Source Code Cross Referenced for StandardContextValve.java in  » Web-Server » Rimfaxe-Web-Server » org » apache » catalina » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Server » Rimfaxe Web Server » org.apache.catalina.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core/StandardContextValve.java,v 1.16 2002/03/14 20:58:24 remm Exp $
003:         * $Revision: 1.16 $
004:         * $Date: 2002/03/14 20:58:24 $
005:         *
006:         * ====================================================================
007:         *
008:         * The Apache Software License, Version 1.1
009:         *
010:         * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
011:         * reserved.
012:         *
013:         * Redistribution and use in source and binary forms, with or without
014:         * modification, are permitted provided that the following conditions
015:         * are met:
016:         *
017:         * 1. Redistributions of source code must retain the above copyright
018:         *    notice, this list of conditions and the following disclaimer.
019:         *
020:         * 2. Redistributions in binary form must reproduce the above copyright
021:         *    notice, this list of conditions and the following disclaimer in
022:         *    the documentation and/or other materials provided with the
023:         *    distribution.
024:         *
025:         * 3. The end-user documentation included with the redistribution, if
026:         *    any, must include the following acknowlegement:
027:         *       "This product includes software developed by the
028:         *        Apache Software Foundation (http://www.apache.org/)."
029:         *    Alternately, this acknowlegement may appear in the software itself,
030:         *    if and wherever such third-party acknowlegements normally appear.
031:         *
032:         * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
033:         *    Foundation" must not be used to endorse or promote products derived
034:         *    from this software without prior written permission. For written
035:         *    permission, please contact apache@apache.org.
036:         *
037:         * 5. Products derived from this software may not be called "Apache"
038:         *    nor may "Apache" appear in their names without prior written
039:         *    permission of the Apache Group.
040:         *
041:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
042:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
043:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
044:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
045:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
046:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
047:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
048:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
049:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
050:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
051:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
052:         * SUCH DAMAGE.
053:         * ====================================================================
054:         *
055:         * This software consists of voluntary contributions made by many
056:         * individuals on behalf of the Apache Software Foundation.  For more
057:         * information on the Apache Software Foundation, please see
058:         * <http://www.apache.org/>.
059:         *
060:         * [Additional notices, if required by prior licensing conditions]
061:         *
062:         */
063:
064:        package org.apache.catalina.core;
065:
066:        import java.io.IOException;
067:        import java.io.PrintWriter;
068:        import javax.servlet.ServletException;
069:        import javax.servlet.http.HttpServletRequest;
070:        import javax.servlet.http.HttpServletResponse;
071:        import javax.naming.NamingException;
072:        import org.apache.naming.ContextBindings;
073:        import org.apache.naming.resources.DirContextURLStreamHandler;
074:        import org.apache.catalina.Container;
075:        import org.apache.catalina.Context;
076:        import org.apache.catalina.HttpRequest;
077:        import org.apache.catalina.Request;
078:        import org.apache.catalina.Response;
079:        import org.apache.catalina.ValveContext;
080:        import org.apache.catalina.Wrapper;
081:        import org.apache.catalina.util.RequestUtil;
082:        import org.apache.catalina.util.StringManager;
083:        import org.apache.catalina.valves.ValveBase;
084:
085:        /**
086:         * Valve that implements the default basic behavior for the
087:         * <code>StandardContext</code> container implementation.
088:         * <p>
089:         * <b>USAGE CONSTRAINT</b>:  This implementation is likely to be useful only
090:         * when processing HTTP requests.
091:         *
092:         * @author Craig R. McClanahan
093:         * @version $Revision: 1.16 $ $Date: 2002/03/14 20:58:24 $
094:         */
095:
096:        final class StandardContextValve extends ValveBase {
097:
098:            // ----------------------------------------------------- Instance Variables
099:
100:            /**
101:             * The descriptive information related to this implementation.
102:             */
103:            private static final String info = "org.apache.catalina.core.StandardContextValve/1.0";
104:
105:            /**
106:             * The string manager for this package.
107:             */
108:            private static final StringManager sm = StringManager
109:                    .getManager(Constants.Package);
110:
111:            // ------------------------------------------------------------- Properties
112:
113:            /**
114:             * Return descriptive information about this Valve implementation.
115:             */
116:            public String getInfo() {
117:
118:                return (info);
119:
120:            }
121:
122:            // --------------------------------------------------------- Public Methods
123:
124:            /**
125:             * Select the appropriate child Wrapper to process this request,
126:             * based on the specified request URI.  If no matching Wrapper can
127:             * be found, return an appropriate HTTP error.
128:             *
129:             * @param request Request to be processed
130:             * @param response Response to be produced
131:             * @param valveContext Valve context used to forward to the next Valve
132:             *
133:             * @exception IOException if an input/output error occurred
134:             * @exception ServletException if a servlet error occurred
135:             */
136:            public void invoke(Request request, Response response,
137:                    ValveContext valveContext) throws IOException,
138:                    ServletException {
139:
140:                // Validate the request and response object types
141:                if (!(request.getRequest() instanceof  HttpServletRequest)
142:                        || !(response.getResponse() instanceof  HttpServletResponse)) {
143:                    return; // NOTE - Not much else we can do generically
144:                }
145:
146:                // Disallow any direct access to resources under WEB-INF or META-INF
147:                HttpServletRequest hreq = (HttpServletRequest) request
148:                        .getRequest();
149:                String contextPath = hreq.getContextPath();
150:                String requestURI = ((HttpRequest) request)
151:                        .getDecodedRequestURI();
152:                String relativeURI = requestURI.substring(contextPath.length())
153:                        .toUpperCase();
154:                if (relativeURI.equals("/META-INF")
155:                        || relativeURI.equals("/WEB-INF")
156:                        || relativeURI.startsWith("/META-INF/")
157:                        || relativeURI.startsWith("/WEB-INF/")) {
158:                    notFound(requestURI, (HttpServletResponse) response
159:                            .getResponse());
160:                    return;
161:                }
162:
163:                Context context = (Context) getContainer();
164:
165:                // Select the Wrapper to be used for this Request
166:                Wrapper wrapper = null;
167:                try {
168:                    wrapper = (Wrapper) context.map(request, true);
169:                } catch (IllegalArgumentException e) {
170:                    badRequest(requestURI, (HttpServletResponse) response
171:                            .getResponse());
172:                    return;
173:                }
174:                if (wrapper == null) {
175:                    notFound(requestURI, (HttpServletResponse) response
176:                            .getResponse());
177:                    return;
178:                }
179:
180:                // Ask this Wrapper to process this Request
181:                response.setContext(context);
182:
183:                wrapper.invoke(request, response);
184:
185:            }
186:
187:            // -------------------------------------------------------- Private Methods
188:
189:            /**
190:             * Report a "bad request" error for the specified resource.  FIXME:  We
191:             * should really be using the error reporting settings for this web
192:             * application, but currently that code runs at the wrapper level rather
193:             * than the context level.
194:             *
195:             * @param requestURI The request URI for the requested resource
196:             * @param response The response we are creating
197:             */
198:            private void badRequest(String requestURI,
199:                    HttpServletResponse response) {
200:
201:                try {
202:                    response.sendError(HttpServletResponse.SC_BAD_REQUEST,
203:                            requestURI);
204:                } catch (IllegalStateException e) {
205:                    ;
206:                } catch (IOException e) {
207:                    ;
208:                }
209:
210:            }
211:
212:            /**
213:             * Report a "not found" error for the specified resource.  FIXME:  We
214:             * should really be using the error reporting settings for this web
215:             * application, but currently that code runs at the wrapper level rather
216:             * than the context level.
217:             *
218:             * @param requestURI The request URI for the requested resource
219:             * @param response The response we are creating
220:             */
221:            private void notFound(String requestURI,
222:                    HttpServletResponse response) {
223:
224:                try {
225:                    response.sendError(HttpServletResponse.SC_NOT_FOUND,
226:                            requestURI);
227:                } catch (IllegalStateException e) {
228:                    ;
229:                } catch (IOException e) {
230:                    ;
231:                }
232:
233:            }
234:
235:        }
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