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Annotation of embedaddon/strongswan/src/libcharon/plugins/connmark/connmark_plugin.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2014 Martin Willi
        !             3:  * Copyright (C) 2014 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 "connmark_plugin.h"
        !            17: #include "connmark_listener.h"
        !            18: 
        !            19: #include <daemon.h>
        !            20: 
        !            21: typedef struct private_connmark_plugin_t private_connmark_plugin_t;
        !            22: 
        !            23: /**
        !            24:  * private data of connmark plugin
        !            25:  */
        !            26: struct private_connmark_plugin_t {
        !            27: 
        !            28:        /**
        !            29:         * implements plugin interface
        !            30:         */
        !            31:        connmark_plugin_t public;
        !            32: 
        !            33:        /**
        !            34:         * Listener installing netfilter rules
        !            35:         */
        !            36:        connmark_listener_t *listener;
        !            37: };
        !            38: 
        !            39: METHOD(plugin_t, get_name, char*,
        !            40:        private_connmark_plugin_t *this)
        !            41: {
        !            42:        return "connmark";
        !            43: }
        !            44: 
        !            45: /**
        !            46:  * Register listener
        !            47:  */
        !            48: static bool plugin_cb(private_connmark_plugin_t *this,
        !            49:                                          plugin_feature_t *feature, bool reg, void *cb_data)
        !            50: {
        !            51:        if (reg)
        !            52:        {
        !            53:                charon->bus->add_listener(charon->bus, &this->listener->listener);
        !            54:        }
        !            55:        else
        !            56:        {
        !            57:                charon->bus->remove_listener(charon->bus, &this->listener->listener);
        !            58:        }
        !            59:        return TRUE;
        !            60: }
        !            61: 
        !            62: METHOD(plugin_t, get_features, int,
        !            63:        private_connmark_plugin_t *this, plugin_feature_t *features[])
        !            64: {
        !            65:        static plugin_feature_t f[] = {
        !            66:                PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
        !            67:                        PLUGIN_PROVIDE(CUSTOM, "connmark"),
        !            68:        };
        !            69:        *features = f;
        !            70:        return countof(f);
        !            71: }
        !            72: 
        !            73: METHOD(plugin_t, destroy, void,
        !            74:        private_connmark_plugin_t *this)
        !            75: {
        !            76:        this->listener->destroy(this->listener);
        !            77:        free(this);
        !            78: }
        !            79: 
        !            80: /**
        !            81:  * Plugin constructor
        !            82:  */
        !            83: plugin_t *connmark_plugin_create()
        !            84: {
        !            85:        private_connmark_plugin_t *this;
        !            86: 
        !            87:        if (!lib->caps->keep(lib->caps, CAP_NET_ADMIN))
        !            88:        {
        !            89:                DBG1(DBG_NET, "connmark plugin requires CAP_NET_ADMIN capability");
        !            90:                return NULL;
        !            91:        }
        !            92: 
        !            93:        if (!lib->caps->keep(lib->caps, CAP_NET_RAW))
        !            94:        {
        !            95:                DBG1(DBG_NET, "connmark plugin requires CAP_NET_RAW capability");
        !            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:                .listener = connmark_listener_create(),
        !           108:        );
        !           109: 
        !           110:        return &this->public.plugin;
        !           111: }