Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2024 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, 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 General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file lib/exchange_api_batch_deposit.c
19 : * @brief Implementation of the /batch-deposit request of the exchange's HTTP API
20 : * @author Sree Harsha Totakura <sreeharsha@totakura.in>
21 : * @author Christian Grothoff
22 : */
23 : #include "taler/platform.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_json_lib.h>
28 : #include <gnunet/gnunet_curl_lib.h>
29 : #include "taler/taler_json_lib.h"
30 : #include "taler/taler_auditor_service.h"
31 : #include "taler/taler_exchange_service.h"
32 : #include "exchange_api_common.h"
33 : #include "exchange_api_handle.h"
34 : #include "taler/taler_signatures.h"
35 : #include "exchange_api_curl_defaults.h"
36 :
37 :
38 : /**
39 : * 1:#AUDITOR_CHANCE is the probability that we report deposits
40 : * to the auditor.
41 : *
42 : * 20==5% of going to auditor. This is possibly still too high, but set
43 : * deliberately this high for testing
44 : */
45 : #define AUDITOR_CHANCE 20
46 :
47 :
48 : /**
49 : * Entry in list of ongoing interactions with an auditor.
50 : */
51 : struct TEAH_AuditorInteractionEntry
52 : {
53 : /**
54 : * DLL entry.
55 : */
56 : struct TEAH_AuditorInteractionEntry *next;
57 :
58 : /**
59 : * DLL entry.
60 : */
61 : struct TEAH_AuditorInteractionEntry *prev;
62 :
63 : /**
64 : * URL of our auditor. For logging.
65 : */
66 : const char *auditor_url;
67 :
68 : /**
69 : * Interaction state.
70 : */
71 : struct TALER_AUDITOR_DepositConfirmationHandle *dch;
72 :
73 : /**
74 : * Batch deposit this is for.
75 : */
76 : struct TALER_EXCHANGE_BatchDepositHandle *dh;
77 : };
78 :
79 :
80 : /**
81 : * @brief A Deposit Handle
82 : */
83 : struct TALER_EXCHANGE_BatchDepositHandle
84 : {
85 :
86 : /**
87 : * The keys of the exchange.
88 : */
89 : struct TALER_EXCHANGE_Keys *keys;
90 :
91 : /**
92 : * Context for our curl request(s).
93 : */
94 : struct GNUNET_CURL_Context *ctx;
95 :
96 : /**
97 : * The url for this request.
98 : */
99 : char *url;
100 :
101 : /**
102 : * Context for #TEH_curl_easy_post(). Keeps the data that must
103 : * persist for Curl to make the upload.
104 : */
105 : struct TALER_CURL_PostContext post_ctx;
106 :
107 : /**
108 : * Handle for the request.
109 : */
110 : struct GNUNET_CURL_Job *job;
111 :
112 : /**
113 : * Function to call with the result.
114 : */
115 : TALER_EXCHANGE_BatchDepositResultCallback cb;
116 :
117 : /**
118 : * Closure for @a cb.
119 : */
120 : void *cb_cls;
121 :
122 : /**
123 : * Details about the contract.
124 : */
125 : struct TALER_EXCHANGE_DepositContractDetail dcd;
126 :
127 : /**
128 : * Array with details about the coins.
129 : */
130 : struct TALER_EXCHANGE_CoinDepositDetail *cdds;
131 :
132 : /**
133 : * Hash of the merchant's wire details.
134 : */
135 : struct TALER_MerchantWireHashP h_wire;
136 :
137 : /**
138 : * Hash over the extensions, or all zero.
139 : */
140 : struct TALER_ExtensionPolicyHashP h_policy;
141 :
142 : /**
143 : * Time when this confirmation was generated / when the exchange received
144 : * the deposit request.
145 : */
146 : struct GNUNET_TIME_Timestamp exchange_timestamp;
147 :
148 : /**
149 : * Exchange signature, set for #auditor_cb.
150 : */
151 : struct TALER_ExchangeSignatureP exchange_sig;
152 :
153 : /**
154 : * Head of DLL of interactions with this auditor.
155 : */
156 : struct TEAH_AuditorInteractionEntry *ai_head;
157 :
158 : /**
159 : * Tail of DLL of interactions with this auditor.
160 : */
161 : struct TEAH_AuditorInteractionEntry *ai_tail;
162 :
163 : /**
164 : * Result to return to the application once @e ai_head is empty.
165 : */
166 : struct TALER_EXCHANGE_BatchDepositResult dr;
167 :
168 : /**
169 : * Exchange signing public key, set for #auditor_cb.
170 : */
171 : struct TALER_ExchangePublicKeyP exchange_pub;
172 :
173 : /**
174 : * Total amount deposited without fees as calculated by us.
175 : */
176 : struct TALER_Amount total_without_fee;
177 :
178 : /**
179 : * Response object to free at the end.
180 : */
181 : json_t *response;
182 :
183 : /**
184 : * Chance that we will inform the auditor about the deposit
185 : * is 1:n, where the value of this field is "n".
186 : */
187 : unsigned int auditor_chance;
188 :
189 : /**
190 : * Length of the @e cdds array.
191 : */
192 : unsigned int num_cdds;
193 :
194 : };
195 :
196 :
197 : /**
198 : * Finish batch deposit operation by calling the callback.
199 : *
200 : * @param[in] dh handle to finished batch deposit operation
201 : */
202 : static void
203 104 : finish_dh (struct TALER_EXCHANGE_BatchDepositHandle *dh)
204 : {
205 104 : dh->cb (dh->cb_cls,
206 104 : &dh->dr);
207 104 : TALER_EXCHANGE_batch_deposit_cancel (dh);
208 104 : }
209 :
210 :
211 : /**
212 : * Function called with the result from our call to the
213 : * auditor's /deposit-confirmation handler.
214 : *
215 : * @param cls closure of type `struct TEAH_AuditorInteractionEntry *`
216 : * @param dcr response
217 : */
218 : static void
219 8 : acc_confirmation_cb (
220 : void *cls,
221 : const struct TALER_AUDITOR_DepositConfirmationResponse *dcr)
222 : {
223 8 : struct TEAH_AuditorInteractionEntry *aie = cls;
224 8 : struct TALER_EXCHANGE_BatchDepositHandle *dh = aie->dh;
225 :
226 8 : if (MHD_HTTP_OK != dcr->hr.http_status)
227 : {
228 0 : GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
229 : "Failed to submit deposit confirmation to auditor `%s' with HTTP status %d (EC: %d). This is acceptable if it does not happen often.\n",
230 : aie->auditor_url,
231 : dcr->hr.http_status,
232 : dcr->hr.ec);
233 : }
234 8 : GNUNET_CONTAINER_DLL_remove (dh->ai_head,
235 : dh->ai_tail,
236 : aie);
237 8 : GNUNET_free (aie);
238 8 : if (NULL == dh->ai_head)
239 8 : finish_dh (dh);
240 8 : }
241 :
242 :
243 : /**
244 : * Function called for each auditor to give us a chance to possibly
245 : * launch a deposit confirmation interaction.
246 : *
247 : * @param cls closure
248 : * @param auditor_url base URL of the auditor
249 : * @param auditor_pub public key of the auditor
250 : */
251 : static void
252 38 : auditor_cb (void *cls,
253 : const char *auditor_url,
254 : const struct TALER_AuditorPublicKeyP *auditor_pub)
255 38 : {
256 38 : struct TALER_EXCHANGE_BatchDepositHandle *dh = cls;
257 : const struct TALER_EXCHANGE_SigningPublicKey *spk;
258 : struct TEAH_AuditorInteractionEntry *aie;
259 38 : const struct TALER_CoinSpendSignatureP *csigs[GNUNET_NZL (
260 : dh->num_cdds)];
261 38 : const struct TALER_CoinSpendPublicKeyP *cpubs[GNUNET_NZL (
262 : dh->num_cdds)];
263 :
264 76 : for (unsigned int i = 0; i<dh->num_cdds; i++)
265 : {
266 38 : const struct TALER_EXCHANGE_CoinDepositDetail *cdd = &dh->cdds[i];
267 :
268 38 : csigs[i] = &cdd->coin_sig;
269 38 : cpubs[i] = &cdd->coin_pub;
270 : }
271 :
272 38 : if (0 !=
273 38 : GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
274 : dh->auditor_chance))
275 : {
276 30 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
277 : "Not providing deposit confirmation to auditor\n");
278 30 : return;
279 : }
280 8 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
281 : "Will provide deposit confirmation to auditor `%s'\n",
282 : TALER_B2S (auditor_pub));
283 8 : spk = TALER_EXCHANGE_get_signing_key_info (dh->keys,
284 8 : &dh->exchange_pub);
285 8 : if (NULL == spk)
286 : {
287 0 : GNUNET_break_op (0);
288 0 : return;
289 : }
290 8 : aie = GNUNET_new (struct TEAH_AuditorInteractionEntry);
291 8 : aie->dh = dh;
292 8 : aie->auditor_url = auditor_url;
293 16 : aie->dch = TALER_AUDITOR_deposit_confirmation (
294 : dh->ctx,
295 : auditor_url,
296 8 : &dh->h_wire,
297 8 : &dh->h_policy,
298 8 : &dh->dcd.h_contract_terms,
299 : dh->exchange_timestamp,
300 : dh->dcd.wire_deadline,
301 : dh->dcd.refund_deadline,
302 8 : &dh->total_without_fee,
303 : dh->num_cdds,
304 : cpubs,
305 : csigs,
306 8 : &dh->dcd.merchant_pub,
307 8 : &dh->exchange_pub,
308 8 : &dh->exchange_sig,
309 8 : &dh->keys->master_pub,
310 : spk->valid_from,
311 : spk->valid_until,
312 : spk->valid_legal,
313 : &spk->master_sig,
314 : &acc_confirmation_cb,
315 : aie);
316 8 : GNUNET_CONTAINER_DLL_insert (dh->ai_head,
317 : dh->ai_tail,
318 : aie);
319 : }
320 :
321 :
322 : /**
323 : * Function called when we're done processing the
324 : * HTTP /deposit request.
325 : *
326 : * @param cls the `struct TALER_EXCHANGE_BatchDepositHandle`
327 : * @param response_code HTTP response code, 0 on error
328 : * @param response parsed JSON result, NULL on error
329 : */
330 : static void
331 104 : handle_deposit_finished (void *cls,
332 : long response_code,
333 : const void *response)
334 : {
335 104 : struct TALER_EXCHANGE_BatchDepositHandle *dh = cls;
336 104 : const json_t *j = response;
337 104 : struct TALER_EXCHANGE_BatchDepositResult *dr = &dh->dr;
338 :
339 104 : dh->job = NULL;
340 104 : dh->response = json_incref ((json_t*) j);
341 104 : dr->hr.reply = dh->response;
342 104 : dr->hr.http_status = (unsigned int) response_code;
343 104 : switch (response_code)
344 : {
345 0 : case 0:
346 0 : dr->hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
347 0 : break;
348 90 : case MHD_HTTP_OK:
349 : {
350 : struct GNUNET_JSON_Specification spec[] = {
351 90 : GNUNET_JSON_spec_fixed_auto ("exchange_sig",
352 : &dh->exchange_sig),
353 90 : GNUNET_JSON_spec_fixed_auto ("exchange_pub",
354 : &dh->exchange_pub),
355 90 : GNUNET_JSON_spec_mark_optional (
356 : TALER_JSON_spec_web_url ("transaction_base_url",
357 : &dr->details.ok.transaction_base_url),
358 : NULL),
359 90 : GNUNET_JSON_spec_timestamp ("exchange_timestamp",
360 : &dh->exchange_timestamp),
361 90 : GNUNET_JSON_spec_end ()
362 : };
363 :
364 90 : if (GNUNET_OK !=
365 90 : GNUNET_JSON_parse (j,
366 : spec,
367 : NULL, NULL))
368 : {
369 0 : GNUNET_break_op (0);
370 0 : dr->hr.http_status = 0;
371 0 : dr->hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
372 0 : break;
373 : }
374 90 : if (GNUNET_OK !=
375 90 : TALER_EXCHANGE_test_signing_key (dh->keys,
376 90 : &dh->exchange_pub))
377 : {
378 0 : GNUNET_break_op (0);
379 0 : dr->hr.http_status = 0;
380 0 : dr->hr.ec = TALER_EC_EXCHANGE_DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE;
381 0 : break;
382 : }
383 90 : {
384 90 : const struct TALER_CoinSpendSignatureP *csigs[
385 90 : GNUNET_NZL (dh->num_cdds)];
386 :
387 182 : for (unsigned int i = 0; i<dh->num_cdds; i++)
388 92 : csigs[i] = &dh->cdds[i].coin_sig;
389 90 : if (GNUNET_OK !=
390 90 : TALER_exchange_online_deposit_confirmation_verify (
391 90 : &dh->dcd.h_contract_terms,
392 90 : &dh->h_wire,
393 90 : &dh->h_policy,
394 : dh->exchange_timestamp,
395 : dh->dcd.wire_deadline,
396 : dh->dcd.refund_deadline,
397 90 : &dh->total_without_fee,
398 : dh->num_cdds,
399 : csigs,
400 90 : &dh->dcd.merchant_pub,
401 90 : &dh->exchange_pub,
402 90 : &dh->exchange_sig))
403 : {
404 0 : GNUNET_break_op (0);
405 0 : dr->hr.http_status = 0;
406 0 : dr->hr.ec = TALER_EC_EXCHANGE_DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE;
407 0 : break;
408 : }
409 : }
410 90 : TEAH_get_auditors_for_dc (dh->keys,
411 : &auditor_cb,
412 : dh);
413 : }
414 90 : dr->details.ok.exchange_sig = &dh->exchange_sig;
415 90 : dr->details.ok.exchange_pub = &dh->exchange_pub;
416 90 : dr->details.ok.deposit_timestamp = dh->exchange_timestamp;
417 90 : break;
418 0 : case MHD_HTTP_BAD_REQUEST:
419 : /* This should never happen, either us or the exchange is buggy
420 : (or API version conflict); just pass JSON reply to the application */
421 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
422 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
423 0 : break;
424 0 : case MHD_HTTP_FORBIDDEN:
425 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
426 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
427 : /* Nothing really to verify, exchange says one of the signatures is
428 : invalid; as we checked them, this should never happen, we
429 : should pass the JSON reply to the application */
430 0 : break;
431 0 : case MHD_HTTP_NOT_FOUND:
432 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
433 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
434 : /* Nothing really to verify, this should never
435 : happen, we should pass the JSON reply to the application */
436 0 : break;
437 9 : case MHD_HTTP_CONFLICT:
438 : {
439 9 : dr->hr.ec = TALER_JSON_get_error_code (j);
440 9 : dr->hr.hint = TALER_JSON_get_error_hint (j);
441 9 : switch (dr->hr.ec)
442 : {
443 4 : case TALER_EC_EXCHANGE_GENERIC_INSUFFICIENT_FUNDS:
444 : {
445 : struct GNUNET_JSON_Specification spec[] = {
446 4 : GNUNET_JSON_spec_fixed_auto (
447 : "coin_pub",
448 : &dr->details.conflict.details
449 : .insufficient_funds.coin_pub),
450 4 : GNUNET_JSON_spec_end ()
451 : };
452 :
453 4 : if (GNUNET_OK !=
454 4 : GNUNET_JSON_parse (j,
455 : spec,
456 : NULL, NULL))
457 : {
458 0 : GNUNET_break_op (0);
459 0 : dr->hr.http_status = 0;
460 0 : dr->hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
461 0 : break;
462 : }
463 : }
464 4 : break;
465 0 : case TALER_EC_EXCHANGE_GENERIC_COIN_CONFLICTING_AGE_HASH:
466 : {
467 : struct GNUNET_JSON_Specification spec[] = {
468 0 : GNUNET_JSON_spec_fixed_auto (
469 : "coin_pub",
470 : &dr->details.conflict.details
471 : .coin_conflicting_age_hash.coin_pub),
472 0 : GNUNET_JSON_spec_end ()
473 : };
474 :
475 0 : if (GNUNET_OK !=
476 0 : GNUNET_JSON_parse (j,
477 : spec,
478 : NULL, NULL))
479 : {
480 0 : GNUNET_break_op (0);
481 0 : dr->hr.http_status = 0;
482 0 : dr->hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
483 0 : break;
484 : }
485 : }
486 0 : break;
487 1 : case TALER_EC_EXCHANGE_GENERIC_COIN_CONFLICTING_DENOMINATION_KEY:
488 : {
489 : struct GNUNET_JSON_Specification spec[] = {
490 1 : GNUNET_JSON_spec_fixed_auto (
491 : "coin_pub",
492 : &dr->details.conflict.details
493 : .coin_conflicting_denomination_key.coin_pub),
494 1 : GNUNET_JSON_spec_end ()
495 : };
496 :
497 1 : if (GNUNET_OK !=
498 1 : GNUNET_JSON_parse (j,
499 : spec,
500 : NULL, NULL))
501 : {
502 0 : GNUNET_break_op (0);
503 0 : dr->hr.http_status = 0;
504 0 : dr->hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
505 0 : break;
506 : }
507 : }
508 1 : break;
509 4 : case TALER_EC_EXCHANGE_DEPOSIT_CONFLICTING_CONTRACT:
510 4 : break;
511 0 : default:
512 0 : GNUNET_break_op (0);
513 0 : break;
514 : }
515 : }
516 9 : break;
517 0 : case MHD_HTTP_GONE:
518 : /* could happen if denomination was revoked */
519 : /* Note: one might want to check /keys for revocation
520 : signature here, alas tricky in case our /keys
521 : is outdated => left to clients */
522 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
523 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
524 0 : break;
525 5 : case MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS:
526 : {
527 : struct GNUNET_JSON_Specification spec[] = {
528 5 : GNUNET_JSON_spec_fixed_auto (
529 : "h_payto",
530 : &dr->details.unavailable_for_legal_reasons.h_payto),
531 5 : GNUNET_JSON_spec_uint64 (
532 : "requirement_row",
533 : &dr->details.unavailable_for_legal_reasons.requirement_row),
534 5 : GNUNET_JSON_spec_bool (
535 : "bad_kyc_auth",
536 : &dr->details.unavailable_for_legal_reasons.bad_kyc_auth),
537 5 : GNUNET_JSON_spec_end ()
538 : };
539 :
540 5 : if (GNUNET_OK !=
541 5 : GNUNET_JSON_parse (j,
542 : spec,
543 : NULL, NULL))
544 : {
545 0 : GNUNET_break_op (0);
546 0 : dr->hr.http_status = 0;
547 0 : dr->hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
548 0 : break;
549 : }
550 : }
551 5 : break;
552 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
553 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
554 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
555 : /* Server had an internal issue; we should retry, but this API
556 : leaves this to the application */
557 0 : break;
558 0 : default:
559 : /* unexpected response code */
560 0 : dr->hr.ec = TALER_JSON_get_error_code (j);
561 0 : dr->hr.hint = TALER_JSON_get_error_hint (j);
562 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
563 : "Unexpected response code %u/%d for exchange deposit\n",
564 : (unsigned int) response_code,
565 : dr->hr.ec);
566 0 : GNUNET_break_op (0);
567 0 : break;
568 : }
569 104 : if (NULL != dh->ai_head)
570 8 : return;
571 96 : finish_dh (dh);
572 : }
573 :
574 :
575 : struct TALER_EXCHANGE_BatchDepositHandle *
576 104 : TALER_EXCHANGE_batch_deposit (
577 : struct GNUNET_CURL_Context *ctx,
578 : const char *url,
579 : struct TALER_EXCHANGE_Keys *keys,
580 : const struct TALER_EXCHANGE_DepositContractDetail *dcd,
581 : unsigned int num_cdds,
582 : const struct TALER_EXCHANGE_CoinDepositDetail cdds[static num_cdds],
583 : TALER_EXCHANGE_BatchDepositResultCallback cb,
584 : void *cb_cls,
585 : enum TALER_ErrorCode *ec)
586 104 : {
587 : struct TALER_EXCHANGE_BatchDepositHandle *dh;
588 : json_t *deposit_obj;
589 : json_t *deposits;
590 : CURL *eh;
591 : const struct GNUNET_HashCode *wallet_data_hashp;
592 :
593 104 : if (0 == num_cdds)
594 : {
595 0 : GNUNET_break (0);
596 0 : return NULL;
597 : }
598 104 : if (GNUNET_TIME_timestamp_cmp (dcd->refund_deadline,
599 : >,
600 : dcd->wire_deadline))
601 : {
602 0 : GNUNET_break_op (0);
603 0 : *ec = TALER_EC_EXCHANGE_DEPOSIT_REFUND_DEADLINE_AFTER_WIRE_DEADLINE;
604 0 : return NULL;
605 : }
606 104 : dh = GNUNET_new (struct TALER_EXCHANGE_BatchDepositHandle);
607 104 : dh->auditor_chance = AUDITOR_CHANCE;
608 104 : dh->cb = cb;
609 104 : dh->cb_cls = cb_cls;
610 104 : dh->cdds = GNUNET_memdup (cdds,
611 : num_cdds * sizeof (*cdds));
612 104 : dh->num_cdds = num_cdds;
613 104 : dh->dcd = *dcd;
614 104 : if (NULL != dcd->policy_details)
615 0 : TALER_deposit_policy_hash (dcd->policy_details,
616 : &dh->h_policy);
617 104 : TALER_merchant_wire_signature_hash (dcd->merchant_payto_uri,
618 : &dcd->wire_salt,
619 : &dh->h_wire);
620 104 : deposits = json_array ();
621 104 : GNUNET_assert (NULL != deposits);
622 104 : GNUNET_assert (GNUNET_OK ==
623 : TALER_amount_set_zero (cdds[0].amount.currency,
624 : &dh->total_without_fee));
625 210 : for (unsigned int i = 0; i<num_cdds; i++)
626 : {
627 106 : const struct TALER_EXCHANGE_CoinDepositDetail *cdd = &cdds[i];
628 : const struct TALER_EXCHANGE_DenomPublicKey *dki;
629 : const struct TALER_AgeCommitmentHashP *h_age_commitmentp;
630 : struct TALER_Amount amount_without_fee;
631 :
632 106 : dki = TALER_EXCHANGE_get_denomination_key_by_hash (keys,
633 : &cdd->h_denom_pub);
634 106 : if (NULL == dki)
635 : {
636 0 : *ec = TALER_EC_EXCHANGE_GENERIC_DENOMINATION_KEY_UNKNOWN;
637 0 : GNUNET_break_op (0);
638 0 : json_decref (deposits);
639 0 : return NULL;
640 : }
641 106 : if (0 >
642 106 : TALER_amount_subtract (&amount_without_fee,
643 : &cdd->amount,
644 : &dki->fees.deposit))
645 : {
646 0 : *ec = TALER_EC_EXCHANGE_DEPOSIT_FEE_ABOVE_AMOUNT;
647 0 : GNUNET_break_op (0);
648 0 : GNUNET_free (dh->cdds);
649 0 : GNUNET_free (dh);
650 0 : json_decref (deposits);
651 0 : return NULL;
652 : }
653 106 : GNUNET_assert (0 <=
654 : TALER_amount_add (&dh->total_without_fee,
655 : &dh->total_without_fee,
656 : &amount_without_fee));
657 106 : if (GNUNET_OK !=
658 106 : TALER_EXCHANGE_verify_deposit_signature_ (dcd,
659 106 : &dh->h_policy,
660 106 : &dh->h_wire,
661 : cdd,
662 : dki))
663 : {
664 0 : *ec = TALER_EC_EXCHANGE_DEPOSIT_COIN_SIGNATURE_INVALID;
665 0 : GNUNET_break_op (0);
666 0 : GNUNET_free (dh->cdds);
667 0 : GNUNET_free (dh);
668 0 : json_decref (deposits);
669 0 : return NULL;
670 : }
671 106 : if (! GNUNET_is_zero (&dcd->merchant_sig))
672 : {
673 : /* FIXME #9185: check merchant_sig!? */
674 : }
675 106 : if (GNUNET_is_zero (&cdd->h_age_commitment))
676 80 : h_age_commitmentp = NULL;
677 : else
678 26 : h_age_commitmentp = &cdd->h_age_commitment;
679 106 : GNUNET_assert (
680 : 0 ==
681 : json_array_append_new (
682 : deposits,
683 : GNUNET_JSON_PACK (
684 : TALER_JSON_pack_amount ("contribution",
685 : &cdd->amount),
686 : GNUNET_JSON_pack_data_auto ("denom_pub_hash",
687 : &cdd->h_denom_pub),
688 : TALER_JSON_pack_denom_sig ("ub_sig",
689 : &cdd->denom_sig),
690 : GNUNET_JSON_pack_data_auto ("coin_pub",
691 : &cdd->coin_pub),
692 : GNUNET_JSON_pack_allow_null (
693 : GNUNET_JSON_pack_data_auto ("h_age_commitment",
694 : h_age_commitmentp)),
695 : GNUNET_JSON_pack_data_auto ("coin_sig",
696 : &cdd->coin_sig)
697 : )));
698 : }
699 104 : dh->url = TALER_url_join (url,
700 : "batch-deposit",
701 : NULL);
702 104 : if (NULL == dh->url)
703 : {
704 0 : GNUNET_break (0);
705 0 : *ec = TALER_EC_GENERIC_ALLOCATION_FAILURE;
706 0 : GNUNET_free (dh->url);
707 0 : GNUNET_free (dh->cdds);
708 0 : GNUNET_free (dh);
709 0 : json_decref (deposits);
710 0 : return NULL;
711 : }
712 :
713 104 : if (GNUNET_is_zero (&dcd->wallet_data_hash))
714 104 : wallet_data_hashp = NULL;
715 : else
716 0 : wallet_data_hashp = &dcd->wallet_data_hash;
717 :
718 104 : deposit_obj = GNUNET_JSON_PACK (
719 : TALER_JSON_pack_full_payto ("merchant_payto_uri",
720 : dcd->merchant_payto_uri),
721 : GNUNET_JSON_pack_data_auto ("wire_salt",
722 : &dcd->wire_salt),
723 : GNUNET_JSON_pack_data_auto ("h_contract_terms",
724 : &dcd->h_contract_terms),
725 : GNUNET_JSON_pack_array_steal ("coins",
726 : deposits),
727 : GNUNET_JSON_pack_allow_null (
728 : GNUNET_JSON_pack_data_auto ("wallet_data_hash",
729 : wallet_data_hashp)),
730 : GNUNET_JSON_pack_allow_null (
731 : GNUNET_JSON_pack_object_steal ("policy_details",
732 : (json_t *) dcd->policy_details)),
733 : GNUNET_JSON_pack_timestamp ("timestamp",
734 : dcd->wallet_timestamp),
735 : GNUNET_JSON_pack_data_auto ("merchant_pub",
736 : &dcd->merchant_pub),
737 : GNUNET_JSON_pack_data_auto ("merchant_sig",
738 : &dcd->merchant_sig),
739 : GNUNET_JSON_pack_allow_null (
740 : GNUNET_JSON_pack_timestamp ("refund_deadline",
741 : dcd->refund_deadline)),
742 : GNUNET_JSON_pack_timestamp ("wire_transfer_deadline",
743 : dcd->wire_deadline));
744 104 : GNUNET_assert (NULL != deposit_obj);
745 104 : eh = TALER_EXCHANGE_curl_easy_get_ (dh->url);
746 208 : if ( (NULL == eh) ||
747 : (GNUNET_OK !=
748 104 : TALER_curl_easy_post (&dh->post_ctx,
749 : eh,
750 : deposit_obj)) )
751 : {
752 0 : *ec = TALER_EC_GENERIC_CURL_ALLOCATION_FAILURE;
753 0 : GNUNET_break (0);
754 0 : if (NULL != eh)
755 0 : curl_easy_cleanup (eh);
756 0 : json_decref (deposit_obj);
757 0 : GNUNET_free (dh->cdds);
758 0 : GNUNET_free (dh->url);
759 0 : GNUNET_free (dh);
760 0 : return NULL;
761 : }
762 104 : json_decref (deposit_obj);
763 104 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
764 : "URL for deposit: `%s'\n",
765 : dh->url);
766 104 : dh->ctx = ctx;
767 104 : dh->keys = TALER_EXCHANGE_keys_incref (keys);
768 208 : dh->job = GNUNET_CURL_job_add2 (ctx,
769 : eh,
770 104 : dh->post_ctx.headers,
771 : &handle_deposit_finished,
772 : dh);
773 104 : return dh;
774 : }
775 :
776 :
777 : void
778 6 : TALER_EXCHANGE_batch_deposit_force_dc (
779 : struct TALER_EXCHANGE_BatchDepositHandle *deposit)
780 : {
781 6 : deposit->auditor_chance = 1;
782 6 : }
783 :
784 :
785 : void
786 104 : TALER_EXCHANGE_batch_deposit_cancel (
787 : struct TALER_EXCHANGE_BatchDepositHandle *deposit)
788 : {
789 : struct TEAH_AuditorInteractionEntry *aie;
790 :
791 104 : while (NULL != (aie = deposit->ai_head))
792 : {
793 0 : GNUNET_assert (aie->dh == deposit);
794 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
795 : "Not sending deposit confirmation to auditor `%s' due to cancellation\n",
796 : aie->auditor_url);
797 0 : TALER_AUDITOR_deposit_confirmation_cancel (aie->dch);
798 0 : GNUNET_CONTAINER_DLL_remove (deposit->ai_head,
799 : deposit->ai_tail,
800 : aie);
801 0 : GNUNET_free (aie);
802 : }
803 104 : if (NULL != deposit->job)
804 : {
805 0 : GNUNET_CURL_job_cancel (deposit->job);
806 0 : deposit->job = NULL;
807 : }
808 104 : TALER_EXCHANGE_keys_decref (deposit->keys);
809 104 : GNUNET_free (deposit->url);
810 104 : GNUNET_free (deposit->cdds);
811 104 : TALER_curl_easy_post_finished (&deposit->post_ctx);
812 104 : json_decref (deposit->response);
813 104 : GNUNET_free (deposit);
814 104 : }
815 :
816 :
817 : /* end of exchange_api_batch_deposit.c */
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