QCA

ssltest.cpp

The code below shows how to create an SSL client

/*
Copyright (C) 2003-2005 Justin Karneges <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <QtCrypto>
#include <QCoreApplication>
#include <QTcpSocket>
#ifdef QT_STATICPLUGIN
#include "import_plugins.h"
#endif
char exampleCA_cert[] =
"-----BEGIN CERTIFICATE-----\n"
"MIICSzCCAbSgAwIBAgIBADANBgkqhkiG9w0BAQUFADA4MRMwEQYDVQQDEwpFeGFt\n"
"cGxlIENBMQswCQYDVQQGEwJVUzEUMBIGA1UEChMLRXhhbXBsZSBPcmcwHhcNMDYw\n"
"MzE1MDY1ODMyWhcNMDYwNDE1MDY1ODMyWjA4MRMwEQYDVQQDEwpFeGFtcGxlIENB\n"
"MQswCQYDVQQGEwJVUzEUMBIGA1UEChMLRXhhbXBsZSBPcmcwgZ8wDQYJKoZIhvcN\n"
"AQEBBQADgY0AMIGJAoGBAL6ULdOxmpeZ+G/ypV12eNO4qnHSVIPTrYPkQuweXqPy\n"
"atwGFheG+hLVsNIh9GGOS0tCe7a3hBBKN0BJg1ppfk2x39cDx7hefYqjBuZvp/0O\n"
"8Ja3qlQiJLezITZKLxMBrsibcvcuH8zpfUdys2yaN+YGeqNfjQuoNN3Byl1TwuGJ\n"
"AgMBAAGjZTBjMB0GA1UdDgQWBBSQKCUCLNM7uKrAt5o7qv/yQm6qEzASBgNVHRMB\n"
"Af8ECDAGAQEBAgEIMB4GA1UdEQQXMBWBE2V4YW1wbGVAZXhhbXBsZS5jb20wDgYD\n"
"VR0PAQH/BAQDAgEGMA0GCSqGSIb3DQEBBQUAA4GBAAh+SIeT1Ao5qInw8oMSoTdO\n"
"lQ6h67ec/Jk5KmK4OoskuimmHI0Sp0C5kOCLehXbsVWW8pXsNC2fv0d2HkdaSUcX\n"
"hwLzqgyZXd4mupIYlaOTZhuHDwWPCAOZS4LVsi2tndTRHKCP12441JjNKhmZRhkR\n"
"u5zzD60nWgM9dKTaxuZM\n"
"-----END CERTIFICATE-----\n";
void showCertInfo(const QCA::Certificate &cert)
{
printf("-- Cert --\n");
printf(" CN: %s\n", qPrintable(cert.commonName()));
printf(" Valid from: %s, until %s\n",
qPrintable(cert.notValidBefore().toString()),
qPrintable(cert.notValidAfter().toString()));
printf(" PEM:\n%s\n", qPrintable(cert.toPEM()));
}
static QString validityToString(QCA::Validity v)
{
switch (v) {
s = QStringLiteral("Validated");
break;
s = QStringLiteral("Root CA is marked to reject the specified purpose");
break;
s = QStringLiteral("Certificate not trusted for the required purpose");
break;
s = QStringLiteral("Invalid signature");
break;
s = QStringLiteral("Invalid CA certificate");
break;
s = QStringLiteral("Invalid certificate purpose");
break;
s = QStringLiteral("Certificate is self-signed");
break;
s = QStringLiteral("Certificate has been revoked");
break;
s = QStringLiteral("Maximum certificate chain length exceeded");
break;
s = QStringLiteral("Certificate has expired");
break;
s = QStringLiteral("CA has expired");
break;
default:
s = QStringLiteral("General certificate validation error");
break;
}
return s;
}
class SecureTest : public QObject
{
public:
SecureTest()
{
sock_done = false;
ssl_done = false;
sock = new QTcpSocket;
connect(sock, &QTcpSocket::connected, this, &SecureTest::sock_connected);
connect(sock, &QTcpSocket::readyRead, this, &SecureTest::sock_readyRead);
connect(sock, QOverload<QAbstractSocket::SocketError>::of(&QTcpSocket::error), this, &SecureTest::sock_error);
ssl = new QCA::TLS;
connect(ssl, &QCA::TLS::certificateRequested, this, &SecureTest::ssl_certificateRequested);
connect(ssl, &QCA::TLS::handshaken, this, &SecureTest::ssl_handshaken);
connect(ssl, &QCA::TLS::readyRead, this, &SecureTest::ssl_readyRead);
connect(ssl, &QCA::TLS::readyReadOutgoing, this, &SecureTest::ssl_readyReadOutgoing);
connect(ssl, &QCA::TLS::closed, this, &SecureTest::ssl_closed);
connect(ssl, &QCA::TLS::error, this, &SecureTest::ssl_error);
}
~SecureTest() override
{
delete ssl;
delete sock;
}
void start(const QString &_host)
{
int n = _host.indexOf(QLatin1Char(':'));
int port;
if (n != -1) {
host = _host.mid(0, n);
port = _host.midRef(n + 1).toInt();
} else {
host = _host;
port = 443;
}
printf("Trying %s:%d...\n", qPrintable(host), port);
sock->connectToHost(host, port);
}
void quit();
private Q_SLOTS:
void sock_connected()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
printf("Connected, starting TLS handshake...\n");
// We add this one to show how, and to make it work with
// the server example.
printf("Warning: no root certs\n");
else
ssl->setTrustedCertificates(rootCerts);
ssl->startClient(host);
}
void sock_readyRead()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
ssl->writeIncoming(sock->readAll());
}
void sock_connectionClosed()
{
printf("\nConnection closed.\n");
sock_done = true;
if (ssl_done && sock_done)
emit quit();
}
void sock_error(QAbstractSocket::SocketError x)
{
sock_connectionClosed();
return;
}
printf("\nSocket error.\n");
emit quit();
}
void ssl_handshaken()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
printf("Successful SSL handshake using %s (%i of %i bits)\n",
qPrintable(ssl->cipherSuite()),
ssl->cipherBits(),
ssl->cipherMaxBits());
cert = ssl->peerCertificateChain().primary();
if (!cert.isNull())
showCertInfo(cert);
}
QString str = QStringLiteral("Peer Identity: ");
if (r == QCA::TLS::Valid)
str += QStringLiteral("Valid");
else if (r == QCA::TLS::HostMismatch)
str += QStringLiteral("Error: Wrong certificate");
str += QStringLiteral("Error: Invalid certificate.\n -> Reason: ") +
validityToString(ssl->peerCertificateValidity());
else
str += QStringLiteral("Error: No certificate");
printf("%s\n", qPrintable(str));
printf("Let's try a GET request now.\n");
QString req = QStringLiteral("GET / HTTP/1.0\nHost: ") + host + QStringLiteral("\n\n");
ssl->write(req.toLatin1());
}
void ssl_certificateRequested()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
printf("Server requested client certificate.\n");
if (!issuerList.isEmpty()) {
printf("Allowed issuers:\n");
foreach (QCA::CertificateInfoOrdered i, issuerList)
printf(" %s\n", qPrintable(i.toString()));
}
}
void ssl_readyRead()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
QByteArray a = ssl->read();
printf("%s", a.data());
}
void ssl_readyReadOutgoing()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
sock->write(ssl->readOutgoing());
}
void ssl_closed()
{
printf("SSL session closed.\n");
ssl_done = true;
if (ssl_done && sock_done)
emit quit();
}
void ssl_error()
{
// We just do this to help doxygen...
QCA::TLS *ssl = SecureTest::ssl;
int x = ssl->errorCode();
printf("SSL Handshake Error!\n");
emit quit();
} else {
printf("SSL Error!\n");
emit quit();
}
}
private:
QString host;
QTcpSocket * sock;
QCA::TLS * ssl;
bool sock_done, ssl_done;
};
#include "ssltest.moc"
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
QString host = argc > 1 ? QString::fromLocal8Bit(argv[1]) : QStringLiteral("andbit.net");
if (!QCA::isSupported("tls")) {
printf("TLS not supported!\n");
return 1;
}
SecureTest *s = new SecureTest;
QObject::connect(s, &SecureTest::quit, &app, &QCoreApplication::quit);
s->start(host);
app.exec();
delete s;
return 0;
}
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