JetBra

Add a button on the plugin homepage and click to get the plugin activation code

// ==UserScript==
// @name         JetBra
// @namespace    https://github.com/novice88/jetbra
// @version      5.0
// @license MIT
// @description  Add a button on the plugin homepage and click to get the plugin activation code
// @author       novice.li
// @match        https://plugins.jetbrains.com/*
// @grant        GM_setClipboard
// @grant        GM_addStyle
// @grant        window.onurlchange
// ==/UserScript==

const pemEncodedKey = `-----BEGIN PRIVATE KEY-----
MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQC3p6nBj9mcRpGK
pigPXOB83/PmA9bJr5jsSo3fm5ky67rTP4V79XI9a1t/5asg7XQ5OyulvP0w6tQk
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17M9lCizO9o9dONdHsHfNQi6y9Jcnw==
-----END PRIVATE KEY-----`;


const pemEncodedCrt = `-----BEGIN CERTIFICATE-----
MIIEtTCCAp2gAwIBAgIUDyuccmylba71lZQAQic5TJiAhwwwDQYJKoZIhvcNAQEL
BQAwGDEWMBQGA1UEAwwNSmV0UHJvZmlsZSBDQTAeFw0yMzA5MjkxNDA2MTJaFw0z
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/uYKczZ8DKZu
-----END CERTIFICATE-----`;

function injectStyles() {
    GM_addStyle(`
        .jetbra-button {
            background-color: #04AA6D; border: none; color: white; padding: 8px 24px;
            text-align: center; text-decoration: none; display: inline-block;
            border-radius: 16px; box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
            transition-duration: 0.4s;
            margin-left:5px
        }
        .jetbra-button:hover { background-color: #057e47; color: white; }
    `);
}


async function findElementWithRetry(cssSelector) {
    const maxAttempts = 50;
    for (let attempts = 0; attempts < maxAttempts; attempts++) {
        const element = document.querySelector(cssSelector);
        if (element) {
            return element;
        }
        await new Promise(resolve => setTimeout(resolve, 100));
    }
    throw new Error(`Element with selector '${cssSelector}' not found after ${maxAttempts} attempts.`);
}

function pem2base64(pem) {
    return pem.split('\n').reduce((base64, line) => line.includes("--") ? base64 : base64 + line, '');
}

function arrayBufferToBase64(buffer) {
    return btoa([...new Uint8Array(buffer)].map(b => String.fromCharCode(b)).join(''));
}

function base64ToArrayBuffer(base64) {
    return Uint8Array.from(atob(base64), c => c.charCodeAt(0)).buffer;
}

function genLicenseId() {
    const CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    return Array.from({length: 10}, () => {
        let idx = Math.floor(Math.random() * CHARSET.length);
        return CHARSET[idx];
    }).join('');
}

function buildLicensePartJson(productCode, licenseId,twoYears) {
    let formattedDateTwoYears = '2099-08-01';
    if (twoYears) {
        let futureDateTwoYears = new Date();
        futureDateTwoYears.setFullYear(futureDateTwoYears.getFullYear() + 2);
        formattedDateTwoYears = futureDateTwoYears.toISOString().split('T')[0];
    }

    let fallbackDate = formattedDateTwoYears;
    let paidUpTo = formattedDateTwoYears;

    return JSON.stringify({
        "licenseId": licenseId,
        "licenseeName": "reborn",
        "assigneeName": "reborn",
        "assigneeEmail": "",
        "licenseRestriction": "",
        "checkConcurrentUse": false,
        "products": [{
            code: productCode,
            fallbackDate: fallbackDate,
            paidUpTo: paidUpTo
        }],
        "metadata": "0120230102PPAA013009",
        "hash": "41472961/0:1563609451",
        "gracePeriodDays": 7,
        "autoProlongated": true,
        "isAutoProlongated": true
    });
}

async function addButton() {
    injectStyles();

    let url = window.location.href
    if (!url.startsWith('https://plugins.jetbrains.com/plugin/')) {
        return;
    }

    let pluginId = url.split('/')[4].split('-')[0]
    console.log('pluginId: ' + pluginId);

    let pluginDetail = await fetch('https://plugins.jetbrains.com/api/plugins/' + pluginId).then(r => r.json());

    const parentElement = await findElementWithRetry('.plugin-header__controls-panel > div:first-child');

    if (parentElement.querySelector('.jetbra-button')) {
        return;
    }
    let newElement = document.createElement('div');
    newElement.classList.toggle('wt-col-inline');
    newElement.innerHTML =
        `<div class="customize-btn" style="display: flex; flex-direction: column;white-space: nowrap;">
            <div class="generate-plugin-code" style="display: flex;height: 40px;">
                <button class="jetbra-button" type="button" id="permanentLicense">获取永久激活码</button>
                <button class="jetbra-button" type="button" id="twoYearsLicense">获取两年激活码</button>
            </div>
        </div>`;

    parentElement.appendChild(newElement)

    newElement.addEventListener('click', async (e) => {
        let productCode = pluginDetail?.purchaseInfo?.productCode;
        if (productCode === undefined) {
            window.alert('该插件不是市场付费插件！');
            return;
        }
        let licenseId = genLicenseId()
        let licensePartJson = buildLicensePartJson(productCode, licenseId,e.target.id === "twoYearsLicense")

        let privateKey = await window.crypto.subtle.importKey("pkcs8", base64ToArrayBuffer(pem2base64(pemEncodedKey)), {
            name: "RSASSA-PKCS1-v1_5", hash: "SHA-1",
        }, true, ["sign"]);

        let licensePartBase64 = btoa(unescape(encodeURIComponent(licensePartJson)));
        let sigResultsBase64 = arrayBufferToBase64(await window.crypto.subtle.sign("RSASSA-PKCS1-v1_5", privateKey, new TextEncoder().encode(licensePartJson)));
        let cert_base64 = pem2base64(pemEncodedCrt);

        GM_setClipboard(`${licenseId}-${licensePartBase64}-${sigResultsBase64}-${cert_base64}`, 'text');
        window.alert('激活码已经拷贝到你的剪切板');
    })
}

addButton();
if (window.onurlchange === null) {
    window.addEventListener('urlchange', (ignore) => {
        addButton();
    });
}