1 files changed, 65 insertions, 0 deletions
diff --git a/src/lib/krb5/krb/addr_srch.c b/src/lib/krb5/krb/addr_srch.c
new file mode 100644
index 0000000000000..113c52097e360
--- /dev/null
+++ b/src/lib/krb5/krb/addr_srch.c
@@ -0,0 +1,65 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/krb5/krb/addr_srch.c */
+/*
+ * Copyright 1990 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"
+
+static unsigned int
+address_count(krb5_address *const *addrlist)
+{
+    unsigned int i;
+
+    if (addrlist == NULL)
+        return 0;
+
+    for (i = 0; addrlist[i]; i++)
+        ;
+
+    return i;
+}
+
+/*
+ * if addr is listed in addrlist, or addrlist is null, return TRUE.
+ * if not listed, return FALSE
+ */
+krb5_boolean
+krb5_address_search(krb5_context context, const krb5_address *addr, krb5_address *const *addrlist)
+{
+    /*
+     * Treat an address list containing only a NetBIOS address
+     * as empty, because we presently have no way of associating
+     * a client with its NetBIOS address.
+     */
+    if (address_count(addrlist) == 1 &&
+        addrlist[0]->addrtype == ADDRTYPE_NETBIOS)
+        return TRUE;
+    if (!addrlist)
+        return TRUE;
+    for (; *addrlist; addrlist++) {
+        if (krb5_address_compare(context, addr, *addrlist))
+            return TRUE;
+    }
+    return FALSE;
+}