/* packet-ipxwan.c * Routines for NetWare IPX WAN Protocol * * $Id: packet-ipxwan.c,v 1.1 2003/04/06 02:32:38 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include "packet-ipx.h" /* * See RFC 1362 for version 1 of this protocol; see the NetWare Link * Services Protocol Specification, chapter 3, for version 2. */ static int proto_ipxwan = -1; static int hf_ipxwan_identifier = -1; static int hf_ipxwan_packet_type = -1; static int hf_ipxwan_node_id = -1; static int hf_ipxwan_sequence_number = -1; static int hf_ipxwan_num_options = -1; static int hf_ipxwan_option_num = -1; static int hf_ipxwan_accept_option = -1; static int hf_ipxwan_option_data_len = -1; static int hf_ipxwan_routing_type = -1; static int hf_ipxwan_wan_link_delay = -1; static int hf_ipxwan_common_network_number = -1; static int hf_ipxwan_router_name = -1; static int hf_ipxwan_delay = -1; static int hf_ipxwan_throughput = -1; static int hf_ipxwan_request_size = -1; static int hf_ipxwan_delta_time = -1; static int hf_ipxwan_extended_node_id = -1; static int hf_ipxwan_node_number = -1; static int hf_ipxwan_compression_type = -1; static gint ett_ipxwan = -1; static gint ett_ipxwan_option = -1; static const value_string ipxwan_packet_type_vals[] = { { 0, "Timer Request" }, { 1, "Timer Response" }, { 2, "Information Request" }, { 3, "Information Response" }, { 4, "Throughput Request" }, { 5, "Throughput Response" }, { 6, "Delay Request" }, { 7, "Delay Response" }, { 0xFF, "NAK" }, { 0, NULL } }; #define OPT_ROUTING_TYPE 0x00 #define OPT_RIP_SAP_INFO_EXCHANGE 0x01 #define OPT_NLSP_INFORMATION 0x02 #define OPT_NLSP_RAW_THROUGHPUT_DATA 0x03 #define OPT_EXTENDED_NODE_ID 0x04 #define OPT_NODE_NUMBER 0x05 #define OPT_COMPRESSION 0x80 #define OPT_PAD 0xFF static const value_string ipxwan_option_num_vals[] = { { OPT_ROUTING_TYPE, "Routing Type" }, { OPT_RIP_SAP_INFO_EXCHANGE, "RIP/SAP Info Exchange" }, { OPT_NLSP_INFORMATION, "NLSP Information" }, { OPT_NLSP_RAW_THROUGHPUT_DATA, "NLSP Raw Throughput Data" }, { OPT_EXTENDED_NODE_ID, "Extended Node ID" }, { OPT_NODE_NUMBER, "Node Number" }, { OPT_COMPRESSION, "Compression" }, { OPT_PAD, "Pad" }, { 0, NULL } }; static const value_string ipxwan_accept_option_vals[] = { { 0, "No" }, { 1, "Yes" }, { 3, "Not Appplicable" }, { 0, NULL } }; static const value_string ipxwan_routing_type_vals[] = { { 0, "RIP" }, { 1, "NLSP" }, { 2, "Unnumbered RIP" }, { 3, "On-demand, static routing" }, { 4, "Client-router connection" }, { 0, NULL } }; #define COMP_TYPE_TELEBIT 0 static const value_string ipxwan_compression_type_vals[] = { { COMP_TYPE_TELEBIT, "Telebit" }, { 0, NULL } }; static void dissect_ipxwan(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_item *ti; proto_tree *ipxwan_tree = NULL; int offset = 0; guint8 packet_type; guint8 num_options; guint8 option_number; proto_tree *option_tree; guint16 option_data_len; guint16 wan_link_delay; guint32 delay; guint32 throughput; guint32 delta_time; guint8 compression_type; if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPX WAN"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); if (tree) { ti = proto_tree_add_item(tree, proto_ipxwan, tvb, 0, -1, FALSE); ipxwan_tree = proto_item_add_subtree(ti, ett_ipxwan); } if (tree) { proto_tree_add_item(ipxwan_tree, hf_ipxwan_identifier, tvb, offset, 4, FALSE); } offset += 4; packet_type = tvb_get_guint8(tvb, offset); if (check_col(pinfo->cinfo, COL_INFO)) { col_add_str(pinfo->cinfo, COL_INFO, val_to_str(packet_type, ipxwan_packet_type_vals, "Unknown packet type %u")); } if (tree) { proto_tree_add_uint(ipxwan_tree, hf_ipxwan_packet_type, tvb, offset, 1, packet_type); offset += 1; proto_tree_add_item(ipxwan_tree, hf_ipxwan_node_id, tvb, offset, 4, FALSE); offset += 4; proto_tree_add_item(ipxwan_tree, hf_ipxwan_sequence_number, tvb, offset, 1, FALSE); offset += 1; num_options = tvb_get_guint8(tvb, offset); proto_tree_add_uint(ipxwan_tree, hf_ipxwan_num_options, tvb, offset, 1, num_options); offset += 1; while (num_options != 0) { option_number = tvb_get_guint8(tvb, offset); ti = proto_tree_add_text(ipxwan_tree, tvb, offset, -1, "Option: %s", val_to_str(option_number, ipxwan_option_num_vals, "Unknown (%u)")); option_tree = proto_item_add_subtree(ti, ett_ipxwan_option); proto_tree_add_uint(option_tree, hf_ipxwan_option_num, tvb, offset, 1, option_number); offset += 1; proto_tree_add_item(option_tree, hf_ipxwan_accept_option, tvb, offset, 1, FALSE); offset += 1; option_data_len = tvb_get_ntohs(tvb, offset); proto_tree_add_uint(option_tree, hf_ipxwan_option_data_len, tvb, offset, 2, option_data_len); offset += 2; proto_item_set_len(ti, option_data_len+4); switch (option_number) { case OPT_ROUTING_TYPE: if (option_data_len != 1) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 1", option_data_len); } else { proto_tree_add_item(option_tree, hf_ipxwan_routing_type, tvb, offset, 1, FALSE); } break; case OPT_RIP_SAP_INFO_EXCHANGE: if (option_data_len != 54) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 54", option_data_len); } else { wan_link_delay = tvb_get_ntohs(tvb, offset); proto_tree_add_uint_format(option_tree, hf_ipxwan_wan_link_delay, tvb, offset, 2, wan_link_delay, "WAN Link Delay: %ums", wan_link_delay); proto_tree_add_item(option_tree, hf_ipxwan_common_network_number, tvb, offset+2, 4, FALSE); proto_tree_add_item(option_tree, hf_ipxwan_router_name, tvb, offset+6, 48, FALSE); } break; case OPT_NLSP_INFORMATION: if (option_data_len != 8) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 8", option_data_len); } else { delay = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format(option_tree, hf_ipxwan_delay, tvb, offset, 4, delay, "Delay: %uus", delay); throughput = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format(option_tree, hf_ipxwan_throughput, tvb, offset, 4, throughput, "Throughput: %uus", throughput); } break; case OPT_NLSP_RAW_THROUGHPUT_DATA: if (option_data_len != 8) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 8", option_data_len); } else { proto_tree_add_item(option_tree, hf_ipxwan_request_size, tvb, offset, 4, FALSE); delta_time = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format(option_tree, hf_ipxwan_delta_time, tvb, offset, 4, delta_time, "Delta Time: %uus", delta_time); } break; case OPT_EXTENDED_NODE_ID: if (option_data_len != 4) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 4", option_data_len); } else { proto_tree_add_item(option_tree, hf_ipxwan_extended_node_id, tvb, offset, 4, FALSE); } break; case OPT_NODE_NUMBER: if (option_data_len != 6) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be 6", option_data_len); } else { proto_tree_add_item(option_tree, hf_ipxwan_node_number, tvb, offset, 6, FALSE); } break; case OPT_COMPRESSION: if (option_data_len < 1) { proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Bogus length: %u, should be >= 1", option_data_len); } else { compression_type = tvb_get_guint8(tvb, offset); proto_tree_add_uint(option_tree, hf_ipxwan_compression_type, tvb, offset, 1, compression_type); switch (compression_type) { case COMP_TYPE_TELEBIT: if (option_data_len < 3) { proto_tree_add_text(option_tree, tvb, offset+1, option_data_len-1, "Bogus length: %u, should be >= 3", option_data_len); } else { proto_tree_add_text( option_tree, tvb, offset+1, 1, "Compression options: 0x%02x", tvb_get_guint8(tvb, offset+1)); proto_tree_add_text( option_tree, tvb, offset+2, 1, "Number of compression slots: %u", tvb_get_guint8(tvb, offset+2)); } break; default: proto_tree_add_text(option_tree, tvb, offset+1, option_data_len-1, "Option parameters"); break; } } break; case OPT_PAD: proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Padding"); break; default: proto_tree_add_text(option_tree, tvb, offset, option_data_len, "Option value"); break; } offset += option_data_len; num_options--; } } } void proto_register_ipxwan(void) { static hf_register_info hf[] = { { &hf_ipxwan_identifier, { "Identifier", "ipxwan.identifier", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_packet_type, { "Packet Type", "ipxwan.packet_type", FT_UINT8, BASE_DEC, VALS(ipxwan_packet_type_vals), 0x0, "", HFILL }}, { &hf_ipxwan_node_id, { "Node ID", "ipxwan.node_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_sequence_number, { "Sequence Number", "ipxwan.sequence_number", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_num_options, { "Number of Options", "ipxwan.num_options", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_option_num, { "Option Number", "ipxwan.option_num", FT_UINT8, BASE_HEX, VALS(ipxwan_option_num_vals), 0x0, "", HFILL }}, { &hf_ipxwan_accept_option, { "Accept Option", "ipxwan.accept_option", FT_UINT8, BASE_DEC, VALS(ipxwan_accept_option_vals), 0x0, "", HFILL }}, { &hf_ipxwan_option_data_len, { "Option Data Length", "ipxwan.option_data_len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_routing_type, { "Routing Type", "ipxwan.routing_type", FT_UINT8, BASE_DEC, VALS(ipxwan_routing_type_vals), 0x0, "", HFILL }}, { &hf_ipxwan_wan_link_delay, { "WAN Link Delay", "ipxwan.rip_sap_info_exchange.wan_link_delay", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_common_network_number, { "Common Network Number", "ipxwan.rip_sap_info_exchange.common_network_number", FT_IPXNET, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_router_name, { "Router Name", "ipxwan.rip_sap_info_exchange.router_name", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_delay, { "Delay", "ipxwan.nlsp_information.delay", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_throughput, { "Throughput", "ipxwan.nlsp_information.throughput", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_request_size, { "Request Size", "ipxwan.nlsp_raw_throughput_data.request_size", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_delta_time, { "Delta Time", "ipxwan.nlsp_raw_throughput_data.delta_time", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_extended_node_id, { "Extended Node ID", "ipxwan.extended_node_id", FT_IPXNET, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_node_number, { "Node Number", "ipxwan.node_number", FT_ETHER, BASE_NONE, NULL, 0x0, "", HFILL }}, { &hf_ipxwan_compression_type, { "Compression Type", "ipxwan.compression.type", FT_UINT8, BASE_DEC, VALS(ipxwan_compression_type_vals), 0x0, "", HFILL }}, }; static gint *ett[] = { &ett_ipxwan, &ett_ipxwan_option, }; proto_ipxwan = proto_register_protocol("IPX WAN", "IPX WAN", "ipxwan"); proto_register_field_array(proto_ipxwan, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_ipxwan(void) { dissector_handle_t ipxwan_handle; ipxwan_handle = create_dissector_handle(dissect_ipxwan, proto_ipxwan); dissector_add("ipx.socket", IPX_SOCKET_IPXWAN, ipxwan_handle); }