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/*
* Copyright (C) 2007 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup controller_i controller
* @{ @ingroup control
*/
#ifndef CONTROLLER_H_
#define CONTROLLER_H_
#include <bus/bus.h>
/**
* Callback to log things triggered by controller.
*
* @param param parameter supplied when controller method was called
* @param group debugging group
* @param level verbosity level
* @param ike_sa associated IKE_SA, if any
* @param message log message
* @return FALSE to return from called controller method
*/
typedef bool (*controller_cb_t)(void* param, debug_t group, level_t level,
ike_sa_t* ike_sa, const char *message);
/**
* Empty callback function for controller_t methods.
*
* If you want to do a synchronous call, but don't need a callback, pass
* this function to the controller methods.
*/
bool controller_cb_empty(void *param, debug_t group, level_t level,
ike_sa_t *ike_sa, const char *message);
typedef struct controller_t controller_t;
/**
* The controller provides a simple interface to run actions.
*
* The controller starts actions by creating jobs. It then tries to
* evaluate the result of the operation by listening on the bus.
*
* Passing NULL as callback to the managers function calls them asynchronously.
* If a callback is specified, they are called synchronously. There is a default
* callback "controller_cb_empty" if you want to call a function
* synchronously, but don't need a callback.
*/
struct controller_t {
/**
* Create an enumerator for all IKE_SAs.
*
* The enumerator blocks the IKE_SA manager until it gets destroyed. Do
* not call another interface/manager method while the enumerator is alive.
*
* @param wait TRUE to wait for checked out SAs, FALSE to skip
* @return enumerator, locks IKE_SA manager until destroyed
*/
enumerator_t* (*create_ike_sa_enumerator)(controller_t *this, bool wait);
/**
* Initiate a CHILD_SA, and if required, an IKE_SA.
*
* If a callback is provided the function is synchronous and thus blocks
* until the IKE_SA is established or failed.
*
* @param peer_cfg peer_cfg to use for IKE_SA setup
* @param child_cfg child_cfg to set up CHILD_SA from
* @param cb logging callback
* @param param parameter to include in each call of cb
* @param timeout timeout in ms to wait for callbacks, 0 to disable
* @param limits whether to check limits regarding IKE_SA initiation
* @return
* - SUCCESS, if CHILD_SA established
* - FAILED, if setup failed
* - NEED_MORE, if callback returned FALSE
* - OUT_OF_RES if timed out
* - INVALID_STATE if limits prevented initiation
*/
status_t (*initiate)(controller_t *this,
peer_cfg_t *peer_cfg, child_cfg_t *child_cfg,
controller_cb_t callback, void *param, u_int timeout,
bool limits);
/**
* Terminate an IKE_SA and all of its CHILD_SAs.
*
* If a callback is provided the function is synchronous and thus blocks
* until the IKE_SA is properly deleted, or the call timed out.
*
* @param unique_id unique id of the IKE_SA to terminate.
* @param cb logging callback
* @param param parameter to include in each call of cb
* @param timeout timeout in ms to wait for callbacks, 0 to disable
* @return
* - SUCCESS, if CHILD_SA terminated
* - NOT_FOUND, if no such CHILD_SA found
* - NEED_MORE, if callback returned FALSE
* - OUT_OF_RES if timed out
*/
status_t (*terminate_ike)(controller_t *this, u_int32_t unique_id,
controller_cb_t callback, void *param,
u_int timeout);
/**
* Terminate a CHILD_SA.
*
* If a callback is provided the function is synchronous and thus blocks
* until the CHILD_SA is properly deleted, or the call timed out.
*
* @param unique_id CHILD_SA unique ID to terminate
* @param cb logging callback
* @param param parameter to include in each call of cb
* @param timeout timeout in ms to wait for callbacks, 0 to disable
* @return
* - SUCCESS, if CHILD_SA terminated
* - NOT_FOUND, if no such CHILD_SA found
* - NEED_MORE, if callback returned FALSE
* - OUT_OF_RES if timed out
*/
status_t (*terminate_child)(controller_t *this, u_int32_t unique_id,
controller_cb_t callback, void *param,
u_int timeout);
/**
* Destroy a controller_t instance.
*/
void (*destroy) (controller_t *this);
};
/**
* Creates a controller instance.
*
* @return controller_t object
*/
controller_t *controller_create();
#endif /** CONTROLLER_H_ @}*/
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