[cups-devel] 2.x web interface: blank pages due to redirecting issue

[Peter Mattern]

Hello.

As of 2.x some actions within CUPS' web interface yield blank pages, at 
least on Linux, apparently to an issue redirecting.

Problem appears when default options are set or changed, either as last 
step of adding a new printer or by choosing the respective option from 
drop down "Administration" on a printer's page 
(localhost:631/printers/<queue>). After hitting "Set Default Options" 
the usual page reporting that changes were successfully applied comes up 
but next there's a blank page. The corresponding URI is 
localhost:631/admin/?OP=redirect&URL=/printers/<queue>.
Similar findings when changes are made at localhost:631/admin - "Server 
Settings and submitted by "Change Settings". Here the blank page is 
following the one informing about the server restarting, the 
corresponding URI is localhost:631/admin/?OP=redirect.

No malfunction is associated with the problem. Rather invoking the pages 
that should have been reached manually shows all actions were indeed 
performed as expected.

Seen on Arch Linux x86_64 using either the distro's package or 2.0.1 
sources from cups.org, compiled by simply running ./configure, make and 
make install. Same findings using Firefox, Chromium and QupZilla. Can't 
check on other platforms right now, unfortunately.

Regards,

Peter Mattern