mirror of
https://git.FreeBSD.org/src.git
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9a4365d0e0
Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project
254 lines
6.0 KiB
C
254 lines
6.0 KiB
C
/*
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* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netkey/key_var.h>
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#include <netinet/in.h>
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#include <netinet6/ipsec.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include <string.h>
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#include <netdb.h>
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#include "ipsec_strerror.h"
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static const char *ipsp_dir_strs[] = {
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"any", "in", "out",
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};
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static const char *ipsp_policy_strs[] = {
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"discard", "none", "ipsec", "entrust", "bypass",
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};
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static int set_addresses __P((char *buf, caddr_t ptr));
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/*
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* policy is sadb_x_policy buffer.
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* Must call free() later.
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* When delimiter == NULL, alternatively ' '(space) is applied.
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*/
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char *
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ipsec_dump_policy(policy, delimiter)
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caddr_t policy;
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char *delimiter;
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{
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struct sadb_x_policy *xpl = (struct sadb_x_policy *)policy;
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struct sadb_x_ipsecrequest *xisr;
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int xtlen, buflen;
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char *buf;
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int error;
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/* sanity check */
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if (policy == NULL)
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return NULL;
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if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
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ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
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return NULL;
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}
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/* set delimiter */
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if (delimiter == NULL)
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delimiter = " ";
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switch (xpl->sadb_x_policy_dir) {
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case IPSEC_DIR_ANY:
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case IPSEC_DIR_INBOUND:
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case IPSEC_DIR_OUTBOUND:
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break;
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default:
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ipsec_errcode = EIPSEC_INVAL_DIR;
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return NULL;
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}
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switch (xpl->sadb_x_policy_type) {
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case IPSEC_POLICY_DISCARD:
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case IPSEC_POLICY_NONE:
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case IPSEC_POLICY_IPSEC:
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case IPSEC_POLICY_BYPASS:
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case IPSEC_POLICY_ENTRUST:
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break;
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default:
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ipsec_errcode = EIPSEC_INVAL_POLICY;
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return NULL;
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}
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buflen = strlen(ipsp_dir_strs[xpl->sadb_x_policy_dir])
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+ 1 /* space */
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+ strlen(ipsp_policy_strs[xpl->sadb_x_policy_type])
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+ 1; /* NUL */
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if ((buf = malloc(buflen)) == NULL) {
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ipsec_errcode = EIPSEC_NO_BUFS;
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return NULL;
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}
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strcpy(buf, ipsp_dir_strs[xpl->sadb_x_policy_dir]);
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strcat(buf, " ");
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strcat(buf, ipsp_policy_strs[xpl->sadb_x_policy_type]);
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if (xpl->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
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ipsec_errcode = EIPSEC_NO_ERROR;
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return buf;
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}
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xtlen = PFKEY_EXTLEN(xpl) - sizeof(*xpl);
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xisr = (struct sadb_x_ipsecrequest *)(xpl + 1);
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/* count length of buffer for use */
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/* XXX non-seriously */
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while (xtlen > 0) {
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buflen += 20;
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if (xisr->sadb_x_ipsecrequest_mode ==IPSEC_MODE_TUNNEL)
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buflen += 50;
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xtlen -= xisr->sadb_x_ipsecrequest_len;
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xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
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+ xisr->sadb_x_ipsecrequest_len);
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}
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/* validity check */
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if (xtlen < 0) {
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ipsec_errcode = EIPSEC_INVAL_SADBMSG;
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free(buf);
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return NULL;
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}
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if ((buf = realloc(buf, buflen)) == NULL) {
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ipsec_errcode = EIPSEC_NO_BUFS;
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return NULL;
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}
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xtlen = PFKEY_EXTLEN(xpl) - sizeof(*xpl);
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xisr = (struct sadb_x_ipsecrequest *)(xpl + 1);
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while (xtlen > 0) {
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strcat(buf, delimiter);
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switch (xisr->sadb_x_ipsecrequest_proto) {
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case IPPROTO_ESP:
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strcat(buf, "esp");
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break;
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case IPPROTO_AH:
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strcat(buf, "ah");
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break;
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case IPPROTO_IPCOMP:
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strcat(buf, "ipcomp");
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break;
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default:
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ipsec_errcode = EIPSEC_INVAL_PROTO;
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free(buf);
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return NULL;
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}
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strcat(buf, "/");
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switch (xisr->sadb_x_ipsecrequest_mode) {
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case IPSEC_MODE_ANY:
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strcat(buf, "any");
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break;
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case IPSEC_MODE_TRANSPORT:
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strcat(buf, "transport");
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break;
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case IPSEC_MODE_TUNNEL:
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strcat(buf, "tunnel");
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break;
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default:
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ipsec_errcode = EIPSEC_INVAL_MODE;
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free(buf);
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return NULL;
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}
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strcat(buf, "/");
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if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
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error = set_addresses(buf, (caddr_t)(xisr + 1));
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if (error) {
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ipsec_errcode = EIPSEC_INVAL_MODE;
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free(buf);
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return NULL;
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}
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}
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switch (xisr->sadb_x_ipsecrequest_level) {
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case IPSEC_LEVEL_DEFAULT:
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strcat(buf, "/default");
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break;
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case IPSEC_LEVEL_USE:
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strcat(buf, "/use");
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break;
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case IPSEC_LEVEL_REQUIRE:
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strcat(buf, "/require");
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break;
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case IPSEC_LEVEL_UNIQUE:
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strcat(buf, "/unique");
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break;
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default:
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ipsec_errcode = EIPSEC_INVAL_LEVEL;
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free(buf);
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return NULL;
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}
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xtlen -= xisr->sadb_x_ipsecrequest_len;
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xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
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+ xisr->sadb_x_ipsecrequest_len);
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}
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ipsec_errcode = EIPSEC_NO_ERROR;
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return buf;
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}
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static int
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set_addresses(buf, ptr)
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char *buf;
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caddr_t ptr;
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{
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char tmp[100]; /* XXX */
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struct sockaddr *saddr = (struct sockaddr *)ptr;
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getnameinfo(saddr, saddr->sa_len, tmp, sizeof(tmp),
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NULL, 0, NI_NUMERICHOST);
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strcat(buf, tmp);
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strcat(buf, "-");
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saddr = (struct sockaddr *)((caddr_t)saddr + saddr->sa_len);
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getnameinfo(saddr, saddr->sa_len, tmp, sizeof(tmp),
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NULL, 0, NI_NUMERICHOST);
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strcat(buf, tmp);
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return 0;
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}
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