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/*-
* Copyright (c) 2007 Bjoern A. Zeeb
* 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 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 AUTHOR, NCIRCLE NETWORK SECURITY,
* INC., 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.
*
* $FreeBSD$
*/
/*
* Confirm that privilege is required to open a pfkey socket, and that this
* is not allowed in jail.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <net/pfkeyv2.h>
#include <netinet/in.h>
#include <netipsec/ipsec.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include "main.h"
static char policy_bypass[] = "in bypass";
static char policy_entrust[] = "in entrust";
static char *bypassbuf = NULL;
static char *entrustbuf = NULL;
static int sd = -1;
static int
priv_netinet_ipsec_policy_bypass_setup_af(int asroot, int injail,
struct test *test, int af)
{
bypassbuf = ipsec_set_policy(policy_bypass, sizeof(policy_bypass) - 1);
if (bypassbuf == NULL) {
warn("%s: ipsec_set_policy(NULL)", __func__);
return (-1);
}
switch (af) {
case AF_INET:
sd = socket(AF_INET, SOCK_DGRAM, 0);
if (sd < 0) {
warn("%s: socket4", __func__);
return (-1);
}
break;
case AF_INET6:
sd = socket(AF_INET6, SOCK_DGRAM, 0);
if (sd < 0) {
warn("%s: socket6", __func__);
return (-1);
}
break;
default:
warnx("%s: unexpected address family", __func__);
return (-1);
}
return (0);
}
int
priv_netinet_ipsec_policy4_bypass_setup(int asroot, int injail,
struct test *test)
{
return (priv_netinet_ipsec_policy_bypass_setup_af(asroot, injail, test,
AF_INET));
}
int
priv_netinet_ipsec_policy6_bypass_setup(int asroot, int injail,
struct test *test)
{
return (priv_netinet_ipsec_policy_bypass_setup_af(asroot, injail, test,
AF_INET6));
}
static int
priv_netinet_ipsec_policy_entrust_setup_af(int asroot, int injail,
struct test *test, int af)
{
entrustbuf = ipsec_set_policy(policy_entrust, sizeof(policy_entrust)-1);
if (entrustbuf == NULL) {
warn("%s: ipsec_set_policy(NULL)", __func__);
return (-1);
}
switch (af) {
case AF_INET:
sd = socket(AF_INET, SOCK_DGRAM, 0);
if (sd < 0) {
warn("%s: socket4", __func__);
return (-1);
}
break;
case AF_INET6:
sd = socket(AF_INET6, SOCK_DGRAM, 0);
if (sd < 0) {
warn("%s: socket6", __func__);
return (-1);
}
break;
default:
warnx("%s: unexpected address family", __func__);
return (-1);
}
return (0);
}
int
priv_netinet_ipsec_policy4_entrust_setup(int asroot, int injail,
struct test *test)
{
return (priv_netinet_ipsec_policy_entrust_setup_af(asroot, injail, test,
AF_INET));
}
int
priv_netinet_ipsec_policy6_entrust_setup(int asroot, int injail,
struct test *test)
{
return (priv_netinet_ipsec_policy_entrust_setup_af(asroot, injail, test,
AF_INET6));
}
void
priv_netinet_ipsec_pfkey(int asroot, int injail, struct test *test)
{
int error, fd;
fd = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
if (fd < 0)
error = -1;
else
error = 0;
/*
* The injail checks are not really priv checks but making sure
* sys/kern/uipc_socket.c:socreate cred checks are working correctly.
*/
if (asroot && injail)
expect("priv_netinet_ipsec_pfkey(asroot, injail)", error,
-1, EPROTONOSUPPORT);
if (asroot && !injail)
expect("priv_netinet_ipsec_pfkey(asroot, !injail)", error,
0, 0);
if (!asroot && injail)
expect("priv_netinet_ipsec_pfkey(!asroot, injail)", error,
-1, EPROTONOSUPPORT);
if (!asroot && !injail)
expect("priv_netinet_ipsec_pfkey(!asroot, !injail)", error,
-1, EPERM);
if (fd >= 0)
(void)close(fd);
}
static void
priv_netinet_ipsec_policy_bypass_af(int asroot, int injail, struct test *test,
int af)
{
int error, level, optname;
switch (af) {
case AF_INET:
level = IPPROTO_IP;
optname = IP_IPSEC_POLICY;
break;
case AF_INET6:
level = IPPROTO_IPV6;
optname = IPV6_IPSEC_POLICY;
break;
default:
warnx("%s: unexpected address family", __func__);
return;
}
error = setsockopt(sd, level, optname,
bypassbuf, ipsec_get_policylen(bypassbuf));
if (asroot && injail)
expect("priv_netinet_ipsec_policy_bypass(asroot, injail)",
error, -1, EACCES); /* see ipsec_set_policy */
if (asroot && !injail)
expect("priv_netinet_ipsec_policy_bypass(asroot, !injail)",
error, 0, 0);
if (!asroot && injail)
expect("priv_netinet_ipsec_policy_bypass(!asroot, injail)",
error, -1, EACCES); /* see ipsec_set_policy */
if (!asroot && !injail)
expect("priv_netinet_ipsec_policy_bypass(!asroot, !injail)",
error, -1, EACCES); /* see ipsec_set_policy */
}
void
priv_netinet_ipsec_policy4_bypass(int asroot, int injail, struct test *test)
{
priv_netinet_ipsec_policy_bypass_af(asroot, injail, test, AF_INET);
}
void
priv_netinet_ipsec_policy6_bypass(int asroot, int injail, struct test *test)
{
priv_netinet_ipsec_policy_bypass_af(asroot, injail, test, AF_INET6);
}
static void
priv_netinet_ipsec_policy_entrust_af(int asroot, int injail, struct test *test,
int af)
{
int error, level, optname;
switch (af) {
case AF_INET:
level = IPPROTO_IP;
optname = IP_IPSEC_POLICY;
break;
case AF_INET6:
level = IPPROTO_IPV6;
optname = IPV6_IPSEC_POLICY;
break;
default:
warnx("%s: unexpected address family", __func__);
return;
}
error = setsockopt(sd, level, optname,
entrustbuf, ipsec_get_policylen(entrustbuf));
if (asroot && injail)
expect("priv_netinet_ipsec_policy_entrust(asroot, injail)",
error, 0, 0); /* XXX ipsec_set_policy */
if (asroot && !injail)
expect("priv_netinet_ipsec_policy_entrust(asroot, !injail)",
error, 0, 0);
if (!asroot && injail)
expect("priv_netinet_ipsec_policy_entrust(!asroot, injail)",
error, 0, 0); /* XXX ipsec_set_policy */
if (!asroot && !injail)
expect("priv_netinet_ipsec_policy_entrust(!asroot, !injail)",
error, 0, 0); /* XXX ipsec_set_policy */
}
void
priv_netinet_ipsec_policy4_entrust(int asroot, int injail, struct test *test)
{
priv_netinet_ipsec_policy_entrust_af(asroot, injail, test, AF_INET);
}
void
priv_netinet_ipsec_policy6_entrust(int asroot, int injail, struct test *test)
{
priv_netinet_ipsec_policy_entrust_af(asroot, injail, test, AF_INET6);
}
void
priv_netinet_ipsec_policy_bypass_cleanup(int asroot, int injail,
struct test *test)
{
if (bypassbuf != NULL) {
free(bypassbuf);
bypassbuf = NULL;
}
if (sd >= 0) {
close(sd);
sd = -1;
}
}
void
priv_netinet_ipsec_policy_entrust_cleanup(int asroot, int injail,
struct test *test)
{
if (entrustbuf != NULL) {
free(entrustbuf);
entrustbuf = NULL;
}
if (sd >= 0) {
close(sd);
sd = -1;
}
}
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