src/libcharon/plugins/duplicheck/duplicheck_plugin.c

   1 /*
   2  * Copyright (C) 2011 Martin Willi
   3  * Copyright (C) 2011 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 "duplicheck_plugin.h"
  17
  18 #include "duplicheck_notify.h"
  19 #include "duplicheck_listener.h"
  20
  21 #include <daemon.h>
  22
  23 typedef struct private_duplicheck_plugin_t private_duplicheck_plugin_t;
  24
  25 /**
  26  * Private data of duplicheck plugin
  27  */
  28 struct private_duplicheck_plugin_t {
  29
  30         /**
  31          * Implements plugin interface
  32          */
  33         duplicheck_plugin_t public;
  34
  35         /**
  36          * Listener doing duplicate checks
  37          */
  38         duplicheck_listener_t *listener;
  39
  40         /**
  41          * Notification sender facility
  42          */
  43         duplicheck_notify_t *notify;
  44 };
  45
  46 METHOD(plugin_t, get_name, char*,
  47         private_duplicheck_plugin_t *this)
  48 {
  49         return "duplicheck";
  50 }
  51
  52 METHOD(plugin_t, destroy, void,
  53         private_duplicheck_plugin_t *this)
  54 {
  55         charon->bus->remove_listener(charon->bus, &this->listener->listener);
  56         this->notify->destroy(this->notify);
  57         this->listener->destroy(this->listener);
  58         free(this);
  59 }
  60
  61 /**
  62  * Plugin constructor
  63  */
  64 plugin_t *duplicheck_plugin_create()
  65 {
  66         private_duplicheck_plugin_t *this;
  67
  68         if (!lib->settings->get_bool(lib->settings,
  69                                                                  "charon.plugins.duplicheck.enabled", TRUE))
  70         {
  71                 return NULL;
  72         }
  73
  74         INIT(this,
  75                 .public = {
  76                         .plugin = {
  77                                 .get_name = _get_name,
  78                                 .reload = (void*)return_false,
  79                                 .destroy = _destroy,
  80                         },
  81                 },
  82                 .notify = duplicheck_notify_create(),
  83         );
  84
  85         if (!this->notify)
  86         {
  87                 free(this);
  88                 return NULL;
  89         }
  90         this->listener = duplicheck_listener_create(this->notify);
  91         charon->bus->add_listener(charon->bus, &this->listener->listener);
  92
  93         return &this->public.plugin;
  94 }