681 lines
22 KiB
C++
681 lines
22 KiB
C++
// SPDX-FileCopyrightText: 2021 Nheko Contributors
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include <algorithm>
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#include <cctype>
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#include <chrono>
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#include <cstdint>
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#include <cstdlib>
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#include <memory>
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#include <QMediaPlaylist>
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#include <QUrl>
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#include "Cache.h"
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#include "CallDevices.h"
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#include "CallManager.h"
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#include "ChatPage.h"
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#include "Logging.h"
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#include "MatrixClient.h"
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#include "UserSettingsPage.h"
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#include "Utils.h"
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#include "mtx/responses/turn_server.hpp"
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#ifdef XCB_AVAILABLE
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#include <xcb/xcb.h>
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#include <xcb/xcb_ewmh.h>
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#endif
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#ifdef GSTREAMER_AVAILABLE
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extern "C"
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{
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#include "gst/gst.h"
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}
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#endif
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Q_DECLARE_METATYPE(std::vector<mtx::events::msg::CallCandidates::Candidate>)
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Q_DECLARE_METATYPE(mtx::events::msg::CallCandidates::Candidate)
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Q_DECLARE_METATYPE(mtx::responses::TurnServer)
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using namespace mtx::events;
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using namespace mtx::events::msg;
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using webrtc::CallType;
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namespace {
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std::vector<std::string>
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getTurnURIs(const mtx::responses::TurnServer &turnServer);
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}
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CallManager::CallManager(QObject *parent)
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: QObject(parent)
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, session_(WebRTCSession::instance())
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, turnServerTimer_(this)
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{
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qRegisterMetaType<std::vector<mtx::events::msg::CallCandidates::Candidate>>();
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qRegisterMetaType<mtx::events::msg::CallCandidates::Candidate>();
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qRegisterMetaType<mtx::responses::TurnServer>();
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connect(
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&session_,
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&WebRTCSession::offerCreated,
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this,
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[this](const std::string &sdp, const std::vector<CallCandidates::Candidate> &candidates) {
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nhlog::ui()->debug("WebRTC: call id: {} - sending offer", callid_);
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emit newMessage(roomid_, CallInvite{callid_, sdp, "0", timeoutms_});
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emit newMessage(roomid_, CallCandidates{callid_, candidates, "0"});
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std::string callid(callid_);
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QTimer::singleShot(timeoutms_, this, [this, callid]() {
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if (session_.state() == webrtc::State::OFFERSENT && callid == callid_) {
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hangUp(CallHangUp::Reason::InviteTimeOut);
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emit ChatPage::instance()->showNotification("The remote side failed to pick up.");
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}
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});
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});
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connect(
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&session_,
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&WebRTCSession::answerCreated,
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this,
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[this](const std::string &sdp, const std::vector<CallCandidates::Candidate> &candidates) {
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nhlog::ui()->debug("WebRTC: call id: {} - sending answer", callid_);
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emit newMessage(roomid_, CallAnswer{callid_, sdp, "0"});
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emit newMessage(roomid_, CallCandidates{callid_, candidates, "0"});
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});
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connect(&session_,
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&WebRTCSession::newICECandidate,
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this,
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[this](const CallCandidates::Candidate &candidate) {
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nhlog::ui()->debug("WebRTC: call id: {} - sending ice candidate", callid_);
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emit newMessage(roomid_, CallCandidates{callid_, {candidate}, "0"});
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});
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connect(&turnServerTimer_, &QTimer::timeout, this, &CallManager::retrieveTurnServer);
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connect(
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this, &CallManager::turnServerRetrieved, this, [this](const mtx::responses::TurnServer &res) {
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nhlog::net()->info("TURN server(s) retrieved from homeserver:");
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nhlog::net()->info("username: {}", res.username);
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nhlog::net()->info("ttl: {} seconds", res.ttl);
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for (const auto &u : res.uris)
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nhlog::net()->info("uri: {}", u);
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// Request new credentials close to expiry
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// See https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00
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turnURIs_ = getTurnURIs(res);
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uint32_t ttl = std::max(res.ttl, UINT32_C(3600));
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if (res.ttl < 3600)
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nhlog::net()->warn("Setting ttl to 1 hour");
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turnServerTimer_.setInterval(ttl * 1000 * 0.9);
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});
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connect(&session_, &WebRTCSession::stateChanged, this, [this](webrtc::State state) {
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switch (state) {
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case webrtc::State::DISCONNECTED:
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playRingtone(QUrl("qrc:/media/media/callend.ogg"), false);
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clear();
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break;
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case webrtc::State::ICEFAILED: {
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QString error("Call connection failed.");
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if (turnURIs_.empty())
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error += " Your homeserver has no configured TURN server.";
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emit ChatPage::instance()->showNotification(error);
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hangUp(CallHangUp::Reason::ICEFailed);
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break;
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}
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default:
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break;
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}
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emit newCallState();
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});
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connect(
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&CallDevices::instance(), &CallDevices::devicesChanged, this, &CallManager::devicesChanged);
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connect(
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&player_, &QMediaPlayer::mediaStatusChanged, this, [this](QMediaPlayer::MediaStatus status) {
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if (status == QMediaPlayer::LoadedMedia)
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player_.play();
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});
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connect(&player_,
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QOverload<QMediaPlayer::Error>::of(&QMediaPlayer::error),
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[this](QMediaPlayer::Error error) {
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stopRingtone();
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switch (error) {
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case QMediaPlayer::FormatError:
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case QMediaPlayer::ResourceError:
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nhlog::ui()->error("WebRTC: valid ringtone file not found");
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break;
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case QMediaPlayer::AccessDeniedError:
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nhlog::ui()->error("WebRTC: access to ringtone file denied");
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break;
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default:
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nhlog::ui()->error("WebRTC: unable to play ringtone");
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break;
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}
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});
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}
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void
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CallManager::sendInvite(const QString &roomid, CallType callType, unsigned int windowIndex)
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{
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if (isOnCall())
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return;
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if (callType == CallType::SCREEN) {
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if (!screenShareSupported())
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return;
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if (windows_.empty() || windowIndex >= windows_.size()) {
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nhlog::ui()->error("WebRTC: window index out of range");
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return;
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}
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}
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auto roomInfo = cache::singleRoomInfo(roomid.toStdString());
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if (roomInfo.member_count != 2) {
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emit ChatPage::instance()->showNotification("Calls are limited to 1:1 rooms.");
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return;
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}
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std::string errorMessage;
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if (!session_.havePlugins(false, &errorMessage) ||
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((callType == CallType::VIDEO || callType == CallType::SCREEN) &&
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!session_.havePlugins(true, &errorMessage))) {
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emit ChatPage::instance()->showNotification(QString::fromStdString(errorMessage));
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return;
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}
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callType_ = callType;
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roomid_ = roomid;
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session_.setTurnServers(turnURIs_);
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generateCallID();
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std::string strCallType =
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callType_ == CallType::VOICE ? "voice" : (callType_ == CallType::VIDEO ? "video" : "screen");
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nhlog::ui()->debug("WebRTC: call id: {} - creating {} invite", callid_, strCallType);
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std::vector<RoomMember> members(cache::getMembers(roomid.toStdString()));
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const RoomMember &callee =
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members.front().user_id == utils::localUser() ? members.back() : members.front();
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callParty_ = callee.user_id;
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callPartyDisplayName_ = callee.display_name.isEmpty() ? callee.user_id : callee.display_name;
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callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
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emit newInviteState();
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playRingtone(QUrl("qrc:/media/media/ringback.ogg"), true);
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if (!session_.createOffer(callType,
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callType == CallType::SCREEN ? windows_[windowIndex].second : 0)) {
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emit ChatPage::instance()->showNotification("Problem setting up call.");
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endCall();
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}
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}
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namespace {
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std::string
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callHangUpReasonString(CallHangUp::Reason reason)
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{
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switch (reason) {
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case CallHangUp::Reason::ICEFailed:
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return "ICE failed";
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case CallHangUp::Reason::InviteTimeOut:
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return "Invite time out";
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default:
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return "User";
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}
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}
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}
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void
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CallManager::hangUp(CallHangUp::Reason reason)
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{
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if (!callid_.empty()) {
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nhlog::ui()->debug(
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"WebRTC: call id: {} - hanging up ({})", callid_, callHangUpReasonString(reason));
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emit newMessage(roomid_, CallHangUp{callid_, "0", reason});
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endCall();
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}
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}
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void
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CallManager::syncEvent(const mtx::events::collections::TimelineEvents &event)
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{
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#ifdef GSTREAMER_AVAILABLE
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if (handleEvent<CallInvite>(event) || handleEvent<CallCandidates>(event) ||
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handleEvent<CallAnswer>(event) || handleEvent<CallHangUp>(event))
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return;
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#else
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(void)event;
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#endif
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}
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template<typename T>
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bool
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CallManager::handleEvent(const mtx::events::collections::TimelineEvents &event)
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{
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if (std::holds_alternative<RoomEvent<T>>(event)) {
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handleEvent(std::get<RoomEvent<T>>(event));
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return true;
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}
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return false;
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}
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void
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CallManager::handleEvent(const RoomEvent<CallInvite> &callInviteEvent)
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{
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const char video[] = "m=video";
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const std::string &sdp = callInviteEvent.content.sdp;
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bool isVideo = std::search(sdp.cbegin(),
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sdp.cend(),
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std::cbegin(video),
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std::cend(video) - 1,
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[](unsigned char c1, unsigned char c2) {
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return std::tolower(c1) == std::tolower(c2);
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}) != sdp.cend();
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nhlog::ui()->debug("WebRTC: call id: {} - incoming {} CallInvite from {}",
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callInviteEvent.content.call_id,
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(isVideo ? "video" : "voice"),
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callInviteEvent.sender);
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if (callInviteEvent.content.call_id.empty())
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return;
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auto roomInfo = cache::singleRoomInfo(callInviteEvent.room_id);
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if (isOnCall() || roomInfo.member_count != 2) {
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emit newMessage(
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QString::fromStdString(callInviteEvent.room_id),
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CallHangUp{callInviteEvent.content.call_id, "0", CallHangUp::Reason::InviteTimeOut});
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return;
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}
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const QString &ringtone = ChatPage::instance()->userSettings()->ringtone();
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if (ringtone != "Mute")
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playRingtone(ringtone == "Default" ? QUrl("qrc:/media/media/ring.ogg")
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: QUrl::fromLocalFile(ringtone),
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true);
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roomid_ = QString::fromStdString(callInviteEvent.room_id);
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callid_ = callInviteEvent.content.call_id;
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remoteICECandidates_.clear();
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std::vector<RoomMember> members(cache::getMembers(callInviteEvent.room_id));
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const RoomMember &caller =
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members.front().user_id == utils::localUser() ? members.back() : members.front();
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callParty_ = caller.user_id;
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callPartyDisplayName_ = caller.display_name.isEmpty() ? caller.user_id : caller.display_name;
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callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
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haveCallInvite_ = true;
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callType_ = isVideo ? CallType::VIDEO : CallType::VOICE;
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inviteSDP_ = callInviteEvent.content.sdp;
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emit newInviteState();
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}
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void
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CallManager::acceptInvite()
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{
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if (!haveCallInvite_)
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return;
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stopRingtone();
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std::string errorMessage;
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if (!session_.havePlugins(false, &errorMessage) ||
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(callType_ == CallType::VIDEO && !session_.havePlugins(true, &errorMessage))) {
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emit ChatPage::instance()->showNotification(QString::fromStdString(errorMessage));
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hangUp();
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return;
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}
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session_.setTurnServers(turnURIs_);
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if (!session_.acceptOffer(inviteSDP_)) {
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emit ChatPage::instance()->showNotification("Problem setting up call.");
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hangUp();
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return;
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}
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session_.acceptICECandidates(remoteICECandidates_);
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remoteICECandidates_.clear();
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haveCallInvite_ = false;
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emit newInviteState();
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}
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void
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CallManager::handleEvent(const RoomEvent<CallCandidates> &callCandidatesEvent)
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{
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if (callCandidatesEvent.sender == utils::localUser().toStdString())
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return;
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nhlog::ui()->debug("WebRTC: call id: {} - incoming CallCandidates from {}",
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callCandidatesEvent.content.call_id,
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callCandidatesEvent.sender);
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if (callid_ == callCandidatesEvent.content.call_id) {
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if (isOnCall())
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session_.acceptICECandidates(callCandidatesEvent.content.candidates);
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else {
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// CallInvite has been received and we're awaiting localUser to accept or
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// reject the call
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for (const auto &c : callCandidatesEvent.content.candidates)
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remoteICECandidates_.push_back(c);
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}
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}
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}
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void
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CallManager::handleEvent(const RoomEvent<CallAnswer> &callAnswerEvent)
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{
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nhlog::ui()->debug("WebRTC: call id: {} - incoming CallAnswer from {}",
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callAnswerEvent.content.call_id,
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callAnswerEvent.sender);
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if (callAnswerEvent.sender == utils::localUser().toStdString() &&
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callid_ == callAnswerEvent.content.call_id) {
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if (!isOnCall()) {
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emit ChatPage::instance()->showNotification("Call answered on another device.");
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stopRingtone();
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haveCallInvite_ = false;
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emit newInviteState();
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}
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return;
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}
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if (isOnCall() && callid_ == callAnswerEvent.content.call_id) {
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stopRingtone();
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if (!session_.acceptAnswer(callAnswerEvent.content.sdp)) {
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emit ChatPage::instance()->showNotification("Problem setting up call.");
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hangUp();
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}
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}
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}
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void
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CallManager::handleEvent(const RoomEvent<CallHangUp> &callHangUpEvent)
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{
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nhlog::ui()->debug("WebRTC: call id: {} - incoming CallHangUp ({}) from {}",
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callHangUpEvent.content.call_id,
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callHangUpReasonString(callHangUpEvent.content.reason),
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callHangUpEvent.sender);
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if (callid_ == callHangUpEvent.content.call_id)
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endCall();
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}
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void
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CallManager::toggleMicMute()
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{
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session_.toggleMicMute();
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emit micMuteChanged();
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}
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bool
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CallManager::callsSupported()
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{
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#ifdef GSTREAMER_AVAILABLE
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return true;
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#else
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return false;
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#endif
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}
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bool
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CallManager::screenShareSupported()
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{
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return std::getenv("DISPLAY") && !std::getenv("WAYLAND_DISPLAY");
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}
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QStringList
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CallManager::devices(bool isVideo) const
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{
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QStringList ret;
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const QString &defaultDevice = isVideo ? ChatPage::instance()->userSettings()->camera()
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: ChatPage::instance()->userSettings()->microphone();
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std::vector<std::string> devices =
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CallDevices::instance().names(isVideo, defaultDevice.toStdString());
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ret.reserve(devices.size());
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std::transform(devices.cbegin(), devices.cend(), std::back_inserter(ret), [](const auto &d) {
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return QString::fromStdString(d);
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});
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return ret;
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}
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void
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CallManager::generateCallID()
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{
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using namespace std::chrono;
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uint64_t ms = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
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callid_ = "c" + std::to_string(ms);
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}
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void
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CallManager::clear()
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{
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roomid_.clear();
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callParty_.clear();
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callPartyDisplayName_.clear();
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callPartyAvatarUrl_.clear();
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callid_.clear();
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callType_ = CallType::VOICE;
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haveCallInvite_ = false;
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emit newInviteState();
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inviteSDP_.clear();
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remoteICECandidates_.clear();
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}
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void
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CallManager::endCall()
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{
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stopRingtone();
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session_.end();
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clear();
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}
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void
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CallManager::refreshTurnServer()
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{
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turnURIs_.clear();
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turnServerTimer_.start(2000);
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}
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void
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CallManager::retrieveTurnServer()
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{
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http::client()->get_turn_server(
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[this](const mtx::responses::TurnServer &res, mtx::http::RequestErr err) {
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if (err) {
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turnServerTimer_.setInterval(5000);
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return;
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}
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emit turnServerRetrieved(res);
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});
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}
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void
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CallManager::playRingtone(const QUrl &ringtone, bool repeat)
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{
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static QMediaPlaylist playlist;
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playlist.clear();
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playlist.setPlaybackMode(repeat ? QMediaPlaylist::CurrentItemInLoop
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: QMediaPlaylist::CurrentItemOnce);
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playlist.addMedia(ringtone);
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player_.setVolume(100);
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player_.setPlaylist(&playlist);
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}
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void
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CallManager::stopRingtone()
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{
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player_.setPlaylist(nullptr);
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}
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QStringList
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CallManager::windowList()
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{
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windows_.clear();
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windows_.push_back({tr("Entire screen"), 0});
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#ifdef XCB_AVAILABLE
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std::unique_ptr<xcb_connection_t, std::function<void(xcb_connection_t *)>> connection(
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xcb_connect(nullptr, nullptr), [](xcb_connection_t *c) { xcb_disconnect(c); });
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if (xcb_connection_has_error(connection.get())) {
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nhlog::ui()->error("Failed to connect to X server");
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return {};
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}
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xcb_ewmh_connection_t ewmh;
|
|
if (!xcb_ewmh_init_atoms_replies(
|
|
&ewmh, xcb_ewmh_init_atoms(connection.get(), &ewmh), nullptr)) {
|
|
nhlog::ui()->error("Failed to connect to EWMH server");
|
|
return {};
|
|
}
|
|
std::unique_ptr<xcb_ewmh_connection_t, std::function<void(xcb_ewmh_connection_t *)>>
|
|
ewmhconnection(&ewmh, [](xcb_ewmh_connection_t *c) { xcb_ewmh_connection_wipe(c); });
|
|
|
|
for (int i = 0; i < ewmh.nb_screens; i++) {
|
|
xcb_ewmh_get_windows_reply_t clients;
|
|
if (!xcb_ewmh_get_client_list_reply(
|
|
&ewmh, xcb_ewmh_get_client_list(&ewmh, i), &clients, nullptr)) {
|
|
nhlog::ui()->error("Failed to request window list");
|
|
return {};
|
|
}
|
|
|
|
for (uint32_t w = 0; w < clients.windows_len; w++) {
|
|
xcb_window_t window = clients.windows[w];
|
|
|
|
std::string name;
|
|
xcb_ewmh_get_utf8_strings_reply_t data;
|
|
auto getName = [](xcb_ewmh_get_utf8_strings_reply_t *r) {
|
|
std::string name(r->strings, r->strings_len);
|
|
xcb_ewmh_get_utf8_strings_reply_wipe(r);
|
|
return name;
|
|
};
|
|
|
|
xcb_get_property_cookie_t cookie = xcb_ewmh_get_wm_name(&ewmh, window);
|
|
if (xcb_ewmh_get_wm_name_reply(&ewmh, cookie, &data, nullptr))
|
|
name = getName(&data);
|
|
|
|
cookie = xcb_ewmh_get_wm_visible_name(&ewmh, window);
|
|
if (xcb_ewmh_get_wm_visible_name_reply(&ewmh, cookie, &data, nullptr))
|
|
name = getName(&data);
|
|
|
|
windows_.push_back({QString::fromStdString(name), window});
|
|
}
|
|
xcb_ewmh_get_windows_reply_wipe(&clients);
|
|
}
|
|
#endif
|
|
QStringList ret;
|
|
ret.reserve(windows_.size());
|
|
for (const auto &w : windows_)
|
|
ret.append(w.first);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef GSTREAMER_AVAILABLE
|
|
namespace {
|
|
|
|
GstElement *pipe_ = nullptr;
|
|
unsigned int busWatchId_ = 0;
|
|
|
|
gboolean
|
|
newBusMessage(GstBus *bus G_GNUC_UNUSED, GstMessage *msg, gpointer G_GNUC_UNUSED)
|
|
{
|
|
switch (GST_MESSAGE_TYPE(msg)) {
|
|
case GST_MESSAGE_EOS:
|
|
if (pipe_) {
|
|
gst_element_set_state(GST_ELEMENT(pipe_), GST_STATE_NULL);
|
|
gst_object_unref(pipe_);
|
|
pipe_ = nullptr;
|
|
}
|
|
if (busWatchId_) {
|
|
g_source_remove(busWatchId_);
|
|
busWatchId_ = 0;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void
|
|
CallManager::previewWindow(unsigned int index) const
|
|
{
|
|
#ifdef GSTREAMER_AVAILABLE
|
|
if (windows_.empty() || index >= windows_.size() || !gst_is_initialized())
|
|
return;
|
|
|
|
GstElement *ximagesrc = gst_element_factory_make("ximagesrc", nullptr);
|
|
if (!ximagesrc) {
|
|
nhlog::ui()->error("Failed to create ximagesrc");
|
|
return;
|
|
}
|
|
GstElement *videoconvert = gst_element_factory_make("videoconvert", nullptr);
|
|
GstElement *videoscale = gst_element_factory_make("videoscale", nullptr);
|
|
GstElement *capsfilter = gst_element_factory_make("capsfilter", nullptr);
|
|
GstElement *ximagesink = gst_element_factory_make("ximagesink", nullptr);
|
|
|
|
g_object_set(ximagesrc, "use-damage", FALSE, nullptr);
|
|
g_object_set(ximagesrc, "show-pointer", FALSE, nullptr);
|
|
g_object_set(ximagesrc, "xid", windows_[index].second, nullptr);
|
|
|
|
GstCaps *caps = gst_caps_new_simple(
|
|
"video/x-raw", "width", G_TYPE_INT, 480, "height", G_TYPE_INT, 360, nullptr);
|
|
g_object_set(capsfilter, "caps", caps, nullptr);
|
|
gst_caps_unref(caps);
|
|
|
|
pipe_ = gst_pipeline_new(nullptr);
|
|
gst_bin_add_many(
|
|
GST_BIN(pipe_), ximagesrc, videoconvert, videoscale, capsfilter, ximagesink, nullptr);
|
|
if (!gst_element_link_many(
|
|
ximagesrc, videoconvert, videoscale, capsfilter, ximagesink, nullptr)) {
|
|
nhlog::ui()->error("Failed to link preview window elements");
|
|
gst_object_unref(pipe_);
|
|
pipe_ = nullptr;
|
|
return;
|
|
}
|
|
if (gst_element_set_state(pipe_, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
|
|
nhlog::ui()->error("Unable to start preview pipeline");
|
|
gst_object_unref(pipe_);
|
|
pipe_ = nullptr;
|
|
return;
|
|
}
|
|
|
|
GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipe_));
|
|
busWatchId_ = gst_bus_add_watch(bus, newBusMessage, nullptr);
|
|
gst_object_unref(bus);
|
|
#else
|
|
(void)index;
|
|
#endif
|
|
}
|
|
|
|
namespace {
|
|
std::vector<std::string>
|
|
getTurnURIs(const mtx::responses::TurnServer &turnServer)
|
|
{
|
|
// gstreamer expects: turn(s)://username:password@host:port?transport=udp(tcp)
|
|
// where username and password are percent-encoded
|
|
std::vector<std::string> ret;
|
|
for (const auto &uri : turnServer.uris) {
|
|
if (auto c = uri.find(':'); c == std::string::npos) {
|
|
nhlog::ui()->error("Invalid TURN server uri: {}", uri);
|
|
continue;
|
|
} else {
|
|
std::string scheme = std::string(uri, 0, c);
|
|
if (scheme != "turn" && scheme != "turns") {
|
|
nhlog::ui()->error("Invalid TURN server uri: {}", uri);
|
|
continue;
|
|
}
|
|
|
|
QString encodedUri =
|
|
QString::fromStdString(scheme) + "://" +
|
|
QUrl::toPercentEncoding(QString::fromStdString(turnServer.username)) + ":" +
|
|
QUrl::toPercentEncoding(QString::fromStdString(turnServer.password)) + "@" +
|
|
QString::fromStdString(std::string(uri, ++c));
|
|
ret.push_back(encodedUri.toStdString());
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
}
|