ipsec-tools/racoon/dnssec.c

   1 /*      $KAME: dnssec.c,v 1.2 2001/08/05 18:46:07 itojun Exp $  */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include "config.h"
  33
  34 #include <sys/types.h>
  35 #include <sys/param.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38
  39 #include "var.h"
  40 #include "vmbuf.h"
  41 #include "misc.h"
  42 #include "plog.h"
  43 #include "debug.h"
  44
  45 #include "isakmp_var.h"
  46 #include "isakmp.h"
  47 #include "ipsec_doi.h"
  48 #include "oakley.h"
  49 #include "netdb_dnssec.h"
  50 #include "strnames.h"
  51 #include "dnssec.h"
  52 #include "gcmalloc.h"
  53
  54 extern int h_errno;
  55
  56 cert_t *
  57 dnssec_getcert(id)
  58         vchar_t *id;
  59 {
  60         cert_t *cert = NULL;
  61         struct certinfo *res = NULL;
  62         struct ipsecdoi_id_b *id_b;
  63         int type;
  64         char *name = NULL;
  65         int namelen;
  66         int error;
  67
  68         id_b = (struct ipsecdoi_id_b *)id->v;
  69
  70         namelen = id->l - sizeof(*id_b);
  71         name = racoon_malloc(namelen + 1);
  72         if (!name) {
  73                 plog(LLV_ERROR, LOCATION, NULL,
  74                         "failed to get buffer.\n");
  75                 return NULL;
  76         }
  77         memcpy(name, id_b + 1, namelen);
  78         name[namelen] = '\0';
  79
  80         switch (id_b->type) {
  81         case IPSECDOI_ID_FQDN:
  82                 error = getcertsbyname(name, &res);
  83                 if (error != 0) {
  84                         plog(LLV_ERROR, LOCATION, NULL,
  85                                 "getcertsbyname(\"%s\") failed.\n", name);
  86                         goto err;
  87                 }
  88                 break;
  89         case IPSECDOI_ID_IPV4_ADDR:
  90         case IPSECDOI_ID_IPV6_ADDR:
  91                 /* XXX should be processed to query PTR ? */
  92         default:
  93                 plog(LLV_ERROR, LOCATION, NULL,
  94                         "impropper ID type passed %s "
  95                         "though getcert method is dnssec.\n",
  96                         s_ipsecdoi_ident(id_b->type));
  97                 return NULL;
  98         }
  99
 100         /* check response */
 101         if (res->ci_next != NULL) {
 102                 plog(LLV_WARNING, LOCATION, NULL,
 103                         "not supported multiple CERT RR.\n");
 104         }
 105         switch (res->ci_type) {
 106         case DNSSEC_TYPE_PKIX:
 107                 /* XXX is it enough condition to set this type ? */
 108                 type = ISAKMP_CERT_X509SIGN;
 109                 break;
 110         default:
 111                 plog(LLV_ERROR, LOCATION, NULL,
 112                         "not supported CERT RR type %d.\n", res->ci_type);
 113                 goto err;
 114         }
 115
 116         /* create cert holder */
 117         cert = oakley_newcert();
 118         if (cert == NULL) {
 119                 plog(LLV_ERROR, LOCATION, NULL,
 120                         "failed to get cert buffer.\n");
 121                 goto err;
 122         }
 123         cert->pl = vmalloc(res->ci_certlen + 1);
 124         if (cert->pl == NULL) {
 125                 plog(LLV_ERROR, LOCATION, NULL,
 126                         "failed to get cert buffer.\n");
 127                 goto err;
 128         }
 129         memcpy(cert->pl->v + 1, res->ci_cert, res->ci_certlen);
 130         cert->pl->v[0] = type;
 131         cert->cert.v = cert->pl->v + 1;
 132         cert->cert.l = cert->pl->l - 1;
 133
 134         plog(LLV_DEBUG, LOCATION, NULL, "created CERT payload:\n");
 135         plogdump(LLV_DEBUG, cert->pl->v, cert->pl->l);
 136
 137 end:
 138         if (res)
 139                 freecertinfo(res);
 140
 141         return cert;
 142
 143 err:
 144         if (name)
 145                 racoon_free(name);
 146         if (cert)
 147                 oakley_delcert(cert);
 148         goto end;
 149 }