netmaker/netclient/wireguard/unix.go
2022-04-25 16:30:18 -04:00

90 lines
2.4 KiB
Go

package wireguard
import (
"fmt"
"log"
"os"
"regexp"
"github.com/gravitl/netmaker/logger"
"github.com/gravitl/netmaker/models"
"github.com/gravitl/netmaker/netclient/ncutils"
)
// ApplyWGQuickConf - applies wg-quick commands if os supports
func ApplyWGQuickConf(confPath string, ifacename string) error {
if ncutils.IsWindows() {
return ApplyWindowsConf(confPath)
} else {
_, err := os.Stat(confPath)
if err != nil {
logger.Log(0, confPath+" does not exist "+err.Error())
return err
}
if ncutils.IfaceExists(ifacename) {
ncutils.RunCmd("wg-quick down "+confPath, true)
}
_, err = ncutils.RunCmd("wg-quick up "+confPath, true)
return err
}
}
// ApplyMacOSConf - applies system commands similar to wg-quick using golang for MacOS
func ApplyMacOSConf(node *models.Node, ifacename string, confPath string) error {
var err error
_ = WgQuickDownMac(node, ifacename)
err = WgQuickUpMac(node, ifacename, confPath)
return err
}
// SyncWGQuickConf - formats config file and runs sync command
func SyncWGQuickConf(iface string, confPath string) error {
var tmpConf = confPath + ".sync.tmp"
var confCmd = "wg-quick strip "
if ncutils.IsMac() {
confCmd = "grep -v -e Address -e MTU -e PostUp -e PostDown "
}
confRaw, err := ncutils.RunCmd(confCmd+confPath, false)
if err != nil {
return err
}
regex := regexp.MustCompile(".*Warning.*\n")
conf := regex.ReplaceAllString(confRaw, "")
err = os.WriteFile(tmpConf, []byte(conf), 0600)
if err != nil {
return err
}
_, err = ncutils.RunCmd("wg syncconf "+iface+" "+tmpConf, true)
if err != nil {
log.Println(err.Error())
logger.Log(0, "error syncing conf, resetting")
err = ApplyWGQuickConf(confPath, iface)
}
errN := os.Remove(tmpConf)
if errN != nil {
logger.Log(0, errN.Error())
}
return err
}
// RemoveWGQuickConf - calls wg-quick down
func RemoveWGQuickConf(confPath string, printlog bool) error {
_, err := ncutils.RunCmd(fmt.Sprintf("wg-quick down %s", confPath), printlog)
return err
}
// StorePrivKey - stores wg priv key on disk locally
func StorePrivKey(key string, network string) error {
var err error
d1 := []byte(key)
err = os.WriteFile(ncutils.GetNetclientPathSpecific()+"wgkey-"+network, d1, 0600)
return err
}
// RetrievePrivKey - reads wg priv key from local disk
func RetrievePrivKey(network string) (string, error) {
dat, err := ncutils.GetFileWithRetry(ncutils.GetNetclientPathSpecific()+"wgkey-"+network, 2)
return string(dat), err
}