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WebRequestContext.java
Package: jforum-2.1.8-src.zip [view]
Upload User: gdxydsw
Upload Date: 2019-01-29
Package Size: 16721k
Code Size: 14k
Category:
Java Develop
Development Platform:
Java
- /*
- * Copyright (c) JForum Team
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms,
- * with or without modification, are permitted provided
- * that the following conditions are met:
- *
- * 1) Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the
- * following disclaimer.
- * 2) Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions and
- * the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * 3) Neither the name of "Rafael Steil" nor
- * the names of its contributors may be used to endorse
- * or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
- * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
- *
- * This file creation date: Mar 16, 2003 / 1:31:30 AM
- * The JForum Project
- * http://www.jforum.net
- */
- package net.jforum.context.web;
- import java.io.File;
- import java.io.IOException;
- import java.io.UnsupportedEncodingException;
- import java.util.ArrayList;
- import java.util.Enumeration;
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Map;
- import java.util.StringTokenizer;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletRequestWrapper;
- import net.jforum.UrlPattern;
- import net.jforum.UrlPatternCollection;
- import net.jforum.context.RequestContext;
- import net.jforum.context.SessionContext;
- import net.jforum.exceptions.MultipartHandlingException;
- import net.jforum.util.legacy.commons.fileupload.FileItem;
- import net.jforum.util.legacy.commons.fileupload.FileUploadException;
- import net.jforum.util.legacy.commons.fileupload.disk.DiskFileItemFactory;
- import net.jforum.util.legacy.commons.fileupload.servlet.ServletFileUpload;
- import net.jforum.util.legacy.commons.fileupload.servlet.ServletRequestContext;
- import net.jforum.util.preferences.ConfigKeys;
- import net.jforum.util.preferences.SystemGlobals;
- import org.apache.commons.lang.StringUtils;
- /**
- * @author Rafael Steil
- * @version $Id: WebRequestContext.java,v 1.14 2007/09/25 23:38:48 rafaelsteil Exp $
- */
- public class WebRequestContext extends HttpServletRequestWrapper implements RequestContext
- {
- private Map query;
- /**
- * Default constructor.
- *
- * @param superRequest Original <code>HttpServletRequest</code> instance
- * @throws IOException
- */
- public WebRequestContext(HttpServletRequest superRequest) throws IOException
- {
- super(superRequest);
- this.query = new HashMap();
- boolean isMultipart = false;
- String requestType = superRequest.getMethod().toUpperCase();
- String contextPath = superRequest.getContextPath();
- String requestUri = this.extractRequestUri(superRequest.getRequestURI(), contextPath);
- String encoding = SystemGlobals.getValue(ConfigKeys.ENCODING);
- String servletExtension = SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION);
- boolean isPost = "POST".equals(requestType);
- boolean isGet = !isPost;
- boolean isQueryStringEmpty = (superRequest.getQueryString() == null
- || superRequest.getQueryString().length() == 0);
- if (isGet && isQueryStringEmpty && requestUri.endsWith(servletExtension)) {
- superRequest.setCharacterEncoding(encoding);
- this.parseFriendlyURL(requestUri, servletExtension);
- }
- else if (isPost) {
- isMultipart = ServletFileUpload.isMultipartContent(new ServletRequestContext(superRequest));
- if (isMultipart) {
- this.handleMultipart(superRequest, encoding);
- }
- }
- if (!isMultipart) {
- boolean isAjax = "XMLHttpRequest".equals(superRequest.getHeader("X-Requested-With"));
- if (!isAjax) {
- superRequest.setCharacterEncoding(encoding);
- }
- else {
- // Ajax requests are *usually* sent using application/x-www-form-urlencoded; charset=UTF-8.
- // In JForum, we assume this as always true.
- superRequest.setCharacterEncoding("UTF-8");
- }
- String containerEncoding = SystemGlobals.getValue(ConfigKeys.DEFAULT_CONTAINER_ENCODING);
- if (isPost) {
- containerEncoding = encoding;
- }
- for (Enumeration e = superRequest.getParameterNames(); e.hasMoreElements(); ) {
- String name = (String)e.nextElement();
- String[] values = superRequest.getParameterValues(name);
- if (values != null && values.length > 1) {
- for (int i = 0; i < values.length; i++) {
- this.addParameter(name, new String(values[i].getBytes(containerEncoding), encoding));
- }
- }
- else {
- this.addParameter(name, new String(superRequest.getParameter(name).getBytes(containerEncoding), encoding));
- }
- }
- if (this.getModule() == null && this.getAction() == null) {
- int index = requestUri.indexOf('?');
- if (index > -1) {
- requestUri = requestUri.substring(0, index);
- }
- this.parseFriendlyURL(requestUri, servletExtension);
- }
- }
- }
- /**
- * @param requestUri
- * @param servletExtension
- */
- private void parseFriendlyURL(String requestUri, String servletExtension)
- {
- requestUri = requestUri.substring(0, requestUri.length() - servletExtension.length());
- String[] urlModel = requestUri.split("/");
- int moduleIndex = 1;
- int actionIndex = 2;
- int baseLen = 3;
- UrlPattern url = null;
- if (urlModel.length >= baseLen) {
- // <moduleName>.<actionName>.<numberOfParameters>
- StringBuffer sb = new StringBuffer(64)
- .append(urlModel[moduleIndex])
- .append('.')
- .append(urlModel[actionIndex])
- .append('.')
- .append(urlModel.length - baseLen);
- url = UrlPatternCollection.findPattern(sb.toString());
- }
- if (url != null) {
- if (url.getSize() >= urlModel.length - baseLen) {
- for (int i = 0; i < url.getSize(); i++) {
- this.addParameter(url.getVars()[i], urlModel[i + baseLen]);
- }
- }
- this.addParameter("module", urlModel[moduleIndex]);
- this.addParameter("action", urlModel[actionIndex]);
- }
- else {
- this.addParameter("module", null);
- this.addParameter("action", null);
- }
- }
- public SessionContext getSessionContext(boolean create) {
- return new WebSessionContext(this.getSession(true));
- }
- public SessionContext getSessionContext() {
- return new WebSessionContext(this.getSession());
- }
- /**
- * @param superRequest HttpServletRequest
- * @param encoding String
- * @throws UnsupportedEncodingException
- */
- private void handleMultipart(HttpServletRequest superRequest, String encoding) throws UnsupportedEncodingException
- {
- String tmpPath = new StringBuffer(256)
- .append(SystemGlobals.getApplicationPath())
- .append('/')
- .append(SystemGlobals.getValue(ConfigKeys.TMP_DIR))
- .toString();
- File tmpDir = new File(tmpPath);
- boolean success = false;
- try {
- if (!tmpDir.exists()) {
- tmpDir.mkdirs();
- success = true;
- }
- }
- catch (Exception e) {
- // We won't log it because the directory
- // creation failed for some reason - a SecurityException
- // or something else. We don't care about it, as the
- // code below tries to use java.io.tmpdir
- }
- if (!success) {
- tmpPath = System.getProperty("java.io.tmpdir");
- tmpDir = new File(tmpPath);
- }
- ServletFileUpload upload = new ServletFileUpload(new DiskFileItemFactory(100 * 1024, tmpDir));
- upload.setHeaderEncoding(encoding);
- try {
- List items = upload.parseRequest(superRequest);
- for (Iterator iter = items.iterator(); iter.hasNext(); ) {
- FileItem item = (FileItem)iter.next();
- if (item.isFormField()) {
- this.addParameter(item.getFieldName(), item.getString(encoding));
- }
- else {
- if (item.getSize() > 0) {
- // We really don't want to call addParameter(), as
- // there should not be possible to have multiple
- // values for a InputStream data
- this.query.put(item.getFieldName(), item);
- }
- }
- }
- }
- catch (FileUploadException e) {
- throw new MultipartHandlingException("Error while processing multipart content: " + e);
- }
- }
- /**
- * @see javax.servlet.ServletRequestWrapper#getParameterValues(java.lang.String)
- */
- public String[] getParameterValues(String name)
- {
- Object value = this.getObjectParameter(name);
- if (value instanceof String) {
- return new String[] { (String)value };
- }
- List l = (List)value;
- return l == null
- ? super.getParameterValues(name)
- : (String[])l.toArray(new String[0]);
- }
- private String extractRequestUri(String requestUri, String contextPath)
- {
- // First, remove the context path from the requestUri,
- // so we can work only with the important stuff
- if (contextPath != null && contextPath.length() > 0) {
- requestUri = requestUri.substring(contextPath.length(), requestUri.length());
- }
- // Remove the "jsessionid" (or similar) from the URI
- // Probably this is not the right way to go, since we're
- // discarding the value...
- int index = requestUri.indexOf(';');
- if (index > -1) {
- int lastIndex = requestUri.indexOf('?', index);
- if (lastIndex == -1) {
- lastIndex = requestUri.indexOf('&', index);
- }
- if (lastIndex == -1) {
- requestUri = requestUri.substring(0, index);
- }
- else {
- String part1 = requestUri.substring(0, index);
- requestUri = part1 + requestUri.substring(lastIndex);
- }
- }
- return requestUri;
- }
- /**
- * @see javax.servlet.ServletRequest#getParameter(java.lang.String)
- */
- public String getParameter(String parameter)
- {
- return (String)this.query.get(parameter);
- }
- /**
- * Gets an parameter that is a number.
- * A call to <code>Integer#parseInt(String)</code> is made
- * to do the conversion
- * @param parameter The parameter name to get the value
- * @return int
- */
- public int getIntParameter(String parameter)
- {
- return Integer.parseInt(this.getParameter(parameter));
- }
- /**
- * Gets some request parameter as <code>Object</code>.
- * This method may be used when you have to get some value
- * of a <i>multipart/form-data</i> request, like a image
- * of file. <br>
- *
- * @param parameter String
- * @return Object
- */
- public Object getObjectParameter(String parameter)
- {
- return this.query.get(parameter);
- }
- public void addParameter(String name, Object value)
- {
- if (!this.query.containsKey(name)) {
- this.query.put(name, value);
- }
- else {
- Object currentValue = this.getObjectParameter(name);
- List l;
- if (!(currentValue instanceof List)) {
- l = new ArrayList();
- l.add(currentValue);
- }
- else {
- l = (List)currentValue;
- }
- l.add(value);
- this.query.put(name, l);
- }
- }
- public void addOrReplaceParameter(String name, Object value)
- {
- this.query.put(name, value);
- }
- /**
- * Gets the <i>action</i> of the current request.
- *
- * An <i>Action</i> is the parameter name which specifies
- * what next action should be done by the system. It may be
- * add or edit a post, editing the groups, whatever. In the URL, the
- * Action can the represented in two forms:
- * <p>
- * <blockquote>
- * <code>
- * http://www.host.com/webapp/servletName?module=groups&action=list
- * </code>
- * </blockquote>
- * <p>
- * or
- * <p>
- * <blockquote>
- * <code>
- * http://www.host.com/webapp/servletName/groups/list
- * </code>
- * </blockquote>
- * <p>
- * In both situations, the action's name is "list".
- *
- * @return String representing the action name
- */
- public String getAction()
- {
- return this.getParameter("action");
- }
- public void changeAction(String newAction)
- {
- if (this.query.containsKey("action")) {
- this.query.remove("action");
- this.query.put("action", newAction);
- }
- else {
- this.addParameter("action", newAction);
- }
- }
- /**
- * Gets the <i>module</i> of the current request.
- *
- * A <i>Module</i> is the parameter name which specifies
- * what module the user is requesting. It may be the group
- * administration, the topics or anything else configured module.
- *In the URL, the Module can the represented in two forms:
- * <p>
- * <blockquote>
- * <code>
- * http://www.host.com/webapp/servletName?module=groups&action=list
- * </code>
- * </blockquote>
- * <p>
- * or
- * <p>
- * <blockquote>
- * <code>
- * http://www.host.com/webapp/servletName/groups/list
- * </code>
- * </blockquote>
- * <p>
- * In both situations, the module's name is "groups".
- *
- * @return String representing the module name
- */
- public String getModule()
- {
- return this.getParameter("module");
- }
- public Object getObjectRequestParameter(String parameter)
- {
- return this.query.get(parameter);
- }
- /**
- * @see javax.servlet.http.HttpServletRequestWrapper#getContextPath()
- */
- public String getContextPath()
- {
- String contextPath = super.getContextPath();
- String proxiedContextPath = SystemGlobals.getValue(ConfigKeys.PROXIED_CONTEXT_PATH);
- if (!StringUtils.isEmpty(proxiedContextPath)) {
- contextPath = proxiedContextPath;
- }
- return contextPath;
- }
- /**
- * @see javax.servlet.ServletRequestWrapper#getRemoteAddr()
- */
- public String getRemoteAddr()
- {
- // We look if the request is forwarded
- // If it is not call the older function.
- String ip = super.getHeader("x-forwarded-for");
- if (ip == null) {
- ip = super.getRemoteAddr();
- }
- else {
- // Process the IP to keep the last IP (real ip of the computer on the net)
- StringTokenizer tokenizer = new StringTokenizer(ip, ",");
- // Ignore all tokens, except the last one
- for (int i = 0; i < tokenizer.countTokens() -1 ; i++) {
- tokenizer.nextElement();
- }
- ip = tokenizer.nextToken().trim();
- if (ip.equals("")) {
- ip = null;
- }
- }
- // If the ip is still null, we put 0.0.0.0 to avoid null values
- if (ip == null) {
- ip = "0.0.0.0";
- }
- return ip;
- }
- }