forked from osmocom/wireshark
f3d59ba1fe
svn path=/trunk/; revision=27994
175 lines
6.3 KiB
C
175 lines
6.3 KiB
C
/* packet-scriptingservice.c
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* Routines for the Scripting Service Protocol, a load distribution application
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* of the rsplib RSerPool implementation
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* http://tdrwww.iem.uni-due.de/dreibholz/rserpool/
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*
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* Copyright 2008 by Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <epan/packet.h>
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#define SSPROTOCOL_PAYLOAD_PROTOCOL_ID 0x29097604
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/* Initialize the protocol and registered fields */
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static int proto_ssprotocol = -1;
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static int hf_message_type = -1;
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static int hf_message_flags = -1;
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static int hf_message_length = -1;
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static int hf_message_status = -1;
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static int hf_message_data = -1;
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/* Initialize the subtree pointers */
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static gint ett_ssprotocol = -1;
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static void
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dissect_ssprotocol_message(tvbuff_t *, packet_info *, proto_tree *);
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/* Dissectors for messages. This is specific to ScriptingServiceProtocol */
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#define MESSAGE_TYPE_LENGTH 1
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#define MESSAGE_FLAGS_LENGTH 1
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#define MESSAGE_LENGTH_LENGTH 2
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#define MESSAGE_STATUS_LENGTH 4
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#define MESSAGE_TYPE_OFFSET 0
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#define MESSAGE_FLAGS_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
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#define MESSAGE_LENGTH_OFFSET (MESSAGE_FLAGS_OFFSET + MESSAGE_FLAGS_LENGTH)
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#define MESSAGE_STATUS_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define MESSAGE_DATA_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define SS_READY_TYPE 1
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#define SS_UPLOAD_TYPE 2
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#define SS_DOWNLOAD_TYPE 3
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#define SS_KEEPALIVE_TYPE 4
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#define SS_KAEEPALIVE_ACK_TYPE 5
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#define SS_STATUS_TYPE 6
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static const value_string message_type_values[] = {
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{ SS_READY_TYPE, "Ready" },
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{ SS_UPLOAD_TYPE, "Upload" },
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{ SS_DOWNLOAD_TYPE, "Download" },
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{ SS_KEEPALIVE_TYPE, "Keep-Alive" },
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{ SS_KAEEPALIVE_ACK_TYPE, "Keep-Alive Ack" },
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{ SS_STATUS_TYPE, "Status" },
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{ 0, NULL }
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};
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static void
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dissect_ssprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *ssprotocol_tree)
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{
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guint8 type;
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guint16 data_length;
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type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET);
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if (pinfo && (check_col(pinfo->cinfo, COL_INFO))) {
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, message_type_values, "Unknown SSP type"));
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}
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proto_tree_add_item(ssprotocol_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, FALSE);
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proto_tree_add_item(ssprotocol_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, FALSE);
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proto_tree_add_item(ssprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, FALSE);
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switch (type) {
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case SS_KAEEPALIVE_ACK_TYPE:
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case SS_STATUS_TYPE:
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proto_tree_add_item(ssprotocol_tree, hf_message_status, message_tvb, MESSAGE_STATUS_OFFSET, MESSAGE_STATUS_LENGTH, FALSE);
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break;
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case SS_UPLOAD_TYPE:
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case SS_DOWNLOAD_TYPE:
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data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - 4;
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if (data_length > 0) {
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proto_tree_add_item(ssprotocol_tree, hf_message_data, message_tvb, MESSAGE_DATA_OFFSET, data_length, FALSE);
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}
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break;
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}
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}
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static int
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dissect_ssprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ssprotocol_item;
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proto_tree *ssprotocol_tree;
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/* pinfo is NULL only if dissect_ssprotocol_message is called from dissect_error cause */
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if (pinfo && (check_col(pinfo->cinfo, COL_PROTOCOL)))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSP");
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/* In the interest of speed, if "tree" is NULL, don't do any work not
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necessary to generate protocol tree items. */
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if (tree) {
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/* create the ssprotocol protocol tree */
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ssprotocol_item = proto_tree_add_item(tree, proto_ssprotocol, message_tvb, 0, -1, FALSE);
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ssprotocol_tree = proto_item_add_subtree(ssprotocol_item, ett_ssprotocol);
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} else {
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ssprotocol_tree = NULL;
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};
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/* dissect the message */
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dissect_ssprotocol_message(message_tvb, pinfo, ssprotocol_tree);
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return(TRUE);
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}
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/* Register the protocol */
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void
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proto_register_ssprotocol(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_message_type, { "Type", "ssprotocol.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, "", HFILL } },
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{ &hf_message_flags, { "Flags", "ssprotocol.message_flags", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL } },
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{ &hf_message_length, { "Length", "ssprotocol.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
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{ &hf_message_status, { "Status", "ssprotocol.message_status", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
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{ &hf_message_data, { "Data", "ssprotocol.message_data", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL } }
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_ssprotocol
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};
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/* Register the protocol name and description */
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proto_ssprotocol = proto_register_protocol("Scripting Service Protocol", "SSP", "ssp");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_ssprotocol, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_ssprotocol(void)
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{
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dissector_handle_t ssprotocol_handle;
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ssprotocol_handle = new_create_dissector_handle(dissect_ssprotocol, proto_ssprotocol);
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dissector_add("sctp.ppi", SSPROTOCOL_PAYLOAD_PROTOCOL_ID, ssprotocol_handle);
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}
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