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/* Convert an IPv6 scope ID from text to the internal representation.
Copyright (C) 2016-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <net-internal.h>
#include <ctype.h>
#include <errno.h>
#include <locale.h>
#include <net/if.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
/* Parse SOURCE as a scope ID for ADDRESS. Return 0 on success and -1
on error. */
int
__inet6_scopeid_pton (const struct in6_addr *address, const char *scope,
uint32_t *result)
{
if (IN6_IS_ADDR_LINKLOCAL (address)
|| IN6_IS_ADDR_MC_NODELOCAL (address)
|| IN6_IS_ADDR_MC_LINKLOCAL (address))
{
uint32_t number = __if_nametoindex (scope);
if (number != 0)
{
*result = number;
return 0;
}
}
if (isdigit_l (scope[0], _nl_C_locobj_ptr))
{
char *end;
unsigned long long number
= ____strtoull_l_internal (scope, &end, /*base */ 10, /* group */ 0,
/* bin_cst */ false, _nl_C_locobj_ptr);
if (*end == '\0' && number <= UINT32_MAX)
{
*result = number;
return 0;
}
}
__set_errno (EINVAL);
return -1;
}
libc_hidden_def (__inet6_scopeid_pton)
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