Replace player patching with JSON.parse() hook 🖖🖖🖖

dannvix · Apr 25, 2020 · 9bd3db3 · 9bd3db3
1 parent cc60f5b
commit 9bd3db3
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Showing 4 changed files with 18 additions and 468 deletions.
diff --git a/src/background.js b/src/background.js
@@ -1,17 +1,6 @@
 const kDefaultSettings = require('./default-settings');
 
 
-chrome.webRequest.onBeforeRequest.addListener(details => {
-  console.log(`Denying: ${details.url}`);
-  return { cancel: true, };
-},
-{
-  urls: ['https://assets.nflxext.com/*cadmium-playercore*'],
-  types: ['script'],
-},
-['blocking']);
-
-
 ////////////////////////////////////////////////////////////////////////////////
 
 

diff --git a/src/content.js b/src/content.js
@@ -1,9 +1,4 @@
-const acorn = require('acorn');
 const console = require('./console');
-const { patch } = require('./nflx-player-patch');
-
-
-////////////////////////////////////////////////////////////////////////////////
 
 
 // updated when we got `<script src...>` in the observer
@@ -33,108 +28,8 @@ window.addEventListener('load', () => {
 ////////////////////////////////////////////////////////////////////////////////
 
 
-function mutateUrl(url) {
-  const u = new URL(url);
-  const doubleSlashPath = u.pathname.replace(/\//g, '//');
-  const encodedPath = doubleSlashPath.replace('-', '%2d');
-  const port = (uu.port || (/https:/i.test(u.protocol) ? ':443' : ':80'));
-  const mutatedUrl = `${u.protocol}\/\/:@${u.host}${port}${encodedPath}#`;
-  return mutatedUrl;
-}
-
-
-const observer = new MutationObserver(mutations => {
-  mutations.forEach(mutation => {
-    mutation.addedNodes.forEach(node => {
-      if (node.nodeName.toLowerCase() !== 'script') return;
-      if (node.id !== 'player-core-js') return;
-
-      const playerNode = node;
-      let playerUrl = playerNode.getAttribute('src');
-      playerNode.removeAttribute('src');
-      console.log(`Intercepted: ${playerUrl}`);
-
-      // URL looks like "https://assets.nflxext.com/en_us/ffe/player/html/cadmium-playercore-5.0008.727.011.js"
-      origPlayerUrl = playerUrl;
-      let match = /playercore-(\d+\.\d+\.\d+\.\d+)\.js/.exec(origPlayerUrl);
-      if (match) {
-        origPlayerVersion = match[1];
-      }
-
-      const _patchCodeAndLoad = (playerScript) => {
-        const patched = patch(playerScript);
-        const blob = new Blob([patched], { type: 'text/javascript' });
-
-        if (BROWSER === 'chrome') {
-          playerNode.setAttribute('src', URL.createObjectURL(blob));
-          playerNode.addEventListener('load', () => {
-            URL.revokeObjectURL(playerNode.getAttribute('src'));
-          });
-        }
-        else if (BROWSER === 'firefox') {
-          // replacing "src" does not trigger execution in Firefox,
-          // thus we need to replace the <script> node;
-          // fortunately, Netflix player page works well with the replacement
-          const newPlayer = document.createElement('script');
-          newPlayer.setAttribute('id', playerNode.getAttribute('id'));
-          newPlayer.setAttribute('src', URL.createObjectURL(blob));
-          newPlayer.addEventListener('load', () => {
-            URL.revokeObjectURL(newPlayer.getAttribute('src'));
-          });
-          playerNode.replaceWith(newPlayer);
-        }
-      };
-
-      // fetch original player code, and patch it!
-      fetch(playerUrl).then(r => r.text()).then(body => {
-        if ((typeof origPlayerVersion === 'string') &&
-            (body.indexOf(origPlayerVersion) < 0))
-        {
-          // trying to bypass other extensinos :-)
-          // they intercept the request and reply with a local patched code (likely out-dated)
-          console.warn("Warning: the player might be tempered by others -- let's bypass them ^_<");
-
-          const mutatedUrl = mutateUrl(playerUrl);
-          fetch(mutatedUrl).then(r => r.text()).then(body2 => {
-            if (body2.indexOf(origPlayerVersion) < 0) {
-              console.warn('Warning: still got a outdated player, fine :-(');
-              _patchCodeAndLoad(body); // body2 may be more corrupt
-            }
-            else {
-              console.log('Success: got the latest official player, hehe!');
-              _patchCodeAndLoad(body2);
-            }
-          });
-        }
-        else {
-          _patchCodeAndLoad(body);
-        }
-      });
-
-      observer.disconnect();
-
-      // FYI to users who open the developer console
-      if (BROWSER === 'chrome') {
-        console.log(`FYI: "net::ERR_BLOCKED_BY_CLIENT" error is intented`,
-          `(for player code patching)`);
-      }
-      else if (BROWSER === 'firefox') {
-        console.log(`FYI: "Loading failed for the <script>" error is intented`,
-          `(for player code patching)`);
-      }
-    });
-  });
-});
-const options = { subtree: true, childList: true, };
-observer.observe(document, options);
-
-
-////////////////////////////////////////////////////////////////////////////////
-
-
 // Firefox: the target website (our injected agent) cannot connect to extensions
 // directly, thus we need to relay the connection in this content script.
-
 let gMsgPort;
 window.addEventListener('message', evt => {
   if (!evt.data || evt.data.namespace !== 'nflxmultisubs') return;