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
|
package dhcpv6
import (
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestOpt4RDNonMapRuleParse(t *testing.T) {
data := []byte{0x81, 0xaa, 0x05, 0xd4}
var opt Opt4RDNonMapRule
err := opt.FromBytes(data)
require.NoError(t, err)
require.True(t, opt.HubAndSpoke)
require.NotNil(t, opt.TrafficClass)
require.EqualValues(t, 0xaa, *opt.TrafficClass)
require.EqualValues(t, 1492, opt.DomainPMTU)
// Remove the TrafficClass flag and check value is ignored
data[0] = 0x80
opt = Opt4RDNonMapRule{}
err = opt.FromBytes(data)
require.NoError(t, err)
require.True(t, opt.HubAndSpoke)
require.Nil(t, opt.TrafficClass)
require.EqualValues(t, 1492, opt.DomainPMTU)
}
func TestOpt4RDNonMapRuleToBytes(t *testing.T) {
var tClass uint8 = 0xaa
opt := Opt4RDNonMapRule{
HubAndSpoke: true,
TrafficClass: &tClass,
DomainPMTU: 1492,
}
expected := []byte{0x81, 0xaa, 0x05, 0xd4}
require.Equal(t, expected, opt.ToBytes())
// Unsetting TrafficClass should zero the corresponding bytes in the output
opt.TrafficClass = nil
expected[0], expected[1] = 0x80, 0x00
require.Equal(t, expected, opt.ToBytes())
}
func TestOpt4RDNonMapRuleString(t *testing.T) {
var tClass uint8 = 120
opt := Opt4RDNonMapRule{
HubAndSpoke: true,
TrafficClass: &tClass,
DomainPMTU: 9000,
}
str := opt.String()
require.Contains(t, str, "HubAndSpoke=true",
"String() should contain the HubAndSpoke flag value")
require.Contains(t, str, "TrafficClass=120",
"String() should contain the TrafficClass flag value")
require.Contains(t, str, "DomainPMTU=9000",
"String() should contain the domain PMTU")
}
func TestOpt4RDMapRuleParse(t *testing.T) {
ip6addr, ip6net, err := net.ParseCIDR("2001:db8::1234:5678:0:aabb/64")
ip6net.IP = ip6addr // We want to keep the entire address however, not apply the mask
require.NoError(t, err)
ip4addr, ip4net, err := net.ParseCIDR("100.64.0.234/10")
ip4net.IP = ip4addr.To4()
require.NoError(t, err)
data := append([]byte{
10, // IPv4 prefix length
64, // IPv6 prefix length
32, // EA-bits
0x80, // WKPs authorized
},
append(ip4addr.To4(), ip6addr...)...,
)
var opt Opt4RDMapRule
err = opt.FromBytes(data)
require.NoError(t, err)
require.EqualValues(t, *ip6net, opt.Prefix6)
require.EqualValues(t, *ip4net, opt.Prefix4)
require.EqualValues(t, 32, opt.EABitsLength)
require.True(t, opt.WKPAuthorized)
}
func TestOpt4RDMapRuleToBytes(t *testing.T) {
opt := Opt4RDMapRule{
Prefix4: net.IPNet{
IP: net.IPv4(100, 64, 0, 238),
Mask: net.CIDRMask(24, 32),
},
Prefix6: net.IPNet{
IP: net.ParseIP("2001:db8::1234:5678:0:aabb"),
Mask: net.CIDRMask(80, 128),
},
EABitsLength: 32,
WKPAuthorized: true,
}
expected := append([]byte{
24, // v4 prefix length
80, // v6 prefix length
32, // EA-bits
0x80, // WKPs authorized
},
append(opt.Prefix4.IP.To4(), opt.Prefix6.IP.To16()...)...,
)
require.Equal(t, expected, opt.ToBytes())
}
// FIXME: Invalid packets are serialized without error
func TestOpt4RDMapRuleString(t *testing.T) {
opt := Opt4RDMapRule{
Prefix4: net.IPNet{
IP: net.IPv4(100, 64, 0, 238),
Mask: net.CIDRMask(24, 32),
},
Prefix6: net.IPNet{
IP: net.ParseIP("2001:db8::1234:5678:0:aabb"),
Mask: net.CIDRMask(80, 128),
},
EABitsLength: 32,
WKPAuthorized: true,
}
str := opt.String()
require.Contains(t, str, "WKPAuthorized=true", "String() should write the flag values")
require.Contains(t, str, "Prefix6=2001:db8::1234:5678:0:aabb/80",
"String() should include the IPv6 prefix")
require.Contains(t, str, "Prefix4=100.64.0.238/24",
"String() should include the IPv4 prefix")
require.Contains(t, str, "EA-Bits=32", "String() should include the value for EA-Bits")
}
// This test round-trip serialization/deserialization of both kinds of 4RD
// options, and the container option
func TestOpt4RDRoundTrip(t *testing.T) {
var tClass uint8 = 0xaa
opt := Opt4RD{
Options: Options{
&Opt4RDMapRule{
Prefix4: net.IPNet{
IP: net.IPv4(100, 64, 0, 238).To4(),
Mask: net.CIDRMask(24, 32),
},
Prefix6: net.IPNet{
IP: net.ParseIP("2001:db8::1234:5678:0:aabb"),
Mask: net.CIDRMask(80, 128),
},
EABitsLength: 32,
WKPAuthorized: true,
},
&Opt4RDNonMapRule{
HubAndSpoke: true,
TrafficClass: &tClass,
DomainPMTU: 9000,
},
},
}
var rtOpt Opt4RD
err := rtOpt.FromBytes(opt.ToBytes())
require.NoError(t, err)
require.NotNil(t, rtOpt)
require.Equal(t, opt, rtOpt)
}
|
