Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 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 src/lib/merchant_api_post-private-orders-ORDER_ID-refund-external.c
19 : * @brief Implementation of the POST /private/orders/$ORDER_ID/refund-external request
20 : * @author Bohdan Potuzhnyi
21 : * @author Volodymyr Potuzhnyi
22 : */
23 : #include "platform.h"
24 : #include <curl/curl.h>
25 : #include <jansson.h>
26 : #include <microhttpd.h> /* just for HTTP status codes */
27 : #include <gnunet/gnunet_util_lib.h>
28 : #include <gnunet/gnunet_curl_lib.h>
29 : #include <taler/merchant/post-private-orders-ORDER_ID-refund-external.h>
30 : #include "merchant_api_curl_defaults.h"
31 : #include "merchant_api_common.h"
32 : #include <taler/taler_json_lib.h>
33 : #include <taler/taler_curl_lib.h>
34 :
35 :
36 : /**
37 : * Handle for a POST /private/orders/$ORDER_ID/refund-external operation.
38 : */
39 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle
40 : {
41 : /**
42 : * Base URL of the merchant backend.
43 : */
44 : char *base_url;
45 :
46 : /**
47 : * The full URL for this request.
48 : */
49 : char *url;
50 :
51 : /**
52 : * Handle for the request.
53 : */
54 : struct GNUNET_CURL_Job *job;
55 :
56 : /**
57 : * Function to call with the result.
58 : */
59 : TALER_MERCHANT_PostPrivateOrdersRefundExternalCallback cb;
60 :
61 : /**
62 : * Closure for @a cb.
63 : */
64 : TALER_MERCHANT_POST_PRIVATE_ORDERS_REFUND_EXTERNAL_RESULT_CLOSURE *cb_cls;
65 :
66 : /**
67 : * Reference to the execution context.
68 : */
69 : struct GNUNET_CURL_Context *ctx;
70 :
71 : /**
72 : * Minor context that holds body and headers.
73 : */
74 : struct TALER_CURL_PostContext post_ctx;
75 :
76 : /**
77 : * Identifier of the order to record the refund for.
78 : */
79 : char *order_id;
80 :
81 : /**
82 : * External refund entry to record.
83 : */
84 : json_t *body;
85 : };
86 :
87 :
88 : /**
89 : * Function called when we're done processing the
90 : * HTTP POST /private/orders/$ORDER_ID/refund-external request.
91 : *
92 : * @param cls the `struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle`
93 : * @param response_code HTTP response code, 0 on error
94 : * @param response response body, NULL if not in JSON
95 : */
96 : static void
97 24 : handle_refund_external_finished (void *cls,
98 : long response_code,
99 : const void *response)
100 : {
101 24 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle *poreh = cls;
102 24 : const json_t *json = response;
103 24 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalResponse rer = {
104 24 : .hr.http_status = (unsigned int) response_code,
105 : .hr.reply = json
106 : };
107 :
108 24 : poreh->job = NULL;
109 24 : switch (response_code)
110 : {
111 0 : case 0:
112 0 : rer.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
113 0 : break;
114 10 : case MHD_HTTP_OK:
115 : {
116 : struct GNUNET_JSON_Specification spec[] = {
117 10 : GNUNET_JSON_spec_string ("refund_id",
118 : &rer.details.ok.refund_id),
119 10 : GNUNET_JSON_spec_end ()
120 : };
121 :
122 10 : if (GNUNET_OK !=
123 10 : GNUNET_JSON_parse (json,
124 : spec,
125 : NULL,
126 : NULL))
127 : {
128 0 : GNUNET_break_op (0);
129 0 : rer.hr.http_status = 0;
130 0 : rer.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
131 : }
132 10 : break;
133 : }
134 2 : case MHD_HTTP_BAD_REQUEST:
135 2 : rer.hr.ec = TALER_JSON_get_error_code (json);
136 2 : rer.hr.hint = TALER_JSON_get_error_hint (json);
137 2 : break;
138 0 : case MHD_HTTP_UNAUTHORIZED:
139 0 : rer.hr.ec = TALER_JSON_get_error_code (json);
140 0 : rer.hr.hint = TALER_JSON_get_error_hint (json);
141 0 : break;
142 2 : case MHD_HTTP_NOT_FOUND:
143 2 : rer.hr.ec = TALER_JSON_get_error_code (json);
144 2 : rer.hr.hint = TALER_JSON_get_error_hint (json);
145 2 : break;
146 10 : case MHD_HTTP_CONFLICT:
147 10 : rer.hr.ec = TALER_JSON_get_error_code (json);
148 10 : rer.hr.hint = TALER_JSON_get_error_hint (json);
149 10 : break;
150 0 : default:
151 0 : GNUNET_break_op (0);
152 0 : TALER_MERCHANT_parse_error_details_ (json,
153 : response_code,
154 : &rer.hr);
155 0 : break;
156 : }
157 24 : poreh->cb (poreh->cb_cls,
158 : &rer);
159 24 : TALER_MERCHANT_post_private_orders_refund_external_cancel (poreh);
160 24 : }
161 :
162 :
163 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle *
164 24 : TALER_MERCHANT_post_private_orders_refund_external_create (
165 : struct GNUNET_CURL_Context *ctx,
166 : const char *url,
167 : const char *order_id,
168 : const json_t *body)
169 : {
170 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle *poreh;
171 :
172 24 : poreh = GNUNET_new (
173 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle);
174 24 : poreh->ctx = ctx;
175 24 : poreh->base_url = GNUNET_strdup (url);
176 24 : poreh->order_id = GNUNET_strdup (order_id);
177 24 : poreh->body = json_deep_copy (body);
178 24 : GNUNET_assert (NULL != poreh->body);
179 24 : return poreh;
180 : }
181 :
182 :
183 : enum TALER_ErrorCode
184 24 : TALER_MERCHANT_post_private_orders_refund_external_start (
185 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle *poreh,
186 : TALER_MERCHANT_PostPrivateOrdersRefundExternalCallback cb,
187 : TALER_MERCHANT_POST_PRIVATE_ORDERS_REFUND_EXTERNAL_RESULT_CLOSURE *cb_cls)
188 : {
189 : CURL *eh;
190 :
191 24 : poreh->cb = cb;
192 24 : poreh->cb_cls = cb_cls;
193 : {
194 : char *path;
195 :
196 24 : GNUNET_asprintf (&path,
197 : "private/orders/%s/refund-external",
198 : poreh->order_id);
199 24 : poreh->url = TALER_url_join (poreh->base_url,
200 : path,
201 : NULL);
202 24 : GNUNET_free (path);
203 : }
204 24 : if (NULL == poreh->url)
205 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
206 24 : eh = TALER_MERCHANT_curl_easy_get_ (poreh->url);
207 48 : if ( (NULL == eh) ||
208 : (GNUNET_OK !=
209 24 : TALER_curl_easy_post (&poreh->post_ctx,
210 : eh,
211 24 : poreh->body)) )
212 : {
213 0 : GNUNET_break (0);
214 0 : if (NULL != eh)
215 0 : curl_easy_cleanup (eh);
216 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
217 : }
218 48 : poreh->job = GNUNET_CURL_job_add2 (poreh->ctx,
219 : eh,
220 24 : poreh->post_ctx.headers,
221 : &handle_refund_external_finished,
222 : poreh);
223 24 : if (NULL == poreh->job)
224 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
225 24 : return TALER_EC_NONE;
226 : }
227 :
228 :
229 : void
230 24 : TALER_MERCHANT_post_private_orders_refund_external_cancel (
231 : struct TALER_MERCHANT_PostPrivateOrdersRefundExternalHandle *poreh)
232 : {
233 24 : if (NULL != poreh->job)
234 : {
235 0 : GNUNET_CURL_job_cancel (poreh->job);
236 0 : poreh->job = NULL;
237 : }
238 24 : TALER_curl_easy_post_finished (&poreh->post_ctx);
239 24 : json_decref (poreh->body);
240 24 : GNUNET_free (poreh->order_id);
241 24 : GNUNET_free (poreh->url);
242 24 : GNUNET_free (poreh->base_url);
243 24 : GNUNET_free (poreh);
244 24 : }
245 :
246 :
247 : /* end of merchant_api_post-private-orders-ORDER_ID-refund-external.c */
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