/**
*
*/
package org.owasp.webgoat.lessons;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.io.IOException;
import java.io.FileInputStream;
import org.xml.sax.InputSource;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathFactory;
import javax.xml.xpath.XPathExpressionException;
import org.apache.ecs.Element;
import org.apache.ecs.ElementContainer;
import org.apache.ecs.StringElement;
import org.apache.ecs.html.IMG;
import org.apache.ecs.html.Input;
import org.apache.ecs.html.P;
import org.apache.ecs.html.TD;
import org.apache.ecs.html.TR;
import org.apache.ecs.html.TH;
import org.apache.ecs.html.Table;
import org.apache.ecs.html.H1;
import org.apache.ecs.html.BR;
import org.apache.ecs.html.B;
import org.apache.ecs.html.PRE;
import org.apache.ecs.HtmlColor;
import org.owasp.webgoat.session.WebSession;
import org.owasp.webgoat.session.ECSFactory;
/*******************************************************************************
*
*
* This file is part of WebGoat, an Open Web Application Security Project
* utility. For details, please see http://www.owasp.org/
*
* Copyright (c) 2002 - 2007 Bruce Mayhew
*
* This program 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 2 of the License, or (at your option) any later
* version.
*
* This program 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
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Getting Source ==============
*
* Source for this application is maintained at code.google.com, a repository
* for free software projects.
*
* For details, please see http://code.google.com/p/webgoat/
*
* @author Sherif Koussa <a href="http://www.macadamian.com">Macadamian Technologies.</a>
* @created November 28, 2006
*/
public class XPATHInjection extends LessonAdapter
{
private final static Integer DEFAULT_RANKING = new Integer(74);
private final static String USERNAME = "Username";
private final static String PASSWORD = "Password";
private final static IMG MAC_LOGO = new IMG("images/logos/macadamian.gif").setAlt(
"Macadamian Technologies").setBorder(0).setHspace(0).setVspace(0);
protected Element createContent(WebSession s)
{
NodeList nodes = null;
ElementContainer ec = new ElementContainer();
try
{
ec.addElement(new BR().addElement(new H1()
.addElement("Welcome to WebGoat employee intranet")));
ec.addElement(new BR());
Table t1 = new Table().setCellSpacing(0).setCellPadding(0)
.setBorder(0).setWidth("90%").setAlign("center");
TR tr = new TR();
tr
.addElement(new TH()
.addElement(
"Please confirm your username and password before viewing your profile.")
.setColSpan(2).setAlign("left"));
t1.addElement(tr);
tr = new TR();
tr.addElement(new TD().addElement("*Required Fields").setWidth(
"30%").setColSpan(2).setAlign("left"));
t1.addElement(tr);
tr = new TR();
tr.addElement(new TD().addElement(" ").setWidth("30%")
.setColSpan(2).setAlign("left"));
t1.addElement(tr);
tr = new TR();
tr.addElement(new TD(new B(new StringElement("*User Name: "))));
Input input1 = new Input(Input.TEXT, USERNAME, "");
tr.addElement(new TD(input1));
t1.addElement(tr);
tr = new TR();
tr.addElement(new TD(new B(new StringElement("*Password: "))));
Input input2 = new Input(Input.PASSWORD, PASSWORD, "");
tr.addElement(new TD(input2));
t1.addElement(tr);
Element b = ECSFactory.makeButton("Submit");
t1.addElement(new TR(new TD(b)));
ec.addElement(t1);
String username = s.getParser().getRawParameter(USERNAME, "");
if (username == null || username.length() == 0)
{
ec.addElement(new P().addElement(new StringElement(
"Username is a required field")));
return ec;
}
String password = s.getParser().getRawParameter(PASSWORD, "");
if (password == null || password.length() == 0)
{
ec.addElement(new P().addElement(new StringElement(
"Password is a required field")));
return ec;
}
String dir = s.getContext().getRealPath(
"/lessons/XPATHInjection/EmployeesData.xml");
File d = new File(dir);
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
InputSource inputSource = new InputSource(new FileInputStream(d));
String expression = "/employees/employee[loginID/text()='"
+ username + "' and passwd/text()='" + password + "']";
nodes = (NodeList) xPath.evaluate(expression, inputSource,
XPathConstants.NODESET);
int nodesLength = nodes.getLength();
Table t2 = null;
if (nodesLength > 0)
{
t2 = new Table().setCellSpacing(0).setCellPadding(0).setBorder(
1).setWidth("90%").setAlign("center");
tr = new TR();
tr.setBgColor(HtmlColor.GRAY);
tr.addElement(new TD().addElement("Username"));
tr.addElement(new TD().addElement("Account No."));
tr.addElement(new TD().addElement("Salary"));
t2.addElement(tr);
}
for (int i = 0; i < nodesLength; i++)
{
Node node = nodes.item(i);
String[] arrTokens = node.getTextContent()
.split("[\\t\\s\\n]+");
tr = new TR();
tr.addElement(new TD().addElement(arrTokens[1]));
tr.addElement(new TD().addElement(arrTokens[2]));
tr.addElement(new TD().addElement(arrTokens[4]));
t2.addElement(tr);
}
if (nodes.getLength() > 1)
{
makeSuccess(s);
}
if (t2 != null)
{
ec.addElement(new PRE());
ec.addElement(t2);
}
}
catch (IOException e)
{
s.setMessage("Error generating " + this.getClass().getName());
e.printStackTrace();
}
catch (IllegalArgumentException e)
{
s.setMessage("Error generating " + this.getClass().getName());
e.printStackTrace();
}
catch (XPathExpressionException e)
{
s.setMessage("Error generating " + this.getClass().getName());
e.printStackTrace();
}
return ec;
}
public Element getCredits()
{
return super.getCustomCredits("Created by Sherif Koussa ", MAC_LOGO);
}
protected Category getDefaultCategory()
{
return Category.INJECTION;
}
protected boolean getDefaultHidden()
{
// TODO Auto-generated method stub
return false;
}
protected Integer getDefaultRanking()
{
return DEFAULT_RANKING;
}
protected List<String> getHints(WebSession s)
{
// TODO Auto-generated method stub
List<String> hints = new ArrayList<String>();
hints.add("Remember that the data is stored in XML format.");
hints.add("The system is using XPath to query.");
hints
.add("XPath is almost the same thing as SQL, the same hacking techniques apply too.");
hints
.add("Try username: Smith' or 1=1 or 'a'='a and a password: anything ");
return hints;
}
public String getTitle()
{
return "XPATH Injection";
}
}