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diff --git a/src/mint/taler-mint-httpd_validation.h b/src/mint/taler-mint-httpd_validation.h
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+++ b/src/mint/taler-mint-httpd_validation.h
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+/*
+  This file is part of TALER
+  Copyright (C) 2016 GNUnet e.V.
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER 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 Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License along with
+  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file taler-mint-httpd_validation.h
+ * @brief helpers for calling the wire plugins to validate addresses
+ * @author Christian Grothoff
+ */
+#ifndef TALER_MINT_HTTPD_VALIDATION_H
+#define TALER_MINT_HTTPD_VALIDATION_H
+#include <gnunet/gnunet_util_lib.h>
+#include <jansson.h>
+
+
+/**
+ * Initialize validation subsystem.
+ *
+ * @param cfg configuration to use
+ * @return #GNUNET_OK on success
+ */
+int
+TMH_VALIDATION_init (const struct GNUNET_CONFIGURATION_Handle *cfg);
+
+
+/**
+ * Shutdown validation subsystem.
+ */
+void
+TMH_VALIDATION_done (void);
+
+
+/**
+ * Check if the given wire format JSON object is correctly formatted as
+ * a wire address.
+ *
+ * @param wire the JSON wire format object
+ * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
+ */
+int
+TMH_json_validate_wireformat (const json_t *wire);
+
+/**
+ * Check if we support the given wire method.
+ *
+ * @param type type of wire method to check
+ * @return #GNUNET_YES if the method is supported
+ */
+int
+TMH_VALIDATION_test_method (const char *type);
+
+
+/**
+ * Obtain supported validation methods as a JSON array,
+ * and as a hash.
+ *
+ * @param[out] h set to the hash of the JSON methods
+ * @return JSON array with the supported validation methods
+ */
+json_t *
+TMH_VALIDATION_get_methods (struct GNUNET_HashCode *h);
+
+
+#endif