664 lines
16 KiB
C
664 lines
16 KiB
C
|
/*
|
||
|
|
* sys-ultrix.c - System-dependent procedures for setting up
|
||
|
|
* PPP interfaces on Ultrix systems.
|
||
|
|
*
|
||
|
|
* Copyright (c) 1989 Carnegie Mellon University.
|
||
|
|
* 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 Carnegie Mellon University. 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef lint
|
||
|
|
static char rcsid[] = "$Id: sys-ultrix.c,v 1.4 1994/05/25 06:30:49 paulus Exp $";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* TODO:
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <syslog.h>
|
||
|
|
#include <utmp.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/file.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/errno.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
|
||
|
|
#include <net/if.h>
|
||
|
|
|
||
|
|
#include <net/if_ppp.h>
|
||
|
|
#include <net/route.h>
|
||
|
|
#include <netinet/in.h>
|
||
|
|
|
||
|
|
#include "pppd.h"
|
||
|
|
#include "ppp.h"
|
||
|
|
|
||
|
|
static int initdisc = -1; /* Initial TTY discipline */
|
||
|
|
extern int kdebugflag;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* establish_ppp - Turn the serial port into a ppp interface.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
establish_ppp()
|
||
|
|
{
|
||
|
|
int pppdisc = PPPDISC;
|
||
|
|
int x;
|
||
|
|
|
||
|
|
if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
|
||
|
|
die(1);
|
||
|
|
}
|
||
|
|
if (ioctl(fd, TIOCSETD, &pppdisc) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
|
||
|
|
die(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Find out which interface we were given.
|
||
|
|
*/
|
||
|
|
if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
|
||
|
|
die(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Enable debug in the driver if requested.
|
||
|
|
*/
|
||
|
|
if (kdebugflag) {
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
|
||
|
|
} else {
|
||
|
|
x |= (kdebugflag & 0xFF) * SC_DEBUG;
|
||
|
|
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
|
||
|
|
syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* disestablish_ppp - Restore the serial port to normal operation.
|
||
|
|
* This shouldn't call die() because it's called from die().
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
disestablish_ppp()
|
||
|
|
{
|
||
|
|
int x;
|
||
|
|
char *s;
|
||
|
|
|
||
|
|
if (initdisc >= 0) {
|
||
|
|
/*
|
||
|
|
* Check whether the link seems not to be 8-bit clean.
|
||
|
|
*/
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
|
||
|
|
s = NULL;
|
||
|
|
switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
|
||
|
|
case SC_RCV_B7_0:
|
||
|
|
s = "bit 7 set to 1";
|
||
|
|
break;
|
||
|
|
case SC_RCV_B7_1:
|
||
|
|
s = "bit 7 set to 0";
|
||
|
|
break;
|
||
|
|
case SC_RCV_EVNP:
|
||
|
|
s = "odd parity";
|
||
|
|
break;
|
||
|
|
case SC_RCV_ODDP:
|
||
|
|
s = "even parity";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (s != NULL) {
|
||
|
|
syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
|
||
|
|
syslog(LOG_WARNING, "All received characters had %s", s);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (ioctl(fd, TIOCSETD, &initdisc) < 0)
|
||
|
|
syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* output - Output PPP packet.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
output(unit, p, len)
|
||
|
|
int unit;
|
||
|
|
u_char *p;
|
||
|
|
int len;
|
||
|
|
{
|
||
|
|
if (unit != 0)
|
||
|
|
MAINDEBUG((LOG_WARNING, "output: unit != 0!"));
|
||
|
|
if (debug)
|
||
|
|
log_packet(p, len, "sent ");
|
||
|
|
|
||
|
|
if (write(fd, p, len) < 0) {
|
||
|
|
syslog(LOG_ERR, "write: %m");
|
||
|
|
die(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* read_packet - get a PPP packet from the serial device.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
read_packet(buf)
|
||
|
|
u_char *buf;
|
||
|
|
{
|
||
|
|
int len;
|
||
|
|
|
||
|
|
if ((len = read(fd, buf, MTU + DLLHEADERLEN)) < 0) {
|
||
|
|
if (errno == EWOULDBLOCK) {
|
||
|
|
MAINDEBUG((LOG_DEBUG, "read(fd): EWOULDBLOCK"));
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
syslog(LOG_ERR, "read(fd): %m");
|
||
|
|
die(1);
|
||
|
|
}
|
||
|
|
return len;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ppp_send_config - configure the transmit characteristics of
|
||
|
|
* the ppp interface.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
|
||
|
|
int unit, mtu;
|
||
|
|
u_long asyncmap;
|
||
|
|
int pcomp, accomp;
|
||
|
|
{
|
||
|
|
u_int x;
|
||
|
|
struct ifreq ifr;
|
||
|
|
|
||
|
|
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
||
|
|
ifr.ifr_mtu = mtu;
|
||
|
|
if (ioctl(s, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
|
||
|
|
x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
|
||
|
|
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ppp_set_xaccm - set the extended transmit ACCM for the interface.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
ppp_set_xaccm(unit, accm)
|
||
|
|
int unit;
|
||
|
|
ext_accm accm;
|
||
|
|
{
|
||
|
|
if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
|
||
|
|
syslog(LOG_WARNING, "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_long asyncmap;
|
||
|
|
int pcomp, accomp;
|
||
|
|
{
|
||
|
|
int x;
|
||
|
|
|
||
|
|
if (ioctl(fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
if (ioctl(fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
|
||
|
|
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
quit();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sifvjcomp - config tcp header compression
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sifvjcomp(u, vjcomp, cidcomp, maxcid)
|
||
|
|
int u, vjcomp, cidcomp, maxcid;
|
||
|
|
{
|
||
|
|
u_int x;
|
||
|
|
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "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(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sifup - Config the interface up and enable IP packets to pass.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sifup(u)
|
||
|
|
{
|
||
|
|
struct ifreq ifr;
|
||
|
|
u_int x;
|
||
|
|
|
||
|
|
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
||
|
|
if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
ifr.ifr_flags |= IFF_UP;
|
||
|
|
if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
x |= SC_ENABLE_IP;
|
||
|
|
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sifdown - Config the interface down and disable IP.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sifdown(u)
|
||
|
|
{
|
||
|
|
struct ifreq ifr;
|
||
|
|
u_int x;
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
rv = 1;
|
||
|
|
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
|
||
|
|
rv = 0;
|
||
|
|
} else {
|
||
|
|
x &= ~SC_ENABLE_IP;
|
||
|
|
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
|
||
|
|
rv = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
||
|
|
if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
|
||
|
|
rv = 0;
|
||
|
|
} else {
|
||
|
|
ifr.ifr_flags &= ~IFF_UP;
|
||
|
|
if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
|
||
|
|
rv = 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 ret;
|
||
|
|
struct ifreq ifr;
|
||
|
|
|
||
|
|
ret = 1;
|
||
|
|
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
|
||
|
|
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
|
||
|
|
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
|
||
|
|
if (ioctl(s, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
|
||
|
|
if (ioctl(s, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
if (m != 0) {
|
||
|
|
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
|
||
|
|
syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
|
||
|
|
if (ioctl(s, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* cifaddr - Clear the interface IP addresses, and delete routes
|
||
|
|
* through the interface if possible.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
cifaddr(u, o, h)
|
||
|
|
{
|
||
|
|
struct rtentry 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(s, SIOCDELRT, (caddr_t) &rt) < 0) {
|
||
|
|
syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sifdefaultroute - assign a default route through the address given.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sifdefaultroute(u, g)
|
||
|
|
{
|
||
|
|
struct rtentry 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(s, SIOCADDRT, &rt) < 0) {
|
||
|
|
syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* cifdefaultroute - delete a default route through the address given.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
cifdefaultroute(u, g)
|
||
|
|
{
|
||
|
|
struct rtentry 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(s, SIOCDELRT, &rt) < 0)
|
||
|
|
syslog(LOG_WARNING, "default route ioctl(SIOCDELRT): %m");
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sifproxyarp - Make a proxy ARP entry for the peer.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
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.
|
||
|
|
*/
|
||
|
|
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;
|
||
|
|
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
|
||
|
|
|
||
|
|
int
|
||
|
|
get_ether_addr(ipaddr, hwaddr)
|
||
|
|
u_long ipaddr;
|
||
|
|
struct sockaddr *hwaddr;
|
||
|
|
{
|
||
|
|
struct ifreq *ifr, *ifend, *ifp;
|
||
|
|
u_long ina, mask;
|
||
|
|
struct sockaddr_dl *dla;
|
||
|
|
struct ifreq ifreq;
|
||
|
|
struct ifconf ifc;
|
||
|
|
struct ifreq ifs[MAX_IFS];
|
||
|
|
|
||
|
|
ifc.ifc_len = sizeof(ifs);
|
||
|
|
ifc.ifc_req = ifs;
|
||
|
|
if (ioctl(s, SIOCGIFCONF, &ifc) < 0) {
|
||
|
|
syslog(LOG_ERR, "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; ) {
|
||
|
|
if (ifr->ifr_addr.sa_family == AF_INET) {
|
||
|
|
ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
|
||
|
|
strncpy(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(s, 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(s, SIOCGIFNETMASK, &ifreq) < 0)
|
||
|
|
continue;
|
||
|
|
mask = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
|
||
|
|
if ((ipaddr & mask) != (ina & mask))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + sizeof(struct sockaddr)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ifr >= ifend)
|
||
|
|
return 0;
|
||
|
|
syslog(LOG_DEBUG, "found interface %s for proxy arp", ifr->ifr_name);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Now scan through again looking for a link-level address
|
||
|
|
* for this interface.
|
||
|
|
*/
|
||
|
|
ifp = ifr;
|
||
|
|
for (ifr = ifc.ifc_req; ifr < ifend; ) {
|
||
|
|
if (strcmp(ifp->ifr_name, ifr->ifr_name) == 0
|
||
|
|
&& ifr->ifr_addr.sa_family == AF_DLI) {
|
||
|
|
/* && ifr->ifr_addr.sa_family == AF_LINK) { Per! Kolla !!! ROHACK */
|
||
|
|
/*
|
||
|
|
* Found the link-level address - copy it out
|
||
|
|
*/
|
||
|
|
dla = (struct sockaddr_dl *)&ifr->ifr_addr;
|
||
|
|
hwaddr->sa_family = AF_UNSPEC;
|
||
|
|
BCOPY(dla, hwaddr->sa_data, sizeof(hwaddr->sa_data));
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + sizeof(struct sockaddr)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ppp_available - check whether the system has any ppp interfaces
|
||
|
|
* (in fact we check whether we can do an ioctl on ppp0).
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
ppp_available()
|
||
|
|
{
|
||
|
|
int s, ok;
|
||
|
|
struct ifreq ifr;
|
||
|
|
|
||
|
|
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
|
||
|
|
return 1; /* can't tell - maybe we're not root */
|
||
|
|
|
||
|
|
strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
|
||
|
|
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
|
||
|
|
close(s);
|
||
|
|
|
||
|
|
return ok;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
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"
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|