fdedbe2676
This adds in4_addr_is_localhost() and in4_addr_is_link_local() that only take an IPv4 "struct in_addr", to match in_addr_is_localhost() and in_addr_is_link_local() that that a "union in_addr_union". This matches the existing in4_addr_is_null() call that already exists. For IPv6 glibc already exports a set of macros, hence we don't add similar functions in6_addr_is_localhost(). We also drop in6_addr_is_null() as IN6_IS_ADDR_UNSPECIFIED() already provides that.
68 lines
2.7 KiB
C
68 lines
2.7 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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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 License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <netinet/in.h>
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#include <stddef.h>
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#include <sys/socket.h>
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#include "macro.h"
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#include "util.h"
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union in_addr_union {
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struct in_addr in;
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struct in6_addr in6;
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};
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struct in_addr_data {
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int family;
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union in_addr_union address;
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};
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bool in4_addr_is_null(const struct in_addr *a);
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int in_addr_is_null(int family, const union in_addr_union *u);
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bool in4_addr_is_link_local(const struct in_addr *a);
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int in_addr_is_link_local(int family, const union in_addr_union *u);
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bool in4_addr_is_localhost(const struct in_addr *a);
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int in_addr_is_localhost(int family, const union in_addr_union *u);
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int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b);
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int in_addr_prefix_intersect(int family, const union in_addr_union *a, unsigned aprefixlen, const union in_addr_union *b, unsigned bprefixlen);
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int in_addr_prefix_next(int family, union in_addr_union *u, unsigned prefixlen);
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int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
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int in_addr_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, char **ret);
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int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
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int in_addr_from_string_auto(const char *s, int *family, union in_addr_union *ret);
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int in_addr_ifindex_from_string_auto(const char *s, int *family, union in_addr_union *ret, int *ifindex);
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unsigned char in_addr_netmask_to_prefixlen(const struct in_addr *addr);
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struct in_addr* in_addr_prefixlen_to_netmask(struct in_addr *addr, unsigned char prefixlen);
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int in_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen);
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int in_addr_default_subnet_mask(const struct in_addr *addr, struct in_addr *mask);
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int in_addr_mask(int family, union in_addr_union *addr, unsigned char prefixlen);
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static inline size_t FAMILY_ADDRESS_SIZE(int family) {
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assert(family == AF_INET || family == AF_INET6);
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return family == AF_INET6 ? 16 : 4;
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}
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#define IN_ADDR_NULL ((union in_addr_union) {})
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