/*
* Mibble MIB Parser (www.mibble.org)
*
* See LICENSE.txt for licensing information.
*
* Copyright (c) 2004-2017 Per Cederberg. All rights reserved.
*/
package net.percederberg.mibble.browser;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import net.percederberg.mibble.MibValueSymbol;
import net.percederberg.mibble.snmp.SnmpObjectType;
/**
* The SNMP operations panel.
*
* @author Per Cederberg
* @author Watsh Rajneesh
* @version 2.10
* @since 2.5
*/
public class SnmpPanel extends JPanel {
/**
* The default component insets.
*/
private static final Insets DEFAULT_INSETS = new Insets(2, 5, 2, 5);
/**
* The browser frame containing this panel.
*/
private BrowserFrame frame;
/**
* The SNMP version to use.
*/
private int version = 1;
/**
* The feedback flag. When this is set, the frame tree will be
* updated with the results of the SNMP operations.
*/
protected boolean feedback = true;
/**
* The blocked flag.
*/
private boolean blocked = false;
/**
* The currently ongoing SNMP operation.
*/
private Operation operation = null;
/**
* The SNMP field panel.
*/
private JPanel fieldPanel = new JPanel();
/**
* The host IP address label.
*/
private JLabel hostLabel = new JLabel("Host IP Address;");
/**
* The host IP address field.
*/
private JTextField hostField = new JTextField("127.0.0.1");
/**
* The host port number label.
*/
private JLabel portLabel = new JLabel("Port Number:");
/**
* The host port number field.
*/
private JTextField portField = new JTextField();
/**
* The read community name label.
*/
private JLabel readCommunityLabel = new JLabel("Read Community:");
/**
* The read community name field.
*/
private JPasswordField readCommunityField =
new JPasswordField("public");
/**
* The write community name label.
*/
private JLabel writeCommunityLabel =
new JLabel("Write Community:");
/**
* The write community name field.
*/
private JPasswordField writeCommunityField =
new JPasswordField("public");
/**
* The context name label.
*/
private JLabel contextNameLabel = new JLabel("Context Name:");
/**
* The context name field.
*/
private JTextField contextNameField = new JTextField("");
/**
* The context engine label.
*/
private JLabel contextEngineLabel = new JLabel("Context Engine:");
/**
* The context engine field.
*/
private JTextField contextEngineField = new JTextField("");
/**
* The user name label.
*/
private JLabel userNameLabel = new JLabel("User Name:");
/**
* The user name field.
*/
private JTextField userNameField = new JTextField("initial");
/**
* The authentication type label.
*/
private JLabel authTypeLabel = new JLabel("Authentication:");
/**
* The authentication type combo box.
*/
private JComboBox<String> authTypeCombo = new JComboBox<>();
/**
* The authentication password label.
*/
private JLabel authPasswordLabel = new JLabel("Auth. Password:");
/**
* The authentication password field.
*/
private JPasswordField authPasswordField =
new JPasswordField("public");
/**
* The privacy type label.
*/
private JLabel privacyTypeLabel = new JLabel("Privacy:");
/**
* The privacy type combo box.
*/
private JComboBox<String> privacyTypeCombo = new JComboBox<>();
/**
* The privacy password label.
*/
private JLabel privacyPasswordLabel =
new JLabel("Privacy Password:");
/**
* The privacy password field.
*/
private JPasswordField privacyPasswordField =
new JPasswordField("public");
/**
* The OID label.
*/
private JLabel oidLabel = new JLabel("OID:");
/**
* The OID field.
*/
private JTextField oidField = new JTextField();
/**
* The value label.
*/
private JLabel valueLabel = new JLabel("Value:");
/**
* The value field.
*/
private JTextField valueField = new JTextField();
/**
* The results text area.
*/
private JTextArea resultsArea = new JTextArea();
/**
* The get button.
*/
private JButton getButton = new JButton("Get");
/**
* The get next button.
*/
private JButton getNextButton = new JButton("Get Next");
/**
* The get all button.
*/
private JButton getAllButton = new JButton("Get All");
/**
* The set button.
*/
private JButton setButton = new JButton("Set");
/**
* The stop button.
*/
private JButton stopButton = new JButton("Stop");
/**
* The clear button.
*/
private JButton clearButton = new JButton("Clear");
/**
* Creates a new SNMP panel.
*
* @param frame the frame containing this panel
*/
public SnmpPanel(BrowserFrame frame) {
super();
this.frame = frame;
initialize();
}
/**
* Initializes the panel components.
*/
private void initialize() {
GridBagConstraints c;
// Component initialization
setLayout(new GridBagLayout());
fieldPanel.setLayout(new GridBagLayout());
portField.setText(String.valueOf(SnmpManager.DEFAULT_PORT));
authTypeCombo.addItem("None");
authTypeCombo.addItem(SnmpAuthentication.MD5_TYPE);
authTypeCombo.addItem(SnmpAuthentication.SHA1_TYPE);
privacyTypeCombo.addItem("None");
privacyTypeCombo.addItem(SnmpPrivacy.DES_TYPE);
privacyTypeCombo.addItem(SnmpPrivacy.AES_TYPE);
// Associate labels
hostLabel.setLabelFor(hostField);
portLabel.setLabelFor(portField);
readCommunityLabel.setLabelFor(readCommunityField);
writeCommunityLabel.setLabelFor(writeCommunityField);
contextNameLabel.setLabelFor(contextNameField);
contextEngineLabel.setLabelFor(contextEngineField);
userNameLabel.setLabelFor(userNameField);
authTypeLabel.setLabelFor(authTypeCombo);
authPasswordLabel.setLabelFor(authPasswordField);
privacyTypeLabel.setLabelFor(privacyTypeCombo);
privacyPasswordLabel.setLabelFor(privacyPasswordField);
oidLabel.setLabelFor(oidField);
valueLabel.setLabelFor(valueField);
// Add SNMP fields
initializeSnmpV1FieldPanel();
c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
add(fieldPanel, c);
// Add buttons
c = new GridBagConstraints();
c.gridy = 1;
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.NONE;
add(initializeButtons(), c);
// Add results area
resultsArea.setEditable(false);
c = new GridBagConstraints();
c.gridy = 2;
c.weightx = 1.0d;
c.weighty = 1.0d;
c.fill = GridBagConstraints.BOTH;
add(new JScrollPane(resultsArea), c);
// Add authentication and privacy listeners
authTypeCombo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
updateAuthentication();
}
});
privacyTypeCombo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
updatePrivacy();
}
});
updateAuthentication();
// Add text change listeners
DocumentListener l = new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
updateStatus();
}
public void insertUpdate(DocumentEvent e) {
updateStatus();
}
public void removeUpdate(DocumentEvent e) {
updateStatus();
}
};
hostField.getDocument().addDocumentListener(l);
portField.getDocument().addDocumentListener(l);
oidField.getDocument().addDocumentListener(l);
}
/**
* Initializes the field panel for SNMP version 1.
*/
private void initializeSnmpV1FieldPanel() {
GridBagConstraints c;
// Clear panel
fieldPanel.removeAll();
fieldPanel.invalidate();
// Add host IP address field
c = new GridBagConstraints();
c.gridy = 1;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(hostLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 1;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(hostField, c);
// Add read community field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 1;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(readCommunityLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 1;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(readCommunityField, c);
// Add host port number field
c = new GridBagConstraints();
c.gridy = 2;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(portLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 2;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(portField, c);
// Add write community field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 2;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(writeCommunityLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 2;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(writeCommunityField, c);
// Add separator
c = new GridBagConstraints();
c.gridy = 3;
c.gridwidth = 4;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(new JSeparator(), c);
// Add OID field
c = new GridBagConstraints();
c.gridy = 4;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(oidLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 4;
c.gridwidth = 3;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(oidField, c);
// Add value field
c = new GridBagConstraints();
c.gridy = 5;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(valueLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 5;
c.gridwidth = 3;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(valueField, c);
}
/**
* Initializes the field panel for SNMP version 3.
*/
private void initializeSnmpV3FieldPanel() {
GridBagConstraints c;
// Clear panel
fieldPanel.removeAll();
// Add host IP address field
c = new GridBagConstraints();
c.gridy = 1;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(hostLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 1;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(hostField, c);
// Add context name field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 1;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(contextNameLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 1;
c.weightx = 0.2d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(contextNameField, c);
// Add host port number field
c = new GridBagConstraints();
c.gridy = 2;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(portLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 2;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(portField, c);
// Add context engine field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 2;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(contextEngineLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 2;
c.weightx = 0.2d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(contextEngineField, c);
// Add user name field
c = new GridBagConstraints();
c.gridy = 3;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(userNameLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 3;
c.gridwidth = 3;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(userNameField, c);
// Add authentication type field
c = new GridBagConstraints();
c.gridy = 4;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(authTypeLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 4;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(authTypeCombo, c);
// Add authentication password field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 4;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(authPasswordLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 4;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(authPasswordField, c);
// Add privacy type field
c = new GridBagConstraints();
c.gridy = 5;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(privacyTypeLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 5;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(privacyTypeCombo, c);
// Add privacy password field
c = new GridBagConstraints();
c.gridx = 2;
c.gridy = 5;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(privacyPasswordLabel, c);
c = new GridBagConstraints();
c.gridx = 3;
c.gridy = 5;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(privacyPasswordField, c);
// Add separator
c = new GridBagConstraints();
c.gridy = 6;
c.gridwidth = 4;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(new JSeparator(), c);
// Add OID field
c = new GridBagConstraints();
c.gridy = 7;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(oidLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 7;
c.gridwidth = 3;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(oidField, c);
// Add value field
c = new GridBagConstraints();
c.gridy = 8;
c.fill = GridBagConstraints.BOTH;
c.insets = DEFAULT_INSETS;
fieldPanel.add(valueLabel, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 8;
c.gridwidth = 3;
c.weightx = 0.1d;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = DEFAULT_INSETS;
fieldPanel.add(valueField, c);
}
/**
* Creates and initializes the operation buttons.
*
* @return the panel containing the buttons
*/
private JPanel initializeButtons() {
JPanel panel = new JPanel();
panel.setLayout(new FlowLayout());
getButton.setToolTipText("Perform SNMP get operation");
getButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
performGet();
}
});
panel.add(getButton);
getNextButton.setToolTipText("Perform SNMP get next operation");
getNextButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
performGetNext();
}
});
panel.add(getNextButton);
getAllButton.setToolTipText("Walk an OID branch and " +
"retrieve all values");
getAllButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
performGetAll();
}
});
panel.add(getAllButton);
setButton.setToolTipText("Perform SNMP set operation");
setButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
performSet();
}
});
panel.add(setButton);
stopButton.setToolTipText("Stops the SNMP operation");
stopButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
performStop();
}
});
panel.add(stopButton);
clearButton.setToolTipText("Clear SNMP result area");
clearButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
clearResults();
}
});
panel.add(clearButton);
updateStatus();
return panel;
}
/**
* Sets the SNMP version to use.
*
* @param version the new version number
*/
public void setVersion(int version) {
this.version = version;
if (version == 1 || version == 2) {
initializeSnmpV1FieldPanel();
} else if (version == 3) {
initializeSnmpV3FieldPanel();
}
validate();
}
/**
* Sets the SNMP operation feedback flag. When this flag is set,
* the result of the SNMP operation will update the MIB tree
* selection.
*
* @param feedback the feedback flag
*/
public void setFeedback(boolean feedback) {
this.feedback = feedback;
}
/**
* Blocks or unblocks GUI operations in this panel. This method
* is used when performing long-running operations to inactivate
* the user interface.
*
* @param blocked the blocked flag
*/
public void setBlocked(boolean blocked) {
this.blocked = blocked;
updateStatus();
}
/**
* Updates the OID field based on the node selected in the frame
* tree.
*/
public void updateOid() {
MibTreeNode node = frame.getSelectedNode();
MibValueSymbol symbol = (node != null) ? node.getValueSymbol() : null;
if (symbol == null || symbol.getOid() == null) {
oidField.setText("");
} else if (symbol.isScalar()) {
oidField.setText(symbol.getOid().toString() + ".0");
} else {
oidField.setText(symbol.getOid().toString());
}
}
/**
* Updates the OID field with the specified OID. Also updates the
* frame selection to the closest matching node.
*
* @param text the new OID text
*/
public void updateOid(String text) {
frame.setSelectedNode(text);
oidField.setText(text);
}
/**
* Updates the value field with the specified value.
*
* @param value the new value
*/
public void updateValue(String value) {
valueField.setText(value);
}
/**
* Updates various panel components, such as text fields and
* buttons. This method should be called when a new MIB node is
* selected or when the UI has been blocked or unblocked.
*/
public void updateStatus() {
SnmpObjectType type = null;
MibTreeNode node = frame.getSelectedNode();
if (node != null) {
type = node.getSnmpObjectType();
}
boolean allowOperation = !blocked
&& hostField.getText().length() > 0
&& portField.getText().length() > 0;
boolean allowGet = allowOperation
&& oidField.getText().length() > 0;
boolean allowSet = allowOperation
&& type != null
&& type.getAccess().canWrite();
oidLabel.setEnabled(allowOperation);
oidField.setEnabled(allowOperation);
valueLabel.setEnabled(allowSet);
valueField.setEnabled(allowSet);
getButton.setEnabled(allowGet);
getNextButton.setEnabled(allowGet);
getAllButton.setEnabled(allowGet);
setButton.setEnabled(allowSet);
stopButton.setEnabled(operation != null);
}
/**
* Updates the authentication UI components on change.
*/
protected void updateAuthentication() {
boolean useAuth = authTypeCombo.getSelectedIndex() != 0;
authPasswordLabel.setEnabled(useAuth);
authPasswordField.setEnabled(useAuth);
privacyTypeLabel.setEnabled(useAuth);
privacyTypeCombo.setEnabled(useAuth);
if (!useAuth) {
privacyTypeCombo.setSelectedIndex(0);
}
}
/**
* Updates the privacy UI components on change.
*/
protected void updatePrivacy() {
boolean usePrivacy;
usePrivacy = privacyTypeCombo.getSelectedIndex() != 0;
privacyPasswordLabel.setEnabled(usePrivacy);
privacyPasswordField.setEnabled(usePrivacy);
}
/**
* Sets the operation status text. If the status text is null,
* the operation is assumed to have finished. This method also
* affects all input controls, making them disabled during an
* operation.
*
* @param text the status text (or null)
*/
protected void setOperationStatus(String text) {
synchronized (this) {
if (text == null) {
operation = null;
}
}
frame.setBlocked(text != null);
frame.setStatus(text);
}
/**
* Performs a get operation.
*/
protected void performGet() {
Operation operation = createOperation(true);
if (operation != null) {
operation.startGet();
}
}
/**
* Performs a get next operation.
*/
protected void performGetNext() {
Operation operation = createOperation(true);
if (operation != null) {
operation.startGetNext();
}
}
/**
* Performs a get all operation.
*/
protected void performGetAll() {
operation = createOperation(true);
if (operation != null) {
operation.startGetAll();
}
}
/**
* Performs a set operation.
*/
protected void performSet() {
Operation operation = createOperation(false);
if (operation != null) {
operation.startSet();
}
}
/**
* Stops the current operation.
*/
protected void performStop() {
synchronized (this) {
if (operation != null) {
operation.stop();
}
}
}
/**
* Clears the result area.
*/
protected void clearResults() {
synchronized (this) {
resultsArea.setText("");
}
}
/**
* Appends a text to the results area.
*
* @param text the text to append
*/
protected void appendResults(String text) {
synchronized (this) {
resultsArea.append(text);
resultsArea.setCaretPosition(resultsArea.getText().length());
}
}
/**
* Creates a new operation object. The values in the panel fields
* will be used.
*
* @param read the read flag (set to use read community)
*
* @return the operation object, or
* null if none could be created
*/
private Operation createOperation(boolean read) {
// Validate port number
String host = hostField.getText();
int port = 0;
try {
port = Integer.parseInt(portField.getText());
} catch (NumberFormatException ignore) {
// Do nothing here
}
if (port <= 0 || port >= 65536) {
portField.requestFocus();
String msg = "Provide valid (numeric) port number in the " +
"range [1..65535].";
JOptionPane.showMessageDialog(frame,
msg,
"Port Number Error",
JOptionPane.ERROR_MESSAGE);
return null;
}
// Create SNMP manager
SnmpManager manager = null;
try {
if (version < 3) {
String community = null;
if (read) {
community = new String(readCommunityField.getPassword());
} else {
community = new String(writeCommunityField.getPassword());
}
if (version == 1) {
manager = SnmpManager.createSNMPv1(host, port, community);
} else {
manager = SnmpManager.createSNMPv2c(host, port, community);
}
} else {
String contextName = contextNameField.getText();
String contextEngine = contextEngineField.getText();
String userName = userNameField.getText();
SnmpAuthentication auth = null;
if (authTypeCombo.getSelectedIndex() > 0) {
String type = authTypeCombo.getSelectedItem().toString();
String password = new String(authPasswordField.getPassword());
auth = new SnmpAuthentication(type, password);
}
SnmpPrivacy privacy = null;
if (privacyTypeCombo.getSelectedIndex() > 0) {
String type = privacyTypeCombo.getSelectedItem().toString();
String password = new String(privacyPasswordField.getPassword());
privacy = new SnmpPrivacy(type, password);
}
manager = SnmpManager.createSNMPv3(host,
port,
contextName,
contextEngine,
userName,
auth,
privacy);
}
} catch (SnmpException e) {
JOptionPane.showMessageDialog(frame,
e.getMessage(),
"SNMP Error",
JOptionPane.ERROR_MESSAGE);
return null;
}
// Create request
SnmpRequest request = null;
String oid = oidField.getText();
if (read) {
request = new SnmpRequest(oid);
} else {
SnmpObjectType type = frame.getSelectedNode().getSnmpObjectType();
String value = valueField.getText();
request = new SnmpRequest(oid, type.getSyntax(), value);
}
return new Operation(manager, request);
}
/**
* A background SNMP operation. This class is needed in order to
* implement the runnable interface to be able to run SNMP
* operations in a background thread.
*/
private class Operation implements Runnable {
/**
* The SNMP manager to use.
*/
private SnmpManager manager;
/**
* The SNMP request object.
*/
private SnmpRequest request;
/**
* The action to perform.
*/
private String action;
/**
* The thread stopped flag.
*/
private boolean stopped = false;
/**
* Creates a new background SNMP operation.
*
* @param manager the SNMP manager to use
* @param request the request OID, type and value
*/
public Operation(SnmpManager manager, SnmpRequest request) {
this.manager = manager;
this.request = request;
}
/**
* Starts a GET operation in a background thread.
*/
public void startGet() {
this.action = "GET";
start();
}
/**
* Starts a GET NEXT operation in a background thread.
*/
public void startGetNext() {
this.action = "GET NEXT";
start();
}
/**
* Starts a GET ALL operation in a background thread.
*/
public void startGetAll() {
this.action = "GET ALL";
start();
}
/**
* Starts a SET operation in a background thread.
*/
public void startSet() {
this.action = "SET";
start();
}
/**
* Starts the background thread.
*/
private void start() {
new Thread(this).start();
}
/**
* Stops the background thread.
*/
public void stop() {
stopped = true;
}
/**
* Runs the operation. This method should only be called by
* the thread created through a call to start().
*/
public void run() {
String msg = "Performing " + action + " on " +
request.getOid() + "...";
setOperationStatus(msg);
try {
if (action.equals("GET ALL")) {
runGetAll();
} else {
appendResults(action + ": ");
SnmpResponse response = null;
if (action.equals("GET")) {
response = manager.get(request.getOid());
} else if (action.equals("GET NEXT")) {
response = manager.getNext(request.getOid());
} else if (action.equals("SET")) {
response = manager.set(request);
} else {
throw new SnmpException("Unknown operation: " +
action);
}
appendResults(response.getOidsAndValues());
if (feedback) {
updateOid(response.getOid(0));
updateValue(response.getValue(0));
}
}
} catch (SnmpException e) {
appendResults("Error: ");
appendResults(e.getMessage());
appendResults("\n");
}
manager.destroy();
setOperationStatus(null);
}
/**
* Runs the get all operation.
*
* @throws SnmpException if an error occurred during the
* operation
*/
private void runGetAll() throws SnmpException {
String oid = request.getOid();
do {
SnmpResponse response = manager.getNext(oid);
oid = response.getOid(0);
if (oid.startsWith(request.getOid())) {
appendResults("GET NEXT: ");
appendResults(response.getOidsAndValues());
if (feedback) {
updateOid(response.getOid(0));
updateValue(response.getValue(0));
try {
Thread.sleep(250);
} catch (InterruptedException ignore) {
// Do nothing if interrupted
}
}
} else {
appendResults("DONE: no more values for " +
request.getOid() + "\n");
stopped = true;
}
} while (!stopped);
}
}
}