Adding upstream version 3.8.1.upstream/3.8.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/contrib/librdns/compression.h b/contrib/librdns/compression.h
new file mode 100644
index 0000000..6056117
--- /dev/null
+++ b/contrib/librdns/compression.h
@@ -0,0 +1,48 @@
+/* Copyright (c) 2014, Vsevolod Stakhov
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED ''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 AUTHOR 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.
+ */
+#ifndef COMPRESSION_H_
+#define COMPRESSION_H_
+
+#include "dns_private.h"
+#include "khash.h"
+
+struct rdns_compression_name {
+	const char *suffix;	 /**< suffix packed */
+	unsigned int suffix_len; /**< length of the suffix */
+	unsigned int offset; /**< offset in the packet */
+};
+
+
+KHASH_DECLARE(rdns_compression_hash, struct rdns_compression_name, char);
+
+/**
+ * Try to compress name passed or write it 'as is'
+ * @return
+ */
+bool rdns_write_name_compressed (struct rdns_request *req,
+		const char *name, unsigned int namelen,
+		khash_t(rdns_compression_hash) **comp);
+
+void rdns_compression_free (khash_t(rdns_compression_hash) *comp);
+
+#endif /* COMPRESSION_H_ */