![Bill Meier](/assets/img/avatar_default.png)
Change-Id: I391cdf80a6e4ae5b0f4068e0500a90d013588f8a Reviewed-on: https://code.wireshark.org/review/4442 Reviewed-by: Bill Meier <wmeier@newsguy.com>
873 lines
26 KiB
C
873 lines
26 KiB
C
/* packet-nbipx.c
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* Routines for NetBIOS over IPX packet disassembly
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* Gilbert Ramirez <gram@alumni.rice.edu>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/to_str.h>
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#include "packet-ipx.h"
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#include "packet-netbios.h"
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void proto_register_nbipx(void);
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void proto_reg_handoff_nbipx(void);
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void proto_register_nmpi(void);
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void proto_reg_handoff_nmpi(void);
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static int proto_nbipx = -1;
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static int hf_nbipx_packettype = -1;
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static int hf_nbipx_name_flags = -1;
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static int hf_nbipx_name_flags_group = -1;
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static int hf_nbipx_name_flags_in_use = -1;
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static int hf_nbipx_name_flags_registered = -1;
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static int hf_nbipx_name_flags_duplicated = -1;
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static int hf_nbipx_name_flags_deregistered = -1;
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static int hf_nbipx_conn_control = -1;
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static int hf_nbipx_conn_control_sys_packet = -1;
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static int hf_nbipx_conn_control_ack = -1;
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static int hf_nbipx_conn_control_attention = -1;
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static int hf_nbipx_conn_control_end_msg = -1;
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static int hf_nbipx_conn_control_resend = -1;
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static int hf_nbipx_session_src_conn_id = -1;
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static int hf_nbipx_session_dest_conn_id = -1;
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static int hf_nbipx_session_send_seq_number = -1;
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static int hf_nbipx_session_total_data_length = -1;
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static int hf_nbipx_session_offset = -1;
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static int hf_nbipx_session_data_length = -1;
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static int hf_nbipx_session_recv_seq_number = -1;
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static int hf_nbipx_session_bytes_received = -1;
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static int hf_nbipx_ipx_network = -1;
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static int hf_nbipx_opcode = -1;
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static int hf_nbipx_name_type = -1;
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static int hf_nbipx_messageid = -1;
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static gint ett_nbipx = -1;
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static gint ett_nbipx_conn_ctrl = -1;
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static gint ett_nbipx_name_type_flags = -1;
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static void dissect_conn_control(tvbuff_t *tvb, int offset, proto_tree *tree);
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/* There is no RFC or public specification of Netware or Microsoft
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* NetBIOS over IPX packets. I have had to decode the protocol myself,
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* so there are holes and perhaps errors in this code. (gram)
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*
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* A list of "NovelNetBIOS" packet types can be found at
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*
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* http://www.protocols.com/pbook/novel.htm#NetBIOS
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*
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* and at least some of those packet types appear to match what's in
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* some NBIPX packets.
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*
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* Note, however, that it appears that sometimes NBIPX packets have
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* 8 IPX addresses at the beginning, and sometimes they don't.
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*
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* In the section on "NetBIOS Broadcasts", the document at
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*
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* http://www.microsoft.com/technet/network/ipxrout.asp
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*
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* says that "the NetBIOS over IPX Broadcast header" contains 8 IPX
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* network numbers in the "IPX WAN broadcast header", and that it's
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* followed by a "Name Type Flags" byte (giving information about the
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* name being registered, deregistered, or checked), a "Data Stream
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* Type 2" byte giving the type of operation (NBIPX_FIND_NAME,
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* NBIPX_NAME_RECOGNIZED, or NBIPX_CHECK_NAME - the latter is called
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* "Add Name"), and a 16-byte NetBIOS name.
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*
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* It also says that "NetBIOS over IPX Broadcast packets" have a
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* packet type of 0x14 (20, or IPX_PACKET_TYPE_WANBCAST) and a
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* socket number of 0x455 (IPX_SOCKET_NETBIOS).
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*
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* However, there are also non-broadcast packets that *also* contain
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* the 8 IPX network numbers; they appear to be replies to broadcast
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* packets, and have a packet type of 0x4 (IPX_PACKET_TYPE_PEP).
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*
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* Other IPX_PACKET_TYPE_PEP packets to and from the IPX_SOCKET_NETBIOS
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* socket, however, *don't* have the 8 IPX network numbers; there does
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* not seem to be any obvious algorithm to determine whether the packet
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* has the addresses or not. Microsoft Knowledge Base article Q128335
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* appears to show some code from the NBIPX implementation in NT that
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* tries to determine the packet type - and it appears to use heuristics
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* based on the packet length and on looking at what might be the NBIPX
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* "Data Stream Type" byte depending on whether the packet has the 8
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* IPX network numbers or not.
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*
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* So, for now, we treat *all* NBIPX packets as having a "Data Stream
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* Type" byte, preceded by another byte of NBIPX information and
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* followed by more NBIPX stuff, and assume that it's preceded by
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* 8 IPX network numbers iff:
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*
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* the packet is a WAN Broadcast packet
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*
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* or
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*
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* the packet is the right size for one of those PEP name replies
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* (50 bytes) *and* has a name packet type as the Data Stream
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* Type byte at the offset where that byte would be if the packet
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* does have the 8 IPX network numbers at the beginning.
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*
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* The page at
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*
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* http://ourworld.compuserve.com/homepages/TimothyDEvans/encap.htm
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*
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* indicates, under "NBIPX session packets", that "NBIPX session packets"
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* have
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*
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* 1 byte of NBIPX connection control flag
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* 1 byte of data stream type
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* 2 bytes of source connection ID
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* 2 bytes of destination connection ID
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* 2 bytes of send sequence number
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* 2 bytes of total data length
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* 2 bytes of offset
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* 2 bytes of data length
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* 2 bytes of receive sequence number
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* 2 bytes of "bytes received"
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*
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* followed by data.
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*
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* Packets with a data stream type of NBIPX_DIRECTED_DATAGRAM appear to
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* have, following the data stream type, two NetBIOS names, the first
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* of which is the receiver's NetBIOS name and the second of which is
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* the sender's NetBIOS name. The page at
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*
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* http://support.microsoft.com/support/kb/articles/q203/0/51.asp
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*
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* speaks of type 4 (PEP) packets as being used for "SAP, NetBIOS sessions
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* and directed datagrams" and type 20 (WAN Broadcast) as being used for
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* "NetBIOS name resolution broadcasts" (but nothing about the non-broadcast
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* type 4 name resolution stuff).
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*
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* We assume that this means that, once you get past the 8 IPX network
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* numbers if present:
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*
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* the first byte is a name type byte for the name packets
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* and a connection control flag for the other packets;
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*
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* the second byte is a data stream type;
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*
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* the rest of the bytes are:
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*
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* the NetBIOS name being registered/deregistered/etc.,
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* for name packets;
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*
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* the two NetBIOS names, followed by the NetBIOS
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* datagram, for NBIPX_DIRECTED_DATAGRAM packets;
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*
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* the session packet header, possibly followed by
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* session data, for session packets.
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*
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* We don't know yet how to interpret NBIPX_STATUS_QUERY or
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* NBIPX_STATUS_RESPONSE.
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*
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* For now, we treat the datagrams and session data as SMB stuff.
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*/
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#define NBIPX_FIND_NAME 1
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#define NBIPX_NAME_RECOGNIZED 2
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#define NBIPX_CHECK_NAME 3
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#define NBIPX_NAME_IN_USE 4
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#define NBIPX_DEREGISTER_NAME 5
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#define NBIPX_SESSION_DATA 6
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#define NBIPX_SESSION_END 7
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#define NBIPX_SESSION_END_ACK 8
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#define NBIPX_STATUS_QUERY 9
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#define NBIPX_STATUS_RESPONSE 10
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#define NBIPX_DIRECTED_DATAGRAM 11
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static const value_string nbipx_data_stream_type_vals[] = {
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{NBIPX_FIND_NAME, "Find name"},
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{NBIPX_NAME_RECOGNIZED, "Name recognized"},
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{NBIPX_CHECK_NAME, "Check name"},
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{NBIPX_NAME_IN_USE, "Name in use"},
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{NBIPX_DEREGISTER_NAME, "Deregister name"},
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{NBIPX_SESSION_DATA, "Session data"},
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{NBIPX_SESSION_END, "Session end"},
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{NBIPX_SESSION_END_ACK, "Session end ACK"},
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{NBIPX_STATUS_QUERY, "Status query"},
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{NBIPX_STATUS_RESPONSE, "Status response"},
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{NBIPX_DIRECTED_DATAGRAM, "Directed datagram"},
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{0, NULL}
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};
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/*
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* Opcodes.
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*/
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#define INAME_CLAIM 0xf1
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#define INAME_DELETE 0xf2
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#define INAME_QUERY 0xf3
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#define INAME_FOUND 0xf4
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#define IMSG_HANGUP 0xf5
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#define IMSLOT_SEND 0xfc
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#define IMSLOT_FIND 0xfd
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#define IMSLOT_NAME 0xfe
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static const value_string nmpi_opcode_vals[] = {
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{INAME_CLAIM, "Claim name"},
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{INAME_DELETE, "Delete name"},
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{INAME_QUERY, "Query name"},
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{INAME_FOUND, "Name found"},
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{IMSG_HANGUP, "Messenger hangup"},
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{IMSLOT_SEND, "Mailslot write"},
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{IMSLOT_FIND, "Find mailslot name"},
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{IMSLOT_NAME, "Mailslot name found"},
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{0, NULL}
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};
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/*
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* Name types.
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*/
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#define INTYPE_MACHINE 1
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#define INTYPE_WORKGROUP 2
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#define INTYPE_BROWSER 3
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static const value_string nmpi_name_type_vals[] = {
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{INTYPE_MACHINE, "Machine"},
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{INTYPE_WORKGROUP, "Workgroup"},
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{INTYPE_BROWSER, "Browser"},
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{0, NULL}
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};
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static const true_false_string tfs_system_non_system = { "System packet", "Non-system packet" };
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static void
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add_routers(proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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int i;
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/* Eight routers are listed */
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for (i = 0; i < 8; i++) {
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if (tvb_get_ntohl(tvb, offset) != 0) {
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proto_tree_add_item(tree, hf_nbipx_ipx_network, tvb, offset, 4, ENC_NA);
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}
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offset += 4;
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}
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}
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static int
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dissect_nbipx(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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gboolean has_routes;
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proto_tree *nbipx_tree = NULL;
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proto_item *ti = NULL;
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int offset = 0;
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guint8 packet_type;
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proto_tree *name_type_flag_tree;
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proto_item *tf;
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char name[(NETBIOS_NAME_LEN - 1)*4 + 1];
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int name_type;
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gboolean has_payload;
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tvbuff_t *next_tvb;
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ipxhdr_t *ipxh;
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/* Reject the packet if data is NULL */
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if (data == NULL)
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return 0;
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ipxh = (ipxhdr_t*)data;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "NBIPX");
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col_clear(pinfo->cinfo, COL_INFO);
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if (ipxh->ipx_type == IPX_PACKET_TYPE_WANBCAST) {
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/*
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* This is a WAN Broadcast packet; we assume it will have
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* 8 IPX addresses at the beginning.
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*/
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has_routes = TRUE;
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} else {
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/*
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* This isn't a WAN Broadcast packet, but it still might
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* have the 8 addresses.
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*
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* If it's the right length for a name operation,
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* and, if we assume it has routes, the packet type
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* is a name operation, assume it has routes.
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*
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* NOTE: this will throw an exception if the byte that
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* would be the packet type byte if this has the 8
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* addresses isn't present; if that's the case, we don't
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* know how to interpret this packet, so we can't dissect
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* it anyway.
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*/
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has_routes = FALSE; /* start out assuming it doesn't */
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if (tvb_reported_length(tvb) == 50) {
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packet_type = tvb_get_guint8(tvb, offset + 32 + 1);
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switch (packet_type) {
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case NBIPX_FIND_NAME:
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case NBIPX_NAME_RECOGNIZED:
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case NBIPX_CHECK_NAME:
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case NBIPX_NAME_IN_USE:
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case NBIPX_DEREGISTER_NAME:
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has_routes = TRUE;
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break;
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}
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}
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_nbipx, tvb, 0,
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-1, ENC_NA);
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nbipx_tree = proto_item_add_subtree(ti, ett_nbipx);
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}
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if (has_routes) {
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if (tree)
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add_routers(nbipx_tree, tvb, 0);
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offset += 32;
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}
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packet_type = tvb_get_guint8(tvb, offset + 1);
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switch (packet_type) {
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case NBIPX_FIND_NAME:
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case NBIPX_NAME_RECOGNIZED:
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case NBIPX_CHECK_NAME:
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case NBIPX_NAME_IN_USE:
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case NBIPX_DEREGISTER_NAME:
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name_type = get_netbios_name(tvb, offset+2, name, (NETBIOS_NAME_LEN - 1)*4 + 1);
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s<%02x>",
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val_to_str_const(packet_type, nbipx_data_stream_type_vals, "Unknown"),
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name, name_type);
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if (nbipx_tree) {
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tf = proto_tree_add_item(nbipx_tree, hf_nbipx_name_flags, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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name_type_flag_tree = proto_item_add_subtree(tf, ett_nbipx_name_type_flags);
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proto_tree_add_item(name_type_flag_tree, hf_nbipx_name_flags_group, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(name_type_flag_tree, hf_nbipx_name_flags_in_use, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(name_type_flag_tree, hf_nbipx_name_flags_registered, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(name_type_flag_tree, hf_nbipx_name_flags_duplicated, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(name_type_flag_tree, hf_nbipx_name_flags_deregistered, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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}
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offset += 1;
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proto_tree_add_uint(nbipx_tree, hf_nbipx_packettype, tvb, offset, 1, packet_type);
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offset += 1;
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if (nbipx_tree)
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netbios_add_name("Name", tvb, offset, nbipx_tree);
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offset += NETBIOS_NAME_LEN;
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/*
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* No payload to be interpreted by another protocol.
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*/
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has_payload = FALSE;
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break;
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case NBIPX_SESSION_DATA:
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case NBIPX_SESSION_END:
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case NBIPX_SESSION_END_ACK:
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col_set_str(pinfo->cinfo, COL_INFO,
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val_to_str_const(packet_type, nbipx_data_stream_type_vals, "Unknown"));
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dissect_conn_control(tvb, offset, nbipx_tree);
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offset += 1;
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proto_tree_add_uint(nbipx_tree, hf_nbipx_packettype, tvb, offset, 1, packet_type);
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offset += 1;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_src_conn_id, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_dest_conn_id, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_send_seq_number, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_total_data_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_offset, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_data_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_recv_seq_number, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(nbipx_tree, hf_nbipx_session_bytes_received, tvb, offset, 2, ENC_LITTLE_ENDIAN);
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offset += 2;
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/*
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* We may have payload to dissect.
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*/
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has_payload = TRUE;
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break;
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case NBIPX_DIRECTED_DATAGRAM:
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col_set_str(pinfo->cinfo, COL_INFO,
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val_to_str_const(packet_type, nbipx_data_stream_type_vals, "Unknown"));
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dissect_conn_control(tvb, offset, nbipx_tree);
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offset += 1;
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proto_tree_add_uint(nbipx_tree, hf_nbipx_packettype, tvb, offset, 1, packet_type);
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offset += 1;
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if (nbipx_tree)
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netbios_add_name("Receiver's Name", tvb, offset,
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nbipx_tree);
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offset += NETBIOS_NAME_LEN;
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|
|
if (nbipx_tree)
|
|
netbios_add_name("Sender's Name", tvb, offset,
|
|
nbipx_tree);
|
|
offset += NETBIOS_NAME_LEN;
|
|
|
|
/*
|
|
* We may have payload to dissect.
|
|
*/
|
|
has_payload = TRUE;
|
|
break;
|
|
|
|
default:
|
|
col_set_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str_const(packet_type, nbipx_data_stream_type_vals, "Unknown"));
|
|
|
|
/*
|
|
* We don't know what the first byte is.
|
|
*/
|
|
offset += 1;
|
|
|
|
/*
|
|
* The second byte is a data stream type byte.
|
|
*/
|
|
proto_tree_add_uint(nbipx_tree, hf_nbipx_packettype, tvb, offset, 1, packet_type);
|
|
offset += 1;
|
|
|
|
/*
|
|
* We don't know what the rest of the packet is.
|
|
*/
|
|
has_payload = FALSE;
|
|
}
|
|
|
|
/*
|
|
* Set the length of the NBIPX tree item.
|
|
*/
|
|
if (ti != NULL)
|
|
proto_item_set_len(ti, offset);
|
|
|
|
if (has_payload && tvb_offset_exists(tvb, offset)) {
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
dissect_netbios_payload(next_tvb, pinfo, tree);
|
|
}
|
|
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
static void
|
|
dissect_conn_control(tvbuff_t *tvb, int offset, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *cc_tree;
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, hf_nbipx_conn_control, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
cc_tree = proto_item_add_subtree(ti, ett_nbipx_conn_ctrl);
|
|
proto_tree_add_item(cc_tree, hf_nbipx_conn_control_sys_packet, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(cc_tree, hf_nbipx_conn_control_ack, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(cc_tree, hf_nbipx_conn_control_attention, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(cc_tree, hf_nbipx_conn_control_end_msg, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(cc_tree, hf_nbipx_conn_control_resend, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_nbipx(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_nbipx_packettype,
|
|
{ "Packet Type", "nmpi.packettype",
|
|
FT_UINT8, BASE_HEX, VALS(nbipx_data_stream_type_vals), 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags,
|
|
{ "Name type flag", "nmpi.name_flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags_group,
|
|
{ "Name", "nmpi.name_flags.group",
|
|
FT_BOOLEAN, 8, TFS(&tfs_group_unique_name), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags_in_use,
|
|
{ "In use", "nmpi.name_flags.in_use",
|
|
FT_BOOLEAN, 8, TFS(&tfs_used_notused), 0x40,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags_registered,
|
|
{ "Registered", "nmpi.name_flags.registered",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x04,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags_duplicated,
|
|
{ "Duplicated", "nmpi.name_flags.duplicated",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x02,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_flags_deregistered,
|
|
{ "Deregistered", "nmpi.name_flags.deregistered",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x01,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control,
|
|
{ "Connection control", "nmpi.conn_control",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control_sys_packet,
|
|
{ "Packet", "nmpi.conn_control.sys_packet",
|
|
FT_BOOLEAN, 8, TFS(&tfs_system_non_system), 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control_ack,
|
|
{ "Acknowledgement", "nmpi.conn_control.ack",
|
|
FT_BOOLEAN, 8, TFS(&tfs_required_not_required), 0x40,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control_attention,
|
|
{ "Attention", "nmpi.conn_control.attention",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x20,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control_end_msg,
|
|
{ "End of message", "nmpi.conn_control.end_msg",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x10,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_conn_control_resend,
|
|
{ "Resend", "nmpi.conn_control.resend",
|
|
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_src_conn_id,
|
|
{ "Source connection ID", "nmpi.session.src_conn_id",
|
|
FT_UINT16, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_dest_conn_id,
|
|
{ "Destination connection ID", "nmpi.session.dest_conn_id",
|
|
FT_UINT16, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_send_seq_number,
|
|
{ "Send sequence number", "nmpi.session.send_seq_number",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_total_data_length,
|
|
{ "Total data length", "nmpi.session.total_data_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_offset,
|
|
{ "Offset", "nmpi.session.offset",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_data_length,
|
|
{ "Data length", "nmpi.session.data_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_recv_seq_number,
|
|
{ "Receive sequence number", "nmpi.session.recv_seq_number",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_session_bytes_received,
|
|
{ "Bytes received", "nmpi.session.bytes_received",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_ipx_network,
|
|
{ "IPX Network", "nmpi.ipx_network",
|
|
FT_IPXNET, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_opcode,
|
|
{ "Opcode", "nmpi.opcode",
|
|
FT_UINT8, BASE_HEX, VALS(nmpi_opcode_vals), 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_name_type,
|
|
{ "Name Type", "nmpi.name_type",
|
|
FT_UINT8, BASE_HEX, VALS(nmpi_name_type_vals), 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_nbipx_messageid,
|
|
{ "Message ID", "nmpi.messageid",
|
|
FT_UINT16, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_nbipx,
|
|
&ett_nbipx_conn_ctrl,
|
|
&ett_nbipx_name_type_flags,
|
|
};
|
|
|
|
proto_nbipx = proto_register_protocol("NetBIOS over IPX", "NBIPX", "nbipx");
|
|
proto_register_field_array(proto_nbipx, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_nbipx(void)
|
|
{
|
|
dissector_handle_t nbipx_handle;
|
|
|
|
nbipx_handle = new_create_dissector_handle(dissect_nbipx, proto_nbipx);
|
|
dissector_add_uint("ipx.socket", IPX_SOCKET_NETBIOS, nbipx_handle);
|
|
}
|
|
|
|
/*
|
|
* Microsoft appear to have something they call "direct hosting", where
|
|
* SMB - and, I infer, related stuff, such as name resolution - runs
|
|
* directly over IPX. (In Windows 2000, they also run SMB directly over
|
|
* TCP, on port 445, and that also appears to be called "direct hosting".
|
|
* Wireshark handles SMB-over-TCP.)
|
|
*
|
|
* The document at
|
|
*
|
|
* http://support.microsoft.com/support/kb/articles/q203/0/51.asp
|
|
*
|
|
* speaks of NMPI - the "Name Management Protocol on IPX" - as being
|
|
* "Microsoft's protocol for name management support when you use IPX
|
|
* without the NetBIOS interface," and says that "This process of routing
|
|
* the SMB protocol directly through IPX is known as Direct Hosting."
|
|
*
|
|
* It speaks of IPX socket 0x551 as being for NMPI; we define it as
|
|
* IPX_SOCKET_NWLINK_SMB_NAMEQUERY.
|
|
*
|
|
* We also define IPX_SOCKET_NWLINK_SMB_DGRAM as 0x0553 and define
|
|
* IPX_SOCKET_NWLINK_SMB_BROWSE as 0x0555 (with a "? not sure on this"
|
|
* comment after the latter one).
|
|
*
|
|
* We have seen at least some browser announcements on IPX socket 0x553;
|
|
* those are WAN broadcast packets, complete with 8 IPX network
|
|
* numbers, and with the header containing the usual two NetBIOS names
|
|
* that show up in NetBIOS datagrams.
|
|
*
|
|
* Network Monitor calls those packets NMPI packets, even though they're
|
|
* on socket 0x553, not socket 0x551, and contain SMB datagrams, not name
|
|
* resolution packets.
|
|
*
|
|
* At least some of this is discussed in the "SMBPUB.DOC" Word document
|
|
* stored in
|
|
*
|
|
* ftp://ftp.microsoft.com/developr/drg/CIFS/smbpub.zip
|
|
*
|
|
* which can also be found in text form at
|
|
*
|
|
* http://www.samba.org/samba/ftp/specs/smbpub.txt
|
|
*
|
|
* which says that for "connectionless IPX transport" the sockets that
|
|
* are used are:
|
|
*
|
|
* SMB_SERVER_SOCKET (0x550) - SMB requests from clients
|
|
* SMB_NAME_SOCKET (0x551) - name claims and name query messages
|
|
* REDIR_SOCKET (0x552) - used by the redirector (client) for
|
|
* sending SMB requests and receiving SMB replies
|
|
* MAILSLOT_SOCKET (0x553) - used by the redirector and browser
|
|
* for mailslot datagrams
|
|
* MESSENGER_SOCKET (0x554) - used by the redirector to send
|
|
* messages from client to client
|
|
*
|
|
* Name claim/query packets, and mailslot datagrams, are:
|
|
*
|
|
* 8 IPX network addresses
|
|
* 1 byte of opcode
|
|
* 1 byte of name type
|
|
* 2 bytes of message ID
|
|
* 16 bytes of name being sought or claimed
|
|
* 16 bytes of requesting machine
|
|
*
|
|
* The opcode is one of:
|
|
*
|
|
* INAME_CLAIM (0xf1) - server name claim message
|
|
* INAME_DELETE (0xf2) - relinquish server name
|
|
* INAME_QUERY (0xf3) - locate server name
|
|
* INAME_FOUND (0xf4) - response to INAME_QUERY
|
|
* IMSG_HANGUP (0xf5) - messenger hangup
|
|
* IMSLOT_SEND (0xfc) - mailslot write
|
|
* IMSLOT_FIND (0xfd) - find name for mailslot write
|
|
* IMSLOT_NAME (0xfe) - response to IMSLOT_FIND
|
|
*
|
|
* The name type is one of:
|
|
*
|
|
* INTYPE_MACHINE 1
|
|
* INTYPE_WKGROUP 2
|
|
* INTYPE_BROWSER 3
|
|
*/
|
|
static int proto_nmpi = -1;
|
|
|
|
static gint ett_nmpi = -1;
|
|
static gint ett_nmpi_name_type_flags = -1;
|
|
|
|
|
|
static void
|
|
dissect_nmpi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *nmpi_tree = NULL;
|
|
proto_item *ti;
|
|
int offset = 0;
|
|
guint8 opcode;
|
|
char name[(NETBIOS_NAME_LEN - 1)*4 + 1];
|
|
int name_type;
|
|
char node_name[(NETBIOS_NAME_LEN - 1)*4 + 1];
|
|
/*int node_name_type = 0;*/
|
|
tvbuff_t *next_tvb;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NMPI");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_nmpi, tvb, offset, 68,
|
|
ENC_NA);
|
|
nmpi_tree = proto_item_add_subtree(ti, ett_nmpi);
|
|
|
|
add_routers(nmpi_tree, tvb, offset);
|
|
}
|
|
offset += 32;
|
|
|
|
/*
|
|
* XXX - we don't use "node_name" or "node_name_type".
|
|
*/
|
|
opcode = tvb_get_guint8(tvb, offset);
|
|
name_type = get_netbios_name(tvb, offset+4, name, (NETBIOS_NAME_LEN - 1)*4 + 1);
|
|
/*node_name_type = */get_netbios_name(tvb, offset+20, node_name, (NETBIOS_NAME_LEN - 1)*4 + 1);
|
|
|
|
switch (opcode) {
|
|
|
|
case INAME_CLAIM:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Claim name %s<%02x>",
|
|
name, name_type);
|
|
break;
|
|
|
|
case INAME_DELETE:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Delete name %s<%02x>",
|
|
name, name_type);
|
|
break;
|
|
|
|
case INAME_QUERY:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Query name %s<%02x>",
|
|
name, name_type);
|
|
break;
|
|
|
|
case INAME_FOUND:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Name %s<%02x> found",
|
|
name, name_type);
|
|
break;
|
|
|
|
case IMSG_HANGUP:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
|
"Messenger hangup on %s<%02x>", name, name_type);
|
|
break;
|
|
|
|
case IMSLOT_SEND:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
|
"Mailslot write to %s<%02x>", name, name_type);
|
|
break;
|
|
|
|
case IMSLOT_FIND:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
|
"Find mailslot name %s<%02x>", name, name_type);
|
|
break;
|
|
|
|
case IMSLOT_NAME:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
|
"Mailslot name %s<%02x> found", name, name_type);
|
|
break;
|
|
|
|
default:
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
|
"Unknown NMPI op 0x%02x: name %s<%02x>",
|
|
opcode, name, name_type);
|
|
break;
|
|
}
|
|
|
|
if (tree) {
|
|
proto_tree_add_item(nmpi_tree, hf_nbipx_opcode, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(nmpi_tree, hf_nbipx_name_type, tvb, offset+1, 1, ENC_NA);
|
|
proto_tree_add_item(nmpi_tree, hf_nbipx_messageid, tvb, offset+2, 2, ENC_LITTLE_ENDIAN);
|
|
netbios_add_name("Requested name", tvb, offset+4, nmpi_tree);
|
|
netbios_add_name("Source name", tvb, offset+20, nmpi_tree);
|
|
}
|
|
|
|
offset += 1 + 1 + 2 + NETBIOS_NAME_LEN + NETBIOS_NAME_LEN;
|
|
|
|
if (opcode == IMSLOT_SEND && tvb_offset_exists(tvb, offset)) {
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
dissect_netbios_payload(next_tvb, pinfo, tree);
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_nmpi(void)
|
|
{
|
|
/*
|
|
static hf_register_info hf[] = {
|
|
{ &variable,
|
|
{ "Name", "nmpi.abbreviation", TYPE, VALS_POINTER }},
|
|
}; */
|
|
static gint *ett[] = {
|
|
&ett_nmpi,
|
|
&ett_nmpi_name_type_flags,
|
|
};
|
|
|
|
proto_nmpi = proto_register_protocol("Name Management Protocol over IPX",
|
|
"NMPI", "nmpi");
|
|
/* proto_register_field_array(proto_nmpi, hf, array_length(hf));*/
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_nmpi(void)
|
|
{
|
|
dissector_handle_t nmpi_handle;
|
|
|
|
nmpi_handle = create_dissector_handle(dissect_nmpi, proto_nmpi);
|
|
dissector_add_uint("ipx.socket", IPX_SOCKET_NWLINK_SMB_NAMEQUERY,
|
|
nmpi_handle);
|
|
dissector_add_uint("ipx.socket", IPX_SOCKET_NWLINK_SMB_MAILSLOT,
|
|
nmpi_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:
|
|
*/
|