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Posted to fx-dev@ws.apache.org by we...@apache.org on 2005/09/09 21:37:27 UTC
svn commit: r279856 -
/webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java
Author: werner
Date: Fri Sep 9 12:37:21 2005
New Revision: 279856
URL: http://svn.apache.org/viewcvs?rev=279856&view=rev
Log:
can't depend on xml-security Base64 stuff...
making a copy (added a param for wrapping line during encoding),
fixed another problem in encode
Added:
webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java
Added: webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java
URL: http://svn.apache.org/viewcvs/webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java?rev=279856&view=auto
==============================================================================
--- webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java (added)
+++ webservices/wss4j/trunk/src/org/apache/ws/security/util/Base64.java Fri Sep 9 12:37:21 2005
@@ -0,0 +1,393 @@
+/*
+ * Copyright 1999-2004 The Apache Software Foundation.
+ *
+ * Licensed 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.ws.security.util;
+
+import org.apache.ws.security.WSSecurityException;
+
+public class Base64 {
+ /**
+ * Implementation of MIME's Base64 encoding and decoding conversions.
+ * Optimized code. (raw version taken from oreilly.jonathan.util,
+ * and currently org.apache.xerces.ds.util.Base64)
+ *
+ * @author Raul Benito(Of the xerces copy, and little adaptations).
+ * @author Anli Shundi
+ * @author Christian Geuer-Pollmann
+ * @see <A HREF="ftp://ftp.isi.edu/in-notes/rfc2045.txt">RFC 2045</A>
+ * @see org.apache.xml.security.transforms.implementations.TransformBase64Decode
+ */
+
+ /**
+ * {@link org.apache.commons.logging} logging facility
+ */
+ static org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory
+ .getLog(Base64.class.getName());
+
+ /**
+ * Field BASE64DEFAULTLENGTH
+ */
+ public static final int BASE64DEFAULTLENGTH = 76;
+
+ /**
+ * Field _base64length
+ */
+ static int _base64length = Base64.BASE64DEFAULTLENGTH;
+
+ static private final int BASELENGTH = 255;
+
+ static private final int LOOKUPLENGTH = 64;
+
+ static private final int TWENTYFOURBITGROUP = 24;
+
+ static private final int EIGHTBIT = 8;
+
+ static private final int SIXTEENBIT = 16;
+
+ static private final int FOURBYTE = 4;
+
+ static private final int SIGN = -128;
+
+ static private final char PAD = '=';
+
+ static private final boolean fDebug = false;
+
+ static final private byte[] base64Alphabet = new byte[BASELENGTH];
+
+ static final private char[] lookUpBase64Alphabet = new char[LOOKUPLENGTH];
+
+ 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;
+
+ for (int i = 0; i <= 25; i++)
+ lookUpBase64Alphabet[i] = (char) ('A' + i);
+
+ for (int i = 26, j = 0; i <= 51; i++, j++)
+ lookUpBase64Alphabet[i] = (char) ('a' + j);
+
+ for (int i = 52, j = 0; i <= 61; i++, j++)
+ lookUpBase64Alphabet[i] = (char) ('0' + j);
+ lookUpBase64Alphabet[62] = '+';
+ lookUpBase64Alphabet[63] = '/';
+
+ }
+
+ private Base64() {
+ // we don't allow instantiation
+ }
+
+ /**
+ * Encode a byte array and fold lines at the standard 76th character.
+ *
+ * @param binaryData <code>byte[]<code> to be base64 encoded
+ * @return the <code>String<code> with encoded data
+ */
+ public static String encode(byte[] binaryData) {
+ return encode(binaryData, BASE64DEFAULTLENGTH, false);
+ }
+
+ protected static boolean isWhiteSpace(byte octect) {
+ return (octect == 0x20 || octect == 0xd || octect == 0xa || octect == 0x9);
+ }
+
+ protected static boolean isPad(byte octect) {
+ return (octect == PAD);
+ }
+
+ /**
+ * Encodes hex octects into Base64
+ *
+ * @param binaryData Array containing binaryData
+ * @return Encoded Base64 array
+ */
+ /**
+ * Encode a byte array in Base64 format and return an optionally
+ * wrapped line.
+ *
+ * @param binaryData <code>byte[]</code> data to be encoded
+ * @param length <code>int<code> length of wrapped lines; No wrapping if less than 4.
+ * @return a <code>String</code> with encoded data
+ */
+ public static String encode(byte[] binaryData, int length, boolean wrap) {
+
+ if (length < 4) {
+ length = Integer.MAX_VALUE;
+ }
+
+ if (binaryData == null)
+ return null;
+
+ int lengthDataBits = binaryData.length * EIGHTBIT;
+ if (lengthDataBits == 0) {
+ return "";
+ }
+
+ int fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;
+ int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP;
+ int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1
+ : numberTriplets;
+ int quartesPerLine = length / 4;
+ int numberLines = (numberQuartet - 1) / quartesPerLine;
+ char encodedData[];
+
+ encodedData = new char[(numberQuartet * 4) + (wrap ? numberLines : 0)];
+
+ byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0;
+
+ int encodedIndex = 0;
+ int dataIndex = 0;
+ int tripletsDone = 0;
+ if (fDebug) {
+ System.out.println("number of triplets = " + numberTriplets);
+ }
+
+ for (int line = 0; line < numberLines; line++) {
+ for (int quartet = 0; quartet < quartesPerLine; quartet++) {
+ b1 = binaryData[dataIndex++];
+ b2 = binaryData[dataIndex++];
+ b3 = binaryData[dataIndex++];
+
+ if (fDebug) {
+ System.out.println("b1= " + b1 + ", b2= " + b2 + ", b3= "
+ + b3);
+ }
+
+ l = (byte) (b2 & 0x0f);
+ k = (byte) (b1 & 0x03);
+
+ byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
+ : (byte) ((b1) >> 2 ^ 0xc0);
+
+ byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
+ : (byte) ((b2) >> 4 ^ 0xf0);
+ byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6)
+ : (byte) ((b3) >> 6 ^ 0xfc);
+
+ if (fDebug) {
+ System.out.println("val2 = " + val2);
+ System.out.println("k4 = " + (k << 4));
+ System.out.println("vak = " + (val2 | (k << 4)));
+ }
+
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val2
+ | (k << 4)];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2)
+ | val3];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];
+
+ tripletsDone++;
+ }
+ if (wrap) {
+ encodedData[encodedIndex++] = 0xa;
+ }
+ }
+
+ for (; tripletsDone < numberTriplets; tripletsDone++) {
+ b1 = binaryData[dataIndex++];
+ b2 = binaryData[dataIndex++];
+ b3 = binaryData[dataIndex++];
+
+ if (fDebug) {
+ System.out.println("b1= " + b1 + ", b2= " + b2 + ", b3= " + b3);
+ }
+
+ l = (byte) (b2 & 0x0f);
+ k = (byte) (b1 & 0x03);
+
+ byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
+ : (byte) ((b1) >> 2 ^ 0xc0);
+
+ byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
+ : (byte) ((b2) >> 4 ^ 0xf0);
+ byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6)
+ : (byte) ((b3) >> 6 ^ 0xfc);
+
+ if (fDebug) {
+ System.out.println("val2 = " + val2);
+ System.out.println("k4 = " + (k << 4));
+ System.out.println("vak = " + (val2 | (k << 4)));
+ }
+
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];
+ }
+
+ // form integral number of 6-bit groups
+ if (fewerThan24bits == EIGHTBIT) {
+ b1 = binaryData[dataIndex];
+ k = (byte) (b1 & 0x03);
+ if (fDebug) {
+ System.out.println("b1=" + b1);
+ System.out.println("b1<<2 = " + (b1 >> 2));
+ }
+ byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
+ : (byte) ((b1) >> 2 ^ 0xc0);
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];
+ encodedData[encodedIndex++] = PAD;
+ encodedData[encodedIndex++] = PAD;
+ } else if (fewerThan24bits == SIXTEENBIT) {
+ b1 = binaryData[dataIndex];
+ b2 = binaryData[dataIndex + 1];
+ l = (byte) (b2 & 0x0f);
+ k = (byte) (b1 & 0x03);
+
+ byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)
+ : (byte) ((b1) >> 2 ^ 0xc0);
+ byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)
+ : (byte) ((b2) >> 4 ^ 0xf0);
+
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];
+ encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];
+ encodedData[encodedIndex++] = PAD;
+ }
+ return new String(encodedData);
+ }
+
+ /**
+ * Decodes Base64 data into octects
+ *
+ * @param encoded String containing Base64 data
+ * @return Array containing decoded data.
+ */
+ public static byte[] decode(String encoded) throws WSSecurityException {
+ byte[] base64Data = encoded.getBytes();
+ // remove white spaces
+ int len = removeWhiteSpace(base64Data);
+
+ if (len % FOURBYTE != 0) {
+ throw new WSSecurityException("decoding.divisible.four");
+ //should be divisible by four
+ }
+
+ int numberQuadruple = (len / FOURBYTE);
+
+ if (numberQuadruple == 0)
+ return new byte[0];
+
+ byte decodedData[] = null;
+ byte b1 = 0, b2 = 0, b3 = 0, b4 = 0;
+
+ int i = 0;
+ int encodedIndex = 0;
+ int dataIndex = 0;
+
+ //decodedData = new byte[ (numberQuadruple)*3];
+ dataIndex = (numberQuadruple - 1) * 4;
+ encodedIndex = (numberQuadruple - 1) * 3;
+ //first last bits.
+ b1 = base64Alphabet[base64Data[dataIndex++]];
+ b2 = base64Alphabet[base64Data[dataIndex++]];
+ if ((b1 == -1) || (b2 == -1)) {
+ throw new WSSecurityException("decoding.general");//if found "no data" just return null
+ }
+
+ byte d3, d4;
+ b3 = base64Alphabet[d3 = base64Data[dataIndex++]];
+ b4 = base64Alphabet[d4 = base64Data[dataIndex++]];
+ if ((b3 == -1) || (b4 == -1)) {
+ //Check if they are PAD characters
+ if (isPad(d3) && isPad(d4)) { //Two PAD e.g. 3c[Pad][Pad]
+ if ((b2 & 0xf) != 0)//last 4 bits should be zero
+ throw new WSSecurityException("decoding.general");
+ decodedData = new byte[encodedIndex + 1];
+ decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
+ } else if (!isPad(d3) && isPad(d4)) { //One PAD e.g. 3cQ[Pad]
+ if ((b3 & 0x3) != 0)//last 2 bits should be zero
+ throw new WSSecurityException("decoding.general");
+ decodedData = new byte[encodedIndex + 2];
+ decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
+ decodedData[encodedIndex] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
+ } else {
+ throw new WSSecurityException("decoding.general");//an error like "3c[Pad]r", "3cdX", "3cXd", "3cXX" where X is non data
+ }
+ } else {
+ //No PAD e.g 3cQl
+ decodedData = new byte[encodedIndex + 3];
+ decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
+ decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
+ decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);
+ }
+ encodedIndex = 0;
+ dataIndex = 0;
+ //the begin
+ for (i = numberQuadruple - 1; i > 0; i--) {
+ b1 = base64Alphabet[base64Data[dataIndex++]];
+ b2 = base64Alphabet[base64Data[dataIndex++]];
+ b3 = base64Alphabet[base64Data[dataIndex++]];
+ b4 = base64Alphabet[base64Data[dataIndex++]];
+
+ if ((b1 == -1) || (b2 == -1) || (b3 == -1) || (b4 == -1)) {
+ throw new WSSecurityException("decoding.general");//if found "no data" just return null
+ }
+
+ decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);
+ decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
+ decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);
+ }
+ return decodedData;
+ }
+
+ /**
+ * remove WhiteSpace from MIME containing encoded Base64 data.
+ *
+ * @param data the byte array of base64 data (with WS)
+ * @return the new length
+ */
+ protected static int removeWhiteSpace(byte[] data) {
+ if (data == null)
+ return 0;
+
+ // count characters that's not whitespace
+ int newSize = 0;
+ int len = data.length;
+ for (int i = 0; i < len; i++) {
+ byte dataS = data[i];
+ if (!isWhiteSpace(dataS))
+ data[newSize++] = dataS;
+ }
+ return newSize;
+ }
+
+ /**
+ * @param args
+ */
+ public static void main(String[] args) {
+ // TODO Auto-generated method stub
+
+ }
+}
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