edu.stanford.smi.protege.server.ServerPanel Maven / Gradle / Ivy
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Core code for the Protege ontology editor. Serves as the basis for the Protege-Frames and Protege-OWL editors.
package edu.stanford.smi.protege.server;
import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.rmi.ConnectException;
import java.rmi.ConnectIOException;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.rmi.UnknownHostException;
import java.rmi.UnmarshalException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JTextField;
import edu.stanford.smi.protege.resource.ResourceKey;
import edu.stanford.smi.protege.server.socket.SSLFactory;
import edu.stanford.smi.protege.util.AllowableAction;
import edu.stanford.smi.protege.util.ApplicationProperties;
import edu.stanford.smi.protege.util.ComponentFactory;
import edu.stanford.smi.protege.util.LabeledComponent;
import edu.stanford.smi.protege.util.Log;
import edu.stanford.smi.protege.util.ModalDialog;
import edu.stanford.smi.protege.util.SystemUtilities;
import edu.stanford.smi.protege.util.Validatable;
/**
*
* @author Ray Fergerson
*/
public class ServerPanel extends JPanel implements Validatable {
private static final long serialVersionUID = 4729412021203886589L;
private static final transient Logger log = Log.getLogger(ServerPanel.class);
private static String _lastPassword = null;
private JTextField _usernameField;
private JTextField _passwordField;
private JTextField _hostNameField;
private JComponent _registerUserPanel;
private JCheckBox _administerServerChekBox;
private RemoteServer _server;
private RemoteSession _session;
private static final String USER_NAME = ServerPanel.class.getName() + ".user_name";
private static final String HOST_NAME = ServerPanel.class.getName() + ".host_name";
public ServerPanel() {
_usernameField = ComponentFactory.createTextField();
_usernameField.setText(ApplicationProperties.getString(USER_NAME, "Guest"));
_passwordField = ComponentFactory.createPasswordField();
if (_lastPassword != null) {
_passwordField.setText(_lastPassword);
} else if (_usernameField.getText().equals("Guest")) {
_passwordField.setText("guest");
}
_hostNameField = ComponentFactory.createTextField();
_hostNameField.setText(ApplicationProperties.getString(HOST_NAME, "localhost"));
setLayout(new BorderLayout());
JPanel panel = new JPanel(new GridLayout(5, 0));
panel.add(new LabeledComponent("Host Machine Name", _hostNameField));
panel.add(new LabeledComponent("User Name", _usernameField));
panel.add(new LabeledComponent("Password", _passwordField));
_registerUserPanel = getRegisterUserPanel();
panel.add(_registerUserPanel);
_administerServerChekBox = ComponentFactory.createCheckBox("Administer server (requires privileges)");
_administerServerChekBox.setSelected(false);
panel.add(_administerServerChekBox);
add(panel, BorderLayout.NORTH);
}
public boolean validateContents() {
boolean isValid = false;
try {
isValid = isValidConfiguration();
} catch (Exception e) {
log.log(Level.WARNING, "Could not log in", e);
}
return isValid;
}
private boolean isValidConfiguration() {
boolean isValid = false;
String serverName = _hostNameField.getText();
_server = connectToHost(serverName);
if (_server != null) {
String username = _usernameField.getText();
String password = _passwordField.getText();
_session = createSession(username, password);
isValid = (_session != null);
}
saveFields();
return isValid;
}
public void saveContents() {
// do nothing
}
private void saveFields() {
ApplicationProperties.setString(USER_NAME, _usernameField.getText());
ApplicationProperties.setString(HOST_NAME, _hostNameField.getText());
_lastPassword = _passwordField.getText();
}
public RemoteServer getServer() {
return _server;
}
public RemoteSession getSession() {
return _session;
}
public boolean isAdminsterServerActivated() {
return _administerServerChekBox.isSelected();
}
private RemoteServer connectToHost(String serverName) {
RemoteServer server = null;
try {
if (SSLFactory.useSSL(SSLFactory.Context.LOGIN)) {
SSLFactory.resetAuth();
}
server = (RemoteServer) Naming.lookup("//" + serverName + "/" + Server.getBoundName());
if (SSLFactory.useSSL(SSLFactory.Context.LOGIN) && !SSLFactory.checkAuth()) {
log.severe("Requested ssl security but server is not secured.");
return null;
}
} catch (UnknownHostException e) {
log("Trying to connect to an unknown host: " + serverName, e);
ModalDialog.showMessageDialog(this, "You are trying to connect to an unknown host: " + serverName + "\n\n" +
"A possible cause of this error is that the specified hostname and port are not correct.",
"Unkown host", ModalDialog.MODE_CLOSE);
} catch (ConnectException e) {
log("Cannot connect to: " + serverName + ". " + e.getMessage(), e);
ModalDialog.showMessageDialog(this, "Cannot connect to: " + serverName + "\n\n" +
"Possible causes of this error are firewall or network configuration problems.\n" +
"Please check also that the hostname and port are correct.",
"Unable to connect", ModalDialog.MODE_CLOSE);
} catch (ConnectIOException e) {
log("Cannot connect to: " + serverName + ". " + e.getMessage(), e);
ModalDialog.showMessageDialog(this, "Cannot connect to: " + serverName + "\n\n" +
"Possible causes of this error are firewall or network configuration problems.\n" +
"Please check also that the hostname and port are correct.",
"IO connection error", ModalDialog.MODE_CLOSE);
} catch (UnmarshalException e) {
log("Unmarshalling exception. Possibly, the server and client use different versions of Protege " + e.getMessage(), e);
ModalDialog.showMessageDialog(this, "There was a connection problem to: " + serverName + "\n\n" +
"Most likely cause is that the server and client are running different versions of Protege.",
"Unmarshalling exception", ModalDialog.MODE_CLOSE);
} catch (NotBoundException e) {
log("Not bound exception: " + serverName + ". " + e.getMessage() + " Is the Protege server started?", e);
ModalDialog.showMessageDialog(this, "Cannot connect to: " + serverName + "\n\n" +
"Most likely cause of this problem is that the Protege server is not running.\n" +
"Please check also that the hostname and port are correct.\n" +
"This error can also be caused by firewall or network problems.",
"Not bound exception", ModalDialog.MODE_CLOSE);
} catch (Exception e) {
log("Error at connecting to: " + serverName + ". " + e.getMessage(), e);
ModalDialog.showMessageDialog(this, "An error occured at connecting to: " + serverName + "\n\n" +
"See console for more details.",
"Error at connect", ModalDialog.MODE_CLOSE);
}
return server;
}
private RemoteSession createSession(String username, String password) {
//check the real connection by pinging the server
try {
getAllowsUserCreate(_server);
} catch (Exception e) {
log("Firewall or network problems when connecting to the server. " + e.getMessage() + " Server ref: " + _server, e);
ModalDialog.showMessageDialog(this, "Cannot connect to server.\n" +
"Possible causes of this error are firewall or network configuration problems.\n",
"Unable to connect", ModalDialog.MODE_CLOSE);
return null;
}
RemoteSession session = null;
try {
session = _server.openSession(username, SystemUtilities.getMachineIpAddress(), password);
if (session == null) {
log("Invalid login for " + username, null);
ModalDialog.showMessageDialog(this, "Invalid username and password. Please try again.", "Login failed");
}
} catch (UnknownHostException e) {
log("Connection to RMI registry successful, but retrieved an unknown hostname from the RMI registry.\n" +
"Most probable cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server.\n" +
"Server reference: " + _server, e);
ModalDialog.showMessageDialog(this, "Connection to RMI registry successful, but retrieved an unknown hostname from the RMI registry.\n" +
"Most probable cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server.\n" +
"Server reference: " + _server,
"Unkown host", ModalDialog.MODE_CLOSE);
} catch (ConnectException e) {
log("Connection to RMI registry successful, but cannot connect to the server.\n" +
"Possible cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server, or\n" +
"a network or firwall problem" +
"Server reference: " + _server, e);
ModalDialog.showMessageDialog(this, "Connection to RMI registry successful, but retrieved an unknown hostname from the RMI registry.\n" +
"Possible cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server, or\n" +
"a network or firwall problem" +
"Server reference: " + _server,
"Unkown host", ModalDialog.MODE_CLOSE);
} catch (ConnectIOException e) {
log("Connection to RMI registry successful, but cannot connect to the server.\n" +
"Possible cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server, or\n" +
"a network or firwall problem" +
"Server reference: " + _server, e);
ModalDialog.showMessageDialog(this, "Connection to RMI registry successful, but retrieved an unknown hostname from the RMI registry.\n" +
"Possible cause is a misconfiguration of the java.rmi.server.hostname Java argument on the server, or\n" +
"a network or firwall problem" +
"Server reference: " + _server,
"Unkown host", ModalDialog.MODE_CLOSE);
} catch (UnmarshalException e) {
log("Connection to RMI registry successful, but there was an unmarshalling exception connecting to the server.\n" +
"Possibly, the server and client use different versions of Protege." + e.getMessage(), e);
ModalDialog.showMessageDialog(this, "Connection to RMI registry successful, but there was an unmarshalling exception connecting to the server.\n" +
"Possibly, the server and client use different versions of Protege.",
"Unmarshalling exception", ModalDialog.MODE_CLOSE);
} catch (RemoteException e) {
log.log(Level.WARNING, "Connection to RMI registry successful, but at error at creating session for " + username + " Server ref: " + _server, e);
ModalDialog.showMessageDialog(this, "There was an error at checking the login credentails.", "Error at login");
}
return session;
}
private JComponent getRegisterUserPanel() {
AllowableAction registerUserAction = createRegisterUserAction();
JButton registerUserButton = ComponentFactory.createButton(registerUserAction);
registerUserButton.setText("New user");
registerUserButton.setToolTipText("Register new user (Checks first if server allows the creation of new users)");
LabeledComponent registerUserPanel = new LabeledComponent("", null);
registerUserPanel.add(registerUserButton, BorderLayout.EAST);
return registerUserPanel;
}
private AllowableAction createRegisterUserAction() {
AllowableAction action = new AllowableAction(new ResourceKey("Create new user")) {
private static final long serialVersionUID = -5124239014343816470L;
public void actionPerformed(ActionEvent e) {
final String hostName = _hostNameField.getText();
if (_hostNameField == null || hostName.length() == 0) {
ModalDialog.showMessageDialog(ServerPanel.this,
"Server host name is empty. Please set first the server host name before registering.",
"Error: Empty Server Name");
return;
}
if (!serverAllowsUserCreate(hostName)) {
return;
}
try {
_server = connectToHost(hostName);
} catch (Exception ex) {
log.log(Level.WARNING, "Error at connecting to host " + hostName, ex);
ModalDialog.showMessageDialog(ServerPanel.this, "Cannot connect to server: " + hostName
+ "\nPlease check that the server name is correct." + "\nThis error may also indicate firewall problems.",
"Error: Connect to server");
return;
}
RegisterUserServerPanel regUserPanel = new RegisterUserServerPanel(hostName);
int ret = ModalDialog.showDialog(ServerPanel.this, regUserPanel, "Register new user", ModalDialog.MODE_OK_CANCEL);
if (ret == ModalDialog.OPTION_OK) {
_usernameField.setText(regUserPanel.getUsername());
_passwordField.setText(regUserPanel.getPassword());
}
}
};
return action;
}
private boolean serverAllowsUserCreate(String serverName) {
if (serverName == null) {
return false;
}
serverName = serverName.trim();
if (serverName.length() == 0) {
return false;
}
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
RemoteServer server = connectToHost(serverName);
if (server == null) {
return false;
}
try {
boolean allowsUserCreate = getAllowsUserCreate(server);
if (!allowsUserCreate) {
setCursor(Cursor.getDefaultCursor());
ModalDialog.showMessageDialog(this, "Server "+ serverName + " does not allow the creation of new users.\n", "Warning");
}
return allowsUserCreate;
} catch (Exception e) {
//This case should really not happen; just being overcautious
log("There was an error at querying the server whether it allows the creation of new users", e);
setCursor(Cursor.getDefaultCursor());
ModalDialog.showMessageDialog(this, "There was an error at querying the server whether it allows the creation of users", "Warning");
return false;
} finally {
setCursor(Cursor.getDefaultCursor());
}
}
private boolean getAllowsUserCreate(RemoteServer server) throws RemoteException {
boolean allowsUserCreate = false;
try {
allowsUserCreate = server.allowsCreateUsers();
} catch (RemoteException e) {
log("Error at pinging server", e);
throw e;
}
return allowsUserCreate;
}
private void log(String message, Exception e) {
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, message, e);
}
log.warning(message);
}
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