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

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)trace.c	5.1 (Berkeley) %G%";
#endif not lint

/*
 * Routing Table Management Daemon
 */
#define	RIPCMDS
#include "defs.h"

#define	NRECORDS	50		/* size of circular trace buffer */
#ifdef DEBUG
FILE	*ftrace = stdout;
int	tracing = 1;
#endif

traceinit(ifp)
	register struct interface *ifp;
{

	if (iftraceinit(ifp, &ifp->int_input) &&
	    iftraceinit(ifp, &ifp->int_output))
		return;
	tracing = 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;
{

	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_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" },
		{ 0 }
	};
	register struct bits *p;
	register int first;
	char *cp;
	struct interface *ifp;

	if (fd == NULL)
		return;
	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;
		}
	}
	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;
{
	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_in *who;		/* should be sockaddr */
	char *dir, *cp;
	register int size;
{
	register struct rip *msg = (struct rip *)cp;
	register struct netinfo *n;

	if (msg->rip_cmd && msg->rip_cmd < RIPCMD_MAX)
		fprintf(fd, "%s %s %s.%d", ripcmds[msg->rip_cmd],
		    dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
	else {
		fprintf(fd, "Bad cmd 0x%x %s %x.%d\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);
		return;
	}
	switch (msg->rip_cmd) {

	case RIPCMD_REQUEST:
	case RIPCMD_RESPONSE:
		fprintf(fd, ":\n");
		size -= 4 * sizeof (char);
		n = msg->rip_nets;
		for (; size > 0; n++, size -= sizeof (struct netinfo)) {
			if (size < sizeof (struct netinfo))
				break;
			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;

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

	case RIPCMD_TRACEOFF:
		fprintf(fd, "\n");
		break;
	}
}
Commit	Line	Data
5ff67f98 DF	1	/*
	2	* Copyright (c) 1983 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
f036a54d	7	#ifndef lint
5ff67f98 DF	8	static char sccsid[] = "@(#)trace.c 5.1 (Berkeley) %G%";
5ff67f98 DF	9	#endif not lint
f036a54d SL	10
	11	/*
	12	* Routing Table Management Daemon
	13	*/
	14	#define RIPCMDS
7fe7fe74	15	#include "defs.h"
f036a54d SL	16
	17	#define NRECORDS 50 /* size of circular trace buffer */
	18	#ifdef DEBUG
	19	FILE *ftrace = stdout;
	20	int tracing = 1;
	21	#endif
	22
	23	traceinit(ifp)
	24	register struct interface *ifp;
	25	{
	26
	27	if (iftraceinit(ifp, &ifp->int_input) &&
	28	iftraceinit(ifp, &ifp->int_output))
	29	return;
	30	tracing = 0;
	31	fprintf(stderr, "traceinit: can't init %s\n", ifp->int_name);
	32	}
	33
	34	static
	35	iftraceinit(ifp, ifd)
	36	struct interface *ifp;
	37	register struct ifdebug *ifd;
	38	{
	39	register struct iftrace *t;
	40
	41	ifd->ifd_records =
	42	(struct iftrace )malloc(NRECORDS sizeof (struct iftrace));
	43	if (ifd->ifd_records == 0)
	44	return (0);
	45	ifd->ifd_front = ifd->ifd_records;
b7e4f8be	46	ifd->ifd_count = 0;
f036a54d SL	47	for (t = ifd->ifd_records; t < ifd->ifd_records + NRECORDS; t++) {
	48	t->ift_size = 0;
	49	t->ift_packet = 0;
	50	}
	51	ifd->ifd_if = ifp;
	52	return (1);
	53	}
	54
	55	traceon(file)
	56	char *file;
	57	{
	58
	59	if (ftrace != NULL)
	60	return;
	61	ftrace = fopen(file, "a");
	62	if (ftrace == NULL)
	63	return;
	64	dup2(fileno(ftrace), 1);
	65	dup2(fileno(ftrace), 2);
	66	tracing = 1;
	67	}
	68
	69	traceoff()
	70	{
	71	if (!tracing)
	72	return;
	73	if (ftrace != NULL)
	74	fclose(ftrace);
	75	ftrace = NULL;
	76	tracing = 0;
	77	}
	78
	79	trace(ifd, who, p, len, m)
	80	register struct ifdebug *ifd;
	81	struct sockaddr *who;
	82	char *p;
	83	int len, m;
	84	{
	85	register struct iftrace *t;
	86
	87	if (ifd->ifd_records == 0)
	88	return;
	89	t = ifd->ifd_front++;
	90	if (ifd->ifd_front >= ifd->ifd_records + NRECORDS)
	91	ifd->ifd_front = ifd->ifd_records;
b7e4f8be MK	92	if (ifd->ifd_count < NRECORDS)
b7e4f8be MK	93	ifd->ifd_count++;
f036a54d SL	94	if (t->ift_size > 0 && t->ift_packet)
	95	free(t->ift_packet);
	96	t->ift_packet = 0;
	97	t->ift_stamp = time(0);
	98	t->ift_who = *who;
	99	if (len > 0) {
	100	t->ift_packet = malloc(len);
	101	if (t->ift_packet)
	102	bcopy(p, t->ift_packet, len);
	103	else
	104	len = 0;
	105	}
	106	t->ift_size = len;
	107	t->ift_metric = m;
	108	}
	109
	110	traceaction(fd, action, rt)
	111	FILE *fd;
	112	char *action;
	113	struct rt_entry *rt;
	114	{
	115	struct sockaddr_in dst, gate;
	116	static struct bits {
	117	int t_bits;
	118	char *t_name;
	119	} flagbits[] = {
	120	{ RTF_UP, "UP" },
	121	{ RTF_GATEWAY, "GATEWAY" },
	122	{ RTF_HOST, "HOST" },
	123	{ 0 }
	124	}, statebits[] = {
	125	{ RTS_PASSIVE, "PASSIVE" },
	126	{ RTS_REMOTE, "REMOTE" },
	127	{ RTS_INTERFACE,"INTERFACE" },
	128	{ RTS_CHANGED, "CHANGED" },
	129	{ 0 }
	130	};
	131	register struct bits *p;
	132	register int first;
	133	char *cp;
	134	struct interface *ifp;
	135
	136	if (fd == NULL)
	137	return;
	138	fprintf(fd, "%s ", action);
	139	dst = (struct sockaddr_in *)&rt->rt_dst;
	140	gate = (struct sockaddr_in *)&rt->rt_router;
2513c24a SL	141	fprintf(fd, "dst %s, ", inet_ntoa(dst->sin_addr));
	142	fprintf(fd, "router %s, metric %d, flags",
	143	inet_ntoa(gate->sin_addr), rt->rt_metric);
f036a54d SL	144	cp = " %s";
	145	for (first = 1, p = flagbits; p->t_bits > 0; p++) {
	146	if ((rt->rt_flags & p->t_bits) == 0)
	147	continue;
	148	fprintf(fd, cp, p->t_name);
	149	if (first) {
	150	cp = "\|%s";
	151	first = 0;
	152	}
	153	}
	154	fprintf(fd, " state");
	155	cp = " %s";
	156	for (first = 1, p = statebits; p->t_bits > 0; p++) {
	157	if ((rt->rt_state & p->t_bits) == 0)
	158	continue;
	159	fprintf(fd, cp, p->t_name);
	160	if (first) {
	161	cp = "\|%s";
	162	first = 0;
	163	}
	164	}
	165	putc('\n', fd);
d5568f13	166	if (!tracepackets && (rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
f036a54d SL	167	dumpif(fd, rt->rt_ifp);
	168	fflush(fd);
	169	}
	170
	171	dumpif(fd, ifp)
	172	register struct interface *ifp;
	173	{
b7e4f8be MK	174	if (ifp->int_input.ifd_count \|\| ifp->int_output.ifd_count) {
	175	fprintf(fd, "* Packet history for interface %s *\n",
	176	ifp->int_name);
	177	dumptrace(fd, "to", &ifp->int_output);
	178	dumptrace(fd, "from", &ifp->int_input);
	179	fprintf(fd, "* end packet history *\n");
	180	}
f036a54d SL	181	}
	182
	183	dumptrace(fd, dir, ifd)
	184	FILE *fd;
	185	char *dir;
	186	register struct ifdebug *ifd;
	187	{
	188	register struct iftrace *t;
	189	char *cp = !strcmp(dir, "to") ? "Output" : "Input";
	190
	191	if (ifd->ifd_front == ifd->ifd_records &&
	192	ifd->ifd_front->ift_size == 0) {
	193	fprintf(fd, "%s: no packets.\n", cp);
	194	return;
	195	}
	196	fprintf(fd, "%s trace:\n", cp);
b7e4f8be MK	197	t = ifd->ifd_front - ifd->ifd_count;
	198	if (t < ifd->ifd_records)
	199	t += NRECORDS;
	200	for ( ; ifd->ifd_count; ifd->ifd_count--, t++) {
	201	if (t >= ifd->ifd_records + NRECORDS)
	202	t = ifd->ifd_records;
f036a54d SL	203	if (t->ift_size == 0)
	204	continue;
	205	fprintf(fd, "%.24s: metric=%d\n", ctime(&t->ift_stamp),
	206	t->ift_metric);
	207	dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size);
	208	}
	209	}
	210
	211	dumppacket(fd, dir, who, cp, size)
	212	FILE *fd;
	213	struct sockaddr_in who; / should be sockaddr */
	214	char dir, cp;
	215	register int size;
	216	{
	217	register struct rip msg = (struct rip )cp;
	218	register struct netinfo *n;
	219
	220	if (msg->rip_cmd && msg->rip_cmd < RIPCMD_MAX)
2513c24a SL	221	fprintf(fd, "%s %s %s.%d", ripcmds[msg->rip_cmd],
2513c24a SL	222	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
f036a54d SL	223	else {
f036a54d SL	224	fprintf(fd, "Bad cmd 0x%x %s %x.%d\n", msg->rip_cmd,
2513c24a	225	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
f036a54d SL	226	fprintf(fd, "size=%d cp=%x packet=%x\n", size, cp, packet);
	227	return;
	228	}
	229	switch (msg->rip_cmd) {
	230
	231	case RIPCMD_REQUEST:
	232	case RIPCMD_RESPONSE:
	233	fprintf(fd, ":\n");
	234	size -= 4 * sizeof (char);
	235	n = msg->rip_nets;
	236	for (; size > 0; n++, size -= sizeof (struct netinfo)) {
	237	if (size < sizeof (struct netinfo))
	238	break;
2513c24a SL	239	fprintf(fd, "\tdst %s metric %d\n",
	240	#define satosin(sa) ((struct sockaddr_in *)&sa)
	241	inet_ntoa(satosin(n->rip_dst)->sin_addr),
	242	ntohl(n->rip_metric));
f036a54d SL	243	}
	244	break;
	245
	246	case RIPCMD_TRACEON:
	247	fprintf(fd, ", file=%*s\n", size, msg->rip_tracefile);
	248	break;
	249
	250	case RIPCMD_TRACEOFF:
	251	fprintf(fd, "\n");
	252	break;
	253	}
	254	}