001: /*
002: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/ssi/SSIServletRequestUtil.java,v 1.1 2002/05/24 04:38:58 billbarker Exp $
003: * $Revision: 1.1 $
004: * $Date: 2002/05/24 04:38:58 $
005: *
006: * ====================================================================
007: *
008: * The Apache Software License, Version 1.1
009: *
010: * Copyright (c) 1999 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: package org.apache.catalina.ssi;
064:
065: import javax.servlet.http.HttpServletRequest;
066: import org.apache.catalina.util.RequestUtil;
067:
068: public class SSIServletRequestUtil {
069: /**
070: * Return the relative path associated with this servlet.
071: *
072: * Taken from DefaultServlet.java. Perhaps this should be put in
073: * org.apache.catalina.util somewhere? Seems like it would be widely used.
074: *
075: * @param request The servlet request we are processing
076: */
077: public static String getRelativePath(HttpServletRequest request) {
078:
079: // Are we being processed by a RequestDispatcher.include()?
080: if (request.getAttribute("javax.servlet.include.request_uri") != null) {
081: String result = (String) request
082: .getAttribute("javax.servlet.include.path_info");
083: if (result == null)
084: result = (String) request
085: .getAttribute("javax.servlet.include.servlet_path");
086: if ((result == null) || (result.equals("")))
087: result = "/";
088: return (result);
089: }
090:
091: // No, extract the desired path directly from the request
092: String result = request.getPathInfo();
093: if (result == null) {
094: result = request.getServletPath();
095: }
096: if ((result == null) || (result.equals(""))) {
097: result = "/";
098: }
099: return normalize(result);
100: }
101:
102: /**
103: * Return a context-relative path, beginning with a "/", that represents
104: * the canonical version of the specified path after ".." and "." elements
105: * are resolved out. If the specified path attempts to go outside the
106: * boundaries of the current context (i.e. too many ".." path elements
107: * are present), return <code>null</code> instead.
108: *
109: * This normalize should be the same as DefaultServlet.normalize, which is almost the same
110: * ( see source code below ) as RequestUtil.normalize. Do we need all this duplication?
111: *
112: * @param path Path to be normalized
113: */
114: public static String normalize(String path) {
115: if (path == null)
116: return null;
117:
118: String normalized = path;
119:
120: //Why doesn't RequestUtil do this??
121:
122: // Normalize the slashes and add leading slash if necessary
123: if (normalized.indexOf('\\') >= 0)
124: normalized = normalized.replace('\\', '/');
125:
126: normalized = RequestUtil.normalize(path);
127: return normalized;
128: }
129: }
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