I'm trying to set up an SFTP server with multiple users that each have their own home directory.
I read this answer which explained how to set a virtual directory for a single user but I'm not sure how to have multiple users each with their own home directory.
Can someone please tell me how to go about this?
I finally got it working. Here is a working example:
pom.xml
org.apache.sshd sshd-core 0.14.0 Test.java
import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.sshd.SshServer; import org.apache.sshd.common.NamedFactory; import org.apache.sshd.common.file.virtualfs.VirtualFileSystemFactory; import org.apache.sshd.server.Command; import org.apache.sshd.server.PasswordAuthenticator; import org.apache.sshd.server.UserAuth; import org.apache.sshd.server.auth.UserAuthPassword; import org.apache.sshd.server.command.ScpCommandFactory; import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider; import org.apache.sshd.server.session.ServerSession; import org.apache.sshd.server.sftp.SftpSubsystem; public class Test { public static void main(String args[]) { try { Runtime.getRuntime().exec("sudo fuser -k " + "2222" + "/tcp"); } catch (IOException ex) { Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex); } File TEST = new File("test"); File ADMIN = new File("admin"); File ERROR = new File("error"); TEST.mkdirs(); ADMIN.mkdirs(); ERROR.mkdirs(); SshServer sshServer = SshServer.setUpDefaultServer(); sshServer.setFileSystemFactory(new VirtualFileSystemFactory(ERROR.getAbsolutePath())); sshServer.setPort(2222); sshServer.setKeyPairProvider(new SimpleGeneratorHostKeyProvider(new File("my.pem").getAbsolutePath())); sshServer.setCommandFactory(new ScpCommandFactory()); List> userAuthFactories = new ArrayList(); userAuthFactories.add(new UserAuthPassword.Factory()); sshServer.setUserAuthFactories(userAuthFactories); sshServer.setPasswordAuthenticator(new PasswordAuthenticator() { @Override public boolean authenticate(String username, String password, ServerSession session) { if ((username.equals("test")) && (password.equals("test"))) { sshServer.setFileSystemFactory(new VirtualFileSystemFactory(TEST.getAbsolutePath())); return true; } if ((username.equals("admin")) && (password.equals("admin"))) { sshServer.setFileSystemFactory(new VirtualFileSystemFactory(ADMIN.getAbsolutePath())); return true; } return false; } }); List> namedFactoryList = new ArrayList(); namedFactoryList.add(new SftpSubsystem.Factory()); sshServer.setSubsystemFactories(namedFactoryList); try { sshServer.start(); } catch (IOException ex) { Logger.getLogger(CarrierSFTPServer.class.getName()).log(Level.SEVERE, null, ex); } } } Updated version of above (as of 1.4.0 of sshd-core). Note that I did not specify a file for the host key provider since mine was for a Junit integration test.
List> userAuthFactories = new ArrayList>(); userAuthFactories.add(new UserAuthPasswordFactory()); List> sftpCommandFactory = new ArrayList>(); sftpCommandFactory.add(new SftpSubsystemFactory()); SshServer sshd = SshServer.setUpDefaultServer(); sshd.setPort(22); sshd.setKeyPairProvider(new SimpleGeneratorHostKeyProvider()); sshd.setUserAuthFactories(userAuthFactories); sshd.setCommandFactory(new ScpCommandFactory()); sshd.setSubsystemFactories(sftpCommandFactory); sshd.setPasswordAuthenticator(new PasswordAuthenticator() { @Override public boolean authenticate(String username, String password, ServerSession session) { if ((username.equals("admin")) && (password.equals("admin"))) { sshd.setFileSystemFactory(new VirtualFileSystemFactory(new File("C:\\devl").toPath())); return true; } return false; } }); sshd.start();