Refactoring

src/drivers/webextension/css/styles.css

@@ -150,6 +150,21 @@ a:hover {
   color: var(--color-text);
 }
 
+.technology__confidence {
+  opacity: .5;
+  font-size: .7rem;
+  margin-left: .2rem;
+}
+
+.technology__version {
+  background: var(--color-secondary);
+  border-radius: 3px;
+  font-size: .7rem;
+  padding: .1rem .3rem;
+  margin-left: .4rem;
+  vertical-align: middle;
+}
+
 .terms {
   align-items: center;
   display: flex;
@@ -235,6 +250,13 @@ a:hover {
     color: #fff
   }
 
+  .theme-mode .technology__confidence {
+  }
+
+  .theme-mode .technology__version {
+    background: var(--color-primary);
+  }
+
   .theme-mode .footer {
     border-color: var(--color-secondary-dark)
   }

src/drivers/webextension/html/popup.html

@@ -55,8 +55,11 @@
 
         <a class="technology__link" href="#"></a>
 
-        <span class="technology__confidence">&nbsp;</span>
+        <span>
           <span class="technology__version">&nbsp;</span>
+        </span>
+
+        <span class="technology__confidence">&nbsp;</span>
       </div>
     </div>
 

src/drivers/webextension/js/content.js

@@ -25,6 +25,19 @@ const Content = {
 
       html = chunks.join('\n')
 
+      const language =
+        document.documentElement.getAttribute('lang') ||
+        document.documentElement.getAttribute('xml:lang') ||
+        (await new Promise((resolve) =>
+          chrome.i18n.detectLanguage(html, ({ languages }) =>
+            resolve(
+              languages
+                .filter(({ percentage }) => percentage >= 75)
+                .map(({ language: lang }) => lang)[0]
+            )
+          )
+        ))
+
       // Script tags
       const scripts = Array.from(document.scripts)
         .filter(({ src }) => src)
@@ -41,7 +54,7 @@ const Content = {
 
       Content.port.postMessage({
         func: 'onContentLoad',
-        args: [location.href, { html, scripts, meta }]
+        args: [location.href, { html, scripts, meta }, language]
       })
 
       Content.port.postMessage({ func: 'getTechnologies' })

src/drivers/webextension/js/driver.js

@@ -7,15 +7,61 @@ const {
   setCategories,
   analyze,
   analyzeManyToMany,
-  resolve,
+  resolve
-  unique
 } = Wappalyzer
-const { promisify, getOption } = Utils
+const { agent, promisify, getOption, setOption } = Utils
+
+const expiry = 1000 * 60 * 60 * 24
 
 const Driver = {
-  cache: {
+  lastPing: Date.now(),
-    hostnames: {},
+
-    robots: {}
+  async init() {
+    await Driver.loadTechnologies()
+
+    const hostnameCache = (await getOption('hostnames')) || {}
+
+    Driver.cache = {
+      hostnames: Object.keys(hostnameCache).reduce(
+        (cache, hostname) => ({
+          ...cache,
+          [hostname]: {
+            ...hostnameCache[hostname],
+            detections: hostnameCache[hostname].detections.map(
+              ({
+                pattern: { regex, confidence, version },
+                match,
+                technology: name,
+                hits
+              }) => ({
+                pattern: {
+                  regex: new RegExp(regex, 'i'),
+                  confidence,
+                  version
+                },
+                match,
+                technology: Wappalyzer.technologies.find(
+                  ({ name: _name }) => name === _name
+                ),
+                hits
+              })
+            )
+          }
+        }),
+        {}
+      ),
+      tabs: {},
+      robots: (await getOption('robots')) || {},
+      ads: (await getOption('ads')) || []
+    }
+
+    chrome.runtime.onConnect.addListener(Driver.onRuntimeConnect)
+    chrome.webRequest.onCompleted.addListener(
+      Driver.onWebRequestComplete,
+      { urls: ['http://*/*', 'https://*/*'], types: ['main_frame'] },
+      ['responseHeaders']
+    )
+    chrome.tabs.onRemoved.addListener((id) => (Driver.cache.tabs[id] = null))
   },
 
   log(message, source = 'driver', type = 'log') {
@@ -97,90 +143,6 @@ const Driver = {
         func,
         args: await Driver[func].call(port.sender, ...(args || []))
       })
-
-      /*
-      const pinnedCategory = await getOption('pinnedCategory')
-
-      const url = new URL(port.sender.tab.url)
-
-      const cookies = await browser.cookies.getAll({
-        domain: `.${url.hostname}`
-      })
-
-      let response
-
-      switch (message.id) {
-        case 'log':
-          wappalyzer.log(message.subject, message.source)
-
-          break
-        case 'analyze':
-          if (message.subject.html) {
-            browser.i18n
-              .detectLanguage(message.subject.html)
-              .then(({ languages }) => {
-                const language = languages
-                  .filter(({ percentage }) => percentage >= 75)
-                  .map(({ language: lang }) => lang)[0]
-
-                message.subject.language = language
-
-                wappalyzer.analyze(url, message.subject, {
-                  tab: port.sender.tab
-                })
-              })
-          } else {
-            wappalyzer.analyze(url, message.subject, { tab: port.sender.tab })
-          }
-
-          await setOption('hostnameCache', wappalyzer.hostnameCache)
-
-          break
-        case 'ad_log':
-          wappalyzer.cacheDetectedAds(message.subject)
-
-          break
-        case 'get_apps':
-          response = {
-            tabCache: tabCache[message.tab.id],
-            apps: wappalyzer.apps,
-            categories: wappalyzer.categories,
-            pinnedCategory,
-            termsAccepted:
-              userAgent() === 'chrome' ||
-              (await getOption('termsAccepted', false))
-          }
-
-          break
-        case 'set_option':
-          await setOption(message.key, message.value)
-
-          break
-        case 'get_js_patterns':
-          response = {
-            patterns: wappalyzer.jsPatterns
-          }
-
-          break
-        case 'update_theme_mode':
-          // Sync theme mode to popup.
-          response = {
-            themeMode: await getOption('themeMode', false)
-          }
-
-          break
-        default:
-        // Do nothing
-      }
-
-      if (response) {
-        port.postMessage({
-          id: message.id,
-          response
-        })
-      }
-    })
-    */
     })
   },
 
@@ -220,7 +182,7 @@ const Driver = {
     }
   },
 
-  async onContentLoad(href, items) {
+  async onContentLoad(href, items, language) {
     try {
       const url = new URL(href)
 
@@ -228,7 +190,7 @@ const Driver = {
         domain: `.${url.hostname}`
       })
 
-      await Driver.onDetect(url, await analyze(href, items))
+      await Driver.onDetect(url, await analyze(href, items), language)
     } catch (error) {
       Driver.error(error)
     }
@@ -238,15 +200,98 @@ const Driver = {
     return Wappalyzer.technologies
   },
 
-  async onDetect(url, detections = []) {
+  async onDetect(url, detections = [], language) {
-    Driver.cache.hostnames[url.hostname] = unique([
+    // Cache detections
-      ...(Driver.cache.hostnames[url.hostname] || []),
+    // eslint-disable-next-line standard/computed-property-even-spacing
-      ...detections
+    Driver.cache.hostnames[url.hostname] = {
-    ])
+      ...(Driver.cache.hostnames[url.hostname] || {
+        detections: []
+      }),
+      dateTime: Date.now()
+    }
+
+    Driver.cache.hostnames[url.hostname].language =
+      Driver.cache.hostnames[url.hostname].language || language
+
+    detections.forEach((detection) => {
+      const foo = Driver.cache.hostnames[url.hostname].detections
+      const {
+        technology: { name },
+        pattern: { regex }
+      } = detection
+
+      const cache = foo.find(
+        ({ technology: { name: _name }, pattern: { regex: _regex } }) =>
+          name === _name && (!regex || regex) === _regex
+      )
+
+      if (cache) {
+        cache.hits += 1
+      } else {
+        foo.push({
+          ...detection,
+          hits: 1
+        })
+      }
+    })
+
+    // Expire cache
+    Driver.cache.hostnames = Object.keys(Driver.cache.hostnames).reduce(
+      (hostnames, hostname) => {
+        const cache = Driver.cache.hostnames[hostname]
+
+        if (cache.dateTime > Date.now() - expiry) {
+          hostnames[hostname] = cache
+        }
+
+        return hostnames
+      },
+      {}
+    )
+
+    await setOption(
+      'hostnames',
+      Object.keys(Driver.cache.hostnames).reduce(
+        (cache, hostname) => ({
+          ...cache,
+          [hostname]: {
+            ...Driver.cache.hostnames[hostname],
+            detections: Driver.cache.hostnames[hostname].detections.map(
+              ({
+                pattern: { regex, confidence, version },
+                match,
+                technology: { name: technology }
+              }) => ({
+                technology,
+                pattern: {
+                  regex: regex.source,
+                  confidence,
+                  version
+                },
+                match
+              })
+            )
+          }
+        }),
+        {}
+      )
+    )
 
-    const resolved = resolve(Driver.cache.hostnames[url.hostname])
+    const resolved = resolve(Driver.cache.hostnames[url.hostname].detections)
 
     await Driver.setIcon(url, resolved)
+
+    const tabs = await promisify(chrome.tabs, 'query', { url: [url.href] })
+
+    tabs.forEach(({ id }) => (Driver.cache.tabs[id] = resolved))
+
+    await Driver.ping()
+  },
+
+  async onAd(ad) {
+    Driver.cache.ads.push(ad)
+
+    await setOption('ads', Driver.cache.ads)
   },
 
   async setIcon(url, technologies) {
@@ -292,24 +337,152 @@ const Driver = {
   },
 
   async getDetections() {
-    const [{ url: href }] = await promisify(chrome.tabs, 'query', {
+    const [{ id }] = await promisify(chrome.tabs, 'query', {
       active: true,
       currentWindow: true
     })
 
+    return Driver.cache.tabs[id]
+  },
+
+  async getRobots(hostname, secure = false) {
+    if (!(await getOption('tracking', true))) {
+      return
+    }
+
+    if (typeof Driver.cache.robots[hostname] !== 'undefined') {
+      return Driver.cache.robots[hostname]
+    }
+
+    try {
+      Driver.cache.robots[hostname] = await Promise.race([
+        new Promise(async (resolve) => {
+          const response = await fetch(
+            `http${secure ? 's' : ''}://${hostname}/robots.txt`,
+            {
+              redirect: 'follow',
+              mode: 'no-cors'
+            }
+          )
+
+          if (!response.ok) {
+            Driver.error(new Error(response.statusText))
+
+            resolve('')
+          }
+
+          let agent
+
+          resolve(
+            (await response.text()).split('\n').reduce((disallows, line) => {
+              let matches = /^User-agent:\s*(.+)$/i.exec(line.trim())
+
+              if (matches) {
+                agent = matches[1].toLowerCase()
+              } else if (agent === '*' || agent === 'wappalyzer') {
+                matches = /^Disallow:\s*(.+)$/i.exec(line.trim())
+
+                if (matches) {
+                  disallows.push(matches[1])
+                }
+              }
+
+              return disallows
+            }, [])
+          )
+        }),
+        new Promise((resolve) => setTimeout(() => resolve(''), 5000))
+      ])
+
+      Driver.cache.robots = Object.keys(Driver.cache.robots)
+        .slice(-50)
+        .reduce(
+          (cache, hostname) => ({
+            ...cache,
+            [hostname]: Driver.cache.robots[hostname]
+          }),
+          {}
+        )
+
+      await setOption('robots', Driver.cache.robots)
+
+      return Driver.cache.robots[hostname]
+    } catch (error) {
+      Driver.error(error)
+    }
+  },
+
+  async checkRobots(href) {
     const url = new URL(href)
 
-    return resolve(Driver.cache.hostnames[url.hostname])
+    if (url.protocol !== 'http:' && url.protocol !== 'https:') {
+      throw new Error('Invalid protocol')
     }
+
+    const robots = await Driver.getRobots(
+      url.hostname,
+      url.protocol === 'https:'
+    )
+
+    if (robots.some((disallowed) => url.pathname.indexOf(disallowed) === 0)) {
+      throw new Error('Disallowed')
     }
+  },
 
-;(async function() {
+  async ping() {
-  await Driver.loadTechnologies()
+    const tracking = await getOption('tracking', true)
+    const termsAccepted =
+      agent === 'chrome' || (await getOption('termsAccepted', false))
 
-  chrome.runtime.onConnect.addListener(Driver.onRuntimeConnect)
+    if (tracking && termsAccepted) {
-  chrome.webRequest.onCompleted.addListener(
+      const count = Object.keys(Driver.cache.hostnames).length
-    Driver.onWebRequestComplete,
+
-    { urls: ['http://*/*', 'https://*/*'], types: ['main_frame'] },
+      if (count && (count >= 50 || Driver.lastPing < Date.now() - 5000)) {
-    ['responseHeaders']
+        await Driver.post(
+          'https://api.wappalyzer.com/ping/v1/',
+          Object.keys(Driver.cache.hostnames).reduce((hostnames, hostname) => {
+            const { language, detections } = Driver.cache.hostnames[hostname]
+
+            hostnames[hostname] = hostnames[hostname] || {
+              applications: {},
+              meta: {
+                language
+              }
+            }
+
+            resolve(detections).forEach(({ name, confidence, version }) => {
+              if (confidence === 100) {
+                console.log(
+                  name,
+                  detections.find(
+                    ({ technology: { name: _name } }) => name === _name
+                  )
                 )
-})()
+                hostnames[hostname].applications[name] = {
+                  version,
+                  hits: detections.find(
+                    ({ technology: { name: _name } }) => name === _name
+                  ).pattern.hits
+                }
+              }
+            })
+
+            return hostnames
+          }, {})
+        )
+
+        await setOption('hostnames', (Driver.cache.hostnames = {}))
+
+        Driver.lastPing = Date.now()
+      }
+
+      if (Driver.cache.ads.length > 50) {
+        await Driver.post('https://ad.wappalyzer.com/log/wp/', Driver.cache.ads)
+
+        await setOption('ads', (Driver.cache.ads = []))
+      }
+    }
+  }
+}
+
+Driver.init()

src/drivers/webextension/js/lib/iframe.js

@@ -120,8 +120,8 @@ var exports = {};
 			return dict;
 		},
 		sendToBackground: function(message, event, responseMessage) {
-			if ( typeof browser !== 'undefined' || typeof chrome !== 'undefined' ) {
+			if ( typeof chrome !== 'undefined' ) {
-        var port = browser.runtime.connect({name:"adparser"});
+        var port = chrome.runtime.connect({name:"adparser"});
 
         port.onMessage.addListener((message) => {
           if ( message && message.tracking_enabled ) {
@@ -1088,8 +1088,8 @@ var exports = {};
 	}
 
 	function addBackgroundListener(event, callback) {
-		if ( typeof browser !== 'undefined' || typeof chrome !== 'undefined' ) {
+		if ( typeof chrome !== 'undefined' ) {
-			browser.runtime.onMessage.addListener(function(msg) {
+			chrome.runtime.onMessage.addListener(function(msg) {
 				if ( msg.event === event ) {
 					callback(msg);
 				}
@@ -1111,6 +1111,7 @@ var exports = {};
 
 			if ( origUrl.indexOf('google.com/_/chrome/newtab') === -1 ) {
 				var onBlockedRobotsMessage = function() {
+          return // TODO
 					var log;
 					log = _logGen.log('invalid-robotstxt', []);
 					log.doc.finalPageUrl = log.doc.url;
@@ -1173,7 +1174,7 @@ if ( exports.utils.SCRIPT_IN_WINDOW_TOP ) {
 })(window);
 (function(adparser, pageUrl) {
 	function onAdFound(log) {
-		adparser.sendToBackground({ id: 'ad_log', subject: log }, 'ad_log', '', function(){});
+		adparser.sendToBackground({ func: 'onAd', args: [log] }, 'onAd', '', function(){});
 	}
 
 	if (  adparser && adparser.inWindowTop  ) {

src/drivers/webextension/js/lib/jsontodom.js

@@ -1,63 +0,0 @@
-jsonToDOM.namespaces = {
-  html: 'http://www.w3.org/1999/xhtml',
-  xul: 'http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul',
-};
-
-jsonToDOM.defaultNamespace = jsonToDOM.namespaces.html;
-
-function jsonToDOM(jsonTemplate, doc, nodes) {
-  function namespace(name) {
-    const reElemNameParts = /^(?:(.*):)?(.*)$/.exec(name);
-    return { namespace: jsonToDOM.namespaces[reElemNameParts[1]], shortName: reElemNameParts[2] };
-  }
-
-  // Note that 'elemNameOrArray' is: either the full element name (eg. [html:]div) or an array of elements in JSON notation
-  function tag(elemNameOrArray, elemAttr) {
-    // Array of elements?  Parse each one...
-    if (Array.isArray(elemNameOrArray)) {
-      const frag = doc.createDocumentFragment();
-      Array.prototype.forEach.call(arguments, (thisElem) => {
-        frag.appendChild(tag(...thisElem));
-      });
-      return frag;
-    }
-
-    // Single element? Parse element namespace prefix (if none exists, default to defaultNamespace), and create element
-    const elemNs = namespace(elemNameOrArray);
-    const elem = doc.createElementNS(elemNs.namespace || jsonToDOM.defaultNamespace, elemNs.shortName);
-
-    // Set element's attributes and/or callback functions (eg. onclick)
-    for (const key in elemAttr) {
-      const val = elemAttr[key];
-      if (nodes && key == 'key') {
-        nodes[val] = elem;
-        continue;
-      }
-
-      const attrNs = namespace(key);
-      if (typeof val === 'function') {
-        // Special case for function attributes; don't just add them as 'on...' attributes, but as events, using addEventListener
-        elem.addEventListener(key.replace(/^on/, ''), val, false);
-      } else {
-        // Note that the default namespace for XML attributes is, and should be, blank (ie. they're not in any namespace)
-        elem.setAttributeNS(attrNs.namespace || '', attrNs.shortName, val);
-      }
-    }
-
-    // Create and append this element's children
-    const childElems = Array.prototype.slice.call(arguments, 2);
-    childElems.forEach((childElem) => {
-      if (childElem != null) {
-        elem.appendChild(
-          childElem instanceof doc.defaultView.Node ? childElem
-            : Array.isArray(childElem) ? tag(...childElem)
-              : doc.createTextNode(childElem),
-        );
-      }
-    });
-
-    return elem;
-  }
-
-  return tag(...jsonTemplate);
-}

src/drivers/webextension/js/lib/network.js

@@ -1,19 +1,6 @@
-(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
 'use strict';
-(function() {
-
-	function isChrome() {
-		return (typeof chrome !== 'undefined' &&
-				window.navigator.userAgent.match(/Chrom(?:e|ium)\/([0-9\.]+)/));
-	}
-
-	var requiredBrowserApis = [
-		browser.webNavigation,
-		browser.tabs,
-		browser.webRequest,
-		browser.runtime
-	];
 
+(function() {
 	var MIN_FF_MAJOR_VERSION = 51;
 
 	var areListenersRegistered = false;
@@ -61,7 +48,7 @@
 		'washingtonpost.com'
 	];
 
-	var robotsTxtAllows = wappalyzer.robotsTxtAllows.bind(wappalyzer);
+	var robotsTxtAllows = Driver.checkRobots;
 	if ( !String.prototype.endsWith ) {
 		String.prototype.endsWith = function(searchString, position) {
 			var subjectString = this.toString();
@@ -76,34 +63,7 @@
 	}
 
 	function getFrame(getFrameDetails, callback) {
-		var gettingFrame = browser.webNavigation.getFrame(getFrameDetails);
+		chrome.webNavigation.getFrame(getFrameDetails, callback);
-		gettingFrame.then(callback);
-	}
-
-	function ifBrowserValid(callback, elseCallback) {
-		if ( isChrome() ) {
-
-			callback();
-		} else if ( typeof browser !== 'undefined' ) {
-			try {
-				var gettingInfo = browser.runtime.getBrowserInfo();
-				gettingInfo.then(function(browserInfo) {
-					var browserVersion = parseInt(browserInfo.version.split('.')[0]);
-
-					if ( browserInfo.name === 'Firefox' &&
-						browserVersion >= MIN_FF_MAJOR_VERSION) {
-						callback();
-					} else {
-						elseCallback();
-					}
-				});
-			} catch (err) {
-
-				elseCallback();
-			}
-		} else {
-			elseCallback();
-		}
 	}
 
 	function ifTrackingEnabled(details, ifCallback, elseCallback) {
@@ -112,24 +72,19 @@
 			allowedByRobotsTxt(details, ifCallback, elseCallback);
 		};
 
-		browser.storage.local.get('tracking').then(function(item) {
+		Utils.getOption('tracking', true).then(function(tracking) {
-
+      if ( tracking ) {
-			if ( item.hasOwnProperty('tracking') ) {
-				if ( item.tracking ) {
         fullIfCallback();
       } else {
         elseCallback();
       }
-			} else {
-				fullIfCallback();
-			}
 		});
 
 	}
 
 	function allowedByRobotsTxt(details, ifCallback, elseCallback) {
 		if (  details.url && !details.url.startsWith('chrome://')  ) {
-			robotsTxtAllows(details.url).then(ifCallback, elseCallback);
+      Driver.checkRobots(details.url, details.url.startsWith('https:')).then(ifCallback).catch(elseCallback);
 		} else {
 			elseCallback();
 		}
@@ -268,7 +223,7 @@
 	PageNetworkTrafficCollector.prototype.sendLogMessageToTabConsole = function() {
 		var logMessage = Array.from(arguments).join(' ');
 		var message = {message: logMessage, event: 'console-log-message'};
-		browser.tabs.sendMessage(this.tabId, message);
+		chrome.tabs.sendMessage(this.tabId, message);
 	};
 
 	PageNetworkTrafficCollector.prototype.sendToTab = function(assetReq, reqs, curPageUrl, adTrackingEvent) {
@@ -298,7 +253,7 @@
 		msg.origUrl = curPageUrl;
 		msg.displayAdFound = this.displayAdFound;
 
-		browser.tabs.sendMessage(this.tabId, msg);
+		chrome.tabs.sendMessage(this.tabId, msg);
 	};
 
 	PageNetworkTrafficCollector.prototype.getRedirKey = function(url, frameId) {
@@ -615,7 +570,7 @@
 		var _this = this,
 			origPageUrl, msgAssetReq;
 		msgAssetReq = this.msgsBeingSent[msgKey];
-		browser.tabs.get(this.tabId).then(function(tab) {
+		chrome.tabs.get(this.tabId, function(tab) {
 			origPageUrl = tab.url;
 		});
 
@@ -697,83 +652,74 @@
 
 	function registerListeners() {
 
-		browser.webRequest.onBeforeRequest.addListener(
+		chrome.webRequest.onBeforeRequest.addListener(
 			onBeforeRequestListener,
 			{urls: ['http://*/*', 'https://*/*']},
 			[]
 		);
 
-		browser.webRequest.onSendHeaders.addListener(
+		chrome.webRequest.onSendHeaders.addListener(
 			onSendHeadersListener,
 			{urls: ['http://*/*', 'https://*/*']},
 			['requestHeaders']
 		);
 
-		browser.webRequest.onHeadersReceived.addListener(
+		chrome.webRequest.onHeadersReceived.addListener(
 			onHeadersReceivedListener,
 			{urls: ['http://*/*', 'https://*/*']},
 			['responseHeaders']
 		);
 
-		browser.webRequest.onBeforeRedirect.addListener(
+		chrome.webRequest.onBeforeRedirect.addListener(
 			onBeforeRedirectListener,
 			{urls: ['http://*/*', 'https://*/*']},
 			[]
 		);
 
-		browser.webRequest.onResponseStarted.addListener(
+		chrome.webRequest.onResponseStarted.addListener(
 			onResponseStartedListener,
 			{urls: ['http://*/*', 'https://*/*']},
 			['responseHeaders']
 		);
 
-		browser.webNavigation.onCommitted.addListener(onCommittedListener);
+		chrome.webNavigation.onCommitted.addListener(onCommittedListener);
-		browser.webNavigation.onCompleted.addListener(onCompletedListener);
+		chrome.webNavigation.onCompleted.addListener(onCompletedListener);
-		browser.tabs.onRemoved.addListener(onRemovedListener);
+		chrome.tabs.onRemoved.addListener(onRemovedListener);
-		browser.runtime.onMessage.addListener(onMessageListener);
+		chrome.runtime.onMessage.addListener(onMessageListener);
 
 		areListenersRegistered = true;
 	}
 
 	function unregisterListeners() {
 
-		browser.webRequest.onBeforeRequest.removeListener(
+		chrome.webRequest.onBeforeRequest.removeListener(
 			onBeforeRequestListener
 		);
 
-		browser.webRequest.onSendHeaders.removeListener(
+		chrome.webRequest.onSendHeaders.removeListener(
 			onSendHeadersListener
 		);
 
-		browser.webRequest.onHeadersReceived.removeListener(
+		chrome.webRequest.onHeadersReceived.removeListener(
 			onHeadersReceivedListener
 		);
 
-		browser.webRequest.onBeforeRedirect.removeListener(
+		chrome.webRequest.onBeforeRedirect.removeListener(
 			onBeforeRedirectListener
 		);
 
-		browser.webRequest.onResponseStarted.removeListener(
+		chrome.webRequest.onResponseStarted.removeListener(
 			onResponseStartedListener
 		);
 
-		browser.webNavigation.onCommitted.removeListener(onCommittedListener);
+		chrome.webNavigation.onCommitted.removeListener(onCommittedListener);
-		browser.webNavigation.onCompleted.removeListener(onCompletedListener);
+		chrome.webNavigation.onCompleted.removeListener(onCompletedListener);
-		browser.tabs.onRemoved.removeListener(onRemovedListener);
+		chrome.tabs.onRemoved.removeListener(onRemovedListener);
-		browser.runtime.onMessage.removeListener(onMessageListener);
+		chrome.runtime.onMessage.removeListener(onMessageListener);
 		areListenersRegistered = false;
 	}
 
-	function areRequiredBrowserApisAvailable() {
+  chrome.webNavigation.onBeforeNavigate.addListener(
-		return requiredBrowserApis.every(function(api) {
-			return typeof api !== 'undefined';
-		});
-	}
-
-	if ( areRequiredBrowserApisAvailable() ) {
-			ifBrowserValid(
-				function() {
-					browser.webNavigation.onBeforeNavigate.addListener(
     function(details) {
       if ( details.frameId === 0 ) {
         globalPageContainer.onNewNavigation(details);
@@ -783,24 +729,8 @@
       url: [{urlMatches: 'http://*/*'}, {urlMatches: 'https://*/*'}]
     }
   );
-				}, function() {
-
-				}
-			);
-	}
-
-	browser.runtime.onConnect.addListener((port) => {
-		port.onMessage.addListener((message) => {
-			if ( message === 'is_browser_valid' ) {
-				ifBrowserValid(
-					port.postMessage({'browser_valid': true}),
-					port.postMessage({'browser_valid': false})
-				);
-			}
-		});
-	});
 
-	browser.runtime.onConnect.addListener((port) => {
+	chrome.runtime.onConnect.addListener((port) => {
 		port.onMessage.addListener((message) => {
 			if ( message === 'is_tracking_enabled' ) {
 				ifTrackingEnabled(
@@ -816,7 +746,4 @@
 			return true;
 		});
 	});
-
 })();
-
-},{}]},{},[1]);

src/drivers/webextension/js/popup.js

@@ -122,7 +122,9 @@ const Popup = {
           })
         )
 
-        technologies.forEach(({ name, slug, icon, website }) => {
+        technologies
+          .filter(({ confidence }) => confidence)
+          .forEach(({ name, slug, confidence, version, icon, website }) => {
             const technologyNode = Popup.templates.technology.cloneNode(true)
 
             const image = technologyNode.querySelector('.technology__icon')
@@ -134,6 +136,26 @@ const Popup = {
             link.href = `https://www.wappalyzer.com/technologies/${categorySlug}/${slug}`
             link.textContent = name
 
+            const confidenceNode = technologyNode.querySelector(
+              '.technology__confidence'
+            )
+
+            if (confidence < 100) {
+              confidenceNode.textContent = `${confidence}% sure`
+            } else {
+              confidenceNode.remove()
+            }
+
+            const versionNode = technologyNode.querySelector(
+              '.technology__version'
+            )
+
+            if (version) {
+              versionNode.textContent = version
+            } else {
+              versionNode.remove()
+            }
+
             categoryNode
               .querySelector('.technologies')
               .appendChild(technologyNode)