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
|
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package wgengine
import (
"bytes"
"fmt"
"reflect"
"testing"
"time"
"github.com/tailscale/wireguard-go/wgcfg"
"go4.org/mem"
"inet.af/netaddr"
"tailscale.com/tailcfg"
"tailscale.com/types/key"
"tailscale.com/wgengine/router"
"tailscale.com/wgengine/tstun"
)
func TestNoteReceiveActivity(t *testing.T) {
now := time.Unix(1, 0)
var logBuf bytes.Buffer
confc := make(chan bool, 1)
gotConf := func() bool {
select {
case <-confc:
return true
default:
return false
}
}
e := &userspaceEngine{
timeNow: func() time.Time { return now },
recvActivityAt: map[tailcfg.DiscoKey]time.Time{},
logf: func(format string, a ...interface{}) {
fmt.Fprintf(&logBuf, format, a...)
},
tundev: new(tstun.TUN),
testMaybeReconfigHook: func() { confc <- true },
trimmedDisco: map[tailcfg.DiscoKey]bool{},
}
ra := e.recvActivityAt
dk := tailcfg.DiscoKey(key.NewPrivate().Public())
// Activity on an untracked key should do nothing.
e.noteReceiveActivity(dk)
if len(ra) != 0 {
t.Fatalf("unexpected growth in map: now has %d keys; want 0", len(ra))
}
if logBuf.Len() != 0 {
t.Fatalf("unexpected log write (and thus activity): %s", logBuf.Bytes())
}
// Now track it, but don't mark it trimmed, so shouldn't update.
ra[dk] = time.Time{}
e.noteReceiveActivity(dk)
if len(ra) != 1 {
t.Fatalf("unexpected growth in map: now has %d keys; want 1", len(ra))
}
if got := ra[dk]; got != now {
t.Fatalf("time in map = %v; want %v", got, now)
}
if gotConf() {
t.Fatalf("unexpected reconfig")
}
// Now mark it trimmed and expect an update.
e.trimmedDisco[dk] = true
e.noteReceiveActivity(dk)
if len(ra) != 1 {
t.Fatalf("unexpected growth in map: now has %d keys; want 1", len(ra))
}
if got := ra[dk]; got != now {
t.Fatalf("time in map = %v; want %v", got, now)
}
if !gotConf() {
t.Fatalf("didn't get expected reconfig")
}
}
func TestUserspaceEngineReconfig(t *testing.T) {
e, err := NewFakeUserspaceEngine(t.Logf, 0, nil)
if err != nil {
t.Fatal(err)
}
defer e.Close()
ue := e.(*userspaceEngine)
routerCfg := &router.Config{}
for _, discoHex := range []string{
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
} {
cfg := &wgcfg.Config{
Peers: []wgcfg.Peer{
{
AllowedIPs: []netaddr.IPPrefix{
{IP: netaddr.IPv4(100, 100, 99, 1), Bits: 32},
},
Endpoints: discoHex + ".disco.tailscale:12345",
},
},
}
err = e.Reconfig(cfg, routerCfg)
if err != nil {
t.Fatal(err)
}
wantRecvAt := map[tailcfg.DiscoKey]time.Time{
dkFromHex(discoHex): time.Time{},
}
if got := ue.recvActivityAt; !reflect.DeepEqual(got, wantRecvAt) {
t.Errorf("wrong recvActivityAt\n got: %v\nwant: %v\n", got, wantRecvAt)
}
wantTrimmedDisco := map[tailcfg.DiscoKey]bool{
dkFromHex(discoHex): true,
}
if got := ue.trimmedDisco; !reflect.DeepEqual(got, wantTrimmedDisco) {
t.Errorf("wrong wantTrimmedDisco\n got: %v\nwant: %v\n", got, wantTrimmedDisco)
}
}
}
func dkFromHex(hex string) tailcfg.DiscoKey {
if len(hex) != 64 {
panic(fmt.Sprintf("%q is len %d; want 64", hex, len(hex)))
}
k, err := key.NewPublicFromHexMem(mem.S(hex[:64]))
if err != nil {
panic(fmt.Sprintf("%q is not hex: %v", hex, err))
}
return tailcfg.DiscoKey(k)
}
|
