From 468006c60bf6bbdd4d44b80a3ac770168e5e808a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=96zg=C3=BCr=20Kesim?= Date: Wed, 1 Mar 2023 11:14:30 +0100 Subject: WiP: age-withdraw implementation, part 2/n Commit phase of the age-withdraw protocol implemented, according to https://docs.taler.net/core/api-exchange.html#withdraw-with-age-restriction - added new files, forgot in previous commit --- src/exchangedb/pg_get_age_withdraw_info.c | 80 +++++++++++++++++++++++++++++++ src/exchangedb/pg_get_age_withdraw_info.h | 45 +++++++++++++++++ 2 files changed, 125 insertions(+) create mode 100644 src/exchangedb/pg_get_age_withdraw_info.c create mode 100644 src/exchangedb/pg_get_age_withdraw_info.h (limited to 'src/exchangedb') diff --git a/src/exchangedb/pg_get_age_withdraw_info.c b/src/exchangedb/pg_get_age_withdraw_info.c new file mode 100644 index 000000000..7662d4b51 --- /dev/null +++ b/src/exchangedb/pg_get_age_withdraw_info.c @@ -0,0 +1,80 @@ +/* + 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 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 + */ +/** + * @file exchangedb/pg_get_age_withdraw_info.c + * @brief Implementation of the get_age_withdraw_info function for Postgres + * @author Özgür Kesim + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_get_age_withdraw_info.h" +#include "pg_helper.h" + + +enum GNUNET_DB_QueryStatus +TEH_PG_get_age_withdraw_info ( + void *cls, + const struct TALER_ReservePublicKeyP *reserve_pub, + const struct TALER_AgeWithdrawCommitmentHashP *ach, + struct TALER_EXCHANGEDB_AgeWithdrawCommitment *awc) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (ach), + GNUNET_PQ_query_param_end + }; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("h_commitment", + &awc->h_commitment), + GNUNET_PQ_result_spec_auto_from_type ("reserve_sig", + &awc->reserve_sig), + GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", + &awc->reserve_pub), + GNUNET_PQ_result_spec_uint32 ("max_age_group", + &awc->max_age_group), + TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", + &awc->amount_with_fee), + GNUNET_PQ_result_spec_uint32 ("noreveal_index", + &awc->noreveal_index), + GNUNET_PQ_result_spec_timestamp ("timtestamp", + &awc->timestamp), + GNUNET_PQ_result_spec_end + }; + + /* Used in #postgres_get_age_withdraw_info() to + locate the response for a /reserve/$RESERVE_PUB/age-withdraw request using + the hash of the blinded message. Used to make sure + /reserve/$RESERVE_PUB/age-withdraw requests are idempotent. */ + PREPARE (pg, + "get_age_withdraw_info", + "SELECT" + " h_commitment" + ",reserve_sig" + ",reserve_pub" + ",max_age_group" + ",amount_with_fee_val" + ",amount_with_fee_frac" + ",noreveal_index" + ",timestamp" + " FROM withdraw_age_commitments" + " WHERE h_commitment=$1;"); + return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, + "get_age_withdraw_info", + params, + rs); +} diff --git a/src/exchangedb/pg_get_age_withdraw_info.h b/src/exchangedb/pg_get_age_withdraw_info.h new file mode 100644 index 000000000..0844b1a19 --- /dev/null +++ b/src/exchangedb/pg_get_age_withdraw_info.h @@ -0,0 +1,45 @@ +/* + 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 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 + */ +/** + * @file exchangedb/pg_get_age_withdraw_info.h + * @brief implementation of the get_age_withdraw_info function for Postgres + * @author Özgür KESIM + */ +#ifndef PG_GET_AGE_WITHDRAW_INFO_H +#define PG_GET_AGE_WITHDRAW_INFO_H + +#include "taler_util.h" +#include "taler_json_lib.h" +#include "taler_exchangedb_plugin.h" + +/** + * Locate the response for a age-withdraw request under a hash that uniquely + * identifies the age-withdraw operation. Used to ensure idempotency of the + * request. + * + * @param cls the @e cls of this struct with the plugin-specific state + * @param reserve_pub public key of the reserve for which the age-withdraw request is made + * @param ach hash that uniquely identifies the age-withdraw operation + * @param[out] awc corresponding details of the previous age-withdraw request if an entry was found + * @return statement execution status + */ +enum GNUNET_DB_QueryStatus +TEH_PG_get_age_withdraw_info ( + void *cls, + const struct TALER_ReservePublicKeyP *reserve_pub, + const struct TALER_AgeWithdrawCommitmentHashP *ach, + struct TALER_EXCHANGEDB_AgeWithdrawCommitment *awc); +#endif -- cgit v1.2.3