X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/17dff81c7141e142765b168ab225e5c61475669f..7b9da2077d0975db6c965a85c91d5aca671ab5e3:/src/common/dynlib.cpp diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index 6b8bf78e38..8ad47c2b83 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -9,229 +9,364 @@ // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ -#pragma implementation "dynlib.h" +# pragma implementation "dynlib.h" #endif #include "wx/wxprec.h" -#ifdef __BORLANDC__ +#ifdef __BORLANDC__ #pragma hdrstop -#endif //__BORLANDC__ - -#ifndef WX_PRECOMP -#endif //WX_PRECOMP - -#include -#include -#include -#include +#endif +#if wxUSE_DYNLIB_CLASS + +#include "wx/dynlib.h" +#include "wx/filefn.h" +#include "wx/intl.h" +#include "wx/log.h" +#include "wx/tokenzr.h" + +// ---------------------------------------------------------------------------- +// conditional compilation +// ---------------------------------------------------------------------------- + +#if defined(HAVE_DLOPEN) +# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/) +# define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str()) +# define wxDllClose dlclose +#elif defined(HAVE_SHL_LOAD) +# define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0) +# define wxDllClose shl_unload + + static inline void *wxDllGetSymbol(shl_t handle, const wxString& name) + { + void *sym; + if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 ) + return sym; + else + return (void *)0; + } +#elif defined(__WINDOWS__) +# include + + // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary +# ifdef __WIN32__ +# define wxDllOpen(lib) ::LoadLibraryEx(lib, 0, 0) +# else // Win16 +# define wxDllOpen(lib) ::LoadLibrary(lib) +# endif // Win32/16 +# define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name) +# define wxDllClose ::FreeLibrary + +#elif defined(__OS2__) + +# define INCL_DOS +# include +# define wxDllOpen(error, lib, handle) DosLoadModule(error, sizeof(error), lib, &handle) +# define wxDllGetSymbol(handle, modaddr) DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr) +# define wxDllClose(handle) DosFreeModule(handle) +#else +# error "Don't know how to load shared libraries on this platform." +#endif // OS // --------------------------------------------------------------------------- -// System dependent include +// Global variables // --------------------------------------------------------------------------- -#if defined(__UNIX__) -#include -#endif +wxLibraries wxTheLibraries; -#ifdef __WINDOWS__ -#include -#endif +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- -#ifdef LoadLibrary -#undef LoadLibrary +// construct the full name from the base shared object name: adds a .dll +// suffix under Windows or .so under Unix +static wxString ConstructLibraryName(const wxString& basename) +{ + wxString fullname(basename); + +#if defined(__UNIX__) +# if defined(__HPUX__) + fullname << ".sl"; +# else //__HPUX__ + fullname << ".so"; +# endif //__HPUX__ +#elif defined(__WINDOWS__) || defined(__OS2__) + fullname << ".dll"; #endif -// --------------------------------------------------------------------------- -// Global variables -// --------------------------------------------------------------------------- + return fullname; +} + +// ============================================================================ +// implementation +// ============================================================================ -wxLibraries wxTheLibraries; // --------------------------------------------------------------------------- -// wxLibrary (one instance per dynamic library +// wxLibrary (one instance per dynamic library) // --------------------------------------------------------------------------- -wxLibrary::wxLibrary(void *handle) +wxLibrary::wxLibrary(wxDllType handle) { - typedef wxClassInfo *(*t_get_first)(void); - t_get_first get_first; + typedef wxClassInfo *(*t_get_first)(void); + t_get_first get_first; - m_handle = handle; - m_destroy = TRUE; + m_handle = handle; - // Some system may use a local heap for library. - get_first = (t_get_first)GetSymbol("wxGetClassFirst"); - // It is a wxWindows DLL. - if (get_first) - PrepareClasses(get_first()); + // Some system may use a local heap for library. + get_first = (t_get_first)GetSymbol("wxGetClassFirst"); + // It is a wxWindows DLL. + if (get_first) + PrepareClasses(get_first()); } wxLibrary::~wxLibrary() { - if (m_handle && m_destroy) { -#if defined(__UNIX__) - dlclose(m_handle); -#endif -#ifdef __WINDOWS__ - FreeLibrary((HMODULE)m_handle); -#endif - } + if ( m_handle ) + { + wxDllClose(m_handle); + } } wxObject *wxLibrary::CreateObject(const wxString& name) { - wxClassInfo *info = (wxClassInfo *)classTable.Get(name); + wxClassInfo *info = (wxClassInfo *)classTable.Get(name); - if (!info) - return NULL; + if (!info) + return NULL; - return info->CreateObject(); + return info->CreateObject(); } void wxLibrary::PrepareClasses(wxClassInfo *first) { - // Index all class infos by their class name - wxClassInfo *info = first; - while (info) - { - if (info->m_className) - classTable.Put(info->m_className, (wxObject *)info); - info = info->GetNext(); - } - - // Set base pointers for each wxClassInfo - info = first; - while (info) - { - if (info->GetBaseClassName1()) - info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1()); - if (info->GetBaseClassName2()) - info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2()); - info = info->m_next; - } + // Index all class infos by their class name + wxClassInfo *info = first; + while (info) + { + if (info->m_className) + classTable.Put(info->m_className, (wxObject *)info); + info = info->GetNext(); + } + + // Set base pointers for each wxClassInfo + info = first; + while (info) + { + if (info->GetBaseClassName1()) + info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1()); + if (info->GetBaseClassName2()) + info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2()); + info = info->m_next; + } } void *wxLibrary::GetSymbol(const wxString& symbname) { -#if defined(__UNIX__) - return dlsym(m_handle, WXSTRINGCAST symbname); -#elif defined( __WINDOWS__ ) - return GetProcAddress((HINSTANCE) m_handle, WXSTRINGCAST symbname); -#elif defined( __WXMAC__ ) - Ptr symAddress ; - CFragSymbolClass symClass ; - Str255 symName ; - - strcpy( (char*) symName , symbname ) ; - c2pstr( (char*) symName ) ; - - if ( FindSymbol( (CFragConnectionID) m_handle , symName , &symAddress , &symClass ) == noErr ) - { - return symAddress ; - } -#endif - return NULL; + return wxDllLoader::GetSymbol(m_handle, symbname); } // --------------------------------------------------------------------------- -// wxLibraries (only one instance should normally exist) +// wxDllLoader // --------------------------------------------------------------------------- -wxLibraries::wxLibraries() +/* static */ +wxDllType +wxDllLoader::GetProgramHandle(void) { +#if defined( HAVE_DLOPEN ) + // optain handle for main program + return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); +#elif defined (HAVE_SHL_LOAD) + // shl_findsymbol with NULL handle looks up in main program + return 0; +#else + wxFAIL_MSG(_("This method is not implemented under Windows or OS/2")); + return 0; +#endif } -wxLibraries::~wxLibraries() +/* static */ +wxDllType +wxDllLoader::LoadLibrary(const wxString & libname, bool *success) { - wxNode *node = m_loaded.First(); + wxDllType handle; + +#if defined(__WXMAC__) + FSSpec myFSSpec ; + Ptr myMainAddr ; + Str255 myErrName ; + + wxMacPathToFSSpec( libname , &myFSSpec ) ; + if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , + myErrName ) != noErr ) + { + p2cstr( myErrName ) ; + wxASSERT_MSG( 1 , (char*)myErrName ) ; + return NULL ; + } +#elif defined(__OS2__) + char zError[256] = ""; + wxDllOpen(zError, libname, handle); +#else // !Mac + handle = wxDllOpen(libname); +#endif // OS + + if ( !handle ) + { + wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str()); + } + + if ( success ) + { + *success = handle != 0; + } + + return handle; +} - while (node) { - wxLibrary *lib = (wxLibrary *)node->Data(); - delete lib; - node = node->Next(); - } +/* static */ +void +wxDllLoader::UnloadLibrary(wxDllType handle) +{ + wxDllClose(handle); } -wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +/* static */ +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) { - wxString lib_name = name; - wxNode *node; - wxLibrary *lib; - wxClassInfo *old_sm_first; + void *symbol = NULL; // return value - if ( (node = m_loaded.Find(name.GetData())) ) - return ((wxLibrary *)node->Data()); +#if defined( __WXMAC__ ) + Ptr symAddress ; + CFragSymbolClass symClass ; + Str255 symName ; - // If DLL shares data, this is necessary. - old_sm_first = wxClassInfo::sm_first; - wxClassInfo::sm_first = NULL; + strcpy( (char*) symName , name ) ; + c2pstr( (char*) symName ) ; -#if defined(__UNIX__) - lib_name.Prepend("./lib"); - lib_name += ".so"; + if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr ) + symbol = (void *)symAddress ; +#elif defined( __OS2__ ) + wxDllGetSymbol(dllHandle, symbol); +#else + symbol = wxDllGetSymbol(dllHandle, name); +#endif - printf("lib_name = %s\n", WXSTRINGCAST lib_name); + if ( !symbol ) + { + wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), + name.c_str()); + } + return symbol; +} - void *handle = dlopen(WXSTRINGCAST lib_name, RTLD_LAZY); +// --------------------------------------------------------------------------- +// wxLibraries (only one instance should normally exist) +// --------------------------------------------------------------------------- - printf("error = %s\n", dlerror()); +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) +{ +} - if (!handle) - return NULL; -#elif defined(__WINDOWS__) - lib_name += ".dll"; +wxLibraries::~wxLibraries() +{ + wxNode *node = m_loaded.First(); -#ifdef UNICODE - HMODULE handle = LoadLibraryW(lib_name); -#else -#ifdef __WIN16__ - HMODULE handle = ::LoadLibrary(lib_name); -#else - HMODULE handle = LoadLibraryA(lib_name); -#endif -#endif - if (!handle) - return NULL; -#elif defined(__WXMAC__) - FSSpec myFSSpec ; - CFragConnectionID handle ; - Ptr myMainAddr ; - Str255 myErrName ; - - wxMacPathToFSSpec( lib_name , &myFSSpec ) ; - if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , - myErrName ) != noErr ) - { - p2cstr( myErrName ) ; - wxASSERT_MSG( 1 , (char*)myErrName ) ; - return NULL ; - } -#else - return NULL; + while (node) { + wxLibrary *lib = (wxLibrary *)node->Data(); + delete lib; + + node = node->Next(); + } +} + +wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +{ + wxNode *node; + wxLibrary *lib; + wxClassInfo *old_sm_first; + +#if defined(__VISAGECPP__) + node = m_loaded.Find(name.GetData()); + if (node != NULL) + return ((wxLibrary *)node->Data()); +#else // !OS/2 + if ( (node = m_loaded.Find(name.GetData())) ) + return ((wxLibrary *)node->Data()); #endif + // If DLL shares data, this is necessary. + old_sm_first = wxClassInfo::sm_first; + wxClassInfo::sm_first = NULL; - lib = new wxLibrary((void *)handle); + wxString libname = ConstructLibraryName(name); - wxClassInfo::sm_first = old_sm_first; +/* + Unix automatically builds that library name, at least for dlopen() +*/ +#if 0 +#if defined(__UNIX__) + // found the first file in LD_LIBRARY_PATH with this name + wxString libPath("/lib:/usr/lib"); // system path first + const char *envLibPath = getenv("LD_LIBRARY_PATH"); + if ( envLibPath ) + libPath << ':' << envLibPath; + wxStringTokenizer tokenizer(libPath, wxT(':')); + while ( tokenizer.HasMoreToken() ) + { + wxString fullname(tokenizer.NextToken()); + + fullname << '/' << libname; + if ( wxFileExists(fullname) ) + { + libname = fullname; + + // found the library + break; + } + } + //else: not found in the path, leave the name as is (secutiry risk?) + +#endif // __UNIX__ +#endif - m_loaded.Append(name.GetData(), lib); - return lib; + bool success = FALSE; + wxDllType handle = wxDllLoader::LoadLibrary(libname, &success); + if(success) + { + lib = new wxLibrary(handle); + wxClassInfo::sm_first = old_sm_first; + m_loaded.Append(name.GetData(), lib); + } + else + lib = NULL; + return lib; } wxObject *wxLibraries::CreateObject(const wxString& path) { - wxNode *node = m_loaded.First(); - wxObject *obj; + wxNode *node = m_loaded.First(); + wxObject *obj; - while (node) { - obj = ((wxLibrary *)node->Data())->CreateObject(path); - if (obj) - return obj; + while (node) { + obj = ((wxLibrary *)node->Data())->CreateObject(path); + if (obj) + return obj; - node = node->Next(); - } - return NULL; + node = node->Next(); + } + return NULL; } + +#endif // wxUSE_DYNLIB_CLASS