add krb5 glue for userok

lib/gssapi/krb5/external.c

@@ -323,7 +323,10 @@ static gssapi_mech_interface_desc krb5_mech = {
     NULL,
     NULL,
     krb5_mo,
-    sizeof(krb5_mo) / sizeof(krb5_mo[0])
+    sizeof(krb5_mo) / sizeof(krb5_mo[0]),
+    NULL,
+    _gsskrb5_userok,
+    NULL
 };
 
 gssapi_mech_interface

lib/gssapi/krb5/userok.c

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2011, PADL Software Pty Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of PADL Software nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "gsskrb5_locl.h"
+
+OM_uint32
+_gsskrb5_userok(OM_uint32 *minor_status,
+                const gss_name_t input_name,
+                const char *user,
+                int *user_ok)
+{
+    krb5_context context;
+    krb5_const_principal princ = (krb5_const_principal)input_name;
+
+    GSSAPI_KRB5_INIT(&context);
+
+    *minor_status = 0;
+    *user_ok = krb5_kuserok(context, princ, user);
+
+    return GSS_S_COMPLETE;
+}