1 /* 2 3 Copyright (c) 2012-2018, Arvid Norberg 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions 8 are met: 9 10 * Redistributions of source code must retain the above copyright 11 notice, this list of conditions and the following disclaimer. 12 * Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in 14 the documentation and/or other materials provided with the distribution. 15 * Neither the name of the author nor the names of its 16 contributors may be used to endorse or promote products derived 17 from this software without specific prior written permission. 18 19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 23 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 POSSIBILITY OF SUCH DAMAGE. 30 31 */ 32 33 #ifndef DHT_OBSERVER_HPP 34 #define DHT_OBSERVER_HPP 35 36 #include "libtorrent/config.hpp" 37 #include "libtorrent/address.hpp" 38 #include "libtorrent/string_view.hpp" 39 #include "libtorrent/kademlia/msg.hpp" 40 #include "libtorrent/aux_/session_udp_sockets.hpp" // for transport 41 42 namespace libtorrent { 43 44 class entry; 45 46 namespace aux { struct listen_socket_handle; } 47 48 namespace dht { 49 50 struct TORRENT_EXTRA_EXPORT dht_logger 51 { 52 #ifndef TORRENT_DISABLE_LOGGING 53 enum module_t 54 { 55 tracker, 56 node, 57 routing_table, 58 rpc_manager, 59 traversal 60 }; 61 62 enum message_direction_t 63 { 64 incoming_message, 65 outgoing_message 66 }; 67 68 virtual bool should_log(module_t m) const = 0; 69 virtual void log(module_t m, char const* fmt, ...) TORRENT_FORMAT(3,4) = 0; 70 virtual void log_packet(message_direction_t dir, span<char const> pkt 71 , udp::endpoint const& node) = 0; 72 #endif 73 74 protected: 75 ~dht_logger() = default; 76 }; 77 78 struct TORRENT_EXTRA_EXPORT dht_observer : dht_logger 79 { 80 virtual void set_external_address(aux::listen_socket_handle const& iface 81 , address const& addr, address const& source) = 0; 82 virtual int get_listen_port(aux::transport ssl, aux::listen_socket_handle const& s) = 0; 83 virtual void get_peers(sha1_hash const& ih) = 0; 84 virtual void outgoing_get_peers(sha1_hash const& target 85 , sha1_hash const& sent_target, udp::endpoint const& ep) = 0; 86 virtual void announce(sha1_hash const& ih, address const& addr, int port) = 0; 87 virtual bool on_dht_request(string_view query 88 , dht::msg const& request, entry& response) = 0; 89 90 protected: 91 ~dht_observer() = default; 92 }; 93 }} 94 95 #endif 96