[TYPO3] Automatically adding interstitial pages to external links

Tor de Vries hey at tordevries.com
Fri Nov 30 20:08:52 CET 2007

For what it's worth: indeed, there was an extension that (supposedly)  
provided the legal disclaimer I wanted, but it had no documentation,  
the author did not respond to email, and I couldn't get it to work.   
So I made my own extension:


Description: "Redirects all external links to an internal disclaimer  
notice, to remind users that they are leaving your web site. Simple  
and configurable."

If you need this kind of thing, here it is.  Fully documented, as well.

On Nov 21, 2007, at 4:23 PM, Tor de Vries wrote:

> Hello all.  I assist in the operation of a couple of Typo3 sites run
> by nonprofit organizations.  Because of the industry the
> organizations are part of, and because of their ties to the U.S.
> government, we have now been instructed that all links from our site
> to external web sites need to present an "interstitial" warning
> page.  This interstitial page would include a disclaimer that the
> visitor was now leaving Site A and going to external Site B (of which
> Site A is not responsible), with links to continue on to the external
> page or to return to the previous page.
> My TypoScripting is rusty, but I am very experienced with PHP, so my
> initial thought was to create a generic PHP page that accepted link
> values as variables in a URL path, and used those variables to adjust
> the links on the page.  Then I'd need to (somehow) add TypoScript
> that automatically modified all external-bound links to link to this
> generic PHP page with the actual outbound link tacked onto the URL.
> That way, the people who edit and write the content wouldn't have to
> do anything but put in external links; the system would handle the
> outbound interstitial page automatically.  Obviously this wouldn't
> apply for links to internal pages, or links to PDF files on our
> server (of which there are many).
> My second thought was, "That is a stupid idea, there's gotta be an
> extension to magically handle this situation."
> However, I've been unable to find such a thing.  Maybe I am not
> searching for the right terms; I don't know what the proper
> description of this is.  Any suggestions?  What would you do in this
> situation?
> Many thanks in advance.
> - tdv
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