[apple/network_cmds.git] / routed.tproj / trace.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1983, 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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 acknowledgment:
 *	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.
 *
 *	@(#)defs.h	8.1 (Berkeley) 6/5/93
 */


/*
 * Routing Table Management Daemon
 */
#define	RIPCMDS
#include "defs.h"
#include <sys/stat.h>
#include <sys/signal.h>
#include <fcntl.h>
#include <stdlib.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;
{
	static int iftraceinit();

	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;
}

void
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)
		memmove(t->ift_packet, p, 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
b7080c8e A	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
	7	* Reserved. This file contains Original Code and/or Modifications of
	8	* Original Code as defined in and that are subject to the Apple Public
	9	* Source License Version 1.0 (the 'License'). You may not use this file
	10	* except in compliance with the License. Please obtain a copy of the
	11	* License at http://www.apple.com/publicsource and read it before using
	12	* this file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	19	* License for the specific language governing rights and limitations
	20	* under the License."
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24	/*
	25	* Copyright (c) 1983, 1988, 1993
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgment:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*
	56	* @(#)defs.h 8.1 (Berkeley) 6/5/93
	57	*/
	58
	59
	60	/*
	61	* Routing Table Management Daemon
	62	*/
	63	#define RIPCMDS
	64	#include "defs.h"
65	#include <sys/stat.h>
66	#include <sys/signal.h>
67	#include <fcntl.h>
68	#include <stdlib.h>
69	#include "pathnames.h"
70
71	#define NRECORDS 50 /* size of circular trace buffer */
72	#ifdef DEBUG
73	FILE *ftrace = stdout;
74	int traceactions = 0;
75	#endif
76	static struct timeval lastlog;
77	static char *savetracename;
78
79	traceinit(ifp)
80	register struct interface *ifp;
81	{
82	static int iftraceinit();
83
84	if (iftraceinit(ifp, &ifp->int_input) &&
85	iftraceinit(ifp, &ifp->int_output))
86	return;
87	tracehistory = 0;
88	fprintf(stderr, "traceinit: can't init %s\n", ifp->int_name);
89	}
90
91	static
92	iftraceinit(ifp, ifd)
93	struct interface *ifp;
94	register struct ifdebug *ifd;
95	{
96	register struct iftrace *t;
97
98	ifd->ifd_records =
99	(struct iftrace )malloc(NRECORDS sizeof (struct iftrace));
100	if (ifd->ifd_records == 0)
101	return (0);
102	ifd->ifd_front = ifd->ifd_records;
103	ifd->ifd_count = 0;
104	for (t = ifd->ifd_records; t < ifd->ifd_records + NRECORDS; t++) {
105	t->ift_size = 0;
106	t->ift_packet = 0;
107	}
108	ifd->ifd_if = ifp;
109	return (1);
110	}
111
112	traceon(file)
113	char *file;
114	{
115	struct stat stbuf;
116
117	if (ftrace != NULL)
118	return;
119	if (stat(file, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) != S_IFREG)
120	return;
121	savetracename = file;
122	(void) gettimeofday(&now, (struct timezone *)NULL);
123	ftrace = fopen(file, "a");
124	if (ftrace == NULL)
125	return;
126	dup2(fileno(ftrace), 1);
127	dup2(fileno(ftrace), 2);
128	traceactions = 1;
129	fprintf(ftrace, "Tracing enabled %s\n", ctime((time_t *)&now.tv_sec));
130	}
131
132	traceoff()
133	{
134	if (!traceactions)
135	return;
136	if (ftrace != NULL) {
137	int fd = open(_PATH_DEVNULL, O_RDWR);
138
139	fprintf(ftrace, "Tracing disabled %s\n",
140	ctime((time_t *)&now.tv_sec));
141	fflush(ftrace);
142	(void) dup2(fd, 1);
143	(void) dup2(fd, 2);
144	(void) close(fd);
145	fclose(ftrace);
146	ftrace = NULL;
147	}
148	traceactions = 0;
149	tracehistory = 0;
150	tracepackets = 0;
151	tracecontents = 0;
152	}
153
154	void
155	sigtrace(s)
156	int s;
157	{
158
159	if (s == SIGUSR2)
160	traceoff();
161	else if (ftrace == NULL && savetracename)
162	traceon(savetracename);
163	else
164	bumploglevel();
165	}
166
167	/*
168	* Move to next higher level of tracing when -t option processed or
169	* SIGUSR1 is received. Successive levels are:
170	* traceactions
171	* traceactions + tracepackets
172	* traceactions + tracehistory (packets and contents after change)
173	* traceactions + tracepackets + tracecontents
174	*/
175	bumploglevel()
176	{
177
178	(void) gettimeofday(&now, (struct timezone *)NULL);
179	if (traceactions == 0) {
180	traceactions++;
181	if (ftrace)
182	fprintf(ftrace, "Tracing actions started %s\n",
183	ctime((time_t *)&now.tv_sec));
184	} else if (tracepackets == 0) {
185	tracepackets++;
186	tracehistory = 0;
187	tracecontents = 0;
188	if (ftrace)
189	fprintf(ftrace, "Tracing packets started %s\n",
190	ctime((time_t *)&now.tv_sec));
191	} else if (tracehistory == 0) {
192	tracehistory++;
193	if (ftrace)
194	fprintf(ftrace, "Tracing history started %s\n",
195	ctime((time_t *)&now.tv_sec));
196	} else {
197	tracepackets++;
198	tracecontents++;
199	tracehistory = 0;
200	if (ftrace)
201	fprintf(ftrace, "Tracing packet contents started %s\n",
202	ctime((time_t *)&now.tv_sec));
203	}
204	if (ftrace)
205	fflush(ftrace);
206	}
207
208	trace(ifd, who, p, len, m)
209	register struct ifdebug *ifd;
210	struct sockaddr *who;
211	char *p;
212	int len, m;
213	{
214	register struct iftrace *t;
215
216	if (ifd->ifd_records == 0)
217	return;
218	t = ifd->ifd_front++;
219	if (ifd->ifd_front >= ifd->ifd_records + NRECORDS)
220	ifd->ifd_front = ifd->ifd_records;
221	if (ifd->ifd_count < NRECORDS)
222	ifd->ifd_count++;
223	if (t->ift_size > 0 && t->ift_size < len && t->ift_packet) {
224	free(t->ift_packet);
225	t->ift_packet = 0;
226	}
227	t->ift_stamp = now;
228	t->ift_who = *who;
229	if (len > 0 && t->ift_packet == 0) {
230	t->ift_packet = malloc(len);
231	if (t->ift_packet == 0)
232	len = 0;
233	}
234	if (len > 0)
235	memmove(t->ift_packet, p, len);
236	t->ift_size = len;
237	t->ift_metric = m;
238	}
239
240	traceaction(fd, action, rt)
241	FILE *fd;
242	char *action;
243	struct rt_entry *rt;
244	{
245	struct sockaddr_in dst, gate;
246	static struct bits {
247	int t_bits;
248	char *t_name;
249	} flagbits[] = {
250	{ RTF_UP, "UP" },
251	{ RTF_GATEWAY, "GATEWAY" },
252	{ RTF_HOST, "HOST" },
253	{ 0 }
254	}, statebits[] = {
255	{ RTS_PASSIVE, "PASSIVE" },
256	{ RTS_REMOTE, "REMOTE" },
257	{ RTS_INTERFACE,"INTERFACE" },
258	{ RTS_CHANGED, "CHANGED" },
259	{ RTS_INTERNAL, "INTERNAL" },
260	{ RTS_EXTERNAL, "EXTERNAL" },
261	{ RTS_SUBNET, "SUBNET" },
262	{ 0 }
263	};
264	register struct bits *p;
265	register int first;
266	char *cp;
267	struct interface *ifp;
268
269	if (fd == NULL)
270	return;
271	if (lastlog.tv_sec != now.tv_sec \|\| lastlog.tv_usec != now.tv_usec) {
272	fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
273	lastlog = now;
274	}
275	fprintf(fd, "%s ", action);
276	dst = (struct sockaddr_in *)&rt->rt_dst;
277	gate = (struct sockaddr_in *)&rt->rt_router;
278	fprintf(fd, "dst %s, ", inet_ntoa(dst->sin_addr));
279	fprintf(fd, "router %s, metric %d, flags",
280	inet_ntoa(gate->sin_addr), rt->rt_metric);
281	cp = " %s";
282	for (first = 1, p = flagbits; p->t_bits > 0; p++) {
283	if ((rt->rt_flags & p->t_bits) == 0)
284	continue;
285	fprintf(fd, cp, p->t_name);
286	if (first) {
287	cp = "\|%s";
288	first = 0;
289	}
290	}
291	fprintf(fd, " state");
292	cp = " %s";
293	for (first = 1, p = statebits; p->t_bits > 0; p++) {
294	if ((rt->rt_state & p->t_bits) == 0)
295	continue;
296	fprintf(fd, cp, p->t_name);
297	if (first) {
298	cp = "\|%s";
299	first = 0;
300	}
301	}
302	fprintf(fd, " timer %d\n", rt->rt_timer);
303	if (tracehistory && !tracepackets &&
304	(rt->rt_state & RTS_PASSIVE) == 0 && rt->rt_ifp)
305	dumpif(fd, rt->rt_ifp);
306	fflush(fd);
307	if (ferror(fd))
308	traceoff();
309	}
310
311	tracenewmetric(fd, rt, newmetric)
312	FILE *fd;
313	struct rt_entry *rt;
314	int newmetric;
315	{
316	struct sockaddr_in dst, gate;
317
318	if (fd == NULL)
319	return;
320	if (lastlog.tv_sec != now.tv_sec \|\| lastlog.tv_usec != now.tv_usec) {
321	fprintf(fd, "\n%.19s:\n", ctime((time_t *)&now.tv_sec));
322	lastlog = now;
323	}
324	dst = (struct sockaddr_in *)&rt->rt_dst;
325	gate = (struct sockaddr_in *)&rt->rt_router;
326	fprintf(fd, "CHANGE metric dst %s, ", inet_ntoa(dst->sin_addr));
327	fprintf(fd, "router %s, from %d to %d\n",
328	inet_ntoa(gate->sin_addr), rt->rt_metric, newmetric);
329	fflush(fd);
330	if (ferror(fd))
331	traceoff();
332	}
333
334	dumpif(fd, ifp)
335	FILE *fd;
336	register struct interface *ifp;
337	{
338	if (ifp->int_input.ifd_count \|\| ifp->int_output.ifd_count) {
339	fprintf(fd, "* Packet history for interface %s *\n",
340	ifp->int_name);
341	#ifdef notneeded
342	dumptrace(fd, "to", &ifp->int_output);
343	#endif
344	dumptrace(fd, "from", &ifp->int_input);
345	fprintf(fd, "* end packet history *\n");
346	}
347	}
348
349	dumptrace(fd, dir, ifd)
350	FILE *fd;
351	char *dir;
352	register struct ifdebug *ifd;
353	{
354	register struct iftrace *t;
355	char *cp = !strcmp(dir, "to") ? "Output" : "Input";
356
357	if (ifd->ifd_front == ifd->ifd_records &&
358	ifd->ifd_front->ift_size == 0) {
359	fprintf(fd, "%s: no packets.\n", cp);
360	fflush(fd);
361	return;
362	}
363	fprintf(fd, "%s trace:\n", cp);
364	t = ifd->ifd_front - ifd->ifd_count;
365	if (t < ifd->ifd_records)
366	t += NRECORDS;
367	for ( ; ifd->ifd_count; ifd->ifd_count--, t++) {
368	if (t >= ifd->ifd_records + NRECORDS)
369	t = ifd->ifd_records;
370	if (t->ift_size == 0)
371	continue;
372	dumppacket(fd, dir, &t->ift_who, t->ift_packet, t->ift_size,
373	&t->ift_stamp);
374	}
375	}
376
377	dumppacket(fd, dir, who, cp, size, stamp)
378	FILE *fd;
379	struct sockaddr_in who; / should be sockaddr */
380	char dir, cp;
381	register int size;
382	struct timeval *stamp;
383	{
384	register struct rip msg = (struct rip )cp;
385	register struct netinfo *n;
386
387	if (fd == NULL)
388	return;
389	if (msg->rip_cmd && msg->rip_cmd < RIPCMD_MAX)
390	fprintf(fd, "%s %s %s.%d %.19s:\n", ripcmds[msg->rip_cmd],
391	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port),
392	ctime((time_t *)&stamp->tv_sec));
393	else {
394	fprintf(fd, "Bad cmd 0x%x %s %x.%d %.19s\n", msg->rip_cmd,
395	dir, inet_ntoa(who->sin_addr), ntohs(who->sin_port));
396	fprintf(fd, "size=%d cp=%x packet=%x\n", size, cp, packet,
397	ctime((time_t *)&stamp->tv_sec));
398	fflush(fd);
399	return;
400	}
401	if (tracepackets && tracecontents == 0) {
402	fflush(fd);
403	return;
404	}
405	switch (msg->rip_cmd) {
406
407	case RIPCMD_REQUEST:
408	case RIPCMD_RESPONSE:
409	size -= 4 * sizeof (char);
410	n = msg->rip_nets;
411	for (; size > 0; n++, size -= sizeof (struct netinfo)) {
412	if (size < sizeof (struct netinfo)) {
413	fprintf(fd, "(truncated record, len %d)\n",
414	size);
415	break;
416	}
417	if (sizeof(n->rip_dst.sa_family) > 1)
418	n->rip_dst.sa_family = ntohs(n->rip_dst.sa_family);
419
420	switch ((int)n->rip_dst.sa_family) {
421
422	case AF_INET:
423	fprintf(fd, "\tdst %s metric %d\n",
424	#define satosin(sa) ((struct sockaddr_in *)&sa)
425	inet_ntoa(satosin(n->rip_dst)->sin_addr),
426	ntohl(n->rip_metric));
427	break;
428
429	default:
430	fprintf(fd, "\taf %d? metric %d\n",
431	n->rip_dst.sa_family,
432	ntohl(n->rip_metric));
433	break;
434	}
435	}
436	break;
437
438	case RIPCMD_TRACEON:
439	fprintf(fd, "\tfile=%*s\n", size, msg->rip_tracefile);
440	break;
441
442	case RIPCMD_TRACEOFF:
443	break;
444	}
445	fflush(fd);
446	if (ferror(fd))
447	traceoff();
448	}