2 * Routines for X.525 (X.500 Directory Shadow Asbtract Service) and X.519 DISP packet dissection
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 #include <epan/packet.h>
32 #include <epan/prefs.h>
33 #include <epan/oids.h>
34 #include <epan/asn1.h>
39 #include "packet-ber.h"
40 #include "packet-acse.h"
41 #include "packet-ros.h"
42 #include "packet-rtse.h"
44 #include "packet-x509if.h"
45 #include "packet-x509af.h"
46 #include "packet-x509sat.h"
47 #include "packet-crmf.h"
49 #include "packet-dop.h"
50 #include "packet-dap.h"
51 #include "packet-dsp.h"
52 #include "packet-disp.h"
55 /* we don't have a separate dissector for X519 -
56 and most of DISP is defined in X525 */
57 #define PNAME "X.519 Directory Information Shadowing Protocol"
61 static guint global_disp_tcp_port = 102;
62 static dissector_handle_t tpkt_handle;
63 void prefs_register_disp(void); /* forward declaration for use in preferences registration */
66 /* Initialize the protocol and registered fields */
69 static struct SESSION_DATA_STRUCTURE* session = NULL;
71 #include "packet-disp-hf.c"
73 /* Initialize the subtree pointers */
74 static gint ett_disp = -1;
75 #include "packet-disp-ett.c"
77 #include "packet-disp-fn.c"
80 * Dissect DISP PDUs inside a ROS PDUs
83 dissect_disp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
87 proto_item *item=NULL;
88 proto_tree *tree=NULL;
89 int (*disp_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL;
93 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
95 /* do we have operation information from the ROS dissector? */
96 if( !pinfo->private_data ){
98 proto_tree_add_text(parent_tree, tvb, offset, -1,
99 "Internal error: can't get operation information from ROS dissector.");
103 session = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) );
107 item = proto_tree_add_item(parent_tree, proto_disp, tvb, 0, -1, FALSE);
108 tree = proto_item_add_subtree(item, ett_disp);
110 if (check_col(pinfo->cinfo, COL_PROTOCOL))
111 col_set_str(pinfo->cinfo, COL_PROTOCOL, "DISP");
112 if (check_col(pinfo->cinfo, COL_INFO))
113 col_clear(pinfo->cinfo, COL_INFO);
115 switch(session->ros_op & ROS_OP_MASK) {
116 case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */
117 disp_dissector = dissect_disp_DSAShadowBindArgument;
118 disp_op_name = "Shadow-Bind-Argument";
120 case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */
121 disp_dissector = dissect_disp_DSAShadowBindResult;
122 disp_op_name = "Shadow-Bind-Result";
124 case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */
125 disp_dissector = dissect_disp_DSAShadowBindError;
126 disp_op_name = "Shadow-Bind-Error";
128 case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */
129 switch(session->ros_op & ROS_OP_OPCODE_MASK) {
130 case 1: /* requestShadowUpdate */
131 disp_dissector = dissect_disp_RequestShadowUpdateArgument;
132 disp_op_name = "Request-Shadow-Update-Argument";
134 case 2: /* updateShadow*/
135 disp_dissector = dissect_disp_UpdateShadowArgument;
136 disp_op_name = "Update-Shadow-Argument";
138 case 3: /* coordinateShadowUpdate */
139 disp_dissector = dissect_disp_CoordinateShadowUpdateArgument;
140 disp_op_name = "Coordinate-Shadow-Update-Argument";
143 proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode (%d)",
144 session->ros_op & ROS_OP_OPCODE_MASK);
148 case (ROS_OP_INVOKE | ROS_OP_RESULT): /* Return Result */
149 switch(session->ros_op & ROS_OP_OPCODE_MASK) {
150 case 1: /* requestShadowUpdate */
151 disp_dissector = dissect_disp_RequestShadowUpdateResult;
152 disp_op_name = "Request-Shadow-Result";
154 case 2: /* updateShadow */
155 disp_dissector = dissect_disp_UpdateShadowResult;
156 disp_op_name = "Update-Shadow-Result";
158 case 3: /* coordinateShadowUpdate */
159 disp_dissector = dissect_disp_CoordinateShadowUpdateResult;
160 disp_op_name = "Coordinate-Shadow-Update-Result";
163 proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode (%d)",
164 session->ros_op & ROS_OP_OPCODE_MASK);
168 case (ROS_OP_INVOKE | ROS_OP_ERROR): /* Return Error */
169 switch(session->ros_op & ROS_OP_OPCODE_MASK) {
170 case 1: /* shadowError */
171 disp_dissector = dissect_disp_ShadowError;
172 disp_op_name = "Shadow-Error";
175 proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP errcode (%d)",
176 session->ros_op & ROS_OP_OPCODE_MASK);
181 proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP PDU");
186 if (check_col(pinfo->cinfo, COL_INFO))
187 col_set_str(pinfo->cinfo, COL_INFO, disp_op_name);
189 while (tvb_reported_length_remaining(tvb, offset) > 0){
191 offset=(*disp_dissector)(FALSE, tvb, offset, &asn1_ctx, tree, -1);
192 if(offset == old_offset){
193 proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DISP PDU");
194 offset = tvb_length(tvb);
202 /*--- proto_register_disp -------------------------------------------*/
203 void proto_register_disp(void) {
206 static hf_register_info hf[] =
208 #include "packet-disp-hfarr.c"
211 /* List of subtrees */
212 static gint *ett[] = {
214 #include "packet-disp-ettarr.c"
216 module_t *disp_module;
218 /* Register protocol */
219 proto_disp = proto_register_protocol(PNAME, PSNAME, PFNAME);
220 register_dissector("disp", dissect_disp, proto_disp);
222 /* Register fields and subtrees */
223 proto_register_field_array(proto_disp, hf, array_length(hf));
224 proto_register_subtree_array(ett, array_length(ett));
226 /* Register our configuration options for DISP, particularly our port */
228 disp_module = prefs_register_protocol_subtree("OSI/X.500", proto_disp, prefs_register_disp);
230 prefs_register_uint_preference(disp_module, "tcp.port", "DISP TCP Port",
231 "Set the port for DISP operations (if other"
232 " than the default of 102)",
233 10, &global_disp_tcp_port);
238 /*--- proto_reg_handoff_disp --- */
239 void proto_reg_handoff_disp(void) {
240 dissector_handle_t disp_handle;
242 #include "packet-disp-dis-tab.c"
244 /* APPLICATION CONTEXT */
246 oid_add_from_string("id-ac-shadow-consumer-initiated","2.5.3.4");
247 oid_add_from_string("id-ac-shadow-supplier-initiated","2.5.3.5");
248 oid_add_from_string("id-ac-reliable-shadow-consumer-initiated","2.5.3.6");
249 oid_add_from_string("id-ac-reliable-shadow-supplier-initiated","2.5.3.7");
251 /* ABSTRACT SYNTAXES */
253 disp_handle = find_dissector("disp");
255 register_ros_oid_dissector_handle("2.5.9.3", disp_handle, 0, "id-as-directory-shadow", FALSE);
256 register_rtse_oid_dissector_handle("2.5.9.5", disp_handle, 0, "id-as-directory-reliable-shadow", FALSE);
257 register_rtse_oid_dissector_handle("2.5.9.6", disp_handle, 0, "id-as-directory-reliable-binding", FALSE);
259 /* OPERATIONAL BINDING */
260 oid_add_from_string("id-op-binding-shadow","2.5.1.0.5.1");
262 tpkt_handle = find_dissector("tpkt");
265 x509if_register_fmt(hf_disp_contextPrefix, "cp=");
270 void prefs_register_disp(void) {
271 static guint tcp_port = 0;
273 /* de-register the old port */
274 /* port 102 is registered by TPKT - don't undo this! */
275 if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
276 dissector_delete("tcp.port", tcp_port, tpkt_handle);
278 /* Set our port number for future use */
279 tcp_port = global_disp_tcp_port;
281 if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
282 dissector_add("tcp.port", global_disp_tcp_port, tpkt_handle);