[apple/network_cmds.git] / tcpdump.tproj / print-ntp.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) 1990, 1991, 1992, 1993, 1994, 1995, 1996
 *	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: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Format and print ntp packets.
 *	By Jeffrey Mogul/DECWRL
 *	loosely based on print-bootp.c
 */

#ifndef lint
static const char rcsid[] =
    "@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-ntp.c,v 1.1.1.1 1999/05/02 03:58:34 wsanchez Exp $ (LBL)";
#endif

#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>

#if __STDC__
struct mbuf;
struct rtentry;
#endif
#include <net/if.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>

#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include "interface.h"
#include "addrtoname.h"
#undef MODEMASK					/* Solaris sucks */
#include "ntp.h"

static void p_sfix(const struct s_fixedpt *);
static void p_ntp_time(const struct l_fixedpt *);
static void p_ntp_delta(const struct l_fixedpt *, const struct l_fixedpt *);

/*
 * Print ntp requests
 */
void
ntp_print(register const u_char *cp, u_int length)
{
	register const struct ntpdata *bp;
	int mode, version, leapind;
	static char rclock[5];

	bp = (struct ntpdata *)cp;
	/* Note funny sized packets */
	if (length != sizeof(struct ntpdata))
		(void)printf(" [len=%d]", length);

	TCHECK(bp->status);

	version = (int)(bp->status & VERSIONMASK) >> 3;
	printf(" v%d", version);

	leapind = bp->status & LEAPMASK;
	switch (leapind) {

	case NO_WARNING:
		break;

	case PLUS_SEC:
		fputs(" +1s", stdout);
		break;

	case MINUS_SEC:
		fputs(" -1s", stdout);
		break;
	}

	mode = bp->status & MODEMASK;
	switch (mode) {

	case MODE_UNSPEC:	/* unspecified */
		fputs(" unspec", stdout);
		break;

	case MODE_SYM_ACT:	/* symmetric active */
		fputs(" sym_act", stdout);
		break;

	case MODE_SYM_PAS:	/* symmetric passive */
		fputs(" sym_pas", stdout);
		break;

	case MODE_CLIENT:	/* client */
		fputs(" client", stdout);
		break;

	case MODE_SERVER:	/* server */
		fputs(" server", stdout);
		break;

	case MODE_BROADCAST:	/* broadcast */
		fputs(" bcast", stdout);
		break;

	case MODE_RES1:		/* reserved */
		fputs(" res1", stdout);
		break;

	case MODE_RES2:		/* reserved */
		fputs(" res2", stdout);
		break;

	}

	TCHECK(bp->stratum);
	printf(" strat %d", bp->stratum);

	TCHECK(bp->ppoll);
	printf(" poll %d", bp->ppoll);

	/* Can't TCHECK bp->precision bitfield so bp->distance + 0 instead */
	TCHECK2(bp->distance, 0);
	printf(" prec %d", bp->precision);

	if (!vflag)
		return;

	TCHECK(bp->distance);
	fputs(" dist ", stdout);
	p_sfix(&bp->distance);

	TCHECK(bp->dispersion);
	fputs(" disp ", stdout);
	p_sfix(&bp->dispersion);

	TCHECK(bp->refid);
	fputs(" ref ", stdout);
	/* Interpretation depends on stratum */
	switch (bp->stratum) {

	case UNSPECIFIED:
		printf("(unspec)");
		break;

	case PRIM_REF:
		strncpy(rclock, (char *)&(bp->refid), 4);
		rclock[4] = '\0';
		fputs(rclock, stdout);
		break;

	case INFO_QUERY:
		printf("%s INFO_QUERY", ipaddr_string(&(bp->refid)));
		/* this doesn't have more content */
		return;

	case INFO_REPLY:
		printf("%s INFO_REPLY", ipaddr_string(&(bp->refid)));
		/* this is too complex to be worth printing */
		return;

	default:
		printf("%s", ipaddr_string(&(bp->refid)));
		break;
	}

	TCHECK(bp->reftime);
	putchar('@');
	p_ntp_time(&(bp->reftime));

	TCHECK(bp->org);
	fputs(" orig ", stdout);
	p_ntp_time(&(bp->org));

	TCHECK(bp->rec);
	fputs(" rec ", stdout);
	p_ntp_delta(&(bp->org), &(bp->rec));

	TCHECK(bp->xmt);
	fputs(" xmt ", stdout);
	p_ntp_delta(&(bp->org), &(bp->xmt));

	return;

trunc:
	fputs(" [|ntp]", stdout);
}

static void
p_sfix(register const struct s_fixedpt *sfp)
{
	register int i;
	register int f;
	register float ff;

	i = ntohs(sfp->int_part);
	f = ntohs(sfp->fraction);
	ff = f / 65536.0;	/* shift radix point by 16 bits */
	f = ff * 1000000.0;	/* Treat fraction as parts per million */
	printf("%d.%06d", i, f);
}

#define	FMAXINT	(4294967296.0)	/* floating point rep. of MAXINT */

static void
p_ntp_time(register const struct l_fixedpt *lfp)
{
	register int32_t i;
	register u_int32_t uf;
	register u_int32_t f;
	register float ff;

	i = ntohl(lfp->int_part);
	uf = ntohl(lfp->fraction);
	ff = uf;
	if (ff < 0.0)		/* some compilers are buggy */
		ff += FMAXINT;
	ff = ff / FMAXINT;	/* shift radix point by 32 bits */
	f = ff * 1000000000.0;	/* treat fraction as parts per billion */
	printf("%u.%09d", i, f);
}

/* Prints time difference between *lfp and *olfp */
static void
p_ntp_delta(register const struct l_fixedpt *olfp,
	    register const struct l_fixedpt *lfp)
{
	register int32_t i;
	register u_int32_t uf;
	register u_int32_t ouf;
	register u_int32_t f;
	register float ff;
	int signbit;

	i = ntohl(lfp->int_part) - ntohl(olfp->int_part);

	uf = ntohl(lfp->fraction);
	ouf = ntohl(olfp->fraction);

	if (i > 0) {		/* new is definitely greater than old */
		signbit = 0;
		f = uf - ouf;
		if (ouf > uf)	/* must borrow from high-order bits */
			i -= 1;
	} else if (i < 0) {	/* new is definitely less than old */
		signbit = 1;
		f = ouf - uf;
		if (uf > ouf)	/* must carry into the high-order bits */
			i += 1;
		i = -i;
	} else {		/* int_part is zero */
		if (uf > ouf) {
			signbit = 0;
			f = uf - ouf;
		} else {
			signbit = 1;
			f = ouf - uf;
		}
	}

	ff = f;
	if (ff < 0.0)		/* some compilers are buggy */
		ff += FMAXINT;
	ff = ff / FMAXINT;	/* shift radix point by 32 bits */
	f = ff * 1000000000.0;	/* treat fraction as parts per billion */
	if (signbit)
		putchar('-');
	else
		putchar('+');
	printf("%d.%09d", i, f);
}
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) 1990, 1991, 1992, 1993, 1994, 1995, 1996
	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: (1) source code distributions
	30	* retain the above copyright notice and this paragraph in its entirety, (2)
	31	* distributions including binary code include the above copyright notice and
	32	* this paragraph in its entirety in the documentation or other materials
	33	* provided with the distribution, and (3) all advertising materials mentioning
	34	* features or use of this software display the following acknowledgement:
	35	* ``This product includes software developed by the University of California,
	36	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	37	* the University nor the names of its contributors may be used to endorse
	38	* or promote products derived from this software without specific prior
	39	* written permission.
	40	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	41	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	42	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	43	*
	44	* Format and print ntp packets.
	45	* By Jeffrey Mogul/DECWRL
	46	* loosely based on print-bootp.c
	47	*/
	48
	49	#ifndef lint
	50	static const char rcsid[] =
	51	"@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-ntp.c,v 1.1.1.1 1999/05/02 03:58:34 wsanchez Exp $ (LBL)";
	52	#endif
	53
	54	#include <sys/param.h>
	55	#include <sys/time.h>
	56	#include <sys/socket.h>
	57
	58	#if __STDC__
	59	struct mbuf;
	60	struct rtentry;
	61	#endif
	62	#include <net/if.h>
	63
	64	#include <netinet/in.h>
65	#include <netinet/if_ether.h>
66
67	#include <ctype.h>
68	#include <stdio.h>
69	#include <string.h>
70
71	#include "interface.h"
72	#include "addrtoname.h"
73	#undef MODEMASK /* Solaris sucks */
74	#include "ntp.h"
75
76	static void p_sfix(const struct s_fixedpt *);
77	static void p_ntp_time(const struct l_fixedpt *);
78	static void p_ntp_delta(const struct l_fixedpt , const struct l_fixedpt );
79
80	/*
81	* Print ntp requests
82	*/
83	void
84	ntp_print(register const u_char *cp, u_int length)
85	{
86	register const struct ntpdata *bp;
87	int mode, version, leapind;
88	static char rclock[5];
89
90	bp = (struct ntpdata *)cp;
91	/* Note funny sized packets */
92	if (length != sizeof(struct ntpdata))
93	(void)printf(" [len=%d]", length);
94
95	TCHECK(bp->status);
96
97	version = (int)(bp->status & VERSIONMASK) >> 3;
98	printf(" v%d", version);
99
100	leapind = bp->status & LEAPMASK;
101	switch (leapind) {
102
103	case NO_WARNING:
104	break;
105
106	case PLUS_SEC:
107	fputs(" +1s", stdout);
108	break;
109
110	case MINUS_SEC:
111	fputs(" -1s", stdout);
112	break;
113	}
114
115	mode = bp->status & MODEMASK;
116	switch (mode) {
117
118	case MODE_UNSPEC: /* unspecified */
119	fputs(" unspec", stdout);
120	break;
121
122	case MODE_SYM_ACT: /* symmetric active */
123	fputs(" sym_act", stdout);
124	break;
125
126	case MODE_SYM_PAS: /* symmetric passive */
127	fputs(" sym_pas", stdout);
128	break;
129
130	case MODE_CLIENT: /* client */
131	fputs(" client", stdout);
132	break;
133
134	case MODE_SERVER: /* server */
135	fputs(" server", stdout);
136	break;
137
138	case MODE_BROADCAST: /* broadcast */
139	fputs(" bcast", stdout);
140	break;
141
142	case MODE_RES1: /* reserved */
143	fputs(" res1", stdout);
144	break;
145
146	case MODE_RES2: /* reserved */
147	fputs(" res2", stdout);
148	break;
149
150	}
151
152	TCHECK(bp->stratum);
153	printf(" strat %d", bp->stratum);
154
155	TCHECK(bp->ppoll);
156	printf(" poll %d", bp->ppoll);
157
158	/* Can't TCHECK bp->precision bitfield so bp->distance + 0 instead */
159	TCHECK2(bp->distance, 0);
160	printf(" prec %d", bp->precision);
161
162	if (!vflag)
163	return;
164
165	TCHECK(bp->distance);
166	fputs(" dist ", stdout);
167	p_sfix(&bp->distance);
168
169	TCHECK(bp->dispersion);
170	fputs(" disp ", stdout);
171	p_sfix(&bp->dispersion);
172
173	TCHECK(bp->refid);
174	fputs(" ref ", stdout);
175	/* Interpretation depends on stratum */
176	switch (bp->stratum) {
177
178	case UNSPECIFIED:
179	printf("(unspec)");
180	break;
181
182	case PRIM_REF:
183	strncpy(rclock, (char *)&(bp->refid), 4);
184	rclock[4] = '\0';
185	fputs(rclock, stdout);
186	break;
187
188	case INFO_QUERY:
189	printf("%s INFO_QUERY", ipaddr_string(&(bp->refid)));
190	/* this doesn't have more content */
191	return;
192
193	case INFO_REPLY:
194	printf("%s INFO_REPLY", ipaddr_string(&(bp->refid)));
195	/* this is too complex to be worth printing */
196	return;
197
198	default:
199	printf("%s", ipaddr_string(&(bp->refid)));
200	break;
201	}
202
203	TCHECK(bp->reftime);
204	putchar('@');
205	p_ntp_time(&(bp->reftime));
206
207	TCHECK(bp->org);
208	fputs(" orig ", stdout);
209	p_ntp_time(&(bp->org));
210
211	TCHECK(bp->rec);
212	fputs(" rec ", stdout);
213	p_ntp_delta(&(bp->org), &(bp->rec));
214
215	TCHECK(bp->xmt);
216	fputs(" xmt ", stdout);
217	p_ntp_delta(&(bp->org), &(bp->xmt));
218
219	return;
220
221	trunc:
222	fputs(" [\|ntp]", stdout);
223	}
224
225	static void
226	p_sfix(register const struct s_fixedpt *sfp)
227	{
228	register int i;
229	register int f;
230	register float ff;
231
232	i = ntohs(sfp->int_part);
233	f = ntohs(sfp->fraction);
234	ff = f / 65536.0; /* shift radix point by 16 bits */
235	f = ff * 1000000.0; /* Treat fraction as parts per million */
236	printf("%d.%06d", i, f);
237	}
238
239	#define FMAXINT (4294967296.0) /* floating point rep. of MAXINT */
240
241	static void
242	p_ntp_time(register const struct l_fixedpt *lfp)
243	{
244	register int32_t i;
245	register u_int32_t uf;
246	register u_int32_t f;
247	register float ff;
248
249	i = ntohl(lfp->int_part);
250	uf = ntohl(lfp->fraction);
251	ff = uf;
252	if (ff < 0.0) /* some compilers are buggy */
253	ff += FMAXINT;
254	ff = ff / FMAXINT; /* shift radix point by 32 bits */
255	f = ff * 1000000000.0; /* treat fraction as parts per billion */
256	printf("%u.%09d", i, f);
257	}
258
259	/* Prints time difference between lfp and olfp */
260	static void
261	p_ntp_delta(register const struct l_fixedpt *olfp,
262	register const struct l_fixedpt *lfp)
263	{
264	register int32_t i;
265	register u_int32_t uf;
266	register u_int32_t ouf;
267	register u_int32_t f;
268	register float ff;
269	int signbit;
270
271	i = ntohl(lfp->int_part) - ntohl(olfp->int_part);
272
273	uf = ntohl(lfp->fraction);
274	ouf = ntohl(olfp->fraction);
275
276	if (i > 0) { /* new is definitely greater than old */
277	signbit = 0;
278	f = uf - ouf;
279	if (ouf > uf) /* must borrow from high-order bits */
280	i -= 1;
281	} else if (i < 0) { /* new is definitely less than old */
282	signbit = 1;
283	f = ouf - uf;
284	if (uf > ouf) /* must carry into the high-order bits */
285	i += 1;
286	i = -i;
287	} else { /* int_part is zero */
288	if (uf > ouf) {
289	signbit = 0;
290	f = uf - ouf;
291	} else {
292	signbit = 1;
293	f = ouf - uf;
294	}
295	}
296
297	ff = f;
298	if (ff < 0.0) /* some compilers are buggy */
299	ff += FMAXINT;
300	ff = ff / FMAXINT; /* shift radix point by 32 bits */
301	f = ff * 1000000000.0; /* treat fraction as parts per billion */
302	if (signbit)
303	putchar('-');
304	else
305	putchar('+');
306	printf("%d.%09d", i, f);
307	}