/* packet-netdump.c * Routines for Netdump dissection * Copyright 2009, Neil Horman * * Wireshark - 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. */ #include "config.h" #include #include void proto_register_netdump(void); void proto_reg_handoff_netdump(void); /* Initialize the protocol and registered fields */ static int proto_netdump = -1; static int hf_netdump_magic_number = -1; static int hf_netdump_seq_nr = -1; static int hf_netdump_command = -1; static int hf_netdump_from = -1; static int hf_netdump_to = -1; static int hf_netdump_payload = -1; static int hf_netdump_code = -1; static int hf_netdump_info = -1; static int hf_netdump_version = -1; /* Global sample port pref */ static guint gPORT_PREF = 0; /* Initialize the subtree pointers */ static gint ett_netdump = -1; static const value_string command_names[] = { { 0, "COMM_NONE" }, { 1, "COMM_SEND_MEM" }, { 2, "COMM_EXIT" }, { 3, "COMM_REBOOT" }, { 4, "COMM_HELLO" }, { 5, "COMM_GET_NR_PAGES" }, { 6, "COMM_GET_PAGE_SIZE" }, { 7, "COMM_START_NETDUMP_ACK" }, { 8, "COMM_GET_REGS" }, { 9, "COMM_SHOW_STATE" }, { 0, NULL } }; static const value_string reply_code_names[] = { { 0, "REPLY_NONE" }, { 1, "REPLY_ERROR" }, { 2, "REPLY_LOG" }, { 3, "REPLY_MEM" }, { 4, "REPLY_RESERVED" }, { 5, "REPLY_HELLO" }, { 6, "REPLY_NR_PAGES" }, { 7, "REPLY_PAGE_SIZE" }, { 8, "REPLY_START_NETDUMP" }, { 9, "REPLY_END_NETDUMP" }, { 10, "REPLY_REGS" }, { 11, "REPLY_MAGIC" }, { 12, "REPLY_SHOW_STATE" }, { 0, NULL } }; /* Code to actually dissect the packets */ static int dissect_netdump(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { col_set_str(pinfo->cinfo, COL_PROTOCOL, "Netdump"); /* Clear out stuff in the info column */ col_clear(pinfo->cinfo, COL_INFO); if (tree) { /* we are being asked for details */ proto_item *ti = NULL; proto_tree *netdump_tree = NULL; ti = proto_tree_add_item(tree, proto_netdump, tvb, 0, -1, ENC_NA); netdump_tree = proto_item_add_subtree(ti, ett_netdump); if (tvb_reported_length(tvb) == 24) { /* Its a request format packet */ proto_tree_add_item(netdump_tree, hf_netdump_magic_number, tvb, 0, 8, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_seq_nr, tvb, 8, 4, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_command, tvb, 12, 4, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_from, tvb, 16, 4, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_to, tvb, 20, 4, ENC_BIG_ENDIAN); } else { /* Its a reply packet */ proto_tree_add_item(netdump_tree, hf_netdump_version, tvb, 0, 1, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_seq_nr, tvb, 1, 4, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_code, tvb, 5, 4, ENC_BIG_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_info, tvb, 9, 4, ENC_LITTLE_ENDIAN); proto_tree_add_item(netdump_tree, hf_netdump_payload, tvb, 13, -1, ENC_NA); } } return tvb_captured_length(tvb); } void proto_register_netdump(void) { module_t *netdump_module; /* Setup protocol subtree array */ static gint *ett[] = { &ett_netdump }; static hf_register_info hf[] = { { &hf_netdump_magic_number, { "Netdump Magic Number", "netdump.magic", FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_netdump_seq_nr, {"Netdump seq number", "netdump.seq_nr", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL} }, { &hf_netdump_command, {"Netdump command", "netdump.command", FT_UINT32, BASE_DEC, VALS(command_names), 0x0, NULL, HFILL} }, { &hf_netdump_from, {"Netdump from val", "netdump.from", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL} }, { &hf_netdump_to, {"Netdump to val", "netdump.to", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL} }, { &hf_netdump_code, {"Netdump code", "netdump.code", FT_UINT32, BASE_DEC, VALS(reply_code_names), 0x0, NULL, HFILL} }, { &hf_netdump_info, {"Netdump info", "netdump.info", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL} }, { &hf_netdump_payload, {"Netdump payload", "netdump.payload", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL} }, { &hf_netdump_version, {"Netdump version", "netdump.version", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL} } }; proto_netdump = proto_register_protocol ( "Netdump Protocol", /* name */ "Netdump", /* short name */ "netdump" /* abbrev */ ); proto_register_field_array(proto_netdump, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); netdump_module = prefs_register_protocol(proto_netdump, proto_reg_handoff_netdump); /* Register a sample port preference */ prefs_register_uint_preference(netdump_module, "udp.port", "Netdump UDP port", "port if other than the default", 10, &gPORT_PREF); } void proto_reg_handoff_netdump(void) { static gboolean initalized = FALSE; static dissector_handle_t netdump_handle; static int CurrentPort; if (!initalized) { netdump_handle = create_dissector_handle(dissect_netdump, proto_netdump); dissector_add_for_decode_as("udp.port", netdump_handle); initalized = TRUE; } else { if (CurrentPort != 0) dissector_delete_uint("udp.port", CurrentPort, netdump_handle); } CurrentPort = gPORT_PREF; if (CurrentPort != 0) dissector_add_uint("udp.port", CurrentPort, netdump_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 8 * tab-width: 8 * indent-tabs-mode: t * End: * * vi: set shiftwidth=8 tabstop=8 noexpandtab: * :indentSize=8:tabSize=8:noTabs=false: */