623 lines
15 KiB
C
623 lines
15 KiB
C
/* crypto/cms/cms_lib.c */
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2008 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* 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 above 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 acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED 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 OpenSSL PROJECT OR
|
|
* ITS 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.
|
|
* ====================================================================
|
|
*/
|
|
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/bio.h>
|
|
#include <openssl/asn1.h>
|
|
#include "cms.h"
|
|
#include "cms_lcl.h"
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(CMS_ContentInfo)
|
|
IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
|
|
|
|
DECLARE_ASN1_ITEM(CMS_CertificateChoices)
|
|
DECLARE_ASN1_ITEM(CMS_RevocationInfoChoice)
|
|
DECLARE_STACK_OF(CMS_CertificateChoices)
|
|
DECLARE_STACK_OF(CMS_RevocationInfoChoice)
|
|
|
|
const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms)
|
|
{
|
|
return cms->contentType;
|
|
}
|
|
|
|
CMS_ContentInfo *cms_Data_create(void)
|
|
{
|
|
CMS_ContentInfo *cms;
|
|
cms = CMS_ContentInfo_new();
|
|
if (cms)
|
|
{
|
|
cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
|
|
/* Never detached */
|
|
CMS_set_detached(cms, 0);
|
|
}
|
|
return cms;
|
|
}
|
|
|
|
BIO *cms_content_bio(CMS_ContentInfo *cms)
|
|
{
|
|
ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
|
|
if (!pos)
|
|
return NULL;
|
|
/* If content detached data goes nowhere: create NULL BIO */
|
|
if (!*pos)
|
|
return BIO_new(BIO_s_null());
|
|
/* If content not detached and created return memory BIO
|
|
*/
|
|
if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
|
|
return BIO_new(BIO_s_mem());
|
|
/* Else content was read in: return read only BIO for it */
|
|
return BIO_new_mem_buf((*pos)->data, (*pos)->length);
|
|
}
|
|
|
|
BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
|
|
{
|
|
BIO *cmsbio, *cont;
|
|
if (icont)
|
|
cont = icont;
|
|
else
|
|
cont = cms_content_bio(cms);
|
|
if (!cont)
|
|
{
|
|
CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
|
|
return NULL;
|
|
}
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_data:
|
|
return cont;
|
|
|
|
case NID_pkcs7_signed:
|
|
cmsbio = cms_SignedData_init_bio(cms);
|
|
break;
|
|
|
|
case NID_pkcs7_digest:
|
|
cmsbio = cms_DigestedData_init_bio(cms);
|
|
break;
|
|
#ifdef ZLIB
|
|
case NID_id_smime_ct_compressedData:
|
|
cmsbio = cms_CompressedData_init_bio(cms);
|
|
break;
|
|
#endif
|
|
|
|
case NID_pkcs7_encrypted:
|
|
cmsbio = cms_EncryptedData_init_bio(cms);
|
|
break;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
cmsbio = cms_EnvelopedData_init_bio(cms);
|
|
break;
|
|
|
|
default:
|
|
CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
|
|
return NULL;
|
|
}
|
|
|
|
if (cmsbio)
|
|
return BIO_push(cmsbio, cont);
|
|
|
|
if (!icont)
|
|
BIO_free(cont);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
|
|
{
|
|
ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
|
|
if (!pos)
|
|
return 0;
|
|
/* If ebmedded content find memory BIO and set content */
|
|
if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT))
|
|
{
|
|
BIO *mbio;
|
|
unsigned char *cont;
|
|
long contlen;
|
|
mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
|
|
if (!mbio)
|
|
{
|
|
CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
|
|
return 0;
|
|
}
|
|
contlen = BIO_get_mem_data(mbio, &cont);
|
|
/* Set bio as read only so its content can't be clobbered */
|
|
BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
|
|
BIO_set_mem_eof_return(mbio, 0);
|
|
ASN1_STRING_set0(*pos, cont, contlen);
|
|
(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
|
|
}
|
|
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_data:
|
|
case NID_pkcs7_enveloped:
|
|
case NID_pkcs7_encrypted:
|
|
case NID_id_smime_ct_compressedData:
|
|
/* Nothing to do */
|
|
return 1;
|
|
|
|
case NID_pkcs7_signed:
|
|
return cms_SignedData_final(cms, cmsbio);
|
|
|
|
case NID_pkcs7_digest:
|
|
return cms_DigestedData_do_final(cms, cmsbio, 0);
|
|
|
|
default:
|
|
CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Return an OCTET STRING pointer to content. This allows it to
|
|
* be accessed or set later.
|
|
*/
|
|
|
|
ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
|
|
{
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_data:
|
|
return &cms->d.data;
|
|
|
|
case NID_pkcs7_signed:
|
|
return &cms->d.signedData->encapContentInfo->eContent;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
|
|
|
|
case NID_pkcs7_digest:
|
|
return &cms->d.digestedData->encapContentInfo->eContent;
|
|
|
|
case NID_pkcs7_encrypted:
|
|
return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
|
|
|
|
case NID_id_smime_ct_authData:
|
|
return &cms->d.authenticatedData->encapContentInfo->eContent;
|
|
|
|
case NID_id_smime_ct_compressedData:
|
|
return &cms->d.compressedData->encapContentInfo->eContent;
|
|
|
|
default:
|
|
if (cms->d.other->type == V_ASN1_OCTET_STRING)
|
|
return &cms->d.other->value.octet_string;
|
|
CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
|
|
return NULL;
|
|
|
|
}
|
|
}
|
|
|
|
/* Return an ASN1_OBJECT pointer to content type. This allows it to
|
|
* be accessed or set later.
|
|
*/
|
|
|
|
static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
|
|
{
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_signed:
|
|
return &cms->d.signedData->encapContentInfo->eContentType;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
return &cms->d.envelopedData->encryptedContentInfo->contentType;
|
|
|
|
case NID_pkcs7_digest:
|
|
return &cms->d.digestedData->encapContentInfo->eContentType;
|
|
|
|
case NID_pkcs7_encrypted:
|
|
return &cms->d.encryptedData->encryptedContentInfo->contentType;
|
|
|
|
case NID_id_smime_ct_authData:
|
|
return &cms->d.authenticatedData->encapContentInfo->eContentType;
|
|
|
|
case NID_id_smime_ct_compressedData:
|
|
return &cms->d.compressedData->encapContentInfo->eContentType;
|
|
|
|
default:
|
|
CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE,
|
|
CMS_R_UNSUPPORTED_CONTENT_TYPE);
|
|
return NULL;
|
|
|
|
}
|
|
}
|
|
|
|
const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
|
|
{
|
|
ASN1_OBJECT **petype;
|
|
petype = cms_get0_econtent_type(cms);
|
|
if (petype)
|
|
return *petype;
|
|
return NULL;
|
|
}
|
|
|
|
int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
|
|
{
|
|
ASN1_OBJECT **petype, *etype;
|
|
petype = cms_get0_econtent_type(cms);
|
|
if (!petype)
|
|
return 0;
|
|
if (!oid)
|
|
return 1;
|
|
etype = OBJ_dup(oid);
|
|
if (!etype)
|
|
return 0;
|
|
ASN1_OBJECT_free(*petype);
|
|
*petype = etype;
|
|
return 1;
|
|
}
|
|
|
|
int CMS_is_detached(CMS_ContentInfo *cms)
|
|
{
|
|
ASN1_OCTET_STRING **pos;
|
|
pos = CMS_get0_content(cms);
|
|
if (!pos)
|
|
return -1;
|
|
if (*pos)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int CMS_set_detached(CMS_ContentInfo *cms, int detached)
|
|
{
|
|
ASN1_OCTET_STRING **pos;
|
|
pos = CMS_get0_content(cms);
|
|
if (!pos)
|
|
return 0;
|
|
if (detached)
|
|
{
|
|
if (*pos)
|
|
{
|
|
ASN1_OCTET_STRING_free(*pos);
|
|
*pos = NULL;
|
|
}
|
|
return 1;
|
|
}
|
|
if (!*pos)
|
|
*pos = ASN1_OCTET_STRING_new();
|
|
if (*pos)
|
|
{
|
|
/* NB: special flag to show content is created and not
|
|
* read in.
|
|
*/
|
|
(*pos)->flags |= ASN1_STRING_FLAG_CONT;
|
|
return 1;
|
|
}
|
|
CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
/* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
|
|
|
|
void cms_DigestAlgorithm_set(X509_ALGOR *alg, const EVP_MD *md)
|
|
{
|
|
int param_type;
|
|
|
|
if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT)
|
|
param_type = V_ASN1_UNDEF;
|
|
else
|
|
param_type = V_ASN1_NULL;
|
|
|
|
X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
|
|
|
|
}
|
|
|
|
/* Create a digest BIO from an X509_ALGOR structure */
|
|
|
|
BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
|
|
{
|
|
BIO *mdbio = NULL;
|
|
ASN1_OBJECT *digestoid;
|
|
const EVP_MD *digest;
|
|
X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
|
|
digest = EVP_get_digestbyobj(digestoid);
|
|
if (!digest)
|
|
{
|
|
CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
|
|
CMS_R_UNKNOWN_DIGEST_ALGORIHM);
|
|
goto err;
|
|
}
|
|
mdbio = BIO_new(BIO_f_md());
|
|
if (!mdbio || !BIO_set_md(mdbio, digest))
|
|
{
|
|
CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
|
|
CMS_R_MD_BIO_INIT_ERROR);
|
|
goto err;
|
|
}
|
|
return mdbio;
|
|
err:
|
|
if (mdbio)
|
|
BIO_free(mdbio);
|
|
return NULL;
|
|
}
|
|
|
|
/* Locate a message digest content from a BIO chain based on SignerInfo */
|
|
|
|
int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
|
|
X509_ALGOR *mdalg)
|
|
{
|
|
int nid;
|
|
ASN1_OBJECT *mdoid;
|
|
X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
|
|
nid = OBJ_obj2nid(mdoid);
|
|
/* Look for digest type to match signature */
|
|
for (;;)
|
|
{
|
|
EVP_MD_CTX *mtmp;
|
|
chain = BIO_find_type(chain, BIO_TYPE_MD);
|
|
if (chain == NULL)
|
|
{
|
|
CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
|
|
CMS_R_NO_MATCHING_DIGEST);
|
|
return 0;
|
|
}
|
|
BIO_get_md_ctx(chain, &mtmp);
|
|
if (EVP_MD_CTX_type(mtmp) == nid
|
|
/* Workaround for broken implementations that use signature
|
|
* algorithm OID instead of digest.
|
|
*/
|
|
|| EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
|
|
return EVP_MD_CTX_copy_ex(mctx, mtmp);
|
|
chain = BIO_next(chain);
|
|
}
|
|
}
|
|
|
|
static STACK_OF(CMS_CertificateChoices) **cms_get0_certificate_choices(CMS_ContentInfo *cms)
|
|
{
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_signed:
|
|
return &cms->d.signedData->certificates;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
return &cms->d.envelopedData->originatorInfo->certificates;
|
|
|
|
default:
|
|
CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
|
|
CMS_R_UNSUPPORTED_CONTENT_TYPE);
|
|
return NULL;
|
|
|
|
}
|
|
}
|
|
|
|
CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
|
|
{
|
|
STACK_OF(CMS_CertificateChoices) **pcerts;
|
|
CMS_CertificateChoices *cch;
|
|
pcerts = cms_get0_certificate_choices(cms);
|
|
if (!pcerts)
|
|
return NULL;
|
|
if (!*pcerts)
|
|
*pcerts = sk_CMS_CertificateChoices_new_null();
|
|
if (!*pcerts)
|
|
return NULL;
|
|
cch = M_ASN1_new_of(CMS_CertificateChoices);
|
|
if (!cch)
|
|
return NULL;
|
|
if (!sk_CMS_CertificateChoices_push(*pcerts, cch))
|
|
{
|
|
M_ASN1_free_of(cch, CMS_CertificateChoices);
|
|
return NULL;
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
|
|
{
|
|
CMS_CertificateChoices *cch;
|
|
STACK_OF(CMS_CertificateChoices) **pcerts;
|
|
int i;
|
|
pcerts = cms_get0_certificate_choices(cms);
|
|
if (!pcerts)
|
|
return 0;
|
|
for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++)
|
|
{
|
|
cch = sk_CMS_CertificateChoices_value(*pcerts, i);
|
|
if (cch->type == CMS_CERTCHOICE_CERT)
|
|
{
|
|
if (!X509_cmp(cch->d.certificate, cert))
|
|
{
|
|
CMSerr(CMS_F_CMS_ADD0_CERT,
|
|
CMS_R_CERTIFICATE_ALREADY_PRESENT);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
cch = CMS_add0_CertificateChoices(cms);
|
|
if (!cch)
|
|
return 0;
|
|
cch->type = CMS_CERTCHOICE_CERT;
|
|
cch->d.certificate = cert;
|
|
return 1;
|
|
}
|
|
|
|
int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
|
|
{
|
|
int r;
|
|
r = CMS_add0_cert(cms, cert);
|
|
if (r > 0)
|
|
CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
|
|
return r;
|
|
}
|
|
|
|
static STACK_OF(CMS_RevocationInfoChoice) **cms_get0_revocation_choices(CMS_ContentInfo *cms)
|
|
{
|
|
switch (OBJ_obj2nid(cms->contentType))
|
|
{
|
|
|
|
case NID_pkcs7_signed:
|
|
return &cms->d.signedData->crls;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
return &cms->d.envelopedData->originatorInfo->crls;
|
|
|
|
default:
|
|
CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
|
|
CMS_R_UNSUPPORTED_CONTENT_TYPE);
|
|
return NULL;
|
|
|
|
}
|
|
}
|
|
|
|
CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
|
|
{
|
|
STACK_OF(CMS_RevocationInfoChoice) **pcrls;
|
|
CMS_RevocationInfoChoice *rch;
|
|
pcrls = cms_get0_revocation_choices(cms);
|
|
if (!pcrls)
|
|
return NULL;
|
|
if (!*pcrls)
|
|
*pcrls = sk_CMS_RevocationInfoChoice_new_null();
|
|
if (!*pcrls)
|
|
return NULL;
|
|
rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
|
|
if (!rch)
|
|
return NULL;
|
|
if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch))
|
|
{
|
|
M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
|
|
return NULL;
|
|
}
|
|
return rch;
|
|
}
|
|
|
|
int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
|
|
{
|
|
CMS_RevocationInfoChoice *rch;
|
|
rch = CMS_add0_RevocationInfoChoice(cms);
|
|
if (!rch)
|
|
return 0;
|
|
rch->type = CMS_REVCHOICE_CRL;
|
|
rch->d.crl = crl;
|
|
return 1;
|
|
}
|
|
|
|
int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
|
|
{
|
|
int r;
|
|
r = CMS_add0_crl(cms, crl);
|
|
if (r > 0)
|
|
CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
|
|
return r;
|
|
}
|
|
|
|
STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
|
|
{
|
|
STACK_OF(X509) *certs = NULL;
|
|
CMS_CertificateChoices *cch;
|
|
STACK_OF(CMS_CertificateChoices) **pcerts;
|
|
int i;
|
|
pcerts = cms_get0_certificate_choices(cms);
|
|
if (!pcerts)
|
|
return NULL;
|
|
for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++)
|
|
{
|
|
cch = sk_CMS_CertificateChoices_value(*pcerts, i);
|
|
if (cch->type == 0)
|
|
{
|
|
if (!certs)
|
|
{
|
|
certs = sk_X509_new_null();
|
|
if (!certs)
|
|
return NULL;
|
|
}
|
|
if (!sk_X509_push(certs, cch->d.certificate))
|
|
{
|
|
sk_X509_pop_free(certs, X509_free);
|
|
return NULL;
|
|
}
|
|
CRYPTO_add(&cch->d.certificate->references,
|
|
1, CRYPTO_LOCK_X509);
|
|
}
|
|
}
|
|
return certs;
|
|
|
|
}
|
|
|
|
STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
|
|
{
|
|
STACK_OF(X509_CRL) *crls = NULL;
|
|
STACK_OF(CMS_RevocationInfoChoice) **pcrls;
|
|
CMS_RevocationInfoChoice *rch;
|
|
int i;
|
|
pcrls = cms_get0_revocation_choices(cms);
|
|
if (!pcrls)
|
|
return NULL;
|
|
for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++)
|
|
{
|
|
rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
|
|
if (rch->type == 0)
|
|
{
|
|
if (!crls)
|
|
{
|
|
crls = sk_X509_CRL_new_null();
|
|
if (!crls)
|
|
return NULL;
|
|
}
|
|
if (!sk_X509_CRL_push(crls, rch->d.crl))
|
|
{
|
|
sk_X509_CRL_pop_free(crls, X509_CRL_free);
|
|
return NULL;
|
|
}
|
|
CRYPTO_add(&rch->d.crl->references,
|
|
1, CRYPTO_LOCK_X509_CRL);
|
|
}
|
|
}
|
|
return crls;
|
|
}
|