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/*
This file is part of Sync
Copyright (C) 2020,2024 Taler Systems SA
Sync 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 3, or (at your option) any later version.
Sync 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
Sync; see the file COPYING.GPL. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file sync/sync-httpd_config.c
* @brief headers for /config handler
* @author Christian Grothoff
*/
#include "platform.h"
#include "sync-httpd_config.h"
#include <taler/taler_json_lib.h>
/*
* Protocol version history:
*
* 0: original design
* 1: adds ?fresh=y to POST backup operation to force fresh contract
* to be created
*/
MHD_RESULT
SH_handler_config (struct SH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
static struct MHD_Response *response;
static struct GNUNET_TIME_Absolute a;
(void) connection_cls;
(void) upload_data;
(void) upload_data_size;
if ( (GNUNET_TIME_absolute_is_past (a)) &&
(NULL != response) )
{
MHD_destroy_response (response);
response = NULL;
}
if (NULL == response)
{
struct GNUNET_TIME_Timestamp km;
char dat[128];
a = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_DAYS);
/* Round up to next full day to ensure the expiration
time does not become a fingerprint! */
a = GNUNET_TIME_absolute_round_down (a,
GNUNET_TIME_UNIT_DAYS);
a = GNUNET_TIME_absolute_add (a,
GNUNET_TIME_UNIT_DAYS);
/* => /config response stays at most 48h in caches! */
km = GNUNET_TIME_absolute_to_timestamp (a);
TALER_MHD_get_date_string (km.abs_time,
dat);
response = TALER_MHD_MAKE_JSON_PACK (
GNUNET_JSON_pack_string ("name",
"sync"),
GNUNET_JSON_pack_string ("implementation",
"urn:net:taler:specs:sync:c-reference"),
GNUNET_JSON_pack_uint64 ("storage_limit_in_megabytes",
SH_upload_limit_mb),
TALER_JSON_pack_amount ("liability_limit",
&SH_insurance),
TALER_JSON_pack_amount ("annual_fee",
&SH_annual_fee),
GNUNET_JSON_pack_string ("version",
"2:2:0"));
GNUNET_break (MHD_YES ==
MHD_add_response_header (response,
MHD_HTTP_HEADER_EXPIRES,
dat));
GNUNET_break (MHD_YES ==
MHD_add_response_header (response,
MHD_HTTP_HEADER_CACHE_CONTROL,
"public,max-age=21600")); /* 6h */
}
return MHD_queue_response (connection,
MHD_HTTP_OK,
response);
}
/* end of sync-httpd_config.c */
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