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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_iterate_denominations.c
* @brief Implementation of the iterate_denominations function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_iterate_denominations.h"
#include "pg_helper.h"
/**
* Closure for #dominations_cb_helper()
*/
struct DenomsIteratorContext
{
/**
* Function to call with the results.
*/
TALER_EXCHANGEDB_DenominationsCallback cb;
/**
* Closure to pass to @e cb
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
};
/**
* Helper function for #TEH_PG_iterate_denominations().
* Calls the callback with each denomination key.
*
* @param cls a `struct DenomsIteratorContext`
* @param result db results
* @param num_results number of results in @a result
*/
static void
dominations_cb_helper (void *cls,
PGresult *result,
unsigned int num_results)
{
struct DenomsIteratorContext *dic = cls;
struct PostgresClosure *pg = dic->pg;
for (unsigned int i = 0; i<num_results; i++)
{
struct TALER_EXCHANGEDB_DenominationKeyMetaData meta = {0};
struct TALER_DenominationPublicKey denom_pub = {0};
struct TALER_MasterSignatureP master_sig = {0};
struct TALER_DenominationHashP h_denom_pub = {0};
bool revoked;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("master_sig",
&master_sig),
GNUNET_PQ_result_spec_bool ("revoked",
&revoked),
GNUNET_PQ_result_spec_timestamp ("valid_from",
&meta.start),
GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
&meta.expire_withdraw),
GNUNET_PQ_result_spec_timestamp ("expire_deposit",
&meta.expire_deposit),
GNUNET_PQ_result_spec_timestamp ("expire_legal",
&meta.expire_legal),
TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
&meta.value),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
&meta.fees.withdraw),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
&meta.fees.deposit),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
&meta.fees.refresh),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
&meta.fees.refund),
TALER_PQ_result_spec_denom_pub ("denom_pub",
&denom_pub),
GNUNET_PQ_result_spec_uint32 ("age_mask",
&meta.age_mask.bits),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
return;
}
/* make sure the mask information is the same */
denom_pub.age_mask = meta.age_mask;
TALER_denom_pub_hash (&denom_pub,
&h_denom_pub);
dic->cb (dic->cb_cls,
&denom_pub,
&h_denom_pub,
&meta,
&master_sig,
revoked);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_iterate_denominations (void *cls,
TALER_EXCHANGEDB_DenominationsCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_end
};
struct DenomsIteratorContext dic = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg
};
/* Used in #postgres_iterate_denominations() */
PREPARE (pg,
"select_denominations",
"SELECT"
" denominations.master_sig"
",denom_revocations_serial_id IS NOT NULL AS revoked"
",valid_from"
",expire_withdraw"
",expire_deposit"
",expire_legal"
",coin_val" /* value of this denom */
",coin_frac" /* fractional value of this denom */
",fee_withdraw_val"
",fee_withdraw_frac"
",fee_deposit_val"
",fee_deposit_frac"
",fee_refresh_val"
",fee_refresh_frac"
",fee_refund_val"
",fee_refund_frac"
",denom_type"
",age_mask"
",denom_pub"
" FROM denominations"
" LEFT JOIN "
" denomination_revocations USING (denominations_serial);");
return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"select_denominations",
params,
&dominations_cb_helper,
&dic);
}
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