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/*
* Copyright (C) 2010 Tobias Brunner
* 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.
*/
#include "hydra.h"
#include <utils/debug.h>
typedef struct private_hydra_t private_hydra_t;
/**
* Private additions to hydra_t.
*/
struct private_hydra_t {
/**
* Public members of hydra_t.
*/
hydra_t public;
/**
* Integrity check failed?
*/
bool integrity_failed;
/**
* Number of times we have been initialized
*/
refcount_t ref;
};
/**
* Single instance of hydra_t.
*/
hydra_t *hydra = NULL;
/**
* Described in header.
*/
void libhydra_deinit()
{
private_hydra_t *this = (private_hydra_t*)hydra;
if (!this || !ref_put(&this->ref))
{ /* have more users */
return;
}
this->public.kernel_interface->destroy(this->public.kernel_interface);
free(this);
hydra = NULL;
}
/**
* Described in header.
*/
bool libhydra_init()
{
private_hydra_t *this;
if (hydra)
{ /* already initialized, increase refcount */
this = (private_hydra_t*)hydra;
ref_get(&this->ref);
return !this->integrity_failed;
}
INIT(this,
.ref = 1,
);
hydra = &this->public;
this->public.kernel_interface = kernel_interface_create();
if (lib->integrity &&
!lib->integrity->check(lib->integrity, "libhydra", libhydra_init))
{
DBG1(DBG_LIB, "integrity check of libhydra failed");
this->integrity_failed = TRUE;
}
return !this->integrity_failed;
}
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