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/* packet-x411.c
* Routines for X.411 (X.400 Message Transfer) packet dissection
* Graeme Lunt 2005
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/conversation.h>
#include <stdio.h>
#include <string.h>
#include "packet-ber.h"
#include "packet-acse.h"
#include "packet-ros.h"
#include "packet-rtse.h"
#include "packet-x509af.h"
#include "packet-x509ce.h"
#include "packet-x509if.h"
#include "packet-x509sat.h"
#include "packet-x411.h"
#include <epan/emem.h>
#include <epan/strutil.h>
#define PNAME "X.411 Message Transfer Service"
#define PSNAME "X411"
#define PFNAME "x411"
/* Initialize the protocol and registered fields */
int proto_x411 = -1;
static struct SESSION_DATA_STRUCTURE* session = NULL;
static int extension_id = -1; /* integer extension id */
static const char *object_identifier_id; /* extensions identifier */
static const char *content_type_id; /* content type identifier */
#define MAX_ORA_STR_LEN 256
static char *oraddress = NULL;
static gboolean doing_address=FALSE;
static proto_item *address_item;
static proto_tree *top_tree=NULL;
static int
call_x411_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
#include "packet-x411-hf.c"
/* Initialize the subtree pointers */
static gint ett_x411 = -1;
#include "packet-x411-ett.c"
#include "packet-x411-fn.c"
static int
call_x411_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
{
const char *name = NULL;
char extension_oid[BER_MAX_OID_STR_LEN];
sprintf(extension_oid, "%s.%d", base_oid, extension_id);
name = get_ber_oid_name(extension_oid);
proto_item_append_text(tree, " (%s)", name ? name : extension_oid);
return call_ber_oid_callback(extension_oid, tvb, offset, pinfo, tree);
}
/*
* Dissect X411 MTS APDU
*/
int
dissect_x411_mts_apdu (tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
{
proto_item *item=NULL;
proto_tree *tree=NULL;
/* save parent_tree so subdissectors can create new top nodes */
top_tree=parent_tree;
if(parent_tree){
item = proto_tree_add_item(parent_tree, proto_x411, tvb, 0, -1, FALSE);
tree = proto_item_add_subtree(item, ett_x411);
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1");
if (check_col(pinfo->cinfo, COL_INFO))
col_set_str(pinfo->cinfo, COL_INFO, "Transfer");
return dissect_x411_MTS_APDU (FALSE, tvb, 0, pinfo, tree, hf_x411_MTS_APDU_PDU);
}
/*
* Dissect X411 PDUs inside a PPDU.
*/
static void
dissect_x411(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
{
int offset = 0;
int old_offset;
proto_item *item=NULL;
proto_tree *tree=NULL;
int (*x411_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL;
char *x411_op_name;
int hf_x411_index;
/* save parent_tree so subdissectors can create new top nodes */
top_tree=parent_tree;
/* do we have operation information from the ROS dissector? */
if( !pinfo->private_data ){
if(parent_tree){
proto_tree_add_text(parent_tree, tvb, offset, -1,
"Internal error: can't get operation information from ROS dissector.");
}
return ;
} else {
session = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) );
}
if(parent_tree){
item = proto_tree_add_item(parent_tree, proto_x411, tvb, 0, -1, FALSE);
tree = proto_item_add_subtree(item, ett_x411);
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1");
if (check_col(pinfo->cinfo, COL_INFO))
col_clear(pinfo->cinfo, COL_INFO);
switch(session->ros_op & ROS_OP_MASK) {
case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */
x411_dissector = dissect_x411_MTABindArgument;
x411_op_name = "Bind-Argument";
hf_x411_index = hf_x411_MTABindArgument_PDU;
break;
case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */
x411_dissector = dissect_x411_MTABindResult;
x411_op_name = "Bind-Result";
hf_x411_index = hf_x411_MTABindResult_PDU;
break;
case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */
x411_dissector = dissect_x411_MTABindError;
x411_op_name = "Bind-Error";
hf_x411_index = hf_x411_MTABindError_PDU;
break;
case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */
x411_dissector = dissect_x411_MTS_APDU;
x411_op_name = "Transfer";
hf_x411_index = hf_x411_MTS_APDU_PDU;
break;
default:
proto_tree_add_text(tree, tvb, offset, -1,"Unsupported X411 PDU");
return;
}
if (check_col(pinfo->cinfo, COL_INFO))
col_add_str(pinfo->cinfo, COL_INFO, x411_op_name);
while (tvb_reported_length_remaining(tvb, offset) > 0){
old_offset=offset;
offset=(*x411_dissector)(FALSE, tvb, offset, pinfo , tree, hf_x411_index);
if(offset == old_offset){
proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte X411 PDU");
offset = tvb_length(tvb);
break;
}
}
}
/*--- proto_register_x411 -------------------------------------------*/
void proto_register_x411(void) {
/* List of fields */
static hf_register_info hf[] =
{
#include "packet-x411-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_x411,
#include "packet-x411-ettarr.c"
};
/* Register protocol */
proto_x411 = proto_register_protocol(PNAME, PSNAME, PFNAME);
register_dissector("x411", dissect_x411, proto_x411);
/* Register fields and subtrees */
proto_register_field_array(proto_x411, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*--- proto_reg_handoff_x411 --- */
void proto_reg_handoff_x411(void) {
dissector_handle_t handle = NULL;
#include "packet-x411-dis-tab.c"
/* APPLICATION CONTEXT */
register_ber_oid_name("2.6.0.1.6", "id-ac-mts-transfer");
/* ABSTRACT SYNTAXES */
if((handle = find_dissector("x411")) != NULL) {
register_rtse_oid_dissector_handle("2.6.0.2.12", handle, 0, "id-as-mta-rtse", TRUE);
register_rtse_oid_dissector_handle("2.6.0.2.7", handle, 0, "id-as-mtse", FALSE);
register_rtse_oid_dissector_handle("applicationProtocol.1", handle, 0, "mts-transfer-protocol-1984", FALSE);
register_rtse_oid_dissector_handle("applicationProtocol.12", handle, 0, "mta-transfer-protocol", FALSE);
}
}
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