Redirecting OAM errors

In a previous post I explained how to avoid an OAM timeout message being displayed in WebCenter Portal. Now, I am going to deal with OAM error pages at OHS/Apache level.

Recently, we faced the following access_denied error:

http://<myhost>:<ohs_port>/oic_rp/return?error=access_denied&state=2441cc276a41daca872fb2eaa364e6da785b0f58

To prevent that error to be displayed to users, we wanted to redirect that URL to the WC Portal login page. As OHS was the web server, we tried different RedirectMatch instructions like the following:

RedirectMatch 301 ^/oic_rp/return?error=access_denied.* http://<myhost>:<ohs_port>/myApp

However, the special character '?' was an issue and redirection did not work. Then we tried RewriteRule module with special characters flags (NE, B), but again, it did not work.

The solution was capturing errors instead of URL using RewriteCond. In this case:

        RewriteEngine on

        RewriteOptions Inherit

        RewriteCond %{QUERY_STRING} error=access_denied [NC]

        RewriteCond %{REQUEST_URI} ^/oic_rp/return$ [NC]

        RewriteRule ^/(.*) http://<myhost>:<ohs_port>/myApp? 


After restarting OHS, the naughty URL was redirecting to the login page.

References:

OAM Standard Error Codes

Redirecting and Remapping with mod_rewrite 

Apache Module mod_rewrite

RewriteRule Flags