386 lines
10 KiB
C++
386 lines
10 KiB
C++
/*
|
|
|
|
Copyright (c) 2003-2014, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#ifndef TORRENT_TRACKER_MANAGER_HPP_INCLUDED
|
|
#define TORRENT_TRACKER_MANAGER_HPP_INCLUDED
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
#include <list>
|
|
#include <utility>
|
|
#include <ctime>
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(push, 1)
|
|
#endif
|
|
|
|
#include <boost/shared_ptr.hpp>
|
|
#include <boost/enable_shared_from_this.hpp>
|
|
#include <boost/cstdint.hpp>
|
|
#include <boost/weak_ptr.hpp>
|
|
#include <boost/tuple/tuple.hpp>
|
|
#include <boost/unordered_map.hpp>
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(pop)
|
|
#endif
|
|
|
|
#include "libtorrent/config.hpp"
|
|
#include "libtorrent/socket.hpp"
|
|
#include "libtorrent/address.hpp"
|
|
#include "libtorrent/peer_id.hpp"
|
|
#include "libtorrent/peer.hpp" // peer_entry
|
|
#include "libtorrent/deadline_timer.hpp"
|
|
#include "libtorrent/union_endpoint.hpp"
|
|
#include "libtorrent/udp_socket.hpp" // for udp_socket_observer
|
|
#include "libtorrent/session_settings.hpp"
|
|
#ifdef TORRENT_USE_OPENSSL
|
|
#include <boost/asio/ssl/context.hpp>
|
|
#endif
|
|
|
|
namespace libtorrent
|
|
{
|
|
struct request_callback;
|
|
class tracker_manager;
|
|
struct timeout_handler;
|
|
struct tracker_connection;
|
|
class udp_tracker_connection;
|
|
class http_tracker_connection;
|
|
class udp_socket;
|
|
struct resolver_interface;
|
|
struct counters;
|
|
namespace aux { struct session_impl; struct session_settings; }
|
|
|
|
// returns -1 if gzip header is invalid or the header size in bytes
|
|
TORRENT_EXTRA_EXPORT int gzip_header(const char* buf, int size);
|
|
|
|
struct TORRENT_EXTRA_EXPORT tracker_request
|
|
{
|
|
tracker_request()
|
|
: downloaded(-1)
|
|
, uploaded(-1)
|
|
, left(-1)
|
|
, corrupt(0)
|
|
, redundant(0)
|
|
, listen_port(0)
|
|
, event(none)
|
|
, kind(announce_request)
|
|
, key(0)
|
|
, num_want(0)
|
|
, send_stats(true)
|
|
, apply_ip_filter(true)
|
|
#ifdef TORRENT_USE_OPENSSL
|
|
, ssl_ctx(0)
|
|
#endif
|
|
{}
|
|
|
|
enum event_t
|
|
{
|
|
none,
|
|
completed,
|
|
started,
|
|
stopped,
|
|
paused
|
|
};
|
|
|
|
enum kind_t
|
|
{
|
|
announce_request,
|
|
scrape_request
|
|
};
|
|
|
|
std::string url;
|
|
std::string trackerid;
|
|
|
|
boost::int64_t downloaded;
|
|
boost::int64_t uploaded;
|
|
boost::int64_t left;
|
|
boost::int64_t corrupt;
|
|
boost::int64_t redundant;
|
|
boost::uint16_t listen_port;
|
|
|
|
// values from event_t
|
|
boost::uint8_t event;
|
|
|
|
// values from kind_t
|
|
boost::uint8_t kind;
|
|
|
|
boost::uint32_t key;
|
|
int num_want;
|
|
sha1_hash info_hash;
|
|
peer_id pid;
|
|
address bind_ip;
|
|
|
|
bool send_stats;
|
|
bool apply_ip_filter;
|
|
#ifdef TORRENT_USE_OPENSSL
|
|
boost::asio::ssl::context* ssl_ctx;
|
|
#endif
|
|
};
|
|
|
|
struct tracker_response
|
|
{
|
|
tracker_response()
|
|
: interval(1800)
|
|
, min_interval(120)
|
|
, complete(-1)
|
|
, incomplete(-1)
|
|
, downloaders(-1)
|
|
, downloaded(-1)
|
|
{}
|
|
|
|
// peers from the tracker, in various forms
|
|
std::vector<peer_entry> peers;
|
|
std::vector<ipv4_peer_entry> peers4;
|
|
#if TORRENT_USE_IPV6
|
|
std::vector<ipv6_peer_entry> peers6;
|
|
#endif
|
|
// our external IP address (if the tracker responded with ti, otherwise
|
|
// INADDR_ANY)
|
|
address external_ip;
|
|
|
|
// the tracker id, if it was included in the response, otherwise
|
|
// an empty string
|
|
std::string trackerid;
|
|
|
|
// if the tracker returned an error, this is set to that error
|
|
std::string failure_reason;
|
|
|
|
// contains a warning message from the tracker, if included in
|
|
// the response
|
|
std::string warning_message;
|
|
|
|
// re-announce interval, in seconds
|
|
int interval;
|
|
|
|
// the lowest force-announce interval
|
|
int min_interval;
|
|
|
|
// the number of seeds in the swarm
|
|
int complete;
|
|
|
|
// the number of downloaders in the swarm
|
|
int incomplete;
|
|
|
|
// if supported by the tracker, the number of actively downloading peers.
|
|
// i.e. partial seeds. If not suppored, -1
|
|
int downloaders;
|
|
|
|
// the number of times the torrent has been downloaded
|
|
int downloaded;
|
|
};
|
|
|
|
struct TORRENT_EXTRA_EXPORT request_callback
|
|
{
|
|
friend class tracker_manager;
|
|
request_callback() {}
|
|
virtual ~request_callback() {}
|
|
virtual void tracker_warning(tracker_request const& req
|
|
, std::string const& msg) = 0;
|
|
virtual void tracker_scrape_response(tracker_request const& /*req*/
|
|
, int /*complete*/, int /*incomplete*/, int /*downloads*/
|
|
, int /*downloaders*/) {}
|
|
virtual void tracker_response(
|
|
tracker_request const& req
|
|
, address const& tracker_ip
|
|
, std::list<address> const& ip_list
|
|
, struct tracker_response const& response) = 0;
|
|
virtual void tracker_request_error(
|
|
tracker_request const& req
|
|
, int response_code
|
|
, error_code const& ec
|
|
, const std::string& msg
|
|
, int retry_interval) = 0;
|
|
|
|
#if defined TORRENT_LOGGING
|
|
virtual void debug_log(const char* fmt, ...) const = 0;
|
|
#endif
|
|
};
|
|
|
|
struct TORRENT_EXTRA_EXPORT timeout_handler
|
|
: boost::enable_shared_from_this<timeout_handler>
|
|
, boost::noncopyable
|
|
{
|
|
timeout_handler(io_service& str);
|
|
|
|
void set_timeout(int completion_timeout, int read_timeout);
|
|
void restart_read_timeout();
|
|
void cancel();
|
|
bool cancelled() const { return m_abort; }
|
|
|
|
virtual void on_timeout(error_code const& ec) = 0;
|
|
virtual ~timeout_handler() {}
|
|
|
|
io_service& get_io_service() { return m_timeout.get_io_service(); }
|
|
|
|
private:
|
|
|
|
void timeout_callback(error_code const&);
|
|
|
|
int m_completion_timeout;
|
|
|
|
typedef mutex mutex_t;
|
|
mutable mutex_t m_mutex;
|
|
|
|
// used for timeouts
|
|
// this is set when the request has been sent
|
|
ptime m_start_time;
|
|
|
|
// this is set every time something is received
|
|
ptime m_read_time;
|
|
|
|
// the asio async operation
|
|
deadline_timer m_timeout;
|
|
|
|
int m_read_timeout;
|
|
|
|
bool m_abort;
|
|
};
|
|
|
|
// TODO: 2 this class probably doesn't need to have virtual functions.
|
|
struct TORRENT_EXTRA_EXPORT tracker_connection
|
|
: timeout_handler
|
|
{
|
|
tracker_connection(tracker_manager& man
|
|
, tracker_request const& req
|
|
, io_service& ios
|
|
, boost::weak_ptr<request_callback> r);
|
|
|
|
void update_transaction_id(boost::shared_ptr<udp_tracker_connection> c
|
|
, boost::uint64_t tid);
|
|
|
|
boost::shared_ptr<request_callback> requester() const;
|
|
virtual ~tracker_connection() {}
|
|
|
|
tracker_request const& tracker_req() const { return m_req; }
|
|
|
|
void fail(error_code const& ec, int code = -1, char const* msg = ""
|
|
, int interval = 0, int min_interval = 0);
|
|
virtual void start() = 0;
|
|
virtual void close();
|
|
address const& bind_interface() const { return m_req.bind_ip; }
|
|
void sent_bytes(int bytes);
|
|
void received_bytes(int bytes);
|
|
virtual bool on_receive(error_code const&, udp::endpoint const&
|
|
, char const* /* buf */, int /* size */) { return false; }
|
|
virtual bool on_receive_hostname(error_code const&
|
|
, char const* /* hostname */
|
|
, char const* /* buf */, int /* size */) { return false; }
|
|
|
|
boost::shared_ptr<tracker_connection> shared_from_this()
|
|
{
|
|
return boost::static_pointer_cast<tracker_connection>(
|
|
timeout_handler::shared_from_this());
|
|
}
|
|
|
|
private:
|
|
|
|
const tracker_request m_req;
|
|
|
|
protected:
|
|
|
|
void fail_impl(error_code const& ec, int code = -1, std::string msg = std::string()
|
|
, int interval = 0, int min_interval = 0);
|
|
|
|
boost::weak_ptr<request_callback> m_requester;
|
|
|
|
tracker_manager& m_man;
|
|
};
|
|
|
|
class TORRENT_EXTRA_EXPORT tracker_manager
|
|
: public udp_socket_observer
|
|
, boost::noncopyable
|
|
{
|
|
public:
|
|
|
|
tracker_manager(aux::session_impl& ses);
|
|
~tracker_manager();
|
|
|
|
void queue_request(
|
|
io_service& ios
|
|
, tracker_request r
|
|
, std::string const& auth
|
|
, boost::weak_ptr<request_callback> c
|
|
= boost::weak_ptr<request_callback>());
|
|
void abort_all_requests(bool all = false);
|
|
|
|
void remove_request(tracker_connection const*);
|
|
bool empty() const;
|
|
int num_requests() const;
|
|
|
|
void sent_bytes(int bytes);
|
|
void received_bytes(int bytes);
|
|
|
|
virtual bool incoming_packet(error_code const& e, udp::endpoint const& ep
|
|
, char const* buf, int size);
|
|
|
|
// this is only used for SOCKS packets, since
|
|
// they may be addressed to hostname
|
|
virtual bool incoming_packet(error_code const& e, char const* hostname
|
|
, char const* buf, int size);
|
|
|
|
void update_transaction_id(
|
|
boost::shared_ptr<udp_tracker_connection> c
|
|
, boost::uint64_t tid);
|
|
|
|
aux::session_settings const& settings() const { return m_settings; }
|
|
class udp_socket& udp_socket() { return m_udp_socket; }
|
|
struct ip_filter const& ip_filter() const { return m_ip_filter; }
|
|
resolver_interface& host_resolver() { return m_host_resolver; }
|
|
|
|
private:
|
|
|
|
typedef mutex mutex_t;
|
|
mutable mutex_t m_mutex;
|
|
|
|
// maps transactionid to the udp_tracker_connection
|
|
// TODO: 2 this should be unique_ptr in the future
|
|
typedef boost::unordered_map<boost::uint32_t, boost::shared_ptr<udp_tracker_connection> > udp_conns_t;
|
|
udp_conns_t m_udp_conns;
|
|
|
|
typedef std::vector<boost::shared_ptr<http_tracker_connection> > http_conns_t;
|
|
http_conns_t m_http_conns;
|
|
|
|
aux::session_impl& m_ses;
|
|
|
|
struct ip_filter const& m_ip_filter;
|
|
class udp_socket& m_udp_socket;
|
|
resolver_interface& m_host_resolver;
|
|
aux::session_settings const& m_settings;
|
|
counters& m_stats_counters;
|
|
bool m_abort;
|
|
};
|
|
}
|
|
|
|
#endif // TORRENT_TRACKER_MANAGER_HPP_INCLUDED
|
|
|