libSystem
/* $Id$ */
/* Copyright (c) 2008-2020 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libSystem */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <stddef.h>
#ifdef __WIN32__
# include <windows.h>
#else
# include <dlfcn.h>
#endif
#include "System/error.h"
#include "System/plugin.h"
/* Plugin */
/* private */
/* constants */
#if defined(__APPLE__)
# define PLUGIN_EXTENSION ".dylib"
#elif defined(__WIN32__)
# define PLUGIN_EXTENSION ".dll"
#else
# define PLUGIN_EXTENSION ".so"
#endif
/* prototypes */
static Plugin * _plugin_open(String const * filename);
/* functions */
static Plugin * _plugin_open(String const * filename)
{
#ifdef __WIN32__
if(filename == NULL)
return GetModuleHandle(NULL);
return LoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
#else
Plugin * plugin;
if((plugin = (Plugin *)dlopen(filename, RTLD_LAZY)) == NULL)
error_set_code(1, "%s", dlerror());
return plugin;
#endif
}
/* public */
/* functions */
/* plugin_new */
Plugin * plugin_new(String const * libdir, String const * package,
String const * type, String const * name)
{
Plugin * plugin;
String * filename;
char const ext[] = PLUGIN_EXTENSION;
if((filename = string_new_append(libdir, "/", package, "/", type, "/",
name, ext, NULL)) == NULL)
return NULL;
plugin = _plugin_open(filename);
string_delete(filename);
return plugin;
}
/* plugin_new_self */
Plugin * plugin_new_self(void)
{
return _plugin_open(NULL);
}
/* plugin_delete */
void plugin_delete(Plugin * plugin)
{
#ifdef __WIN32__
FreeLibrary(plugin);
#else
dlclose(plugin);
#endif
}
/* useful */
/* plugin_lookup */
void * plugin_lookup(Plugin * plugin, String const * symbol)
{
#ifdef __WIN32__
return GetProcAddress(plugin, symbol);
#else
void * ret;
if((ret = dlsym(plugin, symbol)) == NULL)
error_set_code(1, "%s", dlerror());
return ret;
#endif
}