get_wire_hash_for_contract.c (3006B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023, 2024 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file exchangedb/get_wire_hash_for_contract.c 18 * @brief Implementation of the get_wire_hash_for_contract function for Postgres 19 * @author Özgür Kesim 20 */ 21 #include "exchangedb_lib.h" 22 #include "taler/taler_pq_lib.h" 23 #include "exchange-database/get_wire_hash_for_contract.h" 24 #include "exchange-database/compute_shard.h" 25 #include "helper.h" 26 27 28 enum GNUNET_DB_QueryStatus 29 TALER_EXCHANGEDB_get_wire_hash_for_contract ( 30 struct TALER_EXCHANGEDB_PostgresContext *pg, 31 const struct TALER_MerchantPublicKeyP *merchant_pub, 32 const struct TALER_PrivateContractHashP *h_contract_terms, 33 struct TALER_MerchantWireHashP *h_wire) 34 { 35 enum GNUNET_DB_QueryStatus qs; 36 uint64_t deposit_shard = TALER_EXCHANGEDB_compute_shard (merchant_pub); 37 struct GNUNET_PQ_QueryParam params[] = { 38 GNUNET_PQ_query_param_uint64 (&deposit_shard), 39 GNUNET_PQ_query_param_auto_from_type (merchant_pub), 40 GNUNET_PQ_query_param_auto_from_type (h_contract_terms), 41 GNUNET_PQ_query_param_end 42 }; 43 struct TALER_FullPayto payto_uri; 44 struct TALER_WireSaltP wire_salt; 45 struct GNUNET_PQ_ResultSpec rs[] = { 46 GNUNET_PQ_result_spec_auto_from_type ("wire_salt", 47 &wire_salt), 48 GNUNET_PQ_result_spec_string ("payto_uri", 49 &payto_uri.full_payto), 50 GNUNET_PQ_result_spec_end 51 }; 52 53 /* (shard, merchant_pub, h_contract_terms) is unique in batch_deposits */ 54 PREPARE (pg, 55 "get_wire_hash_for_contract", 56 "SELECT" 57 " bdep.wire_salt" 58 " ,wt.payto_uri" 59 " FROM batch_deposits bdep" 60 " JOIN wire_targets wt" 61 " USING (wire_target_h_payto)" 62 " WHERE bdep.shard=$1" 63 " AND bdep.merchant_pub=$2" 64 " AND bdep.h_contract_terms=$3"); 65 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 66 "get_wire_hash_for_contract", 67 params, 68 rs); 69 if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs) 70 { 71 TALER_merchant_wire_signature_hash (payto_uri, 72 &wire_salt, 73 h_wire); 74 GNUNET_PQ_cleanup_result (rs); 75 } 76 return qs; 77 }