Automatically decrypts the Base64 signature on the Raindrop.live.
// ==UserScript==
// @name Raindrop Auto Base64 Resolver
// @name:ko 레인드롭 자동 Base64 해독기
// @version 0.1
// @description Automatically decrypts the Base64 signature on the Raindrop.live.
// @description:ko Raindrop.live의 Base64 시그니쳐를 자동으로 해독해줍니다.
// @author Renge
// @match https://raindrop.live/*
// @grant none
// @namespace https://greasyfork.org/users/751945
// ==/UserScript==
var Base64 = {
// private property
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
// public method for encoding
encode : function (input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = Base64._utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output +
this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
}
return output;
},
// public method for decoding
decode : function (input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = Base64._utf8_decode(output);
return output;
},
// private method for UTF-8 encoding
_utf8_encode : function (string) {
string = string.replace(/\r\n/g,"\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
}
else if((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
}
else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
},
// private method for UTF-8 decoding
_utf8_decode : function (utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while ( i < utftext.length ) {
c = utftext.charCodeAt(i);
if (c < 128) {
string += String.fromCharCode(c);
i++;
}
else if((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i+1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
}
else {
c2 = utftext.charCodeAt(i+1);
c3 = utftext.charCodeAt(i+2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}
var bnum = -1;
var knum = -1;
var cnt = 0;
$('.article-extra-value>table>tbody th').each( function() {
if($( this ).text().includes('Signature'))
bnum = cnt;
if($( this ).text().includes('🌳'))
bnum = cnt;
if($( this ).text().includes('KEY'))
knum = cnt;
cnt+=1;
} );
var cnum = $('span[style="color:#ecf0f1;"]>span').length;
var dnum = $('span[style="color:#bdc3c7;"]').length;
if(bnum != -1 || cnum != 0 || dnum != 0){
var b64 =[];
if(bnum != -1){
b64 = $('.article-extra-value>table tr:eq('+bnum+') span').text().split("\n");
}else if(cnum != 0){
b64 = $('span[style="color:#ecf0f1;"]>span').text().split("\n");
}else if(dnum != 0){
$('span[style="color:#bdc3c7;"]').each( function() {
b64.push($( this ).text());
} );
}
console.log(b64);
var dec = [];
var separators = [' ', '\n'];
for(var i=0;i<b64.length;i++)
dec.push(Base64.decode(b64[i]));
if(!dec.join().includes('http')){
for(i=0;i<dec.length;i++)
dec[i] = Base64.decode(dec[i]);
}
for(i=0;i<dec.length;i++){
if(dec[i].includes('http')){
var splitLink = dec[i].split(new RegExp('[' + separators.join('') + ']', 'g'));
for(var m=0;m<splitLink.length;m++){
if(splitLink[m].includes('http')){
splitLink[m] = '<a href="'+splitLink[m]+'" style="color:green; text-decoration: underline;" target="_blank">'+splitLink[m]+'</a>'
}else{
splitLink[m] = '<strong>'+splitLink[m]+'</strong>'
}
}
dec[i] = splitLink.join(" ");
}
}
$('.article-extra-value table').append('<tr><th scope="row">🔓 Base64 Dec</th><td><span>'+dec.join('<br>')+'</span></td></tr>' );
}
if(knum != -1){
$('.article-extra-value table').append('<tr><th scope="row">🔓 Key Dec</th><td><span>'+Base64.decode($('.article-extra-value>table tr:eq('+knum+') span').text())+'</span></td></tr>' );
}