Quelle  component.cxx   Sprache: C

/* -*- 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 <bridge.hxx>

#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/uno/XInterface.hpp>
#include <rtl/process.h>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.h>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
#include <sal/types.h>
#include <uno/environment.h>
#include <uno/lbnames.h>
#include <uno/mapping.h>
#include <cppu/EnvDcp.hxx>


namespace {

const OUString & cppu_cppenv_getStaticOIdPart()
{
    static OUString s_aStaticOidPart = []() {
        OUStringBuffer aRet(64);
        aRet.append("];");
        // good guid
        sal_uInt8 ar[16];
        ::rtl_getGlobalProcessId(ar);
        for (unsigned char i : ar)
        {
            aRet.append(static_cast<sal_Int32>(i), 16);
        }
        return aRet.makeStringAndClear();
    }();
    return s_aStaticOidPart;
}

}

extern "C" {

static void s_stub_computeObjectIdentifier(va_list * pParam)
{
    uno_ExtEnvironment  * pEnv       = va_arg(*pParam, uno_ExtEnvironment *);
    rtl_uString        ** ppOId      = va_arg(*pParam, rtl_uString **);
    void                * pInterface = va_arg(*pParam, void *);


    assert(pEnv && ppOId && pInterface);
    if (!(pEnv && ppOId && pInterface))
        return;

    if (*ppOId)
    {
        rtl_uString_release( *ppOId );
        *ppOId = nullptr;
    }

    try
    {
        ::com::sun::star::uno::Reference<
              ::com::sun::star::uno::XInterface > xHome(
                  static_cast< css::uno::XInterface * >(
                      pInterface ),
                  ::com::sun::star::uno::UNO_QUERY );
        assert(xHome.is() && "### query to XInterface failed!");
        if (xHome.is())
        {
            // interface
            OUString aRet =
                OUString::number( reinterpret_cast< sal_IntPtr >(xHome.get()), 16 ) +
                ";" +
                // ;environment[context]
                OUString::unacquired(&pEnv->aBase.pTypeName) +
                "[" +
                OUString::number( reinterpret_cast< sal_IntPtr >(pEnv->aBase.pContext), 16 ) +
                // ];good guid
                cppu_cppenv_getStaticOIdPart();
            *ppOId = aRet.pData;
            ::rtl_uString_acquire( *ppOId );
        }
    }
    catch (const css::uno::RuntimeException & e)
    {
        SAL_WARN("bridges",
            "### RuntimeException occurred during queryInterface(): "
            << e.Message);
    }
}

static void computeObjectIdentifier(
    uno_ExtEnvironment * pExtEnv, rtl_uString ** ppOId, void * pInterface )
{
    uno_Environment_invoke(&pExtEnv->aBase, s_stub_computeObjectIdentifier, pExtEnv, ppOId, pInterface);
}

static void s_stub_acquireInterface(va_list * pParam)
{
    /*uno_ExtEnvironment * pExtEnv = */va_arg(*pParam, uno_ExtEnvironment *);
    void               * pCppI   = va_arg(*pParam, void *);

    static_cast< css::uno::XInterface * >( pCppI )->acquire();
}

static void acquireInterface( uno_ExtEnvironment * pExtEnv, void * pCppI )
{
    uno_Environment_invoke(&pExtEnv->aBase, s_stub_acquireInterface, pExtEnv, pCppI);
}

static void s_stub_releaseInterface(va_list * pParam)
{
    /*uno_ExtEnvironment * pExtEnv = */va_arg(*pParam, uno_ExtEnvironment *);
    void               * pCppI   = va_arg(*pParam, void *);

    static_cast< css::uno::XInterface * >( pCppI )->release();
}

static void releaseInterface( uno_ExtEnvironment * pExtEnv, void * pCppI )
{
    uno_Environment_invoke(&pExtEnv->aBase, s_stub_releaseInterface, pExtEnv, pCppI);
}

static void environmentDisposing(
    SAL_UNUSED_PARAMETER uno_Environment * )
{
}

#ifdef DISABLE_DYNLOADING
#define uno_initEnvironment CPPU_ENV_uno_initEnvironment
#endif

SAL_DLLPUBLIC_EXPORT void uno_initEnvironment(uno_Environment * pCppEnv) noexcept
{
    assert(pCppEnv->pExtEnv);
    assert(
        ::rtl_ustr_ascii_compare_WithLength(
             pCppEnv->pTypeName->buffer, rtl_str_getLength(CPPU_CURRENT_LANGUAGE_BINDING_NAME), CPPU_CURRENT_LANGUAGE_BINDING_NAME )
        == 0
        && "### wrong environment type!");
    reinterpret_cast<uno_ExtEnvironment *>(pCppEnv)->computeObjectIdentifier
        = computeObjectIdentifier;
    reinterpret_cast<uno_ExtEnvironment *>(pCppEnv)->acquireInterface = acquireInterface;
    reinterpret_cast<uno_ExtEnvironment *>(pCppEnv)->releaseInterface = releaseInterface;
    pCppEnv->environmentDisposing = environmentDisposing;
}

#ifdef DISABLE_DYNLOADING
#define uno_ext_getMapping CPPU_ENV_uno_ext_getMapping
#endif

SAL_DLLPUBLIC_EXPORT void uno_ext_getMapping(
    uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo) noexcept
{
    assert(ppMapping && pFrom && pTo);
    if (!(ppMapping && pFrom && pTo && pFrom->pExtEnv && pTo->pExtEnv))
        return;

    uno_Mapping * pMapping = nullptr;

    OUString from_envTypeName(cppu::EnvDcp::getTypeName(pFrom->pTypeName));
    OUString to_envTypeName(cppu::EnvDcp::getTypeName(pTo->pTypeName));

    if (rtl_ustr_ascii_compare(
            from_envTypeName.pData->buffer,
            CPPU_CURRENT_LANGUAGE_BINDING_NAME ) == 0 &&
        rtl_ustr_ascii_compare(
            to_envTypeName.pData->buffer, UNO_LB_UNO ) == 0)
    {
        // ref count initially 1
        pMapping = bridges::cpp_uno::shared::Bridge::createMapping(
            pFrom->pExtEnv, pTo->pExtEnv, true );
        ::uno_registerMapping(
            &pMapping, bridges::cpp_uno::shared::freeMapping,
            &pFrom->pExtEnv->aBase,
            &pTo->pExtEnv->aBase, nullptr );
    }
    else if (rtl_ustr_ascii_compare(
                 to_envTypeName.pData->buffer,
                 CPPU_CURRENT_LANGUAGE_BINDING_NAME ) == 0 &&
             rtl_ustr_ascii_compare(
                 from_envTypeName.pData->buffer, UNO_LB_UNO ) == 0)
    {
        // ref count initially 1
        pMapping = bridges::cpp_uno::shared::Bridge::createMapping(
            pTo->pExtEnv, pFrom->pExtEnv, false );
        ::uno_registerMapping(
            &pMapping, bridges::cpp_uno::shared::freeMapping,
            &pFrom->pExtEnv->aBase,
            &pTo->pExtEnv->aBase, nullptr );
    }

    if (*ppMapping)
    {
        (*(*ppMapping)->release)( *ppMapping );
    }
    if (pMapping)
        *ppMapping = pMapping;
}

}

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