2 * sys-next.c - System-dependent procedures for setting up
3 * PPP interfaces on NeXT 3.2/3.3 systems
5 * Copyright (c) 1989 Carnegie Mellon University.
6 * Copyright (c) 1994 Philippe-Andre Prindeville.
9 * Redistribution and use in source and binary forms are permitted
10 * provided that the above copyright notice and this paragraph are
11 * duplicated in all such forms and that any documentation,
12 * advertising materials, and other materials related to such
13 * distribution and use acknowledge that the software was developed
14 * by Carnegie Mellon University. The name of the
15 * University may not be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
19 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23 static char rcsid[] = "$Id: sys-NeXT.c,v 1.2 1995/10/27 03:44:56 paulus Exp $";
33 #include <sys/types.h>
35 #include <sys/socket.h>
36 #include <sys/ioctl.h>
38 #include <sys/errno.h>
40 #include <sys/fcntl.h>
43 #include <net/ppp_defs.h>
44 #include <net/if_ppp.h>
46 #include <netinet/in.h>
47 #include <netinet/in_systm.h>
48 #include <netinet/in_var.h>
49 #include <netinet/ip.h>
50 #include <netinet/if_ether.h>
51 #include <net/route.h>
52 #include <netinet/in.h>
54 #include <netinfo/ni.h>
58 static int initdisc = -1; /* Initial TTY discipline */
59 static int initfdflags = -1; /* Initial file descriptor flags for fd */
63 static int restore_term; /* 1 => we've munged the terminal */
64 static struct termios inittermios; /* Initial TTY termios */
66 static char *lock_file;
68 static int sockfd; /* socket for doing interface ioctls */
70 #if defined(i386) && defined(HAS_BROKEN_IOCTL)
74 static int if_is_up; /* the interface is currently up */
75 static u_int32_t default_route_gateway; /* gateway addr for default route */
76 static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
78 /* Prototypes for procedures local to this file. */
79 static int translate_speed __P((int));
80 static int baud_rate_of __P((int));
81 static int dodefaultroute __P((u_int32_t, int));
82 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
83 static int ether_by_host __P((char *, struct ether_addr *));
87 * sys_init - System-dependent initialization.
92 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
93 setlogmask(LOG_UPTO(LOG_INFO));
95 setlogmask(LOG_UPTO(LOG_DEBUG));
97 /* Get an internet socket for doing socket ioctl's on. */
98 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
99 syslog(LOG_ERR, "Couldn't create IP socket: %m");
105 * sys_cleanup - restore any system state we modified before exiting:
106 * mark the interface down, delete default route and/or proxy arp entry.
107 * This should call die() because it's called from die().
115 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
116 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
117 && ((ifr.ifr_flags & IFF_UP) != 0)) {
118 ifr.ifr_flags &= ~IFF_UP;
119 ioctl(sockfd, SIOCSIFFLAGS, &ifr);
123 if (default_route_gateway)
124 cifdefaultroute(0, default_route_gateway);
126 cifproxyarp(0, proxy_arp_addr);
130 * note_debug_level - note a change in the debug level.
136 syslog(LOG_INFO, "Debug turned ON, Level %d", debug);
137 setlogmask(LOG_UPTO(LOG_DEBUG));
139 setlogmask(LOG_UPTO(LOG_WARNING));
144 * ppp_available - check whether the system has any ppp interfaces
145 * (in fact we check whether we can do an ioctl on ppp0).
153 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
154 return 1; /* can't tell - maybe we're not root */
156 strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
157 ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
164 * establish_ppp - Turn the serial port into a ppp interface.
169 int pppdisc = PPPDISC;
172 if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
173 syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
176 if (ioctl(fd, TIOCSETD, &pppdisc) < 0) {
177 syslog(LOG_ERR, "ioctl(establish TIOCSETD): %m");
182 * Find out which interface we were given.
184 if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
185 syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
190 * Enable debug in the driver if requested.
193 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
194 syslog(LOG_WARNING, "ioctl(PPPIOCGFLAGS): %m");
196 x |= (kdebugflag & 0xFF) * SC_DEBUG;
197 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
198 syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
203 * Set device for non-blocking reads.
205 if ((initfdflags = fcntl(fd, F_GETFL)) == -1
206 || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
207 syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m");
213 * disestablish_ppp - Restore the serial port to normal operation.
214 * This shouldn't call die() because it's called from die().
222 /* Reset non-blocking mode on the file descriptor. */
223 if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
224 syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
229 * Check whether the link seems not to be 8-bit clean.
231 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
233 switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
235 s = "bit 7 set to 1";
238 s = "bit 7 set to 0";
248 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
249 syslog(LOG_WARNING, "All received characters had %s", s);
252 if (ioctl(fd, TIOCSETD, &initdisc) < 0)
253 syslog(LOG_ERR, "ioctl(disestablish TIOCSETD): %m");
258 * List of valid speeds.
261 int speed_int, speed_val;
342 * Translate from bits/second to a speed_t.
348 struct speed *speedp;
352 for (speedp = speeds; speedp->speed_int; speedp++)
353 if (bps == speedp->speed_int)
354 return speedp->speed_val;
355 syslog(LOG_WARNING, "speed %d not supported", bps);
360 * Translate from a speed_t to bits/second.
366 struct speed *speedp;
370 for (speedp = speeds; speedp->speed_int; speedp++)
371 if (speed == speedp->speed_val)
372 return speedp->speed_int;
378 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
379 * at the requested speed, etc. If `local' is true, set CLOCAL
380 * regardless of whether the modem option was specified.
383 set_up_tty(fd, local)
386 int speed, x, modembits;
389 if (tcgetattr(fd, &tios) < 0) {
390 syslog(LOG_ERR, "tcgetattr: %m");
397 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
399 tios.c_cflag |= CS8 | CREAD | HUPCL;
401 tios.c_cflag |= CLOCAL;
402 tios.c_iflag = IGNBRK | IGNPAR;
406 tios.c_cc[VTIME] = 0;
409 tios.c_iflag |= IXON | IXOFF;
410 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
411 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
414 speed = translate_speed(inspeed);
416 cfsetospeed(&tios, speed);
417 cfsetispeed(&tios, speed);
419 speed = cfgetospeed(&tios);
423 modembits = TIOCM_RTS | TIOCM_CTS;
424 if (ioctl(fd, (crtscts ? TIOCMBIS : TIOCMBIC), &modembits) < 0)
425 syslog(LOG_ERR, "ioctl: TIOCMBIS/BIC: %m");
428 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
429 syslog(LOG_ERR, "tcsetattr: %m");
433 baud_rate = inspeed = baud_rate_of(speed);
438 * restore_tty - restore the terminal to the saved settings.
444 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
446 syslog(LOG_WARNING, "tcsetattr: %m");
452 * setdtr - control the DTR line on the serial port.
453 * This is called from die(), so it shouldn't call die().
455 * The write hack is to get NXFax to recognize that there is
456 * activity on the port. Not using the write nukes
457 * NXFax's capability to determine port usage.
464 int modembits = TIOCM_DTR;
472 /* ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); */
473 ioctl(fd, (on? TIOCSDTR: TIOCCDTR), 0);
478 * output - Output PPP packet.
487 log_packet(p, len, "sent ");
489 if (write(fd, p, len) < 0) {
490 if (errno == EWOULDBLOCK || errno == ENOBUFS
491 || errno == ENXIO || errno == EIO) {
492 syslog(LOG_WARNING, "write: warning: %m");
494 syslog(LOG_ERR, "write: %m");
502 * wait_input - wait until there is data available on fd,
503 * for the length of time specified by *timo (indefinite
508 struct timeval *timo;
515 n = select(fd+1, &ready, NULL, &ready, timo);
516 if (n < 0 && errno != EINTR) {
517 syslog(LOG_ERR, "select: %m");
524 * read_packet - get a PPP packet from the serial device.
532 if ((len = read(fd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
533 if (errno == EWOULDBLOCK || errno == EINTR) {
534 MAINDEBUG((LOG_DEBUG, "read(fd): %m"));
537 syslog(LOG_ERR, "read(fd): %m");
545 * ppp_send_config - configure the transmit characteristics of
549 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
557 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
559 if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
560 syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
564 if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
565 syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
569 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
570 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
573 x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
574 x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
575 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
576 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
583 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
586 ppp_set_xaccm(unit, accm)
590 if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
591 syslog(LOG_WARNING, "ioctl(PPPIOCSXASYNCMAP): %m");
596 * ppp_recv_config - configure the receive-side characteristics of
600 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
607 if (ioctl(fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
608 syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
611 if (ioctl(fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
612 syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
615 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
616 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
619 x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
620 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
621 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
627 * ccp_test - ask kernel whether a given compression method
628 * is acceptable for use.
631 ccp_test(unit, opt_ptr, opt_len, for_transmit)
632 int unit, opt_len, for_transmit;
635 struct ppp_option_data data;
638 data.length = opt_len;
639 data.transmit = for_transmit;
640 if (ioctl(fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
642 return (errno == ENOBUFS)? 0: -1;
646 * ccp_flags_set - inform kernel about the current state of CCP.
649 ccp_flags_set(unit, isopen, isup)
650 int unit, isopen, isup;
654 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
655 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
658 x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
659 x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
660 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
661 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
665 * ccp_fatal_error - returns 1 if decompression was disabled as a
666 * result of an error detected after decompression of a packet,
667 * 0 otherwise. This is necessary because of patent nonsense.
670 ccp_fatal_error(unit)
675 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
676 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
679 return x & SC_DC_FERROR;
683 * sifvjcomp - config tcp header compression
686 sifvjcomp(u, vjcomp, cidcomp, maxcid)
687 int u, vjcomp, cidcomp, maxcid;
691 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
692 syslog(LOG_ERR, "ioctl(PPIOCGFLAGS): %m");
695 x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
696 x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
697 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
698 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
701 if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
702 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
709 * sifup - Config the interface up and enable IP packets to pass.
712 #define SC_ENABLE_IP 0x100 /* compat for old versions of kernel code */
723 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
724 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
725 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
728 ifr.ifr_flags |= IFF_UP;
729 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
730 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
734 npi.protocol = PPP_IP;
735 npi.mode = NPMODE_PASS;
736 if (ioctl(fd, PPPIOCSNPMODE, &npi) < 0) {
737 if (errno != ENOTTY) {
738 syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
741 /* for backwards compatibility */
742 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
743 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
747 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
748 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
756 * sifdown - Config the interface down and disable IP.
768 npi.protocol = PPP_IP;
769 npi.mode = NPMODE_ERROR;
770 if (ioctl(fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
771 if (errno != ENOTTY) {
772 syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
775 /* backwards compatibility */
776 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
777 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
781 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
782 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
789 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
790 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
791 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
794 ifr.ifr_flags &= ~IFF_UP;
795 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
796 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
805 * SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
808 #define SET_SA_FAMILY(addr, family) \
809 BZERO((char *) &(addr), sizeof(addr)); \
810 addr.sa_family = (family);
813 * sifaddr - Config the interface IP addresses and netmask.
824 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
825 SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
826 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
827 if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
828 syslog(LOG_ERR, "ioctl(SIOCAIFADDR): %m");
831 ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
832 if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
833 syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
837 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
838 syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
839 if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
840 syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
848 * cifaddr - Clear the interface IP addresses, and delete routes
849 * through the interface if possible.
851 * N.B.: under NextStep, you can't *delete* an address on an interface,
852 * so we change it to 0.0.0.0... A real hack. But it simplifies
853 * reconnection on the server side.
864 (void) sifaddr(u, o, h, 0L);
866 SET_SA_FAMILY(rt.rt_dst, AF_INET);
867 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
868 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
869 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
870 rt.rt_flags = RTF_HOST;
871 if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
872 syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
879 * sifdefaultroute - assign a default route through the address given.
882 sifdefaultroute(u, g)
886 return dodefaultroute(g, 's');
890 * cifdefaultroute - delete a default route through the address given.
893 cifdefaultroute(u, g)
897 return dodefaultroute(g, 'c');
901 * dodefaultroute - talk to a routing socket to add/delete a default route.
904 dodefaultroute(g, cmd)
910 SET_SA_FAMILY(rt.rt_dst, AF_INET);
911 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = 0L;
912 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
913 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
914 rt.rt_flags = RTF_GATEWAY;
915 if (ioctl(sockfd, (cmd == 's') ? SIOCADDRT : SIOCDELRT, &rt) < 0) {
916 syslog(LOG_ERR, "%cifdefaultroute: ioctl(%s): %m", cmd,
917 (cmd == 's') ? "SIOCADDRT" : "SIOCDELRT");
920 default_route_gateway = (cmd == 's')? g: 0;
925 * sifproxyarp - Make a proxy ARP entry for the peer.
928 sifproxyarp(unit, hisaddr)
932 struct arpreq arpreq;
934 BZERO(&arpreq, sizeof(arpreq));
937 * Get the hardware address of an interface on the same subnet
938 * as our local address.
940 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
941 syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
945 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
946 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
947 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
948 if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
949 syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
953 proxy_arp_addr = hisaddr;
958 * cifproxyarp - Delete the proxy ARP entry for the peer.
961 cifproxyarp(unit, hisaddr)
965 struct arpreq arpreq;
967 BZERO(&arpreq, sizeof(arpreq));
968 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
969 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
970 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
971 syslog(LOG_WARNING, "ioctl(SIOCDARP): %m");
979 * get_ether_addr - get the hardware address of an interface on the
980 * the same subnet as ipaddr.
985 get_ether_addr(ipaddr, hwaddr)
987 struct sockaddr *hwaddr;
989 struct ifreq *ifr, *ifend, *ifp;
991 struct ether_addr dla;
994 struct ifreq ifs[MAX_IFS];
995 struct hostent *hostent;
997 ifc.ifc_len = sizeof(ifs);
999 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1000 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1005 * Scan through looking for an interface with an Internet
1006 * address on the same subnet as `ipaddr'.
1008 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1009 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1010 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1011 if (ifr->ifr_addr.sa_family == AF_INET) {
1012 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1013 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1015 * Check that the interface is up, and not point-to-point
1018 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1020 if ((ifreq.ifr_flags &
1021 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1022 != (IFF_UP|IFF_BROADCAST))
1025 * Get its netmask and check that it's on the right subnet.
1027 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1029 mask = ((struct sockaddr_in*)&ifreq.ifr_addr)->sin_addr.s_addr;
1030 if ((ipaddr & mask) != (ina & mask))
1039 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1042 * Get the hostname and look for an entry using the ethers database.
1043 * Under NeXTStep this is the best we can do for now.
1045 if ((hostent = gethostbyaddr((char*)&ina, sizeof(ina), AF_INET)) == NULL)
1048 if (ether_by_host(hostent->h_name, &dla)) {
1049 syslog(LOG_INFO, "Add entry for %s in /etc/ethers", hostent->h_name);
1050 return 0; /* it's not there */
1052 hwaddr->sa_family = AF_UNSPEC;
1053 BCOPY(&dla, hwaddr->sa_data, sizeof(dla));
1058 ether_by_host(hostname, etherptr)
1060 struct ether_addr *etherptr;
1062 struct ether_addr *thisptr;
1068 if (!ether_hostton(hostname, etherptr))
1071 * We shall now try and
1072 * find the address in the
1073 * top domain of netinfo.
1075 strcat(strcpy(path, "/machines/"), hostname);
1077 if (ni_open((void *)0, "/", &conn)
1078 || ni_root(conn, &root)
1079 || ni_pathsearch(conn, &root, path)
1080 || ni_lookupprop(conn, &root, "en_address", &val))
1084 * Now we can convert the returned string into an ethernet address.
1086 strcpy(path, val.ni_namelist_val[0]);
1088 if ((thisptr = (struct ether_addr*)ether_aton(path)) == NULL)
1090 BCOPY(thisptr, etherptr, sizeof(struct ether_addr));
1097 * Return user specified netmask, modified by any mask we might determine
1098 * for address `addr' (in network byte order).
1099 * Here we scan through the system's list of interfaces, looking for
1100 * any non-point-to-point interfaces which might appear to be on the same
1101 * network as `addr'. If we find any, we OR in their netmask to the
1102 * user-specified netmask.
1108 u_int32_t mask, nmask, ina;
1109 struct ifreq *ifr, *ifend, ifreq;
1111 struct ifreq ifs[MAX_IFS];
1114 if (IN_CLASSA(addr)) /* determine network mask for address class */
1115 nmask = IN_CLASSA_NET;
1116 else if (IN_CLASSB(addr))
1117 nmask = IN_CLASSB_NET;
1119 nmask = IN_CLASSC_NET;
1120 /* class D nets are disallowed by bad_ip_adrs */
1121 mask = netmask | htonl(nmask);
1124 * Scan through the system's network interfaces.
1126 ifc.ifc_len = sizeof(ifs);
1128 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1129 syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
1132 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1133 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1134 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1136 * Check the interface's internet address.
1138 if (ifr->ifr_addr.sa_family != AF_INET)
1140 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1141 if ((ntohl(ina) & nmask) != (addr & nmask))
1144 * Check that the interface is up, and not point-to-point or loopback.
1146 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1147 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1149 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1153 * Get its netmask and OR it into our mask.
1155 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1157 mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
1166 * daemon - Detach us from the terminal session.
1169 daemon(nochdir, noclose)
1170 int nochdir, noclose;
1174 if ((pid = fork()) < 0)
1177 exit(0); /* parent dies */
1182 fclose(stdin); /* don't need stdin, stdout, stderr */
1194 char *d = malloc(strlen(s) + 1);
1196 if (d) strcpy(d, s);
1201 * This logwtmp() implementation is subject to the following copyright:
1203 * Copyright (c) 1988 The Regents of the University of California.
1204 * All rights reserved.
1206 * Redistribution and use in source and binary forms are permitted
1207 * provided that the above copyright notice and this paragraph are
1208 * duplicated in all such forms and that any documentation,
1209 * advertising materials, and other materials related to such
1210 * distribution and use acknowledge that the software was developed
1211 * by the University of California, Berkeley. The name of the
1212 * University may not be used to endorse or promote products derived
1213 * from this software without specific prior written permission.
1214 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
1215 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
1216 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
1219 #define WTMPFILE "/usr/adm/wtmp"
1222 logwtmp(line, name, host)
1223 char *line, *name, *host;
1229 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1231 if (!fstat(fd, &buf)) {
1232 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1233 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1234 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1235 (void)time(&ut.ut_time);
1236 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1237 (void)ftruncate(fd, buf.st_size);
1243 * Routines for locking and unlocking the serial device, moved here
1247 #define LOCK_PREFIX "/usr/spool/uucp/LCK/LCK.."
1250 * lock - create a lock file for the named device
1259 if ((p = strrchr(dev, '/')) != NULL)
1261 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1262 if (lock_file == NULL)
1263 novm("lock file name");
1264 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1266 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1268 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1269 /* Read the lock file to find out who has the device locked */
1270 n = read(fd, &pid, sizeof(pid));
1272 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1275 if (kill(pid, 0) == -1 && errno == ESRCH) {
1276 /* pid no longer exists - remove the lock file */
1277 if (unlink(lock_file) == 0) {
1279 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1283 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1286 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1291 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1298 write(fd, &pid, sizeof pid);
1305 * unlock - remove our lockfile
1317 #if defined(i386) && defined(HAS_BROKEN_IOCTL)
1328 u_char let, code, size;
1330 size = (cmd >> 16) & IOCPARM_MASK;
1334 if (let == 't' && (75 <= code && code <= 90))
1335 syslog(LOG_INFO, "ioctl(%d, 0x%x ('%c', %d, %d), 0x%x)\n", fd, cmd,
1336 let, code, size, c);
1339 ret = ioctl(fd, cmd, c);
1344 syslog(LOG_INFO, "ioctl('%c', %d, %d) errno = %d (%m)\n",
1345 let, code, size, errno);
1346 if (let == 't' && (75 <= code && code <= 90) && (cmd & IOC_OUT)) {
1347 int i, len = ((cmd >> 16) & IOCPARM_MASK);
1348 for (i = 0; i < len / 4; ++i)
1349 syslog(LOG_INFO, "word[%d] @ 0x%06x = 0x%x\n",
1350 i, &((int *) c)[i],((int *)c)[i]);
1355 if (ret == -1 && errno == EPERM)
1359 #endif /* HAS_BROKEN_IOCTL */
1362 #if defined(FIXSIGS) && (defined (hppa) || defined(sparc))
1365 * These redefinitions of Posix functions are necessary
1366 * because HPPA systems have an OS bug that causes
1367 * sigaction to core dump:
1369 * AlainF 9-Nov-1994 HACK FOR HP-PA/NEXTSTEP
1370 * sigaction(3) seems broken in the HP-PA NeXTSTEP 3.2
1371 * Posix lib. This causes pppd to SIGBUS at the expiration
1372 * of the first timeout (_sigtramp seems to invoke
1373 * the SIGALRM handler at an unreasonably low address).
1374 * All calls so sigaction(3) have been changed to calls
1375 * to sigvec(2) and sigprocmask(SIG_BLOCK,...) to
1377 * This is kind of a hack, especially since there are
1378 * other routines of the Posix lib still used, but
1381 * Dave Hess <David-Hess@net.tamu.edu> noted that 3.3 Sparc seems to
1382 * have the same bug. Thus this fix has been enabled for SPARC also.
1387 int sigemptyset(sigset_t *mask)
1392 sigaddset(sigset_t *mask, int which_sig)
1394 *mask |= sigmask(which_sig);
1398 int sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
1403 sv.sv_handler = act->sa_handler;
1404 sv.sv_mask = act->sa_mask;
1410 syslog(LOG_WARNING, "PPPD: Inside modified HP and SPARC sigaction\n");
1413 return sigvec(sig, &sv, NULL);