client: Don't register agent without a need

Register agent iff no '--dontask' command-line option has been provided
or there are some other command line options besides '--dontask'

client/command.c

@@ -76,6 +76,12 @@ bool command_option_get(const char *name, const char **value_out)
 	return false;
 }
 
+bool command_needs_no_agent(void)
+{
+	return command_option_get(COMMAND_OPTION_DONTASK, NULL) &&
+					(l_queue_length(command_options) == 1);
+}
+
 static enum cmd_status cmd_version(const char *entity,
 						char **argv, int argc)
 {

client/command.h

@@ -58,6 +58,7 @@ struct command_family {
 };
 
 bool command_option_get(const char *name, const char **value_out);
+bool command_needs_no_agent(void);
 
 bool command_line_find_token(const char *token, uint8_t num_to_inspect);
 char **command_completion(const char *text, int start, int end);

client/dbus-proxy.c

@@ -704,6 +704,9 @@ static void get_managed_objects_callback(struct l_dbus_message *message,
 	while (l_dbus_message_iter_next_entry(&objects, &path, &object))
 		proxy_interface_create(path, &object);
 
+	if (command_needs_no_agent())
+		goto no_agent;
+
 	if (!agent_manager_register_agent()) {
 		display_error("Failed to register Agent.\n");
 
@@ -715,6 +718,7 @@ static void get_managed_objects_callback(struct l_dbus_message *message,
 		return;
 	}
 
+no_agent:
 	if (!command_is_interactive_mode()) {
 		command_noninteractive_trigger();
 
@@ -829,7 +833,8 @@ bool dbus_proxy_exit(void)
 {
 	struct interface_type_desc *desc;
 
-	agent_manager_unregister_agent();
+	if (!command_needs_no_agent())
+		agent_manager_unregister_agent();
 
 	for (desc = __start___interface; desc < __stop___interface; desc++) {
 		if (!desc->exit)