1 files changed, 431 insertions, 0 deletions
diff --git a/app/scripts/keyring-controller.js b/app/scripts/keyring-controller.js
new file mode 100644
index 000000000..28c920d22
--- /dev/null
+++ b/app/scripts/keyring-controller.js
@@ -0,0 +1,431 @@
+const async = require('async')
+const EventEmitter = require('events').EventEmitter
+const encryptor = require('./lib/encryptor')
+const messageManager = require('./lib/message-manager')
+const ethUtil = require('ethereumjs-util')
+const ethBinToOps = require('eth-bin-to-ops')
+const EthQuery = require('eth-query')
+const BN = ethUtil.BN
+const Transaction = require('ethereumjs-tx')
+const createId = require('web3-provider-engine/util/random-id')
+
+// Keyrings:
+const SimpleKeyring = require('./keyrings/simple')
+const keyringTypes = [
+  SimpleKeyring,
+]
+
+module.exports = class KeyringController extends EventEmitter {
+
+  constructor (opts) {
+    super()
+    this.web3 = opts.web3
+    this.configManager = opts.configManager
+    this.ethStore = opts.ethStore
+    this.encryptor = encryptor
+    this.keyringTypes = keyringTypes
+
+    this.keyrings = []
+    this.identities = {} // Essentially a name hash
+
+    this._unconfTxCbs = {}
+    this._unconfMsgCbs = {}
+
+    this.network = null
+  }
+
+  getState() {
+    return {
+      isInitialized: !!this.configManager.getVault(),
+      isUnlocked: !!this.key,
+      isConfirmed: true, // AUDIT this.configManager.getConfirmed(),
+      isEthConfirmed: this.configManager.getShouldntShowWarning(),
+      unconfTxs: this.configManager.unconfirmedTxs(),
+      transactions: this.configManager.getTxList(),
+      unconfMsgs: messageManager.unconfirmedMsgs(),
+      messages: messageManager.getMsgList(),
+      selectedAddress: this.configManager.getSelectedAccount(),
+      shapeShiftTxList: this.configManager.getShapeShiftTxList(),
+      currentFiat: this.configManager.getCurrentFiat(),
+      conversionRate: this.configManager.getConversionRate(),
+      conversionDate: this.configManager.getConversionDate(),
+      keyringTypes: this.keyringTypes.map((krt) => krt.type()),
+      identities: this.identities,
+      network: this.network,
+    }
+  }
+
+  setStore(ethStore) {
+    this.ethStore = ethStore
+  }
+
+  createNewVault(password, entropy, cb) {
+    const salt = this.encryptor.generateSalt()
+    this.configManager.setSalt(salt)
+    this.loadKey(password)
+    .then((key) => {
+      return this.encryptor.encryptWithKey(key, [])
+    })
+    .then((encryptedString) => {
+      this.configManager.setVault(encryptedString)
+      cb(null, this.getState())
+    })
+    .catch((err) => {
+      cb(err)
+    })
+  }
+
+  submitPassword(password, cb) {
+    this.loadKey(password)
+    .then((key) => {
+      return this.unlockKeyrings(key)
+    })
+    .then(() => {
+      cb(null, this.getState())
+    })
+    .catch((err) => {
+      cb(err)
+    })
+  }
+
+  loadKey(password) {
+    const salt = this.configManager.getSalt() || this.encryptor.generateSalt()
+    return this.encryptor.keyFromPassword(password + salt)
+    .then((key) => {
+      this.key = key
+      return key
+    })
+  }
+
+  addNewKeyring(type, opts, cb) {
+    const i = this.getAccounts().length
+    const Keyring = this.getKeyringClassForType(type)
+    const keyring = new Keyring(opts)
+    const accounts = keyring.addAccounts(1)
+
+    accounts.forEach((account) => {
+      this.loadBalanceAndNickname(account, i)
+    })
+
+    this.keyrings.push(keyring)
+    this.persistAllKeyrings()
+    .then(() => {
+      cb(this.getState())
+    })
+    .catch((reason) => {
+      cb(reason)
+    })
+  }
+
+  // Takes an account address and an iterator representing
+  // the current number of named accounts.
+  loadBalanceAndNickname(account, i) {
+    const address = ethUtil.addHexPrefix(account)
+    this.ethStore.addAccount(address)
+    const oldNickname = this.configManager.nicknameForWallet(address)
+    const name = oldNickname || `Account ${++i}`
+    this.identities[address] = {
+      address,
+      name,
+    }
+    this.saveAccountLabel(address, name)
+  }
+
+  saveAccountLabel (account, label, cb) {
+    const address = ethUtil.addHexPrefix(account)
+    const configManager = this.configManager
+    configManager.setNicknameForWallet(address, label)
+    if (cb) {
+      cb(null, label)
+    }
+  }
+
+  persistAllKeyrings() {
+    const serialized = this.keyrings.map((k) => {
+      return {
+        type: k.type,
+        // keyring.serialize() must return a JSON-encodable object.
+        data: k.serialize(),
+      }
+    })
+    return this.encryptor.encryptWithKey(this.key, serialized)
+    .then((encryptedString) => {
+      this.configManager.setVault(encryptedString)
+      return true
+    })
+    .catch((reason) => {
+      console.error('Failed to persist keyrings.', reason)
+    })
+  }
+
+  unlockKeyrings(key) {
+    const encryptedVault = this.configManager.getVault()
+    return this.encryptor.decryptWithKey(key, encryptedVault)
+    .then((vault) => {
+      this.keyrings = vault.map(this.restoreKeyring.bind(this, 0))
+      return this.keyrings
+    })
+  }
+
+  restoreKeyring(i, serialized) {
+    const { type, data } = serialized
+    const Keyring = this.getKeyringClassForType(type)
+    const keyring = new Keyring()
+    keyring.deserialize(data)
+
+    keyring.getAccounts().forEach((account) => {
+      this.loadBalanceAndNickname(account, i)
+    })
+
+    return keyring
+  }
+
+  getKeyringClassForType(type) {
+    const Keyring = this.keyringTypes.reduce((res, kr) => {
+      if (kr.type() === type) {
+        return kr
+      } else {
+        return res
+      }
+    })
+    return Keyring
+  }
+
+  getAccounts() {
+    const keyrings = this.keyrings || []
+    return keyrings.map(kr => kr.getAccounts())
+    .reduce((res, arr) => {
+      return res.concat(arr)
+    }, [])
+  }
+
+  setSelectedAddress(address, cb) {
+    this.configManager.setSelectedAccount(address)
+    cb(null, address)
+  }
+
+  addUnconfirmedTransaction(txParams, onTxDoneCb, cb) {
+    var self = this
+    const configManager = this.configManager
+
+    // create txData obj with parameters and meta data
+    var time = (new Date()).getTime()
+    var txId = createId()
+    txParams.metamaskId = txId
+    txParams.metamaskNetworkId = this.network
+    var txData = {
+      id: txId,
+      txParams: txParams,
+      time: time,
+      status: 'unconfirmed',
+      gasMultiplier: configManager.getGasMultiplier() || 1,
+    }
+
+    console.log('addUnconfirmedTransaction:', txData)
+
+    // keep the onTxDoneCb around for after approval/denial (requires user interaction)
+    // This onTxDoneCb fires completion to the Dapp's write operation.
+    this._unconfTxCbs[txId] = onTxDoneCb
+
+    var provider = this.ethStore._query.currentProvider
+    var query = new EthQuery(provider)
+
+    // calculate metadata for tx
+    async.parallel([
+      analyzeForDelegateCall,
+      estimateGas,
+    ], didComplete)
+
+    // perform static analyis on the target contract code
+    function analyzeForDelegateCall(cb){
+      if (txParams.to) {
+        query.getCode(txParams.to, function (err, result) {
+          if (err) return cb(err)
+          var code = ethUtil.toBuffer(result)
+          if (code !== '0x') {
+            var ops = ethBinToOps(code)
+            var containsDelegateCall = ops.some((op) => op.name === 'DELEGATECALL')
+            txData.containsDelegateCall = containsDelegateCall
+            cb()
+          } else {
+            cb()
+          }
+        })
+      } else {
+        cb()
+      }
+    }
+
+    function estimateGas(cb){
+      query.estimateGas(txParams, function(err, result){
+        if (err) return cb(err)
+        txData.estimatedGas = self.addGasBuffer(result)
+        cb()
+      })
+    }
+
+    function didComplete (err) {
+      if (err) return cb(err)
+      configManager.addTx(txData)
+      // signal update
+      self.emit('update')
+      // signal completion of add tx
+      cb(null, txData)
+    }
+  }
+
+  addUnconfirmedMessage(msgParams, cb) {
+    // create txData obj with parameters and meta data
+    var time = (new Date()).getTime()
+    var msgId = createId()
+    var msgData = {
+      id: msgId,
+      msgParams: msgParams,
+      time: time,
+      status: 'unconfirmed',
+    }
+    messageManager.addMsg(msgData)
+    console.log('addUnconfirmedMessage:', msgData)
+
+    // keep the cb around for after approval (requires user interaction)
+    // This cb fires completion to the Dapp's write operation.
+    this._unconfMsgCbs[msgId] = cb
+
+    // signal update
+    this.emit('update')
+    return msgId
+  }
+
+  approveTransaction(txId, cb) {
+    const configManager = this.configManager
+    var approvalCb = this._unconfTxCbs[txId] || noop
+
+    // accept tx
+    cb()
+    approvalCb(null, true)
+    // clean up
+    configManager.confirmTx(txId)
+    delete this._unconfTxCbs[txId]
+    this.emit('update')
+  }
+
+  cancelTransaction(txId, cb) {
+    const configManager = this.configManager
+    var approvalCb = this._unconfTxCbs[txId] || noop
+
+    // reject tx
+    approvalCb(null, false)
+    // clean up
+    configManager.rejectTx(txId)
+    delete this._unconfTxCbs[txId]
+
+    if (cb && typeof cb === 'function') {
+      cb()
+    }
+  }
+
+  signTransaction(txParams, cb) {
+    try {
+      const address = ethUtil.addHexPrefix(txParams.from.toLowercase())
+      const keyring = this.getKeyringForAccount(address)
+
+      // Handle gas pricing
+      var gasMultiplier = this.configManager.getGasMultiplier() || 1
+      var gasPrice = new BN(ethUtil.stripHexPrefix(txParams.gasPrice), 16)
+      gasPrice = gasPrice.mul(new BN(gasMultiplier * 100, 10)).div(new BN(100, 10))
+      txParams.gasPrice = ethUtil.intToHex(gasPrice.toNumber())
+
+      // normalize values
+      txParams.to = ethUtil.addHexPrefix(txParams.to.toLowerCase())
+      txParams.from = ethUtil.addHexPrefix(txParams.from.toLowerCase())
+      txParams.value = ethUtil.addHexPrefix(txParams.value)
+      txParams.data = ethUtil.addHexPrefix(txParams.data)
+      txParams.gasLimit = ethUtil.addHexPrefix(txParams.gasLimit || txParams.gas)
+      txParams.nonce = ethUtil.addHexPrefix(txParams.nonce)
+
+      let tx = new Transaction(txParams)
+      tx = keyring.signTransaction(address, tx)
+
+      // Add the tx hash to the persisted meta-tx object
+      var txHash = ethUtil.bufferToHex(tx.hash())
+      var metaTx = this.configManager.getTx(txParams.metamaskId)
+      metaTx.hash = txHash
+      this.configManager.updateTx(metaTx)
+
+      // return raw serialized tx
+      var rawTx = ethUtil.bufferToHex(tx.serialize())
+      cb(null, rawTx)
+    } catch (e) {
+      cb(e)
+    }
+  }
+
+  signMessage(msgParams, cb) {
+    try {
+      const keyring = this.getKeyringForAccount(msgParams.from)
+      const address = ethUtil.addHexPrefix(msgParams.from.toLowercase())
+      const rawSig = keyring.signMessage(address, msgParams.data)
+      cb(null, rawSig)
+    } catch (e) {
+      cb(e)
+    }
+  }
+
+  getKeyringForAccount(address) {
+    const hexed = ethUtil.addHexPrefix(address.toLowerCase())
+    return this.keyrings.find((ring) => {
+      return ring.getAccounts()
+      .map(acct => ethUtil.addHexPrefix(acct.toLowerCase()))
+      .includes(hexed)
+    })
+  }
+
+  cancelMessage(msgId, cb) {
+    if (cb && typeof cb === 'function') {
+      cb()
+    }
+  }
+
+  setLocked(cb) {
+    this.key = null
+    this.keyrings = []
+    cb()
+  }
+
+  exportAccount(address, cb) {
+    cb(null, '0xPrivateKey')
+  }
+
+  tryPassword(password, cb) {
+    cb()
+  }
+
+  getNetwork(err) {
+    if (err) {
+      this.network = 'loading'
+      this.emit('update')
+    }
+
+    this.web3.version.getNetwork((err, network) => {
+      if (err) {
+        this.network = 'loading'
+        return this.emit('update')
+      }
+      if (global.METAMASK_DEBUG) {
+        console.log('web3.getNetwork returned ' + network)
+      }
+      this.network = network
+      this.emit('update')
+    })
+  }
+
+  addGasBuffer(gasHex) {
+    var gas = new BN(gasHex, 16)
+    var buffer = new BN('100000', 10)
+    var result = gas.add(buffer)
+    return ethUtil.addHexPrefix(result.toString(16))
+  }
+
+}
+
+function noop () {}