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1 : /* 2 : This file is part of TALER 3 : Copyright (C) 2014-2018, 2020 Taler Systems SA 4 : 5 : TALER is free software; you can redistribute it and/or modify it under the 6 : terms of the GNU Lesser General Public License as published by the Free Software 7 : Foundation; either version 2.1, 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 Lesser General Public License for more details. 12 : 13 : You should have received a copy of the GNU Lesser General Public License along with 14 : TALER; see the file COPYING.LGPL. If not, see 15 : <http://www.gnu.org/licenses/> 16 : */ 17 : /** 18 : * @file merchant_api_delete_product.c 19 : * @brief Implementation of the DELETE /product/$ID request of the merchant's HTTP API 20 : * @author Christian Grothoff 21 : */ 22 : #include "platform.h" 23 : #include <curl/curl.h> 24 : #include <jansson.h> 25 : #include <microhttpd.h> /* just for HTTP status codes */ 26 : #include <gnunet/gnunet_util_lib.h> 27 : #include <gnunet/gnunet_curl_lib.h> 28 : #include "taler_merchant_service.h" 29 : #include <taler/taler_json_lib.h> 30 : #include <taler/taler_signatures.h> 31 : 32 : 33 : /** 34 : * Handle for a DELETE /products/$ID operation. 35 : */ 36 : struct TALER_MERCHANT_ProductDeleteHandle 37 : { 38 : /** 39 : * The url for this request. 40 : */ 41 : char *url; 42 : 43 : /** 44 : * Handle for the request. 45 : */ 46 : struct GNUNET_CURL_Job *job; 47 : 48 : /** 49 : * Function to call with the result. 50 : */ 51 : TALER_MERCHANT_ProductDeleteCallback cb; 52 : 53 : /** 54 : * Closure for @a cb. 55 : */ 56 : void *cb_cls; 57 : 58 : /** 59 : * Reference to the execution context. 60 : */ 61 : struct GNUNET_CURL_Context *ctx; 62 : 63 : }; 64 : 65 : 66 : /** 67 : * Function called when we're done processing the 68 : * HTTP GET /products/$ID request. 69 : * 70 : * @param cls the `struct TALER_MERCHANT_ProductDeleteHandle` 71 : * @param response_code HTTP response code, 0 on error 72 : * @param response response body, NULL if not in JSON 73 : */ 74 : static void 75 0 : handle_delete_product_finished (void *cls, 76 : long response_code, 77 : const void *response) 78 : { 79 0 : struct TALER_MERCHANT_ProductDeleteHandle *pdh = cls; 80 0 : const json_t *json = response; 81 0 : struct TALER_MERCHANT_HttpResponse hr = { 82 0 : .http_status = (unsigned int) response_code, 83 : .reply = json 84 : }; 85 : 86 0 : pdh->job = NULL; 87 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 88 : "Got /products/$ID response with status code %u\n", 89 : (unsigned int) response_code); 90 0 : switch (response_code) 91 : { 92 0 : case MHD_HTTP_NO_CONTENT: 93 0 : break; 94 0 : case MHD_HTTP_NOT_FOUND: 95 0 : hr.ec = TALER_JSON_get_error_code (json); 96 0 : hr.hint = TALER_JSON_get_error_hint (json); 97 0 : break; 98 0 : case MHD_HTTP_CONFLICT: 99 0 : hr.ec = TALER_JSON_get_error_code (json); 100 0 : hr.hint = TALER_JSON_get_error_hint (json); 101 0 : break; 102 0 : default: 103 : /* unexpected response code */ 104 0 : hr.ec = TALER_JSON_get_error_code (json); 105 0 : hr.hint = TALER_JSON_get_error_hint (json); 106 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 107 : "Unexpected response code %u/%d\n", 108 : (unsigned int) response_code, 109 : (int) hr.ec); 110 0 : break; 111 : } 112 0 : pdh->cb (pdh->cb_cls, 113 : &hr); 114 0 : TALER_MERCHANT_product_delete_cancel (pdh); 115 0 : } 116 : 117 : 118 : struct TALER_MERCHANT_ProductDeleteHandle * 119 0 : TALER_MERCHANT_product_delete ( 120 : struct GNUNET_CURL_Context *ctx, 121 : const char *backend_url, 122 : const char *product_id, 123 : TALER_MERCHANT_ProductDeleteCallback cb, 124 : void *cb_cls) 125 : { 126 : struct TALER_MERCHANT_ProductDeleteHandle *pdh; 127 : 128 0 : pdh = GNUNET_new (struct TALER_MERCHANT_ProductDeleteHandle); 129 0 : pdh->ctx = ctx; 130 0 : pdh->cb = cb; 131 0 : pdh->cb_cls = cb_cls; 132 : { 133 : char *path; 134 : 135 0 : GNUNET_asprintf (&path, 136 : "private/products/%s", 137 : product_id); 138 0 : pdh->url = TALER_url_join (backend_url, 139 : path, 140 : NULL); 141 0 : GNUNET_free (path); 142 : } 143 0 : if (NULL == pdh->url) 144 : { 145 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 146 : "Could not construct request URL.\n"); 147 0 : GNUNET_free (pdh); 148 0 : return NULL; 149 : } 150 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 151 : "Requesting URL '%s'\n", 152 : pdh->url); 153 : { 154 : CURL *eh; 155 : 156 0 : eh = curl_easy_init (); 157 0 : GNUNET_assert (CURLE_OK == 158 : curl_easy_setopt (eh, 159 : CURLOPT_URL, 160 : pdh->url)); 161 0 : GNUNET_assert (CURLE_OK == 162 : curl_easy_setopt (eh, 163 : CURLOPT_CUSTOMREQUEST, 164 : MHD_HTTP_METHOD_DELETE)); 165 0 : pdh->job = GNUNET_CURL_job_add (ctx, 166 : eh, 167 : &handle_delete_product_finished, 168 : pdh); 169 : } 170 0 : return pdh; 171 : } 172 : 173 : 174 : void 175 0 : TALER_MERCHANT_product_delete_cancel ( 176 : struct TALER_MERCHANT_ProductDeleteHandle *pdh) 177 : { 178 0 : if (NULL != pdh->job) 179 0 : GNUNET_CURL_job_cancel (pdh->job); 180 0 : GNUNET_free (pdh->url); 181 0 : GNUNET_free (pdh); 182 0 : }