pg_insert_contract.c (3337B)
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_insert_contract.c 18 * @brief Implementation of the insert_contract 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_insert_contract.h" 26 #include "pg_select_contract_by_purse.h" 27 #include "pg_helper.h" 28 29 enum GNUNET_DB_QueryStatus 30 TEH_PG_insert_contract ( 31 void *cls, 32 const struct TALER_PurseContractPublicKeyP *purse_pub, 33 const struct TALER_EncryptedContract *econtract, 34 bool *in_conflict) 35 { 36 struct PostgresClosure *pg = cls; 37 enum GNUNET_DB_QueryStatus qs; 38 struct GNUNET_PQ_QueryParam params[] = { 39 GNUNET_PQ_query_param_auto_from_type (purse_pub), 40 GNUNET_PQ_query_param_auto_from_type (&econtract->contract_pub), 41 GNUNET_PQ_query_param_fixed_size (econtract->econtract, 42 econtract->econtract_size), 43 GNUNET_PQ_query_param_auto_from_type (&econtract->econtract_sig), 44 GNUNET_PQ_query_param_end 45 }; 46 47 *in_conflict = false; 48 /* Used in #postgres_insert_contract() */ 49 PREPARE (pg, 50 "insert_contract", 51 "INSERT INTO contracts" 52 " (purse_pub" 53 " ,pub_ckey" 54 " ,e_contract" 55 " ,contract_sig" 56 " ,purse_expiration" 57 " ) SELECT " 58 " $1, $2, $3, $4, purse_expiration" 59 " FROM purse_requests" 60 " WHERE purse_pub=$1" 61 " ON CONFLICT DO NOTHING;"); 62 qs = GNUNET_PQ_eval_prepared_non_select (pg->conn, 63 "insert_contract", 64 params); 65 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs) 66 return qs; 67 { 68 struct TALER_EncryptedContract econtract2; 69 70 qs = TEH_PG_select_contract_by_purse (pg, 71 purse_pub, 72 &econtract2); 73 if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs) 74 { 75 GNUNET_break (0); 76 return GNUNET_DB_STATUS_HARD_ERROR; 77 } 78 if ( (0 == GNUNET_memcmp (&econtract->contract_pub, 79 &econtract2.contract_pub)) && 80 (econtract2.econtract_size == 81 econtract->econtract_size) && 82 (0 == memcmp (econtract2.econtract, 83 econtract->econtract, 84 econtract->econtract_size)) ) 85 { 86 GNUNET_free (econtract2.econtract); 87 return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS; 88 } 89 GNUNET_free (econtract2.econtract); 90 *in_conflict = true; 91 return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT; 92 } 93 }