Issue 3415 - Detect application based on UA for Chromium-based browsers

chromeInfo.js.tmpl

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-require.scopes.info = {
-  addonName: {{metadata.get('general', 'basename')|json}},
-  addonVersion: {{version|json}},
+(function() {
+  var platformVersion = null;
+  var application = null;
+  var applicationVersion;
 
-  application: {{type|json}},
-  get applicationVersion()
+  var regexp = /(\S+)\/(\S+)(?:\s*\(.*?\))?/g;
+  var match;
+
+  while (match = regexp.exec(navigator.userAgent))
   {
-    {%- if type == 'opera' %}
-    var match = /\bOPR\/(\S+)/.exec(navigator.userAgent);
-    return (match ? match[1] : "0");
-    {%- else %}
-    return this.platformVersion;
-    {%- endif %}
-  },
+    var app = match[1];
+    var ver = match[2];
 
-  platform: "chromium",
-  get platformVersion()
+    if (app == "Chrome")
+    {
+      platformVersion = ver;
+    }
+    else if (app != "Mozilla" && app != "AppleWebKit" && app != "Safari")
+    {
+      // For compatibility with legacy websites, Chrome's UA
+      // also includes a Mozilla, AppleWebKit and Safari token.
+      // Any further name/version pair indicates a fork.
+      application = app == "OPR" ? "opera" : app.toLowerCase();
+      applicationVersion = ver;
+    }
+  }
+
+  // not a Chromium-based UA, probably modifed by the user
+  if (!platformVersion)
   {
-    var match = /\bChrome\/(\S+)/.exec(navigator.userAgent);
-    return (match ? match[1] : "0");
+    application = "unknown";
+    applicationVersion = platformVersion = "0";
   }
-};
+
+  // no additional name/version, so this is upstream Chrome
+  if (!application)
+  {
+    application = "chrome";
+    applicationVersion = platformVersion;
+  }
+
+  require.scopes.info = {
+    addonName: {{ metadata.get('general', 'basename')|json }},
+    addonVersion: {{ version|json }},
+
+    application: application,
+    applicationVersion: applicationVersion,
+
+    platform: "chromium",
+    platformVersion: platformVersion
+  };
+})();