ref: 4410517b44fd2610abe0dcd1349bb3e6b3c5ddb8
dir: /sys/src/ape/lib/openssl/crypto/asn1/a_set.c/
/* crypto/asn1/a_set.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected]).
*
* 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 ([email protected])"
* 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 ([email protected])"
*
* 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 *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_num(a)-1; i>=0; i--)
ret+=i2d(sk_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 [email protected] */
/* And then again by Ben */
/* And again by Steve */
if(!is_set || (sk_num(a) < 2))
{
for (i=0; i<sk_num(a); i++)
i2d(sk_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 = (MYBLOB *)OPENSSL_malloc(sk_num(a) * sizeof(MYBLOB));
if (rgSetBlob == NULL)
{
ASN1err(ASN1_F_I2D_ASN1_SET,ERR_R_MALLOC_FAILURE);
return(0);
}
for (i=0; i<sk_num(a); i++)
{
rgSetBlob[i].pbData = p; /* catch each set encode blob */
i2d(sk_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_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_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 *d2i_ASN1_SET(STACK **a, const unsigned char **pp, long length,
d2i_of_void *d2i, void (*free_func)(void *), int ex_tag,
int ex_class)
{
ASN1_const_CTX c;
STACK *ret=NULL;
if ((a == NULL) || ((*a) == NULL))
{
if ((ret=sk_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.q- *pp));
goto err;
}
if (!sk_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_pop_free(ret,free_func);
else
sk_free(ret);
}
return(NULL);
}
#endif