/* * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include <stdlib.h> #include <string.h> #ifdef HAVE_DLFCN_H # include <dlfcn.h> #endif #import "OFPlugin.h" #import "OFLocale.h" #import "OFString.h" #import "OFSystemInfo.h" #import "OFInitializationFailedException.h" #import "OFLoadPluginFailedException.h" typedef OFPlugin *(*init_plugin_t)(void); of_plugin_handle_t of_dlopen(OFString *path, int flags) { #ifndef OF_WINDOWS return dlopen([path cStringWithEncoding: [OFLocale encoding]], flags); #else if (path == nil) return GetModuleHandle(NULL); if ([OFSystemInfo isWindowsNT]) return LoadLibraryW(path.UTF16String); else return LoadLibraryA( [path cStringWithEncoding: [OFLocale encoding]]); #endif } void * of_dlsym(of_plugin_handle_t handle, const char *symbol) { #ifndef OF_WINDOWS return dlsym(handle, symbol); #else return (void *)(uintptr_t)GetProcAddress(handle, symbol); #endif } void of_dlclose(of_plugin_handle_t handle) { #ifndef OF_WINDOWS dlclose(handle); #else FreeLibrary(handle); #endif } OFString * of_dlerror(void) { #ifndef OF_WINDOWS return [OFString stringWithCString: dlerror() encoding: [OFLocale encoding]]; #else return nil; #endif } @implementation OFPlugin + (id)pluginFromFile: (OFString *)path { void *pool = objc_autoreleasePoolPush(); of_plugin_handle_t handle; init_plugin_t initPlugin; OFPlugin *plugin; #if defined(OF_MACOS) path = [path stringByAppendingFormat: @".bundle/Contents/MacOS/%@", path.lastPathComponent]; #elif defined(OF_IOS) path = [path stringByAppendingFormat: @".bundle/%@", path.lastPathComponent]; #else path = [path stringByAppendingString: @PLUGIN_SUFFIX]; #endif if ((handle = of_dlopen(path, OF_RTLD_LAZY)) == NULL) @throw [OFLoadPluginFailedException exceptionWithPath: path error: of_dlerror()]; objc_autoreleasePoolPop(pool); initPlugin = (init_plugin_t)(uintptr_t)of_dlsym(handle, "init_plugin"); if (initPlugin == (init_plugin_t)0 || (plugin = initPlugin()) == nil) { of_dlclose(handle); @throw [OFInitializationFailedException exceptionWithClass: self]; } plugin->_pluginHandle = handle; return plugin; } - (instancetype)init { if ([self isMemberOfClass: [OFPlugin class]]) { @try { [self doesNotRecognizeSelector: _cmd]; } @catch (id e) { [self release]; @throw e; } abort(); } return [super init]; } - (void)dealloc { of_plugin_handle_t h = _pluginHandle; [super dealloc]; of_dlclose(h); } @end