Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2023 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, but
11 : 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 Public
16 : License along with TALER; see the file COPYING.LGPL. If not,
17 : see <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file merchant_api_post_orders.c
21 : * @brief Implementation of the POST /orders
22 : * @author Christian Grothoff
23 : * @author Marcello Stanisci
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <jansson.h>
28 : #include <microhttpd.h> /* just for HTTP status codes */
29 : #include <gnunet/gnunet_util_lib.h>
30 : #include <gnunet/gnunet_curl_lib.h>
31 : #include "taler_merchant_service.h"
32 : #include "merchant_api_curl_defaults.h"
33 : #include "merchant_api_common.h"
34 : #include <taler/taler_json_lib.h>
35 : #include <taler/taler_signatures.h>
36 : #include <taler/taler_curl_lib.h>
37 :
38 :
39 : /**
40 : * @brief A POST /orders Handle
41 : */
42 : struct TALER_MERCHANT_PostOrdersHandle
43 : {
44 :
45 : /**
46 : * The 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_PostOrdersCallback cb;
59 :
60 : /**
61 : * Closure for @a cb.
62 : */
63 : void *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 :
77 : /**
78 : * Function called when we're done processing the
79 : * HTTP POST /orders request.
80 : *
81 : * @param cls the `struct TALER_MERCHANT_PostOrdersHandle`
82 : * @param response_code HTTP response code, 0 on error
83 : * @param response response body, NULL if not JSON
84 : */
85 : static void
86 51 : handle_post_order_finished (void *cls,
87 : long response_code,
88 : const void *response)
89 : {
90 51 : struct TALER_MERCHANT_PostOrdersHandle *po = cls;
91 51 : const json_t *json = response;
92 :
93 51 : po->job = NULL;
94 51 : TALER_MERCHANT_handle_order_creation_response_ (po->cb,
95 : po->cb_cls,
96 : response_code,
97 : json);
98 51 : TALER_MERCHANT_orders_post_cancel (po);
99 51 : }
100 :
101 :
102 : struct TALER_MERCHANT_PostOrdersHandle *
103 32 : TALER_MERCHANT_orders_post (struct GNUNET_CURL_Context *ctx,
104 : const char *backend_url,
105 : const json_t *order,
106 : struct GNUNET_TIME_Relative refund_delay,
107 : TALER_MERCHANT_PostOrdersCallback cb,
108 : void *cb_cls)
109 : {
110 : static const char *no_uuids[GNUNET_NZL (0)];
111 :
112 32 : return TALER_MERCHANT_orders_post2 (ctx,
113 : backend_url,
114 : order,
115 : refund_delay,
116 : NULL,
117 : 0,
118 : NULL,
119 : 0,
120 : no_uuids,
121 : true,
122 : cb,
123 : cb_cls);
124 : }
125 :
126 :
127 : struct TALER_MERCHANT_PostOrdersHandle *
128 51 : TALER_MERCHANT_orders_post2 (
129 : struct GNUNET_CURL_Context *ctx,
130 : const char *backend_url,
131 : const json_t *order,
132 : struct GNUNET_TIME_Relative refund_delay,
133 : const char *payment_target,
134 : unsigned int inventory_products_length,
135 : const struct TALER_MERCHANT_InventoryProduct inventory_products[],
136 : unsigned int uuids_length,
137 : const char *uuids[static uuids_length],
138 : bool create_token,
139 : TALER_MERCHANT_PostOrdersCallback cb,
140 : void *cb_cls)
141 51 : {
142 51 : return TALER_MERCHANT_orders_post3 (
143 : ctx,
144 : backend_url,
145 : order,
146 : NULL, /* session ID */
147 : refund_delay,
148 : payment_target,
149 : inventory_products_length,
150 : inventory_products,
151 : uuids_length,
152 : uuids,
153 : create_token,
154 : cb,
155 : cb_cls);
156 : }
157 :
158 :
159 : struct TALER_MERCHANT_PostOrdersHandle *
160 51 : TALER_MERCHANT_orders_post3 (
161 : struct GNUNET_CURL_Context *ctx,
162 : const char *backend_url,
163 : const json_t *order,
164 : const char *session_id,
165 : struct GNUNET_TIME_Relative refund_delay,
166 : const char *payment_target,
167 : unsigned int inventory_products_length,
168 : const struct TALER_MERCHANT_InventoryProduct inventory_products[],
169 : unsigned int uuids_length,
170 : const char *uuids[static uuids_length],
171 : bool create_token,
172 : TALER_MERCHANT_PostOrdersCallback cb,
173 : void *cb_cls)
174 51 : {
175 : struct TALER_MERCHANT_PostOrdersHandle *po;
176 : json_t *req;
177 : CURL *eh;
178 :
179 51 : po = GNUNET_new (struct TALER_MERCHANT_PostOrdersHandle);
180 51 : po->ctx = ctx;
181 51 : po->cb = cb;
182 51 : po->cb_cls = cb_cls;
183 51 : po->url = TALER_url_join (backend_url,
184 : "private/orders",
185 : NULL);
186 51 : req = GNUNET_JSON_PACK (
187 : GNUNET_JSON_pack_object_incref ("order",
188 : (json_t *) order),
189 : GNUNET_JSON_pack_allow_null (
190 : GNUNET_JSON_pack_string ("session_id",
191 : session_id)),
192 : GNUNET_JSON_pack_allow_null (
193 : GNUNET_JSON_pack_string ("payment_target",
194 : payment_target)));
195 51 : if (0 != refund_delay.rel_value_us)
196 : {
197 0 : GNUNET_assert (0 ==
198 : json_object_set_new (req,
199 : "refund_delay",
200 : GNUNET_JSON_from_time_rel (
201 : refund_delay)));
202 : }
203 51 : if (0 != inventory_products_length)
204 : {
205 10 : json_t *ipa = json_array ();
206 :
207 10 : GNUNET_assert (NULL != ipa);
208 20 : for (unsigned int i = 0; i<inventory_products_length; i++)
209 : {
210 : json_t *ip;
211 :
212 10 : ip = GNUNET_JSON_PACK (
213 : GNUNET_JSON_pack_string ("product_id",
214 : inventory_products[i].product_id),
215 : GNUNET_JSON_pack_uint64 ("quantity",
216 : inventory_products[i].quantity));
217 10 : GNUNET_assert (NULL != ip);
218 10 : GNUNET_assert (0 ==
219 : json_array_append_new (ipa,
220 : ip));
221 : }
222 10 : GNUNET_assert (0 ==
223 : json_object_set_new (req,
224 : "inventory_products",
225 : ipa));
226 : }
227 51 : if (0 != uuids_length)
228 : {
229 2 : json_t *ua = json_array ();
230 :
231 2 : GNUNET_assert (NULL != ua);
232 4 : for (unsigned int i = 0; i<uuids_length; i++)
233 : {
234 : json_t *u;
235 :
236 2 : u = json_string (uuids[i]);
237 2 : GNUNET_assert (0 ==
238 : json_array_append_new (ua,
239 : u));
240 : }
241 2 : GNUNET_assert (0 ==
242 : json_object_set_new (req,
243 : "lock_uuids",
244 : ua));
245 : }
246 51 : if (! create_token)
247 : {
248 4 : GNUNET_assert (0 ==
249 : json_object_set_new (req,
250 : "create_token",
251 : json_boolean (create_token)));
252 : }
253 51 : eh = TALER_MERCHANT_curl_easy_get_ (po->url);
254 51 : if (GNUNET_OK !=
255 51 : TALER_curl_easy_post (&po->post_ctx,
256 : eh,
257 : req))
258 : {
259 0 : GNUNET_break (0);
260 0 : curl_easy_cleanup (eh);
261 0 : json_decref (req);
262 0 : GNUNET_free (po);
263 0 : return NULL;
264 : }
265 51 : json_decref (req);
266 102 : po->job = GNUNET_CURL_job_add2 (ctx,
267 : eh,
268 51 : po->post_ctx.headers,
269 : &handle_post_order_finished,
270 : po);
271 51 : return po;
272 : }
273 :
274 :
275 : void
276 51 : TALER_MERCHANT_orders_post_cancel (
277 : struct TALER_MERCHANT_PostOrdersHandle *po)
278 : {
279 51 : if (NULL != po->job)
280 : {
281 0 : GNUNET_CURL_job_cancel (po->job);
282 0 : po->job = NULL;
283 : }
284 51 : GNUNET_free (po->url);
285 51 : TALER_curl_easy_post_finished (&po->post_ctx);
286 51 : GNUNET_free (po);
287 51 : }
288 :
289 :
290 : /* end of merchant_api_post_orders.c */
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