+/*
+ This is used to canonicalize a ctdb_sock_addr structure.
+*/
+static void smbd_ctdb_canonicalize_ip(const struct sockaddr_storage *in,
+ struct sockaddr_storage *out)
+{
+ memcpy(out, in, sizeof (*out));
+
+#ifdef HAVE_IPV6
+ if (in->ss_family == AF_INET6) {
+ const char prefix[12] = { 0,0,0,0,0,0,0,0,0,0,0xff,0xff };
+ const struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)in;
+ struct sockaddr_in *out4 = (struct sockaddr_in *)out;
+ if (memcmp(&in6->sin6_addr, prefix, 12) == 0) {
+ memset(out, 0, sizeof(*out));
+#ifdef HAVE_SOCK_SIN_LEN
+ out4->sin_len = sizeof(*out);
+#endif
+ out4->sin_family = AF_INET;
+ out4->sin_port = in6->sin6_port;
+ memcpy(&out4->sin_addr, &in6->sin6_addr.s6_addr32[3], 4);
+ }
+ }
+#endif
+}
+