diff options
Diffstat (limited to 'crypto/cms/cms_cd.c')
| -rw-r--r-- | crypto/cms/cms_cd.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/crypto/cms/cms_cd.c b/crypto/cms/cms_cd.c new file mode 100644 index 0000000..a5fc2c4 --- /dev/null +++ b/crypto/cms/cms_cd.c @@ -0,0 +1,134 @@ +/* crypto/cms/cms_cd.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project. + */ +/* ==================================================================== + * Copyright (c) 2008 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + */ + +#include "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_lcl.h" + +DECLARE_ASN1_ITEM(CMS_CompressedData) + +#ifdef ZLIB + +/* CMS CompressedData Utilities */ + +CMS_ContentInfo *cms_CompressedData_create(int comp_nid) + { + 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) + { + CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE, + CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); + return NULL; + } + cms = CMS_ContentInfo_new(); + if (!cms) + return NULL; + + cd = M_ASN1_new_of(CMS_CompressedData); + + if (!cd) + goto err; + + cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData); + cms->d.compressedData = cd; + + cd->version = 0; + + X509_ALGOR_set0(cd->compressionAlgorithm, + OBJ_nid2obj(NID_zlib_compression), + V_ASN1_UNDEF, NULL); + + cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); + + return cms; + + err: + + if (cms) + CMS_ContentInfo_free(cms); + + return NULL; + } + +BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms) + { + CMS_CompressedData *cd; + ASN1_OBJECT *compoid; + if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) + { + CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, + 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) + { + CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, + CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); + return NULL; + } + return BIO_new(BIO_f_zlib()); + } + +#endif |
