implemented handshake retry on the client side

src/libimcv/plugins/imc_test/imc_test.c

@@ -68,6 +68,9 @@ TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
 										  TNC_ConnectionState new_state)
 {
 	imc_state_t *state;
+	imc_test_state_t *test_state;
+	char *command;
+	bool retry;
 
 	if (!imc_test)
 	{
@@ -77,10 +80,35 @@ TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
 	switch (new_state)
 	{
 		case TNC_CONNECTION_STATE_CREATE:
-			state = imc_test_state_create(connection_id);
+			command = lib->settings->get_str(lib->settings,
+						 "libimcv.plugins.imc-test.command", "none");
+			retry = lib->settings->get_bool(lib->settings,
+								"libimcv.plugins.imc-test.retry", FALSE);
+			state = imc_test_state_create(connection_id, command, retry);
 			return imc_test->create_state(imc_test, state);
 		case TNC_CONNECTION_STATE_DELETE:
 			return imc_test->delete_state(imc_test, connection_id);
+		case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
+		case TNC_CONNECTION_STATE_ACCESS_NONE:
+			/* get current IMC state and update it */
+			if (!imc_test->get_state(imc_test, connection_id, &state))
+			{
+				return TNC_RESULT_FATAL;
+			}
+			state->change_state(state, new_state);
+			test_state = (imc_test_state_t*)state;
+
+			/* do a handshake retry? */
+			if (test_state->do_handshake_retry(test_state))
+			{
+				command = lib->settings->get_str(lib->settings,
+								"libimcv.plugins.imc-test.retry_command",
+								test_state->get_command(test_state));
+				test_state->set_command(test_state, command);
+				return imc_test->request_handshake_retry(imc_id, connection_id,
+									TNC_RETRY_REASON_IMC_REMEDIATION_COMPLETE);
+			}
+			return TNC_RESULT_SUCCESS;
 		default:
 			return imc_test->change_state(imc_test, connection_id, new_state);
 	}
@@ -90,12 +118,16 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
 {
 	pa_tnc_msg_t *msg;
 	pa_tnc_attr_t *attr;
-	char *command;
+	imc_state_t *state;
+	imc_test_state_t *test_state;
 	TNC_Result result;
 
-	command = lib->settings->get_str(lib->settings,
-						 "libimcv.plugins.imc-test.command", "none");
-	attr = ita_attr_command_create(command);
+	if (!imc_test->get_state(imc_test, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+	test_state = (imc_test_state_t*)state;
+	attr = ita_attr_command_create(test_state->get_command(test_state));
 	attr->set_noskip_flag(attr, TRUE);
 	msg = pa_tnc_msg_create();
 	msg->add_attribute(msg, attr);

src/libimcv/plugins/imc_test/imc_test_state.c

@@ -38,6 +38,15 @@ struct private_imc_test_state_t {
 	 */
 	TNC_ConnectionState state;
 
+	/**
+	 * Command to transmit to IMV
+	 */
+	char *command;
+
+	/**
+	 * Do a handshake retry
+	 */
+	bool handshake_retry;
 };
 
 METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
@@ -55,13 +64,43 @@ METHOD(imc_state_t, change_state, void,
 METHOD(imc_state_t, destroy, void,
 	private_imc_test_state_t *this)
 {
+	free(this->command);
 	free(this);
 }
 
+METHOD(imc_test_state_t, get_command, char*,
+	private_imc_test_state_t *this)
+{
+	return this->command;
+}
+
+METHOD(imc_test_state_t, set_command, void,
+	private_imc_test_state_t *this, char* command)
+{
+	char *old_command;
+
+	old_command = this->command;
+	this->command = strdup(command);
+	free(old_command);
+}
+
+METHOD(imc_test_state_t, do_handshake_retry, bool,
+	private_imc_test_state_t *this)
+{
+	bool retry;
+
+	/* test and reset handshake_retry flag */
+	retry = this->handshake_retry;
+	this->handshake_retry = FALSE;
+	return retry;
+}
+
+
 /**
  * Described in header.
  */
-imc_state_t *imc_test_state_create(TNC_ConnectionID connection_id)
+imc_state_t *imc_test_state_create(TNC_ConnectionID connection_id,
+								   char *command, bool retry)
 {
 	private_imc_test_state_t *this;
 
@@ -72,9 +111,14 @@ imc_state_t *imc_test_state_create(TNC_ConnectionID connection_id)
 				.change_state = _change_state,
 				.destroy = _destroy,
 			},
+			.get_command = _get_command,
+			.set_command = _set_command,
+			.do_handshake_retry = _do_handshake_retry,
 		},
 		.state = TNC_CONNECTION_STATE_CREATE,
 		.connection_id = connection_id,
+		.command = strdup(command),
+		.handshake_retry = retry,
 	);
 	
 	return &this->public.interface;

src/libimcv/plugins/imc_test/imc_test_state.h

@@ -35,14 +35,37 @@ struct imc_test_state_t {
 	 * imc_state_t interface
 	 */
 	imc_state_t interface;
+
+	/**
+	 * get the command to send to IMV
+	 *
+	 * @return				commmand to send to IMV
+	 */
+	char* (*get_command)(imc_test_state_t *this);
+
+	/**
+	 * set the command to send to IMV
+	 *
+	 * @param command		commmand to send to IMV
+	 */
+	void (*set_command)(imc_test_state_t *this, char *command);
+
+	/**
+	 * Test and reset the retry handshake flag
+	 *
+	 * @return				TRUE if a handshake retry should be done
+	 */
+	bool (*do_handshake_retry)(imc_test_state_t *this);
 };
 
 /**
  * Create an imc_test_state_t instance
  *
  * @param id		connection ID
- * @param rounds	total number of IMC re-measurements
+ * @param command	command to send to IMV
+ * @param retry		TRUE if a handshake retry should be done
  */
-imc_state_t* imc_test_state_create(TNC_ConnectionID id);
+imc_state_t* imc_test_state_create(TNC_ConnectionID id, char* command,
+								   bool retry);
 
 #endif /** IMC_TEST_STATE_H_ @}*/