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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/print-atalk.c	Lines:	0	247	0.0 %
Date:	2017-11-07	Branches:	0	152	0.0 %


/*	$OpenBSD: print-atalk.c,v 1.33 2017/08/30 09:23:00 otto Exp $	*/

/*
 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
 *	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 AppleTalk packets.
 */

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

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

#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/if_ether.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>

#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>

#include "interface.h"
#include "addrtoname.h"
#include "ethertype.h"
#include "extract.h"			/* must come after interface.h */
#include "appletalk.h"
#include "savestr.h"
#include "privsep.h"

static struct tok type2str[] = {
	{ ddpRTMP,		"rtmp" },
	{ ddpRTMPrequest,	"rtmpReq" },
	{ ddpECHO,		"echo" },
	{ ddpIP,		"IP" },
	{ ddpARP,		"ARP" },
	{ ddpKLAP,		"KLAP" },
	{ 0,			NULL }
};

struct aarp {
	u_int16_t	htype, ptype;
	u_int8_t	halen, palen;
	u_int16_t	op;
	u_int8_t	hsaddr[6];
	u_int8_t	psaddr[4];
	u_int8_t	hdaddr[6];
	u_int8_t	pdaddr[4];
};

static char tstr[] = "[|atalk]";

static void atp_print(const struct atATP *, u_int);
static void atp_bitmap_print(u_char);
static void nbp_print(const struct atNBP *, u_int, u_short, u_char, u_char);
static const char *print_cstring(const char *, const u_char *);
static const struct atNBPtuple *nbp_tuple_print(const struct atNBPtuple *,
						const u_char *,
						u_short, u_char, u_char);
static const struct atNBPtuple *nbp_name_print(const struct atNBPtuple *,
					       const u_char *);
static const char *ataddr_string(u_short, u_char);
static void ddp_print(const u_char *, u_int, int, u_short, u_char, u_char);
static const char *ddpskt_string(int);

/*
 * Print AppleTalk Datagram Delivery Protocol packets
 * without the LLAP encapsulating header (i.e.
 * from Ethertalk)
 */
void
atalk_print(const u_char *bp, u_int length)
{
	const struct atDDP *dp;
	u_short snet;

	if (length < ddpSize) {
		(void)printf(" [|ddp %d]", length);
		return;
	}
	dp = (const struct atDDP *)bp;
	snet = EXTRACT_16BITS(&dp->srcNet);
	printf("%s.%s", ataddr_string(snet, dp->srcNode),
	    ddpskt_string(dp->srcSkt));
	printf(" > %s.%s:",
	    ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
	    ddpskt_string(dp->dstSkt));
	bp += ddpSize;
	length -= ddpSize;
	ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
}

/*
 * Print AppleTalk Datagram Delivery Protocol packets
 * from localtalk (i.e. the 230 Kbps net built into
 * every Macintosh). We can get these from a localtalk
 * interface if we have one, or from UDP encapsulated tunnels.
 */
void
atalk_print_llap(const u_char *bp, u_int length)
{
	const struct LAP *lp;
	const struct atDDP *dp;
	const struct atShortDDP *sdp;
	u_short snet;

	if (length < sizeof(*lp)) {
		(void)printf(" [|llap %d]", length);
		return;
	}

	lp = (struct LAP *)bp;
	bp += sizeof(*lp);
	length -= sizeof(*lp);
	switch (lp->type) {

	case lapShortDDP:
		if (length < ddpSSize) {
			(void)printf(" [|sddp %d]", length);
			return;
		}
		sdp = (const struct atShortDDP *)bp;
		printf("%s.%s",
		    ataddr_string(0, lp->src), ddpskt_string(sdp->srcSkt));
		printf(" > %s.%s:",
		    ataddr_string(0, lp->dst), ddpskt_string(sdp->dstSkt));
		bp += ddpSSize;
		length -= ddpSSize;
		ddp_print(bp, length, sdp->type, 0, lp->src, sdp->srcSkt);
		break;

	case lapDDP:
		if (length < ddpSize) {
			(void)printf(" [|ddp %d]", length);
			return;
		}
		dp = (const struct atDDP *)bp;
		snet = EXTRACT_16BITS(&dp->srcNet);
		printf("%s.%s", ataddr_string(snet, dp->srcNode),
		    ddpskt_string(dp->srcSkt));
		printf(" > %s.%s:",
		    ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
		    ddpskt_string(dp->dstSkt));
		bp += ddpSize;
		length -= ddpSize;
		ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
		break;

#ifdef notdef
	case lapKLAP:
		klap_print(bp, length);
		break;
#endif

	default:
		printf("%d > %d at-lap#%d %d",
		    lp->src, lp->dst, lp->type, length);
		break;
	}
}

/* XXX should probably pass in the snap header and do checks like arp_print() */
void
aarp_print(const u_char *bp, u_int length)
{
	const struct aarp *ap;

#define AT(member) ataddr_string((ap->member[1]<<8)|ap->member[2],ap->member[3])

	printf("aarp ");
	ap = (const struct aarp *)bp;
	if (ntohs(ap->htype) == 1 && ntohs(ap->ptype) == ETHERTYPE_ATALK &&
	    ap->halen == 6 && ap->palen == 4 )
		switch (ntohs(ap->op)) {

		case 1:				/* request */
			(void)printf("who-has %s tell %s",
			    AT(pdaddr), AT(psaddr));
			return;

		case 2:				/* response */
			(void)printf("reply %s is-at %s",
			    AT(pdaddr), etheraddr_string(ap->hdaddr));
			return;

		case 3:				/* probe (oy!) */
			(void)printf("probe %s tell %s",
			    AT(pdaddr), AT(psaddr));
			return;
		}
	(void)printf("len %u op %u htype %u ptype %#x halen %u palen %u",
	    length, ntohs(ap->op), ntohs(ap->htype), ntohs(ap->ptype),
	    ap->halen, ap->palen);
}

static void
ddp_print(const u_char *bp, u_int length, int t,
	  u_short snet, u_char snode, u_char skt)
{

	if ((intptr_t)bp & (sizeof(long)-1)) {
		static u_char *abuf = NULL;
		int clen = snapend - bp;
		if (clen > snaplen)
			clen = snaplen;

		if (abuf == NULL) {
			abuf = malloc(snaplen);
			if (abuf == NULL)
				error("ddp_print: malloc");
		}
		memmove((char *)abuf, (char *)bp, min(length, clen));
		snapend = abuf + clen;
		packetp = abuf;
		bp = abuf;
	}

	switch (t) {

	case ddpNBP:
		nbp_print((const struct atNBP *)bp, length, snet, snode, skt);
		break;

	case ddpATP:
		atp_print((const struct atATP *)bp, length);
		break;

	default:
		(void)printf(" at-%s %d", tok2str(type2str, NULL, t), length);
		break;
	}
}

static void
atp_print(const struct atATP *ap, u_int length)
{
	char c;
	u_int32_t data;

	if ((const u_char *)(ap + 1) > snapend) {
		/* Just bail if we don't have the whole chunk. */
		fputs(tstr, stdout);
		return;
	}
	length -= sizeof(*ap);
	switch (ap->control & 0xc0) {

	case atpReqCode:
		(void)printf(" atp-req%s %d",
			     ap->control & atpXO? " " : "*",
			     EXTRACT_16BITS(&ap->transID));

		atp_bitmap_print(ap->bitmap);

		if (length != 0)
			(void)printf(" [len=%d]", length);

		switch (ap->control & (atpEOM|atpSTS)) {
		case atpEOM:
			(void)printf(" [EOM]");
			break;
		case atpSTS:
			(void)printf(" [STS]");
			break;
		case atpEOM|atpSTS:
			(void)printf(" [EOM,STS]");
			break;
		}
		break;

	case atpRspCode:
		(void)printf(" atp-resp%s%d:%d (%d)",
			     ap->control & atpEOM? "*" : " ",
			     EXTRACT_16BITS(&ap->transID), ap->bitmap, length);
		switch (ap->control & (atpXO|atpSTS)) {
		case atpXO:
			(void)printf(" [XO]");
			break;
		case atpSTS:
			(void)printf(" [STS]");
			break;
		case atpXO|atpSTS:
			(void)printf(" [XO,STS]");
			break;
		}
		break;

	case atpRelCode:
		(void)printf(" atp-rel  %d", EXTRACT_16BITS(&ap->transID));

		atp_bitmap_print(ap->bitmap);

		/* length should be zero */
		if (length)
			(void)printf(" [len=%d]", length);

		/* there shouldn't be any control flags */
		if (ap->control & (atpXO|atpEOM|atpSTS)) {
			c = '[';
			if (ap->control & atpXO) {
				(void)printf("%cXO", c);
				c = ',';
			}
			if (ap->control & atpEOM) {
				(void)printf("%cEOM", c);
				c = ',';
			}
			if (ap->control & atpSTS) {
				(void)printf("%cSTS", c);
				c = ',';
			}
			(void)printf("]");
		}
		break;

	default:
		(void)printf(" atp-0x%x  %d (%d)", ap->control,
			     EXTRACT_16BITS(&ap->transID), length);
		break;
	}
	data = EXTRACT_32BITS(&ap->userData);
	if (data != 0)
		(void)printf(" 0x%x", data);
}

static void
atp_bitmap_print(u_char bm)
{
	char c;
	int i;

	/*
	 * The '& 0xff' below is needed for compilers that want to sign
	 * extend a u_char, which is the case with the Ultrix compiler.
	 * (gcc is smart enough to eliminate it, at least on the Sparc).
	 */
	if ((bm + 1) & (bm & 0xff)) {
		c = '<';
		for (i = 0; bm; ++i) {
			if (bm & 1) {
				(void)printf("%c%d", c, i);
				c = ',';
			}
			bm >>= 1;
		}
		(void)printf(">");
	} else {
		for (i = 0; bm; ++i)
			bm >>= 1;
		if (i > 1)
			(void)printf("<0-%d>", i - 1);
		else
			(void)printf("<0>");
	}
}

static void
nbp_print(const struct atNBP *np, u_int length, u_short snet,
	  u_char snode, u_char skt)
{
	const struct atNBPtuple *tp =
			(struct atNBPtuple *)((u_char *)np + nbpHeaderSize);
	int i;
	const u_char *ep;

	if (length < nbpHeaderSize) {
		(void)printf(" truncated-nbp %d", length);
		return;
	}

	length -= nbpHeaderSize;
	if (length < 8) {
		/* must be room for at least one tuple */
		if (np->control == nbpNATLKerr) {
			(void)printf(" nbp-netatalk_err");
			return;
		} else if (np->control == nbpNATLKok) {
			(void)printf(" nbp-netatalk_ok");
			return;
		}
		(void)printf(" truncated-nbp nbp-0x%x  %d (%d)",
			np->control, np->id, length + nbpHeaderSize);
		return;
	}
	/* ep points to end of available data */
	ep = snapend;
	if ((const u_char *)tp > ep) {
		fputs(tstr, stdout);
		return;
	}
	switch (i = np->control & 0xf0) {

	case nbpBrRq:
	case nbpLkUp:
		(void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
			     np->id);
		if ((const u_char *)(tp + 1) > ep) {
			fputs(tstr, stdout);
			return;
		}
		(void)nbp_name_print(tp, ep);
		/*
		 * look for anomalies: the spec says there can only
		 * be one tuple, the address must match the source
		 * address and the enumerator should be zero.
		 */
		if ((np->control & 0xf) != 1)
			(void)printf(" [ntup=%d]", np->control & 0xf);
		if (tp->enumerator)
			(void)printf(" [enum=%d]", tp->enumerator);
		if (EXTRACT_16BITS(&tp->net) != snet ||
		    tp->node != snode || tp->skt != skt)
			(void)printf(" [addr=%s.%d]",
			    ataddr_string(EXTRACT_16BITS(&tp->net),
			    tp->node), tp->skt);
		break;

	case nbpLkUpReply:
		(void)printf(" nbp-reply %d:", np->id);

		/* print each of the tuples in the reply */
		for (i = np->control & 0xf; --i >= 0 && tp; )
			tp = nbp_tuple_print(tp, ep, snet, snode, skt);
		break;

	case nbpNATLKrgstr:
	case nbpNATLKunrgstr:
		(void)printf((i == nbpNATLKrgstr) ?
			" nbp-netatalk_rgstr %d:" :
			" nbp-netatalk_unrgstr %d:",
			np->id);
		for (i = np->control & 0xf; --i >= 0 && tp; )
			tp = nbp_tuple_print(tp, ep, snet, snode, skt);
		break;

	default:
		(void)printf(" nbp-0x%x  %d (%d)", np->control, np->id,
				length);
		break;
	}
}

/* print a counted string */
static const char *
print_cstring(const char *cp, const u_char *ep)
{
	u_int length;

	if (cp >= (const char *)ep) {
		fputs(tstr, stdout);
		return (0);
	}
	length = *cp++;

	/* Spec says string can be at most 32 bytes long */
	if (length > 32) {
		(void)printf("[len=%d]", length);
		return (0);
	}
	while ((int)--length >= 0) {
		if (cp >= (char *)ep) {
			fputs(tstr, stdout);
			return (0);
		}
		putchar(*cp++);
	}
	return (cp);
}

static const struct atNBPtuple *
nbp_tuple_print(const struct atNBPtuple *tp,
		const u_char *ep,
		u_short snet, u_char snode,
		u_char skt)
{
	const struct atNBPtuple *tpn;

	if ((const u_char *)(tp + 1) > ep) {
		fputs(tstr, stdout);
		return 0;
	}
	tpn = nbp_name_print(tp, ep);

	/* if the enumerator isn't 1, print it */
	if (tp->enumerator != 1)
		(void)printf("(%d)", tp->enumerator);

	/* if the socket doesn't match the src socket, print it */
	if (tp->skt != skt)
		(void)printf(" %d", tp->skt);

	/* if the address doesn't match the src address, it's an anomaly */
	if (EXTRACT_16BITS(&tp->net) != snet || tp->node != snode)
		(void)printf(" [addr=%s]",
		    ataddr_string(EXTRACT_16BITS(&tp->net), tp->node));

	return (tpn);
}

static const struct atNBPtuple *
nbp_name_print(const struct atNBPtuple *tp, const u_char *ep)
{
	const char *cp = (const char *)tp + nbpTupleSize;

	putchar(' ');

	/* Object */
	putchar('"');
	if ((cp = print_cstring(cp, ep)) != NULL) {
		/* Type */
		putchar(':');
		if ((cp = print_cstring(cp, ep)) != NULL) {
			/* Zone */
			putchar('@');
			if ((cp = print_cstring(cp, ep)) != NULL)
				putchar('"');
		}
	}
	return ((const struct atNBPtuple *)cp);
}


#define HASHNAMESIZE 4096

struct hnamemem {
	int addr;
	char *name;
	struct hnamemem *nxt;
};

static struct hnamemem hnametable[HASHNAMESIZE];

static const char *
ataddr_string(u_short atnet, u_char athost)
{
	struct hnamemem *tp, *tp2;
	int i = (atnet << 8) | athost;
	char nambuf[HOST_NAME_MAX+1 + 20];

	for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
		if (tp->addr == i)
			return (tp->name);

	/* didn't have the node name -- see if we've got the net name */
	i |= 255;
	for (tp2 = &hnametable[i & (HASHNAMESIZE-1)]; tp2->nxt; tp2 = tp2->nxt)
		if (tp2->addr == i) {
			tp->addr = (atnet << 8) | athost;
			tp->nxt = newhnamemem();
			(void)snprintf(nambuf, sizeof nambuf, "%s.%d",
			    tp2->name, athost);
			tp->name = savestr(nambuf);
			return (tp->name);
		}

	tp->addr = (atnet << 8) | athost;
	tp->nxt = newhnamemem();
	if (athost != 255)
		(void)snprintf(nambuf, sizeof nambuf, "%d.%d.%d",
			atnet >> 8, atnet & 0xff, athost);
	else
		(void)snprintf(nambuf, sizeof nambuf, "%d.%d",
			atnet >> 8, atnet & 0xff);
	tp->name = savestr(nambuf);

	return (tp->name);
}

static struct tok skt2str[] = {
	{ rtmpSkt,	"rtmp" },	/* routing table maintenance */
	{ nbpSkt,	"nis" },	/* name info socket */
	{ echoSkt,	"echo" },	/* AppleTalk echo protocol */
	{ zipSkt,	"zip" },	/* zone info protocol */
	{ 0,		NULL }
};

static const char *
ddpskt_string(int skt)
{
	static char buf[12];

	if (nflag) {
		(void)snprintf(buf, sizeof buf, "%d", skt);
		return (buf);
	}
	return (tok2str(skt2str, "%d", skt));
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-atalk.c,v 1.33 2017/08/30 09:23:00 otto Exp $ */
2
3			/*
4			* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that: (1) source code distributions
9			* retain the above copyright notice and this paragraph in its entirety, (2)
10			* distributions including binary code include the above copyright notice and
11			* this paragraph in its entirety in the documentation or other materials
12			* provided with the distribution, and (3) all advertising materials mentioning
13			* features or use of this software display the following acknowledgement:
14			* ``This product includes software developed by the University of California,
15			* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16			* the University nor the names of its contributors may be used to endorse
17			* or promote products derived from this software without specific prior
18			* written permission.
19			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20			* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22			*
23			* Format and print AppleTalk packets.
24			*/
25
26			#include <sys/time.h>
27			#include <sys/socket.h>
28
29			struct mbuf;
30			struct rtentry;
31			#include <net/if.h>
32
33			#include <netinet/in.h>
34			#include <netinet/ip.h>
35			#include <netinet/ip_var.h>
36			#include <netinet/if_ether.h>
37			#include <netinet/udp.h>
38			#include <netinet/udp_var.h>
39			#include <netinet/tcp.h>
40
41			#include <inttypes.h>
42			#include <stdio.h>
43			#include <stdlib.h>
44			#include <string.h>
45			#include <limits.h>
46
47			#include "interface.h"
48			#include "addrtoname.h"
49			#include "ethertype.h"
50			#include "extract.h" /* must come after interface.h */
51			#include "appletalk.h"
52			#include "savestr.h"
53			#include "privsep.h"
54
55			static struct tok type2str[] = {
56			{ ddpRTMP, "rtmp" },
57			{ ddpRTMPrequest, "rtmpReq" },
58			{ ddpECHO, "echo" },
59			{ ddpIP, "IP" },
60			{ ddpARP, "ARP" },
61			{ ddpKLAP, "KLAP" },
62			{ 0, NULL }
63			};
64
65			struct aarp {
66			u_int16_t htype, ptype;
67			u_int8_t halen, palen;
68			u_int16_t op;
69			u_int8_t hsaddr[6];
70			u_int8_t psaddr[4];
71			u_int8_t hdaddr[6];
72			u_int8_t pdaddr[4];
73			};
74
75			static char tstr[] = "[\|atalk]";
76
77			static void atp_print(const struct atATP *, u_int);
78			static void atp_bitmap_print(u_char);
79			static void nbp_print(const struct atNBP *, u_int, u_short, u_char, u_char);
80			static const char print_cstring(const char , const u_char *);
81			static const struct atNBPtuple nbp_tuple_print(const struct atNBPtuple ,
82			const u_char *,
83			u_short, u_char, u_char);
84			static const struct atNBPtuple nbp_name_print(const struct atNBPtuple ,
85			const u_char *);
86			static const char *ataddr_string(u_short, u_char);
87			static void ddp_print(const u_char *, u_int, int, u_short, u_char, u_char);
88			static const char *ddpskt_string(int);
89
90			/*
91			* Print AppleTalk Datagram Delivery Protocol packets
92			* without the LLAP encapsulating header (i.e.
93			* from Ethertalk)
94			*/
95			void
96			atalk_print(const u_char *bp, u_int length)
97			{
98			const struct atDDP *dp;
99			u_short snet;
100
101			if (length < ddpSize) {
102			(void)printf(" [\|ddp %d]", length);
103			return;
104			}
105			dp = (const struct atDDP *)bp;
106			snet = EXTRACT_16BITS(&dp->srcNet);
107			printf("%s.%s", ataddr_string(snet, dp->srcNode),
108			ddpskt_string(dp->srcSkt));
109			printf(" > %s.%s:",
110			ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
111			ddpskt_string(dp->dstSkt));
112			bp += ddpSize;
113			length -= ddpSize;
114			ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
115			}
116
117			/*
118			* Print AppleTalk Datagram Delivery Protocol packets
119			* from localtalk (i.e. the 230 Kbps net built into
120			* every Macintosh). We can get these from a localtalk
121			* interface if we have one, or from UDP encapsulated tunnels.
122			*/
123			void
124			atalk_print_llap(const u_char *bp, u_int length)
125			{
126			const struct LAP *lp;
127			const struct atDDP *dp;
128			const struct atShortDDP *sdp;
129			u_short snet;
130
131			if (length < sizeof(*lp)) {
132			(void)printf(" [\|llap %d]", length);
133			return;
134			}
135
136			lp = (struct LAP *)bp;
137			bp += sizeof(*lp);
138			length -= sizeof(*lp);
139			switch (lp->type) {
140
141			case lapShortDDP:
142			if (length < ddpSSize) {
143			(void)printf(" [\|sddp %d]", length);
144			return;
145			}
146			sdp = (const struct atShortDDP *)bp;
147			printf("%s.%s",
148			ataddr_string(0, lp->src), ddpskt_string(sdp->srcSkt));
149			printf(" > %s.%s:",
150			ataddr_string(0, lp->dst), ddpskt_string(sdp->dstSkt));
151			bp += ddpSSize;
152			length -= ddpSSize;
153			ddp_print(bp, length, sdp->type, 0, lp->src, sdp->srcSkt);
154			break;
155
156			case lapDDP:
157			if (length < ddpSize) {
158			(void)printf(" [\|ddp %d]", length);
159			return;
160			}
161			dp = (const struct atDDP *)bp;
162			snet = EXTRACT_16BITS(&dp->srcNet);
163			printf("%s.%s", ataddr_string(snet, dp->srcNode),
164			ddpskt_string(dp->srcSkt));
165			printf(" > %s.%s:",
166			ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
167			ddpskt_string(dp->dstSkt));
168			bp += ddpSize;
169			length -= ddpSize;
170			ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
171			break;
172
173			#ifdef notdef
174			case lapKLAP:
175			klap_print(bp, length);
176			break;
177			#endif
178
179			default:
180			printf("%d > %d at-lap#%d %d",
181			lp->src, lp->dst, lp->type, length);
182			break;
183			}
184			}
185
186			/* XXX should probably pass in the snap header and do checks like arp_print() */
187			void
188			aarp_print(const u_char *bp, u_int length)
189			{
190			const struct aarp *ap;
191
192			#define AT(member) ataddr_string((ap->member[1]<<8)\|ap->member[2],ap->member[3])
193
194			printf("aarp ");
195			ap = (const struct aarp *)bp;
196			if (ntohs(ap->htype) == 1 && ntohs(ap->ptype) == ETHERTYPE_ATALK &&
197			ap->halen == 6 && ap->palen == 4 )
198			switch (ntohs(ap->op)) {
199
200			case 1: /* request */
201			(void)printf("who-has %s tell %s",
202			AT(pdaddr), AT(psaddr));
203			return;
204
205			case 2: /* response */
206			(void)printf("reply %s is-at %s",
207			AT(pdaddr), etheraddr_string(ap->hdaddr));
208			return;
209
210			case 3: /* probe (oy!) */
211			(void)printf("probe %s tell %s",
212			AT(pdaddr), AT(psaddr));
213			return;
214			}
215			(void)printf("len %u op %u htype %u ptype %#x halen %u palen %u",
216			length, ntohs(ap->op), ntohs(ap->htype), ntohs(ap->ptype),
217			ap->halen, ap->palen);
218			}
219
220			static void
221			ddp_print(const u_char *bp, u_int length, int t,
222			u_short snet, u_char snode, u_char skt)
223			{
224
225			if ((intptr_t)bp & (sizeof(long)-1)) {
226			static u_char *abuf = NULL;
227			int clen = snapend - bp;
228			if (clen > snaplen)
229			clen = snaplen;
230
231			if (abuf == NULL) {
232			abuf = malloc(snaplen);
233			if (abuf == NULL)
234			error("ddp_print: malloc");
235			}
236			memmove((char )abuf, (char )bp, min(length, clen));
237			snapend = abuf + clen;
238			packetp = abuf;
239			bp = abuf;
240			}
241
242			switch (t) {
243
244			case ddpNBP:
245			nbp_print((const struct atNBP *)bp, length, snet, snode, skt);
246			break;
247
248			case ddpATP:
249			atp_print((const struct atATP *)bp, length);
250			break;
251
252			default:
253			(void)printf(" at-%s %d", tok2str(type2str, NULL, t), length);
254			break;
255			}
256			}
257
258			static void
259			atp_print(const struct atATP *ap, u_int length)
260			{
261			char c;
262			u_int32_t data;
263
264			if ((const u_char *)(ap + 1) > snapend) {
265			/* Just bail if we don't have the whole chunk. */
266			fputs(tstr, stdout);
267			return;
268			}
269			length -= sizeof(*ap);
270			switch (ap->control & 0xc0) {
271
272			case atpReqCode:
273			(void)printf(" atp-req%s %d",
274			ap->control & atpXO? " " : "*",
275			EXTRACT_16BITS(&ap->transID));
276
277			atp_bitmap_print(ap->bitmap);
278
279			if (length != 0)
280			(void)printf(" [len=%d]", length);
281
282			switch (ap->control & (atpEOM\|atpSTS)) {
283			case atpEOM:
284			(void)printf(" [EOM]");
285			break;
286			case atpSTS:
287			(void)printf(" [STS]");
288			break;
289			case atpEOM\|atpSTS:
290			(void)printf(" [EOM,STS]");
291			break;
292			}
293			break;
294
295			case atpRspCode:
296			(void)printf(" atp-resp%s%d:%d (%d)",
297			ap->control & atpEOM? "*" : " ",
298			EXTRACT_16BITS(&ap->transID), ap->bitmap, length);
299			switch (ap->control & (atpXO\|atpSTS)) {
300			case atpXO:
301			(void)printf(" [XO]");
302			break;
303			case atpSTS:
304			(void)printf(" [STS]");
305			break;
306			case atpXO\|atpSTS:
307			(void)printf(" [XO,STS]");
308			break;
309			}
310			break;
311
312			case atpRelCode:
313			(void)printf(" atp-rel %d", EXTRACT_16BITS(&ap->transID));
314
315			atp_bitmap_print(ap->bitmap);
316
317			/* length should be zero */
318			if (length)
319			(void)printf(" [len=%d]", length);
320
321			/* there shouldn't be any control flags */
322			if (ap->control & (atpXO\|atpEOM\|atpSTS)) {
323			c = '[';
324			if (ap->control & atpXO) {
325			(void)printf("%cXO", c);
326			c = ',';
327			}
328			if (ap->control & atpEOM) {
329			(void)printf("%cEOM", c);
330			c = ',';
331			}
332			if (ap->control & atpSTS) {
333			(void)printf("%cSTS", c);
334			c = ',';
335			}
336			(void)printf("]");
337			}
338			break;
339
340			default:
341			(void)printf(" atp-0x%x %d (%d)", ap->control,
342			EXTRACT_16BITS(&ap->transID), length);
343			break;
344			}
345			data = EXTRACT_32BITS(&ap->userData);
346			if (data != 0)
347			(void)printf(" 0x%x", data);
348			}
349
350			static void
351			atp_bitmap_print(u_char bm)
352			{
353			char c;
354			int i;
355
356			/*
357			* The '& 0xff' below is needed for compilers that want to sign
358			* extend a u_char, which is the case with the Ultrix compiler.
359			* (gcc is smart enough to eliminate it, at least on the Sparc).
360			*/
361			if ((bm + 1) & (bm & 0xff)) {
362			c = '<';
363			for (i = 0; bm; ++i) {
364			if (bm & 1) {
365			(void)printf("%c%d", c, i);
366			c = ',';
367			}
368			bm >>= 1;
369			}
370			(void)printf(">");
371			} else {
372			for (i = 0; bm; ++i)
373			bm >>= 1;
374			if (i > 1)
375			(void)printf("<0-%d>", i - 1);
376			else
377			(void)printf("<0>");
378			}
379			}
380
381			static void
382			nbp_print(const struct atNBP *np, u_int length, u_short snet,
383			u_char snode, u_char skt)
384			{
385			const struct atNBPtuple *tp =
386			(struct atNBPtuple )((u_char )np + nbpHeaderSize);
387			int i;
388			const u_char *ep;
389
390			if (length < nbpHeaderSize) {
391			(void)printf(" truncated-nbp %d", length);
392			return;
393			}
394
395			length -= nbpHeaderSize;
396			if (length < 8) {
397			/* must be room for at least one tuple */
398			if (np->control == nbpNATLKerr) {
399			(void)printf(" nbp-netatalk_err");
400			return;
401			} else if (np->control == nbpNATLKok) {
402			(void)printf(" nbp-netatalk_ok");
403			return;
404			}
405			(void)printf(" truncated-nbp nbp-0x%x %d (%d)",
406			np->control, np->id, length + nbpHeaderSize);
407			return;
408			}
409			/* ep points to end of available data */
410			ep = snapend;
411			if ((const u_char *)tp > ep) {
412			fputs(tstr, stdout);
413			return;
414			}
415			switch (i = np->control & 0xf0) {
416
417			case nbpBrRq:
418			case nbpLkUp:
419			(void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
420			np->id);
421			if ((const u_char *)(tp + 1) > ep) {
422			fputs(tstr, stdout);
423			return;
424			}
425			(void)nbp_name_print(tp, ep);
426			/*
427			* look for anomalies: the spec says there can only
428			* be one tuple, the address must match the source
429			* address and the enumerator should be zero.
430			*/
431			if ((np->control & 0xf) != 1)
432			(void)printf(" [ntup=%d]", np->control & 0xf);
433			if (tp->enumerator)
434			(void)printf(" [enum=%d]", tp->enumerator);
435			if (EXTRACT_16BITS(&tp->net) != snet \|\|
436			tp->node != snode \|\| tp->skt != skt)
437			(void)printf(" [addr=%s.%d]",
438			ataddr_string(EXTRACT_16BITS(&tp->net),
439			tp->node), tp->skt);
440			break;
441
442			case nbpLkUpReply:
443			(void)printf(" nbp-reply %d:", np->id);
444
445			/* print each of the tuples in the reply */
446			for (i = np->control & 0xf; --i >= 0 && tp; )
447			tp = nbp_tuple_print(tp, ep, snet, snode, skt);
448			break;
449
450			case nbpNATLKrgstr:
451			case nbpNATLKunrgstr:
452			(void)printf((i == nbpNATLKrgstr) ?
453			" nbp-netatalk_rgstr %d:" :
454			" nbp-netatalk_unrgstr %d:",
455			np->id);
456			for (i = np->control & 0xf; --i >= 0 && tp; )
457			tp = nbp_tuple_print(tp, ep, snet, snode, skt);
458			break;
459
460			default:
461			(void)printf(" nbp-0x%x %d (%d)", np->control, np->id,
462			length);
463			break;
464			}
465			}
466
467			/* print a counted string */
468			static const char *
469			print_cstring(const char cp, const u_char ep)
470			{
471			u_int length;
472
473			if (cp >= (const char *)ep) {
474			fputs(tstr, stdout);
475			return (0);
476			}
477			length = *cp++;
478
479			/* Spec says string can be at most 32 bytes long */
480			if (length > 32) {
481			(void)printf("[len=%d]", length);
482			return (0);
483			}
484			while ((int)--length >= 0) {
485			if (cp >= (char *)ep) {
486			fputs(tstr, stdout);
487			return (0);
488			}
489			putchar(*cp++);
490			}
491			return (cp);
492			}
493
494			static const struct atNBPtuple *
495			nbp_tuple_print(const struct atNBPtuple *tp,
496			const u_char *ep,
497			u_short snet, u_char snode,
498			u_char skt)
499			{
500			const struct atNBPtuple *tpn;
501
502			if ((const u_char *)(tp + 1) > ep) {
503			fputs(tstr, stdout);
504			return 0;
505			}
506			tpn = nbp_name_print(tp, ep);
507
508			/* if the enumerator isn't 1, print it */
509			if (tp->enumerator != 1)
510			(void)printf("(%d)", tp->enumerator);
511
512			/* if the socket doesn't match the src socket, print it */
513			if (tp->skt != skt)
514			(void)printf(" %d", tp->skt);
515
516			/* if the address doesn't match the src address, it's an anomaly */
517			if (EXTRACT_16BITS(&tp->net) != snet \|\| tp->node != snode)
518			(void)printf(" [addr=%s]",
519			ataddr_string(EXTRACT_16BITS(&tp->net), tp->node));
520
521			return (tpn);
522			}
523
524			static const struct atNBPtuple *
525			nbp_name_print(const struct atNBPtuple tp, const u_char ep)
526			{
527			const char cp = (const char )tp + nbpTupleSize;
528
529			putchar(' ');
530
531			/* Object */
532			putchar('"');
533			if ((cp = print_cstring(cp, ep)) != NULL) {
534			/* Type */
535			putchar(':');
536			if ((cp = print_cstring(cp, ep)) != NULL) {
537			/* Zone */
538			putchar('@');
539			if ((cp = print_cstring(cp, ep)) != NULL)
540			putchar('"');
541			}
542			}
543			return ((const struct atNBPtuple *)cp);
544			}
545
546
547			#define HASHNAMESIZE 4096
548
549			struct hnamemem {
550			int addr;
551			char *name;
552			struct hnamemem *nxt;
553			};
554
555			static struct hnamemem hnametable[HASHNAMESIZE];
556
557			static const char *
558			ataddr_string(u_short atnet, u_char athost)
559			{
560			struct hnamemem tp, tp2;
561			int i = (atnet << 8) \| athost;
562			char nambuf[HOST_NAME_MAX+1 + 20];
563
564			for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
565			if (tp->addr == i)
566			return (tp->name);
567
568			/* didn't have the node name -- see if we've got the net name */
569			i \|= 255;
570			for (tp2 = &hnametable[i & (HASHNAMESIZE-1)]; tp2->nxt; tp2 = tp2->nxt)
571			if (tp2->addr == i) {
572			tp->addr = (atnet << 8) \| athost;
573			tp->nxt = newhnamemem();
574			(void)snprintf(nambuf, sizeof nambuf, "%s.%d",
575			tp2->name, athost);
576			tp->name = savestr(nambuf);
577			return (tp->name);
578			}
579
580			tp->addr = (atnet << 8) \| athost;
581			tp->nxt = newhnamemem();
582			if (athost != 255)
583			(void)snprintf(nambuf, sizeof nambuf, "%d.%d.%d",
584			atnet >> 8, atnet & 0xff, athost);
585			else
586			(void)snprintf(nambuf, sizeof nambuf, "%d.%d",
587			atnet >> 8, atnet & 0xff);
588			tp->name = savestr(nambuf);
589
590			return (tp->name);
591			}
592
593			static struct tok skt2str[] = {
594			{ rtmpSkt, "rtmp" }, /* routing table maintenance */
595			{ nbpSkt, "nis" }, /* name info socket */
596			{ echoSkt, "echo" }, /* AppleTalk echo protocol */
597			{ zipSkt, "zip" }, /* zone info protocol */
598			{ 0, NULL }
599			};
600
601			static const char *
602			ddpskt_string(int skt)
603			{
604			static char buf[12];
605
606			if (nflag) {
607			(void)snprintf(buf, sizeof buf, "%d", skt);
608			return (buf);
609			}
610			return (tok2str(skt2str, "%d", skt));
611			}