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/*
* The author of this code is John Ioannidis, ji@tla.org,
* (except when noted otherwise).
*
* This code was written for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis, kermit@forthnet.gr.
*
* Copyright (C) 1995, 1996, 1997 by John Ioannidis and Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NEITHER AUTHOR MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#include <sys/param.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netns/ns.h>
#include <netiso/iso.h>
#include <netccitt/x25.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#define SENO_EOL 0x00 /* End of Options, or placeholder */
#define SENO_NOP 0x01 /* No Operation. Skip */
#define SENO_NAME 0x02 /* tunnel name, NUL-terminated */
#define SENO_TDB 0x03 /* tunnel descriptor block address */
#define SENO_IFN 0x04 /* Encap interface number */
#define SENO_IFIP4A 0x05 /* Encap interface IPv4 address */
#define SENO_IPSA 0x06 /* Encap interface generic sockaddr */
#define IFT_ENC 0x37
#define INET
#include "net/encap.h"
/*
* The numbers below are arbitrary. They have been chosen for their
* mnemonic value. If sen_len is larger than what would be expected from
* the length of the data that follow, then TLV-triplets follow the
* addresses containing system-depended information.
*/
char buf[2048];
main(argc, argv)
int argc;
char **argv;
{
int sd;
struct rt_msghdr *rtm;
struct sockaddr_encap *dst, *msk, *gw;
struct sockaddr_dl *dl;
u_char *opts;
if (argc != 12)
fprintf(stderr, "usage: %s isrc isrcmask idst idstmask osrc odst spi if proto sport dport\n", argv[0]), exit(1);
sd = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC);
if (sd < 0)
perror("socket"), exit(1);
rtm = (struct rt_msghdr *)(&buf[0]);
dst = (struct sockaddr_encap *)(&buf[sizeof (*rtm)]);
gw = (struct sockaddr_encap *)(&buf[sizeof (*rtm) + SENT_IP4_LEN]);
/* opts = (u_char *)(&buf[sizeof (*rtm) + 2*SENT_IP4_LEN]); */
msk = (struct sockaddr_encap *)(&buf[sizeof (*rtm) + SENT_IP4_LEN + SENT_IPSP_LEN]);
/* dl = (struct sockaddr_dl *)(&buf[sizeof (*rtm) + 3*SENT_IP4_LEN + 12]); */
rtm->rtm_version = RTM_VERSION;
rtm->rtm_type = RTM_ADD;
rtm->rtm_index = 0;
rtm->rtm_pid = getpid();
rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK /* | RTA_IFP */;
rtm->rtm_errno = 0;
rtm->rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
rtm->rtm_inits = 0;
dst->sen_len = SENT_IP4_LEN;
dst->sen_family = AF_ENCAP;
dst->sen_type = SENT_IP4;
dst->sen_ip_src.s_addr = inet_addr(argv[1]);
dst->sen_ip_dst.s_addr = inet_addr(argv[3]);
dst->sen_proto = dst->sen_sport = dst->sen_dport = 0;
if (atoi(argv[9]) >= 0)
{
dst->sen_proto = atoi(argv[9]);
msk->sen_proto = 0xff;
if (atoi(argv[10]) >= 0)
{
dst->sen_sport = atoi(argv[10]);
msk->sen_sport = 0xffff;
}
if (atoi(argv[11]) >= 0)
{
dst->sen_dport = atoi(argv[11]);
msk->sen_dport = 0xffff;
}
}
gw->sen_len = SENT_IPSP_LEN;
gw->sen_family = AF_ENCAP;
gw->sen_type = SENT_IPSP;
gw->sen_ipsp_src.s_addr = inet_addr(argv[5]);
gw->sen_ipsp_dst.s_addr = inet_addr(argv[6]);
gw->sen_ipsp_spi = htonl(strtol(argv[7], NULL, 16));
gw->sen_ipsp_ifn = atoi(argv[8]);
/*
opts[0] = SENO_IFN;
opts[1] = 3;
opts[2] = 2;
opts[3] = SENO_NOP;
opts[4] = SENO_NOP;
opts[5] = SENO_NOP;
opts[6] = SENO_SPI;
opts[7] = 4;
opts[8] = 0x12;
opts[9] = 0x34;
opts[10] = 0x56;
opts[11] = 0x78;
*/
msk->sen_len = SENT_IP4_LEN;
msk->sen_family = AF_ENCAP;
msk->sen_type = SENT_IP4;
msk->sen_ip_src.s_addr = inet_addr(argv[2]);
msk->sen_ip_dst.s_addr = inet_addr(argv[4]);
/*
dl->sdl_len = 12;
dl->sdl_family = AF_DLI;
dl->sdl_index = 0;
dl->sdl_type = IFT_ENC;
dl->sdl_nlen = 4;
dl->sdl_alen = 0;
dl->sdl_slen = 0;
dl->sdl_data[0] = 'e';
dl->sdl_data[1] = 'n';
dl->sdl_data[2] = 'c';
dl->sdl_data[3] = '2';
*/
rtm->rtm_msglen = sizeof (*rtm) + dst->sen_len + gw->sen_len + msk->sen_len /* + dl->sdl_len */ ;
if (write(sd, (caddr_t)buf, rtm->rtm_msglen) < 0)
perror("write");
}
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