Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2026 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_post-private-orders-ORDER_ID-refund-new.c
19 : * @brief Implementation of the POST /private/orders/$ORDER_ID/refund request
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include <taler/merchant/post-private-orders-ORDER_ID-refund.h>
29 : #include "merchant_api_curl_defaults.h"
30 : #include "merchant_api_common.h"
31 : #include <taler/taler_json_lib.h>
32 : #include <taler/taler_curl_lib.h>
33 :
34 :
35 : /**
36 : * Handle for a POST /private/orders/$ORDER_ID/refund operation.
37 : */
38 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle
39 : {
40 : /**
41 : * Base URL of the merchant backend.
42 : */
43 : char *base_url;
44 :
45 : /**
46 : * The full URL for this request.
47 : */
48 : char *url;
49 :
50 : /**
51 : * Handle for the request.
52 : */
53 : struct GNUNET_CURL_Job *job;
54 :
55 : /**
56 : * Function to call with the result.
57 : */
58 : TALER_MERCHANT_PostPrivateOrdersRefundCallback cb;
59 :
60 : /**
61 : * Closure for @a cb.
62 : */
63 : TALER_MERCHANT_POST_PRIVATE_ORDERS_REFUND_RESULT_CLOSURE *cb_cls;
64 :
65 : /**
66 : * Reference to the execution context.
67 : */
68 : struct GNUNET_CURL_Context *ctx;
69 :
70 : /**
71 : * Minor context that holds body and headers.
72 : */
73 : struct TALER_CURL_PostContext post_ctx;
74 :
75 : /**
76 : * Identifier of the order to refund.
77 : */
78 : char *order_id;
79 :
80 : /**
81 : * Amount to refund.
82 : */
83 : struct TALER_Amount refund;
84 :
85 : /**
86 : * Human-readable reason for the refund.
87 : */
88 : char *reason;
89 : };
90 :
91 :
92 : /**
93 : * Function called when we're done processing the
94 : * HTTP POST /private/orders/$ORDER_ID/refund request.
95 : *
96 : * @param cls the `struct TALER_MERCHANT_PostPrivateOrdersRefundHandle`
97 : * @param response_code HTTP response code, 0 on error
98 : * @param response response body, NULL if not in JSON
99 : */
100 : static void
101 0 : handle_refund_finished (void *cls,
102 : long response_code,
103 : const void *response)
104 : {
105 0 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle *porh = cls;
106 0 : const json_t *json = response;
107 0 : struct TALER_MERCHANT_PostPrivateOrdersRefundResponse rr = {
108 0 : .hr.http_status = (unsigned int) response_code,
109 : .hr.reply = json
110 : };
111 :
112 0 : porh->job = NULL;
113 0 : switch (response_code)
114 : {
115 0 : case 0:
116 0 : rr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
117 0 : break;
118 0 : case MHD_HTTP_OK:
119 : {
120 : struct GNUNET_JSON_Specification spec[] = {
121 0 : GNUNET_JSON_spec_string (
122 : "taler_refund_uri",
123 : &rr.details.ok.taler_refund_uri),
124 0 : GNUNET_JSON_spec_fixed_auto (
125 : "h_contract",
126 : &rr.details.ok.h_contract),
127 0 : GNUNET_JSON_spec_end ()
128 : };
129 :
130 0 : if (GNUNET_OK !=
131 0 : GNUNET_JSON_parse (json,
132 : spec,
133 : NULL, NULL))
134 : {
135 0 : GNUNET_break_op (0);
136 0 : rr.hr.http_status = 0;
137 0 : rr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
138 0 : break;
139 : }
140 0 : break;
141 : }
142 0 : case MHD_HTTP_UNAUTHORIZED:
143 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
144 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
145 0 : break;
146 0 : case MHD_HTTP_FORBIDDEN:
147 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
148 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
149 0 : break;
150 0 : case MHD_HTTP_NOT_FOUND:
151 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
152 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
153 0 : break;
154 0 : case MHD_HTTP_CONFLICT:
155 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
156 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
157 0 : break;
158 0 : case MHD_HTTP_GONE:
159 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
160 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
161 0 : break;
162 0 : case MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS:
163 0 : rr.hr.ec = TALER_JSON_get_error_code (json);
164 0 : rr.hr.hint = TALER_JSON_get_error_hint (json);
165 0 : break;
166 0 : default:
167 0 : GNUNET_break_op (0);
168 0 : TALER_MERCHANT_parse_error_details_ (json,
169 : response_code,
170 : &rr.hr);
171 0 : break;
172 : }
173 0 : porh->cb (porh->cb_cls,
174 : &rr);
175 0 : TALER_MERCHANT_post_private_orders_refund_cancel (porh);
176 0 : }
177 :
178 :
179 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle *
180 0 : TALER_MERCHANT_post_private_orders_refund_create (
181 : struct GNUNET_CURL_Context *ctx,
182 : const char *url,
183 : const char *order_id,
184 : const struct TALER_Amount *refund,
185 : const char *reason)
186 : {
187 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle *porh;
188 :
189 0 : porh = GNUNET_new (struct TALER_MERCHANT_PostPrivateOrdersRefundHandle);
190 0 : porh->ctx = ctx;
191 0 : porh->base_url = GNUNET_strdup (url);
192 0 : porh->order_id = GNUNET_strdup (order_id);
193 0 : porh->refund = *refund;
194 0 : porh->reason = GNUNET_strdup (reason);
195 0 : return porh;
196 : }
197 :
198 :
199 : enum TALER_ErrorCode
200 0 : TALER_MERCHANT_post_private_orders_refund_start (
201 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle *porh,
202 : TALER_MERCHANT_PostPrivateOrdersRefundCallback cb,
203 : TALER_MERCHANT_POST_PRIVATE_ORDERS_REFUND_RESULT_CLOSURE *cb_cls)
204 : {
205 : json_t *req_obj;
206 : CURL *eh;
207 :
208 0 : porh->cb = cb;
209 0 : porh->cb_cls = cb_cls;
210 : {
211 : char *path;
212 :
213 0 : GNUNET_asprintf (&path,
214 : "private/orders/%s/refund",
215 : porh->order_id);
216 0 : porh->url = TALER_url_join (porh->base_url,
217 : path,
218 : NULL);
219 0 : GNUNET_free (path);
220 : }
221 0 : if (NULL == porh->url)
222 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
223 0 : req_obj = GNUNET_JSON_PACK (
224 : TALER_JSON_pack_amount ("refund",
225 : &porh->refund),
226 : GNUNET_JSON_pack_string ("reason",
227 : porh->reason));
228 0 : eh = TALER_MERCHANT_curl_easy_get_ (porh->url);
229 0 : if ( (NULL == eh) ||
230 : (GNUNET_OK !=
231 0 : TALER_curl_easy_post (&porh->post_ctx,
232 : eh,
233 : req_obj)) )
234 : {
235 0 : GNUNET_break (0);
236 0 : json_decref (req_obj);
237 0 : if (NULL != eh)
238 0 : curl_easy_cleanup (eh);
239 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
240 : }
241 0 : json_decref (req_obj);
242 0 : porh->job = GNUNET_CURL_job_add2 (porh->ctx,
243 : eh,
244 0 : porh->post_ctx.headers,
245 : &handle_refund_finished,
246 : porh);
247 0 : if (NULL == porh->job)
248 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
249 0 : return TALER_EC_NONE;
250 : }
251 :
252 :
253 : void
254 0 : TALER_MERCHANT_post_private_orders_refund_cancel (
255 : struct TALER_MERCHANT_PostPrivateOrdersRefundHandle *porh)
256 : {
257 0 : if (NULL != porh->job)
258 : {
259 0 : GNUNET_CURL_job_cancel (porh->job);
260 0 : porh->job = NULL;
261 : }
262 0 : TALER_curl_easy_post_finished (&porh->post_ctx);
263 0 : GNUNET_free (porh->order_id);
264 0 : GNUNET_free (porh->reason);
265 0 : GNUNET_free (porh->url);
266 0 : GNUNET_free (porh->base_url);
267 0 : GNUNET_free (porh);
268 0 : }
269 :
270 :
271 : /* end of merchant_api_post-private-orders-ORDER_ID-refund-new.c */
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