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(krb5_get_host_realm): no components -> no dns. no mapping, try local

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realm and hope KDC knows better.


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18539 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-10-17 19:03:12 +00:00
parent ea8353794d
commit f162bd7f2e
1 changed files with 28 additions and 3 deletions
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31
lib/krb5/get_host_realm.c
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@@ -211,7 +211,8 @@ _krb5_get_host_realm_int (krb5_context context,
} }
/* /*
* Return the realm(s) of `host' as a NULL-terminated list in `realms'. * Return the realm(s) of `host' as a NULL-terminated list in
* `realms'. Free `realms' with krb5_free_host_realm().
*/ */
krb5_error_code KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_FUNCTION
@@ -220,12 +221,36 @@ krb5_get_host_realm(krb5_context context,
krb5_realm **realms) krb5_realm **realms)
{ {
char hostname[MAXHOSTNAMELEN]; char hostname[MAXHOSTNAMELEN];
krb5_error_code ret;
int use_dns;
if (host == NULL) { if (host == NULL) {
if (gethostname (hostname, sizeof(hostname))) if (gethostname (hostname, sizeof(hostname))) {
*realms = NULL;
return errno; return errno;
}
host = hostname; host = hostname;
} }
return _krb5_get_host_realm_int (context, host, 1, realms); /*
* 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) {
/*
* If there was no realm mapping for the host 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_string(context, "Unable to find realm of host %s",
host);
return KRB5_ERR_HOST_REALM_UNKNOWN;
}
}
return 0;
} }