Abstract away the protocol handshake code

[quassel.git] / src / common / authhandler.h

diff --git a/src/common/authhandler.h b/src/common/authhandler.h
new file mode 100644 (file)
index 0000000..6330fa9
--- /dev/null
+++ b/src/common/authhandler.h
@@ -0,0 +1,90 @@
+/***************************************************************************
+ *   Copyright (C) 2005-2013 by the Quassel Project                        *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) version 3.                                           *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+#ifndef AUTHHANDLER_H
+#define AUTHHANDLER_H
+
+#include <QTcpSocket>
+
+#include "protocol.h"
+
+class Peer;
+
+class AuthHandler : public QObject
+{
+    Q_OBJECT
+
+public:
+    enum State {
+        UnconnectedState,
+        HostLookupState,
+        ConnectingState,
+        ConnectedState,
+        RetryWithLegacyState,
+        AuthenticatingState,
+        AuthenticatedState,
+        ClosingState
+    };
+
+    AuthHandler(QObject *parent = 0);
+
+    State state() const;
+    QTcpSocket *socket() const;
+
+    virtual void handle(const Protocol::RegisterClient &) { invalidMessage(); }
+    virtual void handle(const Protocol::ClientDenied &) { invalidMessage(); }
+    virtual void handle(const Protocol::ClientRegistered &) { invalidMessage(); }
+    virtual void handle(const Protocol::SetupData &) { invalidMessage(); }
+    virtual void handle(const Protocol::SetupFailed &) { invalidMessage(); }
+    virtual void handle(const Protocol::SetupDone &) { invalidMessage(); }
+    virtual void handle(const Protocol::Login &) { invalidMessage(); }
+    virtual void handle(const Protocol::LoginFailed &) { invalidMessage(); }
+    virtual void handle(const Protocol::LoginSuccess &) { invalidMessage(); }
+    virtual void handle(const Protocol::SessionState &) { invalidMessage(); }
+
+    // fallback for unknown types, will trigger an error
+    template<class T>
+    void handle(const T &) { invalidMessage(); }
+
+public slots:
+    void close();
+
+signals:
+    void stateChanged(State state);
+    void disconnected();
+
+    void socketStateChanged(QAbstractSocket::SocketState state);
+    void socketError(QAbstractSocket::SocketError error, const QString &errorString);
+
+protected:
+    void setSocket(QTcpSocket *socket);
+    void setState(State state);
+
+private slots:
+    void socketError(QAbstractSocket::SocketError error);
+
+private:
+    void invalidMessage();
+
+    State _state;
+    QTcpSocket *_socket; // FIXME: should be a QSharedPointer? -> premature disconnect before the peer has taken over
+};
+
+#endif