Quick Start

This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.

If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.

The CheckAuthentication() function

By default, CKFinder will not work due to authentication restrictions. You must first be sure that you have configured it properly, and then enable it.

Once you have completely configured CKFinder, you are ready to enable it for use. The CheckAuthentication() function is used for that. In this function, you must implement the code that ensures that the requests are coming from an authenticated user. This is usually done by assigning a session variable when the user logs on your system.

Return "true" if the user is properly authenticated. We strongly recommend you to NOT simply return "true" from this function without implementing authentication checks. Anonymous users would be able to use CKFinder, including uploading and deleting files from your server.

The following is a sample implementation for it:

function CheckAuthentication()
    if ( structKeyExists(session, "IsAuthenticated") and session.IsAuthenticated )
        return true;

    return false;

Please read the Sessions article for more information about using session variables.


If you purchased CKFinder you should put your license key in the config.cfm file:

config.licenseName = 'put your license name here';
config.licenseKey = 'put your license key here';

If you leave this fields blank CKFinder will be fully functional but it will be ruining in demo mode.


The baseUrl is the base path used to build the final URL for the resources handled in CKFinder. Examples:

config.baseUrl = 'http://example.com/ckfinder/files/';
config.baseUrl = '/userfiles/';

If you leave this field empty the default value (/userfiles/) will be used. Notice that the trailing slash is required.


The baseDir is the path to the local directory (in the server) which points to the above baseUrl URL. This is the path used by CKFinder to handle the files in the server. Full write permissions must be granted to this directory. Examples:

You may point it to a directory directly:

config.baseDir = '/home/login/public_html/ckfinder/files/';
config.baseDir = 'C:/SiteDir/CKFinder/userfiles/';

Or you may let CKFinder discover the path, based on baseUrl:

config.baseDir = APPLICATION.CreateCFC("Utils.FileSystem").resolveUrl(config.baseUrl);

Remember that CKFinder will only discover the path when the base url is a local web path ( relative to document root ).

config.baseUrl = '/userfiles/';

If it is a full URL address.

config.baseUrl = 'http://example.com/ckfinder/files/';

the path won't be discovered. Notice that the trailing slash is required.

This page was last edited on 28 May 2010, at 07:46.