DirectlinkRobot: Generate Direct Download Links from Telegram

🔗 Directlink Robot

Directlink Robot is a Telegram bot designed to generate direct download links for files, videos, and audios sent to it. The bot uses Cloudflare Workers for serverless deployment, ensuring fast and reliable performance.

🚀 Demo in Telegram: @directlink_robot

✨ Features

• 💬 Responds to the /start command with a welcome message.
• 👥 Supported chat types: private, groups, supergroups.
• 📁 Handles file, video, and audio messages to generate direct download links.
• 🕒 Auto rename unnamed videos with a timestamp.
• 📏 Limits file sizes to a maximum of 20 MiB due to Telegram Bot API constraints.
• 🔐 Utilizes encryption for secure message handling.
• 🌍 Supports CORS for cross-origin requests.

⚙️ Setup

1. 🧩 Clone the Repository

   git clone https://gitlab.com/fr0stb1rd/directlink-robot.git
   cd directlink-robot
   

2. 🔑 Configure Bot Tokens

   Add your bot tokens in the BOT_TOKENS array in the script. You can add multiple tokens separated by a comma.

   const BOT_TOKENS = ["your_bot_token"];
   

3. 🆔 Set the Channel ID

   Set the CHANNEL_ID to the ID of your Telegram channel where the bot will forward messages.

   const CHANNEL_ID = -1000000000;
   

4. ☁️ Deploy to Cloudflare Workers

   • 🛠️ Install the Wrangler CLI.

     npm install -g @cloudflare/wrangler
     

   • 🔐 Login to your Cloudflare account.

     wrangler login
     

   • 🚀 Publish your worker.

     wrangler publish
     

5. 🌐 Set Webhook URL

   Set the webhook URL for your bot using the following format:

   const webhook_url = `https://api.telegram.org/bot<your_bot_token>/setWebhook?url=https://<your_worker_url>/webhook`;
   

   🔄 Replace <your_bot_token> with your bot token and <your_worker_url> with your Cloudflare Worker URL.

⚡️ How It Works

1. ▶️ Start Command

   When a user sends the /start command, the bot responds with a welcome message and instructions.

2. 📦 File Handling

   When a user sends a file, video, or audio, the bot:

   • Forwards the message to the specified channel.
   • Generates a direct download link.
   • Sends the download link to the user.

3. 🔗 Download Links

   The download links are generated using a cipher function to ensure security. 🔒

🛠️ Functions

• 🔐 cipher(textV)
  • Encrypts the given text using a predefined salt.
• 🔓 decipher(textV)
  • Decrypts the given text using the same salt.
• 📨 handleOptions(request)
  • Handles CORS preflight requests.
• 🤖 getBotToken()
  • Retrieves a random bot token from the list of tokens.
• 🎲 generateRandomString(length)
  • Generates a random string of the specified length.
• 🌐 fetchJson(url)
  • Fetches JSON data from the specified URL.
• 📥 downloadFile(message_id)
  • Downloads the file from Telegram using the message ID.
• 🔄 handleUpdate(update)
  • Handles incoming updates from Telegram.

🌍 CORS Headers

The bot includes CORS headers to support cross-origin requests:

const corsHeaders = {
    "Access-Control-Allow-Origin": "*",
    "Access-Control-Allow-Methods": "GET, HEAD, POST, OPTIONS",
    "Access-Control-Allow-Headers": "Content-Type",
};

📸 Screenshots

Image 1	Image 2

💻 Source Code

Soon…

📄 License

You can use, study, share and improve it at your will. Specifically you can redistribute and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.