mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-30 21:30:16 +00:00
85 lines
2.0 KiB
Go
Executable File
85 lines
2.0 KiB
Go
Executable File
// Copyright 2011 Google Inc. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package uuid
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
// A Domain represents a Version 2 domain
|
|
type Domain byte
|
|
|
|
// Domain constants for DCE Security (Version 2) UUIDs.
|
|
const (
|
|
Person = Domain(0)
|
|
Group = Domain(1)
|
|
Org = Domain(2)
|
|
)
|
|
|
|
// NewDCESecurity returns a DCE Security (Version 2) UUID.
|
|
//
|
|
// The domain should be one of Person, Group or Org.
|
|
// On a POSIX system the id should be the users UID for the Person
|
|
// domain and the users GID for the Group. The meaning of id for
|
|
// the domain Org or on non-POSIX systems is site defined.
|
|
//
|
|
// For a given domain/id pair the same token may be returned for up to
|
|
// 7 minutes and 10 seconds.
|
|
func NewDCESecurity(domain Domain, id uint32) UUID {
|
|
uuid := NewUUID()
|
|
if uuid != nil {
|
|
uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
|
|
uuid[9] = byte(domain)
|
|
binary.BigEndian.PutUint32(uuid[0:], id)
|
|
}
|
|
return uuid
|
|
}
|
|
|
|
// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
|
|
// domain with the id returned by os.Getuid.
|
|
//
|
|
// NewDCEPerson(Person, uint32(os.Getuid()))
|
|
func NewDCEPerson() UUID {
|
|
return NewDCESecurity(Person, uint32(os.Getuid()))
|
|
}
|
|
|
|
// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
|
|
// domain with the id returned by os.Getgid.
|
|
//
|
|
// NewDCEGroup(Group, uint32(os.Getgid()))
|
|
func NewDCEGroup() UUID {
|
|
return NewDCESecurity(Group, uint32(os.Getgid()))
|
|
}
|
|
|
|
// Domain returns the domain for a Version 2 UUID or false.
|
|
func (uuid UUID) Domain() (Domain, bool) {
|
|
if v, _ := uuid.Version(); v != 2 {
|
|
return 0, false
|
|
}
|
|
return Domain(uuid[9]), true
|
|
}
|
|
|
|
// Id returns the id for a Version 2 UUID or false.
|
|
func (uuid UUID) Id() (uint32, bool) {
|
|
if v, _ := uuid.Version(); v != 2 {
|
|
return 0, false
|
|
}
|
|
return binary.BigEndian.Uint32(uuid[0:4]), true
|
|
}
|
|
|
|
func (d Domain) String() string {
|
|
switch d {
|
|
case Person:
|
|
return "Person"
|
|
case Group:
|
|
return "Group"
|
|
case Org:
|
|
return "Org"
|
|
}
|
|
return fmt.Sprintf("Domain%d", int(d))
|
|
}
|