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264 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <osl/diagnose.h>
#include <osl/interlck.h>
#include <rtl/ustring.hxx>
#include <typelib/typedescription.h>
#include <uno/dispatcher.h>
#include <uno/environment.h>
#include <uno/mapping.h>
#include <uno/lbnames.h>
namespace pseudo_uno
{
struct pseudo_Mapping : public uno_Mapping
{
oslInterlockedCount nRef;
uno_ExtEnvironment * pFrom;
uno_ExtEnvironment * pTo;
pseudo_Mapping( uno_ExtEnvironment * pFrom_, uno_ExtEnvironment * pTo_ );
~pseudo_Mapping();
};
//==== a UNO pseudo proxy =============================================================================
struct pseudo_unoInterfaceProxy : public uno_Interface
{
oslInterlockedCount nRef;
pseudo_Mapping * pPseudoMapping;
// mapping information
uno_Interface * pUnoI; // wrapped interface
typelib_InterfaceTypeDescription * pTypeDescr;
OUString oid;
// ctor
inline pseudo_unoInterfaceProxy( pseudo_Mapping * pPseudoMapping_,
uno_Interface * pUnoI_,
typelib_InterfaceTypeDescription * pTypeDescr_,
const OUString & rOId_ );
};
static void SAL_CALL pseudo_unoInterfaceProxy_dispatch(
uno_Interface * pUnoI,
const typelib_TypeDescription * pMemberType,
void * pReturn,
void * pArgs[],
uno_Any ** ppException )
{
pseudo_unoInterfaceProxy * pThis = static_cast< pseudo_unoInterfaceProxy * >( pUnoI );
(*pThis->pUnoI->pDispatcher)( pThis->pUnoI, pMemberType, pReturn, pArgs, ppException );
}
static void SAL_CALL pseudo_unoInterfaceProxy_free( uno_ExtEnvironment * pEnv, void * pProxy )
{
pseudo_unoInterfaceProxy * pThis =
static_cast< pseudo_unoInterfaceProxy * >(
reinterpret_cast< uno_Interface * >( pProxy ) );
OSL_ASSERT( pEnv == pThis->pPseudoMapping->pTo );
(*pThis->pPseudoMapping->pFrom->revokeInterface)( pThis->pPseudoMapping->pFrom, pThis->pUnoI );
(*pThis->pUnoI->release)( pThis->pUnoI );
typelib_typedescription_release( (typelib_TypeDescription *)pThis->pTypeDescr );
(*pThis->pPseudoMapping->release)( pThis->pPseudoMapping );
#if OSL_DEBUG_LEVEL > 0
*(int *)pProxy = 0xdeadbabe;
#endif
delete pThis;
}
static void SAL_CALL pseudo_unoInterfaceProxy_acquire( uno_Interface * pUnoI )
{
if (1 == osl_atomic_increment( &static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->nRef ))
{
// rebirth of proxy zombie
// register at uno env
void * pThis = static_cast< uno_Interface * >( pUnoI );
(*static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->pPseudoMapping->pTo->registerProxyInterface)(
static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->pPseudoMapping->pTo,
&pThis, pseudo_unoInterfaceProxy_free,
static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->oid.pData,
static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->pTypeDescr );
OSL_ASSERT( pThis == static_cast< uno_Interface * >( pUnoI ) );
}
}
static void SAL_CALL pseudo_unoInterfaceProxy_release( uno_Interface * pUnoI )
{
if (! osl_atomic_decrement( & static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->nRef ))
{
// revoke from uno env on last release
(*static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->pPseudoMapping->pTo->revokeInterface)(
static_cast< pseudo_unoInterfaceProxy * >( pUnoI )->pPseudoMapping->pTo, pUnoI );
}
}
inline pseudo_unoInterfaceProxy::pseudo_unoInterfaceProxy(
pseudo_Mapping * pPseudoMapping_, uno_Interface * pUnoI_,
typelib_InterfaceTypeDescription * pTypeDescr_, const OUString & rOId_ )
: nRef( 1 )
, pPseudoMapping( pPseudoMapping_ )
, pUnoI( pUnoI_ )
, pTypeDescr( pTypeDescr_ )
, oid( rOId_ )
{
(*pPseudoMapping->acquire)( pPseudoMapping );
typelib_typedescription_acquire( (typelib_TypeDescription *)pTypeDescr );
(*pPseudoMapping->pFrom->registerInterface)(
pPseudoMapping->pFrom, reinterpret_cast< void ** >( &pUnoI ), oid.pData, pTypeDescr );
(*pUnoI->acquire)( pUnoI );
// uno_Interface
uno_Interface::acquire = pseudo_unoInterfaceProxy_acquire;
uno_Interface::release = pseudo_unoInterfaceProxy_release;
uno_Interface::pDispatcher = pseudo_unoInterfaceProxy_dispatch;
}
static void SAL_CALL pseudo_Mapping_mapInterface(
uno_Mapping * pMapping, void ** ppOut,
void * pUnoI, typelib_InterfaceTypeDescription * pTypeDescr )
{
OSL_ASSERT( ppOut && pTypeDescr );
if (*ppOut)
{
(*reinterpret_cast< uno_Interface * >( *ppOut )->release)(
reinterpret_cast< uno_Interface * >( *ppOut ) );
*ppOut = 0;
}
if (pUnoI && pTypeDescr)
{
// get object id of uno interface to be wrapped
rtl_uString * pOId = 0;
(*static_cast< pseudo_Mapping * >( pMapping )->pFrom->getObjectIdentifier)(
static_cast< pseudo_Mapping * >( pMapping )->pFrom, &pOId, pUnoI );
OSL_ASSERT( pOId );
if (pOId)
{
// try to get any known interface from target environment
(*static_cast< pseudo_Mapping * >( pMapping )->pTo->getRegisteredInterface)(
static_cast< pseudo_Mapping * >( pMapping )->pTo, ppOut, pOId, pTypeDescr );
if (! *ppOut) // no existing interface, register new proxy interface
{
// try to publish a new proxy (ref count initially 1)
void * pProxy = new pseudo_unoInterfaceProxy(
static_cast< pseudo_Mapping * >( pMapping ),
reinterpret_cast< uno_Interface * >( pUnoI ), pTypeDescr, pOId );
// proxy may be exchanged during registration
(*static_cast< pseudo_Mapping * >( pMapping )->pTo->registerProxyInterface)(
static_cast< pseudo_Mapping * >( pMapping )->pTo,
&pProxy, pseudo_unoInterfaceProxy_free, pOId, pTypeDescr );
*ppOut = pProxy;
}
rtl_uString_release( pOId );
}
}
}
static void SAL_CALL pseudo_Mapping_free( uno_Mapping * pMapping )
{
delete static_cast< pseudo_Mapping * >( pMapping );
}
static void SAL_CALL pseudo_Mapping_acquire( uno_Mapping * pMapping )
{
if (1 == osl_atomic_increment( & static_cast< pseudo_Mapping * >( pMapping )->nRef ))
{
OUString aMappingPurpose("pseudo");
uno_registerMapping( &pMapping,
pseudo_Mapping_free,
(uno_Environment *)((pseudo_Mapping *)pMapping)->pFrom,<--- C-style pointer casting [+]C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.
(uno_Environment *)((pseudo_Mapping *)pMapping)->pTo,<--- C-style pointer casting [+]C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.
aMappingPurpose.pData );
}
}
static void SAL_CALL pseudo_Mapping_release( uno_Mapping * pMapping )
{
if (! osl_atomic_decrement( & static_cast< pseudo_Mapping * >( pMapping )->nRef ))
{
uno_revokeMapping( pMapping );
}
}
pseudo_Mapping::pseudo_Mapping( uno_ExtEnvironment * pFrom_, uno_ExtEnvironment * pTo_ )
: nRef( 1 )
, pFrom( pFrom_ )
, pTo( pTo_ )
{
(*((uno_Environment *)pFrom)->acquire)( (uno_Environment *)pFrom );
(*((uno_Environment *)pTo)->acquire)( (uno_Environment *)pTo );
uno_Mapping::acquire = pseudo_Mapping_acquire;
uno_Mapping::release = pseudo_Mapping_release;
uno_Mapping::mapInterface = pseudo_Mapping_mapInterface;
}
pseudo_Mapping::~pseudo_Mapping()
{
(*((uno_Environment *)pTo)->release)( (uno_Environment *)pTo );
(*((uno_Environment *)pFrom)->release)( (uno_Environment *)pFrom );
}
}
extern "C" void SAL_CALL uno_initEnvironment( uno_Environment * pUnoEnv )
{
OSL_FAIL( "### no impl: unexpected call!" );
}
extern "C" void SAL_CALL uno_ext_getMapping(
uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo )
{
OSL_ASSERT( ppMapping && pFrom && pTo );
if (ppMapping && pFrom && pTo && pFrom->pExtEnv && pTo->pExtEnv)
{
uno_Mapping * pMapping = 0;
if (0 == rtl_ustr_ascii_compare( pFrom->pTypeName->buffer, UNO_LB_UNO ) &&
0 == rtl_ustr_ascii_compare( pTo->pTypeName->buffer, UNO_LB_UNO ))
{
OUString aMappingPurpose("pseudo");
// ref count is initially 1
pMapping = new pseudo_uno::pseudo_Mapping( pFrom->pExtEnv, pTo->pExtEnv );
uno_registerMapping( &pMapping, pseudo_uno::pseudo_Mapping_free,
(uno_Environment *)pFrom->pExtEnv,
(uno_Environment *)pTo->pExtEnv,
aMappingPurpose.pData );
}
if (*ppMapping)
(*(*ppMapping)->release)( *ppMapping );
*ppMapping = pMapping;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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