lib/libcrypto/ts/ts_verify_ctx.c

   1 /* $OpenBSD: ts_verify_ctx.c,v 1.9 2017/01/29 17:49:23 beck Exp $ */
   2 /* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL
   3  * project 2003.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <string.h>
  60
  61 #include <openssl/err.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/ts.h>
  64
  65 TS_VERIFY_CTX *
  66 TS_VERIFY_CTX_new(void)
  67 {
  68         TS_VERIFY_CTX *ctx = calloc(1, sizeof(TS_VERIFY_CTX));
  69
  70         if (!ctx)
  71                 TSerror(ERR_R_MALLOC_FAILURE);
  72
  73         return ctx;
  74 }
  75
  76 void
  77 TS_VERIFY_CTX_init(TS_VERIFY_CTX *ctx)
  78 {
  79         memset(ctx, 0, sizeof(TS_VERIFY_CTX));
  80 }
  81
  82 void
  83 TS_VERIFY_CTX_free(TS_VERIFY_CTX *ctx)
  84 {
  85         if (!ctx)
  86                 return;
  87
  88         TS_VERIFY_CTX_cleanup(ctx);
  89         free(ctx);
  90 }
  91
  92 void
  93 TS_VERIFY_CTX_cleanup(TS_VERIFY_CTX *ctx)
  94 {
  95         if (!ctx)
  96                 return;
  97
  98         X509_STORE_free(ctx->store);
  99         sk_X509_pop_free(ctx->certs, X509_free);
 100
 101         ASN1_OBJECT_free(ctx->policy);
 102
 103         X509_ALGOR_free(ctx->md_alg);
 104         free(ctx->imprint);
 105
 106         BIO_free_all(ctx->data);
 107
 108         ASN1_INTEGER_free(ctx->nonce);
 109
 110         GENERAL_NAME_free(ctx->tsa_name);
 111
 112         TS_VERIFY_CTX_init(ctx);
 113 }
 114
 115 TS_VERIFY_CTX *
 116 TS_REQ_to_TS_VERIFY_CTX(TS_REQ *req, TS_VERIFY_CTX *ctx)
 117 {
 118         TS_VERIFY_CTX *ret = ctx;
 119         ASN1_OBJECT *policy;
 120         TS_MSG_IMPRINT *imprint;
 121         X509_ALGOR *md_alg;
 122         ASN1_OCTET_STRING *msg;
 123         const ASN1_INTEGER *nonce;
 124
 125         if (ret)
 126                 TS_VERIFY_CTX_cleanup(ret);
 127         else if (!(ret = TS_VERIFY_CTX_new()))
 128                 return NULL;
 129
 130         /* Setting flags. */
 131         ret->flags = TS_VFY_ALL_IMPRINT & ~(TS_VFY_TSA_NAME | TS_VFY_SIGNATURE);
 132
 133         /* Setting policy. */
 134         if ((policy = TS_REQ_get_policy_id(req)) != NULL) {
 135                 if (!(ret->policy = OBJ_dup(policy)))
 136                         goto err;
 137         } else
 138                 ret->flags &= ~TS_VFY_POLICY;
 139
 140         /* Setting md_alg, imprint and imprint_len. */
 141         imprint = TS_REQ_get_msg_imprint(req);
 142         md_alg = TS_MSG_IMPRINT_get_algo(imprint);
 143         if (!(ret->md_alg = X509_ALGOR_dup(md_alg)))
 144                 goto err;
 145         msg = TS_MSG_IMPRINT_get_msg(imprint);
 146         ret->imprint_len = ASN1_STRING_length(msg);
 147         if (!(ret->imprint = malloc(ret->imprint_len)))
 148                 goto err;
 149         memcpy(ret->imprint, ASN1_STRING_data(msg), ret->imprint_len);
 150
 151         /* Setting nonce. */
 152         if ((nonce = TS_REQ_get_nonce(req)) != NULL) {
 153                 if (!(ret->nonce = ASN1_INTEGER_dup(nonce)))
 154                         goto err;
 155         } else
 156                 ret->flags &= ~TS_VFY_NONCE;
 157
 158         return ret;
 159
 160 err:
 161         if (ctx)
 162                 TS_VERIFY_CTX_cleanup(ctx);
 163         else
 164                 TS_VERIFY_CTX_free(ret);
 165         return NULL;
 166 }