print-lldp.c

TCPDUMP的C语言源代码,是在数据链路层的应用

/*
 * Copyright (c) 1998-2007 The TCPDUMP project
 *
 * 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, and (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.
 * 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.
 *
 * support for the IEEE Link Discovery Protocol as per 802.1ab
 *
 * Original code by Hannes Gredler ([e-mail])
 * IEEE and TIA extensions by Carles Kishimoto <[e-mail]>
 */

#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-lldp.c,v 1.7.2.3 2008-03-20 09:33:52 hannes Exp $";
#endif

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

#include <tcpdump-stdinc.h>

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

#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
#include "af.h"
#include "oui.h"

#define	LLDP_EXTRACT_TYPE(x) (((x)&0xfe00)>>9) 
#define	LLDP_EXTRACT_LEN(x) ((x)&0x01ff) 

/*
 * TLV type codes
 */
#define LLDP_END_TLV             0
#define LLDP_CHASSIS_ID_TLV      1
#define LLDP_PORT_ID_TLV         2
#define LLDP_TTL_TLV             3
#define LLDP_PORT_DESCR_TLV      4
#define LLDP_SYSTEM_NAME_TLV     5
#define LLDP_SYSTEM_DESCR_TLV    6
#define LLDP_SYSTEM_CAP_TLV      7
#define LLDP_MGMT_ADDR_TLV       8
#define LLDP_PRIVATE_TLV       127

static const struct tok lldp_tlv_values[] = {
    { LLDP_END_TLV, "End" },
    { LLDP_CHASSIS_ID_TLV, "Chassis ID" },
    { LLDP_PORT_ID_TLV, "Port ID" },
    { LLDP_TTL_TLV, "Time to Live" },
    { LLDP_PORT_DESCR_TLV, "Port Description" },
    { LLDP_SYSTEM_NAME_TLV, "System Name" },
    { LLDP_SYSTEM_DESCR_TLV, "System Description" },
    { LLDP_SYSTEM_CAP_TLV, "System Capabilities" },
    { LLDP_MGMT_ADDR_TLV, "Management Address" },
    { LLDP_PRIVATE_TLV, "Organization specific" },
    { 0, NULL}
};

/*
 * Chassis ID subtypes
 */
#define LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE  1
#define LLDP_CHASSIS_INTF_ALIAS_SUBTYPE    2
#define LLDP_CHASSIS_PORT_COMP_SUBTYPE     3
#define LLDP_CHASSIS_MAC_ADDR_SUBTYPE      4
#define LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE  5
#define LLDP_CHASSIS_INTF_NAME_SUBTYPE     6
#define LLDP_CHASSIS_LOCAL_SUBTYPE         7

static const struct tok lldp_chassis_subtype_values[] = {
    { LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE, "Chassis component"},
    { LLDP_CHASSIS_INTF_ALIAS_SUBTYPE, "Interface alias"},
    { LLDP_CHASSIS_PORT_COMP_SUBTYPE, "Port component"},
    { LLDP_CHASSIS_MAC_ADDR_SUBTYPE, "MAC address"},
    { LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE, "Network address"},
    { LLDP_CHASSIS_INTF_NAME_SUBTYPE, "Interface name"},
    { LLDP_CHASSIS_LOCAL_SUBTYPE, "Local"},
    { 0, NULL}
};

/*
 * Port ID subtypes
 */
#define LLDP_PORT_INTF_ALIAS_SUBTYPE       1
#define LLDP_PORT_PORT_COMP_SUBTYPE        2
#define LLDP_PORT_MAC_ADDR_SUBTYPE         3
#define LLDP_PORT_NETWORK_ADDR_SUBTYPE     4
#define LLDP_PORT_INTF_NAME_SUBTYPE        5
#define LLDP_PORT_AGENT_CIRC_ID_SUBTYPE    6
#define LLDP_PORT_LOCAL_SUBTYPE            7

static const struct tok lldp_port_subtype_values[] = {
    { LLDP_PORT_INTF_ALIAS_SUBTYPE, "Interface alias"},
    { LLDP_PORT_PORT_COMP_SUBTYPE, "Port component"},
    { LLDP_PORT_MAC_ADDR_SUBTYPE, "MAC address"},
    { LLDP_PORT_NETWORK_ADDR_SUBTYPE, "Network Address"},
    { LLDP_PORT_INTF_NAME_SUBTYPE, "Interface Name"},
    { LLDP_PORT_AGENT_CIRC_ID_SUBTYPE, "Agent circuit ID"},
    { LLDP_PORT_LOCAL_SUBTYPE, "Local"},
    { 0, NULL}
};

/*
 * System Capabilities
 */
#define LLDP_CAP_OTHER              (1 <<  0)
#define LLDP_CAP_REPEATER           (1 <<  1)
#define LLDP_CAP_BRIDGE             (1 <<  2)
#define LLDP_CAP_WLAN_AP            (1 <<  3)
#define LLDP_CAP_ROUTER             (1 <<  4)
#define LLDP_CAP_PHONE              (1 <<  5)
#define LLDP_CAP_DOCSIS             (1 <<  6)
#define LLDP_CAP_STATION_ONLY       (1 <<  7)

static const struct tok lldp_cap_values[] = {
    { LLDP_CAP_OTHER, "Other"},
    { LLDP_CAP_REPEATER, "Repeater"},
    { LLDP_CAP_BRIDGE, "Bridge"},
    { LLDP_CAP_WLAN_AP, "WLAN AP"},
    { LLDP_CAP_ROUTER, "Router"},
    { LLDP_CAP_PHONE, "Telephone"},
    { LLDP_CAP_DOCSIS, "Docsis"},
    { LLDP_CAP_STATION_ONLY, "Station Only"},
    { 0, NULL}
};

#define LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID		1
#define LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID	2
#define LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME		3
#define LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY	4

static const struct tok lldp_8021_subtype_values[] = {
    { LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID, "Port VLAN Id"},
    { LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID, "Port and Protocol VLAN ID"},
    { LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME, "VLAN name"},
    { LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY, "Protocol Identity"},
    { 0, NULL}
};

#define LLDP_8021_PORT_PROTOCOL_VLAN_SUPPORT       (1 <<  1)
#define LLDP_8021_PORT_PROTOCOL_VLAN_STATUS        (1 <<  2)

static const struct tok lldp_8021_port_protocol_id_values[] = {
    { LLDP_8021_PORT_PROTOCOL_VLAN_SUPPORT, "supported"},
    { LLDP_8021_PORT_PROTOCOL_VLAN_STATUS, "enabled"},
    { 0, NULL}
};

#define LLDP_PRIVATE_8023_SUBTYPE_MACPHY        1
#define LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER      2
#define LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR      3
#define LLDP_PRIVATE_8023_SUBTYPE_MTU           4

static const struct tok lldp_8023_subtype_values[] = {
    { LLDP_PRIVATE_8023_SUBTYPE_MACPHY,	"MAC/PHY configuration/status"},
    { LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER, "Power via MDI"},
    { LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR, "Link aggregation"},
    { LLDP_PRIVATE_8023_SUBTYPE_MTU, "Max frame size"},
    { 0, NULL}
};

#define LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES                   1
#define LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY                 2
#define LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID                       3
#define LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI             4
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV         5
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV         6
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV         7
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER        8
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME    9
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME           10
#define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID             11

static const struct tok lldp_tia_subtype_values[] = {
    { LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES, "LLDP-MED Capabilities" },
    { LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY, "Network policy" },
    { LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID, "Location identification" },
    { LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI, "Extended power-via-MDI" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV, "Inventory - hardware revision" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV, "Inventory - firmware revision" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV, "Inventory - software revision" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER, "Inventory - serial number" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME, "Inventory - manufacturer name" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME, "Inventory - model name" },
    { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID, "Inventory - asset ID" },
    { 0, NULL}
};

#define LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_METERS       1
#define LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_FLOORS       2

static const struct tok lldp_tia_location_altitude_type_values[] = {
    { LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_METERS, "meters"},
    { LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_FLOORS, "floors"},
    { 0, NULL}
};

/* ANSI/TIA-1057 - Annex B */
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A1		1
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A2		2
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A3		3
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A4		4
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A5		5
#define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A6		6

static const struct tok lldp_tia_location_lci_catype_values[] = {
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A1, "national subdivisions (state,canton,region,province,prefecture)"},
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A2, "county, parish, gun, district"},
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A3, "city, township, shi"},
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A4, "city division, borough, city district, ward chou"},
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A5, "neighborhood, block"},
    { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A6, "street"},
    { 0, NULL}
};

static const struct tok lldp_tia_location_lci_what_values[] = {
    { 0, "location of DHCP server"},
    { 1, "location of the network element believed to be closest to the client"}, 
    { 2, "location of the client"},
    { 0, NULL}
};

/*
 * From RFC 3636 - dot3MauType
 */
#define		LLDP_MAU_TYPE_UNKNOWN		0
#define		LLDP_MAU_TYPE_AUI		1
#define		LLDP_MAU_TYPE_10BASE_5		2
#define		LLDP_MAU_TYPE_FOIRL		3
#define		LLDP_MAU_TYPE_10BASE_2		4
#define		LLDP_MAU_TYPE_10BASE_T		5
#define		LLDP_MAU_TYPE_10BASE_FP		6
#define		LLDP_MAU_TYPE_10BASE_FB		7
#define		LLDP_MAU_TYPE_10BASE_FL		8
#define		LLDP_MAU_TYPE_10BROAD36		9
#define		LLDP_MAU_TYPE_10BASE_T_HD	10
#define		LLDP_MAU_TYPE_10BASE_T_FD	11
#define		LLDP_MAU_TYPE_10BASE_FL_HD	12
#define		LLDP_MAU_TYPE_10BASE_FL_FD	13
#define		LLDP_MAU_TYPE_100BASE_T4	14
#define		LLDP_MAU_TYPE_100BASE_TX_HD	15
#define		LLDP_MAU_TYPE_100BASE_TX_FD	16
#define		LLDP_MAU_TYPE_100BASE_FX_HD	17
#define		LLDP_MAU_TYPE_100BASE_FX_FD	18
#define		LLDP_MAU_TYPE_100BASE_T2_HD	19
#define		LLDP_MAU_TYPE_100BASE_T2_FD	20
#define		LLDP_MAU_TYPE_1000BASE_X_HD	21
#define		LLDP_MAU_TYPE_1000BASE_X_FD	22
#define		LLDP_MAU_TYPE_1000BASE_LX_HD	23
#define		LLDP_MAU_TYPE_1000BASE_LX_FD	24
#define		LLDP_MAU_TYPE_1000BASE_SX_HD	25
#define		LLDP_MAU_TYPE_1000BASE_SX_FD	26
#define		LLDP_MAU_TYPE_1000BASE_CX_HD	27
#define		LLDP_MAU_TYPE_1000BASE_CX_FD	28
#define		LLDP_MAU_TYPE_1000BASE_T_HD	29
#define		LLDP_MAU_TYPE_1000BASE_T_FD	30
#define		LLDP_MAU_TYPE_10GBASE_X		31
#define		LLDP_MAU_TYPE_10GBASE_LX4	32
#define		LLDP_MAU_TYPE_10GBASE_R		33
#define		LLDP_MAU_TYPE_10GBASE_ER	34
#define		LLDP_MAU_TYPE_10GBASE_LR	35
#define		LLDP_MAU_TYPE_10GBASE_SR	36
#define		LLDP_MAU_TYPE_10GBASE_W		37
#define		LLDP_MAU_TYPE_10GBASE_EW	38
#define		LLDP_MAU_TYPE_10GBASE_LW	39
#define		LLDP_MAU_TYPE_10GBASE_SW	40

static const struct tok lldp_mau_types_values[] = {
    { LLDP_MAU_TYPE_UNKNOWN,            "Unknown"},
    { LLDP_MAU_TYPE_AUI,                "AUI"},
    { LLDP_MAU_TYPE_10BASE_5,           "10BASE_5"},
    { LLDP_MAU_TYPE_FOIRL,              "FOIRL"},
    { LLDP_MAU_TYPE_10BASE_2,           "10BASE2"},
    { LLDP_MAU_TYPE_10BASE_T,           "10BASET duplex mode unknown"},
    { LLDP_MAU_TYPE_10BASE_FP,          "10BASEFP"},
    { LLDP_MAU_TYPE_10BASE_FB,          "10BASEFB"},
    { LLDP_MAU_TYPE_10BASE_FL,          "10BASEFL duplex mode unknown"},
    { LLDP_MAU_TYPE_10BROAD36,          "10BROAD36"},
    { LLDP_MAU_TYPE_10BASE_T_HD,        "10BASET hdx"},
    { LLDP_MAU_TYPE_10BASE_T_FD,        "10BASET fdx"},
    { LLDP_MAU_TYPE_10BASE_FL_HD,       "10BASEFL hdx"},
    { LLDP_MAU_TYPE_10BASE_FL_FD,       "10BASEFL fdx"},
    { LLDP_MAU_TYPE_100BASE_T4,         "100BASET4"},
    { LLDP_MAU_TYPE_100BASE_TX_HD,      "100BASETX hdx"},
    { LLDP_MAU_TYPE_100BASE_TX_FD,      "100BASETX fdx"},
    { LLDP_MAU_TYPE_100BASE_FX_HD,      "100BASEFX hdx"},
    { LLDP_MAU_TYPE_100BASE_FX_FD,      "100BASEFX fdx"},
    { LLDP_MAU_TYPE_100BASE_T2_HD,      "100BASET2 hdx"},
    { LLDP_MAU_TYPE_100BASE_T2_FD,      "100BASET2 fdx"},
    { LLDP_MAU_TYPE_1000BASE_X_HD,      "1000BASEX hdx"},
    { LLDP_MAU_TYPE_1000BASE_X_FD,      "1000BASEX fdx"},
    { LLDP_MAU_TYPE_1000BASE_LX_HD,     "1000BASELX hdx"},
    { LLDP_MAU_TYPE_1000BASE_LX_FD,     "1000BASELX fdx"},
    { LLDP_MAU_TYPE_1000BASE_SX_HD,     "1000BASESX hdx"},
    { LLDP_MAU_TYPE_1000BASE_SX_FD,     "1000BASESX fdx"},
    { LLDP_MAU_TYPE_1000BASE_CX_HD,     "1000BASECX hdx"},
    { LLDP_MAU_TYPE_1000BASE_CX_FD,     "1000BASECX fdx"},
    { LLDP_MAU_TYPE_1000BASE_T_HD,      "1000BASET hdx"},
    { LLDP_MAU_TYPE_1000BASE_T_FD,      "1000BASET fdx"},
    { LLDP_MAU_TYPE_10GBASE_X,          "10GBASEX"},
    { LLDP_MAU_TYPE_10GBASE_LX4,        "10GBASELX4"},
    { LLDP_MAU_TYPE_10GBASE_R,          "10GBASER"},
    { LLDP_MAU_TYPE_10GBASE_ER,         "10GBASEER"},
    { LLDP_MAU_TYPE_10GBASE_LR,         "10GBASELR"},
    { LLDP_MAU_TYPE_10GBASE_SR,         "10GBASESR"},
    { LLDP_MAU_TYPE_10GBASE_W,          "10GBASEW"},
    { LLDP_MAU_TYPE_10GBASE_EW,         "10GBASEEW"},
    { LLDP_MAU_TYPE_10GBASE_LW,         "10GBASELW"},
    { LLDP_MAU_TYPE_10GBASE_SW,         "10GBASESW"},
    { 0, NULL}
};

#define LLDP_8023_AUTONEGOTIATION_SUPPORT       (1 <<  0)
#define LLDP_8023_AUTONEGOTIATION_STATUS        (1 <<  1)

static const struct tok lldp_8023_autonegotiation_values[] = {
    { LLDP_8023_AUTONEGOTIATION_SUPPORT, "supported"},
    { LLDP_8023_AUTONEGOTIATION_STATUS, "enabled"},
    { 0, NULL}
};

#define LLDP_TIA_CAPABILITY_MED                         (1 <<  0)
#define LLDP_TIA_CAPABILITY_NETWORK_POLICY              (1 <<  1)
#define LLDP_TIA_CAPABILITY_LOCATION_IDENTIFICATION     (1 <<  2)
#define LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PSE      (1 <<  3)
#define LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PD       (1 <<  4)
#define LLDP_TIA_CAPABILITY_INVENTORY                   (1 <<  5)

static const struct tok lldp_tia_capabilities_values[] = {
    { LLDP_TIA_CAPABILITY_MED, "LLDP-MED capabilities"},
    { LLDP_TIA_CAPABILITY_NETWORK_POLICY, "network policy"},
    { LLDP_TIA_CAPABILITY_LOCATION_IDENTIFICATION, "location identification"},
    { LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PSE, "extended power via MDI-PSE"},
    { LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PD, "extended power via MDI-PD"},
    { LLDP_TIA_CAPABILITY_INVENTORY, "Inventory"},
    { 0, NULL}
};

#define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_1           1
#define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_2           2
#define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_3           3
#define LLDP_TIA_DEVICE_TYPE_NETWORK_CONNECTIVITY       4

static const struct tok lldp_tia_device_type_values[] = {
    { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_1, "endpoint class 1"},
    { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_2, "endpoint class 2"},
    { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_3, "endpoint class 3"},
    { LLDP_TIA_DEVICE_TYPE_NETWORK_CONNECTIVITY, "network connectivity"},
    { 0, NULL}
};

#define LLDP_TIA_APPLICATION_TYPE_VOICE                 1
#define LLDP_TIA_APPLICATION_TYPE_VOICE_SIGNALING       2
#define LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE           3
#define LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE_SIGNALING 4
#define LLDP_TIA_APPLICATION_TYPE_SOFTPHONE_VOICE       5