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Dix: Cleaned up sanity checking in Get{Pointer,Keyboard}Events

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XQuartz was crashing because the Appkit thread was trying to GetXXXEvents while the Xserver thread was exiting.
This adds some more sanity checks and avoids that crash
(cherry picked from commit 34ec4bd6ac)
This commit is contained in:
Jeremy Huddleston 2008-04-30 17:30:32 -07:00
parent ce36ae526d
commit 28d1e21f15
1 changed files with 9 additions and 3 deletions
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12
dix/getevents.c
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@ -407,8 +407,8 @@ GetKeyboardValuatorEvents(xEvent *events, DeviceIntPtr pDev, int type,
int num_valuators, int *valuators) {
int numEvents = 0;
CARD32 ms = 0;
KeySym *map = pDev->key->curKeySyms.map;
KeySym sym = map[key_code * pDev->key->curKeySyms.mapWidth];
KeySym *map;
KeySym sym;
deviceKeyButtonPointer *kbp = NULL;
if (!events)
@ -419,11 +419,14 @@ GetKeyboardValuatorEvents(xEvent *events, DeviceIntPtr pDev, int type,
return 0;
if (!pDev->key || !pDev->focus || !pDev->kbdfeed ||
(pDev->coreEvents && !inputInfo.keyboard->key))
(pDev->coreEvents && !(inputInfo.keyboard && inputInfo.keyboard->key)))
return 0;
if (key_code < 8 || key_code > 255)
return 0;
map = pDev->key->curKeySyms.map;
sym = map[key_code * pDev->key->curKeySyms.mapWidth];
if (pDev->coreEvents)
numEvents = 2;
@ -539,6 +542,9 @@ GetPointerEvents(xEvent *events, DeviceIntPtr pDev, int type, int buttons,
if ((type == ButtonPress || type == ButtonRelease) && !pDev->button)
return 0;
if(pDev->coreEvents && !cp)
return 0;
/* FIXME: I guess it should, in theory, be possible to post button events
* from devices without valuators. */