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packet-dcerpc-messenger.c

/* packet-dcerpc-messenger.c
 * Routines for SMB \PIPE\msgsvc packet disassembly
 * Copyright 2003 Ronnie Sahlberg
 *
 * $Id: packet-dcerpc-messenger.c 18196 2006-05-21 04:49:01Z sahlberg $
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <glib.h>
#include <epan/prefs.h>
#include "packet-dcerpc.h"
#include "packet-dcerpc-nt.h"
#include "packet-windows-common.h"


static int proto_dcerpc_messenger = -1;
static int hf_messenger_opnum = -1;
static int hf_messenger_rc = -1;
static int hf_messenger_server = -1;
static int hf_messenger_client = -1;
static int hf_messenger_message = -1;

static gint ett_dcerpc_messenger = -1;


/* Windows messenger service listens on two endpoints:
 *   \pipe\msgsvc named pipe
 *   a dynamic UDP port
 */

static e_uuid_t uuid_dcerpc_messenger = {
        0x5a7b91f8, 0xff00, 0x11d0,
        { 0xa9, 0xb2, 0x00, 0xc0, 0x4f, 0xb6, 0xe6, 0xfc}
};

static guint16 ver_dcerpc_messenger = 1;



/*
 * IDL  [in][string][ref] char *server;
 * IDL  [in][string][ref] char *client;
 * IDL  [in][string][ref] char *message;
 */
static int
messenger_dissect_send_message_rqst(tvbuff_t *tvb, int offset, packet_info *pinfo,
                      proto_tree *tree, guint8 *drep)
{
        offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
                  dissect_ndr_char_cvstring, NDR_POINTER_REF,
                  "Server", hf_messenger_server);
        offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
                  dissect_ndr_char_cvstring, NDR_POINTER_REF,
                  "Client", hf_messenger_client);
        offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
                  dissect_ndr_char_cvstring, NDR_POINTER_REF,
                  "Message", hf_messenger_message);


      return offset;
}
static int
messenger_dissect_send_message_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
                      proto_tree *tree, guint8 *drep)
{
        offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
                          hf_messenger_rc, NULL);

      return offset;
}



static dcerpc_sub_dissector dcerpc_messenger_dissectors[] = {
        {0, "NetrSendMessage", 
            messenger_dissect_send_message_rqst,
            messenger_dissect_send_message_reply },
        {0, NULL, NULL,  NULL }
};

void
proto_register_dcerpc_messenger(void)
{
        static hf_register_info hf[] = {

            { &hf_messenger_opnum,
              { "Operation", "messenger.opnum", FT_UINT16, BASE_DEC,
                NULL, 0x0, "Operation", HFILL }},

                { &hf_messenger_rc,
                  { "Return code", "messenger.rc", FT_UINT32, BASE_HEX, VALS (NT_errors), 0x0, "", HFILL }},

            { &hf_messenger_server, {
            "Server", "messenger.server", 
            FT_STRING, BASE_NONE, NULL, 0, "Server to send the message to", HFILL }},

            { &hf_messenger_client, {
            "Client", "messenger.client", 
            FT_STRING, BASE_NONE, NULL, 0, "Client that sent the message", HFILL }},

            { &hf_messenger_message, {
            "Message", "messenger.message", 
            FT_STRING, BASE_NONE, NULL, 0, "The message being sent", HFILL }}

        };

        static gint *ett[] = {
                &ett_dcerpc_messenger
        };

        proto_dcerpc_messenger = proto_register_protocol(
                "Microsoft Messenger Service", "Messenger", "messenger");

        proto_register_field_array (proto_dcerpc_messenger, hf, array_length (hf));
        proto_register_subtree_array(ett, array_length(ett));

}

void
proto_reg_handoff_dcerpc_messenger(void)
{
        /* Register protocol as dcerpc */

        dcerpc_init_uuid(proto_dcerpc_messenger, ett_dcerpc_messenger, &uuid_dcerpc_messenger,
                         ver_dcerpc_messenger, dcerpc_messenger_dissectors, hf_messenger_opnum);
}

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