/*
* Sone - PageToadlet.java - Copyright © 2010–2013 David Roden
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.pterodactylus.sone.web.page;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import net.pterodactylus.util.web.Header;
import net.pterodactylus.util.web.Method;
import net.pterodactylus.util.web.Page;
import net.pterodactylus.util.web.Response;
import freenet.client.HighLevelSimpleClient;
import freenet.clients.http.LinkEnabledCallback;
import freenet.clients.http.LinkFilterExceptedToadlet;
import freenet.clients.http.Toadlet;
import freenet.clients.http.ToadletContext;
import freenet.clients.http.ToadletContextClosedException;
import freenet.support.MultiValueTable;
import freenet.support.api.Bucket;
import freenet.support.api.HTTPRequest;
import freenet.support.io.Closer;
/**
* {@link Toadlet} implementation that is wrapped around a {@link Page}.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class PageToadlet extends Toadlet implements LinkEnabledCallback, LinkFilterExceptedToadlet {
/** The name of the menu item. */
private final String menuName;
/** The page that handles processing. */
private final Page<FreenetRequest> page;
/** The path prefix for the page. */
private final String pathPrefix;
/**
* Creates a new toadlet that hands off processing to a {@link Page}.
*
* @param highLevelSimpleClient
* The high-level simple client
* @param menuName
* The name of the menu item
* @param page
* The page to handle processing
* @param pathPrefix
* Prefix that is prepended to all {@link Page#getPath()} return
* values
*/
protected PageToadlet(HighLevelSimpleClient highLevelSimpleClient, String menuName, Page<FreenetRequest> page, String pathPrefix) {
super(highLevelSimpleClient);
this.menuName = menuName;
this.page = page;
this.pathPrefix = pathPrefix;
}
/**
* Returns the name to display in the menu.
*
* @return The name in the menu
*/
public String getMenuName() {
return menuName;
}
/**
* {@inheritDoc}
*/
@Override
public String path() {
return pathPrefix + page.getPath();
}
/**
* Handles a HTTP GET request.
*
* @param uri
* The URI of the request
* @param httpRequest
* The HTTP request
* @param toadletContext
* The toadlet context
* @throws IOException
* if an I/O error occurs
* @throws ToadletContextClosedException
* if the toadlet context is closed
*/
public void handleMethodGET(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
handleRequest(new FreenetRequest(uri, Method.GET, httpRequest, toadletContext));
}
/**
* Handles a HTTP POST request.
*
* @param uri
* The URI of the request
* @param httpRequest
* The HTTP request
* @param toadletContext
* The toadlet context
* @throws IOException
* if an I/O error occurs
* @throws ToadletContextClosedException
* if the toadlet context is closed
*/
public void handleMethodPOST(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
handleRequest(new FreenetRequest(uri, Method.POST, httpRequest, toadletContext));
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return getClass().getName() + "[path=" + path() + ",page=" + page + "]";
}
/**
* Handles a HTTP request.
*
* @param pageRequest
* The request to handle
* @throws IOException
* if an I/O error occurs
* @throws ToadletContextClosedException
* if the toadlet context is closed
*/
private void handleRequest(FreenetRequest pageRequest) throws IOException, ToadletContextClosedException {
Bucket pageBucket = null;
OutputStream pageBucketOutputStream = null;
Response pageResponse;
try {
pageBucket = pageRequest.getToadletContext().getBucketFactory().makeBucket(-1);
pageBucketOutputStream = pageBucket.getOutputStream();
pageResponse = page.handleRequest(pageRequest, new Response(pageBucketOutputStream));
} catch (IOException ioe1) {
Closer.close(pageBucket);
throw ioe1;
} finally {
Closer.close(pageBucketOutputStream);
}
MultiValueTable<String, String> headers = new MultiValueTable<String, String>();
if (pageResponse.getHeaders() != null) {
for (Header header : pageResponse.getHeaders()) {
for (String value : header) {
headers.put(header.getName(), value);
}
}
}
try {
writeReply(pageRequest.getToadletContext(), pageResponse.getStatusCode(), pageResponse.getContentType(), pageResponse.getStatusText(), headers, pageBucket);
} finally {
Closer.close(pageBucket);
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean isEnabled(ToadletContext toadletContext) {
if (page instanceof LinkEnabledCallback) {
return ((LinkEnabledCallback) page).isEnabled(toadletContext);
}
return true;
}
//
// LINKFILTEREXCEPTEDTOADLET METHODS
//
/**
* {@inheritDoc}
*/
@Override
public boolean isLinkExcepted(URI link) {
return (page instanceof FreenetPage) ? ((FreenetPage) page).isLinkExcepted(link) : false;
}
}