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in-addr-util: introduce in4_addr_is_local_multicast()

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This commit is contained in:
Yu Watanabe
2020-09-15 15:34:22 +09:00
parent 5643cfc0d9
commit ccea244865
2 changed files with 7 additions and 0 deletions
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6
src/basic/in-addr-util.c
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@ -76,6 +76,12 @@ int in_addr_is_multicast(int family, const union in_addr_union *u) {
return -EAFNOSUPPORT;
}
bool in4_addr_is_local_multicast(const struct in_addr *a) {
assert(a);
return (be32toh(a->s_addr) & UINT32_C(0xffffff00)) == UINT32_C(0xe0000000);
}
bool in4_addr_is_localhost(const struct in_addr *a) {
assert(a);

1
src/basic/in-addr-util.h
View File

@ -32,6 +32,7 @@ bool in6_addr_is_link_local_all_nodes(const struct in6_addr *a);
bool in4_addr_is_localhost(const struct in_addr *a);
int in_addr_is_localhost(int family, const union in_addr_union *u);
bool in4_addr_is_local_multicast(const struct in_addr *a);
bool in4_addr_is_non_local(const struct in_addr *a);
bool in4_addr_equal(const struct in_addr *a, const struct in_addr *b);