racoon.tproj/dnssec.c

   1 /*      $KAME: dnssec.c,v 1.1 2001/04/11 06:11:55 sakane 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 <sys/types.h>
  33 #include <sys/param.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 #include "var.h"
  38 #include "vmbuf.h"
  39 #include "misc.h"
  40 #include "plog.h"
  41 #include "debug.h"
  42
  43 #include "isakmp_var.h"
  44 #include "isakmp.h"
  45 #include "ipsec_doi.h"
  46 #include "oakley.h"
  47 #include "netdb_dnssec.h"
  48 #include "strnames.h"
  49 #include "dnssec.h"
  50 #include "gcmalloc.h"
  51
  52 extern int h_errno;
  53
  54 cert_t *
  55 dnssec_getcert(id)
  56         vchar_t *id;
  57 {
  58         cert_t *cert = NULL;
  59         struct certinfo *res = NULL;
  60         struct ipsecdoi_id_b *id_b;
  61         int type;
  62         char *name = NULL;
  63         int namelen;
  64         int error;
  65
  66         id_b = (struct ipsecdoi_id_b *)id->v;
  67
  68         namelen = id->l - sizeof(*id_b);
  69         name = racoon_malloc(namelen + 1);
  70         if (!name) {
  71                 plog(LLV_ERROR, LOCATION, NULL,
  72                         "failed to get buffer.\n");
  73                 return NULL;
  74         }
  75         memcpy(name, id_b + 1, namelen);
  76         name[namelen] = '\0';
  77
  78         switch (id_b->type) {
  79         case IPSECDOI_ID_FQDN:
  80                 error = getcertsbyname(name, &res);
  81                 if (error != 0) {
  82                         plog(LLV_ERROR, LOCATION, NULL,
  83                                 "getcertsbyname(\"%s\") failed.\n", name);
  84                         goto err;
  85                 }
  86                 break;
  87         case IPSECDOI_ID_IPV4_ADDR:
  88         case IPSECDOI_ID_IPV6_ADDR:
  89                 /* XXX should be processed to query PTR ? */
  90         default:
  91                 plog(LLV_ERROR, LOCATION, NULL,
  92                         "inpropper ID type passed %s "
  93                         "though getcert method is dnssec.\n",
  94                         s_ipsecdoi_ident(id_b->type));
  95                 return NULL;
  96         }
  97
  98         /* check response */
  99         if (res->ci_next == NULL) {
 100                 plog(LLV_WARNING, LOCATION, NULL,
 101                         "not supported multiple CERT RR.\n");
 102         }
 103         switch (res->ci_type) {
 104         case DNSSEC_TYPE_PKIX:
 105                 /* XXX is it enough condition to set this type ? */
 106                 type = ISAKMP_CERT_X509SIGN;
 107                 break;
 108         default:
 109                 plog(LLV_ERROR, LOCATION, NULL,
 110                         "not supported CERT RR type %d.\n", res->ci_type);
 111                 goto err;
 112         }
 113
 114         /* create cert holder */
 115         cert = oakley_newcert();
 116         if (cert == NULL) {
 117                 plog(LLV_ERROR, LOCATION, NULL,
 118                         "failed to get cert buffer.\n");
 119                 goto err;
 120         }
 121         cert->pl = vmalloc(res->ci_certlen + 1);
 122         if (cert->pl == NULL) {
 123                 plog(LLV_ERROR, LOCATION, NULL,
 124                         "failed to get cert buffer.\n");
 125                 goto err;
 126         }
 127         memcpy(cert->pl->v + 1, res->ci_cert, res->ci_certlen);
 128         cert->pl->v[0] = type;
 129         cert->cert.v = cert->pl->v + 1;
 130         cert->cert.l = cert->pl->l - 1;
 131
 132         plog(LLV_DEBUG, LOCATION, NULL, "created CERT payload:\n");
 133         plogdump(LLV_DEBUG, cert->pl->v, cert->pl->l);
 134
 135 end:
 136         if (res)
 137                 freecertinfo(res);
 138
 139         return cert;
 140
 141 err:
 142         if (name)
 143                 racoon_free(name);
 144         if (cert)
 145                 oakley_delcert(cert);
 146         goto end;
 147 }