/*
 * This module implements the sms-erase family of commands.
 */

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

#define	SMS_RECORD_LEN	176

static
select_ef_sms()
{
	int rc;

	rc = select_op(DF_TELECOM);
	if (rc < 0)
		return(rc);
	rc = select_op(EF_SMS);
	if (rc < 0)
		return(rc);
	rc = parse_ef_select_response();
	if (rc < 0)
		return(rc);
	if (curfile_structure != 0x01) {
		fprintf(stderr, "error: EF_SMS is not linear fixed\n");
		return(-1);
	}
	if (curfile_record_len != SMS_RECORD_LEN) {
		fprintf(stderr,
		"error: EF_SMS has record length of %u bytes, expected 176\n",
			curfile_record_len);
		return(-1);
	}
	return(0);
}

cmd_sms_erase_all(argc, argv)
	char **argv;
{
	int rc;
	unsigned recno;
	u_char record[SMS_RECORD_LEN];

	rc = select_ef_sms();
	if (rc < 0)
		return(rc);
	memset(record, 0xFF, SMS_RECORD_LEN);
	record[0] = 0;
	for (recno = 1; recno <= curfile_record_count; recno++) {
		rc = update_rec_op(recno, 0x04, record, SMS_RECORD_LEN);
		if (rc < 0)
			return(rc);
	}
	return(0);
}

cmd_sms_erase_one(argc, argv)
	char **argv;
{
	int rc;
	unsigned recno;
	u_char record[SMS_RECORD_LEN];

	rc = select_ef_sms();
	if (rc < 0)
		return(rc);
	recno = strtoul(argv[1], 0, 0);
	if (recno < 1 || recno > curfile_record_count) {
		fprintf(stderr, "error: specified record number is invalid\n");
		return(-1);
	}
	memset(record, 0xFF, SMS_RECORD_LEN);
	record[0] = 0;
	return update_rec_op(recno, 0x04, record, SMS_RECORD_LEN);
}

cmd_sms_erase_range(argc, argv)
	char **argv;
{
	int rc;
	unsigned recno, startrec, endrec;
	u_char record[SMS_RECORD_LEN];

	rc = select_ef_sms();
	if (rc < 0)
		return(rc);
	startrec = strtoul(argv[1], 0, 0);
	if (startrec < 1 || startrec > curfile_record_count) {
		fprintf(stderr,
			"error: specified starting record number is invalid\n");
		return(-1);
	}
	if (!strcmp(argv[2], "end"))
		endrec = curfile_record_count;
	else {
		endrec = strtoul(argv[2], 0, 0);
		if (endrec < 1 || endrec > curfile_record_count) {
			fprintf(stderr,
			"error: specified final record number is invalid\n");
			return(-1);
		}
		if (startrec > endrec) {
			fprintf(stderr,
				"error: reverse record range specified\n");
			return(-1);
		}
	}
	memset(record, 0xFF, SMS_RECORD_LEN);
	record[0] = 0;
	for (recno = startrec; recno <= endrec; recno++) {
		rc = update_rec_op(recno, 0x04, record, SMS_RECORD_LEN);
		if (rc < 0)
			return(rc);
	}
	return(0);
}