passforios-gopenpgp/crypto/time.go
zugzwang ac8a49c114
Update lint (#44)
* Reduce complexity of SignatureCollector.Accept

* Add stylecheck linter, and lint accordingly

* Rephrase some comments

* godot - Top level comments should end with a dot.

* nestif - Reduce nested complexity of code

* Review changes

Co-authored-by: Aron Wussler <aron@wussler.it>
2020-04-28 13:55:36 +02:00

49 lines
1 KiB
Go

package crypto
import (
"errors"
"time"
)
// UpdateTime updates cached time.
func UpdateTime(newTime int64) {
pgp.latestServerTime = newTime
pgp.latestClientTime = time.Now()
}
// GetUnixTime gets latest cached time.
func GetUnixTime() int64 {
return getNow().Unix()
}
// GetTime gets latest cached time.
func GetTime() time.Time {
return getNow()
}
// ----- INTERNAL FUNCTIONS -----
// getNow returns current time.
func getNow() time.Time {
extrapolate, err := getDiff()
if err != nil {
return time.Now()
}
return time.Unix(pgp.latestServerTime+extrapolate, 0)
}
func getDiff() (int64, error) {
if pgp.latestServerTime > 0 && !pgp.latestClientTime.IsZero() {
// Since is monotonic, it uses a monotonic clock in this case instead of the wall clock
return int64(time.Since(pgp.latestClientTime).Seconds()), nil
}
return 0, errors.New("gopenpgp: latest server time not available")
}
// getTimeGenerator Returns a time generator function.
func getTimeGenerator() func() time.Time {
return getNow
}