diff options
| -rw-r--r-- | AUTHORS | 4 | ||||
| -rw-r--r-- | epan/dissectors/packet-netdump.c | 239 |
2 files changed, 243 insertions, 0 deletions
@@ -2797,6 +2797,10 @@ Johnny Mitrevski <mitrevj [AT] hotmail.com> { BSSAP LE Dissector } +Neil Horman <nhorman [AT] tuxdriver.com> { + Netdump dissector +} + and by: Pavel Roskin <proski [AT] gnu.org> diff --git a/epan/dissectors/packet-netdump.c b/epan/dissectors/packet-netdump.c new file mode 100644 index 0000000000..58fa00e7f8 --- /dev/null +++ b/epan/dissectors/packet-netdump.c @@ -0,0 +1,239 @@ +/* packet-netdump.c + * Routines for Netdump dissection + * Copyright 2009, Neil Horman <nhorman@tuxdriver.com> + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * 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. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> + +#include <epan/packet.h> +#include <epan/prefs.h> + +/* forward reference */ +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 void +dissect_netdump(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + + /* Check that there's enough data */ + if (tvb_reported_length(tvb) == 0) + return; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Netdump"); + } + /* Clear out stuff in the info column */ + if (check_col(pinfo->cinfo,COL_INFO)) { + 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, FALSE); + 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, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_seq_nr, tvb, 8, 4, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_command, tvb, 12, 4, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_from, tvb, 16, 4, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_to, tvb, 20, 4, FALSE); + } else { + /* Its a reply packet */ + proto_tree_add_item(netdump_tree, hf_netdump_version, tvb, 0, 1, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_seq_nr, tvb, 1, 4, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_code, tvb, 5, 4, FALSE); + proto_tree_add_item(netdump_tree, hf_netdump_info, tvb, 9, 4, TRUE); + proto_tree_add_item(netdump_tree, hf_netdump_payload, tvb, 13, -1, FALSE); + } + } +} + +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_HEX, + 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_handle("udp.port", netdump_handle); /* For Decode As */ + initalized = TRUE; + } else { + if (CurrentPort != 0) + dissector_delete("udp.port", CurrentPort, netdump_handle); + } + + CurrentPort = gPORT_PREF; + + if (CurrentPort != 0) + dissector_add("udp.port", CurrentPort, netdump_handle); +} + |