diff options
Diffstat (limited to 'src/exchangedb/pg_iterate_denomination_info.c')
| -rw-r--r-- | src/exchangedb/pg_iterate_denomination_info.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/exchangedb/pg_iterate_denomination_info.c b/src/exchangedb/pg_iterate_denomination_info.c new file mode 100644 index 00000000..bf39a65a --- /dev/null +++ b/src/exchangedb/pg_iterate_denomination_info.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_iterate_denomination_info.c + * @brief Implementation of the iterate_denomination_info 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_iterate_denomination_info.h" +#include "pg_helper.h" + + +/** + * Closure for #domination_cb_helper() + */ +struct DenomIteratorContext +{ + /** + * Function to call with the results. + */ + TALER_EXCHANGEDB_DenominationCallback cb; + + /** + * Closure to pass to @e cb + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; +}; + + +/** + * Helper function for #postgres_iterate_denomination_info(). + * Calls the callback with each denomination key. + * + * @param cls a `struct DenomIteratorContext` + * @param result db results + * @param num_results number of results in @a result + */ +static void +domination_cb_helper (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct DenomIteratorContext *dic = cls; + struct PostgresClosure *pg = dic->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_EXCHANGEDB_DenominationKeyInformation issue; + struct TALER_DenominationPublicKey denom_pub; + struct TALER_DenominationHashP denom_hash; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("master_sig", + &issue.signature), + GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", + &denom_hash), + GNUNET_PQ_result_spec_timestamp ("valid_from", + &issue.start), + GNUNET_PQ_result_spec_timestamp ("expire_withdraw", + &issue.expire_withdraw), + GNUNET_PQ_result_spec_timestamp ("expire_deposit", + &issue.expire_deposit), + GNUNET_PQ_result_spec_timestamp ("expire_legal", + &issue.expire_legal), + TALER_PQ_RESULT_SPEC_AMOUNT ("coin", + &issue.value), + TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw", + &issue.fees.withdraw), + TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit", + &issue.fees.deposit), + TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh", + &issue.fees.refresh), + TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund", + &issue.fees.refund), + TALER_PQ_result_spec_denom_pub ("denom_pub", + &denom_pub), + GNUNET_PQ_result_spec_uint32 ("age_mask", + &issue.age_mask.bits), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + return; + } + + /* Unfortunately we have to carry the age mask in both, the + * TALER_DenominationPublicKey and + * TALER_EXCHANGEDB_DenominationKeyInformation at different times. + * Here we use _both_ so let's make sure the values are the same. */ + denom_pub.age_mask = issue.age_mask; + TALER_denom_pub_hash (&denom_pub, + &issue.denom_hash); + if (0 != + GNUNET_memcmp (&issue.denom_hash, + &denom_hash)) + { + GNUNET_break (0); + } + else + { + dic->cb (dic->cb_cls, + &denom_pub, + &issue); + } + TALER_denom_pub_free (&denom_pub); + } +} + + + + + + + + + + +/** + * Fetch information about all known denomination keys. + * + * @param cls the @e cls of this struct with the plugin-specific state + * @param cb function to call on each denomination key + * @param cb_cls closure for @a cb + * @return transaction status code + */ +enum GNUNET_DB_QueryStatus +TEH_PG_iterate_denomination_info (void *cls, + TALER_EXCHANGEDB_DenominationCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_end + }; + struct DenomIteratorContext dic = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg + }; + + /* Used in #postgres_iterate_denomination_info() */ + PREPARE (pg, + "denomination_iterate", + "SELECT" + " master_sig" + ",denom_pub_hash" + ",valid_from" + ",expire_withdraw" + ",expire_deposit" + ",expire_legal" + ",coin_val" /* value of this denom */ + ",coin_frac" /* fractional value of this denom */ + ",fee_withdraw_val" + ",fee_withdraw_frac" + ",fee_deposit_val" + ",fee_deposit_frac" + ",fee_refresh_val" + ",fee_refresh_frac" + ",fee_refund_val" + ",fee_refund_frac" + ",denom_pub" + ",age_mask" + " FROM denominations;"); + return GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "denomination_iterate", + params, + &domination_cb_helper, + &dic); +} |