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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:49:30 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:49:30 +0000 |
commit | e14d51045326808a48d43d7e0b45860cd33e2b17 (patch) | |
tree | 90b47e500bf7b1ccffae92fc2105cea5b8b7b61f /inet/inet6_scopeid_pton.c | |
parent | c949e9c224c0fc890982cc42797ae868b04faa00 (diff) | |
parent | 963c37d5c0eb62b38f8764b23931c0dcdd497a13 (diff) |
Merge commit 'refs/top-bases/t/context_functions' into t/context_functions
Diffstat (limited to 'inet/inet6_scopeid_pton.c')
-rw-r--r-- | inet/inet6_scopeid_pton.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/inet/inet6_scopeid_pton.c b/inet/inet6_scopeid_pton.c new file mode 100644 index 0000000000..b3c58e73de --- /dev/null +++ b/inet/inet6_scopeid_pton.c @@ -0,0 +1,64 @@ +/* Convert an IPv6 scope ID from text to the internal representation. + Copyright (C) 2016-2018 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 + <http://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, + _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) |