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
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511 | // Copyright (C) 2013-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <dhcp/pkt6.h>
#include <dhcp/testutils/pkt_captures.h>
#include <util/encode/encode.h>
#include <string><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
/// @file pkt_captures6.cc
///
/// @brief contains packet captures imported from Wireshark
///
/// These are actual packets captured over wire. They are used in various
/// tests.
///
/// The procedure to export Wireshark -> unit-tests is manual, but rather
/// easy to follow:
/// 1. Open a file in wireshark
/// 2. Find the packet you want to export
/// 3. There's a protocol stack (Frame, Ethernet, IPv6, UDP, DHCPv6, ...)
/// 4. Right click on DHCPv6 -> Copy -> Bytes -> Hex Stream
/// 5. Paste it as: string hex_string="[paste here]";
/// 6. Coding guidelines line restrictions apply, so wrap your code as necessary
/// 7. Make sure you describe the capture appropriately
/// 8. Follow whatever rest of the methods are doing (set ports, ifaces etc.)
/// 9. To easily copy packet description, click File... -> Extract packet
/// dissections -> as plain text file...
/// (Make sure that the packet is expanded in the view. The text file will
/// contain whatever expansion level you have in the graphical tree.)
using namespace isc::dhcp;
using namespace isc::asiolink;
using namespace std;
namespace isc {
namespace dhcp {
namespace test {
void PktCaptures::captureSetDefaultFields(const Pkt6Ptr& pkt) {
pkt->setRemotePort(546);
pkt->setRemoteAddr(IOAddress("fe80::1"));
pkt->setLocalPort(0);
pkt->setLocalAddr(IOAddress("ff02::1:2"));
pkt->setIndex(2);
pkt->setIface("eth0");
}
// This function returns buffer for very simple Solicit
Pkt6Ptr PktCaptures::captureSimpleSolicit() {
uint8_t data[] = {
1, // type 1 = SOLICIT
0xca, 0xfe, 0x01, // trans-id = 0xcafe01
0, 1, // option type 1 (client-id)
0, 10, // option length 10
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, // DUID
0, 3, // option type 3 (IA_NA)
0, 12, // option length 12
0, 0, 0, 1, // iaid = 1
0, 0, 0, 0, // T1 = 0
0, 0, 0, 0 // T2 = 0
};
Pkt6Ptr pkt(new Pkt6(data, sizeof(data)));
captureSetDefaultFields(pkt);
return (pkt);
}
Pkt6Ptr PktCaptures::captureRelayedSolicit() {
// This is a very simple relayed SOLICIT message:
// RELAY-FORW
// - interface-id
// - relay-message
// - SOLICIT
// - client-id
// - IA_NA (iaid=1, t1=0, t2=0)
// - ORO (7)
// string exported from Wireshark
string hex_string =
"0c0500000000000000000000000000000000fc00000000000000000000000000000900"
"12000231350009002c010517100001000e0001000151b5e46208002758f1e80003000c"
"000000010000000000000000000600020007";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
captureSetDefaultFields(pkt);
return (pkt);
}
/// returns a buffer with relayed SOLICIT (from DOCSIS3.0 cable modem)
Pkt6Ptr PktCaptures::captureDocsisRelayedSolicit() {
// This is an actual DOCSIS packet
// RELAY-FORW (12)
// - Relay Message
// - SOLICIT (1)
// - client-id
// - IA_NA (iaid=7f000788, t2=0, t2=0)
// - IAAddress (::, pref=0,valid=0)
// - rapid-commit
// - elapsed
// - ORO
// - Reconfigure-accept
// - Vendor-Class ("docsis3.0")
// - Vendor-specific Info
// - subopt 1: Option request = 32,33,34,37,38
// - subopt 36: Device identifier
// - subopt 35: TLV5
// - subopt 2: Device type = ECM
// - subopt 3: Embedded components
// - subopt 4: Serial Number
// - subopt 5: Hardware version
// - subopt 6: Software version
// - subopt 7: Boot ROM Version
// - subopt 8: Organization Unique Identifier
// - subopt 9: Model Number
// - subopt 10: Vendor Name (Netgear)
// - subopt 15: unknown
// - Interface-Id
// - Vendor-specific Information
// - Suboption 1025: CMTS capabilities
// - Suboption 1026: Cable Modem MAC addr = 10:0d:7f:00:07:88
// string exported from Wireshark
string hex_string =
"0c002a0288fe00fe00015a8d09fffe7af955fe80000000000000120d7ffffe00078800"
"090189010d397f0001000a00030001100d7f000788000300287f000788000000000000"
"000000050018000000000000000000000000000000000000000000000000000e000000"
"0800020000000600020011001400000010000f0000118b0009646f63736973332e3000"
"1101200000118b0001000a0020002100220025002600240006100d7f00078800230081"
"0101010201030301010401010501010601010701180801080901000a01010b01180c01"
"010d0200400e0200100f01011004000000021101011301011401001501381601011701"
"011801041901041a01041b01281c01021d01081e01201f011020011821010222010123"
"010124011825010126020040270101120701100d7f00078a0002000345434d0003000b"
"45434d3a45524f555445520004000d3335463132395550303030353200050004332e31"
"310006000956312e30312e31315400070013505350552d426f6f7420312e302e31362e"
"323200080006303030393542000900084347343030305444000a00074e657467656172"
"000f000745524f5554455200120012427531264361312f3000100d7f00078800000011"
"00160000118b040100040102030004020006100d7f000788";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
captureSetDefaultFields(pkt);
return (pkt);
}
/// returns a buffer with relayed SOLICIT (from DOCSIS3.0 eRouter)
Pkt6Ptr PktCaptures::captureeRouterRelayedSolicit() {
/* Packet description exported from wireshark:
DHCPv6
Message type: Relay-forw (12)
Hopcount: 0
Link address: 2001:558:ffa8::1 (2001:558:ffa8::1)
Peer address: fe80::22e5:2aff:feb8:1515 (fe80::22e5:2aff:feb8:1515)
Relay Message
Option: Relay Message (9)
Length: 241
Value: 01a90044000e000000140000000600080011001700180019...
DHCPv6
Message type: Solicit (1)
Transaction ID: 0xa90044
Rapid Commit
Option: Rapid Commit (14)
Length: 0
Reconfigure Accept
Option: Reconfigure Accept (20)
Length: 0
Option Request
Option: Option Request (6)
Length: 8
Value: 0011001700180019
Requested Option code: Vendor-specific Information (17)
Requested Option code: DNS recursive name server (23)
Requested Option code: Domain Search List (24)
Requested Option code: Identity Association for Prefix Delegation (25)
Vendor Class
Option: Vendor Class (16)
Length: 16
Value: 0000118b000a65526f75746572312e30
Enterprise ID: Cable Television Laboratories, Inc. (4491)
vendor-class-data: eRouter1.0
Vendor-specific Information
Option: Vendor-specific Information (17)
Length: 112
Value: 0000118b0002000745524f555445520003000b45434d3a45...
Enterprise ID: Cable Television Laboratories, Inc. (4491)
Suboption: Device Type = (2)"EROUTER"
Suboption: Embedded Components = (3)"ECM:EROUTER"
Suboption: Serial Number = (4)"2BR229U40044C"
Suboption: Hardware Version = (5)"1.04"
Suboption: Software Version = (6)"V1.33.03"
Suboption: Boot ROM Version = (7)"2.3.0R2"
Suboption: Organization Unique Identifier = (8)"00095B"
Suboption: Model Number = (9)"CG3000DCR"
Suboption: Vendor Name = (10)"Netgear"
Client Identifier
Option: Client Identifier (1)
Length: 10
Value: 0003000120e52ab81515
DUID: 0003000120e52ab81515
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: 20:e5:2a:b8:15:15
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
Value: 2ab815150000000000000000001a00190000000000000000...
IAID: 2ab81515
T1: 0
T2: 0
IA Prefix
Option: IA Prefix (26)
Length: 25
Value: 000000000000000038000000000000000000000000000000...
Preferred lifetime: 0
Valid lifetime: 0
Prefix length: 56
Prefix address: :: (::)
Identity Association for Non-temporary Address
Option: Identity Association for Non-temporary Address (3)
Length: 12
Value: 2ab815150000000000000000
IAID: 2ab81515
T1: 0
T2: 0
Elapsed time
Option: Elapsed time (8)
Length: 2
Value: 0000
Elapsed time: 0 ms
Vendor-specific Information
Option: Vendor-specific Information (17)
Length: 22
Value: 0000118b0402000620e52ab815140401000401020300
Enterprise ID: Cable Television Laboratories, Inc. (4491)
Suboption: CM MAC Address Option = (1026)20:e5:2a:b8:15:14
Suboption: CMTS Capabilities Option : (1025)
Interface-Id
Option: Interface-Id (18)
Length: 4
Value: 00000022
Interface-ID:
Remote Identifier
Option: Remote Identifier (37)
Length: 14
Value: 0000101300015c228d4110000122
Enterprise ID: Arris Interactive LLC (4115)
Remote-ID: 00015c228d4110000122
DHCP option 53
Option: Unknown (53)
Length: 10
Value: 0003000100015c228d3d
DUID: 0003000100015c228d3d
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: 00:01:5c:22:8d:3d */
// string exported from Wireshark
string hex_string =
"0c0020010558ffa800000000000000000001fe8000000000000022e52afffeb8151500"
"0900f101a90044000e000000140000000600080011001700180019001000100000118b"
"000a65526f75746572312e30001100700000118b0002000745524f555445520003000b"
"45434d3a45524f555445520004000d3242523232395534303034344300050004312e30"
"340006000856312e33332e303300070007322e332e3052320008000630303039354200"
"090009434733303030444352000a00074e6574676561720001000a0003000120e52ab8"
"1515001900292ab815150000000000000000001a001900000000000000003800000000"
"0000000000000000000000000003000c2ab81515000000000000000000080002000000"
"1100160000118b0402000620e52ab81514040100040102030000120004000000220025"
"000e0000101300015c228d41100001220035000a0003000100015c228d3d";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
captureSetDefaultFields(pkt);
return (pkt);
}
Pkt6Ptr PktCaptures::captureCableLabsShortVendorClass() {
// This is a simple non-relayed Solicit:
// - client-identifier
// - IA_NA
// - Vendor Class (4 bytes)
// - enterprise-id 4491
// - Vendor-specific Information
// - enterprise-id 4491
std::string hex_string =
"01671cb90001000e0001000152ea903a08002758f1e80003000c00004bd10000000000"
"000000001000040000118b0011000a0000118b000100020020";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
captureSetDefaultFields(pkt);
return (pkt);
}
/// @brief creates doubly relayed solicit message
///
/// This is a traffic capture exported from wireshark and manually modified
/// to include necessary options (RSOO). It includes a SOLICIT message
/// that passed through two relays. It is especially interesting,
/// because of the following properties:
/// - double encapsulation
/// - first relay inserts relay-msg before extra options
/// - second relay inserts relay-msg after extra options
/// - both relays are from different vendors
/// - interface-id are different for each relay
/// - first relay inserts valid remote-id
/// - second relay inserts remote-id with empty vendor data
/// - the solicit message requests for custom options in ORO
/// - there are option types in RELAY-FORW that do not appear in SOLICIT
/// - there are option types in SOLICT that do not appear in RELAY-FORW
///
/// RELAY-FORW
/// - relay message option
/// - RELAY-FORW
/// - rsoo (66)
/// - option 255 (len 4)
/// - option 256 (len 9)
/// - remote-id option (37)
/// - relay message option
/// - SOLICIT
/// - client-id option
/// - ia_na option
/// - elapsed time
/// - ORO
/// - interface-id option (18)
/// - remote-id option (37)
///
/// The original capture was posted to dibbler users mailing list.
///
/// @return created double relayed SOLICIT message
isc::dhcp::Pkt6Ptr PktCaptures::captureRelayed2xRSOO() {
// string exported from Wireshark
string hex_string =
"0c01200108880db800010000000000000000fe80000000000000020021fffe5c18a9"
"0009007d0c0000000000000000000000000000000000fe80000000000000020021fffe5c18a9"
"00420015" // RSOO (includes ...
"00ff000401020304" // ... option 255, len 4, content 0x01020304
"01000009010203040506070809" // ... option 256, len 9, content 0x010203040506070809
"0025000400000de9" // remote-id
"00090036" // relay-msg, len 54
"016b4fe2" // solicit"
"0001000e0001000118b033410000215c18a9" // client-id
"0003000c00000001ffffffffffffffff" // ia-na
"000800020000"
"00060006001700f200f3"
"0012001c4953414d3134347c3239397c697076367c6e743a76703a313a" // vendor-class
"313130002500120000197f0001000118b033410000215c18a9";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
pkt->setRemotePort(547);
pkt->setRemoteAddr(IOAddress("fe80::1234"));
pkt->setLocalPort(547);
pkt->setLocalAddr(IOAddress("ff05::1:3"));
pkt->setIndex(2);
pkt->setIface("eth0");
return (pkt);
}
isc::dhcp::Pkt6Ptr PktCaptures::captureSolicitWithVIVSO() {
// Message type: Solicit (1)
// Transaction ID: 0xba048e
// Client Identifier
// Option: Client Identifier (1)
// Length: 10
// Value: 0003000108002725d3f4
// DUID: 0003000108002725d3f4
// DUID Type: link-layer address (3)
// Hardware type: Ethernet (1)
// Link-layer address: 08:00:27:25:d3:f4
// Identity Association for Non-temporary Address
// Option: Identity Association for Non-temporary Address (3)
// Length: 40
// Value: 00aabbcc0000000000000000000500180000000000000000...
// IAID: 00aabbcc
// T1: 0
// T2: 0
// IA Address
// Option: IA Address (5)
// Length: 24
// Value: 000000000000000000000000000000000000000000000000
// IPv6 address: ::
// Preferred lifetime: 0
// Valid lifetime:
// Option Request
// Option: Option Request (6)
// Length: 6
// Value: 00d100d2000c
// Vendor-specific Information
// Option: Vendor-specific Information (17)
// Length: 4
// Value: 00001e61
// Enterprise ID: E-DYNAMICS.ORG (7777)
string hex_string =
"01ba048e0001000a0003000108002725d3f40003002800aabbcc"
"00000000000000000005001800000000000000000000000000000"
"00000000000000000000006000600d100d2000c0011000400001e61";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
pkt->setRemotePort(547);
pkt->setRemoteAddr(IOAddress("fe80::1234"));
pkt->setLocalPort(547);
pkt->setLocalAddr(IOAddress("ff05::1:3"));
pkt->setIndex(2);
pkt->setIface("eth0");
return (pkt);
}
isc::dhcp::Pkt6Ptr PktCaptures::captureSolicitWithTruncatedVIVSO() {
// Message type: Solicit (1)
// Transaction ID: 0xba048e
// Client Identifier
// Option: Client Identifier (1)
// Length: 10
// Value: 0003000108002725d3f4
// DUID: 0003000108002725d3f4
// DUID Type: link-layer address (3)
// Hardware type: Ethernet (1)
// Link-layer address: 08:00:27:25:d3:f4
// Identity Association for Non-temporary Address
// Option: Identity Association for Non-temporary Address (3)
// Length: 40
// Value: 00aabbcc0000000000000000000500180000000000000000...
// IAID: 00aabbcc
// T1: 0
// T2: 0
// IA Address
// Option: IA Address (5)
// Length: 24
// Value: 000000000000000000000000000000000000000000000000
// IPv6 address: ::
// Preferred lifetime: 0
// Valid lifetime:
// Option Request
// Option: Option Request (6)
// Length: 6
// Value: 00d100d2000c
// Vendor-specific Information
// Option: Vendor-specific Information (17)
// Length: 1 <-------- length too short!
// Value: 00001e61
// Enterprise ID: E-DYNAMICS.ORG (7777)
string hex_string =
"01ba048e0001000a0003000108002725d3f40003002800aabbcc"
"00000000000000000005001800000000000000000000000000000"
"00000000000000000000006000600d100d2000c0011000100001e61";
std::vector<uint8_t> bin;
// Decode the hex string and store it in bin (which happens
// to be OptionBuffer format)
isc::util::encode::decodeHex(hex_string, bin);
Pkt6Ptr pkt(new Pkt6(&bin[0], bin.size()));
pkt->setRemotePort(547);
pkt->setRemoteAddr(IOAddress("fe80::1234"));
pkt->setLocalPort(547);
pkt->setLocalAddr(IOAddress("ff05::1:3"));
pkt->setIndex(2);
pkt->setIface("eth0");
return (pkt);
}
}; // end of isc::dhcp::test namespace
}; // end of isc::dhcp namespace
}; // end of isc namespace
|