offsetof(CERT_EXTENSION, Value), CRYPT_AsnDecodeOctetsInternal,
|
|
sizeof(CRYPT_OBJID_BLOB), FALSE, TRUE, offsetof(CERT_EXTENSION,
|
|
Value.pbData) },
|
|
};
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %ld\n", pbEncoded, cbEncoded, dwFlags, ext,
|
|
*pcbExt);
|
|
|
|
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, pcbExt, ext ? ext->pszObjId : NULL);
|
|
if (ext)
|
|
TRACE("ext->pszObjId is %p (%s)\n", ext->pszObjId,
|
|
debugstr_a(ext->pszObjId));
|
|
TRACE("returning %d (%08lx)\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;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (pbEncoded[0] == ASN_SEQUENCEOF)
|
|
{
|
|
DWORD dataLen, bytesNeeded;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD cExtension = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = sizeof(CERT_EXTENSIONS);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
DWORD size;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
size = 0;
|
|
ret = CRYPT_AsnDecodeExtension(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cExtension++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if (*pcbStructInfo < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
*pcbStructInfo = bytesNeeded;
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
CERT_EXTENSIONS *exts;
|
|
|
|
*pcbStructInfo = bytesNeeded;
|
|
exts = (CERT_EXTENSIONS *)pvStructInfo;
|
|
exts->cExtension = cExtension;
|
|
assert(exts->rgExtension);
|
|
nextData = (BYTE *)exts->rgExtension +
|
|
exts->cExtension * sizeof(CERT_EXTENSION);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cExtension && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
exts->rgExtension[i].pszObjId = (LPSTR)nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeExtension(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags,
|
|
&exts->rgExtension[i], &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
bytesNeeded -= size;
|
|
if (size > sizeof(CERT_EXTENSION))
|
|
nextData += size - sizeof(CERT_EXTENSION);
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
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;
|
|
}
|
|
|
|
/* FIXME: honor the CRYPT_DECODE_SHARE_OID_STRING_FLAG. */
|
|
static BOOL WINAPI CRYPT_AsnDecodeOid(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, LPSTR pszObjId, DWORD *pcbObjId)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %ld\n", pbEncoded, cbEncoded, dwFlags, pszObjId,
|
|
*pcbObjId);
|
|
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == ASN_OBJECTIDENTIFIER)
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
DWORD bytesNeeded;
|
|
|
|
if (dataLen)
|
|
{
|
|
/* The largest possible string for the first two components
|
|
* is 2.175 (= 2 * 40 + 175 = 255), so this is big enough.
|
|
*/
|
|
char firstTwo[6];
|
|
const BYTE *ptr;
|
|
|
|
snprintf(firstTwo, sizeof(firstTwo), "%d.%d",
|
|
pbEncoded[1 + lenBytes] / 40,
|
|
pbEncoded[1 + lenBytes] - (pbEncoded[1 + lenBytes] / 40)
|
|
* 40);
|
|
bytesNeeded = strlen(firstTwo) + 1;
|
|
for (ptr = pbEncoded + 2 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
/* large enough for ".4000000" */
|
|
char str[9];
|
|
int val = 0;
|
|
|
|
while (ptr - pbEncoded - 1 - lenBytes < dataLen &&
|
|
(*ptr & 0x80))
|
|
{
|
|
val <<= 7;
|
|
val |= *ptr & 0x7f;
|
|
ptr++;
|
|
}
|
|
if (ptr - pbEncoded - 1 - lenBytes >= dataLen ||
|
|
(*ptr & 0x80))
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
val <<= 7;
|
|
val |= *ptr++;
|
|
snprintf(str, sizeof(str), ".%d", val);
|
|
bytesNeeded += strlen(str);
|
|
}
|
|
}
|
|
if (!pszObjId)
|
|
*pcbObjId = bytesNeeded;
|
|
else if (*pcbObjId < bytesNeeded)
|
|
{
|
|
*pcbObjId = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*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
|
|
bytesNeeded = 0;
|
|
*pcbObjId = bytesNeeded;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__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_AsnDecodeNameValue(const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, CERT_NAME_VALUE *value, DWORD *pcbValue)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
break;
|
|
default:
|
|
FIXME("Unimplemented string type %02x\n", pbEncoded[0]);
|
|
SetLastError(OSS_UNIMPLEMENTED);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
DWORD bytesNeeded = sizeof(CERT_NAME_VALUE);
|
|
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
if (!(dwFlags & CRYPT_DECODE_NOCOPY_FLAG))
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
}
|
|
if (!value)
|
|
*pcbValue = bytesNeeded;
|
|
else if (*pcbValue < bytesNeeded)
|
|
{
|
|
*pcbValue = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
*pcbValue = bytesNeeded;
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
value->dwValueType = CERT_RDN_NUMERIC_STRING;
|
|
break;
|
|
case ASN_PRINTABLESTRING:
|
|
value->dwValueType = CERT_RDN_PRINTABLE_STRING;
|
|
break;
|
|
case ASN_IA5STRING:
|
|
value->dwValueType = CERT_RDN_IA5_STRING;
|
|
break;
|
|
}
|
|
if (dataLen)
|
|
{
|
|
switch (pbEncoded[0])
|
|
{
|
|
case ASN_NUMERICSTRING:
|
|
case ASN_PRINTABLESTRING:
|
|
case ASN_IA5STRING:
|
|
value->Value.cbData = dataLen;
|
|
if (dwFlags & CRYPT_DECODE_NOCOPY_FLAG)
|
|
value->Value.pbData = (BYTE *)pbEncoded + 1 +
|
|
lenBytes;
|
|
else
|
|
{
|
|
assert(value->Value.pbData);
|
|
memcpy(value->Value.pbData,
|
|
pbEncoded + 1 + lenBytes, dataLen);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
value->Value.cbData = 0;
|
|
value->Value.pbData = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
/* FIXME: this should use CRYPT_AsnDecodeSequence (though that won't accept it
|
|
* at the moment because of the ASN_CONSTRUCTOR tag.)
|
|
*/
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdnAttr(const BYTE *pbEncoded,
|
|
DWORD cbEncoded, DWORD dwFlags, CERT_RDN_ATTR *attr, DWORD *pcbAttr)
|
|
{
|
|
BOOL ret;
|
|
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == (ASN_CONSTRUCTOR | ASN_SEQUENCE))
|
|
{
|
|
DWORD bytesNeeded, dataLen, size;
|
|
BYTE lenBytes;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
/* The data length must be at least 4, two for the tag and
|
|
* length for the OID, and two for the string (assuming both
|
|
* have short-form lengths.)
|
|
*/
|
|
if (dataLen < 4)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_EOD);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
bytesNeeded = sizeof(CERT_RDN_ATTR);
|
|
lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
ret = CRYPT_AsnDecodeOid(pbEncoded + 1 + lenBytes,
|
|
cbEncoded - 1 - lenBytes, dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
/* ugly: need to know the size of the next element of
|
|
* the sequence, so get it directly
|
|
*/
|
|
DWORD objIdOfset = 1 + lenBytes, objIdLen,
|
|
nameValueOffset = 0;
|
|
|
|
ret = CRYPT_GetLen(pbEncoded + objIdOfset,
|
|
cbEncoded - objIdOfset, &objIdLen);
|
|
bytesNeeded += size;
|
|
/* hack: like encoding, this takes advantage of the
|
|
* fact that the rest of the structure is identical to
|
|
* a CERT_NAME_VALUE.
|
|
*/
|
|
if (ret)
|
|
{
|
|
nameValueOffset = objIdOfset + objIdLen + 1 +
|
|
GET_LEN_BYTES(pbEncoded[objIdOfset]);
|
|
ret = CRYPT_AsnDecodeNameValue(
|
|
pbEncoded + nameValueOffset,
|
|
cbEncoded - nameValueOffset, dwFlags, NULL, &size);
|
|
}
|
|
if (ret)
|
|
{
|
|
bytesNeeded += size;
|
|
if (!attr)
|
|
*pcbAttr = bytesNeeded;
|
|
else if (*pcbAttr < bytesNeeded)
|
|
{
|
|
*pcbAttr = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
BYTE *originalData = attr->Value.pbData;
|
|
|
|
*pcbAttr = bytesNeeded;
|
|
/* strange: decode the value first, because it
|
|
* has a counted size, and we can store the OID
|
|
* after it. Keep track of the original data
|
|
* pointer, we'll need to know whether it was
|
|
* changed.
|
|
*/
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeNameValue(
|
|
pbEncoded + nameValueOffset,
|
|
cbEncoded - nameValueOffset, dwFlags,
|
|
(CERT_NAME_VALUE *)&attr->dwValueType, &size);
|
|
if (ret)
|
|
{
|
|
if (objIdLen)
|
|
{
|
|
/* if the data were copied to the
|
|
* original location, the OID goes
|
|
* after. Otherwise it goes in the
|
|
* spot originally reserved for the
|
|
* data.
|
|
*/
|
|
if (attr->Value.pbData == originalData)
|
|
attr->pszObjId =
|
|
(LPSTR)(attr->Value.pbData +
|
|
attr->Value.cbData);
|
|
else
|
|
attr->pszObjId =
|
|
(LPSTR)originalData;
|
|
size = bytesNeeded - size;
|
|
ret = CRYPT_AsnDecodeOid(
|
|
pbEncoded + objIdOfset,
|
|
cbEncoded - objIdOfset,
|
|
dwFlags, attr->pszObjId, &size);
|
|
}
|
|
else
|
|
attr->pszObjId = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_AsnDecodeRdn(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, CERT_RDN *rdn, DWORD *pcbRdn)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == (ASN_CONSTRUCTOR | ASN_SETOF))
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD bytesNeeded, cRDNAttr = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = sizeof(CERT_RDN);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
DWORD size;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
ret = CRYPT_AsnDecodeRdnAttr(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cRDNAttr++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!rdn)
|
|
*pcbRdn = bytesNeeded;
|
|
else if (*pcbRdn < bytesNeeded)
|
|
{
|
|
*pcbRdn = bytesNeeded;
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
|
|
*pcbRdn = bytesNeeded;
|
|
rdn->cRDNAttr = cRDNAttr;
|
|
rdn->rgRDNAttr = (CERT_RDN_ATTR *)((BYTE *)rdn +
|
|
sizeof(CERT_RDN));
|
|
nextData = (BYTE *)rdn->rgRDNAttr +
|
|
rdn->cRDNAttr * sizeof(CERT_RDN_ATTR);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cRDNAttr && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
rdn->rgRDNAttr[i].Value.pbData = nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeRdnAttr(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags,
|
|
&rdn->rgRDNAttr[i], &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
bytesNeeded -= size;
|
|
/* If dwFlags & CRYPT_DECODE_NOCOPY_FLAG, the
|
|
* data may not have been copied.
|
|
*/
|
|
if (rdn->rgRDNAttr[i].Value.pbData == nextData)
|
|
nextData +=
|
|
rdn->rgRDNAttr[i].Value.cbData;
|
|
/* Ugly: the OID, if copied, is stored in
|
|
* memory after the value, so increment by its
|
|
* string length if it's set and points here.
|
|
*/
|
|
if ((const BYTE *)rdn->rgRDNAttr[i].pszObjId
|
|
== nextData)
|
|
nextData += strlen(
|
|
rdn->rgRDNAttr[i].pszObjId) + 1;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
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
|
|
{
|
|
if (pbEncoded[0] == (ASN_CONSTRUCTOR | ASN_SEQUENCEOF))
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD bytesNeeded, cRDN = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = sizeof(CERT_NAME_INFO);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
DWORD size;
|
|
|
|
ret = CRYPT_AsnDecodeRdn(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cRDN++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CERT_NAME_INFO *info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (CERT_NAME_INFO *)pvStructInfo;
|
|
info->cRDN = cRDN;
|
|
if (info->cRDN == 0)
|
|
info->rgRDN = NULL;
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
|
|
info->rgRDN = (CERT_RDN *)((BYTE *)pvStructInfo +
|
|
sizeof(CERT_NAME_INFO));
|
|
nextData = (BYTE *)info->rgRDN +
|
|
info->cRDN * sizeof(CERT_RDN);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cRDN && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
info->rgRDN[i].rgRDNAttr =
|
|
(CERT_RDN_ATTR *)nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeRdn(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags,
|
|
&info->rgRDN[i], &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
nextData += size;
|
|
bytesNeeded -= size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 +
|
|
GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__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, %ld, %08lx, %p, %p, %ld\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_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[] = {
|
|
{ offsetof(CRYPT_ALGORITHM_IDENTIFIER, pszObjId),
|
|
CRYPT_AsnDecodeOidWrapper, sizeof(LPSTR), FALSE, TRUE,
|
|
offsetof(CRYPT_ALGORITHM_IDENTIFIER, pszObjId), 0 },
|
|
{ offsetof(CRYPT_ALGORITHM_IDENTIFIER, Parameters),
|
|
CRYPT_AsnDecodeCopyBytes, sizeof(CRYPT_OBJID_BLOB), TRUE, TRUE,
|
|
offsetof(CRYPT_ALGORITHM_IDENTIFIER, Parameters.pbData), 0 },
|
|
};
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\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_AsnDecodePubKeyInfo(DWORD dwCertEncodingType,
|
|
LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = TRUE;
|
|
|
|
__TRY
|
|
{
|
|
struct AsnDecodeSequenceItem items[] = {
|
|
{ offsetof(CERT_PUBLIC_KEY_INFO, Algorithm),
|
|
CRYPT_AsnDecodeAlgorithmId, sizeof(CRYPT_ALGORITHM_IDENTIFIER),
|
|
FALSE, TRUE, offsetof(CERT_PUBLIC_KEY_INFO,
|
|
Algorithm.pszObjId) },
|
|
{ offsetof(CERT_PUBLIC_KEY_INFO, PublicKey),
|
|
CRYPT_AsnDecodeBitsInternal, sizeof(CRYPT_BIT_BLOB), FALSE, TRUE,
|
|
offsetof(CERT_PUBLIC_KEY_INFO, PublicKey.pbData) },
|
|
};
|
|
|
|
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_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 (pbEncoded[0] != ASN_BOOL)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
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 (%08lx)\n", ret, GetLastError());
|
|
return ret;
|
|
}
|
|
|
|
static BOOL CRYPT_AsnDecodeAltNameEntry(const BYTE *pbEncoded, DWORD cbEncoded,
|
|
DWORD dwFlags, CERT_ALT_NAME_ENTRY *entry, DWORD *pcbEntry)
|
|
{
|
|
DWORD dataLen, lenBytes, bytesNeeded = sizeof(CERT_ALT_NAME_ENTRY);
|
|
BOOL ret;
|
|
|
|
if (cbEncoded < 2)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
return FALSE;
|
|
}
|
|
if ((pbEncoded[0] & ASN_FLAGS_MASK) != ASN_CONTEXT)
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
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 7: /* iPAddress */
|
|
bytesNeeded += dataLen;
|
|
break;
|
|
case 8: /* registeredID */
|
|
/* FIXME: decode as OID */
|
|
case 0: /* otherName */
|
|
case 4: /* directoryName */
|
|
FIXME("stub\n");
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
break;
|
|
case 3: /* x400Address, unimplemented */
|
|
case 5: /* ediPartyName, unimplemented */
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
break;
|
|
default:
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!entry)
|
|
*pcbEntry = bytesNeeded;
|
|
else if (*pcbEntry < bytesNeeded)
|
|
{
|
|
SetLastError(ERROR_MORE_DATA);
|
|
ret = FALSE;
|
|
}
|
|
else
|
|
{
|
|
/* 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;
|
|
break;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
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;
|
|
|
|
__TRY
|
|
{
|
|
if (pbEncoded[0] == ASN_SEQUENCEOF)
|
|
{
|
|
DWORD dataLen;
|
|
|
|
if ((ret = CRYPT_GetLen(pbEncoded, cbEncoded, &dataLen)))
|
|
{
|
|
DWORD bytesNeeded, cEntry = 0;
|
|
BYTE lenBytes = GET_LEN_BYTES(pbEncoded[1]);
|
|
|
|
bytesNeeded = sizeof(CERT_ALT_NAME_INFO);
|
|
if (dataLen)
|
|
{
|
|
const BYTE *ptr;
|
|
|
|
for (ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
ptr - pbEncoded - 1 - lenBytes < dataLen; )
|
|
{
|
|
DWORD size;
|
|
|
|
ret = CRYPT_AsnDecodeAltNameEntry(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags, NULL, &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
cEntry++;
|
|
bytesNeeded += size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 + GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
if (ret)
|
|
{
|
|
if (!pvStructInfo)
|
|
*pcbStructInfo = bytesNeeded;
|
|
else if ((ret = CRYPT_DecodeEnsureSpace(dwFlags,
|
|
pDecodePara, pvStructInfo, pcbStructInfo, bytesNeeded)))
|
|
{
|
|
CERT_ALT_NAME_INFO *info;
|
|
|
|
if (dwFlags & CRYPT_DECODE_ALLOC_FLAG)
|
|
pvStructInfo = *(BYTE **)pvStructInfo;
|
|
info = (CERT_ALT_NAME_INFO *)pvStructInfo;
|
|
info->cAltEntry = 0;
|
|
if (cEntry == 0)
|
|
info->rgAltEntry = NULL;
|
|
else
|
|
{
|
|
DWORD size, i;
|
|
BYTE *nextData;
|
|
const BYTE *ptr;
|
|
|
|
info->rgAltEntry =
|
|
(CERT_ALT_NAME_ENTRY *)((BYTE *)pvStructInfo +
|
|
sizeof(CERT_ALT_NAME_INFO));
|
|
nextData = (BYTE *)info->rgAltEntry +
|
|
cEntry * sizeof(CERT_ALT_NAME_ENTRY);
|
|
for (i = 0, ptr = pbEncoded + 1 + lenBytes; ret &&
|
|
i < cEntry && ptr - pbEncoded - 1 - lenBytes <
|
|
dataLen; i++)
|
|
{
|
|
info->rgAltEntry[i].u.pwszURL =
|
|
(LPWSTR)nextData;
|
|
size = bytesNeeded;
|
|
ret = CRYPT_AsnDecodeAltNameEntry(ptr,
|
|
cbEncoded - (ptr - pbEncoded), dwFlags,
|
|
&info->rgAltEntry[i], &size);
|
|
if (ret)
|
|
{
|
|
DWORD nextLen;
|
|
|
|
info->cAltEntry++;
|
|
nextData += size -
|
|
sizeof(CERT_ALT_NAME_ENTRY);
|
|
bytesNeeded -= size;
|
|
ret = CRYPT_GetLen(ptr,
|
|
cbEncoded - (ptr - pbEncoded), &nextLen);
|
|
if (ret)
|
|
ptr += nextLen + 1 +
|
|
GET_LEN_BYTES(ptr[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__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;
|
|
|
|
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 %ld\n",
|
|
constraint->dwPathLenConstraint);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_CORRUPT);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
TRACE("returning %d (%08lx)\n", ret, GetLastError());
|
|
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[] = {
|
|
{ offsetof(CERT_BASIC_CONSTRAINTS2_INFO, fCA), CRYPT_AsnDecodeBool,
|
|
sizeof(BOOL), TRUE, FALSE, 0, 0 },
|
|
{ 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[] = {
|
|
{ offsetof(struct DECODED_RSA_PUB_KEY, modulus),
|
|
CRYPT_AsnDecodeUnsignedIntegerInternal, sizeof(CRYPT_INTEGER_BLOB),
|
|
FALSE, TRUE, offsetof(struct DECODED_RSA_PUB_KEY, modulus.pbData),
|
|
0 },
|
|
{ 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;
|
|
|
|
TRACE("%p, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
if (pbEncoded[0] == ASN_OCTETSTRING)
|
|
{
|
|
DWORD bytesNeeded, dataLen;
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
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, %ld, %08lx, %p, %p, %ld\n", pbEncoded, cbEncoded, dwFlags,
|
|
pDecodePara, pvStructInfo, *pcbStructInfo);
|
|
|
|
__TRY
|
|
{
|
|
DWORD bytesNeeded;
|
|
|
|
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);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SetLastError(CRYPT_E_ASN1_BADTAG);
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
__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, %ld, 0x%08lx, %p, %p, %ld)\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 (%08lx)\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, %ld, 0x%08lx, %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 (%08lx)\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);
|
|
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;
|
|
|
|
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);
|
|
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_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 ((ret = CRYPT_AsnDecodeIntegerInternal(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_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);
|
|
return FALSE;
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError(STATUS_ACCESS_VIOLATION);
|
|
ret = FALSE;
|
|
}
|
|
__ENDTRY
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptDecodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
|
|
const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
|
|
PCRYPT_DECODE_PARA pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
|
|
{
|
|
BOOL ret = FALSE;
|
|
HMODULE lib = NULL;
|
|
CryptDecodeObjectExFunc decodeFunc = NULL;
|
|
|
|
TRACE("(0x%08lx, %s, %p, %ld, 0x%08lx, %p, %p, %p)\n",
|
|
dwCertEncodingType, 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_AsnDecodeCert;
|
|
break;
|
|
case (WORD)X509_CERT_TO_BE_SIGNED:
|
|
decodeFunc = CRYPT_AsnDecodeCertInfo;
|
|
break;
|
|
case (WORD)X509_CERT_CRL_TO_BE_SIGNED:
|
|
decodeFunc = CRYPT_AsnDecodeCRLInfo;
|
|
break;
|
|
case (WORD)X509_EXTENSIONS:
|
|
decodeFunc = CRYPT_AsnDecodeExtensions;
|
|
break;
|
|
case (WORD)X509_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeName;
|
|
break;
|
|
case (WORD)X509_PUBLIC_KEY_INFO:
|
|
decodeFunc = CRYPT_AsnDecodePubKeyInfo;
|
|
break;
|
|
case (WORD)X509_ALTERNATE_NAME:
|
|
decodeFunc = CRYPT_AsnDecodeAltName;
|
|
break;
|
|
case (WORD)X509_BASIC_CONSTRAINTS2:
|
|
decodeFunc = CRYPT_AsnDecodeBasicConstraints2;
|
|
break;
|
|
case (WORD)RSA_CSP_PUBLICKEYBLOB:
|
|
decodeFunc = CRYPT_AsnDecodeRsaPubKey;
|
|
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_SEQUENCE_OF_ANY:
|
|
decodeFunc = CRYPT_AsnDecodeSequenceOfAny;
|
|
break;
|
|
case (WORD)PKCS_UTC_TIME:
|
|
decodeFunc = CRYPT_AsnDecodeUtcTime;
|
|
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_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_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
|
|
TRACE("OID %s not found or unimplemented, looking for DLL\n",
|
|
debugstr_a(lpszStructType));
|
|
if (!decodeFunc)
|
|
decodeFunc = (CryptDecodeObjectExFunc)CRYPT_GetFunc(dwCertEncodingType,
|
|
lpszStructType, CRYPT_OID_DECODE_OBJECT_EX_FUNC, &lib);
|
|
if (decodeFunc)
|
|
ret = decodeFunc(dwCertEncodingType, lpszStructType, pbEncoded,
|
|
cbEncoded, dwFlags, pDecodePara, pvStructInfo, pcbStructInfo);
|
|
else
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptExportPublicKeyInfo(HCRYPTPROV hCryptProv, DWORD dwKeySpec,
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DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo)
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{
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return CryptExportPublicKeyInfoEx(hCryptProv, dwKeySpec, dwCertEncodingType,
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NULL, 0, NULL, pInfo, pcbInfo);
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}
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static BOOL WINAPI CRYPT_ExportRsaPublicKeyInfoEx(HCRYPTPROV hCryptProv,
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DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId,
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DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo)
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{
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BOOL ret;
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HCRYPTKEY key;
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TRACE("(%ld, %ld, %08lx, %s, %08lx, %p, %p, %p)\n", hCryptProv, dwKeySpec,
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dwCertEncodingType, debugstr_a(pszPublicKeyObjId), dwFlags, pvAuxInfo,
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pInfo, pcbInfo);
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|
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if (!pszPublicKeyObjId)
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pszPublicKeyObjId = szOID_RSA_RSA;
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if ((ret = CryptGetUserKey(hCryptProv, dwKeySpec, &key)))
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{
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DWORD keySize = 0;
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ret = CryptExportKey(key, 0, PUBLICKEYBLOB, 0, NULL, &keySize);
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if (ret)
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{
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LPBYTE pubKey = CryptMemAlloc(keySize);
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if (pubKey)
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{
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ret = CryptExportKey(key, 0, PUBLICKEYBLOB, 0, pubKey,
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&keySize);
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if (ret)
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{
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DWORD encodedLen = 0;
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ret = CryptEncodeObject(dwCertEncodingType,
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RSA_CSP_PUBLICKEYBLOB, pubKey, NULL, &encodedLen);
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if (ret)
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{
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DWORD sizeNeeded = sizeof(CERT_PUBLIC_KEY_INFO) +
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strlen(pszPublicKeyObjId) + 1 + encodedLen;
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|
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if (!pInfo)
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*pcbInfo = sizeNeeded;
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else if (*pcbInfo < sizeNeeded)
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{
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SetLastError(ERROR_MORE_DATA);
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*pcbInfo = sizeNeeded;
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ret = FALSE;
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}
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else
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{
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pInfo->Algorithm.pszObjId = (char *)pInfo +
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sizeof(CERT_PUBLIC_KEY_INFO);
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lstrcpyA(pInfo->Algorithm.pszObjId,
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pszPublicKeyObjId);
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pInfo->Algorithm.Parameters.cbData = 0;
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pInfo->Algorithm.Parameters.pbData = NULL;
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pInfo->PublicKey.pbData =
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(BYTE *)pInfo->Algorithm.pszObjId
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+ lstrlenA(pInfo->Algorithm.pszObjId) + 1;
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pInfo->PublicKey.cbData = encodedLen;
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pInfo->PublicKey.cUnusedBits = 0;
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ret = CryptEncodeObject(dwCertEncodingType,
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RSA_CSP_PUBLICKEYBLOB, pubKey,
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pInfo->PublicKey.pbData, &pInfo->PublicKey.cbData);
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}
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}
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}
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CryptMemFree(pubKey);
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}
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else
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ret = FALSE;
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}
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CryptDestroyKey(key);
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}
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return ret;
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}
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|
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|
typedef BOOL (WINAPI *ExportPublicKeyInfoExFunc)(HCRYPTPROV hCryptProv,
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DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId,
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DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo);
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|
|
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BOOL WINAPI CryptExportPublicKeyInfoEx(HCRYPTPROV hCryptProv, DWORD dwKeySpec,
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DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags,
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void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo)
|
|
{
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|
BOOL ret;
|
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ExportPublicKeyInfoExFunc exportFunc = NULL;
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HMODULE lib = NULL;
|
|
|
|
TRACE("(%ld, %ld, %08lx, %s, %08lx, %p, %p, %p)\n", hCryptProv, dwKeySpec,
|
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dwCertEncodingType, debugstr_a(pszPublicKeyObjId), dwFlags, pvAuxInfo,
|
|
pInfo, pcbInfo);
|
|
|
|
if (!hCryptProv)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
if (pszPublicKeyObjId)
|
|
exportFunc = CRYPT_GetFunc(dwCertEncodingType, pszPublicKeyObjId,
|
|
CRYPT_OID_EXPORT_PUBLIC_KEY_INFO_FUNC, &lib);
|
|
if (!exportFunc)
|
|
exportFunc = CRYPT_ExportRsaPublicKeyInfoEx;
|
|
ret = exportFunc(hCryptProv, dwKeySpec, dwCertEncodingType,
|
|
pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptImportPublicKeyInfo(HCRYPTPROV hCryptProv,
|
|
DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, HCRYPTKEY *phKey)
|
|
{
|
|
return CryptImportPublicKeyInfoEx(hCryptProv, dwCertEncodingType, pInfo,
|
|
0, 0, NULL, phKey);
|
|
}
|
|
|
|
static BOOL WINAPI CRYPT_ImportRsaPublicKeyInfoEx(HCRYPTPROV hCryptProv,
|
|
DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg,
|
|
DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey)
|
|
{
|
|
BOOL ret;
|
|
DWORD pubKeySize = 0;
|
|
|
|
TRACE("(%ld, %ld, %p, %d, %08lx, %p, %p)\n", hCryptProv,
|
|
dwCertEncodingType, pInfo, aiKeyAlg, dwFlags, pvAuxInfo, phKey);
|
|
|
|
ret = CryptDecodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB,
|
|
pInfo->PublicKey.pbData, pInfo->PublicKey.cbData, 0, NULL, &pubKeySize);
|
|
if (ret)
|
|
{
|
|
LPBYTE pubKey = CryptMemAlloc(pubKeySize);
|
|
|
|
if (pubKey)
|
|
{
|
|
ret = CryptDecodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB,
|
|
pInfo->PublicKey.pbData, pInfo->PublicKey.cbData, 0, pubKey,
|
|
&pubKeySize);
|
|
if (ret)
|
|
ret = CryptImportKey(hCryptProv, pubKey, pubKeySize, 0, 0,
|
|
phKey);
|
|
CryptMemFree(pubKey);
|
|
}
|
|
else
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
typedef BOOL (WINAPI *ImportPublicKeyInfoExFunc)(HCRYPTPROV hCryptProv,
|
|
DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg,
|
|
DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey);
|
|
|
|
BOOL WINAPI CryptImportPublicKeyInfoEx(HCRYPTPROV hCryptProv,
|
|
DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg,
|
|
DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey)
|
|
{
|
|
BOOL ret;
|
|
ImportPublicKeyInfoExFunc importFunc = NULL;
|
|
HMODULE lib = NULL;
|
|
|
|
TRACE("(%ld, %ld, %p, %d, %08lx, %p, %p)\n", hCryptProv,
|
|
dwCertEncodingType, pInfo, aiKeyAlg, dwFlags, pvAuxInfo, phKey);
|
|
|
|
importFunc = CRYPT_GetFunc(dwCertEncodingType, pInfo->Algorithm.pszObjId,
|
|
CRYPT_OID_IMPORT_PUBLIC_KEY_INFO_FUNC, &lib);
|
|
if (!importFunc)
|
|
importFunc = CRYPT_ImportRsaPublicKeyInfoEx;
|
|
ret = importFunc(hCryptProv, dwCertEncodingType, pInfo, aiKeyAlg, dwFlags,
|
|
pvAuxInfo, phKey);
|
|
if (lib)
|
|
FreeLibrary(lib);
|
|
return ret;
|
|
}
|