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/* $OpenBSD: sysdep.c,v 1.2 2003/06/03 14:53:11 ho Exp $ */
/*
* Copyright (c) 1998, 1999 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/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <md5.h>
#include <unistd.h>
#include "sysdep.h"
#ifdef NEED_SYSDEP_APP
#include "app.h"
#include "conf.h"
#include "ipsec.h"
#include "klips.h"
#endif /* NEED_SYSDEP_APP */
#include "log.h"
#include "sysdep.h"
extern char *__progname;
u_int32_t
sysdep_random ()
{
u_int32_t rndval;
u_char sig[16];
MD5_CTX ctx;
int fd, i;
struct {
struct timeval tv;
u_int rnd[(128 - sizeof (struct timeval)) / sizeof (u_int)];
} rdat;
fd = open ("/dev/urandom", O_RDONLY);
if (fd != -1)
{
read (fd, rdat.rnd, sizeof(rdat.rnd));
close (fd);
}
MD5Init (&ctx);
MD5Update (&ctx, (char *)&rdat, sizeof(rdat));
MD5Final (sig, &ctx);
rndval = 0;
for (i = 0; i < 4; i++)
{
u_int32_t *tmp = (u_int32_t *)&sig[i * 4];
rndval ^= *tmp;
}
return rndval;
}
char *
sysdep_progname ()
{
return __progname;
}
/* Return the length of the sockaddr struct. */
u_int8_t
sysdep_sa_len (struct sockaddr *sa)
{
switch (sa->sa_family)
{
case AF_INET:
return sizeof (struct sockaddr_in);
case AF_INET6:
return sizeof (struct sockaddr_in6);
}
log_print ("sysdep_sa_len: unknown sa family %d", sa->sa_family);
return sizeof (struct sockaddr_in);
}
/* As regress/ use this file I protect the sysdep_app_* stuff like this. */
#ifdef NEED_SYSDEP_APP
int
sysdep_app_open ()
{
return klips_open ();
}
void
sysdep_app_handler (int fd)
{
}
/* Check that the connection named NAME is active, or else make it active. */
void
sysdep_connection_check (char *name)
{
klips_connection_check (name);
}
/*
* Generate a SPI for protocol PROTO and the source/destination pair given by
* SRC, SRCLEN, DST & DSTLEN. Stash the SPI size in SZ.
*/
u_int8_t *
sysdep_ipsec_get_spi (size_t *sz, u_int8_t proto, struct sockaddr *src,
struct sockaddr *dst, u_int32_t seq)
{
if (app_none)
{
*sz = IPSEC_SPI_SIZE;
/* XXX should be random instead I think. */
return strdup ("\x12\x34\x56\x78");
}
return klips_get_spi (sz, proto, src, dst, seq);
}
int
sysdep_cleartext (int fd, int af)
{
return 0;
}
int
sysdep_ipsec_delete_spi (struct sa *sa, struct proto *proto, int incoming)
{
return klips_delete_spi (sa, proto, incoming);
}
int
sysdep_ipsec_enable_sa (struct sa *sa, struct sa *isakmp_sa)
{
return klips_enable_sa (sa, isakmp_sa);
}
int
sysdep_ipsec_group_spis (struct sa *sa, struct proto *proto1,
struct proto *proto2, int incoming)
{
return klips_group_spis (sa, proto1, proto2, incoming);
}
int
sysdep_ipsec_set_spi (struct sa *sa, struct proto *proto, int incoming,
struct sa *isakmp_sa)
{
return klips_set_spi (sa, proto, incoming, isakmp_sa);
}
#endif
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