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  • Committer: Bazaar Package Importer
  • Author(s): Frederic Peters
  • Date: 2007-04-01 08:58:40 UTC
  • mfrom: (1.1.3 upstream)
  • Revision ID: james.westby@ubuntu.com-20070401085840-or3qhrpv8alt1bwg
Tags: 0.99.5-1
* New upstream release.
* debian/patches/09_idl2wrs.dpatch: updated to patch idl2wrs.sh.in.

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epan/dissectors/packet-isis-lsp.c
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/* packet-isis-lsp.c
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 * Routines for decoding isis lsp packets and their CLVs
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 *
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 * $Id: packet-isis-lsp.c 18196 2006-05-21 04:49:01Z sahlberg $
 
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 * $Id: packet-isis-lsp.c 20214 2006-12-26 09:13:05Z jake $
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 * Stuart Stanley <stuarts@mxmail.net>
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 *
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 * Wireshark - Network traffic analyzer
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#include "packet-isis-lsp.h"
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#include <epan/addr_resolv.h>
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#include <epan/addr_and_mask.h>
 
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#include <epan/expert.h>
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/* lsp packets */
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static int hf_isis_lsp_pdu_length = -1;
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static int hf_isis_lsp_sequence_number = -1;
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static int hf_isis_lsp_checksum = -1;
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static int hf_isis_lsp_checksum_bad = -1;
 
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static int hf_isis_lsp_checksum_good = -1;
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static int hf_isis_lsp_clv_ipv4_int_addr = -1;
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static int hf_isis_lsp_clv_ipv6_int_addr = -1;
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static int hf_isis_lsp_clv_te_router_id = -1;
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static gint ett_isis_lsp = -1;
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static gint ett_isis_lsp_info = -1;
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static gint ett_isis_lsp_att = -1;
 
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static gint ett_isis_lsp_cksum = -1;
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static gint ett_isis_lsp_clv_area_addr = -1;
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static gint ett_isis_lsp_clv_is_neighbors = -1;
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static gint ett_isis_lsp_clv_ext_is_reachability = -1; /* CLV 22 */
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        }
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}
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static void isis_lsp_checkum_additional_info(tvbuff_t * tvb, packet_info * pinfo, 
 
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    proto_item * it_cksum, int offset, gboolean is_cksum_correct)
 
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{
 
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        proto_tree * checksum_tree;
 
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        proto_item * item;
 
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        checksum_tree = proto_item_add_subtree(it_cksum, ett_isis_lsp_cksum);
 
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        item = proto_tree_add_boolean(checksum_tree, hf_isis_lsp_checksum_good, tvb,
 
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           offset, 2, is_cksum_correct);
 
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        PROTO_ITEM_SET_GENERATED(item);
 
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        item = proto_tree_add_boolean(checksum_tree, hf_isis_lsp_checksum_bad, tvb,
 
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           offset, 2, !is_cksum_correct);
 
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        PROTO_ITEM_SET_GENERATED(item);
 
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        if (!is_cksum_correct) {
 
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          expert_add_info_format(pinfo, item, PI_CHECKSUM, PI_ERROR, "Bad checksum");
 
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          if (check_col(pinfo->cinfo, COL_INFO))
 
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            col_append_fstr(pinfo->cinfo, COL_INFO, " [ISIS CHECKSUM INCORRECT]");
 
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        }
 
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}
 
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/*
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 * Name: isis_dissect_isis_lsp()
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 *
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        guint16         pdu_length, checksum, cacl_checksum=0;
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        guint8          lsp_info, lsp_att;
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        int             len, offset_checksum;
 
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        proto_item      *it_cksum;
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        if (tree) {
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                ti = proto_tree_add_text(tree, tvb, offset, -1,
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        offset += 2;
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        if (tree) {
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                proto_tree_add_text(lsp_tree, tvb, offset, 2,
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                                    "Remaining Lifetime: %us",
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                                    tvb_get_ntohs(tvb, offset));
 
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                proto_tree_add_item(lsp_tree, hf_isis_lsp_remaining_life, 
 
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                        tvb, offset, 2, FALSE);
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        }
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        offset += 2;
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        offset_checksum = offset;
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        offset += id_length + 2;
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        if (tree) {
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                proto_tree_add_uint(lsp_tree, hf_isis_lsp_sequence_number, tvb,
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                        offset, 4,
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                        tvb_get_ntohl(tvb, offset));
 
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                proto_tree_add_item(lsp_tree, hf_isis_lsp_sequence_number, 
 
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                        tvb, offset, 4, FALSE);
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        }
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        if (check_col(pinfo->cinfo, COL_INFO)) {
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                col_append_fstr(pinfo->cinfo, COL_INFO, ", Sequence: 0x%08x, Lifetime: %5us",
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                                        tvb_length_remaining(tvb, offset_checksum));
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                        break;
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                        case CKSUM_NOT_OK :
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                                        proto_tree_add_uint_format(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
 
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                                        it_cksum = proto_tree_add_uint_format(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
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                                                "Checksum: 0x%04x [incorrect, should be 0x%04x]",
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                                                checksum, cacl_checksum);
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                                        proto_tree_add_boolean_hidden(lsp_tree, hf_isis_lsp_checksum_bad,
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                                                tvb, offset, 2, TRUE);
 
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                                        isis_lsp_checkum_additional_info(tvb, pinfo, it_cksum, offset, FALSE);
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                        break;
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                        case CKSUM_OK :
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                                        proto_tree_add_uint_format(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
 
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                                        it_cksum = proto_tree_add_uint_format(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
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                                                "Checksum: 0x%04x [correct]", checksum);
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                                        proto_tree_add_boolean_hidden(lsp_tree, hf_isis_lsp_checksum_bad,
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                                                tvb, offset, 2, FALSE);
 
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                                        isis_lsp_checkum_additional_info(tvb, pinfo, it_cksum, offset, TRUE);
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                        break;
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                        default :
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                                g_message("'check_and_get_checksum' returned an invalid value");
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                { "Checksum",           "isis.lsp.checksum",FT_UINT16,
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                  BASE_HEX, NULL, 0x0, "", HFILL }},
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                { &hf_isis_lsp_checksum_good,
 
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                { "Good Checksum", "isis.lsp.checksum_good", FT_BOOLEAN, BASE_NONE,
 
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                        NULL, 0, "Good IS-IS LSP Checksum", HFILL }},
 
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                { &hf_isis_lsp_checksum_bad,
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                { "Bad Checksum", "isis.lsp.checksum_bad", FT_BOOLEAN, BASE_NONE,
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                        NULL, 0, "Bad IS-IS LSP Checksum", HFILL }},
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                { &hf_isis_lsp_is_type,
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                { "Type of Intermediate System",        "isis.lsp.is_type", FT_UINT8, BASE_DEC,
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                        VALS(isis_lsp_istype_vals), ISIS_LSP_IS_TYPE_MASK,
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                        "", HFILL }},
 
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                        "", HFILL }}
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        };
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        static gint *ett[] = {
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                &ett_isis_lsp,
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                &ett_isis_lsp_info,
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                &ett_isis_lsp_att,
 
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                &ett_isis_lsp_cksum,
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                &ett_isis_lsp_clv_area_addr,
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                &ett_isis_lsp_clv_is_neighbors,
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                &ett_isis_lsp_clv_ext_is_reachability, /* CLV 22 */
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                &ett_isis_lsp_clv_mt_is,
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                &ett_isis_lsp_part_of_clv_mt_is,
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    &ett_isis_lsp_clv_mt_reachable_IPv4_prefx,
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    &ett_isis_lsp_clv_mt_reachable_IPv6_prefx,
 
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    &ett_isis_lsp_clv_mt_reachable_IPv6_prefx
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        };
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        proto_register_field_array(proto_isis, hf, array_length(hf));