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1 : /* 2 : This file is part of TALER 3 : Copyright (C) 2020-2022 Taler Systems SA 4 : 5 : TALER is free software; you can redistribute it and/or modify it under the 6 : terms of the GNU 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_order.c 19 : * @brief Implementation of the DELETE /orders/$ORDER_ID request of the merchant's HTTP API 20 : * @author Jonathan Buchanan 21 : */ 22 : #include "platform.h" 23 : #include <curl/curl.h> 24 : #include <jansson.h> 25 : #include <microhttpd.h> /* just for HTTP status codes */ 26 : #include <gnunet/gnunet_util_lib.h> 27 : #include <gnunet/gnunet_curl_lib.h> 28 : #include "taler_merchant_service.h" 29 : #include "merchant_api_curl_defaults.h" 30 : #include <taler/taler_json_lib.h> 31 : #include <taler/taler_signatures.h> 32 : 33 : /** 34 : * Handle for a DELETE /orders/$ID operation. 35 : */ 36 : struct TALER_MERCHANT_OrderDeleteHandle 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_OrderDeleteCallback 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 : * Function called when we're done processing the 67 : * HTTP DELETE /orders/$ORDER_ID request. 68 : * 69 : * @param cls the `struct TALER_MERCHANT_OrderDeleteHandle` 70 : * @param response_code HTTP response code, 0 on error 71 : * @param response response body, NULL if not in JSON 72 : */ 73 : static void 74 0 : handle_delete_order_finished (void *cls, 75 : long response_code, 76 : const void *response) 77 : { 78 0 : struct TALER_MERCHANT_OrderDeleteHandle *odh = cls; 79 0 : struct TALER_MERCHANT_HttpResponse hr = { 80 0 : .http_status = (unsigned int) response_code, 81 : .reply = NULL, 82 : }; 83 : 84 0 : odh->job = NULL; 85 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 86 : "Got /orders/$ID response with status code %u\n", 87 : (unsigned int) response_code); 88 0 : switch (response_code) 89 : { 90 0 : case MHD_HTTP_NO_CONTENT: 91 0 : break; 92 0 : case MHD_HTTP_UNAUTHORIZED: 93 0 : hr.ec = TALER_JSON_get_error_code (response); 94 0 : hr.hint = TALER_JSON_get_error_hint (response); 95 : /* Nothing really to verify, merchant says we need to authenticate. */ 96 0 : break; 97 0 : case MHD_HTTP_NOT_FOUND: 98 0 : break; 99 0 : case MHD_HTTP_CONFLICT: 100 0 : break; 101 0 : default: 102 : /* unexpected response code */ 103 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 104 : "Unexpected response code %u\n", 105 : (unsigned int) response_code); 106 0 : break; 107 : } 108 0 : odh->cb (odh->cb_cls, 109 : &hr); 110 0 : TALER_MERCHANT_order_delete_cancel (odh); 111 0 : } 112 : 113 : 114 : struct TALER_MERCHANT_OrderDeleteHandle * 115 0 : TALER_MERCHANT_order_delete ( 116 : struct GNUNET_CURL_Context *ctx, 117 : const char *backend_url, 118 : const char *order_id, 119 : bool force, 120 : TALER_MERCHANT_OrderDeleteCallback cb, 121 : void *cb_cls) 122 : { 123 : struct TALER_MERCHANT_OrderDeleteHandle *odh; 124 : 125 0 : odh = GNUNET_new (struct TALER_MERCHANT_OrderDeleteHandle); 126 0 : odh->ctx = ctx; 127 0 : odh->cb = cb; 128 0 : odh->cb_cls = cb_cls; 129 : { 130 : char *path; 131 : 132 0 : GNUNET_asprintf (&path, 133 : "private/orders/%s%s", 134 : order_id, 135 : force 136 : ? "?force=yes" 137 : : ""); 138 : 139 0 : odh->url = TALER_url_join (backend_url, 140 : path, 141 : NULL); 142 0 : GNUNET_free (path); 143 : } 144 0 : if (NULL == odh->url) 145 : { 146 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 147 : "Could not construct request url.\n"); 148 0 : GNUNET_free (odh); 149 0 : return NULL; 150 : } 151 : 152 : { 153 : CURL *eh; 154 : 155 0 : eh = TALER_MERCHANT_curl_easy_get_ (odh->url); 156 0 : GNUNET_assert (CURLE_OK == 157 : curl_easy_setopt (eh, 158 : CURLOPT_CUSTOMREQUEST, 159 : MHD_HTTP_METHOD_DELETE)); 160 0 : odh->job = GNUNET_CURL_job_add (ctx, 161 : eh, 162 : &handle_delete_order_finished, 163 : odh); 164 : } 165 0 : return odh; 166 : } 167 : 168 : 169 : void 170 0 : TALER_MERCHANT_order_delete_cancel ( 171 : struct TALER_MERCHANT_OrderDeleteHandle *odh) 172 : { 173 0 : if (NULL != odh->job) 174 0 : GNUNET_CURL_job_cancel (odh->job); 175 0 : GNUNET_free (odh->url); 176 0 : GNUNET_free (odh); 177 0 : }