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diff --git a/src/org/fox/ttrss/util/Base64.java b/src/org/fox/ttrss/util/Base64.java
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-// 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;
- }
-}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-11-16 07:03:17 +0000