128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/* pk7_mime.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project.
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*/
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/* ====================================================================
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* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "cryptlib.h"
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#include <openssl/rand.h>
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#include <openssl/x509.h>
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#include <openssl/asn1.h>
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/* PKCS#7 wrappers round generalised MIME routines */
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PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont)
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{
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return (PKCS7 *)SMIME_read_ASN1(bio, bcont, ASN1_ITEM_rptr(PKCS7));
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}
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/* Callback for int_smime_write_ASN1 */
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static int pk7_output_data(BIO *out, BIO *data, ASN1_VALUE *val, int flags,
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const ASN1_ITEM *it)
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{
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PKCS7 *p7 = (PKCS7 *)val;
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BIO *tmpbio, *p7bio;
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int r = 0;
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if (!(flags & SMIME_DETACHED))
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{
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SMIME_crlf_copy(data, out, flags);
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return 1;
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}
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/* Let PKCS7 code prepend any needed BIOs */
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p7bio = PKCS7_dataInit(p7, out);
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if (!p7bio)
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return 0;
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/* Copy data across, passing through filter BIOs for processing */
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SMIME_crlf_copy(data, p7bio, flags);
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/* Finalize structure */
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if (PKCS7_dataFinal(p7, p7bio) <= 0)
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goto err;
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r = 1;
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err:
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/* Now remove any digests prepended to the BIO */
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while (p7bio != out)
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{
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tmpbio = BIO_pop(p7bio);
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BIO_free(p7bio);
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p7bio = tmpbio;
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}
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return 1;
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}
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int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
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{
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STACK_OF(X509_ALGOR) *mdalgs;
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int ctype_nid = OBJ_obj2nid(p7->type);
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if (ctype_nid == NID_pkcs7_signed)
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mdalgs = p7->d.sign->md_algs;
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else
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mdalgs = NULL;
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return int_smime_write_ASN1(bio, (ASN1_VALUE *)p7, data, flags,
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ctype_nid, NID_undef, mdalgs,
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pk7_output_data,
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ASN1_ITEM_rptr(PKCS7));
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}
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