authenticatorwindow.java

这是一个基于java编写的torrent的P2P源码

			Debug.printStackTrace( e );
			
			return( null );
		}
		sem.reserve();
		
		String	user 	= dialog[0].getUsername();
		String	pw		= dialog[0].getPassword();
		String	persist	= dialog[0].savePassword()?"true":"false";
		
		if ( user == null ){
			
			return( null );
		}
		
		return( new String[]{ user, pw == null?"":pw, persist });
	}
	
	protected class
	authDialog
	{
		private Shell			shell;
		private AESemaphore	sem;
		
		private String		username;
		private String		password;
		private	boolean		persist;
		
		protected
		authDialog(
			AESemaphore		_sem,
			Display			display,
			String			realm,
			String			tracker,
			String			torrent_name )
		{
			sem	= _sem;
			
			if ( display.isDisposed()){
				
				sem.release();
				
				return;
			}
			
	 		shell = new Shell (display,SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
	 	
	 		if(! Constants.isOSX) {
	 		  shell.setImage(ImageRepository.getImage("azureus"));
	 		}
		 	Messages.setLanguageText(shell, "authenticator.title");
    		
		 	GridLayout layout = new GridLayout();
		 	layout.numColumns = 3;
		        
		 	shell.setLayout (layout);
	    
		 	GridData gridData;
	    
	    		// realm
	    		
			Label realm_label = new Label(shell,SWT.NULL);
			Messages.setLanguageText(realm_label, "authenticator.realm");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 1;
			realm_label.setLayoutData(gridData);
			
			Label realm_value = new Label(shell,SWT.NULL);
			realm_value.setText(realm.replaceAll("&", "&&"));
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 2;
			realm_value.setLayoutData(gridData);
	    
	    		// tracker
			
			Label tracker_label = new Label(shell,SWT.NULL);
			Messages.setLanguageText(tracker_label, "authenticator.tracker");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 1;
			tracker_label.setLayoutData(gridData);
			
			Label tracker_value = new Label(shell,SWT.NULL);
			tracker_value.setText(tracker.replaceAll("&", "&&"));
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 2;
			tracker_value.setLayoutData(gridData);
	    		
			if ( torrent_name != null ){
				
				Label torrent_label = new Label(shell,SWT.NULL);
				Messages.setLanguageText(torrent_label, "authenticator.torrent");
				gridData = new GridData(GridData.FILL_BOTH);
				gridData.horizontalSpan = 1;
				torrent_label.setLayoutData(gridData);
				
				Label torrent_value = new Label(shell,SWT.NULL);
				torrent_value.setText(torrent_name.replaceAll("&", "&&"));
				gridData = new GridData(GridData.FILL_BOTH);
				gridData.horizontalSpan = 2;
				torrent_value.setLayoutData(gridData);
			}
	    		// user
	    		
			Label user_label = new Label(shell,SWT.NULL);
			Messages.setLanguageText(user_label, "authenticator.user");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 1;
			user_label.setLayoutData(gridData);
	
			final Text user_value = new Text(shell,SWT.BORDER);
			user_value.setText("");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 2;
			user_value.setLayoutData(gridData);

			user_value.addListener(SWT.Modify, new Listener() {
			   public void handleEvent(Event event) {
				 username = user_value.getText();
			   }});

				// password
	    		
			Label password_label = new Label(shell,SWT.NULL);
			Messages.setLanguageText(password_label, "authenticator.password");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 1;
			password_label.setLayoutData(gridData);
			
			final Text password_value = new Text(shell,SWT.BORDER);
			password_value.setEchoChar('*');
			password_value.setText("");
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 2;
			password_value.setLayoutData(gridData);

			password_value.addListener(SWT.Modify, new Listener() {
			   public void handleEvent(Event event) {
				 password = password_value.getText();
			   }});
			   
			// persist
			
			Label blank_label = new Label(shell,SWT.NULL);
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 1;
			blank_label.setLayoutData(gridData);
			
		    final Button checkBox = new Button(shell, SWT.CHECK);
		    checkBox.setText(MessageText.getString( "authenticator.savepassword" ));
			gridData = new GridData(GridData.FILL_BOTH);
			gridData.horizontalSpan = 2;
			checkBox.setLayoutData(gridData);
			checkBox.addListener(SWT.Selection,new Listener() {
		  		public void handleEvent(Event e) {
			 		persist = checkBox.getSelection();
		   		}
			 });
			
			// line
			
			Label labelSeparator = new Label(shell,SWT.SEPARATOR | SWT.HORIZONTAL);
			gridData = new GridData(GridData.FILL_HORIZONTAL);
			gridData.horizontalSpan = 3;
			labelSeparator.setLayoutData(gridData);
			
				// buttons
				
			new Label(shell,SWT.NULL);

			Button bOk = new Button(shell,SWT.PUSH);
		 	Messages.setLanguageText(bOk, "Button.ok");
		 	gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_END | GridData.HORIZONTAL_ALIGN_FILL);
		 	gridData.grabExcessHorizontalSpace = true;
		 	gridData.widthHint = 70;
		 	bOk.setLayoutData(gridData);
		 	bOk.addListener(SWT.Selection,new Listener() {
		  		public void handleEvent(Event e) {
			 		close(true);
		   		}
			 });
	    
		 	Button bCancel = new Button(shell,SWT.PUSH);
		 	Messages.setLanguageText(bCancel, "Button.cancel");
		 	gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
		 	gridData.grabExcessHorizontalSpace = false;
		 	gridData.widthHint = 70;
		 	bCancel.setLayoutData(gridData);    
		 	bCancel.addListener(SWT.Selection,new Listener() {
		 		public void handleEvent(Event e) {
			 		close(false);
		   		}
		 	});
	    
			shell.setDefaultButton( bOk );
			
			shell.addListener(SWT.Traverse, new Listener() {	
				public void handleEvent(Event e) {
					if ( e.character == SWT.ESC){
						close( false );
					}
				}
			});

		
		 	shell.pack ();
		 	
			Utils.centreWindow( shell );

			shell.open ();   
		}
   
		protected void
		close(
			boolean		ok )
	 	{
	 		if ( ok ){
	 			
	 			if ( username == null ){
	 				
	 				username = "";
	 			}
	 			
	 			if ( password == null ){
	 				
	 				password = "";
	 			}
	 			
	 		}else{
	 			
	 			username	= null;
	 			password	= null;
	 		}
	 		
	 		shell.dispose();
	 		sem.release();
	 	}
	 	
	 	protected String
	 	getUsername()
	 	{
	 		return( username );
	 	}
	 	
	 	protected String
	 	getPassword()
	 	{
	 		return( password );
	 	}
	 	
	 	protected boolean
	 	savePassword()
	 	{
	 		return( persist );
	 	}
	}
	
	protected class
	authCache
	{
		private String					key;
		private PasswordAuthentication	auth;
		private boolean					persist;
		private int						life = 5;
		private boolean					succeeded;
		
		protected
		authCache(
			String						_key,
			PasswordAuthentication		_auth,
			boolean						_persist )
		{
			key			= _key;
			auth		= _auth;
			persist		= _persist;
		}
		
		protected String
		getKey()
		{
			return( key );
		}
		
		protected boolean
		isPersistent()
		{
			return( persist );
		}
		
		protected void
		setOutcome(
			boolean	success)
		{
			if ( success ){
				
				succeeded	= true;
				
			}else{
				
				if ( persist ){
					
					persist	= false;
					
					saveAuthCache();
				}
				
				if ( !succeeded ){
					
					auth	= null;
				}
			}
		}
		
		protected PasswordAuthentication
		getAuth()
		{
			if ( succeeded ){
				
				return( auth );
			}
			
			life--;
			
			if ( life >= 0 ){
				
				return( auth );
			}
			
			if ( persist ){
				
				persist	= false;
				
				saveAuthCache();
			}
			
			return( null );
		}
	}
		
}