aboutsummaryrefslogtreecommitdiffstats
path: root/app/scripts/metamask-controller.js
blob: f172c67a80341ede802f4ae403f59268369aaa89 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
const EventEmitter = require('events')
const extend = require('xtend')
const promiseToCallback = require('promise-to-callback')
const pipe = require('pump')
const Dnode = require('dnode')
const ObservableStore = require('obs-store')
const storeTransform = require('obs-store/lib/transform')
const EthStore = require('./lib/eth-store')
const EthQuery = require('eth-query')
const streamIntoProvider = require('web3-stream-provider/handler')
const MetaMaskProvider = require('web3-provider-engine/zero.js')
const setupMultiplex = require('./lib/stream-utils.js').setupMultiplex
const KeyringController = require('./keyring-controller')
const PreferencesController = require('./lib/controllers/preferences')
const CurrencyController = require('./lib/controllers/currency')
const NoticeController = require('./notice-controller')
const ShapeShiftController = require('./lib/controllers/shapeshift')
const MessageManager = require('./lib/message-manager')
const PersonalMessageManager = require('./lib/personal-message-manager')
const TxManager = require('./transaction-manager')
const ConfigManager = require('./lib/config-manager')
const extension = require('./lib/extension')
const autoFaucet = require('./lib/auto-faucet')
const nodeify = require('./lib/nodeify')
const IdStoreMigrator = require('./lib/idStore-migrator')
const accountImporter = require('./account-import-strategies')

const version = require('../manifest.json').version

module.exports = class MetamaskController extends EventEmitter {

  constructor (opts) {
    super()
    this.opts = opts
    let initState = opts.initState || {}

    // observable state store
    this.store = new ObservableStore(initState)

    // network store
    this.networkStore = new ObservableStore({ network: 'loading' })

    // config manager
    this.configManager = new ConfigManager({
      store: this.store,
    })

    // preferences controller
    this.preferencesController = new PreferencesController({
      initState: initState.PreferencesController,
    })

    // currency controller
    this.currencyController = new CurrencyController({
      initState: initState.CurrencyController,
    })
    this.currencyController.updateConversionRate()
    this.currencyController.scheduleConversionInterval()

    // rpc provider
    this.provider = this.initializeProvider()
    this.provider.on('block', this.logBlock.bind(this))
    this.provider.on('error', this.verifyNetwork.bind(this))

    // eth data query tools
    this.ethQuery = new EthQuery(this.provider)
    this.ethStore = new EthStore({
      provider: this.provider,
      blockTracker: this.provider,
    })

    // key mgmt
    this.keyringController = new KeyringController({
      initState: initState.KeyringController,
      ethStore: this.ethStore,
      getNetwork: this.getNetworkState.bind(this),
    })
    this.keyringController.on('newAccount', (address) => {
      this.preferencesController.setSelectedAddress(address)
      autoFaucet(address)
    })

    // tx mgmt
    this.txManager = new TxManager({
      initState: initState.TransactionManager,
      networkStore: this.networkStore,
      preferencesStore: this.preferencesController.store,
      txHistoryLimit: 40,
      getNetwork: this.getNetworkState.bind(this),
      signTransaction: this.keyringController.signTransaction.bind(this.keyringController),
      provider: this.provider,
      blockTracker: this.provider,
    })

    // notices
    this.noticeController = new NoticeController({
      initState: initState.NoticeController,
    })
    this.noticeController.updateNoticesList()
    // to be uncommented when retrieving notices from a remote server.
    // this.noticeController.startPolling()

    this.shapeshiftController = new ShapeShiftController({
      initState: initState.ShapeShiftController,
    })

    this.lookupNetwork()
    this.messageManager = new MessageManager()
    this.personalMessageManager = new PersonalMessageManager()
    this.publicConfigStore = this.initPublicConfigStore()

    // TEMPORARY UNTIL FULL DEPRECATION:
    this.idStoreMigrator = new IdStoreMigrator({
      configManager: this.configManager,
    })

    // manual disk state subscriptions
    this.txManager.store.subscribe((state) => {
      this.store.updateState({ TransactionManager: state })
    })
    this.keyringController.store.subscribe((state) => {
      this.store.updateState({ KeyringController: state })
    })
    this.preferencesController.store.subscribe((state) => {
      this.store.updateState({ PreferencesController: state })
    })
    this.currencyController.store.subscribe((state) => {
      this.store.updateState({ CurrencyController: state })
    })
    this.noticeController.store.subscribe((state) => {
      this.store.updateState({ NoticeController: state })
    })
    this.shapeshiftController.store.subscribe((state) => {
      this.store.updateState({ ShapeShiftController: state })
    })

    // manual mem state subscriptions
    this.networkStore.subscribe(this.sendUpdate.bind(this))
    this.ethStore.subscribe(this.sendUpdate.bind(this))
    this.txManager.memStore.subscribe(this.sendUpdate.bind(this))
    this.messageManager.memStore.subscribe(this.sendUpdate.bind(this))
    this.personalMessageManager.memStore.subscribe(this.sendUpdate.bind(this))
    this.keyringController.memStore.subscribe(this.sendUpdate.bind(this))
    this.preferencesController.store.subscribe(this.sendUpdate.bind(this))
    this.currencyController.store.subscribe(this.sendUpdate.bind(this))
    this.noticeController.memStore.subscribe(this.sendUpdate.bind(this))
    this.shapeshiftController.store.subscribe(this.sendUpdate.bind(this))
  }

  //
  // Constructor helpers
  //

  initializeProvider () {

    let provider = MetaMaskProvider({
      static: {
        eth_syncing: false,
        web3_clientVersion: `MetaMask/v${version}`,
      },
      rpcUrl: this.configManager.getCurrentRpcAddress(),
      // account mgmt
      getAccounts: (cb) => {
        let selectedAddress = this.preferencesController.getSelectedAddress()
        let result = selectedAddress ? [selectedAddress] : []
        cb(null, result)
      },
      // tx signing
      processTransaction: (txParams, cb) => this.newUnapprovedTransaction(txParams, cb),
      // old style msg signing
      processMessage: this.newUnsignedMessage.bind(this),

      // new style msg signing
      processPersonalMessage: this.newUnsignedPersonalMessage.bind(this),
    })
    return provider
  }

  initPublicConfigStore () {
    // get init state
    const publicConfigStore = new ObservableStore()

    // sync publicConfigStore with transform
    pipe(
      this.store,
      storeTransform(selectPublicState.bind(this)),
      publicConfigStore
    )

    function selectPublicState(state) {
      const result = { selectedAddress: undefined }
      try {
        result.selectedAddress = state.PreferencesController.selectedAddress
        result.networkVersion = this.getNetworkState()
      } catch (_) {}
      return result
    }

    return publicConfigStore
  }

  //
  // State Management
  //

  getState () {

    const wallet = this.configManager.getWallet()
    const vault = this.keyringController.store.getState().vault
    const isInitialized = (!!wallet || !!vault)
    return extend(
      {
        isInitialized,
      },
      this.networkStore.getState(),
      this.ethStore.getState(),
      this.txManager.memStore.getState(),
      this.messageManager.memStore.getState(),
      this.personalMessageManager.memStore.getState(),
      this.keyringController.memStore.getState(),
      this.preferencesController.store.getState(),
      this.currencyController.store.getState(),
      this.noticeController.memStore.getState(),
      // config manager
      this.configManager.getConfig(),
      this.shapeshiftController.store.getState(),
      {
        lostAccounts: this.configManager.getLostAccounts(),
        seedWords: this.configManager.getSeedWords(),
      }
    )
  }

  //
  // Remote Features
  //

  getApi () {
    const keyringController = this.keyringController
    const preferencesController = this.preferencesController
    const txManager = this.txManager
    const noticeController = this.noticeController

    return {
      // etc
      getState:              (cb) => cb(null, this.getState()),
      setRpcTarget:          this.setRpcTarget.bind(this),
      setProviderType:       this.setProviderType.bind(this),
      useEtherscanProvider:  this.useEtherscanProvider.bind(this),
      setCurrentCurrency:    this.setCurrentCurrency.bind(this),
      setGasMultiplier:      this.setGasMultiplier.bind(this),
      markAccountsFound:     this.markAccountsFound.bind(this),
      // coinbase
      buyEth: this.buyEth.bind(this),
      // shapeshift
      createShapeShiftTx: this.createShapeShiftTx.bind(this),

      // primary HD keyring management
      addNewAccount:              this.addNewAccount.bind(this),
      placeSeedWords:             this.placeSeedWords.bind(this),
      clearSeedWordCache:         this.clearSeedWordCache.bind(this),
      importAccountWithStrategy:  this.importAccountWithStrategy.bind(this),

      // vault management
      submitPassword: this.submitPassword.bind(this),

      // PreferencesController
      setSelectedAddress:        nodeify(preferencesController.setSelectedAddress).bind(preferencesController),

      // KeyringController
      setLocked:                 nodeify(keyringController.setLocked).bind(keyringController),
      createNewVaultAndKeychain: nodeify(keyringController.createNewVaultAndKeychain).bind(keyringController),
      createNewVaultAndRestore:  nodeify(keyringController.createNewVaultAndRestore).bind(keyringController),
      addNewKeyring:             nodeify(keyringController.addNewKeyring).bind(keyringController),
      saveAccountLabel:          nodeify(keyringController.saveAccountLabel).bind(keyringController),
      exportAccount:             nodeify(keyringController.exportAccount).bind(keyringController),

      // txManager
      approveTransaction:    txManager.approveTransaction.bind(txManager),
      cancelTransaction:     txManager.cancelTransaction.bind(txManager),

      // messageManager
      signMessage:           nodeify(this.signMessage).bind(this),
      cancelMessage:         this.cancelMessage.bind(this),

      // personalMessageManager
      signPersonalMessage:   nodeify(this.signPersonalMessage).bind(this),
      cancelPersonalMessage:         this.cancelPersonalMessage.bind(this),

      // notices
      checkNotices:   noticeController.updateNoticesList.bind(noticeController),
      markNoticeRead: noticeController.markNoticeRead.bind(noticeController),
    }
  }

  setupUntrustedCommunication (connectionStream, originDomain) {
    // setup multiplexing
    var mx = setupMultiplex(connectionStream)
    // connect features
    this.setupProviderConnection(mx.createStream('provider'), originDomain)
    this.setupPublicConfig(mx.createStream('publicConfig'))
  }

  setupTrustedCommunication (connectionStream, originDomain) {
    // setup multiplexing
    var mx = setupMultiplex(connectionStream)
    // connect features
    this.setupControllerConnection(mx.createStream('controller'))
    this.setupProviderConnection(mx.createStream('provider'), originDomain)
  }

  setupControllerConnection (outStream) {
    const api = this.getApi()
    const dnode = Dnode(api)
    outStream.pipe(dnode).pipe(outStream)
    dnode.on('remote', (remote) => {
      // push updates to popup
      const sendUpdate = remote.sendUpdate.bind(remote)
      this.on('update', sendUpdate)
    })
  }

  setupProviderConnection (outStream, originDomain) {
    streamIntoProvider(outStream, this.provider, logger)
    function logger (err, request, response) {
      if (err) return console.error(err)
      if (response.error) {
        console.error('Error in RPC response:\n', response.error)
      }
      if (request.isMetamaskInternal) return
      if (global.METAMASK_DEBUG) {
        console.log(`RPC (${originDomain}):`, request, '->', response)
      }
    }
  }

  setupPublicConfig (outStream) {
    pipe(
      this.publicConfigStore,
      outStream
    )
  }

  sendUpdate () {
    this.emit('update', this.getState())
  }

  //
  // Vault Management
  //

  submitPassword (password, cb) {
    this.migrateOldVaultIfAny(password)
    .then(this.keyringController.submitPassword.bind(this.keyringController, password))
    .then((newState) => { cb(null, newState) })
    .catch((reason) => { cb(reason) })
  }

  //
  // Opinionated Keyring Management
  //

  addNewAccount (cb) {
    const primaryKeyring = this.keyringController.getKeyringsByType('HD Key Tree')[0]
    if (!primaryKeyring) return cb(new Error('MetamaskController - No HD Key Tree found'))
    promiseToCallback(this.keyringController.addNewAccount(primaryKeyring))(cb)
  }

  // Adds the current vault's seed words to the UI's state tree.
  //
  // Used when creating a first vault, to allow confirmation.
  // Also used when revealing the seed words in the confirmation view.
  placeSeedWords (cb) {
    const primaryKeyring = this.keyringController.getKeyringsByType('HD Key Tree')[0]
    if (!primaryKeyring) return cb(new Error('MetamaskController - No HD Key Tree found'))
    primaryKeyring.serialize()
    .then((serialized) => {
      const seedWords = serialized.mnemonic
      this.configManager.setSeedWords(seedWords)
      cb()
    })
  }

  // ClearSeedWordCache
  //
  // Removes the primary account's seed words from the UI's state tree,
  // ensuring they are only ever available in the background process.
  clearSeedWordCache (cb) {
    this.configManager.setSeedWords(null)
    cb(null, this.preferencesController.getSelectedAddress())
  }

  importAccountWithStrategy (strategy, args, cb) {
    accountImporter.importAccount(strategy, args)
    .then((privateKey) => {
      return this.keyringController.addNewKeyring('Simple Key Pair', [ privateKey ])
    })
    .then(keyring => keyring.getAccounts())
    .then((accounts) => this.preferencesController.setSelectedAddress(accounts[0]))
    .then(() => { cb(null, this.keyringController.fullUpdate()) })
    .catch((reason) => { cb(reason) })
  }


  //
  // Identity Management
  //

  newUnapprovedTransaction (txParams, cb) {
    const self = this
    self.txManager.addUnapprovedTransaction(txParams, (err, txMeta) => {
      if (err) return cb(err)
      self.sendUpdate()
      self.opts.showUnapprovedTx(txMeta)
      // listen for tx completion (success, fail)
      self.txManager.once(`${txMeta.id}:finished`, (status) => {
        switch (status) {
          case 'submitted':
            return cb(null, txMeta.hash)
          case 'rejected':
            return cb(new Error('MetaMask Tx Signature: User denied transaction signature.'))
          default:
            return cb(new Error(`MetaMask Tx Signature: Unknown problem: ${JSON.stringify(txMeta.txParams)}`))
        }
      })
    })
  }

  newUnsignedMessage (msgParams, cb) {
    let msgId = this.messageManager.addUnapprovedMessage(msgParams)
    this.sendUpdate()
    this.opts.showUnconfirmedMessage()
    this.messageManager.once(`${msgId}:finished`, (data) => {
      switch (data.status) {
        case 'signed':
          return cb(null, data.rawSig)
        case 'rejected':
          return cb(new Error('MetaMask Message Signature: User denied message signature.'))
        default:
          return cb(new Error(`MetaMask Message Signature: Unknown problem: ${JSON.stringify(msgParams)}`))
      }
    })
  }

  newUnsignedPersonalMessage (msgParams, cb) {
    if (!msgParams.from) {
      return cb(new Error('MetaMask Message Signature: from field is required.'))
    }

    let msgId = this.personalMessageManager.addUnapprovedMessage(msgParams)
    this.sendUpdate()
    this.opts.showUnconfirmedMessage()
    this.personalMessageManager.once(`${msgId}:finished`, (data) => {
      switch (data.status) {
        case 'signed':
          return cb(null, data.rawSig)
        case 'rejected':
          return cb(new Error('MetaMask Message Signature: User denied message signature.'))
        default:
          return cb(new Error(`MetaMask Message Signature: Unknown problem: ${JSON.stringify(msgParams)}`))
      }
    })
  }

  signMessage (msgParams, cb) {
    log.info('MetaMaskController - signMessage')
    const msgId = msgParams.metamaskId

    // sets the status op the message to 'approved'
    // and removes the metamaskId for signing
    return this.messageManager.approveMessage(msgParams)
    .then((cleanMsgParams) => {
      // signs the message
      return this.keyringController.signMessage(cleanMsgParams)
    })
    .then((rawSig) => {
      // tells the listener that the message has been signed
      // and can be returned to the dapp
      this.messageManager.setMsgStatusSigned(msgId, rawSig)
      return this.getState()
    })
  }

  cancelMessage(msgId, cb) {
    const messageManager = this.messageManager
    messageManager.rejectMsg(msgId)
    if (cb && typeof cb === 'function') {
      cb(null, this.getState())
    }
  }

  // Prefixed Style Message Signing Methods:
  approvePersonalMessage (msgParams, cb) {
    let msgId = this.personalMessageManager.addUnapprovedMessage(msgParams)
    this.sendUpdate()
    this.opts.showUnconfirmedMessage()
    this.personalMessageManager.once(`${msgId}:finished`, (data) => {
      switch (data.status) {
        case 'signed':
          return cb(null, data.rawSig)
        case 'rejected':
          return cb(new Error('MetaMask Message Signature: User denied transaction signature.'))
        default:
          return cb(new Error(`MetaMask Message Signature: Unknown problem: ${JSON.stringify(msgParams)}`))
      }
    })
  }

  signPersonalMessage (msgParams) {
    log.info('MetaMaskController - signPersonalMessage')
    const msgId = msgParams.metamaskId
    // sets the status op the message to 'approved'
    // and removes the metamaskId for signing
    return this.personalMessageManager.approveMessage(msgParams)
    .then((cleanMsgParams) => {
      // signs the message
      return this.keyringController.signPersonalMessage(cleanMsgParams)
    })
    .then((rawSig) => {
      // tells the listener that the message has been signed
      // and can be returned to the dapp
      this.personalMessageManager.setMsgStatusSigned(msgId, rawSig)
      return this.getState()
    })
  }

  cancelPersonalMessage(msgId, cb) {
    const messageManager = this.personalMessageManager
    messageManager.rejectMsg(msgId)
    if (cb && typeof cb === 'function') {
      cb(null, this.getState())
    }
  }

  markAccountsFound (cb) {
    this.configManager.setLostAccounts([])
    this.sendUpdate()
    cb(null, this.getState())
  }

  // Migrate Old Vault If Any
  // @string password
  //
  // returns Promise()
  //
  // Temporary step used when logging in.
  // Checks if old style (pre-3.0.0) Metamask Vault exists.
  // If so, persists that vault in the new vault format
  // with the provided password, so the other unlock steps
  // may be completed without interruption.
  migrateOldVaultIfAny (password) {

    if (!this.checkIfShouldMigrate()) {
      return Promise.resolve(password)
    }

    const keyringController = this.keyringController

    return this.idStoreMigrator.migratedVaultForPassword(password)
    .then(this.restoreOldVaultAccounts.bind(this))
    .then(this.restoreOldLostAccounts.bind(this))
    .then(keyringController.persistAllKeyrings.bind(keyringController, password))
    .then(() => password)
  }

  checkIfShouldMigrate() {
    return !!this.configManager.getWallet() && !this.configManager.getVault()
  }

  restoreOldVaultAccounts(migratorOutput) {
    const { serialized } = migratorOutput
    return this.keyringController.restoreKeyring(serialized)
    .then(() => migratorOutput)
  }

  restoreOldLostAccounts(migratorOutput) {
    const { lostAccounts } = migratorOutput
    if (lostAccounts) {
      this.configManager.setLostAccounts(lostAccounts.map(acct => acct.address))
      return this.importLostAccounts(migratorOutput)
    }
    return Promise.resolve(migratorOutput)
  }

  // IMPORT LOST ACCOUNTS
  // @Object with key lostAccounts: @Array accounts <{ address, privateKey }>
  // Uses the array's private keys to create a new Simple Key Pair keychain
  // and add it to the keyring controller.
  importLostAccounts ({ lostAccounts }) {
    const privKeys = lostAccounts.map(acct => acct.privateKey)
    return this.keyringController.restoreKeyring({
      type: 'Simple Key Pair',
      data: privKeys,
    })
  }

  //
  // config
  //

  // Log blocks
  logBlock (block) {
    if (global.METAMASK_DEBUG) {
      console.log(`BLOCK CHANGED: #${block.number.toString('hex')} 0x${block.hash.toString('hex')}`)
    }
    this.verifyNetwork()
  }

  setCurrentCurrency (currencyCode, cb) {
    try {
      this.currencyController.setCurrentCurrency(currencyCode)
      this.currencyController.updateConversionRate()
      const data = {
        conversionRate: this.currencyController.getConversionRate(),
        currentFiat: this.currencyController.getCurrentCurrency(),
        conversionDate: this.currencyController.getConversionDate(),
      }
      cb(null, data)
    } catch (err) {
      cb(err)
    }
  }

  buyEth (address, amount) {
    if (!amount) amount = '5'

    const network = this.getNetworkState()
    let url

    switch (network) {
      case '1':
        url = `https://buy.coinbase.com/?code=9ec56d01-7e81-5017-930c-513daa27bb6a&amount=${amount}&address=${address}&crypto_currency=ETH`
        break

      case '3':
        url = 'https://faucet.metamask.io/'
        break
    }

    if (url) extension.tabs.create({ url })
  }

  createShapeShiftTx (depositAddress, depositType) {
    this.shapeshiftController.createShapeShiftTx(depositAddress, depositType)
  }

  setGasMultiplier (gasMultiplier, cb) {
    try {
      this.txManager.setGasMultiplier(gasMultiplier)
      cb()
    } catch (err) {
      cb(err)
    }
  }

  //
  // network
  //

  verifyNetwork () {
    // Check network when restoring connectivity:
    if (this.isNetworkLoading()) this.lookupNetwork()
  }

  setRpcTarget (rpcTarget) {
    this.configManager.setRpcTarget(rpcTarget)
    extension.runtime.reload()
    this.lookupNetwork()
  }

  setProviderType (type) {
    this.configManager.setProviderType(type)
    extension.runtime.reload()
    this.lookupNetwork()
  }

  useEtherscanProvider () {
    this.configManager.useEtherscanProvider()
    extension.runtime.reload()
  }

  getNetworkState () {
    return this.networkStore.getState().network
  }

  setNetworkState (network) {
    return this.networkStore.updateState({ network })
  }

  isNetworkLoading () {
    return this.getNetworkState() === 'loading'
  }

  lookupNetwork (err) {
    if (err) {
      this.setNetworkState('loading')
    }

    this.ethQuery.sendAsync({ method: 'net_version' }, (err, network) => {
      if (err) {
        this.setNetworkState('loading')
        return
      }
      if (global.METAMASK_DEBUG) {
        console.log('web3.getNetwork returned ' + network)
      }
      this.setNetworkState(network)
    })
  }

}