* sys-bsd.c - System-dependent procedures for setting up
* PPP interfaces on bsd-4.4-ish systems (including 386BSD, NetBSD, etc.)
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1993-2002 Paul Mackerras. 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-bsd.c,v 1.15 1994/10/23 11:45:47 paulus Exp $";
-#endif
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. The name(s) of the authors of this software must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission.
+ *
+ * 3. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Paul Mackerras
+ * <paulus@samba.org>".
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Derived from main.c and pppd.h, which are:
+ *
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define RCSID "$Id: sys-bsd.c,v 1.50 2004/11/04 10:02:26 paulus Exp $"
+/* $NetBSD: sys-bsd.c,v 1.1.1.3 1997/09/26 18:53:04 christos Exp $ */
/*
* TODO:
*/
-#include <syslog.h>
+#include <stdio.h>
#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
#include <termios.h>
+#include <signal.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
-#include <sys/errno.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#ifdef NetBSD1_2
+#include <util.h>
+#endif
+#ifdef PPP_FILTER
+#include <net/bpf.h>
+#endif
#include <net/if.h>
#include <net/ppp_defs.h>
#include <netinet/in.h>
#if RTM_VERSION >= 3
+#include <sys/param.h>
+#if defined(NetBSD) && (NetBSD >= 199703)
+#include <netinet/if_inarp.h>
+#else /* NetBSD 1.2D or later */
+#ifdef __FreeBSD__
#include <netinet/if_ether.h>
+#else
+#include <net/if_ether.h>
+#endif
+#endif
#endif
#include "pppd.h"
+#include "fsm.h"
+#include "ipcp.h"
-static int initdisc = -1; /* Initial TTY discipline */
+static const char rcsid[] = RCSID;
+
+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 rtm_seq;
-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 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 fd_set in_fds; /* set of fds that wait_input waits for */
+static int max_in_fd; /* highest fd set in in_fds */
+
+static int if_is_up; /* the interface is currently up */
+static u_int32_t ifaddrs[2]; /* local and remote addresses we set */
+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 dodefaultroute __P((u_int32_t, int));
+static int get_ether_addr __P((u_int32_t, struct sockaddr_dl *));
+
/*
* sys_init - System-dependent initialization.
void
sys_init()
{
- openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
- setlogmask(LOG_UPTO(LOG_INFO));
- if (debug)
- setlogmask(LOG_UPTO(LOG_DEBUG));
+ /* 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");
+
+ FD_ZERO(&in_fds);
+ max_in_fd = 0;
}
/*
- * note_debug_level - note a change in the debug level.
+ * 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
-note_debug_level()
+sys_cleanup()
{
- if (debug) {
- syslog(LOG_INFO, "Debug turned ON, Level %d", debug);
- setlogmask(LOG_UPTO(LOG_DEBUG));
- } else {
- setlogmask(LOG_UPTO(LOG_WARNING));
+ 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 (ifaddrs[0] != 0)
+ cifaddr(0, ifaddrs[0], ifaddrs[1]);
+ if (default_route_gateway)
+ cifdefaultroute(0, 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);
+ }
+}
+
+/*
+ * sys_check_options - check the options that the user specified
+ */
+int
+sys_check_options()
+{
+#ifndef CDTRCTS
+ if (crtscts == 2) {
+ warn("DTR/CTS flow control is not supported on this system");
+ return 0;
}
+#endif
+ return 1;
}
/*
{
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 */
+ return 1; /* can't tell */
- strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
+ 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.bsd\n\
+file in the ppp-2.2 distribution.\n";
return ok;
}
/*
* establish_ppp - Turn the serial port into a ppp interface.
*/
-void
-establish_ppp()
+int
+establish_ppp(fd)
+ int fd;
{
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);
+ if (demand) {
+ /*
+ * Demand mode - prime the old ppp device to relinquish the unit.
+ */
+ if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0)
+ fatal("ioctl(transfer ppp unit): %m");
}
/*
- * Find out which interface we were given.
+ * Save the old line discipline of fd, and set it to PPP.
*/
- if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
- die(1);
+ if (ioctl(fd, TIOCGETD, &initdisc) < 0)
+ fatal("ioctl(TIOCGETD): %m");
+ if (ioctl(fd, TIOCSETD, &pppdisc) < 0)
+ fatal("ioctl(TIOCSETD): %m");
+
+ if (!demand) {
+ /*
+ * Find out which interface we were given.
+ */
+ if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0)
+ fatal("ioctl(PPPIOCGUNIT): %m");
+ } else {
+ /*
+ * Check that we got the same unit again.
+ */
+ if (ioctl(fd, PPPIOCGUNIT, &x) < 0)
+ fatal("ioctl(PPPIOCGUNIT): %m");
+ if (x != ifunit)
+ fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x);
+ x = TTYDISC;
+ ioctl(loop_slave, TIOCSETD, &x);
}
+ ppp_fd = fd;
+
/*
* Enable debug in the driver if requested.
*/
if (kdebugflag) {
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
+ warn("ioctl (PPPIOCGFLAGS): %m");
} else {
x |= (kdebugflag & 0xFF) * SC_DEBUG;
if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
- syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
+ warn("ioctl(PPPIOCSFLAGS): %m");
}
}
+
+ /*
+ * Set device for non-blocking reads.
+ */
+ 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;
+}
+
+/*
+ * 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)
+ 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);
+ ppp_fd = loop_slave;
}
* This shouldn't call die() because it's called from die().
*/
void
-disestablish_ppp()
+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;
+
+ 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 (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(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) {
+ warn("Serial link is not 8-bit clean:");
+ warn("All received characters had %s", s);
}
- if (ioctl(fd, TIOCSETD, &initdisc) < 0)
- syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
}
}
-
/*
* 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
*
* For *BSD, we assume that speed_t values numerically equal bits/second.
*/
+void
set_up_tty(fd, local)
int fd, local;
{
struct termios tios;
- if (tcgetattr(fd, &tios) < 0) {
- syslog(LOG_ERR, "tcgetattr: %m");
- die(1);
- }
+ if (tcgetattr(fd, &tios) < 0)
+ fatal("tcgetattr: %m");
- if (!restore_term)
+ if (!restore_term) {
inittermios = tios;
+ ioctl(fd, TIOCGWINSZ, &wsinfo);
+ }
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
- if (crtscts > 0)
- tios.c_cflag |= CRTSCTS;
- else if (crtscts < 0)
+ if (crtscts > 0 && !local) {
+ if (crtscts == 2) {
+#ifdef CDTRCTS
+ tios.c_cflag |= CDTRCTS;
+#endif
+ } else
+ tios.c_cflag |= CRTSCTS;
+ } else if (crtscts < 0) {
tios.c_cflag &= ~CRTSCTS;
+#ifdef CDTRCTS
+ tios.c_cflag &= ~CDTRCTS;
+#endif
+ }
tios.c_cflag |= CS8 | CREAD | HUPCL;
if (local || !modem)
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
- if (crtscts == 2) {
- tios.c_iflag |= IXOFF;
+ if (crtscts == -2) {
+ tios.c_iflag |= IXON | IXOFF;
tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
}
* We can't proceed if the serial port speed is 0,
* since that implies that the serial port is disabled.
*/
- if (inspeed == 0) {
- syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
- devnam);
- die(1);
- }
+ if (inspeed == 0)
+ fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
}
baud_rate = inspeed;
- if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
- syslog(LOG_ERR, "tcsetattr: %m");
- die(1);
- }
+ if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
+ fatal("tcsetattr: %m");
restore_term = 1;
}
* restore_tty - restore the terminal to the saved settings.
*/
void
-restore_tty()
+restore_tty(fd)
+ 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");
+ warn("tcsetattr: %m");
+ ioctl(fd, TIOCSWINSZ, &wsinfo);
restore_term = 0;
}
}
* setdtr - control the DTR line on the serial port.
* This is called from die(), so it shouldn't call die().
*/
+void
setdtr(fd, on)
int fd, on;
{
ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
}
+/*
+ * get_pty - get a pty master/slave pair and chown the slave side
+ * to the uid given. Assumes slave_name points to >= 12 bytes of space.
+ */
+int
+get_pty(master_fdp, slave_fdp, slave_name, uid)
+ int *master_fdp;
+ int *slave_fdp;
+ char *slave_name;
+ int uid;
+{
+ struct termios tios;
+
+ if (openpty(master_fdp, slave_fdp, slave_name, NULL, NULL) < 0)
+ return 0;
+
+ fchown(*slave_fdp, uid, -1);
+ fchmod(*slave_fdp, S_IRUSR | S_IWUSR);
+ if (tcgetattr(*slave_fdp, &tios) == 0) {
+ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
+ tios.c_cflag |= CS8 | CREAD;
+ tios.c_iflag = IGNPAR | CLOCAL;
+ tios.c_oflag = 0;
+ tios.c_lflag = 0;
+ if (tcsetattr(*slave_fdp, TCSAFLUSH, &tios) < 0)
+ warn("couldn't set attributes on pty: %m");
+ } else
+ warn("couldn't get attributes on pty: %m");
+
+ 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()
+{
+ int flags;
+ struct termios tios;
+ int pppdisc = PPPDISC;
+
+ 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");
+
+ ppp_fd = loop_slave;
+ if (ioctl(ppp_fd, TIOCSETD, &pppdisc) < 0)
+ fatal("ioctl(TIOCSETD): %m");
+
+ /*
+ * Find out which interface we were given.
+ */
+ if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0)
+ fatal("ioctl(PPPIOCGUNIT): %m");
+
+ /*
+ * Enable debug in the driver if requested.
+ */
+ if (kdebugflag) {
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
+ warn("ioctl (PPPIOCGFLAGS): %m");
+ } else {
+ flags |= (kdebugflag & 0xFF) * SC_DEBUG;
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0)
+ warn("ioctl(PPPIOCSFLAGS): %m");
+ }
+ }
+
+ return loop_master;
+}
+
/*
* output - Output PPP packet.
u_char *p;
int len;
{
- if (unit != 0)
- MAINDEBUG((LOG_WARNING, "output: unit != 0!"));
if (debug)
- log_packet(p, len, "sent ");
+ dbglog("sent %P", p, len);
- if (write(fd, p, len) < 0) {
- syslog(LOG_ERR, "write: %m");
- die(1);
+ if (write(ttyfd, p, len) < 0) {
+ if (errno != EIO)
+ error("write: %m");
}
}
/*
- * wait_input - wait until there is data available on fd,
+ * 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;
+{
+ if (fd >= FD_SETSIZE)
+ fatal("internal error: file descriptor too large (%d)", fd);
+ FD_SET(fd, &in_fds);
+ if (fd > max_in_fd)
+ max_in_fd = fd;
+}
+
+/*
+ * remove_fd - remove an fd from the set that wait_input waits for.
+ */
+void remove_fd(fd)
+ int fd;
+{
+ FD_CLR(fd, &in_fds);
+}
+
+#if 0
+/*
+ * wait_loop_output - wait until there is data available on the
+ * loopback, for the length of time specified by *timo (indefinite
+ * if timo is NULL).
+ */
+void
+wait_loop_output(timo)
+ struct timeval *timo;
+{
+ fd_set ready;
+ int n;
+
FD_ZERO(&ready);
- FD_SET(fd, &ready);
- n = select(fd+1, &ready, NULL, &ready, timo);
- if (n < 0 && errno != EINTR) {
- syslog(LOG_ERR, "select: %m");
- die(1);
- }
+ if (loop_master >= FD_SETSIZE)
+ fatal("internal error: file descriptor too large (%d)", loop_master);
+ 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
+
+
/*
* read_packet - get a PPP packet from the serial device.
*/
{
int len;
- if ((len = read(fd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
- if (errno == EWOULDBLOCK || errno == EINTR) {
- MAINDEBUG((LOG_DEBUG, "read(fd): %m"));
+ if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
return -1;
- }
- syslog(LOG_ERR, "read(fd): %m");
- die(1);
+ fatal("read: %m");
}
return len;
}
+/*
+ * get_loop_output - read characters from the loopback, form them
+ * into frames, and detect when we want to bring the real link up.
+ * Return value is 1 if we need to bring up the link, 0 otherwise.
+ */
+int
+get_loop_output()
+{
+ 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;
+}
+
+
/*
* ppp_send_config - configure the transmit characteristics of
* the ppp interface.
u_int x;
struct ifreq ifr;
- strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
+ strlcpy(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(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
+ fatal("ioctl(SIOCSIFMTU): %m");
- if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
- quit();
- }
+ if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0)
+ fatal("ioctl(PPPIOCSASYNCMAP): %m");
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
- quit();
- }
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0)
+ fatal("ioctl (PPPIOCGFLAGS): %m");
x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
- if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
- quit();
- }
+ x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC;
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
+ fatal("ioctl(PPPIOCSFLAGS): %m");
}
int unit;
ext_accm accm;
{
- if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
- syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
+ if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
+ warn("ioctl(set extended ACCM): %m");
}
{
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();
- }
+ if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0)
+ fatal("ioctl(PPPIOCSMRU): %m");
+ if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0)
+ fatal("ioctl(PPPIOCSRASYNCMAP): %m");
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0)
+ fatal("ioctl (PPPIOCGFLAGS): %m");
x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
- if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
- quit();
- }
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
+ fatal("ioctl(PPPIOCSFLAGS): %m");
}
/*
* ccp_test - ask kernel whether a given compression method
- * is acceptable for use.
+ * is acceptable for use. Returns 1 if the method and parameters
+ * are OK, 0 if the method is known but the parameters are not OK
+ * (e.g. code size should be reduced), or -1 if the method is unknown.
*/
+int
ccp_test(unit, opt_ptr, opt_len, for_transmit)
int unit, opt_len, for_transmit;
u_char *opt_ptr;
data.ptr = opt_ptr;
data.length = opt_len;
data.transmit = for_transmit;
- return 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) {
- syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ error("ioctl (PPPIOCGFLAGS): %m");
return;
}
x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
- if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
+ error("ioctl(PPPIOCSFLAGS): %m");
}
/*
{
int x;
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ error("ioctl(PPPIOCGFLAGS): %m");
return 0;
}
return x & SC_DC_FERROR;
}
+/*
+ * get_idle_time - return how long the link has been idle.
+ */
+int
+get_idle_time(u, ip)
+ int u;
+ struct ppp_idle *ip;
+{
+ return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
+}
+
+/*
+ * get_ppp_stats - return statistics for the link.
+ */
+int
+get_ppp_stats(u, stats)
+ int u;
+ struct pppd_stats *stats;
+{
+ struct ifpppstatsreq req;
+
+ memset (&req, 0, sizeof (req));
+ strlcpy(req.ifr_name, ifname, 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;
+}
+
+
+#ifdef PPP_FILTER
+/*
+ * 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) {
+ error("Couldn't set pass-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ if (active->bf_len > 0) {
+ if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) {
+ error("Couldn't set active-filter in kernel: %m");
+ ret = 0;
+ }
+ }
+ return ret;
+}
+#endif
+
/*
* sifvjcomp - config tcp header compression
*/
{
u_int x;
- if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
+ if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
+ error("ioctl (PPPIOCGFLAGS): %m");
return 0;
}
x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
- if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+ if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
+ error("ioctl(PPPIOCSFLAGS): %m");
return 0;
}
- if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
- syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
+ if (vjcomp && ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
+ error("ioctl(PPPIOCSFLAGS): %m");
return 0;
}
return 1;
/*
* sifup - Config the interface up and enable IP packets to pass.
*/
-#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 (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
+ 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(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ error("ioctl(SIOCSIFFLAGS): %m");
return 0;
}
- 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_is_up = 1;
+ return 1;
+}
+
+/*
+ * sifnpmode - Set the mode for handling packets for a given NP.
+ */
+int
+sifnpmode(u, proto, mode)
+ int u;
+ int proto;
+ enum NPmode mode;
+{
+ struct npioctl npi;
+
+ npi.protocol = proto;
+ npi.mode = mode;
+ if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
+ error("ioctl(set NP %d mode to %d): %m", proto, mode);
+ return 0;
}
return 1;
}
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(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
+ 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(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ error("ioctl(SIOCSIFFLAGS): %m");
rv = 0;
- }
+ } else
+ if_is_up = 0;
}
return rv;
}
u_int32_t o, h, m;
{
struct ifaliasreq ifra;
+ struct ifreq ifr;
- strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
+ strlcpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
SET_SA_FAMILY(ifra.ifra_addr, AF_INET);
((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o;
SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET);
((struct sockaddr_in *) &ifra.ifra_mask)->sin_addr.s_addr = m;
} else
BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask));
- if (ioctl(s, SIOCAIFADDR, (caddr_t) &ifra) < 0) {
+ BZERO(&ifr, sizeof(ifr));
+ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifr) < 0) {
+ if (errno != EADDRNOTAVAIL)
+ warn("Couldn't remove interface address: %m");
+ }
+ if (ioctl(sockfd, SIOCAIFADDR, (caddr_t) &ifra) < 0) {
if (errno != EEXIST) {
- syslog(LOG_ERR, "ioctl(SIOCAIFADDR): %m");
+ error("Couldn't set interface address: %m");
return 0;
}
- syslog(LOG_WARNING, "ioctl(SIOCAIFADDR): Address already exists");
+ warn("Couldn't set interface address: Address %I already exists", o);
}
+ ifaddrs[0] = o;
+ ifaddrs[1] = h;
return 1;
}
{
struct ifaliasreq ifra;
- strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
+ ifaddrs[0] = 0;
+ strlcpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
SET_SA_FAMILY(ifra.ifra_addr, AF_INET);
((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o;
SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET);
((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h;
BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask));
- if (ioctl(s, SIOCDIFADDR, (caddr_t) &ifra) < 0) {
- syslog(LOG_WARNING, "ioctl(SIOCDIFADDR): %m");
+ if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifra) < 0) {
+ if (errno != EADDRNOTAVAIL)
+ warn("Couldn't delete interface address: %m");
return 0;
}
return 1;
* sifdefaultroute - assign a default route through the address given.
*/
int
-sifdefaultroute(u, g)
+sifdefaultroute(u, l, g)
int u;
- u_int32_t g;
+ u_int32_t l, g;
{
return dodefaultroute(g, 's');
}
* cifdefaultroute - delete a default route through the address given.
*/
int
-cifdefaultroute(u, g)
+cifdefaultroute(u, l, g)
int u;
- u_int32_t g;
+ u_int32_t l, g;
{
return dodefaultroute(g, 'c');
}
/*
* dodefaultroute - talk to a routing socket to add/delete a default route.
*/
-int
+static int
dodefaultroute(g, cmd)
u_int32_t g;
int cmd;
} rtmsg;
if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
- syslog(LOG_ERR, "%cifdefaultroute: opening routing socket: %m", cmd);
+ error("Couldn't %s default route: socket: %m",
+ cmd=='s'? "add": "delete");
return 0;
}
memset(&rtmsg, 0, sizeof(rtmsg));
rtmsg.hdr.rtm_type = cmd == 's'? RTM_ADD: RTM_DELETE;
- rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY;
+ rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
rtmsg.hdr.rtm_version = RTM_VERSION;
rtmsg.hdr.rtm_seq = ++rtm_seq;
rtmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
rtmsg.hdr.rtm_msglen = sizeof(rtmsg);
if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) {
- syslog(LOG_ERR, "%s default route: %m", cmd=='s'? "add": "delete");
+ error("Couldn't %s default route: %m",
+ cmd=='s'? "add": "delete");
close(routes);
return 0;
}
close(routes);
+ default_route_gateway = (cmd == 's')? g: 0;
return 1;
}
u_int32_t hisaddr;
{
int routes;
- int l;
/*
* Get the hardware address of an interface on the same subnet
*/
memset(&arpmsg, 0, sizeof(arpmsg));
if (!get_ether_addr(hisaddr, &arpmsg.hwa)) {
- syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
+ error("Cannot determine ethernet address for proxy ARP");
return 0;
}
if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
- syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+ error("Couldn't add proxy arp entry: socket: %m");
return 0;
}
arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg
+ arpmsg.hwa.sdl_len;
if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
- syslog(LOG_ERR, "add proxy arp entry: %m");
+ error("Couldn't add proxy arp entry: %m");
close(routes);
return 0;
}
close(routes);
arpmsg_valid = 1;
+ proxy_arp_addr = hisaddr;
return 1;
}
arpmsg.hdr.rtm_seq = ++rtm_seq;
if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
- syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+ error("Couldn't delete proxy arp entry: socket: %m");
return 0;
}
if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
- syslog(LOG_ERR, "delete proxy arp entry: %m");
+ error("Couldn't delete proxy arp entry: %m");
close(routes);
return 0;
}
close(routes);
+ proxy_arp_addr = 0;
return 1;
}
* as our local address.
*/
if (!get_ether_addr(hisaddr, &dls.sdl)) {
- syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
+ 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(s, SIOCSARP, (caddr_t)&arpreq) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
+ if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
+ error("Couldn't add proxy arp entry: %m");
return 0;
}
+ proxy_arp_addr = hisaddr;
return 1;
}
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");
+ if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
+ warn("Couldn't delete proxy arp entry: %m");
return 0;
}
+ proxy_arp_addr = 0;
return 1;
}
#endif /* RTM_VERSION */
*/
#define MAX_IFS 32
-int
+static int
get_ether_addr(ipaddr, hwaddr)
u_int32_t ipaddr;
struct sockaddr_dl *hwaddr;
ifc.ifc_len = sizeof(ifs);
ifc.ifc_req = ifs;
- if (ioctl(s, SIOCGIFCONF, &ifc) < 0) {
- syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
+ if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
+ error("ioctl(SIOCGIFCONF): %m");
return 0;
}
((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) {
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));
+ 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(s, SIOCGIFFLAGS, &ifreq) < 0)
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
continue;
if ((ifreq.ifr_flags &
(IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
/*
* Get its netmask and check that it's on the right subnet.
*/
- if (ioctl(s, SIOCGIFNETMASK, &ifreq) < 0)
+ if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
continue;
- mask = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
+ mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
if ((ipaddr & mask) != (ina & mask))
continue;
if (ifr >= ifend)
return 0;
- syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
+ info("found interface %s for proxy arp", ifr->ifr_name);
/*
* Now scan through again looking for a link-level address
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 + ifr->ifr_addr.sa_len)) {
+ /*
+ * Check the interface's internet address.
+ */
+ if (ifr->ifr_addr.sa_family != AF_INET)
+ continue;
+ ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
+ if ((ntohl(ina) & nmask) != (addr & nmask))
+ continue;
+ /*
+ * Check that the interface is up, and not point-to-point or loopback.
+ */
+ strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
+ continue;
+ if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
+ != IFF_UP)
+ continue;
+ /*
+ * Get its netmask and OR it into our mask.
+ */
+ if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
+ continue;
+ mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
+ }
+
+ return mask;
+}
+
+/*
+ * have_route_to - determine if the system has any route to
+ * a given IP address.
+ * For demand mode to work properly, we have to ignore routes
+ * through our own interface.
+ */
+int have_route_to(u_int32_t addr)
+{
+ return -1;
+}
+
+/*
+ * Use the hostid as part of the random number seed.
+ */
+int
+get_host_seed()
+{
+ return gethostid();
+}
+
+#if 0
+/*
+ * lock - create a lock file for the named lock device
+ */
+#define LOCK_PREFIX "/var/spool/lock/LCK.."
+
+static char *lock_file; /* name of lock file created */
+
+int
+lock(dev)
+ char *dev;
+{
+ char hdb_lock_buffer[12];
+ 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, hdb_lock_buffer, 11);
+ if (n <= 0) {
+ error("Can't read pid from lock file %s", lock_file);
+ close(fd);
+ } else {
+ hdb_lock_buffer[n] = 0;
+ pid = atoi(hdb_lock_buffer);
+ 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;
+ }
+
+ slprintf(hdb_lock_buffer, sizeof(hdb_lock_buffer), "%10d\n", getpid());
+ write(fd, hdb_lock_buffer, 11);
+
+ close(fd);
+ return 0;
+}
+
+/*
+ * unlock - remove our lockfile
+ */
+void
+unlock()
+{
+ if (lock_file) {
+ unlink(lock_file);
+ free(lock_file);
+ lock_file = NULL;
+ }
+}
+#endif
projects / ppp.git / blobdiff