cert.c revision 1.2 
1/*	$OpenBSD: cert.c,v 1.2 1998/11/15 00:43:50 niklas Exp $	*/
2
3/*
4 * Copyright (c) 1998 Niels Provos.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Ericsson Radio Systems.
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * This code was written under funding by Ericsson Radio Systems.
34 */
35
36#include <sys/param.h>
37#include <stdlib.h>
38#include <string.h>
39
40#include "cert.h"
41#include "isakmp_num.h"
42#include "x509.h"
43
44struct cert_handler cert_handler[] = {
45    {ISAKMP_CERTENC_X509_SIG,
46     x509_certreq_validate, x509_certreq_decode, x509_free_aca,
47     x509_cert_obtain, x509_cert_get_key, x509_cert_get_subject}
48};
49
50struct cert_handler *
51cert_get (u_int16_t id)
52{
53  int i;
54
55  for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
56    if (id == cert_handler[i].id)
57      return &cert_handler[i];
58  return NULL;
59}
60
61
62/* Decode a CERTREQ and return a parsed structure */
63
64struct certreq_aca *
65certreq_decode (u_int16_t type, u_int8_t *data, u_int32_t datalen)
66{
67  struct cert_handler *handler;
68  struct certreq_aca aca, *ret;
69
70  if ((handler = cert_get (type)) == NULL)
71    return NULL;
72
73  aca.id = type;
74  aca.handler = handler;
75
76  if (datalen > 0)
77    {
78      aca.data = handler->certreq_decode (data, datalen);
79      if (aca.data == NULL)
80	return NULL;
81    }
82  else
83    aca.data = NULL;
84
85  if ((ret = malloc (sizeof (aca))) == NULL)
86    {
87      handler->free_aca (aca.data);
88      return NULL;
89    }
90
91  memcpy (ret, &aca, sizeof (aca));
92
93  return ret;
94}
95