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/*
This file is part of TALER
(C) 2014-2017 Taler Systems SA
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 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, see <http://www.gnu.org/licenses/>
*/
/**
* @file backend/taler-merchant-httpd_tip-enable.c
* @brief implement API for authorizing tips to be paid to visitors
* @author Christian Grothoff
*/
#include "platform.h"
#include <jansson.h>
#include <taler/taler_json_lib.h>
#include "taler-merchant-httpd.h"
#include "taler-merchant-httpd_mhd.h"
#include "taler-merchant-httpd_parsing.h"
#include "taler-merchant-httpd_exchanges.h"
#include "taler-merchant-httpd_responses.h"
#include "taler-merchant-httpd_tip-enable.h"
/**
* Information we keep for individual calls
* to requests that parse JSON, but keep no other state.
*/
struct TMH_JsonParseContext
{
/**
* This field MUST be first.
* FIXME: Explain why!
*/
struct TM_HandlerContext hc;
/**
* Placeholder for #TMH_PARSE_post_json() to keep its internal state.
*/
void *json_parse_context;
};
/**
* Custom cleanup routine for a `struct TMH_JsonParseContext`.
*
* @param hc the `struct TMH_JsonParseContext` to clean up.
*/
static void
json_parse_cleanup (struct TM_HandlerContext *hc)
{
struct TMH_JsonParseContext *jpc = (struct TMH_JsonParseContext *) hc;
TMH_PARSE_post_cleanup_callback (jpc->json_parse_context);
GNUNET_free (jpc);
}
/**
* Handle a "/tip-enable" request.
*
* @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_tip_enable (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
enum GNUNET_DB_QueryStatus qs;
int res;
struct TALER_Amount credit;
struct GNUNET_TIME_Absolute expiration;
struct TALER_ReservePrivateKeyP reserve_priv;
struct GNUNET_HashCode credit_uuid;
struct GNUNET_JSON_Specification spec[] = {
TALER_JSON_spec_amount ("credit", &credit),
GNUNET_JSON_spec_absolute_time ("expiration", &expiration),
GNUNET_JSON_spec_fixed_auto ("reserve_priv", &reserve_priv),
GNUNET_JSON_spec_fixed_auto ("credit_uuid", &credit_uuid),
GNUNET_JSON_spec_end()
};
struct TMH_JsonParseContext *ctx;
json_t *root;
if (NULL == *connection_cls)
{
ctx = GNUNET_new (struct TMH_JsonParseContext);
ctx->hc.cc = &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;
res = TMH_PARSE_json_data (connection,
root,
spec);
json_decref (root);
if (GNUNET_YES != res)
{
GNUNET_break_op (0);
return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
}
qs = db->enable_tip_reserve (db->cls,
&reserve_priv,
&credit_uuid,
&credit,
expiration);
if (0 > qs)
{
GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR != qs);
return TMH_RESPONSE_reply_internal_error (connection,
TALER_EC_TIP_ENABLE_DB_TRANSACTION_ERROR,
"Database error approving tip");
}
if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
{
return TMH_RESPONSE_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:s}",
"status", "duplicate submission");
}
return TMH_RESPONSE_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:s}",
"status", "ok");
}
/* end of taler-merchant-httpd_tip-enable.c */
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