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/*
This file is part of TALER
(C) 2014, 2015 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 backend/taler-merchant-httpd_contract.c
* @brief HTTP serving layer mainly intended to communicate with the frontend
* @author Marcello Stanisci
*/
#include "platform.h"
#include <jansson.h>
#include <taler/taler_signatures.h>
#include "taler-merchant-httpd.h"
#include "taler-merchant-httpd_parsing.h"
#include "taler-merchant-httpd_auditors.h"
#include "taler-merchant-httpd_mints.h"
#include "taler-merchant-httpd_responses.h"
/**
* Hashes a plain JSON contract sending the result to the other end of
* HTTP communication
*
* @param rh context of the handler
* @param connection the MHD connection to handle
* @param[in,out] connection_cls the connection's closure (can be updated)
* @param upload_data upload data
* @param[in,out] upload_data_size number of bytes (left) in @a upload_data
* @return MHD result code
*/
int
MH_handler_hash_contract (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
json_t *root;
json_t *jcontract;
int res;
struct GNUNET_HashCode hc;
struct TMH_JsonParseContext *ctx;
if (NULL == *connection_cls)
{
ctx = GNUNET_new (struct TMH_JsonParseContext);
ctx->hc.cc = &TMH_json_parse_cleanup;
*connection_cls = ctx;
}
else
{
ctx = *connection_cls;
}
res = TMH_PARSE_post_json (connection,
&ctx->json_parse_context,
upload_data,
upload_data_size,
&root);
if (GNUNET_SYSERR == res)
return MHD_NO;
/* the POST's body has to be further fetched */
if ((GNUNET_NO == res) || (NULL == root))
return MHD_YES;
jcontract = json_object_get (root, "contract");
if (NULL == jcontract)
{
return TMH_RESPONSE_reply_external_error (connection,
"missing 'contract' field");
}
if (GNUNET_OK != TALER_hash_json (jcontract,
&hc))
{
return TMH_RESPONSE_reply_external_error (connection,
"expected object as contract");
}
GNUNET_assert (GNUNET_OK ==
TALER_hash_json (jcontract,
&hc));
/* return final response */
res = TMH_RESPONSE_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:O}",
"hash", TALER_json_from_data (&hc,
sizeof (hc)));
json_decref (root);
return res;
}
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