diff options
Diffstat (limited to 'src/basic')
| -rw-r--r-- | src/basic/in-addr-util.c | 15 | ||||
| -rw-r--r-- | src/basic/in-addr-util.h | 1 |
2 files changed, 15 insertions, 1 deletions
diff --git a/src/basic/in-addr-util.c b/src/basic/in-addr-util.c index f4e24121e7..1f61b68efd 100644 --- a/src/basic/in-addr-util.c +++ b/src/basic/in-addr-util.c @@ -44,7 +44,7 @@ int in_addr_is_link_local(int family, const union in_addr_union *u) { assert(u); if (family == AF_INET) - return (be32toh(u->in.s_addr) & 0xFFFF0000) == (169U << 24 | 254U << 16); + return (be32toh(u->in.s_addr) & UINT32_C(0xFFFF0000)) == (UINT32_C(169) << 24 | UINT32_C(254) << 16); if (family == AF_INET6) return IN6_IS_ADDR_LINKLOCAL(&u->in6); @@ -52,6 +52,19 @@ int in_addr_is_link_local(int family, const union in_addr_union *u) { return -EAFNOSUPPORT; } +int in_addr_is_localhost(int family, const union in_addr_union *u) { + assert(u); + + if (family == AF_INET) + /* All of 127.x.x.x is localhost. */ + return (be32toh(u->in.s_addr) & UINT32_C(0xFF000000)) == UINT32_C(127) << 24; + + if (family == AF_INET) + return IN6_IS_ADDR_LOOPBACK(&u->in6); + + return -EAFNOSUPPORT; +} + int in_addr_equal(int family, const union in_addr_union *a, const union in_addr_union *b) { assert(a); assert(b); diff --git a/src/basic/in-addr-util.h b/src/basic/in-addr-util.h index 51af08868c..58f55b3418 100644 --- a/src/basic/in-addr-util.h +++ b/src/basic/in-addr-util.h @@ -33,6 +33,7 @@ union in_addr_union { 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); |