1 files changed, 57 insertions, 0 deletions
diff --git a/src/lib/krb5/krb/sname_match.c b/src/lib/krb5/krb/sname_match.c
new file mode 100644
index 0000000000000..9520dfc11c2c3
--- /dev/null
+++ b/src/lib/krb5/krb/sname_match.c
@@ -0,0 +1,57 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/krb5/krb/sname_match.c - krb5_sname_match API function */
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#include "k5-int.h"
+
+krb5_boolean KRB5_CALLCONV
+krb5_sname_match(krb5_context context, krb5_const_principal matching,
+                 krb5_const_principal princ)
+{
+    if (matching == NULL)
+        return TRUE;
+
+    if (matching->type != KRB5_NT_SRV_HST || matching->length != 2)
+        return krb5_principal_compare(context, matching, princ);
+
+    if (princ->length != 2)
+        return FALSE;
+
+    /* Check the realm if present in matching. */
+    if (matching->realm.length != 0 && !data_eq(matching->realm, princ->realm))
+        return FALSE;
+
+    /* Check the service name (must be present in matching). */
+    if (!data_eq(matching->data[0], princ->data[0]))
+        return FALSE;
+
+    /* Check the hostname if present in matching and not ignored. */
+    if (matching->data[1].length != 0 && !context->ignore_acceptor_hostname &&
+        !data_eq(matching->data[1], princ->data[1]))
+        return FALSE;
+
+    /* All elements match. */
+    return TRUE;
+}