aboutsummaryrefslogtreecommitdiff
path: root/src/exchange-lib/testing_api_cmd_deposit.c
blob: 9756d0bee1107bd18d96235e48f2d8bbf2b38bef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
/*
  This file is part of TALER
  Copyright (C) 2018 Taler Systems SA

  TALER is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3, or (at your
  option) any later version.

  TALER is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public
  License along with TALER; see the file COPYING.  If not, see
  <http://www.gnu.org/licenses/>
*/

/**
 * @file exchange-lib/testing_api_cmd_deposit.c
 * @brief command for testing /deposit.
 * @author Marcello Stanisci
 */

#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "exchange_api_handle.h"
#include "taler_testing_lib.h"
#include "taler_signatures.h"


/**
 * State for a "deposit" CMD.
 */
struct DepositState
{

  /**
   * Amount to deposit.
   */
  const char *amount;

  /**
   * Reference to any command that is able to provide a coin.
   */
  const char *coin_reference;

  /**
   * If @e coin_reference refers to an operation that generated
   * an array of coins, this value determines which coin to pick.
   */
  unsigned int coin_index;

  /**
   * Wire details of who is depositing -- this would be merchant
   * wire details in a normal scenario.
   */
  json_t *wire_details;

  /**
   * JSON string describing what a proposal is about.
   */
  const char *contract_terms;

  /**
   * Relative time (to add to 'now') to compute the refund
   * deadline.  Zero for no refunds.
   */
  struct GNUNET_TIME_Relative refund_deadline;

  /**
   * Set (by the interpreter) to a fresh private key.  This
   * key will be used to sign the deposit request.
   */
  struct TALER_MerchantPrivateKeyP merchant_priv;

  /**
   * Deposit handle while operation is running.
   */
  struct TALER_EXCHANGE_DepositHandle *dh;

  /**
   * Expected HTTP response code.
   */
  unsigned int expected_response_code;

  /**
   * Interpreter state.
   */
  struct TALER_TESTING_Interpreter *is;

  /**
   * Exchange connection.
   */
  struct TALER_EXCHANGE_Handle *exchange;
};

/**
 * Callback to analyze the /deposit response, just used to
 * check if the response code is acceptable.
 *
 * @param cls closure.
 * @param http_status HTTP response code.
 * @param ec taler-specific error code.
 * @param exchange_pub public key of the exchange,
 *        used for signing the response.
 * @param obj raw response from the exchange.
 */
static void
deposit_cb (void *cls,
            unsigned int http_status,
            enum TALER_ErrorCode ec,
            const struct TALER_ExchangePublicKeyP *exchange_pub,
            const json_t *obj)
{
  struct DepositState *ds = cls;

  ds->dh = NULL;
  if (ds->expected_response_code != http_status)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Unexpected response code %u to command %s\n",
                http_status,
                ds->is->commands[ds->is->ip].label);
    json_dumpf (obj, stderr, 0);
    TALER_TESTING_interpreter_fail (ds->is);
    return;
  }
  TALER_TESTING_interpreter_next (ds->is);
}


/**
 * Run the command.
 *
 * @param cls closure.
 * @param cmd the command to execute.
 * @param is the interpreter state.
 */
static void
deposit_run (void *cls,
             const struct TALER_TESTING_Command *cmd,
             struct TALER_TESTING_Interpreter *is)
{
  struct DepositState *ds = cls;
  const struct TALER_TESTING_Command *coin_cmd;
  struct TALER_TESTING_Command *this_cmd;
  struct TALER_CoinSpendPrivateKeyP *coin_priv;
  struct TALER_CoinSpendPublicKeyP coin_pub;
  const struct TALER_EXCHANGE_DenomPublicKey *denom_pub;
  struct TALER_DenominationSignature *denom_pub_sig;
  struct TALER_CoinSpendSignatureP coin_sig;
  struct GNUNET_TIME_Absolute refund_deadline;
  struct GNUNET_TIME_Absolute wire_deadline;
  struct GNUNET_TIME_Absolute timestamp;
  struct GNUNET_CRYPTO_EddsaPrivateKey *merchant_priv;
  struct TALER_MerchantPublicKeyP merchant_pub;
  struct GNUNET_HashCode h_contract_terms;
  json_t *contract_terms;
  struct TALER_Amount amount;

  ds->is = is;
  this_cmd = &is->commands[is->ip];

  GNUNET_assert (ds->coin_reference);
  coin_cmd = TALER_TESTING_interpreter_lookup_command
    (is,
     ds->coin_reference);
  if (NULL == coin_cmd)
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }

  /* Fixme: do prefer "interpreter fail" over assertions,
   * as the former takes care of shutting down processes  too */
  GNUNET_assert (NULL != coin_cmd);

  GNUNET_assert (GNUNET_OK
    == TALER_TESTING_get_trait_coin_priv (coin_cmd,
                                          ds->coin_index,
                                          &coin_priv));

  GNUNET_assert (GNUNET_OK
    == TALER_TESTING_get_trait_denom_pub (coin_cmd,
                                          ds->coin_index,
                                          &denom_pub));

  GNUNET_assert (GNUNET_OK
    == TALER_TESTING_get_trait_denom_sig (coin_cmd,
                                          ds->coin_index,
                                          &denom_pub_sig));
  if (GNUNET_OK !=
      TALER_string_to_amount (ds->amount,
                              &amount))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to parse amount `%s' at '%u/%s'\n",
                 ds->amount, is->ip, this_cmd->label);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  contract_terms = json_loads (ds->contract_terms,
                               JSON_REJECT_DUPLICATES,
                               NULL);
  if (NULL == contract_terms)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to parse proposal data `%s' at %u/%s\n",
                ds->contract_terms, is->ip, this_cmd->label);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  GNUNET_assert (GNUNET_OK ==
                 TALER_JSON_hash (contract_terms,
                                  &h_contract_terms));
  json_decref (contract_terms);
  GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv,
                                      &coin_pub.eddsa_pub);

  merchant_priv = GNUNET_CRYPTO_eddsa_key_create ();
  ds->merchant_priv.eddsa_priv = *merchant_priv;
  GNUNET_free (merchant_priv);

  if (0 != ds->refund_deadline.rel_value_us)
  {
    refund_deadline = GNUNET_TIME_relative_to_absolute
      (ds->refund_deadline);
    wire_deadline = GNUNET_TIME_relative_to_absolute
    (GNUNET_TIME_relative_multiply
      (ds->refund_deadline, 2));
  }
  else
  {
    refund_deadline = GNUNET_TIME_UNIT_ZERO_ABS;
    wire_deadline = GNUNET_TIME_relative_to_absolute
      (GNUNET_TIME_UNIT_ZERO);
  }
  GNUNET_CRYPTO_eddsa_key_get_public
    (&ds->merchant_priv.eddsa_priv,
     &merchant_pub.eddsa_pub);

  timestamp = GNUNET_TIME_absolute_get ();
  GNUNET_TIME_round_abs (&timestamp);
  GNUNET_TIME_round_abs (&refund_deadline);
  GNUNET_TIME_round_abs (&wire_deadline);

  {
    struct TALER_DepositRequestPS dr;

    memset (&dr, 0, sizeof (dr));
    dr.purpose.size = htonl
      (sizeof (struct TALER_DepositRequestPS));
    dr.purpose.purpose = htonl
      (TALER_SIGNATURE_WALLET_COIN_DEPOSIT);
    dr.h_contract_terms = h_contract_terms;
    GNUNET_assert
      (GNUNET_OK ==
       TALER_JSON_wire_signature_hash (ds->wire_details,
                                       &dr.h_wire));
    dr.timestamp = GNUNET_TIME_absolute_hton (timestamp);
    dr.refund_deadline = GNUNET_TIME_absolute_hton
      (refund_deadline);
    TALER_amount_hton (&dr.amount_with_fee, &amount);
    TALER_amount_hton
      (&dr.deposit_fee, &denom_pub->fee_deposit);
    dr.merchant = merchant_pub;
    dr.coin_pub = coin_pub;
    GNUNET_assert (GNUNET_OK == GNUNET_CRYPTO_eddsa_sign
      (&coin_priv->eddsa_priv,
       &dr.purpose,
       &coin_sig.eddsa_signature));
  }
  ds->dh = TALER_EXCHANGE_deposit
    (ds->exchange,
     &amount,
     wire_deadline,
     ds->wire_details,
     &h_contract_terms,
     &coin_pub,
     denom_pub_sig,
     &denom_pub->key,
     timestamp,
     &merchant_pub,
     refund_deadline,
     &coin_sig,
     &deposit_cb,
     ds);

  if (NULL == ds->dh)
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  return;
}


/**
 * Free the state of a "deposit" CMD, and possibly cancel a
 * pending operation thereof.
 *
 * @param cls closure, typically a #struct WireState.
 * @param cmd the command which is being cleaned up.
 */
static void
deposit_cleanup (void *cls,
                 const struct TALER_TESTING_Command *cmd)
{
  struct DepositState *ds = cls;

  if (NULL != ds->dh)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Command %u (%s) did not complete\n",
                ds->is->ip,
                cmd->label);
    TALER_EXCHANGE_deposit_cancel (ds->dh);
    ds->dh = NULL;
  }

  json_decref (ds->wire_details);
  GNUNET_free (ds);
}


/**
 * Offer internal data from a "deposit" CMD, to other commands.
 *
 * @param cls closure.
 * @param ret[out] result.
 * @param trait name of the trait.
 * @param index index number of the object to offer.
 *
 * @return #GNUNET_OK on success.
 */
static int
deposit_traits (void *cls,
                void **ret,
                const char *trait,
                unsigned int index)
{
  struct DepositState *ds = cls;
  const struct TALER_TESTING_Command *coin_cmd;
  /* Will point to coin cmd internals. */
  struct TALER_CoinSpendPrivateKeyP *coin_spent_priv;

  coin_cmd = TALER_TESTING_interpreter_lookup_command
    (ds->is, ds->coin_reference);

  if (NULL == coin_cmd)
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (ds->is);
    return GNUNET_NO;
  }

  if (GNUNET_OK != TALER_TESTING_get_trait_coin_priv
    (coin_cmd, ds->coin_index, &coin_spent_priv))
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (ds->is);
    return GNUNET_NO;
  }

  struct TALER_TESTING_Trait traits[] = {
    TALER_TESTING_make_trait_coin_priv (0, coin_spent_priv),
    TALER_TESTING_make_trait_wire_details (0, ds->wire_details),
    TALER_TESTING_make_trait_contract_terms (0, ds->contract_terms),
    TALER_TESTING_make_trait_peer_key
      (0, &ds->merchant_priv.eddsa_priv),
    TALER_TESTING_trait_end ()
  };

  return TALER_TESTING_get_trait (traits,
                                  ret,
                                  trait,
                                  index);
}

/**
 * Create a "deposit" command.
 *
 * @param label command label.
 * @param exchange exchange connection.
 * @param coin_reference reference to any operation that can
 *        provide a coin.
 * @param coin_index if @a withdraw_reference offers an array of
 *        coins, this parameter selects which one in that array.
 *        This value is currently ignored, as only one-coin
 *        withdrawals are implemented.
 * @param wire_details wire details associated with the "deposit"
 *        request.
 * @param contract_terms contract terms to be signed over by the
 *        coin.
 * @param refund_deadline refund deadline, zero means 'no refunds'.
 * @param amount how much is going to be deposited.
 * @param expected_response_code expected HTTP response code.
 *
 * @return the command.
 */
struct TALER_TESTING_Command
TALER_TESTING_cmd_deposit
  (const char *label,
   struct TALER_EXCHANGE_Handle *exchange,
   const char *coin_reference,
   unsigned int coin_index,
   json_t *wire_details,
   const char *contract_terms,
   struct GNUNET_TIME_Relative refund_deadline,
   const char *amount,
   unsigned int expected_response_code)
{
  struct TALER_TESTING_Command cmd;
  struct DepositState *ds;

  ds = GNUNET_new (struct DepositState);
  ds->exchange = exchange;
  ds->coin_reference = coin_reference;
  ds->coin_index = coin_index;
  ds->wire_details = wire_details;
  ds->contract_terms = contract_terms;
  ds->refund_deadline = refund_deadline;
  ds->amount = amount;
  ds->expected_response_code = expected_response_code;

  cmd.cls = ds;
  cmd.label = label;
  cmd.run = &deposit_run;
  cmd.cleanup = &deposit_cleanup;
  cmd.traits = &deposit_traits;

  return cmd;
}