svn commit: samba r20406 - in branches/SAMBA_4_0/source/kdc: .
abartlet at samba.org
abartlet at samba.org
Fri Dec 29 11:01:38 GMT 2006
Author: abartlet
Date: 2006-12-29 11:01:37 +0000 (Fri, 29 Dec 2006)
New Revision: 20406
WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=20406
Log:
Metze's change in -r 19662 broke Kerberos logins from Win2k3.
The reason is long and complex, but is due to forwardable tickets:
We would extract the forwardable ticket from the GSSAPI payload, and
look for the expiry time of the ticket for krbtgt/REALM at REALM.
However, with -r 19662 the ticket is given to the client as being for
krbtgt/realm at REALM, as it asked for a lower case realm. Heimdal is
case sensitive for realms, and bails out. (It should just not store
the forwarded ticket).
We need to co-ordinate changes in the KDC with relaxation of checks in
Heimdal, and a better kerberos behaviour testsuite.
Andrew Bartlett
Modified:
branches/SAMBA_4_0/source/kdc/hdb-ldb.c
Changeset:
Modified: branches/SAMBA_4_0/source/kdc/hdb-ldb.c
===================================================================
--- branches/SAMBA_4_0/source/kdc/hdb-ldb.c 2006-12-29 10:35:44 UTC (rev 20405)
+++ branches/SAMBA_4_0/source/kdc/hdb-ldb.c 2006-12-29 11:01:37 UTC (rev 20406)
@@ -630,6 +630,7 @@
struct ldb_message **realm_ref_msg = NULL;
struct ldb_dn *realm_dn;
+ krb5_principal alloc_principal = NULL;
if (principal->name.name_string.len != 2
|| (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
/* Not a krbtgt */
@@ -640,6 +641,30 @@
if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
/* us */
+ /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
+ * is in our db, then direct the caller at our primary
+ * krgtgt */
+
+ const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
+ char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
+ if (!realm_fixed) {
+ krb5_set_error_string(context, "strupper_talloc: out of memory");
+ return ENOMEM;
+ }
+
+ ret = krb5_copy_principal(context, principal, &alloc_principal);
+ if (ret) {
+ return ret;
+ }
+
+ free(alloc_principal->name.name_string.val[1]);
+ alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
+ talloc_free(realm_fixed);
+ if (!alloc_principal->name.name_string.val[1]) {
+ krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
+ return ENOMEM;
+ }
+ principal = alloc_principal;
realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
} else {
/* we should lookup trusted domains */
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