1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 #include <stdio.h>
25 #include <string.h>
26 #include <dlfcn.h>
27 #include <cxxabi.h>
28 #include <hash_map>
29
30 #include <rtl/strbuf.hxx>
31 #include <rtl/ustrbuf.hxx>
32 #include <osl/diagnose.h>
33 #include <osl/mutex.hxx>
34
35 #include <com/sun/star/uno/genfunc.hxx>
36 #include "com/sun/star/uno/RuntimeException.hpp"
37 #include <typelib/typedescription.hxx>
38 #include <uno/any2.h>
39
40 #include "share.hxx"
41
42 #ifdef TEST
43 #include "test/TestBridgeException.hpp"
44 #endif
45
46 using namespace ::std;
47 using namespace ::osl;
48 using namespace ::rtl;
49 using namespace ::com::sun::star::uno;
50 using namespace ::__cxxabiv1;
51
52 //==================================================================================================
53 //YD static handle to this dll, to allow rtti symbol lookup
54 static void* hmod;
55
56 //==================================================================================================
57 //YD required to run test programs, because exe cannot export symbols!
58 #ifdef TEST
59 using namespace ::test;
60
dymmy_TestBridgeException()61 void dymmy_TestBridgeException() throw( ::test::TestBridgeException)
62 {
63 throw TestBridgeException();
64 }
65 #endif
66
67 //==================================================================================================
68 namespace CPPU_CURRENT_NAMESPACE
69 {
70
dummy_can_throw_anything(char const *)71 void dummy_can_throw_anything( char const * )
72 {
73 }
74
75 //==================================================================================================
toUNOname(char const * p)76 static OUString toUNOname( char const * p ) SAL_THROW( () )
77 {
78 #if OSL_DEBUG_LEVEL > 1
79 char const * start = p;
80 #endif
81
82 // example: N3com3sun4star4lang24IllegalArgumentExceptionE
83
84 OUStringBuffer buf( 64 );
85 OSL_ASSERT( 'N' == *p );
86 ++p; // skip N
87
88 while ('E' != *p)
89 {
90 // read chars count
91 long n = (*p++ - '0');
92 while ('0' <= *p && '9' >= *p)
93 {
94 n *= 10;
95 n += (*p++ - '0');
96 }
97 buf.appendAscii( p, n );
98 p += n;
99 if ('E' != *p)
100 buf.append( (sal_Unicode)'.' );
101 }
102
103 #if OSL_DEBUG_LEVEL > 1
104 OUString ret( buf.makeStringAndClear() );
105 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
106 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
107 return ret;
108 #else
109 return buf.makeStringAndClear();
110 #endif
111 }
112
113 //==================================================================================================
114 class RTTI
115 {
116 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
117
118 Mutex m_mutex;
119 t_rtti_map m_rttis;
120 t_rtti_map m_generatedRttis;
121
122 //void * m_hApp;
123
124 public:
125 RTTI() SAL_THROW( () );
126 ~RTTI() SAL_THROW( () );
127
128 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
129 };
130 //__________________________________________________________________________________________________
RTTI()131 RTTI::RTTI() SAL_THROW( () )
132 // : m_hApp( dlopen( 0, RTLD_LAZY ) )
133 {
134 }
135 //__________________________________________________________________________________________________
~RTTI()136 RTTI::~RTTI() SAL_THROW( () )
137 {
138 // dlclose( m_hApp );
139 }
140
141 //__________________________________________________________________________________________________
getRTTI(typelib_CompoundTypeDescription * pTypeDescr)142 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
143 {
144 type_info * rtti = NULL;
145
146 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
147
148 MutexGuard guard( m_mutex );
149 t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
150 if (iFind == m_rttis.end())
151 {
152 // RTTI symbol
153 OStringBuffer buf( 64 );
154 buf.append( RTL_CONSTASCII_STRINGPARAM("__ZTIN") );
155 sal_Int32 index = 0;
156 do
157 {
158 OUString token( unoName.getToken( 0, '.', index ) );
159 buf.append( token.getLength() );
160 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
161 buf.append( c_token );
162 }
163 while (index >= 0);
164 buf.append( 'E' );
165
166 OString symName( buf.makeStringAndClear() );
167
168 // dll imports have been removed because this breaks the build (they are
169 // forward referenced) and also cygwin ignores this.
170
171 // try to lookup the symbol in the generated rtti map
172 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
173 if (iFind == m_generatedRttis.end())
174 {
175 // we must generate it !
176 // symbol and rtti-name is nearly identical,
177 // the symbol is prefixed with __ZTI
178 char const * rttiName = symName.getStr() +5;
179 #if OSL_DEBUG_LEVEL > 1
180 fprintf( stderr,"generated rtti for %s\n", rttiName );
181 #endif
182 if (pTypeDescr->pBaseTypeDescription)
183 {
184 // ensure availability of base
185 type_info * base_rtti = getRTTI(
186 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
187 rtti = new __si_class_type_info(
188 strdup( rttiName ), (__class_type_info *)base_rtti );
189 }
190 else
191 {
192 // this class has no base class
193 rtti = new __class_type_info( strdup( rttiName ) );
194 }
195
196 pair< t_rtti_map::iterator, bool > insertion(
197 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
198 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
199 }
200 else // taking already generated rtti
201 {
202 rtti = iFind->second;
203 }
204 }
205 else
206 {
207 rtti = iFind->second;
208 }
209
210 return rtti;
211 }
212
213 //--------------------------------------------------------------------------------------------------
deleteException(void * pExc)214 static void deleteException( void * pExc )
215 {
216 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
217 typelib_TypeDescription * pTD = 0;
218 OUString unoName( toUNOname( header->exceptionType->name() ) );
219 ::typelib_typedescription_getByName( &pTD, unoName.pData );
220 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
221 if (pTD)
222 {
223 ::uno_destructData( pExc, pTD, cpp_release );
224 ::typelib_typedescription_release( pTD );
225 }
226 }
227
228 //==================================================================================================
raiseException(uno_Any * pUnoExc,uno_Mapping * pUno2Cpp)229 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
230 {
231 #if OSL_DEBUG_LEVEL > 1
232 OString cstr(
233 OUStringToOString(
234 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
235 RTL_TEXTENCODING_ASCII_US ) );
236 fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
237 #endif
238 void * pCppExc;
239 type_info * rtti;
240
241 {
242 // construct cpp exception object
243 typelib_TypeDescription * pTypeDescr = 0;
244 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
245 OSL_ASSERT( pTypeDescr );
246 if (! pTypeDescr)
247 {
248 throw RuntimeException(
249 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
250 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
251 Reference< XInterface >() );
252 }
253
254 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
255 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
256
257 // destruct uno exception
258 ::uno_any_destruct( pUnoExc, 0 );
259 // avoiding locked counts
260 static RTTI * s_rtti = 0;
261 if (! s_rtti)
262 {
263 MutexGuard guard( Mutex::getGlobalMutex() );
264 if (! s_rtti)
265 {
266 #ifdef LEAK_STATIC_DATA
267 s_rtti = new RTTI();
268 #else
269 static RTTI rtti_data;
270 s_rtti = &rtti_data;
271 #endif
272 }
273 }
274 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
275 TYPELIB_DANGER_RELEASE( pTypeDescr );
276 OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
277 if (! rtti)
278 {
279 throw RuntimeException(
280 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
281 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
282 Reference< XInterface >() );
283 }
284 }
285
286 __cxa_throw( pCppExc, rtti, deleteException );
287 }
288
289 //==================================================================================================
fillUnoException(__cxa_exception * header,uno_Any * pUnoExc,uno_Mapping * pCpp2Uno)290 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
291 {
292 if (! header)
293 {
294 RuntimeException aRE(
295 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
296 Reference< XInterface >() );
297 Type const & rType = ::getCppuType( &aRE );
298 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
299 #if OSL_DEBUG_LEVEL > 0
300 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
301 OSL_ENSURE( 0, cstr.getStr() );
302 #endif
303 return;
304 }
305
306 typelib_TypeDescription * pExcTypeDescr = 0;
307 OUString unoName( toUNOname( header->exceptionType->name() ) );
308 #if OSL_DEBUG_LEVEL > 1
309 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
310 fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
311 #endif
312 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
313 if (0 == pExcTypeDescr)
314 {
315 RuntimeException aRE(
316 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
317 Reference< XInterface >() );
318 Type const & rType = ::getCppuType( &aRE );
319 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
320 #if OSL_DEBUG_LEVEL > 0
321 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
322 OSL_ENSURE( 0, cstr.getStr() );
323 #endif
324 }
325 else
326 {
327 // construct uno exception any
328 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
329 typelib_typedescription_release( pExcTypeDescr );
330 }
331 }
332
333 }
334
335