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/*
This file is part of TALER
Copyright (C) 2020-2022 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 lib/exchange_api_management_set_global_fee.c
* @brief functions to set global fees at an exchange
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "exchange_api_curl_defaults.h"
#include "taler_exchange_service.h"
#include "taler_signatures.h"
#include "taler_curl_lib.h"
#include "taler_json_lib.h"
struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Minor context that holds body and headers.
*/
struct TALER_CURL_PostContext post_ctx;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_EXCHANGE_ManagementSetGlobalFeeCallback 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 /management/global request.
*
* @param cls the `struct TALER_EXCHANGE_ManagementAuditorEnableHandle *`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not in JSON
*/
static void
handle_set_global_fee_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh = cls;
const json_t *json = response;
struct TALER_EXCHANGE_ManagementSetGlobalFeeResponse sfr = {
.hr.http_status = (unsigned int) response_code,
.hr.reply = json
};
sgfh->job = NULL;
switch (response_code)
{
case MHD_HTTP_NO_CONTENT:
break;
case MHD_HTTP_FORBIDDEN:
sfr.hr.ec = TALER_JSON_get_error_code (json);
sfr.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_NOT_FOUND:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Server did not find handler at `%s'. Did you configure the correct exchange base URL?\n",
sgfh->url);
if (NULL != json)
{
sfr.hr.ec = TALER_JSON_get_error_code (json);
sfr.hr.hint = TALER_JSON_get_error_hint (json);
}
else
{
sfr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
sfr.hr.hint = TALER_ErrorCode_get_hint (sfr.hr.ec);
}
break;
case MHD_HTTP_CONFLICT:
sfr.hr.ec = TALER_JSON_get_error_code (json);
sfr.hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_PRECONDITION_FAILED:
sfr.hr.ec = TALER_JSON_get_error_code (json);
sfr.hr.hint = TALER_JSON_get_error_hint (json);
break;
default:
/* unexpected response code */
GNUNET_break_op (0);
sfr.hr.ec = TALER_JSON_get_error_code (json);
sfr.hr.hint = TALER_JSON_get_error_hint (json);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d for exchange management set global fee\n",
(unsigned int) response_code,
(int) sfr.hr.ec);
break;
}
if (NULL != sgfh->cb)
{
sgfh->cb (sgfh->cb_cls,
&sfr);
sgfh->cb = NULL;
}
TALER_EXCHANGE_management_set_global_fees_cancel (sgfh);
}
struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *
TALER_EXCHANGE_management_set_global_fees (
struct GNUNET_CURL_Context *ctx,
const char *exchange_base_url,
struct GNUNET_TIME_Timestamp validity_start,
struct GNUNET_TIME_Timestamp validity_end,
const struct TALER_GlobalFeeSet *fees,
struct GNUNET_TIME_Relative purse_timeout,
struct GNUNET_TIME_Relative history_expiration,
uint32_t purse_account_limit,
const struct TALER_MasterSignatureP *master_sig,
TALER_EXCHANGE_ManagementSetGlobalFeeCallback cb,
void *cb_cls)
{
struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh;
CURL *eh;
json_t *body;
sgfh = GNUNET_new (struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle);
sgfh->cb = cb;
sgfh->cb_cls = cb_cls;
sgfh->ctx = ctx;
sgfh->url = TALER_url_join (exchange_base_url,
"management/global-fee",
NULL);
if (NULL == sgfh->url)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not construct request URL.\n");
GNUNET_free (sgfh);
return NULL;
}
body = GNUNET_JSON_PACK (
GNUNET_JSON_pack_data_auto ("master_sig",
master_sig),
GNUNET_JSON_pack_timestamp ("fee_start",
validity_start),
GNUNET_JSON_pack_timestamp ("fee_end",
validity_end),
TALER_JSON_pack_amount ("history_fee",
&fees->history),
TALER_JSON_pack_amount ("account_fee",
&fees->account),
TALER_JSON_pack_amount ("purse_fee",
&fees->purse),
GNUNET_JSON_pack_time_rel ("purse_timeout",
purse_timeout),
GNUNET_JSON_pack_time_rel ("history_expiration",
history_expiration),
GNUNET_JSON_pack_uint64 ("purse_account_limit",
purse_account_limit));
eh = TALER_EXCHANGE_curl_easy_get_ (sgfh->url);
if ( (NULL == eh) ||
(GNUNET_OK !=
TALER_curl_easy_post (&sgfh->post_ctx,
eh,
body)) )
{
GNUNET_break (0);
if (NULL != eh)
curl_easy_cleanup (eh);
json_decref (body);
GNUNET_free (sgfh->url);
GNUNET_free (sgfh);
return NULL;
}
json_decref (body);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Requesting URL '%s'\n",
sgfh->url);
sgfh->job = GNUNET_CURL_job_add2 (ctx,
eh,
sgfh->post_ctx.headers,
&handle_set_global_fee_finished,
sgfh);
if (NULL == sgfh->job)
{
TALER_EXCHANGE_management_set_global_fees_cancel (sgfh);
return NULL;
}
return sgfh;
}
void
TALER_EXCHANGE_management_set_global_fees_cancel (
struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh)
{
if (NULL != sgfh->job)
{
GNUNET_CURL_job_cancel (sgfh->job);
sgfh->job = NULL;
}
TALER_curl_easy_post_finished (&sgfh->post_ctx);
GNUNET_free (sgfh->url);
GNUNET_free (sgfh);
}
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