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 61 void dymmy_TestBridgeException() throw( ::test::TestBridgeException) 62 { 63 throw TestBridgeException(); 64 } 65 #endif 66 67 //================================================================================================== 68 namespace CPPU_CURRENT_NAMESPACE 69 { 70 71 void dummy_can_throw_anything( char const * ) 72 { 73 } 74 75 //================================================================================================== 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 //__________________________________________________________________________________________________ 131 RTTI::RTTI() SAL_THROW( () ) 132 // : m_hApp( dlopen( 0, RTLD_LAZY ) ) 133 { 134 } 135 //__________________________________________________________________________________________________ 136 RTTI::~RTTI() SAL_THROW( () ) 137 { 138 // dlclose( m_hApp ); 139 } 140 141 //__________________________________________________________________________________________________ 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 //-------------------------------------------------------------------------------------------------- 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 //================================================================================================== 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 //================================================================================================== 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