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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
commit | 19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch) | |
tree | d59b9989ce55ed23693e80974d94c856f1c2c8b1 /src/basic/in-addr-util.h | |
parent | Initial commit. (diff) | |
download | systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip |
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/basic/in-addr-util.h')
-rw-r--r-- | src/basic/in-addr-util.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/basic/in-addr-util.h b/src/basic/in-addr-util.h new file mode 100644 index 0000000..3069790 --- /dev/null +++ b/src/basic/in-addr-util.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#pragma once + +#include <netinet/in.h> +#include <stddef.h> +#include <sys/socket.h> + +#include "hash-funcs.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; +}; + +bool in4_addr_is_null(const struct in_addr *a); +int in_addr_is_null(int family, const union in_addr_union *u); + +int in_addr_is_multicast(int family, const union in_addr_union *u); + +bool in4_addr_is_link_local(const struct in_addr *a); +int in_addr_is_link_local(int family, const union in_addr_union *u); + +bool in4_addr_is_localhost(const struct in_addr *a); +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_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, 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 *ret_family, union in_addr_union *ret); +int in_addr_ifindex_from_string_auto(const char *s, int *family, union in_addr_union *ret, int *ifindex); +unsigned char in4_addr_netmask_to_prefixlen(const struct in_addr *addr); +struct in_addr* in4_addr_prefixlen_to_netmask(struct in_addr *addr, unsigned char prefixlen); +int in4_addr_default_prefixlen(const struct in_addr *addr, unsigned char *prefixlen); +int in4_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); +int in_addr_prefix_covers(int family, const union in_addr_union *prefix, unsigned char prefixlen, const union in_addr_union *address); +int in_addr_parse_prefixlen(int family, const char *p, unsigned char *ret); +int in_addr_prefix_from_string(const char *p, int family, union in_addr_union *ret_prefix, unsigned char *ret_prefixlen); + +typedef enum InAddrPrefixLenMode { + PREFIXLEN_FULL, /* Default to prefixlen of address size, 32 for IPv4 or 128 for IPv6, if not specified. */ + PREFIXLEN_REFUSE, /* Fail with -ENOANO if prefixlen is not specified. */ + PREFIXLEN_LEGACY, /* Default to legacy default prefixlen calculation from address if not specified. */ +} InAddrPrefixLenMode; + +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); +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) { + return in_addr_prefix_from_string_auto_internal(p, PREFIXLEN_FULL, ret_family, ret_prefix, ret_prefixlen); +} + +static inline size_t FAMILY_ADDRESS_SIZE(int family) { + assert(IN_SET(family, AF_INET, AF_INET6)); + return family == AF_INET6 ? 16 : 4; +} + +/* Workaround for clang, explicitly specify the maximum-size element here. + * See also oss-fuzz#11344. */ +#define IN_ADDR_NULL ((union in_addr_union) { .in6 = {} }) + +extern const struct hash_ops in_addr_data_hash_ops; |