Ethereal-dev: [Ethereal-dev] Megaco h.248 plugin extension
Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.
From: ch.wiest@xxxxxxxxxxxxx
Date: Thu, 26 Jun 2003 15:16:53 +0200
Hello, i modified the Megaco plugin. I attached packet-megaco.h, moduleinfo.h and the compiled megaco.dll. Please tell me, if something doesnt work.
/* packet-megaco.c
* Routines for megaco packet disassembly
* RFC 3015
*
* $Id: packet-megaco.c,v 1.3 2003/01/15 00:17:53 guy Exp $
*
* Christian Falckenberg, 2002/10/17
* Copyright (c) 2002 by Christian Falckenberg
* <christian.falckenberg@xxxxxxxxxxxxxxxxxx>
*
* Christoph Wiest, 2003/06/28
* Modified 2003 by Christoph Wiest
* <ch.wiest@xxxxxxxxxxxxx>
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@xxxxxxxxxxxx>
* Copyright 1999 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 "plugins/plugin_api.h"
#include "moduleinfo.h"
#include <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#include <ctype.h>
#include <time.h>
#include <string.h>
#include <epan/packet.h>
#include <epan/resolv.h>
#include "prefs.h"
#include <epan/strutil.h>
#include "sctpppids.h"
#include "plugins/plugin_api_defs.h"
#ifndef __ETHEREAL_STATIC__
G_MODULE_EXPORT const gchar version[] = VERSION;
#endif
#define PORT_MEGACO_TXT 2944
#define PORT_MEGACO_BIN 2945
void proto_reg_handoff_megaco(void);
/* Define the megaco proto */
static int proto_megaco = -1;
/* Define headers for megaco */
static int hf_megaco_version = -1;
static int hf_megaco_transaction = -1;
static int hf_megaco_transid = -1;
static int hf_megaco_Context = -1;
static int hf_megaco_command_line = -1;
static int hf_megaco_command = -1;
static int hf_megaco_termid = -1;
/* Define Subtrees for megaco */
static int hf_megaco_Descriptors = -1;
/* Define headers in subtree for megaco */
static int hf_megaco_modem_descriptor = -1;
static int hf_megaco_multiplex_descriptor = -1;
static int hf_megaco_media_descriptor = -1;
static int hf_megaco_events_descriptor = -1;
static int hf_megaco_signal_descriptor = -1;
static int hf_megaco_audit_descriptor = -1;
static int hf_megaco_servicechange_descriptor = -1;
static int hf_megaco_digitmap_descriptor = -1;
static int hf_megaco_statistics_descriptor = -1;
static int hf_megaco_observedevents_descriptor = -1;
static int hf_megaco_topology_descriptor = -1;
static int hf_megaco_error_descriptor = -1;
static int hf_megaco_TerminationState_descriptor= -1;
static int hf_megaco_Remote_descriptor = -1;
static int hf_megaco_Local_descriptor = -1;
static int hf_megaco_LocalControl_descriptor = -1;
static int hf_megaco_packages_descriptor = -1;
static int hf_megaco_error_Frame = -1;
static int hf_megaco_Service_State = -1;
static int hf_megaco_Event_Buffer_Control = -1;
static int hf_megaco_mode = -1;
static int hf_megaco_reserve_group = -1;
static int hf_megaco_reserve_value = -1;
static int hf_megaco_streamid = -1;
static int hf_megaco_requestid = -1;
static int hf_megaco_pkgdname = -1;
/* Define the trees for megaco */
static int ett_megaco = -1;
static int ett_megaco_command_line = -1;
static int ett_megaco_mediadescriptor = -1;
static int ett_megaco_descriptors = -1;
static int ett_megaco_TerminationState = -1;
static int ett_megaco_Localdescriptor = -1;
static int ett_megaco_Remotedescriptor = -1;
static int ett_megaco_LocalControldescriptor = -1;
static int ett_megaco_auditdescriptor = -1;
static int ett_megaco_eventsdescriptor = -1;
static int ett_megaco_observedeventsdescriptor = -1;
static int ett_megaco_observedevent = -1;
static int ett_megaco_packagesdescriptor = -1;
static int ett_megaco_requestedevent = -1;
static int ett_megaco_signalsdescriptor = -1;
static int ett_megaco_requestedsignal = -1;
/*
* Here are the global variables associated with
* the various user definable characteristics of the dissection
*
* MEGACO has two kinds of message formats: text and binary
*
* global_megaco_raw_text determines whether we are going to display
* the raw text of the megaco message, much like the HTTP dissector does.
*
* global_megaco_dissect_tree determines whether we are going to display
* a detailed tree that expresses a somewhat more semantically meaningful
* decode.
*/
static int global_megaco_txt_tcp_port = PORT_MEGACO_TXT;
static int global_megaco_txt_udp_port = PORT_MEGACO_TXT;
#if 0
static int global_megaco_bin_tcp_port = PORT_MEGACO_BIN;
static int global_megaco_bin_udp_port = PORT_MEGACO_BIN;
#endif
static gboolean global_megaco_raw_text = TRUE;
static gboolean global_megaco_dissect_tree = TRUE;
/*
* Variables to allow for proper deletion of dissector registration when
* the user changes port from the gui.
*/
static int txt_tcp_port = 0;
static int txt_udp_port = 0;
#if 0
static int bin_tcp_port = 0;
static int bin_udp_port = 0;
#endif
/* Some basic utility functions that are specific to this dissector */
static gint tvb_skip_wsp(tvbuff_t* tvb, gint offset);
static gint tvb_skip_wsp_return(tvbuff_t* tvb, gint offset);
/*
* The various functions that either dissect some
* subpart of MEGACO. These aren't really proto dissectors but they
* are written in the same style.
*
*/
static void
dissect_megaco_descriptors(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, gint tvb_descriptors_start_offset, gint tvb_descriptors_end_offset);
static void
dissect_megaco_modemdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_multiplexdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_mediadescriptor(tvbuff_t *tvb, proto_tree *tree,packet_info *pinfo, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_eventsdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_signaldescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_auditdescriptor(tvbuff_t *tvb, proto_tree *tree,packet_info *pinfo, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_servicechangedescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_digitmapdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_statisticsdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_observedeventsdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_topologydescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_errordescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_RBRKT, gint tvb_previous_offset);
static void
dissect_megaco_TerminationStatedescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_next_offset, gint tvb_current_offset);
static void
dissect_megaco_Localdescriptor(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, gint tvb_next_offset, gint tvb_current_offset);
static void
dissect_megaco_Remotedescriptor(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, gint tvb_next_offset, gint tvb_current_offset);
static void
dissect_megaco_LocalControldescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_next_offset, gint tvb_current_offset);
static void
dissect_megaco_Packagesdescriptor(tvbuff_t *tvb, proto_tree *tree, gint tvb_next_offset, gint tvb_current_offset);
static dissector_handle_t sdp_handle;
/*
* dissect_megaco_text - The dissector for the MEGACO Protocol, using
* text encoding.
*/
static void
dissect_megaco_text(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
gint tvb_len, len;
gint tvb_offset,tvb_current_offset,tvb_previous_offset,tvb_next_offset,tokenlen;
gint tvb_command_start_offset, tvb_command_end_offset;
gint tvb_descriptors_start_offset, tvb_descriptors_end_offset;
proto_tree *megaco_tree, *megaco_tree_command_line, *ti, *sub_ti;
proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, gint, const char*);
guint8 word[7];
guint8 transaction[30];
guint8 TermID[30];
guint8 tempchar, letter;
gint tvb_linebegin,tvb_lineend,linelen;
gint tvb_RBRKT, tvb_LBRKT, RBRKT_counter, LBRKT_counter;
/* Initialize variables */
tvb_len = tvb_length(tvb);
megaco_tree = NULL;
ti = NULL;
tvb_previous_offset = 0;
tvb_current_offset = 0;
tvb_next_offset = 0;
tvb_command_start_offset = 0;
tvb_command_end_offset = 0;
tvb_RBRKT = 0;
tvb_LBRKT = 0;
RBRKT_counter = 0;
LBRKT_counter = 0;
/*
* Check to see whether we're really dealing with MEGACO by looking
* for the "MEGACO" string or a "!".This needs to be improved when supporting
* binary encodings.
*/
if(!tvb_get_nstringz0(tvb,0,7,word)) return;
if (strncasecmp(word, "MEGACO", 6) != 0 && tvb_get_guint8(tvb, 0 ) != '!') return;
/* Display MEGACO in protocol column */
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_add_str(pinfo->cinfo, COL_PROTOCOL, "MEGACO");
/* Display transaction in info column
* tvb_previous_offset ll be on the of the action */
tvb_offset = tvb_find_guint8(tvb, 0, tvb_len, ':');
tvb_current_offset = tvb_find_guint8(tvb, 0, tvb_len, '=');
/* Transaction / TransactionResponseAck */
if (tvb_find_guint8(tvb, 0, tvb_len, 'T') != -1 && tvb_find_guint8(tvb, 0, tvb_len, 'T') < tvb_current_offset)
tvb_previous_offset = tvb_find_guint8(tvb, 0, tvb_len, 'T');
/* Reply */
if (tvb_find_guint8(tvb, 0, tvb_len, 'R') != -1 && tvb_find_guint8(tvb, 0, tvb_len, 'R') < tvb_current_offset)
tvb_previous_offset = tvb_find_guint8(tvb, 0, tvb_len, 'R');
/* Pending */
if (tvb_find_guint8(tvb, 0, tvb_len, 'P') != -1 && tvb_find_guint8(tvb, 0, tvb_len, 'P') < tvb_current_offset)
tvb_previous_offset = tvb_find_guint8(tvb, 0, tvb_len, 'P');
/* ERROR */
if (tvb_find_guint8(tvb, tvb_offset, tvb_len, 'E') != -1 && tvb_find_guint8(tvb, tvb_offset, tvb_len, 'E') < tvb_current_offset)
tvb_previous_offset = tvb_find_guint8(tvb, tvb_offset, tvb_len, 'E');
len = tvb_current_offset - tvb_previous_offset;
tvb_get_nstringz0(tvb,tvb_previous_offset,len+1,transaction);
tvb_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_current_offset = tvb_find_guint8(tvb, tvb_offset,
tvb_len, '{');
len = tvb_current_offset - tvb_offset;
if (tvb_get_guint8(tvb, tvb_current_offset-1 ) == ' ')
len--;
if ( transaction[0] == 'T'){
if (check_col(pinfo->cinfo, COL_INFO) )
col_add_fstr(pinfo->cinfo, COL_INFO, "%s Request",
tvb_format_text(tvb,tvb_offset,len));
}
if ( (transaction[0] == 'P' && transaction[1] != 'e') || transaction[0] == 'R'){
if (check_col(pinfo->cinfo, COL_INFO) )
col_add_fstr(pinfo->cinfo, COL_INFO, "%s Reply",
tvb_format_text(tvb,tvb_offset,len));
}
if ( transaction[1] == 'N' || ( transaction[0] == 'P' && transaction[1] == 'e')){
if (check_col(pinfo->cinfo, COL_INFO) )
col_add_fstr(pinfo->cinfo, COL_INFO, "%s Pending",
tvb_format_text(tvb,tvb_offset,len));
}
if ( transaction[0] == 'E'){
if (check_col(pinfo->cinfo, COL_INFO) )
col_add_fstr(pinfo->cinfo, COL_INFO, "Error"
);
}
/* Build the info tree if we've been given a root */
if (tree){
/* Create megaco subtree */
ti = proto_tree_add_item(tree,proto_megaco,tvb,0,0, FALSE);
megaco_tree = proto_item_add_subtree(ti, ett_megaco);
if(global_megaco_dissect_tree)
my_proto_tree_add_string = proto_tree_add_string;
else
my_proto_tree_add_string = proto_tree_add_string_hidden;
/* Find version */
tvb_previous_offset = tvb_find_guint8(tvb, 0,
tvb_len, '/') + 1;
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_len, ' ');
tokenlen = tvb_current_offset - tvb_previous_offset;
if (tree)
my_proto_tree_add_string(megaco_tree, hf_megaco_version, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
/* Find transaction */
tvb_offset = tvb_find_guint8(tvb, 0,
tvb_len, ':');
tvb_current_offset = tvb_find_guint8(tvb, 0,
tvb_len, '=');
/* Transaction / TransactionResponseAck */
tvb_current_offset = tvb_find_guint8(tvb, 0,
tvb_len, '=');
tvb_previous_offset = tvb_find_guint8(tvb, tvb_offset, tvb_len, transaction[0]);
tokenlen = tvb_current_offset - tvb_previous_offset;
if (tvb_get_guint8(tvb, tvb_current_offset-1 ) == ' ')
tokenlen--;
if ( transaction[0] == 'T'){
my_proto_tree_add_string(megaco_tree, hf_megaco_transaction, tvb,
tvb_previous_offset, tokenlen,
"Request" );
}
if ( (transaction[0] == 'P' && transaction[1] != 'e') || transaction[0] == 'R'){
my_proto_tree_add_string(megaco_tree, hf_megaco_transaction, tvb,
tvb_previous_offset, tokenlen,
"Reply" );
}
if ( transaction[1] == 'N' || ( transaction[0] == 'P' && transaction[2] == 'n')){
my_proto_tree_add_string(megaco_tree, hf_megaco_transaction, tvb,
tvb_previous_offset, tokenlen,
"Pending" );
}
if ( transaction[0] == 'E'){
my_proto_tree_add_string(megaco_tree, hf_megaco_transaction, tvb,
tvb_previous_offset, tokenlen,
"Error" );
tvb_offset = tvb_find_guint8(tvb, 0, tvb_len, '/');
tvb_command_start_offset = tvb_find_guint8(tvb, tvb_offset, tvb_len, 'E');
dissect_megaco_errordescriptor(tvb, megaco_tree, tvb_len-1, tvb_command_start_offset);
return;
}
/* Find transaction id */
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_len, '{');
tokenlen = tvb_current_offset - tvb_previous_offset;
if (tvb_get_guint8(tvb, tvb_current_offset-1 ) == ' '){
tokenlen--;
}
my_proto_tree_add_string(megaco_tree, hf_megaco_transid, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
/* Return if transaction = Pending */
if ( transaction[0] == 'P' && ( transaction[1] == 'e' || transaction[1] == 'N')){
return;
}
/* Return if there is an error */
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tempchar = tvb_get_guint8(tvb, tvb_current_offset );
if ( tempchar == 'E'){
tvb_previous_offset = tvb_current_offset;
tvb_current_offset = tvb_find_guint8(tvb, tvb_current_offset,
tvb_len, '}');
tvb_current_offset = tvb_find_guint8(tvb, tvb_current_offset+1,
tvb_len, '}');
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset-1);
dissect_megaco_errordescriptor(tvb, megaco_tree, tvb_current_offset , tvb_previous_offset);
return;
}
/* Find Context */
nextcontext:
tvb_previous_offset = tvb_find_guint8(tvb, tvb_current_offset,
tvb_len, '=')+1;
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_previous_offset);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_len, '{');
tokenlen = tvb_current_offset - tvb_previous_offset;
tempchar = tvb_get_guint8(tvb, tvb_previous_offset );
if (tvb_get_guint8(tvb, tvb_current_offset-1 ) == ' '){
tokenlen--;
}
switch ( tempchar ){
case '$':
my_proto_tree_add_string(megaco_tree, hf_megaco_Context, tvb,
tvb_previous_offset, 1,
"Choose one");
break;
case '*':
my_proto_tree_add_string(megaco_tree, hf_megaco_Context, tvb,
tvb_previous_offset, 1,
"All");
break;
case '-':
proto_tree_add_text(megaco_tree, tvb, tvb_previous_offset, tokenlen, "Context: NULL" );
break;
default:
my_proto_tree_add_string(megaco_tree, hf_megaco_Context, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
/* Find Commands */
/* If transaction is ERROR the plugin will call the ERROR subroutine */
if ( transaction[0] == 'E'){
tvb_offset = tvb_find_guint8(tvb, 0, tvb_len, '/');
tvb_command_start_offset = tvb_find_guint8(tvb, tvb_offset, tvb_len, 'E');
dissect_megaco_errordescriptor(tvb, megaco_tree, tvb_len-1, tvb_command_start_offset);
return;
}
else{
/* If Transaction is is Request, Reply or Pending */
tvb_command_start_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_command_end_offset = tvb_command_start_offset;
tvb_LBRKT = tvb_command_start_offset;
tvb_RBRKT = tvb_command_start_offset;
}
/* The following loop find the individual contexts, commands and call the for every Descriptor a subroutine */
do {
tvb_command_end_offset = tvb_find_guint8(tvb, tvb_command_end_offset +1,
tvb_len, ',');
if ( tvb_command_end_offset == -1 ){
tvb_command_end_offset = tvb_len;
}
/* checking how many left brackets are before the next comma */
while ( tvb_find_guint8(tvb, tvb_LBRKT+1,tvb_len, '{') != -1
&& (tvb_find_guint8(tvb, tvb_LBRKT+1,tvb_len, '{') < tvb_command_end_offset)){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_len, '{');
LBRKT_counter++;
}
/* checking how many right brackets are before the next comma */
while ( (tvb_find_guint8(tvb, tvb_RBRKT+1,tvb_len, '}') != -1 )
&& (tvb_find_guint8(tvb, tvb_RBRKT+1,tvb_len, '}') < tvb_command_end_offset)
&& LBRKT_counter != 0){
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_len, '}');
RBRKT_counter++;
}
/* If equal or more right brackets before the comma, one command is complete */
if ( LBRKT_counter <= RBRKT_counter ){
tvb_current_offset = tvb_find_guint8(tvb, tvb_command_start_offset,
tvb_len, '{');
/* includes no descriptors */
if ( LBRKT_counter == 0 ){
tvb_current_offset = tvb_command_end_offset;
/* the last command in a context */
if ( tvb_find_guint8(tvb, tvb_command_start_offset, tvb_len, '}') < tvb_current_offset
&& tvb_find_guint8(tvb, tvb_command_start_offset, tvb_len, '}') != -1){
tvb_previous_offset = tvb_find_guint8(tvb, tvb_command_start_offset,
tvb_len, '}');
tvb_previous_offset = tvb_skip_wsp_return(tvb, tvb_previous_offset -1);
tokenlen = tvb_previous_offset - tvb_command_start_offset;
}
/* not the last command in a context*/
else{
tvb_current_offset = tvb_skip_wsp_return(tvb, tvb_current_offset -1);
tokenlen = tvb_current_offset - tvb_command_start_offset;
}
}
/* command includes descriptors */
else{
tvb_current_offset = tvb_skip_wsp_return(tvb, tvb_current_offset -1);
tokenlen = tvb_current_offset - tvb_command_start_offset;
}
/* if a next context is specified */
if ( tvb_get_guint8(tvb, tvb_command_start_offset ) == 'C'){
tvb_current_offset = tvb_command_start_offset;
LBRKT_counter = 0;
RBRKT_counter = 0;
goto nextcontext;
}
/* creation of the megaco_tree_command_line additionally Command and Transaction ID will be printed in this line */
sub_ti = proto_tree_add_item(megaco_tree,hf_megaco_command_line,tvb,tvb_command_start_offset,tokenlen, FALSE);
megaco_tree_command_line = proto_item_add_subtree(sub_ti, ett_megaco_command_line);
tvb_next_offset = tvb_command_start_offset + tokenlen;
/* Additional value */
if ( tvb_get_guint8(tvb, tvb_command_start_offset ) == 'O'){
proto_tree_add_text(megaco_tree_command_line, tvb, tvb_command_start_offset, 2, "O- indicates an optional command" );
tvb_command_start_offset = tvb_command_start_offset+2;
}
/* Additional value */
if ( tvb_get_guint8(tvb, tvb_command_start_offset ) == 'W'){
proto_tree_add_text(megaco_tree_command_line, tvb, tvb_command_start_offset, 2, "W- indicates a wildcarded response to a command" );
tvb_command_start_offset = tvb_command_start_offset+2;
}
tvb_offset = tvb_find_guint8(tvb, tvb_command_start_offset,
tvb_len, '=');
tvb_offset = tvb_skip_wsp_return(tvb, tvb_offset -1);
tokenlen = tvb_offset - tvb_command_start_offset;
tempchar = tvb_get_guint8(tvb, tvb_command_start_offset);
if ( tempchar != 'E' ){
if ( tvb_get_guint8(tvb, 0 ) == '!'){
switch ( tempchar ){
case 'A':
tempchar = tvb_get_guint8(tvb, tvb_command_start_offset+1);
switch ( tempchar ){
case 'V':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"AuditValue");
break;
case 'C':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"AuditCapability");
break;
default:
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"Add");
break;
}
break;
case 'N':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"Notify");
break;
case 'M':
tempchar = tvb_get_guint8(tvb, tvb_command_start_offset+1);
switch ( tempchar ){
case 'F':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"Modify");
break;
case 'V':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"Move");
break;
}
break;
case 'S':
tempchar = tvb_get_guint8(tvb, tvb_command_start_offset+1);
switch ( tempchar ){
case 'C':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"ServiceChange");
break;
default:
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
"Subtract");
break;
}
break;
default:
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree, hf_megaco_error_Frame, tvb,
tvb_previous_offset, tokenlen,
"No Command detectable !");
return;
break;
}
}
else{
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_command, tvb,
tvb_command_start_offset, tokenlen,
tvb_format_text(tvb, tvb_command_start_offset,
tokenlen));
}
tvb_offset = tvb_find_guint8(tvb, tvb_command_start_offset,
tvb_len, '=');
tvb_offset = tvb_skip_wsp(tvb, tvb_offset+1);
tokenlen = tvb_next_offset - tvb_offset;
tempchar = tvb_get_guint8(tvb, tvb_offset);
switch ( tempchar ){
case 'E':
tvb_get_nstringz0(tvb,tvb_offset,tokenlen+1,TermID);
TermID[0] = 'e';
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_termid, tvb,
tvb_offset, tokenlen,
TermID);
break;
case '*':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_termid, tvb,
tvb_offset, tokenlen,
"WildCard all");
break;
case '$':
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_termid, tvb,
tvb_offset, tokenlen,
"WildCard any");
break;
default:
my_proto_tree_add_string(megaco_tree_command_line, hf_megaco_termid, tvb,
tvb_offset, tokenlen,
tvb_format_text(tvb, tvb_offset,
tokenlen));
break;
}
}
/* Dissect the Descriptors */
if ( LBRKT_counter != 0 && tvb_current_offset != tvb_command_end_offset){
tvb_descriptors_start_offset = tvb_find_guint8(tvb, tvb_command_start_offset,
tvb_len, '{');
tvb_descriptors_end_offset = tvb_descriptors_start_offset;
while ( LBRKT_counter > 0 ){
tvb_descriptors_end_offset = tvb_find_guint8(tvb, tvb_descriptors_end_offset+1,
tvb_len, '}');
LBRKT_counter--;
}
tempchar = tvb_get_guint8(tvb, tvb_command_start_offset);
if ( tempchar == 'E'){
dissect_megaco_descriptors(tvb, megaco_tree_command_line, pinfo, tvb_command_start_offset-1,tvb_descriptors_end_offset);
}
else {
dissect_megaco_descriptors(tvb, megaco_tree_command_line, pinfo, tvb_descriptors_start_offset,tvb_descriptors_end_offset);
}
}
RBRKT_counter = 0;
LBRKT_counter = 0;
tvb_command_start_offset = tvb_skip_wsp(tvb, tvb_command_end_offset +1);
tvb_LBRKT = tvb_command_start_offset;
tvb_RBRKT = tvb_command_start_offset;
}
} while ( tvb_command_end_offset < tvb_len );
}
}
static void
dissect_megaco_descriptors(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, packet_info *pinfo, gint tvb_descriptors_start_offset, gint tvb_descriptors_end_offset)
{
gint tvb_len, len;
gint tvb_current_offset,tvb_previous_offset,tvb_next_offset,tokenlen;
proto_tree *megaco_descriptors_tree, *descriptors_ti;
gint tvb_RBRKT, tvb_LBRKT, RBRKT_counter, LBRKT_counter;
guint8 tempchar;
tvb_len = tvb_length(tvb);
megaco_descriptors_tree = NULL;
len = 0;
tvb_RBRKT = 0;
tvb_LBRKT = 0;
RBRKT_counter = 0;
LBRKT_counter = 0;
tokenlen = tvb_descriptors_end_offset - tvb_descriptors_start_offset;
tvb_LBRKT = tvb_skip_wsp(tvb, tvb_descriptors_start_offset +1);
tvb_previous_offset = tvb_LBRKT;
tvb_RBRKT = tvb_descriptors_start_offset;
do {
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_len, '}');
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT,
tvb_len, '{');
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_len, ',');
if (tvb_current_offset == -1 ){
tvb_current_offset = tvb_descriptors_end_offset;
}
/* Descriptor includes no parameters */
if ( tvb_LBRKT > tvb_current_offset || tvb_LBRKT == -1 ){
if ( tvb_current_offset > tvb_RBRKT ){
tvb_current_offset = tvb_RBRKT;
}
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
}
/* Descriptor includes Parameters */
if ( (tvb_current_offset > tvb_LBRKT && tvb_LBRKT != -1)){
while ( tvb_LBRKT != -1 && tvb_RBRKT > tvb_LBRKT ){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_len, '{');
if ( tvb_LBRKT < tvb_RBRKT && tvb_LBRKT != -1)
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_len, '}');
}
}
tempchar = tvb_get_guint8(tvb, tvb_previous_offset );
switch ( tempchar ){
case 'M':
tempchar = tvb_get_guint8(tvb, tvb_previous_offset+1 );
switch ( tempchar ){
case 'o':
dissect_megaco_modemdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'D':
dissect_megaco_modemdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'u':
dissect_megaco_multiplexdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'X':
dissect_megaco_multiplexdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'e':
dissect_megaco_mediadescriptor(tvb, megaco_tree_command_line, pinfo, tvb_RBRKT, tvb_previous_offset);
break;
default:
dissect_megaco_mediadescriptor(tvb, megaco_tree_command_line, pinfo, tvb_RBRKT, tvb_previous_offset);
break;
}
break;
case 'S':
tempchar = tvb_get_guint8(tvb, tvb_previous_offset+1 );
switch ( tempchar ){
case 'i':
dissect_megaco_signaldescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'G':
dissect_megaco_signaldescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'e':
dissect_megaco_servicechangedescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'C':
dissect_megaco_servicechangedescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 't':
dissect_megaco_statisticsdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'A':
dissect_megaco_statisticsdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
default:
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_Frame, tvb,
tvb_previous_offset, tokenlen,
"No Descriptor detectable !");
break;
}
break;
case 'E':
tempchar = tvb_get_guint8(tvb, tvb_previous_offset+1 );
if ( tempchar == 'r' || tempchar == 'R'){
if ( tvb_get_guint8(tvb, tvb_skip_wsp(tvb, tvb_RBRKT +1)) == ';'){
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1, tvb_len, '}');
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_RBRKT -1)-1;
}
dissect_megaco_errordescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
}
else{
dissect_megaco_eventsdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
}
break;
case 'A':
dissect_megaco_auditdescriptor(tvb, megaco_tree_command_line, pinfo, tvb_RBRKT, tvb_previous_offset);
break;
case 'D':
dissect_megaco_digitmapdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'O':
dissect_megaco_observedeventsdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'T':
dissect_megaco_topologydescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
case 'P':
dissect_megaco_Packagesdescriptor(tvb, megaco_tree_command_line, tvb_RBRKT, tvb_previous_offset);
break;
default:
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_Frame, tvb,
tvb_previous_offset, tokenlen,
"No Descriptor detectable !");
break;
}
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
tvb_current_offset = tvb_find_guint8(tvb, tvb_RBRKT,
tvb_len, ',');
if (tvb_current_offset == -1 ){
tvb_current_offset = tvb_descriptors_end_offset;
}
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_LBRKT = tvb_previous_offset;
tvb_RBRKT = tvb_previous_offset;
} while ( tvb_current_offset < tvb_descriptors_end_offset );
}
static void
dissect_megaco_modemdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_modem_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_multiplexdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_multiplex_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_mediadescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line,packet_info *pinfo, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
gint tvb_next_offset, tvb_current_offset, tvb_offset, tvb_help_offset;
guint8 tempchar;
proto_tree *megaco_mediadescriptor_tree, *megaco_mediadescriptor_ti;
tokenlen = 0;
tvb_next_offset = 0;
tvb_current_offset = 0;
tvb_offset = 0;
tvb_help_offset = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_mediadescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_media_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_mediadescriptor_tree = proto_item_add_subtree(megaco_mediadescriptor_ti, ett_megaco_mediadescriptor);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '=');
tvb_next_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
/* If a StreamID is present */
if ( tvb_find_guint8(tvb, tvb_next_offset+1, tvb_RBRKT, '{') > tvb_current_offset && tvb_current_offset > tvb_previous_offset ){
tvb_next_offset = tvb_find_guint8(tvb, tvb_next_offset+1, tvb_RBRKT, '{');
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_offset = tvb_skip_wsp_return(tvb, tvb_next_offset-2);
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_mediadescriptor_tree, hf_megaco_streamid, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
}
tvb_current_offset = tvb_next_offset ;
while ( tvb_find_guint8(tvb, tvb_current_offset+1 , tvb_RBRKT, '{') != -1 && tvb_find_guint8(tvb, tvb_current_offset+1 , tvb_RBRKT, '{') < tvb_RBRKT && tvb_next_offset != -1){
tvb_help_offset = tvb_next_offset;
tvb_current_offset = tvb_find_guint8(tvb, tvb_current_offset+1 , tvb_RBRKT, '{');
tvb_next_offset = tvb_find_guint8(tvb, tvb_current_offset+1 , tvb_RBRKT, '}');
tvb_offset = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
tvb_next_offset = tvb_skip_wsp_return(tvb, tvb_next_offset-1);
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tempchar = tvb_get_guint8(tvb, tvb_offset);
switch ( tempchar ){
case 'R':
/* Remote Descriptor in short message encoding */
dissect_megaco_Remotedescriptor(tvb,megaco_mediadescriptor_tree, pinfo, tvb_next_offset, tvb_current_offset);
break;
case 'L':
/* Local Descriptor in short message encoding */
dissect_megaco_Localdescriptor(tvb,megaco_mediadescriptor_tree , pinfo, tvb_next_offset, tvb_current_offset);
break;
case 'O':
/* Local Control Descriptor in short message encoding */
dissect_megaco_LocalControldescriptor(tvb,megaco_mediadescriptor_tree , tvb_next_offset, tvb_current_offset);
break;
case 'S':
/* Termination State Descriptor in short message encoding */
dissect_megaco_TerminationStatedescriptor(tvb,megaco_mediadescriptor_tree , tvb_next_offset, tvb_current_offset);
break;
case 'l':
/* Local or Local Control Descriptor in long message encoding */
if (tvb_get_guint8(tvb, tvb_offset-1) == 'a'){
dissect_megaco_Localdescriptor(tvb,megaco_mediadescriptor_tree , pinfo, tvb_next_offset, tvb_current_offset);
}
else{
dissect_megaco_LocalControldescriptor(tvb,megaco_mediadescriptor_tree , tvb_next_offset, tvb_current_offset);
}
break;
case 'e':
/* Remote or Termination State Descriptor in long message encoding */
if (tvb_get_guint8(tvb, tvb_offset-2) == 'a'){
dissect_megaco_TerminationStatedescriptor(tvb,megaco_mediadescriptor_tree , tvb_next_offset, tvb_current_offset);
}
else {
dissect_megaco_Remotedescriptor(tvb,megaco_mediadescriptor_tree , pinfo, tvb_next_offset, tvb_current_offset);
}
break;
default:
if ( tvb_find_guint8(tvb, tvb_help_offset, tvb_RBRKT, '{') > tvb_find_guint8(tvb, tvb_help_offset, tvb_RBRKT, '=')){
tvb_help_offset = tvb_find_guint8(tvb, tvb_help_offset, tvb_RBRKT, '=');
tvb_help_offset = tvb_skip_wsp(tvb, tvb_help_offset +1);
tokenlen = tvb_offset - tvb_help_offset + 1;
proto_tree_add_string(megaco_mediadescriptor_tree, hf_megaco_streamid, tvb,
tvb_help_offset, tokenlen,
tvb_format_text(tvb, tvb_help_offset,
tokenlen));
}
else {
tokenlen = (tvb_RBRKT+1) - tvb_offset;
proto_tree_add_string(megaco_mediadescriptor_tree, hf_megaco_error_Frame, tvb,
tvb_offset, tokenlen,
"No Descriptor detectable !");
}
break;
}
}
}
static void
dissect_megaco_eventsdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen, tvb_current_offset, tvb_next_offset, tvb_help_offset;
gint tvb_events_end_offset, tvb_events_start_offset, tvb_LBRKT;
proto_tree *megaco_eventsdescriptor_tree, *megaco_eventsdescriptor_ti;
guint8 tempchar;
gint requested_event_start_offset, requested_event_end_offset;
proto_tree *megaco_requestedevent_tree, *megaco_requestedevent_ti;
tokenlen = 0;
tvb_current_offset = 0;
tvb_next_offset = 0;
tvb_help_offset = 0;
tvb_events_end_offset = 0;
tvb_events_start_offset = 0;
tvb_help_offset = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_eventsdescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_events_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_eventsdescriptor_tree = proto_item_add_subtree(megaco_eventsdescriptor_ti, ett_megaco_eventsdescriptor);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '=');
tvb_next_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
if ( tvb_current_offset < tvb_RBRKT && tvb_current_offset != -1 ){
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_next_offset-1);
tokenlen = tvb_help_offset - tvb_current_offset;
proto_tree_add_string(megaco_eventsdescriptor_tree, hf_megaco_requestid, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_events_end_offset = tvb_RBRKT;
tvb_events_start_offset = tvb_previous_offset;
tvb_RBRKT = tvb_next_offset+1;
tvb_LBRKT = tvb_next_offset+1;
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_next_offset+1);
do {
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_events_end_offset, '}');
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT,
tvb_events_end_offset, '{');
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_events_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_events_end_offset){
tvb_current_offset = tvb_events_end_offset;
}
/* Descriptor includes no parameters */
if ( tvb_LBRKT > tvb_current_offset || tvb_LBRKT == -1 ){
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
}
/* Descriptor includes Parameters */
if ( (tvb_current_offset > tvb_LBRKT && tvb_LBRKT != -1)){
while ( tvb_LBRKT != -1 && tvb_RBRKT > tvb_LBRKT ){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_events_end_offset, '{');
if ( tvb_LBRKT < tvb_RBRKT && tvb_LBRKT != -1)
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_events_end_offset, '}');
}
}
tvb_help_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_events_end_offset, '{');
/* if there are eventparameter */
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
requested_event_start_offset = tvb_help_offset;
requested_event_end_offset = tvb_RBRKT;
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_help_offset-1);
tokenlen = tvb_help_offset - tvb_previous_offset;
}
/* no parameters */
else {
tokenlen = tvb_RBRKT+1 - tvb_previous_offset;
}
megaco_requestedevent_ti = proto_tree_add_item(megaco_eventsdescriptor_tree,hf_megaco_pkgdname,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_requestedevent_tree = proto_item_add_subtree(megaco_requestedevent_ti, ett_megaco_requestedevent);
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
tvb_help_offset = tvb_skip_wsp(tvb, requested_event_start_offset +1);
tempchar = tvb_get_guint8(tvb, tvb_help_offset);
requested_event_start_offset = tvb_skip_wsp(tvb, requested_event_start_offset +1);
requested_event_end_offset = tvb_skip_wsp_return(tvb, requested_event_end_offset-1);
if ( tempchar == 'D' ){
dissect_megaco_digitmapdescriptor(tvb, megaco_requestedevent_tree, requested_event_end_offset, requested_event_start_offset);
}
else{
tokenlen = requested_event_end_offset - requested_event_start_offset
;
proto_tree_add_text(megaco_requestedevent_tree, tvb, requested_event_start_offset, tokenlen,
"%s", tvb_format_text(tvb,requested_event_start_offset, tokenlen));
}
}
tvb_current_offset = tvb_find_guint8(tvb, tvb_RBRKT,
tvb_events_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_events_end_offset ){
tvb_current_offset = tvb_events_end_offset;
}
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_LBRKT = tvb_previous_offset;
tvb_RBRKT = tvb_previous_offset;
} while ( tvb_current_offset < tvb_events_end_offset );
}
}
static void
dissect_megaco_signaldescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen, tvb_current_offset, tvb_next_offset, tvb_help_offset;
gint tvb_signals_end_offset, tvb_signals_start_offset, tvb_LBRKT;
proto_tree *megaco_signalsdescriptor_tree, *megaco_signalsdescriptor_ti;
guint8 tempchar;
gint requested_signal_start_offset, requested_signal_end_offset;
proto_tree *megaco_requestedsignal_tree, *megaco_requestedsignal_ti;
tokenlen = 0;
tvb_current_offset = 0;
tvb_next_offset = 0;
tvb_help_offset = 0;
tvb_signals_end_offset = 0;
tvb_signals_start_offset= 0;
tvb_LBRKT = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_signalsdescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_signal_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_signalsdescriptor_tree = proto_item_add_subtree(megaco_signalsdescriptor_ti, ett_megaco_signalsdescriptor);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
tvb_next_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_signals_end_offset = tvb_RBRKT;
tvb_signals_start_offset = tvb_previous_offset;
if ( tvb_current_offset < tvb_RBRKT && tvb_current_offset != -1 && tvb_next_offset != tvb_signals_end_offset){
tvb_RBRKT = tvb_next_offset+1;
tvb_LBRKT = tvb_next_offset+1;
tvb_previous_offset = tvb_next_offset;
do {
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_signals_end_offset, '}');
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT,
tvb_signals_end_offset, '{');
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_signals_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_signals_end_offset){
tvb_current_offset = tvb_signals_end_offset;
}
/* Descriptor includes no parameters */
if ( tvb_LBRKT > tvb_current_offset || tvb_LBRKT == -1 ){
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
}
/* Descriptor includes Parameters */
if ( (tvb_current_offset > tvb_LBRKT && tvb_LBRKT != -1)){
while ( tvb_LBRKT != -1 && tvb_RBRKT > tvb_LBRKT ){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_signals_end_offset, '{');
if ( tvb_LBRKT < tvb_RBRKT && tvb_LBRKT != -1)
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_signals_end_offset, '}');
}
}
tvb_help_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_signals_end_offset, '{');
/* if there are signalparameter */
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
requested_signal_start_offset = tvb_help_offset;
requested_signal_end_offset = tvb_RBRKT;
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_help_offset-1);
tokenlen = tvb_help_offset - tvb_previous_offset;
}
/* no parameters */
else {
tokenlen = tvb_RBRKT+1 - tvb_previous_offset;
}
megaco_requestedsignal_ti = proto_tree_add_item(megaco_signalsdescriptor_tree,hf_megaco_pkgdname,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_requestedsignal_tree = proto_item_add_subtree(megaco_requestedsignal_ti, ett_megaco_requestedsignal);
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
requested_signal_start_offset = tvb_skip_wsp(tvb, requested_signal_start_offset +1);
requested_signal_end_offset = tvb_skip_wsp_return(tvb, requested_signal_end_offset-1);
tokenlen = requested_signal_end_offset - requested_signal_start_offset;
proto_tree_add_text(megaco_requestedsignal_tree, tvb, requested_signal_start_offset, tokenlen,
"%s", tvb_format_text(tvb,requested_signal_start_offset, tokenlen+1));
}
tvb_current_offset = tvb_find_guint8(tvb, tvb_RBRKT,
tvb_signals_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_signals_end_offset ){
tvb_current_offset = tvb_signals_end_offset;
}
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_LBRKT = tvb_previous_offset;
tvb_RBRKT = tvb_previous_offset;
} while ( tvb_current_offset < tvb_signals_end_offset );
}
}
static void
dissect_megaco_auditdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, packet_info *pinfo, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
proto_tree *megaco_auditdescriptor_tree, *megaco_auditdescriptor_ti;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_auditdescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_audit_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_auditdescriptor_tree = proto_item_add_subtree(megaco_auditdescriptor_ti, ett_megaco_auditdescriptor);
tvb_previous_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
if ( tvb_skip_wsp(tvb, tvb_previous_offset +1) != tvb_RBRKT ){
dissect_megaco_descriptors(tvb, megaco_auditdescriptor_tree, pinfo, tvb_previous_offset,tvb_RBRKT);
}
}
static void
dissect_megaco_servicechangedescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_servicechange_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_digitmapdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = tvb_RBRKT - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_digitmap_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_statisticsdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_statistics_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_observedeventsdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen, tvb_current_offset, tvb_next_offset, tvb_help_offset;
gint tvb_observedevents_end_offset, tvb_observedevents_start_offset, tvb_LBRKT;
proto_tree *megaco_observedeventsdescriptor_tree, *megaco_observedeventsdescriptor_ti;
guint8 tempchar;
gint requested_event_start_offset, requested_event_end_offset, param_start_offset, param_end_offset;
proto_tree *megaco_observedevent_tree, *megaco_observedevent_ti;
tokenlen = 0;
tvb_current_offset = 0;
tvb_next_offset = 0;
tvb_help_offset = 0;
tvb_observedevents_end_offset = 0;
tvb_observedevents_start_offset = 0;
tvb_LBRKT = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_observedeventsdescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_observedevents_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_observedeventsdescriptor_tree = proto_item_add_subtree(megaco_observedeventsdescriptor_ti, ett_megaco_observedeventsdescriptor);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '=');
tvb_next_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
if ( tvb_current_offset < tvb_RBRKT && tvb_current_offset != -1 ){
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_next_offset-1);
tokenlen = tvb_help_offset - tvb_current_offset;
proto_tree_add_string(megaco_observedeventsdescriptor_tree, hf_megaco_requestid, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_observedevents_end_offset = tvb_RBRKT;
tvb_observedevents_start_offset = tvb_previous_offset;
tvb_RBRKT = tvb_next_offset+1;
tvb_LBRKT = tvb_next_offset+1;
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_next_offset+1);
do {
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_observedevents_end_offset, '}');
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT,
tvb_observedevents_end_offset, '{');
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_observedevents_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_observedevents_end_offset){
tvb_current_offset = tvb_observedevents_end_offset;
}
/* Descriptor includes no parameters */
if ( tvb_LBRKT > tvb_current_offset || tvb_LBRKT == -1 ){
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
}
/* Descriptor includes Parameters */
if ( (tvb_current_offset > tvb_LBRKT && tvb_LBRKT != -1)){
while ( tvb_LBRKT != -1 && tvb_RBRKT > tvb_LBRKT ){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_observedevents_end_offset, '{');
if ( tvb_LBRKT < tvb_RBRKT && tvb_LBRKT != -1){
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_observedevents_end_offset, '}');
}
}
}
tvb_help_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_observedevents_end_offset, '{');
/* if there are eventparameter */
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
requested_event_start_offset = tvb_help_offset;
requested_event_end_offset = tvb_RBRKT;
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_help_offset-1);
tokenlen = tvb_help_offset - tvb_previous_offset;
}
/* no parameters */
else {
tokenlen = tvb_RBRKT+1 - tvb_previous_offset;
}
megaco_observedevent_ti = proto_tree_add_item(megaco_observedeventsdescriptor_tree,hf_megaco_pkgdname,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_observedevent_tree = proto_item_add_subtree(megaco_observedevent_ti, ett_megaco_observedevent);
if ( tvb_help_offset < tvb_RBRKT && tvb_help_offset != -1 ){
tvb_help_offset = tvb_skip_wsp(tvb, requested_event_start_offset +1);
tempchar = tvb_get_guint8(tvb, tvb_help_offset);
requested_event_start_offset = tvb_skip_wsp(tvb, requested_event_start_offset +1)-1;
requested_event_end_offset = tvb_skip_wsp_return(tvb, requested_event_end_offset-1);
tvb_help_offset = requested_event_start_offset;
do {
param_start_offset = tvb_skip_wsp(tvb, tvb_help_offset+1);
tvb_help_offset = tvb_find_guint8(tvb, tvb_help_offset+1,requested_event_end_offset, ',');
if ( tvb_help_offset > requested_event_end_offset || tvb_help_offset == -1){
tvb_help_offset = requested_event_end_offset;
}
param_end_offset = tvb_skip_wsp(tvb, tvb_help_offset-1);
tokenlen = param_end_offset - param_start_offset+1;
proto_tree_add_text(megaco_observedevent_tree, tvb, param_start_offset, tokenlen,
"%s", tvb_format_text(tvb,param_start_offset, tokenlen));
} while ( tvb_help_offset < requested_event_end_offset );
}
tvb_current_offset = tvb_find_guint8(tvb, tvb_RBRKT,
tvb_observedevents_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_observedevents_end_offset ){
tvb_current_offset = tvb_observedevents_end_offset;
}
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_LBRKT = tvb_previous_offset;
tvb_RBRKT = tvb_previous_offset;
} while ( tvb_current_offset < tvb_observedevents_end_offset );
}
}
static void
dissect_megaco_topologydescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
tokenlen = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_topology_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
}
static void
dissect_megaco_Packagesdescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen, tvb_current_offset, tvb_next_offset, tvb_help_offset;
gint tvb_packages_end_offset, tvb_packages_start_offset, tvb_LBRKT;
proto_tree *megaco_packagesdescriptor_tree, *megaco_packagesdescriptor_ti;
tokenlen = 0;
tvb_current_offset = 0;
tvb_next_offset = 0;
tvb_help_offset = 0;
tvb_packages_end_offset = 0;
tvb_packages_start_offset = 0;
tvb_LBRKT = 0;
tokenlen = (tvb_RBRKT+1) - tvb_previous_offset;
megaco_packagesdescriptor_ti = proto_tree_add_item(megaco_tree_command_line,hf_megaco_packages_descriptor,tvb,tvb_previous_offset,tokenlen, FALSE);
megaco_packagesdescriptor_tree = proto_item_add_subtree(megaco_packagesdescriptor_ti, ett_megaco_packagesdescriptor);
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '=');
tvb_next_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_RBRKT, '{');
if ( tvb_current_offset < tvb_RBRKT && tvb_current_offset != -1 ){
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_help_offset = tvb_skip_wsp_return(tvb, tvb_next_offset-1);
tokenlen = tvb_help_offset - tvb_current_offset;
proto_tree_add_string(megaco_packagesdescriptor_tree, hf_megaco_requestid, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_packages_end_offset = tvb_RBRKT;
tvb_packages_start_offset = tvb_previous_offset;
tvb_RBRKT = tvb_next_offset+1;
tvb_LBRKT = tvb_next_offset+1;
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_next_offset+1);
do {
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_packages_end_offset, '}');
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT,
tvb_packages_end_offset, '{');
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset,
tvb_packages_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_packages_end_offset){
tvb_current_offset = tvb_packages_end_offset;
}
/* Descriptor includes no parameters */
if ( tvb_LBRKT > tvb_current_offset || tvb_LBRKT == -1 ){
tvb_RBRKT = tvb_skip_wsp_return(tvb, tvb_current_offset-1)-1;
}
/* Descriptor includes Parameters */
if ( (tvb_current_offset > tvb_LBRKT && tvb_LBRKT != -1)){
while ( tvb_LBRKT != -1 && tvb_RBRKT > tvb_LBRKT ){
tvb_LBRKT = tvb_find_guint8(tvb, tvb_LBRKT+1,
tvb_packages_end_offset, '{');
if ( tvb_LBRKT < tvb_RBRKT && tvb_LBRKT != -1)
tvb_RBRKT = tvb_find_guint8(tvb, tvb_RBRKT+1,
tvb_packages_end_offset, '}');
}
}
tokenlen = tvb_RBRKT+1 - tvb_previous_offset;
proto_tree_add_text(megaco_packagesdescriptor_tree, tvb, tvb_previous_offset, tokenlen,
"%s", tvb_format_text(tvb,tvb_previous_offset,
tokenlen));
tvb_current_offset = tvb_find_guint8(tvb, tvb_RBRKT,
tvb_packages_end_offset, ',');
if (tvb_current_offset == -1 || tvb_current_offset > tvb_packages_end_offset ){
tvb_current_offset = tvb_packages_end_offset;
}
tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset+1);
tvb_LBRKT = tvb_previous_offset;
tvb_RBRKT = tvb_previous_offset;
} while ( tvb_current_offset < tvb_packages_end_offset );
}
}
static void
dissect_megaco_errordescriptor(tvbuff_t *tvb, proto_tree *megaco_tree_command_line, gint tvb_RBRKT, gint tvb_previous_offset)
{
gint tokenlen;
guint8 error[4];
gint tvb_next_offset, tvb_current_offset,tvb_len;
tvb_len = tvb_length(tvb);
tokenlen = 0;
tvb_next_offset = 0;
tvb_current_offset = 0;
tvb_len = 0;
tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset , tvb_RBRKT, '=');
tvb_current_offset = tvb_skip_wsp(tvb, tvb_current_offset +1);
tvb_get_nstringz0(tvb,tvb_current_offset,4,error);
proto_tree_add_string_hidden(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
tvb_format_text(tvb, tvb_current_offset,
3));
tokenlen = (tvb_RBRKT) - tvb_previous_offset+1;
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_previous_offset, tokenlen,
tvb_format_text(tvb, tvb_previous_offset,
tokenlen));
switch ( error[0] ){
case '4':
switch ( error[1] ){
case '0':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Bad Request");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Protocol Error");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unauthorized");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Syntax Error in Transaction");
break;
case '6':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Version Not Supported");
break;
}
break;
case '1':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Incorrect identifier");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"The Transaction refers to an unkown ContextID");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No ContextIDs available");
break;
}
break;
case '2':
switch ( error[2] ){
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unkown action or illegal combination of actions");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Syntax Error in Action");
break;
}
break;
case '3':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unknown TerminationID");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No TertminationID matched a Wildcard");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Out of TerminationIDs or no TerminationID available");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"TerminationID is already in Context");
break;
}
break;
case '4':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or unknown Package");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Missing RemoteDascriptor");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Syntax Error in Command");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or Unknown Command");
break;
case '4':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or Unknown Descriptor");
break;
case '5':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or Unknown Property");
break;
case '6':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or Unknown Parameter");
break;
case '7':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Descriptor not legal in this command");
break;
case '8':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Descriptor appears twice in this command");
break;
}
break;
case '5':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No such property in this package");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No such event in this package");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No such signal in this package");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No such statistic in this package");
break;
case '4':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"No such parameter value in this package");
break;
case '5':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Parameter illegal in this Descriptor");
break;
case '6':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Parameter or Property appears twice in this Descriptor");
break;
}
break;
case '7':
switch ( error[2] ){
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Implied Add for Multiplex failure");
break;
}
break;
}
break;
case '5':
switch ( error[1] ){
case '0':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Internal Gateway Error");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Not Implemented");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Not ready");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Service Unavailable");
break;
case '4':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Command Received from unauthorized entity");
break;
case '5':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Command Received before Restart response");
break;
}
break;
case '1':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Insufficient resources");
break;
case '2':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Media Gateway unequipped to detect request Event");
break;
case '3':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Media Gateway unequipped to generate requested Signals");
break;
case '4':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Media Gateway cannot send the specified announcement");
break;
case '5':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported Media Type");
break;
case '7':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Unsupported or invalid mode");
break;
case '8':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Event buffer full");
break;
case '9':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Out of space to store digit map");
break;
}
break;
case '2':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Media Gateway does not have a digit map");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Termination is ServiceChanging");
break;
case '6':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"insufficient bandwidth");
break;
case '9':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Internal hardeware failure");
break;
}
break;
case '3':
switch ( error[2] ){
case '0':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Temporary Network failure");
break;
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Permanent Network failure");
break;
}
break;
case '8':
switch ( error[2] ){
case '1':
proto_tree_add_string(megaco_tree_command_line, hf_megaco_error_descriptor, tvb,
tvb_current_offset, 3,
"Does Not Exist");
break;
}
break;
}
break;
}
}
static void
dissect_megaco_TerminationStatedescriptor(tvbuff_t *tvb, proto_tree *megaco_mediadescriptor_tree, gint tvb_next_offset, gint tvb_current_offset)
{
gint tokenlen;
gint tvb_offset, tvb_help_offset;
guint8 tempchar;
proto_tree *megaco_TerminationState_tree, *megaco_TerminationState_ti;
tokenlen = 0;
tvb_offset = 0;
tvb_help_offset = 0;
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_next_offset, '=');
tokenlen = tvb_next_offset - tvb_current_offset;
megaco_TerminationState_ti = proto_tree_add_item(megaco_mediadescriptor_tree,hf_megaco_TerminationState_descriptor,tvb,tvb_current_offset,tokenlen, FALSE);
megaco_TerminationState_tree = proto_item_add_subtree(megaco_TerminationState_ti, ett_megaco_TerminationState);
while ( tvb_offset < tvb_next_offset && tvb_offset != -1 ){
tempchar = tvb_get_guint8(tvb, tvb_current_offset);
tvb_help_offset = tvb_current_offset;
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
switch ( tempchar ){
case 'S':
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tempchar = tvb_get_guint8(tvb, tvb_current_offset);
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_TerminationState_tree, hf_megaco_Service_State, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
break;
case 'B':
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tempchar = tvb_get_guint8(tvb, tvb_current_offset);
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_TerminationState_tree, hf_megaco_Event_Buffer_Control, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
break;
case 'E':
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tempchar = tvb_get_guint8(tvb, tvb_current_offset);
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_TerminationState_tree, hf_megaco_Event_Buffer_Control, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
break;
default:
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tempchar = tvb_get_guint8(tvb, tvb_help_offset);
tokenlen = tvb_offset - tvb_help_offset;
proto_tree_add_text(megaco_TerminationState_tree, tvb, tvb_help_offset, tokenlen,
"%s", tvb_format_text(tvb,tvb_help_offset,
tokenlen));
break;
}
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_next_offset, '=');
}
}
static void
dissect_megaco_Localdescriptor(tvbuff_t *tvb, proto_tree *megaco_mediadescriptor_tree,packet_info *pinfo, gint tvb_next_offset, gint tvb_current_offset)
{
gint tokenlen;
tvbuff_t *next_tvb;
proto_tree *megaco_localdescriptor_tree, *megaco_localdescriptor_ti;
tokenlen = 0;
tokenlen = tvb_next_offset - tvb_current_offset;
megaco_localdescriptor_ti = proto_tree_add_item(megaco_mediadescriptor_tree,hf_megaco_Local_descriptor,tvb,tvb_current_offset,tokenlen, FALSE);
megaco_localdescriptor_tree = proto_item_add_subtree(megaco_localdescriptor_ti, ett_megaco_Localdescriptor);
tokenlen = tvb_next_offset - tvb_current_offset;
next_tvb = tvb_new_subset(tvb, tvb_current_offset, tokenlen, tokenlen);
call_dissector(sdp_handle, next_tvb, pinfo, megaco_localdescriptor_tree);
}
static void
dissect_megaco_Remotedescriptor(tvbuff_t *tvb, proto_tree *megaco_mediadescriptor_tree,packet_info *pinfo, gint tvb_next_offset, gint tvb_current_offset)
{
gint tokenlen;
tvbuff_t *next_tvb;
proto_tree *megaco_Remotedescriptor_tree, *megaco_Remotedescriptor_ti;
tokenlen = 0;
tokenlen = tvb_next_offset - tvb_current_offset;
megaco_Remotedescriptor_ti = proto_tree_add_item(megaco_mediadescriptor_tree,hf_megaco_Remote_descriptor,tvb,tvb_current_offset,tokenlen, FALSE);
megaco_Remotedescriptor_tree = proto_item_add_subtree(megaco_Remotedescriptor_ti, ett_megaco_Remotedescriptor);
next_tvb = tvb_new_subset(tvb, tvb_current_offset, tokenlen, tokenlen);
call_dissector(sdp_handle, next_tvb, pinfo, megaco_Remotedescriptor_tree);
}
static void
dissect_megaco_LocalControldescriptor(tvbuff_t *tvb, proto_tree *megaco_mediadescriptor_tree, gint tvb_next_offset, gint tvb_current_offset)
{
gint tokenlen;
gint tvb_offset,tvb_help_offset;
guint8 tempchar;
proto_tree *megaco_LocalControl_tree, *megaco_LocalControl_ti;
tokenlen = 0;
tvb_offset = 0;
tvb_help_offset = 0;
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_next_offset, '=');
tokenlen = tvb_next_offset - tvb_current_offset;
megaco_LocalControl_ti = proto_tree_add_item(megaco_mediadescriptor_tree,hf_megaco_LocalControl_descriptor,tvb,tvb_current_offset,tokenlen, FALSE);
megaco_LocalControl_tree = proto_item_add_subtree(megaco_LocalControl_ti, ett_megaco_LocalControldescriptor);
while ( tvb_offset < tvb_next_offset && tvb_offset != -1 ){
tempchar = tvb_get_guint8(tvb, tvb_current_offset);
tvb_help_offset = tvb_current_offset;
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
switch ( tempchar ){
case 'M':
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_LocalControl_tree, hf_megaco_mode, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
break;
case 'R':
if ( tvb_get_guint8(tvb, tvb_help_offset+1) == 'V' || tvb_get_guint8(tvb, tvb_help_offset+8) == 'V'){
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_LocalControl_tree, hf_megaco_reserve_value, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
}
else {
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tokenlen = tvb_offset - tvb_current_offset;
proto_tree_add_string(megaco_LocalControl_tree, hf_megaco_reserve_group, tvb,
tvb_current_offset, tokenlen,
tvb_format_text(tvb, tvb_current_offset,
tokenlen));
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
}
break;
default:
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_offset, ',');
if ( tvb_offset == -1 || tvb_offset > tvb_next_offset ){
tvb_offset = tvb_next_offset;
}
tokenlen = tvb_offset - tvb_help_offset;
proto_tree_add_text(megaco_LocalControl_tree, tvb, tvb_help_offset, tokenlen,
"%s", tvb_format_text(tvb,tvb_help_offset,
tokenlen));
tvb_current_offset = tvb_skip_wsp(tvb, tvb_offset +1);
break;
}
tvb_offset = tvb_find_guint8(tvb, tvb_current_offset , tvb_next_offset, '=');
}
}
/* Register all the bits needed with the filtering engine */
void
proto_register_megaco(void)
{
static hf_register_info hf[] = {
{ &hf_megaco_audit_descriptor,
{ "Audit Descriptor", "megaco.audit", FT_STRING, BASE_DEC, NULL, 0x0,
"Audit Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_command_line,
{ "Command line", "megaco.command_line", FT_STRING, BASE_DEC, NULL, 0x0,
"Commands of this message ", HFILL }},
{ &hf_megaco_command,
{ "Command", "megaco.command", FT_STRING, BASE_DEC, NULL, 0x0,
"Command of this message ", HFILL }},
{ &hf_megaco_Context,
{ "Context", "megaco.context", FT_STRING, BASE_DEC, NULL, 0x0,
"Context ID of this massage ", HFILL }},
{ &hf_megaco_digitmap_descriptor,
{ "DigitMap Descriptor", "megaco.digitmap", FT_STRING, BASE_DEC, NULL, 0x0,
"DigitMap Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_error_descriptor,
{ "ERROR Descriptor", "megaco.error", FT_STRING, BASE_DEC, NULL, 0x0,
"Error Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_error_Frame,
{ "ERROR frame", "megaco.error_frame", FT_STRING, BASE_DEC, NULL, 0x0,
"Syntax error ", HFILL }},
{ &hf_megaco_Event_Buffer_Control,
{ "Event Buffer Control", "megaco.eventbuffercontrol", FT_STRING, BASE_DEC, NULL, 0x0,
"Event Buffer Control in Termination State Descriptor", HFILL }},
{ &hf_megaco_events_descriptor,
{ "Events Descriptor", "megaco.events", FT_STRING, BASE_DEC, NULL, 0x0,
"Events Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_Local_descriptor,
{ "Local Descriptor", "megaco.localdescriptor", FT_STRING, BASE_DEC, NULL, 0x0,
"Local Descriptor in Media Descriptor ", HFILL }},
{ &hf_megaco_LocalControl_descriptor,
{ "Local Control Descriptor", "megaco.localcontroldescriptor", FT_STRING, BASE_DEC, NULL, 0x0,
"Local Control Descriptor in Media Descriptor ", HFILL }},
{ &hf_megaco_media_descriptor,
{ "Media Descriptor", "megaco.media", FT_STRING, BASE_DEC, NULL, 0x0,
"Media Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_modem_descriptor,
{ "Modem Descriptor", "megaco.modem", FT_STRING, BASE_DEC, NULL, 0x0,
"Modem Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_mode,
{ "Mode", "megaco.mode", FT_STRING, BASE_DEC, NULL, 0x0,
"Mode sendonly/receiveonly/inactive/loopback", HFILL }},
{ &hf_megaco_multiplex_descriptor,
{ "Multiplex Descriptor", "megaco.multiplex", FT_STRING, BASE_DEC, NULL, 0x0,
"Multiplex Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_observedevents_descriptor,
{ "Observed Events Descriptor", "megaco.observedevents", FT_STRING, BASE_DEC, NULL, 0x0,
"Observed Events Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_packages_descriptor,
{ "Packages Descriptor", "megaco.packagesdescriptor", FT_STRING, BASE_DEC, NULL, 0x0,
"Packages Descriptor", HFILL }},
{ &hf_megaco_pkgdname,
{ "pkgdName", "megaco.pkgdname", FT_STRING, BASE_DEC, NULL, 0x0,
"PackageName SLASH ItemID", HFILL }},
{ &hf_megaco_Remote_descriptor,
{ "Remote Descriptor", "megaco.remotedescriptor", FT_STRING, BASE_DEC, NULL, 0x0,
"Remote Descriptor in Media Descriptor ", HFILL }},
{ &hf_megaco_reserve_group,
{ "Reserve Group", "megaco.reservegroup", FT_STRING, BASE_DEC, NULL, 0x0,
"Reserve Group on or off", HFILL }},
{ &hf_megaco_reserve_value,
{ "Reserve Value", "megaco.reservevalue", FT_STRING, BASE_DEC, NULL, 0x0,
"Reserve Value on or off", HFILL }},
{ &hf_megaco_requestid,
{ "RequestID", "megaco.requestid", FT_STRING, BASE_DEC, NULL, 0x0,
"RequestID in Events or Observedevents Descriptor ", HFILL }},
{ &hf_megaco_servicechange_descriptor,
{ "Service Chnage Descriptor", "megaco.servicechange", FT_STRING, BASE_DEC, NULL, 0x0,
"Service Change Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_Service_State,
{ "Service State", "megaco.servicestates", FT_STRING, BASE_DEC, NULL, 0x0,
"Service States in Termination State Descriptor", HFILL }},
{ &hf_megaco_signal_descriptor,
{ "Signal Descriptor", "megaco.signal", FT_STRING, BASE_DEC, NULL, 0x0,
"Signal Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_statistics_descriptor,
{ "Statistics Descriptor", "megaco.statistics", FT_STRING, BASE_DEC, NULL, 0x0,
"Statistics Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_streamid,
{ "StreamID", "megaco.streamid", FT_STRING, BASE_DEC, NULL, 0x0,
"StreamID in the Media Descriptor ", HFILL }},
{ &hf_megaco_termid,
{ "Termination ID", "megaco.termid", FT_STRING, BASE_DEC, NULL, 0x0,
"Termination ID of this Command ", HFILL }},
{ &hf_megaco_TerminationState_descriptor,
{ "Termination State Descriptor", "megaco.terminationstate", FT_STRING, BASE_DEC, NULL, 0x0,
"Termination State Descriptor in Media Descriptor ", HFILL }},
{ &hf_megaco_topology_descriptor,
{ "Topology Descriptor", "megaco.topology", FT_STRING, BASE_DEC, NULL, 0x0,
"Topology Descriptor of the megaco Command ", HFILL }},
{ &hf_megaco_transaction,
{ "Transaction", "megaco.transaction", FT_STRING, BASE_DEC, NULL, 0x0,
"Message Originator", HFILL }},
{ &hf_megaco_transid,
{ "Transaction ID", "megaco.transid", FT_STRING, BASE_DEC, NULL, 0x0,
"Transaction ID of this message", HFILL }},
{ &hf_megaco_version,
{ "Version", "megaco.version", FT_STRING, BASE_DEC, NULL, 0x0,
"Version", HFILL }},
/* Add more fields here */
};
static gint *ett[] = {
&ett_megaco,
&ett_megaco_command_line,
&ett_megaco_descriptors,
&ett_megaco_mediadescriptor,
&ett_megaco_TerminationState,
&ett_megaco_Remotedescriptor,
&ett_megaco_Localdescriptor,
&ett_megaco_LocalControldescriptor,
&ett_megaco_auditdescriptor,
&ett_megaco_eventsdescriptor,
&ett_megaco_observedeventsdescriptor,
&ett_megaco_observedevent,
&ett_megaco_packagesdescriptor,
&ett_megaco_requestedevent,
&ett_megaco_signalsdescriptor,
&ett_megaco_requestedsignal,
};
module_t *megaco_module;
proto_megaco = proto_register_protocol("MEGACO",
"MEGACO", "megaco");
proto_register_field_array(proto_megaco, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register our configuration options, particularly our ports */
megaco_module = prefs_register_protocol(proto_megaco, proto_reg_handoff_megaco);
prefs_register_uint_preference(megaco_module, "tcp.txt_port",
"MEGACO Text TCP Port",
"Set the TCP port for MEGACO text messages",
10, &global_megaco_txt_tcp_port);
prefs_register_uint_preference(megaco_module, "udp.txt_port",
"MEGACO Text UDP Port",
"Set the UDP port for MEGACO text messages",
10, &global_megaco_txt_udp_port);
#if 0
prefs_register_uint_preference(megaco_module, "tcp.bin_port",
"MEGACO Binary TCP Port",
"Set the TCP port for MEGACO binary messages",
10, &global_megaco_bin_tcp_port);
prefs_register_uint_preference(megaco_module, "udp.bin_port",
"MEGACO Binary UDP Port",
"Set the UDP port for MEGACO binary messages",
10, &global_megaco_bin_udp_port);
#endif
prefs_register_bool_preference(megaco_module, "display_raw_text",
"Display raw text for MEGACO message",
"Specifies that the raw text of the "
"MEGACO message should be displayed "
"instead of (or in addition to) the "
"dissection tree",
&global_megaco_raw_text);
prefs_register_bool_preference(megaco_module, "display_dissect_tree",
"Display tree dissection for MEGACO message",
"Specifies that the dissection tree of the "
"MEGACO message should be displayed "
"instead of (or in addition to) the "
"raw text",
&global_megaco_dissect_tree);
}
/* The registration hand-off routine */
void
proto_reg_handoff_megaco(void)
{
static int megaco_prefs_initialized = FALSE;
static dissector_handle_t megaco_text_handle;
sdp_handle = find_dissector("sdp");
if (!megaco_prefs_initialized) {
megaco_text_handle = create_dissector_handle(dissect_megaco_text,
proto_megaco);
megaco_prefs_initialized = TRUE;
}
else {
dissector_delete("tcp.port", txt_tcp_port, megaco_text_handle);
dissector_delete("udp.port", txt_udp_port, megaco_text_handle);
#if 0
dissector_delete("tcp.port", bin_tcp_port, megaco_bin_handle);
dissector_delete("udp.port", bin_udp_port, megaco_bin_handle);
#endif
}
/* Set our port number for future use */
txt_tcp_port = global_megaco_txt_tcp_port;
txt_udp_port = global_megaco_txt_udp_port;
#if 0
bin_tcp_port = global_megaco_bin_tcp_port;
bin_udp_port = global_megaco_bin_udp_port;
#endif
dissector_add("tcp.port", global_megaco_txt_tcp_port, megaco_text_handle);
dissector_add("udp.port", global_megaco_txt_udp_port, megaco_text_handle);
#if 0
dissector_add("tcp.port", global_megaco_bin_tcp_port, megaco_bin_handle);
dissector_add("udp.port", global_megaco_bin_udp_port, megaco_bin_handle);
#endif
/* XXX - text or binary? Does that depend on the port number? */
dissector_add("sctp.ppi", H248_PAYLOAD_PROTOCOL_ID, megaco_text_handle);
}
/*
* tvb_skip_wsp - Returns the position in tvb of the first non-whitespace
* character following offset or offset + maxlength -1 whichever
* is smaller.
*
* Parameters:
* tvb - The tvbuff in which we are skipping whitespaces, tab and end_of_line characters.
* offset - The offset in tvb from which we begin trying to skip whitespace.
*
* Returns: The position in tvb of the first non-whitespace
*/
static gint tvb_skip_wsp(tvbuff_t* tvb, gint offset ){
gint counter = offset;
gint end,tvb_len;
guint8 tempchar;
tvb_len = tvb_length(tvb);
end = tvb_len;
for(counter = offset; counter < end &&
((tempchar = tvb_get_guint8(tvb,counter)) == ' ' ||
tempchar == '\t'|| tempchar == '\n');counter++);
return (counter);
}
static gint tvb_skip_wsp_return(tvbuff_t* tvb, gint offset){
gint counter = offset;
gint end;
guint8 tempchar;
end = 0;
for(counter = offset; counter > end &&
((tempchar = tvb_get_guint8(tvb,counter)) == ' ' ||
tempchar == '\t'|| tempchar == '\n');counter--);
counter++;
return (counter);
}
/* Start the functions we need for the plugin stuff */
#ifndef __ETHEREAL_STATIC__
G_MODULE_EXPORT void
plugin_reg_handoff(void){
proto_reg_handoff_megaco();
}
G_MODULE_EXPORT void
plugin_init(plugin_address_table_t *pat
#ifndef PLUGINS_NEED_ADDRESS_TABLE
_U_
#endif
){
/* initialise the table of pointers needed in Win32 DLLs */
plugin_address_table_init(pat);
/* register the new protocol, protocol fields, and subtrees */
if (proto_megaco == -1) { /* execute protocol initialization only once */
proto_register_megaco();
}
}
#endif
/* End the functions we need for plugin stuff */
Attachment:
megaco.dll
Description: Binary data
/* Included *after* config.h, in order to re-define these macros */ #ifdef PACKAGE #undef PACKAGE #endif /* Name of package */ #define PACKAGE "megaco" #ifdef VERSION #undef VERSION #endif /* Version number of package */ #define VERSION "0.0.2"
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