Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020-2026 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-products-PRODUCT_ID-lock-new.c
21 : * @brief Implementation of the POST /private/products/$PRODUCT_ID/lock request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/post-private-products-PRODUCT_ID-lock.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /private/products/$PRODUCT_ID/lock operation.
39 : */
40 : struct TALER_MERCHANT_PostPrivateProductsLockHandle
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_PostPrivateProductsLockCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_POST_PRIVATE_PRODUCTS_LOCK_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 : * Product identifier.
79 : */
80 : char *product_id;
81 :
82 : /**
83 : * Lock UUID.
84 : */
85 : char *uuid;
86 :
87 : /**
88 : * How long to lock the inventory.
89 : */
90 : struct GNUNET_TIME_Relative duration;
91 :
92 : /**
93 : * Number of units to lock.
94 : */
95 : uint64_t quantity;
96 :
97 : /**
98 : * Fractional part of the quantity.
99 : */
100 : uint32_t quantity_frac;
101 :
102 : /**
103 : * Whether to use fractional quantity.
104 : */
105 : bool use_fractional_quantity;
106 : };
107 :
108 :
109 : /**
110 : * Function called when we're done processing the
111 : * HTTP POST /private/products/$PRODUCT_ID/lock request.
112 : *
113 : * @param cls the `struct TALER_MERCHANT_PostPrivateProductsLockHandle`
114 : * @param response_code HTTP response code, 0 on error
115 : * @param response response body, NULL if not in JSON
116 : */
117 : static void
118 0 : handle_post_products_lock_finished (void *cls,
119 : long response_code,
120 : const void *response)
121 : {
122 0 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *pplh = cls;
123 0 : const json_t *json = response;
124 0 : struct TALER_MERCHANT_PostPrivateProductsLockResponse plr = {
125 0 : .hr.http_status = (unsigned int) response_code,
126 : .hr.reply = json
127 : };
128 :
129 0 : pplh->job = NULL;
130 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
131 : "POST /private/products/$PRODUCT_ID/lock completed with response code %u\n",
132 : (unsigned int) response_code);
133 0 : switch (response_code)
134 : {
135 0 : case 0:
136 0 : plr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
137 0 : break;
138 0 : case MHD_HTTP_NO_CONTENT:
139 0 : break;
140 0 : case MHD_HTTP_UNAUTHORIZED:
141 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
142 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
143 0 : break;
144 0 : case MHD_HTTP_BAD_REQUEST:
145 0 : GNUNET_break_op (0);
146 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
147 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
148 0 : break;
149 0 : case MHD_HTTP_FORBIDDEN:
150 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
151 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
152 0 : break;
153 0 : case MHD_HTTP_NOT_FOUND:
154 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
155 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
156 0 : break;
157 0 : case MHD_HTTP_GONE:
158 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
159 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
160 0 : break;
161 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
162 0 : plr.hr.ec = TALER_JSON_get_error_code (json);
163 0 : plr.hr.hint = TALER_JSON_get_error_hint (json);
164 0 : break;
165 0 : default:
166 0 : TALER_MERCHANT_parse_error_details_ (json,
167 : response_code,
168 : &plr.hr);
169 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
170 : "Unexpected response code %u/%d\n",
171 : (unsigned int) response_code,
172 : (int) plr.hr.ec);
173 0 : GNUNET_break_op (0);
174 0 : break;
175 : }
176 0 : pplh->cb (pplh->cb_cls,
177 : &plr);
178 0 : TALER_MERCHANT_post_private_products_lock_cancel (pplh);
179 0 : }
180 :
181 :
182 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *
183 0 : TALER_MERCHANT_post_private_products_lock_create (
184 : struct GNUNET_CURL_Context *ctx,
185 : const char *url,
186 : const char *product_id,
187 : const char *uuid,
188 : struct GNUNET_TIME_Relative duration,
189 : uint64_t quantity)
190 : {
191 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *pplh;
192 :
193 0 : pplh = GNUNET_new (struct TALER_MERCHANT_PostPrivateProductsLockHandle);
194 0 : pplh->ctx = ctx;
195 0 : pplh->base_url = GNUNET_strdup (url);
196 0 : pplh->product_id = GNUNET_strdup (product_id);
197 0 : pplh->uuid = GNUNET_strdup (uuid);
198 0 : pplh->duration = duration;
199 0 : pplh->quantity = quantity;
200 0 : return pplh;
201 : }
202 :
203 :
204 : enum GNUNET_GenericReturnValue
205 0 : TALER_MERCHANT_post_private_products_lock_set_options_ (
206 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *pplh,
207 : unsigned int num_options,
208 : const struct TALER_MERCHANT_PostPrivateProductsLockOptionValue *options)
209 : {
210 0 : for (unsigned int i = 0; i < num_options; i++)
211 : {
212 0 : switch (options[i].option)
213 : {
214 0 : case TALER_MERCHANT_POST_PRIVATE_PRODUCTS_LOCK_OPTION_END:
215 0 : return GNUNET_OK;
216 0 : case TALER_MERCHANT_POST_PRIVATE_PRODUCTS_LOCK_OPTION_QUANTITY_FRAC:
217 0 : pplh->quantity_frac = options[i].details.quantity_frac;
218 0 : break;
219 0 : case
220 : TALER_MERCHANT_POST_PRIVATE_PRODUCTS_LOCK_OPTION_USE_FRACTIONAL_QUANTITY:
221 : pplh->use_fractional_quantity
222 0 : = options[i].details.use_fractional_quantity;
223 0 : break;
224 0 : default:
225 0 : GNUNET_break (0);
226 0 : return GNUNET_SYSERR;
227 : }
228 : }
229 0 : return GNUNET_OK;
230 : }
231 :
232 :
233 : enum TALER_ErrorCode
234 0 : TALER_MERCHANT_post_private_products_lock_start (
235 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *pplh,
236 : TALER_MERCHANT_PostPrivateProductsLockCallback cb,
237 : TALER_MERCHANT_POST_PRIVATE_PRODUCTS_LOCK_RESULT_CLOSURE *cb_cls)
238 : {
239 : json_t *req_obj;
240 : CURL *eh;
241 : char unit_quantity_buf[64];
242 :
243 0 : pplh->cb = cb;
244 0 : pplh->cb_cls = cb_cls;
245 : {
246 : char *path;
247 :
248 0 : GNUNET_asprintf (&path,
249 : "private/products/%s/lock",
250 : pplh->product_id);
251 0 : pplh->url = TALER_url_join (pplh->base_url,
252 : path,
253 : NULL);
254 0 : GNUNET_free (path);
255 : }
256 0 : if (NULL == pplh->url)
257 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
258 0 : GNUNET_assert ( (0 == pplh->quantity_frac) ||
259 : pplh->use_fractional_quantity);
260 0 : TALER_MERCHANT_format_quantity_string (pplh->quantity,
261 : pplh->quantity_frac,
262 : unit_quantity_buf,
263 : sizeof (unit_quantity_buf));
264 0 : req_obj = GNUNET_JSON_PACK (
265 : GNUNET_JSON_pack_string ("lock_uuid",
266 : pplh->uuid),
267 : GNUNET_JSON_pack_time_rel ("duration",
268 : pplh->duration),
269 : GNUNET_JSON_pack_string ("unit_quantity",
270 : unit_quantity_buf));
271 0 : eh = TALER_MERCHANT_curl_easy_get_ (pplh->url);
272 0 : if ( (NULL == eh) ||
273 : (GNUNET_OK !=
274 0 : TALER_curl_easy_post (&pplh->post_ctx,
275 : eh,
276 : req_obj)) )
277 : {
278 0 : GNUNET_break (0);
279 0 : json_decref (req_obj);
280 0 : if (NULL != eh)
281 0 : curl_easy_cleanup (eh);
282 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
283 : }
284 0 : json_decref (req_obj);
285 0 : pplh->job = GNUNET_CURL_job_add2 (pplh->ctx,
286 : eh,
287 0 : pplh->post_ctx.headers,
288 : &handle_post_products_lock_finished,
289 : pplh);
290 0 : if (NULL == pplh->job)
291 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
292 0 : return TALER_EC_NONE;
293 : }
294 :
295 :
296 : void
297 0 : TALER_MERCHANT_post_private_products_lock_cancel (
298 : struct TALER_MERCHANT_PostPrivateProductsLockHandle *pplh)
299 : {
300 0 : if (NULL != pplh->job)
301 : {
302 0 : GNUNET_CURL_job_cancel (pplh->job);
303 0 : pplh->job = NULL;
304 : }
305 0 : TALER_curl_easy_post_finished (&pplh->post_ctx);
306 0 : GNUNET_free (pplh->product_id);
307 0 : GNUNET_free (pplh->uuid);
308 0 : GNUNET_free (pplh->url);
309 0 : GNUNET_free (pplh->base_url);
310 0 : GNUNET_free (pplh);
311 0 : }
312 :
313 :
314 : /* end of merchant_api_post-private-products-PRODUCT_ID-lock-new.c */
|
