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/**
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* @file The entry point for the web extension singleton process.
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*/
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const urlUtil = require('url')
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const endOfStream = require('end-of-stream')
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const pump = require('pump')
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const debounce = require('debounce-stream')
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const log = require('loglevel')
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const extension = require('extensionizer')
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const LocalStorageStore = require('obs-store/lib/localStorage')
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const LocalStore = require('./lib/local-store')
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const storeTransform = require('obs-store/lib/transform')
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const asStream = require('obs-store/lib/asStream')
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const ExtensionPlatform = require('./platforms/extension')
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const Migrator = require('./lib/migrator/')
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const migrations = require('./migrations/')
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const PortStream = require('extension-port-stream')
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const createStreamSink = require('./lib/createStreamSink')
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const NotificationManager = require('./lib/notification-manager.js')
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const MetamaskController = require('./metamask-controller')
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const rawFirstTimeState = require('./first-time-state')
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const setupRaven = require('./lib/setupRaven')
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const reportFailedTxToSentry = require('./lib/reportFailedTxToSentry')
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const setupMetamaskMeshMetrics = require('./lib/setupMetamaskMeshMetrics')
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const EdgeEncryptor = require('./edge-encryptor')
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const getFirstPreferredLangCode = require('./lib/get-first-preferred-lang-code')
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const getObjStructure = require('./lib/getObjStructure')
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const ipfsContent = require('./lib/ipfsContent.js')
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const {
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ENVIRONMENT_TYPE_POPUP,
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ENVIRONMENT_TYPE_NOTIFICATION,
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ENVIRONMENT_TYPE_FULLSCREEN,
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} = require('./lib/enums')
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// METAMASK_TEST_CONFIG is used in e2e tests to set the default network to localhost
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const firstTimeState = Object.assign({}, rawFirstTimeState, global.METAMASK_TEST_CONFIG)
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const STORAGE_KEY = 'metamask-config'
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const METAMASK_DEBUG = process.env.METAMASK_DEBUG
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log.setDefaultLevel(process.env.METAMASK_DEBUG ? 'debug' : 'warn')
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const platform = new ExtensionPlatform()
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const notificationManager = new NotificationManager()
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global.METAMASK_NOTIFIER = notificationManager
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// setup sentry error reporting
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const release = platform.getVersion()
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const raven = setupRaven({ release })
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// browser check if it is Edge - https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
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// Internet Explorer 6-11
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const isIE = !!document.documentMode
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// Edge 20+
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const isEdge = !isIE && !!window.StyleMedia
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let ipfsHandle
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let popupIsOpen = false
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let notificationIsOpen = false
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const openMetamaskTabsIDs = {}
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// state persistence
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const diskStore = new LocalStorageStore({ storageKey: STORAGE_KEY })
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const localStore = new LocalStore()
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let versionedData
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// initialization flow
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initialize().catch(log.error)
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// setup metamask mesh testing container
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setupMetamaskMeshMetrics()
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/**
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* An object representing a transaction, in whatever state it is in.
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* @typedef TransactionMeta
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*
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* @property {number} id - An internally unique tx identifier.
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* @property {number} time - Time the tx was first suggested, in unix epoch time (ms).
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* @property {string} status - The current transaction status (unapproved, signed, submitted, dropped, failed, rejected), as defined in `tx-state-manager.js`.
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* @property {string} metamaskNetworkId - The transaction's network ID, used for EIP-155 compliance.
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* @property {boolean} loadingDefaults - TODO: Document
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* @property {Object} txParams - The tx params as passed to the network provider.
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* @property {Object[]} history - A history of mutations to this TransactionMeta object.
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* @property {boolean} gasPriceSpecified - True if the suggesting dapp specified a gas price, prevents auto-estimation.
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* @property {boolean} gasLimitSpecified - True if the suggesting dapp specified a gas limit, prevents auto-estimation.
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* @property {string} estimatedGas - A hex string represented the estimated gas limit required to complete the transaction.
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* @property {string} origin - A string representing the interface that suggested the transaction.
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* @property {Object} nonceDetails - A metadata object containing information used to derive the suggested nonce, useful for debugging nonce issues.
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* @property {string} rawTx - A hex string of the final signed transaction, ready to submit to the network.
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* @property {string} hash - A hex string of the transaction hash, used to identify the transaction on the network.
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* @property {number} submittedTime - The time the transaction was submitted to the network, in Unix epoch time (ms).
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*/
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/**
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* The data emitted from the MetaMaskController.store EventEmitter, also used to initialize the MetaMaskController. Available in UI on React state as state.metamask.
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* @typedef MetaMaskState
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* @property {boolean} isInitialized - Whether the first vault has been created.
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* @property {boolean} isUnlocked - Whether the vault is currently decrypted and accounts are available for selection.
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* @property {boolean} isAccountMenuOpen - Represents whether the main account selection UI is currently displayed.
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* @property {boolean} isMascara - True if the current context is the extensionless MetaMascara project.
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* @property {boolean} isPopup - Returns true if the current view is an externally-triggered notification.
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* @property {string} rpcTarget - DEPRECATED - The URL of the current RPC provider.
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* @property {Object} identities - An object matching lower-case hex addresses to Identity objects with "address" and "name" (nickname) keys.
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* @property {Object} unapprovedTxs - An object mapping transaction hashes to unapproved transactions.
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* @property {boolean} noActiveNotices - False if there are notices the user should confirm before using the application.
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* @property {Array} frequentRpcList - A list of frequently used RPCs, including custom user-provided ones.
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* @property {Array} addressBook - A list of previously sent to addresses.
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* @property {address} selectedTokenAddress - Used to indicate if a token is globally selected. Should be deprecated in favor of UI-centric token selection.
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* @property {Object} tokenExchangeRates - Info about current token prices.
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* @property {Array} tokens - Tokens held by the current user, including their balances.
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* @property {Object} send - TODO: Document
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* @property {Object} coinOptions - TODO: Document
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* @property {boolean} useBlockie - Indicates preferred user identicon format. True for blockie, false for Jazzicon.
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* @property {Object} featureFlags - An object for optional feature flags.
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* @property {string} networkEndpointType - TODO: Document
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* @property {boolean} isRevealingSeedWords - True if seed words are currently being recovered, and should be shown to user.
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* @property {boolean} welcomeScreen - True if welcome screen should be shown.
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* @property {string} currentLocale - A locale string matching the user's preferred display language.
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* @property {Object} provider - The current selected network provider.
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* @property {string} provider.rpcTarget - The address for the RPC API, if using an RPC API.
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* @property {string} provider.type - An identifier for the type of network selected, allows MetaMask to use custom provider strategies for known networks.
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* @property {string} network - A stringified number of the current network ID.
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* @property {Object} accounts - An object mapping lower-case hex addresses to objects with "balance" and "address" keys, both storing hex string values.
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* @property {hex} currentBlockGasLimit - The most recently seen block gas limit, in a lower case hex prefixed string.
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* @property {TransactionMeta[]} selectedAddressTxList - An array of transactions associated with the currently selected account.
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* @property {Object} unapprovedMsgs - An object of messages associated with the currently selected account, mapping a unique ID to the options.
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* @property {number} unapprovedMsgCount - The number of messages in unapprovedMsgs.
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* @property {Object} unapprovedPersonalMsgs - An object of messages associated with the currently selected account, mapping a unique ID to the options.
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* @property {number} unapprovedPersonalMsgCount - The number of messages in unapprovedPersonalMsgs.
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* @property {Object} unapprovedTypedMsgs - An object of messages associated with the currently selected account, mapping a unique ID to the options.
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* @property {number} unapprovedTypedMsgCount - The number of messages in unapprovedTypedMsgs.
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* @property {string[]} keyringTypes - An array of unique keyring identifying strings, representing available strategies for creating accounts.
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* @property {Keyring[]} keyrings - An array of keyring descriptions, summarizing the accounts that are available for use, and what keyrings they belong to.
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* @property {Object} computedBalances - Maps accounts to their balances, accounting for balance changes from pending transactions.
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* @property {string} currentAccountTab - A view identifying string for displaying the current displayed view, allows user to have a preferred tab in the old UI (between tokens and history).
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* @property {string} selectedAddress - A lower case hex string of the currently selected address.
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* @property {string} currentCurrency - A string identifying the user's preferred display currency, for use in showing conversion rates.
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* @property {number} conversionRate - A number representing the current exchange rate from the user's preferred currency to Ether.
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* @property {number} conversionDate - A unix epoch date (ms) for the time the current conversion rate was last retrieved.
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* @property {Object} infuraNetworkStatus - An object of infura network status checks.
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* @property {Block[]} recentBlocks - An array of recent blocks, used to calculate an effective but cheap gas price.
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* @property {Array} shapeShiftTxList - An array of objects describing shapeshift exchange attempts.
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* @property {Array} lostAccounts - TODO: Remove this feature. A leftover from the version-3 migration where our seed-phrase library changed to fix a bug where some accounts were mis-generated, but we recovered the old accounts as "lost" instead of losing them.
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* @property {boolean} forgottenPassword - Returns true if the user has initiated the password recovery screen, is recovering from seed phrase.
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*/
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/**
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* @typedef VersionedData
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* @property {MetaMaskState} data - The data emitted from MetaMask controller, or used to initialize it.
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* @property {Number} version - The latest migration version that has been run.
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*/
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/**
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* Initializes the MetaMask controller, and sets up all platform configuration.
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* @returns {Promise} Setup complete.
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*/
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async function initialize () {
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const initState = await loadStateFromPersistence()
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const initLangCode = await getFirstPreferredLangCode()
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await setupController(initState, initLangCode)
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|
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log.debug('MetaMask initialization complete.')
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|
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ipfsHandle = ipfsContent(initState.NetworkController.provider)
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}
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//
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|
|
// State and Persistence
|
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//
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/**
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* Loads any stored data, prioritizing the latest storage strategy.
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|
* Migrates that data schema in case it was last loaded on an older version.
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|
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* @returns {Promise<MetaMaskState>} Last data emitted from previous instance of MetaMask.
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|
|
*/
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|
|
async function loadStateFromPersistence () {
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|
|
// migrations
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const migrator = new Migrator({ migrations })
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// read from disk
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|
|
// first from preferred, async API:
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versionedData = (await localStore.get()) ||
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|
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diskStore.getState() ||
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|
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migrator.generateInitialState(firstTimeState)
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// check if somehow state is empty
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// this should never happen but new error reporting suggests that it has
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// for a small number of users
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// https://github.com/metamask/metamask-extension/issues/3919
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if (versionedData && !versionedData.data) {
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// try to recover from diskStore incase only localStore is bad
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|
|
const diskStoreState = diskStore.getState()
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if (diskStoreState && diskStoreState.data) {
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// we were able to recover (though it might be old)
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|
|
versionedData = diskStoreState
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const vaultStructure = getObjStructure(versionedData)
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|
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raven.captureMessage('MetaMask - Empty vault found - recovered from diskStore', {
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// "extra" key is required by Sentry
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extra: { vaultStructure },
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})
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} else {
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|
|
// unable to recover, clear state
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|
versionedData = migrator.generateInitialState(firstTimeState)
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|
|
raven.captureMessage('MetaMask - Empty vault found - unable to recover')
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|
|
}
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|
|
}
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|
|
|
|
|
// report migration errors to sentry
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|
|
migrator.on('error', (err) => {
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|
|
// get vault structure without secrets
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|
|
const vaultStructure = getObjStructure(versionedData)
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raven.captureException(err, {
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// "extra" key is required by Sentry
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extra: { vaultStructure },
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|
|
})
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|
|
})
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|
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|
|
// migrate data
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|
|
versionedData = await migrator.migrateData(versionedData)
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|
|
|
if (!versionedData) {
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|
|
throw new Error('MetaMask - migrator returned undefined')
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|
|
}
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// write to disk
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|
if (localStore.isSupported) {
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localStore.set(versionedData)
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|
} else {
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|
|
// throw in setTimeout so as to not block boot
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|
|
setTimeout(() => {
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|
throw new Error('MetaMask - Localstore not supported')
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|
})
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}
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// return just the data
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|
return versionedData.data
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}
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|
|
/**
|
|
|
|
* Initializes the MetaMask Controller with any initial state and default language.
|
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|
|
* Configures platform-specific error reporting strategy.
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|
|
* Streams emitted state updates to platform-specific storage strategy.
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|
* Creates platform listeners for new Dapps/Contexts, and sets up their data connections to the controller.
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*
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|
|
* @param {Object} initState - The initial state to start the controller with, matches the state that is emitted from the controller.
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|
|
* @param {String} initLangCode - The region code for the language preferred by the current user.
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|
|
* @returns {Promise} After setup is complete.
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|
*/
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|
|
function setupController (initState, initLangCode) {
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|
|
//
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|
|
|
// MetaMask Controller
|
|
|
|
//
|
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|
|
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|
|
const controller = new MetamaskController({
|
|
|
|
// User confirmation callbacks:
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|
|
|
showUnconfirmedMessage: triggerUi,
|
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|
|
unlockAccountMessage: triggerUi,
|
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|
|
showUnapprovedTx: triggerUi,
|
|
|
|
// initial state
|
|
|
|
initState,
|
|
|
|
// initial locale code
|
|
|
|
initLangCode,
|
|
|
|
// platform specific api
|
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|
|
platform,
|
|
|
|
encryptor: isEdge ? new EdgeEncryptor() : undefined,
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|
|
|
})
|
|
|
|
global.metamaskController = controller
|
|
|
|
|
|
|
|
controller.networkController.on('networkDidChange', () => {
|
|
|
|
ipfsHandle && ipfsHandle.remove()
|
|
|
|
ipfsHandle = ipfsContent(controller.networkController.providerStore.getState())
|
|
|
|
})
|
|
|
|
|
|
|
|
// report failed transactions to Sentry
|
|
|
|
controller.txController.on(`tx:status-update`, (txId, status) => {
|
|
|
|
if (status !== 'failed') return
|
|
|
|
const txMeta = controller.txController.txStateManager.getTx(txId)
|
|
|
|
try {
|
|
|
|
reportFailedTxToSentry({ raven, txMeta })
|
|
|
|
} catch (e) {
|
|
|
|
console.error(e)
|
|
|
|
}
|
|
|
|
})
|
|
|
|
|
|
|
|
// setup state persistence
|
|
|
|
pump(
|
|
|
|
asStream(controller.store),
|
|
|
|
debounce(1000),
|
|
|
|
storeTransform(versionifyData),
|
|
|
|
createStreamSink(persistData),
|
|
|
|
(error) => {
|
|
|
|
log.error('MetaMask - Persistence pipeline failed', error)
|
|
|
|
}
|
|
|
|
)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Assigns the given state to the versioned object (with metadata), and returns that.
|
|
|
|
* @param {Object} state - The state object as emitted by the MetaMaskController.
|
|
|
|
* @returns {VersionedData} The state object wrapped in an object that includes a metadata key.
|
|
|
|
*/
|
|
|
|
function versionifyData (state) {
|
|
|
|
versionedData.data = state
|
|
|
|
return versionedData
|
|
|
|
}
|
|
|
|
|
|
|
|
async function persistData (state) {
|
|
|
|
if (!state) {
|
|
|
|
throw new Error('MetaMask - updated state is missing', state)
|
|
|
|
}
|
|
|
|
if (!state.data) {
|
|
|
|
throw new Error('MetaMask - updated state does not have data', state)
|
|
|
|
}
|
|
|
|
if (localStore.isSupported) {
|
|
|
|
try {
|
|
|
|
await localStore.set(state)
|
|
|
|
} catch (err) {
|
|
|
|
// log error so we dont break the pipeline
|
|
|
|
log.error('error setting state in local store:', err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
|
|
// connect to other contexts
|
|
|
|
//
|
|
|
|
extension.runtime.onConnect.addListener(connectRemote)
|
|
|
|
extension.runtime.onConnectExternal.addListener(connectExternal)
|
|
|
|
|
|
|
|
const metamaskInternalProcessHash = {
|
|
|
|
[ENVIRONMENT_TYPE_POPUP]: true,
|
|
|
|
[ENVIRONMENT_TYPE_NOTIFICATION]: true,
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[ENVIRONMENT_TYPE_FULLSCREEN]: true,
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}
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|
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const isClientOpenStatus = () => {
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|
|
return popupIsOpen || Boolean(Object.keys(openMetamaskTabsIDs).length) || notificationIsOpen
|
|
|
|
}
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|
|
|
|
|
|
|
/**
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|
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|
* A runtime.Port object, as provided by the browser:
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|
|
* @see https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/runtime/Port
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|
|
* @typedef Port
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|
|
* @type Object
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Connects a Port to the MetaMask controller via a multiplexed duplex stream.
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|
|
* This method identifies trusted (MetaMask) interfaces, and connects them differently from untrusted (web pages).
|
|
|
|
* @param {Port} remotePort - The port provided by a new context.
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|
|
|
*/
|
|
|
|
function connectRemote (remotePort) {
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|
|
const processName = remotePort.name
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|
|
|
const isMetaMaskInternalProcess = metamaskInternalProcessHash[processName]
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|
|
|
|
|
|
|
if (isMetaMaskInternalProcess) {
|
|
|
|
const portStream = new PortStream(remotePort)
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|
|
|
// communication with popup
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|
|
|
controller.isClientOpen = true
|
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|
|
controller.setupTrustedCommunication(portStream, 'MetaMask')
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|
|
|
|
|
|
|
if (processName === ENVIRONMENT_TYPE_POPUP) {
|
|
|
|
popupIsOpen = true
|
|
|
|
|
|
|
|
endOfStream(portStream, () => {
|
|
|
|
popupIsOpen = false
|
|
|
|
controller.isClientOpen = isClientOpenStatus()
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
if (processName === ENVIRONMENT_TYPE_NOTIFICATION) {
|
|
|
|
notificationIsOpen = true
|
|
|
|
|
|
|
|
endOfStream(portStream, () => {
|
|
|
|
notificationIsOpen = false
|
|
|
|
controller.isClientOpen = isClientOpenStatus()
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
if (processName === ENVIRONMENT_TYPE_FULLSCREEN) {
|
|
|
|
const tabId = remotePort.sender.tab.id
|
|
|
|
openMetamaskTabsIDs[tabId] = true
|
|
|
|
|
|
|
|
endOfStream(portStream, () => {
|
|
|
|
delete openMetamaskTabsIDs[tabId]
|
|
|
|
controller.isClientOpen = isClientOpenStatus()
|
|
|
|
})
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
connectExternal(remotePort)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// communication with page or other extension
|
|
|
|
function connectExternal (remotePort) {
|
|
|
|
const originDomain = urlUtil.parse(remotePort.sender.url).hostname
|
|
|
|
const portStream = new PortStream(remotePort)
|
|
|
|
controller.setupUntrustedCommunication(portStream, originDomain)
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
|
|
// User Interface setup
|
|
|
|
//
|
|
|
|
|
|
|
|
updateBadge()
|
|
|
|
controller.txController.on('update:badge', updateBadge)
|
|
|
|
controller.messageManager.on('updateBadge', updateBadge)
|
|
|
|
controller.personalMessageManager.on('updateBadge', updateBadge)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Updates the Web Extension's "badge" number, on the little fox in the toolbar.
|
|
|
|
* The number reflects the current number of pending transactions or message signatures needing user approval.
|
|
|
|
*/
|
|
|
|
function updateBadge () {
|
|
|
|
var label = ''
|
|
|
|
var unapprovedTxCount = controller.txController.getUnapprovedTxCount()
|
|
|
|
var unapprovedMsgCount = controller.messageManager.unapprovedMsgCount
|
|
|
|
var unapprovedPersonalMsgs = controller.personalMessageManager.unapprovedPersonalMsgCount
|
|
|
|
var unapprovedTypedMsgs = controller.typedMessageManager.unapprovedTypedMessagesCount
|
|
|
|
var count = unapprovedTxCount + unapprovedMsgCount + unapprovedPersonalMsgs + unapprovedTypedMsgs
|
|
|
|
if (count) {
|
|
|
|
label = String(count)
|
|
|
|
}
|
|
|
|
extension.browserAction.setBadgeText({ text: label })
|
|
|
|
extension.browserAction.setBadgeBackgroundColor({ color: '#506F8B' })
|
|
|
|
}
|
|
|
|
|
|
|
|
return Promise.resolve()
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
|
|
// Etc...
|
|
|
|
//
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Opens the browser popup for user confirmation
|
|
|
|
*/
|
|
|
|
function triggerUi () {
|
|
|
|
extension.tabs.query({ active: true }, tabs => {
|
|
|
|
const currentlyActiveMetamaskTab = Boolean(tabs.find(tab => openMetamaskTabsIDs[tab.id]))
|
|
|
|
if (!popupIsOpen && !currentlyActiveMetamaskTab && !notificationIsOpen) {
|
|
|
|
notificationManager.showPopup()
|
|
|
|
}
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
// On first install, open a window to MetaMask website to how-it-works.
|
|
|
|
extension.runtime.onInstalled.addListener(function (details) {
|
|
|
|
if ((details.reason === 'install') && (!METAMASK_DEBUG)) {
|
|
|
|
extension.tabs.create({url: 'https://metamask.io/#how-it-works'})
|
|
|
|
}
|
|
|
|
})
|