/*
 * This program is a special utility for generating lists of ICCIDs
 * following the 18+1 convention.  The first argument is the starting
 * ICCID without Luhn (entered as shorthand, expanded to 18 digits),
 * the second argument is the number of consecutive ICCIDs to generate.
 * The output is a list of full 19-digit ICCIDs.
 */

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

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

	if (argc != 3) {
		fprintf(stderr, "usage: %s start-iccid num-cards\n", argv[0]);
		exit(1);
	}
	rc = parse_decimal_shorthand(argv[1], digits, 18);
	if (rc < 0)
		exit(1);	/* error msg already printed */
	total = atoi(argv[2]);
	for (n = 0; n < total; n++) {
		digits[18] = compute_iccid_luhn(digits);
		nibbles_to_ascii(digits, 19, asc);
		puts(asc);
		decimal_string_increment(digits, 18);
	}
	exit(0);
}