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-rw-r--r--cppu/source/helper/purpenv/helper_purpenv_Proxy.cxx503
1 files changed, 503 insertions, 0 deletions
diff --git a/cppu/source/helper/purpenv/helper_purpenv_Proxy.cxx b/cppu/source/helper/purpenv/helper_purpenv_Proxy.cxx
new file mode 100644
index 000000000..f62241fe1
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+++ b/cppu/source/helper/purpenv/helper_purpenv_Proxy.cxx
@@ -0,0 +1,503 @@
+/* -*- 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 "Proxy.hxx"
+
+#include <sal/log.hxx>
+#include <uno/dispatcher.h>
+#include <typelib/typedescription.hxx>
+
+using namespace com::sun::star;
+
+static bool relatesToInterface(typelib_TypeDescription * pTypeDescr)
+{
+ switch (pTypeDescr->eTypeClass)
+ {
+// case typelib_TypeClass_TYPEDEF:
+ case typelib_TypeClass_SEQUENCE:
+ {
+ switch (reinterpret_cast<typelib_IndirectTypeDescription *>(pTypeDescr)->pType->eTypeClass)
+ {
+ case typelib_TypeClass_INTERFACE:
+ case typelib_TypeClass_ANY: // might relate to interface
+ return true;
+ case typelib_TypeClass_SEQUENCE:
+ case typelib_TypeClass_STRUCT:
+ case typelib_TypeClass_EXCEPTION:
+ {
+ typelib_TypeDescription * pTD = nullptr;
+ TYPELIB_DANGER_GET( &pTD, reinterpret_cast<typelib_IndirectTypeDescription *>(pTypeDescr)->pType );
+ bool bRel = relatesToInterface( pTD );
+ TYPELIB_DANGER_RELEASE( pTD );
+ return bRel;
+ }
+ default:
+ ;
+ }
+ return false;
+ }
+ case typelib_TypeClass_STRUCT:
+ case typelib_TypeClass_EXCEPTION:
+ {
+ // ...optimized... to avoid getDescription() calls!
+ typelib_CompoundTypeDescription * pComp = reinterpret_cast<typelib_CompoundTypeDescription *>(pTypeDescr);
+ typelib_TypeDescriptionReference ** pTypes = pComp->ppTypeRefs;
+ for ( sal_Int32 nPos = pComp->nMembers; nPos--; )
+ {
+ switch (pTypes[nPos]->eTypeClass)
+ {
+ case typelib_TypeClass_INTERFACE:
+ case typelib_TypeClass_ANY: // might relate to interface
+ return true;
+// case typelib_TypeClass_TYPEDEF:
+ case typelib_TypeClass_SEQUENCE:
+ case typelib_TypeClass_STRUCT:
+ case typelib_TypeClass_EXCEPTION:
+ {
+ typelib_TypeDescription * pTD = nullptr;
+ TYPELIB_DANGER_GET( &pTD, pTypes[nPos] );
+ bool bRel = relatesToInterface( pTD );
+ TYPELIB_DANGER_RELEASE( pTD );
+ if (bRel)
+ return true;
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ if (pComp->pBaseTypeDescription)
+ return relatesToInterface( &pComp->pBaseTypeDescription->aBase );
+ break;
+ }
+ case typelib_TypeClass_ANY: // might relate to interface
+ case typelib_TypeClass_INTERFACE:
+ return true;
+
+ default:
+ ;
+ }
+ return false;
+}
+
+extern "C" { static void s_Proxy_dispatch(
+ uno_Interface * pUnoI,
+ typelib_TypeDescription const * pMemberType,
+ void * pReturn,
+ void * pArgs[],
+ uno_Any ** ppException)
+ SAL_THROW_EXTERN_C()
+{
+ Proxy * pThis = static_cast<Proxy *>(pUnoI);
+
+ typelib_MethodParameter param;
+ sal_Int32 nParams = 0;
+ typelib_MethodParameter * pParams = nullptr;
+ typelib_TypeDescriptionReference * pReturnTypeRef = nullptr;
+ // sal_Int32 nOutParams = 0;
+
+ switch (pMemberType->eTypeClass)
+ {
+ case typelib_TypeClass_INTERFACE_ATTRIBUTE:
+ if (pReturn)
+ {
+ pReturnTypeRef =
+ reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(
+ pMemberType)->pAttributeTypeRef;
+ nParams = 0;
+ pParams = nullptr;
+ }
+ else
+ {
+ param.pTypeRef = reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(
+ pMemberType)->pAttributeTypeRef;
+ param.bIn = true;
+ param.bOut = false;
+ nParams = 1;
+ pParams = &param;
+ }
+ break;
+ case typelib_TypeClass_INTERFACE_METHOD:
+ {
+ typelib_InterfaceMethodTypeDescription const * method_td =
+ reinterpret_cast<typelib_InterfaceMethodTypeDescription const *>(pMemberType);
+ pReturnTypeRef = method_td->pReturnTypeRef;
+ nParams = method_td->nParams;
+ pParams = method_td->pParams;
+ break;
+ }
+ default:
+ OSL_FAIL( "### illegal member typeclass!" );
+ abort();
+ }
+
+ pThis->dispatch( pReturnTypeRef,
+ pParams,
+ nParams,
+ pMemberType,
+ pReturn,
+ pArgs,
+ ppException );
+}}
+
+extern "C" void Proxy_free(SAL_UNUSED_PARAMETER uno_ExtEnvironment * /*pEnv*/, void * pProxy) SAL_THROW_EXTERN_C()
+{
+ Proxy * pThis = static_cast<Proxy * >(static_cast<uno_Interface *>(pProxy));
+ delete pThis;
+}
+
+extern "C" {
+static void s_Proxy_acquire(uno_Interface * pUnoI) SAL_THROW_EXTERN_C()
+{
+ Proxy * pProxy = static_cast<Proxy *>(pUnoI);
+ pProxy->acquire();
+}
+
+static void s_Proxy_release(uno_Interface * pUnoI) SAL_THROW_EXTERN_C()
+{
+ Proxy * pProxy = static_cast<Proxy *>(pUnoI);
+ pProxy->release();
+}
+
+static void s_acquireAndRegister_v(va_list * pParam)
+{
+ uno_Interface * pUnoI = va_arg(*pParam, uno_Interface *);
+ rtl_uString * pOid = va_arg(*pParam, rtl_uString *);
+ typelib_InterfaceTypeDescription * pTypeDescr = va_arg(*pParam, typelib_InterfaceTypeDescription *);
+ uno_ExtEnvironment * pEnv = va_arg(*pParam, uno_ExtEnvironment *);
+
+ pUnoI->acquire(pUnoI);
+ pEnv->registerInterface(pEnv, reinterpret_cast<void **>(&pUnoI), pOid, pTypeDescr);
+}
+}
+
+Proxy::Proxy(uno::Mapping const & to_from,
+ uno_Environment * pTo,
+ uno_Environment * pFrom,
+ uno_Interface * pUnoI,
+ typelib_InterfaceTypeDescription * pTypeDescr,
+ OUString const & rOId,
+ cppu::helper::purpenv::ProbeFun * probeFun,
+ void * pProbeContext
+)
+ : m_nRef (1),
+ m_from (pFrom),
+ m_to (pTo),
+ m_from_to (pFrom, pTo),
+ m_to_from (to_from),
+ m_pUnoI (pUnoI),
+ m_pTypeDescr (pTypeDescr),
+ m_aOId (rOId),
+ m_probeFun (probeFun),
+ m_pProbeContext(pProbeContext)
+{
+ SAL_INFO("cppu.purpenv", "LIFE: Proxy::Proxy(<>) -> " << this);
+
+ typelib_typedescription_acquire(&m_pTypeDescr->aBase);
+ if (!m_pTypeDescr->aBase.bComplete)
+ typelib_typedescription_complete(reinterpret_cast<typelib_TypeDescription **>(&m_pTypeDescr));
+
+ OSL_ENSURE(m_pTypeDescr->aBase.bComplete, "### type is incomplete!");
+
+ uno_Environment_invoke(m_to.get(), s_acquireAndRegister_v, m_pUnoI, rOId.pData, pTypeDescr, m_to.get());
+
+ // uno_Interface
+ uno_Interface::acquire = s_Proxy_acquire;
+ uno_Interface::release = s_Proxy_release;
+ uno_Interface::pDispatcher = s_Proxy_dispatch;
+}
+
+extern "C" { static void s_releaseAndRevoke_v(va_list * pParam)
+{
+ uno_ExtEnvironment * pEnv = va_arg(*pParam, uno_ExtEnvironment *);
+ uno_Interface * pUnoI = va_arg(*pParam, uno_Interface *);
+
+ pEnv->revokeInterface(pEnv, pUnoI);
+ pUnoI->release(pUnoI);
+}}
+
+Proxy::~Proxy()
+{
+ SAL_INFO("cppu.purpenv", "LIFE: Proxy::~Proxy() -> " << this);
+
+ uno_Environment_invoke(m_to.get(), s_releaseAndRevoke_v, m_to.get(), m_pUnoI);
+
+ typelib_typedescription_release(&m_pTypeDescr->aBase);
+}
+
+static uno::TypeDescription getAcquireMethod()
+{
+ typelib_TypeDescriptionReference * type_XInterface =
+ * typelib_static_type_getByTypeClass(typelib_TypeClass_INTERFACE);
+
+ typelib_TypeDescription * pTXInterfaceDescr = nullptr;
+ TYPELIB_DANGER_GET (&pTXInterfaceDescr, type_XInterface);
+ uno::TypeDescription acquire(
+ reinterpret_cast< typelib_InterfaceTypeDescription * >(
+ pTXInterfaceDescr)->ppAllMembers[1]);
+ TYPELIB_DANGER_RELEASE(pTXInterfaceDescr);
+
+ return acquire;
+}
+
+static uno::TypeDescription getReleaseMethod()
+{
+ typelib_TypeDescriptionReference * type_XInterface =
+ * typelib_static_type_getByTypeClass(typelib_TypeClass_INTERFACE);
+
+ typelib_TypeDescription * pTXInterfaceDescr = nullptr;
+ TYPELIB_DANGER_GET (&pTXInterfaceDescr, type_XInterface);
+ uno::TypeDescription release(
+ reinterpret_cast< typelib_InterfaceTypeDescription * >(
+ pTXInterfaceDescr)->ppAllMembers[2]);
+ TYPELIB_DANGER_RELEASE(pTXInterfaceDescr);
+
+ return release;
+}
+
+static uno::TypeDescription s_acquireMethod(getAcquireMethod());
+static uno::TypeDescription s_releaseMethod(getReleaseMethod());
+
+void Proxy::acquire()
+{
+ if (m_probeFun)
+ m_probeFun(true,
+ this,
+ m_pProbeContext,
+ *typelib_static_type_getByTypeClass(typelib_TypeClass_VOID),
+ nullptr,
+ 0,
+ s_acquireMethod.get(),
+ nullptr,
+ nullptr,
+ nullptr);
+
+ if (osl_atomic_increment(&m_nRef) == 1)
+ {
+ // rebirth of proxy zombie
+ void * pThis = this;
+ m_from.get()->pExtEnv->registerProxyInterface(m_from.get()->pExtEnv,
+ &pThis,
+ Proxy_free,
+ m_aOId.pData,
+ m_pTypeDescr);
+ OSL_ASSERT(pThis == this);
+ }
+
+ if (m_probeFun)
+ m_probeFun(false,
+ this,
+ m_pProbeContext,
+ *typelib_static_type_getByTypeClass(typelib_TypeClass_VOID),
+ nullptr,
+ 0,
+ s_acquireMethod.get(),
+ nullptr,
+ nullptr,
+ nullptr);
+
+}
+
+void Proxy::release()
+{
+ cppu::helper::purpenv::ProbeFun * probeFun = m_probeFun;
+ void * pProbeContext = m_pProbeContext;
+
+ if (m_probeFun)
+ m_probeFun(true,
+ this,
+ m_pProbeContext,
+ *typelib_static_type_getByTypeClass(typelib_TypeClass_VOID),
+ nullptr,
+ 0,
+ s_releaseMethod.get(),
+ nullptr,
+ nullptr,
+ nullptr);
+
+ if (osl_atomic_decrement(&m_nRef) == 0)
+ m_from.get()->pExtEnv->revokeInterface(m_from.get()->pExtEnv, this);
+
+ if (probeFun)
+ probeFun(false,
+ this,
+ pProbeContext,
+ *typelib_static_type_getByTypeClass(typelib_TypeClass_VOID),
+ nullptr,
+ 0,
+ s_releaseMethod.get(),
+ nullptr,
+ nullptr,
+ nullptr);
+
+}
+
+
+extern "C" {
+static void s_type_destructData_v(va_list * pParam)
+{
+ void * ret = va_arg(*pParam, void *);
+ typelib_TypeDescriptionReference * pReturnTypeRef = va_arg(*pParam, typelib_TypeDescriptionReference *);
+
+ uno_type_destructData(ret, pReturnTypeRef, nullptr);
+}
+
+static void s_dispatcher_v(va_list * pParam)
+{
+ uno_Interface * pUnoI = va_arg(*pParam, uno_Interface *);
+ typelib_TypeDescription const * pMemberType = va_arg(*pParam, typelib_TypeDescription const *);
+ void * pReturn = va_arg(*pParam, void *);
+ void ** pArgs = va_arg(*pParam, void **);
+ uno_Any ** ppException = va_arg(*pParam, uno_Any **);
+
+ pUnoI->pDispatcher(pUnoI, pMemberType, pReturn, pArgs, ppException);
+}
+}
+
+void Proxy::dispatch(typelib_TypeDescriptionReference * pReturnTypeRef,
+ typelib_MethodParameter * pParams,
+ sal_Int32 nParams,
+ typelib_TypeDescription const * pMemberType,
+ void * pReturn,
+ void * pArgs[],
+ uno_Any ** ppException)
+{
+ if (m_probeFun)
+ m_probeFun(true,
+ this,
+ m_pProbeContext,
+ pReturnTypeRef,
+ pParams,
+ nParams,
+ pMemberType,
+ pReturn,
+ pArgs,
+ ppException);
+
+ void ** args = static_cast<void **>(alloca( sizeof (void *) * nParams ));
+
+ typelib_TypeDescription * return_td = nullptr;
+ void * ret = pReturn;
+ if (pReturnTypeRef)
+ {
+ TYPELIB_DANGER_GET(&return_td, pReturnTypeRef);
+
+ if (relatesToInterface(return_td))
+ ret = alloca(return_td->nSize);
+
+ TYPELIB_DANGER_RELEASE(return_td);
+ }
+
+ for (sal_Int32 nPos = 0; nPos < nParams; ++ nPos)
+ {
+ typelib_MethodParameter const & param = pParams[nPos];
+ typelib_TypeDescription * td = nullptr;
+ TYPELIB_DANGER_GET( &td, param.pTypeRef );
+ if (relatesToInterface(td))
+ {
+ args[nPos] = alloca(td->nSize);
+ if (param.bIn)
+ {
+ uno_copyAndConvertData(args[nPos], pArgs[nPos], td, m_from_to.get());
+ }
+ }
+ else
+ {
+ args[nPos] = pArgs[nPos];
+ }
+ TYPELIB_DANGER_RELEASE( td );
+ }
+
+ uno_Any exc_data;
+ uno_Any * exc = &exc_data;
+
+ // do the UNO call...
+ uno_Environment_invoke(m_to.get(), s_dispatcher_v, m_pUnoI, pMemberType, ret, args, &exc);
+
+ if (exc == nullptr)
+ {
+ for (sal_Int32 nPos = 0; nPos < nParams; ++ nPos)
+ {
+ if (args[nPos] != pArgs[nPos])
+ {
+ typelib_MethodParameter const & param = pParams[nPos];
+ if (param.bOut)
+ {
+ if (param.bIn) // is inout
+ {
+ uno_type_destructData(pArgs[nPos], param.pTypeRef, nullptr);
+ }
+ uno_type_copyAndConvertData(pArgs[ nPos ],
+ args[ nPos ],
+ param.pTypeRef,
+ m_to_from.get());
+ }
+ uno_Environment_invoke(m_to.get(), s_type_destructData_v, args[nPos], param.pTypeRef, 0);
+ }
+ }
+ if (ret != pReturn)
+ {
+ uno_type_copyAndConvertData(pReturn,
+ ret,
+ pReturnTypeRef,
+ m_to_from.get());
+
+ uno_Environment_invoke(m_to.get(), s_type_destructData_v, ret, pReturnTypeRef, 0);
+ }
+
+ *ppException = nullptr;
+ }
+ else // exception occurred
+ {
+ for (sal_Int32 nPos = 0; nPos < nParams; ++ nPos)
+ {
+ if (args[nPos] != pArgs[nPos])
+ {
+ typelib_MethodParameter const & param = pParams[nPos];
+ if (param.bIn)
+ {
+ uno_Environment_invoke(m_to.get(), s_type_destructData_v, args[nPos], param.pTypeRef, 0);
+ }
+ }
+ }
+
+ uno_type_any_constructAndConvert(*ppException,
+ exc->pData,
+ exc->pType,
+ m_to_from.get());
+
+ // FIXME: need to destruct in m_to
+ uno_any_destruct(exc, nullptr);
+ }
+
+ if (m_probeFun)
+ m_probeFun(false,
+ this,
+ m_pProbeContext,
+ pReturnTypeRef,
+ pParams,
+ nParams,
+ pMemberType,
+ pReturn,
+ pArgs,
+ ppException);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */