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 1.3 1995/12/18 03:30:47 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;
337 #warning Defining B115200
348 * Translate from bits/second to a speed_t.
354 struct speed *speedp;
358 for (speedp = speeds; speedp->speed_int; speedp++)
359 if (bps == speedp->speed_int)
360 return speedp->speed_val;
361 syslog(LOG_WARNING, "speed %d not supported", bps);
366 * Translate from a speed_t to bits/second.
372 struct speed *speedp;
376 for (speedp = speeds; speedp->speed_int; speedp++)
377 if (speed == speedp->speed_val)
378 return speedp->speed_int;
384 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
385 * at the requested speed, etc. If `local' is true, set CLOCAL
386 * regardless of whether the modem option was specified.
389 set_up_tty(fd, local)
392 int speed, x, modembits;
395 if (tcgetattr(fd, &tios) < 0) {
396 syslog(LOG_ERR, "tcgetattr: %m");
403 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
405 tios.c_cflag |= CS8 | CREAD | HUPCL;
407 tios.c_cflag |= CLOCAL;
409 tios.c_iflag = IGNBRK | IGNPAR;
413 tios.c_cc[VTIME] = 0;
416 tios.c_iflag |= IXON | IXOFF;
417 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
418 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
421 speed = translate_speed(inspeed);
423 cfsetospeed(&tios, speed);
424 cfsetispeed(&tios, speed);
426 speed = cfgetospeed(&tios);
430 modembits = TIOCM_RTS | TIOCM_CTS;
431 if (ioctl(fd, (crtscts ? TIOCMBIS : TIOCMBIC), &modembits) < 0)
432 syslog(LOG_ERR, "ioctl: TIOCMBIS/BIC: %m");
435 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
436 syslog(LOG_ERR, "tcsetattr: %m");
440 baud_rate = inspeed = baud_rate_of(speed);
445 * restore_tty - restore the terminal to the saved settings.
451 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
453 syslog(LOG_WARNING, "tcsetattr: %m");
459 * setdtr - control the DTR line on the serial port.
460 * This is called from die(), so it shouldn't call die().
462 * The write hack is to get NXFax to recognize that there is
463 * activity on the port. Not using the write nukes
464 * NXFax's capability to determine port usage.
471 int modembits = TIOCM_DTR;
479 /* ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); */
480 ioctl(fd, (on? TIOCSDTR: TIOCCDTR), 0);
485 * output - Output PPP packet.
494 log_packet(p, len, "sent ");
496 if (write(fd, p, len) < 0) {
497 if (errno == EWOULDBLOCK || errno == ENOBUFS
498 || errno == ENXIO || errno == EIO) {
499 syslog(LOG_WARNING, "write: warning: %m");
501 syslog(LOG_ERR, "write: %m");
509 * wait_input - wait until there is data available on fd,
510 * for the length of time specified by *timo (indefinite
515 struct timeval *timo;
522 n = select(fd+1, &ready, NULL, &ready, timo);
523 if (n < 0 && errno != EINTR) {
524 syslog(LOG_ERR, "select: %m");
531 * read_packet - get a PPP packet from the serial device.
539 if ((len = read(fd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
540 if (errno == EWOULDBLOCK || errno == EINTR) {
541 MAINDEBUG((LOG_DEBUG, "read(fd): %m"));
544 syslog(LOG_ERR, "read(fd): %m");
552 * ppp_send_config - configure the transmit characteristics of
556 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
564 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
566 if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
567 syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
571 if (ioctl(fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
572 syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
576 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
577 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
580 x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
581 x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
582 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
583 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
590 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
593 ppp_set_xaccm(unit, accm)
597 if (ioctl(fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
598 syslog(LOG_WARNING, "ioctl(PPPIOCSXASYNCMAP): %m");
603 * ppp_recv_config - configure the receive-side characteristics of
607 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
614 if (ioctl(fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
615 syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
618 if (ioctl(fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
619 syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
622 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
623 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
626 x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
627 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
628 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
634 * ccp_test - ask kernel whether a given compression method
635 * is acceptable for use.
638 ccp_test(unit, opt_ptr, opt_len, for_transmit)
639 int unit, opt_len, for_transmit;
642 struct ppp_option_data data;
645 data.length = opt_len;
646 data.transmit = for_transmit;
647 if (ioctl(fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
649 return (errno == ENOBUFS)? 0: -1;
653 * ccp_flags_set - inform kernel about the current state of CCP.
656 ccp_flags_set(unit, isopen, isup)
657 int unit, isopen, isup;
661 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
662 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
665 x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
666 x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
667 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
668 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
672 * ccp_fatal_error - returns 1 if decompression was disabled as a
673 * result of an error detected after decompression of a packet,
674 * 0 otherwise. This is necessary because of patent nonsense.
677 ccp_fatal_error(unit)
682 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
683 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
686 return x & SC_DC_FERROR;
690 * sifvjcomp - config tcp header compression
693 sifvjcomp(u, vjcomp, cidcomp, maxcid)
694 int u, vjcomp, cidcomp, maxcid;
698 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
699 syslog(LOG_ERR, "ioctl(PPIOCGFLAGS): %m");
702 x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
703 x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
704 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
705 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
708 if (ioctl(fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
709 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
716 * sifup - Config the interface up and enable IP packets to pass.
719 #define SC_ENABLE_IP 0x100 /* compat for old versions of kernel code */
730 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
731 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
732 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
735 ifr.ifr_flags |= IFF_UP;
736 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
737 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
741 npi.protocol = PPP_IP;
742 npi.mode = NPMODE_PASS;
743 if (ioctl(fd, PPPIOCSNPMODE, &npi) < 0) {
744 if (errno != ENOTTY) {
745 syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
748 /* for backwards compatibility */
749 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
750 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
754 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
755 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
763 * sifdown - Config the interface down and disable IP.
775 npi.protocol = PPP_IP;
776 npi.mode = NPMODE_ERROR;
777 if (ioctl(fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
778 if (errno != ENOTTY) {
779 syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
782 /* backwards compatibility */
783 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
784 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
788 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
789 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
796 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
797 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
798 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
801 ifr.ifr_flags &= ~IFF_UP;
802 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
803 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
812 * SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
815 #define SET_SA_FAMILY(addr, family) \
816 BZERO((char *) &(addr), sizeof(addr)); \
817 addr.sa_family = (family);
820 * sifaddr - Config the interface IP addresses and netmask.
831 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
832 SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
833 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
834 if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
835 syslog(LOG_ERR, "ioctl(SIOCAIFADDR): %m");
838 ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
839 if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
840 syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
844 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
845 syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
846 if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
847 syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
855 * cifaddr - Clear the interface IP addresses, and delete routes
856 * through the interface if possible.
858 * N.B.: under NextStep, you can't *delete* an address on an interface,
859 * so we change it to 0.0.0.0... A real hack. But it simplifies
860 * reconnection on the server side.
871 (void) sifaddr(u, o, h, 0L);
873 SET_SA_FAMILY(rt.rt_dst, AF_INET);
874 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
875 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
876 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
877 rt.rt_flags = RTF_HOST;
878 if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
879 syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
886 * sifdefaultroute - assign a default route through the address given.
889 sifdefaultroute(u, g)
893 return dodefaultroute(g, 's');
897 * cifdefaultroute - delete a default route through the address given.
900 cifdefaultroute(u, g)
904 return dodefaultroute(g, 'c');
908 * dodefaultroute - talk to a routing socket to add/delete a default route.
911 dodefaultroute(g, cmd)
917 SET_SA_FAMILY(rt.rt_dst, AF_INET);
918 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = 0L;
919 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
920 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
921 rt.rt_flags = RTF_GATEWAY;
922 if (ioctl(sockfd, (cmd == 's') ? SIOCADDRT : SIOCDELRT, &rt) < 0) {
923 syslog(LOG_ERR, "%cifdefaultroute: ioctl(%s): %m", cmd,
924 (cmd == 's') ? "SIOCADDRT" : "SIOCDELRT");
927 default_route_gateway = (cmd == 's')? g: 0;
932 * sifproxyarp - Make a proxy ARP entry for the peer.
935 sifproxyarp(unit, hisaddr)
939 struct arpreq arpreq;
941 BZERO(&arpreq, sizeof(arpreq));
944 * Get the hardware address of an interface on the same subnet
945 * as our local address.
947 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
948 syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
952 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
953 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
954 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
955 if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
956 syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
960 proxy_arp_addr = hisaddr;
965 * cifproxyarp - Delete the proxy ARP entry for the peer.
968 cifproxyarp(unit, hisaddr)
972 struct arpreq arpreq;
974 BZERO(&arpreq, sizeof(arpreq));
975 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
976 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
977 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
978 syslog(LOG_WARNING, "ioctl(SIOCDARP): %m");
986 * get_ether_addr - get the hardware address of an interface on the
987 * the same subnet as ipaddr.
992 get_ether_addr(ipaddr, hwaddr)
994 struct sockaddr *hwaddr;
996 struct ifreq *ifr, *ifend, *ifp;
998 struct ether_addr dla;
1001 struct ifreq ifs[MAX_IFS];
1002 struct hostent *hostent;
1004 ifc.ifc_len = sizeof(ifs);
1006 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1007 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1012 * Scan through looking for an interface with an Internet
1013 * address on the same subnet as `ipaddr'.
1015 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1016 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1017 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1018 if (ifr->ifr_addr.sa_family == AF_INET) {
1019 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1020 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1022 * Check that the interface is up, and not point-to-point
1025 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1027 if ((ifreq.ifr_flags &
1028 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1029 != (IFF_UP|IFF_BROADCAST))
1032 * Get its netmask and check that it's on the right subnet.
1034 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1036 mask = ((struct sockaddr_in*)&ifreq.ifr_addr)->sin_addr.s_addr;
1037 if ((ipaddr & mask) != (ina & mask))
1046 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1049 * Get the hostname and look for an entry using the ethers database.
1050 * Under NeXTStep this is the best we can do for now.
1052 if ((hostent = gethostbyaddr((char*)&ina, sizeof(ina), AF_INET)) == NULL)
1055 if (ether_by_host(hostent->h_name, &dla)) {
1056 syslog(LOG_INFO, "Add entry for %s in /etc/ethers", hostent->h_name);
1057 return 0; /* it's not there */
1059 hwaddr->sa_family = AF_UNSPEC;
1060 BCOPY(&dla, hwaddr->sa_data, sizeof(dla));
1065 ether_by_host(hostname, etherptr)
1067 struct ether_addr *etherptr;
1069 struct ether_addr *thisptr;
1075 if (!ether_hostton(hostname, etherptr))
1078 * We shall now try and
1079 * find the address in the
1080 * top domain of netinfo.
1082 strcat(strcpy(path, "/machines/"), hostname);
1084 if (ni_open((void *)0, "/", &conn)
1085 || ni_root(conn, &root)
1086 || ni_pathsearch(conn, &root, path)
1087 || ni_lookupprop(conn, &root, "en_address", &val))
1091 * Now we can convert the returned string into an ethernet address.
1093 strcpy(path, val.ni_namelist_val[0]);
1095 if ((thisptr = (struct ether_addr*)ether_aton(path)) == NULL)
1097 BCOPY(thisptr, etherptr, sizeof(struct ether_addr));
1104 * Return user specified netmask, modified by any mask we might determine
1105 * for address `addr' (in network byte order).
1106 * Here we scan through the system's list of interfaces, looking for
1107 * any non-point-to-point interfaces which might appear to be on the same
1108 * network as `addr'. If we find any, we OR in their netmask to the
1109 * user-specified netmask.
1115 u_int32_t mask, nmask, ina;
1116 struct ifreq *ifr, *ifend, ifreq;
1118 struct ifreq ifs[MAX_IFS];
1121 if (IN_CLASSA(addr)) /* determine network mask for address class */
1122 nmask = IN_CLASSA_NET;
1123 else if (IN_CLASSB(addr))
1124 nmask = IN_CLASSB_NET;
1126 nmask = IN_CLASSC_NET;
1127 /* class D nets are disallowed by bad_ip_adrs */
1128 mask = netmask | htonl(nmask);
1131 * Scan through the system's network interfaces.
1133 ifc.ifc_len = sizeof(ifs);
1135 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1136 syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
1139 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1140 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1141 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1143 * Check the interface's internet address.
1145 if (ifr->ifr_addr.sa_family != AF_INET)
1147 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1148 if ((ntohl(ina) & nmask) != (addr & nmask))
1151 * Check that the interface is up, and not point-to-point or loopback.
1153 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1154 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1156 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1160 * Get its netmask and OR it into our mask.
1162 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1164 mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
1173 * daemon - Detach us from the terminal session.
1176 daemon(nochdir, noclose)
1177 int nochdir, noclose;
1181 if ((pid = fork()) < 0)
1184 exit(0); /* parent dies */
1189 fclose(stdin); /* don't need stdin, stdout, stderr */
1201 char *d = malloc(strlen(s) + 1);
1203 if (d) strcpy(d, s);
1208 * This logwtmp() implementation is subject to the following copyright:
1210 * Copyright (c) 1988 The Regents of the University of California.
1211 * All rights reserved.
1213 * Redistribution and use in source and binary forms are permitted
1214 * provided that the above copyright notice and this paragraph are
1215 * duplicated in all such forms and that any documentation,
1216 * advertising materials, and other materials related to such
1217 * distribution and use acknowledge that the software was developed
1218 * by the University of California, Berkeley. The name of the
1219 * University may not be used to endorse or promote products derived
1220 * from this software without specific prior written permission.
1221 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
1222 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
1223 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
1226 #define WTMPFILE "/usr/adm/wtmp"
1229 logwtmp(line, name, host)
1230 char *line, *name, *host;
1236 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1238 if (!fstat(fd, &buf)) {
1239 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1240 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1241 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1242 (void)time(&ut.ut_time);
1243 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1244 (void)ftruncate(fd, buf.st_size);
1250 * Routines for locking and unlocking the serial device, moved here
1254 #define LOCK_PREFIX "/usr/spool/uucp/LCK/LCK.."
1257 * lock - create a lock file for the named device
1266 if ((p = strrchr(dev, '/')) != NULL)
1268 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1269 if (lock_file == NULL)
1270 novm("lock file name");
1271 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1273 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1275 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1276 /* Read the lock file to find out who has the device locked */
1277 n = read(fd, &pid, sizeof(pid));
1279 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1282 if (kill(pid, 0) == -1 && errno == ESRCH) {
1283 /* pid no longer exists - remove the lock file */
1284 if (unlink(lock_file) == 0) {
1286 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1290 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1293 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1298 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1305 write(fd, &pid, sizeof pid);
1312 * unlock - remove our lockfile
1324 #if defined(i386) && defined(HAS_BROKEN_IOCTL)
1335 u_char let, code, size;
1337 size = (cmd >> 16) & IOCPARM_MASK;
1341 if (let == 't' && (75 <= code && code <= 90))
1342 syslog(LOG_INFO, "ioctl(%d, 0x%x ('%c', %d, %d), 0x%x)\n", fd, cmd,
1343 let, code, size, c);
1346 ret = ioctl(fd, cmd, c);
1351 syslog(LOG_INFO, "ioctl('%c', %d, %d) errno = %d (%m)\n",
1352 let, code, size, errno);
1353 if (let == 't' && (75 <= code && code <= 90) && (cmd & IOC_OUT)) {
1354 int i, len = ((cmd >> 16) & IOCPARM_MASK);
1355 for (i = 0; i < len / 4; ++i)
1356 syslog(LOG_INFO, "word[%d] @ 0x%06x = 0x%x\n",
1357 i, &((int *) c)[i],((int *)c)[i]);
1362 if (ret == -1 && errno == EPERM)
1366 #endif /* HAS_BROKEN_IOCTL */
1369 #if defined(FIXSIGS) && (defined (hppa) || defined(sparc))
1372 * These redefinitions of Posix functions are necessary
1373 * because HPPA systems have an OS bug that causes
1374 * sigaction to core dump:
1376 * AlainF 9-Nov-1994 HACK FOR HP-PA/NEXTSTEP
1377 * sigaction(3) seems broken in the HP-PA NeXTSTEP 3.2
1378 * Posix lib. This causes pppd to SIGBUS at the expiration
1379 * of the first timeout (_sigtramp seems to invoke
1380 * the SIGALRM handler at an unreasonably low address).
1381 * All calls so sigaction(3) have been changed to calls
1382 * to sigvec(2) and sigprocmask(SIG_BLOCK,...) to
1384 * This is kind of a hack, especially since there are
1385 * other routines of the Posix lib still used, but
1388 * Dave Hess <David-Hess@net.tamu.edu> noted that 3.3 Sparc seems to
1389 * have the same bug. Thus this fix has been enabled for SPARC also.
1394 int sigemptyset(sigset_t *mask)
1399 sigaddset(sigset_t *mask, int which_sig)
1401 *mask |= sigmask(which_sig);
1405 int sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
1410 sv.sv_handler = act->sa_handler;
1411 sv.sv_mask = act->sa_mask;
1417 syslog(LOG_WARNING, "PPPD: Inside modified HP and SPARC sigaction\n");
1420 return sigvec(sig, &sv, NULL);