664 lines
16 KiB
C
664 lines
16 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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* 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. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written 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 1.4 1994/05/25 06:30:49 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 <syslog.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/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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#include "ppp.h"
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static int initdisc = -1; /* Initial TTY discipline */
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extern int kdebugflag;
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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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void
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establish_ppp()
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{
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int pppdisc = PPPDISC;
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int x;
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if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
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syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
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die(1);
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}
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if (ioctl(fd, TIOCSETD, &pppdisc) < 0) {
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syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
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die(1);
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}
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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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syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
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die(1);
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}
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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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syslog(LOG_WARNING, "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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syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
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}
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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()
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{
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int x;
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char *s;
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if (initdisc >= 0) {
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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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if (ioctl(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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syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
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syslog(LOG_WARNING, "All received characters had %s", s);
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}
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}
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if (ioctl(fd, TIOCSETD, &initdisc) < 0)
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syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
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}
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}
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/*
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* output - Output PPP packet.
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*/
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void
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output(unit, p, len)
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int unit;
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u_char *p;
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int len;
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{
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if (unit != 0)
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MAINDEBUG((LOG_WARNING, "output: unit != 0!"));
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if (debug)
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log_packet(p, len, "sent ");
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if (write(fd, p, len) < 0) {
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syslog(LOG_ERR, "write: %m");
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die(1);
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}
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}
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/*
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* read_packet - get a PPP packet from the serial device.
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*/
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int
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read_packet(buf)
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u_char *buf;
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{
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int len;
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if ((len = read(fd, buf, MTU + DLLHEADERLEN)) < 0) {
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if (errno == EWOULDBLOCK) {
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MAINDEBUG((LOG_DEBUG, "read(fd): EWOULDBLOCK"));
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return -1;
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}
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syslog(LOG_ERR, "read(fd): %m");
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die(1);
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}
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return len;
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}
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/*
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* ppp_send_config - configure the transmit characteristics of
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* the ppp interface.
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*/
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void
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ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
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int unit, mtu;
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u_long asyncmap;
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int pcomp, accomp;
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{
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u_int x;
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struct ifreq ifr;
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strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
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ifr.ifr_mtu = mtu;
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if (ioctl(s, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
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quit();
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}
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if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
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quit();
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}
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
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quit();
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}
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x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
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x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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quit();
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}
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}
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/*
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* ppp_set_xaccm - set the extended transmit ACCM for the interface.
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*/
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void
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ppp_set_xaccm(unit, accm)
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int unit;
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ext_accm accm;
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{
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if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
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syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
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}
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/*
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* ppp_recv_config - configure the receive-side characteristics of
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* the ppp interface.
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*/
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void
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ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
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int unit, mru;
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u_long asyncmap;
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int pcomp, accomp;
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{
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int x;
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if (ioctl(fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
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quit();
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}
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if (ioctl(fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
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quit();
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}
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
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quit();
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}
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x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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quit();
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}
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}
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/*
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* sifvjcomp - config tcp header compression
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*/
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int
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sifvjcomp(u, vjcomp, cidcomp, maxcid)
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int u, vjcomp, cidcomp, maxcid;
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{
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u_int x;
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
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return 0;
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}
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x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
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x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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return 0;
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}
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if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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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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* sifup - Config the interface up and enable IP packets to pass.
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*/
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int
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sifup(u)
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{
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struct ifreq ifr;
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u_int x;
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strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
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if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
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return 0;
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}
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ifr.ifr_flags |= IFF_UP;
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if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
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return 0;
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}
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
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return 0;
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}
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x |= SC_ENABLE_IP;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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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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* sifdown - Config the interface down and disable IP.
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*/
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int
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sifdown(u)
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{
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struct ifreq ifr;
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u_int x;
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int rv;
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rv = 1;
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if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
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rv = 0;
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} else {
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x &= ~SC_ENABLE_IP;
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if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
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syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
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rv = 0;
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}
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}
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strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
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if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
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rv = 0;
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} else {
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ifr.ifr_flags &= ~IFF_UP;
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if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
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rv = 0;
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}
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}
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return rv;
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}
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/*
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* SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
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* if it exists.
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*/
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#define SET_SA_FAMILY(addr, family) \
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BZERO((char *) &(addr), sizeof(addr)); \
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addr.sa_family = (family);
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/*
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* sifaddr - Config the interface IP addresses and netmask.
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*/
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int
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sifaddr(u, o, h, m)
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{
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int ret;
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struct ifreq ifr;
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ret = 1;
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strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
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SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
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((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
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if (ioctl(s, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
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ret = 0;
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}
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((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
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if (ioctl(s, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
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ret = 0;
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}
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if (m != 0) {
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((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
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syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
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if (ioctl(s, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
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ret = 0;
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}
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}
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return ret;
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}
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/*
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* cifaddr - Clear the interface IP addresses, and delete routes
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* through the interface if possible.
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*/
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int
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cifaddr(u, o, h)
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{
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struct rtentry rt;
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SET_SA_FAMILY(rt.rt_dst, AF_INET);
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((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
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SET_SA_FAMILY(rt.rt_gateway, AF_INET);
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((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
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rt.rt_flags = RTF_HOST;
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if (ioctl(s, SIOCDELRT, (caddr_t) &rt) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
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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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* sifdefaultroute - assign a default route through the address given.
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*/
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int
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sifdefaultroute(u, g)
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{
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struct rtentry rt;
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SET_SA_FAMILY(rt.rt_dst, AF_INET);
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SET_SA_FAMILY(rt.rt_gateway, AF_INET);
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((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
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rt.rt_flags = RTF_GATEWAY;
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if (ioctl(s, SIOCADDRT, &rt) < 0) {
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syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
|
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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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/*
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* cifdefaultroute - delete a default route through the address given.
|
|
*/
|
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int
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cifdefaultroute(u, g)
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{
|
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struct rtentry rt;
|
|
|
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SET_SA_FAMILY(rt.rt_dst, AF_INET);
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SET_SA_FAMILY(rt.rt_gateway, AF_INET);
|
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((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
|
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rt.rt_flags = RTF_GATEWAY;
|
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if (ioctl(s, SIOCDELRT, &rt) < 0)
|
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syslog(LOG_WARNING, "default route ioctl(SIOCDELRT): %m");
|
|
}
|
|
|
|
/*
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|
* sifproxyarp - Make a proxy ARP entry for the peer.
|
|
*/
|
|
int
|
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sifproxyarp(unit, hisaddr)
|
|
int unit;
|
|
u_long hisaddr;
|
|
{
|
|
struct arpreq arpreq;
|
|
|
|
BZERO(&arpreq, sizeof(arpreq));
|
|
|
|
/*
|
|
* Get the hardware address of an interface on the same subnet
|
|
* as our local address.
|
|
*/
|
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if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
|
|
syslog(LOG_ERR, "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;
|
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arpreq.arp_flags = ATF_PERM | ATF_PUBL;
|
|
if (ioctl(s, SIOCSARP, (caddr_t)&arpreq) < 0) {
|
|
syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* cifproxyarp - Delete the proxy ARP entry for the peer.
|
|
*/
|
|
int
|
|
cifproxyarp(unit, hisaddr)
|
|
int unit;
|
|
u_long 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(s, SIOCDARP, (caddr_t)&arpreq) < 0) {
|
|
syslog(LOG_WARNING, "ioctl(SIOCDARP): %m");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* get_ether_addr - get the hardware address of an interface on the
|
|
* the same subnet as ipaddr.
|
|
*/
|
|
#define MAX_IFS 32
|
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int
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get_ether_addr(ipaddr, hwaddr)
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u_long ipaddr;
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struct sockaddr *hwaddr;
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{
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struct ifreq *ifr, *ifend, *ifp;
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u_long ina, mask;
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struct sockaddr_dl *dla;
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struct ifreq ifreq;
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struct ifconf ifc;
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struct ifreq ifs[MAX_IFS];
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ifc.ifc_len = sizeof(ifs);
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ifc.ifc_req = ifs;
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if (ioctl(s, SIOCGIFCONF, &ifc) < 0) {
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syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
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return 0;
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}
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/*
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* Scan through looking for an interface with an Internet
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* address on the same subnet as `ipaddr'.
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*/
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ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
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for (ifr = ifc.ifc_req; ifr < ifend; ) {
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if (ifr->ifr_addr.sa_family == AF_INET) {
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ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
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strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
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/*
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* Check that the interface is up, and not point-to-point
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* or loopback.
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*/
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if (ioctl(s, SIOCGIFFLAGS, &ifreq) < 0)
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continue;
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if ((ifreq.ifr_flags &
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(IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
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!= (IFF_UP|IFF_BROADCAST))
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continue;
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/*
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* Get its netmask and check that it's on the right subnet.
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*/
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if (ioctl(s, SIOCGIFNETMASK, &ifreq) < 0)
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continue;
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mask = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
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if ((ipaddr & mask) != (ina & mask))
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continue;
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break;
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}
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ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + sizeof(struct sockaddr)
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);
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}
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if (ifr >= ifend)
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return 0;
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syslog(LOG_DEBUG, "found interface %s for proxy arp", ifr->ifr_name);
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|
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/*
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* Now scan through again looking for a link-level address
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* for this interface.
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*/
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ifp = ifr;
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for (ifr = ifc.ifc_req; ifr < ifend; ) {
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if (strcmp(ifp->ifr_name, ifr->ifr_name) == 0
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&& ifr->ifr_addr.sa_family == AF_DLI) {
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/* && ifr->ifr_addr.sa_family == AF_LINK) { Per! Kolla !!! ROHACK */
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/*
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* Found the link-level address - copy it out
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*/
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dla = (struct sockaddr_dl *)&ifr->ifr_addr;
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hwaddr->sa_family = AF_UNSPEC;
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BCOPY(dla, hwaddr->sa_data, sizeof(hwaddr->sa_data));
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return 1;
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}
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ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + sizeof(struct sockaddr)
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);
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}
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return 0;
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}
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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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|
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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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|
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if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
|
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return 1; /* can't tell - maybe we're not root */
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|
|
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strncpy(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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|
|
|
return ok;
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|
}
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|
|
|
|
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/*
|
|
Seems like strdup() is not part of string package in Ultrix.
|
|
If I understood the man-page on the sun this should work.
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|
|
|
Robert Olsson
|
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*/
|
|
|
|
char *strdup( in ) char *in;
|
|
{
|
|
char* dup;
|
|
if(! (dup = (char *) malloc( strlen( in ) +1 ))) return NULL;
|
|
(void) strcpy( dup, in );
|
|
return dup;
|
|
}
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|
|
|
/*
|
|
* This logwtmp() implementation is subject to the following copyright:
|
|
*
|
|
* Copyright (c) 1988 The Regents of the University of California.
|
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* 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"
|
|
|
|
int
|
|
logwtmp(line, name, host)
|
|
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)) {
|
|
(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
|
|
(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
|
|
(void)strncpy(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);
|
|
}
|