1998-12-21 18:52:47 +08:00
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/* crypto/asn1/asn1_lib.c */
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1998-12-21 18:56:39 +08:00
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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1998-12-21 18:52:47 +08:00
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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2015-01-22 11:40:55 +08:00
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*
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1998-12-21 18:52:47 +08:00
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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2015-01-22 11:40:55 +08:00
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*
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1998-12-21 18:52:47 +08:00
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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2015-01-22 11:40:55 +08:00
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*
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1998-12-21 18:52:47 +08:00
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
|
2015-01-22 11:40:55 +08:00
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* 4. If you include any Windows specific code (or a derivative thereof) from
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1998-12-21 18:52:47 +08:00
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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2015-01-22 11:40:55 +08:00
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*
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1998-12-21 18:52:47 +08:00
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2015-01-22 11:40:55 +08:00
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*
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1998-12-21 18:52:47 +08:00
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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2002-08-03 02:48:55 +08:00
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#include <limits.h>
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2015-05-14 22:56:48 +08:00
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#include "internal/cryptlib.h"
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1999-04-24 06:13:45 +08:00
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#include <openssl/asn1.h>
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1998-12-21 18:52:47 +08:00
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2015-01-22 11:40:55 +08:00
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static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
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int max);
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1998-12-21 18:52:47 +08:00
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static void asn1_put_length(unsigned char **pp, int length);
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2004-03-16 07:15:26 +08:00
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static int _asn1_check_infinite_end(const unsigned char **p, long len)
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2015-01-22 11:40:55 +08:00
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{
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/*
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* If there is 0 or 1 byte left, the length check should pick things up
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*/
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if (len <= 0)
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return (1);
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else if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0)) {
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(*p) += 2;
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return (1);
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}
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return (0);
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}
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1998-12-21 18:52:47 +08:00
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2008-11-12 11:58:08 +08:00
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int ASN1_check_infinite_end(unsigned char **p, long len)
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2015-01-22 11:40:55 +08:00
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{
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return _asn1_check_infinite_end((const unsigned char **)p, len);
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}
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1998-12-21 18:52:47 +08:00
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2008-11-12 11:58:08 +08:00
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int ASN1_const_check_infinite_end(const unsigned char **p, long len)
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2015-01-22 11:40:55 +08:00
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{
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return _asn1_check_infinite_end(p, len);
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}
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2004-03-16 07:15:26 +08:00
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2008-11-12 11:58:08 +08:00
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int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
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2015-01-22 11:40:55 +08:00
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int *pclass, long omax)
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{
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int i, ret;
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long l;
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const unsigned char *p = *pp;
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int tag, xclass, inf;
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long max = omax;
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if (!max)
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goto err;
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ret = (*p & V_ASN1_CONSTRUCTED);
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xclass = (*p & V_ASN1_PRIVATE);
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i = *p & V_ASN1_PRIMITIVE_TAG;
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if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
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p++;
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if (--max == 0)
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goto err;
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l = 0;
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while (*p & 0x80) {
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l <<= 7L;
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l |= *(p++) & 0x7f;
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if (--max == 0)
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goto err;
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if (l > (INT_MAX >> 7L))
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goto err;
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}
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l <<= 7L;
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l |= *(p++) & 0x7f;
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tag = (int)l;
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if (--max == 0)
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goto err;
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} else {
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tag = i;
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p++;
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if (--max == 0)
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goto err;
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}
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*ptag = tag;
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*pclass = xclass;
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if (!asn1_get_length(&p, &inf, plength, (int)max))
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goto err;
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if (inf && !(ret & V_ASN1_CONSTRUCTED))
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goto err;
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2014-07-02 07:57:57 +08:00
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2015-01-22 11:40:55 +08:00
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if (*plength > (omax - (p - *pp))) {
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ASN1err(ASN1_F_ASN1_GET_OBJECT, ASN1_R_TOO_LONG);
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/*
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* Set this so that even if things are not long enough the values are
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* set correctly
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*/
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ret |= 0x80;
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}
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*pp = p;
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return (ret | inf);
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err:
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ASN1err(ASN1_F_ASN1_GET_OBJECT, ASN1_R_HEADER_TOO_LONG);
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return (0x80);
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}
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static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
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int max)
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{
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const unsigned char *p = *pp;
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unsigned long ret = 0;
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unsigned int i;
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if (max-- < 1)
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return (0);
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if (*p == 0x80) {
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*inf = 1;
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ret = 0;
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p++;
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} else {
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*inf = 0;
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i = *p & 0x7f;
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if (*(p++) & 0x80) {
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if (max < (int)i)
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return 0;
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/* Skip leading zeroes */
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while (i && *p == 0) {
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p++;
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i--;
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}
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if (i > sizeof(long))
|
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return 0;
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while (i-- > 0) {
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ret <<= 8L;
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ret |= *(p++);
|
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}
|
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} else
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ret = i;
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|
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}
|
|
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if (ret > LONG_MAX)
|
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return 0;
|
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*pp = p;
|
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*rl = (long)ret;
|
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|
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return (1);
|
|
|
|
}
|
|
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|
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|
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/*
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* class 0 is constructed constructed == 2 for indefinite length constructed
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*/
|
2008-11-12 11:58:08 +08:00
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void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
|
2015-01-22 11:40:55 +08:00
|
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|
int xclass)
|
|
|
|
{
|
|
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|
unsigned char *p = *pp;
|
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|
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int i, ttag;
|
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|
|
|
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i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
|
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|
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i |= (xclass & V_ASN1_PRIVATE);
|
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|
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if (tag < 31)
|
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|
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*(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
|
|
|
|
else {
|
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|
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*(p++) = i | V_ASN1_PRIMITIVE_TAG;
|
|
|
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for (i = 0, ttag = tag; ttag > 0; i++)
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|
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ttag >>= 7;
|
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ttag = i;
|
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|
|
while (i-- > 0) {
|
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|
|
p[i] = tag & 0x7f;
|
|
|
|
if (i != (ttag - 1))
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|
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p[i] |= 0x80;
|
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|
|
tag >>= 7;
|
|
|
|
}
|
|
|
|
p += ttag;
|
|
|
|
}
|
|
|
|
if (constructed == 2)
|
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|
|
*(p++) = 0x80;
|
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|
|
else
|
|
|
|
asn1_put_length(&p, length);
|
|
|
|
*pp = p;
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2002-10-03 20:38:52 +08:00
|
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|
int ASN1_put_eoc(unsigned char **pp)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
unsigned char *p = *pp;
|
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|
|
*p++ = 0;
|
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|
|
*p++ = 0;
|
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|
|
*pp = p;
|
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|
|
return 2;
|
|
|
|
}
|
2002-10-03 20:38:52 +08:00
|
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|
|
1999-04-20 05:31:43 +08:00
|
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|
static void asn1_put_length(unsigned char **pp, int length)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
unsigned char *p = *pp;
|
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|
|
int i, l;
|
|
|
|
if (length <= 127)
|
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|
|
*(p++) = (unsigned char)length;
|
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|
|
else {
|
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|
|
l = length;
|
|
|
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for (i = 0; l > 0; i++)
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|
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l >>= 8;
|
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|
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*(p++) = i | 0x80;
|
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|
|
l = i;
|
|
|
|
while (i-- > 0) {
|
|
|
|
p[i] = length & 0xff;
|
|
|
|
length >>= 8;
|
|
|
|
}
|
|
|
|
p += l;
|
|
|
|
}
|
|
|
|
*pp = p;
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2008-11-12 11:58:08 +08:00
|
|
|
int ASN1_object_size(int constructed, int length, int tag)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = length;
|
|
|
|
ret++;
|
|
|
|
if (tag >= 31) {
|
|
|
|
while (tag > 0) {
|
|
|
|
tag >>= 7;
|
|
|
|
ret++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (constructed == 2)
|
|
|
|
return ret + 3;
|
|
|
|
ret++;
|
|
|
|
if (length > 127) {
|
|
|
|
while (length > 0) {
|
|
|
|
length >>= 8;
|
|
|
|
ret++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (ret);
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2007-04-15 01:53:55 +08:00
|
|
|
int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
if (str == NULL)
|
|
|
|
return 0;
|
|
|
|
dst->type = str->type;
|
|
|
|
if (!ASN1_STRING_set(dst, str->data, str->length))
|
|
|
|
return 0;
|
2015-10-12 06:25:08 +08:00
|
|
|
/* Copy flags but preserve embed value */
|
|
|
|
dst->flags &= ASN1_STRING_FLAG_EMBED;
|
|
|
|
dst->flags |= str->flags & ~ASN1_STRING_FLAG_EMBED;
|
2015-01-22 11:40:55 +08:00
|
|
|
return 1;
|
|
|
|
}
|
2007-04-15 01:53:55 +08:00
|
|
|
|
2006-03-04 21:55:02 +08:00
|
|
|
ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
ASN1_STRING *ret;
|
|
|
|
if (!str)
|
|
|
|
return NULL;
|
|
|
|
ret = ASN1_STRING_new();
|
2015-10-30 19:12:26 +08:00
|
|
|
if (ret == NULL)
|
2015-01-22 11:40:55 +08:00
|
|
|
return NULL;
|
|
|
|
if (!ASN1_STRING_copy(ret, str)) {
|
|
|
|
ASN1_STRING_free(ret);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2008-11-12 11:58:08 +08:00
|
|
|
int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
unsigned char *c;
|
|
|
|
const char *data = _data;
|
|
|
|
|
|
|
|
if (len < 0) {
|
|
|
|
if (data == NULL)
|
|
|
|
return (0);
|
|
|
|
else
|
|
|
|
len = strlen(data);
|
|
|
|
}
|
|
|
|
if ((str->length < len) || (str->data == NULL)) {
|
|
|
|
c = str->data;
|
2015-04-29 04:34:52 +08:00
|
|
|
str->data = OPENSSL_realloc(c, len + 1);
|
2015-01-22 11:40:55 +08:00
|
|
|
if (str->data == NULL) {
|
|
|
|
ASN1err(ASN1_F_ASN1_STRING_SET, ERR_R_MALLOC_FAILURE);
|
|
|
|
str->data = c;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
str->length = len;
|
|
|
|
if (data != NULL) {
|
|
|
|
memcpy(str->data, data, len);
|
|
|
|
/* an allowance for strings :-) */
|
|
|
|
str->data[len] = '\0';
|
|
|
|
}
|
|
|
|
return (1);
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2008-11-12 11:58:08 +08:00
|
|
|
void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
2015-05-01 22:02:07 +08:00
|
|
|
OPENSSL_free(str->data);
|
2015-01-22 11:40:55 +08:00
|
|
|
str->data = data;
|
|
|
|
str->length = len;
|
|
|
|
}
|
2006-05-08 20:44:25 +08:00
|
|
|
|
1999-04-20 05:31:43 +08:00
|
|
|
ASN1_STRING *ASN1_STRING_new(void)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
return (ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
1999-04-20 05:31:43 +08:00
|
|
|
ASN1_STRING *ASN1_STRING_type_new(int type)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
ASN1_STRING *ret;
|
|
|
|
|
2015-09-03 21:15:26 +08:00
|
|
|
ret = OPENSSL_zalloc(sizeof(*ret));
|
2015-01-22 11:40:55 +08:00
|
|
|
if (ret == NULL) {
|
|
|
|
ASN1err(ASN1_F_ASN1_STRING_TYPE_NEW, ERR_R_MALLOC_FAILURE);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
ret->type = type;
|
|
|
|
return (ret);
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
1999-04-20 05:31:43 +08:00
|
|
|
void ASN1_STRING_free(ASN1_STRING *a)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
if (a == NULL)
|
|
|
|
return;
|
2015-05-01 22:02:07 +08:00
|
|
|
if (!(a->flags & ASN1_STRING_FLAG_NDEF))
|
2015-01-22 11:40:55 +08:00
|
|
|
OPENSSL_free(a->data);
|
2015-10-07 20:28:46 +08:00
|
|
|
if (!(a->flags & ASN1_STRING_FLAG_EMBED))
|
|
|
|
OPENSSL_free(a);
|
2015-01-22 11:40:55 +08:00
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2015-03-03 22:20:23 +08:00
|
|
|
void ASN1_STRING_clear_free(ASN1_STRING *a)
|
|
|
|
{
|
2015-03-24 19:52:24 +08:00
|
|
|
if (a == NULL)
|
|
|
|
return;
|
|
|
|
if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
|
2015-03-03 22:20:23 +08:00
|
|
|
OPENSSL_cleanse(a->data, a->length);
|
|
|
|
ASN1_STRING_free(a);
|
|
|
|
}
|
|
|
|
|
2006-03-04 21:55:02 +08:00
|
|
|
int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
i = (a->length - b->length);
|
|
|
|
if (i == 0) {
|
|
|
|
i = memcmp(a->data, b->data, a->length);
|
|
|
|
if (i == 0)
|
|
|
|
return (a->type - b->type);
|
|
|
|
else
|
|
|
|
return (i);
|
|
|
|
} else
|
|
|
|
return (i);
|
|
|
|
}
|
1998-12-21 18:52:47 +08:00
|
|
|
|
2008-11-12 11:58:08 +08:00
|
|
|
int ASN1_STRING_length(const ASN1_STRING *x)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
2015-03-14 12:16:42 +08:00
|
|
|
return x->length;
|
2015-01-22 11:40:55 +08:00
|
|
|
}
|
1999-10-20 09:50:23 +08:00
|
|
|
|
2008-11-12 11:58:08 +08:00
|
|
|
void ASN1_STRING_length_set(ASN1_STRING *x, int len)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
2015-03-14 12:16:42 +08:00
|
|
|
x->length = len;
|
2015-01-22 11:40:55 +08:00
|
|
|
}
|
1999-10-20 09:50:23 +08:00
|
|
|
|
|
|
|
int ASN1_STRING_type(ASN1_STRING *x)
|
2015-01-22 11:40:55 +08:00
|
|
|
{
|
2015-03-14 12:16:42 +08:00
|
|
|
return x->type;
|
2015-01-22 11:40:55 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
unsigned char *ASN1_STRING_data(ASN1_STRING *x)
|
|
|
|
{
|
2015-03-14 12:16:42 +08:00
|
|
|
return x->data;
|
2015-01-22 11:40:55 +08:00
|
|
|
}
|