Tuesday, May 26, 2009

Redirect all traffic from port 80 to port 443 https in Apache2

Force an SSL connection and redirect all traffic from port 80 (HTTP) to port 443 (HTTPS), use this instead:
(assuming: Apache2 Listen on 80 and 8080)


RewriteEngine on
RewriteCond %{SERVER_PORT} ^80$
RewriteRule ^(.*)$ https://%{SERVER_NAME}$1 [L,R]

RewriteCond %{SERVER_PORT} ^8080$
RewriteRule ^(.*)$ https://%{SERVER_NAME}$1 [L,R]

RewriteLog "logs/rewrite.log"
RewriteLogLevel 2

Wednesday, May 6, 2009

Struts2 Security Code Action

package com.ozview.struts2.action;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Random;

import javax.imageio.ImageIO;

import org.apache.log4j.Logger;

/**
*
* SecurityImageCodeAction.
*
*/
public class SecurityImageCodeAction extends BaseAction
{
/** The image font. * */
private static Font imageFont = new Font("Arial Bold", Font.BOLD, 24);

/** The InputStream imageStream. * */
protected InputStream imageStream;

/** The logger log. * */
private final Logger log = Logger.getLogger(this.getClass().getName());

/**
* Generate the security image code.
*
* @return SUCCESS if there is no error.
*/
public String genSecurityImageCode()
{
try
{
ByteArrayOutputStream output = new ByteArrayOutputStream();
String randomCode = generateImageCode(output);
// store the random number in session.
storeInSession(SECURITY_CODE, randomCode);
this.imageStream = new ByteArrayInputStream(output.toByteArray());
output.close();
} catch (Exception e)
{
removeFromSession(SECURITY_CODE);
log.error("generating the security code error");
return ERROR;
}
return SUCCESS;
}

/**
* Generate the Buffered image.
* @param output The ByteArrayOutputStream output.
* @return a SecurityImageCode which contians a random characters and an image.
*/
protected String generateImageCode(ByteArrayOutputStream output)
{
//image size
int width = 150, height = 30;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
Graphics g = image.getGraphics();
Random random = new Random();
//g.setColor(getRandColor(200, 250));
//set the background color
g.setColor(new Color(230,241,241));
g.fillRect(1, 1, width - 1, height - 1);
g.setColor(new Color(102, 102, 102));
g.drawRect(0, 0, width - 1, height - 1);
g.setFont(imageFont);
g.setColor(getRandColor(160, 200));
for (int i = 0; i < 155; i++)
{
int x = random.nextInt(width - 1);
int y = random.nextInt(height - 1);
int xl = random.nextInt(6) + 1;
int yl = random.nextInt(12) + 1;
g.drawLine(x, y, x + xl, y + yl);
}
for (int i = 0; i < 70; i++)
{
int x = random.nextInt(width - 1);
int y = random.nextInt(height - 1);
int xl = random.nextInt(12) + 1;
int yl = random.nextInt(6) + 1;
g.drawLine(x, y, x - xl, y - yl);
}

String sRand = "";
for (int i = 0; i < 8; i++)
{
String tmp = getRandomChars();
sRand += tmp;
// g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 +
//random.nextInt(110)));
g.setColor(new Color(220, 220, 220));
g.drawString(tmp, 17 * i + 9, 22);
}
g.dispose();
try
{
ImageIO.write(image, "jpg", output);
} catch (IOException e)
{
log.error("Generating the security image code error, " + e.getMessage());
}
return sRand;
}

/**
* Get random color.
*
* @param fc
* a int fc.
* @param bc
* a int bc.
* @return a Random color.
*/
protected Color getRandColor(int fc, int bc)
{
Random random = new Random();
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
}

/**
* Get a random characters.
*
* @return a random characters.
*/
protected String getRandomChars()
{
int rand = (int) Math.round(Math.random() * 2);
long itmp = 0;
char ctmp = '\u0000';
switch (rand)
{
case 1:
itmp = Math.round(Math.random() * 25 + 65);
ctmp = (char) itmp;
return String.valueOf(ctmp);
case 2:
itmp = Math.round(Math.random() * 25 + 97);
ctmp = (char) itmp;
return String.valueOf(ctmp);
default:
itmp = Math.round(Math.random() * 9);
return String.valueOf(itmp);
}
}

/**
* Set the InputSteam imageStream.
*
* @param imageStream
* The InputSteam imageStream to be set.
*/
public void setImageStream(InputStream imageStream)
{
this.imageStream = imageStream;
}

/**
* Get the InputSteam imageStream.
*
* @return An InputSteam imageStream.
*/
public InputStream getImageStream()
{
return imageStream;
}
}

Add the following lines into struts.xml file:



Using the Security Code in the JSP file:

How to ceate a Security Code

package com.ozview;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Random;

import javax.imageio.ImageIO;

public class Test
{
/** The image font. * */
private static Font imageFont = new Font("Arial Bold", Font.BOLD, 24);



protected String generateImageCode(ByteArrayOutputStream output)
{
int width = 150, height = 30;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
Graphics g = image.getGraphics();
Random random = new Random();
//g.setColor(getRandColor(200, 250));
g.setColor(new Color(230, 241, 241));
g.fillRect(1, 1, width - 1, height - 1);
g.setColor(new Color(102, 102, 102));
g.drawRect(0, 0, width - 1, height - 1);
g.setFont(imageFont);
g.setColor(getRandColor(160, 200));
for (int i = 0; i < 155; i++)
{
int x = random.nextInt(width - 1);
int y = random.nextInt(height - 1);
int xl = random.nextInt(6) + 1;
int yl = random.nextInt(12) + 1;
g.drawLine(x, y, x + xl, y + yl);
}
for (int i = 0; i < 70; i++)
{
int x = random.nextInt(width - 1);
int y = random.nextInt(height - 1);
int xl = random.nextInt(12) + 1;
int yl = random.nextInt(6) + 1;
g.drawLine(x, y, x - xl, y - yl);
}

String sRand = "";
for (int i = 0; i < 8; i++)
{
String tmp = getRandomChars();
sRand += tmp;
//g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
g.setColor(new Color(0, 0, 255));
g.drawString(tmp, 17 * i + 9, 22);
}
g.dispose();
try
{
File imagefile = new File("securitycode.jpg");
ImageIO.write(image, "jpg", imagefile);
} catch (IOException e)
{
System.err.print("Generating the security image code error, " + e.getMessage());
}
return sRand;
}

/**
* Get random color.
*
* @param fc
* a int fc.
* @param bc
* a int bc.
* @return a Random color.
*/
protected Color getRandColor(int fc, int bc)
{
Random random = new Random();
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
}

/**
* Get a random characters.
*
* @return a random characters.
*/
protected String getRandomChars()
{
int rand = (int) Math.round(Math.random() * 2);
long itmp = 0;
char ctmp = '\u0000';
switch (rand)
{
case 1:
itmp = Math.round(Math.random() * 25 + 65);
ctmp = (char) itmp;
return String.valueOf(ctmp);
case 2:
itmp = Math.round(Math.random() * 25 + 97);
ctmp = (char) itmp;
return String.valueOf(ctmp);
default:
itmp = Math.round(Math.random() * 9);
return String.valueOf(itmp);
}
}

public static void main(String [] args) {
Test test = new Test();
ByteArrayOutputStream output = new ByteArrayOutputStream();
String randomCode = test.generateImageCode(output);

System.out.println(randomCode);


}

}