/* packet-pingpongprotocol.c * Routines for the Ping Pong Protocol, a test application of the * rsplib RSerPool implementation * http://www.tdr.wiwi.uni-due.de/forschung/forschungsprojekte/reliable-server-pooling// * * Copyright 2006 by Thomas Dreibholz * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * Copied from README.developer * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #define PINGPONGPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY 0x29097602 void proto_register_pingpongprotocol(void); void proto_reg_handoff_pingpongprotocol(void); /* Initialize the protocol and registered fields */ static int proto_pingpongprotocol = -1; static int hf_message_type = -1; static int hf_message_flags = -1; static int hf_message_length = -1; static int hf_ping_messageno = -1; static int hf_ping_data = -1; static int hf_pong_messageno = -1; static int hf_pong_replyno = -1; static int hf_pong_data = -1; /* Initialize the subtree pointers */ static gint ett_pingpongprotocol = -1; /* Dissectors for messages. This is specific to PingPongProtocol */ #define MESSAGE_TYPE_LENGTH 1 #define MESSAGE_FLAGS_LENGTH 1 #define MESSAGE_LENGTH_LENGTH 2 #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_VALUE_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH) #define PING_MESSAGENO_LENGTH 8 #define PING_MESSAGENO_OFFSET MESSAGE_VALUE_OFFSET #define PING_DATA_OFFSET (PING_MESSAGENO_OFFSET + PING_MESSAGENO_LENGTH) #define PONG_MESSAGENO_LENGTH 8 #define PONG_REPLYNO_LENGTH 8 #define PONG_MESSAGENO_OFFSET MESSAGE_VALUE_OFFSET #define PONG_REPLYNO_OFFSET (PONG_MESSAGENO_OFFSET + PONG_MESSAGENO_LENGTH) #define PONG_DATA_OFFSET (PONG_REPLYNO_OFFSET + PONG_REPLYNO_LENGTH) #define PINGPONG_PING_MESSAGE_TYPE 0x01 #define PINGPONG_PONG_MESSAGE_TYPE 0x02 static const value_string message_type_values[] = { { PINGPONG_PONG_MESSAGE_TYPE, "PingPongProtocol Pong" }, { PINGPONG_PING_MESSAGE_TYPE, "PingPongProtocol Ping" }, { 0, NULL } }; static void dissect_pingpongprotocol_ping_message(tvbuff_t *message_tvb, proto_tree *message_tree) { guint16 ping_data_length; proto_tree_add_item(message_tree, hf_ping_messageno, message_tvb, PING_MESSAGENO_OFFSET, PING_MESSAGENO_LENGTH, ENC_BIG_ENDIAN); ping_data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - PING_DATA_OFFSET; if (ping_data_length > 0) proto_tree_add_item(message_tree, hf_ping_data, message_tvb, PING_DATA_OFFSET, ping_data_length, ENC_NA); } static void dissect_pingpongprotocol_pong_message(tvbuff_t *message_tvb, proto_tree *message_tree) { guint16 pong_data_length; proto_tree_add_item(message_tree, hf_pong_messageno, message_tvb, PONG_MESSAGENO_OFFSET, PONG_MESSAGENO_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(message_tree, hf_pong_replyno, message_tvb, PONG_REPLYNO_OFFSET, PONG_REPLYNO_LENGTH, ENC_BIG_ENDIAN); pong_data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - PONG_DATA_OFFSET; if (pong_data_length > 0) { proto_tree_add_item(message_tree, hf_pong_data, message_tvb, PONG_DATA_OFFSET, pong_data_length, ENC_NA); } } static void dissect_pingpongprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *pingpongprotocol_tree) { guint8 type; type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET); col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(type, message_type_values, "Unknown PingPongProtocol type")); proto_tree_add_item(pingpongprotocol_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(pingpongprotocol_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN); proto_tree_add_item(pingpongprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN); switch (type) { case PINGPONG_PING_MESSAGE_TYPE: dissect_pingpongprotocol_ping_message(message_tvb, pingpongprotocol_tree); break; case PINGPONG_PONG_MESSAGE_TYPE: dissect_pingpongprotocol_pong_message(message_tvb, pingpongprotocol_tree); break; } } static int dissect_pingpongprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_item *pingpongprotocol_item; proto_tree *pingpongprotocol_tree; col_set_str(pinfo->cinfo, COL_PROTOCOL, "PingPongProtocol"); /* 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 pingpongprotocol protocol tree */ pingpongprotocol_item = proto_tree_add_item(tree, proto_pingpongprotocol, message_tvb, 0, -1, ENC_NA); pingpongprotocol_tree = proto_item_add_subtree(pingpongprotocol_item, ett_pingpongprotocol); } else { pingpongprotocol_tree = NULL; }; /* dissect the message */ dissect_pingpongprotocol_message(message_tvb, pinfo, pingpongprotocol_tree); return(TRUE); } /* Register the protocol with Wireshark */ void proto_register_pingpongprotocol(void) { /* Setup list of header fields */ static hf_register_info hf[] = { { &hf_message_type, { "Type", "pingpongprotocol.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } }, { &hf_message_flags, { "Flags", "pingpongprotocol.message_flags", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_message_length, { "Length", "pingpongprotocol.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_ping_messageno, { "MessageNo", "pingpongprotocol.ping_messageno", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_ping_data, { "Ping_Data", "pingpongprotocol.ping_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, { &hf_pong_messageno, { "MessageNo", "pingpongprotocol.pong_messageno", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_pong_replyno, { "ReplyNo", "pingpongprotocol.pong_replyno", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_pong_data, { "Pong_Data", "pingpongprotocol.pong_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_pingpongprotocol }; /* Register the protocol name and description */ proto_pingpongprotocol = proto_register_protocol("Ping Pong Protocol", "PingPongProtocol", "pingpongprotocol"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_pingpongprotocol, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_pingpongprotocol(void) { dissector_handle_t pingpongprotocol_handle; pingpongprotocol_handle = create_dissector_handle(dissect_pingpongprotocol, proto_pingpongprotocol); dissector_add_uint("sctp.ppi", PINGPONGPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY, pingpongprotocol_handle); dissector_add_uint("sctp.ppi", PPP_PAYLOAD_PROTOCOL_ID, pingpongprotocol_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local Variables: * c-basic-offset: 2 * tab-width: 8 * indent-tabs-mode: nil * End: * * ex: set shiftwidth=2 tabstop=8 expandtab: * :indentSize=2:tabSize=8:noTabs=true: */