DO NOT REPLY [Bug 29526] - Cannot undeploy and deploy war file with on the same context

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http://issues.apache.org/bugzilla/show_bug.cgi?id=29526

Cannot undeploy and deploy war file with on the same context





------- Additional Comments From [EMAIL PROTECTED]  2004-06-21 13:56 -------
Remy,
I am also encountering this bug with my application. When undeploying it 
leaves a single jar that cannot be deleted. I've tracked it down to a single 
class within this jar that is causing the problem. Here is the code, can you 
think of any reason this class may be causing a problem?:

package com.company;

// ----------------------------------------------------------------------------
-
// StringEncrypter.java
// ----------------------------------------------------------------------------
-

// CIPHER / GENERATORS
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.KeyGenerator;

// KEY SPECIFICATIONS
import java.security.spec.KeySpec;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEParameterSpec;

// EXCEPTIONS
import java.security.InvalidAlgorithmParameterException;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import java.io.UnsupportedEncodingException;
import java.io.IOException;


/**
 * ----------------------------------------------------------------------------
-
 * The following example implements a class for encrypting and decrypting
 * strings using several Cipher algorithms. The class is created with a key and
 * can be used repeatedly to encrypt and decrypt strings using that key.
 * Some of the more popular algorithms are:
 *      Blowfish
 *      DES
 *      DESede
 *      PBEWithMD5AndDES
 *      PBEWithMD5AndTripleDES
 *      TripleDES
 * ----------------------------------------------------------------------------
-
 */

public class Encrypter {

    Cipher ecipher;
    Cipher dcipher;


    /**
     * Constructor used to create this object.  Responsible for setting
     * and initializing this object's encrypter and decrypter Chipher instances
     * given a Secret Key and algorithm.
     * @param key        Secret Key used to initialize both the encrypter and
     *                   decrypter instances.
     * @param algorithm  Which algorithm to use for creating the encrypter and
     *                   decrypter instances.
     */
    Encrypter(SecretKey key, String algorithm) {
        try {
            ecipher = Cipher.getInstance(algorithm);
            dcipher = Cipher.getInstance(algorithm);
            ecipher.init(Cipher.ENCRYPT_MODE, key);
            dcipher.init(Cipher.DECRYPT_MODE, key);
        } catch (Exception e) {
        }
    }


    /**
     * Constructor used to create this object.  Responsible for setting
     * and initializing this object's encrypter and decrypter Chipher instances
     * given a Pass Phrase and algorithm.
     * @param passPhrase Pass Phrase used to initialize both the encrypter and
     *                   decrypter instances.
     */
    Encrypter(String passPhrase) {

        // 8-bytes Salt
        byte[] salt = {
            (byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
            (byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
        };

        // Iteration count
        int iterationCount = 20;

        try {

            KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, 
iterationCount);
            SecretKey key = SecretKeyFactory.getInstance
("PBEWithMD5AndDES").generateSecret(keySpec);

            ecipher = Cipher.getInstance(key.getAlgorithm());
            dcipher = Cipher.getInstance(key.getAlgorithm());

            // Prepare the parameters to the cipthers
            AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, 
iterationCount);

            ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
            dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);

        } catch (Exception e) {
        }
    }


    /**
     * Takes a single String as an argument and returns an Encrypted version
     * of that String.
     * @param str String to be encrypted
     * @return <code>String</code> Encrypted version of the provided String
     */
    public String encrypt(String str) {
        try {
            // Encode the string into bytes using utf-8
            byte[] utf8 = str.getBytes("UTF8");

            // Encrypt
            byte[] enc = ecipher.doFinal(utf8);

            // Encode bytes to base64 to get a string
            return new sun.misc.BASE64Encoder().encode(enc);

        } catch (Exception e) {
        }
    }


    public static Encrypter getEncrypter()
    {
        return new Encrypter("Any old phrase");
    }

    /**
     * Takes a encrypted String as an argument, decrypts and returns the 
     * decrypted String.
     * @param str Encrypted String to be decrypted
     * @return <code>String</code> Decrypted version of the provided String
     */
    public String decrypt(String str) {

        try {

            // Decode base64 to get bytes
            byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str);

            // Decrypt
            byte[] utf8 = dcipher.doFinal(dec);

            // Decode using utf-8
            return new String(utf8, "UTF8");

        } catch (Exception e) {
        }
    }

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