MM-12800 Remove partial ability to use file:// links

src/browser/components/MattermostView.jsx

@@ -22,25 +22,6 @@ const preloadJS = `file://${remote.app.getAppPath()}/browser/webview/mattermost_
 const ERR_NOT_IMPLEMENTED = -11;
 const U2F_EXTENSION_URL = 'chrome-extension://kmendfapggjehodndflmmgagdbamhnfd/u2f-comms.html';
 
-function extractFileURL(message) {
-  const matched = message.match(/Not allowed to load local resource:\s*(.+)/);
-  if (matched) {
-    return matched[1];
-  }
-  return '';
-}
-
-function isNetworkDrive(fileURL) {
-  const u = url.parse(fileURL);
-  if (u.protocol === 'file:' && u.host) {
-    // Disallow localhost, 127.0.0.1, ::1.
-    if (!u.host.match(/^localhost$|^127\.0\.0\.1$|^\[::1\]$/)) {
-      return true;
-    }
-  }
-  return false;
-}
-
 export default class MattermostView extends React.Component {
   constructor(props) {
     super(props);
@@ -191,19 +172,9 @@ export default class MattermostView extends React.Component {
       case 1:
         console.warn(message);
         break;
-      case 2: {
-        const fileURL = extractFileURL(e.message);
-        if (isNetworkDrive(fileURL)) {
-          // Network drive: Should be allowed.
-          if (!shell.openExternal(decodeURI(fileURL))) {
-            console.log(`[${this.props.name}] shell.openExternal failed: ${fileURL}`);
-          }
-        } else {
-          // Local drive such as 'C:\Windows': Should not be allowed.
-          console.error(message);
-        }
+      case 2:
+        console.error(message);
         break;
-      }
       default:
         console.log(message);
         break;