mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
295 lines
8.0 KiB
C
295 lines
8.0 KiB
C
/* crypto/asn1/p7_lib.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>
|
|
#include <openssl/objects.h>
|
|
|
|
int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
|
|
{
|
|
M_ASN1_I2D_vars(a);
|
|
|
|
if (a->asn1 != NULL)
|
|
{
|
|
if (pp == NULL)
|
|
return((int)a->length);
|
|
memcpy(*pp,a->asn1,(int)a->length);
|
|
*pp+=a->length;
|
|
return((int)a->length);
|
|
}
|
|
|
|
ret+=4; /* sequence, BER header plus '0 0' end padding */
|
|
M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
|
|
if (a->d.ptr != NULL)
|
|
{
|
|
ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
|
|
switch (OBJ_obj2nid(a->type))
|
|
{
|
|
case NID_pkcs7_data:
|
|
M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
|
|
break;
|
|
case NID_pkcs7_signed:
|
|
M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
M_ASN1_I2D_len(a->d.signed_and_enveloped,
|
|
i2d_PKCS7_SIGN_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_digest:
|
|
M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
|
|
break;
|
|
case NID_pkcs7_encrypted:
|
|
M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
r=ret;
|
|
if (pp == NULL) return(r);
|
|
p= *pp;
|
|
M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
|
|
M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
|
|
|
|
if (a->d.ptr != NULL)
|
|
{
|
|
M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
|
|
switch (OBJ_obj2nid(a->type))
|
|
{
|
|
case NID_pkcs7_data:
|
|
M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
|
|
break;
|
|
case NID_pkcs7_signed:
|
|
M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
M_ASN1_I2D_put(a->d.signed_and_enveloped,
|
|
i2d_PKCS7_SIGN_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_digest:
|
|
M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
|
|
break;
|
|
case NID_pkcs7_encrypted:
|
|
M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
M_ASN1_I2D_INF_seq_end();
|
|
}
|
|
M_ASN1_I2D_INF_seq_end();
|
|
M_ASN1_I2D_finish();
|
|
}
|
|
|
|
PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
|
|
{
|
|
M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);
|
|
|
|
if ((a != NULL) && ((*a) != NULL))
|
|
{
|
|
if ((*a)->asn1 != NULL)
|
|
{
|
|
Free((char *)(*a)->asn1);
|
|
(*a)->asn1=NULL;
|
|
}
|
|
(*a)->length=0;
|
|
}
|
|
|
|
M_ASN1_D2I_Init();
|
|
M_ASN1_D2I_start_sequence();
|
|
M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
|
|
if (!M_ASN1_D2I_end_sequence())
|
|
{
|
|
int Tinf,Ttag,Tclass;
|
|
long Tlen;
|
|
|
|
if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
|
|
V_ASN1_CONTEXT_SPECIFIC|0))
|
|
{
|
|
c.error=ASN1_R_BAD_PKCS7_CONTENT;
|
|
c.line=__LINE__;
|
|
goto err;
|
|
}
|
|
|
|
ret->detached=0;
|
|
|
|
c.q=c.p;
|
|
Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
|
|
(c.inf & 1)?(length+ *pp-c.q):c.slen);
|
|
if (Tinf & 0x80) { c.line=__LINE__; goto err; }
|
|
c.slen-=(c.p-c.q);
|
|
|
|
switch (OBJ_obj2nid(ret->type))
|
|
{
|
|
case NID_pkcs7_data:
|
|
M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
|
|
break;
|
|
case NID_pkcs7_signed:
|
|
M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
|
|
if (ret->d.sign->contents->d.ptr == NULL)
|
|
ret->detached=1;
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
M_ASN1_D2I_get(ret->d.signed_and_enveloped,
|
|
d2i_PKCS7_SIGN_ENVELOPE);
|
|
break;
|
|
case NID_pkcs7_digest:
|
|
M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
|
|
break;
|
|
case NID_pkcs7_encrypted:
|
|
M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
|
|
break;
|
|
default:
|
|
c.error=ASN1_R_BAD_PKCS7_TYPE;
|
|
c.line=__LINE__;
|
|
goto err;
|
|
/* break; */
|
|
}
|
|
if (Tinf == (1|V_ASN1_CONSTRUCTED))
|
|
{
|
|
if (!ASN1_check_infinite_end(&c.p,c.slen))
|
|
{
|
|
c.error=ERR_R_MISSING_ASN1_EOS;
|
|
c.line=__LINE__;
|
|
goto err;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
ret->detached=1;
|
|
|
|
M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
|
|
}
|
|
|
|
PKCS7 *PKCS7_new(void)
|
|
{
|
|
PKCS7 *ret=NULL;
|
|
ASN1_CTX c;
|
|
|
|
M_ASN1_New_Malloc(ret,PKCS7);
|
|
ret->type=OBJ_nid2obj(NID_undef);
|
|
ret->asn1=NULL;
|
|
ret->length=0;
|
|
ret->detached=0;
|
|
ret->d.ptr=NULL;
|
|
return(ret);
|
|
M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
|
|
}
|
|
|
|
void PKCS7_free(PKCS7 *a)
|
|
{
|
|
if (a == NULL) return;
|
|
|
|
PKCS7_content_free(a);
|
|
if (a->type != NULL)
|
|
{
|
|
ASN1_OBJECT_free(a->type);
|
|
}
|
|
Free((char *)(char *)a);
|
|
}
|
|
|
|
void PKCS7_content_free(PKCS7 *a)
|
|
{
|
|
if(a == NULL)
|
|
return;
|
|
|
|
if (a->asn1 != NULL) Free((char *)a->asn1);
|
|
|
|
if (a->d.ptr != NULL)
|
|
{
|
|
if (a->type == NULL) return;
|
|
|
|
switch (OBJ_obj2nid(a->type))
|
|
{
|
|
case NID_pkcs7_data:
|
|
ASN1_OCTET_STRING_free(a->d.data);
|
|
break;
|
|
case NID_pkcs7_signed:
|
|
PKCS7_SIGNED_free(a->d.sign);
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
PKCS7_ENVELOPE_free(a->d.enveloped);
|
|
break;
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
|
|
break;
|
|
case NID_pkcs7_digest:
|
|
PKCS7_DIGEST_free(a->d.digest);
|
|
break;
|
|
case NID_pkcs7_encrypted:
|
|
PKCS7_ENCRYPT_free(a->d.encrypted);
|
|
break;
|
|
default:
|
|
/* MEMORY LEAK */
|
|
break;
|
|
}
|
|
}
|
|
a->d.ptr=NULL;
|
|
}
|
|
|