141 lines
2.8 KiB
C
141 lines
2.8 KiB
C
|
/*
|
||
|
|
plugin.c
|
||
|
|
|
||
|
|
QuakeForge plugin API functions
|
||
|
|
|
||
|
|
Copyright (C) 2001 Jeff Teunissen <deek@quakeforge.net>
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU General Public License
|
||
|
|
as published by the Free Software Foundation; either version 2
|
||
|
|
of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
|
||
|
|
See the GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, write to:
|
||
|
|
|
||
|
|
Free Software Foundation, Inc.
|
||
|
|
59 Temple Place - Suite 330
|
||
|
|
Boston, MA 02111-1307, USA
|
||
|
|
|
||
|
|
$Id$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
# include "config.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_STDIO_H
|
||
|
|
# include <stdio.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_STRING_H
|
||
|
|
# include <string.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_STRINGS_H
|
||
|
|
# include <strings.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_DLFCN_H
|
||
|
|
# include <dlfcn.h>
|
||
|
|
#endif
|
||
|
|
#ifndef RTLD_LAZY
|
||
|
|
# ifdef DL_LAZY
|
||
|
|
# define RTLD_LAZY DL_LAZY
|
||
|
|
# else
|
||
|
|
# define RTLD_LAZY 0
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <QF/plugin.h>
|
||
|
|
#include <QF/console.h>
|
||
|
|
|
||
|
|
cvar_t *fs_pluginpath;
|
||
|
|
|
||
|
|
void
|
||
|
|
PI_InitCvars (void)
|
||
|
|
{
|
||
|
|
fs_pluginpath = Cvar_Get ("fs_pluginpath", FS_PLUGINPATH, CVAR_ROM, NULL,
|
||
|
|
"Location of your plugin directory");
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
PI_Init
|
||
|
|
|
||
|
|
Eventually this function will likely initialize libltdl. It doesn't, yet,
|
||
|
|
since we aren't using libltdl yet.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
PI_Init (void)
|
||
|
|
{
|
||
|
|
PI_InitCvars ();
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
PI_Shutdown (void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
plugin_t *
|
||
|
|
PI_LoadPlugin (char *type, char *name)
|
||
|
|
{
|
||
|
|
#ifdef HAVE_DLOPEN
|
||
|
|
char realname[4096];
|
||
|
|
char *tmpname;
|
||
|
|
void *dlhand = NULL;
|
||
|
|
plugin_t *plugin = NULL;
|
||
|
|
P_PluginInfo plugin_info = NULL;
|
||
|
|
|
||
|
|
if (!name)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
tmpname = strrchr (name, '/'); // Get the base name, don't allow paths
|
||
|
|
|
||
|
|
// Build the path to the file to load
|
||
|
|
snprintf (realname, sizeof (realname), "%s/%s_%s.o",
|
||
|
|
fs_pluginpath->string, type, (tmpname ? tmpname + 1 : name));
|
||
|
|
|
||
|
|
if (!(dlhand = dlopen (realname, RTLD_LAZY))) // lib not found
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if (!(plugin_info = dlsym (dlhand, "PluginInfo"))) { // info function not found
|
||
|
|
dlclose (dlhand);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(plugin = plugin_info ())) { // Something went badly wrong
|
||
|
|
dlclose (dlhand);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
plugin->handle = dlhand;
|
||
|
|
return plugin;
|
||
|
|
#else
|
||
|
|
return NULL; // no plugin support
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
qboolean
|
||
|
|
PI_UnloadPlugin (plugin_t *plugin)
|
||
|
|
{
|
||
|
|
if (plugin
|
||
|
|
&& plugin->functions
|
||
|
|
&& plugin->functions->general
|
||
|
|
&& plugin->functions->general->p_Shutdown) {
|
||
|
|
plugin->functions->general->p_Shutdown ();
|
||
|
|
} else {
|
||
|
|
Con_Printf ("Warning: No shutdown function for plugin!");
|
||
|
|
}
|
||
|
|
#ifdef HAVE_DLOPEN
|
||
|
|
return (dlclose (plugin->handle) == 0);
|
||
|
|
#else
|
||
|
|
return false;
|
||
|
|
#endif
|
||
|
|
}
|