1 /*
2 * Copyright 2014 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package org.jboss.netty.handler.ssl.util;
18
19 import javax.net.ssl.ManagerFactoryParameters;
20 import javax.net.ssl.TrustManager;
21 import javax.net.ssl.TrustManagerFactory;
22 import javax.net.ssl.TrustManagerFactorySpi;
23 import java.security.InvalidAlgorithmParameterException;
24 import java.security.KeyStore;
25 import java.security.KeyStoreException;
26 import java.security.Provider;
27
28 /**
29 * Helps to implement a custom {@link TrustManagerFactory}.
30 */
31 public abstract class SimpleTrustManagerFactory extends TrustManagerFactory {
32
33 private static final Provider PROVIDER = new Provider("", 0.0, "") {
34 private static final long serialVersionUID = -2680540247105807895L;
35 };
36
37 /**
38 * {@link SimpleTrustManagerFactorySpi} must have a reference to {@link SimpleTrustManagerFactory}
39 * to delegate its callbacks back to {@link SimpleTrustManagerFactory}. However, it is impossible to do so,
40 * because {@link TrustManagerFactory} requires {@link TrustManagerFactorySpi} at construction time and
41 * does not provide a way to access it later.
42 *
43 * To work around this issue, we use an ugly hack which uses a {@link ThreadLocal}.
44 */
45 private static final ThreadLocal<SimpleTrustManagerFactorySpi> CURRENT_SPI =
46 new ThreadLocal<SimpleTrustManagerFactorySpi>() {
47 @Override
48 protected SimpleTrustManagerFactorySpi initialValue() {
49 return new SimpleTrustManagerFactorySpi();
50 }
51 };
52
53 /**
54 * Creates a new instance.
55 */
56 protected SimpleTrustManagerFactory() {
57 this("");
58 }
59
60 /**
61 * Creates a new instance.
62 *
63 * @param name the name of this {@link TrustManagerFactory}
64 */
65 protected SimpleTrustManagerFactory(String name) {
66 super(CURRENT_SPI.get(), PROVIDER, name);
67 CURRENT_SPI.get().init(this);
68 CURRENT_SPI.remove();
69
70 if (name == null) {
71 throw new NullPointerException("name");
72 }
73 }
74
75 /**
76 * Initializes this factory with a source of certificate authorities and related trust material.
77 *
78 * @see TrustManagerFactorySpi#engineInit(KeyStore)
79 */
80 protected abstract void engineInit(KeyStore keyStore) throws Exception;
81
82 /**
83 * Initializes this factory with a source of provider-specific key material.
84 *
85 * @see TrustManagerFactorySpi#engineInit(ManagerFactoryParameters)
86 */
87 protected abstract void engineInit(ManagerFactoryParameters managerFactoryParameters) throws Exception;
88
89 /**
90 * Returns one trust manager for each type of trust material.
91 *
92 * @see TrustManagerFactorySpi#engineGetTrustManagers()
93 */
94 protected abstract TrustManager[] engineGetTrustManagers();
95
96 static final class SimpleTrustManagerFactorySpi extends TrustManagerFactorySpi {
97
98 private SimpleTrustManagerFactory parent;
99
100 void init(SimpleTrustManagerFactory parent) {
101 this.parent = parent;
102 }
103
104 @Override
105 protected void engineInit(KeyStore keyStore) throws KeyStoreException {
106 try {
107 parent.engineInit(keyStore);
108 } catch (KeyStoreException e) {
109 throw e;
110 } catch (Exception e) {
111 throw new KeyStoreException(e);
112 }
113 }
114
115 @Override
116 protected void engineInit(
117 ManagerFactoryParameters managerFactoryParameters) throws InvalidAlgorithmParameterException {
118 try {
119 parent.engineInit(managerFactoryParameters);
120 } catch (InvalidAlgorithmParameterException e) {
121 throw e;
122 } catch (Exception e) {
123 throw new InvalidAlgorithmParameterException(e);
124 }
125 }
126
127 @Override
128 protected TrustManager[] engineGetTrustManagers() {
129 return parent.engineGetTrustManagers();
130 }
131 }
132 }
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