aboutsummaryrefslogtreecommitdiff
path: root/src/testing/testing_api_cmd_purse_create_deposit.c
blob: cf9929465ccc48edc91fa3765e245027903cd14e (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
/*
  This file is part of TALER
  Copyright (C) 2022 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 testing/testing_api_cmd_purse_create_deposit.c
 * @brief command for testing /purses/$PID/create
 * @author Christian Grothoff
 */
#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "taler_testing_lib.h"
#include "taler_signatures.h"
#include "backoff.h"

/**
 * Information we keep per deposited coin.
 */
struct Coin
{
  /**
   * Reference to the respective command.
   */
  char *command_ref;

  /**
   * index of the specific coin in the traits of @e command_ref.
   */
  unsigned int coin_index;

  /**
   * Amount to deposit (with fee).
   */
  struct TALER_Amount deposit_with_fee;

};


/**
 * State for a "purse create deposit" CMD.
 */
struct PurseCreateDepositState
{

  /**
   * Total purse target amount without fees.
   */
  struct TALER_Amount target_amount;

  /**
   * Reference to any command that is able to provide a coin.
   */
  struct Coin *coin_references;

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

  /**
   * Purse expiration time.
   */
  struct GNUNET_TIME_Timestamp purse_expiration;

  /**
   * Relative purse expiration time.
   */
  struct GNUNET_TIME_Relative rel_expiration;

  /**
   * Set (by the interpreter) to a fresh private key.  This
   * key will be used to create the purse.
   */
  struct TALER_PurseContractPrivateKeyP purse_priv;

  /**
   * Set (by the interpreter) to a fresh private key.  This
   * key will be used to merge the purse.
   */
  struct TALER_PurseMergePrivateKeyP merge_priv;

  /**
   * Set (by the interpreter) to a fresh private key.  This
   * key will be used to decrypt the contract.
   */
  struct TALER_ContractDiffiePrivateP contract_priv;

  /**
   * Signing key used by the exchange to sign the
   * deposit confirmation.
   */
  struct TALER_ExchangePublicKeyP exchange_pub;

  /**
   * Signature from the exchange on the
   * deposit confirmation.
   */
  struct TALER_ExchangeSignatureP exchange_sig;

  /**
   * Set (by the interpreter) to a public key corresponding
   * to @e purse_priv.
   */
  struct TALER_PurseContractPublicKeyP purse_pub;

  /**
   * PurseCreateDeposit handle while operation is running.
   */
  struct TALER_EXCHANGE_PurseCreateDepositHandle *dh;

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

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

  /**
   * Length of the @e coin_references array.
   */
  unsigned int num_coin_references;

  /**
   * Should we upload the contract?
   */
  bool upload_contract;

};


/**
 * Callback to analyze the /purses/$PID/create response, just used to check if
 * the response code is acceptable.
 *
 * @param cls closure.
 * @param dr deposit response details
 */
static void
deposit_cb (void *cls,
            const struct TALER_EXCHANGE_PurseCreateDepositResponse *dr)
{
  struct PurseCreateDepositState *ds = cls;

  ds->dh = NULL;
  if (ds->expected_response_code != dr->hr.http_status)
  {
    TALER_TESTING_unexpected_status (ds->is,
                                     dr->hr.http_status,
                                     ds->expected_response_code);
    return;
  }
  if (MHD_HTTP_OK == dr->hr.http_status)
  {
    ds->exchange_pub = dr->details.ok.exchange_pub;
    ds->exchange_sig = dr->details.ok.exchange_sig;
  }
  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 PurseCreateDepositState *ds = cls;
  struct TALER_EXCHANGE_PurseDeposit deposits[ds->num_coin_references];

  (void) cmd;
  ds->is = is;
  for (unsigned int i = 0; i<ds->num_coin_references; i++)
  {
    const struct Coin *cr = &ds->coin_references[i];
    struct TALER_EXCHANGE_PurseDeposit *pd = &deposits[i];
    const struct TALER_TESTING_Command *coin_cmd;
    const struct TALER_CoinSpendPrivateKeyP *coin_priv;
    const struct TALER_AgeCommitmentProof *age_commitment_proof = NULL;
    const struct TALER_EXCHANGE_DenomPublicKey *denom_pub;
    const struct TALER_DenominationSignature *denom_pub_sig;

    coin_cmd = TALER_TESTING_interpreter_lookup_command (is,
                                                         cr->command_ref);
    if (NULL == coin_cmd)
    {
      GNUNET_break (0);
      TALER_TESTING_interpreter_fail (is);
      return;
    }

    if ( (GNUNET_OK !=
          TALER_TESTING_get_trait_coin_priv (coin_cmd,
                                             cr->coin_index,
                                             &coin_priv)) ||
         (GNUNET_OK !=
          TALER_TESTING_get_trait_age_commitment_proof (coin_cmd,
                                                        cr->coin_index,
                                                        &age_commitment_proof))
         ||
         (GNUNET_OK !=
          TALER_TESTING_get_trait_denom_pub (coin_cmd,
                                             cr->coin_index,
                                             &denom_pub)) ||
         (GNUNET_OK !=
          TALER_TESTING_get_trait_denom_sig (coin_cmd,
                                             cr->coin_index,
                                             &denom_pub_sig)) )
    {
      GNUNET_break (0);
      TALER_TESTING_interpreter_fail (is);
      return;
    }
    pd->age_commitment_proof = age_commitment_proof;
    pd->denom_sig = *denom_pub_sig;
    pd->coin_priv = *coin_priv;
    pd->amount = cr->deposit_with_fee;
    pd->h_denom_pub = denom_pub->h_key;
  }

  GNUNET_CRYPTO_eddsa_key_create (&ds->purse_priv.eddsa_priv);
  GNUNET_CRYPTO_eddsa_key_create (&ds->merge_priv.eddsa_priv);
  GNUNET_CRYPTO_ecdhe_key_create (&ds->contract_priv.ecdhe_priv);
  GNUNET_CRYPTO_eddsa_key_get_public (&ds->purse_priv.eddsa_priv,
                                      &ds->purse_pub.eddsa_pub);

  ds->purse_expiration =
    GNUNET_TIME_absolute_to_timestamp (
      GNUNET_TIME_relative_to_absolute (ds->rel_expiration));
  GNUNET_assert (0 ==
                 json_object_set_new (
                   ds->contract_terms,
                   "pay_deadline",
                   GNUNET_JSON_from_timestamp (ds->purse_expiration)));
  ds->dh = TALER_EXCHANGE_purse_create_with_deposit (
    TALER_TESTING_interpreter_get_context (is),
    TALER_TESTING_get_exchange_url (is),
    TALER_TESTING_get_keys (is),
    &ds->purse_priv,
    &ds->merge_priv,
    &ds->contract_priv,
    ds->contract_terms,
    ds->num_coin_references,
    deposits,
    ds->upload_contract,
    &deposit_cb,
    ds);
  if (NULL == ds->dh)
  {
    GNUNET_break (0);
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Could not create purse with deposit\n");
    TALER_TESTING_interpreter_fail (is);
    return;
  }
}


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

  if (NULL != ds->dh)
  {
    TALER_TESTING_command_incomplete (ds->is,
                                      cmd->label);
    TALER_EXCHANGE_purse_create_with_deposit_cancel (ds->dh);
    ds->dh = NULL;
  }
  for (unsigned int i = 0; i<ds->num_coin_references; i++)
    GNUNET_free (ds->coin_references[i].command_ref);
  json_decref (ds->contract_terms);
  GNUNET_free (ds->coin_references);
  GNUNET_free (ds);
}


/**
 * Offer internal data from a "deposit" CMD, to other commands.
 *
 * @param cls closure.
 * @param[out] ret result.
 * @param trait name of the trait.
 * @param index index number of the object to offer.
 * @return #GNUNET_OK on success.
 */
static enum GNUNET_GenericReturnValue
deposit_traits (void *cls,
                const void **ret,
                const char *trait,
                unsigned int index)
{
  struct PurseCreateDepositState *ds = cls;
  struct TALER_TESTING_Trait traits[] = {
    TALER_TESTING_make_trait_merge_priv (&ds->merge_priv),
    TALER_TESTING_make_trait_contract_priv (&ds->contract_priv),
    TALER_TESTING_make_trait_purse_priv (&ds->purse_priv),
    TALER_TESTING_make_trait_purse_pub (&ds->purse_pub),
    TALER_TESTING_make_trait_contract_terms (ds->contract_terms),
    TALER_TESTING_make_trait_deposit_amount (0,
                                             &ds->target_amount),
    TALER_TESTING_make_trait_timestamp (index,
                                        &ds->purse_expiration),
    TALER_TESTING_trait_end ()
  };

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


struct TALER_TESTING_Command
TALER_TESTING_cmd_purse_create_with_deposit (
  const char *label,
  unsigned int expected_http_status,
  const char *contract_terms,
  bool upload_contract,
  struct GNUNET_TIME_Relative purse_expiration,
  ...)
{
  struct PurseCreateDepositState *ds;

  ds = GNUNET_new (struct PurseCreateDepositState);
  ds->rel_expiration = purse_expiration;
  ds->upload_contract = upload_contract;
  ds->expected_response_code = expected_http_status;
  ds->contract_terms = json_loads (contract_terms,
                                   JSON_REJECT_DUPLICATES,
                                   NULL);
  if (NULL == ds->contract_terms)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to parse contract terms `%s' for CMD `%s'\n",
                contract_terms,
                label);
    GNUNET_assert (0);
  }
  {
    va_list ap;
    unsigned int i;
    const char *ref;
    const char *val;

    va_start (ap, purse_expiration);
    while (NULL != (va_arg (ap, const char *)))
      ds->num_coin_references++;
    va_end (ap);
    GNUNET_assert (0 == (ds->num_coin_references % 2));
    ds->num_coin_references /= 2;
    ds->coin_references = GNUNET_new_array (ds->num_coin_references,
                                            struct Coin);
    i = 0;
    va_start (ap, purse_expiration);
    while (NULL != (ref = va_arg (ap, const char *)))
    {
      struct Coin *c = &ds->coin_references[i++];

      GNUNET_assert (NULL != (val = va_arg (ap, const char *)));
      GNUNET_assert (GNUNET_OK ==
                     TALER_TESTING_parse_coin_reference (
                       ref,
                       &c->command_ref,
                       &c->coin_index));
      GNUNET_assert (GNUNET_OK ==
                     TALER_string_to_amount (val,
                                             &c->deposit_with_fee));
    }
    va_end (ap);
  }
  {
    struct TALER_TESTING_Command cmd = {
      .cls = ds,
      .label = label,
      .run = &deposit_run,
      .cleanup = &deposit_cleanup,
      .traits = &deposit_traits
    };

    return cmd;
  }
}


/* end of testing_api_cmd_purse_create_deposit.c */