pg_lookup_kyc_history.c (5762B)
1 /* 2 This file is part of TALER 3 Copyright (C) 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/pg_lookup_kyc_history.c 18 * @brief Implementation of the lookup_kyc_history 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_lookup_kyc_history.h" 26 #include "pg_helper.h" 27 28 /** 29 * Closure for callbacks called from #TEH_PG_lookup_kyc_history() 30 */ 31 struct KycHistoryContext 32 { 33 34 /** 35 * Function to call on each result. 36 */ 37 TALER_EXCHANGEDB_KycHistoryCallback cb; 38 39 /** 40 * Closure for @e cb. 41 */ 42 void *cb_cls; 43 44 /** 45 * Plugin context. 46 */ 47 struct PostgresClosure *pg; 48 49 /** 50 * Set to 'true' if the transaction failed. 51 */ 52 bool failed; 53 54 }; 55 56 57 /** 58 * Function to be called with the results of a SELECT statement 59 * that has returned @a num_results results. 60 * 61 * @param cls closure of type `struct KycHistoryContext` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 handle_kyc_entry (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct KycHistoryContext *khc = cls; 71 72 for (unsigned int i = 0; i < num_results; i++) 73 { 74 char *provider_name = NULL; 75 bool finished; 76 uint32_t error_code; 77 char *error_message = NULL; 78 char *provider_user_id = NULL; 79 char *provider_legitimization_id = NULL; 80 struct GNUNET_TIME_Timestamp collection_time; 81 struct GNUNET_TIME_Absolute expiration_time 82 = GNUNET_TIME_UNIT_ZERO_ABS; 83 void *encrypted_attributes; 84 size_t encrypted_attributes_len; 85 86 struct GNUNET_PQ_ResultSpec rs[] = { 87 GNUNET_PQ_result_spec_allow_null ( 88 GNUNET_PQ_result_spec_string ("provider_name", 89 &provider_name), 90 NULL), 91 GNUNET_PQ_result_spec_bool ("finished", 92 &finished), 93 GNUNET_PQ_result_spec_uint32 ("error_code", 94 &error_code), 95 GNUNET_PQ_result_spec_allow_null ( 96 GNUNET_PQ_result_spec_string ("error_message", 97 &error_message), 98 NULL), 99 GNUNET_PQ_result_spec_allow_null ( 100 GNUNET_PQ_result_spec_string ("provider_user_id", 101 &provider_user_id), 102 NULL), 103 GNUNET_PQ_result_spec_allow_null ( 104 GNUNET_PQ_result_spec_string ("provider_legitimization_id", 105 &provider_legitimization_id), 106 NULL), 107 GNUNET_PQ_result_spec_timestamp ("collection_time", 108 &collection_time), 109 GNUNET_PQ_result_spec_allow_null ( 110 GNUNET_PQ_result_spec_absolute_time ("expiration_time", 111 &expiration_time), 112 NULL), 113 GNUNET_PQ_result_spec_variable_size ("encrypted_attributes", 114 &encrypted_attributes, 115 &encrypted_attributes_len), 116 GNUNET_PQ_result_spec_end 117 }; 118 119 if (GNUNET_OK != 120 GNUNET_PQ_extract_result (result, 121 rs, 122 i)) 123 { 124 GNUNET_break (0); 125 khc->failed = true; 126 return; 127 } 128 khc->cb (khc->cb_cls, 129 provider_name, 130 finished, 131 (enum TALER_ErrorCode) error_code, 132 error_message, 133 provider_user_id, 134 provider_legitimization_id, 135 collection_time, 136 expiration_time, 137 encrypted_attributes_len, 138 encrypted_attributes); 139 GNUNET_PQ_cleanup_result (rs); 140 } 141 } 142 143 144 enum GNUNET_DB_QueryStatus 145 TEH_PG_lookup_kyc_history ( 146 void *cls, 147 const struct TALER_NormalizedPaytoHashP *h_payto, 148 TALER_EXCHANGEDB_KycHistoryCallback cb, 149 void *cb_cls) 150 { 151 struct PostgresClosure *pg = cls; 152 struct KycHistoryContext khc = { 153 .pg = pg, 154 .cb = cb, 155 .cb_cls = cb_cls 156 }; 157 struct GNUNET_PQ_QueryParam params[] = { 158 GNUNET_PQ_query_param_auto_from_type (h_payto), 159 GNUNET_PQ_query_param_end 160 }; 161 enum GNUNET_DB_QueryStatus qs; 162 163 PREPARE (pg, 164 "lookup_kyc_history", 165 "SELECT" 166 " lp.provider_name" 167 ",lp.finished" 168 ",lp.error_code" 169 ",lp.error_message" 170 ",lp.provider_user_id" 171 ",lp.provider_legitimization_id" 172 ",ka.collection_time" 173 ",ka.expiration_time" 174 ",ka.encrypted_attributes" 175 " FROM kyc_attributes ka" 176 " JOIN legitimization_processes lp" 177 " ON (ka.legitimization_serial = lp.legitimization_process_serial_id)" 178 " WHERE ka.h_payto=$1" 179 " ORDER BY ka.collection_time DESC;"); 180 181 qs = GNUNET_PQ_eval_prepared_multi_select ( 182 pg->conn, 183 "lookup_kyc_history", 184 params, 185 &handle_kyc_entry, 186 &khc); 187 if (qs <= 0) 188 return qs; 189 if (khc.failed) 190 { 191 GNUNET_break (0); 192 return GNUNET_DB_STATUS_HARD_ERROR; 193 } 194 return qs; 195 }