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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 backenddb/pg_select_accounts.c
* @brief Implementation of the select_accounts function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_select_accounts.h"
#include "pg_helper.h"
/**
* Context for select_accounts().
*/
struct SelectAccountsContext
{
/**
* Function to call with the results.
*/
TALER_MERCHANTDB_AccountCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Database context.
*/
struct PostgresClosure *pg;
/**
* Set to the return value on errors.
*/
enum GNUNET_DB_QueryStatus qs;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results about accounts.
*
* @param cls of type `struct SelectAccountsContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
select_account_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct SelectAccountsContext *lic = cls;
for (unsigned int i = 0; i < num_results; i++)
{
char *payto;
char *instance_id;
char *facade_url = NULL;
json_t *credential = NULL;
struct TALER_MERCHANTDB_AccountDetails acc;
struct TALER_MerchantPrivateKeyP merchant_priv;
bool no_priv;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("h_wire",
&acc.h_wire),
GNUNET_PQ_result_spec_auto_from_type ("salt",
&acc.salt),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto),
GNUNET_PQ_result_spec_string ("merchant_id",
&instance_id),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("credit_facade_url",
&facade_url),
NULL),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_json ("credit_facade_credentials",
&credential),
NULL),
GNUNET_PQ_result_spec_bool ("active",
&acc.active),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_auto_from_type ("merchant_priv",
&merchant_priv),
&no_priv),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
lic->qs = GNUNET_DB_STATUS_HARD_ERROR;
return;
}
acc.instance_id = instance_id;
acc.payto_uri = payto;
acc.credit_facade_url = facade_url;
acc.credit_facade_credentials = credential;
lic->cb (lic->cb_cls,
no_priv ? NULL : &merchant_priv,
&acc);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TMH_PG_select_accounts (void *cls,
const char *id,
TALER_MERCHANTDB_AccountCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct SelectAccountsContext lic = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg
};
struct GNUNET_PQ_QueryParam params[] = {
NULL == id
? GNUNET_PQ_query_param_null ()
: GNUNET_PQ_query_param_string (id),
GNUNET_PQ_query_param_end
};
enum GNUNET_DB_QueryStatus qs;
check_connection (pg);
PREPARE (pg,
"select_accounts",
"SELECT"
" ma.h_wire"
",ma.salt"
",ma.payto_uri"
",ma.credit_facade_url"
",ma.credit_facade_credentials"
",ma.active"
",mk.merchant_priv"
",mi.merchant_id"
" FROM merchant_accounts ma"
" JOIN merchant_instances mi"
" ON (mi.merchant_serial=ma.merchant_serial)"
" LEFT JOIN merchant_keys mk"
" ON (mk.merchant_serial=ma.merchant_serial)"
" WHERE"
" ($1::TEXT IS NULL) OR"
" (ma.merchant_serial="
" (SELECT merchant_serial "
" FROM merchant_instances"
" WHERE merchant_id=$1));");
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"select_accounts",
params,
&select_account_cb,
&lic);
if (0 > lic.qs)
return lic.qs;
return qs;
}
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