BSD 4_4 release

[unix-history] / usr / src / sbin / XNSrouted / main.c

diff --git a/usr/src/sbin/XNSrouted/main.c b/usr/src/sbin/XNSrouted/main.c
index 5dacdb4..601a005 100644 (file)
--- a/usr/src/sbin/XNSrouted/main.c
+++ b/usr/src/sbin/XNSrouted/main.c
@@ -1,12 +1,53 @@
+/*
+ * Copyright (c) 1985, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * This file includes significant work done at Cornell University by
+ * Bill Nesheim.  That work included by permission.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+

 #ifndef lint
 #ifndef lint

-static char rcsid[] = "$Header$";
-#endif
+static char copyright[] =
+"@(#) Copyright (c) 1985, 1993\n\
+       The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)main.c     8.1 (Berkeley) 6/5/93";
+#endif /* not lint */

 
 /*
  * XNS Routing Information Protocol Daemon
  */
 #include "defs.h"
 
 /*
  * XNS Routing Information Protocol Daemon
  */
 #include "defs.h"

-#include <sys/ioctl.h>

 #include <sys/time.h>
 
 #include <net/if.h>
 #include <sys/time.h>
 
 #include <net/if.h>


@@ -14,13 +55,13 @@ static char rcsid[] = "$Header$";
 #include <errno.h>
 #include <nlist.h>
 #include <signal.h>
 #include <errno.h>
 #include <nlist.h>
 #include <signal.h>

-#include <syslog.h>
+#include <paths.h>

 
 int    supplier = -1;          /* process should supply updates */
 extern int gateway;
 
 struct rip *msg = (struct rip *) &packet[sizeof (struct idp)]; 
 
 int    supplier = -1;          /* process should supply updates */
 extern int gateway;
 
 struct rip *msg = (struct rip *) &packet[sizeof (struct idp)]; 

-int    hup(), fkexit();
+void   hup(), fkexit(), timer();

 
 main(argc, argv)
        int argc;
 
 main(argc, argv)
        int argc;


@@ -31,11 +72,6 @@ main(argc, argv)
        u_char retry;
        
        argv0 = argv;
        u_char retry;
        
        argv0 = argv;

-       addr.sns_family = AF_NS;
-       addr.sns_port = htons(IDPPORT_RIF);
-       s = getsocket(SOCK_DGRAM, 0, &addr);
-       if (s < 0)
-               exit(1);

        argv++, argc--;
        while (argc > 0 && **argv == '-') {
                if (strcmp(*argv, "-s") == 0) {
        argv++, argc--;
        while (argc > 0 && **argv == '-') {
                if (strcmp(*argv, "-s") == 0) {


@@ -48,6 +84,11 @@ main(argc, argv)
                        argv++, argc--;
                        continue;
                }
                        argv++, argc--;
                        continue;
                }

+               if (strcmp(*argv, "-R") == 0) {
+                       noteremoterequests++;
+                       argv++, argc--;
+                       continue;
+               }

                if (strcmp(*argv, "-t") == 0) {
                        tracepackets++;
                        argv++, argc--;
                if (strcmp(*argv, "-t") == 0) {
                        tracepackets++;
                        argv++, argc--;


@@ -70,24 +111,30 @@ main(argc, argv)
                exit(1);
        }
        
                exit(1);
        }
        

+       

 #ifndef DEBUG
 #ifndef DEBUG

-       if (!tracepackets) {
-               int t;
+       if (!tracepackets)
+               daemon(0, 0);
+#endif
+       openlog("XNSrouted", LOG_PID, LOG_DAEMON);

 
 

-               if (fork())
-                       exit(0);
-               for (t = 0; t < 20; t++)
-                       (void) close(t);
-               (void) open("/", 0);
-               (void) dup2(0, 1);
-               (void) dup2(0, 2);
-               t = open("/dev/tty", 2);
-               if (t >= 0) {
-                       ioctl(t, TIOCNOTTY, (char *)0);
-                       (void) close(t);
-               }
+       addr.sns_family = AF_NS;
+       addr.sns_len = sizeof(addr);
+       addr.sns_port = htons(IDPPORT_RIF);
+       ns_anynet.s_net[0] = ns_anynet.s_net[1] = -1;
+       ns_netmask.sns_addr.x_net = ns_anynet;
+       ns_netmask.sns_len = 6;
+       r = socket(AF_ROUTE, SOCK_RAW, 0);
+       /* later, get smart about lookingforinterfaces */
+       if (r)
+               shutdown(r, 0); /* for now, don't want reponses */
+       else {
+               fprintf(stderr, "routed: no routing socket\n");
+               exit(1);

        }
        }

-#endif
+       s = getsocket(SOCK_DGRAM, 0, &addr);
+       if (s < 0)
+               exit(1);

        /*
         * Any extra argument is considered
         * a tracing log file.
        /*
         * Any extra argument is considered
         * a tracing log file.


@@ -106,9 +153,9 @@ main(argc, argv)
                supplier = 0;
        /* request the state of the world */
        msg->rip_cmd = htons(RIPCMD_REQUEST);
                supplier = 0;
        /* request the state of the world */
        msg->rip_cmd = htons(RIPCMD_REQUEST);

-       xnnet(msg->rip_nets[0].rip_dst[0]) = htonl(DSTNETS_ALL);
+       msg->rip_nets[0].rip_dst = ns_anynet;

        msg->rip_nets[0].rip_metric =  htons(HOPCNT_INFINITY);
        msg->rip_nets[0].rip_metric =  htons(HOPCNT_INFINITY);

-       toall(sendmsg);
+       toall(sndmsg);

        signal(SIGALRM, timer);
        signal(SIGHUP, hup);
        signal(SIGINT, hup);
        signal(SIGALRM, timer);
        signal(SIGHUP, hup);
        signal(SIGINT, hup);


@@ -116,18 +163,9 @@ main(argc, argv)
        timer();
        
 
        timer();
        
 

-       for (;;) {
-               int ibits;
-               register int n;
-
-               /*ibits = 1 << s;
-               n = select(20, &ibits, 0, 0, 0);
-               if (n < 0)
-                       continue;
-               if (ibits & (1 << s)) */
-                       process(s);
-               /* handle ICMP redirects */
-       }
+       for (;;) 
+               process(s);
+       

 }
 
 process(fd)
 }
 
 process(fd)


@@ -140,25 +178,25 @@ process(fd)
        cc = recvfrom(fd, packet, sizeof (packet), 0, &from, &fromlen);
        if (cc <= 0) {
                if (cc < 0 && errno != EINTR)
        cc = recvfrom(fd, packet, sizeof (packet), 0, &from, &fromlen);
        if (cc <= 0) {
                if (cc < 0 && errno != EINTR)

-                       perror("recvfrom");
+                       syslog(LOG_ERR, "recvfrom: %m");

                return;
        }
                return;
        }

-       /* We get the IDP header in front of the RIF packet*/
-       if (tracepackets > 1) {
-           fprintf(ftrace,"rcv %d bytes on %s ",
-               cc, xns_ntoa(&idp->idp_dna));
+       if (tracepackets > 1 && ftrace) {
+           fprintf(ftrace,"rcv %d bytes on %s ", cc, xns_ntoa(&idp->idp_dna));

            fprintf(ftrace," from %s\n", xns_ntoa(&idp->idp_sna));
        }
        
            fprintf(ftrace," from %s\n", xns_ntoa(&idp->idp_sna));
        }
        

-       if (ns_netof(idp->idp_sna) != ns_netof(idp->idp_dna)) {
-               fprintf(ftrace, "XNSrouted: net of interface (%d) != net on ether (%d)!\n",
-                       ns_netof(idp->idp_dna), ns_netof(idp->idp_sna));
+       if (noteremoterequests && !ns_neteqnn(idp->idp_sna.x_net, ns_zeronet)
+               && !ns_neteq(idp->idp_sna, idp->idp_dna))
+       {
+               syslog(LOG_ERR,
+                      "net of interface (%s) != net on ether (%s)!\n",
+                      xns_nettoa(idp->idp_dna.x_net),
+                      xns_nettoa(idp->idp_sna.x_net));

        }
                        
        }
                        

+       /* We get the IDP header in front of the RIF packet*/

        cc -= sizeof (struct idp);
        cc -= sizeof (struct idp);

-       if (fromlen != sizeof (struct sockaddr_ns))
-               fprintf(ftrace, "fromlen is %d instead of %d\n",
-               fromlen, sizeof (struct sockaddr_ns));

 #define        mask(s) (1<<((s)-1))
        omask = sigblock(mask(SIGALRM));
        rip_input(&from, cc);
 #define        mask(s) (1<<((s)-1))
        omask = sigblock(mask(SIGALRM));
        rip_input(&from, cc);


@@ -174,14 +212,14 @@ getsocket(type, proto, sns)
 
        retry = 1;
        while ((s = socket(domain, type, proto)) < 0 && retry) {
 
        retry = 1;
        while ((s = socket(domain, type, proto)) < 0 && retry) {

-               perror("socket");
+               syslog(LOG_ERR, "socket: %m");

                sleep(5 * retry);
                retry <<= 1;
        }
        if (retry == 0)
                return (-1);
                sleep(5 * retry);
                retry <<= 1;
        }
        if (retry == 0)
                return (-1);

-       while (bind(s, sns, sizeof (*sns), 0) < 0 && retry) {
-               perror("bind");
+       while (bind(s, (struct sockaddr *)sns, sizeof (*sns)) < 0 && retry) {
+               syslog(LOG_ERR, "bind: %m");

                sleep(5 * retry);
                retry <<= 1;
        }
                sleep(5 * retry);
                retry <<= 1;
        }


@@ -190,17 +228,17 @@ getsocket(type, proto, sns)
        if (domain==AF_NS) {
                struct idp idp;
                if (setsockopt(s, 0, SO_HEADERS_ON_INPUT, &on, sizeof(on))) {
        if (domain==AF_NS) {
                struct idp idp;
                if (setsockopt(s, 0, SO_HEADERS_ON_INPUT, &on, sizeof(on))) {

-                       perror("setsockopt SEE HEADERS");
+                       syslog(LOG_ERR, "setsockopt SEE HEADERS: %m");

                        exit(1);
                }
                idp.idp_pt = NSPROTO_RI;
                if (setsockopt(s, 0, SO_DEFAULT_HEADERS, &idp, sizeof(idp))) {
                        exit(1);
                }
                idp.idp_pt = NSPROTO_RI;
                if (setsockopt(s, 0, SO_DEFAULT_HEADERS, &idp, sizeof(idp))) {

-                       perror("setsockopt SET HEADERS");
+                       syslog(LOG_ERR, "setsockopt SET HEADER: %m");

                        exit(1);
                }
        }
        if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
                        exit(1);
                }
        }
        if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {

-               perror("setsockopt SO_BROADCAST");
+               syslog(LOG_ERR, "setsockopt SO_BROADCAST: %m");

                exit(1);
        }
        return (s);
                exit(1);
        }
        return (s);


@@ -209,6 +247,7 @@ getsocket(type, proto, sns)
 /*
  * Fork and exit on EMT-- for profiling.
  */
 /*
  * Fork and exit on EMT-- for profiling.
  */

+void

 fkexit()
 {
        if (fork() == 0)
 fkexit()
 {
        if (fork() == 0)