package org.owasp.webgoat.lessons;

import java.util.ArrayList;
import java.util.List;
import java.util.HashMap;

import org.apache.ecs.Element;
import org.apache.ecs.ElementContainer;
import org.apache.ecs.StringElement;
import org.apache.ecs.html.B;
import org.apache.ecs.html.BR;
import org.apache.ecs.html.H1;
import org.apache.ecs.html.IMG;
import org.apache.ecs.html.Input;
import org.apache.ecs.html.TD;
import org.apache.ecs.html.TH;
import org.apache.ecs.html.TR;
import org.apache.ecs.html.Table;

import org.owasp.webgoat.session.ECSFactory;
import org.owasp.webgoat.session.WebSession;

/**
 *  Copyright (c) 2002 Free Software Foundation developed under the custody of the Open Web
 *  Application Security Project (http://www.owasp.org) This software package org.owasp.webgoat.is published by OWASP
 *  under the GPL. You should read and accept the LICENSE before you use, modify and/or redistribute
 *  this software.
 *
 * @author     Eric Sheridan <a href="http://www.aspectsecurity.com">Aspect Security</a>
 * @created    December 18, 2005
 */
public class ForgotPassword extends LessonAdapter
{
    final static IMG ASPECT_LOGO = new IMG( "images/logos/aspect.jpg" ).setAlt( "Aspect Security" ).setBorder( 0 ).setHspace( 0 ).setVspace( 0 );
	private final static String USERNAME = "Username";
	private static String USERNAME_RESPONSE = "";
	private final static String COLOR = "Color";
	private static String COLOR_RESPONSE = "";
	private static int STAGE = 1;
	private final static HashMap<String, String> USERS = new HashMap<String, String>();
	private final static HashMap<String, String> COLORS = new HashMap<String, String>();
	
	private void populateTables()
	{
		USERS.put("admin", "2275$starBo0rn3");
		USERS.put("jeff", "(_I_)illia(V)s");
		USERS.put("dave", "\\V/ich3r$");
		USERS.put("intern", "H3yn0w");
		USERS.put("webgoat", "webgoat");
		
		COLORS.put("admin", "green");
		COLORS.put("jeff", "orange");
		COLORS.put("dave", "purple");
		COLORS.put("intern", "yellow");
		COLORS.put("webgoat", "red");
	}
	
	protected Element doStage1(WebSession s)
	{
		ElementContainer ec = new ElementContainer();

		ec.addElement( new BR().addElement( new H1().addElement( "Webgoat Password Recovery " )));
		Table t = new Table().setCellSpacing( 0 ).setCellPadding( 2 ).setBorder( 0 ).setWidth("90%").setAlign("center");

		if ( s.isColor() )
		{
			t.setBorder( 1 );
		}
		
		TR tr = new TR();
		tr.addElement( new TH().addElement("Please input your username.  See the OWASP admin if you do not have an account.")
				.setColSpan(2).setAlign("left"));
		t.addElement( tr );

		tr = new TR();
		tr.addElement( new TD().addElement("*Required Fields").setWidth("30%"));
		t.addElement( tr );
		
		tr = new TR();
		tr.addElement( new TD().addElement("&nbsp;").setColSpan(2));
		t.addElement( tr );
		
		TR row1 = new TR();
		row1.addElement( new TD( new B( new StringElement( "*User Name: " ) ) ));

		Input input1 = new Input( Input.TEXT, USERNAME, "" );
		row1.addElement( new TD( input1 ) );
		t.addElement( row1 );

		Element b = ECSFactory.makeButton( "Submit" );
		t.addElement( new TR( new TD( b ) ) );
		ec.addElement( t );

		return ( ec );
	}
	

	
	protected Element doStage2(WebSession s)
	{
		ElementContainer ec = new ElementContainer();

		ec.addElement( new H1().addElement( "Webgoat Password Recovery " ));
		Table t = new Table().setCellSpacing( 0 ).setCellPadding( 2 ).setBorder( 0 ).setWidth("90%").setAlign("center");

		if ( s.isColor() )
		{
			t.setBorder( 1 );
		}
		
		TR tr = new TR();
		tr.addElement( new TH().addElement("Secret Question: What is your favorite color?")
				.setColSpan(2).setAlign("left"));
		t.addElement( tr );

		tr = new TR();
		tr.addElement( new TD().addElement("*Required Fields").setWidth("20%"));
		t.addElement( tr );
		
		tr = new TR();
		tr.addElement( new TD().addElement("&nbsp;").setColSpan(2));
		t.addElement( tr );
		
		TR row1 = new TR();
		row1.addElement( new TD( new B( new StringElement( "*Answer: " ) ) ));

		Input input1 = new Input( Input.TEXT, COLOR, "" );
		row1.addElement( new TD( input1 ) );
		t.addElement( row1 );

		Element b = ECSFactory.makeButton( "Submit" );
		t.addElement( new TR( new TD( b ) ) );
		ec.addElement( t );

		return ( ec );
	}
	
	protected Element doStage3(WebSession s)
	{
		ElementContainer ec = new ElementContainer();
		
		ec.addElement( new H1().addElement( "Webgoat Password Recovery " ));
		Table t = new Table().setCellSpacing( 0 ).setCellPadding( 2 ).setBorder( 0 ).setWidth("90%").setAlign("center");

		if ( s.isColor() )
		{
			t.setBorder( 1 );
		}
		
		TR tr = new TR();
		tr.addElement( new TH().addElement("For security reasons, please change your password immediately.")
				.setColSpan(2).setAlign("left"));
		t.addElement( tr );
		
		tr = new TR();
		tr.addElement( new TD().addElement( new BR().addElement( new B().addElement( new StringElement("Results:")))).setAlign("left"));
		t.addElement ( tr );
		
		tr = new TR();
		tr.addElement( new TD().addElement( new StringElement("Username: " + USERNAME_RESPONSE)));
		t.addElement ( tr );
		
		tr = new TR();
		tr.addElement(new TD().addElement( new StringElement("Color: " + COLOR_RESPONSE)));
		t.addElement ( tr );
		
		tr = new TR();
		tr.addElement(new TD().addElement( new StringElement("Password: " + USERS.get(USERNAME_RESPONSE).toString())));
		t.addElement(tr);
			
		ec.addElement(t);
		
		if(USERNAME_RESPONSE.equals("admin") && COLOR_RESPONSE.equals("green"))
		{
			makeSuccess(s);
		}
		else if(!USERNAME_RESPONSE.equals("webgoat") && USERS.containsKey(USERNAME_RESPONSE))
		{
			s.setMessage("Close. Now try to get the password of a privileged account.");
		}
		return ec;
	}
	
	/**
	 *  Description of the Method
	 *
	 * @param  s  Description of the Parameter
	 * @return    Description of the Return Value
	 */
	protected Element createContent( WebSession s )
	{
		ElementContainer ec = new ElementContainer();
		String username = "";
		String color = "";
		
		color = s.getParser().getStringParameter(COLOR, "");
		
		if(color.length() > 0)
			STAGE = 2;
		else
			STAGE = 1;
		
		
		if(USERS.size() == 0)
		{
			populateTables();
		}
		
		if(STAGE == 2)
		{
			color = s.getParser().getStringParameter(COLOR, "");
			
			if(COLORS.get(USERNAME_RESPONSE).equals(color))
			{
				STAGE = 1;
				COLOR_RESPONSE = color;
				ec.addElement(doStage3(s));
			}
			else
			{
				s.setMessage("Incorrect response for " + USERNAME_RESPONSE + ". Please try again!");
				ec.addElement(doStage2(s));
			}
		}
		else if(STAGE == 1)
		{				
			username = s.getParser().getStringParameter(USERNAME, "");
			
			if(USERS.containsKey(username))
			{
				STAGE = 2;
				USERNAME_RESPONSE = username;
				ec.addElement(doStage2(s));
			}
			else
			{
				if(username.length() > 0)
					s.setMessage("Not a valid username. Please try again");
				ec.addElement(doStage1(s));
			}
		}
		else
		{
			ec.addElement(doStage1(s));
			STAGE = 1;
		}
		
		return ec;
	}


	/**
	 *  Gets the category attribute of the ForgotPassword object
	 *
	 * @return    The category value
	 */
	protected Category getDefaultCategory()
	{

		return AbstractLesson.A3;
	}


	/**
	 *  Gets the hints attribute of the HelloScreen object
	 *
	 * @return    The hints value
	 */
	public List getHints()
	{
		List<String> hints = new ArrayList<String>();
		hints.add( "There is no lock out policy in place, brute force your way!" );
		hints.add( "Try using usernames you might encounter throughout WebGoat." );
		hints.add( "There are only so many possible colors, can you guess one?" );
		hints.add( "The administrative account is \"admin\"" );

		return hints;
	}




	private final static Integer DEFAULT_RANKING = new Integer(15);

	protected Integer getDefaultRanking()
	{
		return DEFAULT_RANKING;
	}
	
	/**
	 *  Gets the title attribute of the HelloScreen object
	 *
	 * @return    The title value
	 */
	public String getTitle()
	{
		return ( "Forgot Password" );
	}
	
	
	public Element getCredits()
	{
		return super.getCustomCredits("The Intern", ASPECT_LOGO);
	}
}

