Exert all pac urls, be robust on errors, fix typos, add light version (broken)

extensions/chromium/runet-censorship-bypass-light/assets-sources.txt

@@ -0,0 +1 @@
+Blue Ribbon Icon: http://www.iconsdb.com/icon-sets/cardboard-blue-icons/ribbon-12-icon.html

extensions/chromium/runet-censorship-bypass-light/extension/00-init-apis.js

@@ -0,0 +1,33 @@
+'use strict';
+
+window.utils = {
+
+  areSettingsNotControlledFor(details) {
+
+    return ['controlled_by_other', 'not_controllable']
+      .some( (prefix) => details.levelOfControl.startsWith(prefix) );
+
+  },
+
+  messages: {
+
+    searchSettingsForUrl(niddle) {
+
+      return 'chrome://settings/search#' + (chrome.i18n.getMessage(niddle) || niddle);
+
+    },
+
+    whichExtensionHtml() {
+
+      return chrome.i18n.getMessage('noControl') +
+        ` <a href="${ this.searchSettingsForUrl('proxy') }">
+          ${ chrome.i18n.getMessage('which') }
+        </a>`;
+
+    },
+
+  },
+
+};
+
+window.apis = {};

extensions/chromium/runet-censorship-bypass-light/extension/12-set-pac-url.js

@@ -0,0 +1,91 @@
+'use strict';
+
+window.state = {
+  lastError: null,
+  ifNotControlled: false
+};
+
+function redBadge(msg) {
+
+  window.chrome.browserAction.setBadgeBackgroundColor({
+    color: '#db4b2f',
+  });
+  chrome.browserAction.setBadgeText({
+    text: msg,
+  });
+
+}
+
+let defaultColorPromise = new Promise( function (resolve) {
+
+  chrome.browserAction.getBadgeBackgroundColor({}, resolve);
+
+});
+
+function okBadge(msg) {
+
+  defaultColorPromise.then( function (defaultColor) {
+    window.chrome.browserAction.setBadgeBackgroundColor({
+      color: defaultColor,
+    });
+    chrome.browserAction.setBadgeText({
+      text: msg,
+    });
+  });
+
+}
+
+function checkControlFor(details) {
+
+  state.ifNotControlled = utils.areSettingsNotControlledFor(details);
+  if (state.ifNotControlled) {
+    console.warn('Failed, other extension is in control.');
+    redBadge('xCTRL');
+  } else {
+    console.log('Successfuly set PAC in proxy settings..');
+    okBadge('ok');
+  }
+
+}
+
+chrome.proxy.settings.onChange.addListener( checkControlFor );
+
+chrome.proxy.onProxyError.addListener((details) => {
+
+  console.error(details);
+      //if (window.state.ifNotControlled) {
+      //  return;
+      //}
+});
+
+chrome.proxy.settings.set(
+  {
+    value: {
+      mode: 'pac_script',
+      pacScript: {
+        /*
+          Don't use in system configs! Because Win does poor caching.
+          Url is encoded to counter abuse.
+          Source: CloudFlare
+        */
+        //url: 'https://anticensorship-russia.tk/generated-pac-scripts/on-switches-0.17.pac',
+        //url: 'https://antizapret.prostovpn.org/proxy.pac',
+        url: 'http://localhost:8080/on-switches-0.17.pac',
+        mandatory: true
+        //url: '\x68\x74\x74\x70\x73\x3a\x2f\x2f\x61\x6e\x74\x69\x63\x65\x6e\x73\x6f\x72\x73\x68\x69\x70\x2d\x72\x75\x73\x73\x69\x61\x2e\x74\x6b\x2f\x67\x65\x6e\x65\x72\x61\x74\x65\x64\x2d\x70\x61\x63\x2d\x73\x63\x72\x69\x70\x74\x73\x2f\x6f\x6e\x2d\x73\x77\x69\x74\x63\x68\x65\x73\x2d\x30\x2e\x31\x37\x2e\x70\x61\x63',
+      },
+    },
+  },
+  function() {
+
+    const err = chrome.runtime.lastError || chrome.extension.lastError;
+    if(err) {
+      alert(333)
+      redBadge('ERR');
+    } else {
+      alert(11);
+      chrome.proxy.settings.get({}, checkControlFor);
+    }
+
+  }
+);

extensions/chromium/runet-censorship-bypass-light/extension/40-context-menus.js

@@ -0,0 +1,49 @@
+'use strict';
+
+{
+
+  const createMenuLinkEntry = (title, tab2url) => chrome.contextMenus.create({
+    title: title,
+    contexts: ['browser_action'],
+    onclick:
+      (menuInfo, tab) => Promise.resolve( tab2url( tab ) )
+        .then( (url) => chrome.tabs.create({url: url}) ),
+  });
+
+  createMenuLinkEntry(
+    'Сайт доступен из-за границы? Is up?',
+    (tab) => `data:text/html;charset=utf8,<title>Запрашиваю...</title>
+            <form class='tracker-form' method='POST'
+              action='https://www.host-tracker.com/ru/InstantCheck/Create'>
+            <input name='InstantCheckUrl' value='${new URL(tab.url).hostname}'
+              type='hidden'>
+            </form>
+            <script>document.querySelector('.tracker-form').submit()<\/script>`
+  );
+
+  createMenuLinkEntry(
+    'Сайт в реестре блокировок?',
+    (tab) => 'https://antizapret.info/index.php?search=' + new URL(tab.url).hostname
+  );
+
+  createMenuLinkEntry(
+    'Из архива archive.org',
+    (tab) => 'https://web.archive.org/web/*/' + tab.url
+  );
+
+  createMenuLinkEntry(
+    'Через Google Translate',
+    (tab) => 'https://translate.google.com/translate?hl=&sl=en&tl=ru&anno=2&sandbox=1&u=' + tab.url
+  );
+
+  createMenuLinkEntry(
+    'Другие варианты разблокировки',
+    (tab) => 'https://rebrand.ly/ac-unblock#' + tab.url
+  );
+
+  createMenuLinkEntry(
+    'У меня проблемы с расширением!',
+    (tab) => 'https://rebrand.ly/ac-support'
+  );
+
+}

extensions/chromium/runet-censorship-bypass-light/extension/_locales/en/messages.json

@@ -0,0 +1,17 @@
+{
+  "extName": {
+    "message": "Light Runet Censorship Bypass"
+  },
+  "extDesc": {
+      "message": "Circumvent Russian Internet Censorship: https://rebrand.ly/ac-wiki"
+  },
+  "proxy": {
+    "message": "proxy"
+  },
+  "noControl": {
+    "message": "Other extension controls proxy!"
+  },
+  "which": {
+    "message": "Which?"
+  }
+}

extensions/chromium/runet-censorship-bypass-light/extension/_locales/ru/messages.json

@@ -0,0 +1,17 @@
+{
+  "extName": {
+    "message": "Облегчённый обход блокировок Рунета"
+  },
+  "extDesc": {
+    "message": "Обход интернет-цензуры в России: https://rebrand.ly/ac-wiki"
+  },
+  "proxy": {
+    "message": "прокси"
+  },
+  "noControl": {
+    "message": "Другое расширение контролирует настройки прокси!"
+  },
+  "which": {
+    "message": "Какое?"
+  }
+}

extensions/chromium/runet-censorship-bypass-light/extension/manifest.json

@@ -0,0 +1,39 @@
+{
+  "manifest_version": 2,
+
+  "name": "__MSG_extName__ 0.17",
+  "default_locale": "ru",
+  "description": "__MSG_extDesc__",
+  "version": "0.0.0.17",
+  "icons": {
+    "128": "/icons/default-128.png"
+	},
+  "author": "ilyaigpetrov@gmail.com",
+  "homepage_url": "https://github.com/anticensorship-russia/chromium-extension",
+
+  "permissions": [
+    "proxy",
+    "alarms",
+    "storage",
+    "<all_urls>",
+    "tabs",
+    "contextMenus",
+    "notifications"
+  ],
+
+  "background": {
+    "persistent": true,
+    "scripts": [
+      "00-init-apis.js",
+      "12-set-pac-url.js"
+    ]
+  },
+  "browser_action": {
+    "default_title": "Этот сайт благословлён 0.17",
+    "default_popup": "pages/show-state/index.html"
+  },
+  "options_ui": {
+     "page": "pages/show-state/index.html",
+     "chrome_style": true
+   }
+}

extensions/chromium/runet-censorship-bypass-light/extension/pages/show-state/index.html

@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html style="display: none">
+  <head>
+    <title>Выбор провайдера PAC</title>
+    <style>
+      footer {
+        display: block;
+        white-space: nowrap;
+        word-break: keep-all;
+      }
+      footer {
+        margin: 2em 1em 1em;
+      }
+      hr {
+        border-width: 1px 0 0 0;
+        margin: 0.6em 0;
+        padding: 0;
+      }
+      .if-not-controlled {
+        display: none;
+        color: red;
+      }
+    </style>
+  </head>
+  <body>
+    <header>
+      Обход блокировок Рунета облегчённый
+    </header>
+    <span class="if-not-controlled">
+      <span id="which-extension"></span>
+      <hr style="border-color: red; border-style: solid;"/>
+    </span>
+    <span class="if-error">
+      <span id="last-error"></span>
+      <hr style="border-color: red; border-style: solid;"/>
+    </span>
+    <hr/>
+    <footer>
+      <input type="button" value="Готово" class="close-button">&nbsp;<a href="../debug/index.html" style="text-decoration: none; margin-left: 1em;">Полная версия расширения</a>
+    </footer>
+    <script src="./index.js"></script>
+  </body>
+</html>

extensions/chromium/runet-censorship-bypass-light/extension/pages/show-state/index.js

@@ -0,0 +1,33 @@
+'use strict';
+
+chrome.runtime.getBackgroundPage( (backgroundPage) => {
+
+  const state = backgroundPage.state;
+
+  if( state.ifNotControlled ) {
+    document.getElementById('which-extension').innerHTML
+      = backgroundPage.utils.messages.whichExtensionHtml();
+    document.querySelectorAll('.if-not-controlled').forEach( (node) => {
+
+      node.style.display = 'block';
+
+    });
+  }
+
+  if (state.lastError) {
+
+    document.querySelectorAll('.if-error').forEach( (node) => {
+
+      node.style.display = 'block';
+
+    });
+    document.getElementById('last-error').innerHTML = state.lastError;
+  }
+
+  document.documentElement.style.display = '';
+
+  // CLOSE BUTTON
+
+  document.querySelector('.close-button').onclick = () => window.close();
+
+});

extensions/chromium/runet-censorship-bypass/extension/11-api-error-handlers.js

@@ -217,7 +217,7 @@
 
   chrome.proxy.onProxyError.addListener((details) => {
 
-    if (handlers.ifNoControl) {
+    if (handlers.ifNotControlled) {
       return;
     }
     /*

extensions/chromium/runet-censorship-bypass/extension/12-api-sync-pac-script-with-pac-provider.js

@@ -546,6 +546,7 @@
 
   function ifModifiedSince(url, lastModified = mandatory(), cb = mandatory()) {
 
+    const nowModified = new Date(0).toUTCString();
     fetch(url, {
       method: 'HEAD',
       headers: new Headers({
@@ -553,11 +554,9 @@
       })
     }).then(
       (res) => {
-        console.log('HEAD', res);
-        window.R = res;
-        cb(null, res.status === 304 ? false : (res.headers.get('Last-Modified') || new Date(0).toUTCString()) );
+        cb(null, res.status === 304 ? false : (res.headers.get('Last-Modified') || nowModified) );
       },
-      clarifyFetchErrorThen(cb)
+      clarifyFetchErrorThen((err) => cb(err, nowModified))
     );
 
   }
@@ -709,26 +708,43 @@
         );
       }
 
-      httpGet(
-        pacUrl,
-        (err, pacData) => {
+      // Employ all urls, the latter are fallbacks for the former.
+      let pacDataPromise = Promise.reject();
+      for(const url of provider.pacUrls) {
+
+        pacDataPromise = pacDataPromise.catch(
+          (err) => new Promise(
+            (resolve, reject) => httpGet(
+              url,
+              (newErr, pacData) => newErr ? reject(newErr) : resolve(pacData)
+            )
+          )
+        );
+
+      }
+
+      pacDataPromise.then(
+        (pacData) => {
 
-          if (err) {
-            err.clarification = {
-              message: 'Не удалось скачать PAC-скрипт с адреса: '
-                + provider.pacUrl + '.',
-              prev: err.clarification,
-            };
-            return cb(err);
-          }
           setPacAsync(
             {pacData, pacUrl},
             (err, res) => cb( err, Object.assign(res || {}, {lastModified: newLastModified}) )
           );
 
+        },
+        (err) => {
+
+          err.clarification = {
+            message: 'Не удалось скачать PAC-скрипт с адресов: [ '
+              + provider.pacUrls.join(' , ') + ' ].',
+            prev: err.clarification,
+          };
+          return cb(err);
+
         }
       );
-    })
+
+    });
 
   }