wireguard: WIP

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/wireguard/keys.go

@@ -89,8 +89,25 @@ func decodeKey(data string, size int) ([]byte, error) {
 	}
 }
 
+func NewPrivateKey() (PrivateKey, error)
+
+func (PrivateKey) Public() PublicKey
+
 // KeyPair holds a Key pair
 type KeyPair struct {
 	PrivateKey PrivateKey
 	PublicKey  PublicKey
 }
+
+func NewKeyPair() (*KeyPair, error) {
+	key, err := NewPrivateKey()
+	if err != nil {
+		return nil, err
+	}
+
+	out := &KeyPair{
+		PrivateKey: key,
+		PublicKey:  key.Public(),
+	}
+	return out, nil
+}

pkg/zones/env.go

@@ -88,7 +88,7 @@ func getRingZeroGatewayID(z *Zone) int {
 			firstNodeID = nodeID
 		}
 
-		if _, found := p.getRingInfo(0); found {
+		if p.Gateway() {
 			gatewayID = nodeID
 		}
 

pkg/zones/machine.go

@@ -47,6 +47,34 @@ func (m *Machine) ID() int {
 	return m.id
 }
 
+// Gateway tells if the Machine is a ring0 gateway
+func (m *Machine) Gateway() bool {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	if ri, found := m.getRingInfo(0); found {
+		return ri.Enabled
+	}
+
+	return false
+}
+
+func (m *Machine) SetGateway(enable bool) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	ri, found := m.getRingInfo(0)
+	switch {
+	case !found && !enable:
+		return nil
+	case !found:
+		return m.createRingInfo(0, true)
+	default:
+		ri.Enabled = enable
+		return nil
+	}
+}
+
 // FullName returns the Name of the machine including domain name
 func (m *Machine) FullName() string {
 	if domain := m.zone.zones.domain; domain != "" {

pkg/zones/machine_rings.go

@@ -134,3 +134,18 @@ func (m *Machine) applyZoneNodeID(zoneID, nodeID int) error {
 
 	return nil
 }
+
+func (m *Machine) createRingInfo(ring int, enabled bool) error {
+	keys, err := wireguard.NewKeyPair()
+	if err != nil {
+		return err
+	}
+
+	ri := &RingInfo{
+		Ring:    ring,
+		Enabled: enabled,
+		Keys:    keys,
+	}
+
+	return m.applyRingInfo(ring, ri)
+}