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