Add /extensions endpoint

package.json

@@ -31,6 +31,7 @@
     "mongodb": "^2.1.4",
     "newrelic": "^1.25.3",
     "underscore": "^1.8.3",
+    "xmldoc": "^0.5.1",
     "yargs": "^3.31.0"
   },
   "devDependencies": {

src/controllers/extensions.js

@@ -0,0 +1,96 @@
+const builder = require('xmlbuilder')
+const xmldoc = require('xmldoc')
+const {comparableVersion} = require('../common')
+
+/**
+ * Extracts an array of requested extensions along with their version
+ *
+ * @param @requestXML - The input extension request XML protocol 3.0
+ * @return undefined if there was an error parsing the document, or an array of
+ *   [extensionId, extensionVersion] if successful.
+ */
+const getRequestedExtensions = (requestXML) => {
+  const doc = new xmldoc.XmlDocument(requestXML)
+  if (doc.attr.protocol !== '3.0') {
+    console.error('Only protocol v3 is supproted')
+    return undefined
+  }
+  const extensions = doc.childrenNamed('app')
+      .map((app) => [app.attr.appid, app.attr.version])
+  return extensions
+}
+
+/**
+ * Filters out to only the availableExtensions that should be updated for the request.
+ * For example some extensions may not be requested, and some may already have a fully
+ * updated, or even newer versions.
+ */
+const getExtensionsWithUpdates = (availableExtensions, requestedExtensions) =>
+  requestedExtensions.reduce((resultExtensions, requestedExtension) => {
+    const foundExtension = availableExtensions.find((extension) => extension[0] === requestedExtension[0])
+    if (foundExtension) {
+      if (comparableVersion(foundExtension[1]) > comparableVersion(requestedExtension[1])) {
+        resultExtensions.push(foundExtension)
+      }
+    }
+    return resultExtensions
+  }, [])
+
+const getExtensionsResponse = (baseCRXUrl, extensions) => {
+  const doc = builder
+    .create('response')
+      .att('protocol', '3.0')
+      .att('server', 'prod')
+  extensions.forEach(([extensionId, extensionVersion, extensionSHA256]) => {
+    doc.ele('app')
+      .att('appid', extensionId)
+      .ele('updatecheck')
+        .att('status', 'ok')
+        .ele('urls')
+          .ele('url')
+            .att('codebase', `${baseCRXUrl}/${extensionId}/extension_${extensionVersion.replace(/\./g, '_')}.crx`)
+          .up()
+        .up()
+      .ele('manifest')
+        .att('version', extensionVersion)
+        .ele('packages')
+          .ele('package')
+            .att('name', `extension_${extensionVersion.replace(/\./g, '_')}.crx`)
+            .att('hash_sha256', extensionSHA256)
+            .att('required', true)
+          .up()
+        .up()
+      .up()
+  })
+  return doc.toString({ pretty: true })
+}
+
+const setup = (runtime, availableExtensions) => {
+  let extensionsRoute = {
+    method: ['POST'],
+    path: '/extensions',
+    config: {
+      handler: function (request, reply) {
+        const requestedExtensions = getRequestedExtensions(request.payload.toString())
+        const extensionsWithUpdates = getExtensionsWithUpdates(availableExtensions, requestedExtensions)
+        reply(getExtensionsResponse('https://s3.amazonaws.com/brave-extensions/release', extensionsWithUpdates))
+          .type('application/xml')
+      },
+      payload: {
+        parse: false,
+        allow: 'application/xml'
+      }
+    }
+  }
+
+  return [
+    extensionsRoute
+  ]
+}
+
+module.exports = {
+  getRequestedExtensions,
+  getExtensionsWithUpdates,
+  getExtensionsResponse,
+  setup
+}

src/index.js

@@ -23,6 +23,7 @@ let mq = require('./mq')
 
 // Read in the channel / platform releases meta-data
 let releases = setup.readReleases('data')
+let extensions = setup.readExtensions()
 
 if (process.env.DEBUG) {
   console.log(_.keys(releases))
@@ -37,7 +38,8 @@ mq.setup((sender) => {
     }
 
     // POST, DEL and GET /1/releases/{platform}/{version}
-    let routes = require('./controllers/releases').setup(runtime, releases)
+    let releaseRoutes = require('./controllers/releases').setup(runtime, releases)
+    let extensionRoutes = require('./controllers/extensions').setup(runtime, extensions)
     let crashes = require('./controllers/crashes').setup(runtime)
     let monitoring = require('./controllers/monitoring').setup(runtime)
 
@@ -80,7 +82,7 @@ mq.setup((sender) => {
     server.route(
       [
         common.root
-      ].concat(routes, crashes, monitoring)
+      ].concat(releaseRoutes, extensionRoutes, crashes, monitoring)
     )
 
     server.start((err) => {

src/setup.js

@@ -46,3 +46,16 @@ exports.readReleases = (directory) => {
 
   return releases
 }
+
+// I'm not sure how we'll organize this in the future, but for now just pass along static data
+// Format is: [extensionId, version, hash]
+exports.readExtensions = () => [
+  // 1Password
+  ['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90', 'f75d7808766429ec63ec41d948c1cb6a486407945d604961c6adf54fe3f459b7'],
+  // PDFJS
+  ['oemmndcbldboiebfnladdacbdfmadadm', '1.5.294', '499e05d5cde9a1e735e29fa49af7839690f34eb27a3d952b8e4396ea50c77526'],
+  // Dashlane
+  ['fdjamakpfbbddfjaooikfcpapjohcfmg', '4.2.4', '0be29a787290db4c554fd7c77e5c45939d2161688b6cb6b51d39cdedb9cc69d4'],
+  // LastPass
+  ['hdokiejnpimakedhajhdlcegeplioahd', '4.1.28', '1e94a15dfaa59afd8ceb8b8cace7194aea3cc718d9a77fcff812eac918246e80']
+]

test/extensions.js

@@ -0,0 +1,99 @@
+var tap = require('tap')
+
+var {getRequestedExtensions, getExtensionsWithUpdates} = require('../dist/controllers/extensions')
+
+const request = (appId) => (version) => `
+<?xml version="1.0" encoding="UTF-8"?>
+<request protocol="3.0" version="chrome-53.0.2785.116" prodversion="53.0.2785.116" requestid="{b4f77b70-af29-462b-a637-8a3e4be5ecd9}" lang="" updaterchannel="stable" prodchannel="stable" os="mac" arch="x64" nacl_arch="x86-64">
+  <hw physmemory="16"/>
+  <os platform="Mac OS X" version="10.11.6" arch="x86_64"/>
+  <app appid="${appId}" version="${version}" installsource="ondemand">
+    <updatecheck />
+    <ping rd="-2" ping_freshness="" />
+  </app>
+</request>`
+const onePasswordRequest = request('aomjjhallfgjeglblehebfpbcfeobpgk')
+const unknownExtensionRequest = request('this-is-a-fake-id')
+const onePasswordAndPDFJSRequest = (onePasswordVersion, pdfJSVersion) => `
+<?xml version="1.0" encoding="UTF-8"?>
+<request protocol="3.0" version="chrome-53.0.2785.116" prodversion="53.0.2785.116" requestid="{b4f77b70-af29-462b-a637-8a3e4be5ecd9}" lang="" updaterchannel="stable" prodchannel="stable" os="mac" arch="x64" nacl_arch="x86-64">
+  <hw physmemory="16"/>
+  <os platform="Mac OS X" version="10.11.6" arch="x86_64"/>
+  <app appid="aomjjhallfgjeglblehebfpbcfeobpgk" version="${onePasswordVersion}" installsource="ondemand">
+    <updatecheck />
+    <ping rd="-2" ping_freshness="" />
+  </app>
+  <app appid="oemmndcbldboiebfnladdacbdfmadadm" version="${pdfJSVersion}" installsource="ondemand">
+    <updatecheck />
+    <ping rd="-2" ping_freshness="" />
+  </app>
+</request>`
+const noUpdatesRequest = `
+<?xml version="1.0" encoding="UTF-8"?>
+<request protocol="3.0" version="chrome-53.0.2785.116" prodversion="53.0.2785.116" requestid="{b4f77b70-af29-462b-a637-8a3e4be5ecd9}" lang="" updaterchannel="stable" prodchannel="stable" os="mac" arch="x64" nacl_arch="x86-64">
+  <hw physmemory="16"/>
+  <os platform="Mac OS X" version="10.11.6" arch="x86_64"/>
+</request>`
+const unsupportedProtocolRequest = `
+<?xml version="1.0" encoding="UTF-8"?>
+<request protocol="2.0" version="chrome-53.0.2785.116" prodversion="53.0.2785.116" requestid="{b4f77b70-af29-462b-a637-8a3e4be5ecd9}" lang="" updaterchannel="stable" prodchannel="stable" os="mac" arch="x64" nacl_arch="x86-64">
+  <app appid="aomjjhallfgjeglblehebfpbcfeobpgk">
+    <updatecheck codebase="https://s3.amazonaws.com/brave-extensions/release/aomjjhallfgjeglblehebfpbcfeobpgk/extension_4_5_9_90.crx" version="4.5.9.90"/>
+  </app>
+</request>`
+
+const availableExtensions = [
+  ['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90', 'f75d7808766429ec63ec41d948c1cb6a486407945d604961c6adf54fe3f459b7'],
+  // PDFJS
+  ['oemmndcbldboiebfnladdacbdfmadadm', '1.5.294', '499e05d5cde9a1e735e29fa49af7839690f34eb27a3d952b8e4396ea50c77526'],
+  // Dashlane
+  ['fdjamakpfbbddfjaooikfcpapjohcfmg', '4.2.4', '0be29a787290db4c554fd7c77e5c45939d2161688b6cb6b51d39cdedb9cc69d4'],
+  // LastPass
+  ['hdokiejnpimakedhajhdlcegeplioahd', '4.1.28', '1e94a15dfaa59afd8ceb8b8cace7194aea3cc718d9a77fcff812eac918246e80']
+]
+
+tap.test('Extracts extension information from requests', (test) => {
+  tap.same(getRequestedExtensions(onePasswordRequest('0.0.0.0')), [['aomjjhallfgjeglblehebfpbcfeobpgk', '0.0.0.0']])
+  tap.same(getRequestedExtensions(onePasswordRequest('4.5.9.90')), [['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90']])
+  tap.same(getRequestedExtensions(onePasswordAndPDFJSRequest('4.5.9.90', '1.5.294')), [['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90'], ['oemmndcbldboiebfnladdacbdfmadadm', '1.5.294']])
+  tap.equal(getRequestedExtensions(unsupportedProtocolRequest), undefined)
+  test.end()
+})
+
+tap.test('Initial update for an extension works', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(onePasswordRequest('0.0.0.0'))),
+    [
+      ['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90', 'f75d7808766429ec63ec41d948c1cb6a486407945d604961c6adf54fe3f459b7']
+    ])
+  test.end()
+})
+
+tap.test('No updates returned for same version', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(onePasswordRequest('4.5.9.90'))), [])
+  test.end()
+})
+
+tap.test('No updates returned for unknown extension ID', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(unknownExtensionRequest('0.0.0.0'))), [])
+  test.end()
+})
+
+tap.test('No updates returned for newer extension ID', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(onePasswordRequest('9.5.9.90'))), [])
+  test.end()
+})
+
+tap.test('Blank update request returns no updates', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(noUpdatesRequest)), [])
+  test.end()
+})
+
+tap.test('Update for multiple extensions works', (test) => {
+  tap.same(getExtensionsWithUpdates(availableExtensions, getRequestedExtensions(onePasswordAndPDFJSRequest('0.0.0.0', '0.0.0.0'))),
+    [
+      ['aomjjhallfgjeglblehebfpbcfeobpgk', '4.5.9.90', 'f75d7808766429ec63ec41d948c1cb6a486407945d604961c6adf54fe3f459b7'],
+      ['oemmndcbldboiebfnladdacbdfmadadm', '1.5.294', '499e05d5cde9a1e735e29fa49af7839690f34eb27a3d952b8e4396ea50c77526']
+    ])
+  test.end()
+})
+