Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2026 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-orders-ORDER_ID-claim.c
21 : * @brief Implementation of the POST /orders/$ID/claim request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/post-orders-ORDER_ID-claim.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 : #include <taler/taler_signatures.h>
36 :
37 :
38 : /**
39 : * Handle for a POST /orders/$ORDER_ID/claim operation.
40 : */
41 : struct TALER_MERCHANT_PostOrdersClaimHandle
42 : {
43 : /**
44 : * Base URL of the merchant backend.
45 : */
46 : char *base_url;
47 :
48 : /**
49 : * The full URL for this request.
50 : */
51 : char *url;
52 :
53 : /**
54 : * Handle for the request.
55 : */
56 : struct GNUNET_CURL_Job *job;
57 :
58 : /**
59 : * Function to call with the result.
60 : */
61 : TALER_MERCHANT_PostOrdersClaimCallback cb;
62 :
63 : /**
64 : * Closure for @a cb.
65 : */
66 : TALER_MERCHANT_POST_ORDERS_CLAIM_RESULT_CLOSURE *cb_cls;
67 :
68 : /**
69 : * Reference to the execution context.
70 : */
71 : struct GNUNET_CURL_Context *ctx;
72 :
73 : /**
74 : * Minor context that holds body and headers.
75 : */
76 : struct TALER_CURL_PostContext post_ctx;
77 :
78 : /**
79 : * Order identifier.
80 : */
81 : char *order_id;
82 :
83 : /**
84 : * Wallet nonce for claiming.
85 : */
86 : struct GNUNET_CRYPTO_EddsaPublicKey nonce;
87 :
88 : /**
89 : * Optional claim token.
90 : */
91 : const struct TALER_ClaimTokenP *token;
92 : };
93 :
94 :
95 : /**
96 : * Function called when we're done processing the
97 : * HTTP POST /orders/$ID/claim request.
98 : *
99 : * @param cls the `struct TALER_MERCHANT_PostOrdersClaimHandle`
100 : * @param response_code HTTP response code, 0 on error
101 : * @param response response body, NULL if not in JSON
102 : */
103 : static void
104 0 : handle_post_order_claim_finished (void *cls,
105 : long response_code,
106 : const void *response)
107 : {
108 0 : struct TALER_MERCHANT_PostOrdersClaimHandle *poch = cls;
109 0 : const json_t *json = response;
110 0 : struct TALER_MERCHANT_PostOrdersClaimResponse ocr = {
111 0 : .hr.http_status = (unsigned int) response_code,
112 : .hr.reply = json
113 : };
114 : struct GNUNET_JSON_Specification spec[] = {
115 0 : GNUNET_JSON_spec_object_const (
116 : "contract_terms",
117 : &ocr.details.ok.contract_terms),
118 0 : GNUNET_JSON_spec_fixed_auto (
119 : "sig",
120 : &ocr.details.ok.merchant_sig),
121 0 : GNUNET_JSON_spec_end ()
122 : };
123 :
124 0 : poch->job = NULL;
125 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
126 : "POST /orders/$ID/claim completed with response code %u\n",
127 : (unsigned int) response_code);
128 0 : switch (response_code)
129 : {
130 0 : case MHD_HTTP_OK:
131 0 : if (GNUNET_OK !=
132 0 : GNUNET_JSON_parse (json,
133 : spec,
134 : NULL, NULL))
135 : {
136 0 : GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
137 : "Claiming order failed: could not parse JSON response\n");
138 0 : GNUNET_break_op (0);
139 0 : ocr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
140 0 : ocr.hr.http_status = 0;
141 0 : break;
142 : }
143 :
144 0 : if (GNUNET_OK !=
145 0 : TALER_JSON_contract_hash (ocr.details.ok.contract_terms,
146 : &ocr.details.ok.h_contract_terms))
147 : {
148 0 : GNUNET_break (0);
149 : ocr.hr.ec
150 0 : = TALER_EC_MERCHANT_POST_ORDERS_ID_CLAIM_CLIENT_INTERNAL_FAILURE;
151 0 : ocr.hr.http_status = 0;
152 0 : break;
153 : }
154 0 : break;
155 0 : case MHD_HTTP_CONFLICT:
156 0 : ocr.hr.ec = TALER_JSON_get_error_code (json);
157 0 : ocr.hr.hint = TALER_JSON_get_error_hint (json);
158 0 : break;
159 0 : default:
160 0 : ocr.hr.ec = TALER_JSON_get_error_code (json);
161 0 : ocr.hr.hint = TALER_JSON_get_error_hint (json);
162 0 : GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
163 : "Claim order failed with HTTP status code %u/%d\n",
164 : (unsigned int) response_code,
165 : (int) ocr.hr.ec);
166 0 : break;
167 : }
168 0 : poch->cb (poch->cb_cls,
169 : &ocr);
170 0 : TALER_MERCHANT_post_orders_claim_cancel (poch);
171 0 : }
172 :
173 :
174 : struct TALER_MERCHANT_PostOrdersClaimHandle *
175 0 : TALER_MERCHANT_post_orders_claim_create (
176 : struct GNUNET_CURL_Context *ctx,
177 : const char *url,
178 : const char *order_id,
179 : const struct GNUNET_CRYPTO_EddsaPublicKey *nonce)
180 : {
181 : struct TALER_MERCHANT_PostOrdersClaimHandle *poch;
182 :
183 0 : poch = GNUNET_new (struct TALER_MERCHANT_PostOrdersClaimHandle);
184 0 : poch->ctx = ctx;
185 0 : poch->base_url = GNUNET_strdup (url);
186 0 : poch->order_id = GNUNET_strdup (order_id);
187 0 : poch->nonce = *nonce;
188 0 : return poch;
189 : }
190 :
191 :
192 : enum GNUNET_GenericReturnValue
193 0 : TALER_MERCHANT_post_orders_claim_set_options_ (
194 : struct TALER_MERCHANT_PostOrdersClaimHandle *poch,
195 : unsigned int num_options,
196 : const struct TALER_MERCHANT_PostOrdersClaimOptionValue *options)
197 : {
198 0 : for (unsigned int i = 0; i < num_options; i++)
199 : {
200 0 : switch (options[i].option)
201 : {
202 0 : case TALER_MERCHANT_POST_ORDERS_CLAIM_OPTION_END:
203 0 : return GNUNET_OK;
204 0 : case TALER_MERCHANT_POST_ORDERS_CLAIM_OPTION_TOKEN:
205 0 : poch->token = options[i].details.token;
206 0 : break;
207 0 : default:
208 0 : GNUNET_break (0);
209 0 : return GNUNET_SYSERR;
210 : }
211 : }
212 0 : return GNUNET_OK;
213 : }
214 :
215 :
216 : enum TALER_ErrorCode
217 0 : TALER_MERCHANT_post_orders_claim_start (
218 : struct TALER_MERCHANT_PostOrdersClaimHandle *poch,
219 : TALER_MERCHANT_PostOrdersClaimCallback cb,
220 : TALER_MERCHANT_POST_ORDERS_CLAIM_RESULT_CLOSURE *cb_cls)
221 : {
222 : json_t *req_obj;
223 : CURL *eh;
224 :
225 0 : poch->cb = cb;
226 0 : poch->cb_cls = cb_cls;
227 : {
228 : char *path;
229 :
230 0 : GNUNET_asprintf (&path,
231 : "orders/%s/claim",
232 : poch->order_id);
233 0 : poch->url = TALER_url_join (poch->base_url,
234 : path,
235 : NULL);
236 0 : GNUNET_free (path);
237 : }
238 0 : if (NULL == poch->url)
239 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
240 0 : req_obj = GNUNET_JSON_PACK (
241 : GNUNET_JSON_pack_data_auto ("nonce",
242 : &poch->nonce),
243 : GNUNET_JSON_pack_allow_null (
244 : GNUNET_JSON_pack_data_auto ("token",
245 : poch->token)));
246 0 : eh = TALER_MERCHANT_curl_easy_get_ (poch->url);
247 0 : if ( (NULL == eh) ||
248 : (GNUNET_OK !=
249 0 : TALER_curl_easy_post (&poch->post_ctx,
250 : eh,
251 : req_obj)) )
252 : {
253 0 : GNUNET_break (0);
254 0 : json_decref (req_obj);
255 0 : if (NULL != eh)
256 0 : curl_easy_cleanup (eh);
257 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
258 : }
259 0 : json_decref (req_obj);
260 0 : poch->job = GNUNET_CURL_job_add2 (poch->ctx,
261 : eh,
262 0 : poch->post_ctx.headers,
263 : &handle_post_order_claim_finished,
264 : poch);
265 0 : if (NULL == poch->job)
266 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
267 0 : return TALER_EC_NONE;
268 : }
269 :
270 :
271 : void
272 0 : TALER_MERCHANT_post_orders_claim_cancel (
273 : struct TALER_MERCHANT_PostOrdersClaimHandle *poch)
274 : {
275 0 : if (NULL != poch->job)
276 : {
277 0 : GNUNET_CURL_job_cancel (poch->job);
278 0 : poch->job = NULL;
279 : }
280 0 : TALER_curl_easy_post_finished (&poch->post_ctx);
281 0 : GNUNET_free (poch->order_id);
282 0 : GNUNET_free (poch->url);
283 0 : GNUNET_free (poch->base_url);
284 0 : GNUNET_free (poch);
285 0 : }
286 :
287 :
288 : /* end of merchant_api_post-orders-ORDER_ID-claim.c */
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