/***********************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.

Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#undef XV
#undef DBE
#undef XF86VIDMODE
#undef XFreeXDGA
#undef XF86DRI
#undef SCREENSAVER
#undef RANDR
#undef XFIXES
#undef DAMAGE
#undef COMPOSITE
#undef MITSHM
#endif

#ifdef HAVE_XNEST_CONFIG_H
#include <xnest-config.h>
#undef COMPOSITE
#undef DPMSExtension
#endif

#ifdef HAVE_KDRIVE_CONFIG_H
#include <kdrive-config.h>
/* there must be a better way... */
#undef XFreeXDGA
#undef XF86DRI
#undef XF86VIDMODE
#endif

#ifdef HAVE_XGL_CONFIG_H
#include <xgl-config.h>
#undef XFreeXDGA
#undef XF86DRI
#undef XF86VIDMODE
#endif

#include "misc.h"
#include "extension.h"
#include "extinit.h"
#include "micmap.h"
#include "globals.h"

#ifndef XFree86LOADER
typedef void (*InitExtension) (void);
#else                           /* XFree86Loader */
#include "loaderProcs.h"
#include "xf86Extensions.h"
#endif

/* The following is only a small first step towards run-time
 * configurable extensions.
 */
typedef struct {
    const char *name;
    Bool *disablePtr;
} ExtensionToggle;

static ExtensionToggle ExtensionToggleList[] = {
    /* sort order is extension name string as shown in xdpyinfo */
    {"Generic Events", &noGEExtension},
#ifdef COMPOSITE
    {"Composite", &noCompositeExtension},
#endif
#ifdef DAMAGE
    {"DAMAGE", &noDamageExtension},
#endif
#ifdef DBE
    {"DOUBLE-BUFFER", &noDbeExtension},
#endif
#ifdef DPMSExtension
    {"DPMS", &noDPMSExtension},
#endif
#ifdef GLXEXT
    {"GLX", &noGlxExtension},
#endif
#ifdef SCREENSAVER
    {"MIT-SCREEN-SAVER", &noScreenSaverExtension},
#endif
#ifdef MITSHM
    {SHMNAME, &noMITShmExtension},
#endif
#ifdef RANDR
    {"RANDR", &noRRExtension},
#endif
    {"RENDER", &noRenderExtension},
#ifdef XCSECURITY
    {"SECURITY", &noSecurityExtension},
#endif
#ifdef RES
    {"X-Resource", &noResExtension},
#endif
#ifdef XF86BIGFONT
    {"XFree86-Bigfont", &noXFree86BigfontExtension},
#endif
#ifndef NO_HW_ONLY_EXTS
#ifdef XFreeXDGA
    {"XFree86-DGA", &noXFree86DGAExtension},
#endif
#ifdef XF86DRI
    {"XFree86-DRI", &noXFree86DRIExtension},
#endif
#ifdef XF86VIDMODE
    {"XFree86-VidModeExtension", &noXFree86VidModeExtension},
#endif
#endif
#ifdef XFIXES
    {"XFIXES", &noXFixesExtension},
#endif
#ifdef PANORAMIX
    {"XINERAMA", &noPanoramiXExtension},
#endif
    {"XInputExtension", NULL},
    {"XKEYBOARD", NULL},
#ifdef XSELINUX
    {"SELinux", &noSELinuxExtension},
#endif
    {"XTEST", &noTestExtensions},
#ifdef XV
    {"XVideo", &noXvExtension},
#endif
};

Bool
EnableDisableExtension(const char *name, Bool enable)
{
    ExtensionToggle *ext;
    int i;

    for (i = 0; i < ARRAY_SIZE(ExtensionToggleList); i++) {
        ext = &ExtensionToggleList[i];
        if (strcmp(name, ext->name) == 0) {
            if (ext->disablePtr != NULL) {
                *ext->disablePtr = !enable;
                return TRUE;
            }
            else {
                /* Extension is always on, impossible to disable */
                return enable;  /* okay if they wanted to enable,
                                   fail if they tried to disable */
            }
        }
    }

    return FALSE;
}

void
EnableDisableExtensionError(const char *name, Bool enable)
{
    ExtensionToggle *ext = &ExtensionToggleList[0];
    Bool found = FALSE;

    for (ext = &ExtensionToggleList[0]; ext->name != NULL; ext++) {
        if ((strcmp(name, ext->name) == 0) && (ext->disablePtr == NULL)) {
            ErrorF("[mi] Extension \"%s\" can not be disabled\n", name);
            found = TRUE;
            break;
        }
    }
    if (found == FALSE)
        ErrorF("[mi] Extension \"%s\" is not recognized\n", name);
    ErrorF("[mi] Only the following extensions can be run-time %s:\n",
           enable ? "enabled" : "disabled");
    for (ext = &ExtensionToggleList[0]; ext->name != NULL; ext++) {
        if (ext->disablePtr != NULL) {
            ErrorF("[mi]    %s\n", ext->name);
        }
    }
}

#ifndef XFree86LOADER

 /*ARGSUSED*/ void
InitExtensions(int argc, char *argv[])
{
    if (!noGEExtension)
        GEExtensionInit();

    ShapeExtensionInit();

#ifdef MITSHM
    if (!noMITShmExtension)
        ShmExtensionInit();
#endif

    XInputExtensionInit();

#ifdef XTEST
    if (!noTestExtensions)
        XTestExtensionInit();
#endif

    BigReqExtensionInit();
    SyncExtensionInit();
    XkbExtensionInit();
    XCMiscExtensionInit();

#ifdef XCSECURITY
    if (!noSecurityExtension)
        SecurityExtensionInit();
#endif

#ifdef PANORAMIX
    if (!noPanoramiXExtension)
        PanoramiXExtensionInit();
#endif

#ifdef INXQUARTZ
    if (!noPseudoramiXExtension)
        PseudoramiXExtensionInit();
#endif

#ifdef XFIXES
    /* must be before Render to layer DisplayCursor correctly */
    if (!noXFixesExtension)
        XFixesExtensionInit();
#endif

#ifdef XF86BIGFONT
    if (!noXFree86BigfontExtension)
        XFree86BigfontExtensionInit();
#endif

    if (!noRenderExtension)
        RenderExtensionInit();

#ifdef RANDR
    if (!noRRExtension)
        RRExtensionInit();
#endif

#ifdef COMPOSITE
    if (!noCompositeExtension)
        CompositeExtensionInit();
#endif

#ifdef DAMAGE
    if (!noDamageExtension)
        DamageExtensionInit();
#endif

#ifdef XSELINUX
    if (!noSELinuxExtension)
        SELinuxExtensionInit();
#endif

#if defined(SCREENSAVER)
    if (!noScreenSaverExtension)
        ScreenSaverExtensionInit();
#endif

#if !defined(NO_HW_ONLY_EXTS)
#if defined(XF86VIDMODE)
    if (!noXFree86VidModeExtension)
        XFree86VidModeExtensionInit();
#endif
#if defined(XFreeXDGA)
    if (!noXFree86DGAExtension)
        XFree86DGAExtensionInit();
#endif
#ifdef DPMSExtension
    if (!noDPMSExtension)
        DPMSExtensionInit();
#endif
#endif

#ifdef XV
    if (!noXvExtension) {
        XvExtensionInit();
        XvMCExtensionInit();
    }
#endif

#ifdef RES
    if (!noResExtension)
        ResExtensionInit();
#endif

#ifdef XRECORD
    if (!noTestExtensions)
        RecordExtensionInit();
#endif

#ifdef DBE
    if (!noDbeExtension)
        DbeExtensionInit();
#endif

#if !defined(NO_HW_ONLY_EXTS) && defined(XF86DRI)
    if (!noXFree86DRIExtension)
        XFree86DRIExtensionInit();
#endif

#ifdef DMXEXT
    DMXExtensionInit();         /* server-specific extension, cannot be disabled */
#endif

#ifdef GLXEXT
    if (!noGlxExtension)
        GlxExtensionInit();
#endif
}

#else                           /* XFree86LOADER */
/* List of built-in (statically linked) extensions */
static ExtensionModule staticExtensions[] = {
    {GEExtensionInit, "Generic Event Extension", &noGEExtension, NULL, NULL},
    {ShapeExtensionInit, "SHAPE", NULL, NULL, NULL},
#ifdef MITSHM
    {ShmExtensionInit, SHMNAME, &noMITShmExtension, NULL, NULL},
#endif
    {XInputExtensionInit, "XInputExtension", NULL, NULL, NULL},
#ifdef XTEST
    {XTestExtensionInit, XTestExtensionName, &noTestExtensions, NULL, NULL},
#endif
    {BigReqExtensionInit, "BIG-REQUESTS", NULL, NULL, NULL},
    {SyncExtensionInit, "SYNC", NULL, NULL, NULL},
    {XkbExtensionInit, XkbName, NULL, NULL, NULL},
    {XCMiscExtensionInit, "XC-MISC", NULL, NULL, NULL},
#ifdef XCSECURITY
    {SecurityExtensionInit, SECURITY_EXTENSION_NAME, &noSecurityExtension, NULL,
     NULL},
#endif
#ifdef PANORAMIX
    {PanoramiXExtensionInit, PANORAMIX_PROTOCOL_NAME, &noPanoramiXExtension,
     NULL, NULL},
#endif
#ifdef XFIXES
    /* must be before Render to layer DisplayCursor correctly */
    {XFixesExtensionInit, "XFIXES", &noXFixesExtension, NULL, NULL},
#endif
#ifdef XF86BIGFONT
    {XFree86BigfontExtensionInit, XF86BIGFONTNAME, &noXFree86BigfontExtension,
     NULL, NULL},
#endif
    {RenderExtensionInit, "RENDER", &noRenderExtension, NULL, NULL},
#ifdef RANDR
    {RRExtensionInit, "RANDR", &noRRExtension, NULL, NULL},
#endif
#ifdef COMPOSITE
    {CompositeExtensionInit, "COMPOSITE", &noCompositeExtension, NULL},
#endif
#ifdef DAMAGE
    {DamageExtensionInit, "DAMAGE", &noDamageExtension, NULL},
#endif
#ifdef SCREENSAVER
    {ScreenSaverExtensionInit, ScreenSaverName, &noScreenSaverExtension, NULL},
#endif
#ifdef DBE
    {DbeExtensionInit, "DOUBLE-BUFFER", &noDbeExtension, NULL},
#endif
#ifdef XRECORD
    {RecordExtensionInit, "RECORD", &noTestExtensions, NULL},
#endif
#ifdef DPMSExtension
    {DPMSExtensionInit, DPMSExtensionName, &noDPMSExtension, NULL},
#endif
#ifdef RES
    {ResExtensionInit, XRES_NAME, &noResExtension, NULL},
#endif
#ifdef XV
    {XvExtensionInit, XvName, &noXvExtension, NULL},
    {XvMCExtensionInit, XvMCName, &noXvExtension, NULL},
#endif
#ifdef XSELINUX
    {SELinuxExtensionInit, SELINUX_EXTENSION_NAME, &noSELinuxExtension, NULL},
#endif
};

 /*ARGSUSED*/ void
InitExtensions(int argc, char *argv[])
{
    int i;
    ExtensionModule *ext;
    static Bool listInitialised = FALSE;

    if (!listInitialised) {
        /* Add built-in extensions to the list. */
        for (i = 0; i < ARRAY_SIZE(staticExtensions); i++)
            LoadExtension(&staticExtensions[i], TRUE);

        /* Sort the extensions according the init dependencies. */
        LoaderSortExtensions();
        listInitialised = TRUE;
    }

    for (i = 0; ExtensionModuleList[i].name != NULL; i++) {
        ext = &ExtensionModuleList[i];
        if (ext->initFunc != NULL &&
            (ext->disablePtr == NULL || !*ext->disablePtr)) {
            (ext->initFunc) ();
        }
    }
}

#endif                          /* XFree86LOADER */
