/* packet-ddtp.c * Routines for DDTP (Dynamic DNS Tools Protocol) packet disassembly * see http://ddt.sourceforge.net/ * Olivier Abad * * $Id: packet-ddtp.c,v 1.23 2002/09/01 14:30:30 oabad Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs * Copyright 2000 * * 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 #include "packet-ddtp.h" static int proto_ddtp = -1; static int hf_ddtp_version = -1; static int hf_ddtp_encrypt = -1; static int hf_ddtp_hostid = -1; static int hf_ddtp_msgtype = -1; static int hf_ddtp_opcode = -1; static int hf_ddtp_ipaddr = -1; static int hf_ddtp_status = -1; static int ett_ddtp = -1; #define UDP_PORT_DDTP 1052 static const value_string vals_ddtp_version[] = { { DDTP_VERSION_ERROR, "Protocol Error" }, { DDTP_VERSION_4, "4" }, { DDTP_VERSION_5, "5" }, { 0, NULL} }; static const value_string vals_ddtp_encrypt[] = { { DDTP_ENCRYPT_ERROR, "Encryption Error" }, { DDTP_ENCRYPT_PLAINTEXT, "Plain text" }, { DDTP_ENCRYPT_BLOWFISH, "Blowfish" }, { 0, NULL} }; static const value_string vals_ddtp_msgtype[] = { { DDTP_MESSAGE_ERROR, "Message Error" }, { DDTP_UPDATE_QUERY, "Update Query" }, { DDTP_UPDATE_REPLY, "Update Reply" }, { DDTP_ALIVE_QUERY, "Alive Query" }, { DDTP_ALIVE_REPLY, "Alive Reply" }, { 0, NULL} }; static const value_string vals_ddtp_opcode[] = { { DDTP_MARK_ONLINE, "Mark online" }, { DDTP_MARK_OFFLINE, "Mark offline" }, { 0, NULL} }; static const value_string vals_ddtp_status[] = { { DDTP_UPDATE_SUCCEEDED, "Update succeeded" }, { DDTP_UPDATE_FAILED, "Update failed" }, { DDTP_INVALID_PASSWORD, "Invalid password" }, { DDTP_INVALID_ACCOUNT, "Invalid account" }, { DDTP_INVALID_OPCODE, "Invalid opcode" }, { 0, NULL} }; static void dissect_ddtp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *ddtp_tree = NULL; proto_item *ti; if (check_col(pinfo->cinfo, COL_PROTOCOL)) { /* Indicate what kind of message this is. */ col_set_str (pinfo->cinfo, COL_PROTOCOL, "DDTP"); } if (check_col(pinfo->cinfo, COL_INFO)) { /* In case we throw an exception below. */ col_clear (pinfo->cinfo, COL_INFO); } if (tree) { ti = proto_tree_add_item(tree, proto_ddtp, tvb, 0, -1, FALSE); ddtp_tree = proto_item_add_subtree(ti, ett_ddtp); proto_tree_add_item(ddtp_tree, hf_ddtp_version, tvb, 0, 4, FALSE); proto_tree_add_item(ddtp_tree, hf_ddtp_encrypt, tvb, 4, 4, FALSE); proto_tree_add_item(ddtp_tree, hf_ddtp_hostid, tvb, 8, 4, FALSE); } if (tvb_get_ntohl(tvb, 4) == DDTP_ENCRYPT_PLAINTEXT) { if (tree) proto_tree_add_item(ddtp_tree, hf_ddtp_msgtype, tvb, 12, 4, FALSE); switch (tvb_get_ntohl(tvb, 12)) { case DDTP_MESSAGE_ERROR : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Message Error"); break; case DDTP_UPDATE_QUERY : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Update Query"); if (tree) { proto_tree_add_item(ddtp_tree, hf_ddtp_opcode, tvb, 16, 4, FALSE); proto_tree_add_item(ddtp_tree, hf_ddtp_ipaddr, tvb, 20, 4, FALSE); } break; case DDTP_UPDATE_REPLY : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Update Reply"); if (tree) { proto_tree_add_item(ddtp_tree, hf_ddtp_status, tvb, 16, 4, FALSE); } break; case DDTP_ALIVE_QUERY : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Alive Query"); if (tree) { proto_tree_add_text(ddtp_tree, tvb, 16, 4, "Dummy : %u", tvb_get_ntohl(tvb, 16)); } break; case DDTP_ALIVE_REPLY : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Alive Reply"); if (tree) { proto_tree_add_text(ddtp_tree, tvb, 16, 4, "Dummy : %u", tvb_get_ntohl(tvb, 16)); } break; default : if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Unknown type"); if (tree) { proto_tree_add_text(ddtp_tree, tvb, 12, 4, "Unknown type : %u", tvb_get_ntohl(tvb, 12)); } } } else { if (check_col(pinfo->cinfo, COL_INFO)) col_set_str (pinfo->cinfo, COL_INFO, "Encrypted payload"); } } void proto_register_ddtp(void) { static hf_register_info hf_ddtp[] = { { &hf_ddtp_version, { "Version", "ddtp.version", FT_UINT32, BASE_DEC, VALS(vals_ddtp_version), 0x0, "Version", HFILL }}, { &hf_ddtp_encrypt, { "Encryption", "ddtp.encrypt", FT_UINT32, BASE_DEC, VALS(vals_ddtp_encrypt), 0x0, "Encryption type", HFILL }}, { &hf_ddtp_hostid, { "Hostid", "ddtp.hostid", FT_UINT32, BASE_DEC, NULL, 0x0, "Host ID", HFILL }}, { &hf_ddtp_msgtype, { "Message type", "ddtp.msgtype", FT_UINT32, BASE_DEC, VALS(vals_ddtp_msgtype), 0x0, "Message Type", HFILL }}, { &hf_ddtp_opcode, { "Opcode", "ddtp.opcode", FT_UINT32, BASE_DEC, VALS(vals_ddtp_opcode), 0x0, "Update query opcode", HFILL }}, { &hf_ddtp_ipaddr, { "IP address", "ddtp.ipaddr", FT_IPv4, BASE_NONE, NULL, 0x0, "IP address", HFILL }}, { &hf_ddtp_status, { "Status", "ddtp.status", FT_UINT32, BASE_DEC, VALS(vals_ddtp_status), 0x0, "Update reply status", HFILL }} }; static gint *ett[] = { &ett_ddtp }; proto_ddtp = proto_register_protocol("Dynamic DNS Tools Protocol", "DDTP", "ddtp"); proto_register_field_array(proto_ddtp, hf_ddtp, array_length(hf_ddtp)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_ddtp(void) { dissector_handle_t ddtp_handle; ddtp_handle = create_dissector_handle(dissect_ddtp, proto_ddtp); dissector_add("udp.port", UDP_PORT_DDTP, ddtp_handle); }