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xprops: Use g_strdup in class_hint_from_results()

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Use g_strdup instead of malloc + strcpy, this also gets rid of a bunch
of error checking which is no longer necessary, also adjust the free
path accordingly.

Note that there was a malloc + XFree mismatch in the removed error-handling.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/786
This commit is contained in:
Hans de Goede 2019-09-09 11:28:00 +02:00 committed by Jonas Ådahl
parent eb8a1f42bc
commit e153524748
1 changed files with 8 additions and 26 deletions
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34
src/x11/xprops.c
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@ -727,7 +727,7 @@ static gboolean
class_hint_from_results (GetPropertyResults *results,
XClassHint *class_hint)
{
int len_name, len_class;
int len_name;
class_hint->res_class = NULL;
class_hint->res_name = NULL;
@ -735,31 +735,13 @@ class_hint_from_results (GetPropertyResults *results,
if (!validate_or_free_results (results, 8, XA_STRING, FALSE))
return FALSE;
len_name = strlen ((char *) results->prop);
if (! (class_hint->res_name = malloc (len_name+1)))
{
g_free (results->prop);
results->prop = NULL;
return FALSE;
}
strcpy (class_hint->res_name, (char *)results->prop);
class_hint->res_name = g_strdup ((char *) results->prop);
len_name = strlen (class_hint->res_name);
if (len_name == (int) results->n_items)
len_name--;
len_class = strlen ((char *)results->prop + len_name + 1);
if (! (class_hint->res_class = malloc(len_class+1)))
{
XFree(class_hint->res_name);
class_hint->res_name = NULL;
g_free (results->prop);
results->prop = NULL;
return FALSE;
}
strcpy (class_hint->res_class, (char *)results->prop + len_name + 1);
class_hint->res_class = g_strdup ("");
else
class_hint->res_class = g_strdup ((char *) results->prop + len_name + 1);
g_free (results->prop);
results->prop = NULL;
@ -1092,8 +1074,8 @@ free_value (MetaPropValue *value)
g_free (value->v.wm_hints);
break;
case META_PROP_VALUE_CLASS_HINT:
free (value->v.class_hint.res_class);
free (value->v.class_hint.res_name);
g_free (value->v.class_hint.res_class);
g_free (value->v.class_hint.res_name);
break;
case META_PROP_VALUE_SIZE_HINTS:
free (value->v.size_hints.hints);