Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2026 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 Software
7 : 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
11 : A 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
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file merchant_api_get-private-otp-devices-DEVICE_ID-new.c
19 : * @brief Implementation of the GET /private/otp-devices/$DEVICE_ID request
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include <taler/merchant/get-private-otp-devices-DEVICE_ID.h>
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 :
32 :
33 : /**
34 : * Handle for a GET /private/otp-devices/$DEVICE_ID operation.
35 : */
36 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle
37 : {
38 : /**
39 : * Base URL of the merchant backend.
40 : */
41 : char *base_url;
42 :
43 : /**
44 : * OTP device identifier.
45 : */
46 : char *otp_device_id;
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_GetPrivateOtpDeviceCallback cb;
62 :
63 : /**
64 : * Closure for @a cb.
65 : */
66 : TALER_MERCHANT_GET_PRIVATE_OTP_DEVICE_RESULT_CLOSURE *cb_cls;
67 :
68 : /**
69 : * Reference to the execution context.
70 : */
71 : struct GNUNET_CURL_Context *ctx;
72 :
73 : /**
74 : * Fake time for OTP code computation.
75 : */
76 : struct GNUNET_TIME_Timestamp faketime;
77 :
78 : /**
79 : * Price amount for OTP code computation.
80 : */
81 : struct TALER_Amount price;
82 :
83 : /**
84 : * True if @e faketime was explicitly set via options.
85 : */
86 : bool have_faketime;
87 :
88 : /**
89 : * True if @e price was explicitly set via options.
90 : */
91 : bool have_price;
92 : };
93 :
94 :
95 : /**
96 : * Function called when we're done processing the
97 : * HTTP GET /private/otp-devices/$DEVICE_ID request.
98 : *
99 : * @param cls the `struct TALER_MERCHANT_GetPrivateOtpDeviceHandle`
100 : * @param response_code HTTP response code, 0 on error
101 : * @param response response body, NULL if not in JSON
102 : */
103 : static void
104 0 : handle_get_otp_device_finished (void *cls,
105 : long response_code,
106 : const void *response)
107 : {
108 0 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *god = cls;
109 0 : const json_t *json = response;
110 0 : struct TALER_MERCHANT_GetPrivateOtpDeviceResponse ogr = {
111 0 : .hr.http_status = (unsigned int) response_code,
112 : .hr.reply = json
113 : };
114 :
115 0 : god->job = NULL;
116 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
117 : "Got /private/otp-devices/$DEVICE_ID response with status code %u\n",
118 : (unsigned int) response_code);
119 0 : switch (response_code)
120 : {
121 0 : case MHD_HTTP_OK:
122 : {
123 : uint32_t alg32;
124 : struct GNUNET_JSON_Specification spec[] = {
125 0 : GNUNET_JSON_spec_string ("device_description",
126 : &ogr.details.ok.otp_device_description),
127 0 : GNUNET_JSON_spec_uint32 ("otp_algorithm",
128 : &alg32),
129 0 : GNUNET_JSON_spec_mark_optional (
130 : GNUNET_JSON_spec_uint64 ("otp_ctr",
131 : &ogr.details.ok.otp_ctr),
132 : NULL),
133 0 : GNUNET_JSON_spec_mark_optional (
134 : GNUNET_JSON_spec_uint64 ("otp_timestamp",
135 : &ogr.details.ok.otp_timestamp_s),
136 : NULL),
137 0 : GNUNET_JSON_spec_mark_optional (
138 : GNUNET_JSON_spec_string ("otp_code",
139 : &ogr.details.ok.otp_code),
140 : NULL),
141 0 : GNUNET_JSON_spec_end ()
142 : };
143 :
144 0 : if (GNUNET_OK ==
145 0 : GNUNET_JSON_parse (json,
146 : spec,
147 : NULL, NULL))
148 : {
149 0 : ogr.details.ok.otp_alg =
150 : (enum TALER_MerchantConfirmationAlgorithm) alg32;
151 0 : god->cb (god->cb_cls,
152 : &ogr);
153 0 : TALER_MERCHANT_get_private_otp_device_cancel (god);
154 0 : return;
155 : }
156 0 : ogr.hr.http_status = 0;
157 0 : ogr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
158 0 : break;
159 : }
160 0 : case MHD_HTTP_UNAUTHORIZED:
161 0 : ogr.hr.ec = TALER_JSON_get_error_code (json);
162 0 : ogr.hr.hint = TALER_JSON_get_error_hint (json);
163 0 : break;
164 0 : case MHD_HTTP_NOT_FOUND:
165 0 : ogr.hr.ec = TALER_JSON_get_error_code (json);
166 0 : ogr.hr.hint = TALER_JSON_get_error_hint (json);
167 0 : break;
168 0 : default:
169 0 : ogr.hr.ec = TALER_JSON_get_error_code (json);
170 0 : ogr.hr.hint = TALER_JSON_get_error_hint (json);
171 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
172 : "Unexpected response code %u/%d\n",
173 : (unsigned int) response_code,
174 : (int) ogr.hr.ec);
175 0 : break;
176 : }
177 0 : god->cb (god->cb_cls,
178 : &ogr);
179 0 : TALER_MERCHANT_get_private_otp_device_cancel (god);
180 : }
181 :
182 :
183 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *
184 0 : TALER_MERCHANT_get_private_otp_device_create (
185 : struct GNUNET_CURL_Context *ctx,
186 : const char *url,
187 : const char *otp_device_id)
188 : {
189 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *god;
190 :
191 0 : god = GNUNET_new (struct TALER_MERCHANT_GetPrivateOtpDeviceHandle);
192 0 : god->ctx = ctx;
193 0 : god->base_url = GNUNET_strdup (url);
194 0 : god->otp_device_id = GNUNET_strdup (otp_device_id);
195 0 : return god;
196 : }
197 :
198 :
199 : enum GNUNET_GenericReturnValue
200 0 : TALER_MERCHANT_get_private_otp_device_set_options_ (
201 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *god,
202 : unsigned int num_options,
203 : const struct TALER_MERCHANT_GetPrivateOtpDeviceOptionValue *options)
204 : {
205 0 : for (unsigned int i = 0; i < num_options; i++)
206 : {
207 0 : switch (options[i].option)
208 : {
209 0 : case TALER_MERCHANT_GET_PRIVATE_OTP_DEVICE_OPTION_END:
210 0 : return GNUNET_OK;
211 0 : case TALER_MERCHANT_GET_PRIVATE_OTP_DEVICE_OPTION_FAKETIME:
212 0 : god->faketime = options[i].details.faketime;
213 0 : god->have_faketime = true;
214 0 : break;
215 0 : case TALER_MERCHANT_GET_PRIVATE_OTP_DEVICE_OPTION_PRICE:
216 0 : god->price = options[i].details.price;
217 0 : god->have_price = true;
218 0 : break;
219 0 : default:
220 0 : GNUNET_break (0);
221 0 : return GNUNET_SYSERR;
222 : }
223 : }
224 0 : return GNUNET_OK;
225 : }
226 :
227 :
228 : enum TALER_ErrorCode
229 0 : TALER_MERCHANT_get_private_otp_device_start (
230 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *god,
231 : TALER_MERCHANT_GetPrivateOtpDeviceCallback cb,
232 : TALER_MERCHANT_GET_PRIVATE_OTP_DEVICE_RESULT_CLOSURE *cb_cls)
233 : {
234 : CURL *eh;
235 :
236 0 : god->cb = cb;
237 0 : god->cb_cls = cb_cls;
238 : {
239 : char *path;
240 : char faketime_s[24];
241 :
242 0 : GNUNET_asprintf (&path,
243 : "private/otp-devices/%s",
244 : god->otp_device_id);
245 0 : if (god->have_faketime)
246 0 : GNUNET_snprintf (faketime_s,
247 : sizeof (faketime_s),
248 : "%llu",
249 : (unsigned long long)
250 0 : GNUNET_TIME_timestamp_to_s (god->faketime));
251 0 : god->url = TALER_url_join (god->base_url,
252 : path,
253 0 : god->have_faketime
254 : ? "faketime"
255 : : NULL,
256 0 : god->have_faketime
257 : ? faketime_s
258 : : NULL,
259 0 : god->have_price
260 : ? "price"
261 : : NULL,
262 0 : god->have_price
263 0 : ? TALER_amount2s (&god->price)
264 : : NULL,
265 : NULL);
266 0 : GNUNET_free (path);
267 : }
268 0 : if (NULL == god->url)
269 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
270 0 : eh = TALER_MERCHANT_curl_easy_get_ (god->url);
271 0 : if (NULL == eh)
272 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
273 0 : god->job = GNUNET_CURL_job_add (god->ctx,
274 : eh,
275 : &handle_get_otp_device_finished,
276 : god);
277 0 : if (NULL == god->job)
278 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
279 0 : return TALER_EC_NONE;
280 : }
281 :
282 :
283 : void
284 0 : TALER_MERCHANT_get_private_otp_device_cancel (
285 : struct TALER_MERCHANT_GetPrivateOtpDeviceHandle *god)
286 : {
287 0 : if (NULL != god->job)
288 : {
289 0 : GNUNET_CURL_job_cancel (god->job);
290 0 : god->job = NULL;
291 : }
292 0 : GNUNET_free (god->url);
293 0 : GNUNET_free (god->otp_device_id);
294 0 : GNUNET_free (god->base_url);
295 0 : GNUNET_free (god);
296 0 : }
297 :
298 :
299 : /* end of merchant_api_get-private-otp-devices-DEVICE_ID-new.c */
|
