src/libcharon/plugins/resolve/resolve_plugin.c

   1 /*
   2  * Copyright (C) 2009 Martin Willi
   3  * 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 "resolve_plugin.h"
  17 #include "resolve_handler.h"
  18
  19 #include <hydra.h>
  20
  21 typedef struct private_resolve_plugin_t private_resolve_plugin_t;
  22
  23 /**
  24  * private data of resolve plugin
  25  */
  26 struct private_resolve_plugin_t {
  27
  28         /**
  29          * implements plugin interface
  30          */
  31         resolve_plugin_t public;
  32
  33         /**
  34          * The registered DNS attribute handler
  35          */
  36         resolve_handler_t *handler;
  37 };
  38
  39 METHOD(plugin_t, get_name, char*,
  40         private_resolve_plugin_t *this)
  41 {
  42         return "resolve";
  43 }
  44
  45 /**
  46  * Register handler
  47  */
  48 static bool plugin_cb(private_resolve_plugin_t *this,
  49                                           plugin_feature_t *feature, bool reg, void *cb_data)
  50 {
  51         if (reg)
  52         {
  53                 hydra->attributes->add_handler(hydra->attributes,
  54                                                                            &this->handler->handler);
  55         }
  56         else
  57         {
  58                 hydra->attributes->remove_handler(hydra->attributes,
  59                                                                                   &this->handler->handler);
  60         }
  61         return TRUE;
  62 }
  63
  64 METHOD(plugin_t, get_features, int,
  65         private_resolve_plugin_t *this, plugin_feature_t *features[])
  66 {
  67         static plugin_feature_t f[] = {
  68                 PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
  69                         PLUGIN_PROVIDE(CUSTOM, "resolve"),
  70         };
  71         *features = f;
  72         return countof(f);
  73 }
  74
  75 METHOD(plugin_t, destroy, void,
  76         private_resolve_plugin_t *this)
  77 {
  78         this->handler->destroy(this->handler);
  79         free(this);
  80 }
  81
  82 /*
  83  * see header file
  84  */
  85 plugin_t *resolve_plugin_create()
  86 {
  87         private_resolve_plugin_t *this;
  88
  89         INIT(this,
  90                 .public = {
  91                         .plugin = {
  92                                 .get_name = _get_name,
  93                                 .get_features = _get_features,
  94                                 .destroy = _destroy,
  95                         },
  96                 },
  97                 .handler = resolve_handler_create(),
  98         );
  99
 100         return &this->public.plugin;
 101 }