xwayland: Check return of xcb_get_property_reply() before deref

The man pages indicate this routine can return NULL on certain error
conditions.

Suggested by Marek Chalupa

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
dev
Bryce Harrington 10 years ago
parent cf7d95a688
commit b2d79d504e
  1. 6
      xwayland/selection.c

@ -111,6 +111,8 @@ weston_wm_get_incr_chunk(struct weston_wm *wm)
0x1fffffff /* length */);
reply = xcb_get_property_reply(wm->conn, cookie, NULL);
if (reply == NULL)
return;
dump_property(wm, wm->atom.wl_selection, reply);
@ -184,6 +186,8 @@ weston_wm_get_selection_targets(struct weston_wm *wm)
4096 /* length */);
reply = xcb_get_property_reply(wm->conn, cookie, NULL);
if (reply == NULL)
return;
dump_property(wm, wm->atom.wl_selection, reply);
@ -236,6 +240,8 @@ weston_wm_get_selection_data(struct weston_wm *wm)
0x1fffffff /* length */);
reply = xcb_get_property_reply(wm->conn, cookie, NULL);
if (reply == NULL)
return;
if (reply->type == wm->atom.incr) {
dump_property(wm, wm->atom.wl_selection, reply);

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