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-rw-r--r--src/libbasic/in-addr-util.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/libbasic/in-addr-util.h b/src/libbasic/in-addr-util.h
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+++ b/src/libbasic/in-addr-util.h
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+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd 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.
+
+ systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/in.h>
+#include <stddef.h>
+#include <sys/socket.h>
+
+#include "macro.h"
+#include "util.h"
+
+union in_addr_union {
+ struct in_addr in;
+ struct in6_addr in6;
+};
+
+struct in_addr_data {
+ int family;
+ union in_addr_union address;
+};
+
+int in_addr_is_null(int family, const union in_addr_union *u);
+int in_addr_is_link_local(int family, const union in_addr_union *u);
+int in_addr_is_localhost(int family, const union in_addr_union *u);
+int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b);
+int in_addr_prefix_intersect(int family, const union in_addr_union *a, unsigned aprefixlen, const union in_addr_union *b, unsigned bprefixlen);
+int in_addr_prefix_next(int family, union in_addr_union *u, unsigned prefixlen);
+int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
+int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
+int in_addr_from_string_auto(const char *s, int *family, union in_addr_union *ret);
+unsigned char in_addr_netmask_to_prefixlen(const struct in_addr *addr);
+struct in_addr* in_addr_prefixlen_to_netmask(struct in_addr *addr, unsigned char prefixlen);
+int in_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen);
+int in_addr_default_subnet_mask(const struct in_addr *addr, struct in_addr *mask);
+int in_addr_mask(int family, union in_addr_union *addr, unsigned char prefixlen);
+
+static inline size_t FAMILY_ADDRESS_SIZE(int family) {
+ assert(family == AF_INET || family == AF_INET6);
+ return family == AF_INET6 ? 16 : 4;
+}
+
+#define IN_ADDR_NULL ((union in_addr_union) {})