do_reserve_purse.c (4085B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 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/do_reserve_purse.c 18 * @brief Implementation of the do_reserve_purse function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/do_reserve_purse.h" 23 #include "helper.h" 24 25 26 enum GNUNET_DB_QueryStatus 27 TALER_EXCHANGEDB_do_reserve_purse ( 28 struct TALER_EXCHANGEDB_PostgresContext *pg, 29 const struct TALER_PurseContractPublicKeyP *purse_pub, 30 const struct TALER_PurseMergeSignatureP *merge_sig, 31 const struct GNUNET_TIME_Timestamp merge_timestamp, 32 const struct TALER_ReserveSignatureP *reserve_sig, 33 const struct TALER_Amount *purse_fee, 34 const struct TALER_ReservePublicKeyP *reserve_pub, 35 bool *in_conflict, 36 bool *no_reserve, 37 bool *insufficient_funds) 38 { 39 struct TALER_Amount zero_fee; 40 struct TALER_NormalizedPaytoHashP h_payto; 41 struct GNUNET_TIME_Timestamp reserve_expiration 42 = GNUNET_TIME_absolute_to_timestamp ( 43 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), 44 pg->idle_reserve_expiration_time)); 45 struct GNUNET_TIME_Timestamp reserve_gc 46 = GNUNET_TIME_absolute_to_timestamp ( 47 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), 48 pg->legal_reserve_expiration_time)); 49 50 struct GNUNET_PQ_QueryParam params[] = { 51 GNUNET_PQ_query_param_auto_from_type (purse_pub), 52 GNUNET_PQ_query_param_auto_from_type (merge_sig), 53 GNUNET_PQ_query_param_timestamp (&merge_timestamp), 54 GNUNET_PQ_query_param_timestamp (&reserve_expiration), 55 GNUNET_PQ_query_param_timestamp (&reserve_gc), 56 GNUNET_PQ_query_param_auto_from_type (reserve_sig), 57 GNUNET_PQ_query_param_bool (NULL == purse_fee), 58 TALER_PQ_query_param_amount (pg->conn, 59 NULL == purse_fee 60 ? &zero_fee 61 : purse_fee), 62 GNUNET_PQ_query_param_auto_from_type (reserve_pub), 63 GNUNET_PQ_query_param_auto_from_type (&h_payto), 64 GNUNET_PQ_query_param_end 65 }; 66 struct GNUNET_PQ_ResultSpec rs[] = { 67 GNUNET_PQ_result_spec_bool ("insufficient_funds", 68 insufficient_funds), 69 GNUNET_PQ_result_spec_bool ("conflict", 70 in_conflict), 71 GNUNET_PQ_result_spec_bool ("no_reserve", 72 no_reserve), 73 GNUNET_PQ_result_spec_end 74 }; 75 76 { 77 struct TALER_NormalizedPayto payto_uri; 78 79 payto_uri = TALER_reserve_make_payto (pg->exchange_url, 80 reserve_pub); 81 TALER_normalized_payto_hash (payto_uri, 82 &h_payto); 83 GNUNET_free (payto_uri.normalized_payto); 84 } 85 GNUNET_assert (GNUNET_OK == 86 TALER_amount_set_zero (pg->currency, 87 &zero_fee)); 88 PREPARE (pg, 89 "do_reserve_purse", 90 "SELECT" 91 " out_no_funds AS insufficient_funds" 92 ",out_no_reserve AS no_reserve" 93 ",out_conflict AS conflict" 94 " FROM exchange_do_reserve_purse" 95 " ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10);"); 96 97 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 98 "do_reserve_purse", 99 params, 100 rs); 101 }