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
|
package dhcpv6
import (
"errors"
"fmt"
"net"
"testing"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"github.com/stretchr/testify/suite"
)
var ErrDummy = errors.New("dummy error")
type MatchingAddressTestSuite struct {
suite.Suite
m mock.Mock
ips []net.IP
addrs []net.Addr
}
func (s *MatchingAddressTestSuite) InterfaceAddresses(name string) ([]net.Addr, error) {
args := s.m.Called(name)
if args.Get(0) == nil {
return nil, args.Error(1)
}
if ifaddrs, ok := args.Get(0).([]net.Addr); ok {
return ifaddrs, args.Error(1)
}
panic(fmt.Sprintf("assert: arguments: InterfaceAddresses(0) failed because object wasn't correct type: %v", args.Get(0)))
}
func (s *MatchingAddressTestSuite) Match(ip net.IP) bool {
args := s.m.Called(ip)
return args.Bool(0)
}
func (s *MatchingAddressTestSuite) SetupTest() {
InterfaceAddresses = s.InterfaceAddresses
s.ips = []net.IP{
net.ParseIP("2401:db00:3020:70e1:face:0:7e:0"),
net.ParseIP("2803:6080:890c:847e::1"),
net.ParseIP("fe80::4a57:ddff:fe04:d8e9"),
}
s.addrs = []net.Addr{}
for _, ip := range s.ips {
s.addrs = append(s.addrs, &net.IPNet{IP: ip})
}
}
func (s *MatchingAddressTestSuite) TestGetMatchingAddr() {
// Check if error from InterfaceAddresses immediately returns error
s.m.On("InterfaceAddresses", "eth0").Return(nil, ErrDummy).Once()
_, err := getMatchingAddr("eth0", s.Match)
s.Assert().Equal(ErrDummy, err)
s.m.AssertExpectations(s.T())
// Check if the looping is stopped after finding a matching address
s.m.On("InterfaceAddresses", "eth0").Return(s.addrs, nil).Once()
s.m.On("Match", s.ips[0]).Return(false).Once()
s.m.On("Match", s.ips[1]).Return(true).Once()
ip, err := getMatchingAddr("eth0", s.Match)
s.Require().NoError(err)
s.Assert().Equal(s.ips[1], ip)
s.m.AssertExpectations(s.T())
// Check if the looping skips not matching addresses
s.m.On("InterfaceAddresses", "eth0").Return(s.addrs, nil).Once()
s.m.On("Match", s.ips[0]).Return(false).Once()
s.m.On("Match", s.ips[1]).Return(false).Once()
s.m.On("Match", s.ips[2]).Return(true).Once()
ip, err = getMatchingAddr("eth0", s.Match)
s.Require().NoError(err)
s.Assert().Equal(s.ips[2], ip)
s.m.AssertExpectations(s.T())
// Check if the error is returned if no matching address is found
s.m.On("InterfaceAddresses", "eth0").Return(s.addrs, nil).Once()
s.m.On("Match", s.ips[0]).Return(false).Once()
s.m.On("Match", s.ips[1]).Return(false).Once()
s.m.On("Match", s.ips[2]).Return(false).Once()
_, err = getMatchingAddr("eth0", s.Match)
s.Assert().EqualError(err, "no matching address found for interface eth0")
s.m.AssertExpectations(s.T())
}
func (s *MatchingAddressTestSuite) TestGetLinkLocalAddr() {
s.m.On("InterfaceAddresses", "eth0").Return(s.addrs, nil).Once()
ip, err := GetLinkLocalAddr("eth0")
s.Require().NoError(err)
s.Assert().Equal(s.ips[2], ip)
s.m.AssertExpectations(s.T())
}
func (s *MatchingAddressTestSuite) TestGetGlobalAddr() {
s.m.On("InterfaceAddresses", "eth0").Return(s.addrs, nil).Once()
ip, err := GetGlobalAddr("eth0")
s.Require().NoError(err)
s.Assert().Equal(s.ips[0], ip)
s.m.AssertExpectations(s.T())
}
func TestMatchingAddressTestSuite(t *testing.T) {
suite.Run(t, new(MatchingAddressTestSuite))
}
func Test_ExtractMAC(t *testing.T) {
//SOLICIT message wrapped in Relay-Forw
var relayForwBytesDuidUUID = []byte{
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x26, 0x8a, 0x07, 0xff, 0xfe, 0x56,
0xdc, 0xa4, 0x00, 0x12, 0x00, 0x06, 0x24, 0x8a,
0x07, 0x56, 0xdc, 0xa4, 0x00, 0x09, 0x00, 0x5a,
0x06, 0x7d, 0x9b, 0xca, 0x00, 0x01, 0x00, 0x12,
0x00, 0x04, 0xb7, 0xfd, 0x0a, 0x8c, 0x1b, 0x14,
0x10, 0xaa, 0xeb, 0x0a, 0x5b, 0x3f, 0xe8, 0x9d,
0x0f, 0x56, 0x00, 0x06, 0x00, 0x0a, 0x00, 0x17,
0x00, 0x18, 0x00, 0x17, 0x00, 0x18, 0x00, 0x01,
0x00, 0x08, 0x00, 0x02, 0xff, 0xff, 0x00, 0x03,
0x00, 0x28, 0x07, 0x56, 0xdc, 0xa4, 0x00, 0x00,
0x0e, 0x10, 0x00, 0x00, 0x15, 0x18, 0x00, 0x05,
0x00, 0x18, 0x26, 0x20, 0x01, 0x0d, 0xc0, 0x82,
0x90, 0x63, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xaf, 0xa0, 0x00, 0x00, 0x1c, 0x20, 0x00, 0x00,
0x1d, 0x4c}
packet, err := FromBytes(relayForwBytesDuidUUID)
require.NoError(t, err)
mac, err := ExtractMAC(packet)
require.NoError(t, err)
require.Equal(t, mac.String(), "24:8a:07:56:dc:a4")
// MAC extracted from DUID-LL
duid := &DUIDLL{
HWType: iana.HWTypeEthernet,
LinkLayerAddr: []byte{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa},
}
solicit, err := NewMessage(WithClientID(duid))
require.NoError(t, err)
relay, err := EncapsulateRelay(solicit, MessageTypeRelayForward, net.IPv6zero, net.IPv6zero)
require.NoError(t, err)
mac, err = ExtractMAC(relay)
require.NoError(t, err)
require.Equal(t, mac.String(), "aa:aa:aa:aa:aa:aa")
// MAC extracted from DUID-LLT
solicit, err = NewMessage(WithClientID(&DUIDLLT{
HWType: iana.HWTypeEthernet,
LinkLayerAddr: []byte{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa},
}))
require.NoError(t, err)
relay, err = EncapsulateRelay(solicit, MessageTypeRelayForward, net.IPv6zero, net.IPv6zero)
require.NoError(t, err)
mac, err = ExtractMAC(relay)
require.NoError(t, err)
require.Equal(t, mac.String(), "aa:aa:aa:aa:aa:aa")
// no client ID
solicit, err = NewMessage()
require.NoError(t, err)
_, err = ExtractMAC(solicit)
require.Error(t, err)
// DUID is not DuidLL or DuidLLT
duiden := &DUIDEN{}
solicit, err = NewMessage(WithClientID(duiden))
require.NoError(t, err)
_, err = ExtractMAC(solicit)
require.Error(t, err)
}
|
