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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/rdrand/rdrand_plugin.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2012 Martin Willi
                      3:  * Copyright (C) 2012 revosec AG
                      4:  *
                      5:  * This program is free software; you can redistribute it and/or modify it
                      6:  * under the terms of the GNU General Public License as published by the
                      7:  * Free Software Foundation; either version 2 of the License, or (at your
                      8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
                      9:  *
                     10:  * This program is distributed in the hope that it will be useful, but
                     11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
                     13:  * for more details.
                     14:  */
                     15: 
                     16: #include "rdrand_plugin.h"
                     17: #include "rdrand_rng.h"
                     18: 
                     19: #include <stdio.h>
                     20: 
                     21: #include <library.h>
                     22: #include <utils/debug.h>
                     23: #include <utils/cpu_feature.h>
                     24: 
                     25: typedef struct private_rdrand_plugin_t private_rdrand_plugin_t;
                     26: typedef enum cpuid_feature_t cpuid_feature_t;
                     27: 
                     28: /**
                     29:  * private data of rdrand_plugin
                     30:  */
                     31: struct private_rdrand_plugin_t {
                     32: 
                     33:        /**
                     34:         * public functions
                     35:         */
                     36:        rdrand_plugin_t public;
                     37: };
                     38: 
                     39: METHOD(plugin_t, get_name, char*,
                     40:        private_rdrand_plugin_t *this)
                     41: {
                     42:        return "rdrand";
                     43: }
                     44: 
                     45: METHOD(plugin_t, get_features, int,
                     46:        private_rdrand_plugin_t *this, plugin_feature_t *features[])
                     47: {
                     48:        static plugin_feature_t f[] = {
                     49:                PLUGIN_REGISTER(RNG, rdrand_rng_create),
                     50:                        PLUGIN_PROVIDE(RNG, RNG_WEAK),
                     51:                        PLUGIN_PROVIDE(RNG, RNG_STRONG),
                     52:                        PLUGIN_PROVIDE(RNG, RNG_TRUE),
                     53:                                PLUGIN_DEPENDS(CRYPTER, ENCR_AES_CBC, 16),
                     54:        };
                     55:        *features = f;
                     56:        if (cpu_feature_available(CPU_FEATURE_RDRAND))
                     57:        {
                     58:                DBG2(DBG_LIB, "detected RDRAND support, enabled");
                     59:                return countof(f);
                     60:        }
                     61:        DBG2(DBG_LIB, "no RDRAND support detected, disabled");
                     62:        return 0;
                     63: }
                     64: 
                     65: METHOD(plugin_t, destroy, void,
                     66:        private_rdrand_plugin_t *this)
                     67: {
                     68:        free(this);
                     69: }
                     70: 
                     71: /*
                     72:  * see header file
                     73:  */
                     74: plugin_t *rdrand_plugin_create()
                     75: {
                     76:        private_rdrand_plugin_t *this;
                     77: 
                     78:        INIT(this,
                     79:                .public = {
                     80:                        .plugin = {
                     81:                                .get_name = _get_name,
                     82:                                .get_features = _get_features,
                     83:                                .reload = (void*)return_false,
                     84:                                .destroy = _destroy,
                     85:                        },
                     86:                },
                     87:        );
                     88: 
                     89:        return &this->public.plugin;
                     90: }