select_accounts_by_instance.c (5437B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022, 2026 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 src/backenddb/select_accounts_by_instance.c 18 * @brief Implementation of the select_accounts_by_instance function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/select_accounts_by_instance.h" 24 #include "helper.h" 25 26 27 /** 28 * Context for select_accounts(). 29 */ 30 struct SelectAccountsContext 31 { 32 /** 33 * Function to call with the results. 34 */ 35 TALER_MERCHANTDB_AccountCallback cb; 36 37 /** 38 * Closure for @e cb. 39 */ 40 void *cb_cls; 41 42 /** 43 * Database context. 44 */ 45 struct TALER_MERCHANTDB_PostgresContext *pg; 46 47 /** 48 * Merchant instance ID. 49 */ 50 const char *id; 51 52 /** 53 * Set to the return value on errors. 54 */ 55 enum GNUNET_DB_QueryStatus qs; 56 57 }; 58 59 60 /** 61 * Function to be called with the results of a SELECT statement 62 * that has returned @a num_results results about accounts. 63 * 64 * @param cls of type `struct SelectAccountsContext *` 65 * @param result the postgres result 66 * @param num_results the number of results in @a result 67 */ 68 static void 69 select_account_cb (void *cls, 70 PGresult *result, 71 unsigned int num_results) 72 { 73 struct SelectAccountsContext *lic = cls; 74 75 for (unsigned int i = 0; i < num_results; i++) 76 { 77 struct TALER_FullPayto payto; 78 char *facade_url = NULL; 79 char *extra_wire_subject_metadata = NULL; 80 json_t *credential = NULL; 81 struct TALER_MERCHANTDB_AccountDetails acc; 82 struct TALER_MerchantPrivateKeyP merchant_priv; 83 bool no_priv; 84 struct GNUNET_PQ_ResultSpec rs[] = { 85 GNUNET_PQ_result_spec_auto_from_type ("h_wire", 86 &acc.h_wire), 87 GNUNET_PQ_result_spec_auto_from_type ("salt", 88 &acc.salt), 89 GNUNET_PQ_result_spec_string ("payto_uri", 90 &payto.full_payto), 91 GNUNET_PQ_result_spec_allow_null ( 92 GNUNET_PQ_result_spec_string ("credit_facade_url", 93 &facade_url), 94 NULL), 95 GNUNET_PQ_result_spec_allow_null ( 96 GNUNET_PQ_result_spec_string ("extra_wire_subject_metadata", 97 &extra_wire_subject_metadata), 98 NULL), 99 GNUNET_PQ_result_spec_allow_null ( 100 TALER_PQ_result_spec_json ("credit_facade_credentials", 101 &credential), 102 NULL), 103 GNUNET_PQ_result_spec_bool ("active", 104 &acc.active), 105 GNUNET_PQ_result_spec_allow_null ( 106 GNUNET_PQ_result_spec_auto_from_type ("merchant_priv", 107 &merchant_priv), 108 &no_priv), 109 GNUNET_PQ_result_spec_end 110 }; 111 112 if (GNUNET_OK != 113 GNUNET_PQ_extract_result (result, 114 rs, 115 i)) 116 { 117 GNUNET_break (0); 118 lic->qs = GNUNET_DB_STATUS_HARD_ERROR; 119 return; 120 } 121 acc.instance_id = lic->id; 122 acc.payto_uri = payto; 123 acc.credit_facade_url = facade_url; 124 acc.credit_facade_credentials = credential; 125 acc.extra_wire_subject_metadata = extra_wire_subject_metadata; 126 if (NULL != lic->cb) 127 lic->cb (lic->cb_cls, 128 no_priv ? NULL : &merchant_priv, 129 &acc); 130 GNUNET_PQ_cleanup_result (rs); 131 } 132 } 133 134 135 enum GNUNET_DB_QueryStatus 136 TALER_MERCHANTDB_select_accounts_by_instance ( 137 struct TALER_MERCHANTDB_PostgresContext *pg, 138 const char *id, 139 TALER_MERCHANTDB_AccountCallback cb, 140 void *cb_cls) 141 { 142 struct SelectAccountsContext lic = { 143 .cb = cb, 144 .cb_cls = cb_cls, 145 .pg = pg, 146 .id = id 147 }; 148 struct GNUNET_PQ_QueryParam params[] = { 149 GNUNET_PQ_query_param_string (id), 150 GNUNET_PQ_query_param_end 151 }; 152 enum GNUNET_DB_QueryStatus qs; 153 154 check_connection (pg); 155 TMH_PQ_prepare_anon (pg, 156 "SELECT" 157 " ma.h_wire" 158 ",ma.salt" 159 ",ma.payto_uri" 160 ",ma.credit_facade_url" 161 ",ma.credit_facade_credentials::TEXT" 162 ",ma.extra_wire_subject_metadata" 163 ",ma.active" 164 ",mi.merchant_priv" 165 " FROM merchant_accounts ma" 166 " JOIN merchant.merchant_instances mi" 167 " ON (mi.merchant_id=$1)"); 168 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 169 "", 170 params, 171 &select_account_cb, 172 &lic); 173 if (0 > lic.qs) 174 return lic.qs; 175 return qs; 176 }