/*
This file is part of TALER
Copyright (C) 2020-2021 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_products.c
* @brief Implementation of the POST /products request
* of the merchant's HTTP API
* @author Christian Grothoff
*/
#include "platform.h"
#include
#include
#include /* just for HTTP status codes */
#include
#include "taler_merchant_service.h"
#include "merchant_api_curl_defaults.h"
#include "merchant_api_common.h"
#include
#include
/**
* Handle for a POST /products/$ID operation.
*/
struct TALER_MERCHANT_ProductsPostHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_MERCHANT_ProductsPostCallback 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 /products request.
*
* @param cls the `struct TALER_MERCHANT_ProductsPostHandle`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not in JSON
*/
static void
handle_post_products_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_MERCHANT_ProductsPostHandle *pph = cls;
const json_t *json = response;
struct TALER_MERCHANT_HttpResponse hr = {
.http_status = (unsigned int) response_code,
.reply = json
};
pph->job = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"POST /products completed with response code %u\n",
(unsigned int) response_code);
switch (response_code)
{
case 0:
hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
case MHD_HTTP_NO_CONTENT:
break;
case MHD_HTTP_BAD_REQUEST:
hr.ec = TALER_JSON_get_error_code (json);
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_UNAUTHORIZED:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, merchant says we need to authenticate. */
break;
case MHD_HTTP_FORBIDDEN:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, merchant says we tried to abort the payment
* after it was successful. We should pass the JSON reply to the
* application */
break;
case MHD_HTTP_NOT_FOUND:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the
application */
break;
case MHD_HTTP_CONFLICT:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Server had an internal issue; we should retry,
but this API leaves this to the application */
break;
default:
TALER_MERCHANT_parse_error_details_ (json,
response_code,
&hr);
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d\n",
(unsigned int) response_code,
(int) hr.ec);
GNUNET_break_op (0);
break;
}
pph->cb (pph->cb_cls,
&hr);
TALER_MERCHANT_products_post_cancel (pph);
}
struct TALER_MERCHANT_ProductsPostHandle *
TALER_MERCHANT_products_post (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const char *product_id,
const char *description,
const json_t *description_i18n,
const char *unit,
const struct TALER_Amount *price,
const char *image,
const json_t *taxes,
int64_t total_stock,
const json_t *address,
struct GNUNET_TIME_Timestamp next_restock,
TALER_MERCHANT_ProductsPostCallback cb,
void *cb_cls)
{
struct TALER_MERCHANT_ProductsPostHandle *pph;
json_t *req_obj;
req_obj = GNUNET_JSON_PACK (
GNUNET_JSON_pack_string ("product_id",
product_id),
GNUNET_JSON_pack_string ("description",
description),
GNUNET_JSON_pack_object_incref ("description_i18n",
(json_t *) description_i18n),
GNUNET_JSON_pack_string ("unit",
unit),
TALER_JSON_pack_amount ("price",
price),
GNUNET_JSON_pack_string ("image",
image),
GNUNET_JSON_pack_array_incref ("taxes",
(json_t *) taxes),
GNUNET_JSON_pack_uint64 ("total_stock",
total_stock),
GNUNET_JSON_pack_object_incref ("address",
(json_t *) address),
GNUNET_JSON_pack_allow_null (
GNUNET_JSON_pack_timestamp ("next_restock",
next_restock)));
pph = GNUNET_new (struct TALER_MERCHANT_ProductsPostHandle);
pph->ctx = ctx;
pph->cb = cb;
pph->cb_cls = cb_cls;
pph->url = TALER_url_join (backend_url,
"private/products",
NULL);
if (NULL == pph->url)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not construct request URL.\n");
json_decref (req_obj);
GNUNET_free (pph);
return NULL;
}
{
CURL *eh;
eh = TALER_MERCHANT_curl_easy_get_ (pph->url);
GNUNET_assert (GNUNET_OK ==
TALER_curl_easy_post (&pph->post_ctx,
eh,
req_obj));
json_decref (req_obj);
pph->job = GNUNET_CURL_job_add2 (ctx,
eh,
pph->post_ctx.headers,
&handle_post_products_finished,
pph);
GNUNET_assert (NULL != pph->job);
}
return pph;
}
void
TALER_MERCHANT_products_post_cancel (
struct TALER_MERCHANT_ProductsPostHandle *pph)
{
if (NULL != pph->job)
{
GNUNET_CURL_job_cancel (pph->job);
pph->job = NULL;
}
TALER_curl_easy_post_finished (&pph->post_ctx);
GNUNET_free (pph->url);
GNUNET_free (pph);
}
/* end of merchant_api_post_products.c */