/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* 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 "OFString.h"
#import "OFLocalization.h"
#import "OFInitializationFailedException.h"
#import "OFOpenItemFailedException.h"
typedef OFPlugin *(*init_plugin_t)(void);
of_plugin_handle_t
of_dlopen(OFString *path, int flags)
{
#ifndef OF_WINDOWS
return dlopen([path cStringWithEncoding: [OFLocalization encoding]],
flags);
#else
if (path == nil)
return GetModuleHandle(NULL);
return LoadLibraryW([path UTF16String]);
#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
}
@implementation OFPlugin
+ (id)pluginFromFile: (OFString *)path
{
void *pool = objc_autoreleasePoolPush();
of_plugin_handle_t handle;
init_plugin_t initPlugin;
OFPlugin *plugin;
path = [path stringByAppendingString: @PLUGIN_SUFFIX];
if ((handle = of_dlopen(path, OF_RTLD_LAZY)) == NULL)
@throw [OFOpenItemFailedException exceptionWithPath: path
mode: nil
errNo: 0];
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->_handle = 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 = _handle;
[super dealloc];
of_dlclose(h);
}
@end