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ecore-x: add safety checks for _ecore_x_disp in some functions 

xlib immediately crashes upon being passed a null DISPLAY object,
so every function in ecore-x should likely have safety checks such as
these. an easy project for anyone who has some free time

@fix
This commit is contained in:
Mike Blumenkrantz 2016-01-18 17:17:34 -05:00
parent 23cceeeaaa
commit 210b3e6c62
1 changed files with 23 additions and 0 deletions
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23
src/lib/ecore_x/xlib/ecore_x.c
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@ -1227,6 +1227,7 @@ ecore_x_window_root_list(int *num_ret)
*num_ret = 0;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, NULL);
num = ScreenCount(_ecore_x_disp);
roots = malloc(num * sizeof(Ecore_X_Window));
if (!roots)
@ -1241,6 +1242,7 @@ ecore_x_window_root_list(int *num_ret)
EAPI Ecore_X_Window
ecore_x_window_root_first_get(void)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, 0);
return RootWindow(_ecore_x_disp, 0);
/*
int num;
@ -1277,6 +1279,7 @@ ecore_x_window_manage(Ecore_X_Window win)
XWindowAttributes att;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
if (XGetWindowAttributes(_ecore_x_disp, win, &att) != True)
return EINA_FALSE;
@ -1309,6 +1312,7 @@ EAPI void
ecore_x_window_container_manage(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XSelectInput(_ecore_x_disp, win,
SubstructureRedirectMask |
SubstructureNotifyMask);
@ -1319,6 +1323,7 @@ EAPI void
ecore_x_window_client_manage(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XSelectInput(_ecore_x_disp, win,
PropertyChangeMask |
// ResizeRedirectMask |
@ -1337,6 +1342,7 @@ EAPI void
ecore_x_window_sniff(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XSelectInput(_ecore_x_disp, win,
PropertyChangeMask |
SubstructureNotifyMask);
@ -1347,6 +1353,7 @@ EAPI void
ecore_x_window_client_sniff(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XSelectInput(_ecore_x_disp, win,
PropertyChangeMask |
FocusChangeMask |
@ -1367,6 +1374,7 @@ ecore_x_window_attributes_get(Ecore_X_Window win,
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = XGetWindowAttributes(_ecore_x_disp, win, &att);
if (_ecore_xlib_sync) ecore_x_sync();
if (!ret) return EINA_FALSE;
@ -1408,6 +1416,7 @@ EAPI void
ecore_x_window_save_set_add(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XAddToSaveSet(_ecore_x_disp, win);
if (_ecore_xlib_sync) ecore_x_sync();
}
@ -1416,6 +1425,7 @@ EAPI void
ecore_x_window_save_set_del(Ecore_X_Window win)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XRemoveFromSaveSet(_ecore_x_disp, win);
if (_ecore_xlib_sync) ecore_x_sync();
}
@ -1430,6 +1440,7 @@ ecore_x_window_children_get(Ecore_X_Window win,
unsigned int children_ret_num = 0;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, NULL);
success = XQueryTree(_ecore_x_disp, win, &root_ret, &parent_ret, &children_ret,
&children_ret_num);
if (_ecore_xlib_sync) ecore_x_sync();
@ -1460,6 +1471,7 @@ ecore_x_pointer_control_set(int accel_num,
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = !!XChangePointerControl(_ecore_x_disp, 1, 1,
accel_num, accel_denom, threshold);
if (_ecore_xlib_sync) ecore_x_sync();
@ -1473,6 +1485,7 @@ ecore_x_pointer_control_get(int *accel_num,
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = !!XGetPointerControl(_ecore_x_disp,
accel_num, accel_denom, threshold);
if (_ecore_xlib_sync) ecore_x_sync();
@ -1485,6 +1498,7 @@ ecore_x_pointer_mapping_set(unsigned char *map,
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = (XSetPointerMapping(_ecore_x_disp, map, nmap) == MappingSuccess);
if (_ecore_xlib_sync) ecore_x_sync();
return ret;
@ -1496,6 +1510,7 @@ ecore_x_pointer_mapping_get(unsigned char *map,
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = !!XGetPointerMapping(_ecore_x_disp, map, nmap);
if (_ecore_xlib_sync) ecore_x_sync();
return ret;
@ -1506,6 +1521,7 @@ ecore_x_pointer_grab(Ecore_X_Window win)
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = (XGrabPointer(_ecore_x_disp, win, False,
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask | PointerMotionMask,
@ -1520,6 +1536,7 @@ ecore_x_pointer_confine_grab(Ecore_X_Window win)
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = (XGrabPointer(_ecore_x_disp, win, False,
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask | PointerMotionMask,
@ -1533,6 +1550,7 @@ EAPI void
ecore_x_pointer_ungrab(void)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XUngrabPointer(_ecore_x_disp, CurrentTime);
if (_ecore_xlib_sync) ecore_x_sync();
}
@ -1544,6 +1562,7 @@ ecore_x_pointer_warp(Ecore_X_Window win,
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = !!XWarpPointer(_ecore_x_disp, None, win, 0, 0, 0, 0, x, y);
if (_ecore_xlib_sync) ecore_x_sync();
return ret;
@ -1554,6 +1573,7 @@ ecore_x_keyboard_grab(Ecore_X_Window win)
{
Eina_Bool ret;
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN_VAL(_ecore_x_disp, EINA_FALSE);
ret = (XGrabKeyboard(_ecore_x_disp, win, False,
GrabModeAsync, GrabModeAsync,
CurrentTime) == GrabSuccess);
@ -1565,6 +1585,7 @@ EAPI void
ecore_x_keyboard_ungrab(void)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
XUngrabKeyboard(_ecore_x_disp, CurrentTime);
}
@ -1572,6 +1593,7 @@ EAPI void
ecore_x_grab(void)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
_ecore_x_grab_count++;
if (_ecore_x_grab_count == 1)
XGrabServer(_ecore_x_disp);
@ -1581,6 +1603,7 @@ EAPI void
ecore_x_ungrab(void)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
EINA_SAFETY_ON_NULL_RETURN(_ecore_x_disp);
_ecore_x_grab_count--;
if (_ecore_x_grab_count < 0)
_ecore_x_grab_count = 0;