IFRAME Permission Denied Solution

Discussion

1. Adam R

   I’ve had to deal with this before, too.

   You’ll need to make sure that you are correctly referencing the correct context with jQuery, otherwise, from what I understand, it is working off of the parent window’s “document” object.

   Here’s a link for reference: http://thomas.bindzus.me/2007/12/24/adding-dynamic-contents-to-iframes/
2. Gregg Moore

   Thanks for tip, D!
3. Vladimir Cristian Popa

   The way I’ve dealt with this when I first made an AJAX upload, was to put a javascript function in the iframe. Since I controlled the contents of the iframe, I’ve put a small function call in the iframe, with the needed parameters:

   success = false;
   message = "The file is too large!";
   window.top.uploadFinished(success, message);
   
4. Thomas Mack

   Thanks!

   On one user’s firefox, we saw this problem starting in some point of time. Before that time or using the Internet Explorer, there was no problem. And no other user encountered such a problem ever – needless to say, I couldn’t verify the problem here.
5. Prachi

   Hi David

   I am doing cross-origin communication using postMessage. I want to access the elements within the document within the iframe using javascript. However, I get the permissions error. You said that this can be resolved by using CORS settings. Do these settings have to be applied in our iframe? or in the other environment? If you know of a resource that explains this clearly, please let me know of that.

   Thanks
   Prachi
6. Jeff

   Hi David,

   Big fan of your blog, thanks for posting this.

   I’m running into a similar issue, I’m dynamically creating the iframe and using JS to .submit() the form once the iframe load event is fired. How are you sending the custom headers? Here is a piece of my code:

   if (iframeId.addEventListener) iframeId.addEventListener("load", eventHandler, true);
   if (iframeId.attachEvent) iframeId.attachEvent("onload", eventHandler);
   
   // Set properties of form...
   form.setAttribute("target", "upload_iframe");
   form.setAttribute("action", action_url);
   form.setAttribute("method", "post");
   form.setAttribute("enctype", "multipart/form-data");
   form.setAttribute("encoding", "multipart/form-data");
   

   Let me know your thoughts, looking forward to your response.

   Thanks a lot,
   Jeff
7. David Walsh

   Where are the custom headers? If you mean like server headers, you can’t send those from a post to an Iframe :/
8. Raphael Cohen

   Just a note on this: I have noticed that you cannot set custom headers in your request when using the IFrame technique for uploading files (for IE9 and below). I ran into a webservice which required that a token be passed in the header (X-AUTH-TOKEN) when uploading a file. I have found no way of modifying the headers of multi-part upload form. I had to inform the client that he would need to change his webservice if we wanted it to work with IE9 and below.
9. Areeb

   This didn’t work for me. I’ve tried everything and the weird thing is that this ONLY happens in Firefox Android. The domain and origin are the same between the iFrame and parent and work fine everywhere else I’ve tested.

   I can even reproduce the bug by specifying to Desktop Firefox that it is running Android as the user agent and triggering the responsive template.