105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2014-2020 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 config.c
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* @brief configuration parsing functions for Taler-specific data types
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* @author Florian Dold
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* @author Benedikt Mueller
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*/
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#include "platform.h"
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#include "taler_util.h"
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/**
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* Obtain denomination amount from configuration file.
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*
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* @param cfg configuration to use
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* @param section section of the configuration to access
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* @param option option of the configuration to access
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* @param[out] denom set to the amount found in configuration
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* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
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*/
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enum GNUNET_GenericReturnValue
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TALER_config_get_amount (const struct GNUNET_CONFIGURATION_Handle *cfg,
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const char *section,
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const char *option,
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struct TALER_Amount *denom)
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{
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char *str;
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if (GNUNET_OK !=
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GNUNET_CONFIGURATION_get_value_string (cfg,
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section,
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option,
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&str))
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{
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GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
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section,
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option);
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return GNUNET_NO;
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}
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if (GNUNET_OK !=
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TALER_string_to_amount (str,
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denom))
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{
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GNUNET_free (str);
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GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
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section,
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option,
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"invalid amount");
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return GNUNET_SYSERR;
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}
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GNUNET_free (str);
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return GNUNET_OK;
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}
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/**
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* Load our currency from the @a cfg (in section [taler]
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* the option "CURRENCY").
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*
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* @param cfg configuration to use
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* @param[out] currency where to write the result
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* @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
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*/
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enum GNUNET_GenericReturnValue
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TALER_config_get_currency (const struct GNUNET_CONFIGURATION_Handle *cfg,
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char **currency)
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{
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if (GNUNET_OK !=
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GNUNET_CONFIGURATION_get_value_string (cfg,
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"taler",
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"CURRENCY",
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currency))
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{
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GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
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"taler",
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"CURRENCY");
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return GNUNET_SYSERR;
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}
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if (strlen (*currency) >= TALER_CURRENCY_LEN)
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{
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GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
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"Currency `%s' longer than the allowed limit of %u characters.",
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*currency,
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(unsigned int) TALER_CURRENCY_LEN);
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GNUNET_free (*currency);
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*currency = NULL;
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return GNUNET_SYSERR;
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}
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return GNUNET_OK;
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}
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