Ticket #10788: 10788-transient-filters-safe-fix.patch

functions.php

@@ -658 +658 @@
         global $_wp_using_ext_object_cache, $wpdb;
 
         if ( $_wp_using_ext_object_cache ) {
-                return wp_cache_delete($transient, 'transient');
+                $value = wp_cache_delete($transient, 'transient');
         } else {
                 $transient = '_transient_' . esc_sql($transient);
-                return delete_option($transient);
+                $value = delete_option($transient);
         }
+
+        return apply_filters('delete_transient_' . $transient, $value);
 }
 
 /**
@@ -688 +690 @@
         if ( $_wp_using_ext_object_cache ) {
                 $value = wp_cache_get($transient, 'transient');
         } else {
-                $transient_option = '_transient_' . esc_sql($transient);
+                $transient_option = '_transient_' . $transient;
                 // If option is not in alloptions, it is not autoloaded and thus has a timeout
                 $alloptions = wp_load_alloptions();
                 if ( !isset( $alloptions[$transient_option] ) ) {
-                        $transient_timeout = '_transient_timeout_' . esc_sql($transient);
-                        if ( get_option($transient_timeout) < time() ) {
+                        $transient_timeout = '_transient_timeout_' . $transient;
+                        if ( get_option( esc_sql($transient_timeout) ) < time() ) {
                                 delete_option($transient_option);
                                 delete_option($transient_timeout);
                                 return false;
                         }
                 }
 
-                $value = get_option($transient_option);
+                $value = get_option( esc_sql($transient_option) );
         }
 
         return apply_filters('transient_' . $transient, $value);
@@ -736 +738 @@
                                 $autoload = 'no';
                                 add_option($transient_timeout, time() + $expiration, '', 'no');
                         }
-                        return add_option($transient, $value, '', $autoload);
+                        $value = add_option($transient, $value, '', $autoload);
                 } else {
                         if ( 0 != $expiration )
                                 update_option($transient_timeout, time() + $expiration);
-                        return update_option($transient, $value);
+                        $value = update_option($transient, $value);
                 }
         }
+
+        return apply_filters('set_transient_' . $transient, $value);
 }
 
 /**