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[taler-exchange] branch master updated: make recoup idempotent and simpl
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From: |
gnunet |
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Subject: |
[taler-exchange] branch master updated: make recoup idempotent and simplify response |
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Date: |
Fri, 20 Mar 2020 09:32:04 +0100 |
This is an automated email from the git hooks/post-receive script.
dold pushed a commit to branch master
in repository exchange.
The following commit(s) were added to refs/heads/master by this push:
new 6a46b13e make recoup idempotent and simplify response
6a46b13e is described below
commit 6a46b13e80659cbc9917b46f74d21b4f4aaf6c3b
Author: Florian Dold <address@hidden>
AuthorDate: Fri Mar 20 14:01:59 2020 +0530
make recoup idempotent and simplify response
---
src/exchange/taler-exchange-httpd_recoup.c | 140 +++++++++++------------------
src/include/taler_exchange_service.h | 2 -
src/include/taler_testing_lib.h | 2 -
src/lib/exchange_api_recoup.c | 89 ++++--------------
src/testing/test_auditor_api.c | 2 -
src/testing/test_exchange_api.c | 3 -
src/testing/test_exchange_api_revocation.c | 16 ++--
src/testing/testing_api_cmd_recoup.c | 35 +-------
8 files changed, 76 insertions(+), 213 deletions(-)
diff --git a/src/exchange/taler-exchange-httpd_recoup.c
b/src/exchange/taler-exchange-httpd_recoup.c
index de9c13a6..53565524 100644
--- a/src/exchange/taler-exchange-httpd_recoup.c
+++ b/src/exchange/taler-exchange-httpd_recoup.c
@@ -34,112 +34,46 @@
/**
- * A wallet asked for /recoup, return the successful response.
+ * A wallet asked for /recoup (refresh variant), return the successful
+ * response.
*
* @param connection connection to the client
- * @param coin_pub coin for which we are processing the recoup request
* @param old_coin_pub public key of the old coin that will receive the recoup
- * @param amount the amount we will wire back
- * @param timestamp when did the exchange receive the /recoup request
* @return MHD result code
*/
static int
reply_recoup_refresh_success (struct MHD_Connection *connection,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
const struct
- TALER_CoinSpendPublicKeyP *old_coin_pub,
- const struct TALER_Amount *amount,
- struct GNUNET_TIME_Absolute timestamp)
+ TALER_CoinSpendPublicKeyP *old_coin_pub)
{
- struct TALER_RecoupRefreshConfirmationPS pc;
- struct TALER_ExchangePublicKeyP pub;
- struct TALER_ExchangeSignatureP sig;
-
- pc.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP_REFRESH);
- pc.purpose.size = htonl (sizeof (struct TALER_RecoupRefreshConfirmationPS));
- pc.timestamp = GNUNET_TIME_absolute_hton (timestamp);
- TALER_amount_hton (&pc.recoup_amount,
- amount);
- pc.coin_pub = *coin_pub;
- pc.old_coin_pub = *old_coin_pub;
- if (GNUNET_OK !=
- TEH_KS_sign (&pc.purpose,
- &pub,
- &sig))
- {
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_INTERNAL_SERVER_ERROR,
- TALER_EC_EXCHANGE_BAD_CONFIGURATION,
- "no keys");
- }
return TALER_MHD_reply_json_pack (connection,
MHD_HTTP_OK,
- "{s:o, s:o, s:o, s:o, s:o}",
+ "{s:o, s:b}",
"old_coin_pub",
GNUNET_JSON_from_data_auto (
old_coin_pub),
- "timestamp", GNUNET_JSON_from_time_abs (
- timestamp),
- "amount", TALER_JSON_from_amount (
- amount),
- "exchange_sig",
- GNUNET_JSON_from_data_auto (&sig),
- "exchange_pub",
- GNUNET_JSON_from_data_auto (&pub));
+ "refreshed", 1);
}
/**
- * A wallet asked for /recoup, return the successful response.
+ * A wallet asked for /recoup (withdraw variant), return the successful
+ * response.
*
* @param connection connection to the client
- * @param coin_pub coin for which we are processing the recoup request
* @param reserve_pub public key of the reserve that will receive the recoup
- * @param amount the amount we will wire back
- * @param timestamp when did the exchange receive the /recoup request
* @return MHD result code
*/
static int
reply_recoup_success (struct MHD_Connection *connection,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_ReservePublicKeyP *reserve_pub,
- const struct TALER_Amount *amount,
- struct GNUNET_TIME_Absolute timestamp)
+ const struct TALER_ReservePublicKeyP *reserve_pub)
{
- struct TALER_RecoupConfirmationPS pc;
- struct TALER_ExchangePublicKeyP pub;
- struct TALER_ExchangeSignatureP sig;
-
- pc.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP);
- pc.purpose.size = htonl (sizeof (struct TALER_RecoupConfirmationPS));
- pc.timestamp = GNUNET_TIME_absolute_hton (timestamp);
- TALER_amount_hton (&pc.recoup_amount,
- amount);
- pc.coin_pub = *coin_pub;
- pc.reserve_pub = *reserve_pub;
- if (GNUNET_OK !=
- TEH_KS_sign (&pc.purpose,
- &pub,
- &sig))
- {
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_INTERNAL_SERVER_ERROR,
- TALER_EC_EXCHANGE_BAD_CONFIGURATION,
- "no keys");
- }
return TALER_MHD_reply_json_pack (connection,
MHD_HTTP_OK,
- "{s:o, s:o, s:o, s:o, s:o}",
+ "{s:o, s:b}",
"reserve_pub",
GNUNET_JSON_from_data_auto (reserve_pub),
- "timestamp", GNUNET_JSON_from_time_abs (
- timestamp),
- "amount", TALER_JSON_from_amount (
- amount),
- "exchange_sig",
- GNUNET_JSON_from_data_auto (&sig),
- "exchange_pub",
- GNUNET_JSON_from_data_auto (&pub));
+ "refreshed", 0);
}
@@ -234,7 +168,9 @@ recoup_transaction (void *cls,
struct RecoupContext *pc = cls;
struct TALER_EXCHANGEDB_TransactionList *tl;
struct TALER_Amount spent;
+ struct TALER_Amount recouped;
enum GNUNET_DB_QueryStatus qs;
+ int existing_recoup_found = GNUNET_NO;
/* Check whether a recoup is allowed, and if so, to which
reserve / account the money should go */
@@ -310,6 +246,21 @@ recoup_transaction (void *cls,
GNUNET_assert (GNUNET_OK ==
TALER_amount_get_zero (pc->value.currency,
&spent));
+ GNUNET_assert (GNUNET_OK ==
+ TALER_amount_get_zero (pc->value.currency,
+ &recouped));
+ /* Check if this coin has been recouped already at least once */
+ for (struct TALER_EXCHANGEDB_TransactionList *pos = tl;
+ NULL != pos;
+ pos = pos->next)
+ {
+ if ( (TALER_EXCHANGEDB_TT_RECOUP == pos->type) ||
+ (TALER_EXCHANGEDB_TT_RECOUP_REFRESH == pos->type) )
+ {
+ existing_recoup_found = GNUNET_YES;
+ break;
+ }
+ }
if (GNUNET_OK !=
TALER_EXCHANGEDB_calculate_transaction_list_totals (tl,
&spent,
@@ -324,6 +275,12 @@ recoup_transaction (void *cls,
"failed to calculate old coin
transaction history");
return GNUNET_DB_STATUS_HARD_ERROR;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Recoup: calculated spent %s\n",
+ TALER_amount2s (&spent));
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Recoup: coin value %s\n",
+ TALER_amount2s (&pc->value));
if (GNUNET_SYSERR ==
TALER_amount_subtract (&pc->amount,
&pc->value,
@@ -341,15 +298,26 @@ recoup_transaction (void *cls,
if ( (0 == pc->amount.fraction) &&
(0 == pc->amount.value) )
{
+ int ret;
TEH_plugin->rollback (TEH_plugin->cls,
session);
- *mhd_ret = TEH_RESPONSE_reply_coin_insufficient_funds (connection,
-
TALER_EC_RECOUP_COIN_BALANCE_ZERO,
- &pc->coin->coin_pub,
- tl);
+ if (GNUNET_NO == existing_recoup_found)
+ {
+ *mhd_ret = TEH_RESPONSE_reply_coin_insufficient_funds (connection,
+
TALER_EC_RECOUP_COIN_BALANCE_ZERO,
+
&pc->coin->coin_pub,
+ tl);
+ ret = GNUNET_DB_STATUS_HARD_ERROR;
+ }
+ else
+ {
+ /* We didn't add any new recoup transaction, but there was at least
+ one recoup before, so we give a success response. */
+ ret = GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
+ }
TEH_plugin->free_coin_transaction_list (TEH_plugin->cls,
tl);
- return GNUNET_DB_STATUS_HARD_ERROR;
+ return ret;
}
TEH_plugin->free_coin_transaction_list (TEH_plugin->cls,
tl);
@@ -548,15 +516,9 @@ verify_and_execute_recoup (struct MHD_Connection
*connection,
}
return (refreshed)
? reply_recoup_refresh_success (connection,
- &coin->coin_pub,
- &pc.target.old_coin_pub,
- &pc.amount,
- pc.now)
+ &pc.target.old_coin_pub)
: reply_recoup_success (connection,
- &coin->coin_pub,
- &pc.target.reserve_pub,
- &pc.amount,
- pc.now);
+ &pc.target.reserve_pub);
}
diff --git a/src/include/taler_exchange_service.h
b/src/include/taler_exchange_service.h
index f90cdd4a..928a808a 100644
--- a/src/include/taler_exchange_service.h
+++ b/src/include/taler_exchange_service.h
@@ -1757,8 +1757,6 @@ typedef void
void *cls,
unsigned int http_status,
enum TALER_ErrorCode ec,
- const struct TALER_Amount *amount,
- struct GNUNET_TIME_Absolute timestamp,
const struct TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_CoinSpendPublicKeyP *old_coin_pub,
const json_t *full_response);
diff --git a/src/include/taler_testing_lib.h b/src/include/taler_testing_lib.h
index 9e32d72e..6066aa5e 100644
--- a/src/include/taler_testing_lib.h
+++ b/src/include/taler_testing_lib.h
@@ -1611,7 +1611,6 @@ TALER_TESTING_cmd_refund (const char *label,
* offers a coin and reserve private key. May specify
* the index of the coin using "$LABEL#$INDEX" syntax.
* Here, $INDEX must be a non-negative number.
- * @param amount denomination to pay back.
* @param melt_reference NULL if coin was not refreshed, otherwise label of
the melt operation
* @return the command.
*/
@@ -1619,7 +1618,6 @@ struct TALER_TESTING_Command
TALER_TESTING_cmd_recoup (const char *label,
unsigned int expected_response_code,
const char *coin_reference,
- const char *amount,
const char *melt_reference);
diff --git a/src/lib/exchange_api_recoup.c b/src/lib/exchange_api_recoup.c
index 54bcab09..a3416b5b 100644
--- a/src/lib/exchange_api_recoup.c
+++ b/src/lib/exchange_api_recoup.c
@@ -88,9 +88,7 @@ struct TALER_EXCHANGE_RecoupHandle
/**
- * Verify that the signature on the "200 OK" response
- * from the exchange is valid. If it is, call the
- * callback.
+ * Parse a recoup response. If it is valid, call the callback.
*
* @param ph recoup handle
* @param json json reply with the signature
@@ -98,30 +96,20 @@ struct TALER_EXCHANGE_RecoupHandle
* #GNUNET_SYSERR if not (callback must still be called)
*/
static int
-verify_recoup_signature_ok (const struct TALER_EXCHANGE_RecoupHandle *ph,
- const json_t *json)
+process_recoup_response (const struct TALER_EXCHANGE_RecoupHandle *ph,
+ const json_t *json)
{
- struct TALER_RecoupConfirmationPS pc;
- struct TALER_RecoupRefreshConfirmationPS pr;
- struct TALER_ExchangePublicKeyP exchange_pub;
- struct TALER_ExchangeSignatureP exchange_sig;
- struct TALER_Amount amount;
- struct GNUNET_TIME_Absolute timestamp;
- const struct TALER_EXCHANGE_Keys *key_state;
+ int refreshed;
+ struct TALER_ReservePublicKeyP reserve_pub;
+ struct TALER_CoinSpendPublicKeyP old_coin_pub;
struct GNUNET_JSON_Specification spec_withdraw[] = {
- GNUNET_JSON_spec_fixed_auto ("exchange_sig", &exchange_sig),
- GNUNET_JSON_spec_fixed_auto ("exchange_pub", &exchange_pub),
- TALER_JSON_spec_amount ("amount", &amount),
- GNUNET_JSON_spec_absolute_time ("timestamp", ×tamp),
- GNUNET_JSON_spec_fixed_auto ("reserve_pub", &pc.reserve_pub),
+ GNUNET_JSON_spec_boolean ("refreshed", &refreshed),
+ GNUNET_JSON_spec_fixed_auto ("reserve_pub", &reserve_pub),
GNUNET_JSON_spec_end ()
};
struct GNUNET_JSON_Specification spec_refresh[] = {
- GNUNET_JSON_spec_fixed_auto ("exchange_sig", &exchange_sig),
- GNUNET_JSON_spec_fixed_auto ("exchange_pub", &exchange_pub),
- TALER_JSON_spec_amount ("amount", &amount),
- GNUNET_JSON_spec_absolute_time ("timestamp", ×tamp),
- GNUNET_JSON_spec_fixed_auto ("old_coin_pub", &pr.old_coin_pub),
+ GNUNET_JSON_spec_boolean ("refreshed", &refreshed),
+ GNUNET_JSON_spec_fixed_auto ("old_coin_pub", &old_coin_pub),
GNUNET_JSON_spec_end ()
};
@@ -133,59 +121,16 @@ verify_recoup_signature_ok (const struct
TALER_EXCHANGE_RecoupHandle *ph,
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
- key_state = TALER_EXCHANGE_get_keys (ph->exchange);
- if (GNUNET_OK !=
- TALER_EXCHANGE_test_signing_key (key_state,
- &exchange_pub))
+ if (ph->was_refreshed != refreshed)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
- if (ph->was_refreshed)
- {
- pr.purpose.purpose = htonl (
- TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP_REFRESH);
- pr.purpose.size = htonl (sizeof (pr));
- pr.timestamp = GNUNET_TIME_absolute_hton (timestamp);
- TALER_amount_hton (&pr.recoup_amount,
- &amount);
- pr.coin_pub = ph->coin_pub;
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (
- TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP_REFRESH,
- &pr.purpose,
- &exchange_sig.eddsa_signature,
- &exchange_pub.eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- }
- else
- {
- pc.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP);
- pc.purpose.size = htonl (sizeof (pc));
- pc.timestamp = GNUNET_TIME_absolute_hton (timestamp);
- TALER_amount_hton (&pc.recoup_amount,
- &amount);
- pc.coin_pub = ph->coin_pub;
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_EXCHANGE_CONFIRM_RECOUP,
- &pc.purpose,
- &exchange_sig.eddsa_signature,
- &exchange_pub.eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- }
ph->cb (ph->cb_cls,
MHD_HTTP_OK,
TALER_EC_NONE,
- &amount,
- timestamp,
- ph->was_refreshed ? NULL : &pc.reserve_pub,
- ph->was_refreshed ? &pr.old_coin_pub : NULL,
+ ph->was_refreshed ? NULL : &reserve_pub,
+ ph->was_refreshed ? &old_coin_pub : NULL,
json);
return GNUNET_OK;
}
@@ -217,8 +162,8 @@ handle_recoup_finished (void *cls,
case MHD_HTTP_OK:
ec = TALER_EC_NONE;
if (GNUNET_OK !=
- verify_recoup_signature_ok (ph,
- j))
+ process_recoup_response (ph,
+ j))
{
GNUNET_break_op (0);
ec = TALER_EC_RECOUP_REPLY_MALFORMED;
@@ -256,8 +201,6 @@ handle_recoup_finished (void *cls,
ph->cb (ph->cb_cls,
response_code,
ec,
- &total,
- GNUNET_TIME_UNIT_FOREVER_ABS,
NULL,
NULL,
j);
@@ -299,8 +242,6 @@ handle_recoup_finished (void *cls,
response_code,
ec,
NULL,
- GNUNET_TIME_UNIT_FOREVER_ABS,
- NULL,
NULL,
j);
TALER_EXCHANGE_recoup_cancel (ph);
diff --git a/src/testing/test_auditor_api.c b/src/testing/test_auditor_api.c
index eea676bd..97934f1d 100644
--- a/src/testing/test_auditor_api.c
+++ b/src/testing/test_auditor_api.c
@@ -409,7 +409,6 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-1",
MHD_HTTP_OK,
"recoup-withdraw-coin-1",
- "EUR:5",
NULL),
/**
* Re-withdraw from this reserve
@@ -469,7 +468,6 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-2",
MHD_HTTP_OK,
"recoup-withdraw-coin-2a",
- "EUR:0.5",
NULL),
TALER_TESTING_cmd_end ()
};
diff --git a/src/testing/test_exchange_api.c b/src/testing/test_exchange_api.c
index 0913688a..e6222330 100644
--- a/src/testing/test_exchange_api.c
+++ b/src/testing/test_exchange_api.c
@@ -587,7 +587,6 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-1",
MHD_HTTP_OK,
"recoup-withdraw-coin-1",
- "EUR:5",
NULL),
/* Check the money is back with the reserve */
TALER_TESTING_cmd_status ("recoup-reserve-status-1",
@@ -682,12 +681,10 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-2",
MHD_HTTP_OK,
"recoup-withdraw-coin-2a",
- "EUR:0.5",
NULL),
TALER_TESTING_cmd_recoup ("recoup-2b",
MHD_HTTP_CONFLICT,
"recoup-withdraw-coin-2a",
- "EUR:0.5",
NULL),
TALER_TESTING_cmd_deposit ("recoup-deposit-revoked",
"recoup-withdraw-coin-2b",
diff --git a/src/testing/test_exchange_api_revocation.c
b/src/testing/test_exchange_api_revocation.c
index 467b93e9..05ec06b1 100644
--- a/src/testing/test_exchange_api_revocation.c
+++ b/src/testing/test_exchange_api_revocation.c
@@ -117,27 +117,31 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-1a",
MHD_HTTP_OK,
"refresh-reveal-1#0",
- "EUR:1",
"refresh-melt-1"),
TALER_TESTING_cmd_recoup ("recoup-1b",
MHD_HTTP_OK,
"refresh-reveal-1#1",
- "EUR:1",
"refresh-melt-1"),
TALER_TESTING_cmd_recoup ("recoup-1c",
MHD_HTTP_OK,
"refresh-reveal-1#2",
- "EUR:1",
+ "refresh-melt-1"),
+ /* Repeat recoup to test idempotency */
+ TALER_TESTING_cmd_recoup ("recoup-1c",
+ MHD_HTTP_OK,
+ "refresh-reveal-1#2",
+ "refresh-melt-1"),
+ TALER_TESTING_cmd_recoup ("recoup-1c",
+ MHD_HTTP_OK,
+ "refresh-reveal-1#2",
"refresh-melt-1"),
TALER_TESTING_cmd_recoup ("recoup-1c",
MHD_HTTP_OK,
"refresh-reveal-1#2",
- "EUR:1",
"refresh-melt-1"),
TALER_TESTING_cmd_recoup ("recoup-1c",
MHD_HTTP_OK,
"refresh-reveal-1#2",
- "EUR:1",
"refresh-melt-1"),
/* Now we have EUR:3.83 EUR back after 3x EUR:1 in recoups */
/* Melt original coin AGAIN, but only create one 0.1 EUR coin;
@@ -168,14 +172,12 @@ run (void *cls,
TALER_TESTING_cmd_recoup ("recoup-2",
MHD_HTTP_OK,
"refresh-reveal-2",
- "EUR:0.1",
"refresh-melt-2"),
/* Due to recoup, original coin is now at EUR:3.79 */
/* Refund original (now zombie) coin to reserve */
TALER_TESTING_cmd_recoup ("recoup-3",
MHD_HTTP_OK,
"withdraw-revocation-coin-1",
- "EUR:3.79",
NULL),
/* Check the money is back with the reserve */
TALER_TESTING_cmd_status ("recoup-reserve-status-1",
diff --git a/src/testing/testing_api_cmd_recoup.c
b/src/testing/testing_api_cmd_recoup.c
index add54b87..b0012f82 100644
--- a/src/testing/testing_api_cmd_recoup.c
+++ b/src/testing/testing_api_cmd_recoup.c
@@ -86,11 +86,6 @@ struct RecoupState
*/
struct TALER_TESTING_Interpreter *is;
- /**
- * Amount expected to be paid back.
- */
- const char *amount;
-
/**
* Handle to the ongoing operation.
*/
@@ -157,9 +152,6 @@ parse_coin_reference (const char *coin_reference,
* @param cls closure
* @param http_status HTTP response code.
* @param ec taler-specific error code.
- * @param amount amount the exchange will wire back for this coin.
- * @param timestamp what time did the exchange receive the
- * /recoup request
* @param reserve_pub public key of the reserve receiving the recoup, NULL if
refreshed or on error
* @param old_coin_pub public key of the dirty coin, NULL if not refreshed or
on error
* @param full_response raw response from the exchange.
@@ -168,8 +160,6 @@ static void
recoup_cb (void *cls,
unsigned int http_status,
enum TALER_ErrorCode ec,
- const struct TALER_Amount *amount,
- struct GNUNET_TIME_Absolute timestamp,
const struct TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_CoinSpendPublicKeyP *old_coin_pub,
const json_t *full_response)
@@ -219,28 +209,7 @@ recoup_cb (void *cls,
switch (http_status)
{
case MHD_HTTP_OK:
- /* first, check amount */
- {
- struct TALER_Amount expected_amount;
-
- if (GNUNET_OK !=
- TALER_string_to_amount (ps->amount, &expected_amount))
- {
- GNUNET_break (0);
- TALER_TESTING_interpreter_fail (is);
- return;
- }
- if (0 != TALER_amount_cmp (amount, &expected_amount))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Total amount mismatch to command %s\n",
- cmd->label);
- json_dumpf (full_response, stderr, 0);
- TALER_TESTING_interpreter_fail (is);
- return;
- }
- }
- /* now, check old_coin_pub or reserve_pub, respectively */
+ /* check old_coin_pub or reserve_pub, respectively */
if (NULL != ps->melt_reference)
{
const struct TALER_TESTING_Command *melt_cmd;
@@ -559,7 +528,6 @@ struct TALER_TESTING_Command
TALER_TESTING_cmd_recoup (const char *label,
unsigned int expected_response_code,
const char *coin_reference,
- const char *amount,
const char *melt_reference)
{
struct RecoupState *ps;
@@ -567,7 +535,6 @@ TALER_TESTING_cmd_recoup (const char *label,
ps = GNUNET_new (struct RecoupState);
ps->expected_response_code = expected_response_code;
ps->coin_reference = coin_reference;
- ps->amount = amount;
ps->melt_reference = melt_reference;
{
struct TALER_TESTING_Command cmd = {
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