[horde] Virtual domain support in H4/IMP5

[Antoine Heskia]

Hi,

In my Horde3/IMP4, I used to have a custom hook function in the  
horde/imp/config/hooks.php to support multidomains that I am hosting.
The user points its browser to mail.domain.com, the the login window  
displays "@domain.com" at the end of the username field and horde/imp  
provides username at domain.com to the IMAP server  
(qmail/vpopmail/courier-imap).

This function looks like this:
if (!function_exists('_imp_hook_vinfo')) {
    function _imp_hook_vinfo($type = 'username')
    {
        $vdomain = getenv('HTTP_HOST');
        $vdomain = preg_replace('|^(web)?mail\.|i', '', $vdomain);
        $vdomain = preg_replace('|^imp\.|i', '', $vdomain);
        $vdomain = String::lower($vdomain);

        if ($type == 'username') {
                if ($vdomain == '') {
                        return $_SESSION['imp']['user'];
                } else {
            return (preg_replace('|@.*$|', '',  
$_SESSION['imp']['user']) . '@' . $vdomain);
          }
        } elseif ($type == 'vdomain') {
            return $vdomain;
        } else {
            return PEAR::raiseError('invalid type: ' . $type);
        }
    }
}

I did not find such a feature in Horde4/IMP5.

I can not find a proper information in the documentation.
for "The 'vinfo' hook has been removed.  Use Horde's 'authusername'  
and/or IMP's
'preauthenticate' hooks instead."

I have tried to play a bit with the hook public function  
authusername($userId, $toHorde) in horde/config/hooks.php
but users still need to provide user at domain.com to logon (and they are  
recognized as user at domain.com@domain.com by horde) and the logon  
window does not displays "@domain.com" after the username field.

Regarding
"All hooks that are specific to IMP have been moved from the
``horde/config/hooks.php`` file. Move your existing IMP Hooks from there to
``imp/config/hooks.php``."
this was already in imp/config/hooks.php in Horde3/IMP4. Should I  
copy/paste the code to Horde5/IMP4 ?

Thanks for your support,
Antoine.