Inserted or changed with LCOS 8.50
The override function allows a website to be accessed even though it is classified as forbidden.With this feature enabled, the content filter informs the user why the page was blocked and also provides the option of unlocking the category for the set period of time.
In case of an override, the content filter displays the relevant entry from the block-text table and directly below this, the text from the override-text table together with the 'Override' button. When the user clicks this button the content filter forwards the user to the requested page, if possible. If it is not possible to forward the user to the requested page, the content filter displays an error page.
In the LCOS versions earlier than version 8.50, the block texts, override texts and and error texts and associated attributes were used slightly differently than in the LCOS versions 8.50 and newer.
Depending on the application, the arguments relating to HTTP requests are transmitted in different ways according to the requested URL. In most cases, the browser sends a GET request with the arguments in the URL (e.g. a search term). In the case of an override, the content filter is able to forward GET requests as all the required information is included in the URL. However, in some cases the browser sends POST requests, for example for file uploads where the data to be transmitted is in the header of the request. In this case, the information that should be forwarded in case of an override is not contained in the URL. The content filter can only successfully forward post requests in case of an override if JavaScript has been enabled in the user's browser. Browsers based on the HTML rendering library 'WebKit' do not support the override of post requests with JavaScript.
The following sections show the changes made to the content filter menu system.