Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2023-2026 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-accounts.c
21 : * @brief Implementation of the POST /private/accounts 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-accounts.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/accounts operation.
39 : */
40 : struct TALER_MERCHANT_PostPrivateAccountsHandle
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_PostPrivateAccountsCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_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 : * Payto URI to add.
79 : */
80 : struct TALER_FullPayto payto_uri;
81 :
82 : /**
83 : * Optional credit facade URL.
84 : */
85 : char *credit_facade_url;
86 :
87 : /**
88 : * Optional credit facade credentials (JSON).
89 : */
90 : json_t *credit_facade_credentials;
91 :
92 : /**
93 : * Optional extra wire subject metadata (JSON).
94 : */
95 : char *extra_wire_subject_metadata;
96 : };
97 :
98 :
99 : /**
100 : * Function called when we're done processing the
101 : * HTTP POST /private/accounts request.
102 : *
103 : * @param cls the `struct TALER_MERCHANT_PostPrivateAccountsHandle`
104 : * @param response_code HTTP response code, 0 on error
105 : * @param response response body, NULL if not in JSON
106 : */
107 : static void
108 0 : handle_post_account_finished (void *cls,
109 : long response_code,
110 : const void *response)
111 : {
112 0 : struct TALER_MERCHANT_PostPrivateAccountsHandle *pah = cls;
113 0 : const json_t *json = response;
114 0 : struct TALER_MERCHANT_PostPrivateAccountsResponse apr = {
115 0 : .hr.http_status = (unsigned int) response_code,
116 : .hr.reply = json
117 : };
118 :
119 0 : pah->job = NULL;
120 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
121 : "POST /private/accounts completed with response code %u\n",
122 : (unsigned int) response_code);
123 0 : switch (response_code)
124 : {
125 0 : case 0:
126 0 : apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
127 0 : break;
128 0 : case MHD_HTTP_OK:
129 : {
130 : struct GNUNET_JSON_Specification spec[] = {
131 0 : GNUNET_JSON_spec_fixed_auto ("h_wire",
132 : &apr.details.ok.h_wire),
133 0 : GNUNET_JSON_spec_fixed_auto ("salt",
134 : &apr.details.ok.salt),
135 0 : GNUNET_JSON_spec_end ()
136 : };
137 :
138 0 : if (GNUNET_OK !=
139 0 : GNUNET_JSON_parse (json,
140 : spec,
141 : NULL, NULL))
142 : {
143 0 : GNUNET_break_op (0);
144 0 : apr.hr.http_status = 0;
145 0 : apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
146 0 : break;
147 : }
148 : }
149 0 : break;
150 0 : case MHD_HTTP_ACCEPTED:
151 0 : if (GNUNET_OK !=
152 0 : TALER_MERCHANT_parse_mfa_challenge_response_ (
153 : json,
154 : &apr.details.accepted))
155 : {
156 0 : GNUNET_break_op (0);
157 0 : apr.hr.http_status = 0;
158 0 : apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
159 : }
160 0 : break;
161 0 : case MHD_HTTP_BAD_REQUEST:
162 0 : GNUNET_break_op (0);
163 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
164 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
165 0 : break;
166 0 : case MHD_HTTP_FORBIDDEN:
167 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
168 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
169 0 : break;
170 0 : case MHD_HTTP_NOT_FOUND:
171 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
172 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
173 0 : break;
174 0 : case MHD_HTTP_CONFLICT:
175 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
176 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
177 0 : break;
178 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
179 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
180 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
181 0 : break;
182 0 : default:
183 0 : TALER_MERCHANT_parse_error_details_ (json,
184 : response_code,
185 : &apr.hr);
186 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
187 : "Unexpected response code %u/%d\n",
188 : (unsigned int) response_code,
189 : (int) apr.hr.ec);
190 0 : GNUNET_break_op (0);
191 0 : break;
192 : }
193 0 : pah->cb (pah->cb_cls,
194 : &apr);
195 0 : if (MHD_HTTP_ACCEPTED == response_code)
196 0 : TALER_MERCHANT_mfa_challenge_response_free (
197 : &apr.details.accepted);
198 0 : TALER_MERCHANT_post_private_accounts_cancel (pah);
199 0 : }
200 :
201 :
202 : struct TALER_MERCHANT_PostPrivateAccountsHandle *
203 0 : TALER_MERCHANT_post_private_accounts_create (
204 : struct GNUNET_CURL_Context *ctx,
205 : const char *url,
206 : struct TALER_FullPayto payto_uri)
207 : {
208 : struct TALER_MERCHANT_PostPrivateAccountsHandle *pah;
209 :
210 0 : pah = GNUNET_new (struct TALER_MERCHANT_PostPrivateAccountsHandle);
211 0 : pah->ctx = ctx;
212 0 : pah->base_url = GNUNET_strdup (url);
213 0 : pah->payto_uri.full_payto = GNUNET_strdup (payto_uri.full_payto);
214 0 : return pah;
215 : }
216 :
217 :
218 : enum GNUNET_GenericReturnValue
219 0 : TALER_MERCHANT_post_private_accounts_set_options_ (
220 : struct TALER_MERCHANT_PostPrivateAccountsHandle *pah,
221 : unsigned int num_options,
222 : const struct TALER_MERCHANT_PostPrivateAccountsOptionValue *options)
223 : {
224 0 : for (unsigned int i = 0; i < num_options; i++)
225 : {
226 0 : switch (options[i].option)
227 : {
228 0 : case TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_OPTION_END:
229 0 : return GNUNET_OK;
230 0 : case TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_OPTION_CREDIT_FACADE_URL:
231 0 : GNUNET_free (pah->credit_facade_url);
232 0 : pah->credit_facade_url = GNUNET_strdup (options[i].details.credit_facade_url);
233 0 : break;
234 0 : case TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_OPTION_CREDIT_FACADE_CREDENTIALS:
235 0 : json_decref (pah->credit_facade_credentials);
236 : pah->credit_facade_credentials
237 0 : = json_incref ((json_t *) options[i].details.credit_facade_credentials);
238 0 : break;
239 0 : case TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_OPTION_EXTRA_WIRE_SUBJECT_METADATA:
240 0 : GNUNET_free (pah->extra_wire_subject_metadata);
241 : pah->extra_wire_subject_metadata
242 0 : = GNUNET_strdup (options[i].details.extra_wire_subject_metadata);
243 0 : break;
244 0 : default:
245 0 : GNUNET_break (0);
246 0 : return GNUNET_SYSERR;
247 : }
248 : }
249 0 : return GNUNET_OK;
250 : }
251 :
252 :
253 : enum TALER_ErrorCode
254 0 : TALER_MERCHANT_post_private_accounts_start (
255 : struct TALER_MERCHANT_PostPrivateAccountsHandle *pah,
256 : TALER_MERCHANT_PostPrivateAccountsCallback cb,
257 : TALER_MERCHANT_POST_PRIVATE_ACCOUNTS_RESULT_CLOSURE *cb_cls)
258 : {
259 : json_t *req_obj;
260 : CURL *eh;
261 :
262 0 : pah->cb = cb;
263 0 : pah->cb_cls = cb_cls;
264 0 : pah->url = TALER_url_join (pah->base_url,
265 : "private/accounts",
266 : NULL);
267 0 : if (NULL == pah->url)
268 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
269 0 : req_obj = GNUNET_JSON_PACK (
270 : TALER_JSON_pack_full_payto (
271 : "payto_uri",
272 : pah->payto_uri),
273 : GNUNET_JSON_pack_allow_null (
274 : GNUNET_JSON_pack_string (
275 : "credit_facade_url",
276 : pah->credit_facade_url)),
277 : GNUNET_JSON_pack_allow_null (
278 : GNUNET_JSON_pack_object_incref (
279 : "credit_facade_credentials",
280 : pah->credit_facade_credentials)),
281 : GNUNET_JSON_pack_allow_null (
282 : GNUNET_JSON_pack_string (
283 : "extra_wire_subject_metadata",
284 : pah->extra_wire_subject_metadata)));
285 0 : eh = TALER_MERCHANT_curl_easy_get_ (pah->url);
286 0 : if ( (NULL == eh) ||
287 : (GNUNET_OK !=
288 0 : TALER_curl_easy_post (&pah->post_ctx,
289 : eh,
290 : req_obj)) )
291 : {
292 0 : GNUNET_break (0);
293 0 : json_decref (req_obj);
294 0 : if (NULL != eh)
295 0 : curl_easy_cleanup (eh);
296 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
297 : }
298 0 : json_decref (req_obj);
299 0 : pah->job = GNUNET_CURL_job_add2 (pah->ctx,
300 : eh,
301 0 : pah->post_ctx.headers,
302 : &handle_post_account_finished,
303 : pah);
304 0 : if (NULL == pah->job)
305 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
306 0 : return TALER_EC_NONE;
307 : }
308 :
309 :
310 : void
311 0 : TALER_MERCHANT_post_private_accounts_cancel (
312 : struct TALER_MERCHANT_PostPrivateAccountsHandle *pah)
313 : {
314 0 : if (NULL != pah->job)
315 : {
316 0 : GNUNET_CURL_job_cancel (pah->job);
317 0 : pah->job = NULL;
318 : }
319 0 : TALER_curl_easy_post_finished (&pah->post_ctx);
320 0 : GNUNET_free (pah->payto_uri.full_payto);
321 0 : GNUNET_free (pah->url);
322 0 : GNUNET_free (pah->credit_facade_url);
323 0 : json_decref (pah->credit_facade_credentials);
324 0 : GNUNET_free (pah->extra_wire_subject_metadata);
325 0 : GNUNET_free (pah->base_url);
326 0 : GNUNET_free (pah);
327 0 : }
328 :
329 :
330 : /* end of merchant_api_post-private-accounts.c */
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