/*
* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
* 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.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netkey/key_var.h>
#include <netinet/in.h>
#include <netinet6/ipsec.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include "ipsec_strerror.h"
static const char *ipsp_dir_strs[] = {
"any", "in", "out",
};
static const char *ipsp_policy_strs[] = {
"discard", "none", "ipsec", "entrust", "bypass",
};
static int set_addresses __P((char *buf, caddr_t ptr));
/*
* policy is sadb_x_policy buffer.
* Must call free() later.
* When delimiter == NULL, alternatively ' '(space) is applied.
*/
char *
ipsec_dump_policy(policy, delimiter)
caddr_t policy;
char *delimiter;
{
struct sadb_x_policy *xpl = (struct sadb_x_policy *)policy;
struct sadb_x_ipsecrequest *xisr;
int xtlen, buflen;
char *buf;
int error;
/* sanity check */
if (policy == NULL)
return NULL;
if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
return NULL;
}
/* set delimiter */
if (delimiter == NULL)
delimiter = " ";
switch (xpl->sadb_x_policy_dir) {
case IPSEC_DIR_ANY:
case IPSEC_DIR_INBOUND:
case IPSEC_DIR_OUTBOUND:
break;
default:
ipsec_errcode = EIPSEC_INVAL_DIR;
return NULL;
}
switch (xpl->sadb_x_policy_type) {
case IPSEC_POLICY_DISCARD:
case IPSEC_POLICY_NONE:
case IPSEC_POLICY_IPSEC:
case IPSEC_POLICY_BYPASS:
case IPSEC_POLICY_ENTRUST:
break;
default:
ipsec_errcode = EIPSEC_INVAL_POLICY;
return NULL;
}
buflen = strlen(ipsp_dir_strs[xpl->sadb_x_policy_dir])
+ 1 /* space */
+ strlen(ipsp_policy_strs[xpl->sadb_x_policy_type])
+ 1; /* NUL */
if ((buf = malloc(buflen)) == NULL) {
ipsec_errcode = EIPSEC_NO_BUFS;
return NULL;
}
strcpy(buf, ipsp_dir_strs[xpl->sadb_x_policy_dir]);
strcat(buf, " ");
strcat(buf, ipsp_policy_strs[xpl->sadb_x_policy_type]);
if (xpl->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
ipsec_errcode = EIPSEC_NO_ERROR;
return buf;
}
xtlen = PFKEY_EXTLEN(xpl) - sizeof(*xpl);
xisr = (struct sadb_x_ipsecrequest *)(xpl + 1);
/* count length of buffer for use */
/* XXX non-seriously */
while (xtlen > 0) {
buflen += 20;
if (xisr->sadb_x_ipsecrequest_mode ==IPSEC_MODE_TUNNEL)
buflen += 50;
xtlen -= xisr->sadb_x_ipsecrequest_len;
xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
+ xisr->sadb_x_ipsecrequest_len);
}
/* validity check */
if (xtlen < 0) {
ipsec_errcode = EIPSEC_INVAL_SADBMSG;
free(buf);
return NULL;
}
if ((buf = realloc(buf, buflen)) == NULL) {
ipsec_errcode = EIPSEC_NO_BUFS;
return NULL;
}
xtlen = PFKEY_EXTLEN(xpl) - sizeof(*xpl);
xisr = (struct sadb_x_ipsecrequest *)(xpl + 1);
while (xtlen > 0) {
strcat(buf, delimiter);
switch (xisr->sadb_x_ipsecrequest_proto) {
case IPPROTO_ESP:
strcat(buf, "esp");
break;
case IPPROTO_AH:
strcat(buf, "ah");
break;
case IPPROTO_IPCOMP:
strcat(buf, "ipcomp");
break;
default:
ipsec_errcode = EIPSEC_INVAL_PROTO;
free(buf);
return NULL;
}
strcat(buf, "/");
switch (xisr->sadb_x_ipsecrequest_mode) {
case IPSEC_MODE_ANY:
strcat(buf, "any");
break;
case IPSEC_MODE_TRANSPORT:
strcat(buf, "transport");
break;
case IPSEC_MODE_TUNNEL:
strcat(buf, "tunnel");
break;
default:
ipsec_errcode = EIPSEC_INVAL_MODE;
free(buf);
return NULL;
}
strcat(buf, "/");
if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
error = set_addresses(buf, (caddr_t)(xisr + 1));
if (error) {
ipsec_errcode = EIPSEC_INVAL_MODE;
free(buf);
return NULL;
}
}
switch (xisr->sadb_x_ipsecrequest_level) {
case IPSEC_LEVEL_DEFAULT:
strcat(buf, "/default");
break;
case IPSEC_LEVEL_USE:
strcat(buf, "/use");
break;
case IPSEC_LEVEL_REQUIRE:
strcat(buf, "/require");
break;
case IPSEC_LEVEL_UNIQUE:
strcat(buf, "/unique");
break;
default:
ipsec_errcode = EIPSEC_INVAL_LEVEL;
free(buf);
return NULL;
}
xtlen -= xisr->sadb_x_ipsecrequest_len;
xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
+ xisr->sadb_x_ipsecrequest_len);
}
ipsec_errcode = EIPSEC_NO_ERROR;
return buf;
}
static int
set_addresses(buf, ptr)
char *buf;
caddr_t ptr;
{
char tmp[100]; /* XXX */
struct sockaddr *saddr = (struct sockaddr *)ptr;
getnameinfo(saddr, saddr->sa_len, tmp, sizeof(tmp),
NULL, 0, NI_NUMERICHOST);
strcat(buf, tmp);
strcat(buf, "-");
saddr = (struct sockaddr *)((caddr_t)saddr + saddr->sa_len);
getnameinfo(saddr, saddr->sa_len, tmp, sizeof(tmp),
NULL, 0, NI_NUMERICHOST);
strcat(buf, tmp);
return 0;
}
