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/*
This file is part of TALER
Copyright (C) 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_post_account.c
* @brief Implementation of the POST /account request
* of the merchant's HTTP API
* @author Christian Grothoff
*/
#include "platform.h"
#include <curl/curl.h>
#include <jansson.h>
#include <microhttpd.h> /* just for HTTP status codes */
#include <gnunet/gnunet_util_lib.h>
#include "taler_merchant_service.h"
#include "merchant_api_curl_defaults.h"
#include "merchant_api_common.h"
#include <taler/taler_json_lib.h>
#include <taler/taler_curl_lib.h>
/**
* Handle for a POST /private/accounts operation.
*/
struct TALER_MERCHANT_AccountsPostHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_MERCHANT_AccountsPostCallback 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 /account request.
*
* @param cls the `struct TALER_MERCHANT_AccountPostHandle`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not in JSON
*/
static void
handle_post_account_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_MERCHANT_AccountsPostHandle *aph = cls;
const json_t *json = response;
struct TALER_MERCHANT_AccountsPostResponse apr = {
.hr.http_status = (unsigned int) response_code,
.hr.reply = json
};
aph->job = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"POST /accounts completed with response code %u\n",
(unsigned int) response_code);
switch (response_code)
{
case 0:
apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
case MHD_HTTP_OK:
{
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto ("h_wire",
&apr.details.ok.h_wire),
GNUNET_JSON_spec_fixed_auto ("salt",
&apr.details.ok.salt),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (json,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
apr.hr.http_status = 0;
apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
}
}
break;
case MHD_HTTP_BAD_REQUEST:
GNUNET_break_op (0);
apr.hr.ec = TALER_JSON_get_error_code (json);
apr.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:
apr.hr.ec = TALER_JSON_get_error_code (json);
apr.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_NOT_FOUND:
apr.hr.ec = TALER_JSON_get_error_code (json);
apr.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:
apr.hr.ec = TALER_JSON_get_error_code (json);
apr.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
apr.hr.ec = TALER_JSON_get_error_code (json);
apr.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,
&apr.hr);
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d\n",
(unsigned int) response_code,
(int) apr.hr.ec);
GNUNET_break_op (0);
break;
}
aph->cb (aph->cb_cls,
&apr);
TALER_MERCHANT_accounts_post_cancel (aph);
}
struct TALER_MERCHANT_AccountsPostHandle *
TALER_MERCHANT_accounts_post (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
struct TALER_FullPayto payto_uri,
const char *credit_facade_url,
const json_t *credit_facade_credentials,
TALER_MERCHANT_AccountsPostCallback cb,
void *cb_cls)
{
struct TALER_MERCHANT_AccountsPostHandle *aph;
json_t *req_obj;
req_obj = GNUNET_JSON_PACK (
TALER_JSON_pack_full_payto (
"payto_uri",
payto_uri),
GNUNET_JSON_pack_allow_null (
GNUNET_JSON_pack_string (
"credit_facade_url",
credit_facade_url)),
GNUNET_JSON_pack_allow_null (
GNUNET_JSON_pack_object_incref (
"credit_facade_credentials",
(json_t *) credit_facade_credentials))
);
aph = GNUNET_new (struct TALER_MERCHANT_AccountsPostHandle);
aph->ctx = ctx;
aph->cb = cb;
aph->cb_cls = cb_cls;
aph->url = TALER_url_join (backend_url,
"private/accounts",
NULL);
if (NULL == aph->url)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not construct request URL.\n");
json_decref (req_obj);
GNUNET_free (aph);
return NULL;
}
{
CURL *eh;
eh = TALER_MERCHANT_curl_easy_get_ (aph->url);
GNUNET_assert (GNUNET_OK ==
TALER_curl_easy_post (&aph->post_ctx,
eh,
req_obj));
json_decref (req_obj);
aph->job = GNUNET_CURL_job_add2 (ctx,
eh,
aph->post_ctx.headers,
&handle_post_account_finished,
aph);
GNUNET_assert (NULL != aph->job);
}
return aph;
}
void
TALER_MERCHANT_accounts_post_cancel (
struct TALER_MERCHANT_AccountsPostHandle *aph)
{
if (NULL != aph->job)
{
GNUNET_CURL_job_cancel (aph->job);
aph->job = NULL;
}
TALER_curl_easy_post_finished (&aph->post_ctx);
GNUNET_free (aph->url);
GNUNET_free (aph);
}
/* end of merchant_api_post_account.c */
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