1 files changed, 58 insertions, 0 deletions
diff --git a/src/gns/gns_common.h b/src/gns/gns_common.h
new file mode 100644
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+++ b/src/gns/gns_common.h
@@ -0,0 +1,58 @@
+/*
+     This file is part of GNUnet.
+     (C) 2012 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ *
+ * @file gns/gns_common.h
+ * @brief helper functions shared between GNS service and block plugin
+ * @author Martin Schanzenbach
+ */
+#ifndef GNS_COMMON_H
+#define GNS_COMMON_H
+
+#include "gnunet_util_lib.h"
+
+/**
+ * Compute the DHT key for a name in a zone.
+ *
+ * @param name name of the record
+ * @param zone GADS zone
+ * @param key where to store the DHT key for records under this name in the given zone
+ */
+void 
+GNUNET_GNS_get_key_for_record (const char *name,
+			       const struct GNUNET_CRYPTO_ShortHashCode *zone,
+			       struct GNUNET_HashCode *key);
+
+
+/**
+ * Compute the zone identifier from a given DHT key and record name.
+ *
+ * @param name name of the record
+ * @param key DHT key of the record
+ * @param zone set to the corresponding zone hash
+ */
+void 
+GNUNET_GNS_get_zone_from_key (const char *name,
+			      const struct GNUNET_HashCode *key,			       
+			      struct GNUNET_CRYPTO_ShortHashCode *zone);
+			       
+
+
+#endif