-int socket_address_unlink(SocketAddress *a) {
- assert(a);
-
- if (socket_address_family(a) != AF_UNIX)
- return 0;
-
- if (a->sockaddr.un.sun_path[0] == 0)
- return 0;
-
- if (unlink(a->sockaddr.un.sun_path) < 0)
- return -errno;
-
- return 1;
-}
-
-int in_addr_null(unsigned family, union in_addr_union *u) {
- assert(u);
-
- if (family == AF_INET)
- return u->in.s_addr == 0;
-
- if (family == AF_INET6)
- return
- u->in6.s6_addr32[0] == 0 &&
- u->in6.s6_addr32[1] == 0 &&
- u->in6.s6_addr32[2] == 0 &&
- u->in6.s6_addr32[3] == 0;
-
- return -EAFNOSUPPORT;
-}
-
-
-int in_addr_equal(unsigned family, union in_addr_union *a, union in_addr_union *b) {
- assert(a);
- assert(b);
-
- if (family == AF_INET)
- return a->in.s_addr == b->in.s_addr;
-
- if (family == AF_INET6)
- return
- a->in6.s6_addr32[0] == b->in6.s6_addr32[0] &&
- a->in6.s6_addr32[1] == b->in6.s6_addr32[1] &&
- a->in6.s6_addr32[2] == b->in6.s6_addr32[2] &&
- a->in6.s6_addr32[3] == b->in6.s6_addr32[3];
-
- return -EAFNOSUPPORT;
-}
-
-int in_addr_prefix_intersect(
- unsigned family,
- const union in_addr_union *a,
- unsigned aprefixlen,
- const union in_addr_union *b,
- unsigned bprefixlen) {
-
- unsigned m;
-
- assert(a);
- assert(b);
-
- /* Checks whether there are any addresses that are in both
- * networks */
-
- m = MIN(aprefixlen, bprefixlen);
-
- if (family == AF_INET) {
- uint32_t x, nm;
-
- x = be32toh(a->in.s_addr ^ b->in.s_addr);
- nm = 0xFFFFFFFFUL << (32 - m);
-
- return (x & nm) == 0;
- }
-
- if (family == AF_INET6) {
- unsigned i;
-
- if (m > 128)
- m = 128;
-
- for (i = 0; i < 16; i++) {
- uint8_t x, nm;
-
- x = a->in6.s6_addr[i] ^ b->in6.s6_addr[i];
-
- if (m < 8)
- nm = 0xFF << (8 - m);
- else
- nm = 0xFF;
-
- if ((x & nm) != 0)
- return 0;
-
- if (m > 8)
- m -= 8;
- else
- m = 0;
- }
-
- return 1;
- }
-
- return -EAFNOSUPPORT;
-}
-
-int in_addr_prefix_next(unsigned family, union in_addr_union *u, unsigned prefixlen) {
- assert(u);
-
- /* Increases the network part of an address by one. Returns
- * positive it that succeeds, or 0 if this overflows. */
-
- if (prefixlen <= 0)
- return 0;
-
- if (family == AF_INET) {
- uint32_t c, n;
-
- if (prefixlen > 32)
- prefixlen = 32;
-
- c = be32toh(u->in.s_addr);
- n = c + (1UL << (32 - prefixlen));
- if (n < c)
- return 0;
- n &= 0xFFFFFFFFUL << (32 - prefixlen);
-
- u->in.s_addr = htobe32(n);
- return 1;
- }
-
- if (family == AF_INET6) {
- struct in6_addr add = {}, result;
- uint8_t overflow = 0;
- unsigned i;
-
- if (prefixlen > 128)
- prefixlen = 128;