forked from osmocom/wireshark
cd02af56a1
This mostly involved adding expert info capabilities to many of the dissectors so that they could correctly flag error conditions. Only remaining proto_tree_add_text calls are in H248.cnf, which has a convoluted way of using hf_ data to make its tree. Change-Id: I6412150c2ec1977d7fa38f3f0ed416680bdfb141 Reviewed-on: https://code.wireshark.org/review/3500 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Michael Mann <mmann78@netscape.net>
292 lines
9.4 KiB
C
292 lines
9.4 KiB
C
/* packet-disp.c
|
|
* Routines for X.525 (X.500 Directory Shadow Asbtract Service) and X.519 DISP packet dissection
|
|
* Graeme Lunt 2005
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <glib.h>
|
|
#include <epan/packet.h>
|
|
#include <epan/expert.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/oids.h>
|
|
#include <epan/asn1.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"
|
|
|
|
|
|
/* 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"
|
|
|
|
void proto_register_disp(void);
|
|
void proto_reg_handoff_disp(void);
|
|
|
|
static guint global_disp_tcp_port = 102;
|
|
static dissector_handle_t tpkt_handle;
|
|
static void prefs_register_disp(void); /* forward declaration for use in preferences registration */
|
|
|
|
|
|
/* Initialize the protocol and registered fields */
|
|
static int proto_disp = -1;
|
|
|
|
#include "packet-disp-hf.c"
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_disp = -1;
|
|
#include "packet-disp-ett.c"
|
|
|
|
static expert_field ei_disp_unsupported_opcode = EI_INIT;
|
|
static expert_field ei_disp_unsupported_errcode = EI_INIT;
|
|
static expert_field ei_disp_unsupported_pdu = EI_INIT;
|
|
static expert_field ei_disp_zero_pdu = EI_INIT;
|
|
|
|
#include "packet-disp-fn.c"
|
|
|
|
/*
|
|
* Dissect DISP PDUs inside a ROS PDUs
|
|
*/
|
|
static int
|
|
dissect_disp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
|
|
{
|
|
int offset = 0;
|
|
int old_offset;
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
struct SESSION_DATA_STRUCTURE* session;
|
|
int (*disp_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL;
|
|
const char *disp_op_name;
|
|
asn1_ctx_t asn1_ctx;
|
|
|
|
/* do we have operation information from the ROS dissector */
|
|
if (data == NULL)
|
|
return 0;
|
|
session = (struct SESSION_DATA_STRUCTURE*)data;
|
|
|
|
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
|
|
|
|
asn1_ctx.private_data = session;
|
|
|
|
item = proto_tree_add_item(parent_tree, proto_disp, tvb, 0, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_disp);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DISP");
|
|
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_expert_format(tree, pinfo, &ei_disp_unsupported_opcode, 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_expert_format(tree, pinfo, &ei_disp_unsupported_opcode, tvb, offset, -1,
|
|
"Unsupported DISP opcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK);
|
|
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_expert_format(tree, pinfo, &ei_disp_unsupported_errcode, tvb, offset, -1,
|
|
"Unsupported DISP errcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
proto_tree_add_expert(tree, pinfo, &ei_disp_unsupported_pdu, tvb, offset, -1);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
if(disp_dissector) {
|
|
col_set_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, &asn1_ctx, tree, -1);
|
|
if(offset == old_offset){
|
|
proto_tree_add_expert(tree, pinfo, &ei_disp_zero_pdu, tvb, offset, -1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
|
|
/*--- 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"
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_disp_unsupported_opcode, { "disp.unsupported_opcode", PI_UNDECODED, PI_WARN, "Unsupported DISP opcode", EXPFILL }},
|
|
{ &ei_disp_unsupported_errcode, { "disp.unsupported_errcode", PI_UNDECODED, PI_WARN, "Unsupported DISP errcode", EXPFILL }},
|
|
{ &ei_disp_unsupported_pdu, { "disp.unsupported_pdu", PI_UNDECODED, PI_WARN, "Unsupported DISP PDU", EXPFILL }},
|
|
{ &ei_disp_zero_pdu, { "disp.zero_pdu", PI_PROTOCOL, PI_ERROR, "Internal error, zero-byte DISP PDU", EXPFILL }},
|
|
};
|
|
|
|
module_t *disp_module;
|
|
expert_module_t* expert_disp;
|
|
|
|
/* Register protocol */
|
|
proto_disp = proto_register_protocol(PNAME, PSNAME, PFNAME);
|
|
new_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));
|
|
expert_disp = expert_register_protocol(proto_disp);
|
|
expert_register_field_array(expert_disp, ei, array_length(ei));
|
|
|
|
/* Register our configuration options for DISP, particularly our port */
|
|
|
|
disp_module = prefs_register_protocol_subtree("OSI/X.500", proto_disp, prefs_register_disp);
|
|
|
|
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 disp_handle;
|
|
|
|
#include "packet-disp-dis-tab.c"
|
|
|
|
/* APPLICATION CONTEXT */
|
|
|
|
oid_add_from_string("id-ac-shadow-consumer-initiated","2.5.3.4");
|
|
oid_add_from_string("id-ac-shadow-supplier-initiated","2.5.3.5");
|
|
oid_add_from_string("id-ac-reliable-shadow-consumer-initiated","2.5.3.6");
|
|
oid_add_from_string("id-ac-reliable-shadow-supplier-initiated","2.5.3.7");
|
|
|
|
/* ABSTRACT SYNTAXES */
|
|
|
|
disp_handle = find_dissector("disp");
|
|
|
|
register_ros_oid_dissector_handle("2.5.9.3", disp_handle, 0, "id-as-directory-shadow", FALSE);
|
|
register_rtse_oid_dissector_handle("2.5.9.5", disp_handle, 0, "id-as-directory-reliable-shadow", FALSE);
|
|
register_rtse_oid_dissector_handle("2.5.9.6", disp_handle, 0, "id-as-directory-reliable-binding", FALSE);
|
|
|
|
/* OPERATIONAL BINDING */
|
|
oid_add_from_string("id-op-binding-shadow","2.5.1.0.5.1");
|
|
|
|
tpkt_handle = find_dissector("tpkt");
|
|
|
|
/* DNs */
|
|
x509if_register_fmt(hf_disp_contextPrefix, "cp=");
|
|
|
|
}
|
|
|
|
|
|
static void
|
|
prefs_register_disp(void)
|
|
{
|
|
static guint tcp_port = 0;
|
|
|
|
/* de-register the old port */
|
|
/* port 102 is registered by TPKT - don't undo this! */
|
|
if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
|
|
dissector_delete_uint("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_uint("tcp.port", global_disp_tcp_port, tpkt_handle);
|
|
|
|
}
|