CKEditor 4
Fri, 10/05/2012 - 16:17
#1
synchro
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Joined: 10/12/2007
Posts: 64

XML error in Firefox & Chrome

I'm running CKFinder 2.3 (with a license) with PHP 5.3.2 on Ubuntu Lucid and I'm getting an XML error on load. I would normally suspect a server-side problem, but it works in some browsers but not others. It works fine in Safari (Mac & Win), IE, and Opera, but Chrome (22) and Firefox (15) give an error when loading the top level folder (the default view), and occasionally (but not always) when fetching the folder list:

It was not possible to load the XML response from the web server. The server returned an empty response.
XML Parsing Error: no element found Location: https://www.example.net/ckfinder/ckfinder.html?action=js&func=ShowFileInfo&dts=1&id=ckf1 Line Number 1, Column 1

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Fri, 10/05/2012 - 16:29
synchro
synchro's picture
Joined: 10/12/2007
Posts: 64

Re: XML error in Firefox & Chrome

One other thing I've noticed: the XML requests are cached, and once it's returned an empty result, it stays broken until the cache is cleared.
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Sat, 10/06/2012 - 18:13
synchro
synchro's picture
Joined: 10/12/2007
Posts: 64

Re: XML error in Firefox & Chrome

Well I can see the error because it sticks a big dialog box in the middle of the page!

I have a feeling you're answering some other question?
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Sat, 10/06/2012 - 19:26
alfonsoml
alfonsoml's picture
Joined: 31/12/2006
Posts: 3737

Re: XML error in Firefox & Chrome

I have the feeling that he's just a spammer and that he will edit later that post to add some links (and he will banned).

With regards to your original question, I haven't seen such problem.
In this case I would start debugging with Fiddler to check if there's a difference between the data sent by each browser and how messing with those differences affect the response by the server.
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Mon, 10/08/2012 - 17:57
lila
lila's picture
Joined: 26/07/2011
Posts: 10

Re: XML error in Firefox & Chrome

I have experienced the same problem in firefox both on Windows and mac OS, chrome works just fine thought.
I have installed 2.3 but did not fixed it..
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Wed, 10/24/2012 - 17:27
wiktor
wiktor's picture
Joined: 16/07/2007
Posts: 1641

Re: XML error in Firefox & Chrome

Any chance to see this bug live somewhere?
In case of a blank page always turn on error reporting and display errors (unless you're on a production site and can't do this).
The blank page/response suggest a PHP error and without knowing what is the problem, it's hard to suggest the solution.

You may try enabling error reporting and display_errors in ckfinder/core/connector/php/connector.php

Wiktor Walc
CTO, CKSource - http://cksource.com
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Wed, 10/24/2012 - 17:46
synchro
synchro's picture
Joined: 10/12/2007
Posts: 64

Re: XML error in Firefox & Chrome

I'm really not sure what was behind this, but I was getting some extremely strange errors logged in that particular server's logs, such as:

2012-10-18 09:36:32 is_dir(): A session is active. You cannot change the session module's ini settings at this time
#0 MyErrorHandler->ERROR_HANDLER
#1 is_dir line 71
#2 CKFinder_Connector_CommandHandler_GetFiles->buildXml line 82
#3 CKFinder_Connector_CommandHandler_XmlCommandHandlerBase->sendResponse line 100
#4 CKFinder_Connector_Core_Connector->executeCommand line 101
(error type 2 in /var/www/mysite/ckfinder/core/connector/php/php5/CommandHandler/GetFiles.php on line 71)
2012-10-18 09:36:32 is_dir(): A session is active. You cannot change the session module's ini settings at this time (error type 2 in /var/www/mysite/ckfinder/core/connector/php/php5/CommandHandler/GetFiles.php on line 71)

That is a truly weird error - is_dir is an internal PHP function that has nothing to do with sessions (and I don't have my own implementation lurking somewhere)! I had a similar error from rmdir too.

It's difficult to get into the right context to debug (with XDebug in PHPStorm) the CKFinder XHRs, though I eventually managed it by extracting the URLs with the web inspector and running them in the same browser session; I didn't manage to come to any useful conclusion though. I can only conclude that there's something wrong with PHP on that server.

The same code running on a different server does not have the same problems with CKFinder, so I've switched to that and I'm going to ignore it now.
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