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// $Id$

#include "CORBANAME_Parser.h"
#include "Invocation.h"
#include "Stub.h"
#include "debug.h"

#if !defined(__ACE_INLINE__)
#include "CORBANAME_Parser.i"
#endif /* __ACE_INLINE__ */

ACE_RCSID(tao, CORBANAME_Parser, "$Id$")

TAO_CORBANAME_Parser::~TAO_CORBANAME_Parser (void)
{
}

static const char corbaname_prefix[] = "corbaname:";

int
TAO_CORBANAME_Parser::match_prefix (const char *ior_string) const
{
  return (ACE_OS::strncmp (ior_string,
			   corbaname_prefix,
			   sizeof corbaname_prefix - 1)	== 0);
}

CORBA::Object_ptr
TAO_CORBANAME_Parser::
parse_string_dynamic_request_helper (CORBA::Object_ptr naming_context,
				     ACE_CString &key_string,
				     CORBA::Environment	&ACE_TRY_ENV)
  ACE_THROW_SPEC ((CORBA::SystemException))
{
  CORBA::Object_ptr _tao_retval	= CORBA::Object::_nil ();

  CORBA::Object_var _tao_safe_retval (_tao_retval);

  TAO_Stub *istub = naming_context->_stubobj ();
  if (istub == 0)
    ACE_THROW_RETURN (CORBA::INTERNAL (), 0);

  TAO_GIOP_Twoway_Invocation _tao_call (
      istub,
      "resolve_str",
      11,
      1,
      istub->orb_core ()
    );

  for (;;)
    {
      _tao_call.start (ACE_TRY_ENV);
      ACE_CHECK_RETURN (CORBA::Object::_nil ());

      CORBA::Short _tao_response_flag =	TAO_TWOWAY_RESPONSE_FLAG;

      _tao_call.prepare_header (
	  ACE_static_cast (CORBA::Octet, _tao_response_flag),
	  ACE_TRY_ENV
	);
      ACE_CHECK_RETURN (CORBA::Object::_nil ());

      TAO_OutputCDR &_tao_out =	_tao_call.out_stream ();
      if (!(
	    (_tao_out << key_string.c_str ())
	  ))
	ACE_THROW_RETURN (
	    CORBA::MARSHAL (TAO_DEFAULT_MINOR_CODE, CORBA::COMPLETED_NO),
	    CORBA::Object::_nil	()
	  );

      int _invoke_status = 0;
      ACE_TRY
	{
	  _invoke_status = _tao_call.invoke (0,	0, ACE_TRY_ENV);
	  ACE_TRY_CHECK	(CORBA::Object::_nil ());
	}
      ACE_CATCH	(CORBA::UNKNOWN, ex)
	{
	  ACE_UNUSED_ARG (ex);

	  ACE_THROW_RETURN (
	      CORBA::BAD_PARAM (TAO_OMG_VMCID |	10,
				CORBA::COMPLETED_YES),
	      CORBA::Object::_nil ()
	    );
	}
      ACE_ENDTRY;
      ACE_CHECK_RETURN (CORBA::Object::_nil ());

      if (_invoke_status == TAO_INVOKE_RESTART)
	{
	  _tao_call.restart_flag (1);
	  continue;
	}
      if (_invoke_status != TAO_INVOKE_OK)
	{
	  // @@	Is there any way we can	reach this point?  Any
	  //	USER_EXCEPTION response	will be	caught by the UNKNOWN
	  //	catch block above.  Any	SYSTEM_EXCEPTION response will
	  //	be simply raised, and any RESTART is handled
	  //	already...  leave this here "just in case".
	  ACE_THROW_RETURN (
	      CORBA::BAD_PARAM (TAO_OMG_VMCID |	10,
				CORBA::COMPLETED_YES),
	      CORBA::Object::_nil ()
	    );
	}
      TAO_InputCDR &_tao_in = _tao_call.inp_stream ();
      if (!(
	    (_tao_in >>	_tao_safe_retval.inout ())
	  ))
	{
	  ACE_THROW_RETURN (
	      CORBA::MARSHAL (TAO_DEFAULT_MINOR_CODE, CORBA::COMPLETED_YES),
	      CORBA::Object::_nil ()
	    );
	}
      break;
    }

  return _tao_safe_retval._retn	();
}

CORBA::Object_ptr
TAO_CORBANAME_Parser::parse_string (const char *ior,
				    CORBA::ORB_ptr orb,
				    CORBA::Environment &ACE_TRY_ENV)
  ACE_THROW_SPEC ((CORBA::SystemException))
{

  // Skip the prefix, we know it is there because this method in only
  // called if <match_prefix> returns 1.
  const	char *corbaname	=
    ior	+ sizeof corbaname_prefix - 1;

  CORBA::Object_ptr obj	= CORBA::Object::_nil ();

  ACE_TRY
    {
      char rir_prot [] = "rir:";

      // The position of the seperator between the obj_addr and	key
      // string
      CORBA::ULong pos_seperator = 0;

      ACE_CString corbaname_str	(corbaname, 0, 1);

      pos_seperator = corbaname_str.find ("#", 0);

      // Get the Key String
      ACE_CString key_string =
	corbaname_str.substring	(pos_seperator + 1,
				 -1);

      // Make it in a form understandable by <corbaloc>	scheme
      ACE_CString corbaloc_addr	("corbaloc:", 0, 1);

      if (ACE_OS::strncmp (corbaname,
			   rir_prot,
			   sizeof (rir_prot)) != 0)
	{
	  // Implies that <iiop:> protocol is to be used.
	  // So	.. we need to get the host address where an object of
	  // type NamingContext	can be found.
	  // Get the obj_addr
	  ACE_CString obj_addr = corbaname_str.substring (0,
							  pos_seperator);

	  corbaloc_addr	+= obj_addr;

	}

      ACE_CString name_service ("/NameService",	0, 1);
      corbaloc_addr += name_service;

      // Obtain	a reference to the naming context
      CORBA::Object_var	name_context =
	orb->string_to_object (corbaloc_addr.c_str (),
			       ACE_TRY_ENV);
      ACE_TRY_CHECK;

      // Check if the Object reference is nil.
      if (CORBA::is_nil	(name_context.in ()))
	ACE_ERROR_RETURN ((LM_ERROR,
			   "Cannot resolve Naming Service: CORBANAME_Parser\n"),
			  0);

      CORBA::Boolean is_a =
	name_context->_is_a ("IDL:omg.org/CosNaming/NamingContextExt:1.0",
			     ACE_TRY_ENV);
      ACE_TRY_CHECK;

      if (!is_a)
	{
	  ACE_ERROR_RETURN ((LM_ERROR,
			     "Cannot narrow Naming Service: "
			     "CORBANAME_Parser\n"),
			    0);
	}

      // Make a	dynamic	request	for resolve_str	in this	naming context
      obj = this->parse_string_dynamic_request_helper (name_context.in (),
						       key_string,
						       ACE_TRY_ENV);
      ACE_TRY_CHECK;
    }
  ACE_CATCH (CORBA::SystemException, ex)
    {
      if (TAO_debug_level >= 4)
        {
          ACE_PRINT_EXCEPTION (ex, "CORBANAME_Parser");
        }
    }
  ACE_ENDTRY;
  ACE_CHECK_RETURN (CORBA::Object::_nil	());

  return obj;
}

ACE_STATIC_SVC_DEFINE (TAO_CORBANAME_Parser,
		       ACE_TEXT	("CORBANAME_Parser"),
		       ACE_SVC_OBJ_T,
		       &ACE_SVC_NAME (TAO_CORBANAME_Parser),
		       ACE_Service_Type::DELETE_THIS |
				  ACE_Service_Type::DELETE_OBJ,
		       0)

ACE_FACTORY_DEFINE (TAO, TAO_CORBANAME_Parser)

#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)

#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)

#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */