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ppp/pppd/sys-NeXT.c
Paul Mackerras a3630de20e Fix the rcsid's for non-ansi compilers
1999-08-13 06:46:23 +00:00

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/*
* sys-next.c - System-dependent procedures for setting up
* PPP interfaces on NeXT 3.2/3.3 systems
*
* Copyright (c) 1989 Carnegie Mellon University.
* Copyright (c) 1994 Philippe-Andre Prindeville.
* 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.
*/
#define RCSID "$Id: sys-NeXT.c,v 1.20 1999/08/13 06:46:17 paulus Exp $"
#include <stdio.h>
#include <termios.h>
#include <utmp.h>
#include <unistd.h>
#include <stdlib.h>
#include <libc.h>
#include <strings.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 <sys/fcntl.h>
#include <net/if.h>
#include <net/ppp_defs.h>
#include <net/if_ppp.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#if !(NS_TARGET >= 40)
/* XXX get an error "duplicate member ip_v under 4.1 GAMMA */
#include <netinet/ip.h>
#endif /* NS_TARGET */
#include <netinet/if_ether.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinfo/ni.h>
#include "pppd.h"
static const char rcsid[] = RCSID;
static int initdisc = -1; /* Initial TTY discipline */
static int initfdflags = -1; /* Initial file descriptor flags for fd */
static int ppp_fd = -1; /* fd which is set to PPP discipline */
static int loop_slave = -1;
static int loop_master;
static char loop_name[20];
static fd_set in_fds; /* set of fds that wait_input waits for */
static int max_in_fd; /* highest fd set in in_fds */
extern int errno;
static int restore_term; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
static int sockfd; /* socket for doing interface ioctls */
static int pppdev; /* +++ */
#if defined(i386) && defined(HAS_BROKEN_IOCTL)
#define ioctl myioctl
#endif
static int if_is_up; /* the interface is currently up */
static u_int32_t default_route_gateway; /* gateway addr for default route */
static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
/* Prototypes for procedures local to this file. */
static int translate_speed __P((int));
static int baud_rate_of __P((int));
static int dodefaultroute __P((u_int32_t, int));
static int get_ether_addr __P((u_int32_t, struct sockaddr *));
static int ether_by_host __P((char *, struct ether_addr *));
/*
* sys_init - System-dependent initialization.
*/
void
sys_init()
{
openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
setlogmask(LOG_UPTO(LOG_INFO));
/* Get an internet socket for doing socket ioctl's on. */
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
fatal("Couldn't create IP socket: %m");
if((pppdev = open("/dev/ppp0", O_RDWR, O_NONBLOCK)) == NULL)
fatal("Couldn't open /dev/ppp0: %m");
FD_ZERO(&in_fds);
max_in_fd = 0;
}
/*
* sys_cleanup - restore any system state we modified before exiting:
* mark the interface down, delete default route and/or proxy arp entry.
* This should call die() because it's called from die().
*/
void
sys_cleanup()
{
struct ifreq ifr;
if (if_is_up) {
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
&& ((ifr.ifr_flags & IFF_UP) != 0)) {
ifr.ifr_flags &= ~IFF_UP;
ioctl(sockfd, SIOCSIFFLAGS, &ifr);
}
}
if (default_route_gateway)
cifdefaultroute(0, 0, default_route_gateway);
if (proxy_arp_addr)
cifproxyarp(0, proxy_arp_addr);
close(pppdev);
}
/*
* 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;
extern char *no_ppp_msg;
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
return 1; /* can't tell - maybe we're not root */
strlcpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
close(s);
no_ppp_msg = "\
This system lacks kernel support for PPP. To include PPP support\n\
in the kernel, please follow the steps detailed in the README.NeXT\n\
file in the ppp-2.2 distribution.\n";
return ok;
}
/*
* establish_ppp - Turn the serial port into a ppp interface.
*/
int
establish_ppp(fd)
int fd;
{
int pppdisc = PPPDISC;
int x;
if (ioctl(fd, TIOCGETD, &initdisc) < 0)
fatal("ioctl(TIOCGETD): %m");
if (ioctl(fd, TIOCSETD, &pppdisc) < 0)
fatal("ioctl(establish TIOCSETD): %m");
/*
* Find out which interface we were given.
*/
if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0)
fatal("ioctl(PPPIOCGUNIT): %m");
/*
* Enable debug in the driver if requested.
*/
if (kdebugflag) {
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
warn("ioctl(PPPIOCGFLAGS): %m");
} else {
x |= (kdebugflag & 0xFF) * SC_DEBUG;
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
warn("ioctl(PPPIOCSFLAGS): %m");
}
}
/*
* Set device for non-blocking reads so PPPD can poll for
* input from the kernel.
*/
if ((initfdflags = fcntl(fd, F_GETFL)) == -1
|| fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
warn("Couldn't set device to non-blocking mode: %m");
}
return fd;
}
/*
* disestablish_ppp - Restore the serial port to normal operation.
* This shouldn't call die() because it's called from die().
*/
void
disestablish_ppp(fd)
int fd;
{
/* Reset non-blocking mode on fd. */
if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
warn("Couldn't restore device fd flags: %m");
initfdflags = -1;
/* Restore old line discipline. */
if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
error("ioctl(TIOCSETD): %m");
initdisc = -1;
}
/*
* Check whether the link seems not to be 8-bit clean.
*/
void
clean_check()
{
int x;
char *s;
if (ioctl(ttyfd, 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) {
warn("Serial link is not 8-bit clean:");
warn("All received characters had %s", s);
}
}
}
/*
* List of valid speeds.
*/
struct speed {
int speed_int, speed_val;
} speeds[] = {
#ifdef B50
{ 50, B50 },
#endif
#ifdef B75
{ 75, B75 },
#endif
#ifdef B110
{ 110, B110 },
#endif
#ifdef B134
{ 134, B134 },
#endif
#ifdef B150
{ 150, B150 },
#endif
#ifdef B200
{ 200, B200 },
#endif
#ifdef B300
{ 300, B300 },
#endif
#ifdef B600
{ 600, B600 },
#endif
#ifdef B1200
{ 1200, B1200 },
#endif
#ifdef B1800
{ 1800, B1800 },
#endif
#ifdef B2000
{ 2000, B2000 },
#endif
#ifdef B2400
{ 2400, B2400 },
#endif
#ifdef B3600
{ 3600, B3600 },
#endif
#ifdef B4800
{ 4800, B4800 },
#endif
#ifdef B7200
{ 7200, B7200 },
#endif
#ifdef B9600
{ 9600, B9600 },
#endif
#ifdef B19200
{ 19200, B19200 },
#endif
#ifdef B38400
{ 38400, B38400 },
#endif
#ifdef EXTA
{ 19200, EXTA },
#endif
#ifdef EXTB
{ 38400, EXTB },
#endif
#ifdef B14400
{ 14400, B14400 },
#endif
#ifdef B28800
{ 28800, B28800 },
#endif
#ifdef B43200
{ 43200, B43200 },
#endif
#ifdef B57600
{ 57600, B57600 },
#endif
/*
#ifndef B115200
#warning Defining B115200
#define B115200 20
#endif
*/
#ifdef B115200
{ 115200, B115200 },
#endif
{ 0, 0 }
};
/*
* Translate from bits/second to a speed_t.
*/
int
translate_speed(bps)
int bps;
{
struct speed *speedp;
if (bps == 0)
return 0;
for (speedp = speeds; speedp->speed_int; speedp++)
if (bps == speedp->speed_int)
return speedp->speed_val;
warn("speed %d not supported", bps);
return 0;
}
/*
* Translate from a speed_t to bits/second.
*/
static int
baud_rate_of(speed)
int speed;
{
struct speed *speedp;
if (speed == 0)
return 0;
for (speedp = speeds; speedp->speed_int; speedp++)
if (speed == speedp->speed_val)
return speedp->speed_int;
return 0;
}
/*
* set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
* at the requested speed, etc. If `local' is true, set CLOCAL
* regardless of whether the modem option was specified.
*/
void
set_up_tty(fd, local)
int fd, local;
{
int speed, x, modembits;
struct termios tios;
if (tcgetattr(fd, &tios) < 0)
fatal("tcgetattr: %m");
if (!restore_term)
inittermios = tios;
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
tios.c_cflag |= CS8 | CREAD | HUPCL;
if (local || !modem)
tios.c_cflag |= CLOCAL;
tios.c_iflag = IGNBRK | IGNPAR;
tios.c_oflag = 0;
tios.c_lflag = 0;
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
if (crtscts == -2) {
tios.c_iflag |= IXON | IXOFF;
tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
}
speed = translate_speed(inspeed);
if (speed) {
cfsetospeed(&tios, speed);
cfsetispeed(&tios, speed);
} else {
speed = cfgetospeed(&tios);
/*
* We can't proceed if the serial port speed is B0,
* since that implies that the serial port is disabled.
*/
if (speed == B0)
fatal("Baud rate for %s is 0; need explicit baud rate",
devnam);
}
if (modem) {
modembits = TIOCM_RTS | TIOCM_CTS;
if (ioctl(fd, (crtscts ? TIOCMBIS : TIOCMBIC), &modembits) < 0)
error("ioctl: TIOCMBIS/BIC: %m");
}
if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
fatal("tcsetattr: %m");
baud_rate = inspeed = baud_rate_of(speed);
restore_term = 1;
}
/*
* restore_tty - restore the terminal to the saved settings.
*/
void
restore_tty(fd)
int fd;
{
if (restore_term) {
if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
if (errno != ENXIO)
warn("tcsetattr: %m");
restore_term = 0;
}
}
/*
* setdtr - control the DTR line on the serial port.
* This is called from die(), so it shouldn't call die().
*
* The write hack is to get NXFax to recognize that there is
* activity on the port. Not using the write nukes
* NXFax's capability to determine port usage.
*
*/
void
setdtr(fd, on)
int fd, on;
{
int modembits = TIOCM_DTR;
if (!on)
{
write(fd, " ", 1);
sleep(1);
}
/* ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); */
ioctl(fd, (on? TIOCSDTR: TIOCCDTR), 0);
}
/*
* 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 == EWOULDBLOCK || errno == ENOBUFS
|| errno == ENXIO || errno == EIO) {
warn("write: warning: %m");
} else {
fatal("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(max_in_fd + 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);
}
/*
* 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) {
SYSDEBUG(("read: %m"));
return -1;
}
fatal("read: %m");
}
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_int32_t asyncmap;
int pcomp, accomp;
{
u_int x;
struct ifreq ifr;
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
ifr.ifr_mtu = mtu;
if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
fatal("ioctl(SIOCSIFMTU): %m");
if (ioctl(ttyfd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0)
fatal("ioctl(PPPIOCSASYNCMAP): %m");
if (ioctl(ttyfd, 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(ttyfd, 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(ttyfd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
warn("ioctl(PPPIOCSXASYNCMAP): %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(ttyfd, PPPIOCSMRU, (caddr_t) &mru) < 0)
fatal("ioctl(PPPIOCSMRU): %m");
if (ioctl(ttyfd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0)
fatal("ioctl(PPPIOCSRASYNCMAP): %m");
if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0)
fatal("ioctl(PPPIOCGFLAGS): %m");
x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
fatal("ioctl(PPPIOCSFLAGS): %m");
}
/*
* ccp_test - ask kernel whether a given compression method
* is acceptable for use.
*/
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(ttyfd, 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(ttyfd, 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(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
error("ioctl(PPPIOCGFLAGS): %m");
return 0;
}
return x & SC_DC_FERROR;
}
/*
* sifvjcomp - config tcp header compression
*/
int
sifvjcomp(u, vjcomp, cidcomp, maxcid)
int u, vjcomp, cidcomp, maxcid;
{
u_int x;
if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
error("ioctl(PPIOCGFLAGS): %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(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
error("ioctl(PPPIOCSFLAGS): %m");
return 0;
}
if (ioctl(ttyfd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
error("ioctl(PPPIOCSFLAGS): %m");
return 0;
}
return 1;
}
/*
* sifup - Config the interface up and enable IP packets to pass.
*/
#ifndef SC_ENABLE_IP
#define SC_ENABLE_IP 0x100 /* compat for old versions of kernel code */
#endif
int
sifup(u)
int u;
{
struct ifreq ifr;
u_int x;
struct npioctl npi;
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;
npi.protocol = PPP_IP;
npi.mode = NPMODE_PASS;
if (ioctl(ttyfd, PPPIOCSNPMODE, &npi) < 0) {
if (errno != ENOTTY) {
error("ioctl(PPPIOCSNPMODE): %m");
return 0;
}
/* for backwards compatibility */
if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
error("ioctl (PPPIOCGFLAGS): %m");
return 0;
}
x |= SC_ENABLE_IP;
if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
error("ioctl(PPPIOCSFLAGS): %m");
return 0;
}
}
return 1;
}
/*
* sifdown - Config the interface down and disable IP.
*/
int
sifdown(u)
int u;
{
struct ifreq ifr;
u_int x;
int rv;
struct npioctl npi;
rv = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_ERROR;
ioctl(ttyfd, PPPIOCSNPMODE, (caddr_t) &npi);
/* ignore errors, because ttyfd 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);
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
error("ioctl(SIOCAIFADDR): %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;
}
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;
}
}
return ret;
}
/*
* cifaddr - Clear the interface IP addresses, and delete routes
* through the interface if possible.
*
* N.B.: under NextStep, you can't *delete* an address on an interface,
* so we change it to 0.0.0.0... A real hack. But it simplifies
* reconnection on the server side.
*/
int
cifaddr(u, o, h)
int u;
u_int32_t o, h;
{
struct rtentry rt;
#if 1
h = o = 0L;
(void) sifaddr(u, o, h, 0L);
#endif
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;
{
return dodefaultroute(g, 's');
}
/*
* cifdefaultroute - delete a default route through the address given.
*/
int
cifdefaultroute(u, l, g)
int u;
u_int32_t l, g;
{
return dodefaultroute(g, 'c');
}
/*
* dodefaultroute - talk to a routing socket to add/delete a default route.
*/
int
dodefaultroute(g, cmd)
u_int32_t g;
int cmd;
{
struct rtentry rt;
SET_SA_FAMILY(rt.rt_dst, AF_INET);
((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = 0L;
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, (cmd == 's') ? SIOCADDRT : SIOCDELRT, &rt) < 0) {
error("%cifdefaultroute: ioctl(%s): %m", cmd,
(cmd == 's') ? "SIOCADDRT" : "SIOCDELRT");
return 0;
}
default_route_gateway = (cmd == 's')? g: 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("ioctl(SIOCSARP): %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("ioctl(SIOCDARP): %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
int
get_ether_addr(ipaddr, hwaddr)
u_int32_t ipaddr;
struct sockaddr *hwaddr;
{
struct ifreq *ifr, *ifend, *ifp;
u_int32_t ina, mask;
struct ether_addr dla;
struct ifreq ifreq;
struct ifconf ifc;
struct ifreq ifs[MAX_IFS];
struct hostent *hostent;
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);
/*
* Get the hostname and look for an entry using the ethers database.
* Under NeXTStep this is the best we can do for now.
*/
if ((hostent = gethostbyaddr((char*)&ina, sizeof(ina), AF_INET)) == NULL)
return 0;
if (ether_by_host(hostent->h_name, &dla)) {
info("Add entry for %s in /etc/ethers", hostent->h_name);
return 0; /* it's not there */
}
hwaddr->sa_family = AF_UNSPEC;
BCOPY(&dla, hwaddr->sa_data, sizeof(dla));
return 1;
}
static int
ether_by_host(hostname, etherptr)
char *hostname;
struct ether_addr *etherptr;
{
struct ether_addr *thisptr;
void *conn;
ni_id root;
ni_namelist val;
char path[256];
if (!ether_hostton(hostname, etherptr))
return 0;
/*
* We shall now try and
* find the address in the
* top domain of netinfo.
*/
slprintf(path, sizeof(path), "/machines/%s", hostname);
if (ni_open((void *)0, "/", &conn)
|| ni_root(conn, &root)
|| ni_pathsearch(conn, &root, path)
|| ni_lookupprop(conn, &root, "en_address", &val))
return 1;
/*
* Now we can convert the returned string into an ethernet address.
*/
strlcpy(path, val.ni_namelist_val[0], sizeof(path));
ni_free(conn);
if ((thisptr = (struct ether_addr*)ether_aton(path)) == NULL)
return 1;
BCOPY(thisptr, etherptr, sizeof(struct ether_addr));
return 0;
}
/*
* 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;
}
#if 0
/*
* daemon - Detach us from the terminal session.
*/
int
daemon(nochdir, noclose)
int nochdir, noclose;
{
int pid;
if ((pid = fork()) < 0)
return -1;
if (pid != 0)
exit(0); /* parent dies */
(void)setsid();
if (!nochdir)
chdir("/");
if (!noclose) {
fclose(stdin); /* don't need stdin, stdout, stderr */
fclose(stdout);
fclose(stderr);
}
return 0;
}
#endif
char *
strdup(s)
const char *s;
{
char *d = malloc(strlen(s) + 1);
if (d) strcpy(d, s);
return d;
}
/*
* 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)) {
strncpy(ut.ut_line, line, sizeof(ut.ut_line));
strncpy(ut.ut_name, name, sizeof(ut.ut_name));
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);
}
#if 0
/*
* Routines for locking and unlocking the serial device, moved here
* from chat.c.
*/
#define LOCK_PREFIX "/usr/spool/uucp/LCK/LCK.."
static char *lock_file;
/*
* 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;
}
}
#endif
#if defined(i386) && defined(HAS_BROKEN_IOCTL)
int
ioctl(fd, cmd, c)
int fd, cmd;
caddr_t c;
{
#undef ioctl
int ret;
#ifdef DEBUGIOCTL
int serrno;
u_char let, code, size;
size = (cmd >> 16) & IOCPARM_MASK;
let = (cmd >> 8);
code = cmd;
if (let == 't' && (75 <= code && code <= 90))
info("ioctl(%d, 0x%x ('%c', %d, %d), 0x%x)\n", fd, cmd,
let, code, size, c);
#endif
ret = ioctl(fd, cmd, c);
#ifdef DEBUGIOCTL
serrno = errno;
if (ret == -1)
info("ioctl('%c', %d, %d) errno = %d (%m)\n",
let, code, size, errno);
if (let == 't' && (75 <= code && code <= 90) && (cmd & IOC_OUT)) {
int i, len = ((cmd >> 16) & IOCPARM_MASK);
for (i = 0; i < len / 4; ++i)
info("word[%d] @ 0x%06x = 0x%x\n",
i, &((int *) c)[i],((int *)c)[i]);
}
errno = serrno;
#endif
if (ret == -1 && errno == EPERM)
errno = ret = 0;
return ret;
}
#endif /* HAS_BROKEN_IOCTL */
#if defined(FIXSIGS) && (defined (hppa) || defined(sparc))
/*
* These redefinitions of Posix functions are necessary
* because HPPA systems have an OS bug that causes
* sigaction to core dump:
*
* AlainF 9-Nov-1994 HACK FOR HP-PA/NEXTSTEP
* sigaction(3) seems broken in the HP-PA NeXTSTEP 3.2
* Posix lib. This causes pppd to SIGBUS at the expiration
* of the first timeout (_sigtramp seems to invoke
* the SIGALRM handler at an unreasonably low address).
* All calls so sigaction(3) have been changed to calls
* to sigvec(2) and sigprocmask(SIG_BLOCK,...) to
* sigblock(2).
* This is kind of a hack, especially since there are
* other routines of the Posix lib still used, but
* it worked for me.
*
* Dave Hess <David-Hess@net.tamu.edu> noted that 3.3 Sparc seems to
* have the same bug. Thus this fix has been enabled for SPARC also.
*
*
*/
int sigemptyset(sigset_t *mask)
{
*mask = 0;
}
sigaddset(sigset_t *mask, int which_sig)
{
*mask |= sigmask(which_sig);
}
int sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
{
struct sigvec sv;
static int in = 0;
sv.sv_handler = act->sa_handler;
sv.sv_mask = act->sa_mask;
sv.sv_flags = 0;
if (!in)
{
in = 1;
warn("PPPD: Inside modified HP and SPARC sigaction\n");
}
return sigvec(sig, &sv, NULL);
}
#endif
/*
* Code following is added for 2.3 compatibility
*/
/*
* 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(ttyfd, 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;
}
/*
* 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()
{
#if 0
int rv = 0;
int n;
while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) {
if (loop_chars(inbuf, n))
rv = 1;
}
if (n == 0)
fatal("eof on loopback");
if (errno != EWOULDBLOCK)
fatal("read from loopback: %m");
return rv;
#endif
return 0;
}
/*
* 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(ttyfd, PPPIOCSNPMODE, &npi) < 0) {
error("ioctl(set NP %d mode to %d): %m", proto, mode);
return 0;
}
return 1;
}
/*
* open_ppp_loopback - open the device we use for getting
* packets in demand mode, and connect it to a ppp interface.
* Here we use a pty.
*/
int
open_ppp_loopback()
{
#if 0
int flags;
struct termios tios;
int pppdisc = PPPDISC;
fatal("open_ppp_loopback called!");
if (openpty(&loop_master, &loop_slave, loop_name, NULL, NULL) < 0)
fatal("No free pty for loopback");
SYSDEBUG(("using %s for loopback", loop_name));
if (tcgetattr(loop_slave, &tios) == 0) {
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
tios.c_cflag |= CS8 | CREAD;
tios.c_iflag = IGNPAR;
tios.c_oflag = 0;
tios.c_lflag = 0;
if (tcsetattr(loop_slave, TCSAFLUSH, &tios) < 0)
warn("couldn't set attributes on loopback: %m");
}
if ((flags = fcntl(loop_master, F_GETFL)) != -1)
if (fcntl(loop_master, F_SETFL, flags | O_NONBLOCK) == -1)
warn("couldn't set loopback to nonblock: %m");
ttyfd = loop_slave;
if (ioctl(ttyfd, TIOCSETD, &pppdisc) < 0)
fatal("ioctl(TIOCSETD): %m");
/*
* Find out which interface we were given.
*/
if (ioctl(ttyfd, PPPIOCGUNIT, &ifunit) < 0)
fatal("ioctl(PPPIOCGUNIT): %m");
/*
* Enable debug in the driver if requested.
*/
if (kdebugflag) {
if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
warn("ioctl (PPPIOCGFLAGS): %m");
} else {
flags |= (kdebugflag & 0xFF) * SC_DEBUG;
if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &flags) < 0)
warn("ioctl(PPPIOCSFLAGS): %m");
}
}
return loop_master;
#endif
}
/*
* restore_loop - reattach the ppp unit to the loopback.
*/
void
restore_loop()
{
int x;
/*
* Transfer the ppp interface back to the loopback.
*/
if (ioctl(ttyfd, PPPIOCXFERUNIT, 0) < 0)
fatal("ioctl(transfer ppp unit): %m");
x = PPPDISC;
if (ioctl(loop_slave, TIOCSETD, &x) < 0)
fatal("ioctl(TIOCSETD): %m");
/*
* Check that we got the same unit again.
*/
if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0)
fatal("ioctl(PPPIOCGUNIT): %m");
if (x != ifunit)
fatal("transfer_ppp failed: wanted unit %d, got %d",
ifunit, x);
ttyfd = loop_slave;
}
/*
* Use the hostid as part of the random number seed.
*/
int
get_host_seed()
{
return gethostid();
}
/*
* sys_check_options - check the options that the user specified
*/
int
sys_check_options()
{
/*
* We don't support demand dialing yet.
*/
if (demand)
{
option_error("PPP-2.3 for NeXTSTEP does not yet support demand dialing");
return 0;
}
return 1;
}
/*
* sys_close - Clean up in a child process before execing.
*/
void
sys_close()
{
close(sockfd);
if (loop_slave >= 0) {
close(loop_slave);
close(loop_master);
}
closelog();
}
#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;
{
fd_set ready;
int n;
FD_ZERO(&ready);
FD_SET(loop_master, &ready);
n = select(loop_master + 1, &ready, NULL, &ready, timo);
if (n < 0 && errno != EINTR)
fatal("select: %m");
}
/*
* 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
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