65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Convert an IPv6 scope ID from text to the internal representation.
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Copyright (C) 2016-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <net-internal.h>
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#include <ctype.h>
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#include <errno.h>
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#include <locale.h>
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#include <net/if.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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/* Parse SOURCE as a scope ID for ADDRESS. Return 0 on success and -1
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on error. */
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int
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__inet6_scopeid_pton (const struct in6_addr *address, const char *scope,
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uint32_t *result)
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{
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if (IN6_IS_ADDR_LINKLOCAL (address)
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|| IN6_IS_ADDR_MC_NODELOCAL (address)
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|| IN6_IS_ADDR_MC_LINKLOCAL (address))
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{
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uint32_t number = __if_nametoindex (scope);
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if (number != 0)
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{
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*result = number;
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return 0;
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}
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}
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if (isdigit_l (scope[0], _nl_C_locobj_ptr))
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{
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char *end;
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unsigned long long number
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= ____strtoull_l_internal (scope, &end, /*base */ 10, /* group */ 0,
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_nl_C_locobj_ptr);
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if (*end == '\0' && number <= UINT32_MAX)
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{
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*result = number;
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return 0;
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}
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}
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__set_errno (EINVAL);
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return -1;
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}
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libc_hidden_def (__inet6_scopeid_pton)
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