Ignore unrelated postMessage payloads

webssh/static/js/main.js

@@ -1062,22 +1062,57 @@ jQuery(function($){
   });
 
 
+  function is_connect_options(data) {
+    return data && typeof data === 'object' && !Array.isArray(data) && (
+      data.hostname ||
+      data.port ||
+      data.username ||
+      data.password ||
+      data.privatekey ||
+      data.passphrase ||
+      data.totp ||
+      data.url
+    );
+  }
+
+
+  function parse_connect_message(data) {
+    var args;
+
+    if (typeof data === 'string') {
+      try {
+        args = JSON.parse(data);
+      } catch (e) {
+        args = data.split('|');
+      }
+    } else {
+      args = data;
+    }
+
+    if (Array.isArray(args) || typeof args === 'string') {
+      return args;
+    }
+
+    if (is_connect_options(args)) {
+      return args;
+    }
+  }
+
+
   function cross_origin_connect(event)
   {
-    console.log(event.origin);
     var prop = 'connect',
-        args;
+        args = parse_connect_message(event.data);
 
-    try {
-      args = JSON.parse(event.data);
-    } catch (SyntaxError) {
-      args = event.data.split('|');
+    if (args === undefined) {
+      return;
     }
 
     if (!Array.isArray(args)) {
       args = [args];
     }
 
+    console.log(event.origin);
     try {
       event_origin = event.origin;
       wssh[prop].apply(wssh, args);