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Update Base64 implementation to include fixes (using diff) from the original up to version 2.3.7.

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This commit is contained in:
Luke Taylor 2011-02-14 22:37:15 +00:00
parent 11a091f051
commit f509193604
1 changed files with 15 additions and 21 deletions
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36
core/src/main/java/org/springframework/security/core/codec/Base64.java
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@ -2,7 +2,7 @@ package org.springframework.security.core.codec;
/** /**
* Base64 encoder which is a reduced version of Robert Harder's public domain implementation. * Base64 encoder which is a reduced version of Robert Harder's public domain implementation (version 2.3.7).
* See <a href="http://iharder.net/base64">http://iharder.net/base64</a> for more information. * See <a href="http://iharder.net/base64">http://iharder.net/base64</a> for more information.
* <p> * <p>
* For internal use only. * For internal use only.
@ -101,8 +101,8 @@ public final class Base64 {
-9,-9,-9,-9,-9,-9, // Decimal 91 - 96 -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' 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' 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 // Decimal 123 - 127
/*,-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, // 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 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 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 166 - 178
@ -111,7 +111,7 @@ public final class Base64 {
-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 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 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,-9, // Decimal 231 - 243
-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255 */ -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
}; };
@ -163,8 +163,8 @@ public final class Base64 {
-9, // Decimal 96 -9, // Decimal 96
26,27,28,29,30,31,32,33,34,35,36,37,38, // Letters 'a' through 'm' 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' 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 // Decimal 123 - 127
/*,-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, // 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 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 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 166 - 178
@ -173,7 +173,7 @@ public final class Base64 {
-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 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 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,-9, // Decimal 231 - 243
-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255 */ -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
}; };
@ -228,8 +228,8 @@ public final class Base64 {
-9, // Decimal 96 -9, // Decimal 96
38,39,40,41,42,43,44,45,46,47,48,49,50, // Letters 'a' through 'm' 38,39,40,41,42,43,44,45,46,47,48,49,50, // Letters 'a' through 'm'
51,52,53,54,55,56,57,58,59,60,61,62,63, // Letters 'n' through 'z' 51,52,53,54,55,56,57,58,59,60,61,62,63, // Letters 'n' through 'z'
-9,-9,-9,-9 // Decimal 123 - 126 -9,-9,-9,-9,-9 // Decimal 123 - 127
/*,-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 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 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 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 166 - 178
@ -238,7 +238,7 @@ public final class Base64 {
-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 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 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,-9, // Decimal 231 - 243
-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255 */ -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
}; };
@ -370,10 +370,6 @@ public final class Base64 {
/** /**
* Similar to {@link #encodeBytes(byte[], int, int, int)} but returns
* a byte array instead of instantiating a String. This is more efficient
* if you're working with I/O streams and have large data sets to encode.
*
* *
* @param source The data to convert * @param source The data to convert
* @param off Offset in array where conversion should begin * @param off Offset in array where conversion should begin
@ -444,7 +440,7 @@ public final class Base64 {
// Only resize array if we didn't guess it right. // Only resize array if we didn't guess it right.
if( e < outBuff.length - 1 ){ if( e <= outBuff.length - 1 ){
byte[] finalOut = new byte[e]; byte[] finalOut = new byte[e];
System.arraycopy(outBuff,0, finalOut,0,e); System.arraycopy(outBuff,0, finalOut,0,e);
//System.err.println("Having to resize array from " + outBuff.length + " to " + e ); //System.err.println("Having to resize array from " + outBuff.length + " to " + e );
@ -601,26 +597,24 @@ public final class Base64 {
byte[] b4 = new byte[4]; // Four byte buffer from source, eliminating white space byte[] b4 = new byte[4]; // Four byte buffer from source, eliminating white space
int b4Posn = 0; // Keep track of four byte input buffer int b4Posn = 0; // Keep track of four byte input buffer
int i = 0; // Source array counter int i = 0; // Source array counter
byte sbiCrop = 0; // Low seven bits (ASCII) of input
byte sbiDecode = 0; // Special value from DECODABET byte sbiDecode = 0; // Special value from DECODABET
for( i = off; i < off+len; i++ ) { // Loop through source for( i = off; i < off+len; i++ ) { // Loop through source
sbiCrop = (byte)(source[i] & 0x7f); // Only the low seven bits sbiDecode = DECODABET[ source[i]&0xFF ];
sbiDecode = DECODABET[ sbiCrop ]; // Special value
// White space, Equals sign, or legit Base64 character // White space, Equals sign, or legit Base64 character
// Note the values such as -5 and -9 in the // Note the values such as -5 and -9 in the
// DECODABETs at the top of the file. // DECODABETs at the top of the file.
if( sbiDecode >= WHITE_SPACE_ENC ) { if( sbiDecode >= WHITE_SPACE_ENC ) {
if( sbiDecode >= EQUALS_SIGN_ENC ) { if( sbiDecode >= EQUALS_SIGN_ENC ) {
b4[ b4Posn++ ] = sbiCrop; // Save non-whitespace b4[ b4Posn++ ] = source[i]; // Save non-whitespace
if( b4Posn > 3 ) { // Time to decode? if( b4Posn > 3 ) { // Time to decode?
outBuffPosn += decode4to3( b4, 0, outBuff, outBuffPosn, options ); outBuffPosn += decode4to3( b4, 0, outBuff, outBuffPosn, options );
b4Posn = 0; b4Posn = 0;
// If that was the equals sign, break out of 'for' loop // If that was the equals sign, break out of 'for' loop
if( sbiCrop == EQUALS_SIGN ) { if( source[i] == EQUALS_SIGN ) {
break; break;
} }
} }
@ -629,7 +623,7 @@ public final class Base64 {
else { else {
// There's a bad input character in the Base64 stream. // There's a bad input character in the Base64 stream.
throw new InvalidBase64CharacterException( String.format( throw new InvalidBase64CharacterException( String.format(
"Bad Base64 input character '%c' in array position %d", source[i], i ) ); "Bad Base64 input character decimal %d in array position %d", ((int)source[i])&0xFF, i ) );
} }
} }