forked from keybase/client
/
device_wrap.go
139 lines (114 loc) · 3.5 KB
/
device_wrap.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 engine
import (
"fmt"
"github.com/keybase/client/go/libkb"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
)
// DeviceWrap is an engine that wraps DeviceRegister and
// DeviceKeygen.
type DeviceWrap struct {
libkb.Contextified
args *DeviceWrapArgs
signingKey libkb.GenericKey
encryptionKey libkb.NaclDHKeyPair
sharedDHKey libkb.GenericKey // can be nil
}
type DeviceWrapArgs struct {
Me *libkb.User
DeviceName string
DeviceType string
Lks *libkb.LKSec
IsEldest bool
Signer libkb.GenericKey
EldestKID keybase1.KID
SharedDHKeyring *libkb.SharedDHKeyring // optional in some cases
}
// NewDeviceWrap creates a DeviceWrap engine.
func NewDeviceWrap(args *DeviceWrapArgs, g *libkb.GlobalContext) *DeviceWrap {
return &DeviceWrap{
args: args,
Contextified: libkb.NewContextified(g),
}
}
// Name is the unique engine name.
func (e *DeviceWrap) Name() string {
return "DeviceWrap"
}
// GetPrereqs returns the engine prereqs.
func (e *DeviceWrap) Prereqs() Prereqs {
return Prereqs{}
}
// RequiredUIs returns the required UIs.
func (e *DeviceWrap) RequiredUIs() []libkb.UIKind {
return []libkb.UIKind{}
}
// SubConsumers returns the other UI consumers for this engine.
func (e *DeviceWrap) SubConsumers() []libkb.UIConsumer {
return []libkb.UIConsumer{
&DeviceRegister{},
&DeviceKeygen{},
}
}
// Run starts the engine.
func (e *DeviceWrap) Run(ctx *Context) error {
regArgs := &DeviceRegisterArgs{
Me: e.args.Me,
Name: e.args.DeviceName,
Lks: e.args.Lks,
}
regEng := NewDeviceRegister(regArgs, e.G())
if err := RunEngine(regEng, ctx); err != nil {
return err
}
deviceID := regEng.DeviceID()
kgArgs := &DeviceKeygenArgs{
Me: e.args.Me,
DeviceID: deviceID,
DeviceName: e.args.DeviceName,
DeviceType: e.args.DeviceType,
Lks: e.args.Lks,
IsEldest: e.args.IsEldest,
SharedDHKeyring: e.args.SharedDHKeyring,
}
kgEng := NewDeviceKeygen(kgArgs, e.G())
if err := RunEngine(kgEng, ctx); err != nil {
return err
}
pargs := &DeviceKeygenPushArgs{
Signer: e.args.Signer,
EldestKID: e.args.EldestKID,
}
if err := kgEng.Push(ctx, pargs); err != nil {
return err
}
e.signingKey = kgEng.SigningKey()
e.encryptionKey = kgEng.EncryptionKey()
// TODO get the shared dh key and save it if it was generated
if ctx.LoginContext != nil {
// Set the device id so that SetCachedSecretKey picks it up.
// Signup does this too, but by then it's too late.
if err := ctx.LoginContext.LocalSession().SetDeviceProvisioned(deviceID); err != nil {
// Not fatal. Because, um, it was working ok before.
e.G().Log.Warning("error saving session file: %s", err)
}
device := kgEng.device()
// cache the secret keys
ctx.LoginContext.SetCachedSecretKey(libkb.SecretKeyArg{Me: e.args.Me, KeyType: libkb.DeviceSigningKeyType}, e.signingKey, device)
ctx.LoginContext.SetCachedSecretKey(libkb.SecretKeyArg{Me: e.args.Me, KeyType: libkb.DeviceEncryptionKeyType}, e.encryptionKey, device)
}
return nil
}
func (e *DeviceWrap) SigningKey() libkb.GenericKey {
return e.signingKey
}
func (e *DeviceWrap) EncryptionKey() libkb.NaclDHKeyPair {
return e.encryptionKey
}
func (e *DeviceWrap) SharedDHKey() (libkb.GenericKey, error) {
if e.sharedDHKey == nil {
return nil, fmt.Errorf("DeviceWrap: no shared DH key")
}
return e.sharedDHKey, nil
}