tdesktop/Telegram/SourceFiles/calls/calls_call.cpp

1276 lines
36 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "calls/calls_call.h"
#include "main/main_session.h"
#include "main/main_account.h"
#include "main/main_app_config.h"
#include "apiwrap.h"
#include "lang/lang_keys.h"
#include "ui/boxes/confirm_box.h"
#include "ui/boxes/rate_call_box.h"
#include "calls/calls_instance.h"
#include "base/openssl_help.h"
#include "base/random.h"
#include "mtproto/mtproto_dh_utils.h"
#include "mtproto/mtproto_config.h"
#include "core/application.h"
#include "core/core_settings.h"
#include "media/audio/media_audio_track.h"
#include "base/platform/base_platform_info.h"
#include "calls/calls_panel.h"
#include "webrtc/webrtc_video_track.h"
#include "webrtc/webrtc_media_devices.h"
#include "webrtc/webrtc_create_adm.h"
#include "data/data_user.h"
#include "data/data_session.h"
#include <tgcalls/Instance.h>
#include <tgcalls/VideoCaptureInterface.h>
#include <tgcalls/StaticThreads.h>
namespace tgcalls {
class InstanceImpl;
class InstanceV2Impl;
class InstanceImplLegacy;
void SetLegacyGlobalServerConfig(const std::string &serverConfig);
} // namespace tgcalls
namespace Calls {
namespace {
constexpr auto kMinLayer = 65;
constexpr auto kHangupTimeoutMs = 5000;
constexpr auto kSha256Size = 32;
constexpr auto kAuthKeySize = 256;
const auto kDefaultVersion = "2.4.4"_q;
const auto Register = tgcalls::Register<tgcalls::InstanceImpl>();
const auto RegisterV2 = tgcalls::Register<tgcalls::InstanceV2Impl>();
const auto RegisterLegacy = tgcalls::Register<tgcalls::InstanceImplLegacy>();
void AppendEndpoint(
std::vector<tgcalls::Endpoint> &list,
const MTPPhoneConnection &connection) {
connection.match([&](const MTPDphoneConnection &data) {
if (data.vpeer_tag().v.length() != 16) {
return;
}
tgcalls::Endpoint endpoint = {
.endpointId = (int64_t)data.vid().v,
.host = tgcalls::EndpointHost{
.ipv4 = data.vip().v.toStdString(),
.ipv6 = data.vipv6().v.toStdString() },
.port = (uint16_t)data.vport().v,
.type = tgcalls::EndpointType::UdpRelay,
};
const auto tag = data.vpeer_tag().v;
if (tag.size() >= 16) {
memcpy(endpoint.peerTag, tag.data(), 16);
}
list.push_back(std::move(endpoint));
}, [&](const MTPDphoneConnectionWebrtc &data) {
});
}
void AppendServer(
std::vector<tgcalls::RtcServer> &list,
const MTPPhoneConnection &connection) {
connection.match([&](const MTPDphoneConnection &data) {
}, [&](const MTPDphoneConnectionWebrtc &data) {
const auto host = qs(data.vip());
const auto hostv6 = qs(data.vipv6());
const auto port = uint16_t(data.vport().v);
if (data.is_stun()) {
const auto pushStun = [&](const QString &host) {
if (host.isEmpty()) {
return;
}
list.push_back(tgcalls::RtcServer{
.host = host.toStdString(),
.port = port,
.isTurn = false
});
};
pushStun(host);
pushStun(hostv6);
}
const auto username = qs(data.vusername());
const auto password = qs(data.vpassword());
if (data.is_turn() && !username.isEmpty() && !password.isEmpty()) {
const auto pushTurn = [&](const QString &host) {
list.push_back(tgcalls::RtcServer{
.host = host.toStdString(),
.port = port,
.login = username.toStdString(),
.password = password.toStdString(),
.isTurn = true,
});
};
pushTurn(host);
pushTurn(hostv6);
}
});
}
constexpr auto kFingerprintDataSize = 256;
uint64 ComputeFingerprint(bytes::const_span authKey) {
Expects(authKey.size() == kFingerprintDataSize);
auto hash = openssl::Sha1(authKey);
return (gsl::to_integer<uint64>(hash[19]) << 56)
| (gsl::to_integer<uint64>(hash[18]) << 48)
| (gsl::to_integer<uint64>(hash[17]) << 40)
| (gsl::to_integer<uint64>(hash[16]) << 32)
| (gsl::to_integer<uint64>(hash[15]) << 24)
| (gsl::to_integer<uint64>(hash[14]) << 16)
| (gsl::to_integer<uint64>(hash[13]) << 8)
| (gsl::to_integer<uint64>(hash[12]));
}
[[nodiscard]] QVector<MTPstring> WrapVersions(
const std::vector<std::string> &data) {
return ranges::views::all(
data
) | ranges::views::transform([=](const std::string &string) {
return MTP_string(string);
}) | ranges::to<QVector<MTPstring>>;
}
[[nodiscard]] QVector<MTPstring> CollectVersionsForApi() {
return WrapVersions(tgcalls::Meta::Versions() | ranges::actions::reverse);
}
[[nodiscard]] Webrtc::VideoState StartVideoState(bool enabled) {
using State = Webrtc::VideoState;
return enabled ? State::Active : State::Inactive;
}
} // namespace
Call::Call(
not_null<Delegate*> delegate,
not_null<UserData*> user,
Type type,
bool video)
: _delegate(delegate)
, _user(user)
, _api(&_user->session().mtp())
, _type(type)
, _videoIncoming(
std::make_unique<Webrtc::VideoTrack>(
StartVideoState(video)))
, _videoOutgoing(
std::make_unique<Webrtc::VideoTrack>(
StartVideoState(video))) {
_discardByTimeoutTimer.setCallback([=] { hangup(); });
if (_type == Type::Outgoing) {
setState(State::Requesting);
} else {
const auto &config = _user->session().serverConfig();
_discardByTimeoutTimer.callOnce(config.callRingTimeoutMs);
startWaitingTrack();
}
setupOutgoingVideo();
}
void Call::generateModExpFirst(bytes::const_span randomSeed) {
auto first = MTP::CreateModExp(_dhConfig.g, _dhConfig.p, randomSeed);
if (first.modexp.empty()) {
LOG(("Call Error: Could not compute mod-exp first."));
finish(FinishType::Failed);
return;
}
_randomPower = std::move(first.randomPower);
if (_type == Type::Incoming) {
_gb = std::move(first.modexp);
} else {
_ga = std::move(first.modexp);
_gaHash = openssl::Sha256(_ga);
}
}
bool Call::isIncomingWaiting() const {
if (type() != Call::Type::Incoming) {
return false;
}
return (state() == State::Starting)
|| (state() == State::WaitingIncoming);
}
void Call::start(bytes::const_span random) {
// Save config here, because it is possible that it changes between
// different usages inside the same call.
_dhConfig = _delegate->getDhConfig();
Assert(_dhConfig.g != 0);
Assert(!_dhConfig.p.empty());
generateModExpFirst(random);
const auto state = _state.current();
if (state == State::Starting || state == State::Requesting) {
if (_type == Type::Outgoing) {
startOutgoing();
} else {
startIncoming();
}
} else if (state == State::ExchangingKeys
&& _answerAfterDhConfigReceived) {
answer();
}
}
void Call::startOutgoing() {
Expects(_type == Type::Outgoing);
Expects(_state.current() == State::Requesting);
Expects(_gaHash.size() == kSha256Size);
const auto flags = _videoCapture
? MTPphone_RequestCall::Flag::f_video
: MTPphone_RequestCall::Flag(0);
_api.request(MTPphone_RequestCall(
MTP_flags(flags),
_user->inputUser,
MTP_int(base::RandomValue<int32>()),
MTP_bytes(_gaHash),
MTP_phoneCallProtocol(
MTP_flags(MTPDphoneCallProtocol::Flag::f_udp_p2p
| MTPDphoneCallProtocol::Flag::f_udp_reflector),
MTP_int(kMinLayer),
MTP_int(tgcalls::Meta::MaxLayer()),
MTP_vector(CollectVersionsForApi()))
)).done([=](const MTPphone_PhoneCall &result) {
Expects(result.type() == mtpc_phone_phoneCall);
setState(State::Waiting);
const auto &call = result.c_phone_phoneCall();
_user->session().data().processUsers(call.vusers());
if (call.vphone_call().type() != mtpc_phoneCallWaiting) {
LOG(("Call Error: Expected phoneCallWaiting in response to "
"phone.requestCall()"));
finish(FinishType::Failed);
return;
}
const auto &phoneCall = call.vphone_call();
const auto &waitingCall = phoneCall.c_phoneCallWaiting();
_id = waitingCall.vid().v;
_accessHash = waitingCall.vaccess_hash().v;
if (_finishAfterRequestingCall != FinishType::None) {
if (_finishAfterRequestingCall == FinishType::Failed) {
finish(_finishAfterRequestingCall);
} else {
hangup();
}
return;
}
const auto &config = _user->session().serverConfig();
_discardByTimeoutTimer.callOnce(config.callReceiveTimeoutMs);
handleUpdate(phoneCall);
}).fail([this](const MTP::Error &error) {
handleRequestError(error.type());
}).send();
}
void Call::startIncoming() {
Expects(_type == Type::Incoming);
Expects(_state.current() == State::Starting);
_api.request(MTPphone_ReceivedCall(
MTP_inputPhoneCall(MTP_long(_id), MTP_long(_accessHash))
)).done([=] {
if (_state.current() == State::Starting) {
setState(State::WaitingIncoming);
}
}).fail([=](const MTP::Error &error) {
handleRequestError(error.type());
}).send();
}
void Call::answer() {
const auto video = isSharingVideo();
_delegate->callRequestPermissionsOrFail(crl::guard(this, [=] {
actuallyAnswer();
}), video);
}
void Call::actuallyAnswer() {
Expects(_type == Type::Incoming);
const auto state = _state.current();
if (state != State::Starting && state != State::WaitingIncoming) {
if (state != State::ExchangingKeys
|| !_answerAfterDhConfigReceived) {
return;
}
}
setState(State::ExchangingKeys);
if (_gb.empty()) {
_answerAfterDhConfigReceived = true;
return;
} else {
_answerAfterDhConfigReceived = false;
}
_api.request(MTPphone_AcceptCall(
MTP_inputPhoneCall(MTP_long(_id), MTP_long(_accessHash)),
MTP_bytes(_gb),
MTP_phoneCallProtocol(
MTP_flags(MTPDphoneCallProtocol::Flag::f_udp_p2p
| MTPDphoneCallProtocol::Flag::f_udp_reflector),
MTP_int(kMinLayer),
MTP_int(tgcalls::Meta::MaxLayer()),
MTP_vector(CollectVersionsForApi()))
)).done([=](const MTPphone_PhoneCall &result) {
Expects(result.type() == mtpc_phone_phoneCall);
const auto &call = result.c_phone_phoneCall();
_user->session().data().processUsers(call.vusers());
if (call.vphone_call().type() != mtpc_phoneCallWaiting) {
LOG(("Call Error: "
"Not phoneCallWaiting in response to phone.acceptCall."));
finish(FinishType::Failed);
return;
}
handleUpdate(call.vphone_call());
}).fail([=](const MTP::Error &error) {
handleRequestError(error.type());
}).send();
}
void Call::setMuted(bool mute) {
_muted = mute;
if (_instance) {
_instance->setMuteMicrophone(mute);
}
}
void Call::setupOutgoingVideo() {
static const auto hasDevices = [] {
return !Webrtc::GetVideoInputList().empty();
};
const auto started = _videoOutgoing->state();
if (!hasDevices()) {
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
}
_videoOutgoing->stateValue(
) | rpl::start_with_next([=](Webrtc::VideoState state) {
if (state != Webrtc::VideoState::Inactive
&& !hasDevices()
&& !_videoCaptureIsScreencast) {
_errors.fire({ ErrorType::NoCamera });
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
} else if (_state.current() != State::Established
&& (state != Webrtc::VideoState::Inactive)
&& (started == Webrtc::VideoState::Inactive)) {
_errors.fire({ ErrorType::NotStartedCall });
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
} else if (state != Webrtc::VideoState::Inactive
&& _instance
&& !_instance->supportsVideo()) {
_errors.fire({ ErrorType::NotVideoCall });
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
} else if (state != Webrtc::VideoState::Inactive) {
// Paused not supported right now.
Assert(state == Webrtc::VideoState::Active);
if (!_videoCapture) {
_videoCapture = _delegate->callGetVideoCapture(
_videoCaptureDeviceId,
_videoCaptureIsScreencast);
_videoCapture->setOutput(_videoOutgoing->sink());
}
_videoCapture->setState(tgcalls::VideoState::Active);
if (_instance) {
_instance->setVideoCapture(_videoCapture);
}
} else if (_videoCapture) {
_videoCapture->setState(tgcalls::VideoState::Inactive);
if (_instance) {
_instance->setVideoCapture(nullptr);
}
}
}, _lifetime);
}
not_null<Webrtc::VideoTrack*> Call::videoIncoming() const {
return _videoIncoming.get();
}
not_null<Webrtc::VideoTrack*> Call::videoOutgoing() const {
return _videoOutgoing.get();
}
crl::time Call::getDurationMs() const {
return _startTime ? (crl::now() - _startTime) : 0;
}
void Call::hangup() {
const auto state = _state.current();
if (state == State::Busy) {
_delegate->callFinished(this);
} else {
const auto missed = (state == State::Ringing
|| (state == State::Waiting && _type == Type::Outgoing));
const auto declined = isIncomingWaiting();
const auto reason = missed
? MTP_phoneCallDiscardReasonMissed()
: declined
? MTP_phoneCallDiscardReasonBusy()
: MTP_phoneCallDiscardReasonHangup();
finish(FinishType::Ended, reason);
}
}
void Call::redial() {
if (_state.current() != State::Busy) {
return;
}
Assert(_instance == nullptr);
_type = Type::Outgoing;
setState(State::Requesting);
_answerAfterDhConfigReceived = false;
startWaitingTrack();
_delegate->callRedial(this);
}
QString Call::getDebugLog() const {
return _instance
? QString::fromStdString(_instance->getDebugInfo())
: QString();
}
void Call::startWaitingTrack() {
_waitingTrack = Media::Audio::Current().createTrack();
const auto trackFileName = Core::App().settings().getSoundPath(
(_type == Type::Outgoing)
? qsl("call_outgoing")
: qsl("call_incoming"));
_waitingTrack->samplePeakEach(kSoundSampleMs);
_waitingTrack->fillFromFile(trackFileName);
_waitingTrack->playInLoop();
}
void Call::sendSignalingData(const QByteArray &data) {
_api.request(MTPphone_SendSignalingData(
MTP_inputPhoneCall(
MTP_long(_id),
MTP_long(_accessHash)),
MTP_bytes(data)
)).done([=](const MTPBool &result) {
if (!mtpIsTrue(result)) {
finish(FinishType::Failed);
}
}).fail([=](const MTP::Error &error) {
handleRequestError(error.type());
}).send();
}
float64 Call::getWaitingSoundPeakValue() const {
if (_waitingTrack) {
const auto when = crl::now() + kSoundSampleMs / 4;
return _waitingTrack->getPeakValue(when);
}
return 0.;
}
bool Call::isKeyShaForFingerprintReady() const {
return (_keyFingerprint != 0);
}
bytes::vector Call::getKeyShaForFingerprint() const {
Expects(isKeyShaForFingerprintReady());
Expects(!_ga.empty());
auto encryptedChatAuthKey = bytes::vector(
_authKey.size() + _ga.size(),
gsl::byte{});
bytes::copy(
gsl::make_span(encryptedChatAuthKey).subspan(0, _authKey.size()),
_authKey);
bytes::copy(
gsl::make_span(encryptedChatAuthKey).subspan(
_authKey.size(),
_ga.size()),
_ga);
return openssl::Sha256(encryptedChatAuthKey);
}
bool Call::handleUpdate(const MTPPhoneCall &call) {
switch (call.type()) {
case mtpc_phoneCallRequested: {
const auto &data = call.c_phoneCallRequested();
if (_type != Type::Incoming
|| _id != 0
|| peerToUser(_user->id) != UserId(data.vadmin_id())) {
Unexpected("phoneCallRequested call inside an existing call "
"handleUpdate()");
}
if (_user->session().userId() != UserId(data.vparticipant_id())) {
LOG(("Call Error: Wrong call participant_id %1, expected %2."
).arg(data.vparticipant_id().v
).arg(_user->session().userId().bare));
finish(FinishType::Failed);
return true;
}
_id = data.vid().v;
_accessHash = data.vaccess_hash().v;
const auto gaHashBytes = bytes::make_span(data.vg_a_hash().v);
if (gaHashBytes.size() != kSha256Size) {
LOG(("Call Error: Wrong g_a_hash size %1, expected %2."
).arg(gaHashBytes.size()
).arg(kSha256Size));
finish(FinishType::Failed);
return true;
}
_gaHash = bytes::make_vector(gaHashBytes);
} return true;
case mtpc_phoneCallEmpty: {
const auto &data = call.c_phoneCallEmpty();
if (data.vid().v != _id) {
return false;
}
LOG(("Call Error: phoneCallEmpty received."));
finish(FinishType::Failed);
} return true;
case mtpc_phoneCallWaiting: {
const auto &data = call.c_phoneCallWaiting();
if (data.vid().v != _id) {
return false;
}
if (_type == Type::Outgoing
&& _state.current() == State::Waiting
&& data.vreceive_date().value_or_empty() != 0) {
const auto &config = _user->session().serverConfig();
_discardByTimeoutTimer.callOnce(config.callRingTimeoutMs);
setState(State::Ringing);
startWaitingTrack();
}
} return true;
case mtpc_phoneCall: {
const auto &data = call.c_phoneCall();
if (data.vid().v != _id) {
return false;
}
if (_type == Type::Incoming
&& _state.current() == State::ExchangingKeys
&& !_instance) {
startConfirmedCall(data);
}
} return true;
case mtpc_phoneCallDiscarded: {
const auto &data = call.c_phoneCallDiscarded();
if (data.vid().v != _id) {
return false;
}
if (data.is_need_debug()) {
const auto debugLog = _instance
? _instance->getDebugInfo()
: std::string();
if (!debugLog.empty()) {
user()->session().api().request(MTPphone_SaveCallDebug(
MTP_inputPhoneCall(
MTP_long(_id),
MTP_long(_accessHash)),
MTP_dataJSON(MTP_string(debugLog))
)).send();
}
}
if (data.is_need_rating() && _id && _accessHash) {
const auto session = &_user->session();
const auto callId = _id;
const auto callAccessHash = _accessHash;
const auto box = Ui::show(Box<Ui::RateCallBox>(
Core::App().settings().sendSubmitWay()));
const auto sender = box->lifetime().make_state<MTP::Sender>(
&session->mtp());
box->sends(
) | rpl::take(
1 // Instead of keeping requestId.
) | rpl::start_with_next([=](const Ui::RateCallBox::Result &r) {
sender->request(MTPphone_SetCallRating(
MTP_flags(0),
MTP_inputPhoneCall(
MTP_long(callId),
MTP_long(callAccessHash)),
MTP_int(r.rating),
MTP_string(r.comment)
)).done([=](const MTPUpdates &updates) {
session->api().applyUpdates(updates);
box->closeBox();
}).fail([=] {
box->closeBox();
}).send();
}, box->lifetime());
}
const auto reason = data.vreason();
if (reason
&& reason->type() == mtpc_phoneCallDiscardReasonDisconnect) {
LOG(("Call Info: Discarded with DISCONNECT reason."));
}
if (reason && reason->type() == mtpc_phoneCallDiscardReasonBusy) {
setState(State::Busy);
} else if (_type == Type::Outgoing
|| _state.current() == State::HangingUp) {
setState(State::Ended);
} else {
setState(State::EndedByOtherDevice);
}
} return true;
case mtpc_phoneCallAccepted: {
const auto &data = call.c_phoneCallAccepted();
if (data.vid().v != _id) {
return false;
}
if (_type != Type::Outgoing) {
LOG(("Call Error: "
"Unexpected phoneCallAccepted for an incoming call."));
finish(FinishType::Failed);
} else if (checkCallFields(data)) {
confirmAcceptedCall(data);
}
} return true;
}
Unexpected("phoneCall type inside an existing call handleUpdate()");
}
void Call::updateRemoteMediaState(
tgcalls::AudioState audio,
tgcalls::VideoState video) {
_remoteAudioState = [&] {
using From = tgcalls::AudioState;
using To = RemoteAudioState;
switch (audio) {
case From::Active: return To::Active;
case From::Muted: return To::Muted;
}
Unexpected("Audio state in remoteMediaStateUpdated.");
}();
_videoIncoming->setState([&] {
using From = tgcalls::VideoState;
using To = Webrtc::VideoState;
switch (video) {
case From::Inactive: return To::Inactive;
case From::Paused: return To::Paused;
case From::Active: return To::Active;
}
Unexpected("Video state in remoteMediaStateUpdated.");
}());
}
bool Call::handleSignalingData(
const MTPDupdatePhoneCallSignalingData &data) {
if (data.vphone_call_id().v != _id || !_instance) {
return false;
}
auto prepared = ranges::views::all(
data.vdata().v
) | ranges::views::transform([](char byte) {
return static_cast<uint8_t>(byte);
}) | ranges::to_vector;
_instance->receiveSignalingData(std::move(prepared));
return true;
}
void Call::confirmAcceptedCall(const MTPDphoneCallAccepted &call) {
Expects(_type == Type::Outgoing);
if (_state.current() == State::ExchangingKeys
|| _instance) {
LOG(("Call Warning: Unexpected confirmAcceptedCall."));
return;
}
const auto firstBytes = bytes::make_span(call.vg_b().v);
const auto computedAuthKey = MTP::CreateAuthKey(
firstBytes,
_randomPower,
_dhConfig.p);
if (computedAuthKey.empty()) {
LOG(("Call Error: Could not compute mod-exp final."));
finish(FinishType::Failed);
return;
}
MTP::AuthKey::FillData(_authKey, computedAuthKey);
_keyFingerprint = ComputeFingerprint(_authKey);
setState(State::ExchangingKeys);
_api.request(MTPphone_ConfirmCall(
MTP_inputPhoneCall(MTP_long(_id), MTP_long(_accessHash)),
MTP_bytes(_ga),
MTP_long(_keyFingerprint),
MTP_phoneCallProtocol(
MTP_flags(MTPDphoneCallProtocol::Flag::f_udp_p2p
| MTPDphoneCallProtocol::Flag::f_udp_reflector),
MTP_int(kMinLayer),
MTP_int(tgcalls::Meta::MaxLayer()),
MTP_vector(CollectVersionsForApi()))
)).done([=](const MTPphone_PhoneCall &result) {
Expects(result.type() == mtpc_phone_phoneCall);
const auto &call = result.c_phone_phoneCall();
_user->session().data().processUsers(call.vusers());
if (call.vphone_call().type() != mtpc_phoneCall) {
LOG(("Call Error: Expected phoneCall in response to "
"phone.confirmCall()"));
finish(FinishType::Failed);
return;
}
createAndStartController(call.vphone_call().c_phoneCall());
}).fail([=](const MTP::Error &error) {
handleRequestError(error.type());
}).send();
}
void Call::startConfirmedCall(const MTPDphoneCall &call) {
Expects(_type == Type::Incoming);
const auto firstBytes = bytes::make_span(call.vg_a_or_b().v);
if (_gaHash != openssl::Sha256(firstBytes)) {
LOG(("Call Error: Wrong g_a hash received."));
finish(FinishType::Failed);
return;
}
_ga = bytes::vector(firstBytes.begin(), firstBytes.end());
const auto computedAuthKey = MTP::CreateAuthKey(
firstBytes,
_randomPower,
_dhConfig.p);
if (computedAuthKey.empty()) {
LOG(("Call Error: Could not compute mod-exp final."));
finish(FinishType::Failed);
return;
}
MTP::AuthKey::FillData(_authKey, computedAuthKey);
_keyFingerprint = ComputeFingerprint(_authKey);
createAndStartController(call);
}
void Call::createAndStartController(const MTPDphoneCall &call) {
_discardByTimeoutTimer.cancel();
if (!checkCallFields(call) || _authKey.size() != kAuthKeySize) {
return;
}
const auto &protocol = call.vprotocol().c_phoneCallProtocol();
const auto &serverConfig = _user->session().serverConfig();
auto encryptionKeyValue = std::make_shared<std::array<
uint8_t,
kAuthKeySize>>();
memcpy(encryptionKeyValue->data(), _authKey.data(), kAuthKeySize);
const auto &settings = Core::App().settings();
const auto weak = base::make_weak(this);
tgcalls::Descriptor descriptor = {
.config = tgcalls::Config{
.initializationTimeout =
serverConfig.callConnectTimeoutMs / 1000.,
.receiveTimeout = serverConfig.callPacketTimeoutMs / 1000.,
.dataSaving = tgcalls::DataSaving::Never,
.enableP2P = call.is_p2p_allowed(),
.enableAEC = false,
.enableNS = true,
.enableAGC = true,
.enableVolumeControl = true,
.maxApiLayer = protocol.vmax_layer().v,
},
.encryptionKey = tgcalls::EncryptionKey(
std::move(encryptionKeyValue),
(_type == Type::Outgoing)),
.mediaDevicesConfig = tgcalls::MediaDevicesConfig{
.audioInputId = settings.callInputDeviceId().toStdString(),
.audioOutputId = settings.callOutputDeviceId().toStdString(),
.inputVolume = 1.f,//settings.callInputVolume() / 100.f,
.outputVolume = 1.f,//settings.callOutputVolume() / 100.f,
},
.videoCapture = _videoCapture,
.stateUpdated = [=](tgcalls::State state) {
crl::on_main(weak, [=] {
handleControllerStateChange(state);
});
},
.signalBarsUpdated = [=](int count) {
crl::on_main(weak, [=] {
handleControllerBarCountChange(count);
});
},
.remoteMediaStateUpdated = [=](
tgcalls::AudioState audio,
tgcalls::VideoState video) {
crl::on_main(weak, [=] {
updateRemoteMediaState(audio, video);
});
},
.signalingDataEmitted = [=](const std::vector<uint8_t> &data) {
const auto bytes = QByteArray(
reinterpret_cast<const char*>(data.data()),
data.size());
crl::on_main(weak, [=] {
sendSignalingData(bytes);
});
},
.createAudioDeviceModule = Webrtc::AudioDeviceModuleCreator(
settings.callAudioBackend()),
};
if (Logs::DebugEnabled()) {
const auto callLogFolder = cWorkingDir() + qsl("DebugLogs");
const auto callLogPath = callLogFolder + qsl("/last_call_log.txt");
const auto callLogNative = QDir::toNativeSeparators(callLogPath);
#ifdef Q_OS_WIN
descriptor.config.logPath.data = callLogNative.toStdWString();
#else // Q_OS_WIN
const auto callLogUtf = QFile::encodeName(callLogNative);
descriptor.config.logPath.data.resize(callLogUtf.size());
ranges::copy(callLogUtf, descriptor.config.logPath.data.begin());
#endif // Q_OS_WIN
QFile(callLogPath).remove();
QDir().mkpath(callLogFolder);
}
for (const auto &connection : call.vconnections().v) {
AppendEndpoint(descriptor.endpoints, connection);
}
for (const auto &connection : call.vconnections().v) {
AppendServer(descriptor.rtcServers, connection);
}
{
const auto &settingsProxy = Core::App().settings().proxy();
using ProxyData = MTP::ProxyData;
if (settingsProxy.useProxyForCalls() && settingsProxy.isEnabled()) {
const auto &selected = settingsProxy.selected();
if (selected.supportsCalls() && !selected.host.isEmpty()) {
Assert(selected.type == ProxyData::Type::Socks5);
descriptor.proxy = std::make_unique<tgcalls::Proxy>();
descriptor.proxy->host = selected.host.toStdString();
descriptor.proxy->port = selected.port;
descriptor.proxy->login = selected.user.toStdString();
descriptor.proxy->password = selected.password.toStdString();
}
}
}
const auto version = call.vprotocol().match([&](
const MTPDphoneCallProtocol &data) {
return data.vlibrary_versions().v;
}).value(0, MTP_bytes(kDefaultVersion)).v;
LOG(("Call Info: Creating instance with version '%1', allowP2P: %2").arg(
QString::fromUtf8(version),
Logs::b(descriptor.config.enableP2P)));
_instance = tgcalls::Meta::Create(
version.toStdString(),
std::move(descriptor));
if (!_instance) {
LOG(("Call Error: Wrong library version: %1."
).arg(QString::fromUtf8(version)));
finish(FinishType::Failed);
return;
}
const auto raw = _instance.get();
if (_muted.current()) {
raw->setMuteMicrophone(_muted.current());
}
raw->setIncomingVideoOutput(_videoIncoming->sink());
raw->setAudioOutputDuckingEnabled(settings.callAudioDuckingEnabled());
}
void Call::handleControllerStateChange(tgcalls::State state) {
switch (state) {
case tgcalls::State::WaitInit: {
DEBUG_LOG(("Call Info: State changed to WaitingInit."));
setState(State::WaitingInit);
} break;
case tgcalls::State::WaitInitAck: {
DEBUG_LOG(("Call Info: State changed to WaitingInitAck."));
setState(State::WaitingInitAck);
} break;
case tgcalls::State::Established: {
DEBUG_LOG(("Call Info: State changed to Established."));
setState(State::Established);
} break;
case tgcalls::State::Failed: {
const auto error = _instance
? QString::fromStdString(_instance->getLastError())
: QString();
LOG(("Call Info: State changed to Failed, error: %1.").arg(error));
handleControllerError(error);
} break;
default: LOG(("Call Error: Unexpected state in handleStateChange: %1"
).arg(int(state)));
}
}
void Call::handleControllerBarCountChange(int count) {
setSignalBarCount(count);
}
void Call::setSignalBarCount(int count) {
_signalBarCount = count;
}
template <typename T>
bool Call::checkCallCommonFields(const T &call) {
const auto checkFailed = [this] {
finish(FinishType::Failed);
return false;
};
if (call.vaccess_hash().v != _accessHash) {
LOG(("Call Error: Wrong call access_hash."));
return checkFailed();
}
const auto adminId = (_type == Type::Outgoing)
? _user->session().userId()
: peerToUser(_user->id);
const auto participantId = (_type == Type::Outgoing)
? peerToUser(_user->id)
: _user->session().userId();
if (UserId(call.vadmin_id()) != adminId) {
LOG(("Call Error: Wrong call admin_id %1, expected %2.")
.arg(call.vadmin_id().v)
.arg(adminId.bare));
return checkFailed();
}
if (UserId(call.vparticipant_id()) != participantId) {
LOG(("Call Error: Wrong call participant_id %1, expected %2.")
.arg(call.vparticipant_id().v)
.arg(participantId.bare));
return checkFailed();
}
return true;
}
bool Call::checkCallFields(const MTPDphoneCall &call) {
if (!checkCallCommonFields(call)) {
return false;
}
if (call.vkey_fingerprint().v != _keyFingerprint) {
LOG(("Call Error: Wrong call fingerprint."));
finish(FinishType::Failed);
return false;
}
return true;
}
bool Call::checkCallFields(const MTPDphoneCallAccepted &call) {
return checkCallCommonFields(call);
}
void Call::setState(State state) {
if (_state.current() == State::Failed) {
return;
}
if (_state.current() == State::FailedHangingUp
&& state != State::Failed) {
return;
}
if (_state.current() != state) {
_state = state;
if (true
&& state != State::Starting
&& state != State::Requesting
&& state != State::Waiting
&& state != State::WaitingIncoming
&& state != State::Ringing) {
_waitingTrack.reset();
}
if (false
|| state == State::Ended
|| state == State::EndedByOtherDevice
|| state == State::Failed
|| state == State::Busy) {
// Destroy controller before destroying Call Panel,
// so that the panel hide animation is smooth.
destroyController();
}
switch (state) {
case State::Established:
_startTime = crl::now();
break;
case State::ExchangingKeys:
_delegate->callPlaySound(Delegate::CallSound::Connecting);
break;
case State::Ended:
_delegate->callPlaySound(Delegate::CallSound::Ended);
[[fallthrough]];
case State::EndedByOtherDevice:
_delegate->callFinished(this);
break;
case State::Failed:
_delegate->callPlaySound(Delegate::CallSound::Ended);
_delegate->callFailed(this);
break;
case State::Busy:
_delegate->callPlaySound(Delegate::CallSound::Busy);
_discardByTimeoutTimer.cancel();
break;
}
}
}
void Call::setCurrentAudioDevice(bool input, const QString &deviceId) {
if (_instance) {
const auto id = deviceId.toStdString();
if (input) {
_instance->setAudioInputDevice(id);
} else {
_instance->setAudioOutputDevice(id);
}
}
}
void Call::setCurrentCameraDevice(const QString &deviceId) {
if (!_videoCaptureIsScreencast) {
_videoCaptureDeviceId = deviceId;
if (_videoCapture) {
_videoCapture->switchToDevice(deviceId.toStdString(), false);
if (_instance) {
_instance->sendVideoDeviceUpdated();
}
}
}
}
//void Call::setAudioVolume(bool input, float level) {
// if (_instance) {
// if (input) {
// _instance->setInputVolume(level);
// } else {
// _instance->setOutputVolume(level);
// }
// }
//}
void Call::setAudioDuckingEnabled(bool enabled) {
if (_instance) {
_instance->setAudioOutputDuckingEnabled(enabled);
}
}
bool Call::isSharingVideo() const {
return (_videoOutgoing->state() != Webrtc::VideoState::Inactive);
}
bool Call::isSharingCamera() const {
return !_videoCaptureIsScreencast && isSharingVideo();
}
bool Call::isSharingScreen() const {
return _videoCaptureIsScreencast && isSharingVideo();
}
QString Call::cameraSharingDeviceId() const {
return isSharingCamera() ? _videoCaptureDeviceId : QString();
}
QString Call::screenSharingDeviceId() const {
return isSharingScreen() ? _videoCaptureDeviceId : QString();
}
void Call::toggleCameraSharing(bool enabled) {
if (isSharingCamera() == enabled) {
return;
} else if (!enabled) {
if (_videoCapture) {
_videoCapture->setState(tgcalls::VideoState::Inactive);
}
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
_videoCaptureDeviceId = QString();
return;
}
_delegate->callRequestPermissionsOrFail(crl::guard(this, [=] {
toggleScreenSharing(std::nullopt);
const auto deviceId = Core::App().settings().callVideoInputDeviceId();
_videoCaptureDeviceId = deviceId;
if (_videoCapture) {
_videoCapture->switchToDevice(deviceId.toStdString(), false);
if (_instance) {
_instance->sendVideoDeviceUpdated();
}
}
_videoOutgoing->setState(Webrtc::VideoState::Active);
}), true);
}
void Call::toggleScreenSharing(std::optional<QString> uniqueId) {
if (!uniqueId) {
if (isSharingScreen()) {
if (_videoCapture) {
_videoCapture->setState(tgcalls::VideoState::Inactive);
}
_videoOutgoing->setState(Webrtc::VideoState::Inactive);
}
_videoCaptureDeviceId = QString();
_videoCaptureIsScreencast = false;
return;
} else if (screenSharingDeviceId() == *uniqueId) {
return;
}
toggleCameraSharing(false);
_videoCaptureIsScreencast = true;
_videoCaptureDeviceId = *uniqueId;
if (_videoCapture) {
_videoCapture->switchToDevice(uniqueId->toStdString(), true);
if (_instance) {
_instance->sendVideoDeviceUpdated();
}
}
_videoOutgoing->setState(Webrtc::VideoState::Active);
}
void Call::finish(FinishType type, const MTPPhoneCallDiscardReason &reason) {
Expects(type != FinishType::None);
setSignalBarCount(kSignalBarFinished);
const auto finalState = (type == FinishType::Ended)
? State::Ended
: State::Failed;
const auto hangupState = (type == FinishType::Ended)
? State::HangingUp
: State::FailedHangingUp;
const auto state = _state.current();
if (state == State::Requesting) {
_finishByTimeoutTimer.call(kHangupTimeoutMs, [this, finalState] {
setState(finalState);
});
_finishAfterRequestingCall = type;
return;
}
if (state == State::HangingUp
|| state == State::FailedHangingUp
|| state == State::EndedByOtherDevice
|| state == State::Ended
|| state == State::Failed) {
return;
}
if (!_id) {
setState(finalState);
return;
}
setState(hangupState);
const auto duration = getDurationMs() / 1000;
const auto connectionId = _instance
? _instance->getPreferredRelayId()
: 0;
_finishByTimeoutTimer.call(kHangupTimeoutMs, [this, finalState] {
setState(finalState);
});
using Video = Webrtc::VideoState;
const auto flags = ((_videoIncoming->state() != Video::Inactive)
|| (_videoOutgoing->state() != Video::Inactive))
? MTPphone_DiscardCall::Flag::f_video
: MTPphone_DiscardCall::Flag(0);
// We want to discard request still being sent and processed even if
// the call is already destroyed.
const auto session = &_user->session();
const auto weak = base::make_weak(this);
session->api().request(MTPphone_DiscardCall( // We send 'discard' here.
MTP_flags(flags),
MTP_inputPhoneCall(
MTP_long(_id),
MTP_long(_accessHash)),
MTP_int(duration),
reason,
MTP_long(connectionId)
)).done([=](const MTPUpdates &result) {
// Here 'this' could be destroyed by updates, so we set Ended after
// updates being handled, but in a guarded way.
crl::on_main(weak, [=] { setState(finalState); });
session->api().applyUpdates(result);
}).fail(crl::guard(weak, [this, finalState] {
setState(finalState);
})).send();
}
void Call::setStateQueued(State state) {
crl::on_main(this, [=] {
setState(state);
});
}
void Call::setFailedQueued(const QString &error) {
crl::on_main(this, [=] {
handleControllerError(error);
});
}
void Call::handleRequestError(const QString &error) {
const auto inform = (error == u"USER_PRIVACY_RESTRICTED"_q)
? tr::lng_call_error_not_available(tr::now, lt_user, _user->name)
: (error == u"PARTICIPANT_VERSION_OUTDATED"_q)
? tr::lng_call_error_outdated(tr::now, lt_user, _user->name)
: (error == u"CALL_PROTOCOL_LAYER_INVALID"_q)
? Lang::Hard::CallErrorIncompatible().replace("{user}", _user->name)
: QString();
if (!inform.isEmpty()) {
Ui::show(Box<Ui::InformBox>(inform));
}
finish(FinishType::Failed);
}
void Call::handleControllerError(const QString &error) {
const auto inform = (error == u"ERROR_INCOMPATIBLE"_q)
? Lang::Hard::CallErrorIncompatible().replace("{user}", _user->name)
: (error == u"ERROR_AUDIO_IO"_q)
? tr::lng_call_error_audio_io(tr::now)
: QString();
if (!inform.isEmpty()) {
Ui::show(Box<Ui::InformBox>(inform));
}
finish(FinishType::Failed);
}
void Call::destroyController() {
if (_instance) {
_instance->stop([](tgcalls::FinalState) {
});
DEBUG_LOG(("Call Info: Destroying call controller.."));
_instance.reset();
DEBUG_LOG(("Call Info: Call controller destroyed."));
}
setSignalBarCount(kSignalBarFinished);
}
Call::~Call() {
destroyController();
}
void UpdateConfig(const std::string &data) {
tgcalls::SetLegacyGlobalServerConfig(data);
}
} // namespace Calls