Extension:ExternalRedirect

The ExternalRedirect extension allows to create redirects to external pages in wiki.

Usage
A new parser function externalredirect with URL as first and only parameter is registered.

Place something like this on wiki page to make it redirect to external site:

This allows, for example, to add external links to Categories (by placing pages with externalredirect in them).

Configuration
Populate this array with NUMERIC namespace IDs where external redirection should be allowed. Only allow on write-protected namespaces! See Manual:Namespace for more info on namespaces and numeric IDs. This example allows redirects from help pages (12) and pages from custom namespace with numeric ID 500.

Populate this array with page names (see magic word ) where external redirection should be allowed. Only allow on write-protected pages! This example allows redirects from the wiki pages about Warren G. Harding and the Teapot Dome Scandal.

The extension will redirect pages that are in the namespace(s) specified in, as well as all of the pages specified in. Therefore you only need to set one of the arrays to get this to work, but you can set both if required.

Set this PCRE regex to achieve more strict destination URL validation. Allow ExternalRedirect only on write-protected namespaces/pages! Regular expressions are not always intuitive and there can be insecure redirects and various injection attacks exploitable on the target sites. This example would allow redirection to any page under https://www.mediawiki.org/ (this is not an example for a secure URL validation regex).

If  is specified it must be matched (in addition to   or  ) for the redirection to occur.

Whether to display link to redirection URL (along with error message) in case externalredirect is used where it is not allowed.

Security
This extension is meant for usage only on write-protected wikis/namespaces/pages. Here is an example how to add a name space editable only by the sysops. In "LocalSettings.php":

With version 1.0.2 there is introduced basic URL validation (using ) which prevents seriously malformed URLs, but still allows redirection to arbitrary sites.

In version 1.2.0  setting is introduced.