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1
19
20 package org.efs.openreports.util;
21
22 import java.io.Serializable  ;
23 import java.sql.*;
24
25 import org.apache.commons.codec.DecoderException;
26 import org.apache.commons.codec.EncoderException;
27 import org.apache.commons.codec.net.BCodec;
28 import org.apache.log4j.Logger;
29
30 import org.hibernate.Hibernate;
31 import org.hibernate.HibernateException;
32 import org.hibernate.usertype.*;
33
34 public class EncryptedStringUserType implements UserType
35 {
36 protected static Logger log = Logger.getLogger(EncryptedStringUserType.class);
37
38 private static final int[] TYPES = new int[]{Types.VARCHAR};
39
40 private BCodec bCodec = new BCodec();
41
42 public int[] sqlTypes()
43 {
44 return TYPES;
45 }
46
47 public Class returnedClass()
48 {
49 return String .class;
50 }
51
52 public boolean equals(Object x, Object y) throws HibernateException
53 {
54 if (x == y)
55 {
56 return true;
57 }
58
59 if (x == null)
60 {
61 return false;
62 }
63
64 return x.equals(y);
65 }
66
67 public Object nullSafeGet(ResultSet rs, String [] names, Object owner)
68 throws HibernateException, SQLException
69 {
70 String encryptedValue = (String ) Hibernate.STRING.nullSafeGet(rs, names[0]);
71
72 if (encryptedValue != null)
73 {
74 return decrypt(encryptedValue);
75 }
76 else
77 {
78 return null;
79 }
80 }
81
82 public void nullSafeSet(PreparedStatement pStmt, Object value, int index)
83 throws HibernateException, SQLException
84 {
85 if (value != null)
86 {
87 String encryptedValue = encrypt((String ) value);
88 Hibernate.STRING.nullSafeSet(pStmt, encryptedValue, index);
89 }
90 else
91 {
92 Hibernate.STRING.nullSafeSet(pStmt, value, index);
93 }
94 }
95
96 public Object deepCopy(Object value) throws HibernateException
97 {
98 if (value == null)
99 {
100 return null;
101 }
102 else
103 {
104 return new String ((String ) value);
105 }
106 }
107
108 public boolean isMutable()
109 {
110 return false;
111 }
112
113 protected String encrypt(String value)
114 {
115 try
116 {
117 return bCodec.encode(value);
118 }
119 catch(EncoderException ee)
120 {
121 log.warn("ENCRYPT - " + value + " : " + ee.getMessage());
122 return value;
123 }
124 }
125
126 protected String decrypt(String value)
127 {
128 try
129 {
130 return bCodec.decode(value);
131 }
132 catch(DecoderException de)
133 {
134 log.warn("DECRYPT - " + value + " : " + de.getMessage());
135 return value;
136 }
137 }
138
139 public int hashCode(Object arg0) throws HibernateException
140 {
141 return arg0.hashCode();
142 }
143
144
145 public Object replace(Object arg0, Object arg1, Object arg2)
146 throws HibernateException
147 {
148 return deepCopy(arg0);
149 }
150
151 public Object assemble(Serializable arg0, Object arg1) throws HibernateException
152 {
153 return deepCopy(arg0);
154 }
155
156 public Serializable disassemble(Object value)
157 {
158 return (Serializable ) deepCopy(value);
159 }
160
161 } |
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