[331] | 1 | /*
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| 2 | * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include "internal/cryptlib.h"
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| 11 | #include <openssl/asn1t.h>
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| 12 | #include <openssl/pem.h>
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| 13 | #include <openssl/x509v3.h>
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| 14 | #include <openssl/err.h>
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| 15 | #include <openssl/cms.h>
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| 16 | #include <openssl/bio.h>
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| 17 | #include <openssl/comp.h>
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| 18 | #include "cms_lcl.h"
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| 19 |
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| 20 | #ifdef ZLIB
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| 21 |
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| 22 | /* CMS CompressedData Utilities */
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| 23 |
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| 24 | CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
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| 25 | {
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| 26 | CMS_ContentInfo *cms;
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| 27 | CMS_CompressedData *cd;
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| 28 | /*
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| 29 | * Will need something cleverer if there is ever more than one
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| 30 | * compression algorithm or parameters have some meaning...
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| 31 | */
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| 32 | if (comp_nid != NID_zlib_compression) {
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| 33 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
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| 34 | CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
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| 35 | return NULL;
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| 36 | }
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| 37 | cms = CMS_ContentInfo_new();
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| 38 | if (cms == NULL)
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| 39 | return NULL;
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| 40 |
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| 41 | cd = M_ASN1_new_of(CMS_CompressedData);
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| 42 |
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| 43 | if (cd == NULL)
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| 44 | goto err;
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| 45 |
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| 46 | cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
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| 47 | cms->d.compressedData = cd;
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| 48 |
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| 49 | cd->version = 0;
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| 50 |
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| 51 | X509_ALGOR_set0(cd->compressionAlgorithm,
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| 52 | OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
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| 53 |
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| 54 | cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
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| 55 |
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| 56 | return cms;
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| 57 |
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| 58 | err:
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| 59 | CMS_ContentInfo_free(cms);
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| 60 | return NULL;
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| 61 | }
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| 62 |
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| 63 | BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
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| 64 | {
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| 65 | CMS_CompressedData *cd;
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| 66 | const ASN1_OBJECT *compoid;
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| 67 | if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
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| 68 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
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| 69 | CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
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| 70 | return NULL;
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| 71 | }
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| 72 | cd = cms->d.compressedData;
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| 73 | X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
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| 74 | if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
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| 75 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
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| 76 | CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
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| 77 | return NULL;
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| 78 | }
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| 79 | return BIO_new(BIO_f_zlib());
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| 80 | }
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| 81 |
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| 82 | #endif
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