ImgTunnel

ImgTunnel is a secure image CDN system that allows users to upload images and protects access to them. Only authorized domains can access uploaded content.

🔐 Features

• Secure image upload system via upload.php
• Protected image serving with domain verification (serve.php)
• Organized folder structure with separation between public and protected files
• Environment configuration using .env for sensitive data
• Simple UI via test.html for image upload testing

📁 Folder Structure

IMAGE\_CDN\_ALL\_IMAGES/
├── uploads/                 # Public images (if needed)
├── uploads\_protected/      # Protected, non-public images
├── .env                    # Environment variables (DB credentials)
├── db.php                  # DB connection using env
├── index.php               # Entry or redirect page (optional)
├── serve.php               # Serves images with domain checks
├── test.html               # Basic frontend for image upload
├── upload.php              # Handles image upload securely

🛠 Setup Instructions

1. Clone the repository:

git clone https://github.com/yourusername/imgtunnel.git
cd imgtunnel

2. Setup .env file:

Create a .env file at the root:

DB_HOST=localhost
DB_USER=root
DB_PASSWORD=
DB_NAME=image_cdn

3. Create MySQL database:

Create a database called image_cdn and a table allowed_domains:

CREATE DATABASE image_cdn;
USE image_cdn;
CREATE TABLE allowed_domains (
    id INT AUTO_INCREMENT PRIMARY KEY,
    domain VARCHAR(255) NOT NULL
);
INSERT INTO allowed_domains (domain) VALUES ('localhost'),('yourdomain.com');

4. Place the project in your XAMPP htdocs folder:

C:\xampp\htdocs\IMG_CDN_ALL_IMAGES\

5. Start XAMPP (Apache & MySQL) and visit:

http://localhost/IMAGE_CDN_ALL_IMAGES/test.html

🔒 Domain Protection

Only requests from allowed domains (defined in DB) can access protected images through serve.php.

📷 Upload and Serve Example

Upload: Send a POST request to:

http://localhost/IMAGE_CDN_ALL_IMAGES/upload.php

Access: Use serve.php with query param:

http://localhost/IMAGE_CDN_ALL_IMAGES/serve.php?file=your_image_name.png

If the domain is not allowed, it will return "Access denied".

📃 License

This project is licensed under the MIT License.

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Made with 🔐 by ImgTunnel