| /* |
| * Copyright 2008-2021 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 "internal/cryptlib.h" |
| #include <openssl/asn1t.h> |
| #include <openssl/pem.h> |
| #include <openssl/x509v3.h> |
| #include <openssl/err.h> |
| #include <openssl/cms.h> |
| #include <openssl/bio.h> |
| #include <openssl/comp.h> |
| #include "cms_local.h" |
| |
| #ifdef ZLIB |
| |
| /* CMS CompressedData Utilities */ |
| |
| CMS_ContentInfo *ossl_cms_CompressedData_create(int comp_nid, |
| OSSL_LIB_CTX *libctx, |
| const char *propq) |
| { |
| CMS_ContentInfo *cms; |
| CMS_CompressedData *cd; |
| |
| /* |
| * Will need something cleverer if there is ever more than one |
| * compression algorithm or parameters have some meaning... |
| */ |
| if (comp_nid != NID_zlib_compression) { |
| ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| return NULL; |
| } |
| cms = CMS_ContentInfo_new_ex(libctx, propq); |
| if (cms == NULL) |
| return NULL; |
| |
| cd = M_ASN1_new_of(CMS_CompressedData); |
| |
| if (cd == NULL) |
| goto err; |
| |
| cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData); |
| cms->d.compressedData = cd; |
| |
| cd->version = 0; |
| |
| (void)X509_ALGOR_set0(cd->compressionAlgorithm, |
| OBJ_nid2obj(NID_zlib_compression), |
| V_ASN1_UNDEF, NULL); /* cannot fail */ |
| |
| cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); |
| |
| return cms; |
| |
| err: |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| BIO *ossl_cms_CompressedData_init_bio(const CMS_ContentInfo *cms) |
| { |
| CMS_CompressedData *cd; |
| const ASN1_OBJECT *compoid; |
| |
| if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) { |
| ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA); |
| return NULL; |
| } |
| cd = cms->d.compressedData; |
| X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm); |
| if (OBJ_obj2nid(compoid) != NID_zlib_compression) { |
| ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| return NULL; |
| } |
| return BIO_new(BIO_f_zlib()); |
| } |
| |
| #endif |