1Panel/backend/utils/ntp/ntp.go

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package ntp
import (
"encoding/binary"
"fmt"
"net"
"runtime"
"time"
"github.com/gogf/gf/os/gproc"
)
const ntpEpochOffset = 2208988800
type packet struct {
Settings uint8
Stratum uint8
Poll int8
Precision int8
RootDelay uint32
RootDispersion uint32
ReferenceID uint32
RefTimeSec uint32
RefTimeFrac uint32
OrigTimeSec uint32
OrigTimeFrac uint32
RxTimeSec uint32
RxTimeFrac uint32
TxTimeSec uint32
TxTimeFrac uint32
}
func Getremotetime() (time.Time, error) {
conn, err := net.Dial("udp", "pool.ntp.org:123")
if err != nil {
return time.Time{}, fmt.Errorf("failed to connect: %v", err)
}
defer conn.Close()
if err := conn.SetDeadline(time.Now().Add(15 * time.Second)); err != nil {
return time.Time{}, fmt.Errorf("failed to set deadline: %v", err)
}
req := &packet{Settings: 0x1B}
if err := binary.Write(conn, binary.BigEndian, req); err != nil {
return time.Time{}, fmt.Errorf("failed to set request: %v", err)
}
rsp := &packet{}
if err := binary.Read(conn, binary.BigEndian, rsp); err != nil {
return time.Time{}, fmt.Errorf("failed to read server response: %v", err)
}
secs := float64(rsp.TxTimeSec) - ntpEpochOffset
nanos := (int64(rsp.TxTimeFrac) * 1e9) >> 32
showtime := time.Unix(int64(secs), nanos)
return showtime, nil
}
func UpdateSystemDate(dateTime string) error {
system := runtime.GOOS
if system == "linux" {
if _, err := gproc.ShellExec(`date -s "` + dateTime + `"`); err != nil {
return fmt.Errorf("update system date failed, err: %v", err)
}
return nil
}
return fmt.Errorf("The current system architecture does not support synchronization")
}