exchange

commit e26d0c1c289ecce245b5652dd1d8931ba8dee70d
parent 63a4bf4d691304daf9586023e24412701d869a6f
Author: Özgür Kesim <oec@codeblau.de>
Date:   Wed,  7 May 2025 10:27:15 +0200

[testing] added support for idempotent withdrawal in the CS case

Diffstat:
M
src/include/taler_testing_lib.h
 | 
30
++++++++++++++++++++++++++++++
M
src/testing/test_exchange_api_age_restriction.c
 | 
4
++--
M
src/testing/testing_api_cmd_withdraw.c
 | 
36
++++++++++++++++++++++++++++++++++++

3 files changed, 68 insertions(+), 2 deletions(-)
diff --git a/src/include/taler_testing_lib.h b/src/include/taler_testing_lib.h
@@ -1188,6 +1188,9 @@ TALER_TESTING_cmd_withdraw_reveal_age_proof (
  * coin private key in the process (violating the specification,
  * which will result in an error when spending the coin!).
  *
+ * Note that in case of CS denominations, the blinding seed
+ * will still differ!
+ *
  * @param label command label.
  * @param reserve_reference command providing us with a reserve to withdraw from
  * @param amount how much we withdraw.
@@ -1209,6 +1212,33 @@ TALER_TESTING_cmd_withdraw_amount_reuse_key (
 
 
 /**
+ * Create a withdraw command, letting the caller specify
+ * the desired amount as string and also reusing an existing
+ * coin private key _and_ blinding seed in the process
+ * (violating the specification, which will result in an error
+ * when spending the coin!).
+ *
+ * @param label command label.
+ * @param reserve_reference command providing us with a reserve to withdraw from
+ * @param amount how much we withdraw.
+ * @param age if > 0, age restriction applies.
+ * @param coin_ref reference to (withdraw/reveal) command of a coin
+ *        from which we should reuse the private key
+ * @param expected_response_code which HTTP response code
+ *        we expect from the exchange.
+ * @return the withdraw command to be executed by the interpreter.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_withdraw_amount_reuse_all_secrets (
+  const char *label,
+  const char *reserve_reference,
+  const char *amount,
+  uint8_t age,
+  const char *coin_ref,
+  unsigned int expected_response_code);
+
+
+/**
  * Create withdraw command, letting the caller specify the
  * amount by a denomination key.
  *
diff --git a/src/testing/test_exchange_api_age_restriction.c b/src/testing/test_exchange_api_age_restriction.c
@@ -137,9 +137,9 @@ run (void *cls,
       13,
       MHD_HTTP_OK),
     /**
-     * Idempotent withdrawal
+     * Idempotent withdrawal.
      */
-    TALER_TESTING_cmd_withdraw_amount_reuse_key (
+    TALER_TESTING_cmd_withdraw_amount_reuse_all_secrets (
       "withdraw-coin-age-idem-1",
       "create-reserve-age",
       "EUR:5",
diff --git a/src/testing/testing_api_cmd_withdraw.c b/src/testing/testing_api_cmd_withdraw.c
@@ -68,6 +68,12 @@ struct WithdrawState
   const char *reuse_coin_key_ref;
 
   /**
+   * If true and @e reuse_coin_key_ref is not NULL, also reuses
+   * the blinding_seed.
+   */
+  bool reuse_blinding_seed;
+
+  /**
    * Our command.
    */
   const struct TALER_TESTING_Command *cmd;
@@ -433,6 +439,10 @@ withdraw_run (void *cls,
                    TALER_TESTING_get_trait_withdraw_seed (cref,
                                                           &seed));
     ws->seed = *seed;
+
+    if (ws->reuse_blinding_seed)
+      TALER_cs_withdraw_seed_to_blinding_seed (&ws->seed,
+                                               &ws->blinding_seed);
   }
 
   if (NULL == ws->pk)
@@ -652,6 +662,32 @@ TALER_TESTING_cmd_withdraw_amount_reuse_key (
 
 
 struct TALER_TESTING_Command
+TALER_TESTING_cmd_withdraw_amount_reuse_all_secrets (
+  const char *label,
+  const char *reserve_reference,
+  const char *amount,
+  uint8_t age,
+  const char *coin_ref,
+  unsigned int expected_response_code)
+{
+  struct TALER_TESTING_Command cmd;
+
+  cmd = TALER_TESTING_cmd_withdraw_amount (label,
+                                           reserve_reference,
+                                           amount,
+                                           age,
+                                           expected_response_code);
+  {
+    struct WithdrawState *ws = cmd.cls;
+
+    ws->reuse_coin_key_ref = coin_ref;
+    ws->reuse_blinding_seed = true;
+  }
+  return cmd;
+}
+
+
+struct TALER_TESTING_Command
 TALER_TESTING_cmd_withdraw_denomination (
   const char *label,
   const char *reserve_reference,