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Diffstat (limited to 'src/reducer/validation_CZ_BN.c')
-rw-r--r-- | src/reducer/validation_CZ_BN.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/reducer/validation_CZ_BN.c b/src/reducer/validation_CZ_BN.c new file mode 100644 index 0000000..4598c42 --- /dev/null +++ b/src/reducer/validation_CZ_BN.c @@ -0,0 +1,59 @@ +/* + This file is part of Anastasis + Copyright (C) 2020, 2021 Taler Systems SA + + 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 redux/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); +} |