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/* tnt/gnutls.h
* Copyright (C) 2006 Tommi Maekitalo
*
* 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) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef TNT_GNUTLS_H
#define TNT_GNUTLS_H
#include <cxxtools/tcpstream.h>
#include <gnutls/gnutls.h>
namespace tnt
{
class GnuTlsException : public std::runtime_error
{
unsigned long code;
static std::string formatMessage(const std::string& function, int code_);
public:
GnuTlsException(const std::string& function, int code_)
: std::runtime_error(formatMessage(function, code_)),
code(code_)
{ }
unsigned long getCode() const
{ return code; }
};
class GnuTlsInit
{
static unsigned initCount;
static gnutls_dh_params dhParams;
public:
GnuTlsInit();
~GnuTlsInit();
gnutls_dh_params getDhParams() const { return dhParams; }
};
class GnuTlsX509Cred
{
gnutls_certificate_credentials x509_cred;
GnuTlsInit init;
public:
GnuTlsX509Cred(const char* certificateFile, const char* privateKeyFile);
~GnuTlsX509Cred();
operator gnutls_certificate_credentials() const { return x509_cred; }
};
class GnuTlsServer : public cxxtools::net::Server
{
GnuTlsX509Cred cred;
public:
GnuTlsServer(const char* certificateFile, const char* privateKeyFile);
gnutls_certificate_credentials getCred() const { return cred; }
};
class GnuTlsStream : public cxxtools::net::Stream
{
gnutls_session session;
public:
GnuTlsStream()
: session(0)
{ }
explicit GnuTlsStream(int fd)
: cxxtools::net::Stream(fd)
{ }
explicit GnuTlsStream(const GnuTlsServer& server)
{ accept(server); }
~GnuTlsStream();
void accept(const GnuTlsServer& server);
int sslRead(char* buffer, int bufsize) const;
int sslWrite(const char* buffer, int bufsize) const;
void shutdown() const;
};
class GnuTls_streambuf : public std::streambuf
{
GnuTlsStream& m_stream;
char_type* m_buffer;
unsigned m_bufsize;
public:
explicit GnuTls_streambuf(GnuTlsStream& stream, unsigned bufsize = 256, int timeout = -1);
~GnuTls_streambuf()
{ delete[] m_buffer; }
void setTimeout(int t) { m_stream.setTimeout(t); }
int getTimeout() const { return m_stream.getTimeout(); }
/// overload std::streambuf
int_type overflow(int_type c);
/// overload std::streambuf
int_type underflow();
/// overload std::streambuf
int sync();
};
class GnuTls_iostream : public GnuTlsStream, public std::iostream
{
GnuTls_streambuf m_buffer;
public:
explicit GnuTls_iostream(unsigned bufsize = 256, int timeout = -1)
: GnuTlsStream(-1),
std::iostream(&m_buffer),
m_buffer(*this, bufsize, timeout)
{ }
explicit GnuTls_iostream(const GnuTlsServer& server, unsigned bufsize = 256, int timeout = -1)
: GnuTlsStream(server),
std::iostream(&m_buffer),
m_buffer(*this, bufsize, timeout)
{ }
void setTimeout(int timeout) { m_buffer.setTimeout(timeout); }
int getTimeout() const { return m_buffer.getTimeout(); }
};
}
#endif // TNT_GNUTLS_H
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