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📄 CHANGES(57.87 KB)
📄 CONTRIBUTING(5.93 KB)
📄 CREDITS(14.57 KB)
📄 INSTALL.txt(5.25 KB)
📄 LICENSE(873 B)
📄 Makefile-devel-adds(614 B)
📄 Makefile.in(9.96 KB)
📄 PLATFORMS(567 B)
📄 README(9.04 KB)
📄 README.md(9.04 KB)
📄 VERSION(6 B)
📄 addrtoname.c(33.19 KB)
📄 addrtoname.h(2.78 KB)
📄 addrtostr.c(5.64 KB)
📄 addrtostr.h(2.03 KB)
📄 af.c(1.96 KB)
📄 af.h(1.81 KB)
📄 ah.h(2.34 KB)
📄 appletalk.h(4.06 KB)
📄 ascii_strcasecmp.c(3.5 KB)
📄 ascii_strcasecmp.h(1.49 KB)
📄 atime.awk(529 B)
📄 atm.h(1.14 KB)
📄 bpf_dump.c(1.9 KB)
📄 chdlc.h(1.31 KB)
📄 checksum.c(5.25 KB)
📄 config.guess(43.17 KB)
📄 config.h.in(11.19 KB)
📄 config.sub(34.93 KB)
📄 configure(255.88 KB)
📄 configure.ac(25.05 KB)
📄 configure.in(25.66 KB)
📄 cpack.c(3.92 KB)
📄 cpack.h(2.37 KB)
📄 ether.h(2.34 KB)
📄 ethertype.h(5.58 KB)
📄 extract.h(11.48 KB)
📄 funcattrs.h(4.42 KB)
📄 getopt_long.h(2.52 KB)
📄 gmpls.c(5.82 KB)
📄 gmpls.h(1.38 KB)
📄 gmt2local.c(2.01 KB)
📄 gmt2local.h(1.21 KB)
📄 in_cksum.c(6.44 KB)
📄 install-sh(5.45 KB)
📄 interface.h(2.29 KB)
📄 ip.h(5.75 KB)
📄 ip6.h(7.6 KB)
📄 ipproto.c(16.49 KB)
📄 ipproto.h(4.72 KB)
📄 l2vpn.c(3.36 KB)
📄 l2vpn.h(781 B)
📁 lbl
📄 llc.h(3.72 KB)
📄 machdep.c(2.58 KB)
📄 machdep.h(1.24 KB)
📄 makemib(6.41 KB)
📄 mib.h(26.33 KB)
📁 missing
📄 mkdep(2.43 KB)
📄 mpls.h(1.93 KB)
📄 nameser.h(10.8 KB)
📄 netdissect-stdinc.h(9.93 KB)
📄 netdissect.c(3.38 KB)
📄 netdissect.h(30.13 KB)
📄 nfs.h(13.37 KB)
📄 nfsfh.h(2.57 KB)
📄 nlpid.c(1.27 KB)
📄 nlpid.h(1.3 KB)
📄 openflow.h(2.14 KB)
📄 ospf.h(10.21 KB)
📄 oui.c(3.83 KB)
📄 oui.h(4.06 KB)
📄 packetdat.awk(1.39 KB)
📄 parsenfsfh.c(12.87 KB)
📄 pcap-missing.h(1.8 KB)
📄 pcap_dump_ftell.c(1.29 KB)
📄 ppp.h(3.07 KB)
📄 print-802_11.c(91.47 KB)
📄 print-802_15_4.c(5.5 KB)
📄 print-ah.c(2.02 KB)
📄 print-ahcp.c(10.73 KB)
📄 print-aodv.c(15.98 KB)
📄 print-aoe.c(11.13 KB)
📄 print-ap1394.c(4 KB)
📄 print-arcnet.c(8.83 KB)
📄 print-arp.c(14.57 KB)
📄 print-ascii.c(6.23 KB)
📄 print-atalk.c(16.76 KB)
📄 print-atm.c(16.81 KB)
📄 print-babel.c(23.79 KB)
📄 print-beep.c(1.71 KB)
📄 print-bfd.c(16.5 KB)
📄 print-bgp.c(99.77 KB)
📄 print-bootp.c(30.07 KB)
📄 print-bt.c(2.21 KB)
📄 print-calm-fast.c(1.81 KB)
📄 print-carp.c(2.43 KB)
📄 print-cdp.c(11.16 KB)
📄 print-cfm.c(24.19 KB)
📄 print-chdlc.c(5.88 KB)
📄 print-cip.c(2.5 KB)
📄 print-cnfp.c(13.69 KB)
📄 print-dccp.c(17.75 KB)
📄 print-decnet.c(37.63 KB)
📄 print-dhcp6.c(23.22 KB)
📄 print-domain.c(18.44 KB)
📄 print-dtp.c(3.03 KB)
📄 print-dvmrp.c(8.98 KB)
📄 print-eap.c(9.26 KB)
📄 print-egp.c(8.69 KB)
📄 print-eigrp.c(19.49 KB)
📄 print-enc.c(4.2 KB)
📄 print-esp.c(21.46 KB)
📄 print-ether.c(12.91 KB)
📄 print-fddi.c(10.51 KB)
📄 print-forces.c(45.01 KB)
📄 print-fr.c(31.99 KB)
📄 print-frag6.c(2.36 KB)
📄 print-ftp.c(973 B)
📄 print-geneve.c(6.13 KB)
📄 print-geonet.c(6.72 KB)
📄 print-gre.c(9.72 KB)
📄 print-hncp.c(26.39 KB)
📄 print-hsrp.c(4.57 KB)
📄 print-http.c(1.51 KB)
📄 print-icmp.c(22.7 KB)
📄 print-icmp6.c(59.81 KB)
📄 print-igmp.c(10.05 KB)
📄 print-igrp.c(4.64 KB)
📄 print-ip.c(17.04 KB)
📄 print-ip6.c(10.57 KB)
📄 print-ip6opts.c(5.53 KB)
📄 print-ipcomp.c(2.32 KB)
📄 print-ipfc.c(4.41 KB)
📄 print-ipnet.c(2.78 KB)
📄 print-ipx.c(6.42 KB)
📄 print-isakmp.c(81.72 KB)
📄 print-isoclns.c(107.61 KB)
📄 print-juniper.c(48.42 KB)
📄 print-krb.c(6.26 KB)
📄 print-l2tp.c(23.94 KB)
📄 print-lane.c(3.04 KB)
📄 print-ldp.c(24.35 KB)
📄 print-lisp.c(15.23 KB)
📄 print-llc.c(16.68 KB)
📄 print-lldp.c(57.26 KB)
📄 print-lmp.c(38.11 KB)
📄 print-loopback.c(3.63 KB)
📄 print-lspping.c(51.64 KB)
📄 print-lwapp.c(13.01 KB)
📄 print-lwres.c(14.08 KB)
📄 print-m3ua.c(10.92 KB)
📄 print-medsa.c(5.57 KB)
📄 print-mobile.c(3.28 KB)
📄 print-mobility.c(9.74 KB)
📄 print-mpcp.c(7.87 KB)
📄 print-mpls.c(5.31 KB)
📄 print-mptcp.c(13.68 KB)
📄 print-msdp.c(2.69 KB)
📄 print-msnlb.c(2.39 KB)
📄 print-nflog.c(4.4 KB)
📄 print-nfs.c(42.84 KB)
📄 print-nsh.c(5.39 KB)
📄 print-ntp.c(13.34 KB)
📄 print-null.c(4.01 KB)
📄 print-olsr.c(23.42 KB)
📄 print-openflow-1.0.c(76.63 KB)
📄 print-openflow.c(4.77 KB)
📄 print-ospf.c(39.49 KB)
📄 print-ospf6.c(29.86 KB)
📄 print-otv.c(2.1 KB)
📄 print-pflog.c(4.86 KB)
📄 print-pfsync.c(12.53 KB)
📄 print-pgm.c(22.17 KB)
📄 print-pim.c(32.59 KB)
📄 print-pktap.c(5.18 KB)
📄 print-ppi.c(2.68 KB)
📄 print-ppp.c(46.16 KB)
📄 print-pppoe.c(5.65 KB)
📄 print-pptp.c(25.9 KB)
📄 print-radius.c(35.1 KB)
📄 print-raw.c(1.52 KB)
📄 print-resp.c(16.5 KB)
📄 print-rip.c(9.19 KB)
📄 print-ripng.c(6 KB)
📄 print-rpki-rtr.c(10.83 KB)
📄 print-rrcp.c(4.56 KB)
📄 print-rsvp.c(78.61 KB)
📄 print-rt6.c(2.66 KB)
📄 print-rtsp.c(1.16 KB)
📄 print-rx.c(66.92 KB)
📄 print-sctp.c(23.13 KB)
📄 print-sflow.c(31.91 KB)
📄 print-sip.c(1.29 KB)
📄 print-sl.c(6.95 KB)
📄 print-sll.c(9.2 KB)
📄 print-slow.c(25.17 KB)
📄 print-smb.c(43.19 KB)
📄 print-smtp.c(983 B)
📄 print-snmp.c(43.17 KB)
📄 print-stp.c(17.18 KB)
📄 print-sunatm.c(3.27 KB)
📄 print-sunrpc.c(7.85 KB)
📄 print-symantec.c(3.78 KB)
📄 print-syslog.c(3.96 KB)
📄 print-tcp.c(35.84 KB)
📄 print-telnet.c(15.02 KB)
📄 print-tftp.c(5.2 KB)
📄 print-timed.c(4.74 KB)
📄 print-tipc.c(11.53 KB)
📄 print-token.c(7.96 KB)
📄 print-udld.c(5.47 KB)
📄 print-udp.c(21.28 KB)
📄 print-usb.c(4.18 KB)
📄 print-vjc.c(4.45 KB)
📄 print-vqp.c(6.8 KB)
📄 print-vrrp.c(6.37 KB)
📄 print-vtp.c(13.56 KB)
📄 print-vxlan-gpe.c(3.46 KB)
📄 print-vxlan.c(2.21 KB)
📄 print-wb.c(10.93 KB)
📄 print-zephyr.c(8.03 KB)
📄 print-zeromq.c(7.5 KB)
📄 print.c(11.54 KB)
📄 print.h(1.78 KB)
📄 rpc_auth.h(2.77 KB)
📄 rpc_msg.h(3.19 KB)
📄 rpl.h(4.88 KB)
📄 send-ack.awk(1.56 KB)
📄 setsignal.c(3.27 KB)
📄 setsignal.h(1.24 KB)
📄 signature.c(5.58 KB)
📄 signature.h(1.12 KB)
📄 slcompress.h(3.55 KB)
📄 smb.h(5.38 KB)
📄 smbutil.c(63.88 KB)
📄 stime.awk(567 B)
📄 strtoaddr.c(5.34 KB)
📄 strtoaddr.h(992 B)
📄 tcp.h(5.02 KB)
📄 tcpdump.1.in(60.82 KB)
📄 tcpdump.c(69.76 KB)
📄 timeval-operations.h(3.19 KB)
📄 udp.h(8.25 KB)
📄 util-print.c(23.75 KB)
📄 vfprintf.c(1.62 KB)

Editing: print-egp.c

/*
 * Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Lawrence Berkeley Laboratory,
 * Berkeley, CA.  The name of the University may not 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.
 *
 * Initial contribution from Jeff Honig (jch@MITCHELL.CIT.CORNELL.EDU).
 */

/* \summary: Exterior Gateway Protocol (EGP) printer */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <netdissect-stdinc.h>

#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"

struct egp_packet {
	uint8_t  egp_version;
#define	EGP_VERSION	2
	uint8_t  egp_type;
#define  EGPT_ACQUIRE	3
#define  EGPT_REACH	5
#define  EGPT_POLL	2
#define  EGPT_UPDATE	1
#define  EGPT_ERROR	8
	uint8_t  egp_code;
#define  EGPC_REQUEST	0
#define  EGPC_CONFIRM	1
#define  EGPC_REFUSE	2
#define  EGPC_CEASE	3
#define  EGPC_CEASEACK	4
#define  EGPC_HELLO	0
#define  EGPC_HEARDU	1
	uint8_t  egp_status;
#define  EGPS_UNSPEC	0
#define  EGPS_ACTIVE	1
#define  EGPS_PASSIVE	2
#define  EGPS_NORES	3
#define  EGPS_ADMIN	4
#define  EGPS_GODOWN	5
#define  EGPS_PARAM	6
#define  EGPS_PROTO	7
#define  EGPS_INDET	0
#define  EGPS_UP	1
#define  EGPS_DOWN	2
#define  EGPS_UNSOL	0x80
	uint16_t  egp_checksum;
	uint16_t  egp_as;
	uint16_t  egp_sequence;
	union {
		uint16_t  egpu_hello;
		uint8_t egpu_gws[2];
		uint16_t  egpu_reason;
#define  EGPR_UNSPEC	0
#define  EGPR_BADHEAD	1
#define  EGPR_BADDATA	2
#define  EGPR_NOREACH	3
#define  EGPR_XSPOLL	4
#define  EGPR_NORESP	5
#define  EGPR_UVERSION	6
	} egp_handg;
#define  egp_hello  egp_handg.egpu_hello
#define  egp_intgw  egp_handg.egpu_gws[0]
#define  egp_extgw  egp_handg.egpu_gws[1]
#define  egp_reason  egp_handg.egpu_reason
	union {
		uint16_t  egpu_poll;
		uint32_t egpu_sourcenet;
	} egp_pands;
#define  egp_poll  egp_pands.egpu_poll
#define  egp_sourcenet  egp_pands.egpu_sourcenet
};

static const char *egp_acquire_codes[] = {
	"request",
	"confirm",
	"refuse",
	"cease",
	"cease_ack"
};

static const char *egp_acquire_status[] = {
	"unspecified",
	"active_mode",
	"passive_mode",
	"insufficient_resources",
	"administratively_prohibited",
	"going_down",
	"parameter_violation",
	"protocol_violation"
};

static const char *egp_reach_codes[] = {
	"hello",
	"i-h-u"
};

static const char *egp_status_updown[] = {
	"indeterminate",
	"up",
	"down"
};

static const char *egp_reasons[] = {
	"unspecified",
	"bad_EGP_header_format",
	"bad_EGP_data_field_format",
	"reachability_info_unavailable",
	"excessive_polling_rate",
	"no_response",
	"unsupported_version"
};

static void
egpnrprint(netdissect_options *ndo,
           register const struct egp_packet *egp, u_int length)
{
	register const uint8_t *cp;
	uint32_t addr;
	register uint32_t net;
	register u_int netlen;
	int gateways, distances, networks;
	int t_gateways;
	const char *comma;

addr = egp->egp_sourcenet;
	if (IN_CLASSA(addr)) {
		net = addr & IN_CLASSA_NET;
		netlen = 1;
	} else if (IN_CLASSB(addr)) {
		net = addr & IN_CLASSB_NET;
		netlen = 2;
	} else if (IN_CLASSC(addr)) {
		net = addr & IN_CLASSC_NET;
		netlen = 3;
	} else {
		net = 0;
		netlen = 0;
	}
	cp = (const uint8_t *)(egp + 1);
	length -= sizeof(*egp);

t_gateways = egp->egp_intgw + egp->egp_extgw;
	for (gateways = 0; gateways < t_gateways; ++gateways) {
		/* Pickup host part of gateway address */
		addr = 0;
		if (length < 4 - netlen)
			goto trunc;
		ND_TCHECK2(cp[0], 4 - netlen);
		switch (netlen) {

case 1:
			addr = *cp++;
			/* fall through */
		case 2:
			addr = (addr << 8) | *cp++;
			/* fall through */
		case 3:
			addr = (addr << 8) | *cp++;
		}
		addr |= net;
		length -= 4 - netlen;
		if (length < 1)
			goto trunc;
		ND_TCHECK2(cp[0], 1);
		distances = *cp++;
		length--;
		ND_PRINT((ndo, " %s %s ",
		       gateways < (int)egp->egp_intgw ? "int" : "ext",
		       ipaddr_string(ndo, &addr)));

comma = "";
		ND_PRINT((ndo, "("));
		while (--distances >= 0) {
			if (length < 2)
				goto trunc;
			ND_TCHECK2(cp[0], 2);
			ND_PRINT((ndo, "%sd%d:", comma, (int)*cp++));
			comma = ", ";
			networks = *cp++;
			length -= 2;
			while (--networks >= 0) {
				/* Pickup network number */
				if (length < 1)
					goto trunc;
				ND_TCHECK2(cp[0], 1);
				addr = (uint32_t)*cp++ << 24;
				length--;
				if (IN_CLASSB(addr)) {
					if (length < 1)
						goto trunc;
					ND_TCHECK2(cp[0], 1);
					addr |= (uint32_t)*cp++ << 16;
					length--;
				} else if (!IN_CLASSA(addr)) {
					if (length < 2)
						goto trunc;
					ND_TCHECK2(cp[0], 2);
					addr |= (uint32_t)*cp++ << 16;
					addr |= (uint32_t)*cp++ << 8;
					length -= 2;
				}
				ND_PRINT((ndo, " %s", ipaddr_string(ndo, &addr)));
			}
		}
		ND_PRINT((ndo, ")"));
	}
	return;
trunc:
	ND_PRINT((ndo, "[|]"));
}

void
egp_print(netdissect_options *ndo,
          register const uint8_t *bp, register u_int length)
{
	register const struct egp_packet *egp;
	register int status;
	register int code;
	register int type;

egp = (const struct egp_packet *)bp;
	if (length < sizeof(*egp) || !ND_TTEST(*egp)) {
		ND_PRINT((ndo, "[|egp]"));
		return;
	}

if (!ndo->ndo_vflag) {
            ND_PRINT((ndo, "EGPv%u, AS %u, seq %u, length %u",
                   egp->egp_version,
                   EXTRACT_16BITS(&egp->egp_as),
                   EXTRACT_16BITS(&egp->egp_sequence),
                   length));
            return;
        } else
            ND_PRINT((ndo, "EGPv%u, length %u",
                   egp->egp_version,
                   length));

if (egp->egp_version != EGP_VERSION) {
		ND_PRINT((ndo, "[version %d]", egp->egp_version));
		return;
	}

type = egp->egp_type;
	code = egp->egp_code;
	status = egp->egp_status;

switch (type) {
	case EGPT_ACQUIRE:
		ND_PRINT((ndo, " acquire"));
		switch (code) {
		case EGPC_REQUEST:
		case EGPC_CONFIRM:
			ND_PRINT((ndo, " %s", egp_acquire_codes[code]));
			switch (status) {
			case EGPS_UNSPEC:
			case EGPS_ACTIVE:
			case EGPS_PASSIVE:
				ND_PRINT((ndo, " %s", egp_acquire_status[status]));
				break;

default:
				ND_PRINT((ndo, " [status %d]", status));
				break;
			}
			ND_PRINT((ndo, " hello:%d poll:%d",
			       EXTRACT_16BITS(&egp->egp_hello),
			       EXTRACT_16BITS(&egp->egp_poll)));
			break;

case EGPC_REFUSE:
		case EGPC_CEASE:
		case EGPC_CEASEACK:
			ND_PRINT((ndo, " %s", egp_acquire_codes[code]));
			switch (status ) {
			case EGPS_UNSPEC:
			case EGPS_NORES:
			case EGPS_ADMIN:
			case EGPS_GODOWN:
			case EGPS_PARAM:
			case EGPS_PROTO:
				ND_PRINT((ndo, " %s", egp_acquire_status[status]));
				break;

default:
				ND_PRINT((ndo, "[status %d]", status));
				break;
			}
			break;

default:
			ND_PRINT((ndo, "[code %d]", code));
			break;
		}
		break;

case EGPT_REACH:
		switch (code) {

case EGPC_HELLO:
		case EGPC_HEARDU:
			ND_PRINT((ndo, " %s", egp_reach_codes[code]));
			if (status <= EGPS_DOWN)
				ND_PRINT((ndo, " state:%s", egp_status_updown[status]));
			else
				ND_PRINT((ndo, " [status %d]", status));
			break;

default:
			ND_PRINT((ndo, "[reach code %d]", code));
			break;
		}
		break;

case EGPT_POLL:
		ND_PRINT((ndo, " poll"));
		if (egp->egp_status <= EGPS_DOWN)
			ND_PRINT((ndo, " state:%s", egp_status_updown[status]));
		else
			ND_PRINT((ndo, " [status %d]", status));
		ND_PRINT((ndo, " net:%s", ipaddr_string(ndo, &egp->egp_sourcenet)));
		break;

case EGPT_UPDATE:
		ND_PRINT((ndo, " update"));
		if (status & EGPS_UNSOL) {
			status &= ~EGPS_UNSOL;
			ND_PRINT((ndo, " unsolicited"));
		}
		if (status <= EGPS_DOWN)
			ND_PRINT((ndo, " state:%s", egp_status_updown[status]));
		else
			ND_PRINT((ndo, " [status %d]", status));
		ND_PRINT((ndo, " %s int %d ext %d",
		       ipaddr_string(ndo, &egp->egp_sourcenet),
		       egp->egp_intgw,
		       egp->egp_extgw));
		if (ndo->ndo_vflag)
			egpnrprint(ndo, egp, length);
		break;

case EGPT_ERROR:
		ND_PRINT((ndo, " error"));
		if (status <= EGPS_DOWN)
			ND_PRINT((ndo, " state:%s", egp_status_updown[status]));
		else
			ND_PRINT((ndo, " [status %d]", status));

if (EXTRACT_16BITS(&egp->egp_reason) <= EGPR_UVERSION)
			ND_PRINT((ndo, " %s", egp_reasons[EXTRACT_16BITS(&egp->egp_reason)]));
		else
			ND_PRINT((ndo, " [reason %d]", EXTRACT_16BITS(&egp->egp_reason)));
		break;

default:
		ND_PRINT((ndo, "[type %d]", type));
		break;
	}
}

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