mirrors/mumble
2
0
Fork 0
mirror of https://github.com/mumble-voip/mumble.git synced 2025-10-26 11:19:16 +00:00
Code Issues Packages Projects Releases Wiki Activity
b47e309f31
mumble/src/murmur/Server.cpp
MadMaurice b47e309f31 FIX(certificate): Retrieve QSslConfiguration after setting CA 
Commit bdb12c6 added a regression for servers built with QT older than version
5.15. After this commit these servers do not serve intermediate certificates
anymore.  This happens because the QSslConfiguration is retrieved before adding
the CA certificates to the socket and is reinserted into the socket again after
adding the CA certificates, thereby overwriting the CA certificates added in
between.

This commit fixes that by retrieving the QSslConfiguration just after setting
the CA certificates in case an older QT version than 5.15 is used.
2020-08-11 23:06:25 +02:00

2255 lines
67 KiB
C++
Raw Blame History

// Copyright 2005-2020 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 "Server.h"
#include "ACL.h"
#include "Connection.h"
#include "Group.h"
#include "User.h"
#include "Channel.h"
#include "Message.h"
#include "Meta.h"
#include "PacketDataStream.h"
#include "ServerDB.h"
#include "ServerUser.h"
#include "Version.h"
#include "HTMLFilter.h"
#include "HostAddress.h"
#include "ChannelListener.h"
#include "SpeechFlags.h"
#include "EnvUtils.h"
#ifdef USE_BONJOUR
# include "BonjourServer.h"
# include "BonjourServiceRegister.h"
#endif
#include "Utils.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QXmlStreamAttributes>
#include <QtCore/QtEndian>
#include <QtCore/QSet>
#include <QtNetwork/QHostInfo>
#include <QtNetwork/QSslConfiguration>
#include <boost/bind.hpp>
#ifdef Q_OS_WIN
# include <qos2.h>
# include <ws2tcpip.h>
#else
# include <netinet/in.h>
# include <poll.h>
#endif
#ifndef MAX
# define MAX(a,b) ((a)>(b) ? (a):(b))
#endif
#define UDP_PACKET_SIZE 1024
ExecEvent::ExecEvent(boost::function<void ()> f) : QEvent(static_cast<QEvent::Type>(EXEC_QEVENT)) {
func = f;
}
void ExecEvent::execute() {
func();
}
SslServer::SslServer(QObject *p) : QTcpServer(p) {
}
bool SslServer::hasDualStackSupport() {
// Create a AF_INET6 socket and try to switch off IPV6_V6ONLY. This
// should only fail if the system does not support dual-stack mode
// for this socket type.
bool result = false;
#ifdef Q_OS_UNIX
int s = ::socket(AF_INET6, SOCK_STREAM, 0);
if (s != -1) {
const int ipv6only = 0;
if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char*>(&ipv6only), sizeof(ipv6only)) == 0) {
result = true;
}
::close(s);
}
#else
WSADATA wsaData;
WORD wVersionRequested = MAKEWORD(2, 2);
if (WSAStartup(wVersionRequested, &wsaData) != 0) {
// Seems like we won't be doing any network stuff anyways
return false;
}
SOCKET s = ::WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, nullptr, 0, WSA_FLAG_OVERLAPPED);
if (s != INVALID_SOCKET) {
const int ipv6only = 0;
if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char*>(&ipv6only), sizeof(ipv6only)) == 0) {
result = true;
}
closesocket(s);
}
WSACleanup();
#endif
return result;
}
void SslServer::incomingConnection(qintptr v) {
QSslSocket *s = new QSslSocket(this);
s->setSocketDescriptor(v);
qlSockets.append(s);
}
QSslSocket *SslServer::nextPendingSSLConnection() {
if (qlSockets.isEmpty())
return nullptr;
return qlSockets.takeFirst();
}
Server::Server(int snum, QObject *p) : QThread(p) {
bValid = true;
iServerNum = snum;
#ifdef USE_BONJOUR
bsRegistration = nullptr;
#endif
bUsingMetaCert = false;
#ifdef Q_OS_UNIX
aiNotify[0] = aiNotify[1] = -1;
#else
hNotify = nullptr;
#endif
qtTimeout = new QTimer(this);
iCodecAlpha = iCodecBeta = 0;
bPreferAlpha = false;
bOpus = true;
qnamNetwork = nullptr;
readParams();
initialize();
foreach(const QHostAddress &qha, qlBind) {
SslServer *ss = new SslServer(this);
connect(ss, SIGNAL(newConnection()), this, SLOT(newClient()), Qt::QueuedConnection);
if (! ss->listen(qha, usPort)) {
log(QString("Server: TCP Listen on %1 failed: %2").arg(addressToString(qha,usPort), ss->errorString()));
bValid = false;
} else {
log(QString("Server listening on %1").arg(addressToString(qha,usPort)));
}
qlServer << ss;
}
if (! bValid)
return;
foreach(SslServer *ss, qlServer) {
sockaddr_storage addr;
#ifdef Q_OS_UNIX
int tcpsock = static_cast<int>(ss->socketDescriptor());
socklen_t len = sizeof(addr);
#else
SOCKET tcpsock = ss->socketDescriptor();
int len = sizeof(addr);
#endif
memset(&addr, 0, sizeof(addr));
getsockname(tcpsock, reinterpret_cast<struct sockaddr *>(&addr), &len);
#ifdef Q_OS_UNIX
int sock = ::socket(addr.ss_family, SOCK_DGRAM, 0);
#ifdef Q_OS_LINUX
int sockopt = 1;
if (setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &sockopt, sizeof(sockopt)))
log(QString("Failed to set IP_PKTINFO for %1").arg(addressToString(ss->serverAddress(), usPort)));
sockopt = 1;
if (setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &sockopt, sizeof(sockopt)))
log(QString("Failed to set IPV6_RECVPKTINFO for %1").arg(addressToString(ss->serverAddress(), usPort)));
#endif
#else
#ifndef SIO_UDP_CONNRESET
#define SIO_UDP_CONNRESET _WSAIOW(IOC_VENDOR,12)
#endif
SOCKET sock = ::WSASocket(addr.ss_family, SOCK_DGRAM, IPPROTO_UDP, nullptr, 0, WSA_FLAG_OVERLAPPED);
DWORD dwBytesReturned = 0;
BOOL bNewBehaviour = FALSE;
if (WSAIoctl(sock, SIO_UDP_CONNRESET, &bNewBehaviour, sizeof(bNewBehaviour), nullptr, 0, &dwBytesReturned, nullptr, nullptr) == SOCKET_ERROR) {
log(QString("Failed to set SIO_UDP_CONNRESET: %1").arg(WSAGetLastError()));
}
#endif
if (sock == INVALID_SOCKET) {
log("Failed to create UDP Socket");
bValid = false;
return;
} else {
if (addr.ss_family == AF_INET6) {
// Copy IPV6_V6ONLY attribute from tcp socket, it defaults to nonzero on Windows
// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms738574%28v=vs.85%29.aspx
// This will fail for WindowsXP which is ok. Our TCP code will have split that up
// into two sockets.
int ipv6only = 0;
socklen_t optlen = sizeof(ipv6only);
if (::getsockopt(tcpsock, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<char*>(&ipv6only), &optlen) == 0) {
if (::setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char*>(&ipv6only), optlen) == SOCKET_ERROR) {
log(QString("Failed to copy IPV6_V6ONLY socket attribute from tcp to udp socket"));
}
}
}
if (::bind(sock, reinterpret_cast<sockaddr *>(&addr), len) == SOCKET_ERROR) {
log(QString("Failed to bind UDP Socket to %1").arg(addressToString(ss->serverAddress(), usPort)));
} else {
#ifdef Q_OS_UNIX
int val = 0xe0;
if (setsockopt(sock, IPPROTO_IP, IP_TOS, &val, sizeof(val))) {
val = 0x80;
if (setsockopt(sock, IPPROTO_IP, IP_TOS, &val, sizeof(val)))
log("Server: Failed to set TOS for UDP Socket");
}
#if defined(SO_PRIORITY)
socklen_t optlen = sizeof(val);
if (getsockopt(sock, SOL_SOCKET, SO_PRIORITY, &val, &optlen) == 0) {
if (val == 0) {
val = 6;
setsockopt(sock, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val));
}
}
#endif
#endif
}
QSocketNotifier *qsn = new QSocketNotifier(sock, QSocketNotifier::Read, this);
connect(qsn, SIGNAL(activated(int)), this, SLOT(udpActivated(int)));
qlUdpSocket << sock;
qlUdpNotifier << qsn;
}
}
bValid = bValid && (qlServer.count() == qlBind.count()) && (qlUdpSocket.count() == qlBind.count());
if (! bValid)
return;
#ifdef Q_OS_UNIX
if (socketpair(AF_UNIX, SOCK_STREAM, 0, aiNotify) != 0) {
log("Failed to create notify socket");
bValid = false;
return;
}
#else
hNotify = CreateEvent(nullptr, FALSE, FALSE, nullptr);
#endif
connect(this, SIGNAL(tcpTransmit(QByteArray, unsigned int)), this, SLOT(tcpTransmitData(QByteArray, unsigned int)), Qt::QueuedConnection);
connect(this, SIGNAL(reqSync(unsigned int)), this, SLOT(doSync(unsigned int)));
for (int i=1;i<iMaxUsers*2;++i)
qqIds.enqueue(i);
connect(qtTimeout, SIGNAL(timeout()), this, SLOT(checkTimeout()));
getBans();
readChannels();
readLinks();
initializeCert();
int major, minor, patch;
QString release;
Meta::getVersion(major, minor, patch, release);
uiVersionBlob = qToBigEndian(static_cast<quint32>((major<<16) | (minor << 8) | patch));
if (bValid) {
#ifdef USE_BONJOUR
if (bBonjour)
initBonjour();
#endif
initRegister();
}
}
void Server::startThread() {
if (! isRunning()) {
log("Starting voice thread");
bRunning = true;
foreach(QSocketNotifier *qsn, qlUdpNotifier)
qsn->setEnabled(false);
start(QThread::HighestPriority);
#ifdef Q_OS_LINUX
// QThread::HighestPriority == Same as everything else...
int policy;
struct sched_param param;
if (pthread_getschedparam(pthread_self(), &policy, &param) == 0) {
if (policy == SCHED_OTHER) {
policy = SCHED_FIFO;
param.sched_priority = 1;
pthread_setschedparam(pthread_self(), policy, &param);
}
}
#endif
}
if (! qtTimeout->isActive())
qtTimeout->start(15500);
}
void Server::stopThread() {
bRunning = false;
if (isRunning()) {
log("Ending voice thread");
#ifdef Q_OS_UNIX
unsigned char val = 0;
if (::write(aiNotify[1], &val, 1) != 1)
log("Failed to signal voice thread");
#else
SetEvent(hNotify);
#endif
wait();
foreach(QSocketNotifier *qsn, qlUdpNotifier)
qsn->setEnabled(true);
}
qtTimeout->stop();
}
Server::~Server() {
#ifdef USE_BONJOUR
removeBonjour();
#endif
stopThread();
foreach(QSocketNotifier *qsn, qlUdpNotifier)
delete qsn;
#ifdef Q_OS_UNIX
foreach(int s, qlUdpSocket)
close(s);
if (aiNotify[0] >= 0)
close(aiNotify[0]);
if (aiNotify[1] >= 0)
close(aiNotify[1]);
#else
foreach(SOCKET s, qlUdpSocket)
closesocket(s);
if (hNotify)
CloseHandle(hNotify);
#endif
clearACLCache();
log("Stopped");
}
/// normalizeSuggestVersion normalizes a 'suggestversion' config value.
/// The config value may be a version string, or a bitmasked
/// integer representing the version.
/// This function converts the 'suggestversion' config value to
/// always be a bitmasked integer representation.
///
/// On error, the function returns an empty QVariant.
static QVariant normalizeSuggestVersion(QVariant suggestVersion) {
uint integerValue = suggestVersion.toUInt();
// If the integer value is 0, it can mean two things:
//
// Either the suggestversion is set to 0.
// Or, the suggestversion is a version string such as "1.3.0",
// and cannot be converted to an integer value.
//
// We handle both cases the same: by pretending the
// suggestversion is a version string in both cases.
//
// If it is a version string, the call to MumbleVersion::getRaw()
// will return the bitmasked representation.
//
// If it is not a version string, the call to MumbleVersion::getRaw()
// will return 0, so it is effectively a no-op.
if (integerValue == 0) {
integerValue = MumbleVersion::getRaw(suggestVersion.toString());
}
if (integerValue != 0) {
return integerValue;
}
return QVariant();
}
void Server::readParams() {
qsPassword = Meta::mp.qsPassword;
usPort = static_cast<unsigned short>(Meta::mp.usPort + iServerNum - 1);
iTimeout = Meta::mp.iTimeout;
iMaxBandwidth = Meta::mp.iMaxBandwidth;
iMaxUsers = Meta::mp.iMaxUsers;
iMaxUsersPerChannel = Meta::mp.iMaxUsersPerChannel;
iMaxTextMessageLength = Meta::mp.iMaxTextMessageLength;
iMaxImageMessageLength = Meta::mp.iMaxImageMessageLength;
bAllowHTML = Meta::mp.bAllowHTML;
iDefaultChan = Meta::mp.iDefaultChan;
bRememberChan = Meta::mp.bRememberChan;
iRememberChanDuration = Meta::mp.iRememberChanDuration;
qsWelcomeText = Meta::mp.qsWelcomeText;
qsWelcomeTextFile = Meta::mp.qsWelcomeTextFile;
qlBind = Meta::mp.qlBind;
qsRegName = Meta::mp.qsRegName;
qsRegPassword = Meta::mp.qsRegPassword;
qsRegHost = Meta::mp.qsRegHost;
qsRegLocation = Meta::mp.qsRegLocation;
qurlRegWeb = Meta::mp.qurlRegWeb;
bBonjour = Meta::mp.bBonjour;
bAllowPing = Meta::mp.bAllowPing;
bCertRequired = Meta::mp.bCertRequired;
bForceExternalAuth = Meta::mp.bForceExternalAuth;
qrUserName = Meta::mp.qrUserName;
qrChannelName = Meta::mp.qrChannelName;
iMessageLimit = Meta::mp.iMessageLimit;
iMessageBurst = Meta::mp.iMessageBurst;
qvSuggestVersion = Meta::mp.qvSuggestVersion;
qvSuggestPositional = Meta::mp.qvSuggestPositional;
qvSuggestPushToTalk = Meta::mp.qvSuggestPushToTalk;
iOpusThreshold = Meta::mp.iOpusThreshold;
iChannelNestingLimit = Meta::mp.iChannelNestingLimit;
iChannelCountLimit = Meta::mp.iChannelCountLimit;
QString qsHost = getConf("host", QString()).toString();
if (! qsHost.isEmpty()) {
qlBind.clear();
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
foreach(const QString &host, qsHost.split(QRegExp(QLatin1String("\\s+")), Qt::SkipEmptyParts)) {
#else
// Qt 5.14 introduced the Qt::SplitBehavior flags deprecating the QString fields
foreach(const QString &host, qsHost.split(QRegExp(QLatin1String("\\s+")), QString::SkipEmptyParts)) {
#endif
QHostAddress qhaddr;
if (qhaddr.setAddress(qsHost)) {
qlBind << qhaddr;
} else {
bool found = false;
QHostInfo hi = QHostInfo::fromName(host);
foreach(QHostAddress qha, hi.addresses()) {
if ((qha.protocol() == QAbstractSocket::IPv4Protocol) || (qha.protocol() == QAbstractSocket::IPv6Protocol)) {
qlBind << qha;
found = true;
}
}
if (! found) {
log(QString("Lookup of bind hostname %1 failed").arg(host));
}
}
}
foreach(const QHostAddress &qha, qlBind)
log(QString("Binding to address %1").arg(qha.toString()));
if (qlBind.isEmpty())
qlBind = Meta::mp.qlBind;
}
qsPassword = getConf("password", qsPassword).toString();
usPort = static_cast<unsigned short>(getConf("port", usPort).toUInt());
iTimeout = getConf("timeout", iTimeout).toInt();
iMaxBandwidth = getConf("bandwidth", iMaxBandwidth).toInt();
iMaxUsers = getConf("users", iMaxUsers).toInt();
iMaxUsersPerChannel = getConf("usersperchannel", iMaxUsersPerChannel).toInt();
iMaxTextMessageLength = getConf("textmessagelength", iMaxTextMessageLength).toInt();
iMaxImageMessageLength = getConf("imagemessagelength", iMaxImageMessageLength).toInt();
bAllowHTML = getConf("allowhtml", bAllowHTML).toBool();
iDefaultChan = getConf("defaultchannel", iDefaultChan).toInt();
bRememberChan = getConf("rememberchannel", bRememberChan).toBool();
iRememberChanDuration = getConf("rememberchannelduration", iRememberChanDuration).toInt();
qsWelcomeText = getConf("welcometext", qsWelcomeText).toString();
qsWelcomeTextFile = getConf("welcometextfile", qsWelcomeTextFile).toString();
if (!qsWelcomeTextFile.isEmpty()) {
if (qsWelcomeText.isEmpty()) {
QFile f(qsWelcomeTextFile);
if (f.open(QFile::ReadOnly | QFile::Text)) {
QTextStream in(&f);
qsWelcomeText = in.readAll();
f.close();
} else {
log(QString("Failed to open welcome text file %1").arg(qsWelcomeTextFile));
}
} else {
log(QString("Ignoring welcometextfile %1 because welcometext is defined").arg(qsWelcomeTextFile));
}
}
qsRegName = getConf("registername", qsRegName).toString();
qsRegPassword = getConf("registerpassword", qsRegPassword).toString();
qsRegHost = getConf("registerhostname", qsRegHost).toString();
qsRegLocation = getConf("registerlocation", qsRegLocation).toString();
qurlRegWeb = QUrl(getConf("registerurl", qurlRegWeb.toString()).toString());
bBonjour = getConf("bonjour", bBonjour).toBool();
bAllowPing = getConf("allowping", bAllowPing).toBool();
bCertRequired = getConf("certrequired", bCertRequired).toBool();
bForceExternalAuth = getConf("forceExternalAuth", bForceExternalAuth).toBool();
qvSuggestVersion = normalizeSuggestVersion(getConf("suggestversion", qvSuggestVersion));
if (qvSuggestVersion.toUInt() == 0)
qvSuggestVersion = QVariant();
qvSuggestPositional = getConf("suggestpositional", qvSuggestPositional);
if (qvSuggestPositional.toString().trimmed().isEmpty())
qvSuggestPositional = QVariant();
qvSuggestPushToTalk = getConf("suggestpushtotalk", qvSuggestPushToTalk);
if (qvSuggestPushToTalk.toString().trimmed().isEmpty())
qvSuggestPushToTalk = QVariant();
iOpusThreshold = getConf("opusthreshold", iOpusThreshold).toInt();
iChannelNestingLimit = getConf("channelnestinglimit", iChannelNestingLimit).toInt();
iChannelCountLimit = getConf("channelcountlimit", iChannelCountLimit).toInt();
qrUserName=QRegExp(getConf("username", qrUserName.pattern()).toString());
qrChannelName=QRegExp(getConf("channelname", qrChannelName.pattern()).toString());
iMessageLimit=getConf("messagelimit", iMessageLimit).toUInt();
if (iMessageLimit < 1) { // Prevent disabling messages entirely
iMessageLimit = 1;
}
iMessageBurst=getConf("messageburst", iMessageBurst).toUInt();
if (iMessageBurst < 1) { // Prevent disabling messages entirely
iMessageBurst = 1;
}
}
void Server::setLiveConf(const QString &key, const QString &value) {
QString v = value.trimmed().isEmpty() ? QString() : value;
int i = v.toInt();
if ((key == "password") || (key == "serverpassword"))
qsPassword = !v.isNull() ? v : Meta::mp.qsPassword;
else if (key == "timeout")
iTimeout = i ? i : Meta::mp.iTimeout;
else if (key == "bandwidth") {
int length = i ? i : Meta::mp.iMaxBandwidth;
if (length != iMaxBandwidth) {
iMaxBandwidth = length;
MumbleProto::ServerConfig mpsc;
mpsc.set_max_bandwidth(length);
sendAll(mpsc);
}
} else if (key == "users") {
int newmax = i ? i : Meta::mp.iMaxUsers;
if (iMaxUsers == newmax)
return;
iMaxUsers = newmax;
qqIds.clear();
for (int id = 1; id < iMaxUsers * 2; ++id)
if (!qhUsers.contains(id))
qqIds.enqueue(id);
MumbleProto::ServerConfig mpsc;
mpsc.set_max_users(iMaxUsers);
sendAll(mpsc);
} else if (key == "usersperchannel")
iMaxUsersPerChannel = i ? i : Meta::mp.iMaxUsersPerChannel;
else if (key == "textmessagelength") {
int length = i ? i : Meta::mp.iMaxTextMessageLength;
if (length != iMaxTextMessageLength) {
iMaxTextMessageLength = length;
MumbleProto::ServerConfig mpsc;
mpsc.set_message_length(length);
sendAll(mpsc);
}
} else if (key == "imagemessagelength") {
int length = i ? i : Meta::mp.iMaxImageMessageLength;
if (length != iMaxImageMessageLength) {
iMaxImageMessageLength = length;
MumbleProto::ServerConfig mpsc;
mpsc.set_image_message_length(length);
sendAll(mpsc);
}
} else if (key == "allowhtml") {
bool allow = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bAllowHTML;
if (allow != bAllowHTML) {
bAllowHTML = allow;
MumbleProto::ServerConfig mpsc;
mpsc.set_allow_html(bAllowHTML);
sendAll(mpsc);
}
} else if (key == "defaultchannel")
iDefaultChan = i ? i : Meta::mp.iDefaultChan;
else if (key == "rememberchannel")
bRememberChan = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bRememberChan;
else if (key == "rememberchannelduration") {
iRememberChanDuration = !v.isNull() ? v.toInt() : Meta::mp.iRememberChanDuration;
if (iRememberChanDuration < 0) {
iRememberChanDuration = 0;
}
} else if (key == "welcometext") {
QString text = !v.isNull() ? v : Meta::mp.qsWelcomeText;
if (text != qsWelcomeText) {
qsWelcomeText = text;
MumbleProto::ServerConfig mpsc;
mpsc.set_welcome_text(u8(qsWelcomeText));
sendAll(mpsc);
}
} else if (key == "registername") {
QString text = !v.isNull() ? v : Meta::mp.qsRegName;
if (text != qsRegName) {
qsRegName = text;
if (! qsRegName.isEmpty()) {
MumbleProto::ChannelState mpcs;
mpcs.set_channel_id(0);
mpcs.set_name(u8(qsRegName));
sendAll(mpcs);
}
}
} else if (key == "registerpassword")
qsRegPassword = !v.isNull() ? v : Meta::mp.qsRegPassword;
else if (key == "registerhostname")
qsRegHost = !v.isNull() ? v : Meta::mp.qsRegHost;
else if (key == "registerlocation")
qsRegLocation = !v.isNull() ? v : Meta::mp.qsRegLocation;
else if (key == "registerurl")
qurlRegWeb = !v.isNull() ? v : Meta::mp.qurlRegWeb;
else if (key == "certrequired")
bCertRequired = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bCertRequired;
else if (key == "forceExternalAuth")
bForceExternalAuth = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bForceExternalAuth;
else if (key == "bonjour") {
bBonjour = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bBonjour;
#ifdef USE_BONJOUR
if (bBonjour && !bsRegistration)
initBonjour();
else if (!bBonjour && bsRegistration)
removeBonjour();
#endif
} else if (key == "allowping")
bAllowPing = !v.isNull() ? QVariant(v).toBool() : Meta::mp.bAllowPing;
else if (key == "username")
qrUserName=!v.isNull() ? QRegExp(v) : Meta::mp.qrUserName;
else if (key == "channelname")
qrChannelName=!v.isNull() ? QRegExp(v) : Meta::mp.qrChannelName;
else if (key == "suggestversion")
qvSuggestVersion = ! v.isNull() ? (v.isEmpty() ? QVariant() : normalizeSuggestVersion(v)) : Meta::mp.qvSuggestVersion;
else if (key == "suggestpositional")
qvSuggestPositional = ! v.isNull() ? (v.isEmpty() ? QVariant() : v) : Meta::mp.qvSuggestPositional;
else if (key == "suggestpushtotalk")
qvSuggestPushToTalk = ! v.isNull() ? (v.isEmpty() ? QVariant() : v) : Meta::mp.qvSuggestPushToTalk;
else if (key == "opusthreshold")
iOpusThreshold = (i >= 0 && !v.isNull()) ? qBound(0, i, 100) : Meta::mp.iOpusThreshold;
else if (key == "channelnestinglimit")
iChannelNestingLimit = (i >= 0 && !v.isNull()) ? i : Meta::mp.iChannelNestingLimit;
else if (key == "channelcountlimit")
iChannelCountLimit = (i >= 0 && !v.isNull()) ? i : Meta::mp.iChannelCountLimit;
else if (key == "messagelimit") {
iMessageLimit = (!v.isNull()) ? v.toUInt() : Meta::mp.iMessageLimit;
if (iMessageLimit < 1) {
iMessageLimit = 1;
}
} else if (key == "messageburst") {
iMessageBurst = (!v.isNull()) ? v.toUInt() : Meta::mp.iMessageBurst;
if (iMessageBurst < 1) {
iMessageBurst = 1;
}
}
}
#ifdef USE_BONJOUR
void Server::initBonjour() {
bsRegistration = new BonjourServer();
if (bsRegistration->bsrRegister) {
log("Announcing server via bonjour");
bsRegistration->bsrRegister->registerService(BonjourRecord(qsRegName, "_mumble._tcp", ""),
usPort);
}
}
void Server::removeBonjour() {
delete bsRegistration;
bsRegistration = nullptr;
log("Stopped announcing server via bonjour");
}
#endif
void Server::customEvent(QEvent *evt) {
if (evt->type() == EXEC_QEVENT)
static_cast<ExecEvent *>(evt)->execute();
}
void Server::udpActivated(int socket) {
qint32 len;
char encrypt[UDP_PACKET_SIZE];
sockaddr_storage from;
#ifdef Q_OS_UNIX
#ifdef Q_OS_LINUX
struct msghdr msg;
struct iovec iov[1];
iov[0].iov_base = encrypt;
iov[0].iov_len = UDP_PACKET_SIZE;
u_char controldata[CMSG_SPACE(MAX(sizeof(struct in6_pktinfo),sizeof(struct in_pktinfo)))];
memset(&msg, 0, sizeof(msg));
msg.msg_name = reinterpret_cast<struct sockaddr *>(&from);
msg.msg_namelen = sizeof(from);
msg.msg_iov = iov;
msg.msg_iovlen = 1;
msg.msg_control = controldata;
msg.msg_controllen = sizeof(controldata);
int &sock = socket;
len=static_cast<quint32>(::recvmsg(sock, &msg, MSG_TRUNC));
#else
socklen_t fromlen = sizeof(from);
int &sock = socket;
len=static_cast<qint32>(::recvfrom(sock, encrypt, UDP_PACKET_SIZE, MSG_TRUNC, reinterpret_cast<struct sockaddr *>(&from), &fromlen));
#endif
#else
int fromlen = sizeof(from);
SOCKET sock = static_cast<SOCKET>(socket);
len=::recvfrom(sock, encrypt, UDP_PACKET_SIZE, 0, reinterpret_cast<struct sockaddr *>(&from), &fromlen);
#endif
// Cloned from ::run(), as it's the only UDP data we care about until the thread is started.
quint32 *ping = reinterpret_cast<quint32 *>(encrypt);
if ((len == 12) && (*ping == 0) && bAllowPing) {
ping[0] = uiVersionBlob;
ping[3] = qToBigEndian(static_cast<quint32>(qhUsers.count()));
ping[4] = qToBigEndian(static_cast<quint32>(iMaxUsers));
ping[5] = qToBigEndian(static_cast<quint32>(iMaxBandwidth));
#ifdef Q_OS_LINUX
// There will be space for only one header, and the only data we have asked for is the incoming
// address. So we can reuse most of the same msg and control data.
iov[0].iov_len = 6 * sizeof(quint32);
::sendmsg(sock, &msg, 0);
#else
::sendto(sock, encrypt, 6 * sizeof(quint32), 0, reinterpret_cast<struct sockaddr *>(&from), fromlen);
#endif
}
}
void Server::run() {
qint32 len;
#if defined(__LP64__)
char encbuff[UDP_PACKET_SIZE+8];
char *encrypt = encbuff + 4;
#else
char encrypt[UDP_PACKET_SIZE];
#endif
char buffer[UDP_PACKET_SIZE];
sockaddr_storage from;
int nfds = qlUdpSocket.count();
#ifdef Q_OS_UNIX
socklen_t fromlen;
STACKVAR(struct pollfd, fds, nfds+1);
for (int i=0;i<nfds;++i) {
fds[i].fd = qlUdpSocket.at(i);
fds[i].events = POLLIN;
fds[i].revents = 0;
}
fds[nfds].fd=aiNotify[0];
fds[nfds].events = POLLIN;
fds[nfds].revents = 0;
#else
int fromlen;
STACKVAR(SOCKET, fds, nfds);
STACKVAR(HANDLE, events, nfds+1);
for (int i=0;i<nfds;++i) {
fds[i] = qlUdpSocket.at(i);
events[i] = CreateEvent(nullptr, FALSE, FALSE, nullptr);
::WSAEventSelect(fds[i], events[i], FD_READ);
}
events[nfds] = hNotify;
#endif
++nfds;
while (bRunning) {
#ifdef Q_OS_UNIX
int pret = poll(fds, nfds, -1);
if (pret <= 0) {
if (errno == EINTR)
continue;
qCritical("poll failure");
bRunning = false;
break;
}
if (fds[nfds - 1].revents) {
// Drain pipe
unsigned char val;
while (::recv(aiNotify[0], &val, 1, MSG_DONTWAIT) == 1) {};
break;
}
for (int i=0;i<nfds-1;++i) {
if (fds[i].revents) {
if (fds[i].revents & (POLLHUP | POLLERR | POLLNVAL)) {
qCritical("poll event failure");
bRunning = false;
break;
}
int sock = fds[i].fd;
#else
for (int i=0;i<1;++i) {
{
DWORD ret = WaitForMultipleObjects(nfds, events, FALSE, INFINITE);
if (ret == (WAIT_OBJECT_0 + nfds - 1)) {
break;
}
if (ret == WAIT_FAILED) {
qCritical("UDP wait failed");
bRunning = false;
break;
}
SOCKET sock = fds[ret - WAIT_OBJECT_0];
#endif
fromlen = sizeof(from);
#ifdef Q_OS_WIN
len=::recvfrom(sock, encrypt, UDP_PACKET_SIZE, 0, reinterpret_cast<struct sockaddr *>(&from), &fromlen);
#else
#ifdef Q_OS_LINUX
struct msghdr msg;
struct iovec iov[1];
iov[0].iov_base = encrypt;
iov[0].iov_len = UDP_PACKET_SIZE;
u_char controldata[CMSG_SPACE(MAX(sizeof(struct in6_pktinfo),sizeof(struct in_pktinfo)))];
memset(&msg, 0, sizeof(msg));
msg.msg_name = reinterpret_cast<struct sockaddr *>(&from);
msg.msg_namelen = sizeof(from);
msg.msg_iov = iov;
msg.msg_iovlen = 1;
msg.msg_control = controldata;
msg.msg_controllen = sizeof(controldata);
len=static_cast<quint32>(::recvmsg(sock, &msg, MSG_TRUNC));
Q_UNUSED(fromlen);
#else
len=static_cast<qint32>(::recvfrom(sock, encrypt, UDP_PACKET_SIZE, MSG_TRUNC, reinterpret_cast<struct sockaddr *>(&from), &fromlen));
#endif
#endif
if (len == 0) {
break;
} else if (len == SOCKET_ERROR) {
break;
} else if (len < 5) {
// 4 bytes crypt header + type + session
continue;
} else if (len > UDP_PACKET_SIZE) {
continue;
}
QReadLocker rl(&qrwlVoiceThread);
quint32 *ping = reinterpret_cast<quint32 *>(encrypt);
if ((len == 12) && (*ping == 0) && bAllowPing) {
ping[0] = uiVersionBlob;
// 1 and 2 will be the timestamp, which we return unmodified.
ping[3] = qToBigEndian(static_cast<quint32>(qhUsers.count()));
ping[4] = qToBigEndian(static_cast<quint32>(iMaxUsers));
ping[5] = qToBigEndian(static_cast<quint32>(iMaxBandwidth));
#ifdef Q_OS_LINUX
iov[0].iov_len = 6 * sizeof(quint32);
::sendmsg(sock, &msg, 0);
#else
::sendto(sock, encrypt, 6 * sizeof(quint32), 0, reinterpret_cast<struct sockaddr *>(&from), fromlen);
#endif
continue;
}
quint16 port = (from.ss_family == AF_INET6) ? (reinterpret_cast<sockaddr_in6 *>(&from)->sin6_port) : (reinterpret_cast<sockaddr_in *>(&from)->sin_port);
const HostAddress &ha = HostAddress(from);
const QPair<HostAddress, quint16> &key = QPair<HostAddress, quint16>(ha, port);
ServerUser *u = qhPeerUsers.value(key);
if (u) {
if (! checkDecrypt(u, encrypt, buffer, len)) {
continue;
}
} else {
// Unknown peer
foreach(ServerUser *usr, qhHostUsers.value(ha)) {
if (checkDecrypt(usr, encrypt, buffer, len)) { // checkDecrypt takes the User's qrwlCrypt lock.
// Every time we relock, reverify users' existance.
// The main thread might delete the user while the lock isn't held.
unsigned int uiSession = usr->uiSession;
rl.unlock();
qrwlVoiceThread.lockForWrite();
if (qhUsers.contains(uiSession)) {
u = usr;
u->sUdpSocket = sock;
memcpy(& u->saiUdpAddress, &from, sizeof(from));
qhHostUsers[from].remove(u);
qhPeerUsers.insert(key, u);
}
qrwlVoiceThread.unlock();
rl.relock();
if (u && !qhUsers.contains(uiSession))
u = nullptr;
break;
}
}
if (! u) {
continue;
}
}
len -= 4;
MessageHandler::UDPMessageType msgType = static_cast<MessageHandler::UDPMessageType>((buffer[0] >> 5) & 0x7);
if (msgType == MessageHandler::UDPVoiceSpeex ||
msgType == MessageHandler::UDPVoiceCELTAlpha ||
msgType == MessageHandler::UDPVoiceCELTBeta ||
msgType == MessageHandler::UDPVoiceOpus) {
// Allow all voice packets through by default.
bool ok = true;
// ...Unless we're in Opus mode. In Opus mode, only Opus packets are allowed.
if (bOpus && msgType != MessageHandler::UDPVoiceOpus) {
ok = false;
}
if (ok) {
u->aiUdpFlag = 1;
processMsg(u, buffer, len);
}
} else if (msgType == MessageHandler::UDPPing) {
QByteArray qba;
sendMessage(u, buffer, len, qba, true);
}
#ifdef Q_OS_UNIX
fds[i].revents = 0;
#endif
}
}
}
#ifdef Q_OS_WIN
for (int i=0;i<nfds-1;++i) {
::WSAEventSelect(fds[i], nullptr, 0);
CloseHandle(events[i]);
}
#endif
}
bool Server::checkDecrypt(ServerUser *u, const char *encrypt, char *plain, unsigned int len) {
QMutexLocker l(&u->qmCrypt);
if (u->csCrypt->isValid() && u->csCrypt->decrypt(reinterpret_cast<const unsigned char *>(encrypt), reinterpret_cast<unsigned char *>(plain), len))
return true;
if (u->csCrypt->tLastGood.elapsed() > 5000000ULL) {
if (u->csCrypt->tLastRequest.elapsed() > 5000000ULL) {
u->csCrypt->tLastRequest.restart();
emit reqSync(u->uiSession);
}
}
return false;
}
void Server::sendMessage(ServerUser *u, const char *data, int len, QByteArray &cache, bool force) {
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
if ((u->aiUdpFlag.loadRelaxed() == 1 || force) && (u->sUdpSocket != INVALID_SOCKET)) {
#else
// Qt 5.14 introduced QAtomicInteger::loadRelaxed() which deprecates QAtomicInteger::load()
if ((u->aiUdpFlag.load() == 1 || force) && (u->sUdpSocket != INVALID_SOCKET)) {
#endif
#if defined(__LP64__)
STACKVAR(char, ebuffer, len+4+16);
char *buffer = reinterpret_cast<char *>(((reinterpret_cast<quint64>(ebuffer) + 8) & ~7) + 4);
#else
STACKVAR(char, buffer, len+4);
#endif
{
QMutexLocker wl(&u->qmCrypt);
if (!u->csCrypt->isValid()) {
return;
}
if (!u->csCrypt->encrypt(reinterpret_cast<const unsigned char *>(data), reinterpret_cast<unsigned char *>(buffer), len)) {
return;
}
}
#ifdef Q_OS_WIN
DWORD dwFlow = 0;
if (Meta::hQoS)
QOSAddSocketToFlow(Meta::hQoS, u->sUdpSocket, reinterpret_cast<struct sockaddr *>(& u->saiUdpAddress), QOSTrafficTypeVoice, QOS_NON_ADAPTIVE_FLOW, reinterpret_cast<PQOS_FLOWID>(&dwFlow));
#endif
#ifdef Q_OS_LINUX
struct msghdr msg;
struct iovec iov[1];
iov[0].iov_base = buffer;
iov[0].iov_len = len+4;
u_char controldata[CMSG_SPACE(MAX(sizeof(struct in6_pktinfo),sizeof(struct in_pktinfo)))];
memset(controldata, 0, sizeof(controldata));
memset(&msg, 0, sizeof(msg));
msg.msg_name = reinterpret_cast<struct sockaddr *>(& u->saiUdpAddress);
msg.msg_namelen = static_cast<socklen_t>((u->saiUdpAddress.ss_family == AF_INET6) ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in));
msg.msg_iov = iov;
msg.msg_iovlen = 1;
msg.msg_control = controldata;
msg.msg_controllen = CMSG_SPACE((u->saiUdpAddress.ss_family == AF_INET6) ? sizeof(struct in6_pktinfo) : sizeof(struct in_pktinfo));
struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
HostAddress tcpha(u->saiTcpLocalAddress);
if (u->saiUdpAddress.ss_family == AF_INET6) {
cmsg->cmsg_level = IPPROTO_IPV6;
cmsg->cmsg_type = IPV6_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
struct in6_pktinfo *pktinfo = reinterpret_cast<struct in6_pktinfo *>(CMSG_DATA(cmsg));
memset(pktinfo, 0, sizeof(*pktinfo));
memcpy(&pktinfo->ipi6_addr.s6_addr[0], &tcpha.qip6.c[0], sizeof(pktinfo->ipi6_addr.s6_addr));
} else {
cmsg->cmsg_level = IPPROTO_IP;
cmsg->cmsg_type = IP_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
struct in_pktinfo *pktinfo = reinterpret_cast<struct in_pktinfo *>(CMSG_DATA(cmsg));
memset(pktinfo, 0, sizeof(*pktinfo));
if (tcpha.isV6())
return;
pktinfo->ipi_spec_dst.s_addr = tcpha.hash[3];
}
::sendmsg(u->sUdpSocket, &msg, 0);
#else
::sendto(u->sUdpSocket, buffer, len+4, 0, reinterpret_cast<struct sockaddr *>(& u->saiUdpAddress), (u->saiUdpAddress.ss_family == AF_INET6) ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in));
#endif
#ifdef Q_OS_WIN
if (Meta::hQoS && dwFlow)
QOSRemoveSocketFromFlow(Meta::hQoS, 0, dwFlow, 0);
#else
#endif
} else {
if (cache.isEmpty())
cache = QByteArray(data, len);
emit tcpTransmit(cache,u->uiSession);
}
}
#define SENDTO \
if ((!pDst->bDeaf) && (!pDst->bSelfDeaf) && (pDst != u)) { \
if ((poslen > 0) && (pDst->ssContext == u->ssContext)) \
sendMessage(pDst, buffer, len, qba); \
else \
sendMessage(pDst, buffer, len - poslen, qba_npos); \
}
void Server::processMsg(ServerUser *u, const char *data, int len) {
// Note that in this function we never have to aquire a read-lock on qrwlVoiceThread
// as all places that call this function will hold that lock at the point of calling
// this function.
// This function is currently called from Server::msgUDPTunnel, Server::run and
// Server::message
if (u->sState != ServerUser::Authenticated || u->bMute || u->bSuppress || u->bSelfMute)
return;
QByteArray qba, qba_npos;
unsigned int counter;
char buffer[UDP_PACKET_SIZE];
PacketDataStream pdi(data + 1, len - 1);
PacketDataStream pds(buffer+1, UDP_PACKET_SIZE-1);
unsigned int type = data[0] & 0xe0;
unsigned int target = data[0] & 0x1f;
unsigned int poslen;
// Check the voice data rate limit.
{
BandwidthRecord *bw = &u->bwr;
// IP + UDP + Crypt + Data
const int packetsize = 20 + 8 + 4 + len;
if (! bw->addFrame(packetsize, iMaxBandwidth / 8)) {
// Suppress packet.
return;
}
}
// Read the sequence number.
pdi >> counter;
// Skip to the end of the voice data.
if ((type >> 5) != MessageHandler::UDPVoiceOpus) {
do {
counter = pdi.next8();
pdi.skip(counter & 0x7f);
} while ((counter & 0x80) && pdi.isValid());
} else {
int size;
pdi >> size;
pdi.skip(size & 0x1fff);
}
// Save location of the positional audio data.
poslen = pdi.left();
// Append session id to the new output stream.
pds << u->uiSession;
// Copy all voice and positional audio data to the output stream.
pds.append(data + 1, len - 1);
len = pds.size() + 1;
if (poslen > static_cast<unsigned int>(len)) {
// poslen must never ever be bigger than len as this could lead to negative buffer sizes (len - poslen) being
// used when further processing the packet.
// Usually this shouldn't happen in the first place but can happen with malformed/malicious packets in certain
// cases.
poslen = 0;
}
/// A set of users that'll receive the audio buffer because they are listening
/// to a channel that received that audio.
QSet<ServerUser *> listeningUsers;
if (target == 0x1f) { // Server loopback
buffer[0] = static_cast<char>(type | SpeechFlags::Normal);
sendMessage(u, buffer, len, qba);
return;
} else if (target == 0) { // Normal speech
Channel *c = u->cChannel;
buffer[0] = static_cast<char>(type | SpeechFlags::Normal);
// Send audio to all users that are listening to the channel
foreach(unsigned int currentSession, ChannelListener::getListenersForChannel(c)) {
ServerUser *pDst = static_cast<ServerUser *>(qhUsers.value(currentSession));
if (pDst) {
listeningUsers << pDst;
}
}
// Send audio to all users in the same channel
foreach(User *p, c->qlUsers) {
ServerUser *pDst = static_cast<ServerUser *>(p);
// As we send the audio to this particular user here, we want to make sure to not send it again due to a listener proxy
listeningUsers -= pDst;
SENDTO;
}
// Send audio to all linked channels the user has speak-permission
if (! c->qhLinks.isEmpty()) {
QSet<Channel *> chans = c->allLinks();
chans.remove(c);
QMutexLocker qml(&qmCache);
foreach(Channel *l, chans) {
if (ChanACL::hasPermission(u, l, ChanACL::Speak, &acCache)) {
// Send the audio stream to all users that are listening to the linked channel but are not
// in the original channel the audio is coming from nor are they listening to the orignal
// channel (in these cases they have received the audio already).
foreach(unsigned int currentSession, ChannelListener::getListenersForChannel(l)) {
ServerUser *pDst = static_cast<ServerUser *>(qhUsers.value(currentSession));
if (pDst && pDst->cChannel != c && !ChannelListener::isListening(pDst, c)) {
listeningUsers << pDst;
}
}
// Send audio to users in the linked channel but only if they
// haven't received the audio already (because they are listening
// to the original channel).
foreach(User *p, l->qlUsers) {
if (!ChannelListener::isListening(p->uiSession, c->iId)) {
ServerUser *pDst = static_cast<ServerUser *>(p);
// As we send the audio to this particular user here, we want to make sure to not send it again due to a listener proxy
listeningUsers -= pDst;
SENDTO;
}
}
}
}
}
} else if (u->qmTargets.contains(target)) { // Whisper/Shout
QSet<ServerUser *> channel;
QSet<ServerUser *> direct;
QSet<ServerUser *> listener;
if (u->qmTargetCache.contains(target)) {
const WhisperTargetCache &cache = u->qmTargetCache.value(target);
channel = cache.channelTargets;
direct = cache.directTargets;
listener = cache.listeningTargets;
} else {
const WhisperTarget &wt = u->qmTargets.value(target);
if (! wt.qlChannels.isEmpty()) {
QMutexLocker qml(&qmCache);
foreach(const WhisperTarget::Channel &wtc, wt.qlChannels) {
Channel *wc = qhChannels.value(wtc.iId);
if (wc) {
bool link = wtc.bLinks && ! wc->qhLinks.isEmpty();
bool dochildren = wtc.bChildren && ! wc->qlChannels.isEmpty();
bool group = ! wtc.qsGroup.isEmpty();
if (!link && !dochildren && ! group) {
// Common case
if (ChanACL::hasPermission(u, wc, ChanACL::Whisper, &acCache)) {
foreach(User *p, wc->qlUsers) {
channel.insert(static_cast<ServerUser *>(p));
}
foreach(unsigned int currentSession, ChannelListener::getListenersForChannel(wc)) {
ServerUser *pDst = static_cast<ServerUser *>(qhUsers.value(currentSession));
if (pDst) {
listener << pDst;
}
}
}
} else {
QSet<Channel *> channels;
if (link)
channels = wc->allLinks();
else
channels.insert(wc);
if (dochildren)
channels.unite(wc->allChildren());
const QString &redirect = u->qmWhisperRedirect.value(wtc.qsGroup);
const QString &qsg = redirect.isEmpty() ? wtc.qsGroup : redirect;
foreach(Channel *tc, channels) {
if (ChanACL::hasPermission(u, tc, ChanACL::Whisper, &acCache)) {
foreach(User *p, tc->qlUsers) {
ServerUser *su = static_cast<ServerUser *>(p);
if (! group || Group::isMember(tc, tc, qsg, su)) {
channel.insert(su);
}
}
foreach(unsigned int currentSession, ChannelListener::getListenersForChannel(tc)) {
ServerUser *pDst = static_cast<ServerUser *>(qhUsers.value(currentSession));
if (pDst) {
listener << pDst;
}
}
}
}
}
}
}
// If a user receives the audio through this shout anyways, we won't send it through the
// listening channel again (and thus sending the audio twice)
listener -= channel;
}
{
QMutexLocker qml(&qmCache);
foreach(unsigned int id, wt.qlSessions) {
ServerUser *pDst = qhUsers.value(id);
if (pDst && ChanACL::hasPermission(u, pDst->cChannel, ChanACL::Whisper, &acCache) && !channel.contains(pDst))
direct.insert(pDst);
}
}
int uiSession = u->uiSession;
qrwlVoiceThread.unlock();
qrwlVoiceThread.lockForWrite();
if (qhUsers.contains(uiSession))
u->qmTargetCache.insert(target, { channel, direct, listener });
qrwlVoiceThread.unlock();
qrwlVoiceThread.lockForRead();
if (! qhUsers.contains(uiSession))
return;
}
if (! channel.isEmpty()) {
// These users receive the audio because someone is shouting to their channel
buffer[0] = static_cast<char>(type | SpeechFlags::Shout);
foreach(ServerUser *pDst, channel) {
SENDTO;
}
if (! direct.isEmpty()) {
qba.clear();
qba_npos.clear();
}
}
if (! direct.isEmpty()) {
buffer[0] = static_cast<char>(type | SpeechFlags::Whisper);
foreach(ServerUser *pDst, direct) {
SENDTO;
}
}
// Add the listening users to the set of current listeners
listeningUsers += listener;
}
// Send the audio to all listening users
buffer[0] = static_cast<char>(type | SpeechFlags::Listen);
foreach(ServerUser *pDst, listeningUsers) {
SENDTO;
}
}
void Server::log(ServerUser *u, const QString &str) const {
QString msg = QString("<%1:%2(%3)> %4").arg(QString::number(u->uiSession),
u->qsName,
QString::number(u->iId),
str);
log(msg);
}
void Server::log(const QString &msg) const {
dblog(msg);
qWarning("%d => %s", iServerNum, msg.toUtf8().constData());
}
void Server::newClient() {
SslServer *ss = qobject_cast<SslServer *>(sender());
if (! ss)
return;
forever {
QSslSocket *sock = ss->nextPendingSSLConnection();
if (! sock)
return;
QHostAddress adr = sock->peerAddress();
if (meta->banCheck(adr)) {
log(QString("Ignoring connection: %1 (Global ban)").arg(addressToString(sock->peerAddress(), sock->peerPort())));
sock->disconnectFromHost();
sock->deleteLater();
return;
}
HostAddress ha(adr);
QList<Ban> tmpBans = qlBans;
foreach(const Ban &ban, qlBans) {
if (ban.isExpired())
tmpBans.removeOne(ban);
}
if (qlBans.count() != tmpBans.count()) {
qlBans = tmpBans;
saveBans();
}
foreach(const Ban &ban, qlBans) {
if (ban.haAddress.match(ha, ban.iMask)) {
log(QString("Ignoring connection: %1, Reason: %2, Username: %3, Hash: %4 (Server ban)").arg(addressToString(sock->peerAddress(), sock->peerPort()), ban.qsReason, ban.qsUsername, ban.qsHash));
sock->disconnectFromHost();
sock->deleteLater();
return;
}
}
#ifdef Q_OS_MAC
// One unexpected behavior of Qt's SSL backend is: it will add the key pair
// it uses in a connection into the default keychain, and when access the private
// key afterwards, a pop up will show up asking for user's permission.
// In some case (OS X 10.15.5), this pop up will be suppressed somehow and no private
// key is returned.
// This env variable will avoid Qt directly adding the key pair into the default keychain,
// using a temporary keychain instead.
// See #4298 and https://codereview.qt-project.org/c/qt/qtbase/+/184243
EnvUtils::setenv("QT_SSL_USE_TEMPORARY_KEYCHAIN", "1");
#endif
sock->setPrivateKey(qskKey);
sock->setLocalCertificate(qscCert);
QSslConfiguration config;
#if QT_VERSION >= QT_VERSION_CHECK(5,15,0)
config = sock->sslConfiguration();
// Qt 5.15 introduced QSslConfiguration::addCaCertificate(s) that should be preferred over the functions in QSslSocket
// Treat the leaf certificate as a root.
// This shouldn't strictly be necessary,
// and is a left-over from early on.
// Perhaps it is necessary for self-signed
// certs?
config.addCaCertificate(qscCert);
// Add CA certificates specified via
// murmur.ini's sslCA option.
config.addCaCertificates(Meta::mp.qlCA);
// Add intermediate CAs found in the PEM
// bundle used for this server's certificate.
config.addCaCertificates(qlIntermediates);
#else
// Treat the leaf certificate as a root.
// This shouldn't strictly be necessary,
// and is a left-over from early on.
// Perhaps it is necessary for self-signed
// certs?
sock->addCaCertificate(qscCert);
// Add CA certificates specified via
// murmur.ini's sslCA option.
sock->addCaCertificates(Meta::mp.qlCA);
// Add intermediate CAs found in the PEM
// bundle used for this server's certificate.
sock->addCaCertificates(qlIntermediates);
// Must not get config from socket before setting CA certificates
config = sock->sslConfiguration();
#endif
config.setCiphers(Meta::mp.qlCiphers);
#if defined(USE_QSSLDIFFIEHELLMANPARAMETERS)
config.setDiffieHellmanParameters(qsdhpDHParams);
#endif
sock->setSslConfiguration(config);
if (qqIds.isEmpty()) {
log(QString("Session ID pool (%1) empty, rejecting connection").arg(iMaxUsers));
sock->disconnectFromHost();
sock->deleteLater();
return;
}
ServerUser *u = new ServerUser(this, sock);
u->uiSession = qqIds.dequeue();
u->haAddress = ha;
HostAddress(sock->localAddress()).toSockaddr(& u->saiTcpLocalAddress);
{
QWriteLocker wl(&qrwlVoiceThread);
qhUsers.insert(u->uiSession, u);
qhHostUsers[ha].insert(u);
}
connect(u, SIGNAL(connectionClosed(QAbstractSocket::SocketError, const QString &)), this, SLOT(connectionClosed(QAbstractSocket::SocketError, const QString &)));
connect(u, SIGNAL(message(unsigned int, const QByteArray &)), this, SLOT(message(unsigned int, const QByteArray &)));
connect(u, SIGNAL(handleSslErrors(const QList<QSslError> &)), this, SLOT(sslError(const QList<QSslError> &)));
connect(u, SIGNAL(encrypted()), this, SLOT(encrypted()));
log(u, QString("New connection: %1").arg(addressToString(sock->peerAddress(), sock->peerPort())));
u->setToS();
#if QT_VERSION >= 0x050500
sock->setProtocol(QSsl::TlsV1_0OrLater);
#elif QT_VERSION >= 0x050400
// In Qt 5.4, QSsl::SecureProtocols is equivalent
// to "TLSv1.0 or later", which we require.
sock->setProtocol(QSsl::SecureProtocols);
#else
sock->setProtocol(QSsl::TlsV1_0);
#endif
sock->startServerEncryption();
meta->successfulConnectionFrom(adr);
}
}
void Server::encrypted() {
ServerUser *uSource = qobject_cast<ServerUser *>(sender());
int major, minor, patch;
QString release;
Meta::getVersion(major, minor, patch, release);
MumbleProto::Version mpv;
mpv.set_version((major << 16) | (minor << 8) | patch);
if (Meta::mp.bSendVersion) {
mpv.set_release(u8(release));
mpv.set_os(u8(meta->qsOS));
mpv.set_os_version(u8(meta->qsOSVersion));
}
sendMessage(uSource, mpv);
QList<QSslCertificate> certs = uSource->peerCertificateChain();
if (!certs.isEmpty()) {
const QSslCertificate &cert = certs.last();
uSource->qslEmail = cert.subjectAlternativeNames().values(QSsl::EmailEntry);
uSource->qsHash = cert.digest(QCryptographicHash::Sha1).toHex();
if (! uSource->qslEmail.isEmpty() && uSource->bVerified) {
QString subject;
QString issuer;
QStringList subjectList = cert.subjectInfo(QSslCertificate::CommonName);
if (! subjectList.isEmpty()) {
subject = subjectList.first();
}
QStringList issuerList = certs.first().issuerInfo(QSslCertificate::CommonName);
if (! issuerList.isEmpty()) {
issuer = issuerList.first();
}
log(uSource, QString::fromUtf8("Strong certificate for %1 <%2> (signed by %3)").arg(subject).arg(uSource->qslEmail.join(", ")).arg(issuer));
}
foreach(const Ban &ban, qlBans) {
if (ban.qsHash == uSource->qsHash) {
log(uSource, QString("Certificate hash is banned: %1, Username: %2, Reason: %3.").arg(ban.qsHash, ban.qsUsername, ban.qsReason));
uSource->disconnectSocket();
}
}
}
}
void Server::sslError(const QList<QSslError> &errors) {
ServerUser *u = qobject_cast<ServerUser *>(sender());
if (!u)
return;
bool ok = true;
foreach(QSslError e, errors) {
switch (e.error()) {
case QSslError::InvalidPurpose:
// Allow email certificates.
break;
case QSslError::NoPeerCertificate:
case QSslError::SelfSignedCertificate:
case QSslError::SelfSignedCertificateInChain:
case QSslError::UnableToGetLocalIssuerCertificate:
case QSslError::UnableToVerifyFirstCertificate:
case QSslError::HostNameMismatch:
case QSslError::CertificateNotYetValid:
case QSslError::CertificateExpired:
u->bVerified = false;
break;
default:
log(u, QString("SSL Error: %1").arg(e.errorString()));
ok = false;
}
}
if (ok) {
u->proceedAnyway();
} else {
// Due to a regression in Qt 5 (QTBUG-53906),
// we can't 'force' disconnect (which calls
// QAbstractSocket->abort()) when built against Qt 5.
//
// The bug is that Qt doesn't update the
// QSslSocket's socket state when QSslSocket->abort()
// is called.
//
// Our call to abort() happens when QSslSocket is inside
// startHandshake(). That is, a handshake is in progress.
//
// After emitting the peerVerifyError/sslErrors signals,
// startHandshake() checks whether the connection is still
// in QAbstractSocket::ConectedState.
//
// Unfortunately, because abort() doesn't update the socket's
// state to signal that it is no longer connected, startHandshake()
// still thinks the socket is connected and will continue to
// attempt to finish the handshake.
//
// Because abort() tears down a lot of internal state
// of the QSslSocket, inlcuding the 'SSL *' object
// associated with the socket, this is fatal and leads
// to crashes, such as attempting to derefernce a nullptr
// 'SSL *' object.
//
// To avoid this, we use a non-forceful disconnect
// until this is fixed upstream.
//
// See
// https://bugreports.qt.io/browse/QTBUG-53906
// https://github.com/mumble-voip/mumble/issues/2334
u->disconnectSocket();
}
}
void Server::connectionClosed(QAbstractSocket::SocketError err, const QString &reason) {
if (reason.contains(QLatin1String("140E0197"))) {
// A severe bug was introduced in qt/qtbase@93a803a6de27d9eb57931c431b5f3d074914f693.
// q_SSL_shutdown() causes Qt to emit "error()" from unrelated QSslSocket(s), in addition to the correct one.
// The issue causes this function to disconnect random authenticated clients.
//
// The workaround consists in ignoring a specific OpenSSL error:
// "Error while reading: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init [20]"
//
// Definitely not ideal, but it fixes a critical vulnerability.
qWarning("Ignored OpenSSL error 140E0197 for %p", sender());
return;
}
Connection *c = qobject_cast<Connection *>(sender());
if (! c)
return;
if (c->bDisconnectedEmitted)
return;
c->bDisconnectedEmitted = true;
ServerUser *u = static_cast<ServerUser *>(c);
log(u, QString("Connection closed: %1 [%2]").arg(reason).arg(err));
setLastDisconnect(u);
if (u->sState == ServerUser::Authenticated) {
if (ChannelListener::isListeningToAny(u)) {
// Send nessage to all other clients that this particular user won't be listening
// to any channel anymore
MumbleProto::UserState mpus;
mpus.set_session(u->uiSession);
foreach(int channelID, ChannelListener::getListenedChannelsForUser(u)) {
mpus.add_listening_channel_remove(channelID);
// Also remove the client from the list on the server
ChannelListener::removeListener(u->uiSession, channelID);
}
sendExcept(u, mpus);
}
MumbleProto::UserRemove mpur;
mpur.set_session(u->uiSession);
sendExcept(u, mpur);
emit userDisconnected(u);
}
Channel *old = u->cChannel;
{
QWriteLocker wl(&qrwlVoiceThread);
qhUsers.remove(u->uiSession);
qhHostUsers[u->haAddress].remove(u);
quint16 port = (u->saiUdpAddress.ss_family == AF_INET6) ? (reinterpret_cast<sockaddr_in6 *>(&u->saiUdpAddress)->sin6_port) : (reinterpret_cast<sockaddr_in *>(&u->saiUdpAddress)->sin_port);
const QPair<HostAddress, quint16> &key = QPair<HostAddress, quint16>(u->haAddress, port);
qhPeerUsers.remove(key);
if (old)
old->removeUser(u);
}
if (old && old->bTemporary && old->qlUsers.isEmpty())
QCoreApplication::instance()->postEvent(this, new ExecEvent(boost::bind(&Server::removeChannel, this, old->iId)));
if (static_cast<int>(u->uiSession) < iMaxUsers * 2)
qqIds.enqueue(u->uiSession); // Reinsert session id into pool
if (u->sState == ServerUser::Authenticated) {
clearTempGroups(u); // Also clears ACL cache
recheckCodecVersions(); // Maybe can choose a better codec now
}
u->deleteLater();
if (qhUsers.isEmpty())
stopThread();
}
void Server::message(unsigned int uiType, const QByteArray &qbaMsg, ServerUser *u) {
if (!u) {
u = static_cast<ServerUser *>(sender());
}
if (u->sState == ServerUser::Authenticated) {
u->resetActivityTime();
}
if (uiType == MessageHandler::UDPTunnel) {
int len = qbaMsg.size();
if (len < 2 || len > UDP_PACKET_SIZE) {
// Drop messages that are too small to be senseful or that are bigger than allowed
return;
}
QReadLocker rl(&qrwlVoiceThread);
u->aiUdpFlag = 0;
const char *buffer = qbaMsg.constData();
MessageHandler::UDPMessageType msgType = static_cast<MessageHandler::UDPMessageType>((buffer[0] >> 5) & 0x7);
if (msgType == MessageHandler::UDPVoiceSpeex ||
msgType == MessageHandler::UDPVoiceCELTAlpha ||
msgType == MessageHandler::UDPVoiceCELTBeta ||
msgType == MessageHandler::UDPVoiceOpus) {
// Allow all voice packets through by default.
bool ok = true;
// ...Unless we're in Opus mode. In Opus mode, only Opus packets are allowed.
if (bOpus && msgType != MessageHandler::UDPVoiceOpus) {
ok = false;
}
if (ok) {
processMsg(u, buffer, len);
}
}
return;
}
#ifdef QT_NO_DEBUG
#define MUMBLE_MH_MSG(x) case MessageHandler:: x : { \
MumbleProto:: x msg; \
if (msg.ParseFromArray(qbaMsg.constData(), qbaMsg.size())) { \
msg.DiscardUnknownFields(); \
msg##x(u, msg); \
} \
break; \
}
#else
#define MUMBLE_MH_MSG(x) case MessageHandler:: x : { \
MumbleProto:: x msg; \
if (msg.ParseFromArray(qbaMsg.constData(), qbaMsg.size())) { \
if (uiType != MessageHandler::Ping) { \
printf("== %s:\n", #x); \
msg.PrintDebugString(); \
} \
msg.DiscardUnknownFields(); \
msg##x(u, msg); \
} \
break; \
}
#endif
switch (uiType) {
MUMBLE_MH_ALL
}
}
void Server::checkTimeout() {
QList<ServerUser *> qlClose;
qrwlVoiceThread.lockForRead();
foreach(ServerUser *u, qhUsers) {
if (u->activityTime() > (iTimeout * 1000)) {
log(u, "Timeout");
qlClose.append(u);
}
}
qrwlVoiceThread.unlock();
foreach(ServerUser *u, qlClose)
u->disconnectSocket(true);
}
void Server::tcpTransmitData(QByteArray a, unsigned int id) {
Connection *c = qhUsers.value(id);
if (c) {
QByteArray qba;
int len = a.size();
qba.resize(len + 6);
unsigned char *uc = reinterpret_cast<unsigned char *>(qba.data());
* reinterpret_cast<quint16 *>(& uc[0]) = qToBigEndian(static_cast<quint16>(MessageHandler::UDPTunnel));
* reinterpret_cast<quint32 *>(& uc[2]) = qToBigEndian(static_cast<quint32>(len));
memcpy(uc + 6, a.constData(), len);
c->sendMessage(qba);
c->forceFlush();
}
}
void Server::doSync(unsigned int id) {
ServerUser *u = qhUsers.value(id);
if (u) {
log(u, "Requesting crypt-nonce resync");
MumbleProto::CryptSetup mpcs;
sendMessage(u, mpcs);
}
}
void Server::sendProtoMessage(ServerUser *u, const ::google::protobuf::Message &msg, unsigned int msgType) {
QByteArray cache;
u->sendMessage(msg, msgType, cache);
}
void Server::sendProtoAll(const ::google::protobuf::Message &msg, unsigned int msgType, unsigned int version) {
sendProtoExcept(nullptr, msg, msgType, version);
}
void Server::sendProtoExcept(ServerUser *u, const ::google::protobuf::Message &msg, unsigned int msgType, unsigned int version) {
QByteArray cache;
foreach(ServerUser *usr, qhUsers)
if ((usr != u) && (usr->sState == ServerUser::Authenticated))
if ((version == 0) || (usr->uiVersion >= version) || ((version & 0x80000000) && (usr->uiVersion < (~version))))
usr->sendMessage(msg, msgType, cache);
}
void Server::removeChannel(int id) {
Channel *c = qhChannels.value(id);
if (c)
removeChannel(c);
}
void Server::removeChannel(Channel *chan, Channel *dest) {
Channel *c;
User *p;
if (!dest)
dest = chan->cParent;
{
QWriteLocker wl(&qrwlVoiceThread);
chan->unlink(nullptr);
}
foreach(c, chan->qlChannels) {
removeChannel(c, dest);
}
foreach(p, chan->qlUsers) {
{
QWriteLocker wl(&qrwlVoiceThread);
chan->removeUser(p);
}
Channel *target = dest;
while (target->cParent && (! hasPermission(static_cast<ServerUser *>(p), target, ChanACL::Enter) || isChannelFull(target, static_cast<ServerUser *>(p))))
target = target->cParent;
MumbleProto::UserState mpus;
mpus.set_session(p->uiSession);
mpus.set_channel_id(target->iId);
userEnterChannel(p, target, mpus);
sendAll(mpus);
emit userStateChanged(p);
}
foreach(unsigned int userSession, ChannelListener::getListenersForChannel(chan)) {
ChannelListener::removeListener(userSession, chan->iId);
// Notify that all clients that have been listening to this channel, will do so no more
MumbleProto::UserState mpus;
mpus.set_session(userSession);
mpus.add_listening_channel_remove(chan->iId);
sendAll(mpus);
}
MumbleProto::ChannelRemove mpcr;
mpcr.set_channel_id(chan->iId);
sendAll(mpcr);
removeChannelDB(chan);
emit channelRemoved(chan);
if (chan->cParent) {
QWriteLocker wl(&qrwlVoiceThread);
chan->cParent->removeChannel(chan);
}
delete chan;
}
bool Server::unregisterUser(int id) {
if (! unregisterUserDB(id))
return false;
{
QMutexLocker lock(&qmCache);
foreach(Channel *c, qhChannels) {
bool write = false;
QList<ChanACL *> ql = c->qlACL;
foreach(ChanACL *acl, ql) {
if (acl->iUserId == id) {
c->qlACL.removeAll(acl);
write = true;
}
}
foreach(Group *g, c->qhGroups) {
bool addrem = g->qsAdd.remove(id);
bool remrem = g->qsRemove.remove(id);
write = write || addrem || remrem;
}
if (write)
updateChannel(c);
}
}
foreach(ServerUser *u, qhUsers) {
if (u->iId == id) {
clearACLCache(u);
MumbleProto::UserState mpus;
mpus.set_session(u->uiSession);
mpus.set_user_id(-1);
sendAll(mpus);
u->iId = -1;
break;
}
}
return true;
}
void Server::userEnterChannel(User *p, Channel *c, MumbleProto::UserState &mpus) {
if (p->cChannel == c)
return;
Channel *old = p->cChannel;
{
QWriteLocker wl(&qrwlVoiceThread);
c->addUser(p);
bool mayspeak = ChanACL::hasPermission(static_cast<ServerUser *>(p), c, ChanACL::Speak, nullptr);
bool sup = p->bSuppress;
if (mayspeak == sup) {
// Ok, he can speak and was suppressed, or vice versa
p->bSuppress = ! mayspeak;
mpus.set_suppress(p->bSuppress);
}
}
clearACLCache(p);
setLastChannel(p);
if (old && old->bTemporary && old->qlUsers.isEmpty()) {
QCoreApplication::instance()->postEvent(this, new ExecEvent(boost::bind(&Server::removeChannel, this, old->iId)));
}
sendClientPermission(static_cast<ServerUser *>(p), c);
if (c->cParent)
sendClientPermission(static_cast<ServerUser *>(p), c->cParent);
}
bool Server::hasPermission(ServerUser *p, Channel *c, QFlags<ChanACL::Perm> perm) {
QMutexLocker qml(&qmCache);
return ChanACL::hasPermission(p, c, perm, &acCache);
}
QFlags<ChanACL::Perm> Server::effectivePermissions(ServerUser *p, Channel *c) {
QMutexLocker qml(&qmCache);
return ChanACL::effectivePermissions(p, c, &acCache);
}
void Server::sendClientPermission(ServerUser *u, Channel *c, bool forceupdate) {
unsigned int perm;
if (u->iId == 0)
return;
{
QMutexLocker qml(&qmCache);
ChanACL::hasPermission(u, c, ChanACL::Enter, &acCache);
perm = acCache.value(u)->value(c);
}
if (forceupdate)
u->iLastPermissionCheck = c->iId;
if (u->qmPermissionSent.value(c->iId) != perm) {
u->qmPermissionSent.insert(c->iId, perm);
MumbleProto::PermissionQuery mppq;
mppq.set_channel_id(c->iId);
mppq.set_permissions(perm);
sendMessage(u, mppq);
}
}
/* This function is a helper for clearACLCache and assumes qmCache is held.
* First, check if anything actually changed, or if the list is getting awfully large,
* because this function is potentially quite expensive.
* If all the items are still valid; great. If they aren't, send off the last channel
* the client expliticly asked for -- this may not be what it wants, but it's our best
* guess.
*/
void Server::flushClientPermissionCache(ServerUser *u, MumbleProto::PermissionQuery &mppq) {
QMap<int, unsigned int>::const_iterator i;
bool match = (u->qmPermissionSent.count() < 20);
for (i = u->qmPermissionSent.constBegin(); (match && (i != u->qmPermissionSent.constEnd())); ++i) {
Channel *c = qhChannels.value(i.key());
if (! c) {
match = false;
} else {
ChanACL::hasPermission(u, c, ChanACL::Enter, &acCache);
unsigned int perm = acCache.value(u)->value(c);
if (perm != i.value())
match = false;
}
}
if (match)
return;
u->qmPermissionSent.clear();
Channel *c = qhChannels.value(u->iLastPermissionCheck);
if (! c) {
c = u->cChannel;
u->iLastPermissionCheck = c->iId;
}
ChanACL::hasPermission(u, c, ChanACL::Enter, &acCache);
unsigned int perm = acCache.value(u)->value(c);
u->qmPermissionSent.insert(c->iId, perm);
mppq.Clear();
mppq.set_channel_id(c->iId);
mppq.set_permissions(perm);
mppq.set_flush(true);
sendMessage(u, mppq);
}
void Server::clearACLCache(User *p) {
MumbleProto::PermissionQuery mppq;
{
QMutexLocker qml(&qmCache);
if (p) {
ChanACL::ChanCache *h = acCache.take(p);
delete h;
flushClientPermissionCache(static_cast<ServerUser *>(p), mppq);
} else {
foreach(ChanACL::ChanCache *h, acCache)
delete h;
acCache.clear();
foreach(ServerUser *u, qhUsers)
if (u->sState == ServerUser::Authenticated)
flushClientPermissionCache(u, mppq);
}
}
// A change in ACLs means that the user might be able to whisper
// to users it didn't have permission to do before (or vice versa)
clearWhisperTargetCache();
}
void Server::clearWhisperTargetCache() {
QWriteLocker lock(&qrwlVoiceThread);
foreach(ServerUser *u, qhUsers) {
u->qmTargetCache.clear();
}
}
QString Server::addressToString(const QHostAddress &adr, unsigned short port) {
HostAddress ha(adr);
if ((Meta::mp.iObfuscate != 0)) {
QCryptographicHash h(QCryptographicHash::Sha1);
h.addData(reinterpret_cast<const char *>(&Meta::mp.iObfuscate), sizeof(Meta::mp.iObfuscate));
if (adr.protocol() == QAbstractSocket::IPv4Protocol) {
quint32 num = adr.toIPv4Address();
h.addData(reinterpret_cast<const char *>(&num), sizeof(num));
} else if (adr.protocol() == QAbstractSocket::IPv6Protocol) {
Q_IPV6ADDR num = adr.toIPv6Address();
h.addData(reinterpret_cast<const char *>(num.c), sizeof(num.c));
}
return QString("<<%1:%2>>").arg(QString(h.result().toHex()), QString::number(port));
}
return QString("%1:%2").arg(ha.toString(), QString::number(port));
}
bool Server::validateUserName(const QString &name) {
return (qrUserName.exactMatch(name) && (name.length() <= 512));
}
bool Server::validateChannelName(const QString &name) {
return (qrChannelName.exactMatch(name) && (name.length() <= 512));
}
void Server::recheckCodecVersions(ServerUser *connectingUser) {
QMap<int, int> qmCodecUsercount;
QMap<int, int>::const_iterator i;
int users = 0;
int opus = 0;
// Count how many users use which codec
foreach(ServerUser *u, qhUsers) {
if (u->qlCodecs.isEmpty() && ! u->bOpus)
continue;
++users;
if (u->bOpus)
++opus;
foreach(int version, u->qlCodecs)
++qmCodecUsercount[version];
}
if (! users)
return;
// Enable Opus if the number of users with Opus is higher than the threshold
bool enableOpus = ((opus * 100 / users) >= iOpusThreshold);
// Find the best possible codec most users support
int version = 0;
int maximum_users = 0;
i = qmCodecUsercount.constEnd();
do {
--i;
if (i.value() > maximum_users) {
version = i.key();
maximum_users = i.value();
}
} while (i != qmCodecUsercount.constBegin());
int current_version = bPreferAlpha ? iCodecAlpha : iCodecBeta;
// If we don't already use the compat bitstream version set
// it as alpha and announce it. If another codec now got the
// majority set it as the opposite of the currently valid bPreferAlpha
// and announce it.
if (current_version != version) {
if (version == static_cast<qint32>(0x8000000b))
bPreferAlpha = true;
else
bPreferAlpha = ! bPreferAlpha;
if (bPreferAlpha)
iCodecAlpha = version;
else
iCodecBeta = version;
} else if (bOpus == enableOpus) {
if (bOpus && connectingUser && !connectingUser->bOpus) {
sendTextMessage(nullptr, connectingUser, false, QLatin1String("<strong>WARNING:</strong> Your client doesn't support the Opus codec the server is using, you won't be able to talk or hear anyone. Please upgrade to a client with Opus support."));
}
return;
}
bOpus = enableOpus;
MumbleProto::CodecVersion mpcv;
mpcv.set_alpha(iCodecAlpha);
mpcv.set_beta(iCodecBeta);
mpcv.set_prefer_alpha(bPreferAlpha);
mpcv.set_opus(bOpus);
sendAll(mpcv);
if (bOpus) {
foreach(ServerUser *u, qhUsers) {
// Prevent connected users that could not yet declare their opus capability during msgAuthenticate from being spammed.
// Only authenticated users and the currently connecting user (if recheck is called in that context) have a reliable u->bOpus.
if((u->sState == ServerUser::Authenticated || u == connectingUser)
&& !u->bOpus) {
sendTextMessage(nullptr, u, false, QLatin1String("<strong>WARNING:</strong> Your client doesn't support the Opus codec the server is switching to, you won't be able to talk or hear anyone. Please upgrade to a client with Opus support."));
}
}
}
log(QString::fromLatin1("CELT codec switch %1 %2 (prefer %3) (Opus %4)").arg(iCodecAlpha,0,16).arg(iCodecBeta,0,16).arg(bPreferAlpha ? iCodecAlpha : iCodecBeta,0,16).arg(bOpus));
}
void Server::hashAssign(QString &dest, QByteArray &hash, const QString &src) {
dest = src;
if (src.length() >= 128)
hash = sha1(src);
else
hash = QByteArray();
}
void Server::hashAssign(QByteArray &dest, QByteArray &hash, const QByteArray &src) {
dest = src;
if (src.length() >= 128)
hash = sha1(src);
else
hash = QByteArray();
}
bool Server::isTextAllowed(QString &text, bool &changed) {
changed = false;
if (! bAllowHTML) {
QString out;
if (HTMLFilter::filter(text, out)) {
changed = true;
text = out;
}
return ((iMaxTextMessageLength == 0) || (text.length() <= iMaxTextMessageLength));
} else {
int length = text.length();
// No limits
if ((iMaxTextMessageLength == 0) && (iMaxImageMessageLength == 0))
return true;
// Over Image limit? (If so, always fail)
if ((iMaxImageMessageLength != 0) && (length > iMaxImageMessageLength))
return false;
// Under textlength?
if ((iMaxTextMessageLength == 0) || (length <= iMaxTextMessageLength))
return true;
// Over textlength, under imagelength. If no XML, this is a fail.
if (! text.contains(QLatin1Char('<')))
return false;
// Strip value from <img>s src attributes to check text-length only -
// we already ensured the img-length requirement is met
QString qsOut;
QXmlStreamReader qxsr(QString::fromLatin1("<document>%1</document>").arg(text));
QXmlStreamWriter qxsw(&qsOut);
while (! qxsr.atEnd()) {
switch (qxsr.readNext()) {
case QXmlStreamReader::Invalid:
return false;
case QXmlStreamReader::StartElement: {
if (qxsr.name() == QLatin1String("img")) {
qxsw.writeStartElement(qxsr.namespaceUri().toString(), qxsr.name().toString());
foreach(const QXmlStreamAttribute &a, qxsr.attributes())
if (a.name() != QLatin1String("src"))
qxsw.writeAttribute(a);
} else {
qxsw.writeCurrentToken(qxsr);
}
}
break;
default:
qxsw.writeCurrentToken(qxsr);
break;
}
}
length = qsOut.length();
return (length <= iMaxTextMessageLength);
}
}
bool Server::isChannelFull(Channel *c, ServerUser *u) {
if (u && hasPermission(u, c, ChanACL::Write)) {
return false;
}
if (c->uiMaxUsers) {
return static_cast<unsigned int>(c->qlUsers.count()) >= c->uiMaxUsers;
}
if (iMaxUsersPerChannel) {
return c->qlUsers.count() >= iMaxUsersPerChannel;
}
return false;
}
bool Server::canNest(Channel *newParent, Channel *channel) const {
const int parentLevel = newParent ? static_cast<int>(newParent->getLevel()) : -1;
const int channelDepth = channel ? static_cast<int>(channel->getDepth()) : 0;
return (parentLevel + channelDepth) < iChannelNestingLimit;
}
Reference in New Issue View Git Blame Copy Permalink