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// Copyright 2021-2022 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "ServerInformation.h"
#include "CELTCodec.h"
#include "Connection.h"
#include "MainWindow.h"
#include "NetworkConfig.h"
#include "SSL.h"
#include "ServerHandler.h"
#include "UserModel.h"
#include "Version.h"
#include "ViewCert.h"
#include "Global.h"
#include <QTableWidgetItem>
#include <boost/accumulators/accumulators.hpp>
#include <cmath>
QString ServerInformation::m_unknownStr = tr("Unknown");
ServerInformation::ServerInformation(QWidget *parent) : QDialog(parent) {
setupUi(this);
updateFields();
}
void ServerInformation::updateFields() {
updateServerInformation();
updateAudioBandwidth();
updateConnectionDetails();
}
void ServerInformation::on_okButton_clicked() {
accept();
}
void ServerInformation::on_viewCertButton_clicked() {
hide();
ViewCert certViewer(Global::get().sh->qscCert, this);
certViewer.exec();
accept();
}
void ServerInformation::updateServerInformation() {
QString host, userName, password;
unsigned short port;
Global::get().sh->getConnectionInfo(host, port, userName, password);
const int userCount = ModelItem::c_qhUsers.count();
const unsigned int maxUserCount = Global::get().uiMaxUsers;
QString release = Global::get().sh->qsRelease;
if (release.isEmpty()) {
release = m_unknownStr;
}
QString os = Global::get().sh->qsOS;
if (os.isEmpty()) {
os = m_unknownStr;
} else if (!Global::get().sh->qsOSVersion.isEmpty()) {
os += QString::fromLatin1(" (%1)").arg(Global::get().sh->qsOSVersion);
}
serverInfo_host->setText(host);
serverInfo_port->setText(QString::number(port));
serverInfo_users->setText(QString::fromLatin1("%1 / %2").arg(userCount).arg(maxUserCount));
serverInfo_protocol->setText(Version::toString(Global::get().sh->m_version));
serverInfo_release->setText(release);
serverInfo_os->setText(os);
}
static const QString currentCodec() {
if (Global::get().bOpus)
return QLatin1String("Opus");
int v = Global::get().bPreferAlpha ? Global::get().iCodecAlpha : Global::get().iCodecBeta;
CELTCodec *cc = Global::get().qmCodecs.value(v);
if (cc)
return QString::fromLatin1("CELT %1").arg(cc->version());
else
return QString::fromLatin1("CELT %1").arg(QString::number(v, 16));
}
void ServerInformation::updateAudioBandwidth() {
// The bandwidths are in bit/s, so we divide by 1000 to get kBit/s
const float maxBandwidthAllowed = Global::get().iMaxBandwidth / 1000.0f;
const float currentBandwidth = Global::get().iAudioBandwidth / 1000.0f;
audio_current->setText(QString::fromLatin1("%1 kBit/s").arg(currentBandwidth, 0, 'f', 1));
audio_allowed->setText(QString::fromLatin1("%1 kBit/s").arg(maxBandwidthAllowed, 0, 'f', 1));
audio_codec->setText(currentCodec());
}
void ServerInformation::updateConnectionDetails() {
QString latencyString = QString::fromUtf8("%1 ms (σ = %2 ms)");
const ConnectionPtr connection = Global::get().sh->cConnection;
if (!connection) {
return;
}
// UDP
if (NetworkConfig::TcpModeEnabled()) {
connection_udp_infoMessage->show();
connection_udp_encryption->hide();
connection_udp_encryptionLabel->hide();
connection_udp_latency->hide();
connection_udp_latencyLabel->hide();
connection_udp_statisticsGroup->hide();
} else {
connection_udp_infoMessage->hide();
connection_udp_encryption->show();
connection_udp_encryptionLabel->show();
connection_udp_latency->show();
connection_udp_latencyLabel->show();
connection_udp_statisticsGroup->show();
// Actually fill in data
const float latency = boost::accumulators::mean(Global::get().sh->accUDP);
const float deviation = std::sqrt(boost::accumulators::variance(Global::get().sh->accUDP));
connection_udp_encryption->setText("128 bit OCB-AES128");
connection_udp_latency->setText(latencyString.arg(latency, 0, 'f', 1).arg(deviation, 0, 'f', 1));
populateUDPStatistics(*connection);
}
// TCP
const float latency = boost::accumulators::mean(Global::get().sh->accTCP);
const float deviation = std::sqrt(boost::accumulators::variance(Global::get().sh->accTCP));
QSslCipher cipher = Global::get().sh->qscCipher;
connection_tcp_tls->setText(MumbleSSL::protocolToString(connection->sessionProtocol()).toHtmlEscaped());
connection_tcp_latency->setText(latencyString.arg(latency, 0, 'f', 1).arg(deviation, 0, 'f', 1));
connection_tcp_cipher->setText(cipher.name().isEmpty() ? m_unknownStr : cipher.name());
#if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
connection_tcp_forwardSecrecy->setText(Global::get().sh->connectionUsesPerfectForwardSecrecy ? tr("Yes")
: tr("No"));
#else
// The Qt function we use to query for PFS inside ServerHandler is only available since Qt 5.7 and if it is
// unavailable, the respective boolean flag is never touched and is therefore meaningless.
connection_tcp_forwardSecrecy->setText(tr("Unknown"));
#endif
}
void ServerInformation::populateUDPStatistics(const Connection &connection) {
// statistics
constexpr int TO_SERVER_COL = 0;
constexpr int FROM_SERVER_COL = 1;
constexpr int GOOD_ROW = 0;
constexpr int LATE_ROW = 1;
constexpr int LOST_ROW = 2;
constexpr int RESYNC_ROW = 3;
QTableWidgetItem *toGoodItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiRemoteGood));
QTableWidgetItem *fromGoodItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiGood));
QTableWidgetItem *toLateItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiRemoteLate));
QTableWidgetItem *fromLateItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiLate));
QTableWidgetItem *toLostItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiRemoteLost));
QTableWidgetItem *fromLostItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiLost));
QTableWidgetItem *toResyncItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiRemoteResync));
QTableWidgetItem *fromResyncItem = new QTableWidgetItem(QString::number(connection.csCrypt->uiResync));
connection_udp_statisticsTable->setItem(GOOD_ROW, TO_SERVER_COL, toGoodItem);
connection_udp_statisticsTable->setItem(GOOD_ROW, FROM_SERVER_COL, fromGoodItem);
connection_udp_statisticsTable->setItem(LATE_ROW, TO_SERVER_COL, toLateItem);
connection_udp_statisticsTable->setItem(LATE_ROW, FROM_SERVER_COL, fromLateItem);
connection_udp_statisticsTable->setItem(LOST_ROW, TO_SERVER_COL, toLostItem);
connection_udp_statisticsTable->setItem(LOST_ROW, FROM_SERVER_COL, fromLostItem);
connection_udp_statisticsTable->setItem(RESYNC_ROW, TO_SERVER_COL, toResyncItem);
connection_udp_statisticsTable->setItem(RESYNC_ROW, FROM_SERVER_COL, fromResyncItem);
connection_udp_statisticsTable->adjustSize();
}
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