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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002-2013 Vincent Richard <[email protected]>
//
// 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 3 of
// the License, or (at your option) any later version.
//
// 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.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/config.hpp"
#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT
#include "vmime/security/sasl/SASLSocket.hpp"
#include "vmime/security/sasl/SASLSession.hpp"
#include "vmime/exception.hpp"
#include <algorithm>
#include <gsasl.h>
namespace vmime {
namespace security {
namespace sasl {
SASLSocket::SASLSocket(shared_ptr <SASLSession> sess, shared_ptr <net::socket> wrapped)
: m_session(sess), m_wrapped(wrapped),
m_pendingBuffer(0), m_pendingPos(0), m_pendingLen(0)
{
}
SASLSocket::~SASLSocket()
{
if (m_pendingBuffer)
delete [] m_pendingBuffer;
}
void SASLSocket::connect(const string& address, const port_t port)
{
m_wrapped->connect(address, port);
}
void SASLSocket::disconnect()
{
m_wrapped->disconnect();
}
bool SASLSocket::isConnected() const
{
return m_wrapped->isConnected();
}
SASLSocket::size_type SASLSocket::getBlockSize() const
{
return m_wrapped->getBlockSize();
}
const string SASLSocket::getPeerName() const
{
return m_wrapped->getPeerName();
}
const string SASLSocket::getPeerAddress() const
{
return m_wrapped->getPeerAddress();
}
void SASLSocket::receive(string& buffer)
{
const size_type n = receiveRaw(m_recvBuffer, sizeof(m_recvBuffer));
buffer = string(m_recvBuffer, n);
}
SASLSocket::size_type SASLSocket::receiveRaw(char* buffer, const size_type count)
{
if (m_pendingLen != 0)
{
const size_type copyLen =
(count >= m_pendingLen ? m_pendingLen : count);
std::copy(m_pendingBuffer + m_pendingPos,
m_pendingBuffer + m_pendingPos + copyLen,
buffer);
m_pendingLen -= copyLen;
m_pendingPos += copyLen;
if (m_pendingLen == 0)
{
delete [] m_pendingBuffer;
m_pendingBuffer = 0;
m_pendingPos = 0;
m_pendingLen = 0;
}
return copyLen;
}
const size_type n = m_wrapped->receiveRaw(buffer, count);
byte_t* output = 0;
long outputLen = 0;
m_session->getMechanism()->decode
(m_session, reinterpret_cast <const byte_t*>(buffer), n,
&output, &outputLen);
// If we can not copy all decoded data into the output buffer, put
// remaining data into a pending buffer for next calls to receive()
if (outputLen > count)
{
std::copy(output, output + count, buffer);
m_pendingBuffer = output;
m_pendingLen = outputLen;
m_pendingPos = count;
return count;
}
else
{
std::copy(output, output + outputLen, buffer);
delete [] output;
return outputLen;
}
}
void SASLSocket::send(const string& buffer)
{
sendRaw(buffer.data(), buffer.length());
}
void SASLSocket::sendRaw(const char* buffer, const size_type count)
{
byte_t* output = 0;
long outputLen = 0;
m_session->getMechanism()->encode
(m_session, reinterpret_cast <const byte_t*>(buffer), count,
&output, &outputLen);
try
{
m_wrapped->sendRaw
(reinterpret_cast <const char*>(output), outputLen);
}
catch (...)
{
delete [] output;
throw;
}
delete [] output;
}
SASLSocket::size_type SASLSocket::sendRawNonBlocking(const char* buffer, const size_type count)
{
byte_t* output = 0;
long outputLen = 0;
m_session->getMechanism()->encode
(m_session, reinterpret_cast <const byte_t*>(buffer), count,
&output, &outputLen);
size_type bytesSent = 0;
try
{
bytesSent = m_wrapped->sendRawNonBlocking
(reinterpret_cast <const char*>(output), outputLen);
}
catch (...)
{
delete [] output;
throw;
}
delete [] output;
return bytesSent;
}
unsigned int SASLSocket::getStatus() const
{
return m_wrapped->getStatus();
}
} // sasl
} // security
} // vmime
#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT
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