[imp] _prefs_hook_from_addr problem

[David Chang]

Hi all:
There are error messages appear on Horde login screen ,if i enable
$_prefs['from_addr'] hook value to true.

Error messages:
Notice: Undefined offset: 0 in /usr/local/apache/horde.beta/config/hooks.php on
line 132

Notice: Undefined offset: 0 in /usr/local/apache/horde.beta/config/hooks.php on
line 135

Warning: Cannot add header information - headers already sent by (output started
at /usr/local/apache/horde.beta/config/hooks.php:132) in
/usr/local/apache/horde.beta/imp/templates/common-header.inc on line 3

Warning: Cannot add header information - headers already sent by (output started
at /usr/local/apache/horde.beta/config/hooks.php:132) in
/usr/local/apache/horde.beta/imp/templates/common-header.inc on line 4

Therefore before user can login to Horde,the $user = Auth::getAuth() in
hooks.php is undefine and then cause this problem,well i guess so !

My question is :
If that point is true should i specify binddn & password in hooks.php to get
entries from ldap server ?



Configuration:
horde/config/conf.php
---------------------
$conf['auth']['driver'] = 'application';
$conf['auth']['params']['app'] = 'imp';

imp/config/prefs.php
--------------------
// user preferred email address for From: line
$_prefs['from_addr'] = array(
    'value' => '',
    'hook' => true,
    'locked' => false,
    'shared' => true,
    'type' => 'implicit');

horde/config/hooks.php
----------------------
function _prefs_hook_from_addr()
    {
        $ldapServer = 'localhost';
        $ldapPort = '389';
        $searchBase = 'dc=test,dc=example.com';

        $ds = @ldap_connect($ldapServer, $ldapPort);

        $user = Auth::getAuth();

        // You will probably need to replace cn= with uid=; this
        // syntax is for Netware 5.1 nldap.
        $searchResult = @ldap_search($ds, $searchBase, 'uid=' . $user);
        $information = @ldap_get_entries($ds, $searchResult);
        if ($information[0]['maill'][0] != '') {
            $name = $information[0]['mail'][0];
        } else {
            $name = $information[0]['cn'][0];
        }

        ldap_close($ds);

        return (empty($name) ? $user : $name);
  }


Ldap server is Openldap 2.0.25