1 files changed, 62 insertions, 0 deletions
diff --git a/usr.sbin/unbound/util/edns.h b/usr.sbin/unbound/util/edns.h
new file mode 100644
index 00000000000..a4ee7def634
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+++ b/usr.sbin/unbound/util/edns.h
@@ -0,0 +1,62 @@
+/*
+ * util/edns.h - handle base EDNS options.
+ *
+ * Copyright (c) 2018, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of the NLNET LABS 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 THE COPYRIGHT HOLDERS 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 THE COPYRIGHT
+ * HOLDER 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.
+ */
+
+/**
+ * \file
+ *
+ * This file contains functions for base EDNS options.
+ */
+
+#ifndef UTIL_EDNS_H
+#define UTIL_EDNS_H
+
+struct edns_data;
+struct config_file;
+struct comm_point;
+struct regional;
+
+/**
+ * Apply common EDNS options.
+ *
+ * @param edns_out: initialised edns information with outbound edns.
+ * @param edns_in: initialised edns information with received edns.
+ * @param cfg: configuration.
+ * @param c: comm channel.
+ * @param region: the region to allocate the edns options in.
+ */
+int apply_edns_options(struct edns_data* edns_out, struct edns_data* edns_in,
+	struct config_file* cfg, struct comm_point* c, struct regional* region);
+
+#endif