30 lines
425 B
Go
30 lines
425 B
Go
package store
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"os"
|
|
)
|
|
|
|
var emptyBytes [20]byte
|
|
|
|
func GetOrCreatePeerID(p string) ([20]byte, error) {
|
|
idb, err := os.ReadFile(p)
|
|
if err == nil {
|
|
var out [20]byte
|
|
copy(out[:], idb)
|
|
|
|
return out, nil
|
|
}
|
|
|
|
if !os.IsNotExist(err) {
|
|
return emptyBytes, err
|
|
}
|
|
|
|
var out [20]byte
|
|
_, err = rand.Read(out[:])
|
|
if err != nil {
|
|
return emptyBytes, err
|
|
}
|
|
|
|
return out, os.WriteFile(p, out[:], 0755)
|
|
}
|