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/*
This file is part of GNUnet.
(C) 2010 Christian Grothoff
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file vpn/gnunet-daemon-vpn-dns.h
* @brief
* @author Philipp Toelke
*/
#ifndef GNUNET_DAEMON_VPN_DNS_H
#define GNUNET_DAEMON_VPN_DNS_H
/**
* a list of outgoing dns-query-packets
*/
extern struct query_packet_list *head;
/**
* The last element of the list of outgoing dns-query-packets
*/
extern struct query_packet_list *tail;
/**
* Callback called by notify_transmit_ready; sends dns-queries or rehijack-messages
* to the service-dns
*/
size_t send_query(void* cls, size_t size, void* buf);
/**
* Connect to the service-dns
*/
void connect_to_service_dns (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
* This receives packets from the service-dns and schedules process_answer to
* handle it
*/
void dns_answer_handler(void* cls, const struct GNUNET_MessageHeader *msg);
/**
* The connection to the service-dns
*/
extern struct GNUNET_CLIENT_Connection *dns_connection;
/**
* A flag to show that the service-dns has to rehijack the outbound dns-packets
*
* This gets set when the helper restarts as the routing-tables are flushed when
* the interface vanishes.
*/
extern unsigned char restart_hijack;
/**
* A list of processed dns-responses.
*
* "processed" means that the packet is complete and can be sent out via udp
* directly
*/
extern struct answer_packet_list *answer_proc_head;
/**
* The last element of the list of processed dns-responses.
*/
extern struct answer_packet_list *answer_proc_tail;
extern GNUNET_SCHEDULER_TaskIdentifier conn_task;
#endif /* end of include guard: GNUNET-DAEMON-VPN-DNS_H */
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