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 NoticeController = require('./notice-controller') const MessageManager = require('./lib/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, }) this.configManager.updateConversionRate() // preferences controller this.preferencesController = new PreferencesController({ initState: initState.PreferencesController, }) // rpc provider this.provider = this.initializeProvider(opts) 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.lookupNetwork() this.messageManager = new MessageManager() this.publicConfigStore = this.initPublicConfigStore() this.checkTOSChange() this.scheduleConversionInterval() // TEMPORARY UNTIL FULL DEPRECATION: this.idStoreMigrator = new IdStoreMigrator({ configManager: this.configManager, }) // manual disk state subscriptions this.keyringController.store.subscribe((state) => { this.store.updateState({ KeyringController: state }) }) this.preferencesController.store.subscribe((state) => { this.store.updateState({ PreferencesController: state }) }) this.txManager.store.subscribe((state) => { this.store.updateState({ TransactionManager: state }) }) // manual mem state subscriptions this.ethStore.subscribe(this.sendUpdate.bind(this)) this.networkStore.subscribe(this.sendUpdate.bind(this)) this.keyringController.memStore.subscribe(this.sendUpdate.bind(this)) this.txManager.memStore.subscribe(this.sendUpdate.bind(this)) this.messageManager.memStore.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), // msg signing processMessage: this.newUnsignedMessage.bind(this), }) return provider } initPublicConfigStore () { // get init state const publicConfigStore = new ObservableStore() // sync publicConfigStore with transform pipe( this.store, storeTransform(selectPublicState), publicConfigStore ) function selectPublicState(state) { const result = { selectedAddress: undefined } try { result.selectedAddress = state.PreferencesController.selectedAddress } 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.keyringController.memStore.getState(), this.preferencesController.store.getState(), this.noticeController.memStore.getState(), // config manager this.configManager.getConfig(), { shapeShiftTxList: this.configManager.getShapeShiftTxList(), lostAccounts: this.configManager.getLostAccounts(), currentFiat: this.configManager.getCurrentFiat(), conversionRate: this.configManager.getConversionRate(), conversionDate: this.configManager.getConversionDate(), isDisclaimerConfirmed: this.configManager.getConfirmedDisclaimer(), seedWords: this.configManager.getSeedWords(), } ) } // // Remote Features // getApi () { const keyringController = this.keyringController const preferencesController = this.preferencesController const txManager = this.txManager const messageManager = this.messageManager 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), agreeToDisclaimer: this.agreeToDisclaimer.bind(this), resetDisclaimer: this.resetDisclaimer.bind(this), setCurrentFiat: this.setCurrentFiat.bind(this), setTOSHash: this.setTOSHash.bind(this), checkTOSChange: this.checkTOSChange.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: this.signMessage.bind(this), cancelMessage: messageManager.rejectMsg.bind(messageManager), // 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 'approved': 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)}`)) } }) } signMessage (msgParams, cb) { 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.brodcastMessage(rawSig, msgId, 'approved') }).then(() => { cb() }).catch((err) => cb(err)) } 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, }) } // // disclaimer // agreeToDisclaimer (cb) { try { this.configManager.setConfirmedDisclaimer(true) cb() } catch (err) { cb(err) } } resetDisclaimer () { try { this.configManager.setConfirmedDisclaimer(false) } catch (e) { console.error(e) } } setTOSHash (hash) { try { this.configManager.setTOSHash(hash) } catch (err) { console.error('Error in setting terms of service hash.') } } checkTOSChange () { try { const storedHash = this.configManager.getTOSHash() || 0 if (storedHash !== global.TOS_HASH) { this.resetDisclaimer() this.setTOSHash(global.TOS_HASH) } } catch (err) { console.error('Error in checking TOS change.') } } // // config // // Log blocks logBlock (block) { if (global.METAMASK_DEBUG) { console.log(`BLOCK CHANGED: #${block.number.toString('hex')} 0x${block.hash.toString('hex')}`) } this.verifyNetwork() } setCurrentFiat (fiat, cb) { try { this.configManager.setCurrentFiat(fiat) this.configManager.updateConversionRate() this.scheduleConversionInterval() const data = { conversionRate: this.configManager.getConversionRate(), currentFiat: this.configManager.getCurrentFiat(), conversionDate: this.configManager.getConversionDate(), } cb(data) } catch (err) { cb(null, err) } } scheduleConversionInterval () { if (this.conversionInterval) { clearInterval(this.conversionInterval) } this.conversionInterval = setInterval(() => { this.configManager.updateConversionRate() }, 300000) } buyEth (address, amount) { if (!amount) amount = '5' const network = this.getNetworkState() let url switch (network) { case '1': url = `https://buy.coinbase.com/?code=9ec56d01-7e81-5017-930c-513daa27bb6a&amount=${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.configManager.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) }) } }