159 lines
4.5 KiB
C
159 lines
4.5 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2022 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file exchangedb/pg_select_aml_history.c
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* @brief Implementation of the select_aml_history function for Postgres
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include "taler_error_codes.h"
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#include "taler_dbevents.h"
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#include "taler_pq_lib.h"
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#include "pg_select_aml_history.h"
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#include "pg_helper.h"
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/**
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* Closure for #handle_aml_result.
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*/
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struct AmlHistoryResultContext
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{
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/**
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* Function to call on each result.
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*/
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TALER_EXCHANGEDB_AmlHistoryCallback cb;
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/**
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* Closure for @e cb.
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*/
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void *cb_cls;
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/**
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* Plugin context.
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*/
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struct PostgresClosure *pg;
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/**
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* Set to #GNUNET_SYSERR on serious errors.
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*/
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enum GNUNET_GenericReturnValue status;
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};
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/**
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* Function to be called with the results of a SELECT statement
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* that has returned @a num_results results. Helper function
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* for #TEH_PG_select_aml_history().
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*
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* @param cls closure of type `struct AmlHistoryResultContext *`
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* @param result the postgres result
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* @param num_results the number of results in @a result
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*/
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static void
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handle_aml_result (void *cls,
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PGresult *result,
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unsigned int num_results)
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{
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struct AmlHistoryResultContext *ctx = cls;
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struct PostgresClosure *pg = ctx->pg;
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for (unsigned int i = 0; i<num_results; i++)
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{
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struct TALER_Amount new_threshold;
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uint32_t ns;
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struct GNUNET_TIME_Timestamp decision_time;
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char *justification;
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struct TALER_AmlOfficerPublicKeyP decider_pub;
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struct TALER_AmlOfficerSignatureP decider_sig;
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struct GNUNET_PQ_ResultSpec rs[] = {
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TALER_PQ_RESULT_SPEC_AMOUNT ("new_threshold",
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&new_threshold),
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GNUNET_PQ_result_spec_uint32 ("new_status",
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&ns),
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GNUNET_PQ_result_spec_timestamp ("decision_time",
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&decision_time),
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GNUNET_PQ_result_spec_string ("justification",
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&justification),
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GNUNET_PQ_result_spec_auto_from_type ("decider_pub",
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&decider_pub),
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GNUNET_PQ_result_spec_auto_from_type ("decider_sig",
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&decider_sig),
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GNUNET_PQ_result_spec_end
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};
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if (GNUNET_OK !=
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GNUNET_PQ_extract_result (result,
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rs,
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i))
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{
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GNUNET_break (0);
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ctx->status = GNUNET_SYSERR;
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return;
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}
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ctx->cb (ctx->cb_cls,
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&new_threshold,
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(enum TALER_AmlDecisionState) ns,
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decision_time,
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justification,
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&decider_pub,
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&decider_sig);
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GNUNET_PQ_cleanup_result (rs);
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}
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}
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enum GNUNET_DB_QueryStatus
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TEH_PG_select_aml_history (
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void *cls,
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const struct TALER_PaytoHashP *h_payto,
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TALER_EXCHANGEDB_AmlHistoryCallback cb,
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void *cb_cls)
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{
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struct PostgresClosure *pg = cls;
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struct GNUNET_PQ_QueryParam params[] = {
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GNUNET_PQ_query_param_auto_from_type (h_payto),
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GNUNET_PQ_query_param_end
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};
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struct AmlHistoryResultContext ctx = {
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.cb = cb,
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.cb_cls = cb_cls,
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.pg = pg,
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.status = GNUNET_OK
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};
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enum GNUNET_DB_QueryStatus qs;
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PREPARE (pg,
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"lookup_aml_history",
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"SELECT"
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" new_threshold_val"
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",new_threshold_frac"
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",new_status"
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",decision_time"
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",justification"
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",decider_pub"
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",decider_sig"
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" FROM aml_history"
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" WHERE h_payto=$1;");
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qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
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"lookup_aml_history",
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params,
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&handle_aml_result,
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&ctx);
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if (GNUNET_OK != ctx.status)
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return GNUNET_DB_STATUS_HARD_ERROR;
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return qs;
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}
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