/* packet-scriptingservice.c * Routines for the Scripting Service Protocol, a load distribution application * of the rsplib RSerPool implementation * http://tdrwww.iem.uni-due.de/dreibholz/rserpool/ * * Copyright 2008 by Thomas Dreibholz * * $Id$ * * 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 #define SSPROTOCOL_PAYLOAD_PROTOCOL_ID 0x29097604 /* Initialize the protocol and registered fields */ static int proto_ssprotocol = -1; static int hf_message_type = -1; static int hf_message_flags = -1; static int hf_message_length = -1; static int hf_message_status = -1; static int hf_message_data = -1; /* Initialize the subtree pointers */ static gint ett_ssprotocol = -1; static void dissect_ssprotocol_message(tvbuff_t *, packet_info *, proto_tree *); /* Dissectors for messages. This is specific to ScriptingServiceProtocol */ #define MESSAGE_TYPE_LENGTH 1 #define MESSAGE_FLAGS_LENGTH 1 #define MESSAGE_LENGTH_LENGTH 2 #define MESSAGE_STATUS_LENGTH 4 #define MESSAGE_TYPE_OFFSET 0 #define MESSAGE_FLAGS_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH) #define MESSAGE_LENGTH_OFFSET (MESSAGE_FLAGS_OFFSET + MESSAGE_FLAGS_LENGTH) #define MESSAGE_STATUS_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH) #define MESSAGE_DATA_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH) #define SS_READY_TYPE 1 #define SS_UPLOAD_TYPE 2 #define SS_DOWNLOAD_TYPE 3 #define SS_KEEPALIVE_TYPE 4 #define SS_KAEEPALIVE_ACK_TYPE 5 #define SS_STATUS_TYPE 6 static const value_string message_type_values[] = { { SS_READY_TYPE, "Ready" }, { SS_UPLOAD_TYPE, "Upload" }, { SS_DOWNLOAD_TYPE, "Download" }, { SS_KEEPALIVE_TYPE, "Keep-Alive" }, { SS_KAEEPALIVE_ACK_TYPE, "Keep-Alive Ack" }, { SS_STATUS_TYPE, "Status" }, { 0, NULL } }; static void dissect_ssprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *ssprotocol_tree) { guint8 type; guint16 data_length; type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET); if (pinfo && (check_col(pinfo->cinfo, COL_INFO))) { col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, message_type_values, "Unknown SSP type")); } proto_tree_add_item(ssprotocol_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, FALSE); proto_tree_add_item(ssprotocol_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, FALSE); proto_tree_add_item(ssprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, FALSE); switch (type) { case SS_KAEEPALIVE_ACK_TYPE: case SS_STATUS_TYPE: proto_tree_add_item(ssprotocol_tree, hf_message_status, message_tvb, MESSAGE_STATUS_OFFSET, MESSAGE_STATUS_LENGTH, FALSE); break; case SS_UPLOAD_TYPE: case SS_DOWNLOAD_TYPE: data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - 4; if (data_length > 0) { proto_tree_add_item(ssprotocol_tree, hf_message_data, message_tvb, MESSAGE_DATA_OFFSET, data_length, FALSE); } break; } } static int dissect_ssprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree) { proto_item *ssprotocol_item; proto_tree *ssprotocol_tree; /* pinfo is NULL only if dissect_ssprotocol_message is called from dissect_error cause */ if (pinfo && (check_col(pinfo->cinfo, COL_PROTOCOL))) col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSP"); /* In the interest of speed, if "tree" is NULL, don't do any work not necessary to generate protocol tree items. */ if (tree) { /* create the ssprotocol protocol tree */ ssprotocol_item = proto_tree_add_item(tree, proto_ssprotocol, message_tvb, 0, -1, FALSE); ssprotocol_tree = proto_item_add_subtree(ssprotocol_item, ett_ssprotocol); } else { ssprotocol_tree = NULL; }; /* dissect the message */ dissect_ssprotocol_message(message_tvb, pinfo, ssprotocol_tree); return(TRUE); } /* Register the protocol */ void proto_register_ssprotocol(void) { /* Setup list of header fields */ static hf_register_info hf[] = { { &hf_message_type, { "Type", "ssprotocol.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, "", HFILL } }, { &hf_message_flags, { "Flags", "ssprotocol.message_flags", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } }, { &hf_message_length, { "Length", "ssprotocol.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, { &hf_message_status, { "Status", "ssprotocol.message_status", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, { &hf_message_data, { "Data", "ssprotocol.message_data", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL } } }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_ssprotocol }; /* Register the protocol name and description */ proto_ssprotocol = proto_register_protocol("Scripting Service Protocol", "SSP", "ssp"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_ssprotocol, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_ssprotocol(void) { dissector_handle_t ssprotocol_handle; ssprotocol_handle = new_create_dissector_handle(dissect_ssprotocol, proto_ssprotocol); dissector_add("sctp.ppi", SSPROTOCOL_PAYLOAD_PROTOCOL_ID, ssprotocol_handle); }