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path: root/ace/SSL/SSL_SOCK_Acceptor.cpp
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// -*- C++ -*-
// $Id$
//

#include "SSL_SOCK_Acceptor.h"

#if defined (ACE_HAS_SSL)

#include <openssl/err.h>

ACE_ALLOC_HOOK_DEFINE(ACE_SSL_SOCK_Acceptor)

#if defined (ACE_LACKS_INLINE_FUNCTIONS)
#include "SSL_SOCK_Acceptor.i"
#endif /* ACE_LACKS_INLINE_FUNCTIONS */

int
ACE_SSL_SOCK_Acceptor::shared_accept_start (ACE_Time_Value *timeout,
					    int restart,
					    int &in_blocking_mode) const
{
  ACE_TRACE ("ACE_SSL_SOCK_Acceptor::shared_accept_start");

  ACE_HANDLE handle = this->get_handle ();

  // Handle the case where we're doing a timed <accept>.
  if (timeout != 0)
    {
      if (ACE::handle_timed_accept (handle,
				    timeout,
				    restart) == -1)
	return -1;
      else
	{
	  in_blocking_mode = ACE_BIT_DISABLED (ACE::get_flags (handle),
					       ACE_NONBLOCK);
	  // Set the handle into non-blocking mode if it's not already
	  // in it.
	  if (in_blocking_mode
	      && ACE::set_flags (handle,
				 ACE_NONBLOCK) == -1)
	    return -1;
	}
    }

  return 0;
}

int
ACE_SSL_SOCK_Acceptor::shared_accept_finish (ACE_SSL_SOCK_Stream& new_stream,
					     int in_blocking_mode,
					     int reset_new_handle) const
{
  ACE_TRACE ("ACE_SSL_SOCK_Acceptor::shared_accept_finish ()");

  ACE_HANDLE new_handle = new_stream.get_handle ();

  // Check to see if we were originally in blocking mode, and if so,
  // set the <new_stream>'s handle and <this> handle to be in blocking
  // mode.
  if (in_blocking_mode)
    {
      // Save/restore errno.
      ACE_Errno_Guard error (errno);

      // Only disable ACE_NONBLOCK if we weren't in non-blocking mode
      // originally.
      ACE::clr_flags (this->get_handle (),
                      ACE_NONBLOCK);
      ACE::clr_flags (new_handle,
                      ACE_NONBLOCK);
    }

#if defined (ACE_HAS_WINSOCK2) && (ACE_HAS_WINSOCK2 != 0)
  if (reset_new_handle)
    // Reset the event association inherited by the new handle.
    ::WSAEventSelect ((SOCKET) new_handle, 0, 0);
#else
  ACE_UNUSED_ARG (reset_new_handle);
#endif /* ACE_WIN32 */

  if (new_handle == ACE_INVALID_HANDLE)
    return -1;

  return this->ssl_accept (new_stream);
}

int
ACE_SSL_SOCK_Acceptor::ssl_accept (ACE_SSL_SOCK_Stream &new_stream) const
{
  if (SSL_is_init_finished (new_stream.ssl ()))
    return 0;

  ::SSL_set_accept_state (new_stream.ssl ());

  int status = ::SSL_accept (new_stream.ssl ());
  if (status <= 0)
    {
      if (::BIO_sock_should_retry (status))
        {
	  switch (::SSL_get_error (new_stream.ssl (), status))
	    {
	    case SSL_ERROR_WANT_WRITE:
            case SSL_ERROR_WANT_READ:
            case SSL_ERROR_WANT_X509_LOOKUP:
	      // If blocked, try again.
              errno = EWOULDBLOCK;
              break;
            default:
              ERR_print_errors_fp (stderr);
              break;
            }
        }
      else
        ERR_print_errors_fp (stderr);

      return -1;
    }

  return 0;
}

// General purpose routine for accepting new connections.
int
ACE_SSL_SOCK_Acceptor::accept (ACE_SSL_SOCK_Stream &new_stream,
                               ACE_Addr *remote_addr,
                               ACE_Time_Value *timeout,
                               int restart,
                               int reset_new_handle) const
{
  ACE_TRACE ("ACE_SSL_SOCK_Acceptor::accept");

  int in_blocking_mode = 0;
  if (this->shared_accept_start (timeout,
                                 restart,
                                 in_blocking_mode) == -1)
    return -1;
  else
    {
      // On Win32 the third parameter to <accept> must be a NULL
      // pointer if we want to ignore the client's address.
      int *len_ptr = 0;
      sockaddr *addr = 0;
      int len = 0;

      if (remote_addr != 0)
        {
          len = remote_addr->get_size ();
          len_ptr = &len;
          addr = (sockaddr *) remote_addr->get_addr ();
        }

      do
        new_stream.set_handle (ACE_OS::accept (this->get_handle (),
                                               addr,
                                               len_ptr));
      while (new_stream.get_handle () == ACE_INVALID_HANDLE
             && restart != 0
             && errno == EINTR
             && timeout == 0);

      // Reset the size of the addr, which is only necessary for UNIX
      // domain sockets.
      if (new_stream.get_handle () != ACE_INVALID_HANDLE
          && remote_addr != 0)
        remote_addr->set_size (len);
    }

  return this->shared_accept_finish (new_stream,
				     in_blocking_mode,
				     reset_new_handle);
}

int
ACE_SSL_SOCK_Acceptor::accept (ACE_SSL_SOCK_Stream &new_stream,
                               ACE_Accept_QoS_Params qos_params,
                               ACE_Addr *remote_addr,
                               ACE_Time_Value *timeout,
                               int restart,
			       int reset_new_handle) const
{
  ACE_TRACE ("ACE_SSL_SOCK_Acceptor::accept");

  int in_blocking_mode = 0;
  if (this->shared_accept_start (timeout,
				 restart,
				 in_blocking_mode) == -1)
    return -1;
  else
    {
      // On Win32 the third parameter to <accept> must be a NULL
      // pointer if we want to ignore the client's address.
      int *len_ptr = 0;
      sockaddr *addr = 0;
      int len = 0;

      if (remote_addr != 0)
        {
          len = remote_addr->get_size ();
          len_ptr = &len;
          addr = (sockaddr *) remote_addr->get_addr ();
        }

      do
        new_stream.set_handle (ACE_OS::accept (this->get_handle (),
                                               addr,
                                               len_ptr,
                                               qos_params));
      while (new_stream.get_handle () == ACE_INVALID_HANDLE
             && restart != 0
             && errno == EINTR
             && timeout == 0);

      // Reset the size of the addr, which is only necessary for UNIX
      // domain sockets.
      if (new_stream.get_handle () != ACE_INVALID_HANDLE
          && remote_addr != 0)
        remote_addr->set_size (len);
    }

  return this->shared_accept_finish (new_stream,
				     in_blocking_mode,
				     reset_new_handle);
}

#endif /* ACE_HAS_SSL */