diff options
Diffstat (limited to 'contrib/tcpdump/print-eigrp.c')
-rw-r--r-- | contrib/tcpdump/print-eigrp.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/contrib/tcpdump/print-eigrp.c b/contrib/tcpdump/print-eigrp.c deleted file mode 100644 index 3168b3c..0000000 --- a/contrib/tcpdump/print-eigrp.c +++ /dev/null @@ -1,480 +0,0 @@ -/* - * Copyright (c) 1998-2004 Hannes Gredler <hannes@tcpdump.org> - * 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. - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-eigrp.c,v 1.5.2.2 2005/05/06 02:53:41 guy 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" - -/* - * packet format documented at - * http://www.rhyshaden.com/eigrp.htm - */ - -struct eigrp_common_header { - u_int8_t version; - u_int8_t opcode; - u_int8_t checksum[2]; - u_int8_t flags[4]; - u_int8_t seq[4]; - u_int8_t ack[4]; - u_int8_t asn[4]; -}; - -#define EIGRP_VERSION 2 - -#define EIGRP_OPCODE_UPDATE 1 -#define EIGRP_OPCODE_QUERY 3 -#define EIGRP_OPCODE_REPLY 4 -#define EIGRP_OPCODE_HELLO 5 -#define EIGRP_OPCODE_IPXSAP 6 -#define EIGRP_OPCODE_PROBE 7 - -static const struct tok eigrp_opcode_values[] = { - { EIGRP_OPCODE_UPDATE, "Update" }, - { EIGRP_OPCODE_QUERY, "Query" }, - { EIGRP_OPCODE_REPLY, "Reply" }, - { EIGRP_OPCODE_HELLO, "Hello" }, - { EIGRP_OPCODE_IPXSAP, "IPX SAP" }, - { EIGRP_OPCODE_PROBE, "Probe" }, - { 0, NULL} -}; - -static const struct tok eigrp_common_header_flag_values[] = { - { 0x01, "Init" }, - { 0x02, "Conditionally Received" }, - { 0, NULL} -}; - -struct eigrp_tlv_header { - u_int8_t type[2]; - u_int8_t length[2]; -}; - -#define EIGRP_TLV_GENERAL_PARM 0x0001 -#define EIGRP_TLV_AUTH 0x0002 -#define EIGRP_TLV_SEQ 0x0003 -#define EIGRP_TLV_SW_VERSION 0x0004 -#define EIGRP_TLV_MCAST_SEQ 0x0005 -#define EIGRP_TLV_IP_INT 0x0102 -#define EIGRP_TLV_IP_EXT 0x0103 -#define EIGRP_TLV_AT_INT 0x0202 -#define EIGRP_TLV_AT_EXT 0x0203 -#define EIGRP_TLV_AT_CABLE_SETUP 0x0204 -#define EIGRP_TLV_IPX_INT 0x0302 -#define EIGRP_TLV_IPX_EXT 0x0303 - -static const struct tok eigrp_tlv_values[] = { - { EIGRP_TLV_GENERAL_PARM, "General Parameters"}, - { EIGRP_TLV_AUTH, "Authentication"}, - { EIGRP_TLV_SEQ, "Sequence"}, - { EIGRP_TLV_SW_VERSION, "Software Version"}, - { EIGRP_TLV_MCAST_SEQ, "Next Multicast Sequence"}, - { EIGRP_TLV_IP_INT, "IP Internal routes"}, - { EIGRP_TLV_IP_EXT, "IP External routes"}, - { EIGRP_TLV_AT_INT, "AppleTalk Internal routes"}, - { EIGRP_TLV_AT_EXT, "AppleTalk External routes"}, - { EIGRP_TLV_AT_CABLE_SETUP, "AppleTalk Cable setup"}, - { EIGRP_TLV_IPX_INT, "IPX Internal routes"}, - { EIGRP_TLV_IPX_EXT, "IPX External routes"}, - { 0, NULL} -}; - -struct eigrp_tlv_general_parm_t { - u_int8_t k1; - u_int8_t k2; - u_int8_t k3; - u_int8_t k4; - u_int8_t k5; - u_int8_t res; - u_int8_t holdtime[2]; -}; - -struct eigrp_tlv_sw_version_t { - u_int8_t ios_major; - u_int8_t ios_minor; - u_int8_t eigrp_major; - u_int8_t eigrp_minor; -}; - -struct eigrp_tlv_ip_int_t { - u_int8_t nexthop[4]; - u_int8_t delay[4]; - u_int8_t bandwidth[4]; - u_int8_t mtu[3]; - u_int8_t hopcount; - u_int8_t reliability; - u_int8_t load; - u_int8_t reserved[2]; - u_int8_t plen; - u_int8_t destination; /* variable length [1-4] bytes encoding */ -}; - -struct eigrp_tlv_ip_ext_t { - u_int8_t nexthop[4]; - u_int8_t origin_router[4]; - u_int8_t origin_as[4]; - u_int8_t tag[4]; - u_int8_t metric[4]; - u_int8_t reserved[2]; - u_int8_t proto_id; - u_int8_t flags; - u_int8_t delay[4]; - u_int8_t bandwidth[4]; - u_int8_t mtu[3]; - u_int8_t hopcount; - u_int8_t reliability; - u_int8_t load; - u_int8_t reserved2[2]; - u_int8_t plen; - u_int8_t destination; /* variable length [1-4] bytes encoding */ -}; - -struct eigrp_tlv_at_cable_setup_t { - u_int8_t cable_start[2]; - u_int8_t cable_end[2]; - u_int8_t router_id[4]; -}; - -struct eigrp_tlv_at_int_t { - u_int8_t nexthop[4]; - u_int8_t delay[4]; - u_int8_t bandwidth[4]; - u_int8_t mtu[3]; - u_int8_t hopcount; - u_int8_t reliability; - u_int8_t load; - u_int8_t reserved[2]; - u_int8_t cable_start[2]; - u_int8_t cable_end[2]; -}; - -struct eigrp_tlv_at_ext_t { - u_int8_t nexthop[4]; - u_int8_t origin_router[4]; - u_int8_t origin_as[4]; - u_int8_t tag[4]; - u_int8_t proto_id; - u_int8_t flags; - u_int8_t metric[2]; - u_int8_t delay[4]; - u_int8_t bandwidth[4]; - u_int8_t mtu[3]; - u_int8_t hopcount; - u_int8_t reliability; - u_int8_t load; - u_int8_t reserved2[2]; - u_int8_t cable_start[2]; - u_int8_t cable_end[2]; -}; - -static const struct tok eigrp_ext_proto_id_values[] = { - { 0x01, "IGRP" }, - { 0x02, "EIGRP" }, - { 0x03, "Static" }, - { 0x04, "RIP" }, - { 0x05, "Hello" }, - { 0x06, "OSPF" }, - { 0x07, "IS-IS" }, - { 0x08, "EGP" }, - { 0x09, "BGP" }, - { 0x0a, "IDRP" }, - { 0x0b, "Connected" }, - { 0, NULL} -}; - -void -eigrp_print(register const u_char *pptr, register u_int len) { - - const struct eigrp_common_header *eigrp_com_header; - const struct eigrp_tlv_header *eigrp_tlv_header; - const u_char *tptr,*tlv_tptr; - u_int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen, byte_length, bit_length; - u_int8_t prefix[4]; - - union { - const struct eigrp_tlv_general_parm_t *eigrp_tlv_general_parm; - const struct eigrp_tlv_sw_version_t *eigrp_tlv_sw_version; - const struct eigrp_tlv_ip_int_t *eigrp_tlv_ip_int; - const struct eigrp_tlv_ip_ext_t *eigrp_tlv_ip_ext; - const struct eigrp_tlv_at_cable_setup_t *eigrp_tlv_at_cable_setup; - const struct eigrp_tlv_at_int_t *eigrp_tlv_at_int; - const struct eigrp_tlv_at_ext_t *eigrp_tlv_at_ext; - } tlv_ptr; - - tptr=pptr; - eigrp_com_header = (const struct eigrp_common_header *)pptr; - TCHECK(*eigrp_com_header); - - /* - * Sanity checking of the header. - */ - if (eigrp_com_header->version != EIGRP_VERSION) { - printf("EIGRP version %u packet not supported",eigrp_com_header->version); - return; - } - - /* in non-verbose mode just lets print the basic Message Type*/ - if (vflag < 1) { - printf("EIGRP %s, length: %u", - tok2str(eigrp_opcode_values, "unknown (%u)",eigrp_com_header->opcode), - len); - return; - } - - /* ok they seem to want to know everything - lets fully decode it */ - - tlen=len-sizeof(struct eigrp_common_header); - - /* FIXME print other header info */ - printf("\n\tEIGRP v%u, opcode: %s (%u), chksum: 0x%04x, Flags: [%s]\n\tseq: 0x%08x, ack: 0x%08x, AS: %u, length: %u", - eigrp_com_header->version, - tok2str(eigrp_opcode_values, "unknown, type: %u",eigrp_com_header->opcode), - eigrp_com_header->opcode, - EXTRACT_16BITS(&eigrp_com_header->checksum), - tok2str(eigrp_common_header_flag_values, - "none", - EXTRACT_32BITS(&eigrp_com_header->flags)), - EXTRACT_32BITS(&eigrp_com_header->seq), - EXTRACT_32BITS(&eigrp_com_header->ack), - EXTRACT_32BITS(&eigrp_com_header->asn), - tlen); - - tptr+=sizeof(const struct eigrp_common_header); - - while(tlen>0) { - /* did we capture enough for fully decoding the object header ? */ - TCHECK2(*tptr, sizeof(struct eigrp_tlv_header)); - - eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr; - eigrp_tlv_len=EXTRACT_16BITS(&eigrp_tlv_header->length); - eigrp_tlv_type=EXTRACT_16BITS(&eigrp_tlv_header->type); - - - if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) || - eigrp_tlv_len > tlen) { - print_unknown_data(tptr+sizeof(sizeof(struct eigrp_tlv_header)),"\n\t ",tlen); - return; - } - - printf("\n\t %s TLV (0x%04x), length: %u", - tok2str(eigrp_tlv_values, - "Unknown", - eigrp_tlv_type), - eigrp_tlv_type, - eigrp_tlv_len); - - tlv_tptr=tptr+sizeof(struct eigrp_tlv_header); - tlv_tlen=eigrp_tlv_len-sizeof(struct eigrp_tlv_header); - - /* did we capture enough for fully decoding the object ? */ - TCHECK2(*tptr, eigrp_tlv_len); - - switch(eigrp_tlv_type) { - - case EIGRP_TLV_GENERAL_PARM: - tlv_ptr.eigrp_tlv_general_parm = (const struct eigrp_tlv_general_parm_t *)tlv_tptr; - - printf("\n\t holdtime: %us, k1 %u, k2 %u, k3 %u, k4 %u, k5 %u", - EXTRACT_16BITS(tlv_ptr.eigrp_tlv_general_parm->holdtime), - tlv_ptr.eigrp_tlv_general_parm->k1, - tlv_ptr.eigrp_tlv_general_parm->k2, - tlv_ptr.eigrp_tlv_general_parm->k3, - tlv_ptr.eigrp_tlv_general_parm->k4, - tlv_ptr.eigrp_tlv_general_parm->k5); - break; - - case EIGRP_TLV_SW_VERSION: - tlv_ptr.eigrp_tlv_sw_version = (const struct eigrp_tlv_sw_version_t *)tlv_tptr; - - printf("\n\t IOS version: %u.%u, EIGRP version %u.%u", - tlv_ptr.eigrp_tlv_sw_version->ios_major, - tlv_ptr.eigrp_tlv_sw_version->ios_minor, - tlv_ptr.eigrp_tlv_sw_version->eigrp_major, - tlv_ptr.eigrp_tlv_sw_version->eigrp_minor); - break; - - case EIGRP_TLV_IP_INT: - tlv_ptr.eigrp_tlv_ip_int = (const struct eigrp_tlv_ip_int_t *)tlv_tptr; - - bit_length = tlv_ptr.eigrp_tlv_ip_int->plen; - if (bit_length > 32) { - printf("\n\t illegal prefix length %u",bit_length); - break; - } - byte_length = (bit_length + 7) / 8; /* variable length encoding */ - memset(prefix, 0, 4); - memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_int->destination,byte_length); - - printf("\n\t IPv4 prefix: %15s/%u, nexthop: ", - ipaddr_string(prefix), - bit_length); - if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0) - printf("self"); - else - printf("%s",ipaddr_string(&tlv_ptr.eigrp_tlv_ip_int->nexthop)); - - printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", - (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->delay)/100), - EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->bandwidth), - EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_int->mtu), - tlv_ptr.eigrp_tlv_ip_int->hopcount, - tlv_ptr.eigrp_tlv_ip_int->reliability, - tlv_ptr.eigrp_tlv_ip_int->load); - break; - - case EIGRP_TLV_IP_EXT: - tlv_ptr.eigrp_tlv_ip_ext = (const struct eigrp_tlv_ip_ext_t *)tlv_tptr; - - bit_length = tlv_ptr.eigrp_tlv_ip_ext->plen; - if (bit_length > 32) { - printf("\n\t illegal prefix length %u",bit_length); - break; - } - byte_length = (bit_length + 7) / 8; /* variable length encoding */ - memset(prefix, 0, 4); - memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_ext->destination,byte_length); - - printf("\n\t IPv4 prefix: %15s/%u, nexthop: ", - ipaddr_string(prefix), - bit_length); - if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0) - printf("self"); - else - printf("%s",ipaddr_string(&tlv_ptr.eigrp_tlv_ip_ext->nexthop)); - - printf("\n\t origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u", - ipaddr_string(tlv_ptr.eigrp_tlv_ip_ext->origin_router), - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->origin_as), - tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_ip_ext->proto_id), - tlv_ptr.eigrp_tlv_ip_ext->flags, - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->tag), - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->metric)); - - printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", - (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->delay)/100), - EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->bandwidth), - EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_ext->mtu), - tlv_ptr.eigrp_tlv_ip_ext->hopcount, - tlv_ptr.eigrp_tlv_ip_ext->reliability, - tlv_ptr.eigrp_tlv_ip_ext->load); - break; - - case EIGRP_TLV_AT_CABLE_SETUP: - tlv_ptr.eigrp_tlv_at_cable_setup = (const struct eigrp_tlv_at_cable_setup_t *)tlv_tptr; - - printf("\n\t Cable-range: %u-%u, Router-ID %u", - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_start), - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_end), - EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->router_id)); - break; - - case EIGRP_TLV_AT_INT: - tlv_ptr.eigrp_tlv_at_int = (const struct eigrp_tlv_at_int_t *)tlv_tptr; - - printf("\n\t Cable-Range: %u-%u, nexthop: ", - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_start), - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_end)); - - if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop) == 0) - printf("self"); - else - printf("%u.%u", - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop), - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop[2])); - - printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", - (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->delay)/100), - EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->bandwidth), - EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_int->mtu), - tlv_ptr.eigrp_tlv_at_int->hopcount, - tlv_ptr.eigrp_tlv_at_int->reliability, - tlv_ptr.eigrp_tlv_at_int->load); - break; - - case EIGRP_TLV_AT_EXT: - tlv_ptr.eigrp_tlv_at_ext = (const struct eigrp_tlv_at_ext_t *)tlv_tptr; - - printf("\n\t Cable-Range: %u-%u, nexthop: ", - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_start), - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_end)); - - if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0) - printf("self"); - else - printf("%u.%u", - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop), - EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2])); - - printf("\n\t origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u", - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_router), - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_as), - tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_at_ext->proto_id), - tlv_ptr.eigrp_tlv_at_ext->flags, - EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->tag), - EXTRACT_16BITS(tlv_ptr.eigrp_tlv_at_ext->metric)); - - printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u", - (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->delay)/100), - EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->bandwidth), - EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_ext->mtu), - tlv_ptr.eigrp_tlv_at_ext->hopcount, - tlv_ptr.eigrp_tlv_at_ext->reliability, - tlv_ptr.eigrp_tlv_at_ext->load); - break; - - /* - * FIXME those are the defined TLVs that lack a decoder - * you are welcome to contribute code ;-) - */ - - case EIGRP_TLV_AUTH: - case EIGRP_TLV_SEQ: - case EIGRP_TLV_MCAST_SEQ: - case EIGRP_TLV_IPX_INT: - case EIGRP_TLV_IPX_EXT: - - default: - if (vflag <= 1) - print_unknown_data(tlv_tptr,"\n\t ",tlv_tlen); - break; - } - /* do we want to see an additionally hexdump ? */ - if (vflag > 1) - print_unknown_data(tptr+sizeof(sizeof(struct eigrp_tlv_header)),"\n\t ", - eigrp_tlv_len-sizeof(struct eigrp_tlv_header)); - - tptr+=eigrp_tlv_len; - tlen-=eigrp_tlv_len; - } - return; -trunc: - printf("\n\t\t packet exceeded snapshot"); -} |