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
|
package testing
import (
"testing"
"github.com/miekg/coredns/middleware"
"github.com/miekg/dns"
"golang.org/x/net/context"
)
type Section int
const (
Answer Section = iota
Ns
Extra
)
type RRSet []dns.RR
func (p RRSet) Len() int { return len(p) }
func (p RRSet) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p RRSet) Less(i, j int) bool { return p[i].String() < p[j].String() }
type Case struct {
Qname string
Qtype uint16
Rcode int
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
func A(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func AAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func CNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
func SRV(rr string) *dns.SRV { r, _ := dns.NewRR(rr); return r.(*dns.SRV) }
func SOA(rr string) *dns.SOA { r, _ := dns.NewRR(rr); return r.(*dns.SOA) }
func NS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func PTR(rr string) *dns.PTR { r, _ := dns.NewRR(rr); return r.(*dns.PTR) }
func TXT(rr string) *dns.TXT { r, _ := dns.NewRR(rr); return r.(*dns.TXT) }
func MX(rr string) *dns.MX { r, _ := dns.NewRR(rr); return r.(*dns.MX) }
func CheckSection(t *testing.T, tc Case, sect Section, rr []dns.RR) bool {
section := []dns.RR{}
switch sect {
case 0:
section = tc.Answer
case 1:
section = tc.Ns
case 2:
section = tc.Extra
}
for i, a := range rr {
if a.Header().Name != section[i].Header().Name {
t.Errorf("rr %d should have a Header Name of %q, but has %q", i, section[i].Header().Name, a.Header().Name)
return false
}
// 303 signals: don't care what the ttl is.
if section[i].Header().Ttl != 303 && a.Header().Ttl != section[i].Header().Ttl {
t.Errorf("rr %d should have a Header TTL of %d, but has %d", i, section[i].Header().Ttl, a.Header().Ttl)
return false
}
if a.Header().Rrtype != section[i].Header().Rrtype {
t.Errorf("rr %d should have a header rr type of %d, but has %d", i, section[i].Header().Rrtype, a.Header().Rrtype)
return false
}
switch x := a.(type) {
case *dns.SRV:
if x.Priority != section[i].(*dns.SRV).Priority {
t.Errorf("rr %d should have a Priority of %d, but has %d", i, section[i].(*dns.SRV).Priority, x.Priority)
return false
}
if x.Weight != section[i].(*dns.SRV).Weight {
t.Errorf("rr %d should have a Weight of %d, but has %d", i, section[i].(*dns.SRV).Weight, x.Weight)
return false
}
if x.Port != section[i].(*dns.SRV).Port {
t.Errorf("rr %d should have a Port of %d, but has %d", i, section[i].(*dns.SRV).Port, x.Port)
return false
}
if x.Target != section[i].(*dns.SRV).Target {
t.Errorf("rr %d should have a Target of %q, but has %q", i, section[i].(*dns.SRV).Target, x.Target)
return false
}
case *dns.A:
if x.A.String() != section[i].(*dns.A).A.String() {
t.Errorf("rr %d should have a Address of %q, but has %q", i, section[i].(*dns.A).A.String(), x.A.String())
return false
}
case *dns.AAAA:
if x.AAAA.String() != section[i].(*dns.AAAA).AAAA.String() {
t.Errorf("rr %d should have a Address of %q, but has %q", i, section[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
return false
}
case *dns.TXT:
for j, txt := range x.Txt {
if txt != section[i].(*dns.TXT).Txt[j] {
t.Errorf("rr %d should have a Txt of %q, but has %q", i, section[i].(*dns.TXT).Txt[j], txt)
return false
}
}
case *dns.SOA:
tt := section[i].(*dns.SOA)
if x.Ns != tt.Ns {
t.Errorf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
return false
}
case *dns.PTR:
tt := section[i].(*dns.PTR)
if x.Ptr != tt.Ptr {
t.Errorf("PTR ptr should be %q, but is %q", x.Ptr, tt.Ptr)
return false
}
case *dns.CNAME:
tt := section[i].(*dns.CNAME)
if x.Target != tt.Target {
t.Errorf("CNAME target should be %q, but is %q", x.Target, tt.Target)
return false
}
case *dns.MX:
tt := section[i].(*dns.MX)
if x.Mx != tt.Mx {
t.Errorf("MX Mx should be %q, but is %q", x.Mx, tt.Mx)
return false
}
if x.Preference != tt.Preference {
t.Errorf("MX Preference should be %q, but is %q", x.Preference, tt.Preference)
return false
}
case *dns.NS:
tt := section[i].(*dns.NS)
if x.Ns != tt.Ns {
t.Errorf("NS nameserver should be %q, but is %q", x.Ns, tt.Ns)
return false
}
}
}
return true
}
func ErrorHandler() middleware.Handler {
return middleware.HandlerFunc(func(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
m := new(dns.Msg)
m.SetRcode(r, dns.RcodeServerFailure)
w.WriteMsg(m)
return dns.RcodeServerFailure, nil
})
}
|
