Make use of the filetransfer classes

2 files changed, 174 insertions, 29 deletions

diff --git a/src/main/java/org/openslx/imagemaster/serverconnection/ConnectionHandler.java b/src/main/java/org/openslx/imagemaster/serverconnection/ConnectionHandler.java
new file mode 100644
index 0000000..498e058
--- /dev/null
+++ b/src/main/java/org/openslx/imagemaster/serverconnection/ConnectionHandler.java
@@ -0,0 +1,135 @@
+package org.openslx.imagemaster.serverconnection;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+
+import org.apache.log4j.Logger;
+import org.openslx.filetransfer.Downloader;
+import org.openslx.filetransfer.IncomingEvent;
+import org.openslx.filetransfer.Listener;
+import org.openslx.filetransfer.Uploader;
+import org.openslx.imagemaster.Globals;
+import org.openslx.imagemaster.db.DbImage;
+import org.openslx.imagemaster.util.Tuple;
+
+/**
+ * Class to handle all incoming and outgoing connections.
+ */
+public class ConnectionHandler implements IncomingEvent
+{
+	private static Logger log = Logger.getLogger( ConnectionHandler.class );
+	private static SSLContext sslContext;
+	/**
+	 * Key: token, 
+	 * Value: Tuple of the listener and the filepath.
+	 */
+	private static Map<String, Tuple<Thread, String>> activeListeners = new HashMap<>();
+	private static List<Integer> possiblePorts = new LinkedList<>();
+	private static IncomingEvent eventHandler = new ConnectionHandler();
+	
+	static {
+		possiblePorts.add( 1234 );
+		possiblePorts.add( 1235 );
+		possiblePorts.add( 1236 );
+		possiblePorts.add( 1237 );
+		possiblePorts.add( 1238 );
+		possiblePorts.add( 1239 );
+		possiblePorts.add( 1240 );
+		possiblePorts.add( 1241 );
+		possiblePorts.add( 1242 );
+		possiblePorts.add( 1243 );
+		possiblePorts.add( 1244 );
+		
+		try {
+   		String pathToKeyStore = Globals.getSslKeystoreFile();
+   	   char[] passphrase = Globals.getSslKeystorePassword().toCharArray();
+   	   KeyStore keystore = KeyStore.getInstance("JKS");
+   	   keystore.load(new FileInputStream(pathToKeyStore), passphrase);
+   	   KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
+   	   kmf.init(keystore, passphrase);
+   	   sslContext = SSLContext.getInstance("SSLv3");
+   	   KeyManager[] keyManagers = kmf.getKeyManagers();
+   	   
+   	   sslContext.init(keyManagers, null, null);
+		} catch (FileNotFoundException e) {
+			log.error( "Could not find keystore." );
+		} catch ( KeyStoreException e ) {
+			log.error( "KeyStore implemenation not supported." );
+		} catch ( NoSuchAlgorithmException e ) {
+			log.error( "Could not find such Algorithm" );
+		} catch ( CertificateException e ) {
+			log.error( "Certificate unvalid." );
+		} catch ( IOException e ) {
+			log.error( "Could not read keyfile" );
+		} catch ( UnrecoverableKeyException e ) {
+			log.error( "Key in keystore is not valid" );
+		} catch ( KeyManagementException e ) {
+			log.error( "Context initialization failed." );
+		}
+	}
+	
+	public static void addConnection(String token, String filepath)
+	{
+		int port = possiblePorts.remove( 0 );
+		Listener listener = new Listener( eventHandler, sslContext, port );
+		
+		listener.start();
+		
+		activeListeners.put( token, new Tuple<Thread, String>(listener, filepath) );
+	}
+	
+	public static boolean hasConnection( String token )
+	{
+		return activeListeners.containsKey( token );
+	}
+	
+	public static void removeConnection( String token )
+	{
+		Listener l = (Listener)activeListeners.remove( token ).x;
+		l.interrupt();
+		possiblePorts.add(l.getPort());		// add port back to possible's list
+	}
+
+	/**
+	 * Server is uploading - client is downloading!
+	 */
+	@Override
+	public void incomingUploader( Uploader uploader ) throws IOException
+	{
+		// TODO: Handle incoming uploads (client download requests)
+	}
+	
+	/**
+	 * Server is downloading - client is uploading!
+	 */
+	@Override
+	public void incomingDownloader( Downloader downloader ) throws IOException
+	{
+		// try to read meta data
+		while (downloader.readMetaData()) {
+			// check token to identify the client
+			String token = downloader.getToken();
+			if (!activeListeners.containsKey( token )) {
+				return;
+			}
+			downloader.setOutputFilename( activeListeners.get( token ).y );
+			downloader.readBinary();
+			downloader.close();
+		}
+	}
+}
diff --git a/src/main/java/org/openslx/imagemaster/serverconnection/ImageProcessor.java b/src/main/java/org/openslx/imagemaster/serverconnection/ImageProcessor.java
index d4ae717..c7ee973 100644
--- a/src/main/java/org/openslx/imagemaster/serverconnection/ImageProcessor.java
+++ b/src/main/java/org/openslx/imagemaster/serverconnection/ImageProcessor.java
@@ -14,6 +14,7 @@ import org.openslx.imagemaster.util.RandomString;
 
 public class ImageProcessor
 {
+
 	private static Logger log = Logger.getLogger( ImageProcessor.class );
 
 	/**
@@ -22,14 +23,15 @@ public class ImageProcessor
 	private static final int AMOUNT = 20;
 	/**
 	 * The uploading images.
-	 * Key:		imageUUID, 
-	 * Value:	imageInfos
+	 * Key: imageUUID,
+	 * Value: imageInfos
 	 */
 	private static HashMap<String, ImageInfos> uploadingImages = new HashMap<>();
 
 	/**
 	 * Checks if this image is already uploading and returns a new list with missing blocks if so.
 	 * Puts the new image into processing list else.
+	 * 
 	 * @param serverSessionId The uploading server
 	 * @param imageData The data of the image
 	 * @return
@@ -38,9 +40,9 @@ public class ImageProcessor
 	{
 		// check image data
 		// TODO: do security checks
-		
+
 		String uuid = imageData.uuid;
-		
+
 		// check if image is already uploading
 		if ( uploadingImages.containsKey( uuid ) ) {
 			List<Integer> missing = getMissingBlocks( uuid, AMOUNT );
@@ -52,19 +54,20 @@ public class ImageProcessor
 			uploadingImages.get( uuid ).setLastSentBlocks( missing );
 			return new UploadInfos( uploadingImages.get( uuid ).getToken(), missing );
 		}
-		
+
 		// insert new image and generate token
-		synchronized (uploadingImages) {
-			int nBlocks = (int)Math.ceil(imageData.fileSize / Globals.blockSize);
+		synchronized ( uploadingImages ) {
+			int nBlocks = (int)Math.ceil( imageData.fileSize / Globals.blockSize );
 			List<Integer> allBlocks = new LinkedList<>();
-			for (int i = 0; i < nBlocks; i++) {			// fill empty list with all block numbers
+			for ( int i = 0; i < nBlocks; i++ ) {			// fill empty list with all block numbers
 				allBlocks.add( i );
 			}
 			String token = RandomString.generate( 100, false );
-			// TODO: init updownloader class
-			uploadingImages.put( uuid, new ImageInfos(token, allBlocks, serverSessionId, new Timestamp(System.currentTimeMillis())) );
-			DbImage.insert( imageData, System.currentTimeMillis(), token, allBlocks, serverSessionId );
-			
+			String filepath = Globals.getImageDir() + "/" + uuid + ".vmdk";
+			ConnectionHandler.addConnection( token, filepath );
+			uploadingImages.put( uuid, new ImageInfos( token, allBlocks, serverSessionId, new Timestamp( System.currentTimeMillis() ) ) );
+			DbImage.insert( imageData, System.currentTimeMillis(), token, allBlocks, serverSessionId, filepath );
+
 			List<Integer> missing = getMissingBlocks( uuid, AMOUNT );
 			if ( missing.isEmpty() ) {
 				uploadDone( uuid );
@@ -73,51 +76,58 @@ public class ImageProcessor
 			return new UploadInfos( token, missing );
 		}
 	}
-	
+
 	/**
 	 * Returns a specified number of missing blocks.
+	 * 
 	 * @param imageUUID The image of which you want to get the missing blocks from
 	 * @param amount The amount of blocks that you want to get
-	 * @return The missing blocksht
+	 * @return The missing blocks
 	 */
 	private static List<Integer> getMissingBlocks( String imageUUID, int amount )
 	{
 		List<Integer> list = uploadingImages.get( imageUUID ).getMissingBlocks();
 		List<Integer> result = new LinkedList<>();
-		
+
 		if ( amount > list.size() )
 			amount = list.size();
-		
+
 		for ( int i = 0; i < amount; i++ ) {
 			result.add( list.get( i ) );
 		}
 		return result;
 	}
-	
+
 	/**
 	 * Is triggered when an upload of an image is done.
 	 * Removes image from process list, updates db entry and moves file on hard drive.
+	 * 
 	 * @param uuid
 	 */
-	private static void uploadDone( String uuid ) {
-		synchronized(uploadingImages) {
-			uploadingImages.remove( uuid );
-			DbImage.updateMissingBlocks( uuid, null );
+	private static void uploadDone( String uuid )
+	{
+		String token;
+		synchronized ( uploadingImages ) {
+			token = uploadingImages.remove( uuid ).getToken();
 		}
+		DbImage.updateMissingBlocks( uuid, null );
 		// file was already downloaded in the right location by the updownloader class.
+		// remove the connection so that it can be used by a new client
+		ConnectionHandler.removeConnection( token );
 	}
-	
+
 	/**
 	 * Checks pending uploads in database and adds them to process list again.
 	 */
-	public static void checkUploading() {
+	public static void checkUploading()
+	{
 		List<DbImage> list = DbImage.getUploadingImages();
-		for (DbImage image : list) {
-			// TODO: init updownloader class
-			String token = RandomString.generate( 100, false );
-			ImageInfos infos = new ImageInfos(token, image.missingBlocks, image.serverSessionId, image.timestamp);
-			uploadingImages.put( image.UUID, infos);
+		for ( DbImage image : list ) {
+			String token = image.token;
+			ConnectionHandler.addConnection( token, image.imagePath );
+			ImageInfos infos = new ImageInfos( token, image.missingBlocks, image.serverSessionId, image.timestamp );
+			uploadingImages.put( image.UUID, infos );
 		}
-		log.info("Added " + list.size() + " pending upload(s) to process list again.");
+		log.info( "Added " + list.size() + " pending upload(s) to process list again." );
 	}
 }