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
|
const urlUtil = require('url')
const endOfStream = require('end-of-stream')
const pipe = require('pump')
const log = require('loglevel')
const extension = require('extensionizer')
const LocalStorageStore = require('obs-store/lib/localStorage')
const storeTransform = require('obs-store/lib/transform')
const ExtensionPlatform = require('./platforms/extension')
const Migrator = require('./lib/migrator/')
const migrations = require('./migrations/')
const PortStream = require('./lib/port-stream.js')
const NotificationManager = require('./lib/notification-manager.js')
const MetamaskController = require('./metamask-controller')
const firstTimeState = require('./first-time-state')
const STORAGE_KEY = 'metamask-config'
const METAMASK_DEBUG = 'GULP_METAMASK_DEBUG'
window.log = log
log.setDefaultLevel(METAMASK_DEBUG ? 'debug' : 'warn')
const platform = new ExtensionPlatform()
const notificationManager = new NotificationManager()
global.METAMASK_NOTIFIER = notificationManager
let popupIsOpen = false
// state persistence
const diskStore = new LocalStorageStore({ storageKey: STORAGE_KEY })
// initialization flow
initialize().catch(log.error)
async function initialize () {
const initState = await loadStateFromPersistence()
await setupController(initState)
log.debug('MetaMask initialization complete.')
}
//
// State and Persistence
//
async function loadStateFromPersistence () {
// migrations
const migrator = new Migrator({ migrations })
// read from disk
let versionedData = diskStore.getState() || migrator.generateInitialState(firstTimeState)
// migrate data
versionedData = await migrator.migrateData(versionedData)
// write to disk
diskStore.putState(versionedData)
// return just the data
return versionedData.data
}
function setupController (initState) {
//
// MetaMask Controller
//
const controller = new MetamaskController({
// User confirmation callbacks:
showUnconfirmedMessage: triggerUi,
unlockAccountMessage: triggerUi,
showUnapprovedTx: triggerUi,
// initial state
initState,
// platform specific api
platform,
})
global.metamaskController = controller
// setup state persistence
pipe(
controller.store,
storeTransform(versionifyData),
diskStore
)
function versionifyData (state) {
const versionedData = diskStore.getState()
versionedData.data = state
return versionedData
}
//
// connect to other contexts
//
extension.runtime.onConnect.addListener(connectRemote)
function connectRemote (remotePort) {
const isMetaMaskInternalProcess = remotePort.name === 'popup' || remotePort.name === 'notification'
const portStream = new PortStream(remotePort)
if (isMetaMaskInternalProcess) {
// communication with popup
popupIsOpen = popupIsOpen || (remotePort.name === 'popup')
controller.setupTrustedCommunication(portStream, 'MetaMask')
// record popup as closed
if (remotePort.name === 'popup') {
endOfStream(portStream, () => {
popupIsOpen = false
})
}
} else {
// communication with page
const originDomain = urlUtil.parse(remotePort.sender.url).hostname
controller.setupUntrustedCommunication(portStream, originDomain)
}
}
//
// User Interface setup
//
updateBadge()
controller.txController.on('updateBadge', updateBadge)
controller.messageManager.on('updateBadge', updateBadge)
controller.personalMessageManager.on('updateBadge', updateBadge)
// plugin badge text
function updateBadge () {
var label = ''
var unapprovedTxCount = controller.txController.getUnapprovedTxCount()
var unapprovedMsgCount = controller.messageManager.unapprovedMsgCount
var unapprovedPersonalMsgs = controller.personalMessageManager.unapprovedPersonalMsgCount
var count = unapprovedTxCount + unapprovedMsgCount + unapprovedPersonalMsgs
if (count) {
label = String(count)
}
extension.browserAction.setBadgeText({ text: label })
extension.browserAction.setBadgeBackgroundColor({ color: '#506F8B' })
}
return Promise.resolve()
}
//
// Etc...
//
// popup trigger
function triggerUi () {
if (!popupIsOpen) 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'})
}
})
|
