Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025-2026 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify
6 : it under the terms of the GNU Lesser General Public License as
7 : published by the Free Software Foundation; either version 2.1,
8 : or (at your option) any later version.
9 :
10 : TALER is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General
16 : Public License along with TALER; see the file COPYING.LGPL.
17 : If not, see <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file merchant_api_post-private-units-new.c
21 : * @brief Implementation of the POST /private/units request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/post-private-units.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /private/units operation.
39 : */
40 : struct TALER_MERCHANT_PostPrivateUnitsHandle
41 : {
42 : /**
43 : * Base URL of the merchant backend.
44 : */
45 : char *base_url;
46 :
47 : /**
48 : * The full URL for this request.
49 : */
50 : char *url;
51 :
52 : /**
53 : * Handle for the request.
54 : */
55 : struct GNUNET_CURL_Job *job;
56 :
57 : /**
58 : * Function to call with the result.
59 : */
60 : TALER_MERCHANT_PostPrivateUnitsCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_POST_PRIVATE_UNITS_RESULT_CLOSURE *cb_cls;
66 :
67 : /**
68 : * Reference to the execution context.
69 : */
70 : struct GNUNET_CURL_Context *ctx;
71 :
72 : /**
73 : * Minor context that holds body and headers.
74 : */
75 : struct TALER_CURL_PostContext post_ctx;
76 :
77 : /**
78 : * Unit identifier.
79 : */
80 : char *unit_id;
81 :
82 : /**
83 : * Long human-readable name.
84 : */
85 : char *unit_name_long;
86 :
87 : /**
88 : * Short symbol for the unit.
89 : */
90 : char *unit_name_short;
91 :
92 : /**
93 : * Whether fractional quantities are allowed.
94 : */
95 : bool unit_allow_fraction;
96 :
97 : /**
98 : * Precision level for fractional quantities.
99 : */
100 : uint32_t unit_precision_level;
101 :
102 : /**
103 : * Whether the unit is active.
104 : */
105 : bool unit_active;
106 :
107 : /**
108 : * Whether @e unit_allow_fraction was explicitly set via options.
109 : */
110 : bool have_unit_allow_fraction;
111 :
112 : /**
113 : * Whether @e unit_precision_level was explicitly set via options.
114 : */
115 : bool have_unit_precision_level;
116 :
117 : /**
118 : * Whether @e unit_active was explicitly set via options.
119 : */
120 : bool have_unit_active;
121 :
122 : /**
123 : * Optional internationalized long names (JSON).
124 : */
125 : json_t *unit_name_long_i18n;
126 :
127 : /**
128 : * Optional internationalized short names (JSON).
129 : */
130 : json_t *unit_name_short_i18n;
131 : };
132 :
133 :
134 : /**
135 : * Function called when we're done processing the
136 : * HTTP POST /private/units request.
137 : *
138 : * @param cls the `struct TALER_MERCHANT_PostPrivateUnitsHandle`
139 : * @param response_code HTTP response code, 0 on error
140 : * @param response response body, NULL if not in JSON
141 : */
142 : static void
143 0 : handle_post_units_finished (void *cls,
144 : long response_code,
145 : const void *response)
146 : {
147 0 : struct TALER_MERCHANT_PostPrivateUnitsHandle *ppuh = cls;
148 0 : const json_t *json = response;
149 0 : struct TALER_MERCHANT_PostPrivateUnitsResponse pur = {
150 0 : .hr.http_status = (unsigned int) response_code,
151 : .hr.reply = json
152 : };
153 :
154 0 : ppuh->job = NULL;
155 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
156 : "POST /private/units completed with response code %u\n",
157 : (unsigned int) response_code);
158 0 : switch (response_code)
159 : {
160 0 : case 0:
161 0 : pur.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
162 0 : break;
163 0 : case MHD_HTTP_NO_CONTENT:
164 0 : break;
165 0 : case MHD_HTTP_BAD_REQUEST:
166 : case MHD_HTTP_UNAUTHORIZED:
167 : case MHD_HTTP_FORBIDDEN:
168 : case MHD_HTTP_NOT_FOUND:
169 : case MHD_HTTP_CONFLICT:
170 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
171 0 : pur.hr.ec = TALER_JSON_get_error_code (json);
172 0 : pur.hr.hint = TALER_JSON_get_error_hint (json);
173 0 : break;
174 0 : default:
175 0 : TALER_MERCHANT_parse_error_details_ (json,
176 : response_code,
177 : &pur.hr);
178 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
179 : "Unexpected response code %u/%d\n",
180 : (unsigned int) response_code,
181 : (int) pur.hr.ec);
182 0 : GNUNET_break_op (0);
183 0 : break;
184 : }
185 0 : ppuh->cb (ppuh->cb_cls,
186 : &pur);
187 0 : TALER_MERCHANT_post_private_units_cancel (ppuh);
188 0 : }
189 :
190 :
191 : struct TALER_MERCHANT_PostPrivateUnitsHandle *
192 0 : TALER_MERCHANT_post_private_units_create (
193 : struct GNUNET_CURL_Context *ctx,
194 : const char *url,
195 : const char *unit_id,
196 : const char *unit_name_long,
197 : const char *unit_name_short)
198 : {
199 : struct TALER_MERCHANT_PostPrivateUnitsHandle *ppuh;
200 :
201 0 : ppuh = GNUNET_new (struct TALER_MERCHANT_PostPrivateUnitsHandle);
202 0 : ppuh->ctx = ctx;
203 0 : ppuh->base_url = GNUNET_strdup (url);
204 0 : ppuh->unit_id = GNUNET_strdup (unit_id);
205 0 : ppuh->unit_name_long = GNUNET_strdup (unit_name_long);
206 0 : ppuh->unit_name_short = GNUNET_strdup (unit_name_short);
207 0 : return ppuh;
208 : }
209 :
210 :
211 : enum GNUNET_GenericReturnValue
212 0 : TALER_MERCHANT_post_private_units_set_options_ (
213 : struct TALER_MERCHANT_PostPrivateUnitsHandle *ppuh,
214 : unsigned int num_options,
215 : const struct TALER_MERCHANT_PostPrivateUnitsOptionValue *options)
216 : {
217 0 : for (unsigned int i = 0; i < num_options; i++)
218 : {
219 0 : switch (options[i].option)
220 : {
221 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_END:
222 0 : return GNUNET_OK;
223 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_UNIT_NAME_LONG_I18N:
224 : ppuh->unit_name_long_i18n
225 0 : = json_incref ((json_t *) options[i].details.unit_name_long_i18n);
226 0 : break;
227 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_UNIT_NAME_SHORT_I18N:
228 : ppuh->unit_name_short_i18n
229 0 : = json_incref ((json_t *) options[i].details.unit_name_short_i18n);
230 0 : break;
231 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_UNIT_ALLOW_FRACTION:
232 0 : ppuh->unit_allow_fraction = options[i].details.unit_allow_fraction;
233 0 : ppuh->have_unit_allow_fraction = true;
234 0 : break;
235 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_UNIT_PRECISION_LEVEL:
236 0 : ppuh->unit_precision_level = options[i].details.unit_precision_level;
237 0 : ppuh->have_unit_precision_level = true;
238 0 : break;
239 0 : case TALER_MERCHANT_POST_PRIVATE_UNITS_OPTION_UNIT_ACTIVE:
240 0 : ppuh->unit_active = options[i].details.unit_active;
241 0 : ppuh->have_unit_active = true;
242 0 : break;
243 0 : default:
244 0 : GNUNET_break (0);
245 0 : return GNUNET_SYSERR;
246 : }
247 : }
248 0 : return GNUNET_OK;
249 : }
250 :
251 :
252 : enum TALER_ErrorCode
253 0 : TALER_MERCHANT_post_private_units_start (
254 : struct TALER_MERCHANT_PostPrivateUnitsHandle *ppuh,
255 : TALER_MERCHANT_PostPrivateUnitsCallback cb,
256 : TALER_MERCHANT_POST_PRIVATE_UNITS_RESULT_CLOSURE *cb_cls)
257 : {
258 : json_t *req_obj;
259 : CURL *eh;
260 :
261 0 : ppuh->cb = cb;
262 0 : ppuh->cb_cls = cb_cls;
263 0 : ppuh->url = TALER_url_join (ppuh->base_url,
264 : "private/units",
265 : NULL);
266 0 : if (NULL == ppuh->url)
267 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
268 0 : req_obj = GNUNET_JSON_PACK (
269 : GNUNET_JSON_pack_string ("unit",
270 : ppuh->unit_id),
271 : GNUNET_JSON_pack_string ("unit_name_long",
272 : ppuh->unit_name_long),
273 : GNUNET_JSON_pack_string ("unit_name_short",
274 : ppuh->unit_name_short),
275 : GNUNET_JSON_pack_bool ("unit_allow_fraction",
276 : ppuh->have_unit_allow_fraction
277 : ? ppuh->unit_allow_fraction
278 : : false),
279 : GNUNET_JSON_pack_uint64 ("unit_precision_level",
280 : ppuh->have_unit_precision_level
281 : ? (uint64_t) ppuh->unit_precision_level
282 : : 0),
283 : GNUNET_JSON_pack_bool ("unit_active",
284 : ppuh->have_unit_active
285 : ? ppuh->unit_active
286 : : true),
287 : GNUNET_JSON_pack_allow_null (
288 : GNUNET_JSON_pack_object_incref ("unit_name_long_i18n",
289 : ppuh->unit_name_long_i18n)),
290 : GNUNET_JSON_pack_allow_null (
291 : GNUNET_JSON_pack_object_incref ("unit_name_short_i18n",
292 : ppuh->unit_name_short_i18n)));
293 0 : eh = TALER_MERCHANT_curl_easy_get_ (ppuh->url);
294 0 : if ( (NULL == eh) ||
295 : (GNUNET_OK !=
296 0 : TALER_curl_easy_post (&ppuh->post_ctx,
297 : eh,
298 : req_obj)) )
299 : {
300 0 : GNUNET_break (0);
301 0 : json_decref (req_obj);
302 0 : if (NULL != eh)
303 0 : curl_easy_cleanup (eh);
304 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
305 : }
306 0 : json_decref (req_obj);
307 0 : ppuh->job = GNUNET_CURL_job_add2 (ppuh->ctx,
308 : eh,
309 0 : ppuh->post_ctx.headers,
310 : &handle_post_units_finished,
311 : ppuh);
312 0 : if (NULL == ppuh->job)
313 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
314 0 : return TALER_EC_NONE;
315 : }
316 :
317 :
318 : void
319 0 : TALER_MERCHANT_post_private_units_cancel (
320 : struct TALER_MERCHANT_PostPrivateUnitsHandle *ppuh)
321 : {
322 0 : if (NULL != ppuh->job)
323 : {
324 0 : GNUNET_CURL_job_cancel (ppuh->job);
325 0 : ppuh->job = NULL;
326 : }
327 0 : TALER_curl_easy_post_finished (&ppuh->post_ctx);
328 0 : json_decref (ppuh->unit_name_long_i18n);
329 0 : json_decref (ppuh->unit_name_short_i18n);
330 0 : GNUNET_free (ppuh->unit_id);
331 0 : GNUNET_free (ppuh->unit_name_long);
332 0 : GNUNET_free (ppuh->unit_name_short);
333 0 : GNUNET_free (ppuh->url);
334 0 : GNUNET_free (ppuh->base_url);
335 0 : GNUNET_free (ppuh);
336 0 : }
337 :
338 :
339 : /* end of merchant_api_post-private-units-new.c */
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