635 lines
19 KiB
C++
635 lines
19 KiB
C++
/*
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This file is part of Telegram Desktop,
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an unofficial desktop messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014 John Preston, https://tdesktop.com
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*/
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#include "stdafx.h"
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#include "mtp.h"
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namespace {
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typedef QMap<int32, MTProtoSessionPtr> Sessions;
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Sessions sessions;
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MTProtoSessionPtr mainSession;
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typedef QMap<mtpRequestId, int32> RequestsByDC; // holds dc for request to this dc or -dc for request to main dc
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RequestsByDC requestsByDC;
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QMutex requestByDCLock;
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typedef QMap<mtpRequestId, int32> AuthExportRequests; // holds target dc for auth export request
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AuthExportRequests authExportRequests;
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bool started = false;
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uint32 layer;
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typedef QMap<mtpRequestId, RPCResponseHandler> ParserMap;
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ParserMap parserMap;
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typedef QMap<mtpRequestId, mtpRequest> RequestMap;
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RequestMap requestMap;
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typedef QPair<mtpRequestId, uint64> DelayedRequest;
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typedef QList<DelayedRequest> DelayedRequestsList;
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DelayedRequestsList delayedRequests;
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typedef QVector<mtpRequestId> DCAuthWaiters;
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typedef QMap<int32, DCAuthWaiters> AuthWaiters;
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AuthWaiters authWaiters;
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QMutex toClearLock;
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RPCCallbackClears toClear;
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RPCResponseHandler globalHandler;
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MTPStateChangedHandler stateChangedHandler = 0;
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MTPSessionResetHandler sessionResetHandler = 0;
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_mtp_internal::RequestResender *resender = 0;
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mtpAuthKey _localKey;
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void importDone(const MTPauth_Authorization &result, mtpRequestId req) {
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::iterator i = requestsByDC.find(req);
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if (i == requestsByDC.end()) {
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LOG(("MTP Error: auth import request not found in requestsByDC, requestId: %1").arg(req));
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RPCError error(rpcClientError("AUTH_IMPORT_FAIL", QString("did not find import request in requestsByDC, request %1").arg(req)));
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if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
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return;
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}
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int32 newdc = i.value();
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DEBUG_LOG(("MTP Info: auth import to dc %1 succeeded").arg(newdc));
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DCAuthWaiters &waiters(authWaiters[newdc]);
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MTProtoSessionPtr session(_mtp_internal::getSession(newdc));
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if (waiters.size()) {
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for (DCAuthWaiters::iterator i = waiters.begin(), e = waiters.end(); i != e; ++i) {
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mtpRequestId requestId = *i;
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RequestMap::const_iterator j = requestMap.constFind(requestId);
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if (j == requestMap.cend()) {
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LOG(("MTP Error: could not find request %1 for resending").arg(requestId));
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continue;
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}
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{
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RequestsByDC::iterator k = requestsByDC.find(requestId);
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if (k == requestsByDC.cend()) {
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LOG(("MTP Error: could not find request %1 by dc for resending").arg(requestId));
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continue;
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}
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if (k.value() < 0) {
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MTP::setdc(newdc);
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k.value() = -newdc;
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} else {
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k.value() = k.value() - (k.value() % _mtp_internal::dcShift) + newdc;
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}
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DEBUG_LOG(("MTP Info: resending request %1 to dc %2 after import auth").arg(requestId).arg(k.value()));
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}
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session->sendPrepared(j.value());
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}
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waiters.clear();
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}
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}
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bool importFail(const RPCError &error, mtpRequestId req) {
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if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth import failed
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return true;
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}
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void exportDone(const MTPauth_ExportedAuthorization &result, mtpRequestId req) {
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AuthExportRequests::const_iterator i = authExportRequests.constFind(req);
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if (i == authExportRequests.cend()) {
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LOG(("MTP Error: auth export request target dc not found, requestId: %1").arg(req));
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RPCError error(rpcClientError("AUTH_IMPORT_FAIL", QString("did not find target dc, request %1").arg(req)));
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if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
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return;
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}
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const MTPDauth_exportedAuthorization &data(result.c_auth_exportedAuthorization());
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MTP::send(MTPauth_ImportAuthorization(data.vid, data.vbytes), rpcDone(importDone), rpcFail(importFail), i.value());
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authExportRequests.remove(req);
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}
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bool exportFail(const RPCError &error, mtpRequestId req) {
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AuthExportRequests::const_iterator i = authExportRequests.constFind(req);
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if (i != authExportRequests.cend()) {
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authWaiters[i.value()].clear();
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}
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if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
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return true;
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}
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bool onErrorDefault(mtpRequestId requestId, const RPCError &error) {
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const QString &err(error.type());
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QRegularExpressionMatch m;
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if ((m = QRegularExpression("^(FILE|PHONE|NETWORK|USER)_MIGRATE_(\\d+)$").match(err)).hasMatch()) {
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if (!requestId) return false;
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int32 dc = 0, newdc = m.captured(2).toInt();
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{
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::iterator i = requestsByDC.find(requestId);
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if (i == requestsByDC.end()) {
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LOG(("MTP Error: could not find request %1 for migrating to %2").arg(requestId).arg(newdc));
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} else {
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dc = i.value();
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}
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}
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if (!dc || !newdc) return false;
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DEBUG_LOG(("MTP Info: changing request %1 dc%2 to %3").arg(requestId).arg((dc > 0) ? "" : " and main dc").arg(newdc));
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if (dc < 0) {
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if (MTP::authedId()) { // import auth, set dc and resend
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DEBUG_LOG(("MTP Info: importing auth to dc %1").arg(newdc));
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DCAuthWaiters &waiters(authWaiters[newdc]);
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if (!waiters.size()) {
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authExportRequests.insert(MTP::send(MTPauth_ExportAuthorization(MTP_int(newdc)), rpcDone(exportDone), rpcFail(exportFail)), newdc);
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}
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waiters.push_back(requestId);
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return true;
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} else {
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MTP::setdc(newdc);
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}
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}
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RequestMap::const_iterator i = requestMap.constFind(requestId);
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if (i == requestMap.cend()) {
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LOG(("MTP Error: could not find request %1").arg(requestId));
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return false;
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}
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_mtp_internal::registerRequest(requestId, (dc < 0) ? -newdc : newdc);
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_mtp_internal::getSession(newdc)->sendPrepared(i.value());
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return true;
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} else if ((m = QRegularExpression("^FLOOD_WAIT_(\\d+)$").match(err)).hasMatch()) {
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if (!requestId) return false;
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int32 secs = m.captured(1).toInt();
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uint64 sendAt = getms() + secs * 1000 + 10;
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DelayedRequestsList::iterator i = delayedRequests.begin(), e = delayedRequests.end();
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for (; i != e; ++i) {
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if (i->first == requestId) return true;
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if (i->second > sendAt) break;
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}
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delayedRequests.insert(i, DelayedRequest(requestId, sendAt));
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if (resender) resender->checkDelayed();
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return true;
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} else if (error.code() == 401) {
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int32 dc = 0;
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{
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::iterator i = requestsByDC.find(requestId);
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if (i != requestsByDC.end()) {
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dc = i.value();
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} else {
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LOG(("MTP Error: unauthorized request without dc info, requestId %1").arg(requestId));
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}
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}
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int32 newdc = abs(dc) % _mtp_internal::dcShift;
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if (!newdc || newdc == mtpMainDC() || !MTP::authedId()) {
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if (globalHandler.onFail) (*globalHandler.onFail)(requestId, error); // auth failed in main dc
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return false;
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}
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DEBUG_LOG(("MTP Info: importing auth to dc %1").arg(dc));
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DCAuthWaiters &waiters(authWaiters[newdc]);
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if (!waiters.size()) {
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authExportRequests.insert(MTP::send(MTPauth_ExportAuthorization(MTP_int(newdc)), rpcDone(exportDone), rpcFail(exportFail)), newdc);
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}
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waiters.push_back(requestId);
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return true;
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} else if (err == qsl("CONNECTION_NOT_INITED") || err == qsl("CONNECTION_LAYER_INVALID")) {
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RequestMap::const_iterator i = requestMap.constFind(requestId);
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if (i == requestMap.cend()) {
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LOG(("MTP Error: could not find request %1").arg(requestId));
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return false;
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}
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int32 dc = 0;
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{
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::iterator i = requestsByDC.find(requestId);
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if (i == requestsByDC.end()) {
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LOG(("MTP Error: could not find request %1 for resending with init connection").arg(requestId));
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} else {
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dc = i.value();
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}
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}
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if (!dc) return false;
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_mtp_internal::getSession(dc < 0 ? (-dc) : dc)->sendPreparedWithInit(i.value());
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return true;
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}
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return false;
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}
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}
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namespace _mtp_internal {
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MTProtoSessionPtr getSession(int32 dc) {
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if (!started) return MTProtoSessionPtr();
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if (!dc) return mainSession;
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if (!(dc % _mtp_internal::dcShift)) {
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dc += mainSession->getDC();
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}
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Sessions::const_iterator i = sessions.constFind(dc);
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if (i != sessions.cend()) return *i;
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MTProtoSessionPtr result(new MTProtoSession());
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result->start(dc);
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sessions.insert(dc, result);
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return result;
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}
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void registerRequest(mtpRequestId requestId, int32 dc) {
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{
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QMutexLocker locker(&requestByDCLock);
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requestsByDC.insert(requestId, dc);
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}
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_mtp_internal::performDelayedClear(); // need to do it somewhere..
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}
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void unregisterRequest(mtpRequestId requestId) {
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::iterator i = requestsByDC.find(requestId);
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if (i != requestsByDC.end()) {
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requestsByDC.erase(i);
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}
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}
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uint32 getLayer() {
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return layer;
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}
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mtpRequestId storeRequest(mtpRequest &request, const RPCResponseHandler &parser) {
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mtpRequestId res = reqid();
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request->requestId = res;
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if (parser.onDone || parser.onFail) {
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parserMap.insert(res, parser);
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requestMap.insert(res, request);
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}
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return res;
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}
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void replaceRequest(mtpRequest &newRequest, const mtpRequest &oldRequest) {
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newRequest->requestId = oldRequest->requestId;
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RequestMap::iterator i = requestMap.find(oldRequest->requestId);
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if (i != requestMap.cend()) {
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i.value() = newRequest;
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}
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}
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void clearCallbacks(mtpRequestId requestId, int32 errorCode) {
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ParserMap::iterator i = parserMap.find(requestId);
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if (i != parserMap.end()) {
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if (errorCode) {
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rpcErrorOccured(requestId, i.value(), rpcClientError("CLEAR_CALLBACK", QString("did not handle request %1, error code %2").arg(requestId).arg(errorCode)));
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}
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parserMap.erase(i);
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}
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requestMap.remove(requestId);
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_mtp_internal::unregisterRequest(requestId);
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}
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void clearCallbacksDelayed(const RPCCallbackClears &requestIds) {
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uint32 idsCount = requestIds.size();
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if (!idsCount) return;
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if (cDebug()) {
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QString idsStr = QString("%1").arg(requestIds[0].requestId);
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for (uint32 i = 1; i < idsCount; ++i) {
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idsStr += QString(", %1").arg(requestIds[i].requestId);
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}
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DEBUG_LOG(("RPC Info: clear callbacks delayed, msgIds: %1").arg(idsStr));
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}
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QMutexLocker lock(&toClearLock);
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uint32 toClearNow = toClear.size();
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if (toClearNow) {
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toClear.resize(toClearNow + idsCount);
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memcpy(toClear.data() + toClearNow, requestIds.constData(), idsCount * sizeof(RPCCallbackClear));
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} else {
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toClear = requestIds;
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}
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}
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void performDelayedClear() {
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QMutexLocker lock(&toClearLock);
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if (!toClear.isEmpty()) {
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for (RPCCallbackClears::iterator i = toClear.begin(), e = toClear.end(); i != e; ++i) {
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if (cDebug()) {
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if (parserMap.find(i->requestId) != parserMap.end()) {
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DEBUG_LOG(("RPC Info: clearing delayed callback %1, error code %2").arg(i->requestId).arg(i->errorCode));
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}
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}
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clearCallbacks(i->requestId, i->errorCode);
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}
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toClear.clear();
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}
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}
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void execCallback(mtpRequestId requestId, const mtpPrime *from, const mtpPrime *end) {
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ParserMap::iterator i = parserMap.find(requestId);
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if (i != parserMap.cend()) {
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RPCResponseHandler h(i.value());
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parserMap.erase(i);
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DEBUG_LOG(("RPC Info: found parser for request %1, trying to parse response..").arg(requestId));
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try {
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if (from >= end) throw mtpErrorInsufficient();
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if (*from == mtpc_rpc_error) {
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RPCError err(MTPRpcError(from, end));
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DEBUG_LOG(("RPC Info: error received, code %1, type %2, description: %3").arg(err.code()).arg(err.type()).arg(err.description()));
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if (!rpcErrorOccured(requestId, h, err)) {
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return;
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}
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} else {
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if (h.onDone) (*h.onDone)(requestId, from, end);
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}
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} catch (Exception &e) {
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if (!rpcErrorOccured(requestId, h, rpcClientError("RESPONSE_PARSE_FAILED", QString("exception text: ") + e.what()))) {
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return;
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}
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}
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requestMap.remove(requestId);
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} else {
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DEBUG_LOG(("RPC Info: parser not found for %1").arg(requestId));
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}
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unregisterRequest(requestId);
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}
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void globalCallback(const mtpPrime *from, const mtpPrime *end) {
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if (globalHandler.onDone) (*globalHandler.onDone)(0, from, end); // some updates were received
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}
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void onStateChange(int32 dc, int32 state) {
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if (stateChangedHandler) stateChangedHandler(dc, state);
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}
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void onSessionReset(int32 dc) {
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if (sessionResetHandler) sessionResetHandler(dc);
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}
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bool rpcErrorOccured(mtpRequestId requestId, const RPCFailHandlerPtr &onFail, const RPCError &err) { // return true if need to clean request data
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if (onErrorDefault(requestId, err)) {
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return false;
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}
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LOG(("RPC Error: request %1 got fail with code %2, error %3%4").arg(requestId).arg(err.code()).arg(err.type()).arg(err.description().isEmpty() ? QString() : QString(": %1").arg(err.description())));
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onFail && (*onFail)(requestId, err);
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return true;
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}
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void RequestResender::checkDelayed() {
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uint64 now = getms();
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while (!delayedRequests.isEmpty() && now >= delayedRequests.front().second) {
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mtpRequestId requestId = delayedRequests.front().first;
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delayedRequests.pop_front();
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int32 dc = 0;
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{
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QMutexLocker locker(&requestByDCLock);
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RequestsByDC::const_iterator i = requestsByDC.constFind(requestId);
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if (i != requestsByDC.cend()) {
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dc = i.value();
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} else {
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LOG(("MTP Error: could not find request dc for delayed resend, requestId %1").arg(requestId));
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continue;
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}
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}
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RequestMap::const_iterator j = requestMap.constFind(requestId);
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if (j == requestMap.cend()) {
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DEBUG_LOG(("MTP Error: could not find request %1").arg(requestId));
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continue;
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}
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_mtp_internal::getSession(dc < 0 ? (-dc) : dc)->sendPrepared(j.value(), 0, false);
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}
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if (!delayedRequests.isEmpty()) {
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QTimer::singleShot(delayedRequests.front().second - now, this, SLOT(checkDelayed()));
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}
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}
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};
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namespace MTP {
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mtpAuthKey &localKey() {
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return _localKey;
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}
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void createLocalKey(const QByteArray &pass, QByteArray *salt) {
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uchar key[LocalEncryptKeySize] = { 0 };
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int32 iterCount = pass.size() ? LocalEncryptIterCount : LocalEncryptNoPwdIterCount; // dont slow down for no password
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QByteArray newSalt;
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if (!salt) {
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newSalt.resize(LocalEncryptSaltSize);
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memset_rand(newSalt.data(), newSalt.size());
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salt = &newSalt;
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cSetLocalSalt(newSalt);
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}
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PKCS5_PBKDF2_HMAC_SHA1(pass.constData(), pass.size(), (uchar*)salt->data(), salt->size(), iterCount, LocalEncryptKeySize, key);
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_localKey.setKey(key);
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}
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void start() {
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unixtimeInit();
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if (!localKey().created()) {
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LOG(("App Error: trying to start MTP without local key!"));
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return;
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}
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mtpLoadData();
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MTProtoDCMap &dcs(mtpDCMap());
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mainSession = MTProtoSessionPtr(new MTProtoSession());
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mainSession->start(mtpMainDC());
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sessions[mainSession->getDC()] = mainSession;
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started = true;
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resender = new _mtp_internal::RequestResender();
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if (mtpNeedConfig()) {
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mtpConfigLoader()->load();
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}
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}
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void restart() {
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if (!started) return;
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for (Sessions::const_iterator i = sessions.cbegin(), e = sessions.cend(); i != e; ++i) {
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(*i)->restart();
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|
}
|
|
}
|
|
void restart(int32 dcMask) {
|
|
if (!started) return;
|
|
|
|
for (Sessions::const_iterator i = sessions.cbegin(), e = sessions.cend(); i != e; ++i) {
|
|
if ((*i)->getDC() % _mtp_internal::dcShift == dcMask % _mtp_internal::dcShift) {
|
|
(*i)->restart();
|
|
}
|
|
}
|
|
}
|
|
|
|
void setLayer(uint32 l) {
|
|
if (l > mtpLayerMax) {
|
|
l = mtpLayerMax;
|
|
} else if (!l) {
|
|
l = 1;
|
|
}
|
|
layer = l - 1;
|
|
}
|
|
|
|
void setdc(int32 dc, bool fromZeroOnly) {
|
|
if (!started) return;
|
|
|
|
int32 m = mainSession->getDC();
|
|
if (!dc || m == dc || (m && fromZeroOnly)) return;
|
|
mtpSetDC(dc);
|
|
mainSession = _mtp_internal::getSession(dc);
|
|
}
|
|
|
|
int32 maindc() {
|
|
if (!started) return 0;
|
|
|
|
return mainSession->getDC();
|
|
}
|
|
|
|
int32 dcstate(int32 dc) {
|
|
if (!started) return 0;
|
|
|
|
if (!dc) return mainSession->getState();
|
|
if (!(dc % _mtp_internal::dcShift)) {
|
|
dc += mainSession->getDC();
|
|
}
|
|
|
|
Sessions::const_iterator i = sessions.constFind(dc);
|
|
if (i != sessions.cend()) return (*i)->getState();
|
|
|
|
return MTProtoConnection::Disconnected;
|
|
}
|
|
|
|
QString dctransport(int32 dc) {
|
|
if (!started) return QString();
|
|
|
|
if (!dc) return mainSession->transport();
|
|
if (!(dc % _mtp_internal::dcShift)) {
|
|
dc += mainSession->getDC();
|
|
}
|
|
|
|
Sessions::const_iterator i = sessions.constFind(dc);
|
|
if (i != sessions.cend()) return (*i)->transport();
|
|
|
|
return QString();
|
|
}
|
|
|
|
void initdc(int32 dc) {
|
|
if (!started) return;
|
|
_mtp_internal::getSession(dc);
|
|
}
|
|
|
|
void cancel(mtpRequestId requestId) {
|
|
{
|
|
QMutexLocker locker(&requestByDCLock);
|
|
RequestsByDC::iterator i = requestsByDC.find(requestId);
|
|
if (i != requestsByDC.end()) {
|
|
_mtp_internal::getSession(abs(i.value()))->cancel(requestId);
|
|
}
|
|
}
|
|
_mtp_internal::clearCallbacks(requestId);
|
|
}
|
|
|
|
void killSession(int32 dc) {
|
|
Sessions::iterator i = sessions.find(dc);
|
|
if (i != sessions.end()) {
|
|
i.value()->stop();
|
|
sessions.erase(i);
|
|
}
|
|
}
|
|
|
|
int32 state(mtpRequestId requestId) {
|
|
if (requestId > 0) {
|
|
QMutexLocker locker(&requestByDCLock);
|
|
RequestsByDC::iterator i = requestsByDC.find(requestId);
|
|
if (i != requestsByDC.end()) {
|
|
return _mtp_internal::getSession(abs(i.value()))->requestState(requestId);
|
|
}
|
|
return MTP::RequestSent;
|
|
}
|
|
return _mtp_internal::getSession(-requestId)->requestState(0);
|
|
}
|
|
|
|
void stop() {
|
|
for (Sessions::iterator i = sessions.begin(), e = sessions.end(); i != e; ++i) {
|
|
i.value()->stop();
|
|
}
|
|
delete resender;
|
|
resender = 0;
|
|
mtpDestroyConfigLoader();
|
|
}
|
|
|
|
void authed(int32 uid) {
|
|
mtpAuthed(uid);
|
|
}
|
|
|
|
int32 authedId() {
|
|
return mtpAuthed();
|
|
}
|
|
|
|
void logoutKeys(RPCDoneHandlerPtr onDone, RPCFailHandlerPtr onFail) {
|
|
mtpRequestId req = MTP::send(MTPauth_LogOut(), onDone, onFail);
|
|
mtpLogoutOtherDCs();
|
|
}
|
|
|
|
void setGlobalDoneHandler(RPCDoneHandlerPtr handler) {
|
|
globalHandler.onDone = handler;
|
|
}
|
|
|
|
void setGlobalFailHandler(RPCFailHandlerPtr handler) {
|
|
globalHandler.onFail = handler;
|
|
}
|
|
|
|
void setStateChangedHandler(MTPStateChangedHandler handler) {
|
|
stateChangedHandler = handler;
|
|
}
|
|
|
|
void setSessionResetHandler(MTPSessionResetHandler handler) {
|
|
sessionResetHandler = handler;
|
|
}
|
|
|
|
void clearGlobalHandlers() {
|
|
setGlobalDoneHandler(RPCDoneHandlerPtr());
|
|
setGlobalFailHandler(RPCFailHandlerPtr());
|
|
setStateChangedHandler(0);
|
|
setSessionResetHandler(0);
|
|
}
|
|
|
|
void updateDcOptions(const QVector<MTPDcOption> &options) {
|
|
mtpUpdateDcOptions(options);
|
|
App::writeUserConfig();
|
|
}
|
|
|
|
void writeConfig(QDataStream &stream) {
|
|
return mtpWriteConfig(stream);
|
|
}
|
|
|
|
bool readConfigElem(int32 blockId, QDataStream &stream) {
|
|
return mtpReadConfigElem(blockId, stream);
|
|
}
|
|
|
|
};
|