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/* $OpenBSD: cert.c,v 1.32 2007/08/05 09:43:09 tom Exp $ */
/* $EOM: cert.c,v 1.18 2000/09/28 12:53:27 niklas Exp $ */
/*
* Copyright (c) 1998, 1999 Niels Provos. All rights reserved.
* Copyright (c) 1999, 2000 Niklas Hallqvist. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This code was written under funding by Ericsson Radio Systems.
*/
#include <sys/param.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "isakmp_num.h"
#include "log.h"
#include "cert.h"
#include "x509.h"
#include "policy.h"
struct cert_handler cert_handler[] = {
{
ISAKMP_CERTENC_X509_SIG,
x509_cert_init, x509_crl_init, x509_cert_get, x509_cert_validate,
x509_cert_insert, x509_cert_free,
x509_certreq_validate, x509_certreq_decode, x509_free_aca,
x509_cert_obtain, x509_cert_get_key, x509_cert_get_subjects,
x509_cert_dup, x509_serialize, x509_printable, x509_from_printable,
x509_ca_count
},
{
ISAKMP_CERTENC_KEYNOTE,
keynote_cert_init, NULL, keynote_cert_get, keynote_cert_validate,
keynote_cert_insert, keynote_cert_free,
keynote_certreq_validate, keynote_certreq_decode, keynote_free_aca,
keynote_cert_obtain, keynote_cert_get_key, keynote_cert_get_subjects,
keynote_cert_dup, keynote_serialize, keynote_printable,
keynote_from_printable, keynote_ca_count
},
};
/* Initialize all certificate handlers */
int
cert_init(void)
{
size_t i;
int err = 1;
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
if (cert_handler[i].cert_init &&
!(*cert_handler[i].cert_init)())
err = 0;
return err;
}
int
crl_init(void)
{
size_t i;
int err = 1;
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
if (cert_handler[i].crl_init && !(*cert_handler[i].crl_init)())
err = 0;
return err;
}
struct cert_handler *
cert_get(u_int16_t id)
{
size_t i;
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++)
if (id == cert_handler[i].id)
return &cert_handler[i];
return 0;
}
/*
* Decode the certificate request of type TYPE contained in DATA extending
* DATALEN bytes. Return a certreq_aca structure which the caller is
* responsible for deallocating.
*/
struct certreq_aca *
certreq_decode(u_int16_t type, u_int8_t *data, u_int32_t datalen)
{
struct cert_handler *handler;
struct certreq_aca aca, *ret;
handler = cert_get(type);
if (!handler)
return 0;
aca.id = type;
aca.handler = handler;
aca.data = aca.raw_ca = NULL;
if (datalen > 0) {
int rc;
rc = handler->certreq_decode(&aca.data, data, datalen);
if (!rc)
return 0;
aca.raw_ca = malloc(datalen);
if (aca.raw_ca == NULL) {
log_error("certreq_decode: malloc (%lu) failed",
(unsigned long)datalen);
handler->free_aca(aca.data);
return 0;
}
memcpy(aca.raw_ca, data, datalen);
}
aca.raw_ca_len = datalen;
ret = malloc(sizeof aca);
if (!ret) {
log_error("certreq_decode: malloc (%lu) failed",
(unsigned long)sizeof aca);
free(aca.raw_ca);
handler->free_aca(aca.data);
return 0;
}
memcpy(ret, &aca, sizeof aca);
return ret;
}
void
cert_free_subjects(int n, u_int8_t **id, u_int32_t *len)
{
int i;
for (i = 0; i < n; i++)
free(id[i]);
free(id);
free(len);
}
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