1 files changed, 60 insertions, 0 deletions
diff --git a/src/lib/kadm5/srv/pwqual_empty.c b/src/lib/kadm5/srv/pwqual_empty.c
new file mode 100644
index 000000000000..1fc9b7bc3808
--- /dev/null
+++ b/src/lib/kadm5/srv/pwqual_empty.c
@@ -0,0 +1,60 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/kadm5/srv/pwqual_empty.c */
+/*
+ * Copyright (C) 2010 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+/* Password quality module to reject empty passwords */
+
+#include "k5-int.h"
+#include <krb5/pwqual_plugin.h>
+#include "server_internal.h"
+
+static krb5_error_code
+empty_check(krb5_context context, krb5_pwqual_moddata data,
+            const char *password, const char *policy_name,
+            krb5_principal princ, const char **languages)
+{
+    /* Unlike other built-in modules, this one operates even for principals
+     * with no password policy. */
+    if (*password == '\0') {
+        k5_setmsg(context, KADM5_PASS_Q_TOOSHORT,
+                  _("Empty passwords are not allowed"));
+        return KADM5_PASS_Q_TOOSHORT;
+    }
+    return 0;
+}
+
+krb5_error_code
+pwqual_empty_initvt(krb5_context context, int maj_ver, int min_ver,
+                    krb5_plugin_vtable vtable)
+{
+    krb5_pwqual_vtable vt;
+
+    if (maj_ver != 1)
+        return KRB5_PLUGIN_VER_NOTSUPP;
+    vt = (krb5_pwqual_vtable)vtable;
+    vt->name = "empty";
+    vt->check = empty_check;
+    return 0;
+}