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-rw-r--r--inet/inet6_scopeid_pton.c64
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)