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/*
This file is part of Anastasis
Copyright (C) 2020, 2021 Anastasis SARL
Anastasis is free software; you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
Anastasis 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
Anastasis; see the file COPYING.GPL. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file reducer/validation_CZ_BN.c
* @brief validation of Czeck Birth Numbers
* @author Christian Grothoff
*/
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <gcrypt.h>
/**
* Function to validate a Check birth number. Basically,
* if it has 10 digits, it must be divisible by 11.
*
* @param b_number birth number to validate (input)
* @return true if b_number is valid
*/
bool
CZ_BN_check (const char *b_number)
{
unsigned long long n;
char dummy;
char in[11];
if (10 == strlen (b_number))
return true;
if (11 != strlen (b_number))
return false;
if (b_number[6] != '/')
return false;
memcpy (in,
b_number,
6);
memcpy (&in[6],
&b_number[7],
4);
in[10] = '\0';
if (1 != sscanf (in,
"%llu%c",
&n,
&dummy))
return false;
return 0 == (n % 11);
}
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