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80d8cb91 | 1 | /* Convert an IPv6 scope ID from text to the internal representation. |
581c785b | 2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
80d8cb91 FW |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
80d8cb91 FW |
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. */ | |
f87cc2bf | 31 | int |
80d8cb91 FW |
32 | __inet6_scopeid_pton (const struct in6_addr *address, const char *scope, |
33 | uint32_t *result) | |
34 | { | |
35 | if (IN6_IS_ADDR_LINKLOCAL (address) | |
f768b450 | 36 | || IN6_IS_ADDR_MC_NODELOCAL (address) |
80d8cb91 FW |
37 | || IN6_IS_ADDR_MC_LINKLOCAL (address)) |
38 | { | |
39 | uint32_t number = __if_nametoindex (scope); | |
40 | if (number != 0) | |
41 | { | |
42 | *result = number; | |
43 | return 0; | |
44 | } | |
45 | } | |
46 | ||
47 | if (isdigit_l (scope[0], _nl_C_locobj_ptr)) | |
48 | { | |
49 | char *end; | |
50 | unsigned long long number | |
51 | = ____strtoull_l_internal (scope, &end, /*base */ 10, /* group */ 0, | |
52 | _nl_C_locobj_ptr); | |
53 | if (*end == '\0' && number <= UINT32_MAX) | |
54 | { | |
55 | *result = number; | |
56 | return 0; | |
57 | } | |
58 | } | |
59 | ||
60 | __set_errno (EINVAL); | |
61 | return -1; | |
62 | } | |
63 | ||
64 | libc_hidden_def (__inet6_scopeid_pton) |