1 /* $NetBSD: dnssec.c,v 1.5 2009/03/12 10:57:26 tteras Exp $ */ 2 3 /* $KAME: dnssec.c,v 1.2 2001/08/05 18:46:07 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "config.h" 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <stdlib.h> 39 #include <string.h> 40 41 #include "var.h" 42 #include "vmbuf.h" 43 #include "misc.h" 44 #include "plog.h" 45 #include "debug.h" 46 47 #include "isakmp_var.h" 48 #include "isakmp.h" 49 #include "ipsec_doi.h" 50 #include "oakley.h" 51 #include "netdb_dnssec.h" 52 #include "strnames.h" 53 #include "dnssec.h" 54 #include "gcmalloc.h" 55 56 extern int h_errno; 57 58 vchar_t * 59 dnssec_getcert(id) 60 vchar_t *id; 61 { 62 vchar_t *cert = NULL; 63 struct certinfo *res = NULL; 64 struct ipsecdoi_id_b *id_b; 65 int type; 66 char *name = NULL; 67 int namelen; 68 int error; 69 70 id_b = (struct ipsecdoi_id_b *)id->v; 71 72 namelen = id->l - sizeof(*id_b); 73 name = racoon_malloc(namelen + 1); 74 if (!name) { 75 plog(LLV_ERROR, LOCATION, NULL, 76 "failed to get buffer.\n"); 77 return NULL; 78 } 79 memcpy(name, id_b + 1, namelen); 80 name[namelen] = '\0'; 81 82 switch (id_b->type) { 83 case IPSECDOI_ID_FQDN: 84 error = getcertsbyname(name, &res); 85 if (error != 0) { 86 plog(LLV_ERROR, LOCATION, NULL, 87 "getcertsbyname(\"%s\") failed.\n", name); 88 goto err; 89 } 90 break; 91 case IPSECDOI_ID_IPV4_ADDR: 92 case IPSECDOI_ID_IPV6_ADDR: 93 /* XXX should be processed to query PTR ? */ 94 default: 95 plog(LLV_ERROR, LOCATION, NULL, 96 "inpropper ID type passed %s " 97 "though getcert method is dnssec.\n", 98 s_ipsecdoi_ident(id_b->type)); 99 goto err; 100 } 101 102 /* check response */ 103 if (res->ci_next != NULL) { 104 plog(LLV_WARNING, LOCATION, NULL, 105 "not supported multiple CERT RR.\n"); 106 } 107 switch (res->ci_type) { 108 case DNSSEC_TYPE_PKIX: 109 /* XXX is it enough condition to set this type ? */ 110 type = ISAKMP_CERT_X509SIGN; 111 break; 112 default: 113 plog(LLV_ERROR, LOCATION, NULL, 114 "not supported CERT RR type %d.\n", res->ci_type); 115 goto err; 116 } 117 118 /* create cert holder */ 119 cert = vmalloc(res->ci_certlen + 1); 120 if (cert == NULL) { 121 plog(LLV_ERROR, LOCATION, NULL, 122 "failed to get cert buffer.\n"); 123 goto err; 124 } 125 cert->v[0] = type; 126 memcpy(&cert->v[1], res->ci_cert, res->ci_certlen); 127 128 plog(LLV_DEBUG, LOCATION, NULL, "created CERT payload:\n"); 129 plogdump(LLV_DEBUG, cert->v, cert->l); 130 131 err: 132 if (name) 133 racoon_free(name); 134 if (res) 135 freecertinfo(res); 136 return cert; 137 } 138