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// $Id$
//
// @(#)iioporb.cpp 1.8 95/09/19
// Copyright 1994-1995 by Sun Microsystems Inc.
// All Rights Reserved
//
// IIOP: ORB pseudo-object
//
// This includes objref stringification/destringification for IIOP
// object references.
#include "tao/IIOP_ORB.h"
#include "tao/CDR.h"
#include "tao/Typecode.h"
#include "tao/Environment.h"
#include "tao/Object.h"
#include "tao/Stub.h"
#include "tao/IIOP_Profile.h"
#include "tao/GIOP.h"
#include "tao/POA.h"
#include "tao/ORB_Core.h"
#if !defined (__ACE_INLINE__)
# include "tao/IIOP_ORB.i"
#endif /* ! __ACE_INLINE__ */
ACE_RCSID(tao, IIOP_ORB, "$Id$")
static const char ior_prefix [] = "IOR:";
// Objref stringification.
CORBA::String
IIOP_ORB::object_to_string (CORBA::Object_ptr obj,
CORBA::Environment &env)
{
env.clear ();
// Application writer controls what kind of objref strings they get,
// maybe along with other things, by how they initialize the ORB.
if (use_omg_ior_format_)
{
// By default, orbs use IOR strings; these are ugly (and error
// prone) but specified by CORBA.
//
// XXX there should be a simple way to reuse this code in other
// ORB implementations ...
// @@ Is BUFSIZ the right size here?
char buf [BUFSIZ];
TAO_OutputCDR cdr (buf,
sizeof buf,
TAO_ENCAP_BYTE_ORDER);
// support limited oref ACE_OS::strcmp.
(void) ACE_OS::memset (buf, 0, BUFSIZ);
// Marshal the objref into an encapsulation bytestream.
(void) cdr.write_octet (TAO_ENCAP_BYTE_ORDER);
if (cdr.encode (CORBA::_tc_Object,
&obj, 0,
env) != CORBA::TypeCode::TRAVERSE_CONTINUE)
return 0;
// Now hexify the encapsulated CDR data into a string, and
// return that string.
CORBA::String cp;
size_t len = cdr.length ();
CORBA::String string;
ACE_ALLOCATOR_RETURN (string,
CORBA::string_alloc (sizeof ior_prefix + 2 * len),
0);
ACE_OS::strcpy ((char *) string,
ior_prefix);
const char *bytes = cdr.buffer ();
for (cp = (CORBA::String) ACE_OS::strchr ((char *) string, ':') + 1;
len--;
bytes++)
{
*cp++ = ACE::nibble2hex ((*bytes) >> 4);
*cp++ = ACE::nibble2hex (*bytes);
}
*cp = 0;
return string;
}
else
{
// The "internet" ORB uses readable URL style objrefs, as used
// in the World Wide Web.
//
// This only works for IIOP objrefs. If we're handed an objref
// that's not an IIOP objref, fail -- application must use an
// ORB that's configured differently. @@ Is this true? FRED
if (obj->_stubobj () == 0)
return CORBA::string_copy ((CORBA::String) TAO_IIOP_Profile::prefix ());
// @@ This should be some sort of default prefix, not
// hardcoded to IIOP!! FRED
CORBA::String buf =
obj->_stubobj ()->profile_in_use ()->to_string (env);
return buf;
}
}
// Destringify OMG-specified "IOR" string.
//
// XXX there should be a simple way to reuse this code in other ORB
// implementations ...
static CORBA::Object_ptr
ior_string_to_object (const char *str,
CORBA::Environment &env)
{
// Unhex the bytes, and make a CDR deencapsulation stream from the
// resulting data.
ACE_Message_Block mb (ACE_OS::strlen ((char *) str) / 2
+ 1 + CDR::MAX_ALIGNMENT);
CDR::mb_align (&mb);
char *buffer = mb.rd_ptr ();
const char *tmp = str;
size_t len = 0;
while (tmp [0] && tmp [1])
{
u_char byte;
if (!(isxdigit (tmp [0]) && isxdigit (tmp [1])))
break;
byte = (u_char) (ACE::hex2byte (tmp [0]) << 4);
byte |= ACE::hex2byte (tmp [1]);
buffer [len++] = byte;
tmp += 2;
}
if (tmp [0] && !isspace (tmp [0]))
{
env.exception (new CORBA::BAD_PARAM (CORBA::COMPLETED_NO));
return CORBA::Object::_nil ();
}
// Create deencapsulation stream ... then unmarshal objref from that
// stream.
int byte_order = *(mb.rd_ptr ());
mb.rd_ptr (1);
mb.wr_ptr (len);
TAO_InputCDR stream (&mb, byte_order);
CORBA::Object_ptr objref=0;
if (stream.decode (CORBA::_tc_Object,
&objref, 0,
env) != CORBA::TypeCode::TRAVERSE_CONTINUE)
objref = 0;
return objref;
}
// Destringify URL style IIOP objref.
// @@ Fred, can you please put this into a class as a static method
// rather than having it floating around as a stand-alone function?
static CORBA::Object_ptr
iiop_string_to_object (const char *string,
CORBA::Environment &env)
{
// NIL objref encodes as just "iiop:" ... which has already been
// removed, so we see it as an empty string.
if (!string || !*string)
return CORBA::Object::_nil ();
// type ID not encoded in this string ... makes narrowing rather
// expensive, though it does ensure that type-safe narrowing code
// gets thoroughly excercised/debugged! Without a typeID, the
// _narrow will be required to make an expensive remote "is_a" call.
TAO_IIOP_Profile *pfile;
ACE_NEW_RETURN (pfile,
TAO_IIOP_Profile (string,
env),
CORBA::Object::_nil ());
// pfile refcount == 1
// Now make the STUB_Object ...
STUB_Object *data;
ACE_NEW_RETURN (data,
STUB_Object ((char *) 0,
pfile),
CORBA::Object::_nil ());
// pfile is given to STUB_Object so refcount still = 1
// Create the CORBA level proxy.
TAO_ServantBase *servant =
TAO_ORB_Core_instance ()->orb ()->_get_collocated_servant (data);
// This will increase the ref_count on data by one
CORBA_Object *obj;
ACE_NEW_RETURN (obj,
CORBA_Object (data,
servant,
servant != 0),
CORBA::Object::_nil ());
// Set the ref_count on data to 1, which is correct, because only
// obj has now a reference to it.
// data->_decr_refcnt ();
return obj;
}
// Destringify arbitrary objrefs. called from resolve_name_service ()
// with an IOR multicast_to_service ().
CORBA::Object_ptr
IIOP_ORB::string_to_object (const char *str,
CORBA::Environment &env)
{
env.clear ();
CORBA::Object_ptr obj = 0;
// Use the prefix code to choose which destringify algorithm to use.
const size_t iiop_prefix_len =
ACE_OS::strlen (TAO_IIOP_Profile::prefix ());
if (ACE_OS::strncmp (str,
TAO_IIOP_Profile::prefix (),
iiop_prefix_len) == 0)
obj = iiop_string_to_object (str + iiop_prefix_len, env);
else if (ACE_OS::strncmp (str,
ior_prefix,
sizeof ior_prefix - 1) == 0)
obj = ior_string_to_object (str + sizeof ior_prefix - 1, env);
// Return the object.
return obj;
}
TAO_ServantBase *
IIOP_ORB::_get_collocated_servant (STUB_Object *sobj)
{
// ACE_DEBUG ((LM_DEBUG, "IIOP_ORB: get_collocated_servant\n"));
if (this->optimize_collocation_objects_ && sobj != 0)
{
TAO_Profile *pfile = sobj->profile_in_use ();
// Make sure users passed in a valid STUB_Object otherwise, we
// don't know what to do next.
if (pfile == 0)
{
// @@ Fred, can you please either keep these debugging
// statements in or remove them, but please don't leave the
// #if 0's around!
#if 0
ACE_ERROR ((LM_ERROR,
"%p: Passing IIOP ORB and non-IIOP object\n",
"_get_collocated_object"));
#endif
// Something must be wrong!
return 0;
}
#if 0
ACE_DEBUG ((LM_DEBUG,
"IIOP_ORB: checking collocation for <%s>\n",
pfile->addr_to_string ()));
#endif
CORBA::Environment env;
TAO_ObjectKey_var objkey = pfile->_key (env);
if (env.exception ())
{
#if 0
ACE_DEBUG ((LM_DEBUG,
"IIOP_ORB: cannot find key for <%s>\n",
pfile->addr_to_string ()));
#endif
return 0;
}
// Check if the object requested is a collocated object.
// @@ FRED - can we make this more generic!!
TAO_POA *poa = 0;
if (pfile->tag () == TAO_IOP_TAG_INTERNET_IOP)
{
ACE_INET_Addr &addr =
ACE_dynamic_cast (ACE_INET_Addr &,
pfile->object_addr());
poa = TAO_ORB_Core_instance ()->get_collocated_poa (addr);
}
else
ACE_ERROR ((LM_ERROR,
"get_collocated_poa NOT Supported for NON-IIOP profile!\n"));
if (poa != 0)
{
PortableServer::Servant servant =
poa->find_servant (objkey.in (), env);
if (env.exception ())
{
#if 0
ACE_DEBUG ((LM_DEBUG,
"IIOP_ORB: cannot find servant for <%s>\n",
pfile->addr_to_string ()));
#endif
return 0;
}
#if 0
ACE_DEBUG ((LM_DEBUG,
"IIOP_ORB: object at <%s> is collocated\n",
pfile->addr_to_string ()));
#endif
return servant;
}
}
#if 0
ACE_DEBUG ((LM_DEBUG,
"IIOP_ORB: collocation failed for \n"));
#endif
return 0;
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Singleton<IIOP_ORB, ACE_SYNCH_RECURSIVE_MUTEX>;
template class ACE_Unbounded_Set<ACE_INET_Addr>;
template class ACE_Unbounded_Set_Iterator<ACE_INET_Addr>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
#pragma instantiate ACE_Singleton<IIOP_ORB, ACE_SYNCH_RECURSIVE_MUTEX>
#pragma instantiate ACE_Unbounded_Set<ACE_INET_Addr>
#pragma instantiate ACE_Unbounded_Set_Iterator<ACE_INET_Addr>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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