com.compoze.util
Class TemporaryFileServer

java.lang.Object

  |

  +--com.compoze.util.TemporaryFileServer

public class TemporaryFileServer

extends java.lang.Object

This class is a server that listens for incoming requests to create and provide access to a temporary file. A new thread is created to handle each incoming request. The temporary file names may be either chosen by the client or generated by the server. When the name is chosen by the client, a unique temporary directory is created so that there will be no filename conflicts.

The process for connecting to the client is as follows:

1. Open the connection.
2. Present a header and a 64 byte random challenge to the client.
3. Verify that the client properly produces an SHA digest of the challenge and the password.
4. Accept the filename from the client or a request to generate one.
5. Create the local file and give the filename back to the client.
6. Write all data from the client into the file.
7. After receiving notification that the client is done, or after the connection to the client fails, delete the file.
8. Close the connection.

When running the main() method in this class, Java system properties may be specified to configure the server. The following table describes the effect of the different properties:

Property	Description	Required?	Default
password	Sets the password that clients must use to gain access to the server.	Yes	N/A
ip	Sets the IP address that the server listens on.	No	All local addresses
port	Sets the port that the server listens on.	No	2112
tempdir	Sets the location of the temporary directory.	No	java.io.tmpdir Java system property
log	Sets whether or not logging is enabled (true/false).	No	true

See Also:

TemporaryFileClient

Inner Class Summary

class

TemporaryFileServer.ConnectionThread This class implements a connection thread.

Field Summary

static int

DEFAULT_PORT

Constructor Summary

TemporaryFileServer(java.net.InetAddress listenAddress, int iPort, java.lang.String sPassword, java.io.File tempDir, boolean bLog, boolean bSSL)
Constructor.

Method Summary

static void	main(java.lang.String[] args) Main.
void	run() Runs the server.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PORT

public static final int DEFAULT_PORT

Constructor Detail

TemporaryFileServer

public TemporaryFileServer(java.net.InetAddress listenAddress,
                           int iPort,
                           java.lang.String sPassword,
                           java.io.File tempDir,
                           boolean bLog,
                           boolean bSSL)
                    throws java.security.NoSuchAlgorithmException,
                           java.io.UnsupportedEncodingException

Constructor.

Parameters:

listenAddress - the listen IP address

iPort - the server port

sPassword - the server password

bLog - if true, do logging

Throws:

java.security.NoSuchAlgorithmException - if algorithm not supported

java.io.UnsupportedEncodingException - if UTF-8 not supported

Method Detail

run

public void run()
         throws java.io.IOException

Runs the server.

Throws:

java.io.IOException - if the server could not listen on the specified IP or port

main

public static void main(java.lang.String[] args)

Main.

Parameters:

args - command line arguments