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