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Cope with non-null-terminated x class properties. 

- fixes #1605
This commit is contained in:
Michael Hofmann 2015-03-29 15:15:12 +02:00
parent e6267a684c
commit eb84281f8c
1 changed files with 7 additions and 2 deletions
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9
src/window.c
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@ -26,13 +26,16 @@ void window_update_class(i3Window *win, xcb_get_property_reply_t *prop, bool bef
/* We cannot use asprintf here since this property contains two /* We cannot use asprintf here since this property contains two
* null-terminated strings (for compatibility reasons). Instead, we * null-terminated strings (for compatibility reasons). Instead, we
* use strdup() on both strings */ * use strdup() on both strings */
char *new_class = xcb_get_property_value(prop); const size_t prop_length = xcb_get_property_value_length(prop);
char *new_class = smalloc(prop_length + 1);
memcpy(new_class, xcb_get_property_value(prop), prop_length);
new_class[prop_length] = '\0';
FREE(win->class_instance); FREE(win->class_instance);
FREE(win->class_class); FREE(win->class_class);
win->class_instance = sstrdup(new_class); win->class_instance = sstrdup(new_class);
if ((strlen(new_class) + 1) < (size_t)xcb_get_property_value_length(prop)) if ((strlen(new_class) + 1) < prop_length)
win->class_class = sstrdup(new_class + strlen(new_class) + 1); win->class_class = sstrdup(new_class + strlen(new_class) + 1);
else else
win->class_class = NULL; win->class_class = NULL;
@ -40,12 +43,14 @@ void window_update_class(i3Window *win, xcb_get_property_reply_t *prop, bool bef
win->class_instance, win->class_class); win->class_instance, win->class_class);
if (before_mgmt) { if (before_mgmt) {
free(new_class);
free(prop); free(prop);
return; return;
} }
run_assignments(win); run_assignments(win);
free(new_class);
free(prop); free(prop);
} }