1 | /* Convert an IPv6 scope ID from text to the internal representation. |
2 | Copyright (C) 2016-2017 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <net-internal.h> |
20 | |
21 | #include <ctype.h> |
22 | #include <errno.h> |
23 | #include <locale.h> |
24 | #include <net/if.h> |
25 | #include <stdbool.h> |
26 | #include <stdint.h> |
27 | #include <stdlib.h> |
28 | |
29 | /* Parse SOURCE as a scope ID for ADDRESS. Return 0 on success and -1 |
30 | on error. */ |
31 | internal_function int |
32 | __inet6_scopeid_pton (const struct in6_addr *address, const char *scope, |
33 | uint32_t *result) |
34 | { |
35 | if (IN6_IS_ADDR_LINKLOCAL (address) |
36 | || IN6_IS_ADDR_MC_LINKLOCAL (address)) |
37 | { |
38 | uint32_t number = __if_nametoindex (scope); |
39 | if (number != 0) |
40 | { |
41 | *result = number; |
42 | return 0; |
43 | } |
44 | } |
45 | |
46 | if (isdigit_l (scope[0], _nl_C_locobj_ptr)) |
47 | { |
48 | char *end; |
49 | unsigned long long number |
50 | = ____strtoull_l_internal (scope, &end, /*base */ 10, /* group */ 0, |
51 | _nl_C_locobj_ptr); |
52 | if (*end == '\0' && number <= UINT32_MAX) |
53 | { |
54 | *result = number; |
55 | return 0; |
56 | } |
57 | } |
58 | |
59 | __set_errno (EINVAL); |
60 | return -1; |
61 | } |
62 | |
63 | libc_hidden_def (__inet6_scopeid_pton) |
64 | |