119 lines
4.5 KiB
C
119 lines
4.5 KiB
C
/*
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* Copyright (C) Ambroz Bizjak <ambrop7@gmail.com>
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* Contributions:
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* Transparent DNS: Copyright (C) Kerem Hadimli <kerem.hadimli@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef BADVPN_UDPGW_CLIENT_UDPGWCLIENT_H
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#define BADVPN_UDPGW_CLIENT_UDPGWCLIENT_H
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#include <stdint.h>
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#include <protocol/udpgw_proto.h>
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#include <misc/debug.h>
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#include <misc/packed.h>
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#include <structure/BAVL.h>
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#include <structure/LinkedList1.h>
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#include <base/DebugObject.h>
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#include <system/BAddr.h>
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#include <base/BPending.h>
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#include <flow/PacketPassFairQueue.h>
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#include <flow/PacketStreamSender.h>
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#include <flow/PacketProtoFlow.h>
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#include <flow/PacketProtoDecoder.h>
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#include <flow/PacketPassConnector.h>
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#include <flowextra/PacketPassInactivityMonitor.h>
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typedef void (*UdpGwClient_handler_servererror) (void *user);
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typedef void (*UdpGwClient_handler_received) (void *user, BAddr local_addr, BAddr remote_addr, const uint8_t *data, int data_len);
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B_START_PACKED
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struct UdpGwClient__keepalive_packet {
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struct packetproto_header pp;
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struct udpgw_header udpgw;
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} B_PACKED;
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B_END_PACKED
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typedef struct {
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int udp_mtu;
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int max_connections;
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int send_buffer_size;
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btime_t keepalive_time;
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BReactor *reactor;
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void *user;
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UdpGwClient_handler_servererror handler_servererror;
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UdpGwClient_handler_received handler_received;
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int udpgw_mtu;
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int pp_mtu;
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BAVL connections_tree_by_conaddr;
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BAVL connections_tree_by_conid;
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LinkedList1 connections_list;
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int num_connections;
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int next_conid;
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PacketPassFairQueue send_queue;
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PacketPassInactivityMonitor send_monitor;
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PacketPassConnector send_connector;
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struct UdpGwClient__keepalive_packet keepalive_packet;
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PacketPassInterface *keepalive_if;
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PacketPassFairQueueFlow keepalive_qflow;
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int keepalive_sending;
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int have_server;
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PacketStreamSender send_sender;
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PacketProtoDecoder recv_decoder;
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PacketPassInterface recv_if;
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DebugObject d_obj;
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} UdpGwClient;
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struct UdpGwClient_conaddr {
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BAddr local_addr;
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BAddr remote_addr;
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};
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struct UdpGwClient_connection {
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UdpGwClient *client;
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struct UdpGwClient_conaddr conaddr;
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uint8_t first_flags;
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const uint8_t *first_data;
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int first_data_len;
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uint16_t conid;
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BPending first_job;
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BufferWriter *send_if;
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PacketProtoFlow send_ppflow;
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PacketPassFairQueueFlow send_qflow;
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BAVLNode connections_tree_by_conaddr_node;
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BAVLNode connections_tree_by_conid_node;
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LinkedList1Node connections_list_node;
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};
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int UdpGwClient_Init (UdpGwClient *o, int udp_mtu, int max_connections, int send_buffer_size, btime_t keepalive_time, BReactor *reactor, void *user,
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UdpGwClient_handler_servererror handler_servererror,
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UdpGwClient_handler_received handler_received) WARN_UNUSED;
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void UdpGwClient_Free (UdpGwClient *o);
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void UdpGwClient_SubmitPacket (UdpGwClient *o, BAddr local_addr, BAddr remote_addr, int is_dns, const uint8_t *data, int data_len);
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int UdpGwClient_ConnectServer (UdpGwClient *o, StreamPassInterface *send_if, StreamRecvInterface *recv_if) WARN_UNUSED;
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void UdpGwClient_DisconnectServer (UdpGwClient *o);
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#endif
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