+/*
+ * Copyright (c) 1985 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
+static char sccsid[] = "@(#)trace.c 5.11 (Berkeley) 2/26/91";
+#endif /* not lint */
+
+/*
+ * Routing Table Management Daemon
+ */
+#define RIPCMDS
+#include <stdlib.h>
+#include "defs.h"
+
+#define NRECORDS 50 /* size of circular trace buffer */
+#ifdef DEBUG
+FILE *ftrace = stdout;
+int tracing = 1;
+#else DEBUG
+FILE *ftrace = NULL;
+int tracing = 0;
+#endif
+
+char *xns_ntoa();
+
+traceinit(ifp)
+ register struct interface *ifp;
+{
+ static int iftraceinit();
+
+ if (iftraceinit(ifp, &ifp->int_input) &&
+ iftraceinit(ifp, &ifp->int_output))
+ return;
+ tracing = 0;
+ syslog(LOG_ERR, "traceinit: can't init %s\n", ifp->int_name);
+}
+
+static
+iftraceinit(ifp, ifd)
+ struct interface *ifp;
+ register struct ifdebug *ifd;
+{
+ register struct iftrace *t;
+
+ ifd->ifd_records =
+ (struct iftrace *)malloc(NRECORDS * sizeof (struct iftrace));
+ if (ifd->ifd_records == 0)
+ return (0);
+ ifd->ifd_front = ifd->ifd_records;
+ ifd->ifd_count = 0;
+ for (t = ifd->ifd_records; t < ifd->ifd_records + NRECORDS; t++) {
+ t->ift_size = 0;
+ t->ift_packet = 0;
+ }
+ ifd->ifd_if = ifp;
+ return (1);
+}
+
+traceon(file)
+ char *file;
+{
+
+ if (ftrace != NULL)
+ return;
+ ftrace = fopen(file, "a");
+ if (ftrace == NULL)
+ return;
+ dup2(fileno(ftrace), 1);
+ dup2(fileno(ftrace), 2);
+ tracing = 1;
+}
+
+traceoff()
+{
+ if (!tracing)
+ return;
+ if (ftrace != NULL)
+ fclose(ftrace);
+ ftrace = NULL;
+ tracing = 0;
+}
+
+trace(ifd, who, p, len, m)
+ register struct ifdebug *ifd;
+ struct sockaddr *who;
+ char *p;
+ int len, m;
+{
+ register struct iftrace *t;
+
+ if (ifd->ifd_records == 0)
+ return;
+ t = ifd->ifd_front++;
+ if (ifd->ifd_front >= ifd->ifd_records + NRECORDS)
+ ifd->ifd_front = ifd->ifd_records;
+ if (ifd->ifd_count < NRECORDS)
+ ifd->ifd_count++;
+ if (t->ift_size > 0 && t->ift_packet)
+ free(t->ift_packet);
+ t->ift_packet = 0;
+ t->ift_stamp = time(0);
+ t->ift_who = *who;
+ if (len > 0) {
+ t->ift_packet = malloc(len);
+ if (t->ift_packet)
+ bcopy(p, t->ift_packet, len);
+ else
+ len = 0;
+ }
+ t->ift_size = len;
+ t->ift_metric = m;
+}
+
+traceaction(fd, action, rt)
+ FILE *fd;
+ char *action;
+ struct rt_entry *rt;
+{
+ struct sockaddr_ns *dst, *gate;
+ static struct bits {
+ int t_bits;
+ char *t_name;
+ } flagbits[] = {
+ { RTF_UP, "UP" },
+ { RTF_GATEWAY, "GATEWAY" },
+ { RTF_HOST, "HOST" },
+ { 0 }
+ }, statebits[] = {
+ { RTS_PASSIVE, "PASSIVE" },
+ { RTS_REMOTE, "REMOTE" },
+ { RTS_INTERFACE,"INTERFACE" },
+ { RTS_CHANGED, "CHANGED" },
+ { 0 }
+ };
+ register struct bits *p;
+ register int first;
+ char *cp;
+ struct interface *ifp;
+
+ if (fd == NULL)
+ return;
+ fprintf(fd, "%s ", action);
+ dst = (struct sockaddr_ns *)&rt->rt_dst;
+ gate = (struct sockaddr_ns *)&rt->rt_router;
+ fprintf(fd, "dst %s, ", xns_ntoa(&dst->sns_addr));
+ fprintf(fd, "router %s, metric %d, flags",
+ xns_ntoa(&gate->sns_addr), rt->rt_metric);
+ cp = " %s";
+ for (first = 1, p = flagbits; p->t_bits > 0; p++) {
+ if ((rt->rt_flags & p->t_bits) == 0)
+ continue;
+ fprintf(fd, cp, p->t_name);
+ if (first) {
+ cp = "|%s";
+ first = 0;
+ }
+ }
+ fprintf(fd, " state");
+ cp = " %s";
+ for (first = 1, p = statebits; p->t_bits > 0; p++) {
+ if ((rt->rt_state & p->t_bits) == 0)
+ continue;
+ fprintf(fd, cp, p->t_name);
+ if (first) {
+ cp = "|%s";
+ first = 0;
+ }
+ }
+ putc('\n', fd);
+ if (!tracepackets && (rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
+ dumpif(fd, rt->rt_ifp);
+ fflush(fd);
+}
+
+dumpif(fd, ifp)
+ register struct interface *ifp;
+ FILE *fd;
+{
+ if (ifp->int_input.ifd_count || ifp->int_output.ifd_count) {
+ fprintf(fd, "*** Packet history for interface %s ***\n",
+ ifp->int_name);
+ dumptrace(fd, "to", &ifp->int_output);
+ dumptrace(fd, "from", &ifp->int_input);
+ fprintf(fd, "*** end packet history ***\n");
+ }
+}
+
+dumptrace(fd, dir, ifd)
+ FILE *fd;
+ char *dir;
+ register struct ifdebug *ifd;
+{
+ register struct iftrace *t;
+ char *cp = !strcmp(dir, "to") ? "Output" : "Input";
+
+ if (ifd->ifd_front == ifd->ifd_records &&
+ ifd->ifd_front->ift_size == 0) {
+ fprintf(fd, "%s: no packets.\n", cp);
+ return;
+ }
+ fprintf(fd, "%s trace:\n", cp);
+ t = ifd->ifd_front - ifd->ifd_count;
+ if (t < ifd->ifd_records)
+ t += NRECORDS;
+ for ( ; ifd->ifd_count; ifd->ifd_count--, t++) {
+ if (t >= ifd->ifd_records + NRECORDS)
+ t = ifd->ifd_records;
+ if (t->ift_size == 0)
+ continue;
+ fprintf(fd, "%.24s: metric=%d\n", ctime(&t->ift_stamp),
+ t->ift_metric);
+ dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size);
+ }
+}
+
+dumppacket(fd, dir, who, cp, size)
+ FILE *fd;
+ struct sockaddr_ns *who; /* should be sockaddr */
+ char *dir, *cp;
+ register int size;
+{
+ register struct rip *msg = (struct rip *)cp;
+ register struct netinfo *n;
+ char *xns_nettoa();
+
+ if (msg->rip_cmd && ntohs(msg->rip_cmd) < RIPCMD_MAX)
+ fprintf(fd, "%s %s %s#%x", ripcmds[ntohs(msg->rip_cmd)],
+ dir, xns_ntoa(&who->sns_addr), ntohs(who->sns_addr.x_port));
+ else {
+ fprintf(fd, "Bad cmd 0x%x %s %s#%x\n", ntohs(msg->rip_cmd),
+ dir, xns_ntoa(&who->sns_addr), ntohs(who->sns_addr.x_port));
+ fprintf(fd, "size=%d cp=%x packet=%x\n", size, cp, packet);
+ return;
+ }
+ switch (ntohs(msg->rip_cmd)) {
+
+ case RIPCMD_REQUEST:
+ case RIPCMD_RESPONSE:
+ fprintf(fd, ":\n");
+ size -= sizeof (u_short);
+ n = msg->rip_nets;
+ for (; size > 0; n++, size -= sizeof (struct netinfo)) {
+ if (size < sizeof (struct netinfo))
+ break;
+ fprintf(fd, "\tnet %s metric %d\n",
+ xns_nettoa(n->rip_dst),
+ ntohs(n->rip_metric));
+ }
+ break;
+
+ }
+}
+
+union ns_net_u net;
+
+char *
+xns_nettoa(val)
+union ns_net val;
+{
+ static char buf[100];
+ net.net_e = val;
+ (void)sprintf(buf, "%lx", ntohl(net.long_e));
+ return (buf);
+}
+
+
+char *
+xns_ntoa(addr)
+struct ns_addr *addr;
+{
+ static char buf[100];
+
+ (void)sprintf(buf, "%s#%x:%x:%x:%x:%x:%x",
+ xns_nettoa(addr->x_net),
+ addr->x_host.c_host[0], addr->x_host.c_host[1],
+ addr->x_host.c_host[2], addr->x_host.c_host[3],
+ addr->x_host.c_host[4], addr->x_host.c_host[5]);
+
+ return(buf);
+}
projects / unix-history / commitdiff