Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025 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
7 : Software 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 A
11 : 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 <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file merchant_api_patch_unit.c
18 : * @brief Implementation of PATCH /private/units/$ID
19 : * @author Bohdan Potuzhnyi
20 : */
21 : #include "platform.h"
22 : #include <curl/curl.h>
23 : #include <jansson.h>
24 : #include <microhttpd.h>
25 : #include <gnunet/gnunet_util_lib.h>
26 : #include "taler_merchant_service.h"
27 : #include "merchant_api_curl_defaults.h"
28 : #include "merchant_api_common.h"
29 : #include <taler/taler_json_lib.h>
30 : #include <taler/taler_curl_lib.h>
31 :
32 :
33 : /**
34 : * Handle for a PATCH /private/units/$ID operation.
35 : */
36 : struct TALER_MERCHANT_UnitPatchHandle
37 : {
38 : /**
39 : * Fully qualified request URL.
40 : */
41 : char *url;
42 :
43 : /**
44 : * In-flight CURL job.
45 : */
46 : struct GNUNET_CURL_Job *job;
47 :
48 : /**
49 : * Completion callback.
50 : */
51 : TALER_MERCHANT_UnitPatchCallback cb;
52 :
53 : /**
54 : * Closure for @a cb.
55 : */
56 : void *cb_cls;
57 :
58 : /**
59 : * Execution context.
60 : */
61 : struct GNUNET_CURL_Context *ctx;
62 :
63 : /**
64 : * Keeps POST body and headers alive.
65 : */
66 : struct TALER_CURL_PostContext post_ctx;
67 : };
68 :
69 :
70 : /**
71 : * Called when the HTTP transfer finishes.
72 : *
73 : * @param cls operation handle
74 : * @param response_code HTTP status (0 on failure)
75 : * @param response parsed JSON reply (NULL if unavailable)
76 : */
77 : static void
78 4 : handle_patch_unit_finished (void *cls,
79 : long response_code,
80 : const void *response)
81 : {
82 4 : struct TALER_MERCHANT_UnitPatchHandle *uph = cls;
83 4 : const json_t *json = response;
84 4 : struct TALER_MERCHANT_HttpResponse hr = {
85 4 : .http_status = (unsigned int) response_code,
86 : .reply = json
87 : };
88 :
89 4 : uph->job = NULL;
90 4 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
91 : "PATCH /private/units completed with status %u\n",
92 : (unsigned int) response_code);
93 4 : switch (response_code)
94 : {
95 4 : case MHD_HTTP_NO_CONTENT:
96 4 : break;
97 0 : case MHD_HTTP_BAD_REQUEST:
98 : case MHD_HTTP_UNAUTHORIZED:
99 : case MHD_HTTP_FORBIDDEN:
100 : case MHD_HTTP_NOT_FOUND:
101 : case MHD_HTTP_CONFLICT:
102 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
103 0 : hr.ec = TALER_JSON_get_error_code (json);
104 0 : hr.hint = TALER_JSON_get_error_hint (json);
105 0 : break;
106 0 : case 0:
107 0 : hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
108 0 : break;
109 0 : default:
110 0 : TALER_MERCHANT_parse_error_details_ (json,
111 : response_code,
112 : &hr);
113 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
114 : "Unexpected response %u/%d for PATCH /private/units\n",
115 : (unsigned int) response_code,
116 : (int) hr.ec);
117 0 : GNUNET_break_op (0);
118 0 : break;
119 : }
120 4 : uph->cb (uph->cb_cls,
121 : &hr);
122 4 : TALER_MERCHANT_unit_patch_cancel (uph);
123 4 : }
124 :
125 :
126 : struct TALER_MERCHANT_UnitPatchHandle *
127 4 : TALER_MERCHANT_unit_patch (struct GNUNET_CURL_Context *ctx,
128 : const char *backend_url,
129 : const char *unit_id,
130 : const char *unit_name_long,
131 : const char *unit_name_short,
132 : const json_t *unit_name_long_i18n,
133 : const json_t *unit_name_short_i18n,
134 : const bool *unit_allow_fraction,
135 : const uint32_t *unit_precision_level,
136 : const bool *unit_active,
137 : TALER_MERCHANT_UnitPatchCallback cb,
138 : void *cb_cls)
139 : {
140 : struct TALER_MERCHANT_UnitPatchHandle *uph;
141 : json_t *req_obj;
142 : char *path;
143 :
144 4 : req_obj = json_object ();
145 4 : if (NULL == req_obj)
146 0 : return NULL;
147 4 : if (NULL != unit_name_long)
148 : {
149 2 : if (0 != json_object_set_new (req_obj,
150 : "unit_name_long",
151 : json_string (unit_name_long)))
152 : {
153 0 : json_decref (req_obj);
154 0 : return NULL;
155 : }
156 : }
157 4 : if (NULL != unit_name_short)
158 : {
159 2 : if (0 != json_object_set_new (req_obj,
160 : "unit_name_short",
161 : json_string (unit_name_short)))
162 : {
163 0 : json_decref (req_obj);
164 0 : return NULL;
165 : }
166 : }
167 4 : if (NULL != unit_name_long_i18n)
168 : {
169 2 : if (0 != json_object_set_new (req_obj,
170 : "unit_name_long_i18n",
171 : json_incref ((json_t *) unit_name_long_i18n)))
172 : {
173 0 : json_decref (req_obj);
174 0 : return NULL;
175 : }
176 : }
177 4 : if (NULL != unit_name_short_i18n)
178 : {
179 2 : if (0 != json_object_set_new (req_obj,
180 : "unit_name_short_i18n",
181 : json_incref (
182 : (json_t *) unit_name_short_i18n)))
183 : {
184 0 : json_decref (req_obj);
185 0 : return NULL;
186 : }
187 : }
188 4 : if (NULL != unit_allow_fraction)
189 : {
190 4 : if (0 != json_object_set_new (req_obj,
191 : "unit_allow_fraction",
192 4 : json_boolean (*unit_allow_fraction)))
193 : {
194 0 : json_decref (req_obj);
195 0 : return NULL;
196 : }
197 : }
198 4 : if (NULL != unit_precision_level)
199 : {
200 4 : if (0 != json_object_set_new (req_obj,
201 : "unit_precision_level",
202 : json_integer (
203 4 : (json_int_t) *unit_precision_level)))
204 : {
205 0 : json_decref (req_obj);
206 0 : return NULL;
207 : }
208 : }
209 4 : if (NULL != unit_active)
210 : {
211 4 : if (0 != json_object_set_new (req_obj,
212 : "unit_active",
213 4 : json_boolean (*unit_active)))
214 : {
215 0 : json_decref (req_obj);
216 0 : return NULL;
217 : }
218 : }
219 4 : if (0 == json_object_size (req_obj))
220 : {
221 0 : json_decref (req_obj);
222 0 : GNUNET_break (0);
223 0 : return NULL;
224 : }
225 :
226 4 : GNUNET_asprintf (&path,
227 : "private/units/%s",
228 : unit_id);
229 4 : uph = GNUNET_new (struct TALER_MERCHANT_UnitPatchHandle);
230 4 : uph->ctx = ctx;
231 4 : uph->cb = cb;
232 4 : uph->cb_cls = cb_cls;
233 4 : uph->url = TALER_url_join (backend_url,
234 : path,
235 : NULL);
236 4 : GNUNET_free (path);
237 4 : if (NULL == uph->url)
238 : {
239 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
240 : "Failed to build /private/units/%s URL\n",
241 : unit_id);
242 0 : json_decref (req_obj);
243 0 : GNUNET_free (uph);
244 0 : return NULL;
245 : }
246 : {
247 : CURL *eh;
248 :
249 4 : eh = TALER_MERCHANT_curl_easy_get_ (uph->url);
250 4 : if (GNUNET_OK !=
251 4 : TALER_curl_easy_post (&uph->post_ctx,
252 : eh,
253 : req_obj))
254 : {
255 0 : GNUNET_break (0);
256 0 : curl_easy_cleanup (eh);
257 0 : json_decref (req_obj);
258 0 : GNUNET_free (uph->url);
259 0 : GNUNET_free (uph);
260 0 : return NULL;
261 : }
262 4 : json_decref (req_obj);
263 4 : GNUNET_assert (CURLE_OK ==
264 : curl_easy_setopt (eh,
265 : CURLOPT_CUSTOMREQUEST,
266 : MHD_HTTP_METHOD_PATCH));
267 8 : uph->job = GNUNET_CURL_job_add2 (ctx,
268 : eh,
269 4 : uph->post_ctx.headers,
270 : &handle_patch_unit_finished,
271 : uph);
272 : }
273 4 : return uph;
274 : }
275 :
276 :
277 : void
278 4 : TALER_MERCHANT_unit_patch_cancel (struct TALER_MERCHANT_UnitPatchHandle *uph)
279 : {
280 4 : if (NULL != uph->job)
281 : {
282 0 : GNUNET_CURL_job_cancel (uph->job);
283 0 : uph->job = NULL;
284 : }
285 4 : TALER_curl_easy_post_finished (&uph->post_ctx);
286 4 : GNUNET_free (uph->url);
287 4 : GNUNET_free (uph);
288 4 : }
289 :
290 :
291 : /* end of merchant_api_patch_unit.c */
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