view utils/sim-iccid-mkfull.c @ 47:b0cf75d0bb2d

doc/Serial-SIM-readers article written
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 21 Mar 2021 04:32:18 +0000
parents 372ecc4aa2c4
children
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/*
 * This program is a special utility for constructing ICCIDs
 * following the 18+1 convention.  The argument is an 18-digit ICCID
 * base, usually entered in shorthand, and the output is the full
 * 19-digit ICCID.
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>

main(argc, argv)
	char **argv;
{
	u_char digits[19];
	char asc[20];
	int rc;

	if (argc != 2) {
		fprintf(stderr, "usage: %s shorthand-iccid\n", argv[0]);
		exit(1);
	}
	rc = parse_decimal_shorthand(argv[1], digits, 18);
	if (rc < 0)
		exit(1);	/* error msg already printed */
	digits[18] = compute_iccid_luhn(digits);
	nibbles_to_ascii(digits, 19, asc);
	puts(asc);
	exit(0);
}