merchant_api_get_account.c (6134B)
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 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_get_account.c 19 * @brief Implementation of the GET /accounts/$ID request of the merchant's HTTP API 20 * @author Priscilla HUANG 21 */ 22 #include "platform.h" 23 #include <curl/curl.h> 24 #include <jansson.h> 25 #include <microhttpd.h> /* just for HTTP status codes */ 26 #include <gnunet/gnunet_util_lib.h> 27 #include <gnunet/gnunet_curl_lib.h> 28 #include "taler_merchant_service.h" 29 #include "merchant_api_curl_defaults.h" 30 #include <taler/taler_json_lib.h> 31 #include <taler/taler_signatures.h> 32 33 34 /** 35 * Handle for a GET /accounts/$ID operation. 36 */ 37 struct TALER_MERCHANT_AccountGetHandle 38 { 39 /** 40 * The url for this request. 41 */ 42 char *url; 43 44 /** 45 * Handle for the request. 46 */ 47 struct GNUNET_CURL_Job *job; 48 49 /** 50 * Function to call with the result. 51 */ 52 TALER_MERCHANT_AccountGetCallback cb; 53 54 /** 55 * Closure for @a cb. 56 */ 57 void *cb_cls; 58 59 /** 60 * Reference to the execution context. 61 */ 62 struct GNUNET_CURL_Context *ctx; 63 64 }; 65 66 67 /** 68 * Function called when we're done processing the 69 * HTTP GET /accounts/$ID request. 70 * 71 * @param cls the `struct TALER_MERCHANT_AccountGetHandle` 72 * @param response_code HTTP response code, 0 on error 73 * @param response response body, NULL if not in JSON 74 */ 75 static void 76 handle_get_account_finished (void *cls, 77 long response_code, 78 const void *response) 79 { 80 struct TALER_MERCHANT_AccountGetHandle *tgh = cls; 81 const json_t *json = response; 82 struct TALER_MERCHANT_AccountGetResponse tgr = { 83 .hr.http_status = (unsigned int) response_code, 84 .hr.reply = json 85 }; 86 87 tgh->job = NULL; 88 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 89 "Got /accounts/$ID response with status code %u\n", 90 (unsigned int) response_code); 91 switch (response_code) 92 { 93 case MHD_HTTP_OK: 94 { 95 struct GNUNET_JSON_Specification spec[] = { 96 GNUNET_JSON_spec_fixed_auto ("salt", 97 &tgr.details.ok.ad.salt), 98 GNUNET_JSON_spec_mark_optional ( 99 TALER_JSON_spec_web_url ("credit_facade_url", 100 &tgr.details.ok.ad.credit_facade_url), 101 NULL), 102 TALER_JSON_spec_full_payto_uri ("payto_uri", 103 &tgr.details.ok.ad.payto_uri), 104 GNUNET_JSON_spec_fixed_auto ("h_wire", 105 &tgr.details.ok.ad.h_wire), 106 GNUNET_JSON_spec_bool ("active", 107 &tgr.details.ok.ad.active), 108 GNUNET_JSON_spec_end () 109 }; 110 111 if (GNUNET_OK == 112 GNUNET_JSON_parse (json, 113 spec, 114 NULL, NULL)) 115 { 116 tgh->cb (tgh->cb_cls, 117 &tgr); 118 TALER_MERCHANT_account_get_cancel (tgh); 119 return; 120 } 121 tgr.hr.http_status = 0; 122 tgr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; 123 break; 124 } 125 case MHD_HTTP_UNAUTHORIZED: 126 tgr.hr.ec = TALER_JSON_get_error_code (json); 127 tgr.hr.hint = TALER_JSON_get_error_hint (json); 128 /* Nothing really to verify, merchant says we need to authenticate. */ 129 break; 130 case MHD_HTTP_NOT_FOUND: 131 tgr.hr.ec = TALER_JSON_get_error_code (json); 132 tgr.hr.hint = TALER_JSON_get_error_hint (json); 133 break; 134 default: 135 /* unexpected response code */ 136 tgr.hr.ec = TALER_JSON_get_error_code (json); 137 tgr.hr.hint = TALER_JSON_get_error_hint (json); 138 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 139 "Unexpected response code %u/%d\n", 140 (unsigned int) response_code, 141 (int) tgr.hr.ec); 142 break; 143 } 144 tgh->cb (tgh->cb_cls, 145 &tgr); 146 TALER_MERCHANT_account_get_cancel (tgh); 147 } 148 149 150 struct TALER_MERCHANT_AccountGetHandle * 151 TALER_MERCHANT_account_get ( 152 struct GNUNET_CURL_Context *ctx, 153 const char *backend_url, 154 const char *instance_id, 155 const struct TALER_MerchantWireHashP *h_wire, 156 TALER_MERCHANT_AccountGetCallback cb, 157 void *cb_cls) 158 { 159 struct TALER_MERCHANT_AccountGetHandle *tgh; 160 CURL *eh; 161 162 tgh = GNUNET_new (struct TALER_MERCHANT_AccountGetHandle); 163 tgh->ctx = ctx; 164 tgh->cb = cb; 165 tgh->cb_cls = cb_cls; 166 { 167 char w_str[sizeof (*h_wire) * 2]; 168 char *path; 169 char *end; 170 171 end = GNUNET_STRINGS_data_to_string (h_wire, 172 sizeof (*h_wire), 173 w_str, 174 sizeof (w_str)); 175 *end = '\0'; 176 GNUNET_asprintf (&path, 177 "private/accounts/%s", 178 w_str); 179 tgh->url = TALER_url_join (backend_url, 180 path, 181 NULL); 182 GNUNET_free (path); 183 } 184 if (NULL == tgh->url) 185 { 186 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 187 "Could not construct request URL.\n"); 188 GNUNET_free (tgh); 189 return NULL; 190 } 191 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 192 "Requesting URL '%s'\n", 193 tgh->url); 194 eh = TALER_MERCHANT_curl_easy_get_ (tgh->url); 195 tgh->job = GNUNET_CURL_job_add (ctx, 196 eh, 197 &handle_get_account_finished, 198 tgh); 199 return tgh; 200 } 201 202 203 void 204 TALER_MERCHANT_account_get_cancel ( 205 struct TALER_MERCHANT_AccountGetHandle *tgh) 206 { 207 if (NULL != tgh->job) 208 GNUNET_CURL_job_cancel (tgh->job); 209 GNUNET_free (tgh->url); 210 GNUNET_free (tgh); 211 }