用于监控js对cookie的修改，还可以在修改指定名称的cookie时进入断点
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// ==UserScript==
// @name JS Cookie Monitor/Debugger Hook
// @namespace https://github.com/CC11001100/crawler-js-hook-framework-public
// @version 0.1
// @description 用于监控js对cookie的修改，还可以在修改指定名称的cookie时进入断点
// @author CC11001100
// @match *://*/*
// @run-at document-start
// @grant none
// ==/UserScript==
(() => {
// 用于监控cookie的声明周期
const debuggerOnCookieChange = ["foobar-cookie-name"];
// 使用document.cookie更新cookie，但是cookie新的值和原来的值一样，此时要不要忽略这个事件
const ignoreUpdateButNotChanged = false;
addCookieHook();
function addCookieHook() {
Object.defineProperty(document, "cookie", {
get: () => {
delete document.cookie;
const currentDocumentCookie = document.cookie;
addCookieHook();
return currentDocumentCookie;
},
set: newValue => {
cc11001100_onSetCookie(newValue);
delete document.cookie;
document.cookie = newValue;
addCookieHook();
},
configurable: true
});
}
/**
* 这个方法的前缀起到命名空间的作用，等下调用栈追溯赋值cookie的代码时需要用这个名字作为终结标志
*
* @param newValue
*/
function cc11001100_onSetCookie(newValue) {
const cookiePair = parseSetCookie(newValue);
// 如果过期时间为当前时间之前，则为删除
if (new Date().getTime() >= cookiePair.expires) {
onDeleteCookie(cookiePair.name);
return;
}
const currentCookieMap = getCurrentCookieMap();
// 如果之前已经存在，则是修改
if (currentCookieMap.has(cookiePair.name)) {
onCookieUpdate(cookiePair.name, currentCookieMap.get(cookiePair.name).value, cookiePair.value);
return;
}
// 否则则为添加
onCookieAdd(cookiePair.name, cookiePair.value);
}
/**
* 删除cookie
*
* @param cookieName
*/
function onDeleteCookie(cookieName) {
const valueStyle = "color: black; background: #E50000; font-size: 13px; font-weight: bold;";
const normalStyle = "color: black; background: #FF6766; font-size: 13px;";
const message = [
normalStyle,
now(),
normalStyle,
"JS Cookie Monitor: ",
normalStyle,
"delete cookie, cookieName = ",
valueStyle,
`${cookieName}`,
normalStyle,
`, code location = ${getCodeLocation()}`
];
console.log(genFormatArray(message), ...message);
if (debuggerOnCookieChange.indexOf(cookieName) !== -1) {
debugger;
}
}
/**
* 更新cookie
*
* @param cookieName
* @param oldCookieValue
* @param newCookieValue
*/
function onCookieUpdate(cookieName, oldCookieValue, newCookieValue) {
const cookieValueChanged = oldCookieValue !== newCookieValue;
if (ignoreUpdateButNotChanged && !cookieValueChanged) {
return;
}
const valueStyle = "color: black; background: #FE9900; font-size: 13px; font-weight: bold;";
const normalStyle = "color: black; background: #FFCC00; font-size: 13px;";
const message = [
normalStyle,
now(),
normalStyle,
"JS Cookie Monitor: ",
normalStyle,
"update cookie, name = ",
valueStyle,
`${cookieName}`,
normalStyle,
`, oldValue = `,
valueStyle,
`${oldCookieValue}`,
normalStyle,
`, newValue = `,
valueStyle,
`${newCookieValue}`,
normalStyle,
`, value changed =`,
valueStyle,
`${cookieValueChanged}`,
normalStyle,
`, code location = ${getCodeLocation()}`
];
console.log(genFormatArray(message), ...message);
if (debuggerOnCookieChange.indexOf(cookieName) !== -1) {
debugger;
}
}
/**
* 添加cookie
*
* @param cookieName
* @param cookieValue
*/
function onCookieAdd(cookieName, cookieValue) {
const valueStyle = "color: black; background: #669934; font-size: 13px; font-weight: bold;";
const normalStyle = "color: black; background: #65CC66; font-size: 13px;";
const message = [
normalStyle,
now(),
normalStyle,
"JS Cookie Monitor: ",
normalStyle,
"add cookie, ",
valueStyle,
`${cookieName}`,
normalStyle,
" = ",
valueStyle,
`${cookieValue}`,
normalStyle,
`, code location = ${getCodeLocation()}`
];
console.log(genFormatArray(message), ...message);
if (debuggerOnCookieChange.indexOf(cookieName) !== -1) {
debugger;
}
}
function now() {
return "[" + new Date(new Date().getTime() + 1000 * 60 * 60 * 8).toJSON().replace("T", " ").replace("Z", " ") + "] ";
}
function genFormatArray(messageAndStyleArray) {
const formatArray = [];
for (let i = 0, end = messageAndStyleArray.length / 2; i < end; i++) {
formatArray.push("%c%s");
}
return formatArray.join("");
}
function getCodeLocation() {
const callstack = new Error().stack.split("\n");
while (callstack.length && callstack[0].indexOf("cc11001100") === -1) {
callstack.shift();
}
callstack.shift();
callstack.shift();
return callstack[0].trim();
}
/**
* 将本次设置cookie的字符串解析为容易处理的形式
*
* @param cookieString
* @returns {CookiePair}
*/
function parseSetCookie(cookieString) {
// uuid_tt_dd=10_37476713480-1609821005397-659114; Expires=Thu, 01 Jan 2025 00:00:00 GMT; Path=/; Domain=.csdn.net;
const cookieStringSplit = cookieString.split(";");
const cookieNameValueArray = cookieStringSplit[0].split("=");
const cookieName = decodeURIComponent(cookieNameValueArray[0].trim());
const cookieValue = cookieNameValueArray.length > 1 ? decodeURIComponent(cookieNameValueArray[1].trim()) : "";
const map = new Map();
for (let i = 1; i < cookieStringSplit.length; i++) {
const ss = cookieStringSplit[i].split("=", 2);
const key = ss[0].trim().toLowerCase();
const value = ss.length > 1 ? ss[1].trim() : "";
map.set(key, value);
}
const expires = map.get("expires");
return new CookiePair(cookieName, cookieValue, new Date(expires).getTime())
}
/**
* 获取当前所有已经设置的cookie
*
* @returns {Map<string, CookiePair>}
*/
function getCurrentCookieMap() {
const cookieMap = new Map();
if (!document.cookie) {
return cookieMap;
}
document.cookie.split(";").forEach(x => {
const ss = x.split("=", 2);
const key = decodeURIComponent(ss[0].trim());
const value = ss.length > 1 ? decodeURIComponent(ss[1].trim()) : "";
cookieMap.set(key, new CookiePair(key, value));
});
return cookieMap;
}
class CookiePair {
constructor(name, value, expires) {
this.name = name;
this.value = value;
this.expires = expires;
}
}
})();