A helper script to replicate cookies and localStorage data into another browser for the opened webpage
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// ==UserScript==
// @name Replicate Cookies and LocalStorage
// @namespace Azazar's Scripts
// @match *://*/*
// @grant GM_registerMenuCommand
// @grant GM_openInTab
// @grant GM_setClipboard
// @run-at document-idle
// @license MIT
// @version 1.1
// @description A helper script to replicate cookies and localStorage data into another browser for the opened webpage
// ==/UserScript==
(function() {
'use strict';
// Function to create a cookie string
function createCookieString(name, value, domain, path, expires) {
let cookieString = `document.cookie = "${name}=${value};`;
if (domain) {
cookieString += ` domain=${domain};`;
}
if (path) {
cookieString += ` path=${path};`;
}
if (expires) {
cookieString += ` expires=${expires.toUTCString()};`;
}
cookieString += '";';
return cookieString;
}
// Function to extract a specific attribute from the cookie string
function getCookieAttribute(cookie, attribute) {
const regex = new RegExp(`${attribute}=([^;]+)`);
const match = cookie.match(regex);
return match ? match[1] : null;
}
// Function to generate the script for setting cookies and localStorage
function generateScript() {
// Get all cookies
const cookies = document.cookie.split('; ');
// Generate the JavaScript code for setting cookies
let cookieScript = '';
cookies.forEach(cookie => {
const [nameValue, ...attributes] = cookie.split(';').map(attr => attr.trim());
const [name, value] = nameValue.split('=');
const domain = getCookieAttribute(attributes.join(';'), 'domain');
const path = getCookieAttribute(attributes.join(';'), 'path');
const expires = getCookieAttribute(attributes.join(';'), 'expires') ? new Date(getCookieAttribute(attributes.join(';'), 'expires')) : null;
if (name && value !== undefined) {
cookieScript += createCookieString(name, value, domain, path, expires) + '\n';
}
});
// Get all localStorage items
let localStorageScript = '';
for (let i = 0; i < localStorage.length; i++) {
const key = localStorage.key(i);
const value = localStorage.getItem(key);
localStorageScript += `localStorage.setItem(${JSON.stringify(key)}, ${JSON.stringify(value)});\n`;
}
// Combine cookie and localStorage scripts
return cookieScript + localStorageScript;
}
// Function to open a new tab with the script
function openScriptTab() {
const completeScript = generateScript();
// Create a new HTML document with the generated script
const htmlContent = `
<!DOCTYPE html>
<html>
<head>
<title>Replicate Cookies and LocalStorage</title>
<link rel="stylesheet" href="https://unpkg.com/mvp.css">
<style>
#message {
visibility: hidden;
min-width: 250px;
margin-left: -125px;
background-color: #333;
color: #fff;
text-align: center;
border-radius: 2px;
padding: 16px;
position: fixed;
z-index: 1;
left: 50%;
bottom: 30px;
font-size: 17px;
}
#message.show {
visibility: visible;
animation: fadein 0.5s, fadeout 0.5s 2.5s;
}
@keyframes fadein {
from {bottom: 0; opacity: 0;}
to {bottom: 30px; opacity: 1;}
}
@keyframes fadeout {
from {bottom: 30px; opacity: 1;}
to {bottom: 0; opacity: 0;}
}
</style>
</head>
<body>
<main>
<h1>Replicate Cookies and LocalStorage</h1>
<p>Copy the following script and paste it into the console of another browser to set cookies and localStorage items.</p>
<pre><code id="scriptCode">${completeScript}</code></pre>
<button id="copyButton">Copy to Clipboard</button>
<div id="message">Script copied to clipboard!</div>
</main>
<script>
document.getElementById('copyButton').addEventListener('click', () => {
const scriptCode = document.getElementById('scriptCode').innerText;
navigator.clipboard.writeText(scriptCode).then(() => {
const message = document.getElementById('message');
message.classList.add('show');
setTimeout(() => {
message.classList.remove('show');
}, 3000);
}, err => {
alert('Failed to copy script: ', err);
});
});
</script>
</body>
</html>
`;
// Create a Blob with the HTML content
const blob = new Blob([htmlContent], { type: 'text/html' });
const url = URL.createObjectURL(blob);
// Open a new tab with the Blob URL using GM_openInTab
GM_openInTab(url, { active: true, insert: true });
}
// Function to copy the script to the clipboard
function copyScriptToClipboard() {
const completeScript = generateScript();
GM_setClipboard(completeScript);
const message = document.createElement('div');
message.id = 'message';
message.textContent = 'Script copied to clipboard!';
document.body.appendChild(message);
message.classList.add('show');
setTimeout(() => {
message.classList.remove('show');
document.body.removeChild(message);
}, 3000);
}
// Register the userscript commands
GM_registerMenuCommand('Open Script Tab', openScriptTab);
GM_registerMenuCommand('Copy Script to Clipboard', copyScriptToClipboard);
})();