| PwdGenerator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.StringUtil;
26 import com.liferay.portal.kernel.util.Validator;
27
28 /**
29 * <a href="PwdGenerator.java.html"><b><i>View Source</i></b></a>
30 *
31 * @author Brian Wing Shun Chan
32 * @author Amos Fong
33 *
34 */
35 public class PwdGenerator {
36
37 public static String KEY1 = "0123456789";
38
39 public static String KEY2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
40
41 public static String KEY3 = "abcdefghijklmnopqrstuvwxyz";
42
43 public static String getPinNumber() {
44 return _getPassword(KEY1, 4, true);
45 }
46
47 public static String getPassword() {
48 return getPassword(8);
49 }
50
51 public static String getPassword(int length) {
52 return _getPassword(KEY1 + KEY2 + KEY3, length, true);
53 }
54
55 public static String getPassword(String key, int length) {
56 return getPassword(key, length, true);
57 }
58
59 public static String getPassword(
60 String key, int length, boolean useAllKeys) {
61
62 return _getPassword(key, length, useAllKeys);
63 }
64
65 private static String _getPassword(
66 String key, int length, boolean useAllKeys) {
67
68 StringBuilder sb = new StringBuilder();
69
70 for (int i = 0; i < length; i++) {
71 sb.append(key.charAt((int)(Math.random() * key.length())));
72 }
73
74 String password = sb.toString();
75
76 if (!useAllKeys) {
77 return password;
78 }
79
80 boolean invalidPassword = false;
81
82 if (key.contains(KEY1)) {
83 if (Validator.isNull(StringUtil.extractDigits(password))) {
84 invalidPassword = true;
85 }
86 }
87
88 if (key.contains(KEY2)) {
89 if (password.equals(password.toLowerCase())) {
90 invalidPassword = true;
91 }
92 }
93
94 if (key.contains(KEY3)) {
95 if (password.equals(password.toUpperCase())) {
96 invalidPassword = true;
97 }
98 }
99
100 if (invalidPassword) {
101 return _getPassword(key, length, useAllKeys);
102 }
103
104 return password;
105 }
106
107 }