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Diffstat (limited to 'src/exchangedb/pg_lookup_wire_transfer.c')
| -rw-r--r-- | src/exchangedb/pg_lookup_wire_transfer.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/exchangedb/pg_lookup_wire_transfer.c b/src/exchangedb/pg_lookup_wire_transfer.c new file mode 100644 index 000000000..394251702 --- /dev/null +++ b/src/exchangedb/pg_lookup_wire_transfer.c @@ -0,0 +1,187 @@ +/* + 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_lookup_wire_tranfer.c + * @brief Implementation of the lookup_wire_tranfer 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_lookup_wire_transfer.h" +#include "pg_helper.h" + +/** + * Closure for #handle_wt_result. + */ +struct WireTransferResultContext +{ + /** + * Function to call on each result. + */ + TALER_EXCHANGEDB_AggregationDataCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Set to #GNUNET_SYSERR on serious errors. + */ + int status; +}; + + +/** + * Function to be called with the results of a SELECT statement + * that has returned @a num_results results. Helper function + * for #postgres_lookup_wire_transfer(). + * + * @param cls closure of type `struct WireTransferResultContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +handle_wt_result (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct WireTransferResultContext *ctx = cls; + struct PostgresClosure *pg = ctx->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + uint64_t rowid; + struct TALER_PrivateContractHashP h_contract_terms; + struct TALER_CoinSpendPublicKeyP coin_pub; + struct TALER_PaytoHashP h_payto; + struct TALER_MerchantPublicKeyP merchant_pub; + struct GNUNET_TIME_Timestamp exec_time; + struct TALER_Amount amount_with_fee; + struct TALER_Amount deposit_fee; + struct TALER_DenominationPublicKey denom_pub; + char *payto_uri; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_uint64 ("aggregation_serial_id", &rowid), + GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms", + &h_contract_terms), + GNUNET_PQ_result_spec_string ("payto_uri", + &payto_uri), + GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto", + &h_payto), + TALER_PQ_result_spec_denom_pub ("denom_pub", + &denom_pub), + GNUNET_PQ_result_spec_auto_from_type ("coin_pub", + &coin_pub), + GNUNET_PQ_result_spec_auto_from_type ("merchant_pub", + &merchant_pub), + GNUNET_PQ_result_spec_timestamp ("execution_date", + &exec_time), + TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", + &amount_with_fee), + TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit", + &deposit_fee), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + ctx->status = GNUNET_SYSERR; + return; + } + ctx->cb (ctx->cb_cls, + rowid, + &merchant_pub, + payto_uri, + &h_payto, + exec_time, + &h_contract_terms, + &denom_pub, + &coin_pub, + &amount_with_fee, + &deposit_fee); + GNUNET_PQ_cleanup_result (rs); + } +} + +enum GNUNET_DB_QueryStatus +TEH_PG_lookup_wire_transfer ( + void *cls, + const struct TALER_WireTransferIdentifierRawP *wtid, + TALER_EXCHANGEDB_AggregationDataCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (wtid), + GNUNET_PQ_query_param_end + }; + struct WireTransferResultContext ctx; + enum GNUNET_DB_QueryStatus qs; + + ctx.cb = cb; + ctx.cb_cls = cb_cls; + ctx.pg = pg; + ctx.status = GNUNET_OK; + /* check if the melt record exists and get it */ + /* Used in #postgres_lookup_wire_transfer */ + PREPARE (pg, + "lookup_transactions", + "SELECT" + " aggregation_serial_id" + ",deposits.h_contract_terms" + ",payto_uri" + ",wire_targets.wire_target_h_payto" + ",kc.coin_pub" + ",deposits.merchant_pub" + ",wire_out.execution_date" + ",deposits.amount_with_fee_val" + ",deposits.amount_with_fee_frac" + ",denom.fee_deposit_val" + ",denom.fee_deposit_frac" + ",denom.denom_pub" + " FROM aggregation_tracking" + " JOIN deposits" + " USING (deposit_serial_id)" + " JOIN wire_targets" + " USING (wire_target_h_payto)" + " JOIN known_coins kc" + " USING (coin_pub)" + " JOIN denominations denom" + " USING (denominations_serial)" + " JOIN wire_out" + " USING (wtid_raw)" + " WHERE wtid_raw=$1;"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "lookup_transactions", + params, + &handle_wt_result, + &ctx); + if (GNUNET_OK != ctx.status) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; +} |