LinkedIn browser extension sniffing exposer

// See https://github.com/dandrews/nefarious-linkedin
// All the extensions seem suspicious by nature, they all seem to be recruitment and sales focused

function decode(str) {
    if (!str) {
        return false;
    }
    var mapping = {
        'r': 'a',
        'O': 'a',
        'x': 'b',
        'L': 'b',
        'G': 'c',
        'I': 'C',
        'w': 'd',
        'v': 'd',
        'f': 'e',
        'P': 'E',
        'B': 'F',
        'H': 'f',
        'U': 'g',
        'k': 'G',
        'F': 'h',
        'n': 'H',
        'T': 'i',
        'D': 'i',
        'u': 'k',
        'd': 'l',
        'a': 'L',
        'h': 'm',
        'A': 'M',
        'X': 'n',
        'W': 'o',
        'c': 'O',
        'o': 'P',
        'S': 'p',
        'M': 'q',
        'l': 'r',
        's': 'r',
        'j': 'S',
        'C': 's',
        'Y': 't',
        'y': 't',
        'R': 'u',
        'V': 'u',
        'K': 'v',
        'Q': 'W',
        'm': 'x',
        'Z': 'y',
        'i': 'z',
    };
    var decoded = '';
    str.split('').forEach(function(char) {
        if (mapping[char]) {
            decoded += mapping[char];
        } else {
            decoded += char;
        }
    });
    return decoded;
}
var a = [];
var parsed;
try {
    parsed = JSON.parse(atob(localStorage.getItem('C_C_M')));
} catch (error) {}
if (parsed !== undefined) {
    parsed.Metadata.ext.forEach(function(ext, val) {
        a.push(decode(ext.name));
    });
}
console.log(a.join('\n'));