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2017-02-25 23:55:24 +01:00
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openssl-1.0.2f/crypto/asn1/a_set.c Normal file
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/* crypto/asn1/a_set.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1_mac.h>
#ifndef NO_ASN1_OLD
typedef struct {
unsigned char *pbData;
int cbData;
} MYBLOB;
/*
* SetBlobCmp This function compares two elements of SET_OF block
*/
static int SetBlobCmp(const void *elem1, const void *elem2)
{
const MYBLOB *b1 = (const MYBLOB *)elem1;
const MYBLOB *b2 = (const MYBLOB *)elem2;
int r;
r = memcmp(b1->pbData, b2->pbData,
b1->cbData < b2->cbData ? b1->cbData : b2->cbData);
if (r != 0)
return r;
return b1->cbData - b2->cbData;
}
/*
* int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE)
*/
int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a, unsigned char **pp,
i2d_of_void *i2d, int ex_tag, int ex_class, int is_set)
{
int ret = 0, r;
int i;
unsigned char *p;
unsigned char *pStart, *pTempMem;
MYBLOB *rgSetBlob;
int totSize;
if (a == NULL)
return (0);
for (i = sk_OPENSSL_BLOCK_num(a) - 1; i >= 0; i--)
ret += i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
r = ASN1_object_size(1, ret, ex_tag);
if (pp == NULL)
return (r);
p = *pp;
ASN1_put_object(&p, 1, ret, ex_tag, ex_class);
/* Modified by gp@nsj.co.jp */
/* And then again by Ben */
/* And again by Steve */
if (!is_set || (sk_OPENSSL_BLOCK_num(a) < 2)) {
for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++)
i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
*pp = p;
return (r);
}
pStart = p; /* Catch the beg of Setblobs */
/* In this array we will store the SET blobs */
rgSetBlob = OPENSSL_malloc(sk_OPENSSL_BLOCK_num(a) * sizeof(MYBLOB));
if (rgSetBlob == NULL) {
ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
return (0);
}
for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) {
rgSetBlob[i].pbData = p; /* catch each set encode blob */
i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; /* Length of this
* SetBlob */
}
*pp = p;
totSize = p - pStart; /* This is the total size of all set blobs */
/*
* Now we have to sort the blobs. I am using a simple algo. *Sort ptrs
* *Copy to temp-mem *Copy from temp-mem to user-mem
*/
qsort(rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp);
if (!(pTempMem = OPENSSL_malloc(totSize))) {
ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
return (0);
}
/* Copy to temp mem */
p = pTempMem;
for (i = 0; i < sk_OPENSSL_BLOCK_num(a); ++i) {
memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData);
p += rgSetBlob[i].cbData;
}
/* Copy back to user mem*/
memcpy(pStart, pTempMem, totSize);
OPENSSL_free(pTempMem);
OPENSSL_free(rgSetBlob);
return (r);
}
STACK_OF(OPENSSL_BLOCK) *d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) **a,
const unsigned char **pp,
long length, d2i_of_void *d2i,
void (*free_func) (OPENSSL_BLOCK),
int ex_tag, int ex_class)
{
ASN1_const_CTX c;
STACK_OF(OPENSSL_BLOCK) *ret = NULL;
if ((a == NULL) || ((*a) == NULL)) {
if ((ret = sk_OPENSSL_BLOCK_new_null()) == NULL) {
ASN1err(ASN1_F_D2I_ASN1_SET, ERR_R_MALLOC_FAILURE);
goto err;
}
} else
ret = (*a);
c.p = *pp;
c.max = (length == 0) ? 0 : (c.p + length);
c.inf = ASN1_get_object(&c.p, &c.slen, &c.tag, &c.xclass, c.max - c.p);
if (c.inf & 0x80)
goto err;
if (ex_class != c.xclass) {
ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_CLASS);
goto err;
}
if (ex_tag != c.tag) {
ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_TAG);
goto err;
}
if ((c.slen + c.p) > c.max) {
ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_LENGTH_ERROR);
goto err;
}
/*
* check for infinite constructed - it can be as long as the amount of
* data passed to us
*/
if (c.inf == (V_ASN1_CONSTRUCTED + 1))
c.slen = length + *pp - c.p;
c.max = c.p + c.slen;
while (c.p < c.max) {
char *s;
if (M_ASN1_D2I_end_sequence())
break;
/*
* XXX: This was called with 4 arguments, incorrectly, it seems if
* ((s=func(NULL,&c.p,c.slen,c.max-c.p)) == NULL)
*/
if ((s = d2i(NULL, &c.p, c.slen)) == NULL) {
ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_ERROR_PARSING_SET_ELEMENT);
asn1_add_error(*pp, (int)(c.p - *pp));
goto err;
}
if (!sk_OPENSSL_BLOCK_push(ret, s))
goto err;
}
if (a != NULL)
(*a) = ret;
*pp = c.p;
return (ret);
err:
if ((ret != NULL) && ((a == NULL) || (*a != ret))) {
if (free_func != NULL)
sk_OPENSSL_BLOCK_pop_free(ret, free_func);
else
sk_OPENSSL_BLOCK_free(ret);
}
return (NULL);
}
#endif