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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013-2014 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
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*/
package com.sun.enterprise.v3.services.impl;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.http.Method;
import org.glassfish.grizzly.http.server.Request;
import org.glassfish.grizzly.http.server.Response;
import org.glassfish.grizzly.http.server.StaticHttpHandler;
import org.glassfish.grizzly.http.server.util.AlternateDocBase;
import org.glassfish.grizzly.http.util.Header;
import org.glassfish.grizzly.http.util.HttpStatus;
import static org.glassfish.grizzly.http.server.StaticHttpHandlerBase.sendFile;
/**
* {@link StaticHttpHandler}, which additionally can check registered
* {@link AlternateDocBase}s to serve requested resources.
*
* @author Alexey Stashok
*/
public class ADBAwareHttpHandler extends StaticHttpHandler {
private static final Logger LOGGER = Grizzly.logger(ADBAwareHttpHandler.class);
private final List alternateDocBases =
new ArrayList();
public ADBAwareHttpHandler() {
// make sure the default "." docRoot won't be added
super((Set) null);
}
/**
* Add {@link AlternateDocBase} to be checked for requested resources.
*
* @param urlPattern
* @param docBase absolute path
*/
public void addAlternateDocBase(final String urlPattern,
final String docBase) {
if (urlPattern == null) {
throw new IllegalArgumentException("The urlPattern argument can't be null");
} else if (docBase == null) {
throw new IllegalArgumentException("The docBase argument can't be null");
}
AlternateDocBase alternateDocBase = new AlternateDocBase();
alternateDocBase.setUrlPattern(urlPattern);
alternateDocBase.setDocBase(docBase);
alternateDocBase.setBasePath(getBasePath(docBase));
alternateDocBases.add(alternateDocBase);
}
/**
* {@inheritDoc}
*/
@Override
protected boolean handle(final String uri,
final Request request, final Response response) throws Exception {
final File file = lookupInADB(uri);
if (file != null) {
serveFile(file, request, response);
return true;
}
return super.handle(uri, request, response);
}
/**
* Get base path.
*/
private String getBasePath(final String docBase) {
return new File(docBase).getAbsolutePath();
}
private void serveFile(final File file, final Request request,
final Response response) throws IOException {
// If it's not HTTP GET - return method is not supported status
if (!Method.GET.equals(request.getMethod())) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "File found {0}, but HTTP method {1} is not allowed",
new Object[] {file, request.getMethod()});
}
response.setStatus(HttpStatus.METHOD_NOT_ALLOWED_405);
response.setHeader(Header.Allow, "GET");
return;
}
pickupContentType(response, file.getPath());
addToFileCache(request, response, file);
sendFile(response, file);
}
private File lookupInADB(final String uri) {
final AlternateDocBase adb = AlternateDocBase.findMatch(
uri, alternateDocBases);
if (adb != null) {
File file = new File(adb.getBasePath(), uri);
boolean exists = file.exists();
boolean isDirectory = file.isDirectory();
if (exists && isDirectory) {
file = new File(file, "/index.html");
exists = file.exists();
isDirectory = file.isDirectory();
}
if (exists && !isDirectory) {
return file;
}
}
return null;
}
}