/*
This file is part of TALER
Copyright (C) 2014-2020 Taler Systems SA
TALER is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1,
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with TALER; see the file COPYING.LGPL. If not,
see
*/
/**
* @file merchant_api_post_orders.c
* @brief Implementation of the POST /orders
* @author Christian Grothoff
* @author Marcello Stanisci
*/
#include "platform.h"
#include
#include
#include /* just for HTTP status codes */
#include
#include
#include "taler_merchant_service.h"
#include
#include
#include
/**
* @brief A POST /orders Handle
*/
struct TALER_MERCHANT_PostOrdersHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_MERCHANT_PostOrdersCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Reference to the execution context.
*/
struct GNUNET_CURL_Context *ctx;
/**
* Minor context that holds body and headers.
*/
struct TALER_CURL_PostContext post_ctx;
};
/**
* Function called when we're done processing the
* HTTP POST /orders request.
*
* @param cls the `struct TALER_MERCHANT_PostOrdersHandle`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not JSON
*/
static void
handle_post_order_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_MERCHANT_PostOrdersHandle *po = cls;
const json_t *json = response;
struct TALER_MERCHANT_PostOrdersReply por = {
.hr.http_status = (unsigned int) response_code,
.hr.reply = json
};
struct TALER_ClaimTokenP token = {0};
po->job = NULL;
switch (response_code)
{
case 0:
por.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
case MHD_HTTP_OK:
{
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("order_id",
&por.details.ok.order_id),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_fixed_auto ("token",
&token)),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (json,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
por.hr.http_status = 0;
por.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
}
else
{
if (! GNUNET_is_zero (&token))
por.details.ok.token = &token;
}
}
break;
case MHD_HTTP_BAD_REQUEST:
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
/* This should never happen, either us or
the merchant is buggy (or API version conflict);
just pass JSON reply to the application */
break;
case MHD_HTTP_FORBIDDEN:
/* Nothing really to verify, merchant says one
of the signatures is invalid; as we checked them,
this should never happen, we should pass the JSON
reply to the application */
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_NOT_FOUND:
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the application */
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_CONFLICT:
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_GONE:
/* The quantity of some product requested was not available. */
{
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string (
"product_id",
&por.details.gone.product_id),
GNUNET_JSON_spec_uint64 (
"requested_quantity",
&por.details.gone.requested_quantity),
GNUNET_JSON_spec_uint64 (
"available_quantity",
&por.details.gone.available_quantity),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_absolute_time (
"restock_expected",
&por.details.gone.restock_expected)),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (json,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
por.hr.http_status = 0;
por.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
}
break;
}
case MHD_HTTP_INTERNAL_SERVER_ERROR:
/* Server had an internal issue; we should retry,
but this API leaves this to the application */
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
break;
default:
/* unexpected response code */
por.hr.ec = TALER_JSON_get_error_code (json);
por.hr.hint = TALER_JSON_get_error_hint (json);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d\n",
(unsigned int) response_code,
(int) por.hr.ec);
GNUNET_break_op (0);
break;
}
po->cb (po->cb_cls,
&por);
TALER_MERCHANT_orders_post_cancel (po);
}
struct TALER_MERCHANT_PostOrdersHandle *
TALER_MERCHANT_orders_post (struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const json_t *order,
struct GNUNET_TIME_Relative refund_delay,
TALER_MERCHANT_PostOrdersCallback cb,
void *cb_cls)
{
return TALER_MERCHANT_orders_post2 (ctx,
backend_url,
order,
refund_delay,
NULL,
0,
NULL,
0,
NULL,
true,
cb,
cb_cls);
}
struct TALER_MERCHANT_PostOrdersHandle *
TALER_MERCHANT_orders_post2 (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const json_t *order,
struct GNUNET_TIME_Relative refund_delay,
const char *payment_target,
unsigned int inventory_products_length,
const struct TALER_MERCHANT_InventoryProduct inventory_products[],
unsigned int uuids_length,
const struct GNUNET_Uuid uuids[],
bool create_token,
TALER_MERCHANT_PostOrdersCallback cb,
void *cb_cls)
{
struct TALER_MERCHANT_PostOrdersHandle *po;
json_t *req;
CURL *eh;
po = GNUNET_new (struct TALER_MERCHANT_PostOrdersHandle);
po->ctx = ctx;
po->cb = cb;
po->cb_cls = cb_cls;
po->url = TALER_url_join (backend_url,
"private/orders",
NULL);
req = json_pack ("{s:O}",
"order", (json_t *) order);
GNUNET_assert (NULL != req);
if (0 != refund_delay.rel_value_us)
{
GNUNET_assert (0 ==
json_object_set_new (req,
"refund_delay",
GNUNET_JSON_from_time_rel (
refund_delay)));
}
if (NULL != payment_target)
{
GNUNET_assert (0 ==
json_object_set_new (req,
"payment_target",
json_string (payment_target)));
}
if (0 != inventory_products_length)
{
json_t *ipa = json_array ();
GNUNET_assert (NULL != ipa);
for (unsigned int i = 0; ipost_ctx,
eh,
req))
{
GNUNET_break (0);
json_decref (req);
GNUNET_free (po);
return NULL;
}
json_decref (req);
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_URL,
po->url));
po->job = GNUNET_CURL_job_add2 (ctx,
eh,
po->post_ctx.headers,
&handle_post_order_finished,
po);
return po;
}
void
TALER_MERCHANT_orders_post_cancel (
struct TALER_MERCHANT_PostOrdersHandle *po)
{
if (NULL != po->job)
{
GNUNET_CURL_job_cancel (po->job);
po->job = NULL;
}
GNUNET_free (po->url);
TALER_curl_easy_post_finished (&po->post_ctx);
GNUNET_free (po);
}
/* end of merchant_api_post_orders.c */