From 40d528627efc309681496b47d66558e15eb3fe5e Mon Sep 17 00:00:00 2001
From: Nils Schwabe
Date: Fri, 25 Apr 2014 14:28:56 +0200
Subject: Finally: Add _real_ server authentication. (this challengeresponse
 thing)

---
 .../openslx/imagemaster/ftp/MasterFtpServer.java   | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 src/main/java/org/openslx/imagemaster/ftp/MasterFtpServer.java

(limited to 'src/main/java/org/openslx/imagemaster/ftp/MasterFtpServer.java')

diff --git a/src/main/java/org/openslx/imagemaster/ftp/MasterFtpServer.java b/src/main/java/org/openslx/imagemaster/ftp/MasterFtpServer.java
new file mode 100644
index 0000000..992c49a
--- /dev/null
+++ b/src/main/java/org/openslx/imagemaster/ftp/MasterFtpServer.java
@@ -0,0 +1,144 @@
+package org.openslx.imagemaster.ftp;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+
+import org.apache.ftpserver.FtpServer;
+import org.apache.ftpserver.FtpServerFactory;
+import org.apache.ftpserver.ftplet.Authority;
+import org.apache.ftpserver.ftplet.FtpException;
+import org.apache.ftpserver.ftplet.Ftplet;
+import org.apache.ftpserver.ftplet.UserManager;
+import org.apache.ftpserver.listener.ListenerFactory;
+import org.apache.ftpserver.ssl.SslConfigurationFactory;
+import org.apache.ftpserver.usermanager.PropertiesUserManagerFactory;
+import org.apache.ftpserver.usermanager.SaltedPasswordEncryptor;
+import org.apache.ftpserver.usermanager.impl.BaseUser;
+import org.apache.ftpserver.usermanager.impl.WritePermission;
+import org.apache.log4j.Logger;
+import org.openslx.imagemaster.Globals;
+import org.openslx.imagemaster.Globals.PropString;
+import org.openslx.imagemaster.thrift.iface.FtpCredentials;
+import org.openslx.imagemaster.util.RandomString;
+
+public class MasterFtpServer implements Runnable
+{
+	private static Logger log = Logger.getLogger( MasterFtpServer.class );
+	private FtpServer server;
+	private UserManager userManager;
+	// key: serverSessionId, value: FtpCredentials
+	public final HashMap<String, FtpCredentials> users = new HashMap<>();
+	// key: ftpUsername, value: createTime
+	public final HashMap<String, Date> timeouts = new HashMap<>();
+	private boolean ini = false;
+
+	public void init( int port )
+	{
+		if ( ini )
+			return;
+
+		FtpServerFactory serverFactory = new FtpServerFactory();
+		ListenerFactory factory = new ListenerFactory();
+
+		// config ssl
+		SslConfigurationFactory sslConfigFactory = new SslConfigurationFactory();
+		sslConfigFactory.setKeystoreFile( new File( Globals.getPropertyString( PropString.KEYSTOREFILE ) ) );
+		sslConfigFactory.setKeyAlias( Globals.getPropertyString( PropString.KEYSTOREALIAS ) );
+		sslConfigFactory.setKeystorePassword( Globals.getPropertyString( PropString.KEYSTOREPASSWORD ) );
+
+		// set the port of the listener
+		factory.setPort( port );
+		factory.setSslConfiguration( sslConfigFactory.createSslConfiguration() );
+		factory.setImplicitSsl( true );
+
+		// replace the default listener
+		serverFactory.addListener( "default", factory.createListener() );
+
+		// create user manager
+		PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();
+		userManagerFactory.setFile( new File( "src/main/properties/ftp.properties" ) );
+		userManagerFactory.setPasswordEncryptor( new SaltedPasswordEncryptor() );
+		userManager = userManagerFactory.createUserManager();
+		serverFactory.setUserManager( userManager );
+
+		// add the Ftplet
+		HashMap<String, Ftplet> map = new HashMap<String, Ftplet>();
+		map.put( "Ftplet1", new MasterFtplet() );
+		serverFactory.setFtplets( map );
+
+		// start the server
+		server = serverFactory.createServer();
+		ini = true;
+	}
+
+	public FtpCredentials addUser( final String serverSessionId )
+	{
+		FtpCredentials ftpCredentials = null;
+
+		String generatedUser = RandomString.generate( 10, false );
+		String generatedPass = RandomString.generate( 16, true );
+
+		String dir = Globals.getPropertyString( Globals.PropString.FTPBASEDIR ) + "/"
+				+ generatedUser + "/";
+
+		if ( !new File( dir ).mkdir() ) {
+			return ftpCredentials;
+		}
+
+		BaseUser user = new BaseUser();
+		user.setName( generatedUser );
+		user.setPassword( generatedPass );
+		user.setHomeDirectory( dir );
+
+		List<Authority> authorities = new ArrayList<Authority>();
+		authorities.add( new WritePermission() );
+		user.setAuthorities( authorities );
+
+		try {
+			userManager.save( user );
+			ftpCredentials = new FtpCredentials( generatedUser, generatedPass );
+			users.put( serverSessionId, ftpCredentials );
+			timeouts.put( ftpCredentials.username, new Date() );
+		} catch ( FtpException e ) {
+		}
+
+		log.info( "Generated user/pass: " + generatedUser + "\t"
+				+ generatedPass + "\n with home dir: " + dir );
+
+		return ftpCredentials;
+	}
+
+	public boolean removeUser( final String serverSessionId )
+	{
+		if ( !users.containsKey( serverSessionId ) )
+			return false;
+
+		try {
+			userManager.delete( users.get( serverSessionId ).username );
+			// remove user from both maps
+			timeouts.remove( users.remove( serverSessionId ).username );
+			return true;
+		} catch ( FtpException e ) {
+			return false;
+		}
+	}
+
+	public FtpCredentials getCredentialsFromSessionId( String serverSessionId )
+	{
+		return users.get( serverSessionId );
+	}
+
+	@Override
+	public void run()
+	{
+		try {
+			log.info( "Starting FTP Sever" );
+			server.start();
+		} catch ( FtpException e1 ) {
+			e1.printStackTrace();
+		}
+	}
+}
-- 
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