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1
10
11 package org.mule.transformers.encryption;
12
13 import org.mule.MuleManager;
14 import org.mule.config.i18n.Message;
15 import org.mule.config.i18n.Messages;
16 import org.mule.transformers.AbstractTransformer;
17 import org.mule.umo.UMOEncryptionStrategy;
18 import org.mule.umo.lifecycle.InitialisationException;
19 import org.mule.umo.security.CryptoFailureException;
20 import org.mule.umo.transformer.TransformerException;
21
22 import java.io.UnsupportedEncodingException  ;
23
24
31 public abstract class AbstractEncryptionTransformer extends AbstractTransformer
32 {
33 private UMOEncryptionStrategy strategy = null;
34 private String strategyName = null;
35
36 public AbstractEncryptionTransformer()
37 {
38 registerSourceType(byte[].class);
39 registerSourceType(String .class);
40 setReturnClass(byte[].class);
41 }
42
43 public Object doTransform(Object src, String encoding) throws TransformerException
44 {
45 byte[] buf;
46 if (src instanceof String )
47 {
48 buf = src.toString().getBytes();
49 }
50 else
51 {
52 buf = (byte[])src;
53 }
54 try
55 {
56 byte[] result = getTransformedBytes(buf);
57 if (getReturnClass().equals(String .class))
58 {
59 if (encoding != null)
60 {
61 try
62 {
63 return new String (result, encoding);
64 }
65 catch (UnsupportedEncodingException ex)
66 {
67 return new String (result);
68 }
69 }
70 else
71 {
72 return new String (result);
73 }
74 }
75 else
76 {
77 return result;
78 }
79 }
80 catch (CryptoFailureException e)
81 {
82 throw new TransformerException(this, e);
83 }
84 }
85
86 protected abstract byte[] getTransformedBytes(byte[] buffer) throws CryptoFailureException;
87
88
94 public void initialise() throws InitialisationException
95 {
96 if (strategyName != null)
97 {
98 if (MuleManager.getInstance().getSecurityManager() == null)
99 {
100 if (strategy == null)
101 {
102 throw new InitialisationException(new Message(Messages.AUTH_SECURITY_MANAGER_NOT_SET),
103 this);
104
105 }
106 }
107 else
108 {
109 strategy = MuleManager.getInstance().getSecurityManager().getEncryptionStrategy(strategyName);
110 }
111 }
112 if (strategy == null)
113 {
114 throw new InitialisationException(new Message(Messages.ENCRYPT_STRATEGY_NOT_SET), this);
115 }
116 }
117
118 public UMOEncryptionStrategy getStrategy()
119 {
120 return strategy;
121 }
122
123 public void setStrategy(UMOEncryptionStrategy strategy)
124 {
125 this.strategy = strategy;
126 }
127
128 public String getStrategyName()
129 {
130 return strategyName;
131 }
132
133 public void setStrategyName(String strategyName)
134 {
135 this.strategyName = strategyName;
136 }
137 }
138 |
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