+++ /dev/null
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-
-package org.apache.tomcat.lite.util;
-
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-
-/**
- * This class provides encode/decode for RFC 2045 Base64 as
- * defined by RFC 2045, N. Freed and N. Borenstein.
- * RFC 2045: Multipurpose Internet Mail Extensions (MIME)
- * Part One: Format of Internet Message Bodies. Reference
- * 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt
- * This class is used by XML Schema binary format validation
- *
- * @author Jeffrey Rodriguez
- * @version $Id$
- */
-
-public final class Base64 {
-
-
- private static Logger log=
- Logger.getLogger( Base64.class.getName() );
-
- static private final int BASELENGTH = 255;
- static private final int LOOKUPLENGTH = 63;
- static private final int TWENTYFOURBITGROUP = 24;
- static private final int EIGHTBIT = 8;
- static private final int SIXTEENBIT = 16;
- static private final int SIXBIT = 6;
- static private final int FOURBYTE = 4;
-
-
- static private final byte PAD = ( byte ) '=';
- static private byte [] base64Alphabet = new byte[BASELENGTH];
- static private byte [] lookUpBase64Alphabet = new byte[LOOKUPLENGTH + 1];
-
- static {
-
- for (int i = 0; i<BASELENGTH; i++ ) {
- base64Alphabet[i] = -1;
- }
- for ( int i = 'Z'; i >= 'A'; i-- ) {
- base64Alphabet[i] = (byte) (i-'A');
- }
- for ( int i = 'z'; i>= 'a'; i--) {
- base64Alphabet[i] = (byte) ( i-'a' + 26);
- }
-
- for ( int i = '9'; i >= '0'; i--) {
- base64Alphabet[i] = (byte) (i-'0' + 52);
- }
-
- base64Alphabet['+'] = 62;
- base64Alphabet['/'] = 63;
- String lookupString =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" +
- "0123456789+/";
-
- for (int i = 0; i < lookupString.length(); i++ ) {
- lookUpBase64Alphabet[i] = (byte) lookupString.charAt(i);
- }
- }
-
-
- static boolean isBase64( byte octect ) {
- //shall we ignore white space? JEFF??
- return(octect == PAD || base64Alphabet[octect] != -1 );
- }
-
-
- static boolean isArrayByteBase64( byte[] arrayOctect ) {
- int length = arrayOctect.length;
- if ( length == 0 )
- return false;
- for ( int i=0; i < length; i++ ) {
- if ( Base64.isBase64( arrayOctect[i] ) == false)
- return false;
- }
- return true;
- }
-
- /**
- * Encodes hex octects into Base64
- *
- * @param binaryData Array containing binaryData
- * @return Encoded Base64 array
- */
- public static byte[] encode( byte[] binaryData ) {
- int lengthDataBits = binaryData.length*EIGHTBIT;
- int fewerThan24bits = lengthDataBits%TWENTYFOURBITGROUP;
- int numberTriplets = lengthDataBits/TWENTYFOURBITGROUP;
- byte encodedData[] = null;
-
-
- if ( fewerThan24bits != 0 ) //data not divisible by 24 bit
- encodedData = new byte[ (numberTriplets + 1 )*4 ];
- else // 16 or 8 bit
- encodedData = new byte[ numberTriplets*4 ];
-
- int k=0, l=0, b1=0,b2=0,b3=0;
-
- int encodedIndex = 0;
- int dataIndex = 0;
- int i = 0;
- for ( i = 0; i<numberTriplets; i++ ) {
-
- dataIndex = i*3;
- b1 = binaryData[dataIndex] & 0xFF;
- b2 = binaryData[dataIndex + 1] & 0xFF;
- b3 = binaryData[dataIndex + 2] & 0xFF;
-
- l = (byte)(b2 & 0x0f);
- k = (byte)(b1 & 0x03);
-
- encodedIndex = i*4;
- encodedData[encodedIndex] = lookUpBase64Alphabet[ b1 >>2 ];
- encodedData[encodedIndex+1] = lookUpBase64Alphabet[(b2 >>4 ) |
-( k<<4 )];
- encodedData[encodedIndex+2] = lookUpBase64Alphabet[ (l <<2 ) |
-( b3>>6)];
- encodedData[encodedIndex+3] = lookUpBase64Alphabet[ b3 & 0x3f ];
- }
-
- // form integral number of 6-bit groups
- dataIndex = i*3;
- encodedIndex = i*4;
- if (fewerThan24bits == EIGHTBIT ) {
- b1 = binaryData[dataIndex];
- k = (byte) ( b1 &0x03 );
- encodedData[encodedIndex] = lookUpBase64Alphabet[ b1 >>2 ];
- encodedData[encodedIndex + 1] = lookUpBase64Alphabet[ k<<4 ];
- encodedData[encodedIndex + 2] = PAD;
- encodedData[encodedIndex + 3] = PAD;
- } else if ( fewerThan24bits == SIXTEENBIT ) {
-
- b1 = binaryData[dataIndex];
- b2 = binaryData[dataIndex +1 ];
- l = ( byte ) ( b2 &0x0f );
- k = ( byte ) ( b1 &0x03 );
- encodedData[encodedIndex] = lookUpBase64Alphabet[ b1 >>2 ];
- encodedData[encodedIndex + 1] = lookUpBase64Alphabet[ (b2 >>4 )
-| ( k<<4 )];
- encodedData[encodedIndex + 2] = lookUpBase64Alphabet[ l<<2 ];
- encodedData[encodedIndex + 3] = PAD;
- }
- return encodedData;
- }
-
- public byte[] decode(String enc) {
- return decode(enc.getBytes());
- }
-
- /**
- * Decodes Base64 data into octects
- *
- * @param base64Data Byte array containing Base64 data
- * @return Array containind decoded data.
- */
- public static byte[] decode( byte[] base64Data ) {
- int numberQuadruple = base64Data.length/FOURBYTE;
- byte decodedData[] = null;
- byte b1=0,b2=0,b3=0, b4=0, marker0=0, marker1=0;
-
- // Throw away anything not in base64Data
- // Adjust size
-
- int encodedIndex = 0;
- int dataIndex = 0;
- decodedData = new byte[ numberQuadruple*3 + 1 ];
-
- for (int i = 0; i<numberQuadruple; i++ ) {
- dataIndex = i*4;
- marker0 = base64Data[dataIndex +2];
- marker1 = base64Data[dataIndex +3];
-
- b1 = base64Alphabet[base64Data[dataIndex]];
- b2 = base64Alphabet[base64Data[dataIndex +1]];
-
- if ( marker0 != PAD && marker1 != PAD ) { //No PAD e.g 3cQl
- b3 = base64Alphabet[ marker0 ];
- b4 = base64Alphabet[ marker1 ];
-
- decodedData[encodedIndex] = (byte)( b1 <<2 | b2>>4 ) ;
- decodedData[encodedIndex+1] = (byte)(((b2 & 0xf)<<4 ) |(
-(b3>>2) & 0xf) );
- decodedData[encodedIndex+2] = (byte)( b3<<6 | b4 );
- } else if ( marker0 == PAD ) { //Two PAD e.g. 3c[Pad][Pad]
- decodedData[encodedIndex] = (byte)( b1 <<2 | b2>>4 ) ;
- decodedData[encodedIndex+1] = (byte)((b2 & 0xf)<<4 );
- decodedData[encodedIndex+2] = (byte) 0;
- } else if ( marker1 == PAD ) { //One PAD e.g. 3cQ[Pad]
- b3 = base64Alphabet[ marker0 ];
-
- decodedData[encodedIndex] = (byte)( b1 <<2 | b2>>4 );
- decodedData[encodedIndex+1] = (byte)(((b2 & 0xf)<<4 ) |(
-(b3>>2) & 0xf) );
- decodedData[encodedIndex+2] = (byte)( b3<<6);
- }
- encodedIndex += 3;
- }
- return decodedData;
-
- }
-
- static final int base64[]= {
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
- 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64,
- 64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
- 64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
- };
-
- public static String base64Decode( String orig ) {
- char chars[]=orig.toCharArray();
- StringBuffer sb=new StringBuffer();
- int i=0;
-
- int shift = 0; // # of excess bits stored in accum
- int acc = 0;
-
- for (i=0; i<chars.length; i++) {
- int v = base64[ chars[i] & 0xFF ];
-
- if ( v >= 64 ) {
- if( chars[i] != '=' )
- if (log.isLoggable(Level.INFO))
- log.info("Wrong char in base64: " + chars[i]);
- } else {
- acc= ( acc << 6 ) | v;
- shift += 6;
- if ( shift >= 8 ) {
- shift -= 8;
- sb.append( (char) ((acc >> shift) & 0xff));
- }
- }
- }
- return sb.toString();
- }
-
-
-}
-
projects / tomcat7.0 / commitdiff