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metamask-extension/app/scripts/metamask-controller.js
2017-03-27 16:05:21 -04:00

706 lines
23 KiB
JavaScript

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('./controllers/preferences')
const CurrencyController = require('./controllers/currency')
const NoticeController = require('./notice-controller')
const ShapeShiftController = require('./controllers/shapeshift')
const AddressBookController = require('./controllers/address-book')
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 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)
})
// address book controller
this.addressBookController = new AddressBookController({
initState: initState.AddressBookController,
}, this.keyringController)
// 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()
// 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.addressBookController.store.subscribe((state) => {
this.store.updateState({ AddressBookController: 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.addressBookController.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.addressBookController.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
const addressBookController = this.addressBookController
return {
// etc
getState: (cb) => cb(null, this.getState()),
setProviderType: this.setProviderType.bind(this),
useEtherscanProvider: this.useEtherscanProvider.bind(this),
setCurrentCurrency: this.setCurrentCurrency.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),
setDefaultRpc: nodeify(this.setDefaultRpc).bind(this),
setCustomRpc: nodeify(this.setCustomRpc).bind(this),
// AddressController
setAddressBook: nodeify(addressBookController.setAddressBook).bind(addressBookController),
// 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),
updateAndApproveTransaction: this.updateAndApproveTx.bind(this),
// 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) {
return this.keyringController.submitPassword(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) {
log.debug(`MetaMaskController newUnapprovedTransaction ${JSON.stringify(txParams)}`)
const self = this
self.txManager.addUnapprovedTransaction(txParams, (err, txMeta) => {
if (err) return cb(err)
self.sendUpdate()
self.opts.showUnapprovedTx(txMeta)
// listen for tx completion (success, fail)
self.txManager.once(`${txMeta.id}:finished`, (completedTx) => {
switch (completedTx.status) {
case 'submitted':
return cb(null, completedTx.hash)
case 'rejected':
return cb(new Error('MetaMask Tx Signature: User denied transaction signature.'))
default:
return cb(new Error(`MetaMask Tx Signature: Unknown problem: ${JSON.stringify(completedTx.txParams)}`))
}
})
})
}
newUnsignedMessage (msgParams, cb) {
let msgId = this.messageManager.addUnapprovedMessage(msgParams)
this.sendUpdate()
this.opts.showUnconfirmedMessage()
this.messageManager.once(`${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)}`))
}
})
}
updateAndApproveTx(txMeta, cb) {
log.debug(`MetaMaskController - updateAndApproveTx: ${JSON.stringify(txMeta)}`)
const txManager = this.txManager
txManager.updateTx(txMeta)
txManager.approveTransaction(txMeta.id, cb)
}
signMessage (msgParams, cb) {
log.info('MetaMaskController - signMessage')
const msgId = msgParams.metamaskId
// sets the status op the message to 'approved'
// and removes the metamaskId for signing
return this.messageManager.approveMessage(msgParams)
.then((cleanMsgParams) => {
// signs the message
return this.keyringController.signMessage(cleanMsgParams)
})
.then((rawSig) => {
// tells the listener that the message has been signed
// and can be returned to the dapp
this.messageManager.setMsgStatusSigned(msgId, rawSig)
return this.getState()
})
}
cancelMessage(msgId, cb) {
const messageManager = this.messageManager
messageManager.rejectMsg(msgId)
if (cb && typeof cb === 'function') {
cb(null, this.getState())
}
}
// Prefixed Style Message Signing Methods:
approvePersonalMessage (msgParams, cb) {
let msgId = this.personalMessageManager.addUnapprovedMessage(msgParams)
this.sendUpdate()
this.opts.showUnconfirmedMessage()
this.personalMessageManager.once(`${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: ${JSON.stringify(msgParams)}`))
}
})
}
signPersonalMessage (msgParams) {
log.info('MetaMaskController - signPersonalMessage')
const msgId = msgParams.metamaskId
// sets the status op the message to 'approved'
// and removes the metamaskId for signing
return this.personalMessageManager.approveMessage(msgParams)
.then((cleanMsgParams) => {
// signs the message
return this.keyringController.signPersonalMessage(cleanMsgParams)
})
.then((rawSig) => {
// tells the listener that the message has been signed
// and can be returned to the dapp
this.personalMessageManager.setMsgStatusSigned(msgId, rawSig)
return this.getState()
})
}
cancelPersonalMessage(msgId, cb) {
const messageManager = this.personalMessageManager
messageManager.rejectMsg(msgId)
if (cb && typeof cb === 'function') {
cb(null, this.getState())
}
}
markAccountsFound (cb) {
this.configManager.setLostAccounts([])
this.sendUpdate()
cb(null, this.getState())
}
restoreOldVaultAccounts(migratorOutput) {
const { serialized } = migratorOutput
return this.keyringController.restoreKeyring(serialized)
.then(() => migratorOutput)
}
restoreOldLostAccounts(migratorOutput) {
const { lostAccounts } = migratorOutput
if (lostAccounts) {
this.configManager.setLostAccounts(lostAccounts.map(acct => acct.address))
return this.importLostAccounts(migratorOutput)
}
return Promise.resolve(migratorOutput)
}
// IMPORT LOST ACCOUNTS
// @Object with key lostAccounts: @Array accounts <{ address, privateKey }>
// Uses the array's private keys to create a new Simple Key Pair keychain
// and add it to the keyring controller.
importLostAccounts ({ lostAccounts }) {
const privKeys = lostAccounts.map(acct => acct.privateKey)
return this.keyringController.restoreKeyring({
type: 'Simple Key Pair',
data: privKeys,
})
}
//
// config
//
// Log blocks
logBlock (block) {
if (global.METAMASK_DEBUG) {
console.log(`BLOCK CHANGED: #${block.number.toString('hex')} 0x${block.hash.toString('hex')}`)
}
this.verifyNetwork()
}
setCurrentCurrency (currencyCode, cb) {
try {
this.currencyController.setCurrentCurrency(currencyCode)
this.currencyController.updateConversionRate()
const data = {
conversionRate: this.currencyController.getConversionRate(),
currentCurrency: this.currencyController.getCurrentCurrency(),
conversionDate: this.currencyController.getConversionDate(),
}
cb(null, data)
} catch (err) {
cb(err)
}
}
buyEth (address, amount) {
if (!amount) amount = '5'
const network = this.getNetworkState()
let url
switch (network) {
case '1':
url = `https://buy.coinbase.com/?code=9ec56d01-7e81-5017-930c-513daa27bb6a&amount=${amount}&address=${address}&crypto_currency=ETH`
break
case '3':
url = 'https://faucet.metamask.io/'
break
case '42':
url = 'https://github.com/kovan-testnet/faucet'
break
}
if (url) extension.tabs.create({ url })
}
createShapeShiftTx (depositAddress, depositType) {
this.shapeshiftController.createShapeShiftTx(depositAddress, depositType)
}
//
// network
//
verifyNetwork () {
// Check network when restoring connectivity:
if (this.isNetworkLoading()) this.lookupNetwork()
}
setDefaultRpc () {
this.configManager.setRpcTarget('http://localhost:8545')
extension.runtime.reload()
this.lookupNetwork()
return Promise.resolve('http://localhost:8545')
}
setCustomRpc (rpcTarget, rpcList) {
this.configManager.setRpcTarget(rpcTarget)
return this.preferencesController.updateFrequentRpcList(rpcTarget)
.then(() => {
extension.runtime.reload()
this.lookupNetwork()
return Promise.resolve(rpcTarget)
})
}
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)
})
}
}