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