File Manager

003 File Manager

Current Path: /usr/src/contrib/tcpdump

📁 ..
📄 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-lisp.c

/*
 * Copyright (c) 2015 Ritesh Ranjan (r.ranjan789@gmail.com)
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/* \summary: - Locator/Identifier Separation Protocol (LISP) printer */

/*
 * specification: RFC 6830
 *
 *
 * The Map-Register message format is:
 *
 *       0                   1                   2                   3
 *       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |Type=3 |P|S|I|R|      Reserved               |M| Record Count  |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |                         Nonce . . .                           |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |                         . . . Nonce                           |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |            Key ID             |  Authentication Data Length   |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      ~                     Authentication Data                       ~
 *  +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |   |                          Record TTL                           |
 *  |   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  R   | Locator Count | EID mask-len  | ACT |A|      Reserved         |
 *  e   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  c   | Rsvd  |  Map-Version Number   |        EID-Prefix-AFI         |
 *  o   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  r   |                          EID-Prefix                           |
 *  d   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |  /|    Priority   |    Weight     |  M Priority   |   M Weight    |
 *  | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  | o |        Unused Flags     |L|p|R|           Loc-AFI             |
 *  | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |  \|                             Locator                           |
 *  +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 *
 * The Map-Notify message format is:
 *
 *       0                   1                   2                   3
 *       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |Type=4 |I|R|          Reserved                 | Record Count  |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |                         Nonce . . .                           |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |                         . . . Nonce                           |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      |            Key ID             |  Authentication Data Length   |
 *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *      ~                     Authentication Data                       ~
 *  +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |   |                          Record TTL                           |
 *  |   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  R   | Locator Count | EID mask-len  | ACT |A|      Reserved         |
 *  e   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  c   | Rsvd  |  Map-Version Number   |         EID-Prefix-AFI        |
 *  o   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  r   |                          EID-Prefix                           |
 *  d   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |  /|    Priority   |    Weight     |  M Priority   |   M Weight    |
 *  | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  | o |        Unused Flags     |L|p|R|           Loc-AFI             |
 *  | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |  \|                             Locator                           |
 *  +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 */

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

#include <netdissect-stdinc.h>
#include <netdissect.h>
#include <string.h>
#include <stdlib.h>

#include "ip.h"
#include "ip6.h"

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

static const char tstr[] = " [|LISP]";

#define IPv4_AFI			1
#define IPv6_AFI			2
#define TYPE_INDEX			4
#define LISP_MAP_NOTIFY_IBIT_MASK	8
#define LISP_MAP_REGISTER_IBIT_MASK	2

enum {
	LISP_MAP_REQUEST = 1,
	LISP_MAP_REPLY,
	LISP_MAP_REGISTER,
	LISP_MAP_NOTIFY,
	LISP_ENCAPSULATED_CONTROL_MESSAGE = 8
};

enum {
	LISP_AUTH_NONE,
	LISP_AUTH_SHA1,
	LISP_AUTH_SHA256
};

static const struct tok lisp_type [] = {
	{ 0, "LISP-Reserved"			},
	{ 1, "LISP-Map-Request"			},
	{ 2, "LISP-Map-Reply"			},
	{ 3, "LISP-Map-Register"		},
	{ 4, "LISP-Map-Notify"			},
	{ 8, "LISP-Encapsulated-Contol-Message" },
	{ 0, NULL }
};

/*
 * P-Bit : Request for Proxy Map-Reply from the MS/MR
 * S-Bit : Security Enhancement. ETR is LISP-SEC enabled. draft-ietf-lisp-sec
 * I-Bit : 128 bit xTR-ID and 64 bit Site-ID present.
 *	   xTR-ID and Site-ID help in differentiation of xTRs in multi xTR
 *	   and multi Site deployment scenarios.
 * R-Bit : Built for a Reencapsulating-Tunnel-Router. Used in Traffic
 *	   Engineering and Service Chaining
 */
static const struct tok map_register_hdr_flag[] = {
	{ 0x08000000, "P-Proxy-Map-Reply"  },
	{ 0x04000000, "S-LISP-SEC-Capable" },
	{ 0x02000000, "I-xTR-ID-Present"   },
	{ 0x01000000, "R-Build-For-RTR"    },
	{ 0x00000100, "M-Want-Map-Notify"  },
	{ 0, NULL }
};

static const struct tok map_notify_hdr_flag[] = {
	{ 0x08000000, "I-xTR-ID-Present"   },
	{ 0x04000000, "R-Build-For-RTR"    },
	{ 0, NULL }
};

static const struct tok auth_type[] = {
	{ LISP_AUTH_NONE,   "None"   },
	{ LISP_AUTH_SHA1,   "SHA1"   },
	{ LISP_AUTH_SHA256, "SHA256" },
	{ 0, NULL}
};

static const struct tok lisp_eid_action[] = {
	{ 0, "No-Action"	},
	{ 1, "Natively-Forward" },
	{ 2, "Send-Map-Request" },
	{ 3, "Drop"		},
	{ 0, NULL}
};

static const struct tok lisp_loc_flag[] = {
	{ 0x0004, "Local-Locator" },
	{ 0x0002, "RLoc-Probed"	  },
	{ 0x0001, "Reachable"	  },
	{ 0, NULL }
};

typedef struct map_register_hdr {
	nd_uint8_t type_and_flag;
	nd_uint8_t reserved;
	nd_uint8_t reserved_and_flag2;
	nd_uint8_t record_count;
	nd_uint64_t nonce;
	nd_uint16_t key_id;
	nd_uint16_t auth_data_len;
} lisp_map_register_hdr;

#define MAP_REGISTER_HDR_LEN sizeof(lisp_map_register_hdr)

typedef struct map_register_eid {
	nd_uint32_t ttl;
	nd_uint8_t locator_count;
	nd_uint8_t eid_prefix_mask_length;
	nd_uint8_t act_auth_inc_res;
	nd_uint8_t reserved;
	nd_uint8_t reserved_version_hi;
	nd_uint8_t version_low;
	nd_uint16_t eid_prefix_afi;
} lisp_map_register_eid;

#define MAP_REGISTER_EID_LEN sizeof(lisp_map_register_eid)

typedef struct map_register_loc {
	nd_uint8_t priority;
	nd_uint8_t weight;
	nd_uint8_t m_priority;
	nd_uint8_t m_weight;
	nd_uint16_t unused_and_flag;
	nd_uint16_t locator_afi;
} lisp_map_register_loc;

#define MAP_REGISTER_LOC_LEN sizeof(lisp_map_register_loc)

static inline uint8_t extract_lisp_type(uint8_t);
static inline uint8_t is_xtr_data_present(uint8_t , uint8_t);
static void lisp_hdr_flag(netdissect_options *, const lisp_map_register_hdr *);
static void action_flag(netdissect_options *, uint8_t);
static void loc_hdr_flag(netdissect_options *, uint16_t);

void lisp_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
	uint8_t type;
	uint8_t mask_len;
	uint8_t loc_count;
	uint8_t xtr_present;
	uint8_t record_count;
	uint16_t key_id;
	uint16_t eid_afi;
	uint16_t loc_afi;
	uint16_t map_version;
	uint16_t packet_offset;
	uint16_t auth_data_len;
	uint32_t ttl;
	const u_char *packet_iterator;
	const u_char *loc_ip_pointer;
	const lisp_map_register_hdr *lisp_hdr;
	const lisp_map_register_eid *lisp_eid;
	const lisp_map_register_loc *lisp_loc;

/* Check if enough bytes for header are available */
	ND_TCHECK2(*bp, MAP_REGISTER_HDR_LEN);
	lisp_hdr = (const lisp_map_register_hdr *) bp;
	lisp_hdr_flag(ndo, lisp_hdr);
	/* Supporting only MAP NOTIFY and MAP REGISTER LISP packets */
	type = extract_lisp_type(lisp_hdr->type_and_flag);
	if ((type != LISP_MAP_REGISTER) && (type != LISP_MAP_NOTIFY))
		return;

/* Find if the packet contains xTR and Site-ID data */
	xtr_present = is_xtr_data_present(type, lisp_hdr->type_and_flag);

/* Extract the number of EID records present */
	auth_data_len = EXTRACT_16BITS(&lisp_hdr->auth_data_len);
	packet_iterator = (const u_char *)(lisp_hdr);
	packet_offset = MAP_REGISTER_HDR_LEN;
	record_count = lisp_hdr->record_count;

if (ndo->ndo_vflag) {
		key_id = EXTRACT_16BITS(&lisp_hdr->key_id);
		ND_PRINT((ndo, "\n    %u record(s), ", record_count));
		ND_PRINT((ndo, "Authentication %s,",
			tok2str(auth_type, "unknown-type", key_id)));
		hex_print(ndo, "\n    Authentication-Data: ", packet_iterator +
						packet_offset, auth_data_len);
	} else {
		ND_PRINT((ndo, " %u record(s),", record_count));
	}
	packet_offset += auth_data_len;

if (record_count == 0)
		goto invalid;

/* Print all the EID records */
	while ((length > packet_offset) && (record_count--)) {

ND_TCHECK2(*(packet_iterator + packet_offset), MAP_REGISTER_EID_LEN);
		ND_PRINT((ndo, "\n"));
		lisp_eid = (const lisp_map_register_eid *)
				((const u_char *)lisp_hdr + packet_offset);
		packet_offset += MAP_REGISTER_EID_LEN;
		mask_len = lisp_eid->eid_prefix_mask_length;
		eid_afi = EXTRACT_16BITS(&lisp_eid->eid_prefix_afi);
		loc_count = lisp_eid->locator_count;

if (ndo->ndo_vflag) {
			ttl = EXTRACT_32BITS(&lisp_eid->ttl);
			ND_PRINT((ndo, "      Record TTL %u,", ttl));
			action_flag(ndo, lisp_eid->act_auth_inc_res);
			map_version = (((lisp_eid->reserved_version_hi) & 15 ) * 255) +
					lisp_eid->version_low;
			ND_PRINT((ndo, " Map Version: %u,", map_version));
		}

switch (eid_afi) {
		case IPv4_AFI:
			ND_TCHECK2(*(packet_iterator + packet_offset), 4);
			ND_PRINT((ndo, " EID %s/%u,", ipaddr_string(ndo,
				packet_iterator + packet_offset), mask_len));
			packet_offset += 4;
			break;
		case IPv6_AFI:
			ND_TCHECK2(*(packet_iterator + packet_offset), 16);
			ND_PRINT((ndo, " EID %s/%u,", ip6addr_string(ndo,
				packet_iterator + packet_offset), mask_len));
			packet_offset += 16;
			break;
		default:
			/*
			 * No support for LCAF right now.
			 */
			return;
			break;
		}

ND_PRINT((ndo, " %u locator(s)", loc_count));

while (loc_count--) {
			ND_TCHECK2(*(packet_iterator + packet_offset), MAP_REGISTER_LOC_LEN);
			lisp_loc = (const lisp_map_register_loc *) (packet_iterator + packet_offset);
			loc_ip_pointer = (const u_char *) (lisp_loc + 1);
			packet_offset += MAP_REGISTER_LOC_LEN;
			loc_afi = EXTRACT_16BITS(&lisp_loc->locator_afi);

if (ndo->ndo_vflag)
				ND_PRINT((ndo, "\n       "));

switch (loc_afi) {
			case IPv4_AFI:
				ND_TCHECK2(*(packet_iterator + packet_offset), 4);
				ND_PRINT((ndo, " LOC %s", ipaddr_string(ndo, loc_ip_pointer)));
				packet_offset += 4;
				break;
			case IPv6_AFI:
				ND_TCHECK2(*(packet_iterator + packet_offset), 16);
				ND_PRINT((ndo, " LOC %s", ip6addr_string(ndo, loc_ip_pointer)));
				packet_offset += 16;
				break;
			default:
				break;
			}
			if (ndo->ndo_vflag) {
				ND_PRINT((ndo, "\n          Priority/Weight %u/%u,"
						" Multicast Priority/Weight %u/%u,",
						lisp_loc->priority, lisp_loc->weight,
						lisp_loc->m_priority, lisp_loc->m_weight));
				loc_hdr_flag(ndo, EXTRACT_16BITS(&lisp_loc->unused_and_flag));
			}
		}
	}

/*
	 * Print xTR and Site ID. Handle the fact that the packet could be invalid.
	 * If the xTR_ID_Present bit is not set, and we still have data to display,
	 * show it as hex data.
	 */
	if (xtr_present) {
		if (!ND_TTEST2(*(packet_iterator + packet_offset), 24))
			goto invalid;
		hex_print_with_offset(ndo, "\n    xTR-ID: ", packet_iterator + packet_offset, 16, 0);
		ND_PRINT((ndo, "\n    SITE-ID: %" PRIu64,
			EXTRACT_64BITS(packet_iterator + packet_offset + 16)));
	} else {
		/* Check if packet isn't over yet */
		if (packet_iterator + packet_offset < ndo->ndo_snapend) {
			hex_print_with_offset(ndo, "\n    Data: ", packet_iterator + packet_offset,
				(ndo->ndo_snapend - (packet_iterator + packet_offset)), 0);
		}
	}
	return;
trunc:
	ND_PRINT((ndo, "\n   %s", tstr));
	return;
invalid:
	ND_PRINT((ndo, "\n   %s", istr));
	return;
}

static inline uint8_t extract_lisp_type(uint8_t lisp_hdr_flags)
{
	return (lisp_hdr_flags) >> TYPE_INDEX;
}

static inline uint8_t is_xtr_data_present(uint8_t type, uint8_t lisp_hdr_flags)
{
	uint8_t xtr_present = 0;

if (type == LISP_MAP_REGISTER)
		xtr_present = (lisp_hdr_flags) & LISP_MAP_REGISTER_IBIT_MASK;
	else if (type == LISP_MAP_NOTIFY)
		xtr_present = (lisp_hdr_flags) & LISP_MAP_NOTIFY_IBIT_MASK;

return xtr_present;
}

static void lisp_hdr_flag(netdissect_options *ndo, const lisp_map_register_hdr *lisp_hdr)
{
	uint8_t type = extract_lisp_type(lisp_hdr->type_and_flag);

if (!ndo->ndo_vflag) {
		ND_PRINT((ndo, "%s,", tok2str(lisp_type, "unknown-type-%u", type)));
		return;
	} else {
		ND_PRINT((ndo, "%s,", tok2str(lisp_type, "unknown-type-%u", type)));
	}

if (type == LISP_MAP_REGISTER) {
		ND_PRINT((ndo, " flags [%s],", bittok2str(map_register_hdr_flag,
			 "none", EXTRACT_32BITS(lisp_hdr))));
	} else if (type == LISP_MAP_NOTIFY) {
		ND_PRINT((ndo, " flags [%s],", bittok2str(map_notify_hdr_flag,
			 "none", EXTRACT_32BITS(lisp_hdr))));
	}

return;
}

static void action_flag(netdissect_options *ndo, uint8_t act_auth_inc_res)
{
	uint8_t action;
	uint8_t authoritative;

authoritative  = ((act_auth_inc_res >> 4) & 1);

if (authoritative)
		ND_PRINT((ndo, " Authoritative,"));
	else
		ND_PRINT((ndo, " Non-Authoritative,"));

action = act_auth_inc_res >> 5;
	ND_PRINT((ndo, " %s,", tok2str(lisp_eid_action, "unknown", action)));
}

static void loc_hdr_flag(netdissect_options *ndo, uint16_t flag)
{
	ND_PRINT((ndo, " flags [%s],", bittok2str(lisp_loc_flag, "none", flag)));
}

003 File Manager

Editing: print-lisp.c

Upload File

Create Folder