aboutsummaryrefslogtreecommitdiffstats
path: root/app/scripts/lib/idStore.js
blob: 7a6968c6c49b837f0ea8fa21a1ad955a4d2da0fc (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
const EventEmitter = require('events').EventEmitter
const inherits = require('util').inherits
const ethUtil = require('ethereumjs-util')
const KeyStore = require('eth-lightwallet').keystore
const clone = require('clone')
const extend = require('xtend')
const autoFaucet = require('./auto-faucet')
const DEFAULT_RPC = 'https://testrpc.metamask.io/'
const IdManagement = require('./id-management')


module.exports = IdentityStore

inherits(IdentityStore, EventEmitter)
function IdentityStore (opts = {}) {
  EventEmitter.call(this)

  // we just use the ethStore to auto-add accounts
  this._ethStore = opts.ethStore
  this.configManager = opts.configManager
  // lightwallet key store
  this._keyStore = null
  // lightwallet wrapper
  this._idmgmt = null

  this.hdPathString = "m/44'/60'/0'/0"

  this._currentState = {
    selectedAddress: null,
    identities: {},
  }
  // not part of serilized metamask state - only kept in memory
}

//
// public
//

IdentityStore.prototype.createNewVault = function (password, cb) {
  delete this._keyStore
  var serializedKeystore = this.configManager.getWallet()

  if (serializedKeystore) {
    this.configManager.setData({})
  }

  this.purgeCache()
  this._createVault(password, null, (err) => {
    if (err) return cb(err)

    this._autoFaucet()

    this.configManager.setShowSeedWords(true)
    var seedWords = this._idmgmt.getSeed()

    this._loadIdentities()

    cb(null, seedWords)
  })
}

IdentityStore.prototype.recoverSeed = function (cb) {
  this.configManager.setShowSeedWords(true)
  if (!this._idmgmt) return cb(new Error('Unauthenticated. Please sign in.'))
  var seedWords = this._idmgmt.getSeed()
  cb(null, seedWords)
}

IdentityStore.prototype.recoverFromSeed = function (password, seed, cb) {
  this.purgeCache()

  this._createVault(password, seed, (err) => {
    if (err) return cb(err)

    this._loadIdentities()
    cb(null, this.getState())
  })
}

IdentityStore.prototype.setStore = function (store) {
  this._ethStore = store
}

IdentityStore.prototype.clearSeedWordCache = function (cb) {
  const configManager = this.configManager
  configManager.setShowSeedWords(false)
  cb(null, configManager.getSelectedAccount())
}

IdentityStore.prototype.getState = function () {
  const configManager = this.configManager
  var seedWords = this.getSeedIfUnlocked()
  return clone(extend(this._currentState, {
    isInitialized: !!configManager.getWallet() && !seedWords,
    isUnlocked: this._isUnlocked(),
    seedWords: seedWords,
    selectedAddress: configManager.getSelectedAccount(),
    gasMultiplier: configManager.getGasMultiplier(),
  }))
}

IdentityStore.prototype.getSeedIfUnlocked = function () {
  const configManager = this.configManager
  var showSeed = configManager.getShouldShowSeedWords()
  var idmgmt = this._idmgmt
  var shouldShow = showSeed && !!idmgmt
  var seedWords = shouldShow ? idmgmt.getSeed() : null
  return seedWords
}

IdentityStore.prototype.getSelectedAddress = function () {
  const configManager = this.configManager
  return configManager.getSelectedAccount()
}

IdentityStore.prototype.setSelectedAddressSync = function (address) {
  const configManager = this.configManager
  if (!address) {
    var addresses = this._getAddresses()
    address = addresses[0]
  }

  configManager.setSelectedAccount(address)
  return address
}

IdentityStore.prototype.setSelectedAddress = function (address, cb) {
  const resultAddress = this.setSelectedAddressSync(address)
  if (cb) return cb(null, resultAddress)
}

IdentityStore.prototype.revealAccount = function (cb) {
  const derivedKey = this._idmgmt.derivedKey
  const keyStore = this._keyStore
  const configManager = this.configManager

  keyStore.setDefaultHdDerivationPath(this.hdPathString)
  keyStore.generateNewAddress(derivedKey, 1)
  const addresses = keyStore.getAddresses()
  const address = addresses[ addresses.length - 1 ]

  this._ethStore.addAccount(ethUtil.addHexPrefix(address))

  configManager.setWallet(keyStore.serialize())

  this._loadIdentities()
  this._didUpdate()
  cb(null)
}

IdentityStore.prototype.getNetwork = function (err) {
  if (err) {
    this._currentState.network = 'loading'
    this._didUpdate()
  }

  this.web3.version.getNetwork((err, network) => {
    if (err) {
      this._currentState.network = 'loading'
      return this._didUpdate()
    }
    if (global.METAMASK_DEBUG) {
      console.log('web3.getNetwork returned ' + network)
    }
    this._currentState.network = network
    this._didUpdate()
  })
}

IdentityStore.prototype.setLocked = function (cb) {
  delete this._keyStore
  delete this._idmgmt
  cb()
}

IdentityStore.prototype.submitPassword = function (password, cb) {
  const configManager = this.configManager
  this.tryPassword(password, (err) => {
    if (err) return cb(err)
    // load identities before returning...
    this._loadIdentities()
    cb(null, configManager.getSelectedAccount())
  })
}

IdentityStore.prototype.exportAccount = function (address, cb) {
  var privateKey = this._idmgmt.exportPrivateKey(address)
  if (cb) cb(null, privateKey)
  return privateKey
}

// private
//

IdentityStore.prototype._didUpdate = function () {
  this.emit('update', this.getState())
}

IdentityStore.prototype._isUnlocked = function () {
  var result = Boolean(this._keyStore) && Boolean(this._idmgmt)
  return result
}

// load identities from keyStoreet
IdentityStore.prototype._loadIdentities = function () {
  const configManager = this.configManager
  if (!this._isUnlocked()) throw new Error('not unlocked')

  var addresses = this._getAddresses()
  addresses.forEach((address, i) => {
    // // add to ethStore
    if (this._ethStore) {
      this._ethStore.addAccount(ethUtil.addHexPrefix(address))
    }
    // add to identities
    const defaultLabel = 'Account ' + (i + 1)
    const nickname = configManager.nicknameForWallet(address)
    var identity = {
      name: nickname || defaultLabel,
      address: address,
      mayBeFauceting: this._mayBeFauceting(i),
    }
    this._currentState.identities[address] = identity
  })
  this._didUpdate()
}

IdentityStore.prototype.saveAccountLabel = function (account, label, cb) {
  const configManager = this.configManager
  configManager.setNicknameForWallet(account, label)
  this._loadIdentities()
  cb(null, label)
}

// mayBeFauceting
// If on testnet, index 0 may be fauceting.
// The UI will have to check the balance to know.
// If there is no balance and it mayBeFauceting,
// then it is in fact fauceting.
IdentityStore.prototype._mayBeFauceting = function (i) {
  const configManager = this.configManager
  var config = configManager.getProvider()
  if (i === 0 &&
      config.type === 'rpc' &&
      config.rpcTarget === DEFAULT_RPC) {
    return true
  }
  return false
}

//
// keyStore managment - unlocking + deserialization
//

IdentityStore.prototype.tryPassword = function (password, cb) {
  var serializedKeystore = this.configManager.getWallet()
  var keyStore = KeyStore.deserialize(serializedKeystore)

  keyStore.keyFromPassword(password, (err, pwDerivedKey) => {
    if (err) return cb(err)

    const isCorrect = keyStore.isDerivedKeyCorrect(pwDerivedKey)
    if (!isCorrect) return cb(new Error('Lightwallet - password incorrect'))

    this._keyStore = keyStore
    this._createIdMgmt(pwDerivedKey)
    cb()
  })
}

IdentityStore.prototype._createVault = function (password, seedPhrase, cb) {
  const opts = {
    password,
    hdPathString: this.hdPathString,
  }

  if (seedPhrase) {
    opts.seedPhrase = seedPhrase
  }

  KeyStore.createVault(opts, (err, keyStore) => {
    if (err) return cb(err)

    this._keyStore = keyStore

    keyStore.keyFromPassword(password, (err, derivedKey) => {
      if (err) return cb(err)

      this.purgeCache()

      keyStore.addHdDerivationPath(this.hdPathString, derivedKey, {curve: 'secp256k1', purpose: 'sign'})

      this._createFirstWallet(derivedKey)
      this._createIdMgmt(derivedKey)
      this.setSelectedAddressSync()

      cb()
    })
  })
}

IdentityStore.prototype._createIdMgmt = function (derivedKey) {
  this._idmgmt = new IdManagement({
    keyStore: this._keyStore,
    derivedKey: derivedKey,
    configManager: this.configManager,
  })
}

IdentityStore.prototype.purgeCache = function () {
  this._currentState.identities = {}
  let accounts
  try {
    accounts = Object.keys(this._ethStore._currentState.accounts)
  } catch (e) {
    accounts = []
  }
  accounts.forEach((address) => {
    this._ethStore.removeAccount(address)
  })
}

IdentityStore.prototype._createFirstWallet = function (derivedKey) {
  const keyStore = this._keyStore
  keyStore.setDefaultHdDerivationPath(this.hdPathString)
  keyStore.generateNewAddress(derivedKey, 1)
  this.configManager.setWallet(keyStore.serialize())
  var addresses = keyStore.getAddresses()
  this._ethStore.addAccount(ethUtil.addHexPrefix(addresses[0]))
}

// get addresses and normalize address hexString
IdentityStore.prototype._getAddresses = function () {
  return this._keyStore.getAddresses(this.hdPathString).map((address) => {
    return ethUtil.addHexPrefix(address)
  })
}

IdentityStore.prototype._autoFaucet = function () {
  var addresses = this._getAddresses()
  autoFaucet(addresses[0])
}

// util