[unix-history] / usr / src / sbin / routed / trace.c

/*
 * Copyright (c) 1983, 1988 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)trace.c	5.10 (Berkeley) %G%";
#endif /* not lint */

/*
 * Routing Table Management Daemon
 */
#define	RIPCMDS
#include "defs.h"
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/signal.h>
#include "pathnames.h"

#define	NRECORDS	50		/* size of circular trace buffer */
#ifdef DEBUG
FILE	*ftrace = stdout;
int	traceactions = 0;
#endif
static	struct timeval lastlog;
static	char *savetracename;

traceinit(ifp)
	register struct interface *ifp;
{

	if (iftraceinit(ifp, &ifp->int_input) &&
	    iftraceinit(ifp, &ifp->int_output))
		return;
	tracehistory = 0;
	fprintf(stderr, "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;
{
	struct stat stbuf;

	if (ftrace != NULL)
		return;
	if (stat(file, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) != S_IFREG)
		return;
	savetracename = file;
	(void) gettimeofday(&now, (struct timezone *)NULL);
	ftrace = fopen(file, "a");
	if (ftrace == NULL)
		return;
	dup2(fileno(ftrace), 1);
	dup2(fileno(ftrace), 2);
	traceactions = 1;
	fprintf(ftrace, "Tracing enabled %s\n", ctime((time_t *)&now.tv_sec));
}

traceoff()
{
	if (!traceactions)
		return;
	if (ftrace != NULL) {
		int fd = open(_PATH_DEVNULL, O_RDWR);

		fprintf(ftrace, "Tracing disabled %s\n",
		    ctime((time_t *)&now.tv_sec));
		fflush(ftrace);
		(void) dup2(fd, 1);
		(void) dup2(fd, 2);
		(void) close(fd);
		fclose(ftrace);
		ftrace = NULL;
	}
	traceactions = 0;
	tracehistory = 0;
	tracepackets = 0;
	tracecontents = 0;
}

sigtrace(s)
	int s;
{

	if (s == SIGUSR2)
		traceoff();
	else if (ftrace == NULL && savetracename)
		traceon(savetracename);
	else
		bumploglevel();
}

/*
 * Move to next higher level of tracing when -t option processed or
 * SIGUSR1 is received.  Successive levels are:
 *	traceactions
 *	traceactions + tracepackets
 *	traceactions + tracehistory (packets and contents after change)
 *	traceactions + tracepackets + tracecontents
 */
bumploglevel()
{

	(void) gettimeofday(&now, (struct timezone *)NULL);
	if (traceactions == 0) {
		traceactions++;
		if (ftrace)
			fprintf(ftrace, "Tracing actions started %s\n",
			    ctime((time_t *)&now.tv_sec));
	} else if (tracepackets == 0) {
		tracepackets++;
		tracehistory = 0;
		tracecontents = 0;
		if (ftrace)
			fprintf(ftrace, "Tracing packets started %s\n",
			    ctime((time_t *)&now.tv_sec));
	} else if (tracehistory == 0) {
		tracehistory++;
		if (ftrace)
			fprintf(ftrace, "Tracing history started %s\n",
			    ctime((time_t *)&now.tv_sec));
	} else {
		tracepackets++;
		tracecontents++;
		tracehistory = 0;
		if (ftrace)
			fprintf(ftrace, "Tracing packet contents started %s\n",
			    ctime((time_t *)&now.tv_sec));
	}
	if (ftrace)
		fflush(ftrace);
}

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_size < len && t->ift_packet) {
		free(t->ift_packet);
		t->ift_packet = 0;
	}
	t->ift_stamp = now;
	t->ift_who = *who;
	if (len > 0 && t->ift_packet == 0) {
		t->ift_packet = malloc(len);
		if (t->ift_packet == 0)
			len = 0;
	}
	if (len > 0)
		bcopy(p, t->ift_packet, len);
	t->ift_size = len;
	t->ift_metric = m;
}

traceaction(fd, action, rt)
	FILE *fd;
	char *action;
	struct rt_entry *rt;
{
	struct sockaddr_in *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" },
		{ RTS_INTERNAL,	"INTERNAL" },
		{ RTS_EXTERNAL,	"EXTERNAL" },
		{ RTS_SUBNET,	"SUBNET" },
		{ 0 }
	};
	register struct bits *p;
	register int first;
	char *cp;
	struct interface *ifp;

	if (fd == NULL)
		return;
	if (lastlog.tv_sec != now.tv_sec || lastlog.tv_usec != now.tv_usec) {
		fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
		lastlog = now;
	}
	fprintf(fd, "%s ", action);
	dst = (struct sockaddr_in *)&rt->rt_dst;
	gate = (struct sockaddr_in *)&rt->rt_router;
	fprintf(fd, "dst %s, ", inet_ntoa(dst->sin_addr));
	fprintf(fd, "router %s, metric %d, flags",
	     inet_ntoa(gate->sin_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;
		}
	}
	fprintf(fd, " timer %d\n", rt->rt_timer);
	if (tracehistory && !tracepackets &&
	    (rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
		dumpif(fd, rt->rt_ifp);
	fflush(fd);
	if (ferror(fd))
		traceoff();
}

tracenewmetric(fd, rt, newmetric)
	FILE *fd;
	struct rt_entry *rt;
	int newmetric;
{
	struct sockaddr_in *dst, *gate;

	if (fd == NULL)
		return;
	if (lastlog.tv_sec != now.tv_sec || lastlog.tv_usec != now.tv_usec) {
		fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
		lastlog = now;
	}
	dst = (struct sockaddr_in *)&rt->rt_dst;
	gate = (struct sockaddr_in *)&rt->rt_router;
	fprintf(fd, "CHANGE metric dst %s, ", inet_ntoa(dst->sin_addr));
	fprintf(fd, "router %s, from %d to %d\n",
	     inet_ntoa(gate->sin_addr), rt->rt_metric, newmetric);
	fflush(fd);
	if (ferror(fd))
		traceoff();
}

dumpif(fd, ifp)
	FILE *fd;
	register struct interface *ifp;
{
	if (ifp->int_input.ifd_count || ifp->int_output.ifd_count) {
		fprintf(fd, "*** Packet history for interface %s ***\n",
			ifp->int_name);
#ifdef notneeded
		dumptrace(fd, "to", &ifp->int_output);
#endif
		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);
		fflush(fd);
		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;
		dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size,
		    &t->ift_stamp);
	}
}

dumppacket(fd, dir, who, cp, size, stamp)
	FILE *fd;
	struct sockaddr_in *who;		/* should be sockaddr */
	char *dir, *cp;
	register int size;
	struct timeval *stamp;
{
	register struct rip *msg = (struct rip *)cp;
	register struct netinfo *n;

	if (fd == NULL)
		return;
	if (msg->rip_cmd && msg->rip_cmd < RIPCMD_MAX)
		fprintf(fd, "%s %s %s.%d %.19s:\n", ripcmds[msg->rip_cmd],
		    dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port),
		    ctime((time_t *)&stamp->tv_sec));
	else {
		fprintf(fd, "Bad cmd 0x%x %s %x.%d %.19s\n", msg->rip_cmd,
		    dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
		fprintf(fd, "size=%d cp=%x packet=%x\n", size, cp, packet,
		    ctime((time_t *)&stamp->tv_sec));
		fflush(fd);
		return;
	}
	if (tracepackets && tracecontents == 0) {
		fflush(fd);
		return;
	}
	switch (msg->rip_cmd) {

	case RIPCMD_REQUEST:
	case RIPCMD_RESPONSE:
		size -= 4 * sizeof (char);
		n = msg->rip_nets;
		for (; size > 0; n++, size -= sizeof (struct netinfo)) {
			if (size < sizeof (struct netinfo)) {
				fprintf(fd, "(truncated record, len %d)\n",
				    size);
				break;
			}
			if (sizeof(n->rip_dst.sa_family) > 1)
			    n->rip_dst.sa_family = ntohs(n->rip_dst.sa_family);

			switch ((int)n->rip_dst.sa_family) {

			case AF_INET:
				fprintf(fd, "\tdst %s metric %d\n",
#define	satosin(sa)	((struct sockaddr_in *)&sa)
				     inet_ntoa(satosin(n->rip_dst)->sin_addr),
				     ntohl(n->rip_metric));
				break;

			default:
				fprintf(fd, "\taf %d? metric %d\n",
				     n->rip_dst.sa_family,
				     ntohl(n->rip_metric));
				break;
			}
		}
		break;

	case RIPCMD_TRACEON:
		fprintf(fd, "\tfile=%*s\n", size, msg->rip_tracefile);
		break;

	case RIPCMD_TRACEOFF:
		break;
	}
	fflush(fd);
	if (ferror(fd))
		traceoff();
}
Commit	Line	Data
5ff67f98	1	/*
3256e1bb	2	* Copyright (c) 1983, 1988 Regents of the University of California.
0eb85d71 KB	3	* All rights reserved.
0eb85d71 KB	4	*
d60d530a	5	* %sccs.include.redist.c%
5ff67f98 DF	6	*/
5ff67f98 DF	7
f036a54d	8	#ifndef lint
d60d530a	9	static char sccsid[] = "@(#)trace.c 5.10 (Berkeley) %G%";
0eb85d71	10	#endif /* not lint */
f036a54d SL	11
	12	/*
	13	* Routing Table Management Daemon
	14	*/
	15	#define RIPCMDS
7fe7fe74	16	#include "defs.h"
9d9e2fa1	17	#include <sys/file.h>
09069ad0	18	#include <sys/stat.h>
3256e1bb	19	#include <sys/signal.h>
7abf8d65	20	#include "pathnames.h"
f036a54d SL	21
	22	#define NRECORDS 50 /* size of circular trace buffer */
	23	#ifdef DEBUG
	24	FILE *ftrace = stdout;
4033c8f6	25	int traceactions = 0;
f036a54d	26	#endif
4033c8f6 MK	27	static struct timeval lastlog;
4033c8f6 MK	28	static char *savetracename;
f036a54d SL	29
	30	traceinit(ifp)
	31	register struct interface *ifp;
	32	{
	33
	34	if (iftraceinit(ifp, &ifp->int_input) &&
	35	iftraceinit(ifp, &ifp->int_output))
	36	return;
3256e1bb	37	tracehistory = 0;
f036a54d SL	38	fprintf(stderr, "traceinit: can't init %s\n", ifp->int_name);
	39	}
	40
	41	static
	42	iftraceinit(ifp, ifd)
	43	struct interface *ifp;
	44	register struct ifdebug *ifd;
	45	{
	46	register struct iftrace *t;
	47
	48	ifd->ifd_records =
	49	(struct iftrace )malloc(NRECORDS sizeof (struct iftrace));
	50	if (ifd->ifd_records == 0)
	51	return (0);
	52	ifd->ifd_front = ifd->ifd_records;
b7e4f8be	53	ifd->ifd_count = 0;
f036a54d SL	54	for (t = ifd->ifd_records; t < ifd->ifd_records + NRECORDS; t++) {
	55	t->ift_size = 0;
	56	t->ift_packet = 0;
	57	}
	58	ifd->ifd_if = ifp;
	59	return (1);
	60	}
	61
	62	traceon(file)
	63	char *file;
	64	{
09069ad0	65	struct stat stbuf;
f036a54d SL	66
	67	if (ftrace != NULL)
	68	return;
09069ad0 MK	69	if (stat(file, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) != S_IFREG)
09069ad0 MK	70	return;
4033c8f6 MK	71	savetracename = file;
4033c8f6 MK	72	(void) gettimeofday(&now, (struct timezone *)NULL);
f036a54d SL	73	ftrace = fopen(file, "a");
	74	if (ftrace == NULL)
	75	return;
	76	dup2(fileno(ftrace), 1);
	77	dup2(fileno(ftrace), 2);
3256e1bb	78	traceactions = 1;
4033c8f6	79	fprintf(ftrace, "Tracing enabled %s\n", ctime((time_t *)&now.tv_sec));
f036a54d SL	80	}
	81
	82	traceoff()
	83	{
3256e1bb	84	if (!traceactions)
f036a54d	85	return;
9d9e2fa1	86	if (ftrace != NULL) {
7abf8d65	87	int fd = open(_PATH_DEVNULL, O_RDWR);
9d9e2fa1	88
4033c8f6 MK	89	fprintf(ftrace, "Tracing disabled %s\n",
	90	ctime((time_t *)&now.tv_sec));
	91	fflush(ftrace);
9d9e2fa1 MK	92	(void) dup2(fd, 1);
	93	(void) dup2(fd, 2);
	94	(void) close(fd);
f036a54d	95	fclose(ftrace);
9d9e2fa1 MK	96	ftrace = NULL;
9d9e2fa1 MK	97	}
3256e1bb MK	98	traceactions = 0;
3256e1bb MK	99	tracehistory = 0;
4033c8f6 MK	100	tracepackets = 0;
4033c8f6 MK	101	tracecontents = 0;
3256e1bb MK	102	}
	103
	104	sigtrace(s)
	105	int s;
	106	{
4033c8f6 MK	107
4033c8f6 MK	108	if (s == SIGUSR2)
3256e1bb	109	traceoff();
4033c8f6 MK	110	else if (ftrace == NULL && savetracename)
	111	traceon(savetracename);
	112	else
	113	bumploglevel();
	114	}
	115
	116	/*
	117	* Move to next higher level of tracing when -t option processed or
	118	* SIGUSR1 is received. Successive levels are:
	119	* traceactions
	120	* traceactions + tracepackets
	121	* traceactions + tracehistory (packets and contents after change)
	122	* traceactions + tracepackets + tracecontents
	123	*/
	124	bumploglevel()
	125	{
	126
	127	(void) gettimeofday(&now, (struct timezone *)NULL);
	128	if (traceactions == 0) {
3256e1bb	129	traceactions++;
4033c8f6 MK	130	if (ftrace)
	131	fprintf(ftrace, "Tracing actions started %s\n",
	132	ctime((time_t *)&now.tv_sec));
	133	} else if (tracepackets == 0) {
	134	tracepackets++;
	135	tracehistory = 0;
	136	tracecontents = 0;
	137	if (ftrace)
	138	fprintf(ftrace, "Tracing packets started %s\n",
	139	ctime((time_t *)&now.tv_sec));
	140	} else if (tracehistory == 0) {
3256e1bb	141	tracehistory++;
4033c8f6 MK	142	if (ftrace)
	143	fprintf(ftrace, "Tracing history started %s\n",
	144	ctime((time_t *)&now.tv_sec));
	145	} else {
3256e1bb	146	tracepackets++;
4033c8f6	147	tracecontents++;
3256e1bb	148	tracehistory = 0;
4033c8f6 MK	149	if (ftrace)
	150	fprintf(ftrace, "Tracing packet contents started %s\n",
	151	ctime((time_t *)&now.tv_sec));
3256e1bb	152	}
4033c8f6 MK	153	if (ftrace)
4033c8f6 MK	154	fflush(ftrace);
f036a54d SL	155	}
	156
	157	trace(ifd, who, p, len, m)
	158	register struct ifdebug *ifd;
	159	struct sockaddr *who;
	160	char *p;
	161	int len, m;
	162	{
	163	register struct iftrace *t;
	164
	165	if (ifd->ifd_records == 0)
	166	return;
	167	t = ifd->ifd_front++;
	168	if (ifd->ifd_front >= ifd->ifd_records + NRECORDS)
	169	ifd->ifd_front = ifd->ifd_records;
b7e4f8be MK	170	if (ifd->ifd_count < NRECORDS)
b7e4f8be MK	171	ifd->ifd_count++;
9bd44906	172	if (t->ift_size > 0 && t->ift_size < len && t->ift_packet) {
f036a54d	173	free(t->ift_packet);
9bd44906 MK	174	t->ift_packet = 0;
9bd44906 MK	175	}
4033c8f6	176	t->ift_stamp = now;
f036a54d	177	t->ift_who = *who;
9bd44906	178	if (len > 0 && t->ift_packet == 0) {
f036a54d	179	t->ift_packet = malloc(len);
9bd44906	180	if (t->ift_packet == 0)
f036a54d SL	181	len = 0;
f036a54d SL	182	}
9bd44906 MK	183	if (len > 0)
9bd44906 MK	184	bcopy(p, t->ift_packet, len);
f036a54d SL	185	t->ift_size = len;
	186	t->ift_metric = m;
	187	}
	188
	189	traceaction(fd, action, rt)
	190	FILE *fd;
	191	char *action;
	192	struct rt_entry *rt;
	193	{
	194	struct sockaddr_in dst, gate;
	195	static struct bits {
	196	int t_bits;
	197	char *t_name;
	198	} flagbits[] = {
	199	{ RTF_UP, "UP" },
	200	{ RTF_GATEWAY, "GATEWAY" },
	201	{ RTF_HOST, "HOST" },
	202	{ 0 }
	203	}, statebits[] = {
	204	{ RTS_PASSIVE, "PASSIVE" },
	205	{ RTS_REMOTE, "REMOTE" },
	206	{ RTS_INTERFACE,"INTERFACE" },
	207	{ RTS_CHANGED, "CHANGED" },
09069ad0 MK	208	{ RTS_INTERNAL, "INTERNAL" },
	209	{ RTS_EXTERNAL, "EXTERNAL" },
	210	{ RTS_SUBNET, "SUBNET" },
f036a54d SL	211	{ 0 }
	212	};
	213	register struct bits *p;
	214	register int first;
	215	char *cp;
	216	struct interface *ifp;
	217
	218	if (fd == NULL)
	219	return;
4033c8f6 MK	220	if (lastlog.tv_sec != now.tv_sec \|\| lastlog.tv_usec != now.tv_usec) {
	221	fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
	222	lastlog = now;
3256e1bb	223	}
f036a54d SL	224	fprintf(fd, "%s ", action);
	225	dst = (struct sockaddr_in *)&rt->rt_dst;
	226	gate = (struct sockaddr_in *)&rt->rt_router;
2513c24a SL	227	fprintf(fd, "dst %s, ", inet_ntoa(dst->sin_addr));
	228	fprintf(fd, "router %s, metric %d, flags",
	229	inet_ntoa(gate->sin_addr), rt->rt_metric);
f036a54d SL	230	cp = " %s";
	231	for (first = 1, p = flagbits; p->t_bits > 0; p++) {
	232	if ((rt->rt_flags & p->t_bits) == 0)
	233	continue;
	234	fprintf(fd, cp, p->t_name);
	235	if (first) {
	236	cp = "\|%s";
	237	first = 0;
	238	}
	239	}
	240	fprintf(fd, " state");
	241	cp = " %s";
	242	for (first = 1, p = statebits; p->t_bits > 0; p++) {
	243	if ((rt->rt_state & p->t_bits) == 0)
	244	continue;
	245	fprintf(fd, cp, p->t_name);
	246	if (first) {
	247	cp = "\|%s";
	248	first = 0;
	249	}
	250	}
3256e1bb	251	fprintf(fd, " timer %d\n", rt->rt_timer);
4033c8f6 MK	252	if (tracehistory && !tracepackets &&
4033c8f6 MK	253	(rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
f036a54d SL	254	dumpif(fd, rt->rt_ifp);
f036a54d SL	255	fflush(fd);
4033c8f6 MK	256	if (ferror(fd))
4033c8f6 MK	257	traceoff();
f036a54d SL	258	}
f036a54d SL	259
3256e1bb MK	260	tracenewmetric(fd, rt, newmetric)
	261	FILE *fd;
	262	struct rt_entry *rt;
	263	int newmetric;
	264	{
	265	struct sockaddr_in dst, gate;
	266
	267	if (fd == NULL)
	268	return;
4033c8f6 MK	269	if (lastlog.tv_sec != now.tv_sec \|\| lastlog.tv_usec != now.tv_usec) {
	270	fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
	271	lastlog = now;
	272	}
3256e1bb MK	273	dst = (struct sockaddr_in *)&rt->rt_dst;
	274	gate = (struct sockaddr_in *)&rt->rt_router;
	275	fprintf(fd, "CHANGE metric dst %s, ", inet_ntoa(dst->sin_addr));
	276	fprintf(fd, "router %s, from %d to %d\n",
	277	inet_ntoa(gate->sin_addr), rt->rt_metric, newmetric);
	278	fflush(fd);
4033c8f6 MK	279	if (ferror(fd))
4033c8f6 MK	280	traceoff();
3256e1bb MK	281	}
3256e1bb MK	282
f036a54d	283	dumpif(fd, ifp)
4033c8f6	284	FILE *fd;
f036a54d SL	285	register struct interface *ifp;
f036a54d SL	286	{
b7e4f8be MK	287	if (ifp->int_input.ifd_count \|\| ifp->int_output.ifd_count) {
	288	fprintf(fd, "* Packet history for interface %s *\n",
	289	ifp->int_name);
3256e1bb	290	#ifdef notneeded
b7e4f8be	291	dumptrace(fd, "to", &ifp->int_output);
3256e1bb	292	#endif
b7e4f8be MK	293	dumptrace(fd, "from", &ifp->int_input);
	294	fprintf(fd, "* end packet history *\n");
	295	}
f036a54d SL	296	}
	297
	298	dumptrace(fd, dir, ifd)
	299	FILE *fd;
	300	char *dir;
	301	register struct ifdebug *ifd;
	302	{
	303	register struct iftrace *t;
	304	char *cp = !strcmp(dir, "to") ? "Output" : "Input";
	305
	306	if (ifd->ifd_front == ifd->ifd_records &&
	307	ifd->ifd_front->ift_size == 0) {
	308	fprintf(fd, "%s: no packets.\n", cp);
9bd44906	309	fflush(fd);
f036a54d SL	310	return;
	311	}
	312	fprintf(fd, "%s trace:\n", cp);
b7e4f8be MK	313	t = ifd->ifd_front - ifd->ifd_count;
	314	if (t < ifd->ifd_records)
	315	t += NRECORDS;
	316	for ( ; ifd->ifd_count; ifd->ifd_count--, t++) {
	317	if (t >= ifd->ifd_records + NRECORDS)
	318	t = ifd->ifd_records;
f036a54d SL	319	if (t->ift_size == 0)
f036a54d SL	320	continue;
3256e1bb MK	321	dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size,
3256e1bb MK	322	&t->ift_stamp);
f036a54d SL	323	}
	324	}
	325
4033c8f6	326	dumppacket(fd, dir, who, cp, size, stamp)
f036a54d SL	327	FILE *fd;
	328	struct sockaddr_in who; / should be sockaddr */
	329	char dir, cp;
	330	register int size;
4033c8f6	331	struct timeval *stamp;
f036a54d SL	332	{
	333	register struct rip msg = (struct rip )cp;
	334	register struct netinfo *n;
	335
4033c8f6 MK	336	if (fd == NULL)
4033c8f6 MK	337	return;
f036a54d	338	if (msg->rip_cmd && msg->rip_cmd < RIPCMD_MAX)
4033c8f6	339	fprintf(fd, "%s %s %s.%d %.19s:\n", ripcmds[msg->rip_cmd],
3256e1bb	340	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port),
4033c8f6 MK	341	ctime((time_t *)&stamp->tv_sec));
	342	else {
	343	fprintf(fd, "Bad cmd 0x%x %s %x.%d %.19s\n", msg->rip_cmd,
	344	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
	345	fprintf(fd, "size=%d cp=%x packet=%x\n", size, cp, packet,
	346	ctime((time_t *)&stamp->tv_sec));
	347	fflush(fd);
	348	return;
	349	}
	350	if (tracepackets && tracecontents == 0) {
9bd44906	351	fflush(fd);
f036a54d SL	352	return;
	353	}
	354	switch (msg->rip_cmd) {
	355
	356	case RIPCMD_REQUEST:
	357	case RIPCMD_RESPONSE:
f036a54d SL	358	size -= 4 * sizeof (char);
	359	n = msg->rip_nets;
	360	for (; size > 0; n++, size -= sizeof (struct netinfo)) {
4033c8f6 MK	361	if (size < sizeof (struct netinfo)) {
	362	fprintf(fd, "(truncated record, len %d)\n",
	363	size);
f036a54d	364	break;
4033c8f6 MK	365	}
	366	if (sizeof(n->rip_dst.sa_family) > 1)
	367	n->rip_dst.sa_family = ntohs(n->rip_dst.sa_family);
	368
	369	switch ((int)n->rip_dst.sa_family) {
	370
	371	case AF_INET:
	372	fprintf(fd, "\tdst %s metric %d\n",
2513c24a	373	#define satosin(sa) ((struct sockaddr_in *)&sa)
4033c8f6 MK	374	inet_ntoa(satosin(n->rip_dst)->sin_addr),
	375	ntohl(n->rip_metric));
	376	break;
	377
	378	default:
	379	fprintf(fd, "\taf %d? metric %d\n",
	380	n->rip_dst.sa_family,
	381	ntohl(n->rip_metric));
	382	break;
	383	}
f036a54d SL	384	}
	385	break;
	386
	387	case RIPCMD_TRACEON:
3256e1bb	388	fprintf(fd, "\tfile=%*s\n", size, msg->rip_tracefile);
f036a54d SL	389	break;
	390
	391	case RIPCMD_TRACEOFF:
f036a54d SL	392	break;
f036a54d SL	393	}
9bd44906	394	fflush(fd);
4033c8f6 MK	395	if (ferror(fd))
4033c8f6 MK	396	traceoff();
f036a54d	397	}