Mega Code Archive
Xml dap Certs And Keys
<![CDATA[
/*
* XmldapCertsAndKeys.java
*
* Created on 6. September 2006, 11:08
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
//package org.xmldap.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.interfaces.RSAPrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.RSAPrivateKeySpec;
/**
*
* @author Axel Nennker
*/
public class XmldapCertsAndKeys {
static final String cert1B64 = "MIIDkDCCAvmgAwIBAgIJAO+Fcd4yj0h/MA0GCSqGSIb3DQEBBQUAMIGNMQswCQYD"
+ "VQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UEBxMNU2FuIEZyYW5j"
+ "aXNjbzEPMA0GA1UEChMGeG1sZGFwMScwJQYDVQQLFB5DaHVjayBNb3J0aW1vcmUg"
+ "JiBBeGVsIE5lbm5rZXIxFzAVBgNVBAMTDnd3dy54bWxkYXAub3JnMB4XDTA3MDgx"
+ "ODIxMTIzMVoXDTE3MDgxNTIxMTIzMVowgY0xCzAJBgNVBAYTAlVTMRMwEQYDVQQI"
+ "EwpDYWxpZm9ybmlhMRYwFAYDVQQHEw1TYW4gRnJhbmNpc2NvMQ8wDQYDVQQKEwZ4"
+ "bWxkYXAxJzAlBgNVBAsUHkNodWNrIE1vcnRpbW9yZSAmIEF4ZWwgTmVubmtlcjEX"
+ "MBUGA1UEAxMOd3d3LnhtbGRhcC5vcmcwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJ"
+ "AoGBAOKUn6/QqTZj/BWoQVxNFI0Z2AXI1azws+RyuJek60NiawQrFAKk0Ph+/YnU"
+ "iQAnzbsT+juZV08UpaPa2IE3g0+RFZtODlqoGGGakSOd9NNnDuNhsdtXJWgQq8pa"
+ "M9Sc4nUue31iq7LvmjSGSL5w84NglT48AcqVGr+/5vy8CfT/AgMBAAGjgfUwgfIw"
+ "HQYDVR0OBBYEFGcwQKLQtW8/Dql5t70BfXX66dmaMIHCBgNVHSMEgbowgbeAFGcw"
+ "QKLQtW8/Dql5t70BfXX66dmaoYGTpIGQMIGNMQswCQYDVQQGEwJVUzETMBEGA1UE"
+ "CBMKQ2FsaWZvcm5pYTEWMBQGA1UEBxMNU2FuIEZyYW5jaXNjbzEPMA0GA1UEChMG"
+ "eG1sZGFwMScwJQYDVQQLFB5DaHVjayBNb3J0aW1vcmUgJiBBeGVsIE5lbm5rZXIx"
+ "FzAVBgNVBAMTDnd3dy54bWxkYXAub3JnggkA74Vx3jKPSH8wDAYDVR0TBAUwAwEB"
+ "/zANBgkqhkiG9w0BAQUFAAOBgQAYQisGgrg1xw0TTgIZcz3JXr+ZtwjeKqEewoxC"
+ "xBz1uki7hJYHIznEZq4fzSMtcBMgbKmOTzFNV0Yr/tnJ9rrljRf8EXci62ffzj+K"
+ "kny7JtM6Ltxq0BJuF3jrXogdbsc5J3W9uJ7C2+uJTHG1mApbOdJGvLAGLCaNw5Np"
+ "P7+ZXQ==";
/** Creates a new instance of XmldapCertsAndKeys */
private XmldapCertsAndKeys() {
}
public static X509Certificate getXmldapCert() throws CertificateException {
String certB64 = "MIIDXTCCAkUCBEQd+4EwDQYJKoZIhvcNAQEEBQAwczELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNh"
+ "bGlmb3JuaWExFjAUBgNVBAcTDVNhbiBGcmFuY2lzY28xDzANBgNVBAoTBnhtbGRhcDERMA8GA1UE"
+ "CxMIaW5mb2NhcmQxEzARBgNVBAMTCnhtbGRhcC5vcmcwHhcNMDYwMzIwMDA0NjU3WhcNMDYwNjE4"
+ "MDA0NjU3WjBzMQswCQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UEBxMNU2Fu"
+ "IEZyYW5jaXNjbzEPMA0GA1UEChMGeG1sZGFwMREwDwYDVQQLEwhpbmZvY2FyZDETMBEGA1UEAxMK"
+ "eG1sZGFwLm9yZzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANMnkVA4xfpG0bLos9FO"
+ "pNBjHAdFahy2cJ7FUwuXd/IShnG+5qF/z1SdPWzRxTtpFFyodtXlBUEIbiT+IbYPZF1vCcBrcFa8"
+ "Kz/4rBjrpPZgllgA/WSVKjnJvw8q4/tO6CQZSlRlj/ebNK9VyT1kN+MrKV1SGTqaIJ2l+7Rd05WH"
+ "scwZMPdVWBbRrg76YTfy6H/NlQIArNLZanPvE0Vd5QfD4ZyG2hTh3y7ZlJAUndGJ/kfZw8sKuL9Q"
+ "Srh4eOTc280NQUmPGz6LP5MXNmu0RxEcomod1+ToKll90yEKFAUKuPYFgm9J+vYm4tzRequLy/nj"
+ "teRIkcfAdcAtt6PCYjUCAwEAATANBgkqhkiG9w0BAQQFAAOCAQEAURtxiA7qDSq/WlUpWpfWiZ7H"
+ "vveQrwTaTwV/Fk3l/I9e9WIRN51uFLuiLtZMMwR02BX7Yva1KQ/Gl999cm/0b5hptJ+TU29rVPZI"
+ "lI32c5vjcuSVoEda8+BRj547jlC0rNokyWm+YtBcDOwfHSPFFwVPPVxyQsVEebsiB6KazFq6iZ8A"
+ "0F2HLEnpsdFnGrSwBBbH3I3PH65ofrTTgj1Mjk5kA6EVaeefDCtlkX2ogIFMlcS6ruihX2mlCLUS"
+ "rlPs9TH+M4j/R/LV5QWJ93/X9gsxFrxVFGg3b75EKQP8MZ111/jaeKd80mUOAiTO06EtfjXZPrjP"
+ "N4e2l05i2EGDUA==";
byte[] certBytes = Base64.decode(certB64);
CertificateFactory cf = CertificateFactory.getInstance("X509");
ByteArrayInputStream inStream = new ByteArrayInputStream(certBytes);
return (X509Certificate) cf.generateCertificate(inStream);
}
public static RSAPrivateKey getXmldapPrivateKey()
throws InvalidKeySpecException, NoSuchAlgorithmException {
String exponentB64 = "AKh/FZVHiKxcIPA8g2mN8TUdMXuX58I7z4jS+57vYta387MG3DGZtQ/XXfHdPx9WjdoW0KWE2Pl5"
+ "SbOZW7tVcwigF88FrSJ5i6XDwUktmXjFwJM/TvUZlxWAKUdoOX8MC3DrAYZxeT3kC1mzAiBMPdC4"
+ "W4zNe7Zo0YgbsMzQZowVxZTP4GWa/L8o3adXTvdobP1nKW5buPj9vkgaGCTxE0vQzbuiGj1HRJe9"
+ "MRtvcU/I2shiIVE0F35wk8gw0FATtkvMpTpR12YVeo1JGZsHFQoD7gTD/n/NmC9Rjk2baYGj97hV"
+ "9EpDRcPNsMll2pVRy4Z45j2+t/yl8WjaqK5lhkE=";
String modulusB64 = "ANMnkVA4xfpG0bLos9FOpNBjHAdFahy2cJ7FUwuXd/IShnG+5qF/z1SdPWzRxTtpFFyodtXlBUEI"
+ "biT+IbYPZF1vCcBrcFa8Kz/4rBjrpPZgllgA/WSVKjnJvw8q4/tO6CQZSlRlj/ebNK9VyT1kN+Mr"
+ "KV1SGTqaIJ2l+7Rd05WHscwZMPdVWBbRrg76YTfy6H/NlQIArNLZanPvE0Vd5QfD4ZyG2hTh3y7Z"
+ "lJAUndGJ/kfZw8sKuL9QSrh4eOTc280NQUmPGz6LP5MXNmu0RxEcomod1+ToKll90yEKFAUKuPYF"
+ "gm9J+vYm4tzRequLy/njteRIkcfAdcAtt6PCYjU=";
byte[] exponentBytes = Base64.decode(exponentB64);
byte[] modulusBytes = Base64.decode(modulusB64);
BigInteger exponent = new BigInteger(1, exponentBytes);
BigInteger modulus = new BigInteger(1, modulusBytes);
RSAPrivateKeySpec ks = new RSAPrivateKeySpec(modulus, exponent);
KeyFactory kf = KeyFactory.getInstance("RSA");
return (RSAPrivateKey) kf.generatePrivate(ks);
}
public static String getXmldapCert1String() {
return cert1B64;
}
public static X509Certificate getXmldapCert1() throws CertificateException {
byte[] certBytes = Base64.decode(cert1B64);
CertificateFactory cf = CertificateFactory.getInstance("X509");
ByteArrayInputStream inStream = new ByteArrayInputStream(certBytes);
return (X509Certificate) cf.generateCertificate(inStream);
}
public static RSAPrivateKey getXmldapPrivateKey1()
throws InvalidKeySpecException, NoSuchAlgorithmException {
byte[] modulusBytes = { (byte) 0x00, (byte) 0xe2, (byte) 0x94,
(byte) 0x9f, (byte) 0xaf, (byte) 0xd0, (byte) 0xa9,
(byte) 0x36, (byte) 0x63, (byte) 0xfc, (byte) 0x15,
(byte) 0xa8, (byte) 0x41, (byte) 0x5c, (byte) 0x4d,
(byte) 0x14, (byte) 0x8d, (byte) 0x19, (byte) 0xd8,
(byte) 0x05, (byte) 0xc8, (byte) 0xd5, (byte) 0xac,
(byte) 0xf0, (byte) 0xb3, (byte) 0xe4, (byte) 0x72,
(byte) 0xb8, (byte) 0x97, (byte) 0xa4, (byte) 0xeb,
(byte) 0x43, (byte) 0x62, (byte) 0x6b, (byte) 0x04,
(byte) 0x2b, (byte) 0x14, (byte) 0x02, (byte) 0xa4,
(byte) 0xd0, (byte) 0xf8, (byte) 0x7e, (byte) 0xfd,
(byte) 0x89, (byte) 0xd4, (byte) 0x89, (byte) 0x00,
(byte) 0x27, (byte) 0xcd, (byte) 0xbb, (byte) 0x13,
(byte) 0xfa, (byte) 0x3b, (byte) 0x99, (byte) 0x57,
(byte) 0x4f, (byte) 0x14, (byte) 0xa5, (byte) 0xa3,
(byte) 0xda, (byte) 0xd8, (byte) 0x81, (byte) 0x37,
(byte) 0x83, (byte) 0x4f, (byte) 0x91, (byte) 0x15,
(byte) 0x9b, (byte) 0x4e, (byte) 0x0e, (byte) 0x5a,
(byte) 0xa8, (byte) 0x18, (byte) 0x61, (byte) 0x9a,
(byte) 0x91, (byte) 0x23, (byte) 0x9d, (byte) 0xf4,
(byte) 0xd3, (byte) 0x67, (byte) 0x0e, (byte) 0xe3,
(byte) 0x61, (byte) 0xb1, (byte) 0xdb, (byte) 0x57,
(byte) 0x25, (byte) 0x68, (byte) 0x10, (byte) 0xab,
(byte) 0xca, (byte) 0x5a, (byte) 0x33, (byte) 0xd4,
(byte) 0x9c, (byte) 0xe2, (byte) 0x75, (byte) 0x2e,
(byte) 0x7b, (byte) 0x7d, (byte) 0x62, (byte) 0xab,
(byte) 0xb2, (byte) 0xef, (byte) 0x9a, (byte) 0x34,
(byte) 0x86, (byte) 0x48, (byte) 0xbe, (byte) 0x70,
(byte) 0xf3, (byte) 0x83, (byte) 0x60, (byte) 0x95,
(byte) 0x3e, (byte) 0x3c, (byte) 0x01, (byte) 0xca,
(byte) 0x95, (byte) 0x1a, (byte) 0xbf, (byte) 0xbf,
(byte) 0xe6, (byte) 0xfc, (byte) 0xbc, (byte) 0x09,
(byte) 0xf4, (byte) 0xff };
byte[] exponentBytes = { (byte) 0x1d, (byte) 0xe6, (byte) 0xf1,
(byte) 0x60, (byte) 0x19, (byte) 0x90, (byte) 0x8b,
(byte) 0x4e, (byte) 0x0c, (byte) 0xb1, (byte) 0xaa,
(byte) 0xff, (byte) 0xdd, (byte) 0x37, (byte) 0x8a,
(byte) 0xf3, (byte) 0xc8, (byte) 0x2a, (byte) 0x5b,
(byte) 0x31, (byte) 0x13, (byte) 0x09, (byte) 0xfc,
(byte) 0xc6, (byte) 0x30, (byte) 0xea, (byte) 0xf6,
(byte) 0xf3, (byte) 0x84, (byte) 0x5f, (byte) 0x4c,
(byte) 0x08, (byte) 0x4c, (byte) 0x09, (byte) 0x43,
(byte) 0xca, (byte) 0x23, (byte) 0x43, (byte) 0x2f,
(byte) 0x14, (byte) 0xec, (byte) 0x65, (byte) 0x77,
(byte) 0x70, (byte) 0x26, (byte) 0x18, (byte) 0x70,
(byte) 0x28, (byte) 0x55, (byte) 0x7d, (byte) 0x20,
(byte) 0x74, (byte) 0x07, (byte) 0x1b, (byte) 0x9f,
(byte) 0xa3, (byte) 0x20, (byte) 0xed, (byte) 0x0b,
(byte) 0xef, (byte) 0xb0, (byte) 0xb5, (byte) 0xeb,
(byte) 0xcd, (byte) 0x2f, (byte) 0xcd, (byte) 0x4d,
(byte) 0xde, (byte) 0x37, (byte) 0xe5, (byte) 0x86,
(byte) 0x55, (byte) 0xf2, (byte) 0x34, (byte) 0xe7,
(byte) 0xd9, (byte) 0xf7, (byte) 0xb3, (byte) 0x45,
(byte) 0x2a, (byte) 0x92, (byte) 0x1b, (byte) 0x54,
(byte) 0x49, (byte) 0x41, (byte) 0x81, (byte) 0xbd,
(byte) 0xc0, (byte) 0x63, (byte) 0xd1, (byte) 0x86,
(byte) 0x45, (byte) 0xe7, (byte) 0xe3, (byte) 0xb3,
(byte) 0xf5, (byte) 0x77, (byte) 0x5f, (byte) 0x46,
(byte) 0x93, (byte) 0x20, (byte) 0x19, (byte) 0x9a,
(byte) 0x26, (byte) 0x9f, (byte) 0x48, (byte) 0x27,
(byte) 0x4b, (byte) 0x93, (byte) 0xa7, (byte) 0x1c,
(byte) 0xf2, (byte) 0x8a, (byte) 0x3b, (byte) 0xbe,
(byte) 0x40, (byte) 0x85, (byte) 0x92, (byte) 0x8a,
(byte) 0x3c, (byte) 0xfd, (byte) 0xeb, (byte) 0x18,
(byte) 0x2e, (byte) 0x04, (byte) 0x69, (byte) 0xe5, (byte) 0xa1 };
BigInteger exponent = new BigInteger(1, exponentBytes);
BigInteger modulus = new BigInteger(1, modulusBytes);
RSAPrivateKeySpec ks = new RSAPrivateKeySpec(modulus, exponent);
KeyFactory kf = KeyFactory.getInstance("RSA");
return (RSAPrivateKey) kf.generatePrivate(ks);
}
}
/*
* JBoss, Home of Professional Open Source Copyright 2005, JBoss Inc., and
* individual contributors as indicated by the @authors tag. See the
* copyright.txt in the distribution for a full listing of individual
* contributors.
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This software 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
* site: http://www.fsf.org.
*/
/**
* Encodes and decodes to and from Base64 notation.
*
* <p>
* Change Log:
* </p>
* <ul>
* <li>v2.1 - Cleaned up javadoc comments and unused variables and methods.
* Added some convenience methods for reading and writing to and from files.</li>
* <li>v2.0.2 - Now specifies UTF-8 encoding in places where the code fails on
* systems with other encodings (like EBCDIC).</li>
* <li>v2.0.1 - Fixed an error when decoding a single byte, that is, when the
* encoded data was a single byte.</li>
* <li>v2.0 - I got rid of methods that used booleans to set options. Now
* everything is more consolidated and cleaner. The code now detects when data
* that's being decoded is gzip-compressed and will decompress it automatically.
* Generally things are cleaner. You'll probably have to change some method
* calls that you were making to support the new options format (<tt>int</tt>s
* that you "OR" together).</li>
* <li>v1.5.1 - Fixed bug when decompressing and decoding to a byte[] using
* <tt>decode( String s, boolean gzipCompressed )</tt>. Added the ability to
* "suspend" encoding in the Output Stream so you can turn on and off the
* encoding if you need to embed base64 data in an otherwise "normal" stream
* (like an XML file).</li>
* <li>v1.5 - Output stream pases on flush() command but doesn't do anything
* itself. This helps when using GZIP streams. Added the ability to
* GZip-compress objects before encoding them.</li>
* <li>v1.4 - Added helper methods to read/write files.</li>
* <li>v1.3.6 - Fixed OutputStream.flush() so that 'position' is reset.</li>
* <li>v1.3.5 - Added flag to turn on and off line breaks. Fixed bug in input
* stream where last buffer being read, if not completely full, was not
* returned.</li>
* <li>v1.3.4 - Fixed when "improperly padded stream" error was thrown at the
* wrong time.</li>
* <li>v1.3.3 - Fixed I/O streams which were totally messed up.</li>
* </ul>
*
* <p>
* I am placing this code in the Public Domain. Do with it as you will. This
* software comes with no guarantees or warranties but with plenty of
* well-wishing instead! Please visit <a
* href="http://iharder.net/base64">http://iharder.net/base64</a> periodically
* to check for updates or to contribute improvements.
* </p>
*
* @author Robert Harder
* @author rob@iharder.net
* @version 2.1
*/
class Base64 {
// provide logging
/* ******** P U B L I C F I E L D S ******** */
/** No options specified. Value is zero. */
public final static int NO_OPTIONS = 0;
/** Specify encoding. */
public final static int ENCODE = 1;
/** Specify decoding. */
public final static int DECODE = 0;
/** Specify that data should be gzip-compressed. */
public final static int GZIP = 2;
/** Don't break lines when encoding (violates strict Base64 specification) */
public final static int DONT_BREAK_LINES = 8;
/* ******** P R I V A T E F I E L D S ******** */
/** Maximum line length (76) of Base64 output. */
private final static int MAX_LINE_LENGTH = 76;
/** The equals sign (=) as a byte. */
private final static byte EQUALS_SIGN = (byte) '=';
/** The new line character (\n) as a byte. */
private final static byte NEW_LINE = (byte) '\n';
/** Preferred encoding. */
private final static String PREFERRED_ENCODING = "UTF-8";
/** The 64 valid Base64 values. */
private final static byte[] ALPHABET;
private final static byte[] _NATIVE_ALPHABET = /*
* May be something funny
* like EBCDIC
*/
{ (byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F',
(byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K',
(byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P',
(byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U',
(byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z',
(byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
(byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j',
(byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o',
(byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't',
(byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y',
(byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3',
(byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8',
(byte) '9', (byte) '+', (byte) '/' };
/** Determine which ALPHABET to use. */
static {
byte[] __bytes;
try {
__bytes = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
.getBytes(PREFERRED_ENCODING);
} // end try
catch (java.io.UnsupportedEncodingException use) {
__bytes = _NATIVE_ALPHABET; // Fall back to native encoding
} // end catch
ALPHABET = __bytes;
} // end static
/**
* Translates a Base64 value to either its 6-bit reconstruction value or a
* negative number indicating some other meaning.
**/
private final static byte[] DECODABET = { -9, -9, -9, -9, -9, -9, -9, -9,
-9, // Decimal 0 - 8
-5, -5, // Whitespace: Tab and Linefeed
-9, -9, // Decimal 11 - 12
-5, // Whitespace: Carriage Return
-9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 14 -
// 26
-9, -9, -9, -9, -9, // Decimal 27 - 31
-5, // Whitespace: Space
-9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 33 - 42
62, // Plus sign at decimal 43
-9, -9, -9, // Decimal 44 - 46
63, // Slash at decimal 47
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, // Numbers zero through nine
-9, -9, -9, // Decimal 58 - 60
-1, // Equals sign at decimal 61
-9, -9, -9, // Decimal 62 - 64
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, // Letters 'A' through
// 'N'
14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // Letters 'O'
// through 'Z'
-9, -9, -9, -9, -9, -9, // Decimal 91 - 96
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, // Letters 'a'
// through 'm'
39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // Letters 'n'
// through 'z'
-9, -9, -9, -9 // Decimal 123 - 126
/*
* ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 127 - 139
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 140 - 152
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 153 - 165
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 166 - 178
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 179 - 191
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 192 - 204
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 205 - 217
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 218 - 230
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 231 - 243
* -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
*/
};
// I think I end up not using the BAD_ENCODING indicator.
// private final static byte BAD_ENCODING = -9; // Indicates error in
// encoding
private final static byte WHITE_SPACE_ENC = -5; // Indicates white space in
// encoding
private final static byte EQUALS_SIGN_ENC = -1; // Indicates equals sign in
// encoding
/** Defeats instantiation. */
private Base64() {
}
/* ******** E N C O D I N G M E T H O D S ******** */
/**
* Encodes up to the first three bytes of array <var>threeBytes</var> and
* returns a four-byte array in Base64 notation. The actual number of
* significant bytes in your array is given by <var>numSigBytes</var>. The
* array <var>threeBytes</var> needs only be as big as
* <var>numSigBytes</var>. Code can reuse a byte array by passing a
* four-byte array as <var>b4</var>.
*
* @param b4
* A reusable byte array to reduce array instantiation
* @param threeBytes
* the array to convert
* @param numSigBytes
* the number of significant bytes in your array
* @return four byte array in Base64 notation.
* @since 1.5.1
*/
private static byte[] encode3to4(byte[] b4, byte[] threeBytes,
int numSigBytes) {
encode3to4(threeBytes, 0, numSigBytes, b4, 0);
return b4;
} // end encode3to4
/**
* Encodes up to three bytes of the array <var>source</var> and writes the
* resulting four Base64 bytes to <var>destination</var>. The source and
* destination arrays can be manipulated anywhere along their length by
* specifying <var>srcOffset</var> and <var>destOffset</var>. This method
* does not check to make sure your arrays are large enough to accomodate
* <var>srcOffset</var> + 3 for the <var>source</var> array or
* <var>destOffset</var> + 4 for the <var>destination</var> array. The
* actual number of significant bytes in your array is given by
* <var>numSigBytes</var>.
*
* @param source
* the array to convert
* @param srcOffset
* the index where conversion begins
* @param numSigBytes
* the number of significant bytes in your array
* @param destination
* the array to hold the conversion
* @param destOffset
* the index where output will be put
* @return the <var>destination</var> array
* @since 1.3
*/
private static byte[] encode3to4(byte[] source, int srcOffset,
int numSigBytes, byte[] destination, int destOffset) {
// 1 2 3
// 01234567890123456789012345678901 Bit position
// --------000000001111111122222222 Array position from threeBytes
// --------| || || || | Six bit groups to index ALPHABET
// >>18 >>12 >> 6 >> 0 Right shift necessary
// 0x3f 0x3f 0x3f Additional AND
// Create buffer with zero-padding if there are only one or two
// significant bytes passed in the array.
// We have to shift left 24 in order to flush out the 1's that appear
// when Java treats a value as negative that is cast from a byte to an
// int.
int inBuff = (numSigBytes > 0 ? ((source[srcOffset] << 24) >>> 8) : 0)
| (numSigBytes > 1 ? ((source[srcOffset + 1] << 24) >>> 16) : 0)
| (numSigBytes > 2 ? ((source[srcOffset + 2] << 24) >>> 24) : 0);
switch (numSigBytes) {
case 3:
destination[destOffset] = ALPHABET[(inBuff >>> 18)];
destination[destOffset + 1] = ALPHABET[(inBuff >>> 12) & 0x3f];
destination[destOffset + 2] = ALPHABET[(inBuff >>> 6) & 0x3f];
destination[destOffset + 3] = ALPHABET[(inBuff) & 0x3f];
return destination;
case 2:
destination[destOffset] = ALPHABET[(inBuff >>> 18)];
destination[destOffset + 1] = ALPHABET[(inBuff >>> 12) & 0x3f];
destination[destOffset + 2] = ALPHABET[(inBuff >>> 6) & 0x3f];
destination[destOffset + 3] = EQUALS_SIGN;
return destination;
case 1:
destination[destOffset] = ALPHABET[(inBuff >>> 18)];
destination[destOffset + 1] = ALPHABET[(inBuff >>> 12) & 0x3f];
destination[destOffset + 2] = EQUALS_SIGN;
destination[destOffset + 3] = EQUALS_SIGN;
return destination;
default:
return destination;
} // end switch
} // end encode3to4
/**
* Serializes an object and returns the Base64-encoded version of that
* serialized object. If the object cannot be serialized or there is another
* error, the method will return <tt>null</tt>. The object is not
* GZip-compressed before being encoded.
*
* @param serializableObject
* The object to encode
* @return The Base64-encoded object
* @since 1.4
*/
public static String encodeObject(java.io.Serializable serializableObject) {
return encodeObject(serializableObject, NO_OPTIONS);
} // end encodeObject
/**
* Serializes an object and returns the Base64-encoded version of that
* serialized object. If the object cannot be serialized or there is another
* error, the method will return <tt>null</tt>.
* <p>
* Valid options:
*
* <pre>
* GZIP: gzip-compresses object before encoding it.
* DONT_BREAK_LINES: don't break lines at 76 characters
* <i>Note: Technically, this makes your encoding non-compliant.</i>
* </pre>
* <p>
* Example: <code>encodeObject( myObj, Base64.GZIP )</code> or
* <p>
* Example:
* <code>encodeObject( myObj, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
*
* @param serializableObject
* The object to encode
* @param options
* Specified options
* @return The Base64-encoded object
* @see Base64#GZIP
* @see Base64#DONT_BREAK_LINES
* @since 2.0
*/
public static String encodeObject(java.io.Serializable serializableObject,
int options) {
// Streams
java.io.ByteArrayOutputStream baos = null;
java.io.OutputStream b64os = null;
java.io.ObjectOutputStream oos = null;
java.util.zip.GZIPOutputStream gzos = null;
// Isolate options
int gzip = (options & GZIP);
int dontBreakLines = (options & DONT_BREAK_LINES);
try {
// ObjectOutputStream -> (GZIP) -> Base64 -> ByteArrayOutputStream
baos = new java.io.ByteArrayOutputStream();
b64os = new Base64.OutputStream(baos, ENCODE | dontBreakLines);
// GZip?
if (gzip == GZIP) {
gzos = new java.util.zip.GZIPOutputStream(b64os);
oos = new java.io.ObjectOutputStream(gzos);
} // end if: gzip
else
oos = new java.io.ObjectOutputStream(b64os);
oos.writeObject(serializableObject);
} // end try
catch (java.io.IOException e) {
e.printStackTrace();
return null;
} // end catch
finally {
try {
oos.close();
} catch (Exception e) {
}
try {
gzos.close();
} catch (Exception e) {
}
try {
b64os.close();
} catch (Exception e) {
}
try {
baos.close();
} catch (Exception e) {
}
} // end finally
// Return value according to relevant encoding.
try {
return new String(baos.toByteArray(), PREFERRED_ENCODING);
} // end try
catch (java.io.UnsupportedEncodingException uue) {
return new String(baos.toByteArray());
} // end catch
} // end encode
/**
* Encodes a byte array into Base64 notation. Does not GZip-compress data.
*
* @param source
* The data to convert
* @return the encode bytes
* @since 1.4
*/
public static String encodeBytes(byte[] source) {
return encodeBytes(source, 0, source.length, NO_OPTIONS);
} // end encodeBytes
/**
* Encodes a byte array into Base64 notation.
* <p>
* Valid options:
*
* <pre>
* GZIP: gzip-compresses object before encoding it.
* DONT_BREAK_LINES: don't break lines at 76 characters
* <i>Note: Technically, this makes your encoding non-compliant.</i>
* </pre>
* <p>
* Example: <code>encodeBytes( myData, Base64.GZIP )</code> or
* <p>
* Example:
* <code>encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
*
*
* @param source
* The data to convert
* @param options
* Specified options
* @return the encoded bytes
* @see Base64#GZIP
* @see Base64#DONT_BREAK_LINES
* @since 2.0
*/
public static String encodeBytes(byte[] source, int options) {
return encodeBytes(source, 0, source.length, options);
} // end encodeBytes
/**
* Encodes a byte array into Base64 notation. Does not GZip-compress data.
*
* @param source
* The data to convert
* @param off
* Offset in array where conversion should begin
* @param len
* Length of data to convert
* @return the text node
* @since 1.4
*/
public static String encodeBytes(byte[] source, int off, int len) {
return encodeBytes(source, off, len, NO_OPTIONS);
} // end encodeBytes
/**
* Encodes a byte array into Base64 notation.
* <p>
* Valid options:
*
* <pre>
* GZIP: gzip-compresses object before encoding it.
* DONT_BREAK_LINES: don't break lines at 76 characters
* <i>Note: Technically, this makes your encoding non-compliant.</i>
* </pre>
* <p>
* Example: <code>encodeBytes( myData, Base64.GZIP )</code> or
* <p>
* Example:
* <code>encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
*
*
* @param source
* The data to convert
* @param off
* Offset in array where conversion should begin
* @param len
* Length of data to convert
* @param options
* Specified options
* @see Base64#GZIP
* @see Base64#DONT_BREAK_LINES
* @return the text node
* @since 2.0
*/
public static String encodeBytes(byte[] source, int off, int len,
int options) {
// Isolate options
int dontBreakLines = (options & DONT_BREAK_LINES);
int gzip = (options & GZIP);
// Compress?
if (gzip == GZIP) {
java.io.ByteArrayOutputStream baos = null;
java.util.zip.GZIPOutputStream gzos = null;
Base64.OutputStream b64os = null;
try {
// GZip -> Base64 -> ByteArray
baos = new java.io.ByteArrayOutputStream();
b64os = new Base64.OutputStream(baos, ENCODE | dontBreakLines);
gzos = new java.util.zip.GZIPOutputStream(b64os);
gzos.write(source, off, len);
gzos.close();
} // end try
catch (java.io.IOException e) {
e.printStackTrace();
return null;
} // end catch
finally {
try {
gzos.close();
} catch (Exception e) {
}
try {
b64os.close();
} catch (Exception e) {
}
try {
baos.close();
} catch (Exception e) {
}
} // end finally
// Return value according to relevant encoding.
try {
return new String(baos.toByteArray(), PREFERRED_ENCODING);
} // end try
catch (java.io.UnsupportedEncodingException uue) {
return new String(baos.toByteArray());
} // end catch
} // end if: compress
// Else, don't compress. Better not to use streams at all then.
else {
// Convert option to boolean in way that code likes it.
boolean breakLines = dontBreakLines == 0;
int len43 = len * 4 / 3;
byte[] outBuff = new byte[(len43) // Main 4:3
+ ((len % 3) > 0 ? 4 : 0) // Account for padding
+ (breakLines ? (len43 / MAX_LINE_LENGTH) : 0)]; // New
// lines
int d = 0;
int e = 0;
int len2 = len - 2;
int lineLength = 0;
for (; d < len2; d += 3, e += 4) {
encode3to4(source, d + off, 3, outBuff, e);
lineLength += 4;
if (breakLines && lineLength == MAX_LINE_LENGTH) {
outBuff[e + 4] = NEW_LINE;
e++;
lineLength = 0;
} // end if: end of line
} // en dfor: each piece of array
if (d < len) {
encode3to4(source, d + off, len - d, outBuff, e);
e += 4;
} // end if: some padding needed
// Return value according to relevant encoding.
try {
return new String(outBuff, 0, e, PREFERRED_ENCODING);
} // end try
catch (java.io.UnsupportedEncodingException uue) {
return new String(outBuff, 0, e);
} // end catch
} // end else: don't compress
} // end encodeBytes
/* ******** D E C O D I N G M E T H O D S ******** */
/**
* Decodes four bytes from array <var>source</var> and writes the resulting
* bytes (up to three of them) to <var>destination</var>. The source and
* destination arrays can be manipulated anywhere along their length by
* specifying <var>srcOffset</var> and <var>destOffset</var>. This method
* does not check to make sure your arrays are large enough to accomodate
* <var>srcOffset</var> + 4 for the <var>source</var> array or
* <var>destOffset</var> + 3 for the <var>destination</var> array. This
* method returns the actual number of bytes that were converted from the
* Base64 encoding.
*
*
* @param source
* the array to convert
* @param srcOffset
* the index where conversion begins
* @param destination
* the array to hold the conversion
* @param destOffset
* the index where output will be put
* @return the number of decoded bytes converted
* @since 1.3
*/
private static int decode4to3(byte[] source, int srcOffset,
byte[] destination, int destOffset) {
// Example: Dk==
if (source[srcOffset + 2] == EQUALS_SIGN) {
// Two ways to do the same thing. Don't know which way I like best.
// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
// )
// | ( ( DECODABET[ source[ srcOffset + 1] ] << 24 ) >>> 12 );
int outBuff = ((DECODABET[source[srcOffset]] & 0xFF) << 18)
| ((DECODABET[source[srcOffset + 1]] & 0xFF) << 12);
destination[destOffset] = (byte) (outBuff >>> 16);
return 1;
}
// Example: DkL=
else if (source[srcOffset + 3] == EQUALS_SIGN) {
// Two ways to do the same thing. Don't know which way I like best.
// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
// )
// | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
// | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 );
int outBuff = ((DECODABET[source[srcOffset]] & 0xFF) << 18)
| ((DECODABET[source[srcOffset + 1]] & 0xFF) << 12)
| ((DECODABET[source[srcOffset + 2]] & 0xFF) << 6);
destination[destOffset] = (byte) (outBuff >>> 16);
destination[destOffset + 1] = (byte) (outBuff >>> 8);
return 2;
}
// Example: DkLE
else {
try {
// Two ways to do the same thing. Don't know which way I like
// best.
// int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 )
// >>> 6 )
// | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
// | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 )
// | ( ( DECODABET[ source[ srcOffset + 3 ] ] << 24 ) >>> 24 );
int outBuff = ((DECODABET[source[srcOffset]] & 0xFF) << 18)
| ((DECODABET[source[srcOffset + 1]] & 0xFF) << 12)
| ((DECODABET[source[srcOffset + 2]] & 0xFF) << 6)
| ((DECODABET[source[srcOffset + 3]] & 0xFF));
destination[destOffset] = (byte) (outBuff >> 16);
destination[destOffset + 1] = (byte) (outBuff >> 8);
destination[destOffset + 2] = (byte) (outBuff);
return 3;
} catch (Exception e) {
System.out.println("" + source[srcOffset] + ": "
+ (DECODABET[source[srcOffset]]));
System.out.println("" + source[srcOffset + 1] + ": "
+ (DECODABET[source[srcOffset + 1]]));
System.out.println("" + source[srcOffset + 2] + ": "
+ (DECODABET[source[srcOffset + 2]]));
System.out.println("" + source[srcOffset + 3] + ": "
+ (DECODABET[source[srcOffset + 3]]));
return -1;
} // end catch
}
} // end decodeToBytes
/**
* Very low-level access to decoding ASCII characters in the form of a byte
* array. Does not support automatically gunzipping or any other "fancy"
* features.
*
* @param source
* The Base64 encoded data
* @param off
* The offset of where to begin decoding
* @param len
* The length of characters to decode
* @return decoded data
* @since 1.3
*/
public static byte[] decode(byte[] source, int off, int len) {
int len34 = len * 3 / 4;
byte[] outBuff = new byte[len34]; // Upper limit on size of output
int outBuffPosn = 0;
byte[] b4 = new byte[4];
int b4Posn = 0;
int i = 0;
byte sbiCrop = 0;
byte sbiDecode = 0;
for (i = off; i < off + len; i++) {
sbiCrop = (byte) (source[i] & 0x7f); // Only the low seven bits
sbiDecode = DECODABET[sbiCrop];
if (sbiDecode >= WHITE_SPACE_ENC) // White space, Equals sign or
// better
{
if (sbiDecode >= EQUALS_SIGN_ENC) {
b4[b4Posn++] = sbiCrop;
if (b4Posn > 3) {
outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn);
b4Posn = 0;
// If that was the equals sign, break out of 'for' loop
if (sbiCrop == EQUALS_SIGN)
break;
} // end if: quartet built
} // end if: equals sign or better
} // end if: white space, equals sign or better
else {
throw new IllegalStateException(
"Bad Base64 input character at " + i + ": " + source[i]
+ "(decimal)");
} // end else:
} // each input character
byte[] out = new byte[outBuffPosn];
System.arraycopy(outBuff, 0, out, 0, outBuffPosn);
return out;
} // end decode
/**
* Decodes data from Base64 notation, automatically detecting
* gzip-compressed data and decompressing it.
*
* @param s
* the string to decode
* @return the decoded data
* @since 1.4
*/
public static byte[] decode(String s) {
byte[] bytes;
try {
bytes = s.getBytes(PREFERRED_ENCODING);
} // end try
catch (java.io.UnsupportedEncodingException uee) {
bytes = s.getBytes();
} // end catch
// </change>
// Decode
bytes = decode(bytes, 0, bytes.length);
// Check to see if it's gzip-compressed
// GZIP Magic Two-Byte Number: 0x8b1f (35615)
if (bytes != null && bytes.length >= 4) {
int head = (bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
if (java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
java.io.ByteArrayInputStream bais = null;
java.util.zip.GZIPInputStream gzis = null;
java.io.ByteArrayOutputStream baos = null;
byte[] buffer = new byte[2048];
int length = 0;
try {
baos = new java.io.ByteArrayOutputStream();
bais = new java.io.ByteArrayInputStream(bytes);
gzis = new java.util.zip.GZIPInputStream(bais);
while ((length = gzis.read(buffer)) >= 0) {
baos.write(buffer, 0, length);
} // end while: reading input
// No error? Get new bytes.
bytes = baos.toByteArray();
} // end try
catch (java.io.IOException e) {
// Just return originally-decoded bytes
} // end catch
finally {
try {
baos.close();
} catch (Exception e) {
}
try {
gzis.close();
} catch (Exception e) {
}
try {
bais.close();
} catch (Exception e) {
}
} // end finally
} // end if: gzipped
} // end if: bytes.length >= 2
return bytes;
} // end decode
/**
* Attempts to decode Base64 data and deserialize a Java Object within.
* Returns <tt>null</tt> if there was an error.
*
* @param encodedObject
* The Base64 data to decode
* @return The decoded and deserialized object
* @since 1.5
*/
public static Object decodeToObject(String encodedObject) {
// Decode and gunzip if necessary
byte[] objBytes = decode(encodedObject);
java.io.ByteArrayInputStream bais = null;
java.io.ObjectInputStream ois = null;
Object obj = null;
try {
bais = new java.io.ByteArrayInputStream(objBytes);
ois = new java.io.ObjectInputStream(bais);
obj = ois.readObject();
} // end try
catch (java.io.IOException e) {
e.printStackTrace();
obj = null;
} // end catch
catch (java.lang.ClassNotFoundException e) {
e.printStackTrace();
obj = null;
} // end catch
finally {
try {
bais.close();
} catch (Exception e) {
}
try {
ois.close();
} catch (Exception e) {
}
} // end finally
return obj;
} // end decodeObject
/**
* Convenience method for encoding data to a file.
*
* @param dataToEncode
* byte array of data to encode in base64 form
* @param filename
* Filename for saving encoded data
* @return <tt>true</tt> if successful, <tt>false</tt> otherwise
*
* @since 2.1
*/
public static boolean encodeToFile(byte[] dataToEncode, String filename) {
boolean success = false;
Base64.OutputStream bos = null;
try {
bos = new Base64.OutputStream(
new java.io.FileOutputStream(filename), Base64.ENCODE);
bos.write(dataToEncode);
success = true;
} // end try
catch (java.io.IOException e) {
success = false;
} // end catch: IOException
finally {
try {
bos.close();
} catch (Exception e) {
}
} // end finally
return success;
} // end encodeToFile
/**
* Convenience method for decoding data to a file.
*
* @param dataToDecode
* Base64-encoded data as a string
* @param filename
* Filename for saving decoded data
* @return <tt>true</tt> if successful, <tt>false</tt> otherwise
*
* @since 2.1
*/
public static boolean decodeToFile(String dataToDecode, String filename) {
boolean success = false;
Base64.OutputStream bos = null;
try {
bos = new Base64.OutputStream(
new java.io.FileOutputStream(filename), Base64.DECODE);
bos.write(dataToDecode.getBytes(PREFERRED_ENCODING));
success = true;
} // end try
catch (java.io.IOException e) {
success = false;
} // end catch: IOException
finally {
try {
bos.close();
} catch (Exception e) {
}
} // end finally
return success;
} // end decodeToFile
/**
* Convenience method for reading a base64-encoded file and decoding it.
*
* @param filename
* Filename for reading encoded data
* @return decoded byte array or null if unsuccessful
*
* @since 2.1
*/
public static byte[] decodeFromFile(String filename) {
byte[] decodedData = null;
Base64.InputStream bis = null;
try {
// Set up some useful variables
java.io.File file = new java.io.File(filename);
byte[] buffer = null;
int length = 0;
int numBytes = 0;
// Check for size of file
if (file.length() > Integer.MAX_VALUE) {
throw new IllegalStateException(
"File is too big for this convenience method ("
+ file.length() + " bytes).");
} // end if: file too big for int index
buffer = new byte[(int) file.length()];
// Open a stream
bis = new Base64.InputStream(new java.io.BufferedInputStream(
new java.io.FileInputStream(file)), Base64.DECODE);
// Read until done
while ((numBytes = bis.read(buffer, length, 4096)) >= 0)
length += numBytes;
// Save in a variable to return
decodedData = new byte[length];
System.arraycopy(buffer, 0, decodedData, 0, length);
} // end try
catch (java.io.IOException e) {
throw new IllegalStateException("Error decoding from file "
+ filename);
} // end catch: IOException
finally {
try {
bis.close();
} catch (Exception e) {
}
} // end finally
return decodedData;
} // end decodeFromFile
/**
* Convenience method for reading a binary file and base64-encoding it.
*
* @param filename
* Filename for reading binary data
* @return base64-encoded string or null if unsuccessful
*
* @since 2.1
*/
public static String encodeFromFile(String filename) {
String encodedData = null;
Base64.InputStream bis = null;
try {
// Set up some useful variables
java.io.File file = new java.io.File(filename);
byte[] buffer = new byte[(int) (file.length() * 1.4)];
int length = 0;
int numBytes = 0;
// Open a stream
bis = new Base64.InputStream(new java.io.BufferedInputStream(
new java.io.FileInputStream(file)), Base64.ENCODE);
// Read until done
while ((numBytes = bis.read(buffer, length, 4096)) >= 0)
length += numBytes;
// Save in a variable to return
encodedData = new String(buffer, 0, length,
Base64.PREFERRED_ENCODING);
} // end try
catch (java.io.IOException e) {
throw new IllegalStateException("Error encoding from file "
+ filename);
} // end catch: IOException
finally {
try {
bis.close();
} catch (Exception e) {
}
} // end finally
return encodedData;
} // end encodeFromFile
/* ******** I N N E R C L A S S I N P U T S T R E A M ******** */
/**
* A {@link Base64.InputStream} will read data from another
* <tt>java.io.InputStream</tt>, given in the constructor, and encode/decode
* to/from Base64 notation on the fly.
*
* @see Base64
* @since 1.3
*/
public static class InputStream extends java.io.FilterInputStream {
private boolean encode; // Encoding or decoding
private int position; // Current position in the buffer
private byte[] buffer; // Small buffer holding converted data
private int bufferLength; // Length of buffer (3 or 4)
private int numSigBytes; // Number of meaningful bytes in the buffer
private int lineLength;
private boolean breakLines; // Break lines at less than 80 characters
/**
* Constructs a {@link Base64.InputStream} in DECODE mode.
*
* @param in
* the <tt>java.io.InputStream</tt> from which to read data.
* @since 1.3
*/
public InputStream(java.io.InputStream in) {
this(in, DECODE);
} // end constructor
/**
* Constructs a {@link Base64.InputStream} in either ENCODE or DECODE
* mode.
* <p>
* Valid options:
*
* <pre>
* ENCODE or DECODE: Encode or Decode as data is read.
* DONT_BREAK_LINES: don't break lines at 76 characters
* (only meaningful when encoding)
* <i>Note: Technically, this makes your encoding non-compliant.</i>
* </pre>
* <p>
* Example: <code>new Base64.InputStream( in, Base64.DECODE )</code>
*
*
* @param in
* the <tt>java.io.InputStream</tt> from which to read data.
* @param options
* Specified options
* @see Base64#ENCODE
* @see Base64#DECODE
* @see Base64#DONT_BREAK_LINES
* @since 2.0
*/
public InputStream(java.io.InputStream in, int options) {
super(in);
this.breakLines = (options & DONT_BREAK_LINES) != DONT_BREAK_LINES;
this.encode = (options & ENCODE) == ENCODE;
this.bufferLength = encode ? 4 : 3;
this.buffer = new byte[bufferLength];
this.position = -1;
this.lineLength = 0;
} // end constructor
/**
* Reads enough of the input stream to convert to/from Base64 and
* returns the next byte.
*
* @return next byte
* @since 1.3
*/
public int read() throws java.io.IOException {
// Do we need to get data?
if (position < 0) {
if (encode) {
byte[] b3 = new byte[3];
int numBinaryBytes = 0;
for (int i = 0; i < 3; i++) {
try {
int b = in.read();
// If end of stream, b is -1.
if (b >= 0) {
b3[i] = (byte) b;
numBinaryBytes++;
} // end if: not end of stream
} // end try: read
catch (java.io.IOException e) {
// Only a problem if we got no data at all.
if (i == 0)
throw e;
} // end catch
} // end for: each needed input byte
if (numBinaryBytes > 0) {
encode3to4(b3, 0, numBinaryBytes, buffer, 0);
position = 0;
numSigBytes = 4;
} // end if: got data
else {
return -1;
} // end else
} // end if: encoding
// Else decoding
else {
byte[] b4 = new byte[4];
int i = 0;
for (i = 0; i < 4; i++) {
// Read four "meaningful" bytes:
int b = 0;
do {
b = in.read();
} while (b >= 0
&& DECODABET[b & 0x7f] <= WHITE_SPACE_ENC);
if (b < 0)
break; // Reads a -1 if end of stream
b4[i] = (byte) b;
} // end for: each needed input byte
if (i == 4) {
numSigBytes = decode4to3(b4, 0, buffer, 0);
position = 0;
} // end if: got four characters
else if (i == 0) {
return -1;
} // end else if: also padded correctly
else {
// Must have broken out from above.
throw new java.io.IOException(
"Improperly padded Base64 input.");
} // end
} // end else: decode
} // end else: get data
// Got data?
if (position >= 0) {
// End of relevant data?
if (/* !encode && */position >= numSigBytes)
return -1;
if (encode && breakLines && lineLength >= MAX_LINE_LENGTH) {
lineLength = 0;
return '\n';
} // end if
else {
lineLength++; // This isn't important when decoding
// but throwing an extra "if" seems
// just as wasteful.
int b = buffer[position++];
if (position >= bufferLength)
position = -1;
return b & 0xFF; // This is how you "cast" a byte that's
// intended to be unsigned.
} // end else
} // end if: position >= 0
// Else error
else {
// When JDK1.4 is more accepted, use an assertion here.
throw new java.io.IOException(
"Error in Base64 code reading stream.");
} // end else
} // end read
/**
* Calls {@link #read()} repeatedly until the end of stream is reached
* or <var>len</var> bytes are read. Returns number of bytes read into
* array or -1 if end of stream is encountered.
*
* @param dest
* array to hold values
* @param off
* offset for array
* @param len
* max number of bytes to read into array
* @return bytes read into array or -1 if end of stream is encountered.
* @since 1.3
*/
public int read(byte[] dest, int off, int len)
throws java.io.IOException {
int i;
int b;
for (i = 0; i < len; i++) {
b = read();
// if( b < 0 && i == 0 )
// return -1;
if (b >= 0)
dest[off + i] = (byte) b;
else if (i == 0)
return -1;
else
break; // Out of 'for' loop
} // end for: each byte read
return i;
} // end read
} // end inner class InputStream
/* ******** I N N E R C L A S S O U T P U T S T R E A M ******** */
/**
* A {@link Base64.OutputStream} will write data to another
* <tt>java.io.OutputStream</tt>, given in the constructor, and
* encode/decode to/from Base64 notation on the fly.
*
* @see Base64
* @since 1.3
*/
public static class OutputStream extends java.io.FilterOutputStream {
private boolean encode;
private int position;
private byte[] buffer;
private int bufferLength;
private int lineLength;
private boolean breakLines;
private byte[] b4; // Scratch used in a few places
private boolean suspendEncoding;
/**
* Constructs a {@link Base64.OutputStream} in ENCODE mode.
*
* @param out
* the <tt>java.io.OutputStream</tt> to which data will be
* written.
* @since 1.3
*/
public OutputStream(java.io.OutputStream out) {
this(out, ENCODE);
} // end constructor
/**
* Constructs a {@link Base64.OutputStream} in either ENCODE or DECODE
* mode.
* <p>
* Valid options:
*
* <pre>
* ENCODE or DECODE: Encode or Decode as data is read.
* DONT_BREAK_LINES: don't break lines at 76 characters
* (only meaningful when encoding)
* <i>Note: Technically, this makes your encoding non-compliant.</i>
* </pre>
* <p>
* Example: <code>new Base64.OutputStream( out, Base64.ENCODE )</code>
*
* @param out
* the <tt>java.io.OutputStream</tt> to which data will be
* written.
* @param options
* Specified options.
* @see Base64#ENCODE
* @see Base64#DECODE
* @see Base64#DONT_BREAK_LINES
* @since 1.3
*/
public OutputStream(java.io.OutputStream out, int options) {
super(out);
this.breakLines = (options & DONT_BREAK_LINES) != DONT_BREAK_LINES;
this.encode = (options & ENCODE) == ENCODE;
this.bufferLength = encode ? 3 : 4;
this.buffer = new byte[bufferLength];
this.position = 0;
this.lineLength = 0;
this.suspendEncoding = false;
this.b4 = new byte[4];
} // end constructor
/**
* Writes the byte to the output stream after converting to/from Base64
* notation. When encoding, bytes are buffered three at a time before
* the output stream actually gets a write() call. When decoding, bytes
* are buffered four at a time.
*
* @param theByte
* the byte to write
* @since 1.3
*/
public void write(int theByte) throws java.io.IOException {
// Encoding suspended?
if (suspendEncoding) {
super.out.write(theByte);
return;
} // end if: supsended
// Encode?
if (encode) {
buffer[position++] = (byte) theByte;
if (position >= bufferLength) // Enough to encode.
{
out.write(encode3to4(b4, buffer, bufferLength));
lineLength += 4;
if (breakLines && lineLength >= MAX_LINE_LENGTH) {
out.write(NEW_LINE);
lineLength = 0;
} // end if: end of line
position = 0;
} // end if: enough to output
} // end if: encoding
// Else, Decoding
else {
// Meaningful Base64 character?
if (DECODABET[theByte & 0x7f] > WHITE_SPACE_ENC) {
buffer[position++] = (byte) theByte;
if (position >= bufferLength) // Enough to output.
{
int len = Base64.decode4to3(buffer, 0, b4, 0);
out.write(b4, 0, len);
// out.write( Base64.decode4to3( buffer ) );
position = 0;
} // end if: enough to output
} // end if: meaningful base64 character
else if (DECODABET[theByte & 0x7f] != WHITE_SPACE_ENC) {
throw new java.io.IOException(
"Invalid character in Base64 data.");
} // end else: not white space either
} // end else: decoding
} // end write
/**
* Calls {@link #write(int)} repeatedly until <var>len</var> bytes are
* written.
*
* @param theBytes
* array from which to read bytes
* @param off
* offset for array
* @param len
* max number of bytes to read into array
* @since 1.3
*/
public void write(byte[] theBytes, int off, int len)
throws java.io.IOException {
// Encoding suspended?
if (suspendEncoding) {
super.out.write(theBytes, off, len);
return;
} // end if: supsended
for (int i = 0; i < len; i++) {
write(theBytes[off + i]);
} // end for: each byte written
} // end write
/**
* Method added by PHIL. [Thanks, PHIL. -Rob] This pads the buffer
* without closing the stream.
*
* @throws IOException
*/
public void flushBase64() throws java.io.IOException {
if (position > 0) {
if (encode) {
out.write(encode3to4(b4, buffer, position));
position = 0;
} // end if: encoding
else {
throw new java.io.IOException(
"Base64 input not properly padded.");
} // end else: decoding
} // end if: buffer partially full
} // end flush
/**
* Flushes and closes (I think, in the superclass) the stream.
*
* @since 1.3
*/
public void close() throws java.io.IOException {
// 1. Ensure that pending characters are written
flushBase64();
// 2. Actually close the stream
// Base class both flushes and closes.
super.close();
buffer = null;
out = null;
} // end close
/**
* Suspends encoding of the stream. May be helpful if you need to embed
* a piece of base640-encoded data in a stream.
*
* @since 1.5.1
* @throws IOException
*/
public void suspendEncoding() throws java.io.IOException {
flushBase64();
this.suspendEncoding = true;
} // end suspendEncoding
/**
* Resumes encoding of the stream. May be helpful if you need to embed a
* piece of base640-encoded data in a stream.
*
* @since 1.5.1
*/
public void resumeEncoding() {
this.suspendEncoding = false;
} // end resumeEncoding
} // end inner class OutputStream
} // end class Base64
]]>