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/*
This file is part of TALER
Copyright (C) 2022 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 exchangedb/pg_batch_ensure_coin_known.c
* @brief Implementation of the batch_ensure_coin_known function for Postgres
* @author Christian Grothoff
*
* FIXME: use the array support for postgres to simplify this code!
*
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_exchangedb_plugin.h"
#include "taler_pq_lib.h"
#include "pg_batch_ensure_coin_known.h"
#include "pg_helper.h"
static enum GNUNET_DB_QueryStatus
insert1 (struct PostgresClosure *pg,
const struct TALER_CoinPublicInfo coin[1],
struct TALER_EXCHANGEDB_CoinInfo result[1])
{
enum GNUNET_DB_QueryStatus qs;
bool is_denom_pub_hash_null = false;
bool is_age_hash_null = false;
PREPARE (pg,
"batch1_known_coin",
"SELECT"
" existed1 AS existed"
",known_coin_id1 AS known_coin_id"
",denom_pub_hash1 AS denom_hash"
",age_commitment_hash1 AS h_age_commitment"
" FROM exchange_do_batch1_known_coin"
" ($1, $2, $3, $4);"
);
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (&coin[0].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[0].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[0].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[0].denom_sig),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_bool ("existed",
&result[0].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id",
&result[0].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
&result[0].denom_hash),
&is_denom_pub_hash_null),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
&result[0].h_age_commitment),
&is_age_hash_null),
GNUNET_PQ_result_spec_end
};
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"batch1_known_coin",
params,
rs);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
GNUNET_break (0);
return qs;
case GNUNET_DB_STATUS_SOFT_ERROR:
return qs;
case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
GNUNET_break (0); /* should be impossible */
return GNUNET_DB_STATUS_HARD_ERROR;
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break; /* continued below */
}
if ( (! is_denom_pub_hash_null) &&
(0 != GNUNET_memcmp (&result[0].denom_hash,
&coin->denom_pub_hash)) )
{
GNUNET_break_op (0);
result[0].denom_conflict = true;
}
if ( (! is_denom_pub_hash_null) &&
(0 != GNUNET_memcmp (&result[0].denom_hash,
&coin[0].denom_pub_hash)) )
{
GNUNET_break_op (0);
result[0].denom_conflict = true;
}
result[0].age_conflict = TALER_AgeCommitmentHash_NoConflict;
if (is_age_hash_null != coin[0].no_age_commitment)
{
if (is_age_hash_null)
{
GNUNET_break_op (0);
result[0].age_conflict = TALER_AgeCommitmentHash_NullExpected;
}
else
{
GNUNET_break_op (0);
result[0].age_conflict = TALER_AgeCommitmentHash_ValueExpected;
}
}
else if ( (! is_age_hash_null) &&
(0 != GNUNET_memcmp (&result[0].h_age_commitment,
&coin[0].h_age_commitment)) )
{
GNUNET_break_op (0);
result[0].age_conflict = TALER_AgeCommitmentHash_ValueDiffers;
}
return qs;
}
static enum GNUNET_DB_QueryStatus
insert2 (struct PostgresClosure *pg,
const struct TALER_CoinPublicInfo coin[2],
struct TALER_EXCHANGEDB_CoinInfo result[2])
{
enum GNUNET_DB_QueryStatus qs;
bool is_denom_pub_hash_null[2] = {false, false};
bool is_age_hash_null[2] = {false, false};
PREPARE (pg,
"batch2_known_coin",
"SELECT"
" existed1 AS existed"
",known_coin_id1 AS known_coin_id"
",denom_pub_hash1 AS denom_hash"
",age_commitment_hash1 AS h_age_commitment"
",existed2 AS existed2"
",known_coin_id2 AS known_coin_id2"
",denom_pub_hash2 AS denom_hash2"
",age_commitment_hash2 AS h_age_commitment2"
" FROM exchange_do_batch2_known_coin"
" ($1, $2, $3, $4, $5, $6, $7, $8);"
);
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (&coin[0].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[0].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[0].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[0].denom_sig),
GNUNET_PQ_query_param_auto_from_type (&coin[1].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[1].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[1].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[0].denom_sig),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_bool ("existed",
&result[0].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id",
&result[0].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
&result[0].denom_hash),
&is_denom_pub_hash_null[0]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
&result[0].h_age_commitment),
&is_age_hash_null[0]),
GNUNET_PQ_result_spec_bool ("existed2",
&result[1].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id2",
&result[1].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash2",
&result[1].denom_hash),
&is_denom_pub_hash_null[1]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash2",
&result[1].h_age_commitment),
&is_age_hash_null[1]),
GNUNET_PQ_result_spec_end
};
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"batch2_known_coin",
params,
rs);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
GNUNET_break (0);
return qs;
case GNUNET_DB_STATUS_SOFT_ERROR:
return qs;
case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
GNUNET_break (0); /* should be impossible */
return GNUNET_DB_STATUS_HARD_ERROR;
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break; /* continued below */
}
for (int i = 0; i < 2; i++)
{
if ( (! is_denom_pub_hash_null[i]) &&
(0 != GNUNET_memcmp (&result[i].denom_hash,
&coin[i].denom_pub_hash)) )
{
GNUNET_break_op (0);
result[i].denom_conflict = true;
}
result[i].age_conflict = TALER_AgeCommitmentHash_NoConflict;
if (is_age_hash_null[i] != coin[i].no_age_commitment)
{
if (is_age_hash_null[i])
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_NullExpected;
}
else
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_ValueExpected;
}
}
else if ( (! is_age_hash_null[i]) &&
(0 != GNUNET_memcmp (&result[i].h_age_commitment,
&coin[i].h_age_commitment)) )
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_ValueDiffers;
}
}
return qs;
}
static enum GNUNET_DB_QueryStatus
insert4 (struct PostgresClosure *pg,
const struct TALER_CoinPublicInfo coin[4],
struct TALER_EXCHANGEDB_CoinInfo result[4])
{
enum GNUNET_DB_QueryStatus qs;
bool is_denom_pub_hash_null[4] = {false, false, false, false};
bool is_age_hash_null[4] = {false, false, false, false};
PREPARE (pg,
"batch4_known_coin",
"SELECT"
" existed1 AS existed"
",known_coin_id1 AS known_coin_id"
",denom_pub_hash1 AS denom_hash"
",age_commitment_hash1 AS h_age_commitment"
",existed2 AS existed2"
",known_coin_id2 AS known_coin_id2"
",denom_pub_hash2 AS denom_hash2"
",age_commitment_hash2 AS h_age_commitment2"
",existed3 AS existed3"
",known_coin_id3 AS known_coin_id3"
",denom_pub_hash3 AS denom_hash3"
",age_commitment_hash3 AS h_age_commitment3"
",existed4 AS existed4"
",known_coin_id4 AS known_coin_id4"
",denom_pub_hash4 AS denom_hash4"
",age_commitment_hash4 AS h_age_commitment4"
" FROM exchange_do_batch2_known_coin"
" ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16);"
);
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (&coin[0].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[0].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[0].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[0].denom_sig),
GNUNET_PQ_query_param_auto_from_type (&coin[1].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[1].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[1].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[0].denom_sig),
GNUNET_PQ_query_param_auto_from_type (&coin[2].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[2].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[2].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[2].denom_sig),
GNUNET_PQ_query_param_auto_from_type (&coin[3].coin_pub),
GNUNET_PQ_query_param_auto_from_type (&coin[3].denom_pub_hash),
GNUNET_PQ_query_param_auto_from_type (&coin[3].h_age_commitment),
TALER_PQ_query_param_denom_sig (&coin[3].denom_sig),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_bool ("existed",
&result[0].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id",
&result[0].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
&result[0].denom_hash),
&is_denom_pub_hash_null[0]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
&result[0].h_age_commitment),
&is_age_hash_null[0]),
GNUNET_PQ_result_spec_bool ("existed2",
&result[1].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id2",
&result[1].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash2",
&result[1].denom_hash),
&is_denom_pub_hash_null[1]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash2",
&result[1].h_age_commitment),
&is_age_hash_null[1]),
GNUNET_PQ_result_spec_bool ("existed3",
&result[2].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id3",
&result[2].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash3",
&result[2].denom_hash),
&is_denom_pub_hash_null[2]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash3",
&result[2].h_age_commitment),
&is_age_hash_null[2]),
GNUNET_PQ_result_spec_bool ("existed4",
&result[3].existed),
GNUNET_PQ_result_spec_uint64 ("known_coin_id4",
&result[3].known_coin_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash4",
&result[3].denom_hash),
&is_denom_pub_hash_null[3]),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash4",
&result[3].h_age_commitment),
&is_age_hash_null[3]),
GNUNET_PQ_result_spec_end
};
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"batch4_known_coin",
params,
rs);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
GNUNET_break (0);
return qs;
case GNUNET_DB_STATUS_SOFT_ERROR:
return qs;
case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
GNUNET_break (0); /* should be impossible */
return GNUNET_DB_STATUS_HARD_ERROR;
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break; /* continued below */
}
for (int i = 0; i < 4; i++)
{
if ( (! is_denom_pub_hash_null[i]) &&
(0 != GNUNET_memcmp (&result[i].denom_hash,
&coin[i].denom_pub_hash)) )
{
GNUNET_break_op (0);
result[i].denom_conflict = true;
}
result[i].age_conflict = TALER_AgeCommitmentHash_NoConflict;
if (is_age_hash_null[i] != coin[i].no_age_commitment)
{
if (is_age_hash_null[i])
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_NullExpected;
}
else
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_ValueExpected;
}
}
else if ( (! is_age_hash_null[i]) &&
(0 != GNUNET_memcmp (&result[i].h_age_commitment,
&coin[i].h_age_commitment)) )
{
GNUNET_break_op (0);
result[i].age_conflict = TALER_AgeCommitmentHash_ValueDiffers;
}
}
return qs;
}
enum GNUNET_DB_QueryStatus
TEH_PG_batch_ensure_coin_known (
void *cls,
const struct TALER_CoinPublicInfo *coin,
struct TALER_EXCHANGEDB_CoinInfo *result,
unsigned int coin_length,
unsigned int batch_size)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs = 0;
unsigned int i = 0;
while ( (qs >= 0) &&
(i < coin_length) )
{
unsigned int bs = GNUNET_MIN (batch_size,
coin_length - i);
if (bs >= 4)
{
qs = insert4 (pg,
&coin[i],
&result[i]);
i += 4;
continue;
}
switch (bs)
{
case 3:
case 2:
qs = insert2 (pg,
&coin[i],
&result[i]);
i += 2;
break;
case 1:
qs = insert1 (pg,
&coin[i],
&result[i]);
i += 1;
break;
case 0:
GNUNET_assert (0);
break;
}
} /* end while */
if (qs < 0)
return qs;
return i;
}
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