152 lines
4.2 KiB
JavaScript
152 lines
4.2 KiB
JavaScript
const urlUtil = require('url')
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const endOfStream = require('end-of-stream')
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const asyncQ = require('async-q')
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const pipe = require('pump')
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const LocalStorageStore = require('obs-store/lib/localStorage')
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const storeTransform = require('obs-store/lib/transform')
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const Migrator = require('./lib/migrator/')
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const migrations = require('./migrations/')
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const PortStream = require('./lib/port-stream.js')
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const notification = require('./lib/notifications.js')
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const MetamaskController = require('./metamask-controller')
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const extension = require('./lib/extension')
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const firstTimeState = require('./first-time-state')
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const STORAGE_KEY = 'metamask-config'
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const METAMASK_DEBUG = 'GULP_METAMASK_DEBUG'
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const log = require('loglevel')
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window.log = log
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log.setDefaultLevel(METAMASK_DEBUG ? 'debug' : 'warn')
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let popupIsOpen = false
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// state persistence
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const diskStore = new LocalStorageStore({ storageKey: STORAGE_KEY })
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// initialization flow
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asyncQ.waterfall([
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() => loadStateFromPersistence(),
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(initState) => setupController(initState),
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])
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.then(() => console.log('MetaMask initialization complete.'))
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.catch((err) => { console.error(err) })
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//
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// State and Persistence
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//
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function loadStateFromPersistence() {
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// migrations
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let migrator = new Migrator({ migrations })
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let initialState = migrator.generateInitialState(firstTimeState)
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return asyncQ.waterfall([
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// read from disk
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() => Promise.resolve(diskStore.getState() || initialState),
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// migrate data
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(versionedData) => migrator.migrateData(versionedData),
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// write to disk
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(versionedData) => {
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diskStore.putState(versionedData)
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return Promise.resolve(versionedData)
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},
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// resolve to just data
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(versionedData) => Promise.resolve(versionedData.data),
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])
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}
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function setupController (initState) {
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//
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// MetaMask Controller
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//
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const controller = new MetamaskController({
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// User confirmation callbacks:
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showUnconfirmedMessage: triggerUi,
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unlockAccountMessage: triggerUi,
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showUnapprovedTx: triggerUi,
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// initial state
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initState,
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})
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global.metamaskController = controller
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// setup state persistence
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pipe(
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controller.store,
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storeTransform(versionifyData),
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diskStore
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)
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function versionifyData(state) {
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let versionedData = diskStore.getState()
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versionedData.data = state
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return versionedData
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}
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//
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// connect to other contexts
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//
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extension.runtime.onConnect.addListener(connectRemote)
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function connectRemote (remotePort) {
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var isMetaMaskInternalProcess = remotePort.name === 'popup' || remotePort.name === 'notification'
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var portStream = new PortStream(remotePort)
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if (isMetaMaskInternalProcess) {
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// communication with popup
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popupIsOpen = popupIsOpen || (remotePort.name === 'popup')
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controller.setupTrustedCommunication(portStream, 'MetaMask', remotePort.name)
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// record popup as closed
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if (remotePort.name === 'popup') {
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endOfStream(portStream, () => {
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popupIsOpen = false
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})
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}
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} else {
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// communication with page
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var originDomain = urlUtil.parse(remotePort.sender.url).hostname
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controller.setupUntrustedCommunication(portStream, originDomain)
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}
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}
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//
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// User Interface setup
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//
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updateBadge()
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controller.txManager.on('updateBadge', updateBadge)
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controller.messageManager.on('updateBadge', updateBadge)
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// plugin badge text
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function updateBadge () {
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var label = ''
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var unapprovedTxCount = controller.txManager.unapprovedTxCount
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var unapprovedMsgCount = controller.messageManager.unapprovedMsgCount
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var count = unapprovedTxCount + unapprovedMsgCount
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if (count) {
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label = String(count)
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}
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extension.browserAction.setBadgeText({ text: label })
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extension.browserAction.setBadgeBackgroundColor({ color: '#506F8B' })
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}
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return Promise.resolve()
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}
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//
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// Etc...
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//
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// popup trigger
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function triggerUi () {
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if (!popupIsOpen) notification.show()
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}
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// On first install, open a window to MetaMask website to how-it-works.
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extension.runtime.onInstalled.addListener(function (details) {
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if ((details.reason === 'install') && (!METAMASK_DEBUG)) {
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extension.tabs.create({url: 'https://metamask.io/#how-it-works'})
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}
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})
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