forked from osmocom/wireshark
Dissect the management protocol between 3com Netjack200 devices and the
Windows managment application. svn path=/trunk/; revision=16760
This commit is contained in:
Jörg Mayer
parent
f7b48054f9
commit
e17d206357
2
AUTHORS
2
AUTHORS
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@ -98,6 +98,8 @@ Jörg Mayer <jmayer[AT]loplof.de> {
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Mark last packet of TFTP transfer as such in the Info column
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Dissect both the BOOTP server and client ports as bootp/DHCP
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Fix some small memleaks found by valgrind
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Some Extreme protocols
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Some 3com management protocol
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}
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Martin Maciaszek <fastjack[AT]i-s-o.net> {
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@ -60,6 +60,7 @@ PIDL_DISSECTOR_INCLUDES = \
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# the dissector sources (without any helpers)
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DISSECTOR_SRC = \
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$(PIDL_DISSECTOR_SRC) \
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packet-3com-njack.c \
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packet-3com-xns.c \
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packet-3g-a11.c \
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packet-9p.c \
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@ -0,0 +1,485 @@
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/* packet-3com-njack.c
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* Routines for the disassembly of the 3com NetworkJack management protocol
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*
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* $Id$
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*
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* Copyright 2005 Joerg Mayer (see AUTHORS file)
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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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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/*
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TODO:
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- Are heuristic and static wrappers done right?
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- Find out lots more values :-)
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- Create common code for set and get response tlv decoding
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- Support for other 3com devices that use the same protocol
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Specs:
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No specs available. All knowledge gained by looking at traffic dumps
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Packets to Managementstation: PORT_NJACK1
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Packets to Switch: PORT_NJACK2
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Type 0x07 (set): M -> S, Magic, type, length (16 bit be)
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Type 0x08 (set resp): S -> M, Magic, type, net length (8 bit), result status
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Type 0x0b (get): M -> S, Magic, type, 00 00 63 ff
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Type 0x0c (get resp): S -> M, Magic, type, T(8 bit) L(8 bit) V(L bytes)
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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 <glib.h>
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#include <epan/packet.h>
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/* protocol handles */
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static dissector_handle_t data_handle;
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static int proto_njack = -1;
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/* ett handles */
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static int ett_njack = -1;
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static int ett_njack_getresp_tlv_header = -1;
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static int ett_njack_set_tlv_header = -1;
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/* hf elements */
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static int hf_njack_magic = -1;
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static int hf_njack_type = -1;
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/* type 07: set */
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static int hf_njack_set_length = -1;
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static int hf_njack_set_unknown1 = -1;
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static int hf_njack_set_seqno = -1;
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static int hf_njack_set_unknown2 = -1;
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static int hf_njack_set_data = -1;
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static int hf_njack_set_tlv_type = -1;
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static int hf_njack_set_tlv_length = -1;
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static int hf_njack_set_tlv_data = -1;
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static int hf_njack_set_tlv_typeip = -1;
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static int hf_njack_set_tlv_typestring = -1;
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/* type 08: set result */
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static int hf_njack_setresult = -1;
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/* type 0b: get */
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static int hf_njack_get_data = -1;
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/* type 0c: get response */
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static int hf_njack_getresp_tlv_type = -1;
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static int hf_njack_getresp_tlv_length = -1;
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static int hf_njack_getresp_tlv_data = -1;
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static int hf_njack_getresp_tlv_typeip = -1;
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static int hf_njack_getresp_tlv_typestring = -1;
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#define PROTO_SHORT_NAME "NJACK"
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#define PROTO_LONG_NAME "3com Network Jack"
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#define PORT_NJACK1 5264
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#define PORT_NJACK2 5265
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typedef enum {
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NJACK_TYPE_SET = 0x07,
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NJACK_TYPE_SETRESULT = 0x08,
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NJACK_TYPE_GET = 0x0b,
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NJACK_TYPE_GETRESP = 0x0c
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} njack_type_t;
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static const value_string njack_type_vals[] = {
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{ NJACK_TYPE_SET, "Set"},
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{ NJACK_TYPE_SETRESULT, "Set result"},
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{ NJACK_TYPE_GET, "Get"},
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{ NJACK_TYPE_GETRESP, "Get response"},
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{ 0, NULL }
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};
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typedef enum {
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NJACK_CMD_IPADDRESS = 0x02,
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NJACK_CMD_NETWORK = 0x03,
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NJACK_CMD_MASK = 0x04,
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NJACK_CMD_GROUP = 0x0d,
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NJACK_CMD_LOCATION = 0x0e,
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NJACK_CMD_PORT1 = 0x13,
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NJACK_CMD_PORT2 = 0x14,
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NJACK_CMD_PORT3 = 0x15,
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NJACK_CMD_PORT4 = 0x16,
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NJACK_CMD_PASSWORD = 0x19,
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NJACK_CMD_ROCOMMUNITY = 0x1b,
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NJACK_CMD_IPGATEWAY = 0x20,
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NJACK_CMD_RWCOMMUNITY = 0x25,
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NJACK_CMD_DEVICETYPE = 0x2a,
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NJACK_CMD_SERIALNO = 0x2b,
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NJACK_CMD_ENDOFPACKET = 0xff
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} njack_cmd_type_t;
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static const value_string njack_cmd_vals[] = {
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{ NJACK_CMD_IPADDRESS, "IP address" },
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{ NJACK_CMD_NETWORK, "IP network" },
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{ NJACK_CMD_MASK, "IP netmask" },
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{ NJACK_CMD_GROUP, "Device group" },
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{ NJACK_CMD_LOCATION, "Location" },
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{ NJACK_CMD_PORT1, "Port 1 (??)" },
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{ NJACK_CMD_PORT2, "Port 2 (??)" },
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{ NJACK_CMD_PORT3, "Port 3 (??)" },
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{ NJACK_CMD_PORT4, "Port 4 (??)" },
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{ NJACK_CMD_PASSWORD, "Device password" },
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{ NJACK_CMD_ROCOMMUNITY, "RO community (??)" },
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{ NJACK_CMD_IPGATEWAY, "IP gateway" },
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{ NJACK_CMD_RWCOMMUNITY, "RW community (??)" },
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{ NJACK_CMD_DEVICETYPE, "Device type(??)" },
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{ NJACK_CMD_SERIALNO, "Serial no(??)" },
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{ NJACK_CMD_ENDOFPACKET, "End of packet" },
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{ 0, NULL }
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};
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typedef enum {
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NJACK_SETRESULT_SUCCESS = 0x01,
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NJACK_SETRESULT_FAILAUTH = 0xFD
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} njack_setresult_t;
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static const value_string njack_setresult_vals[] = {
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{ NJACK_SETRESULT_SUCCESS, "Success" },
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{ NJACK_SETRESULT_FAILAUTH, "Failauth" },
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{ 0, NULL }
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};
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static void
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dissect_njack(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti;
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proto_item *tlv_item;
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proto_tree *njack_tree = NULL;
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proto_item *tlv_tree;
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guint32 offset = 0;
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guint8 packet_type;
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guint8 setresult;
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guint8 tlv_type;
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guint8 tlv_length;
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guint16 total_length;
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gboolean last = FALSE;
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packet_type = tvb_get_guint8(tvb, 5);
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_SHORT_NAME);
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if (check_col(pinfo->cinfo, COL_INFO))
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col_add_fstr(pinfo->cinfo, COL_INFO, val_to_str(packet_type,
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njack_type_vals, "Type 0x%02x"));
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if (tree) {
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ti = proto_tree_add_item(tree, proto_njack, tvb, offset, -1,
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FALSE);
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njack_tree = proto_item_add_subtree(ti, ett_njack);
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proto_tree_add_item(njack_tree, hf_njack_magic, tvb, offset, 5,
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FALSE);
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offset += 5;
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proto_tree_add_item(njack_tree, hf_njack_type, tvb, offset, 1,
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FALSE);
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offset += 1;
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switch (packet_type) {
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case NJACK_TYPE_SET:
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/* Type 0x07: S -> M, Magic, type, length (16 bit be) */
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total_length = tvb_get_ntohs(tvb, offset);
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proto_tree_add_item(njack_tree, hf_njack_set_length, tvb, offset,
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2, FALSE);
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offset += 2;
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proto_tree_add_item(njack_tree, hf_njack_set_unknown1, tvb, offset,
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1, FALSE);
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offset += 1;
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proto_tree_add_item(njack_tree, hf_njack_set_seqno, tvb, offset,
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1, FALSE);
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offset += 1;
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proto_tree_add_item(njack_tree, hf_njack_set_unknown2, tvb, offset,
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2, FALSE);
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offset += 2;
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proto_tree_add_item(njack_tree, hf_njack_set_data, tvb, offset,
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16, FALSE);
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offset += 16;
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for (;;) {
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tlv_type = tvb_get_guint8(tvb, offset);
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if (tlv_type == 0xff) {
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proto_tree_add_item(njack_tree, hf_njack_set_tlv_type,
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tvb, offset, 1, FALSE);
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offset += 1;
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break;
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}
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tlv_length = tvb_get_guint8(tvb, offset + 1);
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tlv_item = proto_tree_add_text(njack_tree, tvb,
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offset, tlv_length + 2,
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"T %02x, L %02x: %s",
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tlv_type,
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tlv_length,
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val_to_str(tlv_type, njack_cmd_vals, "Unknown"));
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tlv_tree = proto_item_add_subtree(tlv_item,
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ett_njack_set_tlv_header);
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proto_tree_add_item(tlv_tree, hf_njack_set_tlv_type,
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tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(tlv_tree, hf_njack_set_tlv_length,
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tvb, offset, 1, FALSE);
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offset += 1;
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switch (tlv_type) {
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case 0x02: /* IP address */
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case 0x03: /* Network address */
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case 0x04: /* Network mask */
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case 0x20: /* Default gateway */
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proto_tree_add_item(tlv_tree, hf_njack_set_tlv_typeip,
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tvb, offset, 4, FALSE);
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offset += 4;
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break;
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case 0x0d: /* group name */
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case 0x0e: /* location */
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case 0x19: /* password */
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case 0x1b: /* ro community ? */
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case 0x25: /* rw community ? */
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case 0x2a: /* Device string ? */
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case 0x2b: /* Serialno ? */
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proto_tree_add_item(tlv_tree, hf_njack_set_tlv_typestring,
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tvb, offset, tlv_length, FALSE);
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offset += tlv_length;
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break;
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default:
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if (tlv_length > 0) {
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proto_tree_add_item(tlv_tree, hf_njack_set_tlv_data,
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tvb, offset, tlv_length, FALSE);
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offset += tlv_length;
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}
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break;
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}
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}
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break;
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case NJACK_TYPE_SETRESULT:
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/* Type 0x08: M -> S, Magic, type, setresult (8 bit) */
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setresult = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(njack_tree, hf_njack_setresult, tvb, offset,
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1, FALSE);
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offset += 1;
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if (check_col(pinfo->cinfo, COL_INFO))
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col_append_fstr(pinfo->cinfo, COL_INFO, ": %s",
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val_to_str(setresult, njack_setresult_vals, "[0x%02x]"));
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break;
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case NJACK_TYPE_GET:
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/* Type 0x0b: S -> M, Magic, type, 00 00 63 ff */
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proto_tree_add_item(njack_tree, hf_njack_get_data, tvb, offset,
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4, FALSE);
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offset += 4;
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break;
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case NJACK_TYPE_GETRESP:
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/* Type 0x0c: M -> S, Magic, type, T(8 bit) L(8 bit) V(L bytes) */
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while (!last) {
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tlv_type = tvb_get_guint8(tvb, offset);
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tlv_length = tvb_get_guint8(tvb, offset + 1);
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tlv_item = proto_tree_add_text(njack_tree, tvb,
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offset, tlv_length + 2,
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"T %02x, L %02x: %s",
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tlv_type,
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tlv_length,
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val_to_str(tlv_type, njack_cmd_vals, "Unknown"));
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tlv_tree = proto_item_add_subtree(tlv_item,
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ett_njack_getresp_tlv_header);
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proto_tree_add_item(tlv_tree, hf_njack_getresp_tlv_type,
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tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(tlv_tree, hf_njack_getresp_tlv_length,
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tvb, offset, 1, FALSE);
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offset += 1;
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switch (tlv_type) {
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case 0x02: /* IP address */
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case 0x03: /* Network address */
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case 0x04: /* Network mask */
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case 0x20: /* Default gateway */
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proto_tree_add_item(tlv_tree, hf_njack_getresp_tlv_typeip,
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tvb, offset, 4, FALSE);
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offset += 4;
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break;
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case 0x0d: /* group name */
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case 0x0e: /* location */
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case 0x19: /* password */
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case 0x1b: /* ro community ? */
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case 0x25: /* rw community ? */
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case 0x2a: /* Device string ? */
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case 0x2b: /* Serialno ? */
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proto_tree_add_item(tlv_tree, hf_njack_getresp_tlv_typestring,
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tvb, offset, tlv_length, FALSE);
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offset += tlv_length;
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break;
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case 0xff: /* End of packet */
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last = TRUE;
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break;
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default:
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if (tlv_length > 0) {
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proto_tree_add_item(tlv_tree, hf_njack_getresp_tlv_data,
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tvb, offset, tlv_length, FALSE);
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offset += tlv_length;
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}
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break;
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}
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}
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break;
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default:
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/* Unknown type */
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break;
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}
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}
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}
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static gboolean
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test_njack(tvbuff_t *tvb)
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{
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/* We need at least 'NJ200' + 1 Byte packet type */
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if ( !tvb_bytes_exist(tvb, 0, 6) ||
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g_strncasecmp(tvb_get_ptr(tvb, 0, 5), "NJ200", 5) ) {
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return FALSE;
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}
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return TRUE;
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}
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static gboolean
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dissect_njack_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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if ( !test_njack(tvb) ) {
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return FALSE;
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}
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dissect_njack(tvb, pinfo, tree);
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return TRUE;
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}
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static void
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dissect_njack_static(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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if ( !test_njack(tvb) ) {
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call_dissector(data_handle,tvb, pinfo, tree);
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return;
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}
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dissect_njack(tvb, pinfo, tree);
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return;
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}
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void
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proto_register_njack(void)
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{
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static hf_register_info hf[] = {
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/* NJACK header */
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{ &hf_njack_magic,
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{ "Magic", "njack.magic", FT_STRING, BASE_DEC, NULL,
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0x0, "", HFILL }},
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{ &hf_njack_type,
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{ "Type", "njack.type", FT_UINT8, BASE_HEX, NULL,
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0x0, "", HFILL }},
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/* Type 0x07: set */
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{ &hf_njack_set_length,
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{ "SetLength", "njack.set.length", FT_UINT16, BASE_HEX, NULL,
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0x0, "", HFILL }},
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{ &hf_njack_set_unknown1,
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{ "Unknown1", "njack.set.unknown1", FT_UINT8, BASE_HEX, NULL,
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0x0, "", HFILL }},
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{ &hf_njack_set_seqno,
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{ "Seqno", "njack.set.seqno", FT_UINT8, BASE_HEX, NULL,
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0x0, "", HFILL }},
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{ &hf_njack_set_unknown2,
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{ "Unknown2", "njack.set.unknown2", FT_UINT16, BASE_HEX, NULL,
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0x0, "", HFILL }},
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|
||||
{ &hf_njack_set_data,
|
||||
{ "Authdata??", "njack.set.data", FT_BYTES, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_set_tlv_type,
|
||||
{ "SetTlvType", "njack.set.tlv.type", FT_UINT8, BASE_HEX, VALS(njack_cmd_vals),
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_set_tlv_length,
|
||||
{ "SetTlvLength", "njack.set.tlv.length", FT_UINT8, BASE_HEX, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_set_tlv_data,
|
||||
{ "SetTlvData", "njack.set.tlv.data", FT_BYTES, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_set_tlv_typeip,
|
||||
{ "SetTlvTypeIP", "njack.set.tlv.typeip", FT_IPv4, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_set_tlv_typestring,
|
||||
{ "SetTlvTypeString", "njack.set.tlv.typestring", FT_STRING, BASE_DEC, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
/* Type 0x08: set result */
|
||||
{ &hf_njack_setresult,
|
||||
{ "SetResult", "njack.setresult", FT_UINT8, BASE_HEX, VALS(njack_setresult_vals),
|
||||
0x0, "", HFILL }},
|
||||
/* Type 0x0b get */
|
||||
{ &hf_njack_get_data,
|
||||
{ "GetData", "njack.get.data", FT_BYTES, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
/* Type 0x0c get response */
|
||||
{ &hf_njack_getresp_tlv_type,
|
||||
{ "TlvType", "njack.getresp.tlv.type", FT_UINT8, BASE_HEX, VALS(njack_cmd_vals),
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_getresp_tlv_length,
|
||||
{ "TlvLength", "njack.getresp.tlv.length", FT_UINT8, BASE_HEX, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_getresp_tlv_data,
|
||||
{ "GetResponeTlvData", "njack.getresp.tlv.data", FT_BYTES, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_getresp_tlv_typeip,
|
||||
{ "GetResponeTlvTypeIP", "njack.getresp.tlv.typeip", FT_IPv4, BASE_NONE, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
{ &hf_njack_getresp_tlv_typestring,
|
||||
{ "GetResponeTlvTypeString", "njack.getresp.tlv.typestring", FT_STRING, BASE_DEC, NULL,
|
||||
0x0, "", HFILL }},
|
||||
|
||||
};
|
||||
static gint *ett[] = {
|
||||
&ett_njack,
|
||||
&ett_njack_getresp_tlv_header,
|
||||
&ett_njack_set_tlv_header,
|
||||
};
|
||||
|
||||
proto_njack = proto_register_protocol(PROTO_LONG_NAME,
|
||||
PROTO_SHORT_NAME, "njack");
|
||||
proto_register_field_array(proto_njack, hf, array_length(hf));
|
||||
proto_register_subtree_array(ett, array_length(ett));
|
||||
}
|
||||
|
||||
void
|
||||
proto_reg_handoff_njack(void)
|
||||
{
|
||||
dissector_handle_t njack_handle;
|
||||
|
||||
data_handle = find_dissector("data");
|
||||
njack_handle = create_dissector_handle(dissect_njack_static, proto_njack);
|
||||
dissector_add("udp.port", PORT_NJACK1, njack_handle);
|
||||
dissector_add("tcp.port", PORT_NJACK1, njack_handle);
|
||||
dissector_add("udp.port", PORT_NJACK2, njack_handle);
|
||||
dissector_add("tcp.port", PORT_NJACK2, njack_handle);
|
||||
|
||||
heur_dissector_add("udp", dissect_njack_heur, proto_njack);
|
||||
heur_dissector_add("tcp", dissect_njack_heur, proto_njack);
|
||||
}
|
||||
Loading…
Reference in New Issue