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|
// 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 "Meta.h"
#include "Connection.h"
#include "Net.h"
#include "ServerDB.h"
#include "Server.h"
#include "OSInfo.h"
#include "Version.h"
#include "SSL.h"
#include "EnvUtils.h"
#include "FFDHE.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QSettings>
#ifdef Q_OS_WIN
# include <QtCore/QStandardPaths>
#endif
#include <QtNetwork/QHostInfo>
#include <QtNetwork/QNetworkInterface>
#if defined(USE_QSSLDIFFIEHELLMANPARAMETERS)
# include <QtNetwork/QSslDiffieHellmanParameters>
#endif
#ifdef Q_OS_WIN
# include <qos2.h>
#else
# include <pwd.h>
# include <sys/resource.h>
#endif
MetaParams Meta::mp;
#ifdef Q_OS_WIN
HANDLE Meta::hQoS = NULL;
#endif
MetaParams::MetaParams() {
qsPassword = QString();
usPort = DEFAULT_MUMBLE_PORT;
iTimeout = 30;
iMaxBandwidth = 72000;
iMaxUsers = 1000;
iMaxUsersPerChannel = 0;
iMaxListenersPerChannel = -1;
iMaxListenerProxiesPerUser = -1;
iMaxTextMessageLength = 5000;
iMaxImageMessageLength = 131072;
legacyPasswordHash = false;
kdfIterations = -1;
bAllowHTML = true;
iDefaultChan = 0;
bRememberChan = true;
qsWelcomeText = QString();
qsDatabase = QString();
iSQLiteWAL = 0;
iDBPort = 0;
qsDBusService = "net.sourceforge.mumble.murmur";
qsDBDriver = "QSQLITE";
qsLogfile = "murmur.log";
iLogDays = 31;
iObfuscate = 0;
bSendVersion = true;
bBonjour = true;
bAllowPing = true;
bCertRequired = false;
bForceExternalAuth = false;
iBanTries = 10;
iBanTimeframe = 120;
iBanTime = 300;
bBanSuccessful = true;
#ifdef Q_OS_UNIX
uiUid = uiGid = 0;
#endif
iOpusThreshold = 100;
iChannelNestingLimit = 10;
iChannelCountLimit = 1000;
qrUserName = QRegExp(QLatin1String("[-=\\w\\[\\]\\{\\}\\(\\)\\@\\|\\.]+"));
qrChannelName = QRegExp(QLatin1String("[ \\-=\\w\\#\\[\\]\\{\\}\\(\\)\\@\\|]+"));
iMessageLimit = 1;
iMessageBurst = 5;
qsCiphers = MumbleSSL::defaultOpenSSLCipherString();
bLogGroupChanges = false;
bLogACLChanges = false;
qsSettings = NULL;
}
MetaParams::~MetaParams() {
delete qsSettings;
}
/**
* Checks whether a qsSettings config variable named 'name' was set to a valid value for the type
* we want to convert it to. Otherwise a error message is logged and 'defaultValue' is returned.
*
* E.g. checkedFromSettings<QString>("blub", bla) would output an error message and leave bla unchanged
* if the user had set the ini parameter to "blub = has, commas, in, it" which QSettings will interpret
* not as a String but as a list of strings.
*
* @param T Conversion target type (type of 'defaultValue', auto inducable)
* @param name qsSettings variable name
* @param defaultValue Default value for 'name'
* @param settings The QSettings object to read from. If null, the Meta's qsSettings will be used.
* @return Setting if valid, default if not or setting not set.
*/
template <class T>
T MetaParams::typeCheckedFromSettings(const QString &name, const T &defaultValue, QSettings *settings) {
// Use qsSettings unless a specific QSettings instance
// is requested.
if (settings == NULL) {
settings = qsSettings;
}
QVariant cfgVariable = settings->value(name, defaultValue);
if (!cfgVariable.convert(QVariant(defaultValue).type())) { // Bit convoluted as canConvert<T>() only does a static check without considering whether say a string like "blub" is actually a valid double (which convert does).
qCritical() << "Configuration variable" << name << "is of invalid format. Set to default value of" << defaultValue << ".";
return defaultValue;
}
return cfgVariable.value<T>();
}
void MetaParams::read(QString fname) {
qmConfig.clear();
if (fname.isEmpty()) {
QStringList datapaths;
#if defined(Q_OS_WIN)
datapaths << QStandardPaths::writableLocation(QStandardPaths::DataLocation);
QDir appdir = QDir(QDir::fromNativeSeparators(EnvUtils::getenv(QLatin1String("APPDATA"))));
datapaths << appdir.absolutePath() + QLatin1String("/Mumble");
#else
datapaths << QDir::homePath() + QLatin1String("/.murmurd");
datapaths << QDir::homePath() + QLatin1String("/.config/Mumble");
#endif
#if defined(Q_OS_MAC)
/* Old Mac data path. */
datapaths << QDir::homePath() + QLatin1String("/Library/Preferences/Mumble/");
#endif
datapaths << QDir::homePath();
datapaths << QDir::currentPath();
datapaths << QCoreApplication::instance()->applicationDirPath();
foreach(const QString &p, datapaths) {
if (! p.isEmpty()) {
QFileInfo fi(p, "murmur.ini");
if (fi.exists() && fi.isReadable()) {
qdBasePath = QDir(p);
qsAbsSettingsFilePath = fi.absoluteFilePath();
break;
}
}
}
if (qsAbsSettingsFilePath.isEmpty()) {
QDir::root().mkpath(qdBasePath.absolutePath());
qdBasePath = QDir(datapaths.at(0));
qsAbsSettingsFilePath = qdBasePath.absolutePath() + QLatin1String("/murmur.ini");
}
} else {
QFile f(fname);
if (! f.open(QIODevice::ReadOnly)) {
qFatal("Specified ini file %s could not be opened", qPrintable(fname));
}
qdBasePath = QFileInfo(f).absoluteDir();
qsAbsSettingsFilePath = QFileInfo(f).absoluteFilePath();
f.close();
}
QDir::setCurrent(qdBasePath.absolutePath());
qsSettings = new QSettings(qsAbsSettingsFilePath, QSettings::IniFormat);
qsSettings->setIniCodec("UTF-8");
qWarning("Initializing settings from %s (basepath %s)", qPrintable(qsSettings->fileName()), qPrintable(qdBasePath.absolutePath()));
QString qsHost = qsSettings->value("host", QString()).toString();
if (! qsHost.isEmpty()) {
foreach(const QString &host, qsHost.split(QRegExp(QLatin1String("\\s+")), QString::SkipEmptyParts)) {
QHostAddress qhaddr;
if (qhaddr.setAddress(host)) {
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) {
qFatal("Lookup of bind hostname %s failed", qPrintable(host));
}
}
}
foreach(const QHostAddress &qha, qlBind)
qWarning("Binding to address %s", qPrintable(qha.toString()));
}
if (qlBind.isEmpty()) {
bool hasipv6 = false;
bool hasipv4 = false;
int nif = 0;
QList<QNetworkInterface> interfaces = QNetworkInterface::allInterfaces();
if (interfaces.isEmpty()) {
qWarning("Meta: Unable to acquire list of network interfaces.");
} else {
foreach(const QNetworkInterface &qni, interfaces) {
if (!(qni.flags() & QNetworkInterface::IsUp))
continue;
if (!(qni.flags() & QNetworkInterface::IsRunning))
continue;
if (qni.flags() & QNetworkInterface::IsLoopBack)
continue;
foreach(const QNetworkAddressEntry &qna, qni.addressEntries()) {
const QHostAddress &qha = qna.ip();
switch (qha.protocol()) {
case QAbstractSocket::IPv4Protocol:
hasipv4 = true;
break;
case QAbstractSocket::IPv6Protocol:
hasipv6 = true;
break;
default:
break;
}
}
++nif;
}
}
if (nif == 0) {
qWarning("Meta: Could not determine IPv4/IPv6 support via network interfaces, assuming support for both.");
hasipv6 = true;
hasipv4 = true;
}
if (hasipv6) {
if (SslServer::hasDualStackSupport() && hasipv4) {
qlBind << QHostAddress(QHostAddress::Any);
hasipv4 = false; // No need to add a separate ipv4 socket
} else {
qlBind << QHostAddress(QHostAddress::AnyIPv6);
}
}
if (hasipv4) {
qlBind << QHostAddress(QHostAddress::AnyIPv4);
}
}
qsPassword = typeCheckedFromSettings("serverpassword", qsPassword);
usPort = static_cast<unsigned short>(typeCheckedFromSettings("port", static_cast<uint>(usPort)));
iTimeout = typeCheckedFromSettings("timeout", iTimeout);
iMaxTextMessageLength = typeCheckedFromSettings("textmessagelength", iMaxTextMessageLength);
iMaxImageMessageLength = typeCheckedFromSettings("imagemessagelength", iMaxImageMessageLength);
legacyPasswordHash = typeCheckedFromSettings("legacypasswordhash", legacyPasswordHash);
kdfIterations = typeCheckedFromSettings("kdfiterations", -1);
bAllowHTML = typeCheckedFromSettings("allowhtml", bAllowHTML);
iMaxBandwidth = typeCheckedFromSettings("bandwidth", iMaxBandwidth);
iDefaultChan = typeCheckedFromSettings("defaultchannel", iDefaultChan);
bRememberChan = typeCheckedFromSettings("rememberchannel", bRememberChan);
iMaxUsers = typeCheckedFromSettings("users", iMaxUsers);
iMaxUsersPerChannel = typeCheckedFromSettings("usersperchannel", iMaxUsersPerChannel);
iMaxListenersPerChannel = typeCheckedFromSettings("listenersperchannel", iMaxListenersPerChannel);
iMaxListenerProxiesPerUser = typeCheckedFromSettings("listenersperuser", iMaxListenerProxiesPerUser);
qsWelcomeText = typeCheckedFromSettings("welcometext", qsWelcomeText);
bCertRequired = typeCheckedFromSettings("certrequired", bCertRequired);
bForceExternalAuth = typeCheckedFromSettings("forceExternalAuth", bForceExternalAuth);
qsDatabase = typeCheckedFromSettings("database", qsDatabase);
iSQLiteWAL = typeCheckedFromSettings("sqlite_wal", iSQLiteWAL);
qsDBDriver = typeCheckedFromSettings("dbDriver", qsDBDriver);
qsDBUserName = typeCheckedFromSettings("dbUsername", qsDBUserName);
qsDBPassword = typeCheckedFromSettings("dbPassword", qsDBPassword);
qsDBHostName = typeCheckedFromSettings("dbHost", qsDBHostName);
qsDBPrefix = typeCheckedFromSettings("dbPrefix", qsDBPrefix);
qsDBOpts = typeCheckedFromSettings("dbOpts", qsDBOpts);
iDBPort = typeCheckedFromSettings("dbPort", iDBPort);
qsIceEndpoint = typeCheckedFromSettings("ice", qsIceEndpoint);
qsIceSecretRead = typeCheckedFromSettings("icesecret", qsIceSecretRead);
qsIceSecretRead = typeCheckedFromSettings("icesecretread", qsIceSecretRead);
qsIceSecretWrite = typeCheckedFromSettings("icesecretwrite", qsIceSecretRead);
qsGRPCAddress = typeCheckedFromSettings("grpc", qsGRPCAddress);
qsGRPCCert = typeCheckedFromSettings("grpccert", qsGRPCCert);
qsGRPCKey = typeCheckedFromSettings("grpckey", qsGRPCKey);
qsGRPCAuthorized = typeCheckedFromSettings("grpcauthorized", qsGRPCAuthorized);
iLogDays = typeCheckedFromSettings("logdays", iLogDays);
qsDBus = typeCheckedFromSettings("dbus", qsDBus);
qsDBusService = typeCheckedFromSettings("dbusservice", qsDBusService);
qsLogfile = typeCheckedFromSettings("logfile", qsLogfile);
qsPid = typeCheckedFromSettings("pidfile", qsPid);
qsRegName = typeCheckedFromSettings("registerName", qsRegName);
qsRegPassword = typeCheckedFromSettings("registerPassword", qsRegPassword);
qsRegHost = typeCheckedFromSettings("registerHostname", qsRegHost);
qsRegLocation = typeCheckedFromSettings("registerLocation", qsRegLocation);
qurlRegWeb = QUrl(typeCheckedFromSettings("registerUrl", qurlRegWeb).toString());
bBonjour = typeCheckedFromSettings("bonjour", bBonjour);
iBanTries = typeCheckedFromSettings("autobanAttempts", iBanTries);
iBanTimeframe = typeCheckedFromSettings("autobanTimeframe", iBanTimeframe);
iBanTime = typeCheckedFromSettings("autobanTime", iBanTime);
bBanSuccessful = typeCheckedFromSettings("autobanSuccessfulConnections", bBanSuccessful);
qvSuggestVersion = MumbleVersion::getRaw(qsSettings->value("suggestVersion").toString());
if (qvSuggestVersion.toUInt() == 0)
qvSuggestVersion = QVariant();
qvSuggestPositional = qsSettings->value("suggestPositional");
if (qvSuggestPositional.toString().trimmed().isEmpty())
qvSuggestPositional = QVariant();
qvSuggestPushToTalk = qsSettings->value("suggestPushToTalk");
if (qvSuggestPushToTalk.toString().trimmed().isEmpty())
qvSuggestPushToTalk = QVariant();
bLogGroupChanges = typeCheckedFromSettings("loggroupchanges", bLogGroupChanges);
bLogACLChanges = typeCheckedFromSettings("logaclchanges", bLogACLChanges);
iOpusThreshold = typeCheckedFromSettings("opusthreshold", iOpusThreshold);
iChannelNestingLimit = typeCheckedFromSettings("channelnestinglimit", iChannelNestingLimit);
iChannelCountLimit = typeCheckedFromSettings("channelcountlimit", iChannelCountLimit);
#ifdef Q_OS_UNIX
qsName = qsSettings->value("uname").toString();
if (geteuid() == 0) {
// TODO: remove this silent fallback to enforce running as non-root
bool requested = true;
if (qsName.isEmpty()) {
// default server user name
qsName = "mumble-server";
requested = false;
}
struct passwd *pw = getpwnam(qPrintable(qsName));
if (pw) {
uiUid = pw->pw_uid;
uiGid = pw->pw_gid;
qsHome = pw->pw_dir;
} else if (requested) {
qFatal("Cannot find username %s", qPrintable(qsName));
}
endpwent();
}
#endif
qrUserName = QRegExp(typeCheckedFromSettings("username", qrUserName.pattern()));
qrChannelName = QRegExp(typeCheckedFromSettings("channelname", qrChannelName.pattern()));
iMessageLimit = typeCheckedFromSettings("messagelimit", 1);
iMessageBurst = typeCheckedFromSettings("messageburst", 5);
bool bObfuscate = typeCheckedFromSettings("obfuscate", false);
if (bObfuscate) {
qWarning("IP address obfuscation enabled.");
iObfuscate = qrand();
}
bSendVersion = typeCheckedFromSettings("sendversion", bSendVersion);
bAllowPing = typeCheckedFromSettings("allowping", bAllowPing);
if (!loadSSLSettings()) {
qFatal("MetaParams: Failed to load SSL settings. See previous errors.");
}
QStringList hosts;
foreach(const QHostAddress &qha, qlBind) {
hosts << qha.toString();
}
qmConfig.insert(QLatin1String("host"),hosts.join(" "));
qmConfig.insert(QLatin1String("password"),qsPassword);
qmConfig.insert(QLatin1String("port"),QString::number(usPort));
qmConfig.insert(QLatin1String("timeout"),QString::number(iTimeout));
qmConfig.insert(QLatin1String("textmessagelength"), QString::number(iMaxTextMessageLength));
qmConfig.insert(QLatin1String("legacypasswordhash"), legacyPasswordHash ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("kdfiterations"), QString::number(kdfIterations));
qmConfig.insert(QLatin1String("allowhtml"), bAllowHTML ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("bandwidth"),QString::number(iMaxBandwidth));
qmConfig.insert(QLatin1String("users"),QString::number(iMaxUsers));
qmConfig.insert(QLatin1String("defaultchannel"),QString::number(iDefaultChan));
qmConfig.insert(QLatin1String("rememberchannel"),bRememberChan ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("welcometext"),qsWelcomeText);
qmConfig.insert(QLatin1String("registername"),qsRegName);
qmConfig.insert(QLatin1String("registerpassword"),qsRegPassword);
qmConfig.insert(QLatin1String("registerhostname"),qsRegHost);
qmConfig.insert(QLatin1String("registerlocation"), qsRegLocation);
qmConfig.insert(QLatin1String("registerurl"),qurlRegWeb.toString());
qmConfig.insert(QLatin1String("bonjour"), bBonjour ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("certificate"),qscCert.toPem());
qmConfig.insert(QLatin1String("key"),qskKey.toPem());
qmConfig.insert(QLatin1String("obfuscate"),bObfuscate ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("username"),qrUserName.pattern());
qmConfig.insert(QLatin1String("channelname"),qrChannelName.pattern());
qmConfig.insert(QLatin1String("certrequired"), bCertRequired ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("forceExternalAuth"), bForceExternalAuth ? QLatin1String("true") : QLatin1String("false"));
qmConfig.insert(QLatin1String("suggestversion"), qvSuggestVersion.isNull() ? QString() : qvSuggestVersion.toString());
qmConfig.insert(QLatin1String("suggestpositional"), qvSuggestPositional.isNull() ? QString() : qvSuggestPositional.toString());
qmConfig.insert(QLatin1String("suggestpushtotalk"), qvSuggestPushToTalk.isNull() ? QString() : qvSuggestPushToTalk.toString());
qmConfig.insert(QLatin1String("opusthreshold"), QString::number(iOpusThreshold));
qmConfig.insert(QLatin1String("channelnestinglimit"), QString::number(iChannelNestingLimit));
qmConfig.insert(QLatin1String("channelcountlimit"), QString::number(iChannelCountLimit));
qmConfig.insert(QLatin1String("sslCiphers"), qsCiphers);
qmConfig.insert(QLatin1String("sslDHParams"), QString::fromLatin1(qbaDHParams.constData()));
}
bool MetaParams::loadSSLSettings() {
QSettings updatedSettings(qsAbsSettingsFilePath, QSettings::IniFormat);
updatedSettings.setIniCodec("UTF-8");
QString tmpCiphersStr = typeCheckedFromSettings("sslCiphers", qsCiphers);
QString qsSSLCert = qsSettings->value("sslCert").toString();
QString qsSSLKey = qsSettings->value("sslKey").toString();
QString qsSSLCA = qsSettings->value("sslCA").toString();
QString qsSSLDHParams = typeCheckedFromSettings(QLatin1String("sslDHParams"), QString(QLatin1String("@ffdhe2048")));
qbaPassPhrase = qsSettings->value("sslPassPhrase").toByteArray();
QSslCertificate tmpCert;
QList<QSslCertificate> tmpCA;
QList<QSslCertificate> tmpIntermediates;
QSslKey tmpKey;
QByteArray tmpDHParams;
QList<QSslCipher> tmpCiphers;
if (! qsSSLCA.isEmpty()) {
QFile pem(qsSSLCA);
if (pem.open(QIODevice::ReadOnly)) {
QByteArray qba = pem.readAll();
pem.close();
QList<QSslCertificate> ql = QSslCertificate::fromData(qba);
if (ql.isEmpty()) {
qCritical("MetaParams: Failed to parse any CA certificates from %s", qPrintable(qsSSLCA));
return false;
} else {
tmpCA = ql;
}
} else {
qCritical("MetaParams: Failed to read %s", qPrintable(qsSSLCA));
return false;
}
}
QByteArray crt, key;
if (! qsSSLCert.isEmpty()) {
QFile pem(qsSSLCert);
if (pem.open(QIODevice::ReadOnly)) {
crt = pem.readAll();
pem.close();
} else {
qCritical("MetaParams: Failed to read %s", qPrintable(qsSSLCert));
return false;
}
}
if (! qsSSLKey.isEmpty()) {
QFile pem(qsSSLKey);
if (pem.open(QIODevice::ReadOnly)) {
key = pem.readAll();
pem.close();
} else {
qCritical("MetaParams: Failed to read %s", qPrintable(qsSSLKey));
return false;
}
}
if (! key.isEmpty() || ! crt.isEmpty()) {
if (! key.isEmpty()) {
tmpKey = Server::privateKeyFromPEM(key, qbaPassPhrase);
}
if (tmpKey.isNull() && ! crt.isEmpty()) {
tmpKey = Server::privateKeyFromPEM(crt, qbaPassPhrase);
if (! tmpKey.isNull())
qCritical("MetaParams: Using private key found in certificate file.");
}
if (tmpKey.isNull()) {
qCritical("MetaParams: No private key found in certificate or key file.");
return false;
}
QList<QSslCertificate> ql = QSslCertificate::fromData(crt);
ql << QSslCertificate::fromData(key);
for (int i=0;i<ql.size(); ++i) {
const QSslCertificate &c = ql.at(i);
if (Server::isKeyForCert(tmpKey, c)) {
tmpCert = c;
ql.removeAt(i);
break;
}
}
if (tmpCert.isNull()) {
qCritical("MetaParams: Failed to find certificate matching private key.");
return false;
}
if (ql.size() > 0) {
tmpIntermediates = ql;
qCritical("MetaParams: Adding %d intermediate certificates from certificate file.", ql.size());
}
}
QByteArray dhparams;
#if defined(USE_QSSLDIFFIEHELLMANPARAMETERS)
if (! qsSSLDHParams.isEmpty()) {
if (qsSSLDHParams.startsWith(QLatin1String("@"))) {
QString group = qsSSLDHParams.mid(1).trimmed();
QByteArray pem = FFDHE::PEMForNamedGroup(group);
if (pem.isEmpty()) {
QStringList names = FFDHE::NamedGroups();
QStringList atNames;
foreach (QString name, names) {
atNames << QLatin1String("@") + name;
}
QString supported = atNames.join(QLatin1String(", "));
qFatal("MetaParms: Diffie-Hellman parameters with name '%s' is not available. (Supported: %s)", qPrintable(qsSSLDHParams), qPrintable(supported));
}
dhparams = pem;
} else {
QFile pem(qsSSLDHParams);
if (pem.open(QIODevice::ReadOnly)) {
dhparams = pem.readAll();
pem.close();
} else {
qFatal("MetaParams: Failed to read %s", qPrintable(qsSSLDHParams));
}
}
}
if (! dhparams.isEmpty()) {
QSslDiffieHellmanParameters qdhp = QSslDiffieHellmanParameters::fromEncoded(dhparams);
if (qdhp.isValid()) {
tmpDHParams = dhparams;
} else {
qFatal("MetaParams: Unable to use specified Diffie-Hellman parameters: %s", qPrintable(qdhp.errorString()));
return false;
}
}
#else
QString qsSSLDHParamsIniValue = qsSettings->value(QLatin1String("sslDHParams")).toString();
if (! qsSSLDHParamsIniValue.isEmpty()) {
qFatal("MetaParams: This version of Murmur does not support Diffie-Hellman parameters (sslDHParams). Murmur will not start unless you remove the option from your murmur.ini file.");
return false;
}
#endif
{
QList<QSslCipher> ciphers = MumbleSSL::ciphersFromOpenSSLCipherString(tmpCiphersStr);
if (ciphers.isEmpty()) {
qCritical("MetaParams: Invalid sslCiphers option. Either the cipher string is invalid or none of the ciphers are available: \"%s\"", qPrintable(qsCiphers));
return false;
}
#if !defined(USE_QSSLDIFFIEHELLMANPARAMETERS)
// If the version of Qt we're building against doesn't support
// QSslDiffieHellmanParameters, then we must filter out Diffie-
// Hellman cipher suites in order to guarantee that we do not
// use Qt's default Diffie-Hellman parameters.
{
QList<QSslCipher> filtered;
foreach (QSslCipher c, ciphers) {
if (c.keyExchangeMethod() == QLatin1String("DH")) {
continue;
}
filtered << c;
}
if (ciphers.size() != filtered.size()) {
qWarning("MetaParams: Warning: all cipher suites in sslCiphers using Diffie-Hellman key exchange "
"have been removed. Qt %s does not support custom Diffie-Hellman parameters.",
qVersion());
}
tmpCiphers = filtered;
}
#else
tmpCiphers = ciphers;
#endif
QStringList pref;
foreach (QSslCipher c, tmpCiphers) {
pref << c.name();
}
qWarning("MetaParams: TLS cipher preference is \"%s\"", qPrintable(pref.join(QLatin1String(":"))));
}
qscCert = tmpCert;
qlCA = tmpCA;
qlIntermediates = tmpIntermediates;
qskKey = tmpKey;
qbaDHParams = tmpDHParams;
qsCiphers = tmpCiphersStr;
qlCiphers = tmpCiphers;
qmConfig.insert(QLatin1String("certificate"), qscCert.toPem());
qmConfig.insert(QLatin1String("key"), qskKey.toPem());
qmConfig.insert(QLatin1String("sslCiphers"), qsCiphers);
qmConfig.insert(QLatin1String("sslDHParams"), QString::fromLatin1(qbaDHParams.constData()));
return true;
}
Meta::Meta() {
#ifdef Q_OS_WIN
QOS_VERSION qvVer;
qvVer.MajorVersion = 1;
qvVer.MinorVersion = 0;
hQoS = NULL;
HMODULE hLib = LoadLibrary(L"qWave.dll");
if (hLib == NULL) {
qWarning("Meta: Failed to load qWave.dll, no QoS available");
} else {
FreeLibrary(hLib);
if (! QOSCreateHandle(&qvVer, &hQoS))
qWarning("Meta: Failed to create QOS2 handle");
else
Connection::setQoS(hQoS);
}
#endif
}
Meta::~Meta() {
#ifdef Q_OS_WIN
if (hQoS) {
QOSCloseHandle(hQoS);
Connection::setQoS(NULL);
}
#endif
}
bool Meta::reloadSSLSettings() {
// Reload SSL settings.
if (!Meta::mp.loadSSLSettings()) {
return false;
}
// Re-initialize certificates for all
// virtual servers using the Meta server's
// certificate and private key.
foreach (Server *s, qhServers) {
if (s->bUsingMetaCert) {
s->log("Reloading certificates...");
s->initializeCert();
} else {
s->log("Not reloading certificates; server does not use Meta certificate");
}
}
return true;
}
void Meta::getOSInfo() {
qsOS = OSInfo::getOS();
qsOSVersion = OSInfo::getOSDisplayableVersion();
}
void Meta::bootAll() {
QList<int> ql = ServerDB::getBootServers();
foreach(int snum, ql)
boot(snum);
}
bool Meta::boot(int srvnum) {
if (qhServers.contains(srvnum))
return false;
if (! ServerDB::serverExists(srvnum))
return false;
Server *s = new Server(srvnum, this);
if (! s->bValid) {
delete s;
return false;
}
qhServers.insert(srvnum, s);
emit started(s);
#ifdef Q_OS_UNIX
unsigned int sockets = 19; // Base
foreach(s, qhServers) {
sockets += 11; // Listen sockets, signal pipes etc.
sockets += s->iMaxUsers; // One per user
}
struct rlimit r;
if (getrlimit(RLIMIT_NOFILE, &r) == 0) {
if (r.rlim_cur < sockets) {
r.rlim_cur = sockets;
if (r.rlim_max < sockets)
r.rlim_max = sockets;
if (setrlimit(RLIMIT_NOFILE, &r) != 0) {
getrlimit(RLIMIT_NOFILE, &r);
if (r.rlim_cur < r.rlim_max) {
r.rlim_cur = r.rlim_max;
setrlimit(RLIMIT_NOFILE, &r);
getrlimit(RLIMIT_NOFILE, &r);
}
}
}
if (r.rlim_cur < sockets)
qCritical("Current booted servers require minimum %d file descriptors when all slots are full, but only %lu file descriptors are allowed for this process. Your server will crash and burn; read the FAQ for details.", sockets, static_cast<unsigned long>(r.rlim_cur));
}
#endif
return true;
}
void Meta::kill(int srvnum) {
Server *s = qhServers.take(srvnum);
if (!s)
return;
emit stopped(s);
delete s;
}
void Meta::killAll() {
foreach(Server *s, qhServers) {
emit stopped(s);
delete s;
}
qhServers.clear();
}
void Meta::successfulConnectionFrom(const QHostAddress &addr) {
if (!mp.bBanSuccessful) {
QList<Timer> &ql = qhAttempts[addr];
// Seems like this is the most efficient way to clear the list, given:
// 1. ql.clear() allocates a new array
// 2. ql has less than iBanAttempts members
// 3. seems like ql.removeFirst() might actually copy elements to shift to the front
while (!ql.empty()) {
ql.removeLast();
}
}
}
bool Meta::banCheck(const QHostAddress &addr) {
if ((mp.iBanTries == 0) || (mp.iBanTimeframe == 0))
return false;
if (qhBans.contains(addr)) {
Timer t = qhBans.value(addr);
if (t.elapsed() < (1000000ULL * mp.iBanTime))
return true;
qhBans.remove(addr);
}
QList<Timer> &ql = qhAttempts[addr];
ql.append(Timer());
while (! ql.isEmpty() && (ql.at(0).elapsed() > (1000000ULL * mp.iBanTimeframe)))
ql.removeFirst();
if (ql.count() > mp.iBanTries) {
qhBans.insert(addr, Timer());
return true;
}
return false;
}
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