Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
SecurityProviderInitializer |
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| 1.8;1.8 | ||||
SecurityProviderInitializer$Initializer |
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| 1.8;1.8 |
1 | /* | |
2 | * Copyright (c) 2009, Ergon Informatik AG (http://www.ergon.ch) | |
3 | * All rights reserved. | |
4 | * | |
5 | * Licensed under the Open Permis License which accompanies this distribution, | |
6 | * and is available at http://www.openpermis.org/BSDlicenceKent.txt | |
7 | */ | |
8 | package org.openpermis.security; | |
9 | ||
10 | import java.io.IOException; | |
11 | import java.io.InputStreamReader; | |
12 | import java.io.Reader; | |
13 | import java.net.URL; | |
14 | import java.security.Provider; | |
15 | import java.security.Security; | |
16 | ||
17 | import org.picocontainer.DefaultPicoContainer; | |
18 | import org.picocontainer.PicoContainer; | |
19 | import org.picocontainer.script.ContainerBuilder; | |
20 | import org.picocontainer.script.xml.XMLContainerBuilder; | |
21 | import org.slf4j.Logger; | |
22 | import org.slf4j.LoggerFactory; | |
23 | ||
24 | ||
25 | /** | |
26 | * Static hook to initialize the security provider from a Pico configuration. | |
27 | * @since 0.3.0 | |
28 | */ | |
29 | public final class SecurityProviderInitializer { | |
30 | ||
31 | //---- Static | |
32 | ||
33 | /** | |
34 | * The logger object of this class. | |
35 | * @since 0.3.0 | |
36 | */ | |
37 | 1 | private static final Logger LOGGER = |
38 | LoggerFactory.getLogger(SecurityProviderInitializer.class); | |
39 | ||
40 | /** | |
41 | * JCE pico container configuration file name. | |
42 | * @since 0.3.0 | |
43 | */ | |
44 | private static final String JCE_CONFIGURATION = "openpermis-jce.xml"; | |
45 | ||
46 | /** | |
47 | * Reads the <tt>openpermis-jce.xml</tt> in the top level folder of the classpath and | |
48 | * initializes the security provider according to its contents. | |
49 | * @since 0.3.0 | |
50 | */ | |
51 | public static void initializeSecurityProvider () { | |
52 | 0 | initializeSecurityProvider(new Initializer()); |
53 | 0 | } |
54 | ||
55 | /** | |
56 | * Reads the <tt>openpermis-jce.xml</tt> in the top level folder of the classpath and | |
57 | * initializes the security provider according to its contents. | |
58 | * @param initializer the actual initializer to use. | |
59 | * @since 0.3.0 | |
60 | */ | |
61 | protected static void initializeSecurityProvider (Initializer initializer) { | |
62 | 1 | ClassLoader cl = Thread.currentThread().getContextClassLoader(); |
63 | 1 | if (cl == null) { |
64 | 0 | cl = SecurityProviderInitializer.class.getClassLoader(); |
65 | } | |
66 | 1 | initializeSecurityProvider(cl.getResource(JCE_CONFIGURATION), cl, initializer); |
67 | 1 | } |
68 | ||
69 | /** | |
70 | * Initializes the security provider using the configuration and class loader specified. | |
71 | * @param url the configuration URL that points to a Pico XML configuration. | |
72 | * @param cl the class loader to load the configuration classes from. | |
73 | * @param initializer the actual initializer to use. | |
74 | * @since 0.3.0 | |
75 | */ | |
76 | protected static void initializeSecurityProvider ( | |
77 | URL url, ClassLoader cl, Initializer initializer | |
78 | ) { | |
79 | try { | |
80 | 3 | final Reader rd = new InputStreamReader(url.openStream()); |
81 | try { | |
82 | 3 | final ContainerBuilder builder = new XMLContainerBuilder(rd, cl); |
83 | 3 | final PicoContainer container = builder.buildContainer( |
84 | new DefaultPicoContainer(), null, true | |
85 | ); | |
86 | 3 | for (Provider provider : container.getComponents(java.security.Provider.class)) { |
87 | 4 | LOGGER.debug("Adding security provider [{}].", provider.getClass().getName()); |
88 | 4 | initializer.addProvider(provider); |
89 | } | |
90 | } finally { | |
91 | 0 | try { |
92 | 3 | rd.close(); |
93 | 0 | } catch (IOException e) { |
94 | 0 | LOGGER.debug("Failed to close the JCE configuration file.", e); |
95 | 3 | } |
96 | 0 | } |
97 | 0 | } catch (IOException e) { |
98 | 0 | LOGGER.warn("Cannot read JCE configuration [" + url.toString() + "].", e); |
99 | 3 | } |
100 | 3 | } |
101 | ||
102 | //---- Constructors | |
103 | ||
104 | /** | |
105 | * Objects of this class cannot be instantiated. | |
106 | * @since 0.3.0 | |
107 | */ | |
108 | private SecurityProviderInitializer () { | |
109 | 0 | super(); |
110 | 0 | } |
111 | ||
112 | //---- Initializer | |
113 | ||
114 | /** | |
115 | * Initializer class that sets the actual security provider. | |
116 | * @since 0.3.0 | |
117 | */ | |
118 | 0 | protected static class Initializer { |
119 | ||
120 | /** | |
121 | * Adds a security provider using {@link Security#addProvider(Provider)}. | |
122 | * @param provider the provider to add. | |
123 | * @since 0.3.0 | |
124 | */ | |
125 | public void addProvider (Provider provider) { | |
126 | 0 | Security.addProvider(provider); |
127 | 0 | } |
128 | ||
129 | } | |
130 | ||
131 | } |