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 <exception>
23 #include <typeinfo>
24
25 #include <malloc.h>
26 #include <sal/alloca.h>
27
28 #include <com/sun/star/uno/genfunc.hxx>
29 #include <com/sun/star/uno/Exception.hpp>
30 #include "com/sun/star/uno/RuntimeException.hpp"
31 #include <o3tl/runtimetooustring.hxx>
32 #include <uno/data.h>
33
34 #include "bridge.hxx"
35 #include "types.hxx"
36 #include "unointerfaceproxy.hxx"
37 #include "vtables.hxx"
38
39 #include "share.hxx"
40
41 #include "callvirtualmethod.hxx"
42
43 using namespace ::com::sun::star::uno;
44
45 namespace
46 {
47
cpp_call(bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,bridges::cpp_uno::shared::VtableSlot aVtableSlot,typelib_TypeDescriptionReference * pReturnTypeRef,sal_Int32 nParams,typelib_MethodParameter * pParams,void * pUnoReturn,void * pUnoArgs[],uno_Any ** ppUnoExc)48 static void cpp_call(
49 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
50 bridges::cpp_uno::shared::VtableSlot aVtableSlot,
51 typelib_TypeDescriptionReference * pReturnTypeRef,
52 sal_Int32 nParams, typelib_MethodParameter * pParams,
53 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
54 {
55 // max space for: [complex ret ptr], values|ptr ...
56 char * pCppStack =
57 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
58 char * pCppStackStart = pCppStack;
59
60 // return
61 typelib_TypeDescription * pReturnTypeDescr = 0;
62 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
63 assert(pReturnTypeDescr);
64
65 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
66
67 if (pReturnTypeDescr)
68 {
69 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
70 {
71 pCppReturn = pUnoReturn; // direct way for simple types
72 }
73 else
74 {
75 // complex return via ptr
76 pCppReturn = *(void **)pCppStack
77 = (bridges::cpp_uno::shared::relatesToInterfaceType(
78 pReturnTypeDescr )
79 ? alloca( pReturnTypeDescr->nSize )
80 : pUnoReturn); // direct way
81 pCppStack += sizeof(void *);
82 }
83 }
84 // push this
85 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
86 + aVtableSlot.offset;
87 *(void**)pCppStack = pAdjustedThisPtr;
88 pCppStack += sizeof( void* );
89
90 // stack space
91 static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!");
92 // args
93 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
94 // indices of values this have to be converted (interface conversion cpp<=>uno)
95 sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams);
96 // type descriptions for reconversions
97 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
98
99 sal_Int32 nTempIndices = 0;
100
101 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
102 {
103 const typelib_MethodParameter & rParam = pParams[nPos];
104 typelib_TypeDescription * pParamTypeDescr = 0;
105 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
106
107 if (!rParam.bOut
108 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
109 {
110 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
111 pThis->getBridge()->getUno2Cpp() );
112
113 switch (pParamTypeDescr->eTypeClass)
114 {
115 case typelib_TypeClass_HYPER:
116 case typelib_TypeClass_UNSIGNED_HYPER:
117 case typelib_TypeClass_DOUBLE:
118 pCppStack += sizeof(sal_Int32); // extra long
119 }
120 // no longer needed
121 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
122 }
123 else // ptr to complex value | ref
124 {
125 if (! rParam.bIn) // is pure out
126 {
127 // cpp out is constructed mem, uno out is not!
128 uno_constructData(
129 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
130 pParamTypeDescr );
131 pTempIndices[nTempIndices] = nPos; // default constructed for cpp call
132 // will be released at reconversion
133 ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
134 }
135 // is in/inout
136 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
137 pParamTypeDescr ))
138 {
139 uno_copyAndConvertData(
140 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
141 pUnoArgs[nPos], pParamTypeDescr,
142 pThis->getBridge()->getUno2Cpp() );
143
144 pTempIndices[nTempIndices] = nPos; // has to be reconverted
145 // will be released at reconversion
146 ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
147 }
148 else // direct way
149 {
150 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
151 // no longer needed
152 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
153 }
154 }
155 pCppStack += sizeof(sal_Int32); // standard parameter length
156 }
157
158 try
159 {
160 assert( !( (pCppStack - pCppStackStart ) & 3) && "UNALIGNED STACK !!! (Please DO panic)");
161 try {
162 CPPU_CURRENT_NAMESPACE::callVirtualMethod(
163 pAdjustedThisPtr, aVtableSlot.index,
164 pCppReturn, pReturnTypeDescr->eTypeClass,
165 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
166 } catch (css::uno::Exception &) {
167 throw;
168 } catch (std::exception & e) {
169 throw css::uno::RuntimeException(
170 "C++ code threw " + o3tl::runtimeToOUString(typeid(e).name()) + ": "
171 + o3tl::runtimeToOUString(e.what()));
172 } catch (...) {
173 throw css::uno::RuntimeException("C++ code threw unknown exception");
174 }
175 // NO exception occurred...
176 *ppUnoExc = 0;
177
178 // reconvert temporary params
179 for ( ; nTempIndices--; )
180 {
181 sal_Int32 nIndex = pTempIndices[nTempIndices];
182 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices];
183
184 if (pParams[nIndex].bIn)
185 {
186 if (pParams[nIndex].bOut) // inout
187 {
188 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
189 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
190 pThis->getBridge()->getCpp2Uno() );
191 }
192 }
193 else // pure out
194 {
195 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
196 pThis->getBridge()->getCpp2Uno() );
197 }
198 // destroy temp cpp param => cpp: every param was constructed
199 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
200
201 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
202 }
203 // return value
204 if (pCppReturn && pUnoReturn != pCppReturn)
205 {
206 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
207 pThis->getBridge()->getCpp2Uno() );
208 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
209 }
210 }
211 catch (...)
212 {
213 // fill uno exception
214 CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno());
215
216 // temporary params
217 for ( ; nTempIndices--; )
218 {
219 sal_Int32 nIndex = pTempIndices[nTempIndices];
220 // destroy temp cpp param => cpp: every param was constructed
221 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices], cpp_release );
222 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
223 }
224 // return type
225 if (pReturnTypeDescr)
226 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
227 }
228 }
229
230 }
231
232 namespace bridges { namespace cpp_uno { namespace shared {
233
unoInterfaceProxyDispatch(uno_Interface * pUnoI,const typelib_TypeDescription * pMemberDescr,void * pReturn,void * pArgs[],uno_Any ** ppException)234 void unoInterfaceProxyDispatch(
235 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
236 void * pReturn, void * pArgs[], uno_Any ** ppException )
237 {
238 // is my surrogate
239 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
240 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
241 typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;
242
243 switch (pMemberDescr->eTypeClass)
244 {
245 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
246 {
247 VtableSlot aVtableSlot(
248 getVtableSlot(
249 reinterpret_cast<
250 typelib_InterfaceAttributeTypeDescription const * >(
251 pMemberDescr)));
252 if (pReturn)
253 {
254 // dependent dispatch
255 cpp_call(
256 pThis, aVtableSlot,
257 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
258 0, 0, // no params
259 pReturn, pArgs, ppException );
260 }
261 else
262 {
263 // is SET
264 typelib_MethodParameter aParam;
265 aParam.pTypeRef =
266 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
267 aParam.bIn = sal_True;
268 aParam.bOut = sal_False;
269
270 typelib_TypeDescriptionReference * pReturnTypeRef = 0;
271 OUString aVoidName("void");
272 typelib_typedescriptionreference_new(
273 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
274
275 // dependent dispatch
276 aVtableSlot.index += 1; // get, then set method
277 cpp_call(
278 pThis, aVtableSlot,
279 pReturnTypeRef,
280 1, &aParam,
281 pReturn, pArgs, ppException );
282
283 typelib_typedescriptionreference_release( pReturnTypeRef );
284 }
285
286 break;
287 }
288 case typelib_TypeClass_INTERFACE_METHOD:
289 {
290 VtableSlot aVtableSlot(
291 getVtableSlot(
292 reinterpret_cast<
293 typelib_InterfaceMethodTypeDescription const * >(
294 pMemberDescr)));
295 switch (aVtableSlot.index)
296 {
297 // standard calls
298 case 1: // acquire uno interface
299 (*pUnoI->acquire)( pUnoI );
300 *ppException = 0;
301 break;
302 case 2: // release uno interface
303 (*pUnoI->release)( pUnoI );
304 *ppException = 0;
305 break;
306 case 0: // queryInterface() opt
307 {
308 typelib_TypeDescription * pTD = 0;
309 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
310 if (pTD)
311 {
312 uno_Interface * pInterface = 0;
313 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
314 pThis->pBridge->getUnoEnv(),
315 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
316
317 if (pInterface)
318 {
319 ::uno_any_construct(
320 reinterpret_cast< uno_Any * >( pReturn ),
321 &pInterface, pTD, 0 );
322 (*pInterface->release)( pInterface );
323 TYPELIB_DANGER_RELEASE( pTD );
324 *ppException = 0;
325 break;
326 }
327 TYPELIB_DANGER_RELEASE( pTD );
328 }
329 } // else perform queryInterface()
330 default:
331 // dependent dispatch
332 cpp_call(
333 pThis, aVtableSlot,
334 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
335 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
336 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
337 pReturn, pArgs, ppException );
338 }
339 break;
340 }
341 default:
342 {
343 ::com::sun::star::uno::RuntimeException aExc(
344 "illegal member type description!",
345 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
346
347 Type const & rExcType = cppu::UnoType<decltype(aExc)>::get();
348 // binary identical null reference
349 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
350 }
351 }
352 }
353
354 } } }
355
356 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
357