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/* packet-disp.c
* Routines for X.525 (X.500 Directory Shadow Asbtract Service) and X.519 DISP 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/prefs.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-x509if.h"
#include "packet-x509af.h"
#include "packet-x509sat.h"
#include "packet-crmf.h"
#include "packet-dop.h"
#include "packet-dap.h"
#include "packet-dsp.h"
#include "packet-disp.h"
#include "packet-acse.h"
/* we don't have a separate dissector for X519 -
and most of DISP is defined in X525 */
#define PNAME "X.519 Directory Information Shadowing Protocol"
#define PSNAME "DISP"
#define PFNAME "disp"
static guint global_disp_tcp_port = 102;
static guint tcp_port = 0;
static dissector_handle_t tpkt_handle = NULL;
void prefs_register_disp(void); /* forwad declaration for use in preferences registration */
/* Initialize the protocol and registered fields */
int proto_disp = -1;
static struct SESSION_DATA_STRUCTURE* session = NULL;
#include "packet-disp-hf.c"
/* Initialize the subtree pointers */
static gint ett_disp = -1;
#include "packet-disp-ett.c"
#include "packet-disp-fn.c"
/*
* Dissect DISP PDUs inside a ROS PDUs
*/
static void
dissect_disp(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 (*disp_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL;
char *disp_op_name;
/* 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_disp, tvb, 0, -1, FALSE);
tree = proto_item_add_subtree(item, ett_disp);
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DISP");
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 */
disp_dissector = dissect_disp_DSAShadowBindArgument;
disp_op_name = "Shadow-Bind-Argument";
break;
case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */
disp_dissector = dissect_disp_DSAShadowBindResult;
disp_op_name = "Shadow-Bind-Result";
break;
case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */
disp_dissector = dissect_disp_DSAShadowBindError;
disp_op_name = "Shadow-Bind-Error";
break;
case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */
switch(session->ros_op & ROS_OP_OPCODE_MASK) {
case 1: /* requestShadowUpdate */
disp_dissector = dissect_disp_RequestShadowUpdateArgument;
disp_op_name = "Request-Shadow-Update-Argument";
break;
case 2: /* updateShadow*/
disp_dissector = dissect_disp_UpdateShadowArgument;
disp_op_name = "Update-Shadow-Argument";
break;
case 3: /* coordinateShadowUpdate */
disp_dissector = dissect_disp_CoordinateShadowUpdateArgument;
disp_op_name = "Coordinate-Shadow-Update-Argument";
break;
default:
proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode (%d)",
session->ros_op & ROS_OP_OPCODE_MASK);
break;
}
break;
case (ROS_OP_INVOKE | ROS_OP_RESULT): /* Return Result */
switch(session->ros_op & ROS_OP_OPCODE_MASK) {
case 1: /* requestShadowUpdate */
disp_dissector = dissect_disp_RequestShadowUpdateResult;
disp_op_name = "Request-Shadow-Result";
break;
case 2: /* updateShadow */
disp_dissector = dissect_disp_UpdateShadowResult;
disp_op_name = "Update-Shadow-Result";
break;
case 3: /* coordinateShadowUpdate */
disp_dissector = dissect_disp_CoordinateShadowUpdateResult;
disp_op_name = "Coordinate-Shadow-Update-Result";
break;
default:
proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode");
break;
}
break;
case (ROS_OP_INVOKE | ROS_OP_ERROR): /* Return Error */
switch(session->ros_op & ROS_OP_OPCODE_MASK) {
case 1: /* shadowError */
disp_dissector = dissect_disp_ShadowError;
disp_op_name = "Shadow-Error";
break;
default:
proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP errcode");
break;
}
break;
default:
proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP PDU");
return;
}
if(disp_dissector) {
if (check_col(pinfo->cinfo, COL_INFO))
col_add_str(pinfo->cinfo, COL_INFO, disp_op_name);
while (tvb_reported_length_remaining(tvb, offset) > 0){
old_offset=offset;
offset=(*disp_dissector)(FALSE, tvb, offset, pinfo , tree, -1);
if(offset == old_offset){
proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DISP PDU");
offset = tvb_length(tvb);
break;
}
}
}
}
/*--- proto_register_disp -------------------------------------------*/
void proto_register_disp(void) {
/* List of fields */
static hf_register_info hf[] =
{
#include "packet-disp-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_disp,
#include "packet-disp-ettarr.c"
};
module_t *disp_module;
/* Register protocol */
proto_disp = proto_register_protocol(PNAME, PSNAME, PFNAME);
register_dissector("disp", dissect_disp, proto_disp);
/* Register fields and subtrees */
proto_register_field_array(proto_disp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register our configuration options for DISP, particularly our port */
#ifdef PREFERENCE_GROUPING
disp_module = prefs_register_protocol_subtree("OSI/X.500", proto_disp, prefs_register_disp);
#else
disp_module = prefs_register_protocol(proto_disp, prefs_register_disp);
#endif
prefs_register_uint_preference(disp_module, "tcp.port", "DISP TCP Port",
"Set the port for DISP operations (if other"
" than the default of 102)",
10, &global_disp_tcp_port);
}
/*--- proto_reg_handoff_disp --- */
void proto_reg_handoff_disp(void) {
dissector_handle_t handle = NULL;
#include "packet-disp-dis-tab.c"
/* APPLICATION CONTEXT */
register_ber_oid_name("2.5.3.4", "id-ac-shadow-consumer-initiated");
register_ber_oid_name("2.5.3.5", "id-ac-shadow-supplier-initiated");
register_ber_oid_name("2.5.3.6", "id-ac-reliable-shadow-consumer-initiated");
register_ber_oid_name("2.5.3.7", "id-ac-reliable-shadow-supplier-initiated");
/* ABSTRACT SYNTAXES */
if((handle = find_dissector("disp"))) {
register_ros_oid_dissector_handle("2.5.9.3", handle, 0, "id-as-directory-shadow", FALSE);
register_rtse_oid_dissector_handle("2.5.9.5", handle, 0, "id-as-directory-reliable-shadow", FALSE);
register_rtse_oid_dissector_handle("2.5.9.6", handle, 0, "id-as-directory-reliable-binding", FALSE);
}
/* OPERATIONAL BINDING */
register_ber_oid_name("2.5.1.0.5.1", "id-op-binding-shadow");
tpkt_handle = find_dissector("tpkt");
/* DNs */
x509if_register_fmt(hf_disp_contextPrefix, "cp=");
}
void prefs_register_disp(void) {
/* de-register the old port */
/* port 102 is registered by TPKT - don't undo this! */
if((tcp_port != 102) && tpkt_handle)
dissector_delete("tcp.port", tcp_port, tpkt_handle);
/* Set our port number for future use */
tcp_port = global_disp_tcp_port;
if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
dissector_add("tcp.port", global_disp_tcp_port, tpkt_handle);
}
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