+++ /dev/null
-/*
- * sys-aix4.c - System-dependent procedures for setting up
- * PPP interfaces on AIX systems which use the STREAMS ppp interface.
- *
- * Copyright (c) 1994-2002 Paul Mackerras. 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. 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-aix4.c,v 1.24 2004/11/04 10:02:26 paulus Exp $"
-
-/*
- * TODO:
- */
-
-#include <stdio.h>
-/*
-#include <stdlib.h>
-*/
-#include <errno.h>
-#include <termios.h>
-#include <sys/termiox.h>
-#include <fcntl.h>
-#include <string.h>
-#include <time.h>
-#include <utmp.h>
-#include <poll.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/stream.h>
-#include <sys/stropts.h>
-
-#include <net/if.h>
-#include <net/ppp_defs.h>
-#include <net/route.h>
-#include <net/if_arp.h>
-#include <netinet/in.h>
-
-#include "pppd.h"
-
-static const char rcsid[] = RCSID;
-
-#ifndef ifr_mtu
-#define ifr_mtu ifr_metric
-#endif
-
-#define MAXMODULES 10 /* max number of module names to save */
-static struct modlist {
- char modname[FMNAMESZ+1];
-} str_modules[MAXMODULES];
-static int str_module_count = 0;
-static int pushed_ppp;
-static int closed_stdio;
-
-static int restore_term; /* 1 => we've munged the terminal */
-static struct termios inittermios; /* Initial TTY termios */
-static int initfdflags = -1; /* Initial file descriptor flags for fd */
-
-static int sockfd; /* socket for doing interface ioctls */
-
-static int if_is_up; /* Interface has been marked up */
-static u_int32_t ifaddrs[2]; /* local and remote addresses */
-static u_int32_t default_route_gateway; /* Gateway for default route added */
-static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
-
-#define MAX_POLLFDS 32
-static struct pollfd pollfds[MAX_POLLFDS];
-static int n_pollfds;
-
-/* Prototypes for procedures local to this file. */
-static int translate_speed __P((int));
-static int baud_rate_of __P((int));
-static int get_ether_addr __P((u_int32_t, struct sockaddr *));
-
-
-/*
- * sys_init - System-dependent initialization.
- */
-void
-sys_init()
-{
- /* 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");
-
- n_pollfds = 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 (ifaddrs[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);
-}
-
-/*
- * 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 */
- setsid();
- if (!nochdir)
- chdir("/");
- if (!noclose) {
- fclose(stdin); /* don't need stdin, stdout, stderr */
- fclose(stdout);
- fclose(stderr);
- }
- return 0;
-}
-#endif
-
-/*
- * ppp_available - check if this kernel supports PPP.
- */
-int
-ppp_available()
-{
- int fd, ret;
-
- fd = open("/dev/tty", O_RDONLY, 0);
- if (fd < 0)
- return 1; /* can't find out - assume we have ppp */
- ret = ioctl(fd, I_FIND, "pppasync") >= 0;
- close(fd);
- return ret;
-}
-
-
-/*
- * establish_ppp - Turn the serial port into a ppp interface.
- */
-int
-establish_ppp(fd)
- int fd;
-{
- /* go through and save the name of all the modules, then pop em */
- for (;;) {
- if (ioctl(fd, I_LOOK, str_modules[str_module_count].modname) < 0 ||
- ioctl(fd, I_POP, 0) < 0)
- break;
- SYSDEBUG(("popped stream module : %s",
- str_modules[str_module_count].modname));
- str_module_count++;
- }
-
- /* now push the async/fcs module */
- if (ioctl(fd, I_PUSH, "pppasync") < 0)
- fatal("ioctl(I_PUSH, ppp_async): %m");
- /* push the compress module */
- if (ioctl(fd, I_PUSH, "pppcomp") < 0) {
- warn("ioctl(I_PUSH, ppp_comp): %m");
- }
- /* finally, push the ppp_if module that actually handles the */
- /* network interface */
- if (ioctl(fd, I_PUSH, "pppif") < 0)
- fatal("ioctl(I_PUSH, ppp_if): %m");
- pushed_ppp = 1;
- /* read mode, message non-discard mode
- if (ioctl(fd, I_SRDOPT, RMSGN) < 0)
- fatal("ioctl(I_SRDOPT, RMSGN): %m");
-*/
- /*
- * Find out which interface we were given.
- * (ppp_if handles this ioctl)
- */
- if (ioctl(fd, SIOCGETU, &ifunit) < 0)
- fatal("ioctl(SIOCGETU): %m");
-
- /* Set debug flags in driver */
- if (ioctl(fd, SIOCSIFDEBUG, kdebugflag) < 0) {
- error("ioctl(SIOCSIFDEBUG): %m");
- }
-
- /* close stdin, stdout, stderr if they might refer to the device */
- if (default_device && !closed_stdio) {
- int i;
-
- for (i = 0; i <= 2; ++i)
- if (i != fd && i != sockfd)
- close(i);
- closed_stdio = 1;
- }
-
- /*
- * 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;
-}
-
-/*
- * disestablish_ppp - Restore the serial port to normal operation.
- * It attempts to reconstruct the stream with the previously popped
- * modules. This shouldn't call die() because it's called from die().
- */
-void
-disestablish_ppp(fd)
- int fd;
-{
- int flags;
- char *s;
-
- /* Reset non-blocking mode on the file descriptor. */
- if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
- warn("Couldn't restore device fd flags: %m");
- initfdflags = -1;
-
- if (hungup) {
- /* we can't push or pop modules after the stream has hung up */
- str_module_count = 0;
- restore_term = 0; /* nor can we fix up terminal settings */
- return;
- }
-
- if (pushed_ppp) {
- /*
- * Check whether the link seems not to be 8-bit clean.
- */
- if (ioctl(fd, SIOCGIFDEBUG, (caddr_t) &flags) == 0) {
- s = NULL;
- switch (~flags & PAI_FLAGS_HIBITS) {
- case PAI_FLAGS_B7_0:
- s = "bit 7 set to 1";
- break;
- case PAI_FLAGS_B7_1:
- s = "bit 7 set to 0";
- break;
- case PAI_FLAGS_PAR_EVEN:
- s = "odd parity";
- break;
- case PAI_FLAGS_PAR_ODD:
- s = "even parity";
- break;
- }
- if (s != NULL) {
- warn("Serial link is not 8-bit clean:");
- warn("All received characters had %s", s);
- }
- }
- }
-
- while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
- ;
- pushed_ppp = 0;
-
- for (; str_module_count > 0; str_module_count--) {
- if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
- if (errno != ENXIO)
- warn("str_restore: couldn't push module %s: %m",
- str_modules[str_module_count-1].modname);
- } else {
- SYSDEBUG(("str_restore: pushed module %s",
- str_modules[str_module_count-1].modname));
- }
- }
-}
-
-
-/*
- * 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 B57600
- { 57600, B57600 },
-#endif
-#ifdef B115200
- { 115200, B115200 },
-#endif
- { 0, 0 }
-};
-
-/*
- * Translate from bits/second to a speed_t.
- */
-static 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;
- struct termios tios;
- struct termiox tiox;
-
- if (tcgetattr(fd, &tios) < 0)
- fatal("tcgetattr: %m");
-
-
- if (!restore_term)
- inittermios = tios;
-
- tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
- if (crtscts > 0) {
- bzero(&tiox, sizeof(tiox));
- ioctl(fd, TCGETX, &tiox);
- tiox.x_hflag = RTSXOFF;
- ioctl(fd, TCSETX, &tiox);
- tios.c_cflag &= ~(IXON | IXOFF);
- } else if (crtscts < 0) {
- bzero(&tiox, sizeof(tiox));
- ioctl(fd, TCGETX, &tiox);
- tiox.x_hflag &= ~RTSXOFF;
- ioctl(fd, TCSETX, &tiox);
- }
-
-
- 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 (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 (!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)
- 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().
- */
-void
-setdtr(fd, on)
-int fd, on;
-{
- int modembits = TIOCM_DTR;
-
- ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
-}
-
-
-/*
- * output - Output PPP packet.
- */
-void
-output(unit, p, len)
- int unit;
- u_char *p;
- int len;
-{
- struct strbuf str;
- int retries;
- struct pollfd pfd;
-
- if (debug)
- dbglog("sent %P", p, len);
-
- str.len = len;
- str.buf = (caddr_t) p;
- retries = 4;
- while (putmsg(ttyfd, NULL, &str, 0) < 0) {
- if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
- if (errno != ENXIO)
- error("Couldn't send packet: %m");
- break;
- }
- pfd.fd = ttyfd;
- pfd.events = POLLOUT;
- poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
- }
-}
-
-/*
- * wait_input - wait for input, for a length of time specified in *timo.
- */
-void
-wait_input(timo)
- struct timeval *timo;
-{
- int t;
-
- t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
- if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
- fatal("poll: %m");
-}
-
-/*
- * add_fd - add an fd to the set that wait_input waits for.
- */
-void add_fd(fd)
- int fd;
-{
- int n;
-
- for (n = 0; n < n_pollfds; ++n)
- if (pollfds[n].fd == fd)
- return;
- if (n_pollfds < MAX_POLLFDS) {
- pollfds[n_pollfds].fd = fd;
- pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
- ++n_pollfds;
- } else
- error("Too many inputs!");
-}
-
-/*
- * remove_fd - remove an fd from the set that wait_input waits for.
- */
-void remove_fd(fd)
- int fd;
-{
- int n;
-
- for (n = 0; n < n_pollfds; ++n) {
- if (pollfds[n].fd == fd) {
- while (++n < n_pollfds)
- pollfds[n-1] = pollfds[n];
- --n_pollfds;
- break;
- }
- }
-}
-
-
-/*
- * read_packet - get a PPP packet from the serial device.
- */
-int
-read_packet(buf)
- u_char *buf;
-{
- struct strbuf str, ctl;
- int len, i;
- unsigned char ctlbuf[16];
-
- str.maxlen = PPP_MTU + PPP_HDRLEN;
- str.buf = (caddr_t) buf;
- ctl.maxlen = sizeof(ctlbuf);
- ctl.buf = (caddr_t) ctlbuf;
- i = 0;
- len = getmsg(ttyfd, &ctl, &str, &i);
- if (len < 0) {
- if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) {
- return -1;
- }
- fatal("getmsg %m");
- }
- if (len)
- SYSDEBUG(("getmsg returned 0x%x", len));
- if (ctl.len > 0)
- notice("got ctrl msg len %d %x %x\n", ctl.len, ctlbuf[0], ctlbuf[1]);
-
- if (str.len < 0) {
- SYSDEBUG(("getmsg short return length %d", str.len));
- return -1;
- }
-
- return str.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;
-{
- int c;
- 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, SIOCSIFASYNCMAP, asyncmap) < 0)
- fatal("ioctl(SIOCSIFASYNCMAP): %m");
-
- c = (pcomp? 1: 0);
- if(ioctl(ttyfd, SIOCSIFCOMPPROT, c) < 0)
- fatal("ioctl(SIOCSIFCOMPPROT): %m");
-
- c = (accomp? 1: 0);
- if(ioctl(ttyfd, SIOCSIFCOMPAC, c) < 0)
- fatal("ioctl(SIOCSIFCOMPAC): %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, SIOCSIFXASYNCMAP, accm) < 0 && errno != ENOTTY)
- warn("ioctl(set extended ACCM): %m");
-}
-
-
-/*
- * ppp_recv_config - configure the receive-side characteristics of
- * the ppp interface.
- */
-void
-ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
- int unit, mru;
- u_int32_t asyncmap;
- int pcomp, accomp;
-{
- char c;
-
- if (ioctl(ttyfd, SIOCSIFMRU, mru) < 0) {
- error("ioctl(SIOCSIFMRU): %m");
- }
-
- if (ioctl(ttyfd, SIOCSIFRASYNCMAP, (caddr_t) asyncmap) < 0) {
- error("ioctl(SIOCSIFRASYNCMAP): %m");
- }
-
- c = 2 + (pcomp? 1: 0);
- if(ioctl(ttyfd, SIOCSIFCOMPPROT, c) < 0) {
- error("ioctl(SIOCSIFCOMPPROT): %m");
- }
-
- c = 2 + (accomp? 1: 0);
- if (ioctl(ttyfd, SIOCSIFCOMPAC, c) < 0) {
- error("ioctl(SIOCSIFCOMPAC): %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;
-
- if ((unsigned) opt_len > MAX_PPP_OPTION)
- opt_len = MAX_PPP_OPTION;
- data.length = opt_len;
- data.transmit = for_transmit;
- BCOPY(opt_ptr, data.opt_data, opt_len);
- if (ioctl(ttyfd, SIOCSCOMPRESS, &data) >= 0)
- return 1;
- return (errno == ENOSR)? 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;
-
- x = (isopen? 1: 0) + (isup? 2: 0);
- if (ioctl(ttyfd, SIOCSIFCOMP, x) < 0 && errno != ENOTTY)
- error("ioctl (SIOCSIFCOMP): %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, SIOCGIFCOMP, &x) < 0) {
- error("ioctl(SIOCGIFCOMP): %m");
- return 0;
- }
- return x & CCP_FATALERROR;
-}
-
-/*
- * sifvjcomp - config tcp header compression
- */
-int
-sifvjcomp(u, vjcomp, cidcomp, maxcid)
- int u, vjcomp, cidcomp, maxcid;
-{
- int x;
-
- x = (vjcomp? 1: 0) + (cidcomp? 0: 2) + (maxcid << 4);
- if (ioctl(ttyfd, SIOCSIFVJCOMP, x) < 0) {
- error("ioctl(SIOCSIFVJCOMP): %m");
- return 0;
- }
- return 1;
-}
-
-/*
- * sifup - Config the interface up and enable IP packets to pass.
- */
-int
-sifup(u)
- int u;
-{
- struct ifreq ifr;
-
- 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;
- 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;
-}
-
-/*
- * sifdown - Config the interface down.
- */
-int
-sifdown(u)
- int u;
-{
- struct ifreq ifr;
- int rv;
- struct npioctl npi;
-
- rv = 1;
- npi.protocol = PPP_IP;
- npi.mode = NPMODE_ERROR;
- ioctl(ttyfd, SIOCSETNPMODE, &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 - initialize a struct sockaddr, setting the sa_family field.
- */
-#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);
- if (m != 0) {
- info("Setting interface mask to %s\n", ip_ntoa(m));
- ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
- if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
- error("ioctl(SIOCSIFNETMASK): %m");
- ret = 0;
- }
- }
-
- ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
- if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
- error("ioctl(SIOCSIFADDR): %m");
- ret = 0;
- }
-
- SET_SA_FAMILY(ifr.ifr_dstaddr, AF_INET);
- ((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;
- }
-
- /* XXX is this necessary? */
- ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
- if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
- error("ioctl(SIOCSIFADDR): %m");
- ret = 0;
- }
-
- ifaddrs[0] = o;
- ifaddrs[1] = h;
- return ret;
-}
-
-/*
- * cifaddr - Clear the interface IP addresses, and delete routes
- * through the interface if possible.
- */
-int
-cifaddr(u, o, h)
- int u;
- u_int32_t o, h;
-{
- struct ortentry 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 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;
-{
- struct ortentry 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;
- rt.rt_flags = RTF_GATEWAY;
- if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
- error("default route ioctl(SIOCADDRT): %m");
- return 0;
- }
- default_route_gateway = g;
- return 1;
-}
-
-/*
- * cifdefaultroute - delete a default route through the address given.
- */
-int
-cifdefaultroute(u, l, g)
- int u;
- u_int32_t l, g;
-{
- struct ortentry 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;
- rt.rt_flags = RTF_GATEWAY;
- if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
- error("default route ioctl(SIOCDELRT): %m");
- return 0;
- }
- default_route_gateway = 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)) {
- warn("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) {
- error("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. Code borrowed from myetheraddr.c
- * in the cslip-2.6 distribution, which is subject to the following
- * copyright notice (which also applies to logwtmp below):
- *
- * Copyright (c) 1990, 1992 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that: (1) source code distributions
- * retain the above copyright notice and this paragraph in its entirety, (2)
- * distributions including binary code include the above copyright notice and
- * this paragraph in its entirety in the documentation or other materials
- * provided with the distribution, and (3) all advertising materials mentioning
- * features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
- * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
- * the University nor the names of its contributors may 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
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include <nlist.h>
-#include <arpa/inet.h>
-#include <netinet/in_var.h>
-#include <net/if_dl.h>
-
-/* Cast a struct sockaddr to a structaddr_in */
-#define SATOSIN(sa) ((struct sockaddr_in *)(sa))
-
-/* Determine if "bits" is set in "flag" */
-#define ALLSET(flag, bits) (((flag) & (bits)) == (bits))
-
-static struct nlist nl[] = {
-#define N_IFNET 0
- { "ifnet" },
- { 0 }
-};
-
-int kvm_read(int fd, off_t offset, void *buf, int nbytes)
-{
- if (lseek(fd, offset, SEEK_SET) != offset) {
- error("lseek in kmem: %m");
- return(0);
- }
- return(read(fd, buf, nbytes));
-}
-
-int
-get_ether_addr(ipaddr, hwaddr)
- u_long ipaddr;
- struct sockaddr *hwaddr;
-{
- int kd;
- register struct ifnet *ifp;
- register struct arpcom *ac;
- struct arpcom arpcom;
- struct in_addr *inp;
- register struct ifaddr *ifa;
- register struct in_ifaddr *in;
- union {
- struct ifaddr ifa;
- struct in_ifaddr in;
- } ifaddr;
- struct ifaddr *ifap;
- struct sockaddr ifaddrsaddr;
- struct sockaddr_in ifmasksaddr;
- struct sockaddr_in *ifinetptr;
- struct sockaddr_dl *iflinkptr;
- u_long addr, mask, ifip;
- int found = 0;
-
-/* Open kernel memory for reading */
- if ((kd = open("/dev/kmem", O_RDONLY)) < 0) {
- error("/dev/kmem: %m");
- return 0;
- }
-
-/* Fetch namelist */
- if (nlist("/unix", nl) != 0) {
- error("nlist(): %m");
- return 0;
- }
-
- ac = &arpcom;
- ifp = &arpcom.ac_if;
- ifa = &ifaddr.ifa;
- in = &ifaddr.in;
-
- if (kvm_read(kd, nl[N_IFNET].n_value, (char *)&addr, sizeof(addr))
- != sizeof(addr)) {
- error("error reading ifnet addr");
- return 0;
- }
- for ( ; addr && !found; addr = (u_long)ifp->if_next) {
- if (kvm_read(kd, addr, (char *)ac, sizeof(*ac)) != sizeof(*ac)) {
- error("error reading ifnet");
- return 0;
- }
-
-/* Only look at configured, broadcast interfaces */
- if (!ALLSET(ifp->if_flags, IFF_UP | IFF_BROADCAST))
- continue;
-/* This probably can't happen... */
- if (ifp->if_addrlist == 0)
- continue;
-
-/* Get interface ip address */
- for (ifap = ifp->if_addrlist; ifap; ifap=ifaddr.ifa.ifa_next) {
- if (kvm_read(kd, (u_long)ifap, (char *)&ifaddr,
- sizeof(ifaddr)) != sizeof(ifaddr)) {
- error("error reading ifaddr");
- return 0;
- }
- if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_addr, &ifaddrsaddr,
- sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
- error("error reading ifaddrsaddr");
- return(0);
- }
- if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_netmask, &ifmasksaddr,
- sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
- error("error reading ifmasksaddr");
- return(0);
- }
- /* Check if this interface on the right subnet */
- switch (ifaddrsaddr.sa_family) {
- case AF_LINK :
- hwaddr->sa_family = AF_UNSPEC;
- iflinkptr = (struct sockaddr_dl *) &ifaddrsaddr;
- bcopy(LLADDR(iflinkptr),hwaddr->sa_data,iflinkptr->sdl_alen);
- break;
- case AF_INET:
- ifinetptr= (struct sockaddr_in *) &ifaddrsaddr;
- ifip = ifinetptr->sin_addr.s_addr;
- if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_netmask, &ifmasksaddr,
- sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
- error("error reading ifmasksaddr");
- return(0);
- }
- mask = ifmasksaddr.sin_addr.s_addr;
- if ((ipaddr & mask) == (ifip & mask))
- ++found;
- break;
- default:
- break;
- }
-
- }
- }
- return(found);
-}
-
-/*
- * 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.
- */
-#define MAX_IFS 32
-
-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) {
- /*
- * 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;
-}
-
-#define WTMPFILE "/var/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);
-}
-
-/*
- * Use the hostid as part of the random number seed.
- */
-int
-get_host_seed()
-{
- return gethostid();
-}
-
-/*
- * Code for locking/unlocking the serial device.
- */
-
-static char *devlocked = (char *) 0;
-
-int lock(char *device)
-{
- char *devname;
- int rc;
-
- if (devname = strrchr(device,'/'))
- ++devname;
- else
- devname = device;
-
- if ((rc = ttylock(devname)) == 0) {
- devlocked = strdup(devname);
- } else
- devlocked = (char *) 0;
-
- return(rc);
-}
-
-int unlock()
-{
- int rc = 0;
-
- if (devlocked) {
- rc = ttyunlock(devlocked);
- free(devlocked);
- devlocked = (char *) 0;
- }
- return(rc);
-}
-
projects / ppp.git / blobdiff