tools/chrome_proxy/integration_tests/chrome_proxy_metrics.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // This file contains common utilities to find chrome proxy related elements on
   6 // a page and collect info from them.
   7
   8 (function() {
   9   var PROXY_VIEW_ID = 'proxy-view-tab-content';
  10   var PROXY_VIEW_EFFECTIVE_SETTINGS_ID = 'proxy-view-effective-settings';
  11   var PROXY_VIEW_BAD_PROXIES_ID = 'proxy-view-bad-proxies-div';
  12   var PROXY_VIEW_BAD_PROXIES_TBODY = 'proxy-view-bad-proxies-tbody';
  13   var PRXOY_SETTINGS_PREFIX = 'Proxy server for HTTP: ['
  14   var PROXY_SETTINGS_SIGNATURE = 'proxy.googlezip.net:443, ' +
  15     'compress.googlezip.net:80, direct://';
  16
  17   // Returns the effective proxy in an array from settings.
  18   // An example of the settings is:
  19   // "Proxy server for HTTP: [proxy.googlezip.net:443, " +
  20   // "compress.googlezip.net:80, direct://]"
  21   function getEffectiveProxies(doc) {
  22     var settings = doc.getElementById(PROXY_VIEW_EFFECTIVE_SETTINGS_ID);
  23     if (settings && settings.innerHTML &&
  24       settings.innerHTML.indexOf(PRXOY_SETTINGS_PREFIX) == 0) {
  25       var left = settings.innerHTML.indexOf('[');
  26       var right = settings.innerHTML.indexOf(']');
  27       if (left >= 0 && right > left) {
  28         return settings.innerHTML.substring(left + 1, right).split(/[ ,]+/);
  29       }
  30     }
  31     return [];
  32   }
  33
  34   // Returns an array of bad proxies. Each element is a bad proxy with
  35   // attribute 'proxy' as the proxy name and attribute 'retry' as the
  36   // next retry time.
  37   function getBadProxyList(doc) {
  38     var bad_proxies = doc.getElementById(PROXY_VIEW_BAD_PROXIES_ID);
  39     if (bad_proxies.hasAttribute('style') &&
  40         ('cssText' in bad_proxies.style) &&
  41         bad_proxies.style.cssText == 'display: none;') {
  42           return null;
  43         }
  44     var tbody = doc.getElementById(PROXY_VIEW_BAD_PROXIES_TBODY);
  45     results = [];
  46     for (var r = 0, n = tbody.rows.length; r < n; r++) {
  47       results[r] = {};
  48       results[r].proxy = tbody.rows[r].cells[0].innerHTML;
  49       timeSpan = tbody.rows[r].cells[1].getElementsByTagName('span')[0];
  50       if (timeSpan.hasAttribute('title') && timeSpan.title.indexOf('t=') == 0) {
  51         results[r].retry = timeSpan.title.substr(2);
  52       } else {
  53         results[r].retry = '-1';
  54       }
  55     }
  56     return results;
  57   }
  58
  59   function getChromeProxyInfo() {
  60     if (!document.getElementById(PROXY_VIEW_ID)) {
  61       return null;
  62     }
  63     info = {};
  64     info.proxies = getEffectiveProxies(document);
  65     info.enabled = (info.proxies.length > 1 &&
  66         info.proxies[info.proxies.length - 1] == 'direct://' &&
  67         info.proxies[info.proxies.length - 2] != 'direct://');
  68     info.badProxies = getBadProxyList(document);
  69     return info;
  70   };
  71   window.__getChromeProxyInfo = getChromeProxyInfo;
  72 })();