yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the OpenSSL license (the "License"). You may not use |
| 5 | * this file except in compliance with the License. You can obtain a copy |
| 6 | * in the file LICENSE in the source distribution or at |
| 7 | * https://www.openssl.org/source/license.html |
| 8 | */ |
| 9 | |
| 10 | #include "internal/cryptlib.h" |
| 11 | #include <openssl/asn1t.h> |
| 12 | #include <openssl/pem.h> |
| 13 | #include <openssl/x509v3.h> |
| 14 | #include <openssl/err.h> |
| 15 | #include <openssl/cms.h> |
| 16 | #include <openssl/bio.h> |
| 17 | #include <openssl/comp.h> |
| 18 | #include "cms_local.h" |
| 19 | |
| 20 | #ifdef ZLIB |
| 21 | |
| 22 | /* CMS CompressedData Utilities */ |
| 23 | |
| 24 | CMS_ContentInfo *cms_CompressedData_create(int comp_nid) |
| 25 | { |
| 26 | CMS_ContentInfo *cms; |
| 27 | CMS_CompressedData *cd; |
| 28 | /* |
| 29 | * Will need something cleverer if there is ever more than one |
| 30 | * compression algorithm or parameters have some meaning... |
| 31 | */ |
| 32 | if (comp_nid != NID_zlib_compression) { |
| 33 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE, |
| 34 | CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| 35 | return NULL; |
| 36 | } |
| 37 | cms = CMS_ContentInfo_new(); |
| 38 | if (cms == NULL) |
| 39 | return NULL; |
| 40 | |
| 41 | cd = M_ASN1_new_of(CMS_CompressedData); |
| 42 | |
| 43 | if (cd == NULL) |
| 44 | goto err; |
| 45 | |
| 46 | cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData); |
| 47 | cms->d.compressedData = cd; |
| 48 | |
| 49 | cd->version = 0; |
| 50 | |
| 51 | X509_ALGOR_set0(cd->compressionAlgorithm, |
| 52 | OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL); |
| 53 | |
| 54 | cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); |
| 55 | |
| 56 | return cms; |
| 57 | |
| 58 | err: |
| 59 | CMS_ContentInfo_free(cms); |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms) |
| 64 | { |
| 65 | CMS_CompressedData *cd; |
| 66 | const ASN1_OBJECT *compoid; |
| 67 | if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) { |
| 68 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, |
| 69 | CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA); |
| 70 | return NULL; |
| 71 | } |
| 72 | cd = cms->d.compressedData; |
| 73 | X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm); |
| 74 | if (OBJ_obj2nid(compoid) != NID_zlib_compression) { |
| 75 | CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, |
| 76 | CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| 77 | return NULL; |
| 78 | } |
| 79 | return BIO_new(BIO_f_zlib()); |
| 80 | } |
| 81 | |
| 82 | #endif |