void *
GetDynamicFunction(const char *funcName)
{
void *func = NULL;
/* Need to open the library. */
if(moduleState->moduleLibrary == NULL &&
moduleState->moduleFile != NULL)
{
moduleState->moduleLibrary = OpenDynamicLibrary(moduleState->moduleFile);
}
if(moduleState->moduleLibrary != NULL)
{
#ifdef DEBUG_PRINT
fprintf(stderr, "Calling dlsym function to get %s.\n", funcName);
#endif
func = dlsym(moduleState->moduleLibrary, (char*)funcName);
}
#ifdef DEBUG_PRINT
else
{
fprintf(stderr, "Could not call dlsym function because library could not be opened.\n");
}
#endif
return func;
}
void dynLibImplLinux::GetImportAndExportData(
const char* dllName )
{
if( std::string(dllName).empty())
{
return;
}
Elf* mainElf;
struct link_map* mainLm;
std::string csPath_o;
OpenDynamicLibrary( dllName, mainElf, mainLm, csPath_o );
if ( mainLm == NULL )
{
return;
}
Elf_Scn* section = 0;
ElfW(Shdr) *shdr;
FindSection( mainElf, SHT_DYNAMIC, section, shdr );
std::list<std::string> dependencies;
ExtractDynSymbols( mainElf, section, shdr, STT_NOTYPE, dependencies );
std::list<std::string>::iterator it;
for(it = dependencies.begin( ); it != dependencies.end( ) ; it++) {
AddString( it->c_str() );
if ( GetDllEntry( it->c_str() ) == NULL )
{
DLL_ENTRY stImpExport;
std::string csPath_o;
if ( GetExportData( it->c_str(), stImpExport.ArrayExport, csPath_o ) )
{
stImpExport.m_bIsStable = true;
stImpExport.m_csFullPath = csPath_o;
// Add data to static internal map
MakeUpper( *it );
m_DataEntry[ *it ] = stImpExport;
}
}
DeleteString( it->c_str() );
}
dlclose( mainLm );
}
bool dynLibImplLinux::GetExportData(
const char* dynamicLibraryName,
SingleMapEntryArray& ExportEntriesArr,
std::string& csPath_o )
{
Elf* elf;
struct link_map* lm;
if ( !OpenDynamicLibrary( dynamicLibraryName, elf, lm, csPath_o ) )
{
return false;
}
if ( GetDllEntry( csPath_o ) == NULL )
{
Elf_Scn* section = 0;
ElfW(Shdr) *shdr;
FindSection( elf, SHT_SYMTAB, section, shdr );
std::list<std::string> symbols;
ExtractSymbols( elf, section, shdr, STT_FUNC, symbols );
std::list<std::string>::iterator it;
for ( it = symbols.begin( ) ; it != symbols.end( ) ; it++)
{
SINGLE_FUNCT_ENTRY newElement;
newElement.csFunction = Demangle( it->c_str( ) );
// Use dlsym because st_value sometimes is 0
//newElement.dwData = (void*) (lm->l_addr + esym->st_value);
newElement.dwData = dlsym( lm, it->c_str( ) );
newElement.csSymbol = *it;
ExportEntriesArr.push_back( newElement );
}
}
CloseDynamicLibrary( elf );
return true;
}
