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/*
This file is part of TALER
Copyright (C) 2014-2023 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
<http://www.gnu.org/licenses/>
*/
/**
* @file merchant_api_get_tokenfamily.c
* @brief Implementation of the GET /tokenfamily/$ID request of the merchant's HTTP API
* @author Christian Blättler
*/
#include "platform.h"
#include <curl/curl.h>
#include <gnunet/gnunet_common.h>
#include <gnunet/gnunet_json_lib.h>
#include <jansson.h>
#include <microhttpd.h> /* just for HTTP status codes */
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_curl_lib.h>
#include "taler_merchant_service.h"
#include "merchant_api_curl_defaults.h"
#include <taler/taler_json_lib.h>
#include <taler/taler_signatures.h>
/**
* Handle for a GET /tokenfamilies/$SLUG operation.
*/
struct TALER_MERCHANT_TokenFamilyGetHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_MERCHANT_TokenFamilyGetCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Reference to the execution context.
*/
struct GNUNET_CURL_Context *ctx;
};
/**
* Function called when we're done processing the
* HTTP GET /tokenfamilies/$ID request.
*
* @param cls the `struct TALER_MERCHANT_TokenFamilyGetHandle`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not in JSON
*/
static void
handle_get_token_family_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_MERCHANT_TokenFamilyGetHandle *handle = cls;
const json_t *json = response;
struct TALER_MERCHANT_TokenFamilyGetResponse res = {
.hr.http_status = (unsigned int) response_code,
.hr.reply = json
};
handle->job = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Got /tokenfamilies/$ID response with status code %u\n",
(unsigned int) response_code);
switch (response_code)
{
case MHD_HTTP_OK:
{
// Parse token family response
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("slug",
&res.details.ok.slug),
GNUNET_JSON_spec_string ("name",
&res.details.ok.name),
GNUNET_JSON_spec_string ("description",
&res.details.ok.description),
GNUNET_JSON_spec_object_const ("description_i18n",
&res.details.ok.description_i18n),
GNUNET_JSON_spec_timestamp ("valid_after",
&res.details.ok.valid_after),
GNUNET_JSON_spec_timestamp ("valid_before",
&res.details.ok.valid_before),
GNUNET_JSON_spec_relative_time ("duation",
&res.details.ok.duration),
GNUNET_JSON_spec_string ("kind",
&res.details.ok.kind),
GNUNET_JSON_spec_uint64 ("issued",
&res.details.ok.issued),
GNUNET_JSON_spec_uint64 ("redeemed",
&res.details.ok.redeemed),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK ==
GNUNET_JSON_parse (json,
spec,
NULL, NULL))
{
handle->cb (handle->cb_cls,
&res);
GNUNET_JSON_parse_free (spec);
TALER_MERCHANT_token_family_get_cancel (handle);
return;
}
res.hr.http_status = 0;
res.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
}
case MHD_HTTP_UNAUTHORIZED:
res.hr.ec = TALER_JSON_get_error_code (json);
res.hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, merchant says we need to authenticate. */
break;
case MHD_HTTP_NOT_FOUND:
res.hr.ec = TALER_JSON_get_error_code (json);
res.hr.hint = TALER_JSON_get_error_hint (json);
break;
default:
/* unexpected response code */
res.hr.ec = TALER_JSON_get_error_code (json);
res.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) res.hr.ec);
break;
}
}
struct TALER_MERCHANT_TokenFamilyGetHandle *
TALER_MERCHANT_token_family_get (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const char *token_family_slug,
TALER_MERCHANT_TokenFamilyGetCallback cb,
void *cb_cls)
{
struct TALER_MERCHANT_TokenFamilyGetHandle *handle;
CURL *eh;
handle = GNUNET_new (struct TALER_MERCHANT_TokenFamilyGetHandle);
handle->ctx = ctx;
handle->cb = cb;
handle->cb_cls = cb_cls;
{
char *path;
GNUNET_asprintf (&path,
"private/tokenfamilies/%s",
token_family_slug);
handle->url = TALER_url_join (backend_url,
path,
NULL);
GNUNET_free (path);
}
if (NULL == handle->url)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not construct request URL.\n");
GNUNET_free (handle);
return NULL;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Requesting URL '%s'\n",
handle->url);
eh = TALER_MERCHANT_curl_easy_get_ (handle->url);
handle->job = GNUNET_CURL_job_add (ctx,
eh,
&handle_get_token_family_finished,
handle);
return handle;
}
void
TALER_MERCHANT_token_family_get_cancel (
struct TALER_MERCHANT_TokenFamilyGetHandle *handle)
{
if (NULL != handle->job)
GNUNET_CURL_job_cancel (handle->job);
GNUNET_free (handle->url);
GNUNET_free (handle);
}
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