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• HttpUtils.java

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com.sun.enterprise.v3.services.impl.HttpUtils Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2007-2013 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:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.v3.services.impl;

import java.nio.ByteBuffer;

import org.glassfish.grizzly.http.util.Ascii;

/**
 * Utility class for parsing ByteBuffer
 * @author Jeanfrancois
 */
public class HttpUtils {

    
    private final static String CSS =
            "H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} " +
            "H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} " +
            "H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} " +
            "BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} " +
            "B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} " +
            "P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}" +
            "A {color : black;}" +
            "HR {color : #525D76;}";
 
    /**
     * Specialized utility method: find a sequence of lower case bytes inside
     * a {@link ByteBuffer}.
     */
    public static int findBytes(ByteBuffer byteBuffer, byte[] b) {
        int curPosition = byteBuffer.position();
        int curLimit = byteBuffer.limit();
      
        if (byteBuffer.position() == 0){
            throw new IllegalStateException("Invalid state");
        }
       
        byteBuffer.position(0);
        byteBuffer.limit(curPosition);
        try {                         
            byte first = b[0];
            int start = 0;
            int end = curPosition;

            // Look for first char 
            int srcEnd = b.length;

            for (int i = start; i <= (end - srcEnd); i++) {
                if (Ascii.toLower(byteBuffer.get(i)) != first) continue;
                // found first char, now look for a match
                int myPos = i+1;
                for (int srcPos = 1; srcPos < srcEnd; ) {
                        if (Ascii.toLower(byteBuffer.get(myPos++)) != b[srcPos++])
                    break;
                        if (srcPos == srcEnd) return i - start; // found it
                }
            }
            return -1;
        } finally {
            byteBuffer.limit(curLimit);
            byteBuffer.position(curPosition);                
        }
    }
    
    public static String getErrorPage(String serverName, String message, String errorCode) {
        StringBuilder sb = new StringBuilder();
        sb.append("");
        sb.append(" 
HTTP Status ");
        sb.append(errorCode).append(" - ");
        sb.append("
type Status report 
message 
description ");
        sb.append(message).append("
");
        sb.append(serverName).append("
");
        return sb.toString();
    }
    
}