/
main.go
55 lines (49 loc) · 1.35 KB
/
main.go
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
package main
import (
"flag"
"fmt"
"os"
"regexp"
"time"
"github.com/calmh/cfdns"
"github.com/thejerf/suture"
)
var (
getIPCommand = "curl -s4 http://icanhazip.com/"
zoneID = ""
name = ""
authEmail = ""
authKey = ""
ttl = 300
interval = 300 * time.Second
ipExp = regexp.MustCompile(`^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}`)
)
func main() {
flag.StringVar(&getIPCommand, "cmd", getIPCommand, "Command to get external IP")
flag.StringVar(&zoneID, "zone", zoneID, "Cloudflare Zone ID")
flag.StringVar(&name, "name", name, "DNS record to update")
flag.StringVar(&authEmail, "email", authEmail, "Cloudflare Auth Email")
flag.StringVar(&authKey, "key", authKey, "Cloudflare API Key")
flag.IntVar(&ttl, "ttl", ttl, "DNS record TTL (seconds)")
flag.DurationVar(&interval, "intv", interval, "External IP check interval")
flag.Parse()
if name == "" {
fmt.Println("Option -name is mandatory")
os.Exit(1)
}
if authEmail == "" {
fmt.Println("Option -email is mandatory")
os.Exit(1)
}
if authKey == "" {
fmt.Println("Option -key is mandatory")
os.Exit(1)
}
client := cfdns.NewClient(authEmail, authKey)
main := suture.NewSimple("main")
checker := newIPChecker(getIPCommand, interval)
main.Add(checker)
updater := newDNSUpdater(name, client, checker.changes)
main.Add(updater)
main.Serve()
}