mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-23 21:02:50 +00:00
175 lines
3.8 KiB
C
175 lines
3.8 KiB
C
/*
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plugin.c
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QuakeForge plugin API functions
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Copyright (C) 2001 Jeff Teunissen <deek@quakeforge.net>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STDIO_H
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# include <stdio.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_WINDOWS_H
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# include <windows.h>
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#endif
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#ifdef HAVE_DLFCN_H
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# include <dlfcn.h>
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#endif
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#ifndef RTLD_LAZY
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# ifdef DL_LAZY
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# define RTLD_LAZY DL_LAZY
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# else
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# define RTLD_LAZY 0
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# endif
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#endif
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#include "QF/cvar.h"
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#include "QF/plugin.h"
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#include "QF/console.h"
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#include "compat.h"
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cvar_t *fs_pluginpath;
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void
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PI_InitCvars (void)
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{
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fs_pluginpath = Cvar_Get ("fs_pluginpath", FS_PLUGINPATH, CVAR_ROM, NULL,
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"Location of your plugin directory");
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}
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/*
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PI_Init
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Eventually this function will likely initialize libltdl. It doesn't, yet,
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since we aren't using libltdl yet.
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*/
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void
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PI_Init (void)
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{
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PI_InitCvars ();
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}
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void
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PI_Shutdown (void)
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{
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}
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plugin_t *
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PI_LoadPlugin (const char *type, const char *name)
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{
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char realname[4096];
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char *tmpname;
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void *dlhand = NULL;
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plugin_t *plugin = NULL;
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P_PluginInfo plugin_info = NULL;
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if (!name)
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return NULL;
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tmpname = strrchr (name, '/'); // Get the base name, don't allow paths
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// Build the path to the file to load
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#if defined(HAVE_DLOPEN)
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snprintf (realname, sizeof (realname), "%s/lib%s_%s.so",
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fs_pluginpath->string, type, (tmpname ? tmpname + 1 : name));
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#elif defined(_WIN32)
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snprintf (realname, sizeof (realname), "%s/QF%s_%s.dll",
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fs_pluginpath->string, type, (tmpname ? tmpname + 1 : name));
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#else
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# error "No shared library support. FIXME"
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return NULL;
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#endif
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#if defined(HAVE_DLOPEN)
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if (!(dlhand = dlopen (realname, RTLD_LAZY))) { // lib not found
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Con_Printf ("Could not load plugin \"%s\": %s\n", realname,
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dlerror ());
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return NULL;
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}
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#elif defined (_WIN32)
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if (!(dlhand = LoadLibrary (realname))) { // lib not found
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Con_Printf ("Could not load plugin \"%s\".\n", realname);
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return NULL;
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}
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#endif
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#if defined(HAVE_DLOPEN)
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if (!(plugin_info = dlsym (dlhand, "PluginInfo"))) {
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// info function not found
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dlclose (dlhand);
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Con_Printf ("Plugin info function not found\n");
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return NULL;
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}
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#elif defined (_WIN32)
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if (!(plugin_info = (P_PluginInfo) GetProcAddress (dlhand,
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"PluginInfo"))) {
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// info function not found
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FreeLibrary (dlhand);
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Con_Printf ("Plugin info function not found\n");
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return NULL;
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}
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#endif
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if (!(plugin = plugin_info ())) { // Something went badly wrong
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#if defined(HAVE_DLOPEN)
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dlclose (dlhand);
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#elif defined (_WIN32)
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FreeLibrary (dlhand);
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#endif
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Con_Printf ("Something went badly wrong.\n");
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return NULL;
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}
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plugin->handle = dlhand;
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return plugin;
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}
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qboolean
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PI_UnloadPlugin (plugin_t *plugin)
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{
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if (plugin
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&& plugin->functions
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&& plugin->functions->general
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&& plugin->functions->general->p_Shutdown) {
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plugin->functions->general->p_Shutdown ();
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} else {
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Con_Printf ("Warning: No shutdown function for type %d plugin!\n", plugin->type);
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}
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#if defined(HAVE_DLOPEN)
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return (dlclose (plugin->handle) == 0);
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#elif defined (_WIN32)
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return (FreeLibrary (plugin->handle) == 0);
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#endif
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}
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