481 lines
18 KiB
C++
481 lines
18 KiB
C++
#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 <QMediaPlaylist>
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#include <QUrl>
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#include "Cache.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 "MainWindow.h"
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#include "MatrixClient.h"
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#include "Utils.h"
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#include "WebRTCSession.h"
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#include "dialogs/AcceptCall.h"
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#include "mtx/responses/turn_server.hpp"
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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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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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QTimer::singleShot(timeoutms_, this, [this]() {
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if (session_.state() == webrtc::State::OFFERSENT) {
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hangUp(CallHangUp::Reason::InviteTimeOut);
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emit ChatPage::instance()->showNotification(
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"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(this,
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&CallManager::turnServerRetrieved,
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this,
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[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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});
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connect(&player_,
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&QMediaPlayer::mediaStatusChanged,
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this,
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[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, bool isVideo)
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{
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if (onActiveCall())
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return;
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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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(isVideo && !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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roomid_ = roomid;
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session_.setTurnServers(turnURIs_);
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generateCallID();
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nhlog::ui()->debug(
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"WebRTC: call id: {} - creating {} invite", callid_, isVideo ? "video" : "voice");
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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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callPartyName_ = 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 newCallParty();
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playRingtone(QUrl("qrc:/media/media/ringback.ogg"), true);
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if (!session_.createOffer(isVideo)) {
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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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if (isVideo)
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emit newVideoCallState();
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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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bool
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CallManager::onActiveCall() const
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{
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return session_.state() != webrtc::State::DISCONNECTED;
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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 (onActiveCall() || roomInfo.member_count != 2) {
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emit newMessage(QString::fromStdString(callInviteEvent.room_id),
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CallHangUp{callInviteEvent.content.call_id,
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0,
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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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callPartyName_ = caller.display_name.isEmpty() ? caller.user_id : caller.display_name;
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callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
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emit newCallParty();
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auto dialog = new dialogs::AcceptCall(caller.user_id,
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caller.display_name,
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QString::fromStdString(roomInfo.name),
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QString::fromStdString(roomInfo.avatar_url),
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isVideo,
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MainWindow::instance());
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connect(dialog, &dialogs::AcceptCall::accept, this, [this, callInviteEvent, isVideo]() {
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MainWindow::instance()->hideOverlay();
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answerInvite(callInviteEvent.content, isVideo);
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});
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connect(dialog, &dialogs::AcceptCall::reject, this, [this]() {
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MainWindow::instance()->hideOverlay();
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hangUp();
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});
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MainWindow::instance()->showSolidOverlayModal(dialog);
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}
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void
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CallManager::answerInvite(const CallInvite &invite, bool isVideo)
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{
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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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(isVideo && !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(invite.sdp)) {
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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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if (isVideo)
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emit newVideoCallState();
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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 (onActiveCall())
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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 (!onActiveCall() && callAnswerEvent.sender == utils::localUser().toStdString() &&
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callid_ == callAnswerEvent.content.call_id) {
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emit ChatPage::instance()->showNotification("Call answered on another device.");
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stopRingtone();
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MainWindow::instance()->hideOverlay();
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return;
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}
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if (onActiveCall() && 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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MainWindow::instance()->hideOverlay();
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endCall();
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}
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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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callPartyName_.clear();
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callPartyAvatarUrl_.clear();
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callid_.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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clear();
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bool isVideo = session_.isVideo();
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session_.end();
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if (isVideo)
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emit newVideoCallState();
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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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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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// gstreamer expects: turn(s)://username:password@host:port?transport=udp(tcp)
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// where username and password are percent-encoded
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std::vector<std::string> ret;
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for (const auto &uri : turnServer.uris) {
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if (auto c = uri.find(':'); c == std::string::npos) {
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nhlog::ui()->error("Invalid TURN server uri: {}", uri);
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continue;
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} else {
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std::string scheme = std::string(uri, 0, c);
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if (scheme != "turn" && scheme != "turns") {
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nhlog::ui()->error("Invalid TURN server uri: {}", uri);
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continue;
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}
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QString encodedUri =
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QString::fromStdString(scheme) + "://" +
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QUrl::toPercentEncoding(QString::fromStdString(turnServer.username)) +
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":" +
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QUrl::toPercentEncoding(QString::fromStdString(turnServer.password)) +
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"@" + QString::fromStdString(std::string(uri, ++c));
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ret.push_back(encodedUri.toStdString());
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}
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}
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return ret;
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}
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}
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