Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/print-bootp.c	Lines:	0	177	0.0 %
Date:	2017-11-07	Branches:	0	251	0.0 %


/*	$OpenBSD: print-bootp.c,v 1.22 2015/12/22 21:01:07 mmcc Exp $	*/

/*
 * Copyright (c) 1990, 1991, 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 bootp packets.
 */
#include <sys/time.h>
#include <sys/socket.h>

struct mbuf;
struct rtentry;
#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"
#include "bootp.h"

static void rfc1048_print(const u_char *, u_int);
static void cmu_print(const u_char *, u_int);

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

/*
 * Print bootp requests
 */
void
bootp_print(const u_char *cp, u_int length,
	    u_short sport, u_short dport)
{
	const struct bootp *bp;
	static u_char vm_cmu[4] = VM_CMU;
	static u_char vm_rfc1048[4] = VM_RFC1048;

	bp = (struct bootp *)cp;
	TCHECK(bp->bp_op);
	switch (bp->bp_op) {

	case BOOTREQUEST:
		/* Usually, a request goes from a client to a server */
		if (sport != IPPORT_BOOTPC || dport != IPPORT_BOOTPS)
			printf(" (request)");
		break;

	case BOOTREPLY:
		/* Usually, a reply goes from a server to a client */
		if (sport != IPPORT_BOOTPS || dport != IPPORT_BOOTPC)
			printf(" (reply)");
		break;

	default:
		printf(" bootp-#%d", bp->bp_op);
	}

	TCHECK(bp->bp_flags);

	/* The usual hardware address type is 1 (10Mb Ethernet) */
	if (bp->bp_htype != 1)
		printf(" htype-#%d", bp->bp_htype);

	/* The usual length for 10Mb Ethernet address is 6 bytes */
	if (bp->bp_htype != 1 || bp->bp_hlen != 6)
		printf(" hlen:%d", bp->bp_hlen);

	/* Only print interesting fields */
	if (bp->bp_hops)
		printf(" hops:%d", bp->bp_hops);
	if (bp->bp_xid)
		printf(" xid:0x%x", (u_int32_t)ntohl(bp->bp_xid));
	if (bp->bp_secs)
		printf(" secs:%d", ntohs(bp->bp_secs));
	if (bp->bp_flags)
		printf(" flags:0x%x", ntohs(bp->bp_flags));

	/* Client's ip address */
	TCHECK(bp->bp_ciaddr);
	if (bp->bp_ciaddr.s_addr)
		printf(" C:%s", ipaddr_string(&bp->bp_ciaddr));

	/* 'your' ip address (bootp client) */
	TCHECK(bp->bp_yiaddr);
	if (bp->bp_yiaddr.s_addr)
		printf(" Y:%s", ipaddr_string(&bp->bp_yiaddr));

	/* Server's ip address */
	TCHECK(bp->bp_siaddr);
	if (bp->bp_siaddr.s_addr)
		printf(" S:%s", ipaddr_string(&bp->bp_siaddr));

	/* Gateway's ip address */
	TCHECK(bp->bp_giaddr);
	if (bp->bp_giaddr.s_addr)
		printf(" G:%s", ipaddr_string(&bp->bp_giaddr));

	/* Client's Ethernet address */
	if (bp->bp_htype == 1 && bp->bp_hlen == 6) {
		const struct ether_header *eh;
		const char *e;

		TCHECK2(bp->bp_chaddr[0], 6);
		eh = (struct ether_header *)packetp;
		if (bp->bp_op == BOOTREQUEST)
			e = (const char *)ESRC(eh);
		else if (bp->bp_op == BOOTREPLY)
			e = (const char *)EDST(eh);
		else
			e = NULL;
		if (e == 0 || memcmp((char *)bp->bp_chaddr, e, 6) != 0)
			printf(" ether %s", etheraddr_string(bp->bp_chaddr));
	}

	TCHECK2(bp->bp_sname[0], 1);		/* check first char only */
	if (*bp->bp_sname) {
		printf(" sname \"");
		if (fn_print(bp->bp_sname, snapend)) {
			putchar('"');
			fputs(tstr + 1, stdout);
			return;
		}
		putchar('"');
	}
	TCHECK2(bp->bp_file[0], 1);		/* check first char only */
	if (*bp->bp_file) {
		printf(" file \"");
		if (fn_print(bp->bp_file, snapend)) {
			putchar('"');
			fputs(tstr + 1, stdout);
			return;
		}
		putchar('"');
	}

	/* Decode the vendor buffer */
	TCHECK2(bp->bp_vend[0], sizeof(u_int32_t));
	length -= sizeof(*bp) - sizeof(bp->bp_vend);
	if (memcmp((char *)bp->bp_vend, (char *)vm_rfc1048,
		 sizeof(u_int32_t)) == 0)
		rfc1048_print(bp->bp_vend, length);
	else if (memcmp((char *)bp->bp_vend, (char *)vm_cmu,
		      sizeof(u_int32_t)) == 0)
		cmu_print(bp->bp_vend, length);
	else {
		u_int32_t ul;

		memcpy((char *)&ul, (char *)bp->bp_vend, sizeof(ul));
		if (ul != 0)
			printf("vend-#0x%x", ul);
	}

	return;
trunc:
	fputs(tstr, stdout);
}

/* The first character specifies the format to print */
static struct tok tag2str[] = {
/* RFC1048 tags */
	{ TAG_PAD,		" PAD" },
	{ TAG_SUBNET_MASK,	"iSM" },	/* subnet mask (RFC950) */
	{ TAG_TIME_OFFSET,	"lTZ" },	/* seconds from UTC */
	{ TAG_GATEWAY,		"iDG" },	/* default gateway */
	{ TAG_TIME_SERVER,	"iTS" },	/* time servers (RFC868) */
	{ TAG_NAME_SERVER,	"iIEN" },	/* IEN name servers (IEN116) */
	{ TAG_DOMAIN_SERVER,	"iNS" },	/* domain name (RFC1035) */
	{ TAG_LOG_SERVER,	"iLOG" },	/* MIT log servers */
	{ TAG_COOKIE_SERVER,	"iCS" },	/* cookie servers (RFC865) */
	{ TAG_LPR_SERVER,	"iLPR" },	/* lpr server (RFC1179) */
	{ TAG_IMPRESS_SERVER,	"iIM" },	/* impress servers (Imagen) */
	{ TAG_RLP_SERVER,	"iRL" },	/* resource location (RFC887) */
	{ TAG_HOSTNAME,		"aHN" },	/* ascii hostname */
	{ TAG_BOOTSIZE,		"sBS" },	/* 512 byte blocks */
	{ TAG_END,		" END" },
/* RFC1497 tags */
	{ TAG_DUMPPATH,		"aDP" },
	{ TAG_DOMAINNAME,	"aDN" },
	{ TAG_SWAP_SERVER,	"iSS" },
	{ TAG_ROOTPATH,		"aRP" },
	{ TAG_EXTPATH,		"aEP" },
/* RFC2132 tags */
	{ TAG_IP_FORWARD,	"BIPF" },
	{ TAG_NL_SRCRT,		"BSRT" },
	{ TAG_PFILTERS,		"pPF" },
	{ TAG_REASS_SIZE,	"sRSZ" },
	{ TAG_DEF_TTL,		"bTTL" },
	{ TAG_MTU_TIMEOUT,	"lMA" },
	{ TAG_MTU_TABLE,	"sMT" },
	{ TAG_INT_MTU,		"sMTU" },
	{ TAG_LOCAL_SUBNETS,	"BLSN" },
	{ TAG_BROAD_ADDR,	"iBR" },
	{ TAG_DO_MASK_DISC,	"BMD" },
	{ TAG_SUPPLY_MASK,	"BMS" },
	{ TAG_DO_RDISC,		"BRD" },
	{ TAG_RTR_SOL_ADDR,	"iRSA" },
	{ TAG_STATIC_ROUTE,	"pSR" },
	{ TAG_USE_TRAILERS,	"BUT" },
	{ TAG_ARP_TIMEOUT,	"lAT" },
	{ TAG_ETH_ENCAP,	"BIE" },
	{ TAG_TCP_TTL,		"bTT" },
	{ TAG_TCP_KEEPALIVE,	"lKI" },
	{ TAG_KEEPALIVE_GO,	"BKG" },
	{ TAG_NIS_DOMAIN,	"aYD" },
	{ TAG_NIS_SERVERS,	"iYS" },
	{ TAG_NTP_SERVERS,	"iNTP" },
	{ TAG_VENDOR_OPTS,	"bVO" },
	{ TAG_NETBIOS_NS,	"iWNS" },
	{ TAG_NETBIOS_DDS,	"iWDD" },
	{ TAG_NETBIOS_NODE,	"bWNT" },
	{ TAG_NETBIOS_SCOPE,	"aWSC" },
	{ TAG_XWIN_FS,		"iXFS" },
	{ TAG_XWIN_DM,		"iXDM" },
	{ TAG_NIS_P_DOMAIN,	"sN+D" },
	{ TAG_NIS_P_SERVERS,	"iN+S" },
	{ TAG_MOBILE_HOME,	"iMH" },
	{ TAG_SMPT_SERVER,	"iSMTP" },
	{ TAG_POP3_SERVER,	"iPOP3" },
	{ TAG_NNTP_SERVER,	"iNNTP" },
	{ TAG_WWW_SERVER,	"iWWW" },
	{ TAG_FINGER_SERVER,	"iFG" },
	{ TAG_IRC_SERVER,	"iIRC" },
	{ TAG_STREETTALK_SRVR,	"iSTS" },
	{ TAG_STREETTALK_STDA,	"iSTDA" },
	{ TAG_REQUESTED_IP,	"iRQ" },
	{ TAG_IP_LEASE,		"lLT" },
	{ TAG_OPT_OVERLOAD,	"bOO" },
	{ TAG_TFTP_SERVER,	"aTFTP" },
	{ TAG_BOOTFILENAME,	"aBF" },
	{ TAG_DHCP_MESSAGE,	" DHCP" },
	{ TAG_SERVER_ID,	"iSID" },
	{ TAG_PARM_REQUEST,	"bPR" },
	{ TAG_MESSAGE,		"aMSG" },
	{ TAG_MAX_MSG_SIZE,	"sMSZ" },
	{ TAG_RENEWAL_TIME,	"lRN" },
	{ TAG_REBIND_TIME,	"lRB" },
	{ TAG_VENDOR_CLASS,	"bVC" },
	{ TAG_CLIENT_ID,	"bCID" },
	{ 0,			NULL }
};

static void
rfc1048_print(const u_char *bp, u_int length)
{
	u_char tag;
	u_int len, size;
	const char *cp;
	u_char c;
	int first;
	u_int32_t ul;
	u_short us;

	printf(" vend-rfc1048");

	/* Step over magic cookie */
	bp += sizeof(int32_t);

	/* Loop while we there is a tag left in the buffer */
	while (bp + 1 < snapend) {
		tag = *bp++;
		if (tag == TAG_PAD)
			continue;
		if (tag == TAG_END)
			return;
		cp = tok2str(tag2str, "?T%d", tag);
		c = *cp++;
		printf(" %s:", cp);

		/* Get the length; check for truncation */
		if (bp + 1 >= snapend) {
			fputs(tstr, stdout);
			return;
		}
		len = *bp++;
		if (bp + len >= snapend) {
			fputs(tstr, stdout);
			return;
		}

		if (tag == TAG_DHCP_MESSAGE && len == 1) {
			c = *bp++;
			switch (c) {
			case DHCPDISCOVER:	printf("DISCOVER");	break;
			case DHCPOFFER:		printf("OFFER");	break;
			case DHCPREQUEST:	printf("REQUEST");	break;
			case DHCPDECLINE:	printf("DECLINE");	break;
			case DHCPACK:		printf("ACK");		break;
			case DHCPNAK:		printf("NACK");		break;
			case DHCPRELEASE:	printf("RELEASE");	break;
			case DHCPINFORM:	printf("INFORM");	break;
			default:		printf("%u", c);	break;
			}
			continue;
		}

		if (tag == TAG_PARM_REQUEST) {
			first = 1;
			while (len-- > 0) {
				c = *bp++;
				cp = tok2str(tag2str, "?%d", c);
				if (!first)
					putchar('+');
				printf("%s", cp + 1);
				first = 0;
			}
			continue;
		}

		/* Print data */
		size = len;
		if (c == '?') {
			/* Base default formats for unknown tags on data size */
			if (size & 1)
				c = 'b';
			else if (size & 2)
				c = 's';
			else
				c = 'l';
		}
		first = 1;
		switch (c) {

		case 'a':
			/* ascii strings */
			putchar('"');
			(void)fn_printn(bp, size, NULL);
			putchar('"');
			bp += size;
			size = 0;
			break;

		case 'i':
		case 'l':
			/* ip addresses/32-bit words */
			while (size >= sizeof(ul)) {
				if (!first)
					putchar(',');
				memcpy((char *)&ul, (char *)bp, sizeof(ul));
				if (c == 'i')
					printf("%s", ipaddr_string(&ul));
				else
					printf("%u", ntohl(ul));
				bp += sizeof(ul);
				size -= sizeof(ul);
				first = 0;
			}
			break;

		case 'p':
			/* IP address pairs */
			while (size >= 2*sizeof(ul)) {
				if (!first)
					putchar(',');
				memcpy((char *)&ul, (char *)bp, sizeof(ul));
				printf("(%s:", ipaddr_string(&ul));
				bp += sizeof(ul);
				memcpy((char *)&ul, (char *)bp, sizeof(ul));
				printf("%s)", ipaddr_string(&ul));
				bp += sizeof(ul);
				size -= 2*sizeof(ul);
				first = 0;
			}
			break;

		case 's':
			/* shorts */
			while (size >= sizeof(us)) {
				if (!first)
					putchar(',');
				memcpy((char *)&us, (char *)bp, sizeof(us));
				printf("%u", ntohs(us));
				bp += sizeof(us);
				size -= sizeof(us);
				first = 0;
			}
			break;

		case 'B':
			/* boolean */
			while (size > 0) {
				if (!first)
					putchar(',');
				switch (*bp) {
				case 0:
					putchar('N');
					break;
				case 1:
					putchar('Y');
					break;
				default:
					printf("%d?", *bp);
					break;
				}
				++bp;
				--size;
				first = 0;
			}
			break;

		case 'b':
		default:
			/* Bytes */
			while (size > 0) {
				if (!first)
					putchar('.');
				printf("%d", *bp);
				++bp;
				--size;
				first = 0;
			}
			break;
		}
		/* Data left over? */
		if (size)
			printf("[len %d]", len);
	}
}

static void
cmu_print(const u_char *bp, u_int length)
{
	const struct cmu_vend *cmu;
	static const char fmt[] = " %s:%s";

#define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \
    if (cmu->m.s_addr != 0) \
	printf(fmt, s, ipaddr_string(&cmu->m.s_addr)); }

	printf(" vend-cmu");
	cmu = (struct cmu_vend *)bp;

	/* Only print if there are unknown bits */
	TCHECK(cmu->v_flags);
	if ((cmu->v_flags & ~(VF_SMASK)) != 0)
		printf(" F:0x%x", cmu->v_flags);
	PRINTCMUADDR(v_dgate, "DG");
	PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*");
	PRINTCMUADDR(v_dns1, "NS1");
	PRINTCMUADDR(v_dns2, "NS2");
	PRINTCMUADDR(v_ins1, "IEN1");
	PRINTCMUADDR(v_ins2, "IEN2");
	PRINTCMUADDR(v_ts1, "TS1");
	PRINTCMUADDR(v_ts2, "TS2");
	return;

trunc:
	fputs(tstr, stdout);
#undef PRINTCMUADDR
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-bootp.c,v 1.22 2015/12/22 21:01:07 mmcc Exp $ */
2
3			/*
4			* Copyright (c) 1990, 1991, 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 bootp packets.
24			*/
25			#include <sys/time.h>
26			#include <sys/socket.h>
27
28			struct mbuf;
29			struct rtentry;
30			#include <net/if.h>
31
32			#include <netinet/in.h>
33			#include <netinet/if_ether.h>
34
35			#include <ctype.h>
36			#include <stdio.h>
37			#include <string.h>
38
39			#include "interface.h"
40			#include "addrtoname.h"
41			#include "bootp.h"
42
43			static void rfc1048_print(const u_char *, u_int);
44			static void cmu_print(const u_char *, u_int);
45
46			static char tstr[] = " [\|bootp]";
47
48			/*
49			* Print bootp requests
50			*/
51			void
52			bootp_print(const u_char *cp, u_int length,
53			u_short sport, u_short dport)
54			{
55			const struct bootp *bp;
56			static u_char vm_cmu[4] = VM_CMU;
57			static u_char vm_rfc1048[4] = VM_RFC1048;
58
59			bp = (struct bootp *)cp;
60			TCHECK(bp->bp_op);
61			switch (bp->bp_op) {
62
63			case BOOTREQUEST:
64			/* Usually, a request goes from a client to a server */
65			if (sport != IPPORT_BOOTPC \|\| dport != IPPORT_BOOTPS)
66			printf(" (request)");
67			break;
68
69			case BOOTREPLY:
70			/* Usually, a reply goes from a server to a client */
71			if (sport != IPPORT_BOOTPS \|\| dport != IPPORT_BOOTPC)
72			printf(" (reply)");
73			break;
74
75			default:
76			printf(" bootp-#%d", bp->bp_op);
77			}
78
79			TCHECK(bp->bp_flags);
80
81			/* The usual hardware address type is 1 (10Mb Ethernet) */
82			if (bp->bp_htype != 1)
83			printf(" htype-#%d", bp->bp_htype);
84
85			/* The usual length for 10Mb Ethernet address is 6 bytes */
86			if (bp->bp_htype != 1 \|\| bp->bp_hlen != 6)
87			printf(" hlen:%d", bp->bp_hlen);
88
89			/* Only print interesting fields */
90			if (bp->bp_hops)
91			printf(" hops:%d", bp->bp_hops);
92			if (bp->bp_xid)
93			printf(" xid:0x%x", (u_int32_t)ntohl(bp->bp_xid));
94			if (bp->bp_secs)
95			printf(" secs:%d", ntohs(bp->bp_secs));
96			if (bp->bp_flags)
97			printf(" flags:0x%x", ntohs(bp->bp_flags));
98
99			/* Client's ip address */
100			TCHECK(bp->bp_ciaddr);
101			if (bp->bp_ciaddr.s_addr)
102			printf(" C:%s", ipaddr_string(&bp->bp_ciaddr));
103
104			/* 'your' ip address (bootp client) */
105			TCHECK(bp->bp_yiaddr);
106			if (bp->bp_yiaddr.s_addr)
107			printf(" Y:%s", ipaddr_string(&bp->bp_yiaddr));
108
109			/* Server's ip address */
110			TCHECK(bp->bp_siaddr);
111			if (bp->bp_siaddr.s_addr)
112			printf(" S:%s", ipaddr_string(&bp->bp_siaddr));
113
114			/* Gateway's ip address */
115			TCHECK(bp->bp_giaddr);
116			if (bp->bp_giaddr.s_addr)
117			printf(" G:%s", ipaddr_string(&bp->bp_giaddr));
118
119			/* Client's Ethernet address */
120			if (bp->bp_htype == 1 && bp->bp_hlen == 6) {
121			const struct ether_header *eh;
122			const char *e;
123
124			TCHECK2(bp->bp_chaddr[0], 6);
125			eh = (struct ether_header *)packetp;
126			if (bp->bp_op == BOOTREQUEST)
127			e = (const char *)ESRC(eh);
128			else if (bp->bp_op == BOOTREPLY)
129			e = (const char *)EDST(eh);
130			else
131			e = NULL;
132			if (e == 0 \|\| memcmp((char *)bp->bp_chaddr, e, 6) != 0)
133			printf(" ether %s", etheraddr_string(bp->bp_chaddr));
134			}
135
136			TCHECK2(bp->bp_sname[0], 1); /* check first char only */
137			if (*bp->bp_sname) {
138			printf(" sname \"");
139			if (fn_print(bp->bp_sname, snapend)) {
140			putchar('"');
141			fputs(tstr + 1, stdout);
142			return;
143			}
144			putchar('"');
145			}
146			TCHECK2(bp->bp_file[0], 1); /* check first char only */
147			if (*bp->bp_file) {
148			printf(" file \"");
149			if (fn_print(bp->bp_file, snapend)) {
150			putchar('"');
151			fputs(tstr + 1, stdout);
152			return;
153			}
154			putchar('"');
155			}
156
157			/* Decode the vendor buffer */
158			TCHECK2(bp->bp_vend[0], sizeof(u_int32_t));
159			length -= sizeof(*bp) - sizeof(bp->bp_vend);
160			if (memcmp((char )bp->bp_vend, (char )vm_rfc1048,
161			sizeof(u_int32_t)) == 0)
162			rfc1048_print(bp->bp_vend, length);
163			else if (memcmp((char )bp->bp_vend, (char )vm_cmu,
164			sizeof(u_int32_t)) == 0)
165			cmu_print(bp->bp_vend, length);
166			else {
167			u_int32_t ul;
168
169			memcpy((char )&ul, (char )bp->bp_vend, sizeof(ul));
170			if (ul != 0)
171			printf("vend-#0x%x", ul);
172			}
173
174			return;
175			trunc:
176			fputs(tstr, stdout);
177			}
178
179			/* The first character specifies the format to print */
180			static struct tok tag2str[] = {
181			/* RFC1048 tags */
182			{ TAG_PAD, " PAD" },
183			{ TAG_SUBNET_MASK, "iSM" }, /* subnet mask (RFC950) */
184			{ TAG_TIME_OFFSET, "lTZ" }, /* seconds from UTC */
185			{ TAG_GATEWAY, "iDG" }, /* default gateway */
186			{ TAG_TIME_SERVER, "iTS" }, /* time servers (RFC868) */
187			{ TAG_NAME_SERVER, "iIEN" }, /* IEN name servers (IEN116) */
188			{ TAG_DOMAIN_SERVER, "iNS" }, /* domain name (RFC1035) */
189			{ TAG_LOG_SERVER, "iLOG" }, /* MIT log servers */
190			{ TAG_COOKIE_SERVER, "iCS" }, /* cookie servers (RFC865) */
191			{ TAG_LPR_SERVER, "iLPR" }, /* lpr server (RFC1179) */
192			{ TAG_IMPRESS_SERVER, "iIM" }, /* impress servers (Imagen) */
193			{ TAG_RLP_SERVER, "iRL" }, /* resource location (RFC887) */
194			{ TAG_HOSTNAME, "aHN" }, /* ascii hostname */
195			{ TAG_BOOTSIZE, "sBS" }, /* 512 byte blocks */
196			{ TAG_END, " END" },
197			/* RFC1497 tags */
198			{ TAG_DUMPPATH, "aDP" },
199			{ TAG_DOMAINNAME, "aDN" },
200			{ TAG_SWAP_SERVER, "iSS" },
201			{ TAG_ROOTPATH, "aRP" },
202			{ TAG_EXTPATH, "aEP" },
203			/* RFC2132 tags */
204			{ TAG_IP_FORWARD, "BIPF" },
205			{ TAG_NL_SRCRT, "BSRT" },
206			{ TAG_PFILTERS, "pPF" },
207			{ TAG_REASS_SIZE, "sRSZ" },
208			{ TAG_DEF_TTL, "bTTL" },
209			{ TAG_MTU_TIMEOUT, "lMA" },
210			{ TAG_MTU_TABLE, "sMT" },
211			{ TAG_INT_MTU, "sMTU" },
212			{ TAG_LOCAL_SUBNETS, "BLSN" },
213			{ TAG_BROAD_ADDR, "iBR" },
214			{ TAG_DO_MASK_DISC, "BMD" },
215			{ TAG_SUPPLY_MASK, "BMS" },
216			{ TAG_DO_RDISC, "BRD" },
217			{ TAG_RTR_SOL_ADDR, "iRSA" },
218			{ TAG_STATIC_ROUTE, "pSR" },
219			{ TAG_USE_TRAILERS, "BUT" },
220			{ TAG_ARP_TIMEOUT, "lAT" },
221			{ TAG_ETH_ENCAP, "BIE" },
222			{ TAG_TCP_TTL, "bTT" },
223			{ TAG_TCP_KEEPALIVE, "lKI" },
224			{ TAG_KEEPALIVE_GO, "BKG" },
225			{ TAG_NIS_DOMAIN, "aYD" },
226			{ TAG_NIS_SERVERS, "iYS" },
227			{ TAG_NTP_SERVERS, "iNTP" },
228			{ TAG_VENDOR_OPTS, "bVO" },
229			{ TAG_NETBIOS_NS, "iWNS" },
230			{ TAG_NETBIOS_DDS, "iWDD" },
231			{ TAG_NETBIOS_NODE, "bWNT" },
232			{ TAG_NETBIOS_SCOPE, "aWSC" },
233			{ TAG_XWIN_FS, "iXFS" },
234			{ TAG_XWIN_DM, "iXDM" },
235			{ TAG_NIS_P_DOMAIN, "sN+D" },
236			{ TAG_NIS_P_SERVERS, "iN+S" },
237			{ TAG_MOBILE_HOME, "iMH" },
238			{ TAG_SMPT_SERVER, "iSMTP" },
239			{ TAG_POP3_SERVER, "iPOP3" },
240			{ TAG_NNTP_SERVER, "iNNTP" },
241			{ TAG_WWW_SERVER, "iWWW" },
242			{ TAG_FINGER_SERVER, "iFG" },
243			{ TAG_IRC_SERVER, "iIRC" },
244			{ TAG_STREETTALK_SRVR, "iSTS" },
245			{ TAG_STREETTALK_STDA, "iSTDA" },
246			{ TAG_REQUESTED_IP, "iRQ" },
247			{ TAG_IP_LEASE, "lLT" },
248			{ TAG_OPT_OVERLOAD, "bOO" },
249			{ TAG_TFTP_SERVER, "aTFTP" },
250			{ TAG_BOOTFILENAME, "aBF" },
251			{ TAG_DHCP_MESSAGE, " DHCP" },
252			{ TAG_SERVER_ID, "iSID" },
253			{ TAG_PARM_REQUEST, "bPR" },
254			{ TAG_MESSAGE, "aMSG" },
255			{ TAG_MAX_MSG_SIZE, "sMSZ" },
256			{ TAG_RENEWAL_TIME, "lRN" },
257			{ TAG_REBIND_TIME, "lRB" },
258			{ TAG_VENDOR_CLASS, "bVC" },
259			{ TAG_CLIENT_ID, "bCID" },
260			{ 0, NULL }
261			};
262
263			static void
264			rfc1048_print(const u_char *bp, u_int length)
265			{
266			u_char tag;
267			u_int len, size;
268			const char *cp;
269			u_char c;
270			int first;
271			u_int32_t ul;
272			u_short us;
273
274			printf(" vend-rfc1048");
275
276			/* Step over magic cookie */
277			bp += sizeof(int32_t);
278
279			/* Loop while we there is a tag left in the buffer */
280			while (bp + 1 < snapend) {
281			tag = *bp++;
282			if (tag == TAG_PAD)
283			continue;
284			if (tag == TAG_END)
285			return;
286			cp = tok2str(tag2str, "?T%d", tag);
287			c = *cp++;
288			printf(" %s:", cp);
289
290			/* Get the length; check for truncation */
291			if (bp + 1 >= snapend) {
292			fputs(tstr, stdout);
293			return;
294			}
295			len = *bp++;
296			if (bp + len >= snapend) {
297			fputs(tstr, stdout);
298			return;
299			}
300
301			if (tag == TAG_DHCP_MESSAGE && len == 1) {
302			c = *bp++;
303			switch (c) {
304			case DHCPDISCOVER: printf("DISCOVER"); break;
305			case DHCPOFFER: printf("OFFER"); break;
306			case DHCPREQUEST: printf("REQUEST"); break;
307			case DHCPDECLINE: printf("DECLINE"); break;
308			case DHCPACK: printf("ACK"); break;
309			case DHCPNAK: printf("NACK"); break;
310			case DHCPRELEASE: printf("RELEASE"); break;
311			case DHCPINFORM: printf("INFORM"); break;
312			default: printf("%u", c); break;
313			}
314			continue;
315			}
316
317			if (tag == TAG_PARM_REQUEST) {
318			first = 1;
319			while (len-- > 0) {
320			c = *bp++;
321			cp = tok2str(tag2str, "?%d", c);
322			if (!first)
323			putchar('+');
324			printf("%s", cp + 1);
325			first = 0;
326			}
327			continue;
328			}
329
330			/* Print data */
331			size = len;
332			if (c == '?') {
333			/* Base default formats for unknown tags on data size */
334			if (size & 1)
335			c = 'b';
336			else if (size & 2)
337			c = 's';
338			else
339			c = 'l';
340			}
341			first = 1;
342			switch (c) {
343
344			case 'a':
345			/* ascii strings */
346			putchar('"');
347			(void)fn_printn(bp, size, NULL);
348			putchar('"');
349			bp += size;
350			size = 0;
351			break;
352
353			case 'i':
354			case 'l':
355			/* ip addresses/32-bit words */
356			while (size >= sizeof(ul)) {
357			if (!first)
358			putchar(',');
359			memcpy((char )&ul, (char )bp, sizeof(ul));
360			if (c == 'i')
361			printf("%s", ipaddr_string(&ul));
362			else
363			printf("%u", ntohl(ul));
364			bp += sizeof(ul);
365			size -= sizeof(ul);
366			first = 0;
367			}
368			break;
369
370			case 'p':
371			/* IP address pairs */
372			while (size >= 2*sizeof(ul)) {
373			if (!first)
374			putchar(',');
375			memcpy((char )&ul, (char )bp, sizeof(ul));
376			printf("(%s:", ipaddr_string(&ul));
377			bp += sizeof(ul);
378			memcpy((char )&ul, (char )bp, sizeof(ul));
379			printf("%s)", ipaddr_string(&ul));
380			bp += sizeof(ul);
381			size -= 2*sizeof(ul);
382			first = 0;
383			}
384			break;
385
386			case 's':
387			/* shorts */
388			while (size >= sizeof(us)) {
389			if (!first)
390			putchar(',');
391			memcpy((char )&us, (char )bp, sizeof(us));
392			printf("%u", ntohs(us));
393			bp += sizeof(us);
394			size -= sizeof(us);
395			first = 0;
396			}
397			break;
398
399			case 'B':
400			/* boolean */
401			while (size > 0) {
402			if (!first)
403			putchar(',');
404			switch (*bp) {
405			case 0:
406			putchar('N');
407			break;
408			case 1:
409			putchar('Y');
410			break;
411			default:
412			printf("%d?", *bp);
413			break;
414			}
415			++bp;
416			--size;
417			first = 0;
418			}
419			break;
420
421			case 'b':
422			default:
423			/* Bytes */
424			while (size > 0) {
425			if (!first)
426			putchar('.');
427			printf("%d", *bp);
428			++bp;
429			--size;
430			first = 0;
431			}
432			break;
433			}
434			/* Data left over? */
435			if (size)
436			printf("[len %d]", len);
437			}
438			}
439
440			static void
441			cmu_print(const u_char *bp, u_int length)
442			{
443			const struct cmu_vend *cmu;
444			static const char fmt[] = " %s:%s";
445
446			#define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \
447			if (cmu->m.s_addr != 0) \
448			printf(fmt, s, ipaddr_string(&cmu->m.s_addr)); }
449
450			printf(" vend-cmu");
451			cmu = (struct cmu_vend *)bp;
452
453			/* Only print if there are unknown bits */
454			TCHECK(cmu->v_flags);
455			if ((cmu->v_flags & ~(VF_SMASK)) != 0)
456			printf(" F:0x%x", cmu->v_flags);
457			PRINTCMUADDR(v_dgate, "DG");
458			PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*");
459			PRINTCMUADDR(v_dns1, "NS1");
460			PRINTCMUADDR(v_dns2, "NS2");
461			PRINTCMUADDR(v_ins1, "IEN1");
462			PRINTCMUADDR(v_ins2, "IEN2");
463			PRINTCMUADDR(v_ts1, "TS1");
464			PRINTCMUADDR(v_ts2, "TS2");
465			return;
466
467			trunc:
468			fputs(tstr, stdout);
469			#undef PRINTCMUADDR
470			}