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/* $OpenBSD: sysdep.c,v 1.2 1998/11/17 11:10:20 niklas Exp $ */
/* $EOM: sysdep-openbsd.c,v 1.16 1998/10/12 22:15:14 niklas Exp $ */
/*
* Copyright (c) 1998 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ericsson Radio Systems.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/encap.h>
#include <stdlib.h>
#include <string.h>
#ifdef NEED_SYSDEP_APP
#include "app.h"
#include "ipsec.h"
#include "pf_encap.h"
#endif NEED_SYSDEP_APP
#include "log.h"
#include "sysdep.h"
extern char *__progname;
int regrand = 0;
u_int32_t
sysdep_random ()
{
if (!regrand)
return arc4random ();
else
return random();
}
char *
sysdep_progname ()
{
return __progname;
}
/* As regress/ use this file I protect the sysdep_app_* stuff like this. */
#ifdef NEED_SYSDEP_APP
int
sysdep_app_open ()
{
return pf_encap_open ();
}
void
sysdep_app_handler (int fd)
{
pf_encap_handler (fd);
}
u_int8_t *
sysdep_ipsec_get_spi (size_t *sz, u_int8_t proto, void *id, size_t id_sz)
{
if (app_none)
{
*sz = IPSEC_SPI_SIZE;
/* XXX should be random instead I think. */
return strdup ("\x12\x34\x56\x78");
}
return pf_encap_get_spi (sz, proto, id, id_sz);
}
int
sysdep_cleartext (int fd)
{
int level;
if (app_none)
return 0;
/*
* Need to bypass system security policy, so I can send and
* receive key management datagrams in the clear.
*/
level = IPSEC_LEVEL_BYPASS;
if (setsockopt (fd, IPPROTO_IP, IP_AUTH_LEVEL, (char *)&level, sizeof level)
== -1)
{
log_error ("sysdep_cleartext: "
"setsockopt (%d, IPPROTO_IP, IP_AUTH_LEVEL, ...) failed", fd);
return -1;
}
if (setsockopt (fd, IPPROTO_IP, IP_ESP_TRANS_LEVEL, (char *)&level,
sizeof level) == -1)
{
log_error ("sysdep_cleartext: "
"setsockopt (%d, IPPROTO_IP, IP_ESP_TRANS_LEVEL, ...) "
"failed", fd);
return -1;
}
if (setsockopt (fd, IPPROTO_IP, IP_ESP_NETWORK_LEVEL, (char *)&level,
sizeof level) == -1)
{
log_error("sysdep_cleartext: "
"setsockopt (%d, IPPROTO_IP, IP_ESP_NETWORK_LEVEL, ...) "
"failed", fd);
return -1;
}
return 0;
}
int
sysdep_ipsec_delete_spi (struct sa *sa, struct proto *proto, int initiator)
{
if (app_none)
return 0;
return pf_encap_delete_spi (sa, proto, initiator);
}
int
sysdep_ipsec_enable_spi (struct sa *sa, int initiator)
{
if (app_none)
return 0;
return pf_encap_enable_spi (sa, initiator);
}
int
sysdep_ipsec_group_spis (struct sa *sa, struct proto *proto1,
struct proto *proto2, int role)
{
if (app_none)
return 0;
return pf_encap_group_spis (sa, proto1, proto2, role);
}
int
sysdep_ipsec_set_spi (struct sa *sa, struct proto *proto, int role,
int initiator)
{
if (app_none)
return 0;
return pf_encap_set_spi (sa, proto, role, initiator);
}
#endif
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