Branch data Line data Source code
1 : : /* SPDX-License-Identifier: LGPL-2.1+ */
2 : : #pragma once
3 : :
4 : : #include <netinet/in.h>
5 : : #include <stddef.h>
6 : : #include <sys/socket.h>
7 : :
8 : : #include "hash-funcs.h"
9 : : #include "macro.h"
10 : : #include "util.h"
11 : :
12 : : union in_addr_union {
13 : : struct in_addr in;
14 : : struct in6_addr in6;
15 : : };
16 : :
17 : : struct in_addr_data {
18 : : int family;
19 : : union in_addr_union address;
20 : : };
21 : :
22 : : bool in4_addr_is_null(const struct in_addr *a);
23 : : int in_addr_is_null(int family, const union in_addr_union *u);
24 : :
25 : : int in_addr_is_multicast(int family, const union in_addr_union *u);
26 : :
27 : : bool in4_addr_is_link_local(const struct in_addr *a);
28 : : int in_addr_is_link_local(int family, const union in_addr_union *u);
29 : :
30 : : bool in4_addr_is_localhost(const struct in_addr *a);
31 : : int in_addr_is_localhost(int family, const union in_addr_union *u);
32 : :
33 : : bool in4_addr_is_non_local(const struct in_addr *a);
34 : :
35 : : bool in4_addr_equal(const struct in_addr *a, const struct in_addr *b);
36 : : int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b);
37 : : int in_addr_prefix_intersect(int family, const union in_addr_union *a, unsigned aprefixlen, const union in_addr_union *b, unsigned bprefixlen);
38 : : int in_addr_prefix_next(int family, union in_addr_union *u, unsigned prefixlen);
39 : : int in_addr_random_prefix(int family, union in_addr_union *u, unsigned prefixlen_fixed_part, unsigned prefixlen);
40 : : int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
41 : : int in_addr_prefix_to_string(int family, const union in_addr_union *u, unsigned prefixlen, char **ret);
42 : : int in_addr_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, char **ret);
43 : : int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
44 : : int in_addr_from_string_auto(const char *s, int *ret_family, union in_addr_union *ret);
45 : : int in_addr_ifindex_from_string_auto(const char *s, int *family, union in_addr_union *ret, int *ifindex);
46 : : unsigned char in4_addr_netmask_to_prefixlen(const struct in_addr *addr);
47 : : struct in_addr* in4_addr_prefixlen_to_netmask(struct in_addr *addr, unsigned char prefixlen);
48 : : int in4_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen);
49 : : int in4_addr_default_subnet_mask(const struct in_addr *addr, struct in_addr *mask);
50 : : int in_addr_mask(int family, union in_addr_union *addr, unsigned char prefixlen);
51 : : int in_addr_prefix_covers(int family, const union in_addr_union *prefix, unsigned char prefixlen, const union in_addr_union *address);
52 : : int in_addr_parse_prefixlen(int family, const char *p, unsigned char *ret);
53 : : int in_addr_prefix_from_string(const char *p, int family, union in_addr_union *ret_prefix, unsigned char *ret_prefixlen);
54 : :
55 : : typedef enum InAddrPrefixLenMode {
56 : : PREFIXLEN_FULL, /* Default to prefixlen of address size, 32 for IPv4 or 128 for IPv6, if not specified. */
57 : : PREFIXLEN_REFUSE, /* Fail with -ENOANO if prefixlen is not specified. */
58 : : PREFIXLEN_LEGACY, /* Default to legacy default prefixlen calculation from address if not specified. */
59 : : } InAddrPrefixLenMode;
60 : :
61 : : int in_addr_prefix_from_string_auto_internal(const char *p, InAddrPrefixLenMode mode, int *ret_family, union in_addr_union *ret_prefix, unsigned char *ret_prefixlen);
62 : 116 : static inline int in_addr_prefix_from_string_auto(const char *p, int *ret_family, union in_addr_union *ret_prefix, unsigned char *ret_prefixlen) {
63 : 116 : return in_addr_prefix_from_string_auto_internal(p, PREFIXLEN_FULL, ret_family, ret_prefix, ret_prefixlen);
64 : : }
65 : :
66 : 1064 : static inline size_t FAMILY_ADDRESS_SIZE(int family) {
67 [ + - - + ]: 1064 : assert(IN_SET(family, AF_INET, AF_INET6));
68 [ + + ]: 1064 : return family == AF_INET6 ? 16 : 4;
69 : : }
70 : :
71 : : /* Workaround for clang, explicitly specify the maximum-size element here.
72 : : * See also oss-fuzz#11344. */
73 : : #define IN_ADDR_NULL ((union in_addr_union) { .in6 = {} })
74 : :
75 : : extern const struct hash_ops in_addr_data_hash_ops;
76 : : extern const struct hash_ops in6_addr_hash_ops;
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