mirror of
https://github.com/DarkflameUniverse/NexusDashboard.git
synced 2024-11-25 15:07:18 +00:00
95 lines
3.2 KiB
JavaScript
95 lines
3.2 KiB
JavaScript
/*
|
|
Copyright (c) 2011, Daniel Guerrero
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL DANIEL GUERRERO BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* Uses the new array typed in javascript to binary base64 encode/decode
|
|
* at the moment just decodes a binary base64 encoded
|
|
* into either an ArrayBuffer (decodeArrayBuffer)
|
|
* or into an Uint8Array (decode)
|
|
*
|
|
* References:
|
|
* https://developer.mozilla.org/en/JavaScript_typed_arrays/ArrayBuffer
|
|
* https://developer.mozilla.org/en/JavaScript_typed_arrays/Uint8Array
|
|
*/
|
|
|
|
var Base64Binary = {
|
|
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
|
|
|
|
/* will return a Uint8Array type */
|
|
decodeArrayBuffer: function(input) {
|
|
var bytes = (input.length/4) * 3;
|
|
var ab = new ArrayBuffer(bytes);
|
|
this.decode(input, ab);
|
|
|
|
return ab;
|
|
},
|
|
|
|
removePaddingChars: function(input){
|
|
var lkey = this._keyStr.indexOf(input.charAt(input.length - 1));
|
|
if(lkey == 64){
|
|
return input.substring(0,input.length - 1);
|
|
}
|
|
return input;
|
|
},
|
|
|
|
decode: function (input, arrayBuffer) {
|
|
//get last chars to see if are valid
|
|
input = this.removePaddingChars(input);
|
|
input = this.removePaddingChars(input);
|
|
|
|
var bytes = parseInt((input.length / 4) * 3, 10);
|
|
|
|
var uarray;
|
|
var chr1, chr2, chr3;
|
|
var enc1, enc2, enc3, enc4;
|
|
var i = 0;
|
|
var j = 0;
|
|
|
|
if (arrayBuffer)
|
|
uarray = new Uint8Array(arrayBuffer);
|
|
else
|
|
uarray = new Uint8Array(bytes);
|
|
|
|
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
|
|
|
for (i=0; i<bytes; i+=3) {
|
|
//get the 3 octects in 4 ascii chars
|
|
enc1 = this._keyStr.indexOf(input.charAt(j++));
|
|
enc2 = this._keyStr.indexOf(input.charAt(j++));
|
|
enc3 = this._keyStr.indexOf(input.charAt(j++));
|
|
enc4 = this._keyStr.indexOf(input.charAt(j++));
|
|
|
|
chr1 = (enc1 << 2) | (enc2 >> 4);
|
|
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
|
|
chr3 = ((enc3 & 3) << 6) | enc4;
|
|
|
|
uarray[i] = chr1;
|
|
if (enc3 != 64) uarray[i+1] = chr2;
|
|
if (enc4 != 64) uarray[i+2] = chr3;
|
|
}
|
|
|
|
return uarray;
|
|
}
|
|
}
|