Forum OpenACS Q&A: i keep getting this message

Posted by George Adamides on 01/26/04 07:33 AM

Error: return: failed to redirect '404': exceeded recursion limit of 3
Notice: ns_getform using encoding iso8859-7 for charset iso-8859-7

Can anyone tell me what is the problem and how to it?

2: Re: i keep getting this message (response to 1)

Posted by Torben Brosten on 01/26/04 08:38 AM

I think this error results only from an undefined 404 error page, which aolserver tries to redirect to, but upon not finding the page, repeatedly tries again. Gives up after 3 tries and produces its own 404 page.

Openacs4.6.3 has a parameter that defines the error page directory. Under serviceurl/admin/site-map goto set parameters of Main Site. Look at the GlobalURLStub parameter. Value defaults to /global.

3: Re: i keep getting this message (response to 1)

Posted by Nagita Karunaratne on 01/26/04 10:57 AM

Try putting in some 'ns_log notice ...' lines into request-processor-procs.tcl and trace the execution path from rp_filter to rp_handler and rp_internal_redirect and you'll find the reason soon enough.

4: Re: i keep getting this message (response to 3)

Posted by Brian Fenton on 11/05/04 11:29 AM

I'm seeing this too and it's puzzling me. I set GlobalURLStub to /global and created a directory called global containing a file-not-found.html and a forbidden.html. I grepped the source code for GlobalURLStub and the only place it's being used is in navigation-procs.tcl (to build some html in ad_menu_footer). So I don't see how it's being used in the request-processor.

Where is the correct location for this global directory? I've tried putting it a few places: $server, $server/www and even /apps/aol

Thanks.

5: Re: i keep getting this message (response to 1)

Posted by Torben Brosten on 11/05/04 09:30 PM

Hi Brian,

There's an ns_param 404 (and 403) in the config.tcl file. Aolserver doc[1] shows these as absolute urls which means using service0/www/global/file-not-found.html" for all cases. The openacs config.tcl file shows the 404 parameter values as relative urls, apparently so that a custom 404 page can be created for each directory in the website.

[1] http://www.aolserver.com/docs/admin/config-reference.tcl.txt

[2] http://cvs.openacs.org/cvs/openacs-4/etc/config.tcl?rev=1.19.2.13&only_with_tag=oacs-5-1&view=markup

6: Re: i keep getting this message (response to 5)

Posted by Brian Fenton on 11/08/04 10:35 AM

Cheers Torben, I've tried changing both of those, but no joy. I've an old version of OpenACS, so maybe the GlobalURLStub wasn't fully implemented back then. Thanks anyway.

7: Re: i keep getting this message (response to 1)

Posted by Torben Brosten on 11/08/04 04:21 PM

Hi Brian,

Are the errors resulting from valid http requests in the server log?

On aolserver3.4.2 I see security exploit attempts like this that produce the recursion error:

"SEARCH /(followed by thousands of characters)" 404 549 "" ""

Torben

8: Re: i keep getting this message (response to 7)

Posted by Brian Fenton on 11/09/04 10:46 AM

Yes, they're definitely valid requests. I can see them appear in the log when I type in a bogus URL.