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/*
* The MIT License
*
* Copyright (c) 2009-2023 PrimeTek Informatics
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.clientwindow;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.lifecycle.ClientWindow;
import javax.faces.render.ResponseStateManager;
import javax.servlet.http.HttpServletResponse;
import org.primefaces.util.LangUtils;
public class PrimeClientWindow extends ClientWindow {
private String id;
@Override
public Map getQueryURLParameters(FacesContext context) {
return Collections.emptyMap();
}
@Override
public String getId() {
return id;
}
@Override
public void decode(FacesContext context) {
id = context.getExternalContext().getRequestParameterMap().get(ResponseStateManager.CLIENT_WINDOW_URL_PARAM);
boolean post = PrimeClientWindowUtils.isPost(context);
if (LangUtils.isBlank(id) && post) {
id = context.getExternalContext().getRequestParameterMap().get(ResponseStateManager.CLIENT_WINDOW_PARAM);
}
if (LangUtils.isNotBlank(id)) {
id = PrimeClientWindowUtils.secureWindowId(id);
}
if (LangUtils.isBlank(id)) {
id = PrimeClientWindowUtils.generateNewWindowId();
if (!post) {
try {
// this will also include the new generated windowId
String redirectUrl = constructInitialRedirectUrl(context);
// remember the initial redirect windowId till the next request - see DeltaSpike #729
PrimeClientWindowUtils.addInitialRedirectCookie(context, id);
context.getExternalContext().redirect(redirectUrl);
}
catch (IOException e) {
throw new FacesException("Could not send initial redirect!", e);
}
context.responseComplete();
}
}
}
/**
* Constructs the URL for the initialRedirect, which equals the current requested URL + the window id candidate.
* We cant use
* {@link javax.faces.application.ViewHandler#getBookmarkableURL(javax.faces.context.FacesContext, java.lang.String, java.util.Map, boolean)}
* as the ViewRoot isn't available yet in the {@link FacesContext}.
* Same applies for {@link ExternalContext#encodeRedirectURL(java.lang.String, java.util.Map)}.
*
* @param context The {@link FacesContext}.
* @return The initial-redirect URL.
*/
protected String constructInitialRedirectUrl(FacesContext context) {
ExternalContext externalContext = context.getExternalContext();
String url = externalContext.getRequestContextPath() + externalContext.getRequestServletPath();
if (externalContext.getRequestPathInfo() != null) {
url += externalContext.getRequestPathInfo();
}
Map> parameters = new HashMap<>();
for (Map.Entry entry : externalContext.getRequestParameterValuesMap().entrySet()) {
List values = parameters.computeIfAbsent(entry.getKey(), k -> new ArrayList<>(1));
if (entry.getValue() != null) {
values.addAll(Arrays.asList(entry.getValue()));
}
}
parameters.put(ResponseStateManager.CLIENT_WINDOW_URL_PARAM, Arrays.asList(id));
url = appendParameters(externalContext, url, parameters);
// use servlet if available to avoid resource push
if (externalContext.getResponse() instanceof HttpServletResponse) {
url = ((HttpServletResponse) externalContext.getResponse()).encodeURL(url);
}
else {
//only #encodeResourceURL is portable currently, maybe Portlet doesnt implement resource push
url = externalContext.encodeResourceURL(url);
}
return url;
}
protected String appendParameters(ExternalContext externalContext, String url, Map> parameters) {
StringBuilder urlBuilder = new StringBuilder(url);
boolean existingParameters = url.contains("?");
for (Map.Entry> entry : parameters.entrySet()) {
String name = entry.getKey();
for (String value : entry.getValue()) {
if (LangUtils.isEmpty(name) && LangUtils.isEmpty(value)) {
continue;
}
if (url.contains(name + "=" + value)
|| url.contains(name + "=" + encodeURLParameterValue(value, externalContext))) {
continue;
}
if (!existingParameters) {
urlBuilder.append("?");
existingParameters = true;
}
else {
urlBuilder.append("&");
}
urlBuilder.append(encodeURLParameterValue(name, externalContext))
.append("=")
.append(encodeURLParameterValue(value, externalContext));
}
}
return urlBuilder.toString();
}
/**
* Encodes the given value using URLEncoder.encode() with the charset returned
* from ExternalContext.getResponseCharacterEncoding().
* This is exactly how the ExternalContext impl encodes URL parameter values.
*
* @param value value which should be encoded
* @param externalContext current external-context
* @return encoded value
*/
protected String encodeURLParameterValue(String value, ExternalContext externalContext) {
try {
return URLEncoder.encode(value, externalContext.getResponseCharacterEncoding());
}
catch (UnsupportedEncodingException e) {
throw new UnsupportedOperationException("Encoding type="
+ externalContext.getResponseCharacterEncoding() + " not supported", e);
}
}
}
