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
|
package main
import (
"fmt"
"log"
"os"
"os/signal"
"runtime"
)
func printUsage() {
fmt.Printf("usage:\n")
fmt.Printf("%s [-f/--foreground] INTERFACE-NAME\n", os.Args[0])
}
func main() {
// parse arguments
var foreground bool
var interfaceName string
if len(os.Args) < 2 || len(os.Args) > 3 {
printUsage()
return
}
switch os.Args[1] {
case "-f", "--foreground":
foreground = true
if len(os.Args) != 3 {
printUsage()
return
}
interfaceName = os.Args[2]
default:
foreground = false
if len(os.Args) != 2 {
printUsage()
return
}
interfaceName = os.Args[1]
}
// daemonize the process
if !foreground {
err := Daemonize()
if err != nil {
log.Println("Failed to daemonize:", err)
}
return
}
// increase number of go workers (for Go <1.5)
runtime.GOMAXPROCS(runtime.NumCPU())
// open TUN device
tun, err := CreateTUN(interfaceName)
if err != nil {
log.Println("Failed to create tun device:", err)
return
}
// create wireguard device
device := NewDevice(tun, LogLevelDebug)
logInfo := device.log.Info
logError := device.log.Error
logInfo.Println("Starting device")
// start configuration lister
uapi, err := NewUAPIListener(interfaceName)
if err != nil {
logError.Fatal("UAPI listen error:", err)
}
errs := make(chan error)
term := make(chan os.Signal)
wait := device.WaitChannel()
go func() {
for {
conn, err := uapi.Accept()
if err != nil {
errs <- err
return
}
go ipcHandle(device, conn)
}
}()
logInfo.Println("UAPI listener started")
// wait for program to terminate
signal.Notify(term, os.Kill)
signal.Notify(term, os.Interrupt)
select {
case <-wait:
case <-term:
case <-errs:
}
// clean up UAPI bind
uapi.Close()
logInfo.Println("Closing")
}
|
