tdesktop/Telegram/SourceFiles/mtproto/mtp.cpp

850 lines
26 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "mtp.h"
#include "localstorage.h"
namespace {
typedef QMap<int32, MTProtoSessionPtr> Sessions;
Sessions sessions;
QVector<MTProtoSessionPtr> sessionsToKill;
MTProtoSessionPtr mainSession;
typedef QMap<mtpRequestId, int32> RequestsByDC; // holds dcWithShift for request to this dc or -dc for request to main dc
RequestsByDC requestsByDC;
QMutex requestByDCLock;
typedef QMap<mtpRequestId, int32> AuthExportRequests; // holds target dcWithShift for auth export request
AuthExportRequests authExportRequests;
bool _started = false;
uint32 layer;
typedef QMap<mtpRequestId, RPCResponseHandler> ParserMap;
ParserMap parserMap;
QMutex parserMapLock;
typedef QMap<mtpRequestId, mtpRequest> RequestMap;
RequestMap requestMap;
QReadWriteLock requestMapLock;
typedef QPair<mtpRequestId, uint64> DelayedRequest;
typedef QList<DelayedRequest> DelayedRequestsList;
DelayedRequestsList delayedRequests;
typedef QMap<mtpRequestId, int32> RequestsDelays;
RequestsDelays requestsDelays;
typedef QSet<mtpRequestId> BadGuestDCRequests;
BadGuestDCRequests badGuestDCRequests;
typedef QVector<mtpRequestId> DCAuthWaiters;
typedef QMap<int32, DCAuthWaiters> AuthWaiters; // holds request ids waiting for auth import to specific dc
AuthWaiters authWaiters;
QMutex toClearLock;
RPCCallbackClears toClear;
RPCResponseHandler globalHandler;
MTPStateChangedHandler stateChangedHandler = 0;
MTPSessionResetHandler sessionResetHandler = 0;
_mtp_internal::RequestResender *resender = 0;
void importDone(const MTPauth_Authorization &result, mtpRequestId req) {
QMutexLocker locker1(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(req);
if (i == requestsByDC.end()) {
LOG(("MTP Error: auth import request not found in requestsByDC, requestId: %1").arg(req));
RPCError error(rpcClientError("AUTH_IMPORT_FAIL", QString("did not find import request in requestsByDC, request %1").arg(req)));
if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
return;
}
int32 newdc = i.value() % _mtp_internal::dcShift;
DEBUG_LOG(("MTP Info: auth import to dc %1 succeeded").arg(newdc));
DCAuthWaiters &waiters(authWaiters[newdc]);
if (waiters.size()) {
QReadLocker locker(&requestMapLock);
for (DCAuthWaiters::iterator i = waiters.begin(), e = waiters.end(); i != e; ++i) {
mtpRequestId requestId = *i;
RequestMap::const_iterator j = requestMap.constFind(requestId);
if (j == requestMap.cend()) {
LOG(("MTP Error: could not find request %1 for resending").arg(requestId));
continue;
}
int32 dcWithShift = newdc;
{
RequestsByDC::iterator k = requestsByDC.find(requestId);
if (k == requestsByDC.cend()) {
LOG(("MTP Error: could not find request %1 by dc for resending").arg(requestId));
continue;
}
if (k.value() < 0) {
MTP::setdc(newdc);
k.value() = -newdc;
} else {
int32 shift = k.value() - (k.value() % _mtp_internal::dcShift);
dcWithShift += shift;
k.value() = dcWithShift;
}
DEBUG_LOG(("MTP Info: resending request %1 to dc %2 after import auth").arg(requestId).arg(k.value()));
}
if (MTProtoSessionPtr session = _mtp_internal::getSession(dcWithShift)) {
session->sendPrepared(j.value());
}
}
waiters.clear();
}
}
bool importFail(const RPCError &error, mtpRequestId req) {
if (error.type().startsWith(qsl("FLOOD_WAIT_"))) return false;
if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth import failed
return true;
}
void exportDone(const MTPauth_ExportedAuthorization &result, mtpRequestId req) {
AuthExportRequests::const_iterator i = authExportRequests.constFind(req);
if (i == authExportRequests.cend()) {
LOG(("MTP Error: auth export request target dcWithShift not found, requestId: %1").arg(req));
RPCError error(rpcClientError("AUTH_IMPORT_FAIL", QString("did not find target dcWithShift, request %1").arg(req)));
if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
return;
}
const MTPDauth_exportedAuthorization &data(result.c_auth_exportedAuthorization());
MTP::send(MTPauth_ImportAuthorization(data.vid, data.vbytes), rpcDone(importDone), rpcFail(importFail), i.value());
authExportRequests.remove(req);
}
bool exportFail(const RPCError &error, mtpRequestId req) {
if (error.type().startsWith(qsl("FLOOD_WAIT_"))) return false;
AuthExportRequests::const_iterator i = authExportRequests.constFind(req);
if (i != authExportRequests.cend()) {
authWaiters[i.value() % _mtp_internal::dcShift].clear();
}
if (globalHandler.onFail && MTP::authedId()) (*globalHandler.onFail)(req, error); // auth failed in main dc
return true;
}
bool onErrorDefault(mtpRequestId requestId, const RPCError &error) {
const QString &err(error.type());
int32 code = error.code();
bool badGuestDC = (code == 400) && (err == qsl("FILE_ID_INVALID"));
QRegularExpressionMatch m;
if ((m = QRegularExpression("^(FILE|PHONE|NETWORK|USER)_MIGRATE_(\\d+)$").match(err)).hasMatch()) {
if (!requestId) return false;
int32 dcWithShift = 0, newdcWithShift = m.captured(2).toInt();
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId);
if (i == requestsByDC.end()) {
LOG(("MTP Error: could not find request %1 for migrating to %2").arg(requestId).arg(newdcWithShift));
} else {
dcWithShift = i.value();
}
}
if (!dcWithShift || !newdcWithShift) return false;
DEBUG_LOG(("MTP Info: changing request %1 from dcWithShift%2 to dc%3").arg(requestId).arg(dcWithShift).arg(newdcWithShift));
if (dcWithShift < 0) { // newdc shift = 0
if (false && MTP::authedId() && !authExportRequests.contains(requestId)) { // migrate not supported at this moment
DEBUG_LOG(("MTP Info: importing auth to dc %1").arg(newdcWithShift));
DCAuthWaiters &waiters(authWaiters[newdcWithShift]);
if (!waiters.size()) {
authExportRequests.insert(MTP::send(MTPauth_ExportAuthorization(MTP_int(newdcWithShift)), rpcDone(exportDone), rpcFail(exportFail)), newdcWithShift);
}
waiters.push_back(requestId);
return true;
} else {
MTP::setdc(newdcWithShift);
}
} else {
int32 shift = dcWithShift - (dcWithShift % _mtp_internal::dcShift);
newdcWithShift += shift;
}
mtpRequest req;
{
QReadLocker locker(&requestMapLock);
RequestMap::const_iterator i = requestMap.constFind(requestId);
if (i == requestMap.cend()) {
LOG(("MTP Error: could not find request %1").arg(requestId));
return false;
}
req = i.value();
}
if (MTProtoSessionPtr session = _mtp_internal::getSession(newdcWithShift)) {
_mtp_internal::registerRequest(requestId, (dcWithShift < 0) ? -newdcWithShift : newdcWithShift);
session->sendPrepared(req);
}
return true;
} else if (code < 0 || code >= 500 || (m = QRegularExpression("^FLOOD_WAIT_(\\d+)$").match(err)).hasMatch()) {
if (!requestId) return false;
int32 secs = 1;
if (code < 0 || code >= 500) {
RequestsDelays::iterator i = requestsDelays.find(requestId);
if (i != requestsDelays.cend()) {
secs = (i.value() > 60) ? i.value() : (i.value() *= 2);
} else {
requestsDelays.insert(requestId, secs);
}
} else {
secs = m.captured(1).toInt();
if (secs >= 60) return false;
}
uint64 sendAt = getms(true) + secs * 1000 + 10;
DelayedRequestsList::iterator i = delayedRequests.begin(), e = delayedRequests.end();
for (; i != e; ++i) {
if (i->first == requestId) return true;
if (i->second > sendAt) break;
}
delayedRequests.insert(i, DelayedRequest(requestId, sendAt));
if (resender) resender->checkDelayed();
return true;
} else if (code == 401 || (badGuestDC && badGuestDCRequests.constFind(requestId) == badGuestDCRequests.cend())) {
int32 dcWithShift = 0;
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId);
if (i != requestsByDC.end()) {
dcWithShift = i.value();
} else {
LOG(("MTP Error: unauthorized request without dc info, requestId %1").arg(requestId));
}
}
int32 newdc = abs(dcWithShift) % _mtp_internal::dcShift;
if (!newdc || newdc == mtpMainDC() || !MTP::authedId()) {
if (!badGuestDC && globalHandler.onFail) (*globalHandler.onFail)(requestId, error); // auth failed in main dc
return false;
}
DEBUG_LOG(("MTP Info: importing auth to dcWithShift %1").arg(dcWithShift));
DCAuthWaiters &waiters(authWaiters[newdc]);
if (!waiters.size()) {
authExportRequests.insert(MTP::send(MTPauth_ExportAuthorization(MTP_int(newdc)), rpcDone(exportDone), rpcFail(exportFail)), abs(dcWithShift));
}
waiters.push_back(requestId);
if (badGuestDC) badGuestDCRequests.insert(requestId);
return true;
} else if (err == qsl("CONNECTION_NOT_INITED") || err == qsl("CONNECTION_LAYER_INVALID")) {
mtpRequest req;
{
QReadLocker locker(&requestMapLock);
RequestMap::const_iterator i = requestMap.constFind(requestId);
if (i == requestMap.cend()) {
LOG(("MTP Error: could not find request %1").arg(requestId));
return false;
}
req = i.value();
}
int32 dcWithShift = 0;
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId);
if (i == requestsByDC.end()) {
LOG(("MTP Error: could not find request %1 for resending with init connection").arg(requestId));
} else {
dcWithShift = i.value();
}
}
if (!dcWithShift) return false;
if (MTProtoSessionPtr session = _mtp_internal::getSession(dcWithShift < 0 ? (-dcWithShift) : dcWithShift)) {
req->needsLayer = true;
session->sendPrepared(req);
}
return true;
} else if (err == qsl("MSG_WAIT_FAILED")) {
mtpRequest req;
{
QReadLocker locker(&requestMapLock);
RequestMap::const_iterator i = requestMap.constFind(requestId);
if (i == requestMap.cend()) {
LOG(("MTP Error: could not find request %1").arg(requestId));
return false;
}
req = i.value();
}
if (!req->after) {
LOG(("MTP Error: wait failed for not dependent request %1").arg(requestId));
return false;
}
int32 dcWithShift = 0;
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId), j = requestsByDC.find(req->after->requestId);
if (i == requestsByDC.end()) {
LOG(("MTP Error: could not find request %1 by dc").arg(requestId));
} else if (j == requestsByDC.end()) {
LOG(("MTP Error: could not find dependent request %1 by dc").arg(req->after->requestId));
} else {
dcWithShift = i.value();
if (i.value() != j.value()) {
req->after = mtpRequest();
}
}
}
if (!dcWithShift) return false;
if (!req->after) {
if (MTProtoSessionPtr session = _mtp_internal::getSession(dcWithShift < 0 ? (-dcWithShift) : dcWithShift)) {
req->needsLayer = true;
session->sendPrepared(req);
}
} else {
int32 newdc = abs(dcWithShift) % _mtp_internal::dcShift;
DCAuthWaiters &waiters(authWaiters[newdc]);
if (waiters.indexOf(req->after->requestId) >= 0) {
if (waiters.indexOf(requestId) < 0) {
waiters.push_back(requestId);
}
if (badGuestDCRequests.constFind(req->after->requestId) != badGuestDCRequests.cend()) {
if (badGuestDCRequests.constFind(requestId) == badGuestDCRequests.cend()) {
badGuestDCRequests.insert(requestId);
}
}
} else {
uint64 at = 0;
DelayedRequestsList::iterator i = delayedRequests.begin(), e = delayedRequests.end();
for (; i != e; ++i) {
if (i->first == requestId) return true;
if (i->first == req->after->requestId) break;
}
if (i != e) {
delayedRequests.insert(i, DelayedRequest(requestId, i->second));
}
if (resender) resender->checkDelayed();
}
}
return true;
}
if (badGuestDC) badGuestDCRequests.remove(requestId);
return false;
}
}
namespace _mtp_internal {
MTProtoSessionPtr getSession(int32 dcWithShift) {
if (!_started) return MTProtoSessionPtr();
if (!dcWithShift) return mainSession;
if (!(dcWithShift % _mtp_internal::dcShift)) {
dcWithShift += (mainSession->getDcWithShift() % _mtp_internal::dcShift);
}
Sessions::const_iterator i = sessions.constFind(dcWithShift);
if (i != sessions.cend()) return *i;
MTProtoSessionPtr result(new MTProtoSession());
result->start(dcWithShift);
sessions.insert(dcWithShift, result);
return result;
}
void registerRequest(mtpRequestId requestId, int32 dcWithShift) {
{
QMutexLocker locker(&requestByDCLock);
requestsByDC.insert(requestId, dcWithShift);
}
_mtp_internal::performDelayedClear(); // need to do it somewhere..
}
void unregisterRequest(mtpRequestId requestId) {
requestsDelays.remove(requestId);
{
QWriteLocker locker(&requestMapLock);
requestMap.remove(requestId);
}
QMutexLocker locker(&requestByDCLock);
requestsByDC.remove(requestId);
}
mtpRequestId storeRequest(mtpRequest &request, const RPCResponseHandler &parser) {
mtpRequestId res = reqid();
request->requestId = res;
if (parser.onDone || parser.onFail) {
QMutexLocker locker(&parserMapLock);
parserMap.insert(res, parser);
}
{
QWriteLocker locker(&requestMapLock);
requestMap.insert(res, request);
}
return res;
}
mtpRequest getRequest(mtpRequestId reqId) {
static mtpRequest zero;
mtpRequest req;
{
QReadLocker locker(&requestMapLock);
RequestMap::const_iterator i = requestMap.constFind(reqId);
req = (i == requestMap.cend()) ? zero : i.value();
}
return req;
}
void wrapInvokeAfter(mtpRequest &to, const mtpRequest &from, const mtpRequestMap &haveSent, int32 skipBeforeRequest) {
mtpMsgId afterId(*(mtpMsgId*)(from->after->data() + 4));
mtpRequestMap::const_iterator i = afterId ? haveSent.constFind(afterId) : haveSent.cend();
int32 size = to->size(), lenInInts = (from.innerLength() >> 2), headlen = 4, fulllen = headlen + lenInInts;
if (i == haveSent.constEnd()) { // no invoke after or such msg was not sent or was completed recently
to->resize(size + fulllen + skipBeforeRequest);
if (skipBeforeRequest) {
memcpy(to->data() + size, from->constData() + 4, headlen * sizeof(mtpPrime));
memcpy(to->data() + size + headlen + skipBeforeRequest, from->constData() + 4 + headlen, lenInInts * sizeof(mtpPrime));
} else {
memcpy(to->data() + size, from->constData() + 4, fulllen * sizeof(mtpPrime));
}
} else {
to->resize(size + fulllen + skipBeforeRequest + 3);
memcpy(to->data() + size, from->constData() + 4, headlen * sizeof(mtpPrime));
(*to)[size + 3] += 3 * sizeof(mtpPrime);
*((mtpTypeId*)&((*to)[size + headlen + skipBeforeRequest])) = mtpc_invokeAfterMsg;
memcpy(to->data() + size + headlen + skipBeforeRequest + 1, &afterId, 2 * sizeof(mtpPrime));
memcpy(to->data() + size + headlen + skipBeforeRequest + 3, from->constData() + 4 + headlen, lenInInts * sizeof(mtpPrime));
if (size + 3 != 7) (*to)[7] += 3 * sizeof(mtpPrime);
}
}
void clearCallbacks(mtpRequestId requestId, int32 errorCode) {
RPCResponseHandler h;
bool found = false;
{
QMutexLocker locker(&parserMapLock);
ParserMap::iterator i = parserMap.find(requestId);
if (i != parserMap.end()) {
h = i.value();
found = true;
parserMap.erase(i);
}
}
if (errorCode && found) {
rpcErrorOccured(requestId, h, rpcClientError("CLEAR_CALLBACK", QString("did not handle request %1, error code %2").arg(requestId).arg(errorCode)));
}
}
void clearCallbacksDelayed(const RPCCallbackClears &requestIds) {
uint32 idsCount = requestIds.size();
if (!idsCount) return;
if (cDebug()) {
QString idsStr = QString("%1").arg(requestIds[0].requestId);
for (uint32 i = 1; i < idsCount; ++i) {
idsStr += QString(", %1").arg(requestIds[i].requestId);
}
DEBUG_LOG(("RPC Info: clear callbacks delayed, msgIds: %1").arg(idsStr));
}
QMutexLocker lock(&toClearLock);
uint32 toClearNow = toClear.size();
if (toClearNow) {
toClear.resize(toClearNow + idsCount);
memcpy(toClear.data() + toClearNow, requestIds.constData(), idsCount * sizeof(RPCCallbackClear));
} else {
toClear = requestIds;
}
}
void performDelayedClear() {
QMutexLocker lock(&toClearLock);
if (!toClear.isEmpty()) {
for (RPCCallbackClears::iterator i = toClear.begin(), e = toClear.end(); i != e; ++i) {
if (cDebug()) {
QMutexLocker locker(&parserMapLock);
if (parserMap.find(i->requestId) != parserMap.end()) {
DEBUG_LOG(("RPC Info: clearing delayed callback %1, error code %2").arg(i->requestId).arg(i->errorCode));
}
}
clearCallbacks(i->requestId, i->errorCode);
_mtp_internal::unregisterRequest(i->requestId);
}
toClear.clear();
}
}
void execCallback(mtpRequestId requestId, const mtpPrime *from, const mtpPrime *end) {
RPCResponseHandler h;
{
QMutexLocker locker(&parserMapLock);
ParserMap::iterator i = parserMap.find(requestId);
if (i != parserMap.cend()) {
h = i.value();
parserMap.erase(i);
DEBUG_LOG(("RPC Info: found parser for request %1, trying to parse response..").arg(requestId));
}
}
if (h.onDone || h.onFail) {
try {
if (from >= end) throw mtpErrorInsufficient();
if (*from == mtpc_rpc_error) {
RPCError err(MTPRpcError(from, end));
DEBUG_LOG(("RPC Info: error received, code %1, type %2, description: %3").arg(err.code()).arg(err.type()).arg(err.description()));
if (!rpcErrorOccured(requestId, h, err)) {
QMutexLocker locker(&parserMapLock);
parserMap.insert(requestId, h);
return;
}
} else {
if (h.onDone) (*h.onDone)(requestId, from, end);
}
} catch (Exception &e) {
if (!rpcErrorOccured(requestId, h, rpcClientError("RESPONSE_PARSE_FAILED", QString("exception text: ") + e.what()))) {
QMutexLocker locker(&parserMapLock);
parserMap.insert(requestId, h);
return;
}
}
} else {
DEBUG_LOG(("RPC Info: parser not found for %1").arg(requestId));
}
unregisterRequest(requestId);
}
bool hasCallbacks(mtpRequestId requestId) {
QMutexLocker locker(&parserMapLock);
ParserMap::iterator i = parserMap.find(requestId);
return (i != parserMap.cend());
}
void globalCallback(const mtpPrime *from, const mtpPrime *end) {
if (globalHandler.onDone) (*globalHandler.onDone)(0, from, end); // some updates were received
}
void onStateChange(int32 dcWithShift, int32 state) {
if (stateChangedHandler) stateChangedHandler(dcWithShift, state);
}
void onSessionReset(int32 dcWithShift) {
if (sessionResetHandler) sessionResetHandler(dcWithShift);
}
bool rpcErrorOccured(mtpRequestId requestId, const RPCFailHandlerPtr &onFail, const RPCError &err) { // return true if need to clean request data
if (err.type().startsWith(qsl("FLOOD_WAIT_"))) {
if (onFail && (*onFail)(requestId, err)) return true;
}
if (onErrorDefault(requestId, err)) {
return false;
}
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())));
onFail && (*onFail)(requestId, err);
return true;
}
RequestResender::RequestResender() {
connect(&_timer, SIGNAL(timeout()), this, SLOT(checkDelayed()));
}
void RequestResender::checkDelayed() {
uint64 now = getms(true);
while (!delayedRequests.isEmpty() && now >= delayedRequests.front().second) {
mtpRequestId requestId = delayedRequests.front().first;
delayedRequests.pop_front();
int32 dcWithShift = 0;
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::const_iterator i = requestsByDC.constFind(requestId);
if (i != requestsByDC.cend()) {
dcWithShift = i.value();
} else {
LOG(("MTP Error: could not find request dc for delayed resend, requestId %1").arg(requestId));
continue;
}
}
mtpRequest req;
{
QReadLocker locker(&requestMapLock);
RequestMap::const_iterator j = requestMap.constFind(requestId);
if (j == requestMap.cend()) {
DEBUG_LOG(("MTP Error: could not find request %1").arg(requestId));
continue;
}
req = j.value();
}
if (MTProtoSessionPtr session = _mtp_internal::getSession(dcWithShift < 0 ? (-dcWithShift) : dcWithShift)) {
session->sendPrepared(req);
}
}
if (!delayedRequests.isEmpty()) {
_timer.start(delayedRequests.front().second - now);
}
}
};
namespace MTP {
void start() {
if (started()) return;
unixtimeInit();
MTProtoDCMap &dcs(mtpDCMap());
mainSession = MTProtoSessionPtr(new MTProtoSession());
mainSession->start(mtpMainDC());
sessions[mainSession->getDcWithShift()] = mainSession;
_started = true;
resender = new _mtp_internal::RequestResender();
if (mtpNeedConfig()) {
mtpConfigLoader()->load();
}
}
bool started() {
return _started;
}
void restart() {
if (!_started) return;
for (Sessions::const_iterator i = sessions.cbegin(), e = sessions.cend(); i != e; ++i) {
(*i)->restart();
}
}
void restart(int32 dcMask) {
if (!_started) return;
dcMask %= _mtp_internal::dcShift;
for (Sessions::const_iterator i = sessions.cbegin(), e = sessions.cend(); i != e; ++i) {
if (((*i)->getDcWithShift() % int(_mtp_internal::dcShift)) == dcMask) {
(*i)->restart();
}
}
}
void configure(int32 dc, int32 user) {
if (_started) return;
mtpSetDC(dc);
mtpAuthed(user);
}
void setdc(int32 dc, bool fromZeroOnly) {
if (!dc || !_started) return;
mtpSetDC(dc, fromZeroOnly);
int32 oldMainDc = mainSession->getDcWithShift();
if (maindc() != oldMainDc) {
killSession(oldMainDc);
}
Local::writeMtpData();
}
int32 maindc() {
return mtpMainDC();
}
int32 dcstate(int32 dc) {
if (!_started) return 0;
if (!dc) return mainSession->getState();
if (!(dc % _mtp_internal::dcShift)) {
dc += (mainSession->getDcWithShift() % _mtp_internal::dcShift);
}
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->getDcWithShift() % _mtp_internal::dcShift);
}
Sessions::const_iterator i = sessions.constFind(dc);
if (i != sessions.cend()) return (*i)->transport();
return QString();
}
void ping() {
if (MTProtoSessionPtr session = _mtp_internal::getSession(0)) {
session->ping();
}
}
void cancel(mtpRequestId requestId) {
mtpMsgId msgId = 0;
requestsDelays.remove(requestId);
{
QWriteLocker locker(&requestMapLock);
RequestMap::iterator i = requestMap.find(requestId);
if (i != requestMap.end()) {
msgId = *(mtpMsgId*)(i.value()->constData() + 4);
requestMap.erase(i);
}
}
{
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId);
if (i != requestsByDC.end()) {
if (MTProtoSessionPtr session = _mtp_internal::getSession(abs(i.value()))) {
session->cancel(requestId, msgId);
}
requestsByDC.erase(i);
}
}
_mtp_internal::clearCallbacks(requestId);
}
void killSessionsDelayed() {
if (!sessionsToKill.isEmpty()) {
sessionsToKill.clear();
}
}
void killSession(int32 dc) {
Sessions::iterator i = sessions.find(dc);
if (i != sessions.end()) {
bool wasMain = (i.value() == mainSession);
i.value()->kill();
if (sessionsToKill.isEmpty()) QTimer::singleShot(0, killSessionsDelayed);
sessionsToKill.push_back(i.value());
sessions.erase(i);
if (wasMain) {
mainSession = MTProtoSessionPtr(new MTProtoSession());
mainSession->start(mtpMainDC());
sessions[mainSession->getDcWithShift()] = mainSession;
}
}
}
void stopSession(int32 dc) {
Sessions::iterator i = sessions.find(dc);
if (i != sessions.end()) {
if (i.value() != mainSession) { // don't stop main session
i.value()->stop();
}
}
}
int32 state(mtpRequestId requestId) {
if (requestId > 0) {
QMutexLocker locker(&requestByDCLock);
RequestsByDC::iterator i = requestsByDC.find(requestId);
if (i != requestsByDC.end()) {
if (MTProtoSessionPtr session = _mtp_internal::getSession(abs(i.value()))) {
return session->requestState(requestId);
}
return MTP::RequestConnecting;
}
return MTP::RequestSent;
}
if (MTProtoSessionPtr session = _mtp_internal::getSession(-requestId)) {
return session->requestState(0);
}
return MTP::RequestConnecting;
}
void stop() {
for (Sessions::iterator i = sessions.begin(), e = sessions.end(); i != e; ++i) {
i.value()->kill();
}
sessions.clear();
mainSession = MTProtoSessionPtr();
delete resender;
resender = 0;
mtpDestroyConfigLoader();
_started = false;
}
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);
Local::writeSettings();
}
mtpKeysMap getKeys() {
return mtpGetKeys();
}
void setKey(int32 dc, mtpAuthKeyPtr key) {
return mtpSetKey(dc, key);
}
QReadWriteLock *dcOptionsMutex() {
return mtpDcOptionsMutex();
}
};