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14  * software distributed under the License is distributed on an
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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_bridges.hxx"
26 
27 #if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6))
28 #include <exception>
29 #endif
30 
31 #include <stdio.h>
32 #include <string.h>
33 #include <dlfcn.h>
34 #include <cxxabi.h>
35 #include <hash_map>
36 #include <sys/param.h>
37 
38 #include <rtl/strbuf.hxx>
39 #include <rtl/ustrbuf.hxx>
40 #include <osl/diagnose.h>
41 #include <osl/mutex.hxx>
42 
43 #include <com/sun/star/uno/genfunc.hxx>
44 #include "com/sun/star/uno/RuntimeException.hpp"
45 #include <typelib/typedescription.hxx>
46 #include <uno/any2.h>
47 
48 #include "share.hxx"
49 
50 
51 using namespace ::std;
52 using namespace ::osl;
53 using namespace ::rtl;
54 using namespace ::com::sun::star::uno;
55 using namespace ::__cxxabiv1;
56 
57 
58 namespace CPPU_CURRENT_NAMESPACE
59 {
60 
61 void dummy_can_throw_anything( char const * )
62 {
63 }
64 
65 //==================================================================================================
66 static OUString toUNOname( char const * p ) SAL_THROW( () )
67 {
68 #if OSL_DEBUG_LEVEL > 1
69     char const * start = p;
70 #endif
71 
72     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
73 
74 	OUStringBuffer buf( 64 );
75     OSL_ASSERT( 'N' == *p );
76     ++p; // skip N
77 
78     while ('E' != *p)
79     {
80         // read chars count
81         long n = (*p++ - '0');
82         while ('0' <= *p && '9' >= *p)
83         {
84             n *= 10;
85             n += (*p++ - '0');
86         }
87         buf.appendAscii( p, n );
88         p += n;
89         if ('E' != *p)
90             buf.append( (sal_Unicode)'.' );
91     }
92 
93 #if OSL_DEBUG_LEVEL > 1
94     OUString ret( buf.makeStringAndClear() );
95     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
96     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
97     return ret;
98 #else
99     return buf.makeStringAndClear();
100 #endif
101 }
102 
103 //==================================================================================================
104 class RTTI
105 {
106     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
107 
108     Mutex m_mutex;
109 	t_rtti_map m_rttis;
110     t_rtti_map m_generatedRttis;
111 
112     void * m_hApp;
113 
114 public:
115     RTTI() SAL_THROW( () );
116     ~RTTI() SAL_THROW( () );
117 
118     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
119 };
120 
121 //__________________________________________________________________________________________________
122 RTTI::RTTI() SAL_THROW( () )
123     : m_hApp( dlopen( 0, RTLD_LAZY ) )
124 {
125 }
126 
127 //__________________________________________________________________________________________________
128 RTTI::~RTTI() SAL_THROW( () )
129 {
130     dlclose( m_hApp );
131 }
132 
133 //__________________________________________________________________________________________________
134 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
135 {
136     type_info * rtti;
137 
138     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
139 
140     MutexGuard guard( m_mutex );
141     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
142     if (iFind == m_rttis.end())
143     {
144         // build the mangled name for unoName's RTTI typeinfo symbol
145         OStringBuffer buf( 64 );
146         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
147         sal_Int32 index = 0;
148         do
149         {
150             OUString token( unoName.getToken( 0, '.', index ) );
151             buf.append( token.getLength() );
152             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
153             buf.append( c_token );
154         }
155         while (index >= 0);
156         buf.append( 'E' );
157 
158         OString symName( buf.makeStringAndClear() );
159         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
160 
161         if (rtti)
162         {
163             pair< t_rtti_map::iterator, bool > insertion(
164                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
165             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
166         }
167         else
168         {
169             // try to lookup the symbol in the generated rtti map
170             t_rtti_map::const_iterator iFind2( m_generatedRttis.find( unoName ) );
171             if (iFind2 == m_generatedRttis.end())
172             {
173                 // we must generate it !
174                 // symbol and rtti-name is nearly identical,
175                 // the symbol is prefixed with _ZTI
176                 char const * rttiName = symName.getStr() +4;
177 #if OSL_DEBUG_LEVEL > 1
178                 fprintf( stderr,"generated rtti for %s\n", rttiName );
179 #endif
180                 if (pTypeDescr->pBaseTypeDescription)
181                 {
182                     // ensure availability of base
183                     type_info * base_rtti = getRTTI(
184                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
185                     rtti = new __si_class_type_info(
186                         strdup( rttiName ), (__class_type_info *)base_rtti );
187                 }
188                 else
189                 {
190                     // this class has no base class
191                     rtti = new __class_type_info( strdup( rttiName ) );
192                 }
193 
194                 pair< t_rtti_map::iterator, bool > insertion(
195                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
196                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
197             }
198             else // taking already generated rtti
199             {
200                 rtti = iFind2->second;
201             }
202         }
203     }
204     else
205     {
206         rtti = iFind->second;
207     }
208 
209     return rtti;
210 }
211 
212 //--------------------------------------------------------------------------------------------------
213 static void deleteException( void * pExc )
214 {
215     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
216     typelib_TypeDescription * pTD = 0;
217     OUString unoName( toUNOname( header->exceptionType->name() ) );
218     ::typelib_typedescription_getByName( &pTD, unoName.pData );
219     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
220     if (pTD)
221     {
222 		::uno_destructData( pExc, pTD, cpp_release );
223 		::typelib_typedescription_release( pTD );
224 	}
225 }
226 
227 //==================================================================================================
228 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
229 {
230 #if OSL_DEBUG_LEVEL > 1
231     OString cstr(
232         OUStringToOString(
233             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
234             RTL_TEXTENCODING_ASCII_US ) );
235     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
236 #endif
237     void * pCppExc;
238     type_info * rtti;
239 
240     {
241     // construct cpp exception object
242 	typelib_TypeDescription * pTypeDescr = 0;
243 	TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
244     OSL_ASSERT( pTypeDescr );
245     if (! pTypeDescr)
246     {
247         throw RuntimeException(
248             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
249             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
250             Reference< XInterface >() );
251     }
252 
253 	pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
254 	::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
255 
256 	// destruct uno exception
257 	::uno_any_destruct( pUnoExc, 0 );
258     // avoiding locked counts
259     static RTTI * s_rtti = 0;
260     if (! s_rtti)
261     {
262         MutexGuard guard( Mutex::getGlobalMutex() );
263         if (! s_rtti)
264         {
265 #ifdef LEAK_STATIC_DATA
266             s_rtti = new RTTI();
267 #else
268             static RTTI rtti_data;
269             s_rtti = &rtti_data;
270 #endif
271         }
272     }
273 	rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
274     TYPELIB_DANGER_RELEASE( pTypeDescr );
275     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
276     if (! rtti)
277     {
278         throw RuntimeException(
279             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
280             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
281             Reference< XInterface >() );
282     }
283     }
284 
285 	__cxa_throw( pCppExc, rtti, deleteException );
286 }
287 
288 //==================================================================================================
289 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
290 {
291     if (! header)
292     {
293         RuntimeException aRE(
294             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
295             Reference< XInterface >() );
296         Type const & rType = ::getCppuType( &aRE );
297         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
298 #if OSL_DEBUG_LEVEL > 0
299         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
300         OSL_ENSURE( 0, cstr.getStr() );
301 #endif
302         return;
303     }
304 
305 	typelib_TypeDescription * pExcTypeDescr = 0;
306     OUString unoName( toUNOname( header->exceptionType->name() ) );
307 #if OSL_DEBUG_LEVEL > 1
308     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
309     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
310 #endif
311 	typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
312     if (0 == pExcTypeDescr)
313     {
314         RuntimeException aRE(
315             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
316             Reference< XInterface >() );
317         Type const & rType = ::getCppuType( &aRE );
318         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
319 #if OSL_DEBUG_LEVEL > 0
320         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
321         OSL_ENSURE( 0, cstr.getStr() );
322 #endif
323     }
324     else
325     {
326         // construct uno exception any
327         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
328         typelib_typedescription_release( pExcTypeDescr );
329     }
330 }
331 
332 }
333 
334