Matt_daemon is a custom daemon process implemented in C++. It is designed to run as a background service with root privileges, handling network connections, logging activities, and ensuring only one instance runs at a time.
- Daemon Process: Runs in the background as a daemon, ensuring only one instance is active at any time.
- Root Privileges Required: The program must be executed with root rights.
- Network Listener: Listens on port
4242for incoming connections. - Client Management: Supports up to 3 simultaneous client connections. Attempts to connect more than 3 clients will result in the new connection being refused.
- Signal Handling: Intercepts system signals, logs them, and shuts down gracefully.
- Logging: All actions and events are logged with timestamps in the
/var/log/matt_daemon/matt_daemon.logfile. - Lock Mechanism: Uses a lock file (
/var/lock/matt_daemon.lock) to ensure only one instance of the daemon is running. - Client Interaction: The daemon accepts commands from clients. Sending a "quit" command will shut down the daemon. All other commands are logged.
- Tintin_reporter: A logging utility class that handles log management and formatting.
- C++ Compiler (e.g.,
g++) - Root privileges
To compile the daemon, use the following command:
make To start the daemon, execute:
sudo ./build/Matt_daemonEnsure you run the daemon with sudo or as the root user since it requires root privileges.
To stop the daemon, you can:
- Send the "quit" command from a connected client.
- Send a termination signal (e.g., SIGTERM or SIGINT) to the process.
Logs are stored in:
/var/log/matt_daemon/matt_daemon.logThe log entries include timestamps in the format [DD/MM/YYYY - HH:MM:SS].
To prevent multiple instances, the daemon creates a lock file at:
/var/lock/matt_daemon.lockThis file is deleted when the daemon shuts down.
To connect to the daemon using netcat, open a terminal and run:
nc localhost 4242You can then send commands to the daemon, such as:
quit- Shuts down the daemon.- Any other command will be logged.