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/*
This file is part of TALER
(C) 2017 Taler Systems SA
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, see <http://www.gnu.org/licenses/>
*/
/**
* @file backend/taler-merchant-httpd_trigger-pay.c
* @brief implementation of /public/trigger-pay handler
* @author Florian Dold
*/
#include "platform.h"
#include <string.h>
#include <microhttpd.h>
#include <jansson.h>
#include <taler/taler_json_lib.h>
#include <taler/taler_signatures.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_trigger-pay.h"
/**
* Add a header to the response from a query parameter.
*
*
* @param connection connection to take query parameters from
* @param arg_name name of query parameter
* @param response response that receives the header
* @param header_name name of the header to set
*/
static void
add_header_from_arg (struct MHD_Connection *connection,
const char *arg_name,
struct MHD_Response *response,
const char *header_name)
{
const char *arg = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
arg_name);
if (NULL == arg)
return;
GNUNET_break (MHD_YES ==
MHD_add_response_header (response, header_name, arg));
}
/**
* Serves a request to browsers to trigger a payment.
* Contains all the logic to handle different platforms, so that the frontend
* does not have to handle that.
*
* @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_trigger_pay (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
struct MHD_Response *response;
// FIXME: Taler wallet detection!
char *data = "<html><body><p>Processing payment ...</p></body></html>";
response = MHD_create_response_from_buffer (strlen (data),
data,
MHD_RESPMEM_PERSISTENT);
add_header_from_arg (connection,
"session_id",
response,
"Taler-Session-Id");
add_header_from_arg (connection,
"contract_url",
response,
"Taler-Contract-Url");
add_header_from_arg (connection,
"h_contract_terms",
response,
"Taler-Contract-Hash");
add_header_from_arg (connection,
"tip_token",
response,
"Taler-Tip");
add_header_from_arg (connection,
"refund_url",
response,
"Taler-Refund-Url");
add_header_from_arg (connection,
"resource_url",
response,
"Taler-Resource-Url");
/* FIXME: the X- variants should go away in the future, for now
preserved for backwards-compatibility only! */
add_header_from_arg (connection,
"session_id",
response,
"X-Taler-Session-Id");
add_header_from_arg (connection,
"contract_url",
response,
"X-Taler-Contract-Url");
add_header_from_arg (connection,
"h_contract_terms",
response,
"X-Taler-Contract-Hash");
add_header_from_arg (connection,
"tip_token",
response,
"X-Taler-Tip");
add_header_from_arg (connection,
"refund_url",
response,
"X-Taler-Refund-Url");
add_header_from_arg (connection,
"resource_url",
response,
"X-Taler-Resource-Url");
MHD_queue_response (connection,
MHD_HTTP_PAYMENT_REQUIRED,
response);
MHD_destroy_response (response);
return MHD_YES;
}
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