src/libcharon/plugins/dhcp/dhcp_plugin.c

   1 /*
   2  * Copyright (C) 2010 Martin Willi
   3  * Copyright (C) 2010 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 "dhcp_plugin.h"
  17
  18 #include <hydra.h>
  19 #include <daemon.h>
  20
  21 #include "dhcp_socket.h"
  22 #include "dhcp_provider.h"
  23
  24 typedef struct private_dhcp_plugin_t private_dhcp_plugin_t;
  25
  26 /**
  27  * private data of dhcp plugin
  28  */
  29 struct private_dhcp_plugin_t {
  30
  31         /**
  32          * implements plugin interface
  33          */
  34         dhcp_plugin_t public;
  35
  36         /**
  37          * DHCP communication socket
  38          */
  39         dhcp_socket_t *socket;
  40
  41         /**
  42          * Attribute provider
  43          */
  44         dhcp_provider_t *provider;
  45 };
  46
  47 METHOD(plugin_t, destroy, void,
  48         private_dhcp_plugin_t *this)
  49 {
  50         hydra->attributes->remove_provider(hydra->attributes,
  51                                                                            &this->provider->provider);
  52         this->provider->destroy(this->provider);
  53         this->socket->destroy(this->socket);
  54         free(this);
  55 }
  56
  57 /**
  58  * Plugin constructor.
  59  */
  60 plugin_t *dhcp_plugin_create()
  61 {
  62         private_dhcp_plugin_t *this;
  63
  64         INIT(this,
  65                 .public.plugin.destroy = _destroy,
  66                 .socket = dhcp_socket_create(),
  67         );
  68
  69         if (!this->socket)
  70         {
  71                 free(this);
  72                 return NULL;
  73         }
  74
  75         this->provider = dhcp_provider_create(this->socket);
  76         hydra->attributes->add_provider(hydra->attributes,
  77                                                                         &this->provider->provider);
  78
  79         return &this->public.plugin;
  80 }
  81