SslServer::SslServer(QObject *parent)
: QTcpServer(parent),
_isCertValid(false)
{
// Keep track if the SSL warning has been mentioned at least once before
static bool sslWarningShown = false;
if(Quassel::isOptionSet("ssl-cert")) {
_sslCertPath = Quassel::optionValue("ssl-cert");
} else {
_sslCertPath = Quassel::configDirPath() + "quasselCert.pem";
}
if(Quassel::isOptionSet("ssl-key")) {
_sslKeyPath = Quassel::optionValue("ssl-key");
} else {
_sslKeyPath = _sslCertPath;
}
// Initialize the certificates for first-time usage
if (!loadCerts()) {
if (!sslWarningShown) {
quWarning()
<< "SslServer: Unable to set certificate file\n"
<< " Quassel Core will still work, but cannot provide SSL for client connections.\n"
<< " Please see http://quassel-irc.org/faq/cert to learn how to enable SSL support.";
sslWarningShown = true;
}
}
}
bool SslServer::setCertificate(const QString &path)
{
_isCertValid = false;
if (path.isEmpty())
return false;
QFile certFile(path);
if (!certFile.exists()) {
quWarning() << "SslServer: Certificate file" << qPrintable(path) << "does not exist";
return false;
}
if (!certFile.open(QIODevice::ReadOnly)) {
quWarning()
<< "SslServer: Failed to open certificate file" << qPrintable(path)
<< "error:" << certFile.error();
return false;
}
QList<QSslCertificate> certList = QSslCertificate::fromDevice(&certFile);
if (certList.isEmpty()) {
quWarning() << "SslServer: Certificate file doesn't contain a certificate";
return false;
}
_cert = certList[0];
certList.removeFirst(); // remove server cert
// store CA and intermediates certs
_ca = certList;
if (!certFile.reset()) {
quWarning() << "SslServer: IO error reading certificate file";
return false;
}
_key = QSslKey(&certFile, QSsl::Rsa);
certFile.close();
if (_cert.isNull()) {
quWarning() << "SslServer:" << qPrintable(path) << "contains no certificate data";
return false;
}
if (!_cert.isValid()) {
quWarning() << "SslServer: Invalid certificate (most likely expired)";
// We allow the core to offer SSL anyway, so no "return false" here. Client will warn about the cert being invalid.
}
if (_key.isNull()) {
quWarning() << "SslServer:" << qPrintable(path) << "contains no key data";
return false;
}
_isCertValid = true;
return _isCertValid;
}
bool SslServer::reloadCerts()
{
if (loadCerts()) {
return true;
} else {
// Reloading certificates currently only occur in response to a request. Always print an
// error if something goes wrong, in order to simplify checking if it's working.
if (isCertValid()) {
quWarning()
<< "SslServer: Unable to reload certificate file, reverting\n"
<< " Quassel Core will use the previous key to provide SSL for client connections.\n"
<< " Please see http://quassel-irc.org/faq/cert to learn how to enable SSL support.";
} else {
quWarning()
<< "SslServer: Unable to reload certificate file\n"
<< " Quassel Core will still work, but cannot provide SSL for client connections.\n"
<< " Please see http://quassel-irc.org/faq/cert to learn how to enable SSL support.";
}
return false;
}
}
SslServer::SslServer(QObject *parent)
: QTcpServer(parent),
_isCertValid(false)
{
static bool sslWarningShown = false;
if (!setCertificate(Quassel::configDirPath() + "quasselCert.pem")) {
if (!sslWarningShown) {
quWarning()
<< "SslServer: Unable to set certificate file\n"
<< " Quassel Core will still work, but cannot provide SSL for client connections.\n"
<< " Please see http://quassel-irc.org/faq/cert to learn how to enable SSL support.";
sslWarningShown = true;
}
}
}
bool SslServer::setCertificate(const QString &path, const QString &keyPath)
{
// Don't reset _isCertValid here, in case an older but valid certificate is still loaded.
// Use temporary variables in order to avoid overwriting the existing certificates until
// everything is confirmed good.
QSslCertificate untestedCert;
QList<QSslCertificate> untestedCA;
QSslKey untestedKey;
if (path.isEmpty())
return false;
QFile certFile(path);
if (!certFile.exists()) {
quWarning() << "SslServer: Certificate file" << qPrintable(path) << "does not exist";
return false;
}
if (!certFile.open(QIODevice::ReadOnly)) {
quWarning()
<< "SslServer: Failed to open certificate file" << qPrintable(path)
<< "error:" << certFile.error();
return false;
}
QList<QSslCertificate> certList = QSslCertificate::fromDevice(&certFile);
if (certList.isEmpty()) {
quWarning() << "SslServer: Certificate file doesn't contain a certificate";
return false;
}
untestedCert = certList[0];
certList.removeFirst(); // remove server cert
// store CA and intermediates certs
untestedCA = certList;
if (!certFile.reset()) {
quWarning() << "SslServer: IO error reading certificate file";
return false;
}
// load key from keyPath if it differs from path, otherwise load key from path
if(path != keyPath) {
QFile keyFile(keyPath);
if(!keyFile.exists()) {
quWarning() << "SslServer: Key file" << qPrintable(keyPath) << "does not exist";
return false;
}
if (!keyFile.open(QIODevice::ReadOnly)) {
quWarning()
<< "SslServer: Failed to open key file" << qPrintable(keyPath)
<< "error:" << keyFile.error();
return false;
}
untestedKey = QSslKey(&keyFile, QSsl::Rsa);
keyFile.close();
} else {
untestedKey = QSslKey(&certFile, QSsl::Rsa);
}
certFile.close();
if (untestedCert.isNull()) {
quWarning() << "SslServer:" << qPrintable(path) << "contains no certificate data";
return false;
}
// We allow the core to offer SSL anyway, so no "return false" here. Client will warn about the cert being invalid.
const QDateTime now = QDateTime::currentDateTime();
if (now < untestedCert.effectiveDate())
quWarning() << "SslServer: Certificate won't be valid before" << untestedCert.effectiveDate().toString();
else if (now > untestedCert.expiryDate())
quWarning() << "SslServer: Certificate expired on" << untestedCert.expiryDate().toString();
else { // Qt4's isValid() checks for time range and blacklist; avoid a double warning, hence the else block
#if QT_VERSION < 0x050000
if (!untestedCert.isValid())
#else
if (untestedCert.isBlacklisted())
#endif
quWarning() << "SslServer: Certificate blacklisted";
}
if (untestedKey.isNull()) {
quWarning() << "SslServer:" << qPrintable(keyPath) << "contains no key data";
return false;
}
_isCertValid = true;
// All keys are valid, update the externally visible copy used for new connections.
_cert = untestedCert;
_ca = untestedCA;
_key = untestedKey;
return _isCertValid;
}
bool SslServer::setCertificate(const QString &path)
{
_isCertValid = false;
if (path.isEmpty())
return false;
QFile certFile(path);
if (!certFile.exists()) {
quWarning() << "SslServer: Certificate file" << qPrintable(path) << "does not exist";
return false;
}
if (!certFile.open(QIODevice::ReadOnly)) {
quWarning()
<< "SslServer: Failed to open certificate file" << qPrintable(path)
<< "error:" << certFile.error();
return false;
}
QList<QSslCertificate> certList = QSslCertificate::fromDevice(&certFile);
if (certList.isEmpty()) {
quWarning() << "SslServer: Certificate file doesn't contain a certificate";
return false;
}
_cert = certList[0];
certList.removeFirst(); // remove server cert
// store CA and intermediates certs
_ca = certList;
if (!certFile.reset()) {
quWarning() << "SslServer: IO error reading certificate file";
return false;
}
_key = QSslKey(&certFile, QSsl::Rsa);
certFile.close();
if (_cert.isNull()) {
quWarning() << "SslServer:" << qPrintable(path) << "contains no certificate data";
return false;
}
// We allow the core to offer SSL anyway, so no "return false" here. Client will warn about the cert being invalid.
const QDateTime now = QDateTime::currentDateTime();
if (now < _cert.effectiveDate())
quWarning() << "SslServer: Certificate won't be valid before" << _cert.effectiveDate().toString();
else if (now > _cert.expiryDate())
quWarning() << "SslServer: Certificate expired on" << _cert.expiryDate().toString();
else { // Qt4's isValid() checks for time range and blacklist; avoid a double warning, hence the else block
#if QT_VERSION < 0x050000
if (!_cert.isValid())
#else
if (_cert.isBlacklisted())
#endif
quWarning() << "SslServer: Certificate blacklisted";
}
if (_key.isNull()) {
quWarning() << "SslServer:" << qPrintable(path) << "contains no key data";
return false;
}
_isCertValid = true;
return _isCertValid;
}