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/*
* Copyright 2008-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/cms.h>
#include "cms_local.h"
/* unfortunately cannot constify BIO_new_NDEF() due to this and PKCS7_stream() */
int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
{
ASN1_OCTET_STRING **pos;
pos = CMS_get0_content(cms);
if (pos == NULL)
return 0;
if (*pos == NULL)
*pos = ASN1_OCTET_STRING_new();
if (*pos != NULL) {
(*pos)->flags |= ASN1_STRING_FLAG_NDEF;
(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
*boundary = &(*pos)->data;
return 1;
}
ERR_raise(ERR_LIB_CMS, ERR_R_CMS_LIB);
return 0;
}
CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
{
CMS_ContentInfo *ci;
const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms == NULL ? NULL : *cms);
ci = ASN1_item_d2i_bio_ex(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms,
ossl_cms_ctx_get0_libctx(ctx),
ossl_cms_ctx_get0_propq(ctx));
if (ci != NULL) {
ERR_set_mark();
ossl_cms_resolve_libctx(ci);
ERR_pop_to_mark();
}
return ci;
}
int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
{
return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
}
IMPLEMENT_PEM_rw(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo)
BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
{
return BIO_new_NDEF(out, (ASN1_VALUE *)cms,
ASN1_ITEM_rptr(CMS_ContentInfo));
}
/* CMS wrappers round generalised stream and MIME routines */
int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
{
return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
ASN1_ITEM_rptr(CMS_ContentInfo));
}
int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in,
int flags)
{
return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
"CMS", ASN1_ITEM_rptr(CMS_ContentInfo));
}
int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
{
STACK_OF(X509_ALGOR) *mdalgs;
int ctype_nid = OBJ_obj2nid(cms->contentType);
int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
if (ctype_nid == NID_pkcs7_signed)
mdalgs = cms->d.signedData->digestAlgorithms;
else
mdalgs = NULL;
return SMIME_write_ASN1_ex(bio, (ASN1_VALUE *)cms, data, flags, ctype_nid,
econt_nid, mdalgs,
ASN1_ITEM_rptr(CMS_ContentInfo),
ossl_cms_ctx_get0_libctx(ctx),
ossl_cms_ctx_get0_propq(ctx));
}
CMS_ContentInfo *SMIME_read_CMS_ex(BIO *bio, int flags, BIO **bcont,
CMS_ContentInfo **cms)
{
CMS_ContentInfo *ci;
const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms == NULL ? NULL : *cms);
ci = (CMS_ContentInfo *)SMIME_read_ASN1_ex(bio, flags, bcont,
ASN1_ITEM_rptr(CMS_ContentInfo),
(ASN1_VALUE **)cms,
ossl_cms_ctx_get0_libctx(ctx),
ossl_cms_ctx_get0_propq(ctx));
if (ci != NULL) {
ERR_set_mark();
ossl_cms_resolve_libctx(ci);
ERR_pop_to_mark();
}
return ci;
}
CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont)
{
return SMIME_read_CMS_ex(bio, 0, bcont, NULL);
}
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