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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
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