qca/examples/sslservtest/sslservtest.cpp

/*
 Copyright (C) 2003 Justin Karneges

 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.
*/

// TODO: this code needs to be updated for QCA2
#include<qapplication.h>
#include<qfile.h>
#include<qsocket.h>
#include<qserversocket.h>
#include<qvaluelist.h>
#include<qtimer.h>
#include"qca.h"

char pemdata_cert[] =
	"-----BEGIN CERTIFICATE-----\n"
	"MIIDbjCCAtegAwIBAgIBADANBgkqhkiG9w0BAQQFADCBhzELMAkGA1UEBhMCVVMx\n"
	"EzARBgNVBAgTCkNhbGlmb3JuaWExDzANBgNVBAcTBklydmluZTEYMBYGA1UEChMP\n"
	"RXhhbXBsZSBDb21wYW55MRQwEgYDVQQDEwtleGFtcGxlLmNvbTEiMCAGCSqGSIb3\n"
	"DQEJARYTZXhhbXBsZUBleGFtcGxlLmNvbTAeFw0wMzA3MjQwNzMwMDBaFw0wMzA4\n"
	"MjMwNzMwMDBaMIGHMQswCQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEP\n"
	"MA0GA1UEBxMGSXJ2aW5lMRgwFgYDVQQKEw9FeGFtcGxlIENvbXBhbnkxFDASBgNV\n"
	"BAMTC2V4YW1wbGUuY29tMSIwIAYJKoZIhvcNAQkBFhNleGFtcGxlQGV4YW1wbGUu\n"
	"Y29tMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCobzCF268K2sRp473gvBTT\n"
	"4AgSL1kjeF8N57vxS1P8zWrWMXNs4LuH0NRZmKTajeboy0br8xw+smIy3AbaKAwW\n"
	"WZToesxebu3m9VeA8dqWyOaUMjoxAcgVYesgVaMpjRe7fcWdJnX1wJoVVPuIcO8m\n"
	"a+AAPByfTORbzpSTmXAQAwIDAQABo4HnMIHkMB0GA1UdDgQWBBTvFierzLmmYMq0\n"
	"cB/+5rK1bNR56zCBtAYDVR0jBIGsMIGpgBTvFierzLmmYMq0cB/+5rK1bNR566GB\n"
	"jaSBijCBhzELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWExDzANBgNV\n"
	"BAcTBklydmluZTEYMBYGA1UEChMPRXhhbXBsZSBDb21wYW55MRQwEgYDVQQDEwtl\n"
	"eGFtcGxlLmNvbTEiMCAGCSqGSIb3DQEJARYTZXhhbXBsZUBleGFtcGxlLmNvbYIB\n"
	"ADAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBAUAA4GBAGqGhXf7xNOnYNtFO7gz\n"
	"K6RdZGHFI5q1DAEz4hhNBC9uElh32XGX4wN7giz3zLC8v9icL/W4ff/K5NDfv3Gf\n"
	"gQe/+Wo9Be3H3ul6uwPPFnx4+PIOF2a5TW99H9smyxWdNjnFtcUte4al3RszcMWG\n"
	"x3iqsWosGtj6F+ridmKoqKLu\n"
	"-----END CERTIFICATE-----\n";

char pemdata_privkey[] =
	"-----BEGIN RSA PRIVATE KEY-----\n"
	"MIICXAIBAAKBgQCobzCF268K2sRp473gvBTT4AgSL1kjeF8N57vxS1P8zWrWMXNs\n"
	"4LuH0NRZmKTajeboy0br8xw+smIy3AbaKAwWWZToesxebu3m9VeA8dqWyOaUMjox\n"
	"AcgVYesgVaMpjRe7fcWdJnX1wJoVVPuIcO8ma+AAPByfTORbzpSTmXAQAwIDAQAB\n"
	"AoGAP83u+aYghuIcaWhmM03MLf69z/WztKYSi/fu0BcS977w67bL3MC9CVPoPRB/\n"
	"0nLSt/jZIuRzHKUCYfXLerSU7v0oXDTy6GPzWMh/oXIrpF0tYNbwWF7LSq2O2gGZ\n"
	"XtA9MSmUNNJaKzQQeXjqdVFOY8A0Pho+k2KByBiCi+ChkcECQQDRUuyX0+PKJtA2\n"
	"M36BOTFpy61BAv+JRlXUnHuevOfQWl6NR6YGygqCyH1sWtP1sa9S4wWys3DFH+5A\n"
	"DkuAqk7zAkEAzf4eUH2hp5CIMsXH+WpIzKj09oY1it2CAKjVq4rUELf8iXvmGoFl\n"
	"000spua4MjHNUYm7LR0QaKesKrMyGZUesQJAL8aLdYPJI+SD9Tr/jqLtIkZ4frQe\n"
	"eshw4pvsoyheiHF3zyshO791crAr4EVCx3sMlxB1xnmqLXPCPyCEHxO//QJBAIBY\n"
	"IYkjDZJ6ofGIe1UyXJNvfdkPu9J+ut4wU5jjEcgs6mK62J6RGuFxhy2iOQfFMdjo\n"
	"yL+OCUg7mDCun7uCxrECQAtSvnLOFMjO5qExRjFtwi+b1rcSekd3Osk/izyRFSzg\n"
	"Or+AL56/EKfiogNnFipgaXIbb/xj785Cob6v96XoW1I=\n"
	"-----END RSA PRIVATE KEY-----\n";

class LayerTracker
{
public:
	struct Item
	{
		int plain;
		int encoded;
	};

	LayerTracker()
	{
		p = 0;
	}

	void reset()
	{
		p = 0;
		list.clear();
	}

	void addPlain(int plain)
	{
		p += plain;
	}

	void specifyEncoded(int encoded, int plain)
	{
		// can't specify more bytes than we have
		if(plain > p)
			plain = p;
		p -= plain;
		Item i;
		i.plain = plain;
		i.encoded = encoded;
		list += i;
	}

	int finished(int encoded)
	{
		int plain = 0;
		for(QValueList<Item>::Iterator it = list.begin(); it != list.end();) {
			Item &i = *it;

			// not enough?
			if(encoded < i.encoded) {
				i.encoded -= encoded;
				break;
			}

			encoded -= i.encoded;
			plain += i.plain;
			it = list.remove(it);
		}
		return plain;
	}

	int p;
	QValueList<Item> list;
};

class SecureServerTest : public QServerSocket
{
	Q_OBJECT
public:
	enum { Idle, Handshaking, Active, Closing };

	SecureServerTest(int _port) : QServerSocket(_port), port(_port)
	{
		sock = new QSocket;
		connect(sock, SIGNAL(readyRead()), SLOT(sock_readyRead()));
		connect(sock, SIGNAL(connectionClosed()), SLOT(sock_connectionClosed()));
		connect(sock, SIGNAL(error(int)), SLOT(sock_error(int)));
		connect(sock, SIGNAL(bytesWritten(int)), SLOT(sock_bytesWritten(int)));

		ssl = new QCA::TLS;
		connect(ssl, SIGNAL(handshaken()), SLOT(ssl_handshaken()));
		connect(ssl, SIGNAL(readyRead()), SLOT(ssl_readyRead()));
		connect(ssl, SIGNAL(readyReadOutgoing(int)), SLOT(ssl_readyReadOutgoing(int)));
		connect(ssl, SIGNAL(closed()), SLOT(ssl_closed()));
		connect(ssl, SIGNAL(error(int)), SLOT(ssl_error(int)));

		cert.fromPEM(pemdata_cert);
		privkey.fromPEM(pemdata_privkey);

		mode = Idle;
	}

	~SecureServerTest()
	{
		delete ssl;
		delete sock;
	}

	void start()
	{
		if(cert.isNull() || privkey.isNull()) {
			printf("Error loading cert and/or private key!\n");
			QTimer::singleShot(0, this, SIGNAL(quit()));
			return;
		}
		if(!ok()) {
			printf("Error binding to port %d!\n", port);
			QTimer::singleShot(0, this, SIGNAL(quit()));
			return;
		}
		printf("Listening on port %d ...\n", port);
	}

	void newConnection(int s)
	{
		// Note: only 1 connection supported at a time in this example!
		if(sock->isOpen()) {
			QSocket tmp;
			tmp.setSocket(s);
			printf("throwing away extra connection\n");
			return;
		}
		mode = Handshaking;
		sock->setSocket(s);
		printf("Connection received!  Starting TLS handshake...\n");
		ssl->setCertificate(cert, privkey);
		ssl->startServer();
	}

signals:
	void quit();

private slots:
	void sock_readyRead()
	{
		QByteArray buf(sock->bytesAvailable());
		int num = sock->readBlock(buf.data(), buf.size());
		if(num < (int)buf.size())
			buf.resize(num);
		ssl->writeIncoming(buf);
	}

	void sock_connectionClosed()
	{
		printf("Connection closed.\n");
	}

	void sock_bytesWritten(int x)
	{
		if(mode == Active && sent) {
			int bytes = layer.finished(x);
			bytesLeft -= bytes;

			if(bytesLeft == 0) {
				mode = Closing;
				printf("SSL shutdown\n");
				ssl->close();
			}
		}
	}

	void sock_error(int)
	{
		printf("Socket error.\n");
	}

	void ssl_handshaken()
	{
		printf("Successful SSL handshake.  Waiting for newline.\n");
		layer.reset();
		bytesLeft = 0;
		sent = false;
		mode = Active;
	}

	void ssl_readyRead()
	{
		QByteArray a = ssl->read();
		QString str =
			"<html>\n"
			"<head><title>Test</title></head>\n"
			"<body>this is only a test</body>\n"
			"</html>\n";
		QCString cs = str.latin1();
		QByteArray b(cs.length());
		memcpy(b.data(), cs.data(), b.size());

		printf("Sending test response...\n");
		sent = true;
		layer.addPlain(b.size());
		ssl->write(b);
	}

	void ssl_readyReadOutgoing(int plainBytes)
	{
		QByteArray a = ssl->readOutgoing();
		layer.specifyEncoded(a.size(), plainBytes);
		sock->writeBlock(a.data(), a.size());
	}

	void ssl_closed()
	{
		printf("Closing.\n");
		sock->close();
	}

	void ssl_error(int x)
	{
		if(x == QCA::TLS::ErrHandshake) {
			printf("SSL Handshake Error!  Closing.\n");
			sock->close();
		}
		else {
			printf("SSL Error!  Closing.\n");
			sock->close();
		}
	}

private:
	int port;
	QSocket *sock;
	QCA::TLS *ssl;
	QCA::Cert cert;
	QCA::RSAKey privkey;

	bool sent;
	int mode;
	int bytesLeft;
	LayerTracker layer;
};

#include"sslservtest.moc"

int main(int argc, char **argv)
{
	QApplication app(argc, argv, false);
	int port = argc > 1 ? QString(argv[1]).toInt() : 8000;

	if(!QCA::isSupported(QCA::CAP_TLS)) {
		printf("TLS not supported!\n");
		return 1;
	}

	SecureServerTest *s = new SecureServerTest(port);
	QObject::connect(s, SIGNAL(quit()), &app, SLOT(quit()));
	s->start();
	app.exec();
	delete s;

	return 0;
}