diff options
author | phk <phk@FreeBSD.org> | 1998-04-12 10:45:11 +0000 |
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committer | phk <phk@FreeBSD.org> | 1998-04-12 10:45:11 +0000 |
commit | 47df445492b5f701c77de131b7acb560ce3c4d52 (patch) | |
tree | a8fa0afbb0712d305ac0fab692f19af8bb243442 /sbin | |
parent | bc1d47f23b91689f24cd92fb6d48160bcaa34bc5 (diff) | |
download | FreeBSD-src-47df445492b5f701c77de131b7acb560ce3c4d52.zip FreeBSD-src-47df445492b5f701c77de131b7acb560ce3c4d52.tar.gz |
Remove these copies, they now live the right place.
Diffstat (limited to 'sbin')
-rw-r--r-- | sbin/noc-tun/Makefile | 6 | ||||
-rw-r--r-- | sbin/noc-tun/nos-tun.8 | 73 | ||||
-rw-r--r-- | sbin/noc-tun/nos-tun.c | 345 |
3 files changed, 0 insertions, 424 deletions
diff --git a/sbin/noc-tun/Makefile b/sbin/noc-tun/Makefile deleted file mode 100644 index bd74d7b..0000000 --- a/sbin/noc-tun/Makefile +++ /dev/null @@ -1,6 +0,0 @@ - -PROG=nos-tun -MAN8=nos-tun.8 - -.include <bsd.prog.mk> - diff --git a/sbin/noc-tun/nos-tun.8 b/sbin/noc-tun/nos-tun.8 deleted file mode 100644 index f3af572..0000000 --- a/sbin/noc-tun/nos-tun.8 +++ /dev/null @@ -1,73 +0,0 @@ -.\" -.\" ---------------------------------------------------------------------------- -.\" "THE BEER-WARE LICENSE" (Revision 42): -.\" <phk@FreeBSD.org> wrote this file. As long as you retain this notice you -.\" can do whatever you want with this stuff. If we meet some day, and you think -.\" this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp -.\" ---------------------------------------------------------------------------- -.\" -.\" $Id$ -.\" -.Dd April 11, 1998 -.Dt NOS-TUN 8 -.Os FreeBSD 3.0 -.Sh NAME -.Nm nos-tun -.Nd Implement ``nos'' or ``ka9q'' style IP over IP tunnel -.Sh SYNOPSIS -.Nm nos-tun -.Fl t -.Ar tunnel -.Fl s -.Ar source -.Fl d -.Ar destination -.Ar target -.Sh DESCRIPTION -.Nm -is used to establish an -.Em nos -style tunnel, (also known as -.Em ka9q -or -.Em IP-IP -tunnel) using a -.Xr tun 4 -kernel interface. -.Pp -.Ar tunnel -is the name of the tunnel device -.Dq /dev/tun0 -for example. -.Pp -.Ar source -and -.Ar destination -are the addresses used on the tunnel device. -If you configure the tunnel against a cisco router, use a netmask of -.Dq 255.255.255.252 -on the cisco. This is because the tunnel is a point-to-point interface -in the FreeBSD end, a concept cisco doesn't really implement. -.Pp -.Ar target -is the address of the remote tunnel device, this must match the source -address set on the remote end. -.Sh EXAMPLES -This end, a FreeBSD box on address 192.168.59.34: -.Bd -literal -offset indent 4m -nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45 -.Ed -.Pp -Remote cisco on address 192.168.56.45: -.Bd -literal -offset indent 4m -interface tunnel 0 -ip address 192.168.61.2 255.255.255.252 -tunnel mode nos -tunnel destination 192.168.59.34 -tunnel source 192.168.56.45 -.Ed -.Sh BUGS -We don't allow for setting our source address for multihomed machines. -.Sh AUTHOR -Nickolay N. Dudorov <nnd@itfs.nsk.su> wrote the program, -Poul-Henning Kamp <phk@FreeBSD.org> wrote the man-page. diff --git a/sbin/noc-tun/nos-tun.c b/sbin/noc-tun/nos-tun.c deleted file mode 100644 index 7847d5e..0000000 --- a/sbin/noc-tun/nos-tun.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Copyright (c) 1996, Nickolay Dudorov - * 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 unmodified, 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 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. - * - */ - -/* - * 'nos_tun' program configure tunN interface as a point-to-point - * connection with two "pseudo"-addresses between this host and - * 'target'. - * - * It uses Ip-over-Ip incapsulation ( protocol number 94 - IPIP) - * (known as NOS-incapsulation in CISCO-routers' terminology). - * - * 'nos_tun' can works with itself and CISCO-routers. - * (It may also work with Linux 'nos_tun's, but - * I have no Linux system here to test with). - * - * BUGS (or features ?): - * - you must specify ONE of the target host's addresses - * ( nos_tun sends and accepts packets only to/from this - * address ) - * - there can be only ONE tunnel between two hosts, - * more precisely - between given host and (one of) - * target hosts' address(es) - * (and why do you want more ?) - */ - - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <netdb.h> -#include <syslog.h> -#include <sys/param.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <sys/signal.h> -#include <sys/time.h> -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <net/if.h> -#include <arpa/inet.h> - - -/* Tunnel interface configuration stuff */ -static struct ifaliasreq ifra; -static struct ifreq ifrq; - -/* Global descriptors */ -int net; /* socket descriptor */ -int tun; /* tunnel descriptor */ - -int Set_address(char *addr, struct sockaddr_in *sin) -{ - struct hostent *hp; - - bzero((char *)sin, sizeof(struct sockaddr)); - sin->sin_family = AF_INET; - if((sin->sin_addr.s_addr = inet_addr(addr)) == (u_long)-1) { - hp = gethostbyname(addr); - if (!hp) { - syslog(LOG_ERR,"Unknown host %s\n", addr); - return 1; - } - sin->sin_family = hp->h_addrtype; - bcopy(hp->h_addr, (caddr_t)&sin->sin_addr, hp->h_length); - } - return 0; -} - -int tun_open(char *devname, struct sockaddr *ouraddr, char *theiraddr) -{ - int s; - struct sockaddr_in *sin; - - /* Open tun device */ - tun = open (devname, O_RDWR); - if (tun < 0) { - syslog(LOG_ERR,"Can't open %s - %m",devname); - return(1); - } - - /* - * At first, name the interface. - */ - bzero((char *)&ifra, sizeof(ifra)); - bzero((char *)&ifrq, sizeof(ifrq)); - - strncpy(ifrq.ifr_name, devname+5, IFNAMSIZ); - strncpy(ifra.ifra_name, devname+5, IFNAMSIZ); - - s = socket(AF_INET, SOCK_DGRAM, 0); - if (s < 0) { - syslog(LOG_ERR,"Can't open socket - %M"); - goto tunc_return; - } - - /* - * Delete (previous) adresses for interface - * - * !!!! - * On FreeBSD this ioctl returns error - * when tunN have no addresses, so - log and ignore it. - * - */ - if (ioctl(s, SIOCDIFADDR, &ifra) < 0) { - syslog(LOG_ERR,"SIOCDIFADDR - %m"); - } - - /* - * Set interface address - */ - sin = (struct sockaddr_in *)&(ifra.ifra_addr); - bcopy(ouraddr, sin, sizeof(struct sockaddr_in)); - sin->sin_len = sizeof(*sin); - - /* - * Set destination address - */ - sin = (struct sockaddr_in *)&(ifra.ifra_broadaddr); - if(Set_address(theiraddr,sin)) { - syslog(LOG_ERR,"Bad destination address:%s\n",theiraddr); - goto stunc_return; - } - sin->sin_len = sizeof(*sin); - - if (ioctl(s, SIOCAIFADDR, &ifra) < 0) { - syslog(LOG_ERR,"Can't set interface address - %m"); - goto stunc_return; - } - - /* - * Now, bring up the interface. - */ - if (ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { - syslog(LOG_ERR,"Can't get interface flags - %m"); - goto stunc_return; - } - - ifrq.ifr_flags |= IFF_UP; - if (!(ioctl(s, SIOCSIFFLAGS, &ifrq) < 0)) { - close(s); - return(0); - } - syslog(LOG_ERR,"Can't set interface UP - %m"); -stunc_return: - close(s); -tunc_return: - close(tun); - return(1); -} - -void Finish(int signum) -{ - int s; - - syslog(LOG_INFO,"Exiting"); - - close(net); - - s = socket(AF_INET, SOCK_DGRAM, 0); - if (s < 0) { - syslog(LOG_ERR,"Can't open socket - %m"); - goto closing_tun; - } - - /* - * Shut down interface. - */ - if (ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { - syslog(LOG_ERR,"Can't get interface flags - %m"); - goto closing_fds; - } - - ifrq.ifr_flags &= ~(IFF_UP|IFF_RUNNING); - if (ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { - syslog(LOG_ERR,"Can't set interface DOWN - %m"); - goto closing_fds; - } - - /* - * Delete adresses for interface - */ - bzero(&ifra.ifra_addr, sizeof(ifra.ifra_addr)); - bzero(&ifra.ifra_broadaddr, sizeof(ifra.ifra_addr)); - bzero(&ifra.ifra_mask, sizeof(ifra.ifra_addr)); - if (ioctl(s, SIOCDIFADDR, &ifra) < 0) { - syslog(LOG_ERR,"Can't delete interface's addresses - %m"); - } -closing_fds: - close(s); -closing_tun: - close(tun); - closelog(); - exit(signum); -} - -int main (int argc, char **argv) -{ - int c, len, ipoff; - - char *devname = NULL; - char *point_to = NULL; - char *to_point = NULL; - char *target; - - struct sockaddr t_laddr; /* Source address of tunnel */ - struct sockaddr whereto; /* Destination of tunnel */ - struct sockaddr_in *to; - - char buf[0x2000]; /* Packets buffer */ - struct ip *ip = (struct ip *)buf; - - fd_set rfds, wfds, efds; /* File descriptors for select() */ - int nfds; /* Return from select() */ - - - while ((c = getopt(argc, argv, "d:s:t:")) != EOF) { - switch (c) { - case 'd': - to_point = optarg; - break; - case 's': - point_to = optarg; - break; - case 't': - devname = optarg; - break; - } - } - argc -= optind; - argv += optind; - - if (argc != 1 || (devname == NULL) || - (point_to == NULL) || (to_point == NULL)) { - fprintf(stderr, - "Usage: nos_tun -t <tun_name> -s <source_addr> -d <dest_addr> <target_addr>\n"); - exit(1); - } - - target = *argv; - - /* Establish logging through 'syslog' */ - openlog("nos_tun", LOG_PID, LOG_DAEMON); - - if(Set_address(point_to, (struct sockaddr_in *)&t_laddr)) { - closelog(); - exit(2); - } - - if(tun_open(devname, &t_laddr, to_point)) { - closelog(); - exit(3); - } - - to = (struct sockaddr_in *)&whereto; - if(Set_address(target, to)) - Finish(4); - - if ((net = socket(AF_INET, SOCK_RAW, 94)) < 0) { - syslog(LOG_ERR,"Can't open socket - %m"); - Finish(5); - } - - if (connect(net,&whereto,sizeof(struct sockaddr_in)) < 0 ) { - syslog(LOG_ERR,"Can't connect to target - %m"); - close(net); - Finish(6); - } - - /* Demonize it */ - daemon(0,0); - - /* Install signal handlers */ - (void)signal(SIGHUP,Finish); - (void)signal(SIGINT,Finish); - (void)signal(SIGTERM,Finish); - - for (;;) { - /* Set file descriptors for select() */ - FD_ZERO(&rfds); FD_ZERO(&wfds); FD_ZERO(&efds); - FD_SET(tun,&rfds); FD_SET(net,&rfds); - - nfds = select(net+10,&rfds,&wfds,&efds,NULL); - if(nfds < 0) { - syslog(LOG_ERR,"Interrupted select"); - close(net); - Finish(7); - } - if(nfds == 0) { /* Impossible ? */ - syslog(LOG_ERR,"Timeout in select"); - close(net); - Finish(8); - } - - - if(FD_ISSET(net,&rfds)) { - /* Read from socket ... */ - len = read(net, buf, sizeof(buf)); - /* Check if this is "our" packet */ - if((ip->ip_src).s_addr == (to->sin_addr).s_addr) { - /* ... skip encapsulation headers ... */ - ipoff = (ip->ip_hl << 2); - /* ... and write to tun-device */ - write(tun,buf+ipoff,len-ipoff); - } - } - - if(FD_ISSET(tun,&rfds)) { - /* Read from tun ... */ - len = read(tun, buf, sizeof(buf)); - /* ... and send to network */ - if(send(net, buf, len,0) <= 0) { - syslog(LOG_ERR,"Can't send - %m"); - } - } - } -} - |