2 * System-dependent procedures for pppd under SunOS 4.
4 * Copyright (c) 1994 The Australian National University.
7 * Permission to use, copy, modify, and distribute this software and its
8 * documentation is hereby granted, provided that the above copyright
9 * notice appears in all copies. This software is provided without any
10 * warranty, express or implied. The Australian National University
11 * makes no representations about the suitability of this software for
14 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
15 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
17 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
20 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
21 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
24 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
29 static char rcsid[] = "$Id: sys-sunos4.c,v 1.10 1998/11/07 06:59:31 paulus Exp $";
44 #include <sys/types.h>
45 #include <sys/param.h>
46 #include <sys/socket.h>
47 #include <sys/sockio.h>
48 #include <sys/stream.h>
49 #include <sys/stropts.h>
50 #include <sys/syslog.h>
55 #include <net/if_arp.h>
56 #include <net/nit_if.h>
57 #include <net/route.h>
58 #include <net/ppp_defs.h>
59 #include <net/pppio.h>
60 #include <netinet/in.h>
64 #if defined(sun) && defined(sparc)
67 extern void *alloca();
72 static int fdmuxid = -1;
76 static int restore_term;
77 static struct termios inittermios;
78 static struct winsize wsinfo; /* Initial window size info */
79 static pid_t parent_pid; /* PID of our parent */
81 extern u_char inpacket_buf[]; /* borrowed from main.c */
83 static int link_mtu, link_mru;
86 static int tty_nmodules;
87 static char tty_modules[NMODULES][FMNAMESZ+1];
89 static int if_is_up; /* Interface has been marked up */
90 static u_int32_t ifaddrs[2]; /* local and remote addresses */
91 static u_int32_t default_route_gateway; /* Gateway for default route added */
92 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
94 /* Prototypes for procedures local to this file. */
95 static int translate_speed __P((int));
96 static int baud_rate_of __P((int));
97 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
98 static int strioctl __P((int, int, void *, int, int));
102 * sys_init - System-dependent initialization.
109 /* Get an internet socket for doing socket ioctl's on. */
110 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
111 syslog(LOG_ERR, "Couldn't create IP socket: %m");
116 * We may want to send a SIGHUP to the session leader associated
117 * with our controlling terminal later. Because SunOS doesn't
118 * have getsid(), we make do with sending the signal to our
121 parent_pid = getppid();
124 * Open the ppp device.
126 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
128 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
132 x = PPPDBG_LOG + PPPDBG_DRIVER;
133 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
136 /* Assign a new PPA and get its unit number. */
137 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
138 syslog(LOG_ERR, "Can't create new PPP interface: %m");
143 * Open the ppp device again and push the if_ppp module on it.
145 iffd = open("/dev/ppp", O_RDWR, 0);
147 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
151 x = PPPDBG_LOG + PPPDBG_DRIVER;
152 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
154 if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) {
155 syslog(LOG_ERR, "Couldn't attach ppp interface to device: %m");
158 if (ioctl(iffd, I_PUSH, "if_ppp") < 0) {
159 syslog(LOG_ERR, "Can't push ppp interface module: %m");
163 x = PPPDBG_LOG + PPPDBG_IF;
164 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
166 if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) {
167 syslog(LOG_ERR, "Couldn't create ppp interface unit: %m");
171 if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) {
172 syslog(LOG_ERR, "Couldn't bind ppp interface to IP SAP: %m");
178 * sys_cleanup - restore any system state we modified before exiting:
179 * mark the interface down, delete default route and/or proxy arp entry.
180 * This shouldn't call die() because it's called from die().
188 cifaddr(0, ifaddrs[0], ifaddrs[1]);
189 if (default_route_gateway)
190 cifdefaultroute(0, 0, default_route_gateway);
192 cifproxyarp(0, proxy_arp_addr);
196 * sys_close - Clean up in a child process before execing.
207 * sys_check_options - check the options that the user specified
217 * daemon - Detach us from controlling terminal session.
220 daemon(nochdir, noclose)
221 int nochdir, noclose;
225 if ((pid = fork()) < 0)
228 exit(0); /* parent dies */
233 fclose(stdin); /* don't need stdin, stdout, stderr */
241 * ppp_available - check whether the system has any ppp interfaces
248 return stat("/dev/ppp", &buf) >= 0;
252 * establish_ppp - Turn the serial port into a ppp interface.
260 /* Pop any existing modules off the tty stream. */
262 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
263 || ioctl(fd, I_POP, 0) < 0)
267 /* Push the async hdlc module and the compressor module. */
268 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
269 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
272 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
273 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
277 /* Link the serial port under the PPP multiplexor. */
278 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
279 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
285 * restore_loop - reattach the ppp unit to the loopback.
286 * This doesn't need to do anything because disestablish_ppp does it.
294 * disestablish_ppp - Restore the serial port to normal operation.
295 * It attempts to reconstruct the stream with the previously popped
296 * modules. This shouldn't call die() because it's called from die().
305 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
307 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
312 while (ioctl(fd, I_POP, 0) >= 0)
314 for (i = tty_nmodules - 1; i >= 0; --i)
315 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
316 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
319 if (hungup && default_device && parent_pid > 0) {
321 * If we have received a hangup, we need to send a SIGHUP
322 * to the terminal's controlling process. The reason is
323 * that the original stream head for the terminal hasn't
324 * seen the M_HANGUP message (it went up through the ppp
325 * driver to the stream head for our fd to /dev/ppp).
326 * Actually we send the signal to the process that invoked
327 * pppd, since SunOS doesn't have getsid().
329 kill(parent_pid, SIGHUP);
335 * Check whether the link seems not to be 8-bit clean.
343 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
348 s = "bit 7 set to 1";
351 s = "bit 7 set to 0";
361 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
362 syslog(LOG_WARNING, "All received characters had %s", s);
367 * List of valid speeds.
370 int speed_int, speed_val;
442 * Translate from bits/second to a speed_t.
448 struct speed *speedp;
452 for (speedp = speeds; speedp->speed_int; speedp++)
453 if (bps == speedp->speed_int)
454 return speedp->speed_val;
455 syslog(LOG_WARNING, "speed %d not supported", bps);
460 * Translate from a speed_t to bits/second.
466 struct speed *speedp;
470 for (speedp = speeds; speedp->speed_int; speedp++)
471 if (speed == speedp->speed_val)
472 return speedp->speed_int;
477 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
478 * at the requested speed, etc. If `local' is true, set CLOCAL
479 * regardless of whether the modem option was specified.
482 set_up_tty(fd, local)
488 if (tcgetattr(fd, &tios) < 0) {
489 syslog(LOG_ERR, "tcgetattr: %m");
495 ioctl(fd, TIOCGWINSZ, &wsinfo);
498 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
500 tios.c_cflag |= CRTSCTS;
501 else if (crtscts < 0)
502 tios.c_cflag &= ~CRTSCTS;
504 tios.c_cflag |= CS8 | CREAD | HUPCL;
506 tios.c_cflag |= CLOCAL;
507 tios.c_iflag = IGNBRK | IGNPAR;
511 tios.c_cc[VTIME] = 0;
514 tios.c_iflag |= IXON | IXOFF;
515 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
516 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
519 speed = translate_speed(inspeed);
521 cfsetospeed(&tios, speed);
522 cfsetispeed(&tios, speed);
524 speed = cfgetospeed(&tios);
526 * We can't proceed if the serial port speed is 0,
527 * since that implies that the serial port is disabled.
530 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
536 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
537 syslog(LOG_ERR, "tcsetattr: %m");
541 baud_rate = inspeed = baud_rate_of(speed);
546 * restore_tty - restore the terminal to the saved settings.
553 if (!default_device) {
555 * Turn off echoing, because otherwise we can get into
556 * a loop with the tty and the modem echoing to each other.
557 * We presume we are the sole user of this tty device, so
558 * when we close it, it will revert to its defaults anyway.
560 inittermios.c_lflag &= ~(ECHO | ECHONL);
562 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
563 if (!hungup && errno != ENXIO)
564 syslog(LOG_WARNING, "tcsetattr: %m");
565 ioctl(fd, TIOCSWINSZ, &wsinfo);
571 * setdtr - control the DTR line on the serial port.
572 * This is called from die(), so it shouldn't call die().
578 int modembits = TIOCM_DTR;
580 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
584 * open_loopback - open the device we use for getting packets
585 * in demand mode. Under Solaris 2, we use our existing fd
594 * output - Output PPP packet.
607 log_packet(p, len, "sent ", LOG_DEBUG);
610 data.buf = (caddr_t) p;
612 while (putmsg(pppfd, NULL, &data, 0) < 0) {
613 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
615 syslog(LOG_ERR, "Couldn't send packet: %m");
619 pfd.events = POLLOUT;
620 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
626 * wait_input - wait until there is data available on fd,
627 * for the length of time specified by *timo (indefinite
632 struct timeval *timo;
637 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
639 pfd.events = POLLIN | POLLPRI | POLLHUP;
640 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
641 syslog(LOG_ERR, "poll: %m");
647 * wait_loop_output - wait until there is data available on the
648 * loopback, for the length of time specified by *timo (indefinite
652 wait_loop_output(timo)
653 struct timeval *timo;
659 * wait_time - wait for a given length of time or until a
660 * signal is received.
664 struct timeval *timo;
668 n = select(0, NULL, NULL, NULL, timo);
669 if (n < 0 && errno != EINTR) {
670 syslog(LOG_ERR, "select: %m");
677 * read_packet - get a PPP packet from the serial device.
683 struct strbuf ctrl, data;
685 unsigned char ctrlbuf[64];
688 data.maxlen = PPP_MRU + PPP_HDRLEN;
689 data.buf = (caddr_t) buf;
690 ctrl.maxlen = sizeof(ctrlbuf);
691 ctrl.buf = (caddr_t) ctrlbuf;
693 len = getmsg(pppfd, &ctrl, &data, &flags);
695 if (errno = EAGAIN || errno == EINTR)
697 syslog(LOG_ERR, "Error reading packet: %m");
705 * Got a M_PROTO or M_PCPROTO message. Huh?
708 syslog(LOG_DEBUG, "got ctrl msg len=%d", ctrl.len);
714 * get_loop_output - get outgoing packets from the ppp device,
715 * and detect when we want to bring the real link up.
716 * Return value is 1 if we need to bring up the link, 0 otherwise.
724 while ((len = read_packet(inpacket_buf)) > 0) {
725 if (loop_frame(inpacket_buf, len))
732 * ppp_send_config - configure the transmit characteristics of
736 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
745 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
746 if (hungup && errno == ENXIO)
748 syslog(LOG_ERR, "Couldn't set MTU: %m");
750 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
751 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
753 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
754 cf[1] = COMP_PROT | COMP_AC;
755 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
756 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
759 /* set mtu for ip as well */
760 memset(&ifr, 0, sizeof(ifr));
761 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
762 ifr.ifr_metric = link_mtu;
763 if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
764 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
769 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
772 ppp_set_xaccm(unit, accm)
776 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
777 if (!hungup || errno != ENXIO)
778 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
783 * ppp_recv_config - configure the receive-side characteristics of
787 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
795 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
796 if (hungup && errno == ENXIO)
798 syslog(LOG_ERR, "Couldn't set MRU: %m");
800 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
801 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
803 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
804 cf[1] = DECOMP_PROT | DECOMP_AC;
805 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
806 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
811 * ccp_test - ask kernel whether a given compression method
812 * is acceptable for use.
815 ccp_test(unit, opt_ptr, opt_len, for_transmit)
816 int unit, opt_len, for_transmit;
819 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
820 opt_ptr, opt_len, 0) >= 0)
822 return (errno == ENOSR)? 0: -1;
826 * ccp_flags_set - inform kernel about the current state of CCP.
829 ccp_flags_set(unit, isopen, isup)
830 int unit, isopen, isup;
834 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
835 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
836 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
837 if (!hungup || errno != ENXIO)
838 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
843 * get_idle_time - return how long the link has been idle.
850 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
855 * ccp_fatal_error - returns 1 if decompression was disabled as a
856 * result of an error detected after decompression of a packet,
857 * 0 otherwise. This is necessary because of patent nonsense.
860 ccp_fatal_error(unit)
866 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
867 if (errno != ENXIO && errno != EINVAL)
868 syslog(LOG_ERR, "Couldn't get compression flags: %m");
871 return cf[0] & CCP_FATALERROR;
875 * sifvjcomp - config tcp header compression
878 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
879 int u, vjcomp, xcidcomp, xmaxcid;
885 maxcid[0] = xcidcomp;
886 maxcid[1] = 15; /* XXX should be rmaxcid */
887 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
888 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
892 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
893 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
894 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
895 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
897 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
904 * sifup - Config the interface up and enable IP packets to pass.
912 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
913 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
914 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
917 ifr.ifr_flags |= IFF_UP;
918 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
919 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
927 * sifdown - Config the interface down and disable IP.
935 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
936 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
937 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
940 if ((ifr.ifr_flags & IFF_UP) != 0) {
941 ifr.ifr_flags &= ~IFF_UP;
942 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
943 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
952 * sifnpmode - Set the mode for handling packets for a given NP.
955 sifnpmode(u, proto, mode)
964 if (strioctl(pppfd, PPPIO_NPMODE, npi, 2 * sizeof(int), 0) < 0) {
965 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
971 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
974 * sifaddr - Config the interface IP addresses and netmask.
983 memset(&ifr, 0, sizeof(ifr));
984 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
985 ifr.ifr_addr.sa_family = AF_INET;
986 INET_ADDR(ifr.ifr_addr) = m;
987 if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
988 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
990 ifr.ifr_addr.sa_family = AF_INET;
991 INET_ADDR(ifr.ifr_addr) = o;
992 if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
993 syslog(LOG_ERR, "Couldn't set local IP address: %m");
995 ifr.ifr_dstaddr.sa_family = AF_INET;
996 INET_ADDR(ifr.ifr_dstaddr) = h;
997 if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
998 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1000 #if 0 /* now done in ppp_send_config */
1001 ifr.ifr_metric = link_mtu;
1002 if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
1003 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1013 * cifaddr - Clear the interface IP addresses, and delete routes
1014 * through the interface if possible.
1023 bzero(&rt, sizeof(rt));
1024 rt.rt_dst.sa_family = AF_INET;
1025 INET_ADDR(rt.rt_dst) = h;
1026 rt.rt_gateway.sa_family = AF_INET;
1027 INET_ADDR(rt.rt_gateway) = o;
1028 rt.rt_flags = RTF_HOST;
1029 if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
1030 syslog(LOG_ERR, "Couldn't delete route through interface: %m");
1036 * sifdefaultroute - assign a default route through the address given.
1039 sifdefaultroute(u, l, g)
1045 bzero(&rt, sizeof(rt));
1046 rt.rt_dst.sa_family = AF_INET;
1047 INET_ADDR(rt.rt_dst) = 0;
1048 rt.rt_gateway.sa_family = AF_INET;
1049 INET_ADDR(rt.rt_gateway) = g;
1050 rt.rt_flags = RTF_GATEWAY;
1052 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
1053 syslog(LOG_ERR, "Can't add default route: %m");
1057 default_route_gateway = g;
1062 * cifdefaultroute - delete a default route through the address given.
1065 cifdefaultroute(u, l, g)
1071 bzero(&rt, sizeof(rt));
1072 rt.rt_dst.sa_family = AF_INET;
1073 INET_ADDR(rt.rt_dst) = 0;
1074 rt.rt_gateway.sa_family = AF_INET;
1075 INET_ADDR(rt.rt_gateway) = g;
1076 rt.rt_flags = RTF_GATEWAY;
1078 if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
1079 syslog(LOG_ERR, "Can't delete default route: %m");
1083 default_route_gateway = 0;
1088 * sifproxyarp - Make a proxy ARP entry for the peer.
1091 sifproxyarp(unit, hisaddr)
1095 struct arpreq arpreq;
1097 bzero(&arpreq, sizeof(arpreq));
1098 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1101 arpreq.arp_pa.sa_family = AF_INET;
1102 INET_ADDR(arpreq.arp_pa) = hisaddr;
1103 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1104 if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1105 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1109 proxy_arp_addr = hisaddr;
1114 * cifproxyarp - Delete the proxy ARP entry for the peer.
1117 cifproxyarp(unit, hisaddr)
1121 struct arpreq arpreq;
1123 bzero(&arpreq, sizeof(arpreq));
1124 arpreq.arp_pa.sa_family = AF_INET;
1125 INET_ADDR(arpreq.arp_pa) = hisaddr;
1126 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1127 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1136 * get_ether_addr - get the hardware address of an interface on the
1137 * the same subnet as ipaddr.
1142 get_ether_addr(ipaddr, hwaddr)
1144 struct sockaddr *hwaddr;
1146 struct ifreq *ifr, *ifend;
1147 u_int32_t ina, mask;
1150 struct ifreq ifs[MAX_IFS];
1153 ifc.ifc_len = sizeof(ifs);
1155 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1156 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1161 * Scan through looking for an interface with an Internet
1162 * address on the same subnet as `ipaddr'.
1164 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1165 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1166 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1167 if (ifr->ifr_addr.sa_family == AF_INET) {
1170 * Check that the interface is up, and not point-to-point
1173 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1174 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1176 if ((ifreq.ifr_flags &
1177 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1178 != (IFF_UP|IFF_BROADCAST))
1182 * Get its netmask and check that it's on the right subnet.
1184 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1186 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1187 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1188 if ((ipaddr & mask) != (ina & mask))
1197 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1200 * Grab the physical address for this interface.
1202 if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
1203 syslog(LOG_ERR, "Couldn't open /dev/nit: %m");
1206 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1207 if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
1208 || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
1209 syslog(LOG_ERR, "Couldn't get hardware address for %s: %m",
1215 hwaddr->sa_family = AF_UNSPEC;
1216 memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
1221 #define WTMPFILE "/usr/adm/wtmp"
1224 logwtmp(line, name, host)
1225 const char *line, *name, *host;
1231 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1233 if (!fstat(fd, &buf)) {
1234 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1235 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1236 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1237 (void)time(&ut.ut_time);
1238 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1239 (void)ftruncate(fd, buf.st_size);
1245 * Return user specified netmask, modified by any mask we might determine
1246 * for address `addr' (in network byte order).
1247 * Here we scan through the system's list of interfaces, looking for
1248 * any non-point-to-point interfaces which might appear to be on the same
1249 * network as `addr'. If we find any, we OR in their netmask to the
1250 * user-specified netmask.
1256 u_int32_t mask, nmask, ina;
1257 struct ifreq *ifr, *ifend, ifreq;
1261 if (IN_CLASSA(addr)) /* determine network mask for address class */
1262 nmask = IN_CLASSA_NET;
1263 else if (IN_CLASSB(addr))
1264 nmask = IN_CLASSB_NET;
1266 nmask = IN_CLASSC_NET;
1267 /* class D nets are disallowed by bad_ip_adrs */
1268 mask = netmask | htonl(nmask);
1271 * Scan through the system's network interfaces.
1273 ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
1274 ifc.ifc_req = alloca(ifc.ifc_len);
1275 if (ifc.ifc_req == 0)
1277 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1278 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1281 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1282 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1284 * Check the interface's internet address.
1286 if (ifr->ifr_addr.sa_family != AF_INET)
1288 ina = INET_ADDR(ifr->ifr_addr);
1289 if ((ntohl(ina) & nmask) != (addr & nmask))
1292 * Check that the interface is up, and not point-to-point or loopback.
1294 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1295 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1297 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1301 * Get its netmask and OR it into our mask.
1303 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1305 mask |= INET_ADDR(ifreq.ifr_addr);
1312 strioctl(fd, cmd, ptr, ilen, olen)
1313 int fd, cmd, ilen, olen;
1316 struct strioctl str;
1322 if (ioctl(fd, I_STR, &str) == -1)
1324 if (str.ic_len != olen)
1325 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1326 olen, str.ic_len, cmd);
1331 * Use the hostid as part of the random number seed.
1340 * Code for locking/unlocking the serial device.
1341 * This code is derived from chat.c.
1344 #if !defined(HDB) && !defined(SUNOS3)
1345 #define HDB 1 /* ascii lock files are the default */
1351 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1353 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1355 #endif /* LOCK_DIR */
1357 static char *lock_file; /* name of lock file created */
1360 * lock - create a lock file for the named device.
1366 char hdb_lock_buffer[12];
1370 if ((p = strrchr(dev, '/')) != NULL)
1372 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1373 if (lock_file == NULL)
1374 novm("lock file name");
1375 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1377 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1379 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1380 /* Read the lock file to find out who has the device locked */
1382 n = read(fd, hdb_lock_buffer, 11);
1384 hdb_lock_buffer[n] = 0;
1385 pid = atoi(hdb_lock_buffer);
1388 n = read(fd, &pid, sizeof(pid));
1391 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1394 if (kill(pid, 0) == -1 && errno == ESRCH) {
1395 /* pid no longer exists - remove the lock file */
1396 if (unlink(lock_file) == 0) {
1398 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1402 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1405 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1410 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1417 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1418 write(fd, hdb_lock_buffer, 11);
1421 write(fd, &pid, sizeof pid);
1429 * unlock - remove our lockfile
1442 * SunOS doesn't have strtoul :-(
1445 strtoul(str, ptr, base)
1449 return (unsigned long) strtol(str, ptr, base);
1455 extern char *sys_errlist[];
1456 extern int sys_nerr;
1462 static char unknown[32];
1464 if (n > 0 && n < sys_nerr)
1465 return sys_errlist[n];
1466 sprintf(unknown, "Error %d", n);