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Bilibili 港澳台, 解除区域限制
Ajankohdalta
// ==UserScript==
// @name Bilibili 港澳台
// @namespace http://kghost.info/
// @version 0.6
// @description: Remove area restriction
// @description:zh-CN 解除区域限制
// @supportURL https://github.com/kghost/bilibili-area-limit
// @author zealot0630
// @include https://www.bilibili.com/*
// @run-at document-start
// @description Bilibili 港澳台, 解除区域限制
// ==/UserScript==
const url_status = [
/^https:\/\/bangumi\.bilibili\.com\/view\/web_api\/season\/user\/status\?.*/,
/^https:\/\/api\.bilibili\.com\/pgc\/view\/web\/season\/user\/status\?.*/,
];
const url_play = /^https:\/\/api\.bilibili\.com\/pgc\/player\/web\/playurl\?.*/;
const url_replace_www = /^https:\/\/www\.bilibili\.com\//;
const url_replace_www_to = {
'hk': 'https://bilibili-www.kghost.info/',
'tw': 'https://bilibili-tw-www.kghost.info/',
};
const url_replace = /^https:\/\/api\.bilibili\.com\//;
const url_replace_to = [
[/僅.*港.*地區/, 'https://bilibili-api.kghost.info/'],
[/僅.*台.*地區/, 'https://bilibili-tw-api.kghost.info/'],
];
(function (XMLHttpRequest) {
class ClassHandler {
constructor(proxy) {
this.proxy = proxy;
}
construct(target, args) {
const obj = new target(...args);
return new Proxy(obj, new this.proxy(obj));
}
}
const ProxyGetTarget = Symbol('ProxyGetTarget');
const ProxyGetHandler = Symbol('ProxyGetHandler');
class ObjectHandler {
constructor(target) {
this.target = target;
this.log = false;
}
get(target, prop, receiver) {
if (target.hasOwnProperty(prop)) {
return Reflect.get(target, prop, receiver);
} else if (prop == ProxyGetTarget) {
return target;
} else if (prop == ProxyGetHandler) {
return this;
} else {
const value = target[prop];
if (typeof value == 'function') return new Proxy(value, new FunctionHandler(value));
return value;
}
}
set(target, prop, value) {
return Reflect.set(target, prop, value);
}
}
class FunctionHandlerBase extends ObjectHandler {
apply(target, thisArg, argumentsList) {
const realTarget = thisArg[ProxyGetTarget];
if (!realTarget) throw new Error('illegal invocations');
return this.call(this.target, thisArg, realTarget, argumentsList);
}
}
class FunctionHandler extends FunctionHandlerBase {
call(fn, proxy, target, argumentsList) {
fn.apply(target, argumentsList);
}
}
class EventTargetHandler extends ObjectHandler {
constructor(target) {
super(target);
this.listeners = {};
}
getListeners(event) {
if (!this.listeners.hasOwnProperty(event)) this.listeners[event] = new Map();
return this.listeners[event];
}
get(target, prop, receiver) {
if (prop === 'addEventListener') {
return new Proxy(
target.addEventListener,
new this.addEventListener(target.addEventListener)
);
} else if (prop === 'removeEventListener') {
return new Proxy(
target.removeEventListener,
new this.removeEventListener(target.removeEventListener)
);
} else return super.get(target, prop, receiver);
}
}
EventTargetHandler.prototype.addEventListener = class extends FunctionHandlerBase {
call(fn, proxy, realTarget, argumentsList) {
const event = argumentsList[0];
const listener = argumentsList[1];
const bridge = listener.bind(proxy);
argumentsList[1] = bridge;
proxy[ProxyGetHandler].getListeners(event).set(listener, bridge);
return fn.apply(realTarget, argumentsList);
}
};
EventTargetHandler.prototype.removeEventListener = class extends FunctionHandlerBase {
call(fn, proxy, realTarget, argumentsList) {
const event = argumentsList[0];
const listener = argumentsList[1];
const cache = proxy[ProxyGetHandler].getListeners(event);
if (cache.has(listener)) {
argumentsList[1] = cache.get(listener);
cache.delete(listener);
}
return fn.apply(realTarget, argumentsList);
}
};
class XhrHandler extends EventTargetHandler {
constructor(target) {
super(target);
this.overrideResponse = false;
this.overrideResponseValue = null;
}
get(target, prop, receiver) {
if (prop === 'open') {
return new Proxy(target.open, new this.open(target.open));
} else if (prop === 'response' && this.overrideResponse) {
console.log("BAL: Return hooked area limit")
return this.overrideResponseValue;
} else if (prop === 'responseText' && this.overrideResponse) {
console.log("BAL: Return hooked area limit")
return this.overrideResponseValue;
} else {
return super.get(target, prop, receiver);
}
}
}
let limited = false;
XhrHandler.prototype.open = class extends FunctionHandlerBase {
call(fn, proxy, realTarget, argumentsList) {
const method = argumentsList[0];
const url = argumentsList[1];
if (method === 'GET') {
if (limited && url.match(url_play)) {
for (const [match, to] of url_replace_to) {
if (document.title.match(match)) {
argumentsList[1] = url.replace(url_replace, to);
console.log(`BAL: playurl via proxy ${to}.`)
break;
}
}
} else if ((function () {
for (const status in url_status) {
if (url.match(status)) return true;
}
})()) {
realTarget.addEventListener('readystatechange', () => {
if (realTarget.readyState === 4 && realTarget.status === 200) {
const status = JSON.parse(realTarget.response);
if (status && status.result && status.result.area_limit === 1) {
status.result.area_limit = 0;
limited = true;
console.log("BAL: Hook area limit")
proxy[ProxyGetHandler].overrideResponse = true;
proxy[ProxyGetHandler].overrideResponseValue = JSON.stringify(
status
);
}
}
});
}
}
return fn.apply(realTarget, argumentsList);
}
};
unsafeWindow.XMLHttpRequest = new Proxy(
XMLHttpRequest, new ClassHandler(XhrHandler)
);
window.addEventListener('load', () => {
if (document.querySelector('div.error-body')) {
// try load via proxy
console.log("BAL: Load failed, try use proxy")
for (const loc in url_replace_www_to) {
const xhr = new XMLHttpRequest();
const url = window.location.href.replace(
url_replace_www, url_replace_www_to[loc]
);
xhr.open('HEAD', url);
xhr.onreadystatechange = function () {
if (this.readyState === xhr.DONE && this.status === 204) {
console.log(`BAL: Redirected to ${loc}.`)
window.location = xhr.getResponseHeader('X-Location');
}
};
xhr.send();
}
}
});
})(XMLHttpRequest);