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-rw-r--r--src/json/json.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/json/json.c b/src/json/json.c
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index 000000000..da9e8b9f8
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+++ b/src/json/json.c
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+/*
+ This file is part of TALER
+ Copyright (C) 2014, 2015, 2016 GNUnet e.V.
+
+ TALER 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.
+
+ 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file json/json.c
+ * @brief helper functions for JSON processing using libjansson
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_util.h"
+#include "taler_json_lib.h"
+
+
+/**
+ * Hash a JSON for binary signing.
+ *
+ * @param[in] json some JSON value
+ * @param[out] hc resulting hash code
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
+ */
+int
+TALER_JSON_hash (const json_t *json,
+ struct GNUNET_HashCode *hc)
+{
+ char *wire_enc;
+ size_t len;
+
+ if (NULL == (wire_enc = json_dumps (json,
+ JSON_COMPACT | JSON_SORT_KEYS)))
+ return GNUNET_SYSERR;
+ len = strlen (wire_enc) + 1;
+ GNUNET_CRYPTO_hash (wire_enc,
+ len,
+ hc);
+ free (wire_enc);
+ return GNUNET_OK;
+}
+
+
+/* End of json/json.c */