Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022, 2024 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it
6 : under the terms of the GNU General Public License as published by
7 : the Free Software Foundation; either version 3, or (at your
8 : 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 GNU
13 : General Public License for more details.
14 :
15 : You should have received a copy of the GNU General Public
16 : License along with TALER; see the file COPYING. If not, see
17 : <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file testing/testing_api_cmd_reserve_purse.c
21 : * @brief command for testing /reserves/$PID/purse
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include "taler/taler_json_lib.h"
26 : #include <gnunet/gnunet_curl_lib.h>
27 : #include "taler/taler_testing_lib.h"
28 : #include "taler/taler_signatures.h"
29 : #include "taler/backoff.h"
30 :
31 :
32 : /**
33 : * State for a "purse create with merge" CMD.
34 : */
35 : struct ReservePurseState
36 : {
37 :
38 : /**
39 : * Merge time (local time when the command was
40 : * executed).
41 : */
42 : struct GNUNET_TIME_Timestamp merge_timestamp;
43 :
44 : /**
45 : * Account (reserve) private key.
46 : */
47 : union TALER_AccountPrivateKeyP account_priv;
48 :
49 : /**
50 : * Account (reserve) public key.
51 : */
52 : union TALER_AccountPublicKeyP account_pub;
53 :
54 : /**
55 : * Reserve signature generated for the request
56 : * (client-side).
57 : */
58 : struct TALER_ReserveSignatureP reserve_sig;
59 :
60 : /**
61 : * Private key of the purse.
62 : */
63 : struct TALER_PurseContractPrivateKeyP purse_priv;
64 :
65 : /**
66 : * Public key of the purse.
67 : */
68 : struct TALER_PurseContractPublicKeyP purse_pub;
69 :
70 : /**
71 : * Private key with the merge capability.
72 : */
73 : struct TALER_PurseMergePrivateKeyP merge_priv;
74 :
75 : /**
76 : * Public key of the merge capability.
77 : */
78 : struct TALER_PurseMergePublicKeyP merge_pub;
79 :
80 : /**
81 : * Private key to decrypt the contract.
82 : */
83 : struct TALER_ContractDiffiePrivateP contract_priv;
84 :
85 : /**
86 : * Handle while operation is running.
87 : */
88 : struct TALER_EXCHANGE_PostReservesPurseHandle *dh;
89 :
90 : /**
91 : * When will the purse expire?
92 : */
93 : struct GNUNET_TIME_Relative expiration_rel;
94 :
95 : /**
96 : * When will the purse expire?
97 : */
98 : struct GNUNET_TIME_Timestamp purse_expiration;
99 :
100 : /**
101 : * Hash of the payto://-URI for the reserve we are
102 : * merging into.
103 : */
104 : struct TALER_NormalizedPaytoHashP h_payto;
105 :
106 : /**
107 : * Set to the KYC requirement row *if* the exchange replied with
108 : * a request for KYC.
109 : */
110 : uint64_t requirement_row;
111 :
112 : /**
113 : * Contract terms for the purse.
114 : */
115 : json_t *contract_terms;
116 :
117 : /**
118 : * Reference to the reserve, or NULL (!).
119 : */
120 : const char *reserve_ref;
121 :
122 : /**
123 : * Interpreter state.
124 : */
125 : struct TALER_TESTING_Interpreter *is;
126 :
127 : /**
128 : * Expected HTTP response code.
129 : */
130 : unsigned int expected_response_code;
131 :
132 : /**
133 : * True to pay the purse fee.
134 : */
135 : bool pay_purse_fee;
136 : };
137 :
138 :
139 : /**
140 : * Callback to analyze the /reserves/$PID/purse response, just used to check if
141 : * the response code is acceptable.
142 : *
143 : * @param cls closure.
144 : * @param dr purse response details
145 : */
146 : static void
147 14 : purse_cb (void *cls,
148 : const struct TALER_EXCHANGE_PostReservesPurseResponse *dr)
149 : {
150 14 : struct ReservePurseState *ds = cls;
151 :
152 14 : ds->dh = NULL;
153 14 : ds->reserve_sig = *dr->reserve_sig;
154 14 : if (ds->expected_response_code != dr->hr.http_status)
155 : {
156 0 : TALER_TESTING_unexpected_status (ds->is,
157 : dr->hr.http_status,
158 : ds->expected_response_code);
159 0 : return;
160 : }
161 14 : switch (dr->hr.http_status)
162 : {
163 1 : case MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS:
164 : /* KYC required */
165 1 : ds->requirement_row =
166 1 : dr->details.unavailable_for_legal_reasons.requirement_row;
167 1 : GNUNET_break (0 ==
168 : GNUNET_memcmp (
169 : &ds->h_payto,
170 : &dr->details.unavailable_for_legal_reasons.h_payto));
171 1 : break;
172 : }
173 14 : TALER_TESTING_interpreter_next (ds->is);
174 : }
175 :
176 :
177 : /**
178 : * Run the command.
179 : *
180 : * @param cls closure.
181 : * @param cmd the command to execute.
182 : * @param is the interpreter state.
183 : */
184 : static void
185 14 : purse_run (void *cls,
186 : const struct TALER_TESTING_Command *cmd,
187 : struct TALER_TESTING_Interpreter *is)
188 : {
189 14 : struct ReservePurseState *ds = cls;
190 : const struct TALER_ReservePrivateKeyP *reserve_priv;
191 : const struct TALER_TESTING_Command *ref;
192 :
193 : (void) cmd;
194 14 : ds->is = is;
195 14 : ref = TALER_TESTING_interpreter_lookup_command (ds->is,
196 : ds->reserve_ref);
197 14 : GNUNET_assert (NULL != ref);
198 14 : if (GNUNET_OK !=
199 14 : TALER_TESTING_get_trait_reserve_priv (ref,
200 : &reserve_priv))
201 : {
202 0 : GNUNET_break (0);
203 0 : TALER_TESTING_interpreter_fail (ds->is);
204 0 : return;
205 : }
206 14 : ds->account_priv.reserve_priv = *reserve_priv;
207 14 : GNUNET_CRYPTO_eddsa_key_create (
208 : &ds->purse_priv.eddsa_priv);
209 14 : GNUNET_CRYPTO_eddsa_key_get_public (
210 14 : &ds->purse_priv.eddsa_priv,
211 : &ds->purse_pub.eddsa_pub);
212 14 : GNUNET_CRYPTO_eddsa_key_get_public (
213 14 : &ds->account_priv.reserve_priv.eddsa_priv,
214 : &ds->account_pub.reserve_pub.eddsa_pub);
215 14 : GNUNET_CRYPTO_eddsa_key_create (
216 : &ds->merge_priv.eddsa_priv);
217 14 : GNUNET_CRYPTO_eddsa_key_get_public (
218 14 : &ds->merge_priv.eddsa_priv,
219 : &ds->merge_pub.eddsa_pub);
220 14 : GNUNET_CRYPTO_ecdhe_key_create (
221 : &ds->contract_priv.ecdhe_priv);
222 : ds->purse_expiration
223 14 : = GNUNET_TIME_absolute_to_timestamp (
224 : GNUNET_TIME_relative_to_absolute (
225 : ds->expiration_rel));
226 :
227 : {
228 : struct TALER_NormalizedPayto payto_uri;
229 : const char *exchange_url;
230 : const struct TALER_TESTING_Command *exchange_cmd;
231 :
232 14 : exchange_cmd = TALER_TESTING_interpreter_get_command (is,
233 : "exchange");
234 14 : if (NULL == exchange_cmd)
235 : {
236 0 : GNUNET_break (0);
237 0 : TALER_TESTING_interpreter_fail (is);
238 0 : return;
239 : }
240 14 : GNUNET_assert (
241 : GNUNET_OK ==
242 : TALER_TESTING_get_trait_exchange_url (
243 : exchange_cmd,
244 : &exchange_url));
245 : payto_uri
246 14 : = TALER_reserve_make_payto (
247 : exchange_url,
248 14 : &ds->account_pub.reserve_pub);
249 14 : TALER_normalized_payto_hash (payto_uri,
250 : &ds->h_payto);
251 14 : GNUNET_free (payto_uri.normalized_payto);
252 : }
253 :
254 14 : GNUNET_assert (0 ==
255 : json_object_set_new (
256 : ds->contract_terms,
257 : "pay_deadline",
258 : GNUNET_JSON_from_timestamp (ds->purse_expiration)));
259 14 : ds->merge_timestamp = GNUNET_TIME_timestamp_get ();
260 14 : ds->dh = TALER_EXCHANGE_post_reserves_purse_create (
261 : TALER_TESTING_interpreter_get_context (is),
262 : TALER_TESTING_get_exchange_url (is),
263 : TALER_TESTING_get_keys (is),
264 14 : &ds->account_priv.reserve_priv,
265 14 : &ds->purse_priv,
266 14 : &ds->merge_priv,
267 14 : &ds->contract_priv,
268 14 : ds->contract_terms,
269 14 : ds->pay_purse_fee,
270 : ds->merge_timestamp);
271 14 : if (NULL == ds->dh)
272 : {
273 0 : GNUNET_break (0);
274 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
275 : "Could not purse reserve\n");
276 0 : TALER_TESTING_interpreter_fail (is);
277 0 : return;
278 : }
279 14 : GNUNET_assert (GNUNET_OK ==
280 : TALER_EXCHANGE_post_reserves_purse_set_options (
281 : ds->dh,
282 : TALER_EXCHANGE_post_reserves_purse_option_upload_contract ())
283 : );
284 14 : GNUNET_assert (TALER_EC_NONE ==
285 : TALER_EXCHANGE_post_reserves_purse_start (ds->dh,
286 : &purse_cb,
287 : ds));
288 : }
289 :
290 :
291 : /**
292 : * Free the state of a "purse" CMD, and possibly cancel a
293 : * pending operation thereof.
294 : *
295 : * @param cls closure, must be a `struct ReservePurseState`.
296 : * @param cmd the command which is being cleaned up.
297 : */
298 : static void
299 14 : purse_cleanup (void *cls,
300 : const struct TALER_TESTING_Command *cmd)
301 : {
302 14 : struct ReservePurseState *ds = cls;
303 :
304 14 : if (NULL != ds->dh)
305 : {
306 0 : TALER_TESTING_command_incomplete (ds->is,
307 : cmd->label);
308 0 : TALER_EXCHANGE_post_reserves_purse_cancel (ds->dh);
309 0 : ds->dh = NULL;
310 : }
311 14 : json_decref (ds->contract_terms);
312 14 : GNUNET_free (ds);
313 14 : }
314 :
315 :
316 : /**
317 : * Offer internal data from a "purse" CMD, to other commands.
318 : *
319 : * @param cls closure.
320 : * @param[out] ret result.
321 : * @param trait name of the trait.
322 : * @param index index number of the object to offer.
323 : * @return #GNUNET_OK on success.
324 : */
325 : static enum GNUNET_GenericReturnValue
326 51 : purse_traits (void *cls,
327 : const void **ret,
328 : const char *trait,
329 : unsigned int index)
330 : {
331 51 : struct ReservePurseState *ds = cls;
332 : struct TALER_TESTING_Trait traits[] = {
333 51 : TALER_TESTING_make_trait_timestamp (
334 : 0,
335 51 : &ds->merge_timestamp),
336 51 : TALER_TESTING_make_trait_contract_terms (
337 51 : ds->contract_terms),
338 51 : TALER_TESTING_make_trait_purse_priv (
339 51 : &ds->purse_priv),
340 51 : TALER_TESTING_make_trait_purse_pub (
341 51 : &ds->purse_pub),
342 51 : TALER_TESTING_make_trait_merge_priv (
343 51 : &ds->merge_priv),
344 51 : TALER_TESTING_make_trait_merge_pub (
345 51 : &ds->merge_pub),
346 51 : TALER_TESTING_make_trait_contract_priv (
347 51 : &ds->contract_priv),
348 51 : TALER_TESTING_make_trait_account_priv (
349 51 : &ds->account_priv),
350 51 : TALER_TESTING_make_trait_account_pub (
351 51 : &ds->account_pub),
352 51 : TALER_TESTING_make_trait_reserve_priv (
353 51 : &ds->account_priv.reserve_priv),
354 51 : TALER_TESTING_make_trait_reserve_pub (
355 51 : &ds->account_pub.reserve_pub),
356 51 : TALER_TESTING_make_trait_reserve_sig (
357 51 : &ds->reserve_sig),
358 51 : TALER_TESTING_make_trait_legi_requirement_row (
359 51 : &ds->requirement_row),
360 51 : TALER_TESTING_make_trait_h_normalized_payto (
361 51 : &ds->h_payto),
362 51 : TALER_TESTING_trait_end ()
363 : };
364 :
365 51 : return TALER_TESTING_get_trait (traits,
366 : ret,
367 : trait,
368 : index);
369 : }
370 :
371 :
372 : struct TALER_TESTING_Command
373 14 : TALER_TESTING_cmd_purse_create_with_reserve (
374 : const char *label,
375 : unsigned int expected_http_status,
376 : const char *contract_terms,
377 : bool upload_contract,
378 : bool pay_purse_fee,
379 : struct GNUNET_TIME_Relative expiration,
380 : const char *reserve_ref)
381 : {
382 : struct ReservePurseState *ds;
383 : json_error_t err;
384 :
385 14 : ds = GNUNET_new (struct ReservePurseState);
386 14 : ds->expiration_rel = expiration;
387 14 : ds->contract_terms = json_loads (contract_terms,
388 : 0 /* flags */,
389 : &err);
390 14 : GNUNET_assert (NULL != ds->contract_terms);
391 14 : ds->pay_purse_fee = pay_purse_fee;
392 14 : ds->reserve_ref = reserve_ref;
393 14 : ds->expected_response_code = expected_http_status;
394 :
395 : {
396 14 : struct TALER_TESTING_Command cmd = {
397 : .cls = ds,
398 : .label = label,
399 : .run = &purse_run,
400 : .cleanup = &purse_cleanup,
401 : .traits = &purse_traits
402 : };
403 :
404 14 : return cmd;
405 : }
406 : }
407 :
408 :
409 : /* end of testing_api_cmd_reserve_purse.c */
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