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1
9 package org.jboss.security.jce;
10
11 import java.security.Provider  ;
12 import java.security.Security ;
13 import java.util.ArrayList ;
14 import java.util.Arrays ;
15 import java.util.Iterator ;
16
17 import org.jboss.system.ServiceMBeanSupport;
18 import org.w3c.dom.Element ;
19 import org.w3c.dom.Node ;
20 import org.w3c.dom.NodeList ;
21
22
44 public class JCEProviderService extends ServiceMBeanSupport implements JCEProviderServiceMBean
45 {
46 private ArrayList addedProviders = new ArrayList ();
47 private Element providers;
48
49 public void setJceProviders(Element element)
50 {
51 providers = element;
52 if (getState() != UNREGISTERED)
53 {
54 synchronized (JCEProviderService.class)
55 {
56 removeProviders();
57 loadProviders();
58 }
59 }
60 }
61
62 public Element getJceProviders()
63 {
64 return providers;
65 }
66
67 protected void createService() throws Exception
68 {
69 synchronized (JCEProviderService.class)
71 {
72 loadProviders();
73 }
74 }
75
76 protected void destroyService()
77 {
78 synchronized (JCEProviderService.class)
80 {
81 removeProviders();
82 }
83 }
84
85 private void loadProviders()
86 {
87 int n = 0;
88 if (providers != null)
89 {
90 addedProviders = new ArrayList ();
91 NodeList reqdProviders = providers.getElementsByTagName("provider");
92 n = reqdProviders.getLength();
93
95 for (int i = 0; i < n; i++)
96 {
97 Provider provider;
98 Node reqdProvider = reqdProviders.item(i);
99
100 String providerName;
101 String providerClass;
102 int requestedPosition = 0;
103
104 if (Node.ELEMENT_NODE == reqdProvider.getNodeType())
105 {
106 Element prov = (Element ) reqdProvider;
107 if (prov.hasAttribute("class"))
108 {
109 providerClass = prov.getAttribute("class");
110 }
111 else
112 {
113 log.warn("A provider element must, at the very least, have a class attribute: " + prov);
114 continue;
115 }
116
117 try
118 {
119 provider = (Provider ) Class.forName(providerClass).newInstance();
120 }
121 catch (InstantiationException e1)
122 {
123 log.warn("Unable to instantiate an instance of the JCE Provider class " + providerClass, e1);
124 continue;
125 }
126 catch (IllegalAccessException e1)
127 {
128 log.warn("No permission to access the JCE Provider class " + providerClass, e1);
129 continue;
130 }
131 catch (ClassNotFoundException e1)
132 {
133 log.warn("Could not find the JCE Provider class " + providerClass, e1);
134 continue;
135 }
136 catch (ClassCastException e1)
137 {
138 log.warn("The Class " + providerClass + " is not a java.security.Provider");
139 continue;
140 }
141
142 providerName = provider.getName();
143
144 if (prov.hasAttribute("position"))
145 {
146 try
147 {
148 requestedPosition = Integer.parseInt(prov.getAttribute("position"));
149 }
150 catch (NumberFormatException e)
151 {
152 log.warn("the position '" + prov.getAttribute("position")
153 + "' is not a valid number. This provider has to go to the end of the line. " + prov);
154 }
155 }
156
157 int pos;
158 if (requestedPosition < 1)
159 {
160 pos = Security.addProvider(provider);
161 }
162 else
163 {
164 pos = Security.insertProviderAt(provider, requestedPosition);
165 }
166
167 if (pos == -1)
168 {
169 int exPos = Arrays.asList(Security.getProviders()).indexOf(provider);
170 log.info("The provider " + providerName + " already exists at position " + exPos);
171 }
172 else if (requestedPosition >= 1 && pos != requestedPosition)
173 {
174 log.info("The position " + requestedPosition + " was requested for Provider " + providerName
175 + " but it was added at position " + pos);
176 addedProviders.add(providerName);
177 }
178 else
179 {
180 log.info("The Provider " + providerName + " was added at position " + pos);
181 addedProviders.add(providerName);
182 }
183 }
184 else
185 {
186 if (log.isDebugEnabled())
187 log.debug("Ignoring node" + reqdProvider);
188 }
189 }
190
191 if (addedProviders.size() == 1)
192 log.info(addedProviders.size() + " JCE Provider was actually loaded.");
193 else
194 log.info(addedProviders.size() + " JCE Providers were actually loaded.");
195
196 }
197 if (n < 1)
198 log.info("No JCE Providers were requested.");
199 }
200 private void removeProviders()
201 {
202 for (Iterator iter = addedProviders.iterator(); iter.hasNext();)
203 {
204 String providerName = (String ) iter.next();
205 try
206 {
207 Security.removeProvider(providerName);
208 }
209 catch (Exception e)
210 {
211 log.warn("Failed to remove Provider " + providerName);
212 }
213 }
214 }
215 }
216 |
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