eu.unicore.uftp.dpc

Class Utils

java.lang.Object

eu.unicore.uftp.dpc.Utils

public class Utils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	LOG_CLIENT
static String	LOG_SECURITY
static String	LOG_SERVER

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static void	closeQuietly(Closeable x)
static String	createFaultMessage(String message, Throwable cause)
static byte[]	createKey() create a new symmetric key
static byte[]	decodeBase64(String base64)
static String	encodeBase64(byte[] data)
static void	finishWriting(OutputStream target) properly flush the stream, which may be compressed and/or encrypted
static OutputStream	getCompressStream(OutputStream sink) returns a stream that compresses data
static InputStream	getDecompressStream(InputStream source) returns a stream that compresses data
static InputStream	getDecryptStream(InputStream source, byte[] key) returns a stream that decrypts data
static String	getDetailMessage(Throwable throwable)
static OutputStream	getEncryptStream(OutputStream sink, byte[] key) returns a stream that encrypts data
static ScheduledExecutorService	getExecutor()
static FileAccess	getFileAccess(org.apache.log4j.Logger logger)
static org.apache.log4j.Logger	getLogger(String prefix, Class<?> clazz)
static Set<String>	getWhiteList()
static String	hexString(byte[] bytes) converts the byte-array into a more user-friendly hex string
static String	hexString(MessageDigest digest) converts the message digest into a user-friendly hex string
static Cipher	makeDecryptionCipher(byte[] encodedKey) create a Cipher for decryption
static Cipher	makeEncryptionCipher(byte[] encodedKey) create a Cipher for encryption
static String	md5(byte[] data)
static String	md5(File file)
static List<String>	parseLine(String line)
static String	trim(String s) this removes leading and trailing \" characters
static void	writeToFile(String content, File target)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG_SERVER

public static final String LOG_SERVER

See Also:

Constant Field Values

LOG_CLIENT

public static final String LOG_CLIENT

See Also:

Constant Field Values

LOG_SECURITY

public static final String LOG_SECURITY

See Also:

Constant Field Values

Constructor Detail

Utils

public Utils()

Method Detail

getLogger

public static org.apache.log4j.Logger getLogger(String prefix,
                                                Class<?> clazz)

getDecryptStream

public static InputStream getDecryptStream(InputStream source,
                                           byte[] key)
                                    throws IOException

returns a stream that decrypts data

Parameters:

source - - the underlying physical stream

key - - encoded key

Returns:

Throws:

IOException

getEncryptStream

public static OutputStream getEncryptStream(OutputStream sink,
                                            byte[] key)
                                     throws IOException

returns a stream that encrypts data

Parameters:

sink - - the underlying physical stream

key - - encoded key

Returns:

Throws:

IOException

getCompressStream

public static OutputStream getCompressStream(OutputStream sink)
                                      throws IOException

returns a stream that compresses data

Parameters:

sink - - the underlying physical stream

key - - encoded key

Returns:

Throws:

IOException

getDecompressStream

public static InputStream getDecompressStream(InputStream source)
                                       throws IOException

returns a stream that compresses data

Parameters:

sink - - the underlying physical stream

key - - encoded key

Returns:

Throws:

IOException

encodeBase64

public static String encodeBase64(byte[] data)

decodeBase64

public static byte[] decodeBase64(String base64)

makeEncryptionCipher

public static Cipher makeEncryptionCipher(byte[] encodedKey)
                                   throws Exception

create a Cipher for encryption

Parameters:

encodedKey - - encoded key

Returns:

Throws:

Exception

makeDecryptionCipher

public static Cipher makeDecryptionCipher(byte[] encodedKey)
                                   throws Exception

create a Cipher for decryption

Parameters:

encodedKey - - encoded key

Returns:

Throws:

Exception

createKey

public static byte[] createKey()
                        throws InvalidKeySpecException,
                               NoSuchAlgorithmException,
                               NoSuchProviderException

create a new symmetric key

Returns:

the encoded key

Throws:

InvalidKeySpecException

NoSuchAlgorithmException

NoSuchProviderException

md5

public static String md5(File file)
                  throws Exception

Throws:

Exception

md5

public static String md5(byte[] data)

writeToFile

public static void writeToFile(String content,
                               File target)
                        throws IOException

Throws:

IOException

hexString

public static String hexString(MessageDigest digest)

converts the message digest into a user-friendly hex string

Parameters:

digest -

hexString

public static String hexString(byte[] bytes)

converts the byte-array into a more user-friendly hex string

Parameters:

bytes -

getExecutor

public static ScheduledExecutorService getExecutor()

getWhiteList

public static Set<String> getWhiteList()

getDetailMessage

public static String getDetailMessage(Throwable throwable)

createFaultMessage

public static String createFaultMessage(String message,
                                        Throwable cause)

trim

public static String trim(String s)

this removes leading and trailing \" characters

Parameters:

s -

Returns:

parseLine

public static List<String> parseLine(String line)

getFileAccess

public static FileAccess getFileAccess(org.apache.log4j.Logger logger)

finishWriting

public static void finishWriting(OutputStream target)
                          throws IOException

properly flush the stream, which may be compressed and/or encrypted

Parameters:

target -

Throws:

IOException

closeQuietly

public static void closeQuietly(Closeable x)