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Annotation of embedaddon/strongswan/src/libtpmtss/plugins/tpm/tpm_plugin.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2017 Andreas Steffen
        !             3:  * HSR Hochschule fuer Technik Rapperswil
        !             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 "tpm_plugin.h"
        !            17: #include "tpm_private_key.h"
        !            18: #include "tpm_cert.h"
        !            19: #include "tpm_rng.h"
        !            20: 
        !            21: #include <tpm_tss.h>
        !            22: #include <library.h>
        !            23: 
        !            24: typedef struct private_tpm_plugin_t private_tpm_plugin_t;
        !            25: 
        !            26: /**
        !            27:  * private data of tpm_plugin
        !            28:  */
        !            29: struct private_tpm_plugin_t {
        !            30: 
        !            31:        /**
        !            32:         * public functions
        !            33:         */
        !            34:        tpm_plugin_t public;
        !            35: };
        !            36: 
        !            37: METHOD(plugin_t, get_name, char*,
        !            38:        private_tpm_plugin_t *this)
        !            39: {
        !            40:        return "tpm";
        !            41: }
        !            42: 
        !            43: METHOD(plugin_t, get_features, int,
        !            44:        private_tpm_plugin_t *this, plugin_feature_t *features[])
        !            45: {
        !            46:        static plugin_feature_t f_rng[] = {
        !            47:                PLUGIN_REGISTER(RNG, tpm_rng_create),
        !            48:                        PLUGIN_PROVIDE(RNG, RNG_STRONG),
        !            49:                        PLUGIN_PROVIDE(RNG, RNG_TRUE),
        !            50:        };
        !            51:        static plugin_feature_t f_privkey[] = {
        !            52:                PLUGIN_REGISTER(PRIVKEY, tpm_private_key_connect, FALSE),
        !            53:                        PLUGIN_PROVIDE(PRIVKEY, KEY_ANY),
        !            54:        };
        !            55:        static plugin_feature_t f_cert[] = {
        !            56:                PLUGIN_REGISTER(CERT_DECODE, tpm_cert_load, FALSE),
        !            57:                        PLUGIN_PROVIDE(CERT_DECODE, CERT_X509),
        !            58:                                PLUGIN_DEPENDS(CERT_DECODE, CERT_X509),
        !            59:        };
        !            60:        static plugin_feature_t f[countof(f_rng) + countof(f_privkey) +
        !            61:                                                          countof(f_cert)] = {};
        !            62:        static int count = 0;
        !            63: 
        !            64:        if (!count)
        !            65:        {
        !            66:                plugin_features_add(f, f_privkey, countof(f_privkey), &count);
        !            67:                plugin_features_add(f, f_cert, countof(f_cert), &count);
        !            68: 
        !            69:                if (lib->settings->get_bool(lib->settings,
        !            70:                                                                "%s.plugins.tpm.use_rng", FALSE, lib->ns))
        !            71:                {
        !            72:                        plugin_features_add(f, f_rng, countof(f_rng), &count);
        !            73:                }
        !            74:        }
        !            75:        *features = f;
        !            76: 
        !            77:        return count;
        !            78: }
        !            79: 
        !            80: METHOD(plugin_t, destroy, void,
        !            81:        private_tpm_plugin_t *this)
        !            82: {
        !            83:        free(this);
        !            84:        libtpmtss_deinit();
        !            85: }
        !            86: 
        !            87: /*
        !            88:  * see header file
        !            89:  */
        !            90: plugin_t *tpm_plugin_create()
        !            91: {
        !            92:        private_tpm_plugin_t *this;
        !            93: 
        !            94:        if (!libtpmtss_init())
        !            95:        {
        !            96:                return NULL;
        !            97:        }
        !            98: 
        !            99:        INIT(this,
        !           100:                .public = {
        !           101:                        .plugin = {
        !           102:                                .get_name = _get_name,
        !           103:                                .get_features = _get_features,
        !           104:                                .destroy = _destroy,
        !           105:                        },
        !           106:                },
        !           107:        );
        !           108: 
        !           109:        return &this->public.plugin;
        !           110: }