| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.kerby.kerberos.tool.kadmin.command; |
| |
| import org.apache.kerby.KOptions; |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.admin.kadmin.KadminOption; |
| import org.apache.kerby.kerberos.kerb.admin.kadmin.local.LocalKadmin; |
| import org.apache.kerby.kerberos.tool.kadmin.ToolUtil; |
| |
| import java.io.Console; |
| import java.util.Arrays; |
| import java.util.Scanner; |
| |
| public class ChangePasswordCommand extends KadminCommand { |
| private static final String USAGE = "Usage: change_password [-randkey] " |
| + "[-keepold] [-e keysaltlist] [-pw password] principal"; |
| |
| private KOptions kOptions; |
| |
| public ChangePasswordCommand(LocalKadmin kadmin) { |
| super(kadmin); |
| } |
| |
| @Override |
| public void execute(String input) { |
| String[] commands = input.split("\\s"); |
| String principal = commands[commands.length - 1]; |
| String password; |
| |
| if (commands.length <= 1) { |
| System.err.println(USAGE); |
| return; |
| } |
| |
| if (commands.length == 2) { //only principal is given |
| password = getPassword(principal); |
| if (password == null) { |
| System.out.println("Did not get new password successfully. Please try again"); |
| return; |
| } |
| try { |
| getKadmin().changePassword(principal, password); |
| System.out.println("Update password success."); |
| } catch (KrbException e) { |
| System.err.println("Fail to update password. " + e.getCause()); |
| } |
| } else if (commands.length > 2) { |
| kOptions = ToolUtil.parseOptions(commands, 1, commands.length - 2); |
| if (kOptions == null) { |
| System.err.println(USAGE); |
| return; |
| } |
| if (kOptions.contains(KadminOption.PW)) { |
| password = kOptions.getStringOption(KadminOption.PW); |
| try { |
| getKadmin().changePassword(principal, password); |
| System.out.println("Update password success."); |
| } catch (KrbException e) { |
| System.err.println("Fail to update password. " + e.getMessage()); |
| } |
| } else if (kOptions.contains(KadminOption.RANDKEY)) { |
| try { |
| getKadmin().updateKeys(principal); |
| } catch (KrbException e) { |
| System.err.println("Fail to update key. " + e.getMessage()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Get password from console |
| */ |
| private String getPassword(String principal) { |
| String passwordOnce; |
| String passwordTwice; |
| |
| Console console = System.console(); |
| if (console == null) { |
| System.out.println("Couldn't get Console instance, " |
| + "maybe you're running this from within an IDE. " |
| + "Use scanner to read password."); |
| Scanner scanner = new Scanner(System.in, "UTF-8"); |
| passwordOnce = getPassword(scanner, |
| "Please enter new password \"" + principal + "\":"); |
| passwordTwice = getPassword(scanner, |
| "Please re-enter password =\"" + principal + "\":"); |
| |
| } else { |
| passwordOnce = getPassword(console, |
| "Please enter new password \"" + principal + "\":"); |
| passwordTwice = getPassword(console, |
| "Please re-enter password \"" + principal + "\":"); |
| } |
| |
| if (!passwordOnce.equals(passwordTwice)) { |
| System.err.println("change_password: Password mismatch while reading password for \"" + principal + "\"."); |
| return null; |
| } |
| return passwordOnce; |
| } |
| |
| private String getPassword(Scanner scanner, String prompt) { |
| System.out.println(prompt); |
| return scanner.nextLine().trim(); |
| } |
| |
| private String getPassword(Console console, String prompt) { |
| console.printf(prompt); |
| char[] passwordChars = console.readPassword(); |
| String password = new String(passwordChars).trim(); |
| Arrays.fill(passwordChars, ' '); |
| return password; |
| } |
| } |