pg_do_reserve_purse.c (5098B)
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/pg_do_reserve_purse.c 18 * @brief Implementation of the do_reserve_purse function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/platform.h" 22 #include "taler/taler_error_codes.h" 23 #include "taler/taler_dbevents.h" 24 #include "taler/taler_pq_lib.h" 25 #include "pg_do_reserve_purse.h" 26 #include "pg_helper.h" 27 28 29 /** 30 * Function called insert request to merge a purse into a reserve by the 31 * respective purse merge key. The purse must not have been merged into a 32 * different reserve. 33 * 34 * @param cls the @e cls of this struct with the plugin-specific state 35 * @param purse_pub purse to merge 36 * @param merge_sig signature affirming the merge 37 * @param merge_timestamp time of the merge 38 * @param reserve_sig signature of the reserve affirming the merge 39 * @param purse_fee amount to charge the reserve for the purse creation, NULL to use the quota 40 * @param reserve_pub public key of the reserve to credit 41 * @param[out] in_conflict set to true if @a purse_pub was merged into a different reserve already 42 * @param[out] no_reserve set to true if @a reserve_pub is not a known reserve 43 * @param[out] insufficient_funds set to true if @a reserve_pub has insufficient capacity to create another purse 44 * @return transaction status code 45 */ 46 enum GNUNET_DB_QueryStatus 47 TEH_PG_do_reserve_purse ( 48 void *cls, 49 const struct TALER_PurseContractPublicKeyP *purse_pub, 50 const struct TALER_PurseMergeSignatureP *merge_sig, 51 const struct GNUNET_TIME_Timestamp merge_timestamp, 52 const struct TALER_ReserveSignatureP *reserve_sig, 53 const struct TALER_Amount *purse_fee, 54 const struct TALER_ReservePublicKeyP *reserve_pub, 55 bool *in_conflict, 56 bool *no_reserve, 57 bool *insufficient_funds) 58 { 59 struct PostgresClosure *pg = cls; 60 struct TALER_Amount zero_fee; 61 struct TALER_NormalizedPaytoHashP h_payto; 62 struct GNUNET_TIME_Timestamp reserve_expiration 63 = GNUNET_TIME_absolute_to_timestamp ( 64 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), 65 pg->idle_reserve_expiration_time)); 66 struct GNUNET_TIME_Timestamp reserve_gc 67 = GNUNET_TIME_absolute_to_timestamp ( 68 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), 69 pg->legal_reserve_expiration_time)); 70 71 struct GNUNET_PQ_QueryParam params[] = { 72 GNUNET_PQ_query_param_auto_from_type (purse_pub), 73 GNUNET_PQ_query_param_auto_from_type (merge_sig), 74 GNUNET_PQ_query_param_timestamp (&merge_timestamp), 75 GNUNET_PQ_query_param_timestamp (&reserve_expiration), 76 GNUNET_PQ_query_param_timestamp (&reserve_gc), 77 GNUNET_PQ_query_param_auto_from_type (reserve_sig), 78 GNUNET_PQ_query_param_bool (NULL == purse_fee), 79 TALER_PQ_query_param_amount (pg->conn, 80 NULL == purse_fee 81 ? &zero_fee 82 : purse_fee), 83 GNUNET_PQ_query_param_auto_from_type (reserve_pub), 84 GNUNET_PQ_query_param_auto_from_type (&h_payto), 85 GNUNET_PQ_query_param_end 86 }; 87 struct GNUNET_PQ_ResultSpec rs[] = { 88 GNUNET_PQ_result_spec_bool ("insufficient_funds", 89 insufficient_funds), 90 GNUNET_PQ_result_spec_bool ("conflict", 91 in_conflict), 92 GNUNET_PQ_result_spec_bool ("no_reserve", 93 no_reserve), 94 GNUNET_PQ_result_spec_end 95 }; 96 97 { 98 struct TALER_NormalizedPayto payto_uri; 99 100 payto_uri = TALER_reserve_make_payto (pg->exchange_url, 101 reserve_pub); 102 TALER_normalized_payto_hash (payto_uri, 103 &h_payto); 104 GNUNET_free (payto_uri.normalized_payto); 105 } 106 GNUNET_assert (GNUNET_OK == 107 TALER_amount_set_zero (pg->currency, 108 &zero_fee)); 109 PREPARE (pg, 110 "call_reserve_purse", 111 "SELECT" 112 " out_no_funds AS insufficient_funds" 113 ",out_no_reserve AS no_reserve" 114 ",out_conflict AS conflict" 115 " FROM exchange_do_reserve_purse" 116 " ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10);"); 117 118 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 119 "call_reserve_purse", 120 params, 121 rs); 122 }