1 files changed, 2 insertions, 0 deletions

diff --git a/include/opkele/association.h b/include/opkele/association.h
index a8f3915..72eff5b 100644
--- a/include/opkele/association.h
+++ b/include/opkele/association.h
@@ -1,68 +1,70 @@
 #ifndef __OPKELE_ASSOCIATION_H
 #define __OPKELE_ASSOCIATION_H
 
 #include <time.h>
 #include <opkele/types.h>
 
 /**
  * @file
  * @brief reference implementation of association_t
  */
 
 namespace opkele {
 
     /**
      * reference implementation of association_t class.
      */
     class association : public association_t {
         public:
             /**
              * OpenID server name
              */
             string _server;
             /**
              * association handle
              */
             string _handle;
             /**
              * association type
              */
             string _assoc_type;
             /**
              * the secret
              */
             secret_t _secret;
             /**
              * expiration time
              */
             time_t _expires;
             /**
              * statelessness of the assoc_handle
              */
             bool _stateless;
 
             /**
              * @param __server the server name
              * @param __handle association handle
              * @param __assoc_type association type
              * @param __secret the secret
              * @param __expires expiration time
              * @param __stateless statelessness of the assoc_handle
              */
             association(const string& __server, const string& __handle,
                     const string& __assoc_type, const secret_t& __secret,
                     time_t __expires, bool __stateless)
                 : _server(__server), _handle(__handle), _assoc_type(__assoc_type),
                 _secret(__secret), _expires(__expires), _stateless(__stateless) { }
 
             virtual string server() const { return _server; }
             virtual string handle() const { return _handle; }
             virtual string assoc_type() const { return _assoc_type; }
             virtual secret_t secret() const { return _secret; }
             virtual int expires_in() const { return _expires-time(0); }
             virtual bool stateless() const { return _stateless; }
+
+            virtual bool is_expired() const { return _expires<time(0); }
     };
 
 }
 
 #endif /* __OPKELE_ASSOCIATION_H */