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
|
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
}
// get log level (default: info)
logLevel := func() int {
switch os.Getenv("LOG_LEVEL") {
case "debug":
return LogLevelDebug
case "info":
return LogLevelInfo
case "error":
return LogLevelError
}
return LogLevelInfo
}()
// create wireguard device
device := NewDevice(tun, logLevel)
logInfo := device.log.Info
logError := device.log.Error
logDebug := device.log.Debug
logInfo.Println("Device started")
logDebug.Println("Debug log enabled")
// 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")
}
|
