/* pk7_mime.c */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project. */ /* ==================================================================== * Copyright (c) 1999-2005 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 <stdio.h> #include <ctype.h> #include "cryptlib.h" #include <openssl/rand.h> #include <openssl/x509.h> #include <openssl/asn1.h> /* PKCS#7 wrappers round generalised MIME routines */ PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont) { return (PKCS7 *)SMIME_read_ASN1(bio, bcont, ASN1_ITEM_rptr(PKCS7)); } /* Callback for int_smime_write_ASN1 */ static int pk7_output_data(BIO *out, BIO *data, ASN1_VALUE *val, int flags, const ASN1_ITEM *it) { PKCS7 *p7 = (PKCS7 *)val; BIO *tmpbio, *p7bio; if (!(flags & SMIME_DETACHED)) { SMIME_crlf_copy(data, out, flags); return 1; } /* Let PKCS7 code prepend any needed BIOs */ p7bio = PKCS7_dataInit(p7, out); if (!p7bio) return 0; /* Copy data across, passing through filter BIOs for processing */ SMIME_crlf_copy(data, p7bio, flags); /* Finalize structure */ if (PKCS7_dataFinal(p7, p7bio) <= 0) goto err; err: /* Now remove any digests prepended to the BIO */ while (p7bio != out) { tmpbio = BIO_pop(p7bio); BIO_free(p7bio); p7bio = tmpbio; } return 1; } int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags) { STACK_OF(X509_ALGOR) *mdalgs; int ctype_nid = OBJ_obj2nid(p7->type); if (ctype_nid == NID_pkcs7_signed) mdalgs = p7->d.sign->md_algs; else mdalgs = NULL; return int_smime_write_ASN1(bio, (ASN1_VALUE *)p7, data, flags, ctype_nid, NID_undef, mdalgs, pk7_output_data, ASN1_ITEM_rptr(PKCS7)); }