Add rcube_db::escapeSimple() method for backward compat.

plugins/virtuser_query/virtuser_query.php

@@ -55,7 +55,7 @@ class virtuser_query extends rcube_plugin
     {
 	    $dbh = $this->app->get_dbh();
 
-	    $sql_result = $dbh->query(preg_replace('/%u/', $dbh->escapeSimple($p['user']), $this->config['email']));
+	    $sql_result = $dbh->query(preg_replace('/%u/', $dbh->quote($p['user']), $this->config['email']));
 
 	    while ($sql_arr = $dbh->fetch_array($sql_result)) {
 	        if (strpos($sql_arr[0], '@')) {
@@ -91,7 +91,7 @@ class virtuser_query extends rcube_plugin
     {
         $dbh = $this->app->get_dbh();
 
-        $sql_result = $dbh->query(preg_replace('/%m/', $dbh->escapeSimple($p['email']), $this->config['user']));
+        $sql_result = $dbh->query(preg_replace('/%m/', $dbh->quote($p['email']), $this->config['user']));
 
         if ($sql_arr = $dbh->fetch_array($sql_result)) {
             $p['user'] = $sql_arr[0];
@@ -107,7 +107,7 @@ class virtuser_query extends rcube_plugin
     {
         $dbh = $this->app->get_dbh();
 
-        $sql_result = $dbh->query(preg_replace('/%u/', $dbh->escapeSimple($p['user']), $this->config['host']));
+        $sql_result = $dbh->query(preg_replace('/%u/', $dbh->quote($p['user']), $this->config['host']));
 
         if ($sql_arr = $dbh->fetch_array($sql_result)) {
             $p['host'] = $sql_arr[0];

program/lib/Roundcube/rcube_db.php

@@ -647,6 +647,20 @@ class rcube_db
         return $this->quote_identifier($str);
     }
 
+    /**
+     * Quotes a string so it can be safely used as a table or column name
+     *
+     * @param string $str Value to quote
+     *
+     * @return string Quoted string for use in query
+     * @deprecated    Replaced by rcube_db::quote
+     * @see           rcube_db::quote
+     */
+    public function simpleEscape($str)
+    {
+        return $this->quote($str);
+    }
+
     /**
      * Quotes a string so it can be safely used as a table or column name
      *