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xorg-x11-server/xorg-server-xf4vnc-fix-keyboard-layout-handling.diff
Matthias Hopf 1cd7b05fc2 Accepting request 72266 from home:mhopf:branches:X11:XOrg 
- xorg-server-xf4vnc-fix-keyboard-layout-handling.diff
  Consolidate adapted patches for bugs 400520, 605015, and 660797 into
  single patch:
  - xorg-server-xf4vnc-bug660797-fix-keycode-lookup-and-isolevel3shift.diff
  - xorg-server-xf4vnc-bug660797-multilayout.diff
  - xorg-server-xf4vnc-bug605015-fix-keyboard-handling-xinput.diff
- Fix *major* memory leak introduced by original 1.9 enabling patch

- xorg-server-xf4vnc-bug660797-multilayout.diff
  - bnc #605015, 660797, fallout of fix from May 10:
    Keyboard handling was not XKB aware, which lead to a multitude of issues.
    Situation with this patch is not perfect, but way better.

- xorg-server-xf4vnc-bug660797-fix-keycode-lookup-and-isolevel3shift.diff
  - bnc #400520, fallout of previous fix:
    Analysis for shift/level3 event faking was broken, leading to e.g
    Shift+PgUp not being recognized correctly.

OBS-URL: https://build.opensuse.org/request/show/72266
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/xorg-x11-server?expand=0&rev=345
2011-05-31 12:29:24 +00:00

457 lines
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bnc #660797,#605015,#400520
Enable use of all keyboard layouts, independent of remotely set layout
Changes:
- Use virtual core keyboard for events and key state lookup:
Make layout changes work again - see discussion on
https://defect.opensolaris.org/bz/show_bug.cgi?id=8687
- keycode lookup:
Don't use any static keyboard layout any more.
- ISO-Level3-Shift handling:
Enable the use of keyboard layouts that use AltGr for 3rd and 4th level.
- Make keyboard handling more XKB aware:
Previous code was e.g. not multi-group aware.
- Nuke use of legacy keymap as far as possible:
Creating legacy keymap takes time, and it has to be freed again afterwards.
- Free index lookup:
Make XKB aware.
- Ignore calls for NoSymbol:
This destroys otherwise valid entries.
- Fix analysis for shift/level3 event faking:
Previous broken version lead to e.g. Shift+PgUp not being recognized.
- Add tons of debug output (disabled).
mhopf@suse.de
Index: xorg-server-1.9.3/hw/vnc/kbdptr.c
===================================================================
--- xorg-server-1.9.3.orig/hw/vnc/kbdptr.c
+++ xorg-server-1.9.3/hw/vnc/kbdptr.c
@@ -33,6 +33,8 @@
#define NEED_EVENTS
#include "X11/Xproto.h"
#include "inputstr.h"
+#include "xkbsrv.h"
+#include "xkbstr.h"
#define XK_CYRILLIC
#include <X11/keysym.h>
#include <X11/Xatom.h>
@@ -46,19 +48,17 @@
#endif
#define KEY_IS_PRESSED(keycode) \
- (kbdDevice->key->down[(keycode) >> 3] & (1 << ((keycode) & 7)))
+ (inputInfo.keyboard->key->down[(keycode) >> 3] & (1 << ((keycode) & 7)))
static void vncXConvertCase(KeySym sym, KeySym *lower, KeySym *upper);
-static DeviceIntPtr ptrDevice = NULL, kbdDevice = NULL;
+static DeviceIntPtr ptrDevice = NULL;
void
vncSetKeyboardDevice(DeviceIntPtr kbd)
{
- if (kbdDevice && kbd)
- return; /* set once */
- kbdDevice = kbd;
+ // obsoleted by inputInfo
}
@@ -126,6 +126,29 @@ EnqueueKey(DeviceIntPtr kbdDev, int type
mieqEnqueue(kbdDev, (InternalEvent*)(events + i)->event);
}
+/* In-server and highly changed version of XkbKeycodeToKeysym */
+static KeySym
+_XkbKeycodeToKeysym(XkbDescPtr xkb, KeyCode kc, int group, int level)
+{
+ KeySym ks;
+
+ if ((kc<xkb->min_key_code)||(kc>xkb->max_key_code))
+ return NoSymbol;
+ /* Treat single group elements as present in all groups */
+ if (XkbKeyNumGroups (xkb,kc) == 1)
+ group = 0;
+ if ((group<0)||(level<0)||(group>=XkbKeyNumGroups(xkb,kc)))
+ return NoSymbol;
+ if (level < XkbKeyGroupWidth(xkb, kc, group))
+ ks = XkbKeySymEntry(xkb, kc, level, group);
+ else
+ ks = NoSymbol;
+ /* Treat 'K' as 'K K', */
+ if (ks == NoSymbol && (level & 1) && level-1 < XkbKeyGroupWidth(xkb, kc, group))
+ ks = XkbKeySymEntry(xkb, kc, level-1, group);
+ return ks;
+}
+
/*
* Called when the rfbserver receives a rfbKeyEvent event from a client.
* Put an X keyboard event into the event queue.
@@ -134,21 +157,35 @@ void
KbdAddEvent(Bool down, KeySym keySym, rfbClientPtr cl)
{
const int type = down ? KeyPress : KeyRelease;
- KeySymsPtr keySyms;
- XkbStateRec *xkb;
- int i;
+ XkbSrvInfoPtr xkbInfo;
+ int i, group, level;
int keyCode = 0;
- int freeIndex = -1;
Bool fakeShiftPress = FALSE;
Bool fakeShiftLRelease = FALSE;
Bool fakeShiftRRelease = FALSE;
Bool shiftMustBeReleased = FALSE;
Bool shiftMustBePressed = FALSE;
+ Bool fakeLevel3Press = FALSE;
+ Bool fakeLevel3Release = FALSE;
+ Bool level3MustBeReleased = FALSE;
+ Bool level3MustBePressed = FALSE;
+
+ /* Incomplete maps may create NoSymbol - which lets us
+ * select and/or overwrite otherwise valid entries.
+ * E.g Level3+a in serbian layout creates NoSymbol on os11.4
+ * 2011-05-24 mhopf@suse.de */
+ if (keySym == NoSymbol) {
+ ErrorF("KbdAddEvent: ignoring illegal NoSymbol\n");
+ return;
+ }
- if (!kbdDevice)
- return;
-
- keySyms = XkbGetCoreMap(kbdDevice);
+ xkbInfo = inputInfo.keyboard->key->xkbInfo;
+ group = xkbInfo->state.group;
+ level = (KEY_IS_PRESSED(ISO_LEVEL3_KEY_CODE) ? 2 : 0) |
+ (XkbStateFieldFromRec(&xkbInfo->state) & ShiftMask ? 1 : 0);
+#if 0
+ ErrorF ("VNCkbd:\t%s Sym %04x\n", down ? "+":"-", (int)keySym);
+#endif
#ifdef CORBA
if (cl) {
@@ -166,6 +203,12 @@ KbdAddEvent(Bool down, KeySym keySym, rf
*
* Alan.
*/
+ /* Never use predefined keys.
+ * This is inherently incapable of dealing with changing
+ * keyboard layouts. Not being able to work with non-local xmodmaps
+ * is a nuisance at worst, and probably even preferred.
+ * 2011-04-15 mhopf@suse.de */
+#if 0
#if !XFREE86VNC
/* First check if it's one of our predefined keys. If so then we can make
some attempt at allowing an xmodmap inside a VNC desktop behave
@@ -192,107 +235,229 @@ KbdAddEvent(Bool down, KeySym keySym, rf
}
}
#endif
+#endif
if (!keyCode) {
/* not one of our predefined keys - see if it's in the current keyboard
mapping (i.e. we've already allocated an extra keycode for it) */
- if (keySyms->mapWidth < 2) {
- ErrorF("KbdAddEvent: Sanity check failed - Keyboard mapping has "
- "less than 2 keysyms per keycode (KeySym 0x%x)\n", (int)keySym);
- return;
- }
+ for (keyCode = MIN_KEY_CODE; keyCode < MIN_KEY_CODE + NO_OF_KEYS; keyCode++) {
+ /* Check all keycodes, but only continue on those where
+ * backconversion results in keySym.
+ * 2011-05-20 mhopf@suse.de */
+ int j;
+
+#if 0
+ ErrorF (" keyCode %3d map# %4d++ level %d of %d: keySyms",
+ keyCode, (i / keySyms->mapWidth) * keySyms->mapWidth,
+ i % keySyms->mapWidth, keySyms->mapWidth);
+ for (j = 0; j < keySyms->mapWidth; j++)
+ ErrorF (" %02x", (int)keySyms->map[(i / keySyms->mapWidth) * keySyms->mapWidth + j]);
+ ErrorF ("\n");
+#endif
+#if 0
+ ErrorF (" group %d of %d width %d: keySyms",
+ group, XkbKeyNumGroups(xkbInfo->desc, keyCode),
+ XkbKeyGroupWidth(xkbInfo->desc, keyCode, group));
+ if (XkbKeyNumGroups(xkbInfo->desc, keyCode) > group)
+ for (j = 0; j < XkbKeyGroupWidth(xkbInfo->desc, keyCode, group); j++)
+ ErrorF (" %02x", (int) XkbKeySymEntry(xkbInfo->desc, keyCode, j, group));
+ ErrorF ("\n");
+#endif
- for (i = 0; i < NO_OF_KEYS * keySyms->mapWidth; i++) {
- if (keySym == keySyms->map[i]) {
- keyCode = MIN_KEY_CODE + i / keySyms->mapWidth;
-
- if (keySyms->map[(i / keySyms->mapWidth)
- * keySyms->mapWidth + 1] != NoSymbol) {
-
- /* this keycode has more than one symbol associated with
- it, so shift state is important */
-
- if ((i % keySyms->mapWidth) == 0)
- shiftMustBeReleased = TRUE;
- else
- shiftMustBePressed = TRUE;
- }
+ /* Check whether keySym is reachable in current group
+ * by any shift/Level3_shift state (preferrable w/o change).
+ * This doesn't do real modifyer analysis, only Shift and Level3_Shift.
+ * 2011-05-23 mhopf@suse.de */
+ if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level) == keySym)
+ break;
+ if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 2) == keySym) {
+ if (level & 2)
+ level3MustBeReleased = TRUE;
+ else
+ level3MustBePressed = TRUE;
break;
}
- if ((freeIndex == -1) && (keySyms->map[i] == NoSymbol)
- && (i % keySyms->mapWidth) == 0)
- {
- freeIndex = i;
+ if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 1) == keySym) {
+ if (level & 1)
+ shiftMustBeReleased = TRUE;
+ else
+ shiftMustBePressed = TRUE;
+ break;
+ }
+ if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 3) == keySym) {
+ if (level & 2)
+ level3MustBeReleased = TRUE;
+ else
+ level3MustBePressed = TRUE;
+ if (level & 1)
+ shiftMustBeReleased = TRUE;
+ else
+ shiftMustBePressed = TRUE;
+ break;
}
}
+ if (keyCode == MIN_KEY_CODE + NO_OF_KEYS)
+ keyCode = 0;
}
if (!keyCode) {
KeySym lower, upper;
+ KeySymsPtr keySyms = XkbGetCoreMap(inputInfo.keyboard);
/* we don't have an existing keycode - make one up on the fly and add
it to the keyboard mapping. Thanks to Vlad Harchev for pointing
out problems with non-ascii capitalisation. */
- if (freeIndex == -1) {
+ /* Find free index for current group. */
+ for (keyCode = MIN_KEY_CODE; keyCode < MIN_KEY_CODE + NO_OF_KEYS; keyCode++) {
+ /* A keyCode is free if no groups are assigned at all */
+ if (XkbKeyNumGroups(xkbInfo->desc, keyCode) == 0)
+ break;
+#if 0
+ /* We can use exact map positions for group 1+2, but only partially
+ * filling out xkb legacy maps may suddenly change the # of groups.
+ * Reason for that is unknown yet. Might be related to (fixed) NoSymbol issue.
+ * 2011-05-24 mhopf@suse.de */
+ /* For primary groups: A keyCode is free if current group is empty */
+ if (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 1 && group < 2)
+ break;
+ /* Never touch groups that have a single level only (weird group?!?) */
+ if (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 2)
+ continue;
+ /* For primary groups: A keyCode is free if only NoSymbol is assigned
+ * to available levels (only validating levels 0-3) */
+ if (group < 2 &&
+ XkbKeySymEntry(xkbInfo->desc, keyCode, 0, group) == NoSymbol &&
+ XkbKeySymEntry(xkbInfo->desc, keyCode, 1, group) == NoSymbol &&
+ (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 3 ||
+ (XkbKeySymEntry(xkbInfo->desc, keyCode, 2, group) == NoSymbol &&
+ (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 4 ||
+ XkbKeySymEntry(xkbInfo->desc, keyCode, 3, group) == NoSymbol))))
+ break;
+#endif
+ }
+
+ if (keyCode == MIN_KEY_CODE + NO_OF_KEYS) {
ErrorF("KbdAddEvent: ignoring KeySym 0x%x - no free KeyCodes\n",
(int)keySym);
+ free (keySyms->map);
+ free (keySyms);
return;
}
- keyCode = MIN_KEY_CODE + freeIndex / keySyms->mapWidth;
-
vncXConvertCase(keySym, &lower, &upper);
- if (lower == upper) {
- keySyms->map[freeIndex] = keySym;
-
- } else {
- keySyms->map[freeIndex] = lower;
- keySyms->map[freeIndex+1] = upper;
-
+ /* Adding keys is not using xkb mechanisms yet, but relying on support
+ * for changing keys in the legacy map. Should be changed, eventually.
+ * 2011-05-19 mhopf@suse.de */
+#if 0
+ if (group < 2) {
+ /* Only set mapping for active group. Will only work with dual layouts.
+ * 2011-05-23 mhopf@suse.de */
+ int active_group_offset = group ? 2 : 0;
+
+ if (lower == upper) {
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset] = keySym;
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset + 1] = NoSymbol;
+ } else {
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset] = lower;
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset + 1] = upper;
+ }
+ }
+#endif
+ /* Generic layouts needs to set the full map width.
+ * Weird enough, mapWidth seems too big...
+ * 2011-05-23 mhopf@suse.de */
+ for (i = 0; i < (keySyms->mapWidth & ~1); i += 2) {
+ if (lower == upper) {
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i] = keySym;
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i + 1] = NoSymbol;
+ } else {
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i] = lower;
+ keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i + 1] = upper;
+ }
+ }
+ if (lower != upper) {
if (keySym == lower)
shiftMustBeReleased = TRUE;
else
shiftMustBePressed = TRUE;
}
+ level3MustBeReleased = TRUE;
- XkbApplyMappingChange(kbdDevice, keySyms, keyCode, 1, NULL, serverClient);
+ XkbApplyMappingChange(inputInfo.keyboard, keySyms, keyCode, 1, NULL, serverClient);
ErrorF("KbdAddEvent: unknown KeySym 0x%x - allocating KeyCode %d\n",
(int)keySym, keyCode);
+ free (keySyms->map);
+ free (keySyms);
}
- xkb = &kbdDevice->key->xkbInfo->state;
+#if 0
+ ErrorF ("\t%s Sym %04x Code%3d\tState x%02x %s%s%s\tSh %s%s\tL3 %s%s\n",
+ down ? "+":"-", (int)keySym, keyCode, XkbStateFieldFromRec(&xkbInfo->state),
+ KEY_IS_PRESSED(SHIFT_L_KEY_CODE) ? "Sl":"",
+ KEY_IS_PRESSED(SHIFT_R_KEY_CODE) ? "Sr":"",
+ KEY_IS_PRESSED(ISO_LEVEL3_KEY_CODE) ? "L3":"",
+ shiftMustBePressed ? "+":"", shiftMustBeReleased ? "-":"",
+ level3MustBePressed ? "+":"", level3MustBeReleased ? "-":"");
+#endif
+#if 0
+ int back = _XkbKeycodeToKeysym (xkbInfo->desc, keyCode, group,
+ ((level3MustBePressed || (!level3MustBeReleased && (level & 2))) ? 2 : 0) |
+ ((shiftMustBePressed || (!shiftMustBeReleased && (level & 1))) ? 1 : 0));
+ ErrorF ("\tvalidate code %d %-2s%-2s -> sym %04x %s\n\n", keyCode,
+ (shiftMustBePressed || (!shiftMustBeReleased && (level & 1))) ? "Sh" : "",
+ (level3MustBePressed || (!level3MustBeReleased && (level & 2))) ? "L3" : "",
+ back, (back == keySym ? "ok" : "FAILED"));
+#endif
+
if (down) {
- if (shiftMustBePressed && !(XkbStateFieldFromRec(xkb) & ShiftMask)) {
+ /* TODO: would require to check which keycodes are actually
+ * bound to ISO_Level3_Shift and/or Shift_L.
+ * 2011-04-18 mhopf@suse.de */
+ if (level3MustBePressed && !(level & 2)) {
+ fakeLevel3Press = TRUE;
+ EnqueueKey(inputInfo.keyboard, KeyPress, ISO_LEVEL3_KEY_CODE);
+ }
+ if (level3MustBeReleased && (level & 2)) {
+ fakeLevel3Release = TRUE;
+ EnqueueKey(inputInfo.keyboard, KeyRelease, ISO_LEVEL3_KEY_CODE);
+ }
+ if (shiftMustBePressed && !(level & 1)) {
fakeShiftPress = TRUE;
- EnqueueKey(kbdDevice, KeyPress, SHIFT_L_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_L_KEY_CODE);
}
- if (shiftMustBeReleased && (XkbStateFieldFromRec(xkb) & ShiftMask)) {
+ if (shiftMustBeReleased && (level & 1)) {
if (KEY_IS_PRESSED(SHIFT_L_KEY_CODE)) {
fakeShiftLRelease = TRUE;
- EnqueueKey(kbdDevice, KeyRelease, SHIFT_L_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_L_KEY_CODE);
}
if (KEY_IS_PRESSED(SHIFT_R_KEY_CODE)) {
fakeShiftRRelease = TRUE;
- EnqueueKey(kbdDevice, KeyRelease, SHIFT_R_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_R_KEY_CODE);
}
}
}
- EnqueueKey(kbdDevice, type, keyCode);
+ EnqueueKey(inputInfo.keyboard, type, keyCode);
if (fakeShiftPress) {
- EnqueueKey(kbdDevice, KeyRelease, SHIFT_L_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_L_KEY_CODE);
}
if (fakeShiftLRelease) {
- EnqueueKey(kbdDevice, KeyPress, SHIFT_L_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_L_KEY_CODE);
}
if (fakeShiftRRelease) {
- EnqueueKey(kbdDevice, KeyPress, SHIFT_R_KEY_CODE);
+ EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_R_KEY_CODE);
+ }
+ if (fakeLevel3Press) {
+ EnqueueKey(inputInfo.keyboard, KeyRelease, ISO_LEVEL3_KEY_CODE);
+ }
+ if (fakeLevel3Release) {
+ EnqueueKey(inputInfo.keyboard, KeyPress, ISO_LEVEL3_KEY_CODE);
}
}
@@ -343,15 +508,15 @@ KbdReleaseAllKeys(void)
{
int i, j;
- if (!kbdDevice)
+ if (!inputInfo.keyboard)
return;
for (i = 0; i < DOWN_LENGTH; i++) {
- if (kbdDevice->key->down[i] != 0) {
+ if (inputInfo.keyboard->key->down[i] != 0) {
for (j = 0; j < 8; j++) {
- if (kbdDevice->key->down[i] & (1 << j)) {
+ if (inputInfo.keyboard->key->down[i] & (1 << j)) {
int detail = (i << 3) | j;
- EnqueueKey(kbdDevice, KeyRelease, detail);
+ EnqueueKey(inputInfo.keyboard, KeyRelease, detail);
}
}
}
Index: xorg-server-1.9.3/hw/vnc/keyboard.h
===================================================================
--- xorg-server-1.9.3.orig/hw/vnc/keyboard.h
+++ xorg-server-1.9.3/hw/vnc/keyboard.h
@@ -32,6 +32,7 @@
#define META_R_KEY_CODE (MIN_KEY_CODE + 108)
#define ALT_L_KEY_CODE (MIN_KEY_CODE + 56)
#define ALT_R_KEY_CODE (MIN_KEY_CODE + 105)
+#define ISO_LEVEL3_KEY_CODE ALT_R_KEY_CODE
static KeySym map[MAX_KEY_CODE * GLYPHS_PER_KEY] = {
/* 0x00 */ NoSymbol, NoSymbol, NoSymbol, NoSymbol,
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