| CreditCard.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.util;
21
22 import com.liferay.portal.kernel.util.StringPool;
23 import com.liferay.portal.kernel.util.StringUtil;
24 import com.liferay.portal.kernel.util.Validator;
25
26 /**
27 * <a href="CreditCard.java.html"><b><i>View Source</i></b></a>
28 *
29 * @author Brian Wing Shun Chan
30 *
31 */
32 public class CreditCard {
33
34 public static String hide(String number) {
35 return hide(number, StringPool.STAR);
36 }
37
38 public static String hide(String number, String x) {
39 if (number == null) {
40 return number;
41 }
42
43 int numberLen = number.length();
44
45 if (numberLen > 4) {
46 StringBuilder sb = new StringBuilder();
47
48 for (int i = 0; i < numberLen - 4; i++) {
49 sb.append(x);
50 }
51
52 sb.append(number.substring(numberLen - 4, numberLen));
53
54 number = sb.toString();
55 }
56
57 return number;
58 }
59
60 public static boolean isValid(String number, String type) {
61 number = StringUtil.extractDigits(number);
62
63 if (type.equals("visa")) {
64 if (!number.startsWith("4")) {
65 return false;
66 }
67
68 if (number.length() != 13 &&
69 number.length() != 16) {
70
71 return false;
72 }
73 }
74 else if (type.equals("mastercard")) {
75 if (!number.startsWith("51") &&
76 !number.startsWith("52") &&
77 !number.startsWith("53") &&
78 !number.startsWith("54") &&
79 !number.startsWith("55")) {
80
81 return false;
82 }
83
84 if (number.length() != 16) {
85 return false;
86 }
87 }
88 else if (type.equals("discover")) {
89 if (!number.startsWith("6011")) {
90
91 return false;
92 }
93
94 if (number.length() != 16) {
95 return false;
96 }
97 }
98 else if (type.equals("amex")) {
99 if (!number.startsWith("34") &&
100 !number.startsWith("35") &&
101 !number.startsWith("36") &&
102 !number.startsWith("37")) {
103
104 return false;
105 }
106
107 if (number.length() != 15) {
108 return false;
109 }
110 }
111
112 return Validator.isLUHN(number);
113 }
114
115 }