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address FIXMEs

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This commit is contained in:
Christian Grothoff 2020-12-25 08:51:56 +01:00
parent e1e9250ff7
commit 6243afe0ef
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 26 additions and 12 deletions
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38
src/exchangedb/plugin_exchangedb_postgres.c
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@ -627,6 +627,13 @@ postgres_get_session (void *cls)
" FROM known_coins"
" WHERE coin_pub=$1;",
1),
/* Used in #postgres_ensure_coin_known() */
GNUNET_PQ_make_prepare ("get_known_coin_dh",
"SELECT"
" denom_pub_hash"
" FROM known_coins"
" WHERE coin_pub=$1;",
1),
/* Used in #postgres_get_coin_denomination() to fetch
the denomination public key hash for
a coin known to the exchange. */
@ -2844,11 +2851,12 @@ postgres_insert_withdraw_info (
{
/* The reserve history was checked to make sure there is enough of a balance
left before we tried this; however, concurrent operations may have changed
the situation by now. We should re-try the transaction. */
the situation by now, causing us to fail here. As reserves can no longer
be topped up, retrying should not help either. */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Withdrawal from reserve `%s' refused due to balance mismatch. Retrying.\n",
"Withdrawal from reserve `%s' refused due to insufficient balance.\n",
TALER_B2S (&collectable->reserve_pub));
return GNUNET_DB_STATUS_SOFT_ERROR; // FIXME: really soft error? would retry help!?
return GNUNET_DB_STATUS_HARD_ERROR;
}
expiry = GNUNET_TIME_absolute_add (now,
pg->legal_reserve_expiration_time);
@ -3853,7 +3861,16 @@ postgres_ensure_coin_known (void *cls,
{
struct PostgresClosure *pc = cls;
enum GNUNET_DB_QueryStatus qs;
struct TALER_CoinPublicInfo known_coin;
struct GNUNET_HashCode denom_pub_hash;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (&coin->coin_pub),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
&denom_pub_hash),
GNUNET_PQ_result_spec_end
};
#if EXPLICIT_LOCKS
struct GNUNET_PQ_QueryParam no_params[] = {
GNUNET_PQ_query_param_end
@ -3864,13 +3881,11 @@ postgres_ensure_coin_known (void *cls,
no_params)))
return qs;
#endif
/* check if the coin is already known */
// FIXME: modify to not also fetch the RSA signature, needlessly costly!
qs = postgres_get_known_coin (pc,
session,
&coin->coin_pub,
&known_coin);
qs = GNUNET_PQ_eval_prepared_singleton_select (session->conn,
"get_known_coin_dh",
params,
rs);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
@ -3878,8 +3893,7 @@ postgres_ensure_coin_known (void *cls,
case GNUNET_DB_STATUS_SOFT_ERROR:
return TALER_EXCHANGEDB_CKS_HARD_FAIL;
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
GNUNET_CRYPTO_rsa_signature_free (known_coin.denom_sig.rsa_signature);
if (0 == GNUNET_memcmp (&known_coin.denom_pub_hash,
if (0 == GNUNET_memcmp (&denom_pub_hash,
&coin->denom_pub_hash))
return TALER_EXCHANGEDB_CKS_PRESENT;
GNUNET_break_op (0);