forked from keybase/client
/
device.go
157 lines (138 loc) · 3.12 KB
/
device.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package libkb
import (
"time"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
jsonw "github.com/keybase/go-jsonw"
)
const (
DeviceIDLen = 16
DeviceIDSuffix = 0x18
)
func NewDeviceID() (keybase1.DeviceID, error) {
var b []byte
b, err := RandBytes(DeviceIDLen)
if err != nil {
return "", err
}
b[DeviceIDLen-1] = DeviceIDSuffix
return keybase1.DeviceIDFromSlice(b)
}
type DeviceStatus struct {
Provisioned bool
Keyed bool
KeyAvailable bool
}
type Device struct {
ID keybase1.DeviceID `json:"id"`
Kid keybase1.KID `json:"kid,omitempty"`
Description *string `json:"name,omitempty"`
Status *int `json:"status,omitempty"`
Type string `json:"type"`
CTime keybase1.Time `json:"ctime"`
MTime keybase1.Time `json:"mtime"`
}
// NewPaperDevice creates a new paper backup key device
func NewPaperDevice(passphrasePrefix string) (*Device, error) {
did, err := NewDeviceID()
if err != nil {
return nil, err
}
s := DeviceStatusActive
desc := passphrasePrefix
d := &Device{
ID: did,
Type: DeviceTypePaper,
Status: &s,
Description: &desc,
}
return d, nil
}
func ParseDevice(jw *jsonw.Wrapper, t time.Time) (ret *Device, err error) {
var obj Device
if err = jw.UnmarshalAgain(&obj); err == nil {
ret = &obj
ret.CTime = keybase1.ToTime(t)
ret.MTime = keybase1.ToTime(t)
}
return
}
func (d *Device) Merge(d2 *Device) {
d.Type = d2.Type
if d2.Kid.Exists() {
d.Kid = d2.Kid
}
if d2.Description != nil {
d.Description = d2.Description
}
if d2.Status != nil {
d.Status = d2.Status
}
if d2.CTime.Before(d.CTime) && !d2.CTime.IsZero() {
d.CTime = d2.CTime
}
if d2.MTime.After(d.MTime) || d.MTime.IsZero() {
d.MTime = d2.MTime
}
}
func (d *Device) Export(lt LinkType) (*jsonw.Wrapper, error) {
dw, err := jsonw.NewObjectWrapper(d)
if err != nil {
return nil, err
}
if lt == LinkType(DelegationTypeSubkey) {
// subkeys shouldn't have name or type
if err := dw.DeleteKey("name"); err != nil {
return nil, err
}
if err := dw.DeleteKey("type"); err != nil {
return nil, err
}
}
// These were being set to 0, so don't include them
dw.DeleteKey("mtime")
dw.DeleteKey("ctime")
return dw, nil
}
func (d *Device) ProtExport() *keybase1.Device {
ex := &keybase1.Device{
Type: d.Type,
DeviceID: d.ID,
CTime: d.CTime,
MTime: d.MTime,
}
if d.Description != nil {
ex.Name = *d.Description
}
if d.Status != nil {
ex.Status = *d.Status
}
if d.Kid.Exists() {
ex.VerifyKey = d.Kid
}
return ex
}
func (d *Device) IsActive() bool {
if d.Status == nil {
return false
}
return *d.Status == DeviceStatusActive
}
func (d *Device) StatusString() string {
return DeviceStatusToString(d.Status)
}
func DeviceStatusToString(i *int) string {
if i == nil {
return "<nil>"
}
switch *i {
case DeviceStatusNone:
return "none"
case DeviceStatusActive:
return "active"
case DeviceStatusDefunct:
return "revoked"
}
return "unknown"
}