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Automatically redirects to the challenge page when CloudFlare protection fails, improving browsing experience on linux.do
// ==UserScript==
// @name LINUX.DO CloudFlare Challenge Bypass
// @name:zh-CN LINUX.DO CloudFlare 5秒盾自动跳转
// @namespace https://github.com/utags
// @homepageURL https://github.com/utags/userscripts#readme
// @supportURL https://github.com/utags/userscripts/issues
// @version 0.3.2
// @description Automatically redirects to the challenge page when CloudFlare protection fails, improving browsing experience on linux.do
// @description:zh-CN 当 CloudFlare 5秒盾检测失败时，自动跳转到 challenge 页面，提升 linux.do 的浏览体验
// @author Pipecraft
// @license MIT
// @match https://linux.do/*
// @icon https://wsrv.nl/?w=64&h=64&url=https%3A%2F%2Ft3.gstatic.com%2FfaviconV2%3Fclient%3DSOCIAL%26type%3DFAVICON%26fallback_opts%3DTYPE%2CSIZE%2CURL%26url%3Dhttps%3A%2F%2Flinux.do%26size%3D64
// @grant GM_registerMenuCommand
// ==/UserScript==
//
;(() => {
'use strict'
var CONFIG = {
ERROR_TEXTS: [
'403 error',
'\u8BE5\u56DE\u5E94\u662F\u5F88\u4E45\u4EE5\u524D\u521B\u5EFA\u7684',
'reaction was created too long ago',
'\u6211\u4EEC\u65E0\u6CD5\u52A0\u8F7D\u8BE5\u8BDD\u9898',
'You are not allowed to react',
],
DIALOG_SELECTOR: '.dialog-body',
CHALLENGE_PATH: '/challenge',
DEBUG: false,
MENU_TEXT: '\u624B\u52A8\u89E6\u53D1 Challenge \u8DF3\u8F6C',
}
var log = (...args) => {
if (CONFIG.DEBUG) {
console.log('[LINUX.DO Auto Challenge]', ...args)
}
}
function isChallengePage() {
return globalThis.location.pathname.startsWith(CONFIG.CHALLENGE_PATH)
}
function isNotFoundPage() {
return Boolean(document.querySelector('.page-not-found'))
}
function getRedirectParamUrl() {
try {
const sp = new URLSearchParams(globalThis.location.search)
const raw = sp.get('redirect')
if (!raw) return void 0
const url = new URL(raw, globalThis.location.origin)
if (url.origin !== globalThis.location.origin) return void 0
return url.href
} catch (e) {
return void 0
}
}
var NOT_FOUND_REDIRECT_GUARD_KEY = 'linux_do_auto_challenge_nf_guard'
function getNotFoundRedirectGuardTs() {
try {
const raw = sessionStorage.getItem(NOT_FOUND_REDIRECT_GUARD_KEY)
const n = raw ? Number(raw) : 0
return Number.isFinite(n) ? n : 0
} catch (e) {
return 0
}
}
function setNotFoundRedirectGuardTs(ts) {
try {
sessionStorage.setItem(NOT_FOUND_REDIRECT_GUARD_KEY, String(ts))
} catch (e) {}
}
function redirectFromNotFoundPage() {
const fallback = ''.concat(globalThis.location.origin, '/')
const target = getRedirectParamUrl() || fallback
const now = Date.now()
const guardTs = getNotFoundRedirectGuardTs()
if (guardTs && now - guardTs < 5e3) {
return
}
setNotFoundRedirectGuardTs(now)
if (target === globalThis.location.href) {
globalThis.location.replace(fallback)
return
}
globalThis.location.replace(target)
}
function isChallengeFailure() {
if (isChallengePage()) {
return false
}
try {
const dialogElement = document.querySelector(CONFIG.DIALOG_SELECTOR)
if (!dialogElement) return false
const text = dialogElement.textContent || ''
return CONFIG.ERROR_TEXTS.some((errorText) => text.includes(errorText))
} catch (error) {
log('\u68C0\u6D4B\u5931\u8D25\u9875\u9762\u65F6\u51FA\u9519:', error)
return false
}
}
function redirectToChallenge() {
try {
if (isChallengePage()) return
const redirectUrl = ''
.concat(CONFIG.CHALLENGE_PATH, '?redirect=')
.concat(encodeURIComponent(globalThis.location.href))
log('\u91CD\u5B9A\u5411\u5230:', redirectUrl)
globalThis.location.href = redirectUrl
} catch (error) {
log('\u91CD\u5B9A\u5411\u65F6\u51FA\u9519:', error)
}
}
function checkAndRedirect(observer) {
if (isChallengeFailure()) {
if (observer) observer.disconnect()
redirectToChallenge()
return true
}
return false
}
function manualTrigger() {
log('\u624B\u52A8\u89E6\u53D1 Challenge \u8DF3\u8F6C')
if (isChallengePage()) {
alert('\u5DF2\u5728 Challenge \u9875\u9762\uFF0C\u65E0\u9700\u8DF3\u8F6C')
return
}
redirectToChallenge()
}
function initScript() {
log('\u521D\u59CB\u5316\u811A\u672C')
if (isChallengePage()) {
if (isNotFoundPage()) {
redirectFromNotFoundPage()
return
}
log(
'\u5DF2\u5728 challenge \u9875\u9762\uFF0C\u4E0D\u6267\u884C\u811A\u672C'
)
return
}
if (checkAndRedirect()) return
try {
const observer = new MutationObserver((mutations, obs) => {
if (isChallengePage()) {
if (isNotFoundPage()) {
redirectFromNotFoundPage()
}
} else {
checkAndRedirect(obs)
}
})
observer.observe(document.body, {
childList: true,
subtree: true,
characterData: true,
})
log('DOM \u89C2\u5BDF\u5668\u5DF2\u542F\u52A8')
} catch (error) {
log('\u542F\u52A8 DOM \u89C2\u5BDF\u5668\u65F6\u51FA\u9519:', error)
}
try {
GM_registerMenuCommand(CONFIG.MENU_TEXT, manualTrigger)
log('\u83DC\u5355\u547D\u4EE4\u5DF2\u6CE8\u518C')
} catch (error) {
log('\u6CE8\u518C\u83DC\u5355\u547D\u4EE4\u65F6\u51FA\u9519:', error)
}
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', initScript)
} else {
initScript()
}
})()