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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_iterate_active_auditors.c 18 : * @brief Implementation of the iterate_active_auditors function for Postgres 19 : * @author Christian Grothoff 20 : */ 21 : #include "platform.h" 22 : #include "taler_error_codes.h" 23 : #include "taler_dbevents.h" 24 : #include "taler_pq_lib.h" 25 : #include "pg_iterate_active_auditors.h" 26 : #include "pg_helper.h" 27 : 28 : 29 : /** 30 : * Closure for #auditors_cb_helper() 31 : */ 32 : struct AuditorsIteratorContext 33 : { 34 : /** 35 : * Function to call with the results. 36 : */ 37 : TALER_EXCHANGEDB_AuditorsCallback cb; 38 : 39 : /** 40 : * Closure to pass to @e cb 41 : */ 42 : void *cb_cls; 43 : 44 : }; 45 : 46 : 47 : /** 48 : * Helper function for #TEH_PG_iterate_active_auditors(). 49 : * Calls the callback with each auditor. 50 : * 51 : * @param cls a `struct SignkeysIteratorContext` 52 : * @param result db results 53 : * @param num_results number of results in @a result 54 : */ 55 : static void 56 89 : auditors_cb_helper (void *cls, 57 : PGresult *result, 58 : unsigned int num_results) 59 : { 60 89 : struct AuditorsIteratorContext *dic = cls; 61 : 62 97 : for (unsigned int i = 0; i<num_results; i++) 63 : { 64 : struct TALER_AuditorPublicKeyP auditor_pub; 65 : char *auditor_url; 66 : char *auditor_name; 67 8 : struct GNUNET_PQ_ResultSpec rs[] = { 68 8 : GNUNET_PQ_result_spec_auto_from_type ("auditor_pub", 69 : &auditor_pub), 70 8 : GNUNET_PQ_result_spec_string ("auditor_url", 71 : &auditor_url), 72 8 : GNUNET_PQ_result_spec_string ("auditor_name", 73 : &auditor_name), 74 : GNUNET_PQ_result_spec_end 75 : }; 76 : 77 8 : if (GNUNET_OK != 78 8 : GNUNET_PQ_extract_result (result, 79 : rs, 80 : i)) 81 : { 82 0 : GNUNET_break (0); 83 0 : return; 84 : } 85 8 : dic->cb (dic->cb_cls, 86 : &auditor_pub, 87 : auditor_url, 88 : auditor_name); 89 8 : GNUNET_PQ_cleanup_result (rs); 90 : } 91 : } 92 : 93 : 94 : enum GNUNET_DB_QueryStatus 95 89 : TEH_PG_iterate_active_auditors (void *cls, 96 : TALER_EXCHANGEDB_AuditorsCallback cb, 97 : void *cb_cls) 98 : { 99 89 : struct PostgresClosure *pg = cls; 100 89 : struct GNUNET_PQ_QueryParam params[] = { 101 : GNUNET_PQ_query_param_end 102 : }; 103 89 : struct AuditorsIteratorContext dic = { 104 : .cb = cb, 105 : .cb_cls = cb_cls, 106 : }; 107 : 108 89 : PREPARE (pg, 109 : "select_auditors", 110 : "SELECT" 111 : " auditor_pub" 112 : ",auditor_url" 113 : ",auditor_name" 114 : " FROM auditors" 115 : " WHERE" 116 : " is_active;"); 117 : 118 89 : return GNUNET_PQ_eval_prepared_multi_select (pg->conn, 119 : "select_auditors", 120 : params, 121 : &auditors_cb_helper, 122 : &dic); 123 : }