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annotate src/org/eclipse/jetty/server/handler/ContextHandler.java @ 994:4e9d373bf6e9

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remove ContextHandler.Context
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 18 Oct 2016 16:34:18 -0600
parents d9d95acded81
children 0eba8f555c19
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.server.handler;
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20
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21 import java.io.File;
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22 import java.io.IOException;
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23 import java.io.InputStream;
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24 import java.net.MalformedURLException;
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25 import java.net.URL;
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26 import java.net.URLClassLoader;
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27 import java.security.AccessController;
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28 import java.util.ArrayList;
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29 import java.util.Arrays;
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30 import java.util.Collections;
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31 import java.util.Enumeration;
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32 import java.util.EventListener;
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33 import java.util.HashMap;
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34 import java.util.HashSet;
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35 import java.util.Iterator;
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36 import java.util.List;
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37 import java.util.Locale;
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38 import java.util.Map;
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39 import java.util.Set;
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40 import java.util.concurrent.CopyOnWriteArrayList;
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41
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42 import javax.servlet.RequestDispatcher;
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43 import javax.servlet.Servlet;
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44 import javax.servlet.ServletContext;
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45 import javax.servlet.ServletContextAttributeEvent;
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46 import javax.servlet.ServletContextAttributeListener;
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47 import javax.servlet.ServletContextEvent;
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48 import javax.servlet.ServletContextListener;
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49 import javax.servlet.ServletException;
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50 import javax.servlet.ServletRegistration;
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51 import javax.servlet.ServletRequestAttributeListener;
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52 import javax.servlet.ServletRequestEvent;
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53 import javax.servlet.ServletRequestListener;
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54 import javax.servlet.SessionCookieConfig;
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55 import javax.servlet.SessionTrackingMode;
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56 import javax.servlet.Filter;
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57 import javax.servlet.FilterRegistration;
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58 import javax.servlet.FilterRegistration.Dynamic;
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59 import javax.servlet.descriptor.JspConfigDescriptor;
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60 import javax.servlet.http.HttpServletRequest;
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61 import javax.servlet.http.HttpServletResponse;
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62
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63 import org.eclipse.jetty.http.HttpException;
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64 import org.eclipse.jetty.http.MimeTypes;
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65 import org.eclipse.jetty.io.Buffer;
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66 import org.eclipse.jetty.server.AbstractHttpConnection;
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67 import org.eclipse.jetty.server.Handler;
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68 import org.eclipse.jetty.server.HandlerContainer;
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69 import org.eclipse.jetty.server.Request;
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70 import org.eclipse.jetty.server.Server;
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71 import org.eclipse.jetty.util.AttributesMap;
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72 import org.eclipse.jetty.util.StringUtil;
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73 import org.eclipse.jetty.util.TypeUtil;
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74 import org.eclipse.jetty.util.URIUtil;
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75 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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76 import org.eclipse.jetty.util.component.Dumpable;
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77 import org.slf4j.Logger;
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78 import org.slf4j.LoggerFactory;
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79 import org.eclipse.jetty.util.resource.Resource;
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80
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81 /* ------------------------------------------------------------ */
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82 /**
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83 * ContextHandler.
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84 *
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85 * This handler wraps a call to handle by setting the context and servlet path.
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86 *
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87 */
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88 public final class ContextHandler extends HandlerWrapper implements Server.Graceful
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89 {
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90 private static final Logger LOG = LoggerFactory.getLogger(ContextHandler.class);
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91
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92 private String _contextPath = "/";
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93 private Resource _baseResource;
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94 private Logger _logger;
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95
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96 private boolean _shutdown = false;
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97 private volatile int _availability; // 0=STOPPED, 1=AVAILABLE, 2=SHUTDOWN, 3=UNAVAILABLE
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98
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99 private final static int __STOPPED = 0, __AVAILABLE = 1, __SHUTDOWN = 2;
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100
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101 public ContextHandler()
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102 {
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103 super();
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104 }
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105
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106 public ContextHandler(String contextPath)
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107 {
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108 this();
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109 setContextPath(contextPath);
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110 }
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111
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112 public ContextHandler(HandlerContainer parent, String contextPath)
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113 {
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114 this();
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115 setContextPath(contextPath);
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116 if (parent instanceof HandlerWrapper)
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117 ((HandlerWrapper)parent).setHandler(this);
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118 else if (parent instanceof HandlerCollection)
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119 ((HandlerCollection)parent).addHandler(this);
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120 }
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121
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122 @Override
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123 public void dump(Appendable out, String indent) throws IOException
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124 {
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125 dumpThis(out);
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126 dump(out,indent,TypeUtil.asList(getHandlers()),getBeans());
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127 }
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128
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129 public String getContextPath()
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130 {
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131 return _contextPath;
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132 }
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133
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134 /* ------------------------------------------------------------ */
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135 /**
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136 * Set shutdown status. This field allows for graceful shutdown of a context. A started context may be put into non accepting state so that existing
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137 * requests can complete, but no new requests are accepted.
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138 *
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139 * @param shutdown
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140 * true if this context is (not?) accepting new requests
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141 */
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142 public void setShutdown(boolean shutdown)
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143 {
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144 synchronized (this)
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145 {
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146 _shutdown = shutdown;
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147 _availability = isRunning()?(_shutdown?__SHUTDOWN:__AVAILABLE):__STOPPED;
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148 }
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149 }
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150
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151 /* ------------------------------------------------------------ */
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152 /*
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153 * @see org.eclipse.thread.AbstractLifeCycle#doStart()
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154 */
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155 @Override
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156 protected void doStart() throws Exception
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157 {
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158 _availability = __STOPPED;
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159
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160 if (_contextPath == null)
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161 throw new IllegalStateException("Null contextPath");
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162
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163 _logger = LoggerFactory.getLogger(getContextPath());
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164
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165 super.doStart();
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166
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167 synchronized(this)
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168 {
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169 _availability = _shutdown?__SHUTDOWN:__AVAILABLE;
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170 }
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171 }
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172
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173 /* ------------------------------------------------------------ */
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174 /*
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175 * @see org.eclipse.thread.AbstractLifeCycle#doStop()
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176 */
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177 @Override
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178 protected void doStop() throws Exception
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179 {
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180 _availability = __STOPPED;
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181
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182 super.doStop();
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183 LOG.info("stopped {}",this);
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184 }
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185
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186 private boolean checkContext(final String target, final Request baseRequest, final HttpServletResponse response) throws IOException, ServletException
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187 {
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188 switch (_availability)
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189 {
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190 case __STOPPED:
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191 case __SHUTDOWN:
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192 return false;
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193 default:
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194 if (baseRequest.isHandled())
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195 return false;
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196 }
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197
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198 // Are we not the root context?
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199 if (_contextPath.length() > 1)
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200 {
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201 // reject requests that are not for us
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202 if (!target.startsWith(_contextPath))
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203 return false;
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204 if (target.length() > _contextPath.length() && target.charAt(_contextPath.length()) != '/')
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205 return false;
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206
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207 // redirect null path infos
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208 if (_contextPath.length() == target.length())
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209 {
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210 // context request must end with /
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211 baseRequest.setHandled(true);
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212 if (baseRequest.getQueryString() != null)
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213 response.sendRedirect(URIUtil.addPaths(baseRequest.getRequestURI(),URIUtil.SLASH) + "?" + baseRequest.getQueryString());
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214 else
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215 response.sendRedirect(URIUtil.addPaths(baseRequest.getRequestURI(),URIUtil.SLASH));
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216 return false;
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217 }
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218 }
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219
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220 return true;
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221 }
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222
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223 @Override
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224 public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
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225 {
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226 if (LOG.isDebugEnabled())
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227 LOG.debug("scope {}|{}|{} @ {}",baseRequest.getContextPath(),baseRequest.getServletPath(),baseRequest.getPathInfo(),this);
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228
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229 String old_context_path = null;
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230 String old_servlet_path = null;
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231 String old_path_info = null;
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232 String pathInfo = target;
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233
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234 ContextHandler oldContextHandler = baseRequest._contextHandler;
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235
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236 // Are we already in this context?
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237 if (oldContextHandler != this)
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238 {
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239 if (!checkContext(target,baseRequest,response))
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240 return;
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241
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242 if (target.length() > _contextPath.length())
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243 {
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244 if (_contextPath.length() > 1)
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245 target = target.substring(_contextPath.length());
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246 pathInfo = target;
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247 }
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248 else if (_contextPath.length() == 1)
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249 {
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250 target = URIUtil.SLASH;
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251 pathInfo = URIUtil.SLASH;
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252 }
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253 else
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254 {
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255 target = URIUtil.SLASH;
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256 pathInfo = null;
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257 }
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258 }
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259
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260 try
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261 {
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262 old_context_path = baseRequest.getContextPath();
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263 old_servlet_path = baseRequest.getServletPath();
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264 old_path_info = baseRequest.getPathInfo();
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265
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266 // Update the paths
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267 baseRequest._contextHandler = this;
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268 if (target.startsWith("/"))
802
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269 {
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270 if (_contextPath.length() == 1)
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271 baseRequest.setContextPath("");
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272 else
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273 baseRequest.setContextPath(_contextPath);
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274 baseRequest.setServletPath(null);
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275 baseRequest.setPathInfo(pathInfo);
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276 }
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277
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278 if (LOG.isDebugEnabled())
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279 LOG.debug("context={}|{}|{} @ {}",baseRequest.getContextPath(),baseRequest.getServletPath(), baseRequest.getPathInfo(),this);
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280
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281 try
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282 {
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283 super.handle(target,baseRequest,request,response);
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284 }
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285 catch (HttpException e)
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286 {
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287 LOG.debug("",e);
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288 baseRequest.setHandled(true);
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289 response.sendError(e.getStatus(),e.getReason());
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290 }
802
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291 }
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292 finally
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293 {
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294 if (oldContextHandler != this)
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295 {
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296 // reset the context and servlet path.
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297 baseRequest._contextHandler = oldContextHandler;
802
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298 baseRequest.setContextPath(old_context_path);
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299 baseRequest.setServletPath(old_servlet_path);
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300 baseRequest.setPathInfo(old_path_info);
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301 }
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302 }
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303 }
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304
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305 public void setContextPath(String contextPath)
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306 {
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307 if (contextPath != null && contextPath.length() > 1 && contextPath.endsWith("/"))
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308 throw new IllegalArgumentException("ends with /");
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309 _contextPath = contextPath;
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310 }
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311
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312 public Resource getBaseResource()
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313 {
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314 return _baseResource;
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315 }
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316
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317 public String getResourceBase()
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318 {
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319 if (_baseResource == null)
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320 return null;
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321 return _baseResource.toString();
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322 }
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323
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324 public void setBaseResource(Resource base)
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325 {
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326 _baseResource = base;
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327 }
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328
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329 public void setResourceBase(String resourceBase)
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330 {
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331 try
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332 {
991
688c39c50ee3 simplify ContextHandler
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333 setBaseResource(Resource.newResource(resourceBase));
802
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334 }
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335 catch (Exception e)
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336 {
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337 LOG.warn(e.toString());
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8e9db0bbf4f9 remove org.eclipse.jetty.util.log and upgrade slf4j
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338 LOG.debug("",e);
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339 throw new IllegalArgumentException(resourceBase);
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340 }
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341 }
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342
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343 @Override
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344 public String toString()
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345 {
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346 StringBuilder b = new StringBuilder();
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347
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348 Package pkg = getClass().getPackage();
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349 if (pkg != null)
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350 {
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351 String p = pkg.getName();
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352 if (p != null && p.length() > 0)
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353 {
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354 String[] ss = p.split("\\.");
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355 for (String s : ss)
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356 b.append(s.charAt(0)).append('.');
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357 }
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358 }
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359 b.append(getClass().getSimpleName());
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360 b.append('{').append(getContextPath()).append(',').append(getBaseResource());
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361
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362 b.append('}');
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363
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364 return b.toString();
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365 }
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366
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367 public Resource getResource(String path) throws MalformedURLException
3428c60d7cfc replace jetty jars with source
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368 {
3428c60d7cfc replace jetty jars with source
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369 if (path == null || !path.startsWith(URIUtil.SLASH))
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370 throw new MalformedURLException(path);
3428c60d7cfc replace jetty jars with source
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371
3428c60d7cfc replace jetty jars with source
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372 if (_baseResource == null)
3428c60d7cfc replace jetty jars with source
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373 return null;
3428c60d7cfc replace jetty jars with source
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374
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
375 try
3428c60d7cfc replace jetty jars with source
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diff changeset
376 {
3428c60d7cfc replace jetty jars with source
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diff changeset
377 path = URIUtil.canonicalPath(path);
3428c60d7cfc replace jetty jars with source
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diff changeset
378 Resource resource = _baseResource.addPath(path);
3428c60d7cfc replace jetty jars with source
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parents:
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379
991
688c39c50ee3 simplify ContextHandler
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diff changeset
380 if (resource.getAlias() == null) // check not alias
802
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parents:
diff changeset
381 return resource;
3428c60d7cfc replace jetty jars with source
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382 return null;
3428c60d7cfc replace jetty jars with source
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diff changeset
383 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
384 catch (Exception e)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
385 {
820
8e9db0bbf4f9 remove org.eclipse.jetty.util.log and upgrade slf4j
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
386 LOG.trace("",e);
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
387 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
388
3428c60d7cfc replace jetty jars with source
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parents:
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389 return null;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
390 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
391
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
392 public Set<String> getResourcePaths(String path)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
393 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
394 try
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
395 {
3428c60d7cfc replace jetty jars with source
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diff changeset
396 path = URIUtil.canonicalPath(path);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
397 Resource resource = getResource(path);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
398
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
399 if (resource != null && resource.exists())
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
400 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
401 if (!path.endsWith(URIUtil.SLASH))
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
402 path = path + URIUtil.SLASH;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
403
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
404 String[] l = resource.list();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
405 if (l != null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
406 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
407 HashSet<String> set = new HashSet<String>();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
408 for (int i = 0; i < l.length; i++)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
409 set.add(path + l[i]);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
410 return set;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
411 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
412 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
413 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
414 catch (Exception e)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
415 {
820
8e9db0bbf4f9 remove org.eclipse.jetty.util.log and upgrade slf4j
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
416 LOG.trace("",e);
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
417 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
418 return Collections.emptySet();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
419 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
420 }