*
* Copyright (c) 1989 Carnegie Mellon University.
* Copyright (c) 1994 Philippe-Andre Prindeville.
+ * Copyright (c) 1995 The Australian National University.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* 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.
+ * by Carnegie Mellon University, Philippe-Andre Prindeville and
+ * The Australian National University. The names of the developers
+ * 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-NeXT.c,v 1.4 1996/01/01 23:03:23 paulus Exp $";
+static char rcsid[] = "$Id: sys-NeXT.c,v 1.5 1996/04/04 04:04:17 paulus Exp $";
#endif
#include <stdio.h>
#include "pppd.h"
-static int initdisc = -1; /* Initial TTY discipline */
-static int initfdflags = -1; /* Initial file descriptor flags for fd */
+static int initdisc = -1; /* Initial TTY discipline for ppp_fd */
+static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */
+static int ppp_fd = -1; /* fd which is set to PPP discipline */
extern int errno;
-static int restore_term; /* 1 => we've munged the terminal */
+static int restore_term; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
+static struct winsize wsinfo; /* Initial window size info */
+
+static char *lock_file; /* name of lock file created */
+
+static int loop_slave = -1;
+static int loop_master;
+static char loop_name[20];
-static char *lock_file;
+static unsigned char inbuf[512]; /* buffer for chars read from loopback */
static int sockfd; /* socket for doing interface ioctls */
#endif
static int if_is_up; /* the interface is currently up */
+static u_int32_t ifaddrs[2]; /* local and remote addresses */
static u_int32_t default_route_gateway; /* gateway addr for default route */
static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
ioctl(sockfd, SIOCSIFFLAGS, &ifr);
}
}
-
+ if (ifaddrs[0])
+ cifaddr(0, ifaddrs[0], ifaddrs[1]);
if (default_route_gateway)
cifdefaultroute(0, default_route_gateway);
if (proxy_arp_addr)
cifproxyarp(0, proxy_arp_addr);
}
+/*
+ * 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();
+}
+
+/*
+ * sys_check_options - check the options that the user specified
+ */
+void
+sys_check_options()
+{
+}
+
+
/*
* note_debug_level - note a change in the debug level.
*/
int pppdisc = PPPDISC;
int x;
+ if (demand) {
+ /*
+ * Demand mode - prime the old ppp device to relinquish the unit.
+ */
+ if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) {
+ syslog(LOG_ERR, "ioctl(transfer ppp unit): %m");
+ die(1);
+ }
+ }
+
+ /*
+ * Save the old line discipline of fd, and set it to PPP.
+ */
if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
die(1);
die(1);
}
- /*
- * Find out which interface we were given.
- */
- if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
- die(1);
+ if (!demand) {
+ /*
+ * Find out which interface we were given.
+ */
+ if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
+ syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
+ die(1);
+ }
+ } else {
+ /*
+ * Check that we got the same unit again.
+ */
+ if (ioctl(fd, PPPIOCGUNIT, &x) < 0) {
+ syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
+ die(1);
+ }
+ if (x != ifunit) {
+ syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d",
+ ifunit, x);
+ die(1);
+ }
+ x = TTYDISC;
+ ioctl(loop_slave, TIOCSETD, &x);
}
+ ppp_fd = fd;
+
/*
* Enable debug in the driver if requested.
*/
}
}
+/*
+ * restore_loop - reattach the ppp unit to the loopback.
+ */
+void
+restore_loop()
+{
+ int x;
+
+ /*
+ * Transfer the ppp interface back to the loopback.
+ */
+ if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) {
+ syslog(LOG_ERR, "ioctl(transfer ppp unit): %m");
+ die(1);
+ }
+ x = PPPDISC;
+ if (ioctl(loop_slave, TIOCSETD, &x) < 0) {
+ syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
+ die(1);
+ }
+
+ /*
+ * Check that we got the same unit again.
+ */
+ if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0) {
+ syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
+ die(1);
+ }
+ if (x != ifunit) {
+ syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d",
+ ifunit, x);
+ die(1);
+ }
+ ppp_fd = loop_slave;
+}
+
/*
* disestablish_ppp - Restore the serial port to normal operation.
disestablish_ppp(fd)
int fd;
{
- int x;
- char *s;
-
- /* Reset non-blocking mode on the file descriptor. */
+ /* Reset non-blocking mode on fd. */
if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
initfdflags = -1;
- 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);
- }
+ /* Restore old line discipline. */
+ if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
+ syslog(LOG_ERR, "ioctl(disestablish TIOCSETD): %m");
+ initdisc = -1;
+
+ if (fd == ppp_fd)
+ ppp_fd = -1;
+}
+
+/*
+ * Check whether the link seems not to be 8-bit clean.
+ */
+void
+clean_check()
+{
+ int x;
+ char *s;
+
+ if (ioctl(ppp_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(disestablish TIOCSETD): %m");
}
}
die(1);
}
- if (!restore_term)
+ if (!restore_term) {
inittermios = tios;
+ ioctl(fd, TIOCGWINSZ, &wsinfo);
+ }
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
+ if (crtscts > 0 && !local)
+ tios.c_cflag |= CRTSCTS;
+ else if (crtscts < 0)
+ tios.c_cflag &= ~CRTSCTS;
tios.c_cflag |= CS8 | CREAD | HUPCL;
if (local || !modem)
int fd;
{
if (restore_term) {
+ if (!default_device) {
+ /*
+ * Turn off echoing, because otherwise we can get into
+ * a loop with the tty and the modem echoing to each other.
+ * We presume we are the sole user of this tty device, so
+ * when we close it, it will revert to its defaults anyway.
+ */
+ inittermios.c_lflag &= ~(ECHO | ECHONL);
+ }
if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
if (errno != ENXIO)
syslog(LOG_WARNING, "tcsetattr: %m");
+ ioctl(fd, TIOCSWINSZ, &wsinfo);
restore_term = 0;
}
}
}
+/*
+ * 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.
+ */
+void
+open_ppp_loopback()
+{
+ int flags;
+ struct termios tios;
+ int pppdisc = PPPDISC;
+
+ if (openpty(&loop_master, &loop_slave, loop_name, NULL, NULL) < 0) {
+ syslog(LOG_ERR, "No free pty for loopback");
+ die(1);
+ }
+ SYSDEBUG((LOG_DEBUG, "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)
+ syslog(LOG_WARNING, "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)
+ syslog(LOG_WARNING, "couldn't set loopback to nonblock: %m");
+
+ ppp_fd = loop_slave;
+ if (ioctl(ppp_fd, TIOCSETD, &pppdisc) < 0) {
+ syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
+ die(1);
+ }
+
+ /*
+ * Find out which interface we were given.
+ */
+ if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0) {
+ syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
+ die(1);
+ }
+
+ /*
+ * Enable debug in the driver if requested.
+ */
+ if (kdebugflag) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
+ syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
+ } else {
+ flags |= (kdebugflag & 0xFF) * SC_DEBUG;
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0)
+ syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
+ }
+ }
+
+}
+
+
/*
* output - Output PPP packet.
*/
}
+/*
+ * 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).
+ */
+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) {
+ syslog(LOG_ERR, "select: %m");
+ die(1);
+ }
+}
+
+
+/*
+ * wait_time - wait for a given length of time or until a
+ * signal is received.
+ */
+wait_time(timo)
+ struct timeval *timo;
+{
+ int n;
+
+ n = select(0, NULL, NULL, NULL, timo);
+ if (n < 0 && errno != EINTR) {
+ syslog(LOG_ERR, "select: %m");
+ die(1);
+ }
+}
+
+
/*
* read_packet - get a PPP packet from the serial device.
*/
int len;
if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
- if (errno == EWOULDBLOCK || errno == EINTR) {
- MAINDEBUG((LOG_DEBUG, "read: %m"));
+ if (errno == EWOULDBLOCK || errno == EINTR)
return -1;
- }
syslog(LOG_ERR, "read: %m");
die(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()
+{
+ int rv = 0;
+ int n;
+
+ while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) {
+ if (loop_chars(inbuf, n))
+ rv = 1;
+ }
+
+ if (n == 0) {
+ syslog(LOG_ERR, "eof on loopback");
+ die(1);
+ } else if (errno != EWOULDBLOCK){
+ syslog(LOG_ERR, "read from loopback: %m");
+ die(1);
+ }
+
+ return rv;
+}
+
+
/*
* ppp_send_config - configure the transmit characteristics of
* the ppp interface.
quit();
}
- if (ioctl(ttyfd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
quit();
}
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_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(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
quit();
}
int unit;
ext_accm accm;
{
- if (ioctl(ttyfd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
- syslog(LOG_WARNING, "ioctl(PPPIOCSXASYNCMAP): %m");
+ if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
+ syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
}
{
int x;
- if (ioctl(ttyfd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
quit();
}
- if (ioctl(ttyfd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
quit();
}
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_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(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
quit();
}
/*
* ccp_test - ask kernel whether a given compression method
- * is acceptable for use.
+ * is acceptable for use. Returns 1 if the method and parameters
+ * are OK, 0 if the method is known but the parameters are not OK
+ * (e.g. code size should be reduced), or -1 if the method is unknown.
*/
int
ccp_test(unit, opt_ptr, opt_len, for_transmit)
{
int x;
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "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)
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
}
{
int x;
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
return 0;
}
return x & SC_DC_FERROR;
}
+/*
+ * get_idle_time - return how long the link has been idle.
+ */
+int
+get_idle_time(u, ip)
+ int u;
+ struct ppp_idle *ip;
+{
+ return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
+}
+
+
+/*
+ * set_filters - transfer the pass and active filters to the kernel.
+ */
+int
+set_filters(pass, active)
+ struct bpf_program *pass, *active;
+{
+ int ret = 1;
+
+ if (pass->bf_len > 0) {
+ if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) {
+ syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ if (active->bf_len > 0) {
+ if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) {
+ syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ return ret;
+}
+
+
/*
* sifvjcomp - config tcp header compression
*/
{
u_int x;
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPIOCGFLAGS): %m");
+ if (ioctl(ppp_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(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
return 0;
}
- if (ioctl(ttyfd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
return 0;
}
/*
* 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;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if_is_up = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_PASS;
- if (ioctl(ttyfd, PPPIOCSNPMODE, &npi) < 0) {
- if (errno != ENOTTY) {
- syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
- return 0;
- }
- /* for backwards compatibility */
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
- return 0;
- }
- x |= SC_ENABLE_IP;
- if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
- return 0;
- }
+ if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
+ syslog(LOG_ERR, "ioctl(set IP mode to PASS): %m");
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * sifnpmode - Set the mode for handling packets for a given NP.
+ */
+int
+sifnpmode(u, proto, mode)
+ int u;
+ int proto;
+ enum NPmode mode;
+{
+ struct npioctl npi;
+
+ npi.protocol = proto;
+ npi.mode = mode;
+ if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
+ syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
+ return 0;
}
return 1;
}
int u;
{
struct ifreq ifr;
- u_int x;
int rv;
struct npioctl npi;
rv = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_ERROR;
- if (ioctl(ttyfd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
- if (errno != ENOTTY) {
- syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
- rv = 0;
- } else {
- /* backwards compatibility */
- if (ioctl(ttyfd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
- rv = 0;
- } else {
- x &= ~SC_ENABLE_IP;
- if (ioctl(ttyfd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
- rv = 0;
- }
- }
- }
- }
+ ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi);
+ /* ignore errors, because ppp_fd might have been closed by now. */
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
ret = 1;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
+ if (m != 0) {
+ ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
+ syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
+ if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
+ syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
+ ret = 0;
+ }
+ }
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCAIFADDR): %m");
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(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
- ret = 0;
- }
- }
+ ifaddrs[0] = o;
+ ifaddrs[1] = h;
return ret;
}
h = o = 0L;
(void) sifaddr(u, o, h, 0L);
#endif
+ ifaddrs[0] = 0;
+ BZERO(&rt, sizeof(rt));
SET_SA_FAMILY(rt.rt_dst, AF_INET);
((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
{
struct rtentry rt;
+ BZERO(&rt, sizeof(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);
* PPP interfaces on Ultrix systems.
*
* Copyright (c) 1989 Carnegie Mellon University.
+ * Copyright (c) 1995 The Australian National University.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* 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.
+ * by Carnegie Mellon University and The Australian National University.
+ * The names of the Universities 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 1.15 1995/10/27 03:51:52 paulus Exp $";
+static char rcsid[] = "$Id: sys-ultrix.c,v 1.16 1996/04/04 04:04:19 paulus Exp $";
#endif
/*
#include <stdlib.h>
#include <syslog.h>
#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
#include <termios.h>
#include <utmp.h>
#include <sys/types.h>
#include "pppd.h"
-static int initdisc = -1; /* Initial TTY discipline */
-static int initfdflags = -1; /* Initial file descriptor flags for fd */
+static int initdisc = -1; /* Initial TTY discipline for ppp_fd */
+static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */
+static int ppp_fd = -1; /* fd which is set to PPP discipline */
static int restore_term; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
static char *lock_file; /* name of lock file created */
+static int loop_slave = -1;
+static int loop_master;
+static char loop_name[20];
+
+static unsigned char inbuf[512]; /* buffer for chars read from loopback */
+
static int sockfd; /* socket for doing interface ioctls */
static int if_is_up; /* the interface is currently up */
+static u_int32_t ifaddrs[2]; /* local and remote addresses */
static u_int32_t default_route_gateway; /* gateway addr for default route */
static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
ioctl(sockfd, SIOCSIFFLAGS, &ifr);
}
}
-
+ if (ifaddrs[0])
+ cifaddr(0, ifaddrs[0], ifaddrs[1]);
if (default_route_gateway)
cifdefaultroute(0, default_route_gateway);
if (proxy_arp_addr)
cifproxyarp(0, proxy_arp_addr);
}
+/*
+ * 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();
+}
+
+/*
+ * sys_check_options - check the options that the user specified
+ */
+void
+sys_check_options()
+{
+ if (demand) {
+ fprintf(stderr,
+ "Sorry - demand-dialling is not supported under Ultrix\n");
+ exit(1);
+ }
+}
+
+
/*
* note_debug_level - note a change in the debug level.
*/
* establish_ppp - Turn the serial port into a ppp interface.
*/
void
-establish_ppp()
+establish_ppp(fd)
+ int fd;
{
int pppdisc = PPPDISC;
int x;
+ /*
+ * Save the old line discipline of fd, and set it to PPP.
+ */
if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
die(1);
die(1);
}
+ ppp_fd = fd;
+
/*
* Enable debug in the driver if requested.
*/
}
}
+/*
+ * restore_loop - reattach the ppp unit to the loopback.
+ */
+void
+restore_loop()
+{
+}
/*
* disestablish_ppp - Restore the serial port to normal operation.
* This shouldn't call die() because it's called from die().
*/
void
-disestablish_ppp()
+disestablish_ppp(fd)
+ int fd;
{
- int x;
- char *s;
-
- /* Reset non-blocking mode on the file descriptor. */
+ /* Reset non-blocking mode on fd. */
if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
initfdflags = -1;
- 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);
- }
+ /* Restore old line discipline. */
+ if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
+ syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
+ initdisc = -1;
+
+ if (fd == ppp_fd)
+ ppp_fd = -1;
+}
+
+/*
+ * Check whether the link seems not to be 8-bit clean.
+ */
+void
+clean_check()
+{
+ int x;
+ char *s;
+
+ if (ioctl(ppp_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");
}
}
* restore_tty - restore the terminal to the saved settings.
*/
void
-restore_tty()
+restore_tty(fd)
+ int fd;
{
if (restore_term) {
if (!default_device) {
}
+/*
+ * open_ppp_loopback - open the device we use for getting
+ * packets in demand mode, and connect it to a ppp interface.
+ * Here we use would use a pty, except that Ultrix ptys are brain-dead.
+ */
+void
+open_ppp_loopback()
+{
+ syslog(LOG_ERR, "open_ppp_loopback called!");
+ die(1);
+}
+
+
/*
* output - Output PPP packet.
*/
if (debug)
log_packet(p, len, "sent ");
- if (write(fd, p, len) < 0) {
+ if (write(ttyfd, p, len) < 0) {
if (errno != EIO)
syslog(LOG_ERR, "write: %m");
}
/*
- * wait_input - wait until there is data available on fd,
+ * wait_input - wait until there is data available on ttyfd,
* for the length of time specified by *timo (indefinite
* if timo is NULL).
*/
int n;
FD_ZERO(&ready);
- FD_SET(fd, &ready);
- n = select(fd+1, &ready, NULL, &ready, timo);
+ FD_SET(ttyfd, &ready);
+ n = select(ttyfd+1, &ready, NULL, &ready, timo);
+ if (n < 0 && errno != EINTR) {
+ syslog(LOG_ERR, "select: %m");
+ die(1);
+ }
+}
+
+
+/*
+ * 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).
+ */
+wait_loop_output(timo)
+ struct timeval *timo;
+{
+ wait_time(timo);
+}
+
+
+/*
+ * wait_time - wait for a given length of time or until a
+ * signal is received.
+ */
+wait_time(timo)
+ struct timeval *timo;
+{
+ int n;
+
+ n = select(0, NULL, NULL, NULL, timo);
if (n < 0 && errno != EINTR) {
syslog(LOG_ERR, "select: %m");
die(1);
{
int len;
- if ((len = read(fd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
+ if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
if (errno == EWOULDBLOCK || errno == EINTR)
return -1;
syslog(LOG_ERR, "read(fd): %m");
}
+/*
+ * get_loop_output - read characters from the loopback, form them
+ * into frames, and detect when we want to bring the real link up.
+ * Return value is 1 if we need to bring up the link, 0 otherwise.
+ */
+int
+get_loop_output()
+{
+ return 0;
+}
+
+
/*
* ppp_send_config - configure the transmit characteristics of
* the ppp interface.
{
u_int x;
- if (ioctl(fd, PPPIOCSMTU, &mtu) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSMTU, &mtu) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSMTU): %m");
quit();
}
- if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
quit();
}
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_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) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
quit();
}
int unit;
ext_accm accm;
{
- if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
+ if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
}
{
int x;
- if (ioctl(fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
quit();
}
- if (ioctl(fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
quit();
}
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_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) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
quit();
}
data.ptr = opt_ptr;
data.length = opt_len;
data.transmit = for_transmit;
- if (ioctl(fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
+ if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
return 1;
return (errno == ENOBUFS)? 0: -1;
}
{
int x;
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "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(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
}
{
int x;
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
return 0;
}
return x & SC_DC_FERROR;
}
+/*
+ * get_idle_time - return how long the link has been idle.
+ */
+int
+get_idle_time(u, ip)
+ int u;
+ struct ppp_idle *ip;
+{
+ return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
+}
+
+
+/*
+ * set_filters - transfer the pass and active filters to the kernel.
+ */
+int
+set_filters(pass, active)
+ struct bpf_program *pass, *active;
+{
+ int ret = 1;
+
+ if (pass->bf_len > 0) {
+ if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) {
+ syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ if (active->bf_len > 0) {
+ if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) {
+ syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ return ret;
+}
+
+
/*
* sifvjcomp - config tcp header compression
*/
{
u_int x;
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ if (ioctl(ppp_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) {
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
return 0;
}
- if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
+ if (ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
return 0;
}
/*
* 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;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if_is_up = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_PASS;
- if (ioctl(fd, PPPIOCSNPMODE, &npi) < 0) {
- if (errno != ENOTTY) {
- syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
- return 0;
- }
- /* for backwards compatibility */
- 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;
- }
+ if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
+ syslog(LOG_ERR, "ioctl(set IP mode to PASS): %m");
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * sifnpmode - Set the mode for handling packets for a given NP.
+ */
+int
+sifnpmode(u, proto, mode)
+ int u;
+ int proto;
+ enum NPmode mode;
+{
+ struct npioctl npi;
+
+ npi.protocol = proto;
+ npi.mode = mode;
+ if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
+ syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
+ return 0;
}
return 1;
}
int u;
{
struct ifreq ifr;
- u_int x;
int rv;
struct npioctl npi;
rv = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_ERROR;
- if (ioctl(fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
- if (errno != ENOTTY) {
- syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
- rv = 0;
- } else {
- /* backwards compatibility */
- 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;
- }
- }
- }
- }
+ ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi);
+ /* ignore errors, because ppp_fd might have been closed by now. */
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
ret = 1;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
+ if (m != 0) {
+ ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
+ syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
+ if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
+ syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
+ ret = 0;
+ }
+ }
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
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(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
- ret = 0;
- }
- }
+ ifaddrs[0] = o;
+ ifaddrs[1] = h;
return ret;
}
{
struct rtentry rt;
+ ifaddrs[0] = 0;
+ BZERO(&rt, sizeof(rt));
SET_SA_FAMILY(rt.rt_dst, AF_INET);
((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
{
struct rtentry rt;
+ BZERO(&rt, sizeof(rt));
SET_SA_FAMILY(rt.rt_dst, AF_INET);
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
{
struct rtentry rt;
+ BZERO(&rt, sizeof(rt));
SET_SA_FAMILY(rt.rt_dst, AF_INET);
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
projects / ppp.git / commitdiff