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element: Add some more sanity checks to the pad name checking of request pads in all cases

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Especially check if a pad with that name already exists.
This commit is contained in:
Sebastian Dröge 2011-03-29 11:57:58 +02:00
parent c9238f6f56
commit cb3f09a719
1 changed files with 45 additions and 0 deletions
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45
gst/gstelement.c
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@ -982,6 +982,51 @@ _gst_element_request_pad (GstElement * element, GstPadTemplate * templ,
oclass = GST_ELEMENT_GET_CLASS (element);
#ifndef G_DISABLE_CHECKS
/* Some sanity checking here */
if (name) {
GstPad *pad;
/* Is this the template name? */
if (strstr (name, "%")) {
g_return_val_if_fail (strcmp (name, templ->name_template) == 0, NULL);
} else {
const gchar *str, *data;
gchar *endptr;
/* Otherwise check if it's a valid name for the name template */
str = strchr (templ->name_template, '%');
g_return_val_if_fail (str != NULL, NULL);
g_return_val_if_fail (strncmp (templ->name_template, name,
str - templ->name_template) == 0, NULL);
g_return_val_if_fail (strlen (name) > str - templ->name_template, NULL);
data = name + (str - templ->name_template);
/* Can either be %s or %d or %u, do sanity checking for %d */
if (*(str + 1) == 'd') {
gint tmp;
/* it's an int */
tmp = strtol (data, &endptr, 10);
g_return_val_if_fail (tmp != G_MINLONG && tmp != G_MAXLONG
&& *endptr == '\0', NULL);
} else if (*(str + 1) == 'u') {
guint tmp;
/* it's an int */
tmp = strtoul (data, &endptr, 10);
g_return_val_if_fail (tmp != G_MAXULONG && *endptr == '\0', NULL);
}
}
pad = gst_element_get_static_pad (element, name);
if (pad)
gst_object_unref (pad);
g_return_val_if_fail (pad == NULL, NULL);
}
#endif
if (oclass->request_new_pad_full)
newpad = (oclass->request_new_pad_full) (element, templ, name, caps);
else if (oclass->request_new_pad)