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//
// SSLConnection.cc
//
// SSLConnection: This class forms a easy to use interface to the
// socket interface using SSL connection encryption.
//
// Part of the ht://Dig package <https://htdig.sourceforge.net/>
// Copyright (c) 1999-2004 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU Library General Public License (LGPL) version 2 or later
// <http://www.gnu.org/copyleft/lgpl.html>
//
// $Id: SSLConnection.cc,v 1.6 2004/05/28 13:15:23 lha Exp $
//
#ifdef HAVE_CONFIG_H
#include "htconfig.h"
#endif /* HAVE_CONFIG_H */
#ifdef HAVE_SSL_H
#include "SSLConnection.h"
#ifdef HAVE_STD
#include <iostream>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif
#else
#include <iostream.h>
#endif /* HAVE_STD */
// Global needed only once in HtDig
//
SSL_CTX *SSLConnection::ctx = NULL;
SSLConnection::SSLConnection()
{
InitSSL();
}
SSLConnection::SSLConnection(int socket)
{
InitSSL();
}
void SSLConnection::InitSSL()
{
if( ctx == NULL )
{
// Add in the OpenSSL algorithms ??
//
OpenSSL_add_ssl_algorithms();
// Load the error strings ... openssl says so
//
SSL_load_error_strings();
// New CTX, either v3 but can default to v2
//
ctx = SSL_CTX_new (SSLv23_client_method());
if( ctx == NULL )
{
cout << "ctx NULL" << endl;
exit(1);
}
}
}
SSLConnection::~SSLConnection()
{
if( ctx != NULL )
SSL_CTX_free (ctx);
ctx = NULL;
}
int SSLConnection::Connect()
{
// Run the standard connect
//
int ret = Connection::Connect();
if( ret != OK )
return ret;
// Now start SSL negotiation
//
ssl = SSL_new (ctx);
// Attach ssl to socket
//
SSL_set_fd (ssl, sock);
int err = SSL_connect (ssl);
if( err == -1)
{
// cout << "SSL_connect failed!" << endl;
// Close the socket
//
Connection::Close();
return NOTOK;
}
return OK;
}
int SSLConnection::Close()
{
// First kill the SSL stuff
//
SSL_shutdown (ssl); /* send SSL/TLS close_notify */
/* Clean up. */
// Now call the Connection Close
//
int ret = Connection::Close();
if( ret == OK )
{
SSL_free (ssl);
}
return ret;
}
int SSLConnection::Read_Partial(char *buffer, int maxlength)
{
int count;
need_io_stop = 0;
do
{
errno = 0;
if (timeout_value > 0) {
FD_SET_T fds;
FD_ZERO(&fds);
FD_SET(sock, &fds);
timeval tv;
tv.tv_sec = timeout_value;
tv.tv_usec = 0;
int selected = select(sock+1, &fds, 0, 0, &tv);
if (selected <= 0)
need_io_stop++;
}
if (!need_io_stop)
count = SSL_read(ssl, buffer, maxlength);
else
count = -1; // Input timed out
}
while (count <= 0 && errno == EINTR && !need_io_stop);
need_io_stop = 0;
return count;
}
//*************************************************************************
// int Connection::Write_Partial(char *buffer, int maxlength)
//
int SSLConnection::Write_Partial(char *buffer, int maxlength)
{
int count;
do
{
count = SSL_write(ssl, buffer, maxlength);
}
while (count < 0 && errno == EINTR && !need_io_stop);
need_io_stop = 0;
return count;
}
#endif
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