diff options
Diffstat (limited to 'src/exchangedb/pg_select_recoup_above_serial_id.c')
| -rw-r--r-- | src/exchangedb/pg_select_recoup_above_serial_id.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/exchangedb/pg_select_recoup_above_serial_id.c b/src/exchangedb/pg_select_recoup_above_serial_id.c new file mode 100644 index 000000000..5791ee500 --- /dev/null +++ b/src/exchangedb/pg_select_recoup_above_serial_id.c @@ -0,0 +1,194 @@ +/* + This file is part of TALER + Copyright (C) 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 exchangedb/pg_select_recoup_above_serial_id.c + * @brief Implementation of the select_recoup_above_serial_id function for Postgres + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_select_recoup_above_serial_id.h" +#include "pg_helper.h" + + +/** + * Closure for #recoup_serial_helper_cb(). + */ +struct RecoupSerialContext +{ + + /** + * Callback to call. + */ + TALER_EXCHANGEDB_RecoupCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Status code, set to #GNUNET_SYSERR on hard errors. + */ + enum GNUNET_GenericReturnValue status; +}; + + +/** + * Helper function to be called with the results of a SELECT statement + * that has returned @a num_results results. + * + * @param cls closure of type `struct RecoupSerialContext` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +recoup_serial_helper_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct RecoupSerialContext *psc = cls; + struct PostgresClosure *pg = psc->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + uint64_t rowid; + struct TALER_ReservePublicKeyP reserve_pub; + struct TALER_CoinPublicInfo coin; + struct TALER_CoinSpendSignatureP coin_sig; + union GNUNET_CRYPTO_BlindingSecretP coin_blind; + struct TALER_Amount amount; + struct TALER_DenominationPublicKey denom_pub; + struct TALER_BlindedCoinHashP h_blind_ev; + struct GNUNET_TIME_Timestamp timestamp; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_uint64 ("recoup_uuid", + &rowid), + GNUNET_PQ_result_spec_timestamp ("recoup_timestamp", + ×tamp), + GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", + &reserve_pub), + GNUNET_PQ_result_spec_auto_from_type ("coin_pub", + &coin.coin_pub), + TALER_PQ_result_spec_denom_pub ("denom_pub", + &denom_pub), + GNUNET_PQ_result_spec_auto_from_type ("coin_sig", + &coin_sig), + GNUNET_PQ_result_spec_auto_from_type ("coin_blind", + &coin_blind), + GNUNET_PQ_result_spec_auto_from_type ("h_blind_ev", + &h_blind_ev), + GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", + &coin.denom_pub_hash), + GNUNET_PQ_result_spec_allow_null ( + GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash", + &coin.h_age_commitment), + &coin.no_age_commitment), + TALER_PQ_result_spec_denom_sig ("denom_sig", + &coin.denom_sig), + TALER_PQ_RESULT_SPEC_AMOUNT ("amount", + &amount), + GNUNET_PQ_result_spec_end + }; + int ret; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + psc->status = GNUNET_SYSERR; + return; + } + ret = psc->cb (psc->cb_cls, + rowid, + timestamp, + &amount, + &reserve_pub, + &coin, + &denom_pub, + &coin_sig, + &coin_blind); + GNUNET_PQ_cleanup_result (rs); + if (GNUNET_OK != ret) + break; + } +} + + +enum GNUNET_DB_QueryStatus +TEH_PG_select_recoup_above_serial_id ( + void *cls, + uint64_t serial_id, + TALER_EXCHANGEDB_RecoupCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_uint64 (&serial_id), + GNUNET_PQ_query_param_end + }; + struct RecoupSerialContext psc = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg, + .status = GNUNET_OK + }; + enum GNUNET_DB_QueryStatus qs; + + PREPARE (pg, + "recoup_get_incr", + "SELECT" + " recoup_uuid" + ",recoup_timestamp" + ",reserves.reserve_pub" + ",coins.coin_pub" + ",coin_sig" + ",coin_blind" + ",ro.h_blind_ev" + ",denoms.denom_pub_hash" + ",coins.denom_sig" + ",coins.age_commitment_hash" + ",denoms.denom_pub" + ",amount" + " FROM recoup" + " JOIN known_coins coins" + " USING (coin_pub)" + " JOIN reserves_out ro" + " USING (reserve_out_serial_id)" + " JOIN reserves" + " USING (reserve_uuid)" + " JOIN denominations denoms" + " ON (coins.denominations_serial = denoms.denominations_serial)" + " WHERE recoup_uuid>=$1" + " ORDER BY recoup_uuid ASC;"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "recoup_get_incr", + params, + &recoup_serial_helper_cb, + &psc); + if (GNUNET_OK != psc.status) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; +} |