TeleTuKeygen.java

/*
 * Copyright 2012 Rui Araújo, Luís Fonseca
 *
 * This file is part of Router Keygen.
 *
 * Router Keygen is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Router Keygen 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 Router Keygen.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.exobel.routerkeygen.algorithms;

import android.os.Parcel;
import android.os.Parcelable;

import org.exobel.routerkeygen.R;
import org.exobel.routerkeygen.config.TeleTuMagicInfo;

import java.util.List;

/*
 * Using the last 6 bytes of the mac address which should be in a certain range
 * in the config file, we calculate the end of the serial number
 * which is the password.
 * 
 * The serial number is the decimal string of the difference between the last 6 bytes
 * of the mac address and a magic number and then divided by another magic number.
 */
public class TeleTuKeygen extends Keygen {

    public static final Parcelable.Creator<TeleTuKeygen> CREATOR = new Parcelable.Creator<TeleTuKeygen>() {
        public TeleTuKeygen createFromParcel(Parcel in) {
            return new TeleTuKeygen(in);
        }

        public TeleTuKeygen[] newArray(int size) {
            return new TeleTuKeygen[size];
        }
    };
    final private TeleTuMagicInfo magicInfo;

    public TeleTuKeygen(String ssid, String mac,
                        TeleTuMagicInfo magicInfo) {
        super(ssid, mac);
        this.magicInfo = magicInfo;
    }

    private TeleTuKeygen(Parcel in) {
        super(in);
        magicInfo = in.readParcelable(TeleTuMagicInfo.class.getClassLoader());
    }

    @Override
    public List<String> getKeys() {
        if (getMacAddress().length() != 12) {
            setErrorCode(R.string.msg_errpirelli);
            return null;
        }
        String serialEnd = Integer.toString((Integer.parseInt(getMacAddress()
                .substring(6), 16) - magicInfo.getBase())
                / magicInfo.getDivider());
        while (serialEnd.length() < 7) {
            serialEnd = "0" + serialEnd;
        }
        addPassword(magicInfo.getSerial() + "Y" + serialEnd);
        return getResults();
    }

    public void writeToParcel(Parcel dest, int flags) {
        super.writeToParcel(dest, flags);
        dest.writeParcelable(magicInfo, flags);
    }

}