SFTP File Service

The SFTP File server is used to provide the Android App a Way to download map files and gives the Controller access to the Service. The Service is not used for the Download over the official OHDM-Website.

Used Dependencies:

• Apache MINA (SFTP for the Distribution of said map-files)

Variables

Name	Type	Standard Value	Description	Authors Note
sshServer	SshServer	null	since sftp is based on ssh , we're using an base ssh server
port	int	null (defined in Constructor)	the port, that will be used to access
standardUser	SftpUser	null (defined in Constructor)	standard user for the access from the app (name and password defined in the init file)
controller	SftpUser	null (defined in Constructor)	controller access for the controller (name and password constant)
sharePath	String	null (defined in Constructor)	path for the app access
msgPath	String	null (defined in Constructor)	path for the controller msg
isRunning	boolean	false	shows, if the SFTP Server Thread is running
keySaveFilePath	String (static)	null (defined in Constructor)	the path for the saveFile for the keyFile ( for more information, look up on how sftp works)
sftpCommandFactory	List<NamedFactory>	null (defined in set-up)	command factory for the sftp server
userAuthFactories	List<NamedFactory>	null (defined in set-up)	User Authentication Factory for the ssh server
vfsf	VirtualFileSystemFactory	null (defined in set-up)	VirtualFileSystemFactory for the current access
namedFactoryList	List<NamedFactory>	null (defined in set-up)	namedFactoryList for the sshServer
TAG	String (static, final)	"SFTP-Service"	Tag for the Logger

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Constructor

Parameter List	Type	used for...	Authors Note
port	int	port
strUsername	String	standardUser
stdPasswd	String	standardUser
keySaveFilePath	String	keySaveFilePath
sharePath	String	sharePath
msgPath	String	msgPath

public SftpService(int port, String stdUsername, String stdPasswd, String keySaveFilePath, String sharePath, String msgPath) {
    SftpService.keySaveFilePath = keySaveFilePath;
    this.port = port;
    this.sharePath = sharePath;
    this.msgPath = msgPath;

    // setting up the standard user, these are the credentials used by the Android app
    standardUser = new SftpUser(stdUsername, stdPasswd);
    controller = new SftpUser("controller", "eqpS23PTagZgHmJcFQMBLgJv");

}

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The "run" Method

@Override
    public synchronized void run() {
        try {
            // setup for the sftp Server
            setup();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // setting the status to "running" 
        isRunning = true;
        try {
            wait();
        } catch (InterruptedException e) {
            Logger.instance.addLogEntry(LogType.INFO, TAG, "SftpService was interrupted adn needs to be restarted");
        }
    }

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Public Methods

Interface Methods :

Name	Parameter list	return Value	Description	Authors Note
stopThread	empty	void	method to stop the Service

Getter and Setter

no getter/setter

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Private Methods

Name	Parameter List	return Value	Description	Authors Note
setup	empty	void	Setup method for the ssh -> sftp server