exchange_api_handle.c (74435B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2014-2023 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 7 by 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 13 GNU 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 /** 21 * @file lib/exchange_api_handle.c 22 * @brief Implementation of the "handle" component of the exchange's HTTP API 23 * @author Sree Harsha Totakura <sreeharsha@totakura.in> 24 * @author Christian Grothoff 25 */ 26 #include <microhttpd.h> 27 #include <gnunet/gnunet_curl_lib.h> 28 #include "taler/taler_json_lib.h" 29 #include "taler/taler_auditor_service.h" 30 #include "taler/taler_signatures.h" 31 #include "exchange_api_handle.h" 32 #include "taler/taler_curl_lib.h" 33 34 /** 35 * Which version of the Taler protocol is implemented 36 * by this library? Used to determine compatibility. 37 */ 38 #define EXCHANGE_PROTOCOL_CURRENT 41 39 40 /** 41 * How many versions are we backwards compatible with? 42 */ 43 #define EXCHANGE_PROTOCOL_AGE 5 44 45 /** 46 * Set to 1 for extra debug logging. 47 */ 48 #define DEBUG 0 49 50 /** 51 * Current version for (local) JSON serialization of persisted 52 * /keys data. 53 */ 54 #define EXCHANGE_SERIALIZATION_FORMAT_VERSION 0 55 56 /** 57 * How far off do we allow key lifetimes to be? 58 */ 59 #define LIFETIME_TOLERANCE GNUNET_TIME_UNIT_HOURS 60 61 /** 62 * Element in the `struct SignatureContext` array. 63 */ 64 struct SignatureElement 65 { 66 67 /** 68 * Offset of the denomination in the group array, 69 * for sorting (2nd rank, ascending). 70 */ 71 unsigned int offset; 72 73 /** 74 * Offset of the group in the denominations array, 75 * for sorting (2nd rank, ascending). 76 */ 77 unsigned int group_offset; 78 79 /** 80 * Pointer to actual master signature to hash over. 81 */ 82 struct TALER_MasterSignatureP master_sig; 83 }; 84 85 /** 86 * Context for collecting the array of master signatures 87 * needed to verify the exchange_sig online signature. 88 */ 89 struct SignatureContext 90 { 91 /** 92 * Array of signatures to hash over. 93 */ 94 struct SignatureElement *elements; 95 96 /** 97 * Write offset in the @e elements array. 98 */ 99 unsigned int elements_pos; 100 101 /** 102 * Allocated space for @e elements. 103 */ 104 unsigned int elements_size; 105 }; 106 107 108 /** 109 * Determine order to sort two elements by before 110 * we hash the master signatures. Used for 111 * sorting with qsort(). 112 * 113 * @param a pointer to a `struct SignatureElement` 114 * @param b pointer to a `struct SignatureElement` 115 * @return 0 if equal, -1 if a < b, 1 if a > b. 116 */ 117 static int 118 signature_context_sort_cb (const void *a, 119 const void *b) 120 { 121 const struct SignatureElement *sa = a; 122 const struct SignatureElement *sb = b; 123 124 if (sa->group_offset < sb->group_offset) 125 return -1; 126 if (sa->group_offset > sb->group_offset) 127 return 1; 128 if (sa->offset < sb->offset) 129 return -1; 130 if (sa->offset > sb->offset) 131 return 1; 132 /* We should never have two disjoint elements 133 with same time and offset */ 134 GNUNET_assert (sa == sb); 135 return 0; 136 } 137 138 139 /** 140 * Append a @a master_sig to the @a sig_ctx using the 141 * given attributes for (later) sorting. 142 * 143 * @param[in,out] sig_ctx signature context to update 144 * @param group_offset offset for the group 145 * @param offset offset for the entry 146 * @param master_sig master signature for the entry 147 */ 148 static void 149 append_signature (struct SignatureContext *sig_ctx, 150 unsigned int group_offset, 151 unsigned int offset, 152 const struct TALER_MasterSignatureP *master_sig) 153 { 154 struct SignatureElement *element; 155 unsigned int new_size; 156 157 if (sig_ctx->elements_pos == sig_ctx->elements_size) 158 { 159 if (0 == sig_ctx->elements_size) 160 new_size = 1024; 161 else 162 new_size = sig_ctx->elements_size * 2; 163 GNUNET_array_grow (sig_ctx->elements, 164 sig_ctx->elements_size, 165 new_size); 166 } 167 element = &sig_ctx->elements[sig_ctx->elements_pos++]; 168 element->offset = offset; 169 element->group_offset = group_offset; 170 element->master_sig = *master_sig; 171 } 172 173 174 /** 175 * Frees @a wfm array. 176 * 177 * @param wfm fee array to release 178 * @param wfm_len length of the @a wfm array 179 */ 180 static void 181 free_fees (struct TALER_EXCHANGE_WireFeesByMethod *wfm, 182 unsigned int wfm_len) 183 { 184 if (NULL == wfm) 185 return; 186 for (unsigned int i = 0; i<wfm_len; i++) 187 { 188 struct TALER_EXCHANGE_WireFeesByMethod *wfmi = &wfm[i]; 189 190 while (NULL != wfmi->fees_head) 191 { 192 struct TALER_EXCHANGE_WireAggregateFees *fe 193 = wfmi->fees_head; 194 195 wfmi->fees_head = fe->next; 196 GNUNET_free (fe); 197 } 198 GNUNET_free (wfmi->method); 199 } 200 GNUNET_free (wfm); 201 } 202 203 204 /** 205 * Parse wire @a fees and return array. 206 * 207 * @param master_pub master public key to use to check signatures 208 * @param currency currency amounts are expected in 209 * @param fees json AggregateTransferFee to parse 210 * @param[out] fees_len set to length of returned array 211 * @return NULL on error 212 */ 213 static struct TALER_EXCHANGE_WireFeesByMethod * 214 parse_fees (const struct TALER_MasterPublicKeyP *master_pub, 215 const char *currency, 216 const json_t *fees, 217 unsigned int *fees_len) 218 { 219 struct TALER_EXCHANGE_WireFeesByMethod *fbm; 220 size_t fbml = json_object_size (fees); 221 unsigned int i = 0; 222 const char *key; 223 const json_t *fee_array; 224 225 if (UINT_MAX < fbml) 226 { 227 GNUNET_break (0); 228 return NULL; 229 } 230 fbm = GNUNET_new_array (fbml, 231 struct TALER_EXCHANGE_WireFeesByMethod); 232 *fees_len = (unsigned int) fbml; 233 json_object_foreach ((json_t *) fees, key, fee_array) { 234 struct TALER_EXCHANGE_WireFeesByMethod *fe = &fbm[i++]; 235 size_t idx; 236 json_t *fee; 237 238 fe->method = GNUNET_strdup (key); 239 fe->fees_head = NULL; 240 json_array_foreach (fee_array, idx, fee) 241 { 242 struct TALER_EXCHANGE_WireAggregateFees *wa 243 = GNUNET_new (struct TALER_EXCHANGE_WireAggregateFees); 244 struct GNUNET_JSON_Specification spec[] = { 245 GNUNET_JSON_spec_fixed_auto ("sig", 246 &wa->master_sig), 247 TALER_JSON_spec_amount ("wire_fee", 248 currency, 249 &wa->fees.wire), 250 TALER_JSON_spec_amount ("closing_fee", 251 currency, 252 &wa->fees.closing), 253 GNUNET_JSON_spec_timestamp ("start_date", 254 &wa->start_date), 255 GNUNET_JSON_spec_timestamp ("end_date", 256 &wa->end_date), 257 GNUNET_JSON_spec_end () 258 }; 259 260 wa->next = fe->fees_head; 261 fe->fees_head = wa; 262 if (GNUNET_OK != 263 GNUNET_JSON_parse (fee, 264 spec, 265 NULL, 266 NULL)) 267 { 268 GNUNET_break_op (0); 269 free_fees (fbm, 270 i); 271 return NULL; 272 } 273 if (GNUNET_OK != 274 TALER_exchange_offline_wire_fee_verify ( 275 key, 276 wa->start_date, 277 wa->end_date, 278 &wa->fees, 279 master_pub, 280 &wa->master_sig)) 281 { 282 GNUNET_break_op (0); 283 free_fees (fbm, 284 i); 285 return NULL; 286 } 287 } /* for all fees over time */ 288 } /* for all methods */ 289 GNUNET_assert (i == fbml); 290 return fbm; 291 } 292 293 294 void 295 TALER_EXCHANGE_get_auditors_for_dc_ ( 296 struct TALER_EXCHANGE_Keys *keys, 297 TEAH_AuditorCallback ac, 298 void *ac_cls) 299 { 300 if (0 == keys->num_auditors) 301 { 302 GNUNET_log (GNUNET_ERROR_TYPE_INFO, 303 "No auditor available. Not submitting deposit confirmations.\n") 304 ; 305 return; 306 } 307 for (unsigned int i = 0; i<keys->num_auditors; i++) 308 { 309 const struct TALER_EXCHANGE_AuditorInformation *auditor 310 = &keys->auditors[i]; 311 312 ac (ac_cls, 313 auditor->auditor_url, 314 &auditor->auditor_pub); 315 } 316 } 317 318 319 #define EXITIF(cond) \ 320 do { \ 321 if (cond) { GNUNET_break (0); goto EXITIF_exit; } \ 322 } while (0) 323 324 325 /** 326 * Parse a exchange's signing key encoded in JSON. 327 * 328 * @param[out] sign_key where to return the result 329 * @param check_sigs should we check signatures? 330 * @param sign_key_obj json to parse 331 * @param master_key master key to use to verify signature 332 * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is 333 * invalid or the @a sign_key_obj is malformed. 334 */ 335 static enum GNUNET_GenericReturnValue 336 parse_json_signkey (struct TALER_EXCHANGE_SigningPublicKey *sign_key, 337 bool check_sigs, 338 const json_t *sign_key_obj, 339 const struct TALER_MasterPublicKeyP *master_key) 340 { 341 struct GNUNET_JSON_Specification spec[] = { 342 GNUNET_JSON_spec_fixed_auto ("master_sig", 343 &sign_key->master_sig), 344 GNUNET_JSON_spec_fixed_auto ("key", 345 &sign_key->key), 346 GNUNET_JSON_spec_timestamp ("stamp_start", 347 &sign_key->valid_from), 348 GNUNET_JSON_spec_timestamp ("stamp_expire", 349 &sign_key->valid_until), 350 GNUNET_JSON_spec_timestamp ("stamp_end", 351 &sign_key->valid_legal), 352 GNUNET_JSON_spec_end () 353 }; 354 355 if (GNUNET_OK != 356 GNUNET_JSON_parse (sign_key_obj, 357 spec, 358 NULL, NULL)) 359 { 360 GNUNET_break_op (0); 361 return GNUNET_SYSERR; 362 } 363 if (! check_sigs) 364 return GNUNET_OK; 365 if (GNUNET_OK != 366 TALER_exchange_offline_signkey_validity_verify ( 367 &sign_key->key, 368 sign_key->valid_from, 369 sign_key->valid_until, 370 sign_key->valid_legal, 371 master_key, 372 &sign_key->master_sig)) 373 { 374 GNUNET_break_op (0); 375 return GNUNET_SYSERR; 376 } 377 return GNUNET_OK; 378 } 379 380 381 /** 382 * Parse a exchange's denomination key encoded in JSON partially. 383 * 384 * Only the values for master_sig, timestamps and the cipher-specific public 385 * key are parsed. All other fields (fees, age_mask, value) MUST have been set 386 * prior to calling this function, otherwise the signature verification 387 * performed within this function will fail. 388 * 389 * @param[out] denom_key where to return the result 390 * @param cipher cipher type to parse 391 * @param check_sigs should we check signatures? 392 * @param denom_key_obj json to parse 393 * @param master_key master key to use to verify signature 394 * @param group_offset offset for the group 395 * @param index index of this denomination key in the group 396 * @param sig_ctx where to write details about encountered 397 * master signatures, NULL if not used 398 * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is 399 * invalid or the json malformed. 400 */ 401 static enum GNUNET_GenericReturnValue 402 parse_json_denomkey_partially ( 403 struct TALER_EXCHANGE_DenomPublicKey *denom_key, 404 enum GNUNET_CRYPTO_BlindSignatureAlgorithm cipher, 405 bool check_sigs, 406 const json_t *denom_key_obj, 407 struct TALER_MasterPublicKeyP *master_key, 408 unsigned int group_offset, 409 unsigned int index, 410 struct SignatureContext *sig_ctx) 411 { 412 struct GNUNET_JSON_Specification spec[] = { 413 GNUNET_JSON_spec_fixed_auto ("master_sig", 414 &denom_key->master_sig), 415 GNUNET_JSON_spec_timestamp ("stamp_expire_deposit", 416 &denom_key->expire_deposit), 417 GNUNET_JSON_spec_timestamp ("stamp_expire_withdraw", 418 &denom_key->withdraw_valid_until), 419 GNUNET_JSON_spec_timestamp ("stamp_start", 420 &denom_key->valid_from), 421 GNUNET_JSON_spec_timestamp ("stamp_expire_legal", 422 &denom_key->expire_legal), 423 GNUNET_JSON_spec_mark_optional ( 424 GNUNET_JSON_spec_bool ("lost", 425 &denom_key->lost), 426 NULL), 427 TALER_JSON_spec_denom_pub_cipher (NULL, 428 cipher, 429 &denom_key->key), 430 GNUNET_JSON_spec_end () 431 }; 432 433 if (GNUNET_OK != 434 GNUNET_JSON_parse (denom_key_obj, 435 spec, 436 NULL, NULL)) 437 { 438 GNUNET_break_op (0); 439 return GNUNET_SYSERR; 440 } 441 TALER_denom_pub_hash (&denom_key->key, 442 &denom_key->h_key); 443 if (NULL != sig_ctx) 444 append_signature (sig_ctx, 445 group_offset, 446 index, 447 &denom_key->master_sig); 448 if (! check_sigs) 449 return GNUNET_OK; 450 EXITIF (GNUNET_SYSERR == 451 TALER_exchange_offline_denom_validity_verify ( 452 &denom_key->h_key, 453 denom_key->valid_from, 454 denom_key->withdraw_valid_until, 455 denom_key->expire_deposit, 456 denom_key->expire_legal, 457 &denom_key->value, 458 &denom_key->fees, 459 master_key, 460 &denom_key->master_sig)); 461 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 462 "Learned denomination key %s\n", 463 GNUNET_h2s (&denom_key->h_key.hash)); 464 return GNUNET_OK; 465 EXITIF_exit: 466 GNUNET_JSON_parse_free (spec); 467 /* invalidate denom_key, just to be sure */ 468 memset (denom_key, 469 0, 470 sizeof (*denom_key)); 471 return GNUNET_SYSERR; 472 } 473 474 475 /** 476 * Parse a exchange's auditor information encoded in JSON. 477 * 478 * @param[out] auditor where to return the result 479 * @param check_sigs should we check signatures 480 * @param auditor_obj json to parse 481 * @param key_data information about denomination keys 482 * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is 483 * invalid or the json malformed. 484 */ 485 static enum GNUNET_GenericReturnValue 486 parse_json_auditor (struct TALER_EXCHANGE_AuditorInformation *auditor, 487 bool check_sigs, 488 const json_t *auditor_obj, 489 const struct TALER_EXCHANGE_Keys *key_data) 490 { 491 const json_t *keys; 492 json_t *key; 493 size_t off; 494 size_t pos; 495 const char *auditor_url; 496 const char *auditor_name; 497 struct GNUNET_JSON_Specification spec[] = { 498 GNUNET_JSON_spec_fixed_auto ("auditor_pub", 499 &auditor->auditor_pub), 500 TALER_JSON_spec_web_url ("auditor_url", 501 &auditor_url), 502 GNUNET_JSON_spec_string ("auditor_name", 503 &auditor_name), 504 GNUNET_JSON_spec_array_const ("denomination_keys", 505 &keys), 506 GNUNET_JSON_spec_end () 507 }; 508 509 if (GNUNET_OK != 510 GNUNET_JSON_parse (auditor_obj, 511 spec, 512 NULL, NULL)) 513 { 514 GNUNET_break_op (0); 515 #if DEBUG 516 json_dumpf (auditor_obj, 517 stderr, 518 JSON_INDENT (2)); 519 #endif 520 return GNUNET_SYSERR; 521 } 522 auditor->denom_keys 523 = GNUNET_new_array (json_array_size (keys), 524 struct TALER_EXCHANGE_AuditorDenominationInfo); 525 pos = 0; 526 json_array_foreach (keys, off, key) { 527 struct TALER_AuditorSignatureP auditor_sig; 528 struct TALER_DenominationHashP denom_h; 529 const struct TALER_EXCHANGE_DenomPublicKey *dk = NULL; 530 unsigned int dk_off = UINT_MAX; 531 struct GNUNET_JSON_Specification kspec[] = { 532 GNUNET_JSON_spec_fixed_auto ("auditor_sig", 533 &auditor_sig), 534 GNUNET_JSON_spec_fixed_auto ("denom_pub_h", 535 &denom_h), 536 GNUNET_JSON_spec_end () 537 }; 538 539 if (GNUNET_OK != 540 GNUNET_JSON_parse (key, 541 kspec, 542 NULL, NULL)) 543 { 544 GNUNET_break_op (0); 545 continue; 546 } 547 for (unsigned int j = 0; j<key_data->num_denom_keys; j++) 548 { 549 if (0 == GNUNET_memcmp (&denom_h, 550 &key_data->denom_keys[j].h_key)) 551 { 552 dk = &key_data->denom_keys[j]; 553 dk_off = j; 554 break; 555 } 556 } 557 if (NULL == dk) 558 { 559 GNUNET_log (GNUNET_ERROR_TYPE_INFO, 560 "Auditor signed denomination %s, which we do not know. Ignoring signature.\n", 561 GNUNET_h2s (&denom_h.hash)); 562 continue; 563 } 564 if (check_sigs) 565 { 566 if (GNUNET_OK != 567 TALER_auditor_denom_validity_verify ( 568 auditor_url, 569 &dk->h_key, 570 &key_data->master_pub, 571 dk->valid_from, 572 dk->withdraw_valid_until, 573 dk->expire_deposit, 574 dk->expire_legal, 575 &dk->value, 576 &dk->fees, 577 &auditor->auditor_pub, 578 &auditor_sig)) 579 { 580 GNUNET_break_op (0); 581 GNUNET_free (auditor->denom_keys); 582 return GNUNET_SYSERR; 583 } 584 } 585 auditor->denom_keys[pos].denom_key_offset = dk_off; 586 auditor->denom_keys[pos].auditor_sig = auditor_sig; 587 pos++; 588 } 589 if (pos > UINT_MAX) 590 { 591 GNUNET_break (0); 592 GNUNET_free (auditor->denom_keys); 593 return GNUNET_SYSERR; 594 } 595 auditor->num_denom_keys = (unsigned int) pos; 596 auditor->auditor_url = GNUNET_strdup (auditor_url); 597 auditor->auditor_name = GNUNET_strdup (auditor_name); 598 return GNUNET_OK; 599 } 600 601 602 /** 603 * Parse a exchange's global fee information encoded in JSON. 604 * 605 * @param[out] gf where to return the result 606 * @param check_sigs should we check signatures 607 * @param fee_obj json to parse 608 * @param key_data already parsed information about the exchange 609 * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is 610 * invalid or the json malformed. 611 */ 612 static enum GNUNET_GenericReturnValue 613 parse_global_fee (struct TALER_EXCHANGE_GlobalFee *gf, 614 bool check_sigs, 615 const json_t *fee_obj, 616 const struct TALER_EXCHANGE_Keys *key_data) 617 { 618 struct GNUNET_JSON_Specification spec[] = { 619 GNUNET_JSON_spec_timestamp ("start_date", 620 &gf->start_date), 621 GNUNET_JSON_spec_timestamp ("end_date", 622 &gf->end_date), 623 GNUNET_JSON_spec_relative_time ("purse_timeout", 624 &gf->purse_timeout), 625 GNUNET_JSON_spec_relative_time ("history_expiration", 626 &gf->history_expiration), 627 GNUNET_JSON_spec_uint32 ("purse_account_limit", 628 &gf->purse_account_limit), 629 TALER_JSON_SPEC_GLOBAL_FEES (key_data->currency, 630 &gf->fees), 631 GNUNET_JSON_spec_fixed_auto ("master_sig", 632 &gf->master_sig), 633 GNUNET_JSON_spec_end () 634 }; 635 636 if (GNUNET_OK != 637 GNUNET_JSON_parse (fee_obj, 638 spec, 639 NULL, NULL)) 640 { 641 GNUNET_break_op (0); 642 #if DEBUG 643 json_dumpf (fee_obj, 644 stderr, 645 JSON_INDENT (2)); 646 #endif 647 return GNUNET_SYSERR; 648 } 649 if (check_sigs) 650 { 651 if (GNUNET_OK != 652 TALER_exchange_offline_global_fee_verify ( 653 gf->start_date, 654 gf->end_date, 655 &gf->fees, 656 gf->purse_timeout, 657 gf->history_expiration, 658 gf->purse_account_limit, 659 &key_data->master_pub, 660 &gf->master_sig)) 661 { 662 GNUNET_break_op (0); 663 GNUNET_JSON_parse_free (spec); 664 return GNUNET_SYSERR; 665 } 666 } 667 GNUNET_JSON_parse_free (spec); 668 return GNUNET_OK; 669 } 670 671 672 /** 673 * Compare two denomination keys. Ignores revocation data. 674 * 675 * @param denom1 first denomination key 676 * @param denom2 second denomination key 677 * @return 0 if the two keys are equal (not necessarily 678 * the same object), non-zero otherwise. 679 */ 680 static unsigned int 681 denoms_cmp (const struct TALER_EXCHANGE_DenomPublicKey *denom1, 682 const struct TALER_EXCHANGE_DenomPublicKey *denom2) 683 { 684 struct TALER_EXCHANGE_DenomPublicKey tmp1; 685 struct TALER_EXCHANGE_DenomPublicKey tmp2; 686 687 if (0 != 688 TALER_denom_pub_cmp (&denom1->key, 689 &denom2->key)) 690 return 1; 691 tmp1 = *denom1; 692 tmp2 = *denom2; 693 tmp1.revoked = false; 694 tmp2.revoked = false; 695 memset (&tmp1.key, 696 0, 697 sizeof (tmp1.key)); 698 memset (&tmp2.key, 699 0, 700 sizeof (tmp2.key)); 701 return GNUNET_memcmp (&tmp1, 702 &tmp2); 703 } 704 705 706 /** 707 * Decode the JSON array in @a hard_limits from the /keys response 708 * and store the data in `hard_limits` array the @a key_data. 709 * 710 * @param[in] hard_limits JSON array to parse 711 * @param[out] key_data where to store the results we decoded 712 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error 713 * (malformed JSON) 714 */ 715 static enum GNUNET_GenericReturnValue 716 parse_hard_limits (const json_t *hard_limits, 717 struct TALER_EXCHANGE_Keys *key_data) 718 { 719 json_t *obj; 720 size_t off; 721 722 key_data->hard_limits_length 723 = (unsigned int) json_array_size (hard_limits); 724 if ( ((size_t) key_data->hard_limits_length) 725 != json_array_size (hard_limits)) 726 { 727 GNUNET_break (0); 728 return GNUNET_SYSERR; 729 } 730 key_data->hard_limits 731 = GNUNET_new_array (key_data->hard_limits_length, 732 struct TALER_EXCHANGE_AccountLimit); 733 734 json_array_foreach (hard_limits, off, obj) 735 { 736 struct TALER_EXCHANGE_AccountLimit *al 737 = &key_data->hard_limits[off]; 738 struct GNUNET_JSON_Specification spec[] = { 739 TALER_JSON_spec_kycte ("operation_type", 740 &al->operation_type), 741 TALER_JSON_spec_amount_any ("threshold", 742 &al->threshold), 743 GNUNET_JSON_spec_relative_time ("timeframe", 744 &al->timeframe), 745 GNUNET_JSON_spec_mark_optional ( 746 GNUNET_JSON_spec_bool ("soft_limit", 747 &al->soft_limit), 748 NULL), 749 GNUNET_JSON_spec_end () 750 }; 751 752 if (GNUNET_OK != 753 GNUNET_JSON_parse (obj, 754 spec, 755 NULL, NULL)) 756 { 757 GNUNET_break_op (0); 758 return GNUNET_SYSERR; 759 } 760 } 761 return GNUNET_OK; 762 } 763 764 765 /** 766 * Decode the JSON array in @a zero_limits from the /keys response 767 * and store the data in `zero_limits` array the @a key_data. 768 * 769 * @param[in] zero_limits JSON array to parse 770 * @param[out] key_data where to store the results we decoded 771 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error 772 * (malformed JSON) 773 */ 774 static enum GNUNET_GenericReturnValue 775 parse_zero_limits (const json_t *zero_limits, 776 struct TALER_EXCHANGE_Keys *key_data) 777 { 778 json_t *obj; 779 size_t off; 780 781 key_data->zero_limits_length 782 = (unsigned int) json_array_size (zero_limits); 783 if ( ((size_t) key_data->zero_limits_length) 784 != json_array_size (zero_limits)) 785 { 786 GNUNET_break (0); 787 return GNUNET_SYSERR; 788 } 789 key_data->zero_limits 790 = GNUNET_new_array (key_data->zero_limits_length, 791 struct TALER_EXCHANGE_ZeroLimitedOperation); 792 793 json_array_foreach (zero_limits, off, obj) 794 { 795 struct TALER_EXCHANGE_ZeroLimitedOperation *zol 796 = &key_data->zero_limits[off]; 797 struct GNUNET_JSON_Specification spec[] = { 798 TALER_JSON_spec_kycte ("operation_type", 799 &zol->operation_type), 800 GNUNET_JSON_spec_end () 801 }; 802 803 if (GNUNET_OK != 804 GNUNET_JSON_parse (obj, 805 spec, 806 NULL, NULL)) 807 { 808 GNUNET_break_op (0); 809 return GNUNET_SYSERR; 810 } 811 } 812 return GNUNET_OK; 813 } 814 815 816 /** 817 * Parse the wads (partner exchange) array from /keys and store the 818 * data in @a key_data. 819 * 820 * @param[in] wads_array JSON array to parse 821 * @param check_sig true if we should verify signatures 822 * @param[out] key_data where to store the results 823 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error 824 */ 825 static enum GNUNET_GenericReturnValue 826 parse_wads (const json_t *wads_array, 827 bool check_sig, 828 struct TALER_EXCHANGE_Keys *key_data) 829 { 830 size_t n = json_array_size (wads_array); 831 json_t *wad_obj; 832 size_t index; 833 834 if (n > UINT_MAX) 835 { 836 GNUNET_break (0); 837 return GNUNET_SYSERR; 838 } 839 if (0 == n) 840 return GNUNET_OK; 841 key_data->num_wad_partners = (unsigned int) n; 842 key_data->wad_partners 843 = GNUNET_new_array (n, 844 struct TALER_EXCHANGE_WadPartner); 845 json_array_foreach (wads_array, index, wad_obj) 846 { 847 struct TALER_EXCHANGE_WadPartner *wp 848 = &key_data->wad_partners[index]; 849 const char *partner_base_url; 850 struct GNUNET_JSON_Specification spec[] = { 851 TALER_JSON_spec_web_url ("partner_base_url", 852 &partner_base_url), 853 GNUNET_JSON_spec_fixed_auto ("partner_master_pub", 854 &wp->partner_master_pub), 855 TALER_JSON_spec_amount ("wad_fee", 856 key_data->currency, 857 &wp->wad_fee), 858 GNUNET_JSON_spec_relative_time ("wad_frequency", 859 &wp->wad_frequency), 860 GNUNET_JSON_spec_timestamp ("start_date", 861 &wp->start_date), 862 GNUNET_JSON_spec_timestamp ("end_date", 863 &wp->end_date), 864 GNUNET_JSON_spec_fixed_auto ("master_sig", 865 &wp->master_sig), 866 GNUNET_JSON_spec_end () 867 }; 868 869 if (GNUNET_OK != 870 GNUNET_JSON_parse (wad_obj, 871 spec, 872 NULL, NULL)) 873 { 874 GNUNET_break_op (0); 875 return GNUNET_SYSERR; 876 } 877 wp->partner_base_url = GNUNET_strdup (partner_base_url); 878 if (check_sig && 879 GNUNET_OK != 880 TALER_exchange_offline_partner_details_verify ( 881 &wp->partner_master_pub, 882 wp->start_date, 883 wp->end_date, 884 wp->wad_frequency, 885 &wp->wad_fee, 886 partner_base_url, 887 &key_data->master_pub, 888 &wp->master_sig)) 889 { 890 GNUNET_break_op (0); 891 return GNUNET_SYSERR; 892 } 893 } 894 return GNUNET_OK; 895 } 896 897 898 enum GNUNET_GenericReturnValue 899 TALER_EXCHANGE_decode_keys_json_ ( 900 const json_t *resp_obj, 901 bool check_sig, 902 struct TALER_EXCHANGE_Keys *key_data, 903 enum TALER_EXCHANGE_VersionCompatibility *vc) 904 { 905 struct TALER_ExchangeSignatureP exchange_sig; 906 struct TALER_ExchangePublicKeyP exchange_pub; 907 const json_t *wblwk = NULL; 908 const json_t *global_fees; 909 const json_t *sign_keys_array; 910 const json_t *denominations_by_group; 911 const json_t *auditors_array; 912 const json_t *recoup_array = NULL; 913 const json_t *accounts; 914 const json_t *fees; 915 const json_t *wads; 916 const char *shopping_url = NULL; 917 const char *bank_compliance_language = NULL; 918 struct SignatureContext sig_ctx = { 0 }; 919 920 if (JSON_OBJECT != json_typeof (resp_obj)) 921 { 922 GNUNET_break_op (0); 923 return GNUNET_SYSERR; 924 } 925 #if DEBUG 926 json_dumpf (resp_obj, 927 stderr, 928 JSON_INDENT (2)); 929 #endif 930 /* check the version first */ 931 { 932 struct TALER_JSON_ProtocolVersion pv; 933 struct GNUNET_JSON_Specification spec[] = { 934 TALER_JSON_spec_version ("version", 935 &pv), 936 GNUNET_JSON_spec_end () 937 }; 938 939 if (GNUNET_OK != 940 GNUNET_JSON_parse (resp_obj, 941 spec, 942 NULL, NULL)) 943 { 944 GNUNET_break_op (0); 945 return GNUNET_SYSERR; 946 } 947 *vc = TALER_EXCHANGE_VC_MATCH; 948 if (EXCHANGE_PROTOCOL_CURRENT < pv.current) 949 { 950 *vc |= TALER_EXCHANGE_VC_NEWER; 951 if (EXCHANGE_PROTOCOL_CURRENT < pv.current - pv.age) 952 *vc |= TALER_EXCHANGE_VC_INCOMPATIBLE; 953 } 954 if (EXCHANGE_PROTOCOL_CURRENT > pv.current) 955 { 956 *vc |= TALER_EXCHANGE_VC_OLDER; 957 if (EXCHANGE_PROTOCOL_CURRENT - EXCHANGE_PROTOCOL_AGE > pv.current) 958 *vc |= TALER_EXCHANGE_VC_INCOMPATIBLE; 959 } 960 } 961 962 { 963 const char *ver; 964 const char *currency; 965 const char *asset_type; 966 struct GNUNET_JSON_Specification mspec[] = { 967 GNUNET_JSON_spec_fixed_auto ( 968 "exchange_sig", 969 &exchange_sig), 970 GNUNET_JSON_spec_fixed_auto ( 971 "exchange_pub", 972 &exchange_pub), 973 GNUNET_JSON_spec_fixed_auto ( 974 "master_public_key", 975 &key_data->master_pub), 976 GNUNET_JSON_spec_array_const ("accounts", 977 &accounts), 978 GNUNET_JSON_spec_object_const ("wire_fees", 979 &fees), 980 GNUNET_JSON_spec_array_const ("wads", 981 &wads), 982 GNUNET_JSON_spec_timestamp ( 983 "list_issue_date", 984 &key_data->list_issue_date), 985 GNUNET_JSON_spec_relative_time ( 986 "reserve_closing_delay", 987 &key_data->reserve_closing_delay), 988 GNUNET_JSON_spec_mark_optional ( 989 GNUNET_JSON_spec_relative_time ( 990 "default_p2p_push_expiration", 991 &key_data->default_p2p_push_expiration), 992 NULL), 993 GNUNET_JSON_spec_string ( 994 "currency", 995 ¤cy), 996 GNUNET_JSON_spec_string ( 997 "asset_type", 998 &asset_type), 999 GNUNET_JSON_spec_array_const ( 1000 "global_fees", 1001 &global_fees), 1002 GNUNET_JSON_spec_array_const ( 1003 "signkeys", 1004 &sign_keys_array), 1005 GNUNET_JSON_spec_array_const ( 1006 "denominations", 1007 &denominations_by_group), 1008 GNUNET_JSON_spec_mark_optional ( 1009 GNUNET_JSON_spec_array_const ( 1010 "recoup", 1011 &recoup_array), 1012 NULL), 1013 GNUNET_JSON_spec_array_const ( 1014 "auditors", 1015 &auditors_array), 1016 GNUNET_JSON_spec_bool ( 1017 "kyc_enabled", 1018 &key_data->kyc_enabled), 1019 GNUNET_JSON_spec_string ("version", 1020 &ver), 1021 GNUNET_JSON_spec_mark_optional ( 1022 GNUNET_JSON_spec_array_const ( 1023 "wallet_balance_limit_without_kyc", 1024 &wblwk), 1025 NULL), 1026 GNUNET_JSON_spec_mark_optional ( 1027 TALER_JSON_spec_web_url ("shopping_url", 1028 &shopping_url), 1029 NULL), 1030 GNUNET_JSON_spec_mark_optional ( 1031 GNUNET_JSON_spec_string ("bank_compliance_language", 1032 &bank_compliance_language), 1033 NULL), 1034 GNUNET_JSON_spec_mark_optional ( 1035 GNUNET_JSON_spec_bool ("disable_direct_deposit", 1036 &key_data->disable_direct_deposit), 1037 NULL), 1038 GNUNET_JSON_spec_mark_optional ( 1039 GNUNET_JSON_spec_bool ("kyc_swap_tos_acceptance", 1040 &key_data->kyc_swap_tos_acceptance), 1041 NULL), 1042 GNUNET_JSON_spec_end () 1043 }; 1044 const char *emsg; 1045 unsigned int eline; 1046 1047 if (GNUNET_OK != 1048 GNUNET_JSON_parse (resp_obj, 1049 (check_sig) ? mspec : &mspec[2], 1050 &emsg, 1051 &eline)) 1052 { 1053 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, 1054 "Parsing /keys failed for `%s' (%u)\n", 1055 emsg, 1056 eline); 1057 EXITIF (1); 1058 } 1059 { 1060 const json_t *hard_limits = NULL; 1061 const json_t *zero_limits = NULL; 1062 bool no_tiny_amount = false; 1063 struct GNUNET_JSON_Specification sspec[] = { 1064 TALER_JSON_spec_currency_specification ( 1065 "currency_specification", 1066 currency, 1067 &key_data->cspec), 1068 TALER_JSON_spec_amount ( 1069 "stefan_abs", 1070 currency, 1071 &key_data->stefan_abs), 1072 TALER_JSON_spec_amount ( 1073 "stefan_log", 1074 currency, 1075 &key_data->stefan_log), 1076 GNUNET_JSON_spec_mark_optional ( 1077 TALER_JSON_spec_amount ( 1078 "tiny_amount", 1079 currency, 1080 &key_data->tiny_amount), 1081 &no_tiny_amount), 1082 GNUNET_JSON_spec_mark_optional ( 1083 GNUNET_JSON_spec_array_const ( 1084 "hard_limits", 1085 &hard_limits), 1086 NULL), 1087 GNUNET_JSON_spec_mark_optional ( 1088 GNUNET_JSON_spec_array_const ( 1089 "zero_limits", 1090 &zero_limits), 1091 NULL), 1092 GNUNET_JSON_spec_double ( 1093 "stefan_lin", 1094 &key_data->stefan_lin), 1095 GNUNET_JSON_spec_end () 1096 }; 1097 1098 if (GNUNET_OK != 1099 GNUNET_JSON_parse (resp_obj, 1100 sspec, 1101 &emsg, 1102 &eline)) 1103 { 1104 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, 1105 "Parsing /keys failed for `%s' (%u)\n", 1106 emsg, 1107 eline); 1108 EXITIF (1); 1109 } 1110 if ( (NULL != hard_limits) && 1111 (GNUNET_OK != 1112 parse_hard_limits (hard_limits, 1113 key_data)) ) 1114 { 1115 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, 1116 "Parsing hard limits of /keys failed\n"); 1117 EXITIF (1); 1118 } 1119 if ( (NULL != zero_limits) && 1120 (GNUNET_OK != 1121 parse_zero_limits (zero_limits, 1122 key_data)) ) 1123 { 1124 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, 1125 "Parsing hard limits of /keys failed\n"); 1126 EXITIF (1); 1127 } 1128 key_data->tiny_amount_available = ! no_tiny_amount; 1129 } 1130 1131 key_data->currency = GNUNET_strdup (currency); 1132 key_data->version = GNUNET_strdup (ver); 1133 key_data->asset_type = GNUNET_strdup (asset_type); 1134 if (NULL != shopping_url) 1135 key_data->shopping_url = GNUNET_strdup (shopping_url); 1136 if (NULL != bank_compliance_language) 1137 key_data->bank_compliance_language 1138 = GNUNET_strdup (bank_compliance_language); 1139 } 1140 1141 /* parse the global fees */ 1142 EXITIF (json_array_size (global_fees) > UINT_MAX); 1143 key_data->num_global_fees 1144 = (unsigned int) json_array_size (global_fees); 1145 if (0 != key_data->num_global_fees) 1146 { 1147 json_t *global_fee; 1148 size_t index; 1149 1150 key_data->global_fees 1151 = GNUNET_new_array (key_data->num_global_fees, 1152 struct TALER_EXCHANGE_GlobalFee); 1153 json_array_foreach (global_fees, index, global_fee) 1154 { 1155 EXITIF (GNUNET_SYSERR == 1156 parse_global_fee (&key_data->global_fees[index], 1157 check_sig, 1158 global_fee, 1159 key_data)); 1160 } 1161 } 1162 1163 /* parse the signing keys */ 1164 EXITIF (json_array_size (sign_keys_array) > UINT_MAX); 1165 key_data->num_sign_keys 1166 = (unsigned int) json_array_size (sign_keys_array); 1167 if (0 != key_data->num_sign_keys) 1168 { 1169 json_t *sign_key_obj; 1170 size_t index; 1171 1172 key_data->sign_keys 1173 = GNUNET_new_array (key_data->num_sign_keys, 1174 struct TALER_EXCHANGE_SigningPublicKey); 1175 json_array_foreach (sign_keys_array, index, sign_key_obj) { 1176 EXITIF (GNUNET_SYSERR == 1177 parse_json_signkey (&key_data->sign_keys[index], 1178 check_sig, 1179 sign_key_obj, 1180 &key_data->master_pub)); 1181 } 1182 } 1183 1184 /* Parse balance limits */ 1185 if (NULL != wblwk) 1186 { 1187 EXITIF (json_array_size (wblwk) > UINT_MAX); 1188 key_data->wblwk_length 1189 = (unsigned int) json_array_size (wblwk); 1190 key_data->wallet_balance_limit_without_kyc 1191 = GNUNET_new_array (key_data->wblwk_length, 1192 struct TALER_Amount); 1193 for (unsigned int i = 0; i<key_data->wblwk_length; i++) 1194 { 1195 struct TALER_Amount *a = &key_data->wallet_balance_limit_without_kyc[i]; 1196 const json_t *aj = json_array_get (wblwk, 1197 i); 1198 struct GNUNET_JSON_Specification spec[] = { 1199 TALER_JSON_spec_amount (NULL, 1200 key_data->currency, 1201 a), 1202 GNUNET_JSON_spec_end () 1203 }; 1204 1205 EXITIF (GNUNET_OK != 1206 GNUNET_JSON_parse (aj, 1207 spec, 1208 NULL, NULL)); 1209 } 1210 } 1211 1212 /* Parse wire accounts */ 1213 key_data->fees = parse_fees (&key_data->master_pub, 1214 key_data->currency, 1215 fees, 1216 &key_data->fees_len); 1217 EXITIF (NULL == key_data->fees); 1218 /* parse accounts */ 1219 EXITIF (json_array_size (accounts) > UINT_MAX); 1220 GNUNET_array_grow (key_data->accounts, 1221 key_data->accounts_len, 1222 json_array_size (accounts)); 1223 EXITIF (GNUNET_OK != 1224 TALER_EXCHANGE_parse_accounts (&key_data->master_pub, 1225 accounts, 1226 key_data->accounts_len, 1227 key_data->accounts)); 1228 1229 GNUNET_log (GNUNET_ERROR_TYPE_INFO, 1230 "Parsed %u wire accounts from JSON\n", 1231 key_data->accounts_len); 1232 1233 /* Parse wad partners */ 1234 EXITIF (GNUNET_OK != 1235 parse_wads (wads, 1236 check_sig, 1237 key_data)); 1238 1239 1240 /* 1241 * Parse the denomination keys, merging with the 1242 * possibly EXISTING array as required (/keys cherry picking). 1243 * 1244 * The denominations are grouped by common values of 1245 * {cipher, value, fee, age_mask}. 1246 */ 1247 { 1248 json_t *group_obj; 1249 unsigned int group_idx; 1250 1251 json_array_foreach (denominations_by_group, 1252 group_idx, 1253 group_obj) 1254 { 1255 /* First, parse { cipher, fees, value, age_mask, hash } of the current 1256 group. */ 1257 struct TALER_DenominationGroup group = {0}; 1258 const json_t *denom_keys_array; 1259 struct GNUNET_JSON_Specification group_spec[] = { 1260 TALER_JSON_spec_denomination_group (NULL, 1261 key_data->currency, 1262 &group), 1263 GNUNET_JSON_spec_array_const ("denoms", 1264 &denom_keys_array), 1265 GNUNET_JSON_spec_end () 1266 }; 1267 json_t *denom_key_obj; 1268 unsigned int index; 1269 1270 EXITIF (GNUNET_SYSERR == 1271 GNUNET_JSON_parse (group_obj, 1272 group_spec, 1273 NULL, 1274 NULL)); 1275 1276 /* Now, parse the individual denominations */ 1277 json_array_foreach (denom_keys_array, 1278 index, 1279 denom_key_obj) 1280 { 1281 /* Set the common fields from the group for this particular 1282 denomination. Required to make the validity check inside 1283 parse_json_denomkey_partially pass */ 1284 struct TALER_EXCHANGE_DenomPublicKey dk = { 1285 .value = group.value, 1286 .fees = group.fees, 1287 .key.age_mask = group.age_mask 1288 }; 1289 bool found = false; 1290 1291 EXITIF (GNUNET_SYSERR == 1292 parse_json_denomkey_partially (&dk, 1293 group.cipher, 1294 check_sig, 1295 denom_key_obj, 1296 &key_data->master_pub, 1297 group_idx, 1298 index, 1299 check_sig 1300 ? &sig_ctx 1301 : NULL)); 1302 for (unsigned int j = 0; 1303 j<key_data->num_denom_keys; 1304 j++) 1305 { 1306 if (0 == denoms_cmp (&dk, 1307 &key_data->denom_keys[j])) 1308 { 1309 found = true; 1310 break; 1311 } 1312 } 1313 1314 if (found) 1315 { 1316 /* 0:0:0 did not support /keys cherry picking */ 1317 TALER_LOG_DEBUG ("Skipping denomination key: already know it\n"); 1318 TALER_denom_pub_free (&dk.key); 1319 continue; 1320 } 1321 1322 if (key_data->denom_keys_size == key_data->num_denom_keys) 1323 GNUNET_array_grow (key_data->denom_keys, 1324 key_data->denom_keys_size, 1325 key_data->denom_keys_size * 2 + 2); 1326 GNUNET_assert (key_data->denom_keys_size > 1327 key_data->num_denom_keys); 1328 GNUNET_assert (key_data->num_denom_keys < UINT_MAX); 1329 key_data->denom_keys[key_data->num_denom_keys++] = dk; 1330 1331 /* Update "last_denom_issue_date" */ 1332 TALER_LOG_DEBUG ("Adding denomination key that is valid_until %s\n", 1333 GNUNET_TIME_timestamp2s (dk.valid_from)); 1334 key_data->last_denom_issue_date 1335 = GNUNET_TIME_timestamp_max (key_data->last_denom_issue_date, 1336 dk.valid_from); 1337 }; /* end of json_array_foreach over denominations */ 1338 } /* end of json_array_foreach over groups of denominations */ 1339 } /* end of scope for group_ojb/group_idx */ 1340 1341 /* Derive global age_mask from denomination keys */ 1342 for (unsigned int i = 0; i < key_data->num_denom_keys; i++) 1343 { 1344 if (0 != key_data->denom_keys[i].key.age_mask.bits) 1345 { 1346 key_data->age_mask = key_data->denom_keys[i].key.age_mask; 1347 break; 1348 } 1349 } 1350 1351 /* parse the auditor information */ 1352 { 1353 json_t *auditor_info; 1354 unsigned int index; 1355 1356 /* Merge with the existing auditor information we have (/keys cherry picking) */ 1357 json_array_foreach (auditors_array, index, auditor_info) 1358 { 1359 struct TALER_EXCHANGE_AuditorInformation ai; 1360 bool found = false; 1361 1362 memset (&ai, 1363 0, 1364 sizeof (ai)); 1365 EXITIF (GNUNET_SYSERR == 1366 parse_json_auditor (&ai, 1367 check_sig, 1368 auditor_info, 1369 key_data)); 1370 for (unsigned int j = 0; j<key_data->num_auditors; j++) 1371 { 1372 struct TALER_EXCHANGE_AuditorInformation *aix = &key_data->auditors[j]; 1373 1374 if (0 == GNUNET_memcmp (&ai.auditor_pub, 1375 &aix->auditor_pub)) 1376 { 1377 found = true; 1378 /* Merge denomination key signatures of downloaded /keys into existing 1379 auditor information 'aix'. */ 1380 TALER_LOG_DEBUG ( 1381 "Merging %u new audited keys with %u known audited keys\n", 1382 aix->num_denom_keys, 1383 ai.num_denom_keys); 1384 for (unsigned int i = 0; i<ai.num_denom_keys; i++) 1385 { 1386 bool kfound = false; 1387 1388 for (unsigned int k = 0; k<aix->num_denom_keys; k++) 1389 { 1390 if (aix->denom_keys[k].denom_key_offset == 1391 ai.denom_keys[i].denom_key_offset) 1392 { 1393 kfound = true; 1394 break; 1395 } 1396 } 1397 if (! kfound) 1398 GNUNET_array_append (aix->denom_keys, 1399 aix->num_denom_keys, 1400 ai.denom_keys[i]); 1401 } 1402 break; 1403 } 1404 } 1405 if (found) 1406 { 1407 GNUNET_array_grow (ai.denom_keys, 1408 ai.num_denom_keys, 1409 0); 1410 GNUNET_free (ai.auditor_url); 1411 GNUNET_free (ai.auditor_name); 1412 continue; /* we are done */ 1413 } 1414 if (key_data->auditors_size == key_data->num_auditors) 1415 GNUNET_array_grow (key_data->auditors, 1416 key_data->auditors_size, 1417 key_data->auditors_size * 2 + 2); 1418 GNUNET_assert (key_data->auditors_size > 1419 key_data->num_auditors); 1420 GNUNET_assert (NULL != ai.auditor_url); 1421 GNUNET_assert (key_data->num_auditors < UINT_MAX); 1422 key_data->auditors[key_data->num_auditors++] = ai; 1423 }; 1424 } 1425 1426 /* parse the revocation/recoup information */ 1427 if (NULL != recoup_array) 1428 { 1429 json_t *recoup_info; 1430 unsigned int index; 1431 1432 json_array_foreach (recoup_array, index, recoup_info) 1433 { 1434 struct TALER_DenominationHashP h_denom_pub; 1435 struct GNUNET_JSON_Specification spec[] = { 1436 GNUNET_JSON_spec_fixed_auto ("h_denom_pub", 1437 &h_denom_pub), 1438 GNUNET_JSON_spec_end () 1439 }; 1440 1441 EXITIF (GNUNET_OK != 1442 GNUNET_JSON_parse (recoup_info, 1443 spec, 1444 NULL, NULL)); 1445 for (unsigned int j = 0; 1446 j<key_data->num_denom_keys; 1447 j++) 1448 { 1449 if (0 == GNUNET_memcmp (&h_denom_pub, 1450 &key_data->denom_keys[j].h_key)) 1451 { 1452 key_data->denom_keys[j].revoked = true; 1453 break; 1454 } 1455 } 1456 } 1457 } 1458 1459 if (check_sig) 1460 { 1461 struct GNUNET_HashContext *hash_context; 1462 struct GNUNET_HashCode hc; 1463 1464 hash_context = GNUNET_CRYPTO_hash_context_start (); 1465 qsort (sig_ctx.elements, 1466 sig_ctx.elements_pos, 1467 sizeof (struct SignatureElement), 1468 &signature_context_sort_cb); 1469 for (unsigned int i = 0; i<sig_ctx.elements_pos; i++) 1470 { 1471 struct SignatureElement *element = &sig_ctx.elements[i]; 1472 1473 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 1474 "Adding %u,%u,%s\n", 1475 element->group_offset, 1476 element->offset, 1477 TALER_B2S (&element->master_sig)); 1478 GNUNET_CRYPTO_hash_context_read (hash_context, 1479 &element->master_sig, 1480 sizeof (element->master_sig)); 1481 } 1482 GNUNET_array_grow (sig_ctx.elements, 1483 sig_ctx.elements_size, 1484 0); 1485 GNUNET_CRYPTO_hash_context_finish (hash_context, 1486 &hc); 1487 EXITIF (GNUNET_OK != 1488 TALER_EXCHANGE_test_signing_key (key_data, 1489 &exchange_pub)); 1490 EXITIF (GNUNET_OK != 1491 TALER_exchange_online_key_set_verify ( 1492 key_data->list_issue_date, 1493 &hc, 1494 &exchange_pub, 1495 &exchange_sig)); 1496 } 1497 return GNUNET_OK; 1498 1499 EXITIF_exit: 1500 GNUNET_array_grow (sig_ctx.elements, 1501 sig_ctx.elements_size, 1502 0); 1503 *vc = TALER_EXCHANGE_VC_PROTOCOL_ERROR; 1504 return GNUNET_SYSERR; 1505 } 1506 1507 1508 enum GNUNET_GenericReturnValue 1509 TALER_EXCHANGE_test_signing_key ( 1510 const struct TALER_EXCHANGE_Keys *keys, 1511 const struct TALER_ExchangePublicKeyP *pub) 1512 { 1513 struct GNUNET_TIME_Absolute now; 1514 1515 /* we will check using a tolerance of 1h for the time */ 1516 now = GNUNET_TIME_absolute_get (); 1517 for (unsigned int i = 0; i<keys->num_sign_keys; i++) 1518 if ( (GNUNET_TIME_absolute_cmp ( 1519 keys->sign_keys[i].valid_from.abs_time, 1520 <=, 1521 GNUNET_TIME_absolute_add (now, 1522 LIFETIME_TOLERANCE))) && 1523 (GNUNET_TIME_absolute_cmp ( 1524 keys->sign_keys[i].valid_until.abs_time, 1525 >, 1526 GNUNET_TIME_absolute_subtract (now, 1527 LIFETIME_TOLERANCE))) && 1528 (0 == GNUNET_memcmp (pub, 1529 &keys->sign_keys[i].key)) ) 1530 return GNUNET_OK; 1531 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, 1532 "Signing key not valid at time %s\n", 1533 GNUNET_TIME_absolute2s (now)); 1534 return GNUNET_SYSERR; 1535 } 1536 1537 1538 const struct TALER_EXCHANGE_DenomPublicKey * 1539 TALER_EXCHANGE_get_denomination_key ( 1540 const struct TALER_EXCHANGE_Keys *keys, 1541 const struct TALER_DenominationPublicKey *pk) 1542 { 1543 for (unsigned int i = 0; i<keys->num_denom_keys; i++) 1544 if (0 == 1545 TALER_denom_pub_cmp (pk, 1546 &keys->denom_keys[i].key)) 1547 return &keys->denom_keys[i]; 1548 return NULL; 1549 } 1550 1551 1552 const struct TALER_EXCHANGE_GlobalFee * 1553 TALER_EXCHANGE_get_global_fee ( 1554 const struct TALER_EXCHANGE_Keys *keys, 1555 struct GNUNET_TIME_Timestamp ts) 1556 { 1557 for (unsigned int i = 0; i<keys->num_global_fees; i++) 1558 { 1559 const struct TALER_EXCHANGE_GlobalFee *gf = &keys->global_fees[i]; 1560 1561 if (GNUNET_TIME_timestamp_cmp (ts, 1562 >=, 1563 gf->start_date) && 1564 GNUNET_TIME_timestamp_cmp (ts, 1565 <, 1566 gf->end_date)) 1567 return gf; 1568 } 1569 return NULL; 1570 } 1571 1572 1573 struct TALER_EXCHANGE_DenomPublicKey * 1574 TALER_EXCHANGE_copy_denomination_key ( 1575 const struct TALER_EXCHANGE_DenomPublicKey *key) 1576 { 1577 struct TALER_EXCHANGE_DenomPublicKey *copy; 1578 1579 copy = GNUNET_new (struct TALER_EXCHANGE_DenomPublicKey); 1580 *copy = *key; 1581 TALER_denom_pub_copy (©->key, 1582 &key->key); 1583 return copy; 1584 } 1585 1586 1587 void 1588 TALER_EXCHANGE_destroy_denomination_key ( 1589 struct TALER_EXCHANGE_DenomPublicKey *key) 1590 { 1591 TALER_denom_pub_free (&key->key); 1592 GNUNET_free (key); 1593 } 1594 1595 1596 const struct TALER_EXCHANGE_DenomPublicKey * 1597 TALER_EXCHANGE_get_denomination_key_by_hash ( 1598 const struct TALER_EXCHANGE_Keys *keys, 1599 const struct TALER_DenominationHashP *hc) 1600 { 1601 /* FIXME-optimization: should we maybe use a hash map here? */ 1602 for (unsigned int i = 0; i<keys->num_denom_keys; i++) 1603 if (0 == GNUNET_memcmp (hc, 1604 &keys->denom_keys[i].h_key)) 1605 return &keys->denom_keys[i]; 1606 return NULL; 1607 } 1608 1609 1610 struct TALER_EXCHANGE_Keys * 1611 TALER_EXCHANGE_keys_incref (struct TALER_EXCHANGE_Keys *keys) 1612 { 1613 GNUNET_assert (keys->rc < UINT_MAX); 1614 keys->rc++; 1615 return keys; 1616 } 1617 1618 1619 void 1620 TALER_EXCHANGE_keys_decref (struct TALER_EXCHANGE_Keys *keys) 1621 { 1622 if (NULL == keys) 1623 return; 1624 GNUNET_assert (0 < keys->rc); 1625 keys->rc--; 1626 if (0 != keys->rc) 1627 return; 1628 GNUNET_array_grow (keys->sign_keys, 1629 keys->num_sign_keys, 1630 0); 1631 for (unsigned int i = 0; i<keys->num_denom_keys; i++) 1632 TALER_denom_pub_free (&keys->denom_keys[i].key); 1633 keys->num_denom_keys = 0; 1634 GNUNET_array_grow (keys->denom_keys, 1635 keys->denom_keys_size, 1636 0); 1637 for (unsigned int i = 0; i<keys->num_auditors; i++) 1638 { 1639 GNUNET_array_grow (keys->auditors[i].denom_keys, 1640 keys->auditors[i].num_denom_keys, 1641 0); 1642 GNUNET_free (keys->auditors[i].auditor_url); 1643 GNUNET_free (keys->auditors[i].auditor_name); 1644 } 1645 GNUNET_array_grow (keys->auditors, 1646 keys->auditors_size, 1647 0); 1648 TALER_EXCHANGE_free_accounts (keys->accounts_len, 1649 keys->accounts); 1650 GNUNET_array_grow (keys->accounts, 1651 keys->accounts_len, 1652 0); 1653 free_fees (keys->fees, 1654 keys->fees_len); 1655 GNUNET_array_grow (keys->hard_limits, 1656 keys->hard_limits_length, 1657 0); 1658 GNUNET_array_grow (keys->zero_limits, 1659 keys->zero_limits_length, 1660 0); 1661 GNUNET_free (keys->cspec.name); 1662 json_decref (keys->cspec.map_alt_unit_names); 1663 GNUNET_array_grow (keys->cspec.common_amounts, 1664 keys->cspec.num_common_amounts, 1665 0); 1666 GNUNET_free (keys->wallet_balance_limit_without_kyc); 1667 GNUNET_free (keys->version); 1668 GNUNET_free (keys->currency); 1669 GNUNET_free (keys->asset_type); 1670 GNUNET_free (keys->shopping_url); 1671 GNUNET_free (keys->bank_compliance_language); 1672 for (unsigned int i = 0; i < keys->num_wad_partners; i++) 1673 GNUNET_free (keys->wad_partners[i].partner_base_url); 1674 GNUNET_free (keys->wad_partners); 1675 GNUNET_free (keys->global_fees); 1676 GNUNET_free (keys->exchange_url); 1677 GNUNET_free (keys); 1678 } 1679 1680 1681 struct TALER_EXCHANGE_Keys * 1682 TALER_EXCHANGE_keys_from_json (const json_t *j) 1683 { 1684 const json_t *jkeys; 1685 const char *url; 1686 uint32_t version; 1687 struct GNUNET_TIME_Timestamp expire 1688 = GNUNET_TIME_UNIT_ZERO_TS; 1689 struct GNUNET_JSON_Specification spec[] = { 1690 GNUNET_JSON_spec_uint32 ("version", 1691 &version), 1692 GNUNET_JSON_spec_object_const ("keys", 1693 &jkeys), 1694 TALER_JSON_spec_web_url ("exchange_url", 1695 &url), 1696 GNUNET_JSON_spec_mark_optional ( 1697 GNUNET_JSON_spec_timestamp ("expire", 1698 &expire), 1699 NULL), 1700 GNUNET_JSON_spec_end () 1701 }; 1702 struct TALER_EXCHANGE_Keys *keys; 1703 enum TALER_EXCHANGE_VersionCompatibility compat; 1704 1705 if (NULL == j) 1706 return NULL; 1707 if (GNUNET_OK != 1708 GNUNET_JSON_parse (j, 1709 spec, 1710 NULL, NULL)) 1711 { 1712 GNUNET_break_op (0); 1713 return NULL; 1714 } 1715 if (0 != version) 1716 { 1717 return NULL; /* unsupported version */ 1718 } 1719 keys = GNUNET_new (struct TALER_EXCHANGE_Keys); 1720 keys->rc = 1; 1721 keys->key_data_expiration = expire; 1722 keys->exchange_url = GNUNET_strdup (url); 1723 if (GNUNET_OK != 1724 TALER_EXCHANGE_decode_keys_json_ (jkeys, 1725 false, 1726 keys, 1727 &compat)) 1728 { 1729 GNUNET_break (0); 1730 TALER_EXCHANGE_keys_decref (keys); 1731 return NULL; 1732 } 1733 return keys; 1734 } 1735 1736 1737 /** 1738 * Data we track per denomination group. 1739 */ 1740 struct GroupData 1741 { 1742 /** 1743 * The json blob with the group meta-data and list of denominations 1744 */ 1745 json_t *json; 1746 1747 /** 1748 * Meta data for this group. 1749 */ 1750 struct TALER_DenominationGroup meta; 1751 }; 1752 1753 1754 /** 1755 * Add denomination group represented by @a value 1756 * to list of denominations in @a cls. Also frees 1757 * the @a value. 1758 * 1759 * @param[in,out] cls a `json_t *` with an array to build 1760 * @param key unused 1761 * @param value a `struct GroupData *` 1762 * @return #GNUNET_OK (continue to iterate) 1763 */ 1764 static enum GNUNET_GenericReturnValue 1765 add_grp (void *cls, 1766 const struct GNUNET_HashCode *key, 1767 void *value) 1768 { 1769 json_t *denominations_by_group = cls; 1770 struct GroupData *gd = value; 1771 const char *cipher; 1772 json_t *ge; 1773 bool age_restricted = gd->meta.age_mask.bits != 0; 1774 1775 (void) key; 1776 switch (gd->meta.cipher) 1777 { 1778 case GNUNET_CRYPTO_BSA_RSA: 1779 cipher = age_restricted ? "RSA+age_restricted" : "RSA"; 1780 break; 1781 case GNUNET_CRYPTO_BSA_CS: 1782 cipher = age_restricted ? "CS+age_restricted" : "CS"; 1783 break; 1784 default: 1785 GNUNET_assert (false); 1786 } 1787 1788 ge = GNUNET_JSON_PACK ( 1789 GNUNET_JSON_pack_string ("cipher", 1790 cipher), 1791 GNUNET_JSON_pack_array_steal ("denoms", 1792 gd->json), 1793 TALER_JSON_PACK_DENOM_FEES ("fee", 1794 &gd->meta.fees), 1795 GNUNET_JSON_pack_allow_null ( 1796 age_restricted 1797 ? GNUNET_JSON_pack_uint64 ("age_mask", 1798 gd->meta.age_mask.bits) 1799 : GNUNET_JSON_pack_string ("dummy", 1800 NULL)), 1801 TALER_JSON_pack_amount ("value", 1802 &gd->meta.value)); 1803 GNUNET_assert (0 == 1804 json_array_append_new (denominations_by_group, 1805 ge)); 1806 GNUNET_free (gd); 1807 return GNUNET_OK; 1808 } 1809 1810 1811 /** 1812 * Convert array of account restrictions @a ars to JSON. 1813 * 1814 * @param ar_len length of @a ars 1815 * @param ars account restrictions to convert 1816 * @return JSON representation 1817 */ 1818 static json_t * 1819 ar_to_json (unsigned int ar_len, 1820 const struct TALER_EXCHANGE_AccountRestriction ars[static ar_len]) 1821 { 1822 json_t *rval; 1823 1824 rval = json_array (); 1825 GNUNET_assert (NULL != rval); 1826 for (unsigned int i = 0; i<ar_len; i++) 1827 { 1828 const struct TALER_EXCHANGE_AccountRestriction *ar = &ars[i]; 1829 1830 switch (ar->type) 1831 { 1832 case TALER_EXCHANGE_AR_INVALID: 1833 GNUNET_break (0); 1834 json_decref (rval); 1835 return NULL; 1836 case TALER_EXCHANGE_AR_DENY: 1837 GNUNET_assert ( 1838 0 == 1839 json_array_append_new ( 1840 rval, 1841 GNUNET_JSON_PACK ( 1842 GNUNET_JSON_pack_string ("type", 1843 "deny")))); 1844 break; 1845 case TALER_EXCHANGE_AR_REGEX: 1846 GNUNET_assert ( 1847 0 == 1848 json_array_append_new ( 1849 rval, 1850 GNUNET_JSON_PACK ( 1851 GNUNET_JSON_pack_string ( 1852 "type", 1853 "regex"), 1854 GNUNET_JSON_pack_string ( 1855 "payto_regex", 1856 ar->details.regex.posix_egrep), 1857 GNUNET_JSON_pack_string ( 1858 "human_hint", 1859 ar->details.regex.human_hint), 1860 GNUNET_JSON_pack_object_incref ( 1861 "human_hint_i18n", 1862 (json_t *) ar->details.regex.human_hint_i18n) 1863 ))); 1864 break; 1865 } 1866 } 1867 return rval; 1868 } 1869 1870 1871 json_t * 1872 TALER_EXCHANGE_keys_to_json (const struct TALER_EXCHANGE_Keys *kd) 1873 { 1874 struct GNUNET_TIME_Timestamp now; 1875 json_t *keys; 1876 json_t *signkeys; 1877 json_t *denominations_by_group; 1878 json_t *auditors; 1879 json_t *recoup; 1880 json_t *wire_fees; 1881 json_t *accounts; 1882 json_t *global_fees; 1883 json_t *wblwk = NULL; 1884 json_t *wads_json; 1885 json_t *hard_limits; 1886 json_t *zero_limits; 1887 1888 now = GNUNET_TIME_timestamp_get (); 1889 signkeys = json_array (); 1890 GNUNET_assert (NULL != signkeys); 1891 for (unsigned int i = 0; i<kd->num_sign_keys; i++) 1892 { 1893 const struct TALER_EXCHANGE_SigningPublicKey *sk = &kd->sign_keys[i]; 1894 json_t *signkey; 1895 1896 if (GNUNET_TIME_timestamp_cmp (now, 1897 >, 1898 sk->valid_until)) 1899 continue; /* skip keys that have expired */ 1900 signkey = GNUNET_JSON_PACK ( 1901 GNUNET_JSON_pack_data_auto ("key", 1902 &sk->key), 1903 GNUNET_JSON_pack_data_auto ("master_sig", 1904 &sk->master_sig), 1905 GNUNET_JSON_pack_timestamp ("stamp_start", 1906 sk->valid_from), 1907 GNUNET_JSON_pack_timestamp ("stamp_expire", 1908 sk->valid_until), 1909 GNUNET_JSON_pack_timestamp ("stamp_end", 1910 sk->valid_legal)); 1911 GNUNET_assert (NULL != signkey); 1912 GNUNET_assert (0 == 1913 json_array_append_new (signkeys, 1914 signkey)); 1915 } 1916 1917 denominations_by_group = json_array (); 1918 GNUNET_assert (NULL != denominations_by_group); 1919 { 1920 struct GNUNET_CONTAINER_MultiHashMap *dbg; 1921 1922 dbg = GNUNET_CONTAINER_multihashmap_create (128, 1923 false); 1924 for (unsigned int i = 0; i<kd->num_denom_keys; i++) 1925 { 1926 const struct TALER_EXCHANGE_DenomPublicKey *dk = &kd->denom_keys[i]; 1927 struct TALER_DenominationGroup meta = { 1928 .cipher = dk->key.bsign_pub_key->cipher, 1929 .value = dk->value, 1930 .fees = dk->fees, 1931 .age_mask = dk->key.age_mask 1932 }; 1933 struct GNUNET_HashCode key; 1934 struct GroupData *gd; 1935 json_t *denom; 1936 struct GNUNET_JSON_PackSpec key_spec; 1937 1938 if (GNUNET_TIME_timestamp_cmp (now, 1939 >, 1940 dk->expire_deposit)) 1941 continue; /* skip keys that have expired */ 1942 TALER_denomination_group_get_key (&meta, 1943 &key); 1944 gd = GNUNET_CONTAINER_multihashmap_get (dbg, 1945 &key); 1946 if (NULL == gd) 1947 { 1948 gd = GNUNET_new (struct GroupData); 1949 gd->meta = meta; 1950 gd->json = json_array (); 1951 GNUNET_assert (NULL != gd->json); 1952 GNUNET_assert ( 1953 GNUNET_OK == 1954 GNUNET_CONTAINER_multihashmap_put (dbg, 1955 &key, 1956 gd, 1957 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY)); 1958 1959 } 1960 switch (meta.cipher) 1961 { 1962 case GNUNET_CRYPTO_BSA_RSA: 1963 key_spec = 1964 GNUNET_JSON_pack_rsa_public_key ( 1965 "rsa_pub", 1966 dk->key.bsign_pub_key->details.rsa_public_key); 1967 break; 1968 case GNUNET_CRYPTO_BSA_CS: 1969 key_spec = 1970 GNUNET_JSON_pack_data_varsize ( 1971 "cs_pub", 1972 &dk->key.bsign_pub_key->details.cs_public_key, 1973 sizeof (dk->key.bsign_pub_key->details.cs_public_key)); 1974 break; 1975 default: 1976 GNUNET_assert (false); 1977 } 1978 denom = GNUNET_JSON_PACK ( 1979 GNUNET_JSON_pack_timestamp ("stamp_expire_deposit", 1980 dk->expire_deposit), 1981 GNUNET_JSON_pack_timestamp ("stamp_expire_withdraw", 1982 dk->withdraw_valid_until), 1983 GNUNET_JSON_pack_timestamp ("stamp_start", 1984 dk->valid_from), 1985 GNUNET_JSON_pack_timestamp ("stamp_expire_legal", 1986 dk->expire_legal), 1987 GNUNET_JSON_pack_data_auto ("master_sig", 1988 &dk->master_sig), 1989 key_spec 1990 ); 1991 GNUNET_assert (0 == 1992 json_array_append_new (gd->json, 1993 denom)); 1994 } 1995 GNUNET_CONTAINER_multihashmap_iterate (dbg, 1996 &add_grp, 1997 denominations_by_group); 1998 GNUNET_CONTAINER_multihashmap_destroy (dbg); 1999 } 2000 2001 auditors = json_array (); 2002 GNUNET_assert (NULL != auditors); 2003 for (unsigned int i = 0; i<kd->num_auditors; i++) 2004 { 2005 const struct TALER_EXCHANGE_AuditorInformation *ai = &kd->auditors[i]; 2006 json_t *a; 2007 json_t *adenoms; 2008 2009 adenoms = json_array (); 2010 GNUNET_assert (NULL != adenoms); 2011 for (unsigned int j = 0; j<ai->num_denom_keys; j++) 2012 { 2013 const struct TALER_EXCHANGE_AuditorDenominationInfo *adi = 2014 &ai->denom_keys[j]; 2015 const struct TALER_EXCHANGE_DenomPublicKey *dk = 2016 &kd->denom_keys[adi->denom_key_offset]; 2017 json_t *k; 2018 2019 GNUNET_assert (adi->denom_key_offset < kd->num_denom_keys); 2020 if (GNUNET_TIME_timestamp_cmp (now, 2021 >, 2022 dk->expire_deposit)) 2023 continue; /* skip auditor signatures for denomination keys that have expired */ 2024 GNUNET_assert (adi->denom_key_offset < kd->num_denom_keys); 2025 k = GNUNET_JSON_PACK ( 2026 GNUNET_JSON_pack_data_auto ("denom_pub_h", 2027 &dk->h_key), 2028 GNUNET_JSON_pack_data_auto ("auditor_sig", 2029 &adi->auditor_sig)); 2030 GNUNET_assert (0 == 2031 json_array_append_new (adenoms, 2032 k)); 2033 } 2034 2035 a = GNUNET_JSON_PACK ( 2036 GNUNET_JSON_pack_data_auto ("auditor_pub", 2037 &ai->auditor_pub), 2038 GNUNET_JSON_pack_string ("auditor_url", 2039 ai->auditor_url), 2040 GNUNET_JSON_pack_string ("auditor_name", 2041 ai->auditor_name), 2042 GNUNET_JSON_pack_array_steal ("denomination_keys", 2043 adenoms)); 2044 GNUNET_assert (0 == 2045 json_array_append_new (auditors, 2046 a)); 2047 } 2048 2049 global_fees = json_array (); 2050 GNUNET_assert (NULL != global_fees); 2051 for (unsigned int i = 0; i<kd->num_global_fees; i++) 2052 { 2053 const struct TALER_EXCHANGE_GlobalFee *gf 2054 = &kd->global_fees[i]; 2055 2056 if (GNUNET_TIME_absolute_is_past (gf->end_date.abs_time)) 2057 continue; 2058 GNUNET_assert ( 2059 0 == 2060 json_array_append_new ( 2061 global_fees, 2062 GNUNET_JSON_PACK ( 2063 GNUNET_JSON_pack_timestamp ("start_date", 2064 gf->start_date), 2065 GNUNET_JSON_pack_timestamp ("end_date", 2066 gf->end_date), 2067 TALER_JSON_PACK_GLOBAL_FEES (&gf->fees), 2068 GNUNET_JSON_pack_time_rel ("history_expiration", 2069 gf->history_expiration), 2070 GNUNET_JSON_pack_time_rel ("purse_timeout", 2071 gf->purse_timeout), 2072 GNUNET_JSON_pack_uint64 ("purse_account_limit", 2073 gf->purse_account_limit), 2074 GNUNET_JSON_pack_data_auto ("master_sig", 2075 &gf->master_sig)))); 2076 } 2077 2078 accounts = json_array (); 2079 GNUNET_assert (NULL != accounts); 2080 for (unsigned int i = 0; i<kd->accounts_len; i++) 2081 { 2082 const struct TALER_EXCHANGE_WireAccount *acc 2083 = &kd->accounts[i]; 2084 json_t *credit_restrictions; 2085 json_t *debit_restrictions; 2086 2087 credit_restrictions 2088 = ar_to_json (acc->credit_restrictions_length, 2089 acc->credit_restrictions); 2090 GNUNET_assert (NULL != credit_restrictions); 2091 debit_restrictions 2092 = ar_to_json (acc->debit_restrictions_length, 2093 acc->debit_restrictions); 2094 GNUNET_assert (NULL != debit_restrictions); 2095 GNUNET_assert ( 2096 0 == 2097 json_array_append_new ( 2098 accounts, 2099 GNUNET_JSON_PACK ( 2100 TALER_JSON_pack_full_payto ("payto_uri", 2101 acc->fpayto_uri), 2102 GNUNET_JSON_pack_allow_null ( 2103 GNUNET_JSON_pack_string ("conversion_url", 2104 acc->conversion_url)), 2105 GNUNET_JSON_pack_allow_null ( 2106 GNUNET_JSON_pack_string ("open_banking_gateway", 2107 acc->open_banking_gateway)), 2108 GNUNET_JSON_pack_allow_null ( 2109 GNUNET_JSON_pack_string ("prepared_transfer_url", 2110 acc->prepared_transfer_url)), 2111 GNUNET_JSON_pack_int64 ("priority", 2112 acc->priority), 2113 GNUNET_JSON_pack_allow_null ( 2114 GNUNET_JSON_pack_string ("bank_label", 2115 acc->bank_label)), 2116 GNUNET_JSON_pack_array_steal ("debit_restrictions", 2117 debit_restrictions), 2118 GNUNET_JSON_pack_array_steal ("credit_restrictions", 2119 credit_restrictions), 2120 GNUNET_JSON_pack_data_auto ("master_sig", 2121 &acc->master_sig)))); 2122 } 2123 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 2124 "Serialized %u/%u wire accounts to JSON\n", 2125 (unsigned int) json_array_size (accounts), 2126 kd->accounts_len); 2127 2128 wire_fees = json_object (); 2129 GNUNET_assert (NULL != wire_fees); 2130 for (unsigned int i = 0; i<kd->fees_len; i++) 2131 { 2132 const struct TALER_EXCHANGE_WireFeesByMethod *fbw 2133 = &kd->fees[i]; 2134 json_t *wf; 2135 2136 wf = json_array (); 2137 GNUNET_assert (NULL != wf); 2138 for (struct TALER_EXCHANGE_WireAggregateFees *p = fbw->fees_head; 2139 NULL != p; 2140 p = p->next) 2141 { 2142 GNUNET_assert ( 2143 0 == 2144 json_array_append_new ( 2145 wf, 2146 GNUNET_JSON_PACK ( 2147 TALER_JSON_pack_amount ("wire_fee", 2148 &p->fees.wire), 2149 TALER_JSON_pack_amount ("closing_fee", 2150 &p->fees.closing), 2151 GNUNET_JSON_pack_timestamp ("start_date", 2152 p->start_date), 2153 GNUNET_JSON_pack_timestamp ("end_date", 2154 p->end_date), 2155 GNUNET_JSON_pack_data_auto ("sig", 2156 &p->master_sig)))); 2157 } 2158 GNUNET_assert (0 == 2159 json_object_set_new (wire_fees, 2160 fbw->method, 2161 wf)); 2162 } 2163 2164 recoup = json_array (); 2165 GNUNET_assert (NULL != recoup); 2166 for (unsigned int i = 0; i<kd->num_denom_keys; i++) 2167 { 2168 const struct TALER_EXCHANGE_DenomPublicKey *dk 2169 = &kd->denom_keys[i]; 2170 if (! dk->revoked) 2171 continue; 2172 GNUNET_assert (0 == 2173 json_array_append_new ( 2174 recoup, 2175 GNUNET_JSON_PACK ( 2176 GNUNET_JSON_pack_data_auto ("h_denom_pub", 2177 &dk->h_key)))); 2178 } 2179 2180 wblwk = json_array (); 2181 GNUNET_assert (NULL != wblwk); 2182 for (unsigned int i = 0; i<kd->wblwk_length; i++) 2183 { 2184 const struct TALER_Amount *a = &kd->wallet_balance_limit_without_kyc[i]; 2185 2186 GNUNET_assert (0 == 2187 json_array_append_new ( 2188 wblwk, 2189 TALER_JSON_from_amount (a))); 2190 } 2191 2192 hard_limits = json_array (); 2193 for (unsigned int i = 0; i < kd->hard_limits_length; i++) 2194 { 2195 const struct TALER_EXCHANGE_AccountLimit *al 2196 = &kd->hard_limits[i]; 2197 json_t *j; 2198 2199 j = GNUNET_JSON_PACK ( 2200 TALER_JSON_pack_amount ("threshold", 2201 &al->threshold), 2202 GNUNET_JSON_pack_time_rel ("timeframe", 2203 al->timeframe), 2204 TALER_JSON_pack_kycte ("operation_type", 2205 al->operation_type), 2206 GNUNET_JSON_pack_bool ("soft_limit", 2207 al->soft_limit) 2208 ); 2209 GNUNET_assert (0 == 2210 json_array_append_new ( 2211 hard_limits, 2212 j)); 2213 } 2214 2215 zero_limits = json_array (); 2216 for (unsigned int i = 0; i < kd->zero_limits_length; i++) 2217 { 2218 const struct TALER_EXCHANGE_ZeroLimitedOperation *zol 2219 = &kd->zero_limits[i]; 2220 json_t *j; 2221 2222 j = GNUNET_JSON_PACK ( 2223 TALER_JSON_pack_kycte ("operation_type", 2224 zol->operation_type) 2225 ); 2226 GNUNET_assert (0 == 2227 json_array_append_new ( 2228 zero_limits, 2229 j)); 2230 } 2231 2232 wads_json = json_array (); 2233 GNUNET_assert (NULL != wads_json); 2234 for (unsigned int i = 0; i < kd->num_wad_partners; i++) 2235 { 2236 const struct TALER_EXCHANGE_WadPartner *wp 2237 = &kd->wad_partners[i]; 2238 2239 GNUNET_assert ( 2240 0 == 2241 json_array_append_new ( 2242 wads_json, 2243 GNUNET_JSON_PACK ( 2244 GNUNET_JSON_pack_string ("partner_base_url", 2245 wp->partner_base_url), 2246 GNUNET_JSON_pack_data_auto ("partner_master_pub", 2247 &wp->partner_master_pub), 2248 TALER_JSON_pack_amount ("wad_fee", 2249 &wp->wad_fee), 2250 GNUNET_JSON_pack_time_rel ("wad_frequency", 2251 wp->wad_frequency), 2252 GNUNET_JSON_pack_timestamp ("start_date", 2253 wp->start_date), 2254 GNUNET_JSON_pack_timestamp ("end_date", 2255 wp->end_date), 2256 GNUNET_JSON_pack_data_auto ("master_sig", 2257 &wp->master_sig)))); 2258 } 2259 2260 keys = GNUNET_JSON_PACK ( 2261 GNUNET_JSON_pack_string ("version", 2262 kd->version), 2263 GNUNET_JSON_pack_string ("currency", 2264 kd->currency), 2265 GNUNET_JSON_pack_object_steal ("currency_specification", 2266 TALER_JSON_currency_specs_to_json ( 2267 &kd->cspec)), 2268 TALER_JSON_pack_amount ("stefan_abs", 2269 &kd->stefan_abs), 2270 TALER_JSON_pack_amount ("stefan_log", 2271 &kd->stefan_log), 2272 GNUNET_JSON_pack_double ("stefan_lin", 2273 kd->stefan_lin), 2274 GNUNET_JSON_pack_allow_null ( 2275 kd->tiny_amount_available 2276 ? TALER_JSON_pack_amount ("tiny_amount", 2277 &kd->tiny_amount) 2278 : GNUNET_JSON_pack_string ("dummy", 2279 NULL)), 2280 GNUNET_JSON_pack_string ("asset_type", 2281 kd->asset_type), 2282 GNUNET_JSON_pack_allow_null ( 2283 GNUNET_JSON_pack_string ("shopping_url", 2284 kd->shopping_url)), 2285 GNUNET_JSON_pack_allow_null ( 2286 GNUNET_JSON_pack_string ("bank_compliance_language", 2287 kd->bank_compliance_language)), 2288 GNUNET_JSON_pack_bool ("disable_direct_deposit", 2289 kd->disable_direct_deposit), 2290 GNUNET_JSON_pack_bool ("kyc_swap_tos_acceptance", 2291 kd->kyc_swap_tos_acceptance), 2292 GNUNET_JSON_pack_data_auto ("master_public_key", 2293 &kd->master_pub), 2294 GNUNET_JSON_pack_time_rel ("reserve_closing_delay", 2295 kd->reserve_closing_delay), 2296 GNUNET_JSON_pack_allow_null ( 2297 GNUNET_TIME_relative_is_zero (kd->default_p2p_push_expiration) 2298 ? GNUNET_JSON_pack_string ("dummy", 2299 NULL) 2300 : GNUNET_JSON_pack_time_rel ("default_p2p_push_expiration", 2301 kd->default_p2p_push_expiration)), 2302 GNUNET_JSON_pack_timestamp ("list_issue_date", 2303 kd->list_issue_date), 2304 GNUNET_JSON_pack_array_steal ("global_fees", 2305 global_fees), 2306 GNUNET_JSON_pack_array_steal ("signkeys", 2307 signkeys), 2308 GNUNET_JSON_pack_object_steal ("wire_fees", 2309 wire_fees), 2310 GNUNET_JSON_pack_array_steal ("accounts", 2311 accounts), 2312 GNUNET_JSON_pack_array_steal ("wads", 2313 wads_json), 2314 GNUNET_JSON_pack_array_steal ("hard_limits", 2315 hard_limits), 2316 GNUNET_JSON_pack_array_steal ("zero_limits", 2317 zero_limits), 2318 GNUNET_JSON_pack_array_steal ("denominations", 2319 denominations_by_group), 2320 GNUNET_JSON_pack_allow_null ( 2321 GNUNET_JSON_pack_array_steal ("recoup", 2322 recoup)), 2323 GNUNET_JSON_pack_array_steal ("auditors", 2324 auditors), 2325 GNUNET_JSON_pack_bool ("kyc_enabled", 2326 kd->kyc_enabled), 2327 GNUNET_JSON_pack_allow_null ( 2328 GNUNET_JSON_pack_array_steal ("wallet_balance_limit_without_kyc", 2329 wblwk)) 2330 2331 ); 2332 return GNUNET_JSON_PACK ( 2333 GNUNET_JSON_pack_uint64 ("version", 2334 EXCHANGE_SERIALIZATION_FORMAT_VERSION), 2335 GNUNET_JSON_pack_allow_null ( 2336 GNUNET_JSON_pack_timestamp ("expire", 2337 kd->key_data_expiration)), 2338 GNUNET_JSON_pack_string ("exchange_url", 2339 kd->exchange_url), 2340 GNUNET_JSON_pack_object_steal ("keys", 2341 keys)); 2342 } 2343 2344 2345 /* end of exchange_api_handle.c */