cert.c revision 1.12 
1/*	$OpenBSD: cert.c,v 1.12 2000/02/19 19:32:53 niklas Exp $	*/
2/*	$EOM: cert.c,v 1.14 2000/02/19 07:58:54 niklas Exp $	*/
3
4/*
5 * Copyright (c) 1998, 1999 Niels Provos.  All rights reserved.
6 * Copyright (c) 1999, 2000 Niklas Hallqvist.  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 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Ericsson Radio Systems.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/*
35 * This code was written under funding by Ericsson Radio Systems.
36 */
37
38#include <sys/param.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42
43#include <ssl/ssl.h>
44
45#include "sysdep.h"
46
47#include "cert.h"
48#include "isakmp_num.h"
49#include "log.h"
50#include "x509.h"
51
52struct cert_handler cert_handler[] = {
53#ifdef USE_X509
54  {
55    ISAKMP_CERTENC_X509_SIG,
56    x509_cert_init, x509_cert_get, x509_cert_validate,
57    x509_cert_insert, x509_cert_free,
58    x509_certreq_validate, x509_certreq_decode, x509_free_aca,
59    x509_cert_obtain, x509_cert_get_key, x509_cert_get_subject
60  }
61#endif
62};
63
64/* Initialize all certificate handlers */
65
66int
67cert_init (void)
68{
69  int i, err = 1;
70
71  for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
72    if (cert_handler[i].cert_init && !(*cert_handler[i].cert_init) ())
73      err = 0;
74
75  return err;
76}
77
78struct cert_handler *
79cert_get (u_int16_t id)
80{
81  int i;
82
83  for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
84    if (id == cert_handler[i].id)
85      return &cert_handler[i];
86  return 0;
87}
88
89/* Decode a CERTREQ and return a parsed structure.  */
90struct certreq_aca *
91certreq_decode (u_int16_t type, u_int8_t *data, u_int32_t datalen)
92{
93  struct cert_handler *handler;
94  struct certreq_aca aca, *ret;
95
96  handler = cert_get (type);
97  if (!handler)
98    return 0;
99
100  aca.id = type;
101  aca.handler = handler;
102
103  if (datalen > 0)
104    {
105      aca.data = handler->certreq_decode (data, datalen);
106      if (!aca.data)
107	return 0;
108    }
109  else
110    aca.data = 0;
111
112  ret = malloc (sizeof aca);
113  if (!ret)
114    {
115      log_error ("certreq_decode: malloc (%d) failed", sizeof aca);
116      handler->free_aca (aca.data);
117      return 0;
118    }
119
120  memcpy (ret, &aca, sizeof aca);
121
122  return ret;
123}
124