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 <dlfcn.h> 26 #include <cxxabi.h> 27 #include <hash_map> 28 29 #include <rtl/strbuf.hxx> 30 #include <rtl/ustrbuf.hxx> 31 #include <osl/diagnose.h> 32 #include <osl/mutex.hxx> 33 34 #include <com/sun/star/uno/genfunc.hxx> 35 #include "com/sun/star/uno/RuntimeException.hpp" 36 #include <typelib/typedescription.hxx> 37 #include <uno/any2.h> 38 39 #include "share.hxx" 40 41 #ifdef TEST 42 #include "test/TestBridgeException.hpp" 43 #endif 44 45 using namespace ::std; 46 using namespace ::osl; 47 using namespace ::rtl; 48 using namespace ::com::sun::star::uno; 49 using namespace ::__cxxabiv1; 50 51 //================================================================================================== 52 //YD static handle to this dll, to allow rtti symbol lookup 53 static void* hmod; 54 55 //================================================================================================== 56 //YD required to run test programs, because exe cannot export symbols! 57 #ifdef TEST 58 using namespace ::test; 59 60 void dymmy_TestBridgeException() throw( ::test::TestBridgeException) 61 { 62 throw TestBridgeException(); 63 } 64 #endif 65 66 //================================================================================================== 67 namespace CPPU_CURRENT_NAMESPACE 68 { 69 70 void dummy_can_throw_anything( char const * ) 71 { 72 } 73 74 //================================================================================================== 75 static OUString toUNOname( char const * p ) SAL_THROW( () ) 76 { 77 #if OSL_DEBUG_LEVEL > 1 78 char const * start = p; 79 #endif 80 81 // example: N3com3sun4star4lang24IllegalArgumentExceptionE 82 83 OUStringBuffer buf( 64 ); 84 OSL_ASSERT( 'N' == *p ); 85 ++p; // skip N 86 87 while ('E' != *p) 88 { 89 // read chars count 90 long n = (*p++ - '0'); 91 while ('0' <= *p && '9' >= *p) 92 { 93 n *= 10; 94 n += (*p++ - '0'); 95 } 96 buf.appendAscii( p, n ); 97 p += n; 98 if ('E' != *p) 99 buf.append( (sal_Unicode)'.' ); 100 } 101 102 #if OSL_DEBUG_LEVEL > 1 103 OUString ret( buf.makeStringAndClear() ); 104 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) ); 105 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() ); 106 return ret; 107 #else 108 return buf.makeStringAndClear(); 109 #endif 110 } 111 112 //================================================================================================== 113 class RTTI 114 { 115 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map; 116 117 Mutex m_mutex; 118 t_rtti_map m_rttis; 119 t_rtti_map m_generatedRttis; 120 121 //void * m_hApp; 122 123 public: 124 RTTI() SAL_THROW( () ); 125 ~RTTI() SAL_THROW( () ); 126 127 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () ); 128 }; 129 //__________________________________________________________________________________________________ 130 RTTI::RTTI() SAL_THROW( () ) 131 // : m_hApp( dlopen( 0, RTLD_LAZY ) ) 132 { 133 } 134 //__________________________________________________________________________________________________ 135 RTTI::~RTTI() SAL_THROW( () ) 136 { 137 // dlclose( m_hApp ); 138 } 139 140 //__________________________________________________________________________________________________ 141 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () ) 142 { 143 type_info * rtti = NULL; 144 145 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName; 146 147 MutexGuard guard( m_mutex ); 148 t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) ); 149 if (iFind == m_rttis.end()) 150 { 151 // RTTI symbol 152 OStringBuffer buf( 64 ); 153 buf.append( RTL_CONSTASCII_STRINGPARAM("__ZTIN") ); 154 sal_Int32 index = 0; 155 do 156 { 157 OUString token( unoName.getToken( 0, '.', index ) ); 158 buf.append( token.getLength() ); 159 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); 160 buf.append( c_token ); 161 } 162 while (index >= 0); 163 buf.append( 'E' ); 164 165 OString symName( buf.makeStringAndClear() ); 166 //rtti = (type_info *)dlsym( m_hApp, symName.getStr() ); 167 if (hmod == NULL) 168 hmod = dlopen( "gcc3_uno.dll", 0); 169 170 if (hmod) 171 rtti = (type_info *)dlsym( hmod, symName.getStr() ); 172 173 if (rtti) 174 { 175 pair< t_rtti_map::iterator, bool > insertion( 176 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 177 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" ); 178 } 179 else 180 { 181 // try to lookup the symbol in the generated rtti map 182 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) ); 183 if (iFind == m_generatedRttis.end()) 184 { 185 // we must generate it ! 186 // symbol and rtti-name is nearly identical, 187 // the symbol is prefixed with __ZTI 188 char const * rttiName = symName.getStr() +5; 189 #if OSL_DEBUG_LEVEL > 1 190 fprintf( stderr,"generated rtti for %s\n", rttiName ); 191 #endif 192 if (pTypeDescr->pBaseTypeDescription) 193 { 194 // ensure availability of base 195 type_info * base_rtti = getRTTI( 196 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription ); 197 rtti = new __si_class_type_info( 198 strdup( rttiName ), (__class_type_info *)base_rtti ); 199 } 200 else 201 { 202 // this class has no base class 203 rtti = new __class_type_info( strdup( rttiName ) ); 204 } 205 206 pair< t_rtti_map::iterator, bool > insertion( 207 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 208 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" ); 209 } 210 else // taking already generated rtti 211 { 212 rtti = iFind->second; 213 } 214 } 215 } 216 else 217 { 218 rtti = iFind->second; 219 } 220 221 return rtti; 222 } 223 224 //-------------------------------------------------------------------------------------------------- 225 static void deleteException( void * pExc ) 226 { 227 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1); 228 typelib_TypeDescription * pTD = 0; 229 OUString unoName( toUNOname( header->exceptionType->name() ) ); 230 ::typelib_typedescription_getByName( &pTD, unoName.pData ); 231 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" ); 232 if (pTD) 233 { 234 ::uno_destructData( pExc, pTD, cpp_release ); 235 ::typelib_typedescription_release( pTD ); 236 } 237 } 238 239 //================================================================================================== 240 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) 241 { 242 #if OSL_DEBUG_LEVEL > 1 243 OString cstr( 244 OUStringToOString( 245 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 246 RTL_TEXTENCODING_ASCII_US ) ); 247 fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() ); 248 #endif 249 void * pCppExc; 250 type_info * rtti; 251 252 { 253 // construct cpp exception object 254 typelib_TypeDescription * pTypeDescr = 0; 255 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); 256 OSL_ASSERT( pTypeDescr ); 257 if (! pTypeDescr) 258 { 259 throw RuntimeException( 260 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) + 261 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 262 Reference< XInterface >() ); 263 } 264 265 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize ); 266 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); 267 268 // destruct uno exception 269 ::uno_any_destruct( pUnoExc, 0 ); 270 // avoiding locked counts 271 static RTTI * s_rtti = 0; 272 if (! s_rtti) 273 { 274 MutexGuard guard( Mutex::getGlobalMutex() ); 275 if (! s_rtti) 276 { 277 #ifdef LEAK_STATIC_DATA 278 s_rtti = new RTTI(); 279 #else 280 static RTTI rtti_data; 281 s_rtti = &rtti_data; 282 #endif 283 } 284 } 285 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr ); 286 TYPELIB_DANGER_RELEASE( pTypeDescr ); 287 OSL_ENSURE( rtti, "### no rtti for throwing exception!" ); 288 if (! rtti) 289 { 290 throw RuntimeException( 291 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) + 292 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ), 293 Reference< XInterface >() ); 294 } 295 } 296 297 __cxa_throw( pCppExc, rtti, deleteException ); 298 } 299 300 //================================================================================================== 301 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno ) 302 { 303 if (! header) 304 { 305 RuntimeException aRE( 306 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ), 307 Reference< XInterface >() ); 308 Type const & rType = ::getCppuType( &aRE ); 309 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 310 #if OSL_DEBUG_LEVEL > 0 311 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 312 OSL_ENSURE( 0, cstr.getStr() ); 313 #endif 314 return; 315 } 316 317 typelib_TypeDescription * pExcTypeDescr = 0; 318 OUString unoName( toUNOname( header->exceptionType->name() ) ); 319 #if OSL_DEBUG_LEVEL > 1 320 OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) ); 321 fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() ); 322 #endif 323 typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); 324 if (0 == pExcTypeDescr) 325 { 326 RuntimeException aRE( 327 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName, 328 Reference< XInterface >() ); 329 Type const & rType = ::getCppuType( &aRE ); 330 uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); 331 #if OSL_DEBUG_LEVEL > 0 332 OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) ); 333 OSL_ENSURE( 0, cstr.getStr() ); 334 #endif 335 } 336 else 337 { 338 // construct uno exception any 339 uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); 340 typelib_typedescription_release( pExcTypeDescr ); 341 } 342 } 343 344 } 345 346