83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
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/*
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* Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "internal/cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/pem.h>
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#include <openssl/x509v3.h>
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#include <openssl/err.h>
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#include <openssl/cms.h>
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#include <openssl/bio.h>
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#include <openssl/comp.h>
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#include "cms_local.h"
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#ifdef ZLIB
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/* CMS CompressedData Utilities */
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CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
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{
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CMS_ContentInfo *cms;
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CMS_CompressedData *cd;
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/*
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* Will need something cleverer if there is ever more than one
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* compression algorithm or parameters have some meaning...
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*/
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if (comp_nid != NID_zlib_compression) {
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CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
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CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
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return NULL;
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}
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cms = CMS_ContentInfo_new();
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if (cms == NULL)
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return NULL;
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cd = M_ASN1_new_of(CMS_CompressedData);
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if (cd == NULL)
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goto err;
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cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
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cms->d.compressedData = cd;
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cd->version = 0;
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X509_ALGOR_set0(cd->compressionAlgorithm,
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OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
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cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
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return cms;
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err:
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CMS_ContentInfo_free(cms);
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return NULL;
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}
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BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
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{
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CMS_CompressedData *cd;
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const ASN1_OBJECT *compoid;
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if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
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CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
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CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
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return NULL;
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}
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cd = cms->d.compressedData;
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X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
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if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
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CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
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CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
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return NULL;
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}
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return BIO_new(BIO_f_zlib());
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}
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#endif
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