1 files changed, 58 insertions, 0 deletions
diff --git a/testing/krb5/krb5-1.9.1-canonicalize-fallback.patch b/testing/krb5/krb5-1.9.1-canonicalize-fallback.patch
new file mode 100644
index 000000000..e5a38498f
--- /dev/null
+++ b/testing/krb5/krb5-1.9.1-canonicalize-fallback.patch
@@ -0,0 +1,58 @@
+diff -Naur krb5-1.9.1.ori/src/lib/krb5/krb/get_creds.c krb5-1.9.1/src/lib/krb5/krb/get_creds.c
+--- krb5-1.9.1.ori/src/lib/krb5/krb/get_creds.c	2011-02-09 16:55:36.000000000 -0500
++++ krb5-1.9.1/src/lib/krb5/krb/get_creds.c	2011-09-26 18:42:01.465190278 -0400
+@@ -470,13 +470,10 @@
+ 
+ /***** STATE_REFERRALS *****/
+ 
+-/*
+- * Possibly retry a request in the fallback realm after a referral request
+- * failure in the local realm.  Expects ctx->reply_code to be set to the error
+- * from a referral request.
+- */
++/* Possibly try a non-referral request after a referral request failure.
++ * Expects ctx->reply_code to be set to the error from a referral request. */
+ static krb5_error_code
+-try_fallback_realm(krb5_context context, krb5_tkt_creds_context ctx)
++try_fallback(krb5_context context, krb5_tkt_creds_context ctx)
+ {
+     krb5_error_code code;
+     char **hrealms;
+@@ -485,9 +482,10 @@
+     if (ctx->referral_count > 1)
+         return ctx->reply_code;
+ 
+-    /* Only fall back if the original request used the referral realm. */
++    /* If the request used a specified realm, make a non-referral request to
++     * that realm (in case it's a KDC which rejects KDC_OPT_CANONICALIZE). */
+     if (!krb5_is_referral_realm(&ctx->req_server->realm))
+-        return ctx->reply_code;
++        return begin_non_referral(context, ctx);
+ 
+     if (ctx->server->length < 2) {
+         /* We need a type/host format principal to find a fallback realm. */
+@@ -500,10 +498,10 @@
+     if (code != 0)
+         return code;
+ 
+-    /* Give up if the fallback realm isn't any different. */
++    /* If the fallback realm isn't any different, use the existing TGT. */
+     if (data_eq_string(ctx->server->realm, hrealms[0])) {
+         krb5_free_host_realm(context, hrealms);
+-        return ctx->reply_code;
++        return begin_non_referral(context, ctx);
+     }
+ 
+     /* Rewrite server->realm to be the fallback realm. */
+@@ -540,9 +538,9 @@
+     krb5_error_code code;
+     const krb5_data *referral_realm;
+ 
+-    /* Possibly retry with the fallback realm on error. */
++    /* Possibly try a non-referral fallback request on error. */
+     if (ctx->reply_code != 0)
+-        return try_fallback_realm(context, ctx);
++        return try_fallback(context, ctx);
+ 
+     if (krb5_principal_compare(context, ctx->reply_creds->server,
+                                ctx->server)) {