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/*
This file is part of TALER
Copyright (C) 2016-2020 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero 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 Affero Public License for more details.
You should have received a copy of the GNU Affero Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file auditor/report-lib.h
* @brief helper library to facilitate generation of audit reports
* @author Christian Grothoff
*/
#ifndef REPORT_LIB_H
#define REPORT_LIB_H
#include <gnunet/gnunet_util_lib.h>
#include "taler_auditordb_plugin.h"
#include "taler_exchangedb_lib.h"
#include "taler_json_lib.h"
#include "taler_bank_service.h"
#include "taler_signatures.h"
/**
* Command-line option "-r": restart audit from scratch
*/
extern int TALER_ARL_restart;
/**
* Handle to access the exchange's database.
*/
extern struct TALER_EXCHANGEDB_Plugin *TALER_ARL_edb;
/**
* Which currency are we doing the audit for?
*/
extern char *TALER_ARL_currency;
/**
* How many fractional digits does the currency use?
*/
extern struct TALER_Amount TALER_ARL_currency_round_unit;
/**
* Our configuration.
*/
extern const struct GNUNET_CONFIGURATION_Handle *TALER_ARL_cfg;
/**
* Our session with the #TALER_ARL_edb.
*/
extern struct TALER_EXCHANGEDB_Session *TALER_ARL_esession;
/**
* Handle to access the auditor's database.
*/
extern struct TALER_AUDITORDB_Plugin *TALER_ARL_adb;
/**
* Our session with the #TALER_ARL_adb.
*/
extern struct TALER_AUDITORDB_Session *TALER_ARL_asession;
/**
* Master public key of the exchange to audit.
*/
extern struct TALER_MasterPublicKeyP TALER_ARL_master_pub;
/**
* At what time did the auditor process start?
*/
extern struct GNUNET_TIME_Absolute start_time;
/**
* Convert absolute time to human-readable JSON string.
*
* @param at time to convert
* @return human-readable string representing the time
*/
json_t *
TALER_ARL_json_from_time_abs_nbo (struct GNUNET_TIME_AbsoluteNBO at);
/**
* Convert absolute time to human-readable JSON string.
*
* @param at time to convert
* @return human-readable string representing the time
*/
json_t *
TALER_ARL_json_from_time_abs (struct GNUNET_TIME_Absolute at);
/**
* Add @a object to the report @a array. Fail hard if this fails.
*
* @param array report array to append @a object to
* @param object object to append, should be check that it is not NULL
*/
void
TALER_ARL_report (json_t *array,
json_t *object);
/**
* Obtain information about a @a denom_pub.
*
* @param dh hash of the denomination public key to look up
* @param[out] issue set to detailed information about @a denom_pub, NULL if not found, must
* NOT be freed by caller
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TALER_ARL_get_denomination_info_by_hash (
const struct GNUNET_HashCode *dh,
const struct TALER_DenominationKeyValidityPS **issue);
/**
* Obtain information about a @a denom_pub.
*
* @param denom_pub key to look up
* @param[out] issue set to detailed information about @a denom_pub, NULL if not found, must
* NOT be freed by caller
* @param[out] dh set to the hash of @a denom_pub, may be NULL
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TALER_ARL_get_denomination_info (
const struct TALER_DenominationPublicKey *denom_pub,
const struct TALER_DenominationKeyValidityPS **issue,
struct GNUNET_HashCode *dh);
/**
* Type of an analysis function. Each analysis function runs in
* its own transaction scope and must thus be internally consistent.
*
* @param cls closure
* @return transaction status code
*/
typedef enum GNUNET_DB_QueryStatus
(*TALER_ARL_Analysis)(void *cls);
/**
* Initialize DB sessions and run the analysis.
*
* @param ana analysis to run
* @param ana_cls closure for @a ana
* @return #GNUNET_OK on success
*/
int
TALER_ARL_setup_sessions_and_run (TALER_ARL_Analysis ana,
void *ana_cls);
/**
* Setup global variables based on configuration.
*
* @param c configuration to use
* @return #GNUNET_OK on success
*/
int
TALER_ARL_init (const struct GNUNET_CONFIGURATION_Handle *c);
/**
* Generate the report and close connectios to the database.
*
* @param report the report to output, may be NULL for no report
*/
void
TALER_ARL_done (json_t *report);
#endif
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