wgpl 1.0.1

WGPL (WireGuard Peer Lite) — disconnected CLI for declarative hub-and-spoke IPv4 VPN intent (SQLite SSOT, BYOI).

WGPL (WireGuard Peer Lite)

WGPL is a disconnected Python CLI for hub-and-spoke VPN topologies. You declare routing intent in SQLite (the single source of truth); WGPL derives WireGuard AllowedIPs, allocates IPv4 addresses, tracks peer lifecycle and audit, and applies hub changes with zero downtime (wg syncconf). Bring your own OS interface (BYOI) — no more hand-picking free IPs or restarting the hub to add a peer. The kernel stays unchanged until you apply or remote syncconf.

Compatibility (1.0.x): Once 1.0.0 is released, the 1.0.x line follows Semantic Versioning. Patch and minor releases in 1.0.x will not break existing CLI commands, flags, or public --json field names. Breaking CLI or JSON changes require a new major version (2.0.0).

Start here: Quick Start · docs/routing.md · Documentation map

What WGPL is / is not

WGPL is	WGPL is not
Declarative hub-and-spoke IPv4 topology manager	A network daemon or control plane
Routing intent engine + WireGuard config generator	Full-mesh overlay (use Tailscale / Netmaker)
Disconnected CLI; SQLite SSOT	A kernel routing or iptables manager
Peer lifecycle, IPAM, append-only audit	IPv6 support (IPv4 pools and peers only)
BYOI: you create the OS wg0 (or equivalent)	Direct site-to-site P2P without a hub

Architecture and module layers: DESIGN.md.

Quick Start

1. Install

Recommended: Python / uv (Python 3.12+)

uv tool install wgpl
# or: pip install wgpl

Experimental: standalone Linux binary

Unsigned release artifact for air-gapped routers. Prefer uv/pip when possible. Verify the checksum from the GitHub Release (SHA256SUMS) before running.

curl -sL https://github.com/aleaz/wgpl/releases/latest/download/wgpl-linux-amd64 \
  -o /usr/local/bin/wgpl
# Verify SHA-256 against SHA256SUMS from the same release, then:
chmod +x /usr/local/bin/wgpl

2. Bring your own hub interface (BYOI)

WGPL does not create the OS WireGuard netdev. Create wg0 (or equivalent) first, then copy its public key for interface add.

# Minimal hub: [Interface] with PrivateKey, Address (e.g. 10.0.0.1/24), ListenPort
sudo systemctl enable --now wg-quick@wg0
sudo wg show wg0 public-key   # <WG0_PUBKEY> below

If wgpl apply later fails because the OS interface does not exist, finish this step first — see docs/runbook.md — Troubleshooting.

3. Pin the database and register a hub

Pin a database path so sudo apply and non-root mutations share the same SSOT:

export WGPL_DB_PATH="$HOME/.wgpl.db"
# or pass --db "$HOME/.wgpl.db" on every command

Term	Meaning
Server endpoint	Host (and port) where clients connect — e.g. vpn.example.com in interface add
peer.role = endpoint	An end-user device (laptop/phone), not the hub hostname

A WGPL interface row is the hub record for one VPN domain (you may name it wg0 to match your OS device).

# Register the hub: name, server endpoint host, hub public key, address pool
# Add --port N if the hub does not listen on the default 51820
wgpl interface add wg0 vpn.example.com <WG0_PUBKEY> 10.0.0.0/24

# Attach a device (default policy: vpn_only). Positional name find-or-creates the Node.
wgpl peer add "Alice_Laptop" -i wg0
wgpl peer list

Client AllowedIPs default to vpn_only. Policies and overrides: docs/routing.md.

4. Validate, apply, inspect, and distribute

Canonical flow: validate → apply → explain → distribute.

wgpl validate wg0
sudo --preserve-env=WGPL_DB_PATH wgpl apply wg0
# equivalent: sudo wgpl --db "$HOME/.wgpl.db" apply wg0

wgpl peer list                  # copy the peer ID (or unique hex prefix) from the ID column
wgpl peer explain <PEER_ID>
wgpl peer qr <PEER_ID>
wgpl peer config <PEER_ID> > alice.conf
chmod 600 alice.conf

<PEER_ID> is a peer UUID or unique hex prefix from peer list (not the node name — use wgpl node for device identity / rename). With more than one WGPL interface, pass -i on secret-bearing commands — docs/cli.md.

Install on the end-user device: docs/runbook.md — Client provisioning.

Why WGPL

vs wg-quick (manual config files)

Feature	wg-quick (manual)	wgpl
Peer storage / IPAM	Text files; manual IPs	SQLite + automatic CIDR IPAM
Routing / AllowedIPs	Manual per peer in .conf	Declared intent; derived at export
Applying changes	Restarts interface (drops connections)	Zero-downtime hot-reload (wg syncconf)
Audit / TTL / verify	None / manual	Append-only audit, --expires, validate + routing matrix

Fit / not a fit

You keep keys, backups, and hub relay; you run apply and OS forwarding yourself — not a mesh control plane.

• Full-mesh or managed overlay — Tailscale, Netmaker, or similar (WGPL targets one hub per VPN domain, not P2P mesh).
• Direct site-to-site without a hub — Out of scope. Configure WireGuard manually, or use peer config --allowed-ips for a one-off export override.
• Site-to-site via a central hub — In scope. Two subnet_router peers; LAN↔LAN through the concentrator. See docs/routing.md — Site-to-site.

Concepts

WGPL models a declarative hub-and-spoke VPN topology, not WireGuard text files. WireGuard ([Interface], [Peer], AllowedIPs) is an export format produced at apply/export time.

Node (identity)  →  Peer (attachment)  →  Interface (hub / VPN domain)

Node	Who — global device identity (wgpl node); rename with node update (peer update has no --name)
Peer	How — attachment to one hub (keys, IP, routing intent, lifecycle)
Interface	Where — hub record for one VPN domain (pool, endpoint, optional hub routes)

Full domain table and identity rules: DESIGN.md — Domain model.

Mutations never touch the kernel until you apply or export:

Intent (SQLite)  →  validate  →  apply / export / peer config / QR

• Mutations write the database only; they do not touch WireGuard.
• Apply / export derives routes, validates, then emits text for wg syncconf, client .conf, QR, or JSON.
• wgpl apply fails closed if the database fails consistency checks.

Module-level emit gate and layering: DESIGN.md.

Routing

Declare role, routed_networks, and allowed_ips_policy on interfaces and peers. WGPL derives AllowedIPs at export; hub packet relay (ip_forward, firewall) stays with the operator — docs/runbook.md — Hub routing relay.

Policy	Client AllowedIPs (summary)
vpn_only (default)	VPN address pool only
split_tunnel	Pool + interface.routed_networks
all_remote_networks	Split set + other sites' LANs
full_tunnel	0.0.0.0/0
custom	peer.custom_allowed_ips

Eight hub-and-spoke patterns, glossary, LAN↔LAN, and invariants: docs/routing.md. Executable topology spec: docs/routing_matrix.md. Inspect with wgpl peer explain <PEER_ID> (UUID or hex prefix from peer list).

Day-2 ops (validate/apply, TTL, prune, backup, deploy, client OS): docs/runbook.md.

Highlights

• Composite identity: Interface names may repeat across servers; hubs are keyed by name + server endpoint + port. Use the numeric interface ID from wgpl interface list when names collide.
• Global IPAM within each hub CIDR; idempotent wgpl apply (deltas only).
• Device identity via wgpl node; the same device can attach to several hubs.
• TTL and cleanup: --expires, soft delete, and prune — runbook.
• Fail-closed emit/apply/restore; chmod 600 on DB and sensitive outputs; append-only audit (no secrets in metadata) — SECURITY.md.
• Strict --json for automation (including derived hub_allowed_ips / client_allowed_ips): resource payloads use {"status":"success","data":…} on stdout; domain errors use {"status":"error","message":…} on stdout with human hints on stderr. Use jq '.data' / .data[] for resources.
• Wire-safe MTU (minimum 1280 or unset); server endpoints RFC 1123 (IPv4/hostname; IPv6 endpoints rejected).
• BYOI deploy: systemd, remote syncconf, Docker, MikroTik — runbook — Deployment.

Integrations

Copy-paste starting points in examples/:

• Ansible Playbook: Multi-server zero-downtime updates from a control node.
• Terraform & Cloud Firewalls: Whitelist peer IPs in AWS Security Groups via Terraform external data.
• GitHub Actions (GitOps): Deploy VPN state from CI/CD.
• FastAPI Self-Service Portal: Illustrative API wrapper for QR-based onboarding (requires WGPL_PORTAL_API_KEY).

Configuration

Variable	Description	Default
WGPL_DB_PATH	Path to the SQLite database (also settable with global --db)	~/.wgpl.db
WGPL_WG_BIN	Path to wg for apply / syncconf (ignored when UID 0; defaults to /usr/bin/wg)	wg (PATH)
WGPL_EXEC_CMD	Optional audit metadata: the CLI command that triggered the mutation (sanitized, bounded)	(unset)

wireguard-tools (wg) is required only for wgpl apply on the same machine. Full CLI: wgpl --help or docs/cli.md. Docker image ghcr.io/aleaz/wgpl and DB permissions: runbook — Docker, Environment and permissions.

Documentation map

Document	Contents
DESIGN.md	Domain model, layered architecture, security boundaries
docs/routing.md	Routing model, patterns, scope, invariants
docs/routing_matrix.md	Executable topology spec (valid / invalid)
docs/runbook.md	Production procedures (validate, apply, hub relay, deploy, client OS, backup, compliance)
docs/cli.md	Full CLI reference
SECURITY.md	Threat model and security policies
CONTRIBUTING.md	Development workflow and commit conventions
MAINTAINERS.md	Maintainer ownership
CHANGELOG.md	Release history
CODE_OF_CONDUCT.md	Community conduct

Contributing

git clone https://github.com/aleaz/wgpl.git
cd wgpl
uv sync --dev
uv tool run pre-commit install
uv run ruff check src/ tests/
uv run mypy src/ tests/
uv run pytest

Please read CONTRIBUTING.md before opening a pull request.

Author

• Alejandro Azario — GitHub

License

MIT