camera working back and forth

app/scripts/contentscript.js

@@ -6,6 +6,7 @@ const PongStream = require('ping-pong-stream/pong')
 const ObjectMultiplex = require('obj-multiplex')
 const extension = require('extensionizer')
 const PortStream = require('./lib/port-stream.js')
+const Instascan = require('instascan')
 
 const inpageContent = fs.readFileSync(path.join(__dirname, '..', '..', 'dist', 'chrome', 'inpage.js')).toString()
 const inpageSuffix = '//# sourceURL=' + extension.extension.getURL('inpage.js') + '\n'
@@ -199,3 +200,49 @@ function redirectToPhishingWarning () {
   console.log('MetaMask - redirecting to phishing warning')
   window.location.href = 'https://metamask.io/phishing.html'
 }
+
+function initQrCodeScanner () {
+  // Append preview div
+  const preview = document.createElement('div')
+  preview.id = 'metamask-preview-wrapper'
+  preview.style = 'position:absolute; top: 20px; left: 20px; width: 300px; height: 300px; overflow: hidden; z-index: 999999999;'
+  const previewVideo = document.createElement('video')
+  previewVideo.id = 'metamask-preview-video'
+  previewVideo.style = 'width: 100%; height: 100%; object-fit: none; margin-left: -10%; margin-top: 10%;'
+  preview.appendChild(previewVideo)
+  document.body.appendChild(preview)
+  console.log('injected')
+  const scanner = new Instascan.Scanner({
+    video: document.getElementById('metamask-preview-video'),
+    backgroundScan: false,
+    continuous: true,
+  })
+  scanner.addListener('scan', function (content) {
+    console.log('QR-SCANNER: got code (IN-PAGE)', content)
+    scanner.stop().then(_ => {
+      console.log('QR-SCANNER: stopped scanner and sending msg (IN-PAGE)', content)
+      extension.runtime.sendMessage({
+        action: 'qr-code-scanner-data',
+        data: content,
+      })
+      console.log('QR-SCANNER: message sent (IN-PAGE)', content)
+      document.getElementById('metamask-preview-wrapper').parentElement.removeChild(document.getElementById('metamask-preview-wrapper'))
+    })
+  })
+  Instascan.Camera.getCameras().then(function (cameras) {
+    if (cameras.length > 0) {
+      scanner.start(cameras[0])
+    } else {
+      console.error('No cameras found.')
+    }
+  }).catch(function (e) {
+    console.error(e)
+  })
+}
+
+extension.runtime.onMessage.addListener(({ action }) => {
+  console.log('QR-SCANNER: message received (IN-PAGE)', action)
+  initQrCodeScanner()
+})
+console.log('QR-SCANNER: now listening (IN-PAGE)')
+

app/scripts/inpage.js

@@ -5,7 +5,6 @@ const log = require('loglevel')
 const LocalMessageDuplexStream = require('post-message-stream')
 const setupDappAutoReload = require('./lib/auto-reload.js')
 const MetamaskInpageProvider = require('./lib/inpage-provider.js')
-const Instascan = require('instascan')
 restoreContextAfterImports()
 
 log.setDefaultLevel(process.env.METAMASK_DEBUG ? 'debug' : 'warn')
@@ -98,40 +97,3 @@ function restoreContextAfterImports () {
   }
 }
 
-function initCameraScanner () {
-  // Append preview div
-  const preview = document.createElement('div')
-  preview.id = 'metamask-preview-wrapper'
-  preview.style = 'position:absolute; top: 20px; left: 20px; width: 300px; height: 300px; overflow: hidden; z-index: 999999999;'
-  const previewVideo = document.createElement('video')
-  previewVideo.id = 'metamask-preview-video'
-  previewVideo.style = 'width: 100%; height: 100%; object-fit: none; margin-left: -10%; margin-top: 10%;'
-  preview.appendChild(previewVideo)
-  document.body.appendChild(preview)
-  console.log('injected')
-  const scanner = new Instascan.Scanner({
-    video: document.getElementById('metamask-preview-video'),
-    backgroundScan: false,
-    continuous: true,
-  })
-  scanner.addListener('scan', function (content) {
-    alert(content)
-    scanner.stop().then(_ => {
-      document.getElementById('metamask-preview-wrapper').parentElement.removeChild(document.getElementById('metamask-preview-wrapper'))
-    })
-  })
-  Instascan.Camera.getCameras().then(function (cameras) {
-    if (cameras.length > 0) {
-      scanner.start(cameras[0])
-    } else {
-      console.error('No cameras found.')
-    }
-  }).catch(function (e) {
-    console.error(e)
-  })
-}
-
-setTimeout(_ => {
-  console.log('injecting...')
-  initCameraScanner()
-}, 3000)

app/scripts/metamask-controller.js

@@ -380,6 +380,9 @@ module.exports = class MetamaskController extends EventEmitter {
       // TREZOR
       unlockTrezorAccount: nodeify(this.unlockTrezorAccount, this),
 
+      // QR code scanner
+      scanQrCode: nodeify(this.scanQrCode, this),
+
       // vault management
       submitPassword: nodeify(this.submitPassword, this),
 
@@ -655,6 +658,25 @@ module.exports = class MetamaskController extends EventEmitter {
     return { ...keyState, identities }
   }
 
+  scanQrCode () {
+    return new Promise((resolve, reject) => {
+      console.log('QR-SCANNER: intializing QR code scanner feature (MM controller)')
+      // Tell contentscript to inject the QR reader
+      this.platform.sendMessage('qr-code-scanner-init')
+      console.log('QR-SCANNER: message to initialize has been sent (MM controller)')
+      // Wait for the scanner to send something back
+      this.platform.addMessageListener(({ action, data }) => {
+        console.log('QR-SCANNER: message received (MM controller)', action, data)
+        if (action && action === 'qr-code-scanner-data') {
+          const normalizedAddress = data.replace('ethereum:', '')
+          console.log('QR-SCANNER: resolving promise!', normalizedAddress)
+          return Promise.resolve(normalizedAddress)
+        }
+      })
+      console.log('QR-SCANNER: now listening (MM controller)')
+    })
+  }
+
 
   //
   // Account Management

app/scripts/platforms/extension.js

@@ -1,5 +1,4 @@
 const extension = require('extensionizer')
-const explorerLink = require('etherscan-link').createExplorerLink
 
 class ExtensionPlatform {
 
@@ -18,11 +17,8 @@ class ExtensionPlatform {
     return extension.runtime.getManifest().version
   }
 
-  openExtensionInBrowser (route = null) {
-    let extensionURL = extension.runtime.getURL('home.html')
-    if (route) {
-      extensionURL += `#${route}`
-    }
+  openExtensionInBrowser () {
+    const extensionURL = extension.runtime.getURL('home.html')
     this.openWindow({ url: extensionURL })
   }
 
@@ -36,58 +32,17 @@ class ExtensionPlatform {
     }
   }
 
-  showTransactionNotification (txMeta) {
-
-    const status = txMeta.status
-    if (status === 'confirmed') {
-      this._showConfirmedTransaction(txMeta)
-    } else if (status === 'failed') {
-      this._showFailedTransaction(txMeta)
-    }
+  addMessageListener (cb) {
+    extension.runtime.onMessage.addListener(cb)
   }
 
-  _showConfirmedTransaction (txMeta) {
-
-    this._subscribeToNotificationClicked()
-
-    const url = explorerLink(txMeta.hash, parseInt(txMeta.metamaskNetworkId))
-    const nonce = parseInt(txMeta.txParams.nonce, 16)
-
-    const title = 'Confirmed transaction'
-    const message = `Transaction ${nonce} confirmed! View on EtherScan`
-    this._showNotification(title, message, url)
-  }
-
-  _showFailedTransaction (txMeta) {
-
-    const nonce = parseInt(txMeta.txParams.nonce, 16)
-    const title = 'Failed transaction'
-    const message = `Transaction ${nonce} failed! ${txMeta.err.message}`
-    this._showNotification(title, message)
-  }
-
-  _showNotification (title, message, url) {
-    extension.notifications.create(
-      url,
-      {
-      'type': 'basic',
-      'title': title,
-      'iconUrl': extension.extension.getURL('../../images/icon-64.png'),
-      'message': message,
+  sendMessage (message, query = {}) {
+    extension.tabs.query(query, tabs => {
+      const activeTab = tabs.filter(tab => tab.active)[0]
+      extension.tabs.sendMessage(activeTab.id, message)
+      console.log('QR-SCANNER: message sent to tab', message, activeTab)
     })
   }
-
-  _subscribeToNotificationClicked () {
-    if (!extension.notifications.onClicked.hasListener(this._viewOnEtherScan)) {
-      extension.notifications.onClicked.addListener(this._viewOnEtherScan)
-    }
-  }
-
-  _viewOnEtherScan (txId) {
-    if (txId.startsWith('http://')) {
-      global.metamaskController.platform.openWindow({ url: txId })
-    }
-  }
 }
 
 module.exports = ExtensionPlatform

ui/app/actions.js

@@ -302,6 +302,7 @@ var actions = {
   CLEAR_PENDING_TOKENS: 'CLEAR_PENDING_TOKENS',
   setPendingTokens,
   clearPendingTokens,
+  scanQrCode,
 }
 
 module.exports = actions
@@ -2194,3 +2195,23 @@ function clearPendingTokens () {
     type: actions.CLEAR_PENDING_TOKENS,
   }
 }
+
+function scanQrCode () {
+  log.debug(`background.scanQrCode`)
+  return (dispatch, getState) => {
+    dispatch(actions.showLoadingIndication())
+    return new Promise((resolve, reject) => {
+      background.scanQrCode((err, data) => {
+        log.debug(`background.scanQrCode resolved!`, err, data)
+        if (err) {
+          log.error(err)
+          dispatch(actions.displayWarning(err.message))
+          return reject(err)
+        }
+
+        dispatch(actions.hideLoadingIndication())
+        return resolve(data)
+      })
+    })
+  }
+}

ui/app/components/send/send-content/send-content.component.js

@@ -11,6 +11,7 @@ export default class SendContent extends Component {
 
   static propTypes = {
     updateGas: PropTypes.func,
+    scanQrCode: PropTypes.func,
   };
 
   render () {
@@ -19,6 +20,7 @@ export default class SendContent extends Component {
         <div className="send-v2__form">
           <SendFromRow />
           <SendToRow updateGas={(updateData) => this.props.updateGas(updateData)} />
+          <button onClick={_ => this.props.scanQrCode() }>or scan a QR code</button>
           <SendAmountRow updateGas={(updateData) => this.props.updateGas(updateData)} />
           <SendGasRow />
           <SendHexDataRow />

ui/app/components/send/send.component.js

@@ -38,12 +38,19 @@ export default class SendTransactionScreen extends PersistentForm {
     updateAndSetGasTotal: PropTypes.func,
     updateSendErrors: PropTypes.func,
     updateSendTokenBalance: PropTypes.func,
+    scanQrCode: PropTypes.func,
   };
 
   static contextTypes = {
     t: PropTypes.func,
   };
 
+  scanQrCode = async () => {
+    const scannedAddress = await this.props.scanQrCode()
+    console.log('QR-SCANNER: Got address (UI)', scannedAddress)
+    this.updateGas({ to: scannedAddress })
+  }
+
   updateGas ({ to: updatedToAddress, amount: value } = {}) {
     const {
       amount,
@@ -170,7 +177,10 @@ export default class SendTransactionScreen extends PersistentForm {
     return (
       <div className="page-container">
         <SendHeader history={history}/>
-        <SendContent updateGas={(updateData) => this.updateGas(updateData)}/>
+        <SendContent
+          updateGas={(updateData) => this.updateGas(updateData)}
+          scanQrCode={_ => this.scanQrCode()}
+        />
         <SendFooter history={history}/>
       </div>
     )

ui/app/components/send/send.container.js

@@ -26,6 +26,7 @@ import {
   updateSendTokenBalance,
   updateGasData,
   setGasTotal,
+  scanQrCode,
 } from '../../actions'
 import {
   resetSendState,
@@ -89,5 +90,6 @@ function mapDispatchToProps (dispatch) {
     },
     updateSendErrors: newError => dispatch(updateSendErrors(newError)),
     resetSendState: () => dispatch(resetSendState()),
+    scanQrCode: () => dispatch(scanQrCode()),
   }
 }