added virtual destructors to base classes

and bumped version to 0.4

Signed-off-by: Michael Krelin <hacker@klever.net>

4 files changed, 8 insertions, 0 deletions

diff --git a/include/opkele/consumer.h b/include/opkele/consumer.h
index b9d1e54..50ff692 100644
--- a/include/opkele/consumer.h
+++ b/include/opkele/consumer.h
@@ -21,8 +21,10 @@ namespace opkele {
      */
     class consumer_t {
 	public:
 
+	    virtual ~consumer_t() { }
+
 	    /**
 	     * store association. The function should be overridden in the real
 	     * implementation to provide persistent associations store.
 	     * @param server the OpenID server
diff --git a/include/opkele/extension.h b/include/opkele/extension.h
index ea0c74c..513672f 100644
--- a/include/opkele/extension.h
+++ b/include/opkele/extension.h
@@ -14,8 +14,10 @@ namespace opkele {
      * OpenID extension hooks base class
      */
     class extension_t {
 	public:
+
+	    virtual ~extension_t() { }
 	    /**
 	     * hook called by consumer before submitting data to OpenID server.
 	     * It is supposed to manipulate parameters list.
 	     * @param p parameters about to be submitted to server
diff --git a/include/opkele/server.h b/include/opkele/server.h
index e7e5bb3..dd7fc41 100644
--- a/include/opkele/server.h
+++ b/include/opkele/server.h
@@ -16,8 +16,10 @@ namespace opkele {
      */
     class server_t {
 	public:
 
+	    virtual ~server_t() { }
+
 	    /**
 	     * allocate the new association. The function should be overridden
 	     * in the real implementation to provide persistent assocations
 	     * store.
diff --git a/include/opkele/types.h b/include/opkele/types.h
index 8f4bf73..f732a1e 100644
--- a/include/opkele/types.h
+++ b/include/opkele/types.h
@@ -64,8 +64,10 @@ namespace opkele {
      */
     class association_t {
 	public:
 
+	    virtual ~association_t() { }
+
 	    /**
 	     * retrieve the server with which association was established.
 	     * @return server name
 	     */