switch to HttpURLConnection (which should enable SNI on recent android

versions)

1 files changed, 0 insertions, 582 deletions

diff --git a/src/org/fox/ttrss/util/Base64.java b/src/org/fox/ttrss/util/Base64.java
deleted file mode 100644
index 5c8136db..00000000
--- a/src/org/fox/ttrss/util/Base64.java
+++ /dev/null
@@ -1,582 +0,0 @@
-// Portions copyright 2002, Google, Inc.
-//
-// 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.fox.ttrss.util;
-
-// This code was converted from code at http://iharder.sourceforge.net/base64/
-// Lots of extraneous features were removed.
-/* The original code said:
- * <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/xmlizable">http://iharder.net/xmlizable</a>
- * periodically to check for updates or to contribute improvements.
- * </p>
- *
- * @author Robert Harder
- * @author rharder@usa.net
- * @version 1.3
- */
-
-/**
- * Base64 converter class. This code is not a complete MIME encoder; it simply
- * converts binary data to base64 data and back.
- * 
- * <p>
- * Note {@link CharBase64} is a GWT-compatible implementation of this class.
- */
-public class Base64 {
-	/** Specify encoding (value is {@code true}). */
-	public final static boolean ENCODE = true;
-
-	/** Specify decoding (value is {@code false}). */
-	public final static boolean DECODE = false;
-
-	/** 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';
-
-	/**
-	 * The 64 valid Base64 values.
-	 */
-	private final static byte[] ALPHABET = { (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) '/' };
-
-	/**
-	 * The 64 valid web safe Base64 values.
-	 */
-	private final static byte[] WEBSAFE_ALPHABET = { (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) '_' };
-
-	/**
-	 * 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, -9 // Decimal 123 - 127
-	/*
-	 * ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 128 - 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
-	 */
-	};
-
-	/** The web safe decodabet */
-	private final static byte[] WEBSAFE_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, -9, -9, // Decimal 33 - 44
-			62, // Dash '-' sign at decimal 45
-			-9, -9, // Decimal 46-47
-			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, // Decimal 91-94
-			63, // Underscore '_' at decimal 95
-			-9, // Decimal 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, -9 // Decimal 123 - 127
-	/*
-	 * ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 128 - 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
-	 */
-	};
-
-	// Indicates white space in encoding
-	private final static byte WHITE_SPACE_ENC = -5;
-	// Indicates equals sign in encoding
-	private final static byte EQUALS_SIGN_ENC = -1;
-
-	/** Defeats instantiation. */
-	private Base64() {
-	}
-
-	/*   ******** E N C O D I N G M E T H O D S ******** */
-
-	/**
-	 * 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 accommodate
-	 * <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
-	 * @param alphabet
-	 *            is the encoding alphabet
-	 * @return the <var>destination</var> array
-	 * @since 1.3
-	 */
-	private static byte[] encode3to4(byte[] source, int srcOffset, int numSigBytes, byte[] destination, int destOffset, byte[] alphabet) {
-		// 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
-
-	/**
-	 * Encodes a byte array into Base64 notation. Equivalent to calling {@code
-	 * encodeBytes(source, 0, source.length)}
-	 * 
-	 * @param source
-	 *            The data to convert
-	 * @since 1.4
-	 */
-	public static String encode(byte[] source) {
-		return encode(source, 0, source.length, ALPHABET, true);
-	}
-
-	/**
-	 * Encodes a byte array into web safe Base64 notation.
-	 * 
-	 * @param source
-	 *            The data to convert
-	 * @param doPadding
-	 *            is {@code true} to pad result with '=' chars if it does not
-	 *            fall on 3 byte boundaries
-	 */
-	public static String encodeWebSafe(byte[] source, boolean doPadding) {
-		return encode(source, 0, source.length, WEBSAFE_ALPHABET, doPadding);
-	}
-
-	/**
-	 * Encodes a byte array into Base64 notation.
-	 * 
-	 * @param source
-	 *            the data to convert
-	 * @param off
-	 *            offset in array where conversion should begin
-	 * @param len
-	 *            length of data to convert
-	 * @param alphabet
-	 *            the encoding alphabet
-	 * @param doPadding
-	 *            is {@code true} to pad result with '=' chars if it does not
-	 *            fall on 3 byte boundaries
-	 * @since 1.4
-	 */
-	public static String encode(byte[] source, int off, int len, byte[] alphabet, boolean doPadding) {
-		byte[] outBuff = encode(source, off, len, alphabet, Integer.MAX_VALUE);
-		int outLen = outBuff.length;
-
-		// If doPadding is false, set length to truncate '='
-		// padding characters
-		while (doPadding == false && outLen > 0) {
-			if (outBuff[outLen - 1] != '=') {
-				break;
-			}
-			outLen -= 1;
-		}
-
-		return new String(outBuff, 0, outLen);
-	}
-
-	/**
-	 * Encodes a byte array into Base64 notation.
-	 * 
-	 * @param source
-	 *            the data to convert
-	 * @param off
-	 *            offset in array where conversion should begin
-	 * @param len
-	 *            length of data to convert
-	 * @param alphabet
-	 *            is the encoding alphabet
-	 * @param maxLineLength
-	 *            maximum length of one line.
-	 * @return the BASE64-encoded byte array
-	 */
-	public static byte[] encode(byte[] source, int off, int len, byte[] alphabet, int maxLineLength) {
-		int lenDiv3 = (len + 2) / 3; // ceil(len / 3)
-		int len43 = lenDiv3 * 4;
-		byte[] outBuff = new byte[len43 // Main 4:3
-				+ (len43 / maxLineLength)]; // New lines
-
-		int d = 0;
-		int e = 0;
-		int len2 = len - 2;
-		int lineLength = 0;
-		for (; d < len2; d += 3, e += 4) {
-
-			// The following block of code is the same as
-			// encode3to4( source, d + off, 3, outBuff, e, alphabet );
-			// but inlined for faster encoding (~20% improvement)
-			int inBuff = ((source[d + off] << 24) >>> 8) | ((source[d + 1 + off] << 24) >>> 16) | ((source[d + 2 + off] << 24) >>> 24);
-			outBuff[e] = alphabet[(inBuff >>> 18)];
-			outBuff[e + 1] = alphabet[(inBuff >>> 12) & 0x3f];
-			outBuff[e + 2] = alphabet[(inBuff >>> 6) & 0x3f];
-			outBuff[e + 3] = alphabet[(inBuff) & 0x3f];
-
-			lineLength += 4;
-			if (lineLength == maxLineLength) {
-				outBuff[e + 4] = NEW_LINE;
-				e++;
-				lineLength = 0;
-			} // end if: end of line
-		} // end for: each piece of array
-
-		if (d < len) {
-			encode3to4(source, d + off, len - d, outBuff, e, alphabet);
-
-			lineLength += 4;
-			if (lineLength == maxLineLength) {
-				// Add a last newline
-				outBuff[e + 4] = NEW_LINE;
-				e++;
-			}
-			e += 4;
-		}
-
-		assert (e == outBuff.length);
-		return outBuff;
-	}
-
-	/*   ******** 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 accommodate
-	 * <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
-	 * @param decodabet
-	 *            the decodabet for decoding Base64 content
-	 * @return the number of decoded bytes converted
-	 * @since 1.3
-	 */
-	private static int decode4to3(byte[] source, int srcOffset, byte[] destination, int destOffset, byte[] decodabet) {
-		// Example: Dk==
-		if (source[srcOffset + 2] == EQUALS_SIGN) {
-			int outBuff = ((decodabet[source[srcOffset]] << 24) >>> 6) | ((decodabet[source[srcOffset + 1]] << 24) >>> 12);
-
-			destination[destOffset] = (byte) (outBuff >>> 16);
-			return 1;
-		} else if (source[srcOffset + 3] == EQUALS_SIGN) {
-			// Example: DkL=
-			int outBuff = ((decodabet[source[srcOffset]] << 24) >>> 6) | ((decodabet[source[srcOffset + 1]] << 24) >>> 12)
-					| ((decodabet[source[srcOffset + 2]] << 24) >>> 18);
-
-			destination[destOffset] = (byte) (outBuff >>> 16);
-			destination[destOffset + 1] = (byte) (outBuff >>> 8);
-			return 2;
-		} else {
-			// Example: DkLE
-			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);
-
-			destination[destOffset] = (byte) (outBuff >> 16);
-			destination[destOffset + 1] = (byte) (outBuff >> 8);
-			destination[destOffset + 2] = (byte) (outBuff);
-			return 3;
-		}
-	} // end decodeToBytes
-
-	/**
-	 * Decodes data from Base64 notation.
-	 * 
-	 * @param s
-	 *            the string to decode (decoded in default encoding)
-	 * @return the decoded data
-	 * @since 1.4
-	 */
-	public static byte[] decode(String s) throws Base64DecoderException {
-		byte[] bytes = s.getBytes();
-		return decode(bytes, 0, bytes.length);
-	}
-
-	/**
-	 * Decodes data from web safe Base64 notation. Web safe encoding uses '-'
-	 * instead of '+', '_' instead of '/'
-	 * 
-	 * @param s
-	 *            the string to decode (decoded in default encoding)
-	 * @return the decoded data
-	 */
-	public static byte[] decodeWebSafe(String s) throws Base64DecoderException {
-		byte[] bytes = s.getBytes();
-		return decodeWebSafe(bytes, 0, bytes.length);
-	}
-
-	/**
-	 * Decodes Base64 content in byte array format and returns the decoded byte
-	 * array.
-	 * 
-	 * @param source
-	 *            The Base64 encoded data
-	 * @return decoded data
-	 * @since 1.3
-	 * @throws Base64DecoderException
-	 */
-	public static byte[] decode(byte[] source) throws Base64DecoderException {
-		return decode(source, 0, source.length);
-	}
-
-	/**
-	 * Decodes web safe Base64 content in byte array format and returns the
-	 * decoded data. Web safe encoding uses '-' instead of '+', '_' instead of
-	 * '/'
-	 * 
-	 * @param source
-	 *            the string to decode (decoded in default encoding)
-	 * @return the decoded data
-	 */
-	public static byte[] decodeWebSafe(byte[] source) throws Base64DecoderException {
-		return decodeWebSafe(source, 0, source.length);
-	}
-
-	/**
-	 * Decodes Base64 content in byte array format and returns the decoded byte
-	 * array.
-	 * 
-	 * @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
-	 * @throws Base64DecoderException
-	 */
-	public static byte[] decode(byte[] source, int off, int len) throws Base64DecoderException {
-		return decode(source, off, len, DECODABET);
-	}
-
-	/**
-	 * Decodes web safe Base64 content in byte array format and returns the
-	 * decoded byte array. Web safe encoding uses '-' instead of '+', '_'
-	 * instead of '/'
-	 * 
-	 * @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
-	 */
-	public static byte[] decodeWebSafe(byte[] source, int off, int len) throws Base64DecoderException {
-		return decode(source, off, len, WEBSAFE_DECODABET);
-	}
-
-	/**
-	 * Decodes Base64 content using the supplied decodabet and returns the
-	 * decoded byte array.
-	 * 
-	 * @param source
-	 *            the Base64 encoded data
-	 * @param off
-	 *            the offset of where to begin decoding
-	 * @param len
-	 *            the length of characters to decode
-	 * @param decodabet
-	 *            the decodabet for decoding Base64 content
-	 * @return decoded data
-	 */
-	public static byte[] decode(byte[] source, int off, int len, byte[] decodabet) throws Base64DecoderException {
-		int len34 = len * 3 / 4;
-		byte[] outBuff = new byte[2 + 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 = 0; i < len; i++) {
-			sbiCrop = (byte) (source[i + off] & 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) {
-					// An equals sign (for padding) must not occur at position 0
-					// or 1
-					// and must be the last byte[s] in the encoded value
-					if (sbiCrop == EQUALS_SIGN) {
-						int bytesLeft = len - i;
-						byte lastByte = (byte) (source[len - 1 + off] & 0x7f);
-						if (b4Posn == 0 || b4Posn == 1) {
-							throw new Base64DecoderException("invalid padding byte '=' at byte offset " + i);
-						} else if ((b4Posn == 3 && bytesLeft > 2) || (b4Posn == 4 && bytesLeft > 1)) {
-							throw new Base64DecoderException("padding byte '=' falsely signals end of encoded value " + "at offset " + i);
-						} else if (lastByte != EQUALS_SIGN && lastByte != NEW_LINE) {
-							throw new Base64DecoderException("encoded value has invalid trailing byte");
-						}
-						break;
-					}
-
-					b4[b4Posn++] = sbiCrop;
-					if (b4Posn == 4) {
-						outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn, decodabet);
-						b4Posn = 0;
-					}
-				}
-			} else {
-				throw new Base64DecoderException("Bad Base64 input character at " + i + ": " + source[i + off] + "(decimal)");
-			}
-		}
-
-		// Because web safe encoding allows non padding base64 encodes, we
-		// need to pad the rest of the b4 buffer with equal signs when
-		// b4Posn != 0. There can be at most 2 equal signs at the end of
-		// four characters, so the b4 buffer must have two or three
-		// characters. This also catches the case where the input is
-		// padded with EQUALS_SIGN
-		if (b4Posn != 0) {
-			if (b4Posn == 1) {
-				// Ensure you have set your public key
-				throw new Base64DecoderException("single trailing character at offset " + (len - 1));
-			}
-			b4[b4Posn++] = EQUALS_SIGN;
-			outBuffPosn += decode4to3(b4, 0, outBuff, outBuffPosn, decodabet);
-		}
-
-		byte[] out = new byte[outBuffPosn];
-		System.arraycopy(outBuff, 0, out, 0, outBuffPosn);
-		return out;
-	}
-}