diff options
Diffstat (limited to 'src/exchange/taler-exchange-httpd_config.c')
| -rw-r--r-- | src/exchange/taler-exchange-httpd_config.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/src/exchange/taler-exchange-httpd_config.c b/src/exchange/taler-exchange-httpd_config.c index da5bf9691..257dfa6ba 100644 --- a/src/exchange/taler-exchange-httpd_config.c +++ b/src/exchange/taler-exchange-httpd_config.c @@ -1,6 +1,6 @@ /* This file is part of TALER - Copyright (C) 2015-2021 Taler Systems SA + Copyright (C) 2015-2024 Taler Systems SA TALER is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software @@ -33,18 +33,55 @@ TEH_handler_config (struct TEH_RequestContext *rc, const char *const args[]) { static struct MHD_Response *resp; + static struct GNUNET_TIME_Absolute a; + (void) args; + if ( (GNUNET_TIME_absolute_is_past (a)) && + (NULL != resp) ) + { + MHD_destroy_response (resp); + resp = NULL; + } if (NULL == resp) { + 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); resp = TALER_MHD_MAKE_JSON_PACK ( GNUNET_JSON_pack_array_steal ("supported_kyc_requirements", TALER_KYCLOGIC_get_satisfiable ()), + GNUNET_JSON_pack_object_steal ( + "currency_specification", + TALER_CONFIG_currency_specs_to_json (TEH_cspec)), GNUNET_JSON_pack_string ("currency", TEH_currency), GNUNET_JSON_pack_string ("name", "taler-exchange"), + GNUNET_JSON_pack_string ("implementation", + "urn:net:taler:specs:taler-exchange:c-reference") + , GNUNET_JSON_pack_string ("version", EXCHANGE_PROTOCOL_VERSION)); + + GNUNET_break (MHD_YES == + MHD_add_response_header (resp, + MHD_HTTP_HEADER_EXPIRES, + dat)); + GNUNET_break (MHD_YES == + MHD_add_response_header (resp, + MHD_HTTP_HEADER_CACHE_CONTROL, + "public,max-age=21600")); /* 6h */ } return MHD_queue_response (rc->connection, MHD_HTTP_OK, |