| /* |
| * Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.jmx.remote.security; |
| |
| import com.sun.jmx.mbeanserver.GetPropertyAction; |
| import com.sun.jmx.mbeanserver.Util; |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FilePermission; |
| import java.io.IOException; |
| import java.security.AccessControlException; |
| import java.security.AccessController; |
| import java.util.Arrays; |
| import java.util.Hashtable; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import javax.security.auth.*; |
| import javax.security.auth.callback.*; |
| import javax.security.auth.login.*; |
| import javax.security.auth.spi.*; |
| import javax.management.remote.JMXPrincipal; |
| |
| import com.sun.jmx.remote.util.ClassLogger; |
| import com.sun.jmx.remote.util.EnvHelp; |
| import sun.management.jmxremote.ConnectorBootstrap; |
| |
| /** |
| * This {@link LoginModule} performs file-based authentication. |
| * |
| * <p> A supplied username and password is verified against the |
| * corresponding user credentials stored in a designated password file. |
| * If successful then a new {@link JMXPrincipal} is created with the |
| * user's name and it is associated with the current {@link Subject}. |
| * Such principals may be identified and granted management privileges in |
| * the access control file for JMX remote management or in a Java security |
| * policy. |
| * |
| * <p> The password file comprises a list of key-value pairs as specified in |
| * {@link Properties}. The key represents a user's name and the value is its |
| * associated cleartext password. By default, the following password file is |
| * used: |
| * <pre> |
| * ${java.home}/lib/management/jmxremote.password |
| * </pre> |
| * A different password file can be specified via the <code>passwordFile</code> |
| * configuration option. |
| * |
| * <p> This module recognizes the following <code>Configuration</code> options: |
| * <dl> |
| * <dt> <code>passwordFile</code> </dt> |
| * <dd> the path to an alternative password file. It is used instead of |
| * the default password file.</dd> |
| * |
| * <dt> <code>useFirstPass</code> </dt> |
| * <dd> if <code>true</code>, this module retrieves the username and password |
| * from the module's shared state, using "javax.security.auth.login.name" |
| * and "javax.security.auth.login.password" as the respective keys. The |
| * retrieved values are used for authentication. If authentication fails, |
| * no attempt for a retry is made, and the failure is reported back to |
| * the calling application.</dd> |
| * |
| * <dt> <code>tryFirstPass</code> </dt> |
| * <dd> if <code>true</code>, this module retrieves the username and password |
| * from the module's shared state, using "javax.security.auth.login.name" |
| * and "javax.security.auth.login.password" as the respective keys. The |
| * retrieved values are used for authentication. If authentication fails, |
| * the module uses the CallbackHandler to retrieve a new username and |
| * password, and another attempt to authenticate is made. If the |
| * authentication fails, the failure is reported back to the calling |
| * application.</dd> |
| * |
| * <dt> <code>storePass</code> </dt> |
| * <dd> if <code>true</code>, this module stores the username and password |
| * obtained from the CallbackHandler in the module's shared state, using |
| * "javax.security.auth.login.name" and |
| * "javax.security.auth.login.password" as the respective keys. This is |
| * not performed if existing values already exist for the username and |
| * password in the shared state, or if authentication fails.</dd> |
| * |
| * <dt> <code>clearPass</code> </dt> |
| * <dd> if <code>true</code>, this module clears the username and password |
| * stored in the module's shared state after both phases of authentication |
| * (login and commit) have completed.</dd> |
| * </dl> |
| */ |
| public class FileLoginModule implements LoginModule { |
| |
| // Location of the default password file |
| private static final String DEFAULT_PASSWORD_FILE_NAME = |
| AccessController.doPrivileged(new GetPropertyAction("java.home")) + |
| File.separatorChar + "lib" + |
| File.separatorChar + "management" + File.separatorChar + |
| ConnectorBootstrap.DefaultValues.PASSWORD_FILE_NAME; |
| |
| // Key to retrieve the stored username |
| private static final String USERNAME_KEY = |
| "javax.security.auth.login.name"; |
| |
| // Key to retrieve the stored password |
| private static final String PASSWORD_KEY = |
| "javax.security.auth.login.password"; |
| |
| // Log messages |
| private static final ClassLogger logger = |
| new ClassLogger("javax.management.remote.misc", "FileLoginModule"); |
| |
| // Configurable options |
| private boolean useFirstPass = false; |
| private boolean tryFirstPass = false; |
| private boolean storePass = false; |
| private boolean clearPass = false; |
| |
| // Authentication status |
| private boolean succeeded = false; |
| private boolean commitSucceeded = false; |
| |
| // Supplied username and password |
| private String username; |
| private char[] password; |
| private JMXPrincipal user; |
| |
| // Initial state |
| private Subject subject; |
| private CallbackHandler callbackHandler; |
| private Map<String, Object> sharedState; |
| private Map<String, ?> options; |
| private String passwordFile; |
| private String passwordFileDisplayName; |
| private boolean userSuppliedPasswordFile; |
| private boolean hasJavaHomePermission; |
| private Properties userCredentials; |
| |
| /** |
| * Initialize this <code>LoginModule</code>. |
| * |
| * @param subject the <code>Subject</code> to be authenticated. |
| * @param callbackHandler a <code>CallbackHandler</code> to acquire the |
| * user's name and password. |
| * @param sharedState shared <code>LoginModule</code> state. |
| * @param options options specified in the login |
| * <code>Configuration</code> for this particular |
| * <code>LoginModule</code>. |
| */ |
| public void initialize(Subject subject, CallbackHandler callbackHandler, |
| Map<String,?> sharedState, |
| Map<String,?> options) |
| { |
| |
| this.subject = subject; |
| this.callbackHandler = callbackHandler; |
| this.sharedState = Util.cast(sharedState); |
| this.options = options; |
| |
| // initialize any configured options |
| tryFirstPass = |
| "true".equalsIgnoreCase((String)options.get("tryFirstPass")); |
| useFirstPass = |
| "true".equalsIgnoreCase((String)options.get("useFirstPass")); |
| storePass = |
| "true".equalsIgnoreCase((String)options.get("storePass")); |
| clearPass = |
| "true".equalsIgnoreCase((String)options.get("clearPass")); |
| |
| passwordFile = (String)options.get("passwordFile"); |
| passwordFileDisplayName = passwordFile; |
| userSuppliedPasswordFile = true; |
| |
| // set the location of the password file |
| if (passwordFile == null) { |
| passwordFile = DEFAULT_PASSWORD_FILE_NAME; |
| userSuppliedPasswordFile = false; |
| try { |
| System.getProperty("java.home"); |
| hasJavaHomePermission = true; |
| passwordFileDisplayName = passwordFile; |
| } catch (SecurityException e) { |
| hasJavaHomePermission = false; |
| passwordFileDisplayName = |
| ConnectorBootstrap.DefaultValues.PASSWORD_FILE_NAME; |
| } |
| } |
| } |
| |
| /** |
| * Begin user authentication (Authentication Phase 1). |
| * |
| * <p> Acquire the user's name and password and verify them against |
| * the corresponding credentials from the password file. |
| * |
| * @return true always, since this <code>LoginModule</code> |
| * should not be ignored. |
| * @exception FailedLoginException if the authentication fails. |
| * @exception LoginException if this <code>LoginModule</code> |
| * is unable to perform the authentication. |
| */ |
| public boolean login() throws LoginException { |
| |
| try { |
| loadPasswordFile(); |
| } catch (IOException ioe) { |
| LoginException le = new LoginException( |
| "Error: unable to load the password file: " + |
| passwordFileDisplayName); |
| throw EnvHelp.initCause(le, ioe); |
| } |
| |
| if (userCredentials == null) { |
| throw new LoginException |
| ("Error: unable to locate the users' credentials."); |
| } |
| |
| if (logger.debugOn()) { |
| logger.debug("login", |
| "Using password file: " + passwordFileDisplayName); |
| } |
| |
| // attempt the authentication |
| if (tryFirstPass) { |
| |
| try { |
| // attempt the authentication by getting the |
| // username and password from shared state |
| attemptAuthentication(true); |
| |
| // authentication succeeded |
| succeeded = true; |
| if (logger.debugOn()) { |
| logger.debug("login", |
| "Authentication using cached password has succeeded"); |
| } |
| return true; |
| |
| } catch (LoginException le) { |
| // authentication failed -- try again below by prompting |
| cleanState(); |
| logger.debug("login", |
| "Authentication using cached password has failed"); |
| } |
| |
| } else if (useFirstPass) { |
| |
| try { |
| // attempt the authentication by getting the |
| // username and password from shared state |
| attemptAuthentication(true); |
| |
| // authentication succeeded |
| succeeded = true; |
| if (logger.debugOn()) { |
| logger.debug("login", |
| "Authentication using cached password has succeeded"); |
| } |
| return true; |
| |
| } catch (LoginException le) { |
| // authentication failed |
| cleanState(); |
| logger.debug("login", |
| "Authentication using cached password has failed"); |
| |
| throw le; |
| } |
| } |
| |
| if (logger.debugOn()) { |
| logger.debug("login", "Acquiring password"); |
| } |
| |
| // attempt the authentication using the supplied username and password |
| try { |
| attemptAuthentication(false); |
| |
| // authentication succeeded |
| succeeded = true; |
| if (logger.debugOn()) { |
| logger.debug("login", "Authentication has succeeded"); |
| } |
| return true; |
| |
| } catch (LoginException le) { |
| cleanState(); |
| logger.debug("login", "Authentication has failed"); |
| |
| throw le; |
| } |
| } |
| |
| /** |
| * Complete user authentication (Authentication Phase 2). |
| * |
| * <p> This method is called if the LoginContext's |
| * overall authentication has succeeded |
| * (all the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL |
| * LoginModules have succeeded). |
| * |
| * <p> If this LoginModule's own authentication attempt |
| * succeeded (checked by retrieving the private state saved by the |
| * <code>login</code> method), then this method associates a |
| * <code>JMXPrincipal</code> with the <code>Subject</code> located in the |
| * <code>LoginModule</code>. If this LoginModule's own |
| * authentication attempted failed, then this method removes |
| * any state that was originally saved. |
| * |
| * @exception LoginException if the commit fails |
| * @return true if this LoginModule's own login and commit |
| * attempts succeeded, or false otherwise. |
| */ |
| public boolean commit() throws LoginException { |
| |
| if (succeeded == false) { |
| return false; |
| } else { |
| if (subject.isReadOnly()) { |
| cleanState(); |
| throw new LoginException("Subject is read-only"); |
| } |
| // add Principals to the Subject |
| if (!subject.getPrincipals().contains(user)) { |
| subject.getPrincipals().add(user); |
| } |
| |
| if (logger.debugOn()) { |
| logger.debug("commit", |
| "Authentication has completed successfully"); |
| } |
| } |
| // in any case, clean out state |
| cleanState(); |
| commitSucceeded = true; |
| return true; |
| } |
| |
| /** |
| * Abort user authentication (Authentication Phase 2). |
| * |
| * <p> This method is called if the LoginContext's overall authentication |
| * failed (the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL |
| * LoginModules did not succeed). |
| * |
| * <p> If this LoginModule's own authentication attempt |
| * succeeded (checked by retrieving the private state saved by the |
| * <code>login</code> and <code>commit</code> methods), |
| * then this method cleans up any state that was originally saved. |
| * |
| * @exception LoginException if the abort fails. |
| * @return false if this LoginModule's own login and/or commit attempts |
| * failed, and true otherwise. |
| */ |
| public boolean abort() throws LoginException { |
| |
| if (logger.debugOn()) { |
| logger.debug("abort", |
| "Authentication has not completed successfully"); |
| } |
| |
| if (succeeded == false) { |
| return false; |
| } else if (succeeded == true && commitSucceeded == false) { |
| |
| // Clean out state |
| succeeded = false; |
| cleanState(); |
| user = null; |
| } else { |
| // overall authentication succeeded and commit succeeded, |
| // but someone else's commit failed |
| logout(); |
| } |
| return true; |
| } |
| |
| /** |
| * Logout a user. |
| * |
| * <p> This method removes the Principals |
| * that were added by the <code>commit</code> method. |
| * |
| * @exception LoginException if the logout fails. |
| * @return true in all cases since this <code>LoginModule</code> |
| * should not be ignored. |
| */ |
| public boolean logout() throws LoginException { |
| if (subject.isReadOnly()) { |
| cleanState(); |
| throw new LoginException ("Subject is read-only"); |
| } |
| subject.getPrincipals().remove(user); |
| |
| // clean out state |
| cleanState(); |
| succeeded = false; |
| commitSucceeded = false; |
| user = null; |
| |
| if (logger.debugOn()) { |
| logger.debug("logout", "Subject is being logged out"); |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Attempt authentication |
| * |
| * @param usePasswdFromSharedState a flag to tell this method whether |
| * to retrieve the password from the sharedState. |
| */ |
| @SuppressWarnings("unchecked") // sharedState used as Map<String,Object> |
| private void attemptAuthentication(boolean usePasswdFromSharedState) |
| throws LoginException { |
| |
| // get the username and password |
| getUsernamePassword(usePasswdFromSharedState); |
| |
| String localPassword; |
| |
| // userCredentials is initialized in login() |
| if (((localPassword = userCredentials.getProperty(username)) == null) || |
| (! localPassword.equals(new String(password)))) { |
| |
| // username not found or passwords do not match |
| if (logger.debugOn()) { |
| logger.debug("login", "Invalid username or password"); |
| } |
| throw new FailedLoginException("Invalid username or password"); |
| } |
| |
| // Save the username and password in the shared state |
| // only if authentication succeeded |
| if (storePass && |
| !sharedState.containsKey(USERNAME_KEY) && |
| !sharedState.containsKey(PASSWORD_KEY)) { |
| sharedState.put(USERNAME_KEY, username); |
| sharedState.put(PASSWORD_KEY, password); |
| } |
| |
| // Create a new user principal |
| user = new JMXPrincipal(username); |
| |
| if (logger.debugOn()) { |
| logger.debug("login", |
| "User '" + username + "' successfully validated"); |
| } |
| } |
| |
| /* |
| * Read the password file. |
| */ |
| private void loadPasswordFile() throws IOException { |
| FileInputStream fis; |
| try { |
| fis = new FileInputStream(passwordFile); |
| } catch (SecurityException e) { |
| if (userSuppliedPasswordFile || hasJavaHomePermission) { |
| throw e; |
| } else { |
| final FilePermission fp = |
| new FilePermission(passwordFileDisplayName, "read"); |
| AccessControlException ace = new AccessControlException( |
| "access denied " + fp.toString()); |
| ace.setStackTrace(e.getStackTrace()); |
| throw ace; |
| } |
| } |
| try { |
| final BufferedInputStream bis = new BufferedInputStream(fis); |
| try { |
| userCredentials = new Properties(); |
| userCredentials.load(bis); |
| } finally { |
| bis.close(); |
| } |
| } finally { |
| fis.close(); |
| } |
| } |
| |
| /** |
| * Get the username and password. |
| * This method does not return any value. |
| * Instead, it sets global name and password variables. |
| * |
| * <p> Also note that this method will set the username and password |
| * values in the shared state in case subsequent LoginModules |
| * want to use them via use/tryFirstPass. |
| * |
| * @param usePasswdFromSharedState boolean that tells this method whether |
| * to retrieve the password from the sharedState. |
| */ |
| private void getUsernamePassword(boolean usePasswdFromSharedState) |
| throws LoginException { |
| |
| if (usePasswdFromSharedState) { |
| // use the password saved by the first module in the stack |
| username = (String)sharedState.get(USERNAME_KEY); |
| password = (char[])sharedState.get(PASSWORD_KEY); |
| return; |
| } |
| |
| // acquire username and password |
| if (callbackHandler == null) |
| throw new LoginException("Error: no CallbackHandler available " + |
| "to garner authentication information from the user"); |
| |
| Callback[] callbacks = new Callback[2]; |
| callbacks[0] = new NameCallback("username"); |
| callbacks[1] = new PasswordCallback("password", false); |
| |
| try { |
| callbackHandler.handle(callbacks); |
| username = ((NameCallback)callbacks[0]).getName(); |
| char[] tmpPassword = ((PasswordCallback)callbacks[1]).getPassword(); |
| password = new char[tmpPassword.length]; |
| System.arraycopy(tmpPassword, 0, |
| password, 0, tmpPassword.length); |
| ((PasswordCallback)callbacks[1]).clearPassword(); |
| |
| } catch (IOException ioe) { |
| LoginException le = new LoginException(ioe.toString()); |
| throw EnvHelp.initCause(le, ioe); |
| } catch (UnsupportedCallbackException uce) { |
| LoginException le = new LoginException( |
| "Error: " + uce.getCallback().toString() + |
| " not available to garner authentication " + |
| "information from the user"); |
| throw EnvHelp.initCause(le, uce); |
| } |
| } |
| |
| /** |
| * Clean out state because of a failed authentication attempt |
| */ |
| private void cleanState() { |
| username = null; |
| if (password != null) { |
| Arrays.fill(password, ' '); |
| password = null; |
| } |
| |
| if (clearPass) { |
| sharedState.remove(USERNAME_KEY); |
| sharedState.remove(PASSWORD_KEY); |
| } |
| } |
| } |