From 3b9821b4f63ccf9f1f938447e0a534dbae4b6636 Mon Sep 17 00:00:00 2001
From: Dmitry Yu Okunev <dyokunev@ut.mephi.ru>
Date: Fri, 7 Oct 2016 15:54:27 +0300
Subject: [PATCH] Getting config only one time (cache it)

---
 cas_authn/cas_authn.php | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/cas_authn/cas_authn.php b/cas_authn/cas_authn.php
index 7161820..91d7dd6 100644
--- a/cas_authn/cas_authn.php
+++ b/cas_authn/cas_authn.php
@@ -22,6 +22,7 @@
 class cas_authn extends rcube_plugin {
     
     private $cas_inited;
+    private $_cache_cfg = null;
     
     /**
      * Initialize plugin
@@ -46,8 +47,20 @@ function init() {
         $this->add_hook('template_object_loginform', array($this, 'add_cas_login_html'));
     }
 
+    /**
+     * Gets config and caches
+     *
+     * @return array configuration array
+     */
+    function getCfg() {
+        if (is_null($_cache_cfg)) {
+             $_cache_cfg = rcmail::get_instance()->config->all();
+        }
+        return $_cache_cfg;
+    }
+
     function isDisabled() {
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
         if (is_array($cfg['cas_disable_for_domains'])) {
             foreach ($cfg['cas_disable_for_domains'] as $domain_pattern) {
                 if (preg_match($domain_pattern, $_SERVER['SERVER_NAME'])) {
@@ -122,7 +135,7 @@ function startup($args) {
             $user = phpCAS::getUser();
             $pass = '';
             // retrieve credentials, either a Proxy Ticket or 'masteruser' password
-            $cfg = rcmail::get_instance()->config->all();
+            $cfg = $this->getCfg();
             if ($cfg['cas_proxy']) {
                 $_SESSION['cas_pt'][php_uname('n')] = phpCAS::retrievePT($cfg['cas_imap_name'], $err_code, $output);
                 $pass = $_SESSION['cas_pt'][php_uname('n')];
@@ -175,7 +188,7 @@ function startup($args) {
      */
     function imap_connect($args) {
         // retrieve configuration
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
         
         // RoundCube is acting as CAS proxy
         if ($cfg['cas_proxy']) {
@@ -237,7 +250,7 @@ function imap_connect($args) {
      */
     function smtp_connect($args) {
         // retrieve configuration
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
         
         // RoundCube is acting as CAS proxy and performing SMTP authn
         if ($cfg['cas_proxy'] && $args['smtp_user'] && $args['smtp_pass']) {
@@ -267,7 +280,7 @@ function smtp_connect($args) {
      */
     function sieverules_connect($args) {
         // retrieve configuration
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
 
         // RoundCube is acting as CAS proxy
         if ($cfg['opt_cas_proxy']) {
@@ -293,7 +306,7 @@ function add_cas_login_html($args) {
         $RCMAIL = rcmail::get_instance();
         $this->add_texts('localization');
         // retrieve configuration
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
     
         // Force CAS authn?
 	if($cfg["cas_force"]) {
@@ -329,7 +342,7 @@ private function cas_init() {
 		session_destroy();
 	    }
 
-            $cfg = rcmail::get_instance()->config->all();
+            $cfg = $this->getCfg();
 
             // include phpCAS
             require_once('CAS.php');
@@ -420,7 +433,7 @@ private function generate_url($params) {
                 $delm = '&';
             }
         }
-        $cfg = rcmail::get_instance()->config->all();
+        $cfg = $this->getCfg();
         if ( $cfg['cas_webmail_server_name'] ) {
           $serverName = $cfg['cas_webmail_server_name'];
         } else {