ObjFW  Artifact [ee4d5662a9]

Artifact ee4d5662a997995aac6354a05f9de63170e32df659c39538702cf3cecf5ae7e5:

• File src/OFPlugin.m — part of check-in [179174571e] at 2009-04-19 17:06:46 on branch trunk — Don't use forwarding for OFPlugin.

  This is faster and we don't rely on forwarding which is broken in
  both, the GNU and the Apple runtime. Eventually, there will be an
  implementation for forwarding that does work around the runtime bugs,
  but still, an implementation of OFPlugin without forwarding makes more
  sense. (user: js, size: 1562) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008 - 2009
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of libobjfw. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE included in
 * the packaging of this file.
 */

#import "config.h"

#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>

#import "OFPlugin.h"
#import "OFExceptions.h"

@implementation OFPlugin
+ pluginFromFile: (const char*)path
{
	char *file;
	size_t pathlen, suffixlen;
	void *handle;
	OFPlugin *(*init_plugin)();
	OFPlugin *plugin;
	Class c;

	if ((self = [super init])) {
		pathlen = strlen(path);
		suffixlen = strlen(PLUGIN_SUFFIX);

		if ((file = malloc(pathlen + suffixlen + 1)) == NULL) {
			c = [self class];
			[super free];
			@throw [OFNoMemException newWithClass: c
						      andSize: pathlen +
							       suffixlen + 1];
		}
		memcpy(file, path, pathlen);
		memcpy(file + pathlen, PLUGIN_SUFFIX, suffixlen);
		file[pathlen + suffixlen] = 0;

		if ((handle = dlopen(file, RTLD_NOW)) == NULL) {
			free(file);
			c = [self class];
			[super free];
			@throw [OFInitializationFailedException
			    newWithClass: c];
		}
		free(file);

		if ((init_plugin = dlsym(handle, "init_plugin")) == NULL ||
		    (plugin = init_plugin()) == nil) {
			dlclose(handle);
			c = [self class];
			[super free];
			@throw [OFInitializationFailedException
			    newWithClass: c];
		}

		plugin->handle = handle;
		return plugin;
	}

	return self;
}

- free
{
	dlclose(handle);

	return [super free];
}
@end