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Extract CloudLab node table and generate SSH config
// ==UserScript==
// @name CloudLab SSH Config Generator
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Extract CloudLab node table and generate SSH config
// @author Claude & MirageTurtle
// @match https://www.cloudlab.us/status.php?uuid=*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// Add a button to trigger the export
function addExportButton() {
// Check if table exists
const table = document.getElementById('listview_table');
if (!table) return;
// Check if button already exists
if (document.getElementById('ssh-config-export-btn')) return;
// Create button
const button = document.createElement('button');
button.id = 'ssh-config-export-btn';
button.className = 'btn btn-success btn-xs';
button.style.marginLeft = '10px';
button.textContent = 'Export SSH Config';
button.onclick = generateSSHConfig;
// Find a good place to insert the button (next to other buttons)
const refreshButton = document.getElementById('refresh_button');
if (refreshButton) {
refreshButton.parentNode.insertBefore(button, refreshButton.nextSibling);
} else {
// Fallback: insert at the top of the list view
const listview = document.getElementById('listview');
if (listview) {
listview.insertBefore(button, listview.firstChild);
}
}
}
function generateSSHConfig() {
const table = document.getElementById('listview_table');
if (!table) {
alert('Table not found!');
return;
}
const tbody = table.querySelector('tbody');
if (!tbody) {
alert('Table body not found!');
return;
}
const rows = tbody.querySelectorAll('tr');
if (rows.length === 0) {
alert('No data found in table!');
return;
}
let configContent = '# CloudLab\n';
configContent += 'host node*\n';
configContent += ' user root\n';
configContent += ' identityfile ~/.ssh/cloudlab.pub\n';
configContent += ' IdentitiesOnly yes\n';
configContent += '\n';
// Extract data from each row
rows.forEach(row => {
const clientIdCell = row.querySelector('td[name="client_id"]');
const sshUrlCell = row.querySelector('td[name="sshurl"]');
if (clientIdCell && sshUrlCell) {
const clientId = clientIdCell.textContent.trim();
// Extract hostname from SSH URL
// Format: ssh://[email protected]:22/
// or: ssh [email protected]
const sshLink = sshUrlCell.querySelector('a');
let hostname = '';
if (sshLink) {
const href = sshLink.getAttribute('href');
const text = sshLink.textContent.trim();
// Try to extract from href (ssh://user@hostname:port/)
if (href && href.startsWith('ssh://')) {
const match = href.match(/ssh:\/\/[^@]+@([^:\/]+)/);
if (match) {
hostname = match[1];
}
}
// Fallback: extract from text (ssh user@hostname)
if (!hostname && text) {
const match = text.match(/ssh\s+[^@]+@(\S+)/);
if (match) {
hostname = match[1];
}
}
}
// Another fallback: try to get from the node_id cell
if (!hostname) {
const nodeIdCell = row.querySelector('td[name="node_id"] a');
if (nodeIdCell) {
hostname = nodeIdCell.textContent.trim();
}
}
if (hostname) {
configContent += `host ${clientId}\n`;
configContent += ` hostname ${hostname}\n`;
}
}
});
// Download the config file
downloadFile('ssh_config_cloudlab', configContent);
}
function downloadFile(filename, content) {
const blob = new Blob([content], { type: 'text/plain' });
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = filename;
document.body.appendChild(a);
a.click();
window.URL.revokeObjectURL(url);
document.body.removeChild(a);
}
// Initialize: add button when page loads
function init() {
// Wait for the table to be loaded
const observer = new MutationObserver((mutations, obs) => {
const table = document.getElementById('listview_table');
if (table) {
addExportButton();
// Don't disconnect observer in case table is reloaded
}
});
observer.observe(document.body, {
childList: true,
subtree: true
});
// Try to add button immediately if table already exists
addExportButton();
}
// Run when DOM is ready
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
// Also add button when tab is switched
document.addEventListener('click', function(e) {
if (e.target && e.target.id === 'show_listview_tab') {
setTimeout(addExportButton, 500);
}
});
})();