+/**
+ * This detects if the IMAP server has logins disabled, and if so,
+ * squelches the display of the login form and puts up a message
+ * explaining the situation.
+ */
+if($imap_auth_mech == 'login') {
+ /**
+ * detect disabled login, only when imapServerAddress contains
+ * server address and not mapping. See sqimap_get_user_server()
+ */
+ if (substr($imapServerAddress, 0, 4) != "map:") {
+ $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
+ $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
+ sqimap_logout($imap);
+ if ($logindisabled) {
+ $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
+ _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
+ if (!$use_imap_tls) {
+ $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
+ }
+ $string .= _("Please contact your system administrator and report this error.");
+ error_box($string,$color);
+ exit;
+ }
+ }
+}
+