pg_lookup_login_tokens.c (5637B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2025 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 backenddb/pg_lookup_login_tokens.c 18 * @brief Implementation of the lookup_login_tokens function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "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_login_tokens.h" 26 #include "pg_helper.h" 27 28 /** 29 * Context used for TMH_PG_lookup_products(). 30 */ 31 struct LookupLoginTokensContext 32 { 33 /** 34 * Function to call with the results. 35 */ 36 TALER_MERCHANTDB_LoginTokensCallback cb; 37 38 /** 39 * Closure for @a cb. 40 */ 41 void *cb_cls; 42 43 /** 44 * Did database result extraction fail? 45 */ 46 bool extract_failed; 47 }; 48 49 50 /** 51 * Function to be called with the results of a SELECT statement 52 * that has returned @a num_results results about products. 53 * 54 * @param[in,out] cls of type `struct LookupProductsContext *` 55 * @param result the postgres result 56 * @param num_results the number of results in @a result 57 */ 58 static void 59 lookup_login_tokens_cb (void *cls, 60 PGresult *result, 61 unsigned int num_results) 62 { 63 struct LookupLoginTokensContext *plc = cls; 64 65 for (unsigned int i = 0; i < num_results; i++) 66 { 67 uint32_t validity_scope; 68 uint64_t serial; 69 struct GNUNET_TIME_Timestamp expiration_time; 70 struct GNUNET_TIME_Timestamp creation_time; 71 char *description; 72 struct TALER_MERCHANTDB_LoginTokenP token; 73 struct GNUNET_PQ_ResultSpec rs[] = { 74 GNUNET_PQ_result_spec_auto_from_type ("token", 75 &token), 76 GNUNET_PQ_result_spec_uint32 ("validity_scope", 77 &validity_scope), 78 GNUNET_PQ_result_spec_string ("description", 79 &description), 80 GNUNET_PQ_result_spec_timestamp ("creation_time", 81 &creation_time), 82 GNUNET_PQ_result_spec_timestamp ("expiration_time", 83 &expiration_time), 84 GNUNET_PQ_result_spec_uint64 ("serial", 85 &serial), 86 GNUNET_PQ_result_spec_end 87 }; 88 89 if (GNUNET_OK != 90 GNUNET_PQ_extract_result (result, 91 rs, 92 i)) 93 { 94 GNUNET_break (0); 95 plc->extract_failed = true; 96 return; 97 } 98 plc->cb (plc->cb_cls, 99 creation_time, 100 expiration_time, 101 validity_scope, 102 description, 103 serial); 104 GNUNET_PQ_cleanup_result (rs); 105 } 106 } 107 108 109 enum GNUNET_DB_QueryStatus 110 TMH_PG_lookup_login_tokens (void *cls, 111 const char *instance_id, 112 uint64_t offset, 113 int64_t limit, 114 TALER_MERCHANTDB_LoginTokensCallback cb, 115 void *cb_cls) 116 { 117 struct PostgresClosure *pg = cls; 118 struct GNUNET_TIME_Timestamp now = GNUNET_TIME_timestamp_get (); 119 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 120 struct LookupLoginTokensContext plc = { 121 .cb = cb, 122 .cb_cls = cb_cls, 123 /* Can be overwritten by the lookup_products_cb */ 124 .extract_failed = false, 125 }; 126 struct GNUNET_PQ_QueryParam params[] = { 127 GNUNET_PQ_query_param_string (instance_id), 128 GNUNET_PQ_query_param_timestamp (&now), 129 GNUNET_PQ_query_param_uint64 (&offset), 130 GNUNET_PQ_query_param_uint64 (&plimit), 131 GNUNET_PQ_query_param_end 132 }; 133 enum GNUNET_DB_QueryStatus qs; 134 135 check_connection (pg); 136 PREPARE (pg, 137 "lookup_login_tokens_asc", 138 "SELECT" 139 " token" 140 ",serial" 141 ",creation_time" 142 ",expiration_time" 143 ",validity_scope" 144 ",description" 145 " FROM merchant_login_tokens" 146 " JOIN merchant_instances" 147 " USING (merchant_serial)" 148 " WHERE merchant_instances.merchant_id=$1" 149 " AND expiration_time > $2" 150 " AND serial > $3" 151 " ORDER BY serial ASC" 152 " LIMIT $4"); 153 PREPARE (pg, 154 "lookup_login_tokens_desc", 155 "SELECT" 156 " token" 157 ",serial" 158 ",creation_time" 159 ",expiration_time" 160 ",validity_scope" 161 ",description" 162 " FROM merchant_login_tokens" 163 " JOIN merchant_instances" 164 " USING (merchant_serial)" 165 " WHERE merchant_instances.merchant_id=$1" 166 " AND expiration_time > $2" 167 " AND serial < $3" 168 " ORDER BY serial DESC" 169 " LIMIT $4"); 170 qs = GNUNET_PQ_eval_prepared_multi_select ( 171 pg->conn, 172 (limit > 0) 173 ? "lookup_login_tokens_asc" 174 : "lookup_login_tokens_desc", 175 params, 176 &lookup_login_tokens_cb, 177 &plc); 178 /* If there was an error inside lookup_products_cb, return a hard error. */ 179 if (plc.extract_failed) 180 return GNUNET_DB_STATUS_HARD_ERROR; 181 return qs; 182 }