aboutsummaryrefslogtreecommitdiff
path: root/src/testing/testing_api_cmd_refund.c
blob: 29b68ef0814fed31b71a0fa9d8573defe291df3a (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
/*
  This file is part of TALER
  Copyright (C) 2014-2023 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_refund.c
 * @brief Implement the /refund test command, plus other
 *        corollary commands (?).
 * @author Marcello Stanisci
 */
#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "taler_testing_lib.h"


/**
 * State for a "refund" CMD.
 */
struct RefundState
{
  /**
   * Expected HTTP response code.
   */
  unsigned int expected_response_code;

  /**
   * Amount to be refunded.
   */
  const char *refund_amount;

  /**
   * Reference to any command that can provide a coin to refund.
   */
  const char *coin_reference;

  /**
   * Refund transaction identifier.
   */
  uint64_t refund_transaction_id;

  /**
   * Entry in the coin's history generated by this operation.
   */
  struct TALER_EXCHANGE_CoinHistoryEntry che;

  /**
   * Public key of the refunded coin.
   */
  struct TALER_CoinSpendPublicKeyP coin;

  /**
   * Handle to the refund operation.
   */
  struct TALER_EXCHANGE_RefundHandle *rh;

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


/**
 * Check the result for the refund request, just check if the
 * response code is acceptable.
 *
 * @param cls closure
 * @param rr response details
 */
static void
refund_cb (void *cls,
           const struct TALER_EXCHANGE_RefundResponse *rr)
{
  struct RefundState *rs = cls;
  const struct TALER_EXCHANGE_HttpResponse *hr = &rr->hr;

  rs->rh = NULL;
  if (rs->expected_response_code != hr->http_status)
  {
    TALER_TESTING_unexpected_status (rs->is,
                                     hr->http_status,
                                     rs->expected_response_code);
    return;
  }
  if (MHD_HTTP_OK == hr->http_status)
  {
    struct TALER_Amount refund_amount;

    if (GNUNET_OK !=
        TALER_string_to_amount (rs->refund_amount,
                                &refund_amount))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                  "Failed to parse amount `%s'\n",
                  rs->refund_amount);
      TALER_TESTING_interpreter_fail (rs->is);
      return;
    }
    if (0 >
        TALER_amount_subtract (&rs->che.amount,
                               &refund_amount,
                               &rs->che.details.refund.refund_fee))
    {
      GNUNET_break (0);
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                  "Failed to subtract %s from %s\n",
                  TALER_amount2s (&rs->che.details.refund.refund_fee),
                  rs->refund_amount);
      TALER_TESTING_interpreter_fail (rs->is);
      return;
    }
  }
  TALER_TESTING_interpreter_next (rs->is);
}


/**
 * Run the command.
 *
 * @param cls closure.
 * @param cmd the command to execute.
 * @param is the interpreter state.
 */
static void
refund_run (void *cls,
            const struct TALER_TESTING_Command *cmd,
            struct TALER_TESTING_Interpreter *is)
{
  struct RefundState *rs = cls;
  const struct TALER_CoinSpendPrivateKeyP *coin_priv;
  const json_t *contract_terms;
  struct TALER_PrivateContractHashP h_contract_terms;
  struct TALER_Amount refund_amount;
  const struct TALER_MerchantPrivateKeyP *merchant_priv;
  const struct TALER_TESTING_Command *coin_cmd;
  const struct TALER_EXCHANGE_DenomPublicKey *denom_pub;

  rs->is = is;
  if (GNUNET_OK !=
      TALER_string_to_amount (rs->refund_amount,
                              &refund_amount))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to parse amount `%s' at %s\n",
                rs->refund_amount,
                cmd->label);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  coin_cmd = TALER_TESTING_interpreter_lookup_command (is,
                                                       rs->coin_reference);
  if (NULL == coin_cmd)
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  if (GNUNET_OK !=
      TALER_TESTING_get_trait_contract_terms (coin_cmd,
                                              &contract_terms))
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  GNUNET_assert (GNUNET_OK ==
                 TALER_JSON_contract_hash (contract_terms,
                                           &h_contract_terms));

  /* Hunting for a coin .. */
  if ( (GNUNET_OK !=
        TALER_TESTING_get_trait_coin_priv (coin_cmd,
                                           0,
                                           &coin_priv)) ||
       (GNUNET_OK !=
        TALER_TESTING_get_trait_denom_pub (coin_cmd,
                                           0,
                                           &denom_pub)) )

  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }

  GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv,
                                      &rs->coin.eddsa_pub);
  if (GNUNET_OK !=
      TALER_TESTING_get_trait_merchant_priv (coin_cmd,
                                             &merchant_priv))
  {
    GNUNET_break (0);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  rs->che.type = TALER_EXCHANGE_CTT_REFUND;
  rs->che.details.refund.h_contract_terms = h_contract_terms;
  GNUNET_CRYPTO_eddsa_key_get_public (
    &merchant_priv->eddsa_priv,
    &rs->che.details.refund.merchant_pub.eddsa_pub);
  rs->che.details.refund.refund_fee = denom_pub->fees.refund;
  rs->che.details.refund.sig_amount = refund_amount;
  rs->che.details.refund.rtransaction_id = rs->refund_transaction_id;
  TALER_merchant_refund_sign (&rs->coin,
                              &h_contract_terms,
                              rs->refund_transaction_id,
                              &refund_amount,
                              merchant_priv,
                              &rs->che.details.refund.sig);
  rs->rh = TALER_EXCHANGE_refund (
    TALER_TESTING_interpreter_get_context (is),
    TALER_TESTING_get_exchange_url (is),
    TALER_TESTING_get_keys (is),
    &refund_amount,
    &h_contract_terms,
    &rs->coin,
    rs->refund_transaction_id,
    merchant_priv,
    &refund_cb,
    rs);
  GNUNET_assert (NULL != rs->rh);
}


/**
 * Offer internal data from a "refund" 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
refund_traits (void *cls,
               const void **ret,
               const char *trait,
               unsigned int index)
{
  struct RefundState *rs = cls;
  struct TALER_TESTING_Trait traits[] = {
    TALER_TESTING_make_trait_coin_history (0,
                                           &rs->che),
    TALER_TESTING_make_trait_coin_pub (0,
                                       &rs->coin),
    TALER_TESTING_trait_end ()
  };

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


/**
 * Free the state from a "refund" CMD, and possibly cancel
 * a pending operation thereof.
 *
 * @param cls closure.
 * @param cmd the command which is being cleaned up.
 */
static void
refund_cleanup (void *cls,
                const struct TALER_TESTING_Command *cmd)
{
  struct RefundState *rs = cls;

  if (NULL != rs->rh)
  {
    TALER_TESTING_command_incomplete (rs->is,
                                      cmd->label);
    TALER_EXCHANGE_refund_cancel (rs->rh);
    rs->rh = NULL;
  }
  GNUNET_free (rs);
}


struct TALER_TESTING_Command
TALER_TESTING_cmd_refund (const char *label,
                          unsigned int expected_response_code,
                          const char *refund_amount,
                          const char *coin_reference)
{
  struct RefundState *rs;

  rs = GNUNET_new (struct RefundState);
  rs->expected_response_code = expected_response_code;
  rs->refund_amount = refund_amount;
  rs->coin_reference = coin_reference;
  {
    struct TALER_TESTING_Command cmd = {
      .cls = rs,
      .label = label,
      .run = &refund_run,
      .cleanup = &refund_cleanup,
      .traits = &refund_traits
    };

    return cmd;
  }
}


struct TALER_TESTING_Command
TALER_TESTING_cmd_refund_with_id (
  const char *label,
  unsigned int expected_response_code,
  const char *refund_amount,
  const char *coin_reference,
  uint64_t refund_transaction_id)
{
  struct RefundState *rs;

  rs = GNUNET_new (struct RefundState);
  rs->expected_response_code = expected_response_code;
  rs->refund_amount = refund_amount;
  rs->coin_reference = coin_reference;
  rs->refund_transaction_id = refund_transaction_id;
  {
    struct TALER_TESTING_Command cmd = {
      .cls = rs,
      .label = label,
      .run = &refund_run,
      .cleanup = &refund_cleanup,
      .traits = &refund_traits
    };

    return cmd;
  }
}