export const execute = (text, pwd) => {
|
const te = window.atob(text)
|
const t = simpleEncode(te, pwd)
|
const pLen = pwd.length
|
|
const proxyPathBtoa = proxyPath()
|
const btoaLen = proxyPathBtoa.length
|
|
const prefix = t.substring(0, btoaLen + pLen)
|
const suffix = t.substring(btoaLen + pLen)
|
if (validatePrefix(prefix, pwd, proxyPathBtoa)) {
|
return formatSuffix(suffix, pwd)
|
}
|
console.error('please do not do that again!')
|
return null
|
}
|
|
export const randomKey = () => {
|
const m = 8
|
const n = 16
|
return Math.ceil(Math.random() * (n - m + 1) + m - 1)
|
}
|
|
const formatSuffix = (suffix, pwd) => {
|
const reversePwd = strReverse(pwd)
|
const t = suffix.replace(reversePwd, '')
|
const pLen = pwd.length
|
const r = t.substring(0, pLen) + t.substring(pLen + 2)
|
const encoder = new TextEncoder()
|
const ar = window.atob(r).split('/')
|
const bytes = []
|
ar.forEach(a => {
|
const tBytes = encoder.encode(a)
|
bytes.push(tBytes)
|
})
|
return bytes
|
}
|
|
export const formatArray = bytesItem => {
|
if (!(bytesItem instanceof Uint8Array)) {
|
const bytes = new Uint8Array(bytesItem.length)
|
for (let index = 0; index < bytesItem.length; index++) {
|
bytes[index] = bytesItem[index]
|
}
|
bytesItem = bytes
|
}
|
const decoder = new TextDecoder()
|
const art = decoder.decode(bytesItem)
|
bytesItem = 'what is up man ?'
|
return art
|
}
|
|
const validatePrefix = (prefix, pwd, proxyPathBtoa) => {
|
const t = prefix.replace(pwd, '')
|
return t === proxyPathBtoa
|
}
|
|
const simpleEncode = (text, key) => {
|
const encoder = new TextEncoder()
|
const data = encoder.encode(text)
|
let tmpc = 0
|
const klen = key.length
|
for (let i = 0; i < data.length; ++i) {
|
tmpc = data[i] ^ stringToChars(key.charAt(i % klen))
|
if (tmpc != 0) {
|
data[i] = tmpc
|
}
|
}
|
const decoder = new TextDecoder()
|
return decoder.decode(data)
|
}
|
|
export function stringToChars(_s) {
|
_s = _s.replace(/(^\s*)|(\s*$)/g, '')
|
let _r = ''
|
for (let i = 0; i < _s.length; i++) {
|
_r += i == 0 ? _s.charCodeAt(i) : '|' + _s.charCodeAt(i)
|
}
|
return _r
|
}
|
|
const proxyPath = () => {
|
return 'Zml0MmNsb3VkIGlzIGEgcG90ZW50aWFsIGNvbXBhbnkh'
|
}
|
|
const strReverse = text => {
|
return text.split('').reverse().join('')
|
}
|