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-new.c
19 : * @brief Implementation of the GET /private/otp-devices 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.h>
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 :
32 : /**
33 : * Maximum number of OTP devices we return.
34 : */
35 : #define MAX_OTP 1024
36 :
37 :
38 : /**
39 : * Handle for a GET /private/otp-devices operation.
40 : */
41 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle
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_GetPrivateOtpDevicesCallback cb;
62 :
63 : /**
64 : * Closure for @a cb.
65 : */
66 : TALER_MERCHANT_GET_PRIVATE_OTP_DEVICES_RESULT_CLOSURE *cb_cls;
67 :
68 : /**
69 : * Reference to the execution context.
70 : */
71 : struct GNUNET_CURL_Context *ctx;
72 : };
73 :
74 :
75 : /**
76 : * Parse OTP device information from @a ia.
77 : *
78 : * @param ia JSON array (or NULL!) with otp_device data
79 : * @param[in] ogr partially filled response
80 : * @param gpoh operation handle
81 : * @return #GNUNET_OK on success
82 : */
83 : static enum GNUNET_GenericReturnValue
84 0 : parse_otp_devices (const json_t *ia,
85 : struct TALER_MERCHANT_GetPrivateOtpDevicesResponse *ogr,
86 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *gpoh)
87 : {
88 0 : unsigned int otp_len = (unsigned int) json_array_size (ia);
89 :
90 0 : if ( (json_array_size (ia) != (size_t) otp_len) ||
91 : (otp_len > MAX_OTP) )
92 : {
93 0 : GNUNET_break (0);
94 0 : return GNUNET_SYSERR;
95 : }
96 0 : {
97 0 : struct TALER_MERCHANT_GetPrivateOtpDevicesOtpDeviceEntry otp[
98 0 : GNUNET_NZL (otp_len)];
99 : size_t index;
100 : json_t *value;
101 :
102 0 : json_array_foreach (ia, index, value) {
103 0 : struct TALER_MERCHANT_GetPrivateOtpDevicesOtpDeviceEntry *ie =
104 : &otp[index];
105 : struct GNUNET_JSON_Specification spec[] = {
106 0 : GNUNET_JSON_spec_string ("otp_device_id",
107 : &ie->otp_device_id),
108 0 : GNUNET_JSON_spec_string ("device_description",
109 : &ie->otp_device_description),
110 0 : GNUNET_JSON_spec_end ()
111 : };
112 :
113 0 : if (GNUNET_OK !=
114 0 : GNUNET_JSON_parse (value,
115 : spec,
116 : NULL, NULL))
117 : {
118 0 : GNUNET_break_op (0);
119 0 : return GNUNET_SYSERR;
120 : }
121 : }
122 0 : ogr->details.ok.otp_devices_length = otp_len;
123 0 : ogr->details.ok.otp_devices = otp;
124 0 : gpoh->cb (gpoh->cb_cls,
125 : ogr);
126 0 : gpoh->cb = NULL;
127 : }
128 0 : return GNUNET_OK;
129 : }
130 :
131 :
132 : /**
133 : * Function called when we're done processing the
134 : * HTTP GET /private/otp-devices request.
135 : *
136 : * @param cls the `struct TALER_MERCHANT_GetPrivateOtpDevicesHandle`
137 : * @param response_code HTTP response code, 0 on error
138 : * @param response response body, NULL if not in JSON
139 : */
140 : static void
141 0 : handle_get_otp_devices_finished (void *cls,
142 : long response_code,
143 : const void *response)
144 : {
145 0 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *gpoh = cls;
146 0 : const json_t *json = response;
147 0 : struct TALER_MERCHANT_GetPrivateOtpDevicesResponse ogr = {
148 0 : .hr.http_status = (unsigned int) response_code,
149 : .hr.reply = json
150 : };
151 :
152 0 : gpoh->job = NULL;
153 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
154 : "Got /private/otp-devices response with status code %u\n",
155 : (unsigned int) response_code);
156 0 : switch (response_code)
157 : {
158 0 : case MHD_HTTP_OK:
159 : {
160 : const json_t *otp_devices;
161 : struct GNUNET_JSON_Specification spec[] = {
162 0 : GNUNET_JSON_spec_array_const ("otp_devices",
163 : &otp_devices),
164 0 : GNUNET_JSON_spec_end ()
165 : };
166 :
167 0 : if (GNUNET_OK !=
168 0 : GNUNET_JSON_parse (json,
169 : spec,
170 : NULL, NULL))
171 : {
172 0 : ogr.hr.http_status = 0;
173 0 : ogr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
174 0 : break;
175 : }
176 0 : if (GNUNET_OK ==
177 0 : parse_otp_devices (otp_devices,
178 : &ogr,
179 : gpoh))
180 : {
181 0 : TALER_MERCHANT_get_private_otp_devices_cancel (gpoh);
182 0 : return;
183 : }
184 0 : ogr.hr.http_status = 0;
185 0 : ogr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
186 0 : break;
187 : }
188 0 : case MHD_HTTP_UNAUTHORIZED:
189 0 : ogr.hr.ec = TALER_JSON_get_error_code (json);
190 0 : ogr.hr.hint = TALER_JSON_get_error_hint (json);
191 0 : break;
192 0 : default:
193 0 : ogr.hr.ec = TALER_JSON_get_error_code (json);
194 0 : ogr.hr.hint = TALER_JSON_get_error_hint (json);
195 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
196 : "Unexpected response code %u/%d\n",
197 : (unsigned int) response_code,
198 : (int) ogr.hr.ec);
199 0 : break;
200 : }
201 0 : gpoh->cb (gpoh->cb_cls,
202 : &ogr);
203 0 : TALER_MERCHANT_get_private_otp_devices_cancel (gpoh);
204 : }
205 :
206 :
207 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *
208 0 : TALER_MERCHANT_get_private_otp_devices_create (
209 : struct GNUNET_CURL_Context *ctx,
210 : const char *url)
211 : {
212 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *gpoh;
213 :
214 0 : gpoh = GNUNET_new (struct TALER_MERCHANT_GetPrivateOtpDevicesHandle);
215 0 : gpoh->ctx = ctx;
216 0 : gpoh->base_url = GNUNET_strdup (url);
217 0 : return gpoh;
218 : }
219 :
220 :
221 : enum TALER_ErrorCode
222 0 : TALER_MERCHANT_get_private_otp_devices_start (
223 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *gpoh,
224 : TALER_MERCHANT_GetPrivateOtpDevicesCallback cb,
225 : TALER_MERCHANT_GET_PRIVATE_OTP_DEVICES_RESULT_CLOSURE *cb_cls)
226 : {
227 : CURL *eh;
228 :
229 0 : gpoh->cb = cb;
230 0 : gpoh->cb_cls = cb_cls;
231 0 : gpoh->url = TALER_url_join (gpoh->base_url,
232 : "private/otp-devices",
233 : NULL);
234 0 : if (NULL == gpoh->url)
235 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
236 0 : eh = TALER_MERCHANT_curl_easy_get_ (gpoh->url);
237 0 : if (NULL == eh)
238 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
239 0 : gpoh->job = GNUNET_CURL_job_add (gpoh->ctx,
240 : eh,
241 : &handle_get_otp_devices_finished,
242 : gpoh);
243 0 : if (NULL == gpoh->job)
244 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
245 0 : return TALER_EC_NONE;
246 : }
247 :
248 :
249 : void
250 0 : TALER_MERCHANT_get_private_otp_devices_cancel (
251 : struct TALER_MERCHANT_GetPrivateOtpDevicesHandle *gpoh)
252 : {
253 0 : if (NULL != gpoh->job)
254 : {
255 0 : GNUNET_CURL_job_cancel (gpoh->job);
256 0 : gpoh->job = NULL;
257 : }
258 0 : GNUNET_free (gpoh->url);
259 0 : GNUNET_free (gpoh->base_url);
260 0 : GNUNET_free (gpoh);
261 0 : }
262 :
263 :
264 : /* end of merchant_api_get-private-otp-devices-new.c */
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