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add request UID repetition detection to fakebank

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This commit is contained in:
Christian Grothoff 2020-01-13 22:27:49 +01:00
parent 7ce48d622e
commit 5f6d867469
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GPG Key ID: 939E6BE1E29FC3CC
2 changed files with 35 additions and 5 deletions
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36
src/bank-lib/fakebank.c
View File

@ -28,7 +28,7 @@
#include "taler_mhd_lib.h"
/**
* Maximum POST request size (for /admin/add/incoming)
* Maximum POST request size (for /admin/add-incoming)
*/
#define REQUEST_BUFFER_MAX (4 * 1024)
@ -63,6 +63,11 @@ struct Transaction
*/
char *credit_account;
/**
* Random unique identifier for the request.
*/
struct GNUNET_HashCode request_uid;
/**
* What does the @e subject contain?
*/
@ -346,6 +351,7 @@ TALER_FAKEBANK_check_credit (struct TALER_FAKEBANK_Handle *h,
* @param amount amount to transfer
* @param subject wire transfer subject to use
* @param exchange_base_url exchange URL
* @param request_uid unique number to make the request unique, or NULL to create one
* @return row_id of the transfer
*/
uint64_t
@ -355,10 +361,27 @@ TALER_FAKEBANK_make_transfer (struct TALER_FAKEBANK_Handle *h,
const struct TALER_Amount *amount,
const struct
TALER_WireTransferIdentifierRawP *subject,
const char *exchange_base_url)
const char *exchange_base_url,
const struct GNUNET_HashCode *request_uid)
{
struct Transaction *t;
if (NULL != request_uid)
{
for (struct Transaction *t = h->transactions_head; NULL != t; t = t->next)
if ( (0 == GNUNET_memcmp (request_uid,
&t->request_uid)) &&
(0 == strcasecmp (debit_account,
t->debit_account)) &&
(0 == strcasecmp (credit_account,
t->credit_account)) &&
(0 == TALER_amount_cmp (amount,
&t->amount)) &&
(T_DEBIT == t->type) &&
(0 == GNUNET_memcmp (subject,
&t->subject.debit.wtid)) )
return t->row_id;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Making transfer from %s to %s over %s and subject %s; for exchange: %s\n",
debit_account,
@ -375,6 +398,11 @@ TALER_FAKEBANK_make_transfer (struct TALER_FAKEBANK_Handle *h,
t->type = T_DEBIT;
t->subject.debit.exchange_base_url = GNUNET_strdup (exchange_base_url);
t->subject.debit.wtid = *subject;
if (NULL == request_uid)
GNUNET_CRYPTO_hash_create_random (GNUNET_CRYPTO_QUALITY_NONCE,
&t->request_uid);
else
t->request_uid = *request_uid;
GNUNET_TIME_round_abs (&t->date);
GNUNET_CONTAINER_DLL_insert_tail (h->transactions_head,
h->transactions_tail,
@ -690,13 +718,13 @@ handle_transfer (struct TALER_FAKEBANK_Handle *h,
return MHD_NO;
}
{
// FIXME: use uuid here!!!
row_id = TALER_FAKEBANK_make_transfer (h,
account,
credit_account,
&amount,
&wtid,
base_url);
base_url,
&uuid);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Receiving incoming wire transfer: %s->%s, subject: %s, amount: %s, from %s\n",
account,

4
src/include/taler_fakebank_lib.h
View File

@ -70,6 +70,7 @@ TALER_FAKEBANK_check_empty (struct TALER_FAKEBANK_Handle *h);
* @param amount amount to transfer
* @param subject wire transfer subject to use
* @param exchange_base_url exchange URL
* @param request_uid unique number to make the request unique, or NULL to create one
* @return serial_id of the transfer
*/
uint64_t
@ -79,7 +80,8 @@ TALER_FAKEBANK_make_transfer (struct TALER_FAKEBANK_Handle *h,
const struct TALER_Amount *amount,
const struct
TALER_WireTransferIdentifierRawP *subject,
const char *exchange_base_url);
const char *exchange_base_url,
const struct GNUNET_HashCode *request_uid);
/**