mirror of
https://github.com/paulusmack/ppp.git
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5ba9d88b94
Fix stats - problem was differing stats structures between linux and other platforms. Fix for removing proxy arp entry on linux. IPX patches.
1387 lines
31 KiB
C
1387 lines
31 KiB
C
/*
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* sys-ultrix.c - System-dependent procedures for setting up
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* PPP interfaces on Ultrix systems.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* Copyright (c) 1995 The Australian National University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University and The Australian National University.
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* The names of the Universities may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char rcsid[] = "$Id: sys-ultrix.c,v 1.30 1999/03/22 05:55:40 paulus Exp $";
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#endif
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/*
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* TODO:
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <utmp.h>
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#include <sys/types.h>
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#include <sys/file.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include <net/if.h>
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#include <net/ppp_defs.h>
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#include <net/if_ppp.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include "pppd.h"
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static int initdisc = -1; /* Initial TTY discipline for ppp_fd */
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static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */
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static int ppp_fd = -1; /* fd which is set to PPP discipline */
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static int restore_term; /* 1 => we've munged the terminal */
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static struct termios inittermios; /* Initial TTY termios */
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static struct winsize wsinfo; /* Initial window size info */
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static char *lock_file; /* name of lock file created */
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static int loop_slave = -1;
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static int loop_master;
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static char loop_name[20];
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static unsigned char inbuf[512]; /* buffer for chars read from loopback */
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static int sockfd; /* socket for doing interface ioctls */
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static fd_set in_fds; /* set of fds that wait_input waits for */
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static int max_in_fd; /* highest fd set in in_fds */
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static int if_is_up; /* the interface is currently up */
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static u_int32_t ifaddrs[2]; /* local and remote addresses */
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static u_int32_t default_route_gateway; /* gateway addr for default route */
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static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
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/* Prototypes for procedures local to this file. */
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static int translate_speed __P((int));
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static int baud_rate_of __P((int));
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static int get_ether_addr __P((u_int32_t, struct sockaddr *));
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/*
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* sys_init - System-dependent initialization.
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*/
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void
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sys_init()
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{
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/* Get an internet socket for doing socket ioctl's on. */
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if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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fatal("Couldn't create IP socket: %m");
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FD_ZERO(&in_fds);
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max_in_fd = 0;
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}
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/*
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* sys_cleanup - restore any system state we modified before exiting:
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* mark the interface down, delete default route and/or proxy arp entry.
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* This shouldn't call die() because it's called from die().
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*/
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void
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sys_cleanup()
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{
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struct ifreq ifr;
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if (if_is_up) {
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strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
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&& ((ifr.ifr_flags & IFF_UP) != 0)) {
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ifr.ifr_flags &= ~IFF_UP;
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ioctl(sockfd, SIOCSIFFLAGS, &ifr);
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}
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}
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if (ifaddrs[0])
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cifaddr(0, ifaddrs[0], ifaddrs[1]);
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if (default_route_gateway)
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cifdefaultroute(0, 0, default_route_gateway);
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if (proxy_arp_addr)
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cifproxyarp(0, proxy_arp_addr);
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}
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/*
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* sys_close - Clean up in a child process before execing.
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*/
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void
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sys_close()
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{
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close(sockfd);
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if (loop_slave >= 0) {
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close(loop_slave);
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close(loop_master);
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}
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}
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/*
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* sys_check_options - check the options that the user specified
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*/
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int
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sys_check_options()
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{
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if (demand) {
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option_error("Sorry - demand-dialling is not supported under Ultrix\n");
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return 0;
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}
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return 1;
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}
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/*
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* daemon - Detach us from the terminal session.
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*/
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int
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daemon(nochdir, noclose)
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int nochdir, noclose;
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{
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int pid;
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if ((pid = fork()) < 0)
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return -1;
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if (pid != 0)
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exit(0); /* parent dies */
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setsid();
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if (!nochdir)
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chdir("/");
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if (!noclose) {
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fclose(stdin); /* don't need stdin, stdout, stderr */
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fclose(stdout);
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fclose(stderr);
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}
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return 0;
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}
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/*
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* ppp_available - check whether the system has any ppp interfaces
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* (in fact we check whether we can do an ioctl on ppp0).
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*/
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int
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ppp_available()
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{
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int s, ok;
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struct ifreq ifr;
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extern char *no_ppp_msg;
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if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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return 1; /* can't tell */
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strlcpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
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ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
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close(s);
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no_ppp_msg = "\
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This system lacks kernel support for PPP. To include PPP support\n\
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in the kernel, please follow the steps detailed in the README.ultrix\n\
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file in the ppp-2.2 distribution.\n";
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return ok;
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}
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/*
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* establish_ppp - Turn the serial port into a ppp interface.
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*/
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int
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establish_ppp(fd)
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int fd;
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{
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int pppdisc = PPPDISC;
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int x;
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/*
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* Save the old line discipline of fd, and set it to PPP.
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*/
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if (ioctl(fd, TIOCGETD, &initdisc) < 0)
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fatal("ioctl(TIOCGETD): %m");
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if (ioctl(fd, TIOCSETD, &pppdisc) < 0)
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fatal("ioctl(TIOCSETD): %m");
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/*
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* Find out which interface we were given.
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*/
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if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
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fatal("ioctl(PPPIOCGUNIT): %m");
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ppp_fd = fd;
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/*
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* Enable debug in the driver if requested.
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*/
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if (kdebugflag) {
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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warn("ioctl (PPPIOCGFLAGS): %m");
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} else {
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x |= (kdebugflag & 0xFF) * SC_DEBUG;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
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warn("ioctl(PPPIOCSFLAGS): %m");
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}
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}
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/*
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* Set device for non-blocking reads.
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*/
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if ((initfdflags = fcntl(fd, F_GETFL)) == -1
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|| fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
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warn("Couldn't set device to non-blocking mode: %m");
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}
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return fd;
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}
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/*
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* restore_loop - reattach the ppp unit to the loopback.
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*/
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void
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restore_loop()
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{
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}
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/*
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* disestablish_ppp - Restore the serial port to normal operation.
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* This shouldn't call die() because it's called from die().
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*/
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void
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disestablish_ppp(fd)
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int fd;
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{
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/* Reset non-blocking mode on fd. */
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if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
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warn("Couldn't restore device fd flags: %m");
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initfdflags = -1;
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/* Restore old line discipline. */
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if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
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error("ioctl(TIOCSETD): %m");
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initdisc = -1;
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if (fd == ppp_fd)
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ppp_fd = -1;
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}
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/*
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* Check whether the link seems not to be 8-bit clean.
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*/
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void
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clean_check()
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{
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int x;
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char *s;
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if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
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s = NULL;
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switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
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case SC_RCV_B7_0:
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s = "bit 7 set to 1";
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break;
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case SC_RCV_B7_1:
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s = "bit 7 set to 0";
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break;
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case SC_RCV_EVNP:
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s = "odd parity";
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break;
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case SC_RCV_ODDP:
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s = "even parity";
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break;
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}
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if (s != NULL) {
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warn("Serial link is not 8-bit clean:");
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warn("All received characters had %s", s);
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}
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}
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}
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/*
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* List of valid speeds.
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*/
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struct speed {
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int speed_int, speed_val;
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} speeds[] = {
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#ifdef B50
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{ 50, B50 },
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#endif
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#ifdef B75
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{ 75, B75 },
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#endif
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#ifdef B110
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{ 110, B110 },
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#endif
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#ifdef B134
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{ 134, B134 },
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#endif
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#ifdef B150
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{ 150, B150 },
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#endif
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#ifdef B200
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{ 200, B200 },
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#endif
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#ifdef B300
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{ 300, B300 },
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#endif
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#ifdef B600
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{ 600, B600 },
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#endif
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#ifdef B1200
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{ 1200, B1200 },
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#endif
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#ifdef B1800
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{ 1800, B1800 },
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#endif
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#ifdef B2000
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{ 2000, B2000 },
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#endif
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#ifdef B2400
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{ 2400, B2400 },
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#endif
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#ifdef B3600
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{ 3600, B3600 },
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#endif
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#ifdef B4800
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{ 4800, B4800 },
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#endif
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#ifdef B7200
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{ 7200, B7200 },
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#endif
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#ifdef B9600
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{ 9600, B9600 },
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#endif
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#ifdef B19200
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{ 19200, B19200 },
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#endif
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#ifdef B38400
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{ 38400, B38400 },
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#endif
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#ifdef EXTA
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{ 19200, EXTA },
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#endif
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#ifdef EXTB
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{ 38400, EXTB },
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#endif
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#ifdef B57600
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{ 57600, B57600 },
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#endif
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#ifdef B115200
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{ 115200, B115200 },
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#endif
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{ 0, 0 }
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};
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/*
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* Translate from bits/second to a speed_t.
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*/
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int
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translate_speed(bps)
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int bps;
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{
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struct speed *speedp;
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if (bps == 0)
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return 0;
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for (speedp = speeds; speedp->speed_int; speedp++)
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if (bps == speedp->speed_int)
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return speedp->speed_val;
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warn("speed %d not supported", bps);
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return 0;
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}
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/*
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* Translate from a speed_t to bits/second.
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*/
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int
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baud_rate_of(speed)
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int speed;
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{
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struct speed *speedp;
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if (speed == 0)
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return 0;
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for (speedp = speeds; speedp->speed_int; speedp++)
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if (speed == speedp->speed_val)
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return speedp->speed_int;
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return 0;
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}
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/*
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* set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
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* at the requested speed, etc. If `local' is true, set CLOCAL
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* regardless of whether the modem option was specified.
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*/
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void
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set_up_tty(fd, local)
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int fd, local;
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{
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int speed, x;
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struct termios tios;
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if (tcgetattr(fd, &tios) < 0)
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fatal("tcgetattr: %m");
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if (!restore_term) {
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inittermios = tios;
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ioctl(fd, TIOCGWINSZ, &wsinfo);
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}
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tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
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#ifdef CRTSCTS
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if (crtscts > 0 && !local)
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tios.c_cflag |= CRTSCTS;
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else if (crtscts < 0)
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tios.c_cflag &= ~CRTSCTS;
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#endif /* CRTSCTS */
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tios.c_cflag |= CS8 | CREAD | HUPCL;
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if (local || !modem)
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tios.c_cflag |= CLOCAL;
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tios.c_iflag = IGNBRK | IGNPAR;
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tios.c_oflag = 0;
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tios.c_lflag = 0;
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tios.c_cc[VMIN] = 1;
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tios.c_cc[VTIME] = 0;
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if (crtscts == -2) {
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tios.c_iflag |= IXON | IXOFF;
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tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
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tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
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}
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speed = translate_speed(inspeed);
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if (speed) {
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cfsetospeed(&tios, speed);
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cfsetispeed(&tios, speed);
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} else {
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speed = cfgetospeed(&tios);
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/*
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* We can't proceed if the serial port speed is B0,
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* since that implies that the serial port is disabled.
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*/
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if (speed == B0)
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fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
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}
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if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
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fatal("tcsetattr: %m");
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x = 0;
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if (ioctl(fd, (crtscts > 0 || modem)? TIOCMODEM: TIOCNMODEM, &x) < 0)
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warn("TIOC(N)MODEM: %m");
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if (ioctl(fd, (local || !modem)? TIOCNCAR: TIOCCAR) < 0)
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warn("TIOC(N)CAR: %m");
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baud_rate = inspeed = baud_rate_of(speed);
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restore_term = 1;
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}
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/*
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* restore_tty - restore the terminal to the saved settings.
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*/
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void
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restore_tty(fd)
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int fd;
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{
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if (restore_term) {
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if (!default_device) {
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/*
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* Turn off echoing, because otherwise we can get into
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* a loop with the tty and the modem echoing to each other.
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* We presume we are the sole user of this tty device, so
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* when we close it, it will revert to its defaults anyway.
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*/
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inittermios.c_lflag &= ~(ECHO | ECHONL);
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}
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if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
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if (errno != ENXIO)
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warn("tcsetattr: %m");
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ioctl(fd, TIOCSWINSZ, &wsinfo);
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restore_term = 0;
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}
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}
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/*
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* setdtr - control the DTR line on the serial port.
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* This is called from die(), so it shouldn't call die().
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*/
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void
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setdtr(fd, on)
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int fd, on;
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{
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int modembits = TIOCM_DTR;
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ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
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}
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|
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/*
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* open_ppp_loopback - open the device we use for getting
|
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* packets in demand mode, and connect it to a ppp interface.
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* Here we use would use a pty, except that Ultrix ptys are brain-dead.
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*/
|
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int
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open_ppp_loopback()
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{
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fatal("open_ppp_loopback called!");
|
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/* return loop_master; */
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}
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|
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/*
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|
* output - Output PPP packet.
|
|
*/
|
|
void
|
|
output(unit, p, len)
|
|
int unit;
|
|
u_char *p;
|
|
int len;
|
|
{
|
|
if (debug)
|
|
dbglog("sent %P", p, len);
|
|
|
|
if (write(ttyfd, p, len) < 0) {
|
|
if (errno != EIO)
|
|
error("write: %m");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* wait_input - wait until there is data available,
|
|
* for the length of time specified by *timo (indefinite
|
|
* if timo is NULL).
|
|
*/
|
|
void
|
|
wait_input(timo)
|
|
struct timeval *timo;
|
|
{
|
|
fd_set ready;
|
|
int n;
|
|
|
|
ready = in_fds;
|
|
n = select(ttyfd+1, &ready, NULL, &ready, timo);
|
|
if (n < 0 && errno != EINTR)
|
|
fatal("select: %m");
|
|
}
|
|
|
|
|
|
/*
|
|
* add_fd - add an fd to the set that wait_input waits for.
|
|
*/
|
|
void add_fd(fd)
|
|
int fd;
|
|
{
|
|
FD_SET(fd, &in_fds);
|
|
if (fd > max_in_fd)
|
|
max_in_fd = fd;
|
|
}
|
|
|
|
/*
|
|
* remove_fd - remove an fd from the set that wait_input waits for.
|
|
*/
|
|
void remove_fd(fd)
|
|
int fd;
|
|
{
|
|
FD_CLR(fd, &in_fds);
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* wait_loop_output - wait until there is data available on the
|
|
* loopback, for the length of time specified by *timo (indefinite
|
|
* if timo is NULL).
|
|
*/
|
|
void
|
|
wait_loop_output(timo)
|
|
struct timeval *timo;
|
|
{
|
|
wait_time(timo);
|
|
}
|
|
|
|
|
|
/*
|
|
* wait_time - wait for a given length of time or until a
|
|
* signal is received.
|
|
*/
|
|
void
|
|
wait_time(timo)
|
|
struct timeval *timo;
|
|
{
|
|
int n;
|
|
|
|
n = select(0, NULL, NULL, NULL, timo);
|
|
if (n < 0 && errno != EINTR)
|
|
fatal("select: %m");
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* read_packet - get a PPP packet from the serial device.
|
|
*/
|
|
int
|
|
read_packet(buf)
|
|
u_char *buf;
|
|
{
|
|
int len;
|
|
|
|
if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
|
|
if (errno == EWOULDBLOCK || errno == EINTR)
|
|
return -1;
|
|
fatal("read(fd): %m");
|
|
}
|
|
return len;
|
|
}
|
|
|
|
|
|
/*
|
|
* get_loop_output - read characters from the loopback, form them
|
|
* into frames, and detect when we want to bring the real link up.
|
|
* Return value is 1 if we need to bring up the link, 0 otherwise.
|
|
*/
|
|
int
|
|
get_loop_output()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* ppp_send_config - configure the transmit characteristics of
|
|
* the ppp interface.
|
|
*/
|
|
void
|
|
ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
|
|
int unit, mtu;
|
|
u_int32_t asyncmap;
|
|
int pcomp, accomp;
|
|
{
|
|
u_int x;
|
|
|
|
if (ioctl(ppp_fd, PPPIOCSMTU, &mtu) < 0)
|
|
fatal("ioctl(PPPIOCSMTU): %m");
|
|
|
|
if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0)
|
|
fatal("ioctl(PPPIOCSASYNCMAP): %m");
|
|
|
|
if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0)
|
|
fatal("ioctl (PPPIOCGFLAGS): %m");
|
|
x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
|
|
x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
|
|
if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
|
|
fatal("ioctl(PPPIOCSFLAGS): %m");
|
|
}
|
|
|
|
|
|
/*
|
|
* ppp_set_xaccm - set the extended transmit ACCM for the interface.
|
|
*/
|
|
void
|
|
ppp_set_xaccm(unit, accm)
|
|
int unit;
|
|
ext_accm accm;
|
|
{
|
|
if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
|
|
warn("ioctl(set extended ACCM): %m");
|
|
}
|
|
|
|
|
|
/*
|
|
* ppp_recv_config - configure the receive-side characteristics of
|
|
* the ppp interface.
|
|
*/
|
|
void
|
|
ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
|
|
int unit, mru;
|
|
u_int32_t asyncmap;
|
|
int pcomp, accomp;
|
|
{
|
|
int x;
|
|
|
|
if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0)
|
|
fatal("ioctl(PPPIOCSMRU): %m");
|
|
if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0)
|
|
fatal("ioctl(PPPIOCSRASYNCMAP): %m");
|
|
if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0)
|
|
fatal("ioctl (PPPIOCGFLAGS): %m");
|
|
x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
|
|
if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
|
|
fatal("ioctl(PPPIOCSFLAGS): %m");
|
|
}
|
|
|
|
/*
|
|
* ccp_test - ask kernel whether a given compression method
|
|
* is acceptable for use. Returns 1 if the method and parameters
|
|
* are OK, 0 if the method is known but the parameters are not OK
|
|
* (e.g. code size should be reduced), or -1 if the method is unknown.
|
|
*/
|
|
int
|
|
ccp_test(unit, opt_ptr, opt_len, for_transmit)
|
|
int unit, opt_len, for_transmit;
|
|
u_char *opt_ptr;
|
|
{
|
|
struct ppp_option_data data;
|
|
|
|
data.ptr = opt_ptr;
|
|
data.length = opt_len;
|
|
data.transmit = for_transmit;
|
|
if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
|
|
return 1;
|
|
return (errno == ENOBUFS)? 0: -1;
|
|
}
|
|
|
|
/*
|
|
* ccp_flags_set - inform kernel about the current state of CCP.
|
|
*/
|
|
void
|
|
ccp_flags_set(unit, isopen, isup)
|
|
int unit, isopen, isup;
|
|
{
|
|
int x;
|
|
|
|
if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
|
error("ioctl (PPPIOCGFLAGS): %m");
|
|
return;
|
|
}
|
|
x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
|
|
x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
|
|
if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
|
|
error("ioctl(PPPIOCSFLAGS): %m");
|
|
}
|
|
|
|
/*
|
|
* ccp_fatal_error - returns 1 if decompression was disabled as a
|
|
* result of an error detected after decompression of a packet,
|
|
* 0 otherwise. This is necessary because of patent nonsense.
|
|
*/
|
|
int
|
|
ccp_fatal_error(unit)
|
|
int unit;
|
|
{
|
|
int x;
|
|
|
|
if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
|
error("ioctl(PPPIOCGFLAGS): %m");
|
|
return 0;
|
|
}
|
|
return x & SC_DC_FERROR;
|
|
}
|
|
|
|
/*
|
|
* get_idle_time - return how long the link has been idle.
|
|
*/
|
|
int
|
|
get_idle_time(u, ip)
|
|
int u;
|
|
struct ppp_idle *ip;
|
|
{
|
|
return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
|
|
}
|
|
|
|
/*
|
|
* get_ppp_stats - return statistics for the link.
|
|
*/
|
|
int
|
|
get_ppp_stats(u, stats)
|
|
int u;
|
|
struct pppd_stats *stats;
|
|
{
|
|
struct ifpppstatsreq req;
|
|
|
|
memset (&req, 0, sizeof (req));
|
|
strlcpy(req.ifr_name, interface, sizeof(req.ifr_name));
|
|
if (ioctl(sockfd, SIOCGPPPSTATS, &req) < 0) {
|
|
error("Couldn't get PPP statistics: %m");
|
|
return 0;
|
|
}
|
|
stats->bytes_in = req.stats.p.ppp_ibytes;
|
|
stats->bytes_out = req.stats.p.ppp_obytes;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* sifvjcomp - config tcp header compression
|
|
*/
|
|
int
|
|
sifvjcomp(u, vjcomp, cidcomp, maxcid)
|
|
int u, vjcomp, cidcomp, maxcid;
|
|
{
|
|
u_int x;
|
|
|
|
if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
|
error("ioctl (PPPIOCGFLAGS): %m");
|
|
return 0;
|
|
}
|
|
x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
|
|
x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
|
|
if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
|
error("ioctl(PPPIOCSFLAGS): %m");
|
|
return 0;
|
|
}
|
|
if (ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
|
|
error("ioctl(PPPIOCSFLAGS): %m");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* sifup - Config the interface up and enable IP packets to pass.
|
|
*/
|
|
int
|
|
sifup(u)
|
|
int u;
|
|
{
|
|
struct ifreq ifr;
|
|
|
|
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
|
if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
|
|
error("ioctl (SIOCGIFFLAGS): %m");
|
|
return 0;
|
|
}
|
|
ifr.ifr_flags |= IFF_UP;
|
|
if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
|
|
error("ioctl(SIOCSIFFLAGS): %m");
|
|
return 0;
|
|
}
|
|
if_is_up = 1;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* sifnpmode - Set the mode for handling packets for a given NP.
|
|
*/
|
|
int
|
|
sifnpmode(u, proto, mode)
|
|
int u;
|
|
int proto;
|
|
enum NPmode mode;
|
|
{
|
|
struct npioctl npi;
|
|
|
|
npi.protocol = proto;
|
|
npi.mode = mode;
|
|
if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
|
|
error("ioctl(set NP %d mode to %d): %m", proto, mode);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* sifdown - Config the interface down and disable IP.
|
|
*/
|
|
int
|
|
sifdown(u)
|
|
int u;
|
|
{
|
|
struct ifreq ifr;
|
|
int rv;
|
|
struct npioctl npi;
|
|
|
|
rv = 1;
|
|
npi.protocol = PPP_IP;
|
|
npi.mode = NPMODE_ERROR;
|
|
ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi);
|
|
/* ignore errors, because ppp_fd might have been closed by now. */
|
|
|
|
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
|
if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
|
|
error("ioctl (SIOCGIFFLAGS): %m");
|
|
rv = 0;
|
|
} else {
|
|
ifr.ifr_flags &= ~IFF_UP;
|
|
if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
|
|
error("ioctl(SIOCSIFFLAGS): %m");
|
|
rv = 0;
|
|
} else
|
|
if_is_up = 0;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
|
|
* if it exists.
|
|
*/
|
|
#define SET_SA_FAMILY(addr, family) \
|
|
BZERO((char *) &(addr), sizeof(addr)); \
|
|
addr.sa_family = (family);
|
|
|
|
/*
|
|
* sifaddr - Config the interface IP addresses and netmask.
|
|
*/
|
|
int
|
|
sifaddr(u, o, h, m)
|
|
int u;
|
|
u_int32_t o, h, m;
|
|
{
|
|
int ret;
|
|
struct ifreq ifr;
|
|
|
|
ret = 1;
|
|
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
|
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
|
|
if (m != 0) {
|
|
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
|
|
info("Setting interface mask to %s\n", ip_ntoa(m));
|
|
if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
|
|
error("ioctl(SIOCSIFNETMASK): %m");
|
|
ret = 0;
|
|
}
|
|
}
|
|
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
|
|
if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
|
|
error("ioctl(SIOCSIFADDR): %m");
|
|
ret = 0;
|
|
}
|
|
((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
|
|
if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
|
|
error("ioctl(SIOCSIFDSTADDR): %m");
|
|
ret = 0;
|
|
}
|
|
ifaddrs[0] = o;
|
|
ifaddrs[1] = h;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* cifaddr - Clear the interface IP addresses, and delete routes
|
|
* through the interface if possible.
|
|
*/
|
|
int
|
|
cifaddr(u, o, h)
|
|
int u;
|
|
u_int32_t o, h;
|
|
{
|
|
struct rtentry rt;
|
|
|
|
ifaddrs[0] = 0;
|
|
BZERO(&rt, sizeof(rt));
|
|
SET_SA_FAMILY(rt.rt_dst, AF_INET);
|
|
((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
|
|
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
|
|
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
|
|
rt.rt_flags = RTF_HOST;
|
|
if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
|
|
error("ioctl(SIOCDELRT): %m");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* sifdefaultroute - assign a default route through the address given.
|
|
*/
|
|
int
|
|
sifdefaultroute(u, l, g)
|
|
int u;
|
|
u_int32_t l, g;
|
|
{
|
|
struct rtentry rt;
|
|
|
|
BZERO(&rt, sizeof(rt));
|
|
SET_SA_FAMILY(rt.rt_dst, AF_INET);
|
|
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
|
|
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
|
|
rt.rt_flags = RTF_GATEWAY;
|
|
if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
|
|
error("default route ioctl(SIOCADDRT): %m");
|
|
return 0;
|
|
}
|
|
default_route_gateway = g;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* cifdefaultroute - delete a default route through the address given.
|
|
*/
|
|
int
|
|
cifdefaultroute(u, l, g)
|
|
int u;
|
|
u_int32_t l, g;
|
|
{
|
|
struct rtentry rt;
|
|
|
|
BZERO(&rt, sizeof(rt));
|
|
SET_SA_FAMILY(rt.rt_dst, AF_INET);
|
|
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
|
|
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
|
|
rt.rt_flags = RTF_GATEWAY;
|
|
if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
|
|
warn("default route ioctl(SIOCDELRT): %m");
|
|
default_route_gateway = 0;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* sifproxyarp - Make a proxy ARP entry for the peer.
|
|
*/
|
|
int
|
|
sifproxyarp(unit, hisaddr)
|
|
int unit;
|
|
u_int32_t hisaddr;
|
|
{
|
|
struct arpreq arpreq;
|
|
|
|
BZERO(&arpreq, sizeof(arpreq));
|
|
|
|
/*
|
|
* Get the hardware address of an interface on the same subnet
|
|
* as our local address.
|
|
*/
|
|
if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
|
|
error("Cannot determine ethernet address for proxy ARP");
|
|
return 0;
|
|
}
|
|
|
|
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
|
|
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
|
|
arpreq.arp_flags = ATF_PERM | ATF_PUBL;
|
|
if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
|
|
error("Couldn't add proxy arp entry: %m");
|
|
return 0;
|
|
}
|
|
|
|
proxy_arp_addr = hisaddr;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* cifproxyarp - Delete the proxy ARP entry for the peer.
|
|
*/
|
|
int
|
|
cifproxyarp(unit, hisaddr)
|
|
int unit;
|
|
u_int32_t hisaddr;
|
|
{
|
|
struct arpreq arpreq;
|
|
|
|
BZERO(&arpreq, sizeof(arpreq));
|
|
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
|
|
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
|
|
if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
|
|
warn("Couldn't delete proxy arp entry: %m");
|
|
return 0;
|
|
}
|
|
proxy_arp_addr = 0;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* get_ether_addr - get the hardware address of an interface on the
|
|
* the same subnet as ipaddr.
|
|
*/
|
|
#define MAX_IFS 32
|
|
|
|
static int
|
|
get_ether_addr(ipaddr, hwaddr)
|
|
u_int32_t ipaddr;
|
|
struct sockaddr *hwaddr;
|
|
{
|
|
struct ifreq *ifr, *ifend;
|
|
u_int32_t ina, mask;
|
|
struct ifreq ifreq;
|
|
struct ifconf ifc;
|
|
struct ifreq ifs[MAX_IFS];
|
|
struct ifdevea ifdevea;
|
|
|
|
ifc.ifc_len = sizeof(ifs);
|
|
ifc.ifc_req = ifs;
|
|
if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
|
|
error("ioctl(SIOCGIFCONF): %m");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Scan through looking for an interface with an Internet
|
|
* address on the same subnet as `ipaddr'.
|
|
*/
|
|
ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
|
|
for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
|
|
((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
|
|
if (ifr->ifr_addr.sa_family == AF_INET) {
|
|
ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
|
|
strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
|
|
/*
|
|
* Check that the interface is up, and not point-to-point
|
|
* or loopback.
|
|
*/
|
|
if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
|
|
continue;
|
|
if ((ifreq.ifr_flags &
|
|
(IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
|
|
!= (IFF_UP|IFF_BROADCAST))
|
|
continue;
|
|
/*
|
|
* Get its netmask and check that it's on the right subnet.
|
|
*/
|
|
if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
|
|
continue;
|
|
mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
|
|
if ((ipaddr & mask) != (ina & mask))
|
|
continue;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ifr >= ifend)
|
|
return 0;
|
|
info("found interface %s for proxy arp", ifr->ifr_name);
|
|
|
|
/*
|
|
* Grab the physical address for this interface.
|
|
*/
|
|
strlcpy(ifdevea.ifr_name, ifr->ifr_name, sizeof(ifdevea.ifr_name));
|
|
if (ioctl(sockfd, SIOCRPHYSADDR, &ifdevea) < 0) {
|
|
error("Couldn't get h/w address for %s: %m", ifr->ifr_name);
|
|
return 0;
|
|
}
|
|
|
|
hwaddr->sa_family = AF_UNSPEC;
|
|
BCOPY(ifdevea.current_pa, hwaddr->sa_data, 6);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return user specified netmask, modified by any mask we might determine
|
|
* for address `addr' (in network byte order).
|
|
* Here we scan through the system's list of interfaces, looking for
|
|
* any non-point-to-point interfaces which might appear to be on the same
|
|
* network as `addr'. If we find any, we OR in their netmask to the
|
|
* user-specified netmask.
|
|
*/
|
|
u_int32_t
|
|
GetMask(addr)
|
|
u_int32_t addr;
|
|
{
|
|
u_int32_t mask, nmask, ina;
|
|
struct ifreq *ifr, *ifend, ifreq;
|
|
struct ifconf ifc;
|
|
struct ifreq ifs[MAX_IFS];
|
|
|
|
addr = ntohl(addr);
|
|
if (IN_CLASSA(addr)) /* determine network mask for address class */
|
|
nmask = IN_CLASSA_NET;
|
|
else if (IN_CLASSB(addr))
|
|
nmask = IN_CLASSB_NET;
|
|
else
|
|
nmask = IN_CLASSC_NET;
|
|
/* class D nets are disallowed by bad_ip_adrs */
|
|
mask = netmask | htonl(nmask);
|
|
|
|
/*
|
|
* Scan through the system's network interfaces.
|
|
*/
|
|
ifc.ifc_len = sizeof(ifs);
|
|
ifc.ifc_req = ifs;
|
|
if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
|
|
warn("ioctl(SIOCGIFCONF): %m");
|
|
return mask;
|
|
}
|
|
ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
|
|
for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
|
|
((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
|
|
/*
|
|
* Check the interface's internet address.
|
|
*/
|
|
if (ifr->ifr_addr.sa_family != AF_INET)
|
|
continue;
|
|
ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
|
|
if ((ntohl(ina) & nmask) != (addr & nmask))
|
|
continue;
|
|
/*
|
|
* Check that the interface is up, and not point-to-point or loopback.
|
|
*/
|
|
strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
|
|
if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
|
|
continue;
|
|
if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
|
|
!= IFF_UP)
|
|
continue;
|
|
/*
|
|
* Get its netmask and OR it into our mask.
|
|
*/
|
|
if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
|
|
continue;
|
|
mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
|
|
}
|
|
|
|
return mask;
|
|
}
|
|
|
|
/*
|
|
* have_route_to - determine if the system has any route to
|
|
* a given IP address.
|
|
* For demand mode to work properly, we have to ignore routes
|
|
* through our own interface.
|
|
*/
|
|
int have_route_to(u_int32_t addr)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Use the hostid as part of the random number seed.
|
|
*/
|
|
int
|
|
get_host_seed()
|
|
{
|
|
return gethostid();
|
|
}
|
|
|
|
|
|
/*
|
|
Seems like strdup() is not part of string package in Ultrix.
|
|
If I understood the man-page on the sun this should work.
|
|
|
|
Robert Olsson
|
|
*/
|
|
|
|
char *strdup( in ) char *in;
|
|
{
|
|
char* dup;
|
|
if(! (dup = (char *) malloc( strlen( in ) +1 ))) return NULL;
|
|
(void) strcpy( dup, in );
|
|
return dup;
|
|
}
|
|
|
|
/*
|
|
* This logwtmp() implementation is subject to the following copyright:
|
|
*
|
|
* Copyright (c) 1988 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#define WTMPFILE "/usr/adm/wtmp"
|
|
|
|
void
|
|
logwtmp(line, name, host)
|
|
const char *line, *name, *host;
|
|
{
|
|
int fd;
|
|
struct stat buf;
|
|
struct utmp ut;
|
|
|
|
if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
|
|
return;
|
|
if (!fstat(fd, &buf)) {
|
|
strlcpy(ut.ut_line, line, sizeof(ut.ut_line));
|
|
strlcpy(ut.ut_name, name, sizeof(ut.ut_name));
|
|
strlcpy(ut.ut_host, host, sizeof(ut.ut_host));
|
|
(void)time(&ut.ut_time);
|
|
if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
|
|
(void)ftruncate(fd, buf.st_size);
|
|
}
|
|
close(fd);
|
|
}
|
|
|
|
/*
|
|
* Routines for locking and unlocking the serial device, moved here
|
|
* from chat.c.
|
|
*/
|
|
|
|
#define LOCK_PREFIX "/usr/spool/uucp/LCK.."
|
|
|
|
/*
|
|
* lock - create a lock file for the named device
|
|
*/
|
|
int
|
|
lock(dev)
|
|
char *dev;
|
|
{
|
|
int fd, pid, n;
|
|
char *p;
|
|
size_t l;
|
|
|
|
if ((p = strrchr(dev, '/')) != NULL)
|
|
dev = p + 1;
|
|
l = strlen(LOCK_PREFIX) + strlen(dev) + 1;
|
|
lock_file = malloc(l);
|
|
if (lock_file == NULL)
|
|
novm("lock file name");
|
|
slprintf(lock_file, l, "%s%s, LOCK_PREFIX, dev);
|
|
|
|
while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
|
|
if (errno == EEXIST
|
|
&& (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
|
|
/* Read the lock file to find out who has the device locked */
|
|
n = read(fd, &pid, sizeof(pid));
|
|
if (n <= 0) {
|
|
error("Can't read pid from lock file %s", lock_file);
|
|
close(fd);
|
|
} else {
|
|
if (kill(pid, 0) == -1 && errno == ESRCH) {
|
|
/* pid no longer exists - remove the lock file */
|
|
if (unlink(lock_file) == 0) {
|
|
close(fd);
|
|
notice("Removed stale lock on %s (pid %d)",
|
|
dev, pid);
|
|
continue;
|
|
} else
|
|
warn("Couldn't remove stale lock on %s",
|
|
dev);
|
|
} else
|
|
notice("Device %s is locked by pid %d",
|
|
dev, pid);
|
|
}
|
|
close(fd);
|
|
} else
|
|
error("Can't create lock file %s: %m", lock_file);
|
|
free(lock_file);
|
|
lock_file = NULL;
|
|
return -1;
|
|
}
|
|
|
|
pid = getpid();
|
|
write(fd, &pid, sizeof pid);
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* unlock - remove our lockfile
|
|
*/
|
|
void
|
|
unlock()
|
|
{
|
|
if (lock_file) {
|
|
unlink(lock_file);
|
|
free(lock_file);
|
|
lock_file = NULL;
|
|
}
|
|
}
|