/*
 * This module implements write-iccid and write-imsi commands,
 * available only in the admin programming phase after authenticating
 * with some card-vendor-dependent ADM key.
 */

#include <sys/types.h>
#include <stdio.h>
#include "curfile.h"
#include "file_id.h"

cmd_write_imsi(argc, argv)
	char **argv;
{
	int rc;
	u_char nibbles[16], binrec[9];
	unsigned ndig;

	rc = parse_decimal_string_arg(argv[1], nibbles + 1, 15);
	if (rc < 0)
		return(rc);
	ndig = rc;
	if (ndig & 1)
		nibbles[0] = 9;
	else
		nibbles[0] = 1;
	binrec[0] = (ndig + 2) >> 1;
	pack_reversed_nibbles(nibbles, binrec + 1, 8);
	rc = select_op(DF_GSM);
	if (rc < 0)
		return(rc);
	rc = select_op(EF_IMSI);
	if (rc < 0)
		return(rc);
	rc = parse_ef_select_response();
	if (rc < 0)
		return(rc);
	if (curfile_structure != 0x00 || curfile_total_size != 9) {
		fprintf(stderr,
			"error: EF_IMSI is not a transparent EF of 9 bytes\n");
		return(-1);
	}
	return update_bin_op(0, binrec, 9);
}