Ocx File Download Apr 2026

// OCX download routes app.use('/api', ocxRoutes);

// Initialize downloader when page loads document.addEventListener('DOMContentLoaded', () => new OCXDownloader(); ); </script> </body> </html> // app.js const express = require('express'); const cors = require('cors'); const path = require('path'); const ocxRoutes = require('./routes/ocxDownload'); const app = express(); const PORT = process.env.PORT || 3000;

// Check if file exists if (!fs.existsSync(filePath)) return res.status(404).json( error: 'OCX file not found' ); ocx file download

async init() await this.loadFileList(); async loadFileList() const fileListDiv = document.getElementById('fileList'); try const response = await fetch(`$this.apiBase/ocx-files`); if (!response.ok) throw new Error('Failed to load file list'); const files = await response.json(); if (files.length === 0) fileListDiv.innerHTML = '<div class="status info">No OCX files available</div>'; return; fileListDiv.innerHTML = files.map(file => this.createFileItem(file)).join(''); // Attach download handlers files.forEach(file => const btn = document.getElementById(`download-$this.sanitizeId(file.name)`); if (btn) btn.addEventListener('click', () => this.downloadFile(file.name)); ); catch (error) console.error('Error loading files:', error); fileListDiv.innerHTML = '<div class="status error">Error loading file list</div>'; createFileItem(file) Modified: $date</div> </div> <button id="download-$this.sanitizeId(file.name)">Download</button> </div> `; async downloadFile(filename) const statusDiv = document.getElementById('status'); const downloadBtn = document.querySelector(`#download-$this.sanitizeId(filename)`); // Disable button during download if (downloadBtn) downloadBtn.disabled = true; downloadBtn.textContent = 'Downloading...'; this.showStatus('Downloading...', 'info'); try const response = await fetch(`$this.apiBase/download-ocx/$encodeURIComponent(filename)`); if (!response.ok) 'Download failed'); // Get file size from headers const contentLength = response.headers.get('content-length'); let downloaded = 0; // Create readable stream for progress tracking const reader = response.body.getReader(); const chunks = []; while (true) const done, value = await reader.read(); if (done) break; chunks.push(value); downloaded += value.length; if (contentLength) const progress = (downloaded / parseInt(contentLength)) * 100; this.updateProgress(progress); // Combine chunks into blob const blob = new Blob(chunks); // Trigger download const url = window.URL.createObjectURL(blob); const a = document.createElement('a'); a.href = url; a.download = filename; document.body.appendChild(a); a.click(); document.body.removeChild(a); window.URL.revokeObjectURL(url); this.showStatus(`✅ $filename downloaded successfully!`, 'success'); this.updateProgress(0); catch (error) console.error('Download error:', error); this.showStatus(`❌ Error: $error.message`, 'error'); finally if (downloadBtn) downloadBtn.disabled = false; downloadBtn.textContent = 'Download'; setTimeout(() => this.hideProgress(), 2000); updateProgress(percent) hideProgress() const progressBar = document.querySelector('.progress-bar'); if (progressBar) progressBar.remove(); showStatus(message, type) const statusDiv = document.getElementById('status'); statusDiv.textContent = message; statusDiv.className = `status $type`; statusDiv.style.display = 'block'; if (type === 'success') setTimeout(() => statusDiv.style.display = 'none'; , 5000); sanitizeId(str) return str.replace(/[^a-zA-Z0-9]/g, '-'); escapeHtml(str) const div = document.createElement('div'); div.textContent = str; return div.innerHTML;

<h3>Available OCX Files</h3> <div id="fileList" class="file-list"> <div class="status info" style="display: block;">Loading available files...</div> </div>

fileStream.on('error', (err) => console.error('Download error:', err); res.status(500).json( error: 'Download failed' ); ); ); // OCX download routes app

module.exports = router; <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>OCX File Download</title> <style> body font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; background: #f5f5f5; .container background: white; border-radius: 8px; padding: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); .file-list margin: 20px 0; .file-item display: flex; justify-content: space-between; align-items: center; padding: 10px; border: 1px solid #ddd; margin-bottom: 10px; border-radius: 4px; background: #fafafa; .file-info flex-grow: 1; .file-name font-weight: bold; color: #333; .file-meta font-size: 12px; color: #666; margin-top: 4px; button background: #007bff; color: white; border: none; padding: 8px 16px; border-radius: 4px; cursor: pointer; transition: background 0.3s; button:hover background: #0056b3; button:disabled background: #ccc; cursor: not-allowed; .progress-bar width: 100%; height: 4px; background: #e0e0e0; border-radius: 2px; overflow: hidden; margin-top: 8px; .progress-fill width: 0%; height: 100%; background: #28a745; transition: width 0.3s; .status margin-top: 20px; padding: 10px; border-radius: 4px; display: none; .status.success background: #d4edda; color: #155724; border: 1px solid #c3e6cb; .status.error background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; .status.info background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; .warning background: #fff3cd; color: #856404; padding: 12px; border-radius: 4px; margin-bottom: 20px; border-left: 4px solid #ffc107; </style> </head> <body> <div class="container"> <h2>OCX Component Download</h2> <div class="warning"> <strong>⚠️ Security Notice:</strong> OCX files are executable components. Only download from trusted sources. Verify file signatures before installation. </div>

// Stream the file const fileStream = fs.createReadStream(filePath); fileStream.pipe(res);

// Middleware app.use(cors()); app.use(express.json()); app.use(express.static('public')); </div> // Stream the file const fileStream = fs

fs.readdir(ocxDir, (err, files) => if (err) return res.status(500).json( error: 'Unable to list files' );

res.json(ocxFiles); ); );

// Security: Validate filename to prevent path traversal const safeName = path.basename(filename); if (!safeName.endsWith('.ocx')) return res.status(400).json( error: 'Invalid file type' );

// Optional: Get list of available OCX files router.get('/ocx-files', (req, res) => const ocxDir = path.join(__dirname, '../protected/ocx_files');

regsvr32 /u filename.ocx This feature provides a complete, secure OCX file download solution with progress tracking, error handling, and user-friendly interface.