utils: make nm_utils_hwaddr_matches() accept NULL

This essentially aligns the implementation with the documentation.

It is also rather useful, since it allows us to use the value returned
by nm_setting_wired_get_mac_address() directly, and that one can indeed
be NULL.
This commit is contained in:
Lubomir Rintel 2019-11-14 15:08:31 +01:00
parent e1a068e93c
commit 62919bab43
2 changed files with 19 additions and 8 deletions

View file

@ -4276,14 +4276,15 @@ nm_utils_hwaddr_matches (gconstpointer hwaddr1,
gsize l;
if (hwaddr1_len == -1) {
g_return_val_if_fail (hwaddr1 != NULL, FALSE);
if (!hwaddr_aton (hwaddr1, buf1, sizeof (buf1), &l)) {
if (hwaddr1 == NULL) {
hwaddr1_len = 0;
} else if (hwaddr_aton (hwaddr1, buf1, sizeof (buf1), &l)) {
hwaddr1 = buf1;
hwaddr1_len = l;
} else {
g_return_val_if_fail ((hwaddr2_len == -1 && hwaddr2) || (hwaddr2_len > 0 && hwaddr2_len <= NM_UTILS_HWADDR_LEN_MAX), FALSE);
return FALSE;
}
hwaddr1 = buf1;
hwaddr1_len = l;
} else {
g_return_val_if_fail (hwaddr1_len > 0 && hwaddr1_len <= NM_UTILS_HWADDR_LEN_MAX, FALSE);
@ -4294,9 +4295,9 @@ nm_utils_hwaddr_matches (gconstpointer hwaddr1,
}
if (hwaddr2_len == -1) {
g_return_val_if_fail (hwaddr2 != NULL, FALSE);
if (!hwaddr_aton (hwaddr2, buf2, sizeof (buf2), &l))
if (hwaddr2 == NULL)
l = 0;
else if (!hwaddr_aton (hwaddr2, buf2, sizeof (buf2), &l))
return FALSE;
if (l != hwaddr1_len)
return FALSE;

View file

@ -3950,6 +3950,16 @@ test_hwaddr_equal (void)
g_assert (nm_utils_hwaddr_matches (null_binary, sizeof (null_binary), null_string, -1));
g_assert (nm_utils_hwaddr_matches (null_binary, sizeof (null_binary), null_binary, sizeof (null_binary)));
g_assert (nm_utils_hwaddr_matches (null_binary, sizeof (null_binary), NULL, ETH_ALEN));
g_assert (nm_utils_hwaddr_matches (NULL, -1, NULL, -1));
g_assert (!nm_utils_hwaddr_matches (NULL, -1, string, -1));
g_assert (!nm_utils_hwaddr_matches (string, -1, NULL, -1));
g_assert (!nm_utils_hwaddr_matches (NULL, -1, null_string, -1));
g_assert (!nm_utils_hwaddr_matches (null_string, -1, NULL, -1));
g_assert (!nm_utils_hwaddr_matches (NULL, -1, binary, sizeof (binary)));
g_assert (!nm_utils_hwaddr_matches (binary, sizeof (binary), NULL, -1));
g_assert (!nm_utils_hwaddr_matches (NULL, -1, null_binary, sizeof (null_binary)));
g_assert (!nm_utils_hwaddr_matches (null_binary, sizeof (null_binary), NULL, -1));
}
static void