1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
|
/* packet-dop.c
* Routines for X.501 (DSA Operational Attributes) packet dissection
* Graeme Lunt 2005
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/oids.h>
#include <epan/asn1.h>
#include <epan/expert.h>
#include "packet-ber.h"
#include "packet-acse.h"
#include "packet-ros.h"
#include "packet-x509sat.h"
#include "packet-x509af.h"
#include "packet-x509if.h"
#include "packet-dap.h"
#include "packet-dsp.h"
#include "packet-crmf.h"
#include "packet-dop.h"
#define PNAME "X.501 Directory Operational Binding Management Protocol"
#define PSNAME "DOP"
#define PFNAME "dop"
void proto_register_dop(void);
void proto_reg_handoff_dop(void);
/* Initialize the protocol and registered fields */
static int proto_dop = -1;
static const char *binding_type = NULL; /* binding_type */
static int call_dop_oid_callback(const char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, const char *col_info, void* data);
#include "packet-dop-hf.c"
/* Initialize the subtree pointers */
static gint ett_dop = -1;
static gint ett_dop_unknown = -1;
#include "packet-dop-ett.c"
static expert_field ei_dop_unknown_binding_parameter = EI_INIT;
static expert_field ei_dop_unsupported_opcode = EI_INIT;
static expert_field ei_dop_unsupported_errcode = EI_INIT;
static expert_field ei_dop_unsupported_pdu = EI_INIT;
static expert_field ei_dop_zero_pdu = EI_INIT;
static dissector_handle_t dop_handle = NULL;
/* Dissector table */
static dissector_table_t dop_dissector_table;
static void append_oid(packet_info *pinfo, const char *oid)
{
const char *name = NULL;
name = oid_resolved_from_string(wmem_packet_scope(), oid);
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", name ? name : oid);
}
#include "packet-dop-fn.c"
static int
call_dop_oid_callback(const char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, const char *col_info, void* data)
{
char* binding_param;
binding_param = wmem_strdup_printf(wmem_packet_scope(), "%s.%s", base_string, binding_type ? binding_type : "");
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", col_info);
if (dissector_try_string(dop_dissector_table, binding_param, tvb, pinfo, tree, data)) {
offset = tvb_reported_length (tvb);
} else {
proto_item *item;
proto_tree *next_tree;
next_tree = proto_tree_add_subtree_format(tree, tvb, 0, -1, ett_dop_unknown, &item,
"Dissector for parameter %s OID:%s not implemented. Contact Wireshark developers if you want this supported", base_string, binding_type ? binding_type : "<empty>");
offset = dissect_unknown_ber(pinfo, tvb, offset, next_tree);
expert_add_info(pinfo, item, &ei_dop_unknown_binding_parameter);
}
return offset;
}
/*
* Dissect DOP PDUs inside a ROS PDUs
*/
static int
dissect_dop(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 (*dop_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL;
const char *dop_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);
item = proto_tree_add_item(parent_tree, proto_dop, tvb, 0, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_dop);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DOP");
col_clear(pinfo->cinfo, COL_INFO);
asn1_ctx.private_data = session;
switch(session->ros_op & ROS_OP_MASK) {
case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */
dop_dissector = dissect_dop_DSAOperationalManagementBindArgument;
dop_op_name = "DSA-Operational-Bind-Argument";
break;
case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */
dop_dissector = dissect_dop_DSAOperationalManagementBindResult;
dop_op_name = "DSA-Operational-Bind-Result";
break;
case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */
dop_dissector = dissect_dop_DSAOperationalManagementBindError;
dop_op_name = "DSA-Operational-Management-Bind-Error";
break;
case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */
switch(session->ros_op & ROS_OP_OPCODE_MASK) {
case 100: /* establish */
dop_dissector = dissect_dop_EstablishOperationalBindingArgument;
dop_op_name = "Establish-Operational-Binding-Argument";
break;
case 101: /* terminate */
dop_dissector = dissect_dop_TerminateOperationalBindingArgument;
dop_op_name = "Terminate-Operational-Binding-Argument";
break;
case 102: /* modify */
dop_dissector = dissect_dop_ModifyOperationalBindingArgument;
dop_op_name = "Modify-Operational-Binding-Argument";
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_dop_unsupported_opcode, tvb, offset, -1,
"Unsupported DOP Argument 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 100: /* establish */
dop_dissector = dissect_dop_EstablishOperationalBindingResult;
dop_op_name = "Establish-Operational-Binding-Result";
break;
case 101: /* terminate */
dop_dissector = dissect_dop_TerminateOperationalBindingResult;
dop_op_name = "Terminate-Operational-Binding-Result";
break;
case 102: /* modify */
dop_dissector = dissect_dop_ModifyOperationalBindingResult;
dop_op_name = "Modify-Operational-Binding-Result";
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_dop_unsupported_opcode, tvb, offset, -1,
"Unsupported DOP Result 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 100: /* operational-binding */
dop_dissector = dissect_dop_OpBindingErrorParam;
dop_op_name = "Operational-Binding-Error";
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_dop_unsupported_errcode, tvb, offset, -1,
"Unsupported DOP Error opcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK);
break;
}
break;
default:
proto_tree_add_expert(tree, pinfo, &ei_dop_unsupported_pdu, tvb, offset, -1);
return tvb_captured_length(tvb);
}
if(dop_dissector) {
col_set_str(pinfo->cinfo, COL_INFO, dop_op_name);
while (tvb_reported_length_remaining(tvb, offset) > 0){
old_offset=offset;
offset=(*dop_dissector)(FALSE, tvb, offset, &asn1_ctx, tree, -1);
if(offset == old_offset){
proto_tree_add_expert(tree, pinfo, &ei_dop_zero_pdu, tvb, offset, -1);
break;
}
}
}
return tvb_captured_length(tvb);
}
/*--- proto_register_dop -------------------------------------------*/
void proto_register_dop(void) {
/* List of fields */
static hf_register_info hf[] =
{
#include "packet-dop-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_dop,
&ett_dop_unknown,
#include "packet-dop-ettarr.c"
};
static ei_register_info ei[] = {
{ &ei_dop_unknown_binding_parameter, { "dop.unknown_binding_parameter", PI_UNDECODED, PI_WARN, "Unknown binding-parameter", EXPFILL }},
{ &ei_dop_unsupported_opcode, { "dop.unsupported_opcode", PI_UNDECODED, PI_WARN, "Unsupported DOP opcode", EXPFILL }},
{ &ei_dop_unsupported_errcode, { "dop.unsupported_errcode", PI_UNDECODED, PI_WARN, "Unsupported DOP errcode", EXPFILL }},
{ &ei_dop_unsupported_pdu, { "dop.unsupported_pdu", PI_UNDECODED, PI_WARN, "Unsupported DOP PDU", EXPFILL }},
{ &ei_dop_zero_pdu, { "dop.zero_pdu", PI_PROTOCOL, PI_ERROR, "Internal error, zero-byte DOP PDU", EXPFILL }},
};
expert_module_t* expert_dop;
module_t *dop_module;
/* Register protocol */
proto_dop = proto_register_protocol(PNAME, PSNAME, PFNAME);
dop_handle = register_dissector("dop", dissect_dop, proto_dop);
dop_dissector_table = register_dissector_table("dop.oid", "DOP OID", proto_dop, FT_STRING, BASE_NONE);
/* Register fields and subtrees */
proto_register_field_array(proto_dop, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_dop = expert_register_protocol(proto_dop);
expert_register_field_array(expert_dop, ei, array_length(ei));
/* Register our configuration options for DOP, particularly our port */
dop_module = prefs_register_protocol_subtree("OSI/X.500", proto_dop, NULL);
prefs_register_obsolete_preference(dop_module, "tcp.port");
prefs_register_static_text_preference(dop_module, "tcp_port_info",
"The TCP ports used by the DOP protocol should be added to the TPKT preference \"TPKT TCP ports\", or by selecting \"TPKT\" as the \"Transport\" protocol in the \"Decode As\" dialog.",
"DOP TCP Port preference moved information");
}
/*--- proto_reg_handoff_dop --- */
void proto_reg_handoff_dop(void) {
#include "packet-dop-dis-tab.c"
/* APPLICATION CONTEXT */
oid_add_from_string("id-ac-directory-operational-binding-management","2.5.3.3");
/* ABSTRACT SYNTAXES */
/* Register DOP with ROS (with no use of RTSE) */
register_ros_oid_dissector_handle("2.5.9.4", dop_handle, 0, "id-as-directory-operational-binding-management", FALSE);
/* BINDING TYPES */
oid_add_from_string("shadow-agreement","2.5.19.1");
oid_add_from_string("hierarchical-agreement","2.5.19.2");
oid_add_from_string("non-specific-hierarchical-agreement","2.5.19.3");
/* ACCESS CONTROL SCHEMES */
oid_add_from_string("basic-ACS","2.5.28.1");
oid_add_from_string("simplified-ACS","2.5.28.2");
oid_add_from_string("ruleBased-ACS","2.5.28.3");
oid_add_from_string("ruleAndBasic-ACS","2.5.28.4");
oid_add_from_string("ruleAndSimple-ACS","2.5.28.5");
/* ADMINISTRATIVE ROLES */
oid_add_from_string("id-ar-autonomousArea","2.5.23.1");
oid_add_from_string("id-ar-accessControlSpecificArea","2.5.23.2");
oid_add_from_string("id-ar-accessControlInnerArea","2.5.23.3");
oid_add_from_string("id-ar-subschemaAdminSpecificArea","2.5.23.4");
oid_add_from_string("id-ar-collectiveAttributeSpecificArea","2.5.23.5");
oid_add_from_string("id-ar-collectiveAttributeInnerArea","2.5.23.6");
oid_add_from_string("id-ar-contextDefaultSpecificArea","2.5.23.7");
oid_add_from_string("id-ar-serviceSpecificArea","2.5.23.8");
}
|
