static krb5_boolean
need_referral(krb5_context context, krb5_principal server, krb5_realm **realms)
{
if(server->name.name_type != KRB5_NT_SRV_INST ||
server->name.name_string.len != 2)
return FALSE;
return _krb5_get_host_realm_int(context, server->name.name_string.val[1],
FALSE, realms) == 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_get_host_realm(krb5_context context,
const char *host,
krb5_realm **realms)
{
char hostname[MAXHOSTNAMELEN];
if (host == NULL) {
if (gethostname (hostname, sizeof(hostname)))
return errno;
host = hostname;
}
return _krb5_get_host_realm_int (context, host, 1, realms);
}
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_get_host_realm(krb5_context context,
const char *targethost,
krb5_realm **realms)
{
const char *host = targethost;
char hostname[MAXHOSTNAMELEN];
krb5_error_code ret;
int use_dns;
if (host == NULL) {
if (gethostname (hostname, sizeof(hostname))) {
*realms = NULL;
return errno;
}
host = hostname;
}
/*
* If our local hostname is without components, don't even try to dns.
*/
use_dns = (strchr(host, '.') != NULL);
ret = _krb5_get_host_realm_int (context, host, use_dns, realms);
if (ret && targethost != NULL) {
/*
* If there was no realm mapping for the host (and we wasn't
* looking for ourself), guess at the local realm, maybe our
* KDC knows better then we do and we get a referral back.
*/
ret = krb5_get_default_realms(context, realms);
if (ret) {
krb5_set_error_message(context, KRB5_ERR_HOST_REALM_UNKNOWN,
N_("Unable to find realm of host %s", ""),
host);
return KRB5_ERR_HOST_REALM_UNKNOWN;
}
}
return ret;
}
