netmaker/functions/local.go

package functions

import (
        "fmt"
	"path/filepath"
        "log"
        "os"
	"io/ioutil"
)


func FileExists(f string) bool {
    info, err := os.Stat(f)
    if os.IsNotExist(err) {
        return false
    }
    return !info.IsDir()
}

func SetCorefile(domains string) error {
	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
	if err != nil {
            return err
	}
	_, err = os.Stat(dir + "/config/dnsconfig")
        if os.IsNotExist(err) {
                os.Mkdir(dir +"/config/dnsconfig", 744)
        } else if err != nil {
                fmt.Println("couldnt find or create /config/dnsconfig")
                return err
        }

		corefile := domains + ` {
    hosts /root/dnsconfig/netmaker.hosts {
	reload 15s
	fallthrough	
    }
    forward . 8.8.8.8 8.8.4.4
    log
}
`
		corebytes := []byte(corefile)

		err = ioutil.WriteFile(dir + "/config/dnsconfig/Corefile", corebytes, 0644)
		if err != nil {
			log.Println(err)
			log.Println("")
			return err
		}
	return err
}