lookup_product_image.c (1861B)
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_product_image.c 18 * @brief Implementation of the lookup_product_image_by_hash function for Postgres 19 * @author Bohdan Potuzhnyi 20 */ 21 #include "merchantdb_lib.h" 22 #include "merchant-database/lookup_product_image.h" 23 #include "helper.h" 24 25 26 enum GNUNET_DB_QueryStatus 27 TALER_MERCHANTDB_lookup_product_image_by_hash ( 28 struct TALER_MERCHANTDB_PostgresContext *pg, 29 const char *instance_id, 30 const char *image_hash, 31 char **image) 32 { 33 struct GNUNET_PQ_QueryParam params[] = { 34 GNUNET_PQ_query_param_string (image_hash), 35 GNUNET_PQ_query_param_end 36 }; 37 struct GNUNET_PQ_ResultSpec rs[] = { 38 GNUNET_PQ_result_spec_string ("image", 39 image), 40 GNUNET_PQ_result_spec_end 41 }; 42 43 GNUNET_assert (NULL != pg->current_merchant_id); 44 GNUNET_assert (0 == strcmp (instance_id, 45 pg->current_merchant_id)); 46 check_connection (pg); 47 TMH_PQ_prepare_anon ( 48 pg, 49 "SELECT" 50 " mi.image" 51 " FROM merchant_inventory mi" 52 " WHERE mi.image_hash=$1"); 53 *image = NULL; 54 return GNUNET_PQ_eval_prepared_singleton_select ( 55 pg->conn, 56 "", 57 params, 58 rs); 59 }