miinitext.c revision bf8e669c 
1/***********************************************************
2
3Copyright 1987, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
26
27                        All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Digital not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45******************************************************************/
46
47/*
48 * Copyright (c) 2000 by The XFree86 Project, Inc.
49 *
50 * Permission is hereby granted, free of charge, to any person obtaining a
51 * copy of this software and associated documentation files (the "Software"),
52 * to deal in the Software without restriction, including without limitation
53 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
54 * and/or sell copies of the Software, and to permit persons to whom the
55 * Software is furnished to do so, subject to the following conditions:
56 *
57 * The above copyright notice and this permission notice shall be included in
58 * all copies or substantial portions of the Software.
59 *
60 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
61 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
62 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
63 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
64 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
65 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
66 * OTHER DEALINGS IN THE SOFTWARE.
67 *
68 * Except as contained in this notice, the name of the copyright holder(s)
69 * and author(s) shall not be used in advertising or otherwise to promote
70 * the sale, use or other dealings in this Software without prior written
71 * authorization from the copyright holder(s) and author(s).
72 */
73
74#ifdef HAVE_DIX_CONFIG_H
75#include <dix-config.h>
76#endif
77
78#ifdef HAVE_XORG_CONFIG_H
79#include <xorg-config.h>
80#include "xf86Extensions.h"
81#endif
82
83#ifdef HAVE_DMX_CONFIG_H
84#include <dmx-config.h>
85#undef XV
86#undef DBE
87#undef SCREENSAVER
88#undef RANDR
89#undef DAMAGE
90#undef COMPOSITE
91#undef MITSHM
92#endif
93
94#ifdef HAVE_XNEST_CONFIG_H
95#include <xnest-config.h>
96#undef COMPOSITE
97#undef DPMSExtension
98#endif
99
100#include "misc.h"
101#include "extension.h"
102#include "extinit.h"
103#ifdef INXQUARTZ
104#include "nonsdk_extinit.h"
105#endif
106#include "micmap.h"
107#include "os.h"
108#include "globals.h"
109
110/* List of built-in (statically linked) extensions */
111static const ExtensionModule staticExtensions[] = {
112    {GEExtensionInit, "Generic Event Extension", &noGEExtension},
113    {ShapeExtensionInit, "SHAPE", NULL},
114#ifdef MITSHM
115    {ShmExtensionInit, "MIT-SHM", &noMITShmExtension},
116#endif
117    {XInputExtensionInit, "XInputExtension", NULL},
118#ifdef XTEST
119    {XTestExtensionInit, "XTEST", &noTestExtensions},
120#endif
121    {BigReqExtensionInit, "BIG-REQUESTS", NULL},
122    {SyncExtensionInit, "SYNC", NULL},
123    {XkbExtensionInit, "XKEYBOARD", NULL},
124    {XCMiscExtensionInit, "XC-MISC", NULL},
125#ifdef XCSECURITY
126    {SecurityExtensionInit, "SECURITY", &noSecurityExtension},
127#endif
128#ifdef PANORAMIX
129    {PanoramiXExtensionInit, "XINERAMA", &noPanoramiXExtension},
130#endif
131#ifdef INXQUARTZ
132    /* PseudoramiXExtensionInit must be done before RRExtensionInit, or
133     * XQuartz will render windows offscreen.
134     */
135    {PseudoramiXExtensionInit, "PseudoramiX", &noPseudoramiXExtension},
136#endif
137    /* must be before Render to layer DisplayCursor correctly */
138    {XFixesExtensionInit, "XFIXES", &noXFixesExtension},
139#ifdef XF86BIGFONT
140    {XFree86BigfontExtensionInit, "XFree86-Bigfont", &noXFree86BigfontExtension},
141#endif
142    {RenderExtensionInit, "RENDER", &noRenderExtension},
143#ifdef RANDR
144    {RRExtensionInit, "RANDR", &noRRExtension},
145#endif
146#ifdef COMPOSITE
147    {CompositeExtensionInit, "COMPOSITE", &noCompositeExtension},
148#endif
149#ifdef DAMAGE
150    {DamageExtensionInit, "DAMAGE", &noDamageExtension},
151#endif
152#ifdef SCREENSAVER
153    {ScreenSaverExtensionInit, "MIT-SCREEN-SAVER", &noScreenSaverExtension},
154#endif
155#ifdef DBE
156    {DbeExtensionInit, "DOUBLE-BUFFER", &noDbeExtension},
157#endif
158#ifdef XRECORD
159    {RecordExtensionInit, "RECORD", &noTestExtensions},
160#endif
161#ifdef DPMSExtension
162    {DPMSExtensionInit, "DPMS", &noDPMSExtension},
163#endif
164#ifdef PRESENT
165    {present_extension_init, "Present", NULL},
166#endif
167#ifdef DRI3
168    {dri3_extension_init, "DRI3", NULL},
169#endif
170#ifdef RES
171    {ResExtensionInit, "X-Resource", &noResExtension},
172#endif
173#ifdef XV
174    {XvExtensionInit, "XVideo", &noXvExtension},
175    {XvMCExtensionInit, "XVideo-MotionCompensation", &noXvExtension},
176#endif
177#ifdef XSELINUX
178    {SELinuxExtensionInit, "SELinux", &noSELinuxExtension},
179#endif
180#ifdef GLXEXT
181    {GlxExtensionInit, "GLX", &noGlxExtension},
182#endif
183};
184
185Bool
186EnableDisableExtension(const char *name, Bool enable)
187{
188    const ExtensionModule *ext;
189    int i;
190
191    for (i = 0; i < ARRAY_SIZE(staticExtensions); i++) {
192        ext = &staticExtensions[i];
193        if (strcasecmp(name, ext->name) == 0) {
194            if (ext->disablePtr != NULL) {
195                *ext->disablePtr = !enable;
196                return TRUE;
197            }
198            else {
199                /* Extension is always on, impossible to disable */
200                return enable;  /* okay if they wanted to enable,
201                                   fail if they tried to disable */
202            }
203        }
204    }
205
206    return FALSE;
207}
208
209void
210EnableDisableExtensionError(const char *name, Bool enable)
211{
212    const ExtensionModule *ext;
213    int i;
214    Bool found = FALSE;
215
216    for (i = 0; i < ARRAY_SIZE(staticExtensions); i++) {
217        ext = &staticExtensions[i];
218        if ((strcmp(name, ext->name) == 0) && (ext->disablePtr == NULL)) {
219            ErrorF("[mi] Extension \"%s\" can not be disabled\n", name);
220            found = TRUE;
221            break;
222        }
223    }
224    if (found == FALSE)
225        ErrorF("[mi] Extension \"%s\" is not recognized\n", name);
226    ErrorF("[mi] Only the following extensions can be run-time %s:\n",
227           enable ? "enabled" : "disabled");
228    for (i = 0; i < ARRAY_SIZE(staticExtensions); i++) {
229        ext = &staticExtensions[i];
230        if (ext->disablePtr != NULL) {
231            ErrorF("[mi]    %s\n", ext->name);
232        }
233    }
234}
235
236static ExtensionModule *ExtensionModuleList = NULL;
237static int numExtensionModules = 0;
238
239static void
240AddStaticExtensions(void)
241{
242    static Bool listInitialised = FALSE;
243
244    if (listInitialised)
245        return;
246    listInitialised = TRUE;
247
248    /* Add built-in extensions to the list. */
249    LoadExtensionList(staticExtensions, ARRAY_SIZE(staticExtensions), TRUE);
250}
251
252void
253InitExtensions(int argc, char *argv[])
254{
255    int i;
256    ExtensionModule *ext;
257
258    AddStaticExtensions();
259
260    for (i = 0; i < numExtensionModules; i++) {
261        ext = &ExtensionModuleList[i];
262        if (ext->initFunc != NULL &&
263            (ext->disablePtr == NULL || !*ext->disablePtr)) {
264            LogMessageVerb(X_INFO, 3, "Initializing extension %s\n",
265                           ext->name);
266
267            (ext->initFunc) ();
268        }
269    }
270}
271
272static ExtensionModule *
273NewExtensionModuleList(int size)
274{
275    ExtensionModule *save = ExtensionModuleList;
276    int n;
277
278    /* Sanity check */
279    if (!ExtensionModuleList)
280        numExtensionModules = 0;
281
282    n = numExtensionModules + size;
283    ExtensionModuleList = reallocarray(ExtensionModuleList, n,
284                                       sizeof(ExtensionModule));
285    if (ExtensionModuleList == NULL) {
286        ExtensionModuleList = save;
287        return NULL;
288    }
289    else {
290        numExtensionModules += size;
291        return ExtensionModuleList + (numExtensionModules - size);
292    }
293}
294
295void
296LoadExtensionList(const ExtensionModule ext[], int size, Bool builtin)
297{
298    ExtensionModule *newext;
299    int i;
300
301    /* Make sure built-in extensions get added to the list before those
302     * in modules. */
303    AddStaticExtensions();
304
305    if (!(newext = NewExtensionModuleList(size)))
306        return;
307
308    for (i = 0; i < size; i++, newext++) {
309        newext->name = ext[i].name;
310        newext->initFunc = ext[i].initFunc;
311        newext->disablePtr = ext[i].disablePtr;
312    }
313}
314