fwserve 1.0.1

FastAPI firmware file server with upload UI and syslog receiver

FWServe

A FastAPI-based firmware file server that automatically serves .bin files from a configured directory, with a web upload UI and integrated syslog receiver.

Features

• Automatic detection of new .bin files
• RESTful API for listing and downloading files
• Web UI for uploading .bin files
• Integrated syslog server (UDP + TCP)
• Real-time syslog viewer with filtering
• CLI for easy installation as a systemd service
• Runs as a Linux systemd service

Installation

From PyPI

pip install fwserve

From Source

# Clone the repository
git clone https://github.com/yourusername/fwserve.git
cd fwserve

# Install with pip
pip install .

# Or install with development dependencies
pip install -e ".[dev]"

Quick Start

Run in Development Mode

# Run with default settings (port 8080, current directory)
fwserve run

# Run with custom settings
fwserve run --port 8080 --directory /path/to/files --reload

Install as a Service (Linux)

# Install with default settings (requires root)
sudo fwserve install

# Install with custom settings
sudo fwserve install --port 80 --syslog-port 514

# Check service status
fwserve status

# Uninstall the service
sudo fwserve uninstall

API Endpoints

Endpoint	Method	Description
/health	GET	Health check
/files	GET	List available .bin files
/files/{filename}	GET	Download a specific file
/upload	GET	Upload form UI
/upload	POST	Upload a .bin file
/syslog	GET	Real-time syslog viewer UI
/syslog/history	GET	Get recent syslog entries
/syslog/stream	GET	SSE stream of syslog entries

CLI Commands

# Show help
fwserve --help

# Run the server
fwserve run --host 0.0.0.0 --port 8080 --directory ./files

# Install as systemd service (requires root)
sudo fwserve install --port 80 --syslog-port 514

# Check service status
fwserve status

# Uninstall service (requires root)
sudo fwserve uninstall

Configuration

Configuration is done via environment variables:

Server Settings

Variable	Default	Description
FWSERVE_HOST	0.0.0.0	Host to bind to
FWSERVE_PORT	8080	HTTP port to listen on
FWSERVE_DIRECTORY	.	Directory to serve files from
FWSERVE_LOG_LEVEL	INFO	Logging level
FWSERVE_TIMEZONE	America/New_York	Timezone for timestamps

Upload Settings

Variable	Default	Description
FWSERVE_UPLOAD_MAX_BYTES	104857600	Maximum upload size (100MB)

Syslog Settings

Variable	Default	Description
SYSLOG_ENABLE_UDP	true	Enable UDP syslog listener
SYSLOG_ENABLE_TCP	true	Enable TCP syslog listener
SYSLOG_UDP_PORT	5514	UDP port for syslog
SYSLOG_TCP_PORT	5514	TCP port for syslog
SYSLOG_LOG_FILE	<directory>/syslog.log	Path to syslog storage file
SYSLOG_TAIL_SIZE	5000	Number of entries to keep in memory
SYSLOG_HISTORY_LIMIT	500	Max entries returned by history endpoint

Usage Examples

List available files

curl http://localhost:8080/files

Response:

{
  "files": ["firmware_v1.0.bin", "update_v2.1.bin"]
}

Download a file

curl -O http://localhost:8080/files/firmware_v1.0.bin

Upload a file

curl -X POST -F "file=@firmware.bin" http://localhost:8080/upload

Send syslog messages

# UDP
echo "<14>Test message from host1" | nc -u localhost 5514

# TCP
echo "<14>Test message from host1" | nc localhost 5514

Get syslog history with filters

# Get all entries
curl http://localhost:8080/syslog/history

# Filter by host
curl "http://localhost:8080/syslog/history?host=router1"

# Filter by severity and message
curl "http://localhost:8080/syslog/history?severity=err&q=failed"

Running Tests

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest tests/ -v

# Run type checking
mypy src/fwserve/

# Run linter
ruff check src/

Building the Package

# Install build dependencies
pip install build

# Build wheel and sdist
python -m build

# The built packages will be in dist/
ls dist/
# fwserve-1.0.0-py3-none-any.whl
# fwserve-1.0.0.tar.gz

Service Management

After installing with fwserve install:

# Start service
sudo systemctl start fwserve

# Stop service
sudo systemctl stop fwserve

# Restart service
sudo systemctl restart fwserve

# View status
sudo systemctl status fwserve

# View logs
sudo journalctl -u fwserve -f

Security Notes

• Only .bin files are served/uploaded
• Path traversal attacks are blocked
• Service runs as dedicated non-root user (fwserve)
• Systemd security hardening is enabled
• Files directory has restricted write access

Project Structure

fwserve/
├── pyproject.toml       # Package configuration
├── README.md
├── src/
│   └── fwserve/
│       ├── __init__.py
│       ├── app.py           # FastAPI application
│       ├── cli.py           # Click CLI
│       ├── config.py        # Configuration
│       ├── file_watcher.py  # Directory monitoring
│       ├── syslog_parser.py # Syslog message parsing
│       ├── syslog_server.py # UDP/TCP listeners
│       └── syslog_store.py  # File-backed storage
└── tests/
    ├── test_main.py
    └── test_syslog.py