jpictl: initial env command [WIP]

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

cmd/jpictl/config.go

@@ -1,7 +1,5 @@
 package main
 
-import "git.jpi.io/amery/jpictl/pkg/zones"
-
 // Config describes the repository
 type Config struct {
 	Base   string
@@ -12,10 +10,3 @@ var cfg = &Config{
 	Base:   "./m",
 	Domain: "m.jpi.cloud",
 }
-
-// LoadZones loads all zones and machines in the config directory
-func (cfg *Config) LoadZones(resolve bool) (*zones.Zones, error) {
-	return zones.New(cfg.Base, cfg.Domain,
-		zones.ResolvePublicAddresses(resolve),
-	)
-}

cmd/jpictl/dump.go

@@ -2,76 +2,27 @@ package main
 
 import (
 	"bytes"
-	"encoding/json"
-	"io"
 	"os"
 
 	"github.com/burntSushi/toml"
 	"github.com/spf13/cobra"
-	"gopkg.in/yaml.v3"
+
+	"git.jpi.io/amery/jpictl/pkg/zones"
 )
 
-// Encoder represents an object that encodes another internally
-type Encoder interface {
-	Encode(any) error
-}
-
-// Encoding represents a type of [Encoder]
-type Encoding int
-
-const (
-	// TOMLEncoding represents TOML encoding
-	TOMLEncoding Encoding = iota
-	// JSONEncoding represents JSON encoding
-	JSONEncoding
-	// YAMLEncoding represents YAML encoding
-	YAMLEncoding
-)
-
-// NewJSONEncoder returns a JSON [Encoder] to work on the given [io.Writer]
-func NewJSONEncoder(w io.Writer) Encoder {
-	enc := json.NewEncoder(w)
-	enc.SetIndent(``, `  `)
-	return enc
-}
-
-// NewYAMLEncoder returns a YAML [Encoder] to work on the given [io.Writer]
-func NewYAMLEncoder(w io.Writer) Encoder {
-	enc := yaml.NewEncoder(w)
-	enc.SetIndent(2)
-	return enc
-}
-
-// NewTOMLEncoder returns a TOML [Encoder] to work on the given [io.Writer]
-func NewTOMLEncoder(w io.Writer) Encoder {
-	enc := toml.NewEncoder(w)
-	return enc
-}
-
-const encoding = YAMLEncoding
-
 // Command
 var dumpCmd = &cobra.Command{
 	Use:   "dump",
-	Short: "generates a text representation of the config",
+	Short: "generates a toml representation of the config",
 	RunE: func(_ *cobra.Command, _ []string) error {
 		var buf bytes.Buffer
-		var enc Encoder
 
-		m, err := cfg.LoadZones(true)
+		m, err := zones.New(cfg.Base, cfg.Domain)
 		if err != nil {
 			return err
 		}
 
-		switch encoding {
+		enc := toml.NewEncoder(&buf)
-		case JSONEncoding:
-			enc = NewJSONEncoder(&buf)
-		case YAMLEncoding:
-			enc = NewYAMLEncoder(&buf)
-		default:
-			enc = NewTOMLEncoder(&buf)
-		}
-
 		if err = enc.Encode(m); err != nil {
 			return err
 		}

cmd/jpictl/env.go

@@ -4,6 +4,8 @@ import (
 	"os"
 
 	"github.com/spf13/cobra"
+
+	"git.jpi.io/amery/jpictl/pkg/zones"
 )
 
 // Command
@@ -11,24 +13,15 @@ var envCmd = &cobra.Command{
 	Use:   "env",
 	Short: "generates environment variables for shell scripts",
 	RunE: func(_ *cobra.Command, _ []string) error {
-		m, err := cfg.LoadZones(false)
+		m, err := zones.New(cfg.Base, cfg.Domain)
 		if err != nil {
 			return err
 		}
 
-		_, err = m.Env(*envExport).WriteTo(os.Stdout)
+		return m.WriteEnv(os.Stdout)
-		return err
 	},
 }
 
-// Command Flags
-var (
-	envExport *bool
-)
-
 func init() {
 	rootCmd.AddCommand(envCmd)
-
-	envExport = envCmd.PersistentFlags().BoolP("export", "e", false,
-		"export generated variables")
 }

cmd/jpictl/write.go

@@ -1,23 +0,0 @@
-package main
-
-import (
-	"github.com/spf13/cobra"
-)
-
-// Command
-var writeCmd = &cobra.Command{
-	Use:   "write",
-	Short: "rewrites all config files",
-	RunE: func(_ *cobra.Command, _ []string) error {
-		m, err := cfg.LoadZones(false)
-		if err != nil {
-			return err
-		}
-
-		return m.SyncAll()
-	},
-}
-
-func init() {
-	rootCmd.AddCommand(writeCmd)
-}

go.mod

@@ -8,12 +8,9 @@ require (
 	darvaza.org/sidecar v0.0.0-20230721122716-b9c54b8adbaf
 	darvaza.org/slog v0.5.2
 	github.com/burntSushi/toml v0.3.1
-	github.com/hack-pad/hackpadfs v0.2.1
 	github.com/mgechev/revive v1.3.2
 	github.com/spf13/cobra v1.7.0
-	golang.org/x/crypto v0.12.0
 	gopkg.in/gcfg.v1 v1.2.3
-	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (

go.sum

@@ -26,8 +26,6 @@ github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBD
 github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
 github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/hack-pad/hackpadfs v0.2.1 h1:FelFhIhv26gyjujoA/yeFO+6YGlqzmc9la/6iKMIxMw=
-github.com/hack-pad/hackpadfs v0.2.1/go.mod h1:khQBuCEwGXWakkmq8ZiFUvUZz84ZkJ2KNwKvChs4OrU=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
@@ -72,8 +70,6 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
-golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
-golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
 golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 h1:MGwJjxBy0HJshjDNfLsYO8xppfqWlA5ZT9OhtUUhTNw=
 golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
@@ -90,7 +86,6 @@ golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
 golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.12.0 h1:YW6HUoUmYBpwSgyaGaZq1fHjrBjX1rlpZ54T6mu2kss=
 golang.org/x/tools v0.12.0/go.mod h1:Sc0INKfu04TlqNoRA1hgpFZbhYXHPr4V5DzpSBTPqQM=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/gcfg.v1 v1.2.3 h1:m8OOJ4ccYHnx2f4gQwpno8nAX5OGOh7RLaaz0pj3Ogs=
 gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=

pkg/wireguard/config.go

@@ -1,44 +1,17 @@
 package wireguard
 
 import (
-	"bytes"
 	"errors"
 	"fmt"
 	"io"
 	"net/netip"
 	"strconv"
 	"strings"
-	"text/template"
 
 	"darvaza.org/core"
 	"gopkg.in/gcfg.v1"
 )
 
-var configTemplate = template.Must(template.New("config").Funcs(template.FuncMap{
-	"PrefixJoin": func(a []netip.Prefix, sep string) string {
-		s := make([]string, len(a))
-		for i, p := range a {
-			s[i] = p.String()
-		}
-		return strings.Join(s, sep)
-	},
-}).Parse(`[Interface]
-{{if .Interface.Name}}# Name: {{.Interface.Name}}
-{{end -}}
-Address = {{.Interface.Address}}
-PrivateKey = {{.Interface.PrivateKey}}
-ListenPort = {{.Interface.ListenPort}}
-{{- range .Peer }}
-
-[Peer]
-{{if .Name}}# Name: {{.Name}}
-{{end -}}
-PublicKey = {{.PublicKey}}
-Endpoint = {{.Endpoint}}
-AllowedIPs = {{ PrefixJoin .AllowedIPs ", "}}
-{{- end }}
-`))
-
 // Config represents a wgN.conf file
 type Config struct {
 	Interface InterfaceConfig
@@ -55,29 +28,16 @@ func (f *Config) Peers() int {
 	return len(f.Peer)
 }
 
-// WriteTo writes a Wireguard [Config] onto the provided [io.Writer]
-func (f *Config) WriteTo(w io.Writer) (int64, error) {
-	var buf bytes.Buffer
-
-	if err := configTemplate.Execute(&buf, f); err != nil {
-		return 0, err
-	}
-
-	return buf.WriteTo(w)
-}
-
 // InterfaceConfig represents the [Interface] section
 type InterfaceConfig struct {
-	Name       string
 	Address    netip.Addr
-	PrivateKey PrivateKey
+	PrivateKey BinaryKey
 	ListenPort uint16
 }
 
 // PeerConfig represents a [Peer] section
 type PeerConfig struct {
-	Name       string
+	PublicKey  BinaryKey
-	PublicKey  PublicKey
 	Endpoint   EndpointAddress
 	AllowedIPs []netip.Prefix
 }
@@ -175,7 +135,7 @@ func (p interfaceConfig) Export() (InterfaceConfig, error) {
 		ListenPort: p.ListenPort,
 	}
 
-	out.PrivateKey, err = PrivateKeyFromBase64(p.PrivateKey)
+	out.PrivateKey, err = BinaryKeyFromBase64(p.PrivateKey)
 	if err != nil {
 		err = core.Wrap(err, "PrivateKey")
 		return InterfaceConfig{}, err
@@ -202,7 +162,7 @@ func (v *intermediateConfig) ExportPeer(i int) (PeerConfig, error) {
 	}
 
 	// PublicKey
-	out.PublicKey, err = PublicKeyFromBase64(v.Peer.PublicKey[i])
+	out.PublicKey, err = BinaryKeyFromBase64(v.Peer.PublicKey[i])
 	if err != nil {
 		err = core.Wrap(err, "PublicKey")
 		return out, err

pkg/wireguard/keys.go

@@ -2,218 +2,35 @@ package wireguard
 
 import (
 	"bytes"
-	"crypto/rand"
 	"encoding/base64"
-	"errors"
-	"fmt"
-
-	"golang.org/x/crypto/curve25519"
 )
 
-const (
+// BinaryKey is a binary blob
-	// PrivateKeySize is the length in bytes of a Wireguard Private Key
+type BinaryKey []byte
-	PrivateKeySize = 32
-	// PublicKeySize is the length in bytes of a Wireguard Public Key
-	PublicKeySize = 32
-)
 
-var (
+func (k BinaryKey) String() string {
-	// ErrInvalidKeySize indicates the key size is wrong
+	return base64.StdEncoding.EncodeToString(k)
-	ErrInvalidKeySize = errors.New("invalid key size")
-	// ErrInvalidPrivateKey indicates the private key is invalid
-	ErrInvalidPrivateKey = errors.New("invalid private key")
-	// ErrInvalidPublicKey indicates the public key is invalid
-	ErrInvalidPublicKey = errors.New("invalid public key")
-)
-
-type (
-	// PrivateKey is a binary Wireguard Private Key
-	PrivateKey [PrivateKeySize]byte
-	// PublicKey is a binary Wireguard Public Key
-	PublicKey [PublicKeySize]byte
-)
-
-func (key PrivateKey) String() string {
-	switch {
-	case key.IsZero():
-		return ""
-	default:
-		return base64.StdEncoding.EncodeToString(key[:])
-	}
-}
-
-func (pub PublicKey) String() string {
-	switch {
-	case pub.IsZero():
-		return ""
-	default:
-		return base64.StdEncoding.EncodeToString(pub[:])
-	}
-}
-
-// MarshalJSON encodes the key for JSON, omitting empty.
-func (key PrivateKey) MarshalJSON() ([]byte, error) {
-	return encodeKeyJSON(key.String())
-}
-
-// MarshalJSON encodes the key for JSON, omitting empty.
-func (pub PublicKey) MarshalJSON() ([]byte, error) {
-	return encodeKeyJSON(pub.String())
-}
-
-func encodeKeyJSON(s string) ([]byte, error) {
-	var out []byte
-	if s != "" {
-		out = []byte(fmt.Sprintf("%q", s))
-	}
-
-	return out, nil
-}
-
-// MarshalYAML encodes the key for YAML, omitting empty.
-func (key PrivateKey) MarshalYAML() (any, error) {
-	return encodeKeyYAML(key.String())
-}
-
-// MarshalYAML encodes the key for YAML, omitting empty.
-func (pub PublicKey) MarshalYAML() (any, error) {
-	return encodeKeyYAML(pub.String())
-}
-
-func encodeKeyYAML(s string) (any, error) {
-	if s == "" {
-		return nil, nil
-	}
-
-	return s, nil
 }
 
 // IsZero tells if the key hasn't been set
-func (key PrivateKey) IsZero() bool {
+func (k BinaryKey) IsZero() bool {
-	var zero PrivateKey
+	return len(k) == 0
-	return key.Equal(zero)
 }
 
-// IsZero tells if the key hasn't been set
+// Equal checks if two keys are identical
-func (pub PublicKey) IsZero() bool {
+func (k BinaryKey) Equal(alter BinaryKey) bool {
-	var zero PublicKey
+	return bytes.Equal(k, alter)
-	return pub.Equal(zero)
 }
 
-// Equal checks if two private keys are identical
+// BinaryKeyFromBase64 decodes a base64-based string into
-func (key PrivateKey) Equal(alter PrivateKey) bool {
+// a [BinaryKey]
-	return bytes.Equal(key[:], alter[:])
+func BinaryKeyFromBase64(data string) (BinaryKey, error) {
-}
-
-// Equal checks if two public keys are identical
-func (pub PublicKey) Equal(alter PublicKey) bool {
-	return bytes.Equal(pub[:], alter[:])
-}
-
-// PrivateKeyFromBase64 decodes a base64-based string into
-// a [PrivateKey]
-func PrivateKeyFromBase64(data string) (PrivateKey, error) {
-	b, err := decodeKey(data, PrivateKeySize)
-	if err != nil {
-		var zero PrivateKey
-		return zero, err
-	}
-	return *(*[PrivateKeySize]byte)(b), nil
-}
-
-// PublicKeyFromBase64 decodes a base64-based string into
-// a [PublicKey]
-func PublicKeyFromBase64(data string) (PublicKey, error) {
-	b, err := decodeKey(data, PublicKeySize)
-	if err != nil {
-		var zero PublicKey
-		return zero, err
-	}
-	return *(*[PublicKeySize]byte)(b), nil
-}
-
-func decodeKey(data string, size int) ([]byte, error) {
 	b, err := base64.StdEncoding.DecodeString(data)
-	switch {
+	return BinaryKey(b), err
-	case err != nil:
-		return []byte{}, err
-	case len(b) != size:
-		err = ErrInvalidKeySize
-		return []byte{}, err
-	default:
-		return b, nil
-	}
-}
-
-// NewPrivateKey creates a new PrivateKey
-func NewPrivateKey() (PrivateKey, error) {
-	var s [PrivateKeySize]byte
-
-	_, err := rand.Read(s[:])
-	if err != nil {
-		var zero PrivateKey
-		return zero, err
-	}
-
-	// apply same clamping as wireguard-go/device/noise-helpers.go
-	s[0] &= 0xf8
-	s[31] = (s[31] & 0x7f) | 0x40
-
-	return s, nil
-}
-
-// Public generates the corresponding PublicKey
-func (key PrivateKey) Public() PublicKey {
-	var pub PublicKey
-	if !key.IsZero() {
-		in := (*[PrivateKeySize]byte)(&key)
-		out := (*[PublicKeySize]byte)(&pub)
-
-		curve25519.ScalarBaseMult(out, in)
-	}
-	return pub
 }
 
 // KeyPair holds a Key pair
 type KeyPair struct {
-	PrivateKey PrivateKey
+	PrivateKey BinaryKey
-	PublicKey  PublicKey
+	PublicKey  BinaryKey
-}
-
-// Validate checks the PublicKey matches the PrivateKey,
-// and sets the PublicKey if missing
-func (kp *KeyPair) Validate() error {
-	keyLen := len(kp.PrivateKey)
-	pubLen := len(kp.PublicKey)
-
-	switch {
-	case keyLen != PrivateKeySize:
-		// bad private key
-		return ErrInvalidPrivateKey
-	case pubLen == 0:
-		// no public key, set it
-		kp.PublicKey = kp.PrivateKey.Public()
-		return nil
-	case pubLen != PublicKeySize:
-		// bad public key
-		return ErrInvalidPublicKey
-	case !kp.PrivateKey.Public().Equal(kp.PublicKey):
-		// wrong public key
-		return ErrInvalidPublicKey
-	default:
-		// correct public key
-		return nil
-	}
-}
-
-// NewKeyPair creates a new KeyPair for Wireguard
-func NewKeyPair() (KeyPair, error) {
-	var out KeyPair
-
-	key, err := NewPrivateKey()
-	if err == nil {
-		out.PrivateKey = key
-		out.PublicKey = key.Public()
-	}
-	return out, nil
 }

pkg/zones/env.go

@@ -1,113 +1,9 @@
+// Package zones abstracts the cluster zones
 package zones
 
-import (
+import "io"
-	"bytes"
-	"fmt"
-	"io"
-	"strings"
-)
 
-// Env is a shell environment factory for this cluster
+// WriteEnv generates environment variables for shell scripts
-type Env struct {
+func (*Zones) WriteEnv(io.Writer) error {
-	ZoneIterator
+	return nil
-
-	export bool
-}
-
-// Env returns a shell environment factory
-func (m *Zones) Env(export bool) *Env {
-	return &Env{
-		ZoneIterator: m,
-		export:       export,
-	}
-}
-
-// Zones returns the list of Zone IDs
-func (m *Env) Zones() []int {
-	var zones []int
-
-	m.ForEachZone(func(z *Zone) bool {
-		zones = append(zones, z.ID)
-		return false
-	})
-
-	return zones
-}
-
-// WriteTo generates environment variables for shell scripts
-func (m *Env) WriteTo(w io.Writer) (int64, error) {
-	var buf bytes.Buffer
-
-	m.writeEnvVarInts(&buf, m.Zones(), "ZONES")
-	m.ForEachZone(func(z *Zone) bool {
-		m.writeEnvZone(&buf, z)
-		return false
-	})
-
-	return buf.WriteTo(w)
-}
-
-func (m *Env) writeEnvZone(w io.Writer, z *Zone) {
-	zoneID := z.ID
-
-	// ZONE{zoneID}
-	m.writeEnvVar(w, genEnvZoneNodes(z), "ZONE%v", zoneID)
-
-	// ZONE{zoneID}_NAME
-	m.writeEnvVar(w, z.Name, "ZONE%v_%s", zoneID, "NAME")
-
-	// ZONE{zoneID}_GW
-	gateways, _ := z.GatewayIDs()
-	m.writeEnvVarInts(w, gateways, "ZONE%v_%s", zoneID, "GW")
-}
-
-func (m *Env) writeEnvVarInts(w io.Writer, value []int, name string, args ...any) {
-	var s string
-
-	if n := len(value); n > 0 {
-		var buf bytes.Buffer
-
-		for i, v := range value {
-			if i != 0 {
-				_, _ = fmt.Fprint(&buf, " ")
-			}
-			_, _ = fmt.Fprintf(&buf, "%v", v)
-		}
-
-		s = buf.String()
-	}
-
-	m.writeEnvVar(w, s, name, args...)
-}
-
-func (m *Env) writeEnvVar(w io.Writer, value string, name string, args ...any) {
-	var prefix string
-
-	if m.export {
-		prefix = "export "
-	}
-
-	if len(args) > 0 {
-		name = fmt.Sprintf(name, args...)
-	}
-
-	if name != "" {
-		value = strings.TrimSpace(value)
-
-		_, _ = fmt.Fprintf(w, "%s%s=%q\n", prefix, name, value)
-	}
-}
-
-func genEnvZoneNodes(z *Zone) string {
-	if n := z.Len(); n > 0 {
-		s := make([]string, 0, n)
-
-		z.ForEachMachine(func(p *Machine) bool {
-			s = append(s, p.Name)
-			return false
-		})
-
-		return strings.Join(s, " ")
-	}
-	return ""
 }

pkg/zones/machine.go

@@ -1,28 +1,52 @@
 package zones
 
 import (
+	"fmt"
+	"io/fs"
 	"net/netip"
+	"path/filepath"
+	"strconv"
 	"strings"
+	"sync"
 )
 
-// revive:disable:line-length-limit
-
 // A Machine is a machine on a Zone
 type Machine struct {
+	mu sync.Mutex
+
 	zone *Zone
-	ID   int    `toml:"id"`
+	id   int
-	Name string `toml:"-" json:"-" yaml:"-"`
+	Name string `toml:"name"`
 
-	PublicAddresses []netip.Addr `toml:"public,omitempty" json:"public,omitempty" yaml:"public,omitempty"`
+	PublicAddresses []netip.Addr `toml:"public,omitempty"`
-	Rings           []*RingInfo  `toml:"rings,omitempty"  json:"rings,omitempty"  yaml:"rings,omitempty"`
+	RingAddresses   []*RingInfo  `toml:"rings,omitempty"`
 }
 
-// revive:enable:line-length-limit
-
 func (m *Machine) String() string {
 	return m.Name
 }
 
+// ID return the index within the [Zone] associated to this [Machine]
+func (m *Machine) ID() int {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	if m.id == 0 {
+		zoneName := m.zone.Name
+
+		s := m.Name[len(zoneName)+1:]
+
+		id, err := strconv.ParseInt(s, 10, 8)
+		if err != nil {
+			panic(err)
+		}
+
+		m.id = int(id)
+	}
+
+	return m.id
+}
+
 // FullName returns the Name of the machine including domain name
 func (m *Machine) FullName() string {
 	if domain := m.zone.zones.domain; domain != "" {
@@ -37,35 +61,24 @@ func (m *Machine) FullName() string {
 	return m.Name
 }
 
-// IsGateway tells if the Machine is a ring0 gateway
+// ReadFile reads a file from the machine's config directory
-func (m *Machine) IsGateway() bool {
+func (m *Machine) ReadFile(name string, args ...any) ([]byte, error) {
-	_, ok := m.getRingInfo(0)
+	base := m.zone.zones.dir
-	return ok
+	fullName := m.getFilename(name, args...)
+
+	return fs.ReadFile(base, fullName)
 }
 
-// SetGateway enables/disables a Machine ring0 integration
+func (m *Machine) getFilename(name string, args ...any) string {
-func (m *Machine) SetGateway(enabled bool) error {
+	if len(args) > 0 {
-	ri, found := m.getRingInfo(0)
+		name = fmt.Sprintf(name, args...)
-	switch {
-	case !found && !enabled:
-		return nil
-	case !found:
-		var err error
-
-		if ri, err = m.createRingInfo(0, false); err != nil {
-			return err
-		}
 	}
 
-	ri.Enabled = enabled
+	s := []string{
-	return m.SyncWireguardConfig(0)
+		m.zone.Name,
-}
+		m.Name,
+		name,
+	}
 
-// Zone indicates the [Zone] this machine belongs to
+	return filepath.Join(s...)
-func (m *Machine) Zone() int {
-	return m.zone.ID
-}
-
-func (m *Machine) getPeerByName(name string) (*Machine, bool) {
-	return m.zone.zones.GetMachineByName(name)
 }

pkg/zones/machine_file.go

@@ -1,87 +0,0 @@
-package zones
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-
-	fs "github.com/hack-pad/hackpadfs"
-)
-
-// OpenFile opens a file on the machine's config directory with the specified flags
-func (m *Machine) OpenFile(name string, flags int, args ...any) (fs.File, error) {
-	base := m.zone.zones.dir
-	fullName := m.getFilename(name, args...)
-
-	return fs.OpenFile(base, fullName, flags, 0644)
-}
-
-// CreateTruncFile creates or truncates a file on the machine's config directory
-func (m *Machine) CreateTruncFile(name string, args ...any) (io.WriteCloser, error) {
-	return m.openWriter(name, os.O_CREATE|os.O_TRUNC, args...)
-}
-
-// CreateFile creates a file on the machine's config directory
-func (m *Machine) CreateFile(name string, args ...any) (io.WriteCloser, error) {
-	return m.openWriter(name, os.O_CREATE, args...)
-}
-
-func (m *Machine) openWriter(name string, flags int, args ...any) (io.WriteCloser, error) {
-	f, err := m.OpenFile(name, os.O_WRONLY|flags, args...)
-	if err != nil {
-		return nil, err
-	}
-
-	return f.(io.WriteCloser), nil
-}
-
-// RemoveFile deletes a file from the machine's config directory
-func (m *Machine) RemoveFile(name string, args ...any) error {
-	base := m.zone.zones.dir
-	fullName := m.getFilename(name, args...)
-	err := fs.Remove(base, fullName)
-
-	switch {
-	case os.IsNotExist(err):
-		return nil
-	default:
-		return err
-	}
-}
-
-// ReadFile reads a file from the machine's config directory
-func (m *Machine) ReadFile(name string, args ...any) ([]byte, error) {
-	base := m.zone.zones.dir
-	fullName := m.getFilename(name, args...)
-
-	return fs.ReadFile(base, fullName)
-}
-
-// WriteStringFile writes the given content to a file on the machine's config directory
-func (m *Machine) WriteStringFile(value string, name string, args ...any) error {
-	f, err := m.CreateTruncFile(name, args...)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	buf := bytes.NewBufferString(value)
-	_, err = buf.WriteTo(f)
-	return err
-}
-
-func (m *Machine) getFilename(name string, args ...any) string {
-	if len(args) > 0 {
-		name = fmt.Sprintf(name, args...)
-	}
-
-	s := []string{
-		m.zone.Name,
-		m.Name,
-		name,
-	}
-
-	return filepath.Join(s...)
-}

pkg/zones/machine_rings.go

@@ -10,90 +10,6 @@ import (
 	"git.jpi.io/amery/jpictl/pkg/wireguard"
 )
 
-// GetWireguardKeys reads a wgN.key/wgN.pub files
-func (m *Machine) GetWireguardKeys(ring int) (wireguard.KeyPair, error) {
-	var (
-		data []byte
-		err  error
-		out  wireguard.KeyPair
-	)
-
-	data, err = m.ReadFile("wg%v.key", ring)
-	if err != nil {
-		// failed to read
-		return out, err
-	}
-
-	out.PrivateKey, err = wireguard.PrivateKeyFromBase64(string(data))
-	if err != nil {
-		// bad key
-		err = core.Wrapf(err, "wg%v.key", ring)
-		return out, err
-	}
-
-	data, err = m.ReadFile("wg%v.pub", ring)
-	switch {
-	case os.IsNotExist(err):
-		// no wgN.pub is fine
-	case err != nil:
-		// failed to read
-		return out, err
-	default:
-		// good read
-		out.PublicKey, err = wireguard.PublicKeyFromBase64(string(data))
-		if err != nil {
-			// bad key
-			err = core.Wrapf(err, "wg%v.pub", ring)
-			return out, err
-		}
-	}
-
-	err = out.Validate()
-	return out, err
-}
-
-func (m *Machine) tryReadWireguardKeys(ring int) error {
-	kp, err := m.GetWireguardKeys(ring)
-	switch {
-	case os.IsNotExist(err):
-		// ignore
-		return nil
-	case err != nil:
-		// something went wrong
-		return err
-	default:
-		// import keys
-		ri := &RingInfo{
-			Ring: ring,
-			Keys: kp,
-		}
-
-		return m.applyRingInfo(ring, ri)
-	}
-}
-
-// RemoveWireguardKeys deletes wgN.key and wgN.pub from
-// the machine's config directory
-func (m *Machine) RemoveWireguardKeys(ring int) error {
-	var err error
-
-	err = m.RemoveFile("wg%v.pub", ring)
-	switch {
-	case os.IsNotExist(err):
-		// ignore
-	case err != nil:
-		return err
-	}
-
-	err = m.RemoveFile("wg%v.key", ring)
-	if os.IsNotExist(err) {
-		// ignore
-		err = nil
-	}
-
-	return err
-}
-
 // GetWireguardConfig reads a wgN.conf file
 func (m *Machine) GetWireguardConfig(ring int) (*wireguard.Config, error) {
 	data, err := m.ReadFile("wg%v.conf", ring)
@@ -129,86 +45,17 @@ func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
 		return err
 	}
 
-	if err := m.applyWireguardInterfaceConfig(ring, wg.Interface); err != nil {
-		err = core.Wrapf(err, "%s: wg%v:%s", m.Name, ring, addr)
-		return err
-	}
-
-	for _, peer := range wg.Peer {
-		if err := m.applyWireguardPeerConfig(ring, peer); err != nil {
-			err = core.Wrapf(err, "%s: wg%v:%s", m.Name, ring, addr)
-			return err
-		}
-	}
-
 	return nil
 }
 
-func (m *Machine) getRingInfo(ring int) (*RingInfo, bool) {
-	for _, ri := range m.Rings {
-		if ri.Ring == ring {
-			return ri, ri.Enabled
-		}
-	}
-
-	return nil, false
-}
-
-func (m *Machine) applyRingInfo(ring int, new *RingInfo) error {
-	cur, _ := m.getRingInfo(ring)
-	if cur == nil {
-		// first, append
-		m.Rings = append(m.Rings, new)
-		return nil
-	}
-
-	// extra, merge
-	return cur.Merge(new)
-}
-
-func (m *Machine) applyWireguardInterfaceConfig(ring int, data wireguard.InterfaceConfig) error {
-	ri := &RingInfo{
-		Ring:    ring,
-		Enabled: true,
-		Keys: wireguard.KeyPair{
-			PrivateKey: data.PrivateKey,
-		},
-	}
-
-	return m.applyRingInfo(ring, ri)
-}
-
-func (m *Machine) applyWireguardPeerConfig(ring int, pc wireguard.PeerConfig) error {
-	peer, found := m.getPeerByName(pc.Endpoint.Name())
-	switch {
-	case !found:
-		// unknown
-	case ring == 1 && m.zone != peer.zone:
-		// invalid zone
-	default:
-		// apply RingInfo
-		ri := &RingInfo{
-			Ring:    ring,
-			Enabled: true,
-			Keys: wireguard.KeyPair{
-				PublicKey: pc.PublicKey,
-			},
-		}
-
-		return peer.applyRingInfo(ring, ri)
-	}
-
-	return fmt.Errorf("%q: invalid peer endpoint", pc.Endpoint.Host)
-}
-
 func (m *Machine) applyZoneNodeID(zoneID, nodeID int) error {
 	switch {
 	case zoneID == 0:
 		return fmt.Errorf("invalid %s", "zoneID")
 	case nodeID == 0:
 		return fmt.Errorf("invalid %s", "nodeID")
-	case m.ID != nodeID:
+	case m.ID() != nodeID:
-		return fmt.Errorf("invalid %s: %v ≠ %v", "zoneID", m.ID, nodeID)
+		return fmt.Errorf("invalid %s: %v ≠ %v", "zoneID", m.ID(), nodeID)
 	case m.zone.ID != 0 && m.zone.ID != zoneID:
 		return fmt.Errorf("invalid %s: %v ≠ %v", "zoneID", m.zone.ID, zoneID)
 	case m.zone.ID == 0:
@@ -217,34 +64,3 @@ func (m *Machine) applyZoneNodeID(zoneID, nodeID int) error {
 
 	return nil
 }
-
-// RemoveWireguardConfig deletes wgN.conf from the machine's
-// config directory.
-func (m *Machine) RemoveWireguardConfig(ring int) error {
-	err := m.RemoveFile("wg%v.conf", ring)
-	if os.IsNotExist(err) {
-		err = nil
-	}
-
-	return err
-}
-
-func (m *Machine) createRingInfo(ring int, enabled bool) (*RingInfo, error) {
-	keys, err := wireguard.NewKeyPair()
-	if err != nil {
-		return nil, err
-	}
-
-	ri := &RingInfo{
-		Ring:    ring,
-		Enabled: enabled,
-		Keys:    keys,
-	}
-
-	err = m.applyRingInfo(ring, ri)
-	if err != nil {
-		return nil, err
-	}
-
-	return ri, nil
-}

pkg/zones/machine_scan.go

@@ -3,13 +3,11 @@ package zones
 import (
 	"context"
 	"net/netip"
-	"strconv"
 	"time"
 )
 
-// LookupNetIP uses the DNS Resolver to get the public addresses associated
+func (m *Machine) lookupNetIP() ([]netip.Addr, error) {
-// to a Machine
+	timeout := 2 * time.Second
-func (m *Machine) LookupNetIP(timeout time.Duration) ([]netip.Addr, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), timeout)
 
 	defer cancel()
@@ -17,9 +15,8 @@ func (m *Machine) LookupNetIP(timeout time.Duration) ([]netip.Addr, error) {
 	return m.zone.zones.resolver.LookupNetIP(ctx, "ip", m.FullName())
 }
 
-// UpdatePublicAddresses uses the DNS Resolver to set Machine.PublicAddresses
+func (m *Machine) updatePublicAddresses() error {
-func (m *Machine) UpdatePublicAddresses() error {
+	addrs, err := m.lookupNetIP()
-	addrs, err := m.LookupNetIP(2 * time.Second)
 	if err != nil {
 		return err
 	}
@@ -28,42 +25,12 @@ func (m *Machine) UpdatePublicAddresses() error {
 	return nil
 }
 
-func (m *Machine) init() error {
+func (m *Machine) scan() error {
-	if err := m.setID(); err != nil {
-		return err
-	}
-
-	for i := 0; i < RingsCount; i++ {
-		if err := m.tryReadWireguardKeys(i); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (m *Machine) setID() error {
-	zoneName := m.zone.Name
-	suffix := m.Name[len(zoneName)+1:]
-
-	id, err := strconv.ParseInt(suffix, 10, 8)
-	if err != nil {
-		return err
-	}
-
-	m.ID = int(id)
-	return nil
-}
-
-func (m *Machine) scan(opts *ScanOptions) error {
 	for i := 0; i < RingsCount; i++ {
 		if err := m.tryApplyWireguardConfig(i); err != nil {
 			return err
 		}
 	}
 
-	if !opts.DontResolvePublicAddresses {
+	return m.updatePublicAddresses()
-		return m.UpdatePublicAddresses()
-	}
-
-	return nil
 }

pkg/zones/options.go

@@ -1,109 +0,0 @@
-package zones
-
-import (
-	"io/fs"
-	"path/filepath"
-
-	"darvaza.org/resolver"
-	"github.com/hack-pad/hackpadfs/os"
-)
-
-// A ScanOption preconfigures the Zones before scanning
-type ScanOption func(*Zones, *ScanOptions) error
-
-// ScanOptions contains flags used by the initial scan
-type ScanOptions struct {
-	// DontResolvePublicAddresses indicates we shouldn't
-	// pre-populate Machine.PublicAddresses during the
-	// initial scan
-	DontResolvePublicAddresses bool
-}
-
-// ResolvePublicAddresses instructs the scanner to use
-// the DNS resolver to get PublicAddresses of nodes.
-// Default is true
-func ResolvePublicAddresses(resolve bool) ScanOption {
-	return func(m *Zones, opt *ScanOptions) error {
-		opt.DontResolvePublicAddresses = !resolve
-		return nil
-	}
-}
-
-// WithLookuper specifies what resolver.Lookuper to use to
-// find public addresses
-func WithLookuper(h resolver.Lookuper) ScanOption {
-	return func(m *Zones, opt *ScanOptions) error {
-		if h == nil {
-			return fs.ErrInvalid
-		}
-		m.resolver = resolver.NewResolver(h)
-		return nil
-	}
-}
-
-// WithResolver specifies what resolver to use to find
-// public addresses. if nil is passed, the [net.Resolver] will be used.
-// The default is using Cloudflare's 1.1.1.1.
-func WithResolver(h resolver.Resolver) ScanOption {
-	return func(m *Zones, opt *ScanOptions) error {
-		if h == nil {
-			h = resolver.SystemResolver(true)
-		}
-
-		m.resolver = h
-		return nil
-	}
-}
-
-func (m *Zones) setDefaults(opt *ScanOptions) error {
-	if m.resolver == nil {
-		h := resolver.NewCloudflareLookuper()
-
-		if err := WithLookuper(h)(m, opt); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// NewFS builds a [Zones] tree using the given directory
-func NewFS(dir fs.FS, domain string, opts ...ScanOption) (*Zones, error) {
-	var scanOptions ScanOptions
-
-	z := &Zones{
-		dir:    dir,
-		domain: domain,
-	}
-
-	for _, opt := range opts {
-		if err := opt(z, &scanOptions); err != nil {
-			return nil, err
-		}
-	}
-
-	if err := z.setDefaults(&scanOptions); err != nil {
-		return nil, err
-	}
-
-	if err := z.scan(&scanOptions); err != nil {
-		return nil, err
-	}
-
-	return z, nil
-}
-
-// New builds a [Zones] tree using the given directory
-func New(dir, domain string, opts ...ScanOption) (*Zones, error) {
-	dir, err := filepath.Abs(dir)
-	if err != nil {
-		return nil, err
-	}
-
-	base, err := os.NewFS().Sub(dir[1:])
-	if err != nil {
-		return nil, err
-	}
-
-	return NewFS(base, domain, opts...)
-}

pkg/zones/rings.go

@@ -1,8 +1,6 @@
 package zones
 
 import (
-	"fmt"
-	"io/fs"
 	"net/netip"
 
 	"git.jpi.io/amery/jpictl/pkg/wireguard"
@@ -15,72 +13,21 @@ const (
 	MaxNodeID = 0xff - 1
 	// RingsCount indicates how many wireguard rings we have
 	RingsCount = 2
-	// RingZeroPort is the port wireguard uses for ring0
-	RingZeroPort = 51800
-	// RingOnePort is the port wireguard uses for ring1
-	RingOnePort = 51810
 )
 
 // RingInfo contains represents the Wireguard endpoint details
 // for a Machine on a particular ring
 type RingInfo struct {
-	Ring    int               `toml:"ring"`
+	Ring    int                `toml:"ring"`
-	Enabled bool              `toml:"enabled,omitempty"`
+	Enabled bool               `toml:"enabled,omitempty"`
-	Keys    wireguard.KeyPair `toml:"keys,omitempty"`
+	Keys    *wireguard.KeyPair `toml:"keys,omitempty"`
-}
+	Address netip.Addr         `toml:"address,omitempty"`
-
-// Merge attempts to combine two RingInfo structs
-func (ri *RingInfo) Merge(alter *RingInfo) error {
-	switch {
-	case alter == nil:
-		return nil
-	case ri.Ring != alter.Ring:
-		// different ring
-		return fmt.Errorf("invalid %s: %v ≠ %v", "ring", ri.Ring, alter.Ring)
-	case ri.Enabled && !alter.Enabled:
-		// can't disable via Merge
-		return fmt.Errorf("invalid %s: %v → %v", "enabled", ri.Enabled, alter.Enabled)
-	case !canMergeKeyPairs(ri.Keys, alter.Keys):
-		// incompatible keypairs
-		return fmt.Errorf("invalid %s: %s ≠ %s", "keys", ri.Keys, alter.Keys)
-	}
-
-	return ri.unsafeMerge(alter)
-}
-
-func (ri *RingInfo) unsafeMerge(alter *RingInfo) error {
-	// enable via Merge
-	if alter.Enabled {
-		ri.Enabled = true
-	}
-
-	// fill the gaps on our keypair
-	if ri.Keys.PrivateKey.IsZero() {
-		ri.Keys.PrivateKey = alter.Keys.PrivateKey
-	}
-	if ri.Keys.PublicKey.IsZero() {
-		ri.Keys.PublicKey = alter.Keys.PublicKey
-	}
-
-	return nil
-}
-
-func canMergeKeyPairs(p1, p2 wireguard.KeyPair) bool {
-	switch {
-	case !p1.PrivateKey.IsZero() && !p2.PrivateKey.IsZero() && !p1.PrivateKey.Equal(p2.PrivateKey):
-		return false
-	case !p1.PublicKey.IsZero() && !p2.PublicKey.IsZero() && !p1.PublicKey.Equal(p2.PublicKey):
-		return false
-	default:
-		return true
-	}
 }
 
 // RingAddressEncoder provides encoder/decoder access for a particular
 // Wireguard ring
 type RingAddressEncoder struct {
 	ID     int
-	Port   uint16
 	Encode func(zoneID, nodeID int) (netip.Addr, bool)
 	Decode func(addr netip.Addr) (zoneID, nodeID int, ok bool)
 }
@@ -89,14 +36,12 @@ var (
 	// RingZero is a wg0 address encoder/decoder
 	RingZero = RingAddressEncoder{
 		ID:     0,
-		Port:   RingZeroPort,
 		Decode: ParseRingZeroAddress,
 		Encode: RingZeroAddress,
 	}
 	// RingOne is a wg1 address encoder/decoder
 	RingOne = RingAddressEncoder{
 		ID:     1,
-		Port:   RingOnePort,
 		Decode: ParseRingOneAddress,
 		Encode: RingOneAddress,
 	}
@@ -176,174 +121,7 @@ func RingOneAddress(zoneID, nodeID int) (netip.Addr, bool) {
 	case !ValidZoneID(zoneID) || !ValidNodeID(nodeID):
 		return netip.Addr{}, false
 	default:
-		a4 := [4]uint8{10, uint8(zoneID << 4), 0, uint8(nodeID)}
+		a4 := [4]uint8{10, 0, uint8(zoneID << 4), uint8(nodeID)}
 		return netip.AddrFrom4(a4), true
 	}
 }
-
-var (
-	_ MachineIterator = (*Ring)(nil)
-	_ ZoneIterator    = (*Ring)(nil)
-)
-
-// A Ring describes all peers on a ring
-type Ring struct {
-	RingAddressEncoder
-	ZoneIterator
-
-	Peers []*RingPeer
-}
-
-// AddPeer adds a [Machine] to the ring
-func (r *Ring) AddPeer(p *Machine) bool {
-	ri, ok := p.getRingInfo(r.ID)
-	if !ok {
-		return false
-	}
-
-	nodeID := p.ID
-	zoneID := p.Zone()
-	addr, _ := r.Encode(zoneID, nodeID)
-
-	rp := &RingPeer{
-		Node:       p,
-		Address:    addr,
-		PrivateKey: ri.Keys.PrivateKey,
-		PeerConfig: wireguard.PeerConfig{
-			Name:      fmt.Sprintf("%s-%v", p.Name, r.ID),
-			PublicKey: ri.Keys.PublicKey,
-			Endpoint: wireguard.EndpointAddress{
-				Host: p.FullName(),
-				Port: r.Port,
-			},
-		},
-	}
-
-	switch {
-	case r.ID == 0:
-		r.setRingZeroAllowedIPs(rp)
-	case p.IsGateway():
-		r.setRingOneGatewayAllowedIPs(rp)
-	default:
-		r.setRingOneNodeAllowedIPs(rp)
-	}
-
-	r.Peers = append(r.Peers, rp)
-	return true
-}
-
-func (r *Ring) setRingZeroAllowedIPs(rp *RingPeer) {
-	zoneID, _, _ := r.Decode(rp.Address)
-
-	// everyone on ring0 is a gateway to ring1
-	addr, _ := RingOneAddress(zoneID, 0)
-	rp.AllowCIDR(addr, 12)
-
-	// peer
-	rp.AllowCIDR(rp.Address, 32)
-}
-
-func (r *Ring) setRingOneGatewayAllowedIPs(rp *RingPeer) {
-	zoneID, _, _ := r.Decode(rp.Address)
-
-	// peer
-	rp.AllowCIDR(rp.Address, 32)
-
-	// ring1 gateways connect to all other ring1 networks
-	r.ForEachZone(func(z *Zone) bool {
-		if z.ID != zoneID {
-			addr, _ := r.Encode(z.ID, 0)
-			rp.AllowCIDR(addr, 12)
-		}
-		return false
-	})
-
-	// ring1 gateways also connect to all ring0 addresses
-	r.ForEachZone(func(z *Zone) bool {
-		z.ForEachMachine(func(p *Machine) bool {
-			if p.IsGateway() {
-				addr, _ := RingZeroAddress(z.ID, p.ID)
-				rp.AllowCIDR(addr, 32)
-			}
-			return false
-		})
-		return false
-	})
-}
-
-func (*Ring) setRingOneNodeAllowedIPs(rp *RingPeer) {
-	// only to the peer itself
-	rp.AllowCIDR(rp.Address, 32)
-}
-
-// ForEachMachine calls a function for each Machine in the ring
-// until instructed to terminate the loop
-func (r *Ring) ForEachMachine(fn func(*Machine) bool) {
-	for _, pp := range r.Peers {
-		if fn(pp.Node) {
-			return
-		}
-	}
-}
-
-// ExportConfig builds a wgN.conf for the specified machine on the ring
-func (r *Ring) ExportConfig(p *Machine) (*wireguard.Config, error) {
-	var found bool
-
-	out := &wireguard.Config{
-		Interface: wireguard.InterfaceConfig{
-			ListenPort: r.Port,
-		},
-	}
-
-	for _, pp := range r.Peers {
-		switch {
-		case pp.Node == p:
-			// current
-			found = true
-			out.Interface.Name = pp.PeerConfig.Name
-			out.Interface.Address = pp.Address
-			out.Interface.PrivateKey = pp.PrivateKey
-		default:
-			// peer
-			pc := pp.PeerConfig
-			out.Peer = append(out.Peer, pc)
-		}
-	}
-
-	if !found {
-		return nil, fs.ErrNotExist
-	}
-
-	return out, nil
-}
-
-// A RingPeer is a node on a [Ring]
-type RingPeer struct {
-	Node *Machine
-
-	Address    netip.Addr
-	PrivateKey wireguard.PrivateKey
-	PeerConfig wireguard.PeerConfig
-}
-
-// AllowCIDR allows an IP range via this peer
-func (rp *RingPeer) AllowCIDR(addr netip.Addr, bits int) {
-	cidr := netip.PrefixFrom(addr, bits)
-	rp.PeerConfig.AllowedIPs = append(rp.PeerConfig.AllowedIPs, cidr)
-}
-
-// NewRing composes a new Ring for Wireguard setup
-func NewRing(z ZoneIterator, m MachineIterator, ring int) (*Ring, error) {
-	r := &Ring{
-		RingAddressEncoder: Rings[ring],
-		ZoneIterator:       z,
-	}
-
-	m.ForEachMachine(func(p *Machine) bool {
-		r.AddPeer(p)
-		return false
-	})
-
-	return r, nil
-}

pkg/zones/scan.go

@@ -2,26 +2,9 @@ package zones
 
 import (
 	"io/fs"
-	"sort"
 )
 
-func (m *Zones) scan(opts *ScanOptions) error {
+func (m *Zones) scan() error {
-	for _, fn := range []func(*ScanOptions) error{
-		m.scanDirectory,
-		m.scanMachines,
-		m.scanZoneIDs,
-		m.scanSort,
-		m.scanGateways,
-	} {
-		if err := fn(opts); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (m *Zones) scanDirectory(_ *ScanOptions) error {
 	// each directory is a zone
 	entries, err := fs.ReadDir(m.dir, ".")
 	if err != nil {
@@ -43,80 +26,15 @@ func (m *Zones) scanDirectory(_ *ScanOptions) error {
 		}
 	}
 
-	return nil
+	return m.scanMachines()
 }
 
-func (m *Zones) scanMachines(opts *ScanOptions) error {
+func (m *Zones) scanMachines() error {
 	var err error
-	m.ForEachMachine(func(p *Machine) bool {
+	m.ForEachMachine(func(p *Machine) {
-		err = p.scan(opts)
+		if err == nil {
-		return err != nil
+			err = p.scan()
-	})
-	return err
-}
-
-func (m *Zones) scanZoneIDs(_ *ScanOptions) error {
-	var hasMissing bool
-	var lastZoneID int
-
-	m.ForEachZone(func(z *Zone) bool {
-		switch {
-		case z.ID == 0:
-			hasMissing = true
-		case z.ID > lastZoneID:
-			lastZoneID = z.ID
 		}
-
-		return false
-	})
-
-	if hasMissing {
-		next := lastZoneID + 1
-
-		m.ForEachZone(func(z *Zone) bool {
-			if z.ID == 0 {
-				z.ID, next = next, next+1
-			}
-
-			return false
-		})
-	}
-
-	return nil
-}
-
-func (m *Zones) scanSort(_ *ScanOptions) error {
-	sort.SliceStable(m.Zones, func(i, j int) bool {
-		id1 := m.Zones[i].ID
-		id2 := m.Zones[j].ID
-		return id1 < id2
-	})
-
-	m.ForEachZone(func(z *Zone) bool {
-		sort.Sort(z)
-		return false
-	})
-
-	m.ForEachMachine(func(p *Machine) bool {
-		sort.SliceStable(p.Rings, func(i, j int) bool {
-			ri1 := p.Rings[i]
-			ri2 := p.Rings[j]
-
-			return ri1.Ring < ri2.Ring
-		})
-
-		return false
-	})
-
-	return nil
-}
-
-func (m *Zones) scanGateways(_ *ScanOptions) error {
-	var err error
-
-	m.ForEachZone(func(z *Zone) bool {
-		_, _, err = z.GetGateway()
-		return err != nil
 	})
 	return err
 }
@@ -135,51 +53,9 @@ func (z *Zone) scan() error {
 				Name: e.Name(),
 			}
 
-			if err := m.init(); err != nil {
-				return err
-			}
-
 			z.Machines = append(z.Machines, m)
 		}
 	}
 
 	return nil
 }
-
-// GetGateway returns the first gateway found, if none
-// files will be created to enable the first [Machine] to
-// be one
-func (z *Zone) GetGateway() (*Machine, bool, error) {
-	var first *Machine
-	var gateway *Machine
-
-	z.zones.ForEachMachine(func(p *Machine) bool {
-		switch {
-		case p.IsGateway():
-			// found
-			gateway = p
-		case first == nil:
-			// remember
-			first = p
-		default:
-			// keep looking
-		}
-
-		return gateway != nil
-	})
-
-	switch {
-	case gateway != nil:
-		// found one
-		return gateway, false, nil
-	case first != nil:
-		// make one
-		if err := first.SetGateway(true); err != nil {
-			return first, false, err
-		}
-		return first, true, nil
-	default:
-		// Zone without nodes?
-		panic("unreachable")
-	}
-}

pkg/zones/sync.go

@@ -1,33 +0,0 @@
-package zones
-
-// SyncAll updates all config files
-func (m *Zones) SyncAll() error {
-	for _, fn := range []func() error{
-		m.SyncAllWireguard,
-	} {
-		if err := fn(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// SyncAllWireguard updates all wireguard config files
-func (m *Zones) SyncAllWireguard() error {
-	var err error
-
-	for ring := 0; ring < RingsCount; ring++ {
-		err = m.WriteWireguardKeys(ring)
-		if err != nil {
-			return err
-		}
-
-		err = m.SyncWireguardConfig(ring)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}

pkg/zones/wireguard.go

@@ -1,272 +0,0 @@
-package zones
-
-import (
-	"io/fs"
-	"os"
-)
-
-var (
-	_ WireguardConfigPruner = (*Zones)(nil)
-	_ WireguardConfigPruner = (*Zone)(nil)
-	_ WireguardConfigPruner = (*Machine)(nil)
-
-	_ WireguardConfigWriter = (*Zones)(nil)
-	_ WireguardConfigWriter = (*Zone)(nil)
-	_ WireguardConfigWriter = (*Machine)(nil)
-
-	_ WireguardConfigSyncer = (*Zones)(nil)
-	_ WireguardConfigSyncer = (*Zone)(nil)
-	_ WireguardConfigSyncer = (*Machine)(nil)
-
-	_ WireguardKeysWriter = (*Zones)(nil)
-	_ WireguardKeysWriter = (*Zone)(nil)
-	_ WireguardKeysWriter = (*Machine)(nil)
-)
-
-// A WireguardConfigPruner deletes wgN.conf on all machines under
-// its scope with the specified ring disabled
-type WireguardConfigPruner interface {
-	PruneWireguardConfig(ring int) error
-}
-
-// PruneWireguardConfig removes wgN.conf files of machines with
-// the corresponding ring disabled on all zones
-func (m *Zones) PruneWireguardConfig(ring int) error {
-	return pruneWireguardConfig(m, ring)
-}
-
-// PruneWireguardConfig removes wgN.conf files of machines with
-// the corresponding ring disabled.
-func (z *Zone) PruneWireguardConfig(ring int) error {
-	return pruneWireguardConfig(z, ring)
-}
-
-func pruneWireguardConfig(m MachineIterator, ring int) error {
-	var err error
-
-	m.ForEachMachine(func(p *Machine) bool {
-		err = p.PruneWireguardConfig(ring)
-		if os.IsNotExist(err) {
-			// ignore
-			err = nil
-		}
-
-		return err != nil
-	})
-
-	return err
-}
-
-// PruneWireguardConfig deletes the wgN.conf file if its
-// presence on the ring is disabled
-func (m *Machine) PruneWireguardConfig(ring int) error {
-	_, ok := m.getRingInfo(ring)
-	if !ok {
-		return m.RemoveWireguardConfig(ring)
-	}
-
-	return nil
-}
-
-// A WireguardConfigWriter rewrites all wgN.conf on all machines under
-// its scope attached to that ring
-type WireguardConfigWriter interface {
-	WriteWireguardConfig(ring int) error
-}
-
-// WriteWireguardConfig rewrites all wgN.conf on all machines
-// attached to that ring
-func (m *Zones) WriteWireguardConfig(ring int) error {
-	switch ring {
-	case 0:
-		return writeWireguardConfig(m, m, ring)
-	case 1:
-		var err error
-		m.ForEachZone(func(z *Zone) bool {
-			err = writeWireguardConfig(m, z, ring)
-			return err != nil
-		})
-		return err
-	default:
-		return fs.ErrInvalid
-	}
-}
-
-// WriteWireguardConfig rewrites all wgN.conf on all machines
-// on the Zone attached to that ring
-func (z *Zone) WriteWireguardConfig(ring int) error {
-	switch ring {
-	case 0:
-		return writeWireguardConfig(z.zones, z.zones, ring)
-	case 1:
-		return writeWireguardConfig(z.zones, z, ring)
-	default:
-		return fs.ErrInvalid
-	}
-}
-
-func writeWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
-	r, err := NewRing(z, m, ring)
-	if err != nil {
-		return err
-	}
-
-	r.ForEachMachine(func(p *Machine) bool {
-		err = p.writeWireguardRingConfig(r)
-		return err != nil
-	})
-
-	return err
-}
-
-// WriteWireguardConfig rewrites the wgN.conf file of this Machine
-// if enabled
-func (m *Machine) WriteWireguardConfig(ring int) error {
-	r, err := NewRing(m.zone.zones, m.zone, ring)
-	if err != nil {
-		return err
-	}
-
-	return m.writeWireguardRingConfig(r)
-}
-
-func (m *Machine) writeWireguardRingConfig(r *Ring) error {
-	wg, err := r.ExportConfig(m)
-	if err != nil {
-		return nil
-	}
-
-	f, err := m.CreateTruncFile("wg%v.conf", r.ID)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	_, err = wg.WriteTo(f)
-	return err
-}
-
-// A WireguardConfigSyncer updates all wgN.conf on all machines under
-// its scope reflecting the state of the ring
-type WireguardConfigSyncer interface {
-	SyncWireguardConfig(ring int) error
-}
-
-// SyncWireguardConfig updates all wgN.conf files for the specified
-// ring
-func (m *Zones) SyncWireguardConfig(ring int) error {
-	switch ring {
-	case 0:
-		return syncWireguardConfig(m, m, ring)
-	case 1:
-		var err error
-		m.ForEachZone(func(z *Zone) bool {
-			err = syncWireguardConfig(m, z, ring)
-			return err != nil
-		})
-		return err
-	default:
-		return fs.ErrInvalid
-	}
-}
-
-// SyncWireguardConfig updates all wgN.conf files for the specified
-// ring
-func (z *Zone) SyncWireguardConfig(ring int) error {
-	switch ring {
-	case 0:
-		return syncWireguardConfig(z.zones, z.zones, ring)
-	case 1:
-		return syncWireguardConfig(z.zones, z, ring)
-	default:
-		return fs.ErrInvalid
-	}
-}
-
-func syncWireguardConfig(z ZoneIterator, m MachineIterator, ring int) error {
-	r, err := NewRing(z, m, ring)
-	if err != nil {
-		return err
-	}
-
-	r.ForEachMachine(func(p *Machine) bool {
-		if _, ok := p.getRingInfo(ring); ok {
-			err = p.writeWireguardRingConfig(r)
-		} else {
-			err = p.RemoveWireguardConfig(ring)
-		}
-		return err != nil
-	})
-
-	return err
-}
-
-// SyncWireguardConfig updates all wgN.conf files for the specified
-// ring
-func (m *Machine) SyncWireguardConfig(ring int) error {
-	return m.zone.SyncWireguardConfig(ring)
-}
-
-// A WireguardKeysWriter writes the Wireguard Keys for all machines
-// under its scope for the specified ring
-type WireguardKeysWriter interface {
-	WriteWireguardKeys(ring int) error
-}
-
-// WriteWireguardKeys rewrites all wgN.{key,pub} files
-func (m *Zones) WriteWireguardKeys(ring int) error {
-	return writeWireguardKeys(m, ring)
-}
-
-// WriteWireguardKeys rewrites all wgN.{key,pub} files on this zone
-func (z *Zone) WriteWireguardKeys(ring int) error {
-	return writeWireguardKeys(z, ring)
-}
-
-func writeWireguardKeys(m MachineIterator, ring int) error {
-	var err error
-
-	m.ForEachMachine(func(p *Machine) bool {
-		err = p.WriteWireguardKeys(ring)
-		if os.IsNotExist(err) {
-			// ignore
-			err = nil
-		}
-
-		return err != nil
-	})
-
-	return err
-}
-
-// WriteWireguardKeys writes the wgN.key/wgN.pub files
-func (m *Machine) WriteWireguardKeys(ring int) error {
-	var err error
-	var key, pub string
-	var ri *RingInfo
-
-	ri, _ = m.getRingInfo(ring)
-	if ri != nil {
-		key = ri.Keys.PrivateKey.String()
-		pub = ri.Keys.PublicKey.String()
-	}
-
-	switch {
-	case key == "":
-		return fs.ErrNotExist
-	case pub == "":
-		pub = ri.Keys.PrivateKey.Public().String()
-	}
-
-	err = m.WriteStringFile(key+"\n", "wg%v.key", ring)
-	if err != nil {
-		return err
-	}
-
-	err = m.WriteStringFile(pub+"\n", "wg%v.pub", ring)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}

pkg/zones/zones.go

@@ -3,138 +3,25 @@ package zones
 
 import (
 	"io/fs"
-	"sort"
+	"os"
 
 	"darvaza.org/resolver"
 )
 
-var (
-	_ MachineIterator = Machines(nil)
-	_ sort.Interface  = Machines(nil)
-
-	_ MachineIterator = (*Zone)(nil)
-	_ MachineIterator = (*Zones)(nil)
-	_ ZoneIterator    = (*Zones)(nil)
-)
-
-// A MachineIterator is a set of Machines we can iterate on
-type MachineIterator interface {
-	ForEachMachine(func(*Machine) bool)
-}
-
-// A ZoneIterator is a set of Zones we can iterate on
-type ZoneIterator interface {
-	ForEachZone(func(*Zone) bool)
-}
-
-// Machines is a list of Machine objects
-type Machines []*Machine
-
-// ForEachMachine calls a function for each Machine in the list
-// until instructed to terminate the loop
-func (m Machines) ForEachMachine(fn func(*Machine) bool) {
-	for _, p := range m {
-		if fn(p) {
-			return
-		}
-	}
-}
-
-// Len returns the number of machines in the list
-func (m Machines) Len() int {
-	return len(m)
-}
-
-// Less implements sort.Interface to sort the list
-func (m Machines) Less(i, j int) bool {
-	a, b := m[i], m[j]
-	za, zb := a.Zone(), b.Zone()
-
-	switch {
-	case za == zb:
-		return a.ID < b.ID
-	default:
-		return za < zb
-	}
-}
-
-// Swap implements sort.Interface to sort the list
-func (m Machines) Swap(i, j int) {
-	m[i], m[j] = m[j], m[i]
-}
-
-// FilterMachines produces a subset of the machines offered by the given
-// iterator fulfilling a condition
-func FilterMachines(m MachineIterator, cond func(*Machine) bool) (Machines, int) {
-	var out []*Machine
-
-	if cond == nil {
-		// unconditional
-		cond = func(*Machine) bool { return true }
-	}
-
-	m.ForEachMachine(func(p *Machine) bool {
-		if cond(p) {
-			out = append(out, p)
-		}
-		return false
-	})
-
-	return out, len(out)
-}
-
 // Zone represents one zone in a cluster
 type Zone struct {
 	zones *Zones
 
-	ID   int    `toml:"id"`
+	ID   int
-	Name string `toml:"name"`
+	Name string
 
-	Machines `toml:"machines"`
+	Machines []*Machine `toml:"machines"`
 }
 
 func (z *Zone) String() string {
 	return z.Name
 }
 
-// SetGateway configures a machine to be the zone's ring0 gateway
-func (z *Zone) SetGateway(gatewayID int, enabled bool) error {
-	var err error
-	var found bool
-
-	z.ForEachMachine(func(p *Machine) bool {
-		if p.ID == gatewayID {
-			found = true
-			err = p.SetGateway(enabled)
-
-			return true
-		}
-		return false
-	})
-
-	switch {
-	case err != nil:
-		return err
-	case !found:
-		return fs.ErrNotExist
-	default:
-		return nil
-	}
-}
-
-// GatewayIDs returns the list of IDs of machines that act as ring0 gateways
-func (z *Zone) GatewayIDs() ([]int, int) {
-	var out []int
-	z.ForEachMachine(func(p *Machine) bool {
-		if p.IsGateway() {
-			out = append(out, p.ID)
-		}
-		return false
-	})
-
-	return out, len(out)
-}
-
 // Zones represents all zones in a cluster
 type Zones struct {
 	dir      fs.FS
@@ -145,45 +32,39 @@ type Zones struct {
 }
 
 // ForEachMachine calls a function for each Machine in the cluster
-// until instructed to terminate the loop
+func (m *Zones) ForEachMachine(fn func(*Machine)) {
-func (m *Zones) ForEachMachine(fn func(*Machine) bool) {
+	for _, z := range m.Zones {
-	m.ForEachZone(func(z *Zone) bool {
+		for _, p := range z.Machines {
-		var term bool
+			fn(p)
-
-		z.ForEachMachine(func(p *Machine) bool {
-			term = fn(p)
-			return term
-		})
-
-		return term
-	})
-}
-
-// ForEachZone calls a function for each Zone in the cluster
-// until instructed to terminate the loop
-func (m *Zones) ForEachZone(fn func(*Zone) bool) {
-	for _, p := range m.Zones {
-		if fn(p) {
-			// terminate
-			return
 		}
 	}
 }
 
-// GetMachineByName looks for a machine with the specified
+// ForEachZone calls a function for each Zone in the cluster
-// name on any zone
+func (m *Zones) ForEachZone(fn func(*Zone)) {
-func (m *Zones) GetMachineByName(name string) (*Machine, bool) {
+	for _, p := range m.Zones {
-	var out *Machine
+		fn(p)
+	}
+}
 
-	if name != "" {
+// NewFS builds a [Zones] tree using the given directory
-		m.ForEachMachine(func(p *Machine) bool {
+func NewFS(dir fs.FS, domain string) (*Zones, error) {
-			if p.Name == name {
+	lockuper := resolver.NewCloudflareLookuper()
-				out = p
-			}
 
-			return out != nil
+	z := &Zones{
-		})
+		dir:      dir,
+		resolver: resolver.NewResolver(lockuper),
+		domain:   domain,
 	}
 
-	return out, out != nil
+	if err := z.scan(); err != nil {
+		return nil, err
+	}
+
+	return z, nil
+}
+
+// New builds a [Zones] tree using the given directory
+func New(dir, domain string) (*Zones, error) {
+	return NewFS(os.DirFS(dir), domain)
 }