binaryurp/source/proxy.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <cassert>
  23 #include <exception>
  24 #include <vector>
  25
  26 #include <cppuhelper/exc_hlp.hxx>
  27 #include <o3tl/runtimetooustring.hxx>
  28 #include <rtl/ref.hxx>
  29 #include <rtl/ustring.hxx>
  30 #include <sal/types.h>
  31 #include <typelib/typedescription.h>
  32 #include <typelib/typedescription.hxx>
  33 #include <uno/any2.h>
  34 #include <uno/dispatcher.h>
  35 #include <uno/dispatcher.hxx>
  36
  37 #include "binaryany.hxx"
  38 #include "bridge.hxx"
  39 #include "proxy.hxx"
  40
  41 namespace binaryurp {
  42
  43 namespace {
  44
  45 extern "C" void proxy_acquireInterface(uno_Interface * pInterface) {
  46     assert(pInterface != nullptr);
  47     static_cast< Proxy * >(pInterface)->do_acquire();
  48 }
  49
  50 extern "C" void proxy_releaseInterface(uno_Interface * pInterface) {
  51     assert(pInterface != nullptr);
  52     static_cast< Proxy * >(pInterface)->do_release();
  53 }
  54
  55 extern "C" void proxy_dispatchInterface(
  56     uno_Interface * pUnoI, typelib_TypeDescription const * pMemberType,
  57     void * pReturn, void ** pArgs, uno_Any ** ppException)
  58 {
  59     assert(pUnoI != nullptr);
  60     static_cast< Proxy * >(pUnoI)->do_dispatch(
  61         pMemberType, pReturn, pArgs, ppException);
  62 }
  63
  64 }
  65
  66 Proxy::Proxy(
  67     rtl::Reference< Bridge > const & bridge, OUString const & oid,
  68     css::uno::TypeDescription const & type):
  69     bridge_(bridge), oid_(oid), type_(type), references_(1)
  70 {
  71     assert(bridge.is());
  72     acquire = &proxy_acquireInterface;
  73     release = &proxy_releaseInterface;
  74     pDispatcher = &proxy_dispatchInterface;
  75 }
  76
  77
  78 void Proxy::do_acquire() {
  79     if (++references_ == 1) {
  80         bridge_->resurrectProxy(*this);
  81     }
  82 }
  83
  84 void Proxy::do_release() {
  85     if (--references_ == 0) {
  86         bridge_->revokeProxy(*this);
  87     }
  88 }
  89
  90 void Proxy::do_free() {
  91     bridge_->freeProxy(*this);
  92     delete this;
  93 }
  94
  95 void Proxy::do_dispatch(
  96     typelib_TypeDescription const * member, void * returnValue,
  97     void ** arguments, uno_Any ** exception) const
  98 {
  99     try {
 100         try {
 101             do_dispatch_throw(member, returnValue, arguments, exception);
 102         } catch (const std::exception & e) {
 103             throw css::uno::RuntimeException(
 104                 "caught C++ exception: " + o3tl::runtimeToOUString(e.what()));
 105         }
 106     } catch (const css::uno::RuntimeException &) {
 107         css::uno::Any exc(cppu::getCaughtException());
 108         uno_copyAndConvertData(
 109             *exception, &exc,
 110             (css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get()).
 111              get()),
 112             bridge_->getCppToBinaryMapping().get());
 113     }
 114 }
 115
 116 bool Proxy::isProxy(
 117     rtl::Reference< Bridge > const & bridge,
 118     css::uno::UnoInterfaceReference const & object, OUString * oid)
 119 {
 120     assert(object.is());
 121     return object.m_pUnoI->acquire == &proxy_acquireInterface &&
 122         static_cast< Proxy * >(object.m_pUnoI)->isProxy(bridge, oid);
 123 }
 124
 125 Proxy::~Proxy() {}
 126
 127 void Proxy::do_dispatch_throw(
 128     typelib_TypeDescription const * member, void * returnValue,
 129     void ** arguments, uno_Any ** exception) const
 130 {
 131     //TODO: Optimize queryInterface:
 132     assert(member != nullptr);
 133     bool bSetter = false;
 134     std::vector< BinaryAny > inArgs;
 135     switch (member->eTypeClass) {
 136     case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 137         bSetter = returnValue == nullptr;
 138         if (bSetter) {
 139             inArgs.emplace_back(
 140                     css::uno::TypeDescription(
 141                         reinterpret_cast<
 142                             typelib_InterfaceAttributeTypeDescription const * >(
 143                                 member)->
 144                         pAttributeTypeRef),
 145                     arguments[0]);
 146         }
 147         break;
 148     case typelib_TypeClass_INTERFACE_METHOD:
 149         {
 150             typelib_InterfaceMethodTypeDescription const * mtd =
 151                 reinterpret_cast<
 152                     typelib_InterfaceMethodTypeDescription const * >(member);
 153             for (sal_Int32 i = 0; i != mtd->nParams; ++i) {
 154                 if (mtd->pParams[i].bIn) {
 155                     inArgs.emplace_back(
 156                             css::uno::TypeDescription(mtd->pParams[i].pTypeRef),
 157                             arguments[i]);
 158                 }
 159             }
 160             break;
 161         }
 162     default:
 163         assert(false); // this cannot happen
 164         break;
 165     }
 166     BinaryAny ret;
 167     std::vector< BinaryAny > outArgs;
 168     if (bridge_->makeCall(
 169             oid_,
 170             css::uno::TypeDescription(
 171                 const_cast< typelib_TypeDescription * >(member)),
 172             bSetter, inArgs, &ret, &outArgs))
 173     {
 174         assert(ret.getType().get()->eTypeClass == typelib_TypeClass_EXCEPTION);
 175         uno_any_construct(
 176             *exception, ret.getValue(ret.getType()), ret.getType().get(), nullptr);
 177     } else {
 178         switch (member->eTypeClass) {
 179         case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 180             if (!bSetter) {
 181                 css::uno::TypeDescription t(
 182                     reinterpret_cast<
 183                         typelib_InterfaceAttributeTypeDescription const * >(
 184                             member)->
 185                     pAttributeTypeRef);
 186                 uno_copyData(returnValue, ret.getValue(t), t.get(), nullptr);
 187             }
 188             break;
 189         case typelib_TypeClass_INTERFACE_METHOD:
 190             {
 191                 typelib_InterfaceMethodTypeDescription const * mtd =
 192                     reinterpret_cast<
 193                         typelib_InterfaceMethodTypeDescription const * >(
 194                             member);
 195                 css::uno::TypeDescription t(mtd->pReturnTypeRef);
 196                 if (t.get()->eTypeClass != typelib_TypeClass_VOID) {
 197                     uno_copyData(returnValue, ret.getValue(t), t.get(), nullptr);
 198                 }
 199                 std::vector< BinaryAny >::iterator i(outArgs.begin());
 200                 for (sal_Int32 j = 0; j != mtd->nParams; ++j) {
 201                     if (mtd->pParams[j].bOut) {
 202                         css::uno::TypeDescription pt(mtd->pParams[j].pTypeRef);
 203                         if (mtd->pParams[j].bIn) {
 204                             (void) uno_assignData(
 205                                 arguments[j], pt.get(), i++->getValue(pt),
 206                                 pt.get(), nullptr, nullptr, nullptr);
 207                         } else {
 208                             uno_copyData(
 209                                 arguments[j], i++->getValue(pt), pt.get(), nullptr);
 210                         }
 211                     }
 212                 }
 213                 assert(i == outArgs.end());
 214                 break;
 215             }
 216         default:
 217             assert(false); // this cannot happen
 218             break;
 219         }
 220         *exception = nullptr;
 221     }
 222 }
 223
 224 bool Proxy::isProxy(
 225     rtl::Reference< Bridge > const & bridge, OUString * oid) const
 226 {
 227     assert(oid != nullptr);
 228     if (bridge == bridge_) {
 229         *oid = oid_;
 230         return true;
 231     } else {
 232         return false;
 233     }
 234 }
 235
 236 }
 237
 238 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */