mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-12-01 19:06:43 +00:00
109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
package ntp
|
|
|
|
import (
|
|
"context"
|
|
"os"
|
|
"time"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/common/dialer"
|
|
"github.com/sagernet/sing-box/common/settings"
|
|
C "github.com/sagernet/sing-box/constant"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing/common"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
"github.com/sagernet/sing/common/logger"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
"github.com/sagernet/sing/common/ntp"
|
|
)
|
|
|
|
var _ adapter.TimeService = (*Service)(nil)
|
|
|
|
type Service struct {
|
|
ctx context.Context
|
|
cancel common.ContextCancelCauseFunc
|
|
server M.Socksaddr
|
|
writeToSystem bool
|
|
dialer N.Dialer
|
|
logger logger.Logger
|
|
ticker *time.Ticker
|
|
clockOffset time.Duration
|
|
}
|
|
|
|
func NewService(ctx context.Context, router adapter.Router, logger logger.Logger, options option.NTPOptions) *Service {
|
|
ctx, cancel := common.ContextWithCancelCause(ctx)
|
|
server := options.ServerOptions.Build()
|
|
if server.Port == 0 {
|
|
server.Port = 123
|
|
}
|
|
var interval time.Duration
|
|
if options.Interval > 0 {
|
|
interval = time.Duration(options.Interval)
|
|
} else {
|
|
interval = 30 * time.Minute
|
|
}
|
|
return &Service{
|
|
ctx: ctx,
|
|
cancel: cancel,
|
|
server: server,
|
|
writeToSystem: options.WriteToSystem,
|
|
dialer: dialer.New(router, options.DialerOptions),
|
|
logger: logger,
|
|
ticker: time.NewTicker(interval),
|
|
}
|
|
}
|
|
|
|
func (s *Service) Start() error {
|
|
err := s.update()
|
|
if err != nil {
|
|
return E.Cause(err, "initialize time")
|
|
}
|
|
s.logger.Info("updated time: ", s.TimeFunc()().Local().Format(C.TimeLayout))
|
|
go s.loopUpdate()
|
|
return nil
|
|
}
|
|
|
|
func (s *Service) Close() error {
|
|
s.ticker.Stop()
|
|
s.cancel(os.ErrClosed)
|
|
return nil
|
|
}
|
|
|
|
func (s *Service) TimeFunc() func() time.Time {
|
|
return func() time.Time {
|
|
return time.Now().Add(s.clockOffset)
|
|
}
|
|
}
|
|
|
|
func (s *Service) loopUpdate() {
|
|
for {
|
|
select {
|
|
case <-s.ctx.Done():
|
|
return
|
|
case <-s.ticker.C:
|
|
}
|
|
err := s.update()
|
|
if err == nil {
|
|
s.logger.Debug("updated time: ", s.TimeFunc()().Local().Format(C.TimeLayout))
|
|
} else {
|
|
s.logger.Warn("update time: ", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *Service) update() error {
|
|
response, err := ntp.Exchange(s.ctx, s.dialer, s.server)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
s.clockOffset = response.ClockOffset
|
|
if s.writeToSystem {
|
|
writeErr := settings.SetSystemTime(s.TimeFunc()())
|
|
if writeErr != nil {
|
|
s.logger.Warn("write time to system: ", writeErr)
|
|
}
|
|
}
|
|
return nil
|
|
}
|