lookup_login_tokens.c (5562B)
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 src/backenddb/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_pq_lib.h> 23 #include "merchant-database/lookup_login_tokens.h" 24 #include "helper.h" 25 26 /** 27 * Context used for TALER_MERCHANTDB_lookup_products(). 28 */ 29 struct LookupLoginTokensContext 30 { 31 /** 32 * Function to call with the results. 33 */ 34 TALER_MERCHANTDB_LoginTokensCallback cb; 35 36 /** 37 * Closure for @a cb. 38 */ 39 void *cb_cls; 40 41 /** 42 * Did database result extraction fail? 43 */ 44 bool extract_failed; 45 }; 46 47 48 /** 49 * Function to be called with the results of a SELECT statement 50 * that has returned @a num_results results about products. 51 * 52 * @param[in,out] cls of type `struct LookupProductsContext *` 53 * @param result the postgres result 54 * @param num_results the number of results in @a result 55 */ 56 static void 57 lookup_login_tokens_cb (void *cls, 58 PGresult *result, 59 unsigned int num_results) 60 { 61 struct LookupLoginTokensContext *plc = cls; 62 63 for (unsigned int i = 0; i < num_results; i++) 64 { 65 uint32_t validity_scope; 66 uint64_t serial; 67 struct GNUNET_TIME_Timestamp expiration_time; 68 struct GNUNET_TIME_Timestamp creation_time; 69 char *description; 70 struct TALER_MERCHANTDB_LoginTokenP token; 71 struct GNUNET_PQ_ResultSpec rs[] = { 72 GNUNET_PQ_result_spec_auto_from_type ("token", 73 &token), 74 GNUNET_PQ_result_spec_uint32 ("validity_scope", 75 &validity_scope), 76 GNUNET_PQ_result_spec_string ("description", 77 &description), 78 GNUNET_PQ_result_spec_timestamp ("creation_time", 79 &creation_time), 80 GNUNET_PQ_result_spec_timestamp ("expiration_time", 81 &expiration_time), 82 GNUNET_PQ_result_spec_uint64 ("serial", 83 &serial), 84 GNUNET_PQ_result_spec_end 85 }; 86 87 if (GNUNET_OK != 88 GNUNET_PQ_extract_result (result, 89 rs, 90 i)) 91 { 92 GNUNET_break (0); 93 plc->extract_failed = true; 94 return; 95 } 96 plc->cb (plc->cb_cls, 97 creation_time, 98 expiration_time, 99 validity_scope, 100 description, 101 serial); 102 GNUNET_PQ_cleanup_result (rs); 103 } 104 } 105 106 107 enum GNUNET_DB_QueryStatus 108 TALER_MERCHANTDB_lookup_login_tokens ( 109 struct TALER_MERCHANTDB_PostgresContext *pg, 110 const char *instance_id, 111 uint64_t offset, 112 int64_t limit, 113 TALER_MERCHANTDB_LoginTokensCallback cb, 114 void *cb_cls) 115 { 116 struct GNUNET_TIME_Timestamp now = GNUNET_TIME_timestamp_get (); 117 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 118 struct LookupLoginTokensContext plc = { 119 .cb = cb, 120 .cb_cls = cb_cls, 121 /* Can be overwritten by the lookup_products_cb */ 122 .extract_failed = false, 123 }; 124 struct GNUNET_PQ_QueryParam params[] = { 125 GNUNET_PQ_query_param_timestamp (&now), 126 GNUNET_PQ_query_param_uint64 (&offset), 127 GNUNET_PQ_query_param_uint64 (&plimit), 128 GNUNET_PQ_query_param_end 129 }; 130 enum GNUNET_DB_QueryStatus qs; 131 132 GNUNET_assert (NULL != pg->current_merchant_id); 133 GNUNET_assert (0 == strcmp (instance_id, 134 pg->current_merchant_id)); 135 check_connection (pg); 136 if (limit > 0) 137 { 138 TMH_PQ_prepare_anon (pg, 139 "SELECT" 140 " token" 141 ",serial" 142 ",creation_time" 143 ",expiration_time" 144 ",validity_scope" 145 ",description" 146 " FROM merchant_login_tokens" 147 " WHERE expiration_time > $1" 148 " AND serial > $2" 149 " ORDER BY serial ASC" 150 " LIMIT $3"); 151 } 152 else 153 { 154 TMH_PQ_prepare_anon (pg, 155 "SELECT" 156 " token" 157 ",serial" 158 ",creation_time" 159 ",expiration_time" 160 ",validity_scope" 161 ",description" 162 " FROM merchant_login_tokens" 163 " WHERE expiration_time > $1" 164 " AND serial < $2" 165 " ORDER BY serial DESC" 166 " LIMIT $3"); 167 } 168 qs = GNUNET_PQ_eval_prepared_multi_select ( 169 pg->conn, 170 "", 171 params, 172 &lookup_login_tokens_cb, 173 &plc); 174 /* If there was an error inside lookup_products_cb, return a hard error. */ 175 if (plc.extract_failed) 176 return GNUNET_DB_STATUS_HARD_ERROR; 177 return qs; 178 }