svn rev #25076: trunk/src/kdc/

[ghudson@MIT.EDU]

http://src.mit.edu/fisheye/changelog/krb5/?cs=25076
Commit By: ghudson
Log Message:
ticket: 6941
subject: Fix accidental KDC use of replay cache
target_version: 1.9.2
tags: pullup

r24464 (ticket #6804) intended to remove the KDC replay cache by
eliminating all of the USE_RCACHE code, but it had the unintended side
effect of causing krb5_rd_req_decoded to use the default server
rcache.  Using this cache is much less efficient because it is opened
and re-read for each request.

Set appropriate flags on the auth context to disable replay cache use
for TGS requests altogether.


Changed Files:
U   trunk/src/kdc/kdc_util.c
Modified: trunk/src/kdc/kdc_util.c
===================================================================
--- trunk/src/kdc/kdc_util.c	2011-08-07 01:17:16 UTC (rev 25075)
+++ trunk/src/kdc/kdc_util.c	2011-08-08 18:27:15 UTC (rev 25076)
@@ -245,6 +245,10 @@
     if ((retval = krb5_auth_con_init(kdc_context, &auth_context)))
         goto cleanup;
 
+    /* Don't use a replay cache. */
+    if ((retval = krb5_auth_con_setflags(kdc_context, auth_context, 0)))
+        goto cleanup;
+
     if ((retval = krb5_auth_con_setaddrs(kdc_context, auth_context, NULL,
                                          from->address)) )
         goto cleanup_auth_context;