| PwdGenerator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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 public class PwdGenerator {
35
36 public static String KEY1 = "0123456789";
37
38 public static String KEY2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
39
40 public static String KEY3 = "abcdefghijklmnopqrstuvwxyz";
41
42 public static String getPinNumber() {
43 return _getPassword(KEY1, 4, true);
44 }
45
46 public static String getPassword() {
47 return getPassword(8);
48 }
49
50 public static String getPassword(int length) {
51 return _getPassword(KEY1 + KEY2 + KEY3, length, true);
52 }
53
54 public static String getPassword(String key, int length) {
55 return getPassword(key, length, true);
56 }
57
58 public static String getPassword(
59 String key, int length, boolean useAllKeys) {
60
61 return _getPassword(key, length, useAllKeys);
62 }
63
64 private static String _getPassword(
65 String key, int length, boolean useAllKeys) {
66
67 StringBuilder sb = new StringBuilder();
68
69 for (int i = 0; i < length; i++) {
70 sb.append(key.charAt((int)(Math.random() * key.length())));
71 }
72
73 String password = sb.toString();
74
75 if (!useAllKeys) {
76 return password;
77 }
78
79 boolean invalidPassword = false;
80
81 if (key.contains(KEY1)) {
82 if (Validator.isNull(StringUtil.extractDigits(password))) {
83 invalidPassword = true;
84 }
85 }
86
87 if (key.contains(KEY2)) {
88 if (password.equals(password.toLowerCase())) {
89 invalidPassword = true;
90 }
91 }
92
93 if (key.contains(KEY3)) {
94 if (password.equals(password.toUpperCase())) {
95 invalidPassword = true;
96 }
97 }
98
99 if (invalidPassword) {
100 return _getPassword(key, length, useAllKeys);
101 }
102
103 return password;
104 }
105
106 }