BackDoor CLI Chat Server

A secure command-line interface chat server with authentication, private messaging, file transfers, and comprehensive logging.

Features

Core Features

• 🔐 Role-based authentication system (admin/user)
• 💬 Real-time messaging
• 📝 Private messaging system
• 📁 File transfer support (up to 5MB)
• 📊 Comprehensive logging system
• 🛡️ Advanced admin controls

Security Features

• User authentication with access keys
• IP banning system
• User muting capability
• Connection attempt logging
• Maximum login attempts (3)

Admin Commands

• !kick <user> - Kick a user from the chat
• !ban <user> - Ban a user's IP address
• !mute <user> - Mute a user
• !unmute <user> - Unmute a user
• !logs - View recent server logs

User Commands

• !help - Show available commands
• !active - Show active users
• !clear - Clear screen
• !whoami - Show your username and role
• !time - Show server time
• !room - Show current room name
• !pm <user> <message> - Send private message
• !sendfile <user> <filepath> - Send file to user
• !receivefile - Accept pending file transfer
• !quit - Exit chat

Requirements

• Python 3.6+
• No external dependencies required (uses standard library)

Installation

1. Clone the repository:

git clone https://github.com/yourusername/backdoor-chat.git
cd backdoor-chat

2. Make sure you have Python 3.6 or higher installed:

python --version

Usage

Starting the Server

# Basic server start (default port: 55555)
python chat.py --server

# Custom port and room name
python BackDoorChat.py --port 5000 --room hackroom

# Bind to specific IP
python BackDoorChat.py --host 0.0.0.0 --port 5000

Connecting to the Server

Users can connect using standard terminal tools:

nc localhost 55555
# or
telnet localhost 55555

Authentication

Default access keys:

• Admin: backdoor123
• User: user123

File Transfer

The server supports file transfers up to 5MB:

1. Sender: !sendfile username filepath
2. Receiver: !receivefile

Files are automatically renamed with timestamps to prevent conflicts.

Logging System

The server maintains two types of logs in the logs directory:

• chat_YYYYMMDD.log: Chat messages and commands
• events_YYYYMMDD.log: Server events and actions

Logs older than 7 days are automatically cleaned up.

Log Format

// Chat log entry
{
    "timestamp": "2024-01-16T10:15:30.123",
    "type": "message",
    "nickname": "user",
    "message": "Hello everyone!"
}

// Event log entry
{
    "timestamp": "2024-01-16T10:15:00.000",
    "type": "user_connected",
    "details": {
        "nickname": "user",
        "ip": "192.168.1.100",
        "role": "user"
    }
}

Future Features

• End-to-end encryption
• Multiple chat rooms
• Custom user profiles
• File encryption