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/*
This file is part of GNUnet.
Copyright (C) 2012 Christian Grothoff
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file vpn/vpn.h
* @brief IPC messages between VPN library and VPN service
* @author Christian Grothoff
*/
#ifndef VPN_H
#define VPN_H
#include "gnunet_util_lib.h"
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Message send by the VPN client to the VPN service requesting
* the setup of a redirection from some IP via an exit node to
* some global Internet address.
*/
struct RedirectToIpRequestMessage
{
/**
* Type is #GNUNET_MESSAGE_TYPE_VPN_CLIENT_REDIRECT_TO_IP
*/
struct GNUNET_MessageHeader header;
/**
* Always zero.
*/
uint32_t reserved GNUNET_PACKED;
/**
* How long should the redirection be maintained at most?
*/
struct GNUNET_TIME_AbsoluteNBO expiration_time;
/**
* Address family desired for the result (AF_INET or AF_INET6 or AF_UNSPEC, in nbo)
*/
int32_t result_af GNUNET_PACKED;
/**
* Address family used for the destination address (AF_INET or AF_INET6, in nbo)
*/
int32_t addr_af GNUNET_PACKED;
/**
* Unique ID to match a future response to this request.
* Picked by the client.
*/
uint64_t request_id GNUNET_PACKED;
/* followed by destination address ('struct in_addr' or 'struct in6_addr') */
};
/**
* Message send by the VPN client to the VPN service requesting
* the setup of a redirection from some IP to a service running
* at a particular peer.
*/
struct RedirectToServiceRequestMessage
{
/**
* Type is #GNUNET_MESSAGE_TYPE_VPN_CLIENT_REDIRECT_TO_SERVICE
*/
struct GNUNET_MessageHeader header;
/**
* Always zero.
*/
uint32_t reserved GNUNET_PACKED;
/**
* How long should the redirection be maintained at most?
*/
struct GNUNET_TIME_AbsoluteNBO expiration_time;
/**
* Desired protocol (IPPROTO_UDP or IPPROTO_TCP)
*/
int32_t protocol GNUNET_PACKED;
/**
* Address family desired for the result (AF_INET or AF_INET6 or AF_UNSPEC, in nbo)
*/
int32_t result_af GNUNET_PACKED;
/**
* Target peer offering the service.
*/
struct GNUNET_PeerIdentity target;
/**
* Service descriptor identifying the service.
*/
struct GNUNET_HashCode service_descriptor;
/**
* Unique ID to match a future response to this request.
* Picked by the client.
*/
uint64_t request_id GNUNET_PACKED;
};
/**
* Response from the VPN service to a VPN client informing about
* the IP that was assigned for the requested redirection.
*/
struct RedirectToIpResponseMessage
{
/**
* Type is #GNUNET_MESSAGE_TYPE_VPN_CLIENT_USE_IP
*/
struct GNUNET_MessageHeader header;
/**
* Address family of the allocated address that follows; will match
* "result_af" from the request, of be "AF_UNSPEC" on errors.
*/
int32_t result_af GNUNET_PACKED;
/**
* Unique ID to match the response to a request.
*/
uint64_t request_id GNUNET_PACKED;
/* followed by destination address ('struct in_addr' or 'struct in6_addr') */
};
GNUNET_NETWORK_STRUCT_END
#endif
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