mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2026-09-02 00:28:36 +00:00
579 lines
20 KiB
C++
579 lines
20 KiB
C++
/*
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* Copyright (c) 2026, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#include <boost/version.hpp>
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#if !defined(ANDROID) && (BOOST_VERSION >= 108100) // boost::json since 1.75, we allow it since 1.81 due to std::string_view compatibility
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#include <boost/json.hpp>
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#define JSON_SUPPORTED
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#endif
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#include <boost/algorithm/hex.hpp>
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#include <vector>
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#include <array>
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#include <functional>
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#include "Log.h"
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#include "Torrents.h"
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#include "TorrentsTunnel.h"
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#include "TorrentsRPC.h"
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namespace i2p
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{
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namespace torrents
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{
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#ifdef JSON_SUPPORTED
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enum JSONRPCErrorCode
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{
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eMethodNotFound = -32601,
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eInvalidParam = -32602,
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eParseError = -32700
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};
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class JSONRPCHandler
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{
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public:
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JSONRPCHandler (std::shared_ptr<TorrentsTunnel> tunnel): m_Tunnel (tunnel) {};
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std::string HandleRequest (std::string_view request);
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private:
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std::string SuccessResponse (int64_t id, boost::json::object&& arguments);
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std::string ResultResponse (int64_t id, boost::json::object&& result);
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std::string ErrorResponse (JSONRPCErrorCode errorCode, int64_t id, std::string_view message);
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int64_t GetTag (boost::json::object& jsonRequest) const;
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static boost::json::value GetFieldValue (std::string_view field, std::shared_ptr<Torrent> torrent);
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boost::json::array GetPeers (std::shared_ptr<Torrent> torrent) const;
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boost::json::array GetTrackers (std::shared_ptr<Torrent> torrent) const;
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static std::string_view RecognizeClientByPeerID (const PeerConnection::PeerID& peerID);
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std::string HandleTorrentAdd (boost::json::object&& jsonRequest);
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std::string HandleTorrentRemove (boost::json::object&& jsonRequest);
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std::string HandleTorrentGet (boost::json::object&& jsonRequest);
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// https://github.com/transmission/transmission/blob/main/docs/rpc-spec.md#2-message-format
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std::string HandleSessionGet (boost::json::object&& jsonRequest); // for transmission-rpc library
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private:
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std::shared_ptr<TorrentsTunnel> m_Tunnel;
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};
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std::string JSONRPCHandler::SuccessResponse (int64_t id, boost::json::object&& arguments)
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{
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boost::json::object response;
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response["result"] = "success";
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response["arguments"] = arguments;
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if (id) response["id"] = id;
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return boost::json::serialize(response);
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}
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std::string JSONRPCHandler::ResultResponse (int64_t id, boost::json::object&& result)
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{
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boost::json::object response;
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response["jsonrpc"] = "2.0";
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response["result"] = result;
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if (id) response["id"] = id;
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return boost::json::serialize(response);
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}
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std::string JSONRPCHandler::ErrorResponse (JSONRPCErrorCode errorCode, int64_t id, std::string_view message)
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{
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boost::json::object response;
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response["jsonrpc"] = "2.0";
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if (id) response["id"] = id;
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boost::json::object error;
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error["code"] = errorCode;
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error["message"] = message;
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response["error"] = error;
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return boost::json::serialize(response);
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}
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int64_t JSONRPCHandler::GetTag (boost::json::object& jsonRequest) const
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{
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if (jsonRequest.contains ("tag"))
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return jsonRequest.at ("tag").as_int64 ();
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return 0;
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}
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std::string JSONRPCHandler::HandleRequest (std::string_view request)
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{
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try
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{
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auto jsonRequest = boost::json::parse (request).as_object ();
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auto method = jsonRequest.at ("method").as_string ();
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if (method == "torrent-add")
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return HandleTorrentAdd (std::move (jsonRequest));
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else if (method == "torrent-remove")
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return HandleTorrentRemove (std::move (jsonRequest));
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else if (method == "torrent-get")
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return HandleTorrentGet (std::move (jsonRequest));
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else if (method == "session-get")
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return HandleSessionGet( std::move (jsonRequest));
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else
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{
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LogPrint (eLogInfo, "TorrentsRPC: Method not found ", method);
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return ErrorResponse (eMethodNotFound, jsonRequest.at ("tag").as_int64 (), "Method not found");
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}
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}
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catch (const std::exception& ex)
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{
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LogPrint (eLogInfo, "TorrentsRPC: Failed to parse JSON: ", ex.what ());
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return ErrorResponse (eParseError, 0, "Parse error");
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}
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return "";
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}
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std::string JSONRPCHandler::HandleSessionGet (boost::json::object&& jsonRequest)
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{
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//todo // заглушка. наебываем систему тут, переделать потом на норм
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boost::json::object response, arguments;
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response["result"] = "success";
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response["version"] = "4.0.0";
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response["rpc-version"] = 17;
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arguments["version"] = "4.0.0"; // не нужно наверно
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response["arguments"] = arguments;
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response["tag"] = 0;
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return SuccessResponse (GetTag (jsonRequest), std::move (response));
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}
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std::string JSONRPCHandler::HandleTorrentAdd (boost::json::object&& jsonRequest)
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{
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auto arguments = jsonRequest.at ("arguments").as_object ();
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auto b64torrent = arguments.at ("metainfo").as_string ();
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std::string torrentFileContent;
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torrentFileContent.resize (boost::beast::detail::base64::decoded_size (b64torrent.size ()));
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boost::beast::detail::base64::decode (torrentFileContent.data (), b64torrent.data (), b64torrent.size ());
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auto [torrent, id] = m_Tunnel->AddTorrent (torrentFileContent);
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boost::json::object response, torrentInfo;
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if (torrent)
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{
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std::string hexHash;
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boost::algorithm::hex (torrent->GetInfoHash ().begin(), torrent->GetInfoHash ().end(), std::back_inserter(hexHash));
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torrentInfo["id"] = id;
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torrentInfo["hashString"] = hexHash;
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torrentInfo["name"] = torrent->GetName ();
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}
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if (id)
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{
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response["torrent-added"] = torrentInfo;
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LogPrint (eLogDebug, "TorrentsRPC: torrent added ", torrentInfo["name"].as_string ());
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}
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else
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{
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response["torrent-duplicate"] = torrentInfo;
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LogPrint (eLogDebug, "TorrentsRPC: duplicate torrent ", torrentInfo["name"].as_string ());
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}
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return SuccessResponse (GetTag (jsonRequest), std::move (response));
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}
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std::string JSONRPCHandler::HandleTorrentRemove (boost::json::object&& jsonRequest)
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{
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auto arguments = jsonRequest.at ("arguments").as_object ();
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bool deleteFiles = false;
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if (arguments.contains ("delete-local-data"))
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deleteFiles = arguments.at ("delete-local-data").as_bool ();
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std::vector<int> torrentIds;
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if (arguments.contains ("ids"))
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{
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auto ids = arguments.at ("ids");
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if (ids.is_array ())
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for (const auto& it: ids.as_array ())
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torrentIds.push_back (it.as_int64 ());
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else
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torrentIds.push_back (ids.as_int64 ());
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}
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for (auto id: torrentIds)
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m_Tunnel->RemoveTorrent (id, deleteFiles);
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boost::json::object response; // always empty
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return SuccessResponse (GetTag (jsonRequest), std::move (response));
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}
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std::string JSONRPCHandler::HandleTorrentGet (boost::json::object&& jsonRequest)
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{
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auto arguments = jsonRequest.at ("arguments").as_object ();
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std::vector<int> torrentIds;
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bool torrentsRequested = arguments.contains ("ids");
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if (torrentsRequested)
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{
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auto ids = arguments.at ("ids");
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if (ids.is_array ())
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for (const auto& it: ids.as_array ())
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torrentIds.push_back (it.as_int64 ());
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else
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torrentIds.push_back (ids.as_int64 ());
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}
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else
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torrentIds = m_Tunnel->GetTorrentIDs ();
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auto fields = arguments.at ("fields").as_array ();
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boost::json::object response;
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response["jsonrpc"] = "2.0";
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boost::json::array torrents;
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for (auto id: torrentIds)
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{
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auto torrent = m_Tunnel->FindTorrentByID (id);
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if (torrent)
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{
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boost::json::object t;
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t["id"] = id;
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for (const auto& field: fields)
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{
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if (field == "id")
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continue;
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else if (field == "peers")
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t["peers"] = GetPeers (torrent);
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else if (field == "trackers")
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t["trackers"] = GetTrackers (torrent);
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else
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{
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auto fieldValue = GetFieldValue (field.as_string (), torrent);
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if (!fieldValue.is_null ())
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t[field.as_string ()] = fieldValue;
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}
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}
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torrents.push_back (t);
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}
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}
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response["torrents"] = torrents;
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return ResultResponse (GetTag (jsonRequest), std::move (response));
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}
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boost::json::value JSONRPCHandler::GetFieldValue (std::string_view field, std::shared_ptr<Torrent> torrent)
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{
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const static std::map<std::string_view, std::function<boost::json::value (std::shared_ptr<Torrent>)> > fields =
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{
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{ "name", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetName ()); } },
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{ "status", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetStatus ()); } },
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{ "isFinished", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->IsComplete ()); } },
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{ "sizeWhenDone", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetLength ()); } },
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{ "leftUntilDone", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetLeft ()); } },
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{ "rateDownload", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetDownloadRate ()); } },
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{ "rateUpload", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetUploadRate ()); } },
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{ "peersGettingFromUs", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetNumUploadingToPeers ()); } },
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{ "peersSendingToUs", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetNumDownloadingFromPeers ()); } },
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{ "pieceCount", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetNumPieces ()); } },
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{ "pieceSize", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetPieceLength ()); } },
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{ "totalSize", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetLength ()); } },
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{ "percentDone", [](std::shared_ptr<Torrent> torrent)
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{
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if (!torrent->GetLength ()) return boost::json::value (1.0);
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return boost::json::value ((float)(torrent->GetLength () - torrent->GetLeft ())/(float)torrent->GetLength ());
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}
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},
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{ "hashString", [](std::shared_ptr<Torrent> torrent)
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{
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std::string hexHash;
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boost::algorithm::hex (torrent->GetInfoHash ().begin(), torrent->GetInfoHash ().end(), std::back_inserter(hexHash));
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return boost::json::value(hexHash);
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}
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},
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{ "pieces", [](std::shared_ptr<Torrent> torrent)
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{
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auto [bitfield, empry] = torrent->CreateBitfield ();
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std::string b64pieces;
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b64pieces.resize (boost::beast::detail::base64::encoded_size (bitfield.size()));
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boost::beast::detail::base64::encode (b64pieces.data (), bitfield.data(), bitfield.size());
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return boost::json::value(b64pieces);
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}
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},
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{ "files", [](std::shared_ptr<Torrent> torrent)
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{
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boost::json::array files;
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const auto& torrentFiles = torrent->GetFiles ();
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if (torrentFiles.empty ())
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{
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boost::json::object file;
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file["name"] = torrent->GetFullPath ().string ();
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file["length"] = torrent->GetLength ();
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file["bytesCompleted"] = torrent->GetLength () - torrent->GetLeft ();
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files.push_back (file);
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}
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else
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{
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auto filesCompleted = torrent->GetFilesCompleted ();
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size_t ind = 0;
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for (const auto& [filePath, fileSize]: torrentFiles)
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{
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boost::json::object file;
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file["name"] = filePath.string ();
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file["length"] = fileSize;
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file["bytesCompleted"] = (ind < filesCompleted.size ()) ? filesCompleted[ind] : 0;
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files.push_back (file);
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ind++;
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}
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}
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return files;
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}
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},
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{ "wanted", [](std::shared_ptr<Torrent> torrent)
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{
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boost::json::array wanted;
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size_t numFiles = torrent->GetFiles ().size ();
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if (!numFiles) numFiles = 1;
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wanted.resize (numFiles);
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std::fill (wanted.begin(), wanted.end(), 1);
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return wanted;
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}
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},
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{ "priorities", [](std::shared_ptr<Torrent> torrent)
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{
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boost::json::array priorities;
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size_t numFiles = torrent->GetFiles ().size ();
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if (!numFiles) numFiles = 1;
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priorities.resize (numFiles);
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std::fill (priorities.begin(), priorities.end(), 0);
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return priorities;
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}
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},
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{ "error", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(0); } }, // no error
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{ "eta", [](std::shared_ptr<Torrent> torrent)
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{
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auto downloadRate = torrent->GetDownloadRate ();
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return boost::json::value (downloadRate ? torrent->GetLeft ()/downloadRate : -2);
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}
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},
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{ "uploadRatio", [](std::shared_ptr<Torrent> torrent)
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{
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float ratio = torrent->GetDownloaded () ? ((float)torrent->GetUploaded ())/((float)torrent->GetDownloaded ()) : 100.0;
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return boost::json::value (ratio);
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}
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}
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};
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if (torrent)
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{
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auto it = fields.find (field);
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if (it != fields.end ())
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return it->second (torrent);
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}
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return boost::json::value ();
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}
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boost::json::array JSONRPCHandler::GetPeers (std::shared_ptr<Torrent> torrent) const
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{
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boost::json::array peers;
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std::list<std::shared_ptr<PeerConnection> > conns;
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boost::asio::post (m_Tunnel->GetService (),
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boost::asio::use_future ([tunnel = m_Tunnel, torrent, &conns]()
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{
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conns = tunnel->GetTorrentConnections (torrent);
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})).wait ();
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for (const auto& it: conns)
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{
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if (it->IsEstablished ())
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{
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boost::json::object peer;
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std::string flags;
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auto stream = it->GetStream ();
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bool isIncoming = stream ? stream->IsIncoming () : false;
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if (isIncoming) flags.push_back ('I');
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auto identHashStr = stream ? stream->GetRemoteIdentity ()->GetIdentHash ().ToBase64 () : "";
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peer["address"] = identHashStr.substr (0, 4);
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peer["port"] = TORRENT_PORT;
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peer["identHash"] = identHashStr;
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peer["clientName"] = it->GetRemoteName ().empty () ? RecognizeClientByPeerID (it->GetRemotePeerID ()) : it->GetRemoteName ();
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peer["isDowloadingFrom"] = it->IsDownloading ();
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peer["isUploading_to"] = it->IsUploading ();
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peer["rateToClient"] = it->GetDownloadRate ();
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peer["rateToPeer"] = it->GetUploadRate ();
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peer["isIncoming"] = isIncoming;
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peer["clientIsChoked"] = it->IsChoked ();
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peer["peerIsChoked"] = it->IsRemoteChoked ();
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peer["clientIsIntersted"] = it->IsInterested ();
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peer["peerIsInterested"] = it->IsRemoteInterested ();
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peer["flagStr"] = flags;
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peer["progress"] = torrent->GetLength () ? ((float)it->GetDownloaded ())/(float)(torrent->GetLength ()) : 1.0;
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peers.push_back (peer);
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}
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}
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return peers;
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}
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boost::json::array JSONRPCHandler::GetTrackers (std::shared_ptr<Torrent> torrent) const
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{
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boost::json::array trackers;
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const auto& tunnelTrackers = m_Tunnel->GetTrackers ();
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for (size_t i = 0; i < tunnelTrackers.size (); i++)
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{
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boost::json::object tracker;
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tracker["id"] = std::to_string (i);
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tracker["announce"] = tunnelTrackers[i];
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tracker["tier"] = 0;
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trackers.push_back (tracker);
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}
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return trackers;
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}
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std::string_view JSONRPCHandler::RecognizeClientByPeerID (const PeerConnection::PeerID& peerID)
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{
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static constexpr std::array<uint8_t,12> i2psnark { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03 };
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static const std::map<std::string_view, std::string_view> twoChars =
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{
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{ "qB", "qBittorrent" },
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{ "XD", "XD"},
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{ "BI", "BiglyBT" },
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{ "AZ", "Vuze" },
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{ "LT", "libtorrent" }
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};
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if (peerID.size () >= i2psnark.size () && !memcmp (peerID.data (), i2psnark.data (), i2psnark.size ()))
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return "I2PSnark";
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std::string_view peerIDStr ((const char *)peerID.data (), peerID.size ());
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if (peerIDStr.substr (0, 6) == "-I2PD-")
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return "i2pd";
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if (peerIDStr[0] == '-')
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{
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auto it = twoChars.find (peerIDStr.substr (1,2));
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if (it != twoChars.end ())
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return it->second;
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}
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return "Unknown";
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}
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#endif
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TorrentsRPCSession::TorrentsRPCSession (TorrentsRPCServer& server, boost::asio::ip::tcp::socket&& s):
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m_Server (server), m_Socket (std::move (s))
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{
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}
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void TorrentsRPCSession::ReceiveRequest ()
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{
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boost::beast::http::async_read (m_Socket, m_ReceiveBuffer, m_Request,
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boost::beast::bind_front_handler (&TorrentsRPCSession::HandleRequest, shared_from_this()));
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}
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void TorrentsRPCSession::HandleRequest (const boost::system::error_code& ecode, size_t bytes_transferred)
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{
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if (!ecode)
|
|
{
|
|
if (m_Request.method() == boost::beast::http::verb::post)
|
|
{
|
|
auto path = m_Request.target ();
|
|
auto tunnel = m_Server.GetTunnel ( {path.data (), path.size ()}); // boost::beast::string_view to std::string_view
|
|
if (tunnel)
|
|
{
|
|
if (m_Request[boost::beast::http::field::content_type] == "application/json" ||
|
|
m_Request[boost::beast::http::field::content_type] == "application/x-www-form-urlencoded")
|
|
{
|
|
#ifdef JSON_SUPPORTED
|
|
JSONRPCHandler jsonHandler (tunnel);
|
|
auto response = jsonHandler.HandleRequest (m_Request.body ());
|
|
if (!response.empty ())
|
|
SendResponse (boost::beast::http::status::ok, response);
|
|
#else
|
|
SendResponse (boost::beast::http::status::not_implemented, std::string ("Your boost version ") + BOOST_LIB_VERSION + " is too old");
|
|
#endif
|
|
}
|
|
else
|
|
SendResponse (boost::beast::http::status::no_content);
|
|
}
|
|
else {
|
|
LogPrint(eLogDebug, "TorrentRPC ", path, " not found ", tunnel);
|
|
SendResponse (boost::beast::http::status::not_found);
|
|
}
|
|
}
|
|
else if (m_Request.method() == boost::beast::http::verb::options)
|
|
SendResponse (boost::beast::http::status::no_content, "", true);
|
|
else
|
|
SendResponse (boost::beast::http::status::method_not_allowed);
|
|
}
|
|
}
|
|
|
|
void TorrentsRPCSession::SendResponse (boost::beast::http::status result, std::string_view data, bool isOptions)
|
|
{
|
|
m_Response.version (11); // HTTP/1.1
|
|
m_Response.result (result);
|
|
m_Response.set (boost::beast::http::field::server, "i2pd torents RPC");
|
|
m_Response.set (boost::beast::http::field::access_control_allow_origin, "*");
|
|
m_Response.set (boost::beast::http::field::access_control_allow_headers, "Content-Type, Authorization");
|
|
if (isOptions)
|
|
m_Response.set (boost::beast::http::field::access_control_allow_methods, "GET, POST, OPTIONS");
|
|
else
|
|
m_Response.set(boost::beast::http::field::content_type, (result == boost::beast::http::status::ok) ? "application/json; charset=UTF-8" : "text/plain");
|
|
m_Response.body () = data;
|
|
m_Response.prepare_payload ();
|
|
boost::beast::http::async_write (m_Socket, m_Response,
|
|
[s = shared_from_this ()](const boost::system::error_code& ecode, size_t bytes_transferred)
|
|
{
|
|
if (ecode)
|
|
LogPrint (eLogWarning, "TorrentsRPC: Failed to send response: ", ecode.message ());
|
|
});
|
|
}
|
|
|
|
TorrentsRPCServer::TorrentsRPCServer (std::string_view address, uint16_t port):
|
|
RunnableServiceWithWork ("TRPC"), m_Acceptor (GetService (),
|
|
boost::asio::ip::tcp::endpoint (boost::asio::ip::make_address (address), port))
|
|
{
|
|
}
|
|
|
|
void TorrentsRPCServer::Start ()
|
|
{
|
|
if (!IsRunning ())
|
|
{
|
|
StartIOService ();
|
|
Accept ();
|
|
}
|
|
}
|
|
|
|
void TorrentsRPCServer::Stop ()
|
|
{
|
|
if (IsRunning ())
|
|
{
|
|
m_Acceptor.cancel ();
|
|
StopIOService ();
|
|
}
|
|
}
|
|
|
|
void TorrentsRPCServer::AddTunnel (std::string_view path, std::shared_ptr<TorrentsTunnel> tunnel)
|
|
{
|
|
std::string rpcPath ("/");
|
|
if (!path.empty ())
|
|
rpcPath += std::string (path) + "/";
|
|
rpcPath += "rpc/";
|
|
m_Tunnels.emplace (rpcPath, tunnel);
|
|
}
|
|
|
|
std::pair<boost::asio::ip::tcp::endpoint, std::string> TorrentsRPCServer::GetTunnelEndpoint (std::shared_ptr<TorrentsTunnel> tunnel) const
|
|
{
|
|
for (const auto& [path, weakTunnel] : m_Tunnels)
|
|
{
|
|
if (auto t = weakTunnel.lock(); t == tunnel)
|
|
{
|
|
return { m_Acceptor.local_endpoint(), path };
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
std::shared_ptr<TorrentsTunnel> TorrentsRPCServer::GetTunnel (std::string_view path) const
|
|
{
|
|
auto it = m_Tunnels.find (path);
|
|
if (it != m_Tunnels.end ())
|
|
return it->second.lock ();
|
|
return nullptr;
|
|
}
|
|
|
|
void TorrentsRPCServer::Accept ()
|
|
{
|
|
m_Acceptor.async_accept (boost::asio::make_strand (GetService ()),
|
|
[this](const boost::system::error_code& ecode, boost::asio::ip::tcp::socket socket)
|
|
{
|
|
if (!ecode)
|
|
{
|
|
LogPrint (eLogDebug, "TorrentsRPC: Accepted incoming request");
|
|
auto session = std::make_shared<TorrentsRPCSession>(*this, std::move(socket));
|
|
session->ReceiveRequest ();
|
|
Accept ();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|