[Unit]
Description=DECNET Worker Agent (mTLS)
Documentation=https://github.com/4nt11/DECNET/wiki/SWARM-Mode
After=network-online.target docker.service
Wants=network-online.target
Requires=docker.service

[Service]
Type=simple
User=decnet
Group=decnet
# docker.sock is group-readable by 'docker'; the agent needs it for compose.
SupplementaryGroups=docker
WorkingDirectory=/opt/decnet
EnvironmentFile=-/opt/decnet/.env.local
ExecStart=/opt/decnet/venv/bin/decnet agent --host 0.0.0.0 --port 8765 --agent-dir /etc/decnet/agent

# MACVLAN/IPVLAN management + scapy raw sockets. Granted via ambient caps so
# the process starts unprivileged and keeps only these two bits.
CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_RAW
AmbientCapabilities=CAP_NET_ADMIN CAP_NET_RAW

# Security Hardening
NoNewPrivileges=yes
ProtectSystem=full
ProtectHome=read-only
PrivateTmp=yes
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes
RestrictSUIDSGID=yes
LockPersonality=yes
# /opt/decnet holds release slots + state; the agent reads them and writes its PID.
ReadWritePaths=/opt/decnet /var/log/decnet

Restart=on-failure
RestartSec=5
TimeoutStopSec=15

[Install]
WantedBy=multi-user.target