diff options
Diffstat (limited to 'source4/heimdal/lib/krb5/get_host_realm.c')
-rw-r--r-- | source4/heimdal/lib/krb5/get_host_realm.c | 74 |
1 files changed, 40 insertions, 34 deletions
diff --git a/source4/heimdal/lib/krb5/get_host_realm.c b/source4/heimdal/lib/krb5/get_host_realm.c index 33a3438b12..ffc646d98b 100644 --- a/source4/heimdal/lib/krb5/get_host_realm.c +++ b/source4/heimdal/lib/krb5/get_host_realm.c @@ -34,7 +34,7 @@ #include "krb5_locl.h" #include <resolve.h> -RCSID("$Id: get_host_realm.c,v 1.35 2005/08/23 08:14:02 lha Exp $"); +RCSID("$Id: get_host_realm.c,v 1.37 2006/10/17 19:28:36 lha Exp $"); /* To automagically find the correct realm of a host (without * [domain_realm] in krb5.conf) add a text record for your domain with @@ -187,65 +187,71 @@ _krb5_get_host_realm_int (krb5_context context, return 0; } } - - *realms = malloc(2 * sizeof(krb5_realm)); - if (*realms == NULL) { - krb5_set_error_string(context, "malloc: out of memory"); - return ENOMEM; - } - - (*realms)[1] = NULL; - p = strchr(host, '.'); if(p != NULL) { p++; - (*realms)[0] = strdup(p); - if((*realms)[0] == NULL) { - free(*realms); + *realms = malloc(2 * sizeof(krb5_realm)); + if (*realms == NULL) { krb5_set_error_string(context, "malloc: out of memory"); return ENOMEM; } - strupr((*realms)[0]); - } else { - krb5_error_code ret; - ret = krb5_get_default_realm(context, &(*realms)[0]); - if(ret) { + + (*realms)[0] = strdup(p); + if((*realms)[0] == NULL) { free(*realms); krb5_set_error_string(context, "malloc: out of memory"); return ENOMEM; } - if((*realms)[0] == NULL) { - free(*realms); - krb5_set_error_string(context, "unable to find realm of host %s", host); - return KRB5_ERR_HOST_REALM_UNKNOWN; - } + strupr((*realms)[0]); + (*realms)[1] = NULL; + return 0; } - return 0; + krb5_set_error_string(context, "unable to find realm of host %s", host); + return KRB5_ERR_HOST_REALM_UNKNOWN; } /* - * 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_get_host_realm(krb5_context context, - const char *host, + const char *targethost, krb5_realm **realms) { + const char *host = targethost; char hostname[MAXHOSTNAMELEN]; - krb5_boolean use_dns; + krb5_error_code ret; + int use_dns; if (host == NULL) { - if (gethostname (hostname, sizeof(hostname))) + if (gethostname (hostname, sizeof(hostname))) { + *realms = NULL; return errno; + } host = hostname; } - if (strchr(host, '.') == NULL) { - use_dns = FALSE; - } else { - use_dns = TRUE; - } + /* + * If our local hostname is without components, don't even try to dns. + */ + + use_dns = (strchr(host, '.') != NULL); - return _krb5_get_host_realm_int (context, host, use_dns, realms); + 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_string(context, "Unable to find realm of host %s", + host); + return KRB5_ERR_HOST_REALM_UNKNOWN; + } + } + return ret; } |