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13 package org.eclipse.jetty.osgi.boot.jasper;
14
15 import java.io.File;
16 import java.io.InputStream;
17 import java.net.URL;
18 import java.util.ArrayList;
19 import java.util.HashSet;
20
21 import javax.servlet.Servlet;
22 import javax.servlet.jsp.JspContext;
23 import javax.servlet.jsp.JspFactory;
24
25 import org.apache.jasper.Constants;
26 import org.apache.jasper.compiler.Localizer;
27 import org.apache.jasper.xmlparser.ParserUtils;
28 import org.eclipse.jetty.osgi.boot.JettyBootstrapActivator;
29 import org.eclipse.jetty.osgi.boot.OSGiAppProvider;
30 import org.eclipse.jetty.osgi.boot.utils.BundleFileLocatorHelper;
31 import org.eclipse.jetty.osgi.boot.utils.WebappRegistrationCustomizer;
32 import org.osgi.framework.Bundle;
33 import org.osgi.framework.FrameworkUtil;
34 import org.xml.sax.EntityResolver;
35 import org.xml.sax.InputSource;
36 import org.xml.sax.SAXException;
37
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45 public class WebappRegistrationCustomizerImpl implements WebappRegistrationCustomizer
46 {
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53 private static String DEFAULT_JSTL_BUNDLE_CLASS = "org.apache.taglibs.standard.tag.el.core.WhenTag";
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70 private static String DEFAULT_JSP_FACTORY_IMPL_CLASS = "org.apache.jasper.runtime.JspFactoryImpl";
71
72 public WebappRegistrationCustomizerImpl()
73 {
74 fixupDtdResolution();
75
76 try
77 {
78
79 Class cl = getClass().getClassLoader().loadClass("org.apache.jasper.servlet.JspServlet");
80
81 }
82 catch (Exception e)
83 {
84 System.err.println("Unable to locate the JspServlet: jsp support unavailable.");
85 e.printStackTrace();
86 return;
87 }
88 try
89 {
90
91 JspFactory fact = JspFactory.getDefaultFactory();
92 if (fact == null)
93 {
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97 fact = (JspFactory)JettyBootstrapActivator.class.getClassLoader()
98 .loadClass(DEFAULT_JSP_FACTORY_IMPL_CLASS).newInstance();
99 JspFactory.setDefaultFactory(fact);
100 }
101
102 }
103 catch (Exception e)
104 {
105 System.err.println("Unable to set the JspFactory: jsp support incomplete.");
106 e.printStackTrace();
107 }
108 }
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123 public URL[] getJarsWithTlds(OSGiAppProvider provider, BundleFileLocatorHelper locatorHelper) throws Exception
124 {
125 HashSet<Class<?>> classesToAddToTheTldBundles = new HashSet<Class<?>>();
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131 Class<?> jstlClass = WebappRegistrationCustomizerImpl.class.getClassLoader().loadClass(DEFAULT_JSTL_BUNDLE_CLASS);
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133 classesToAddToTheTldBundles.add(jstlClass);
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135 ArrayList<URL> urls = new ArrayList<URL>();
136 for (Class<?> cl : classesToAddToTheTldBundles)
137 {
138 Bundle tldBundle = FrameworkUtil.getBundle(cl);
139 File tldBundleLocation = locatorHelper.getBundleInstallLocation(tldBundle);
140 if (tldBundleLocation != null && tldBundleLocation.isDirectory())
141 {
142
143 for (File f : tldBundleLocation.listFiles())
144 {
145 if (f.getName().endsWith(".jar") && f.isFile())
146 {
147 urls.add(f.toURI().toURL());
148 }
149 else if (f.isDirectory() && f.getName().equals("lib"))
150 {
151 for (File f2 : tldBundleLocation.listFiles())
152 {
153 if (f2.getName().endsWith(".jar") && f2.isFile())
154 {
155 urls.add(f2.toURI().toURL());
156 }
157 }
158 }
159 }
160
161 }
162 else if (tldBundleLocation != null)
163 {
164 urls.add(tldBundleLocation.toURI().toURL());
165 }
166 }
167 return urls.toArray(new URL[urls.size()]);
168 }
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184 void fixupDtdResolution()
185 {
186 try
187 {
188 ParserUtils.setEntityResolver(new MyFixedupEntityResolver());
189
190 }
191 catch (Exception e)
192 {
193 e.printStackTrace();
194 }
195
196 }
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201 static class MyFixedupEntityResolver implements EntityResolver
202 {
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206 static final String[] CACHED_DTD_PUBLIC_IDS =
207 { Constants.TAGLIB_DTD_PUBLIC_ID_11, Constants.TAGLIB_DTD_PUBLIC_ID_12,
208 Constants.WEBAPP_DTD_PUBLIC_ID_22, Constants.WEBAPP_DTD_PUBLIC_ID_23, };
209
210 static final String[] CACHED_DTD_RESOURCE_PATHS =
211 { Constants.TAGLIB_DTD_RESOURCE_PATH_11,
212 Constants.TAGLIB_DTD_RESOURCE_PATH_12,
213 Constants.WEBAPP_DTD_RESOURCE_PATH_22,
214 Constants.WEBAPP_DTD_RESOURCE_PATH_23, };
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222 public InputSource resolveEntity(String publicId, String systemId) throws SAXException
223 {
224 for (int i = 0; i < CACHED_DTD_PUBLIC_IDS.length; i++)
225 {
226 String cachedDtdPublicId = CACHED_DTD_PUBLIC_IDS[i];
227 if (cachedDtdPublicId.equals(publicId))
228 {
229 String resourcePath = CACHED_DTD_RESOURCE_PATHS[i];
230 InputStream input = null;
231 input = Servlet.class.getResourceAsStream(resourcePath);
232 if (input == null)
233 {
234 input = JspContext.class.getResourceAsStream(resourcePath);
235 if (input == null)
236 {
237
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239 input = this.getClass().getResourceAsStream(resourcePath);
240 }
241 }
242 if (input == null)
243 {
244 throw new SAXException(Localizer.getMessage("jsp.error.internal.filenotfound",resourcePath));
245 }
246 InputSource isrc = new InputSource(input);
247 return isrc;
248 }
249 }
250
251 return null;
252 }
253 }
254
255 }