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/*
* Copyright (C) 2012 Martin Willi
* Copyright (C) 2012 revosec AG
*
* 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 "rdrand_plugin.h"
#include "rdrand_rng.h"
#include <stdio.h>
#include <library.h>
#include <utils/debug.h>
#include <utils/cpu_feature.h>
typedef struct private_rdrand_plugin_t private_rdrand_plugin_t;
typedef enum cpuid_feature_t cpuid_feature_t;
/**
* private data of rdrand_plugin
*/
struct private_rdrand_plugin_t {
/**
* public functions
*/
rdrand_plugin_t public;
};
METHOD(plugin_t, get_name, char*,
private_rdrand_plugin_t *this)
{
return "rdrand";
}
METHOD(plugin_t, get_features, int,
private_rdrand_plugin_t *this, plugin_feature_t *features[])
{
static plugin_feature_t f[] = {
PLUGIN_REGISTER(RNG, rdrand_rng_create),
PLUGIN_PROVIDE(RNG, RNG_WEAK),
PLUGIN_PROVIDE(RNG, RNG_STRONG),
PLUGIN_PROVIDE(RNG, RNG_TRUE),
PLUGIN_DEPENDS(CRYPTER, ENCR_AES_CBC, 16),
};
*features = f;
if (cpu_feature_available(CPU_FEATURE_RDRAND))
{
DBG2(DBG_LIB, "detected RDRAND support, enabled");
return countof(f);
}
DBG2(DBG_LIB, "no RDRAND support detected, disabled");
return 0;
}
METHOD(plugin_t, destroy, void,
private_rdrand_plugin_t *this)
{
free(this);
}
/*
* see header file
*/
plugin_t *rdrand_plugin_create()
{
private_rdrand_plugin_t *this;
INIT(this,
.public = {
.plugin = {
.get_name = _get_name,
.get_features = _get_features,
.reload = (void*)return_false,
.destroy = _destroy,
},
},
);
return &this->public.plugin;
}
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