Update - modify hub to support multiple networks. (#4)

Co-authored-by: jdl <jdl@desktop>
Reviewed-on: #4

README.md

@@ -38,6 +38,7 @@ Add and start the hub server:
 
 ```
 systemctl daemon-reload
+systemctl enable hub
 systemctl start hub
 ```
 
@@ -62,10 +63,19 @@ AmbientCapabilities=CAP_NET_BIND_SERVICE CAP_NET_ADMIN
 Type=simple
 User=user
 WorkingDirectory=/home/user/
-ExecStart=/home/user/vppn -name vppn -hub-address https://my.hub -api-key 1234567890
+ExecStart=/home/user/vppn -hub-address https://my.hub -api-key 1234567890
 Restart=always
 RestartSec=8
 
 [Install]
-WantedBy=default.target
+WantedBy=multi-user.target
+```
+
+Add and start the service:
+
+
+```
+systemctl daemon-reload
+systemctl enable vppn
+systemctl start vppn
 ```

go.mod

@@ -3,13 +3,13 @@ module vppn
 go 1.24.1
 
 require (
-	git.crumpington.com/lib/go v0.8.1
-	golang.org/x/crypto v0.29.0
-	golang.org/x/sys v0.27.0
+	git.crumpington.com/lib/go v0.9.0
+	golang.org/x/crypto v0.36.0
+	golang.org/x/sys v0.31.0
 )
 
 require (
 	github.com/mattn/go-sqlite3 v1.14.24 // indirect
-	golang.org/x/net v0.31.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
+	golang.org/x/net v0.37.0 // indirect
+	golang.org/x/text v0.23.0 // indirect
 )

go.sum

@@ -1,12 +1,12 @@
-git.crumpington.com/lib/go v0.8.1 h1:rWjddllSxQ4yReraqDaGZAod4NpRD9LtGx1yV71ytcU=
-git.crumpington.com/lib/go v0.8.1/go.mod h1:XjQaf2NFlje9BJ1EevZL8NNioPrAe7WwHpKUhcDw2Lk=
+git.crumpington.com/lib/go v0.9.0 h1:QXoMhsycSgEUWNiiPZWl0jgBls+NI9TNR5Z6nNXslCM=
+git.crumpington.com/lib/go v0.9.0/go.mod h1:i3DXiPDo/pgPMHAxUTpyo1Xj2spcvXwXcBef3aSYlnQ=
 github.com/mattn/go-sqlite3 v1.14.24 h1:tpSp2G2KyMnnQu99ngJ47EIkWVmliIizyZBfPrBWDRM=
 github.com/mattn/go-sqlite3 v1.14.24/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
-golang.org/x/crypto v0.29.0 h1:L5SG1JTTXupVV3n6sUqMTeWbjAyfPwoda2DLX8J8FrQ=
-golang.org/x/crypto v0.29.0/go.mod h1:+F4F4N5hv6v38hfeYwTdx20oUvLLc+QfrE9Ax9HtgRg=
-golang.org/x/net v0.31.0 h1:68CPQngjLL0r2AlUKiSxtQFKvzRVbnzLwMUn5SzcLHo=
-golang.org/x/net v0.31.0/go.mod h1:P4fl1q7dY2hnZFxEk4pPSkDHF+QqjitcnDjUQyMM+pM=
-golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
-golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.20.0 h1:gK/Kv2otX8gz+wn7Rmb3vT96ZwuoxnQlY+HlJVj7Qug=
-golang.org/x/text v0.20.0/go.mod h1:D4IsuqiFMhST5bX19pQ9ikHC2GsaKyk/oF+pn3ducp4=
+golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
+golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
+golang.org/x/net v0.37.0 h1:1zLorHbz+LYj7MQlSf1+2tPIIgibq2eL5xkrGk6f+2c=
+golang.org/x/net v0.37.0/go.mod h1:ivrbrMbzFq5J41QOQh0siUuly180yBYtLp+CKbEaFx8=
+golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
+golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
+golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=

hub/api/api.go

@@ -54,17 +54,11 @@ func (a *API) ensurePassword() error {
 	log.Printf("Setting password: %s", pwd)
 
 	hashed, err := bcrypt.GenerateFromPassword([]byte(pwd), bcrypt.DefaultCost)
-
 	if err != nil {
 		return err
 	}
 
-	conf := &Config{
-		ConfigID:   1,
-		VPNNetwork: []byte{10, 1, 1, 0},
-		Password:   hashed,
-	}
-
+	conf := &Config{ConfigID: 1, Password: hashed}
 	return db.Config_Insert(a.db, conf)
 }
 
@@ -80,10 +74,6 @@ func (a *API) Config_Update(conf *Config) error {
 	return db.Config_Update(a.db, conf)
 }
 
-func (a *API) Config_UpdatePassword(pwdHash []byte) error {
-	return db.Config_UpdatePassword(a.db, pwdHash)
-}
-
 func (a *API) Session_Delete(sessionID string) error {
 	return db.Session_Delete(a.db, sessionID)
 }
@@ -137,6 +127,24 @@ func (a *API) Session_SignIn(s *Session, pwd string) error {
 	return db.Session_SetSignedIn(a.db, s.SessionID)
 }
 
+func (a *API) Network_Create(n *Network) error {
+	n.NetworkID = idgen.NextID(0)
+	return db.Network_Insert(a.db, n)
+}
+
+func (a *API) Network_Delete(n *Network) error {
+	return db.Network_Delete(a.db, n.NetworkID)
+}
+
+func (a *API) Network_Get(id int64) (*Network, error) {
+	return db.Network_Get(a.db, id)
+}
+
+func (a *API) Network_List() ([]*Network, error) {
+	const query = db.Network_SelectQuery + ` ORDER BY Name ASC`
+	return db.Network_List(a.db, query)
+}
+
 func (a *API) Peer_CreateNew(p *Peer) error {
 	p.Version = idgen.NextID(0)
 	p.PubKey = []byte{}
@@ -146,7 +154,7 @@ func (a *API) Peer_CreateNew(p *Peer) error {
 	return db.Peer_Insert(a.db, p)
 }
 
-func (a *API) Peer_Init(peer *Peer, args m.PeerInitArgs) (*m.PeerConfig, error) {
+func (a *API) Peer_Init(peer *Peer, args m.PeerInitArgs) error {
 	a.lock.Lock()
 	defer a.lock.Unlock()
 
@@ -154,19 +162,7 @@ func (a *API) Peer_Init(peer *Peer, args m.PeerInitArgs) (*m.PeerConfig, error)
 	peer.PubKey = args.EncPubKey
 	peer.PubSignKey = args.PubSignKey
 
-	if err := db.Peer_UpdateFull(a.db, peer); err != nil {
-		return nil, err
-	}
-
-	conf := a.Config_Get()
-
-	return &m.PeerConfig{
-		PeerIP:   peer.PeerIP,
-		Network:  conf.VPNNetwork,
-		PublicIP: peer.PublicIP,
-		Port:     peer.Port,
-		Relay:    peer.Relay,
-	}, nil
+	return db.Peer_UpdateFull(a.db, peer)
 }
 
 func (a *API) Peer_Update(p *Peer) error {
@@ -177,16 +173,16 @@ func (a *API) Peer_Update(p *Peer) error {
 	return db.Peer_Update(a.db, p)
 }
 
-func (a *API) Peer_Delete(ip byte) error {
-	return db.Peer_Delete(a.db, ip)
+func (a *API) Peer_Delete(networkID int64, peerIP byte) error {
+	return db.Peer_Delete(a.db, networkID, peerIP)
 }
 
-func (a *API) Peer_List() ([]*Peer, error) {
-	return db.Peer_ListAll(a.db)
+func (a *API) Peer_List(networkID int64) ([]*Peer, error) {
+	return db.Peer_ListAll(a.db, networkID)
 }
 
-func (a *API) Peer_Get(ip byte) (*Peer, error) {
-	return db.Peer_Get(a.db, ip)
+func (a *API) Peer_Get(networkID int64, ip byte) (*Peer, error) {
+	return db.Peer_Get(a.db, networkID, ip)
 }
 
 func (a *API) Peer_GetByAPIKey(key string) (*Peer, error) {

hub/api/db/generated.go

@@ -16,13 +16,11 @@ type TX interface {
 // ----------------------------------------------------------------------------
 
 type Config struct {
-	ConfigID   int64
-	HubAddress string
-	VPNNetwork []byte
-	Password   []byte
+	ConfigID int64
+	Password []byte
 }
 
-const Config_SelectQuery = "SELECT ConfigID,HubAddress,VPNNetwork,Password FROM config"
+const Config_SelectQuery = "SELECT ConfigID,Password FROM config"
 
 func Config_Insert(
 	tx TX,
@@ -33,7 +31,7 @@ func Config_Insert(
 		return err
 	}
 
-	_, err = tx.Exec("INSERT INTO config(ConfigID,HubAddress,VPNNetwork,Password) VALUES(?,?,?,?)", row.ConfigID, row.HubAddress, row.VPNNetwork, row.Password)
+	_, err = tx.Exec("INSERT INTO config(ConfigID,Password) VALUES(?,?)", row.ConfigID, row.Password)
 	return err
 }
 
@@ -46,7 +44,7 @@ func Config_Update(
 		return err
 	}
 
-	result, err := tx.Exec("UPDATE config SET HubAddress=?,VPNNetwork=? WHERE ConfigID=?", row.HubAddress, row.VPNNetwork, row.ConfigID)
+	result, err := tx.Exec("UPDATE config SET Password=? WHERE ConfigID=?", row.Password, row.ConfigID)
 	if err != nil {
 		return err
 	}
@@ -74,7 +72,7 @@ func Config_UpdateFull(
 		return err
 	}
 
-	result, err := tx.Exec("UPDATE config SET HubAddress=?,VPNNetwork=?,Password=? WHERE ConfigID=?", row.HubAddress, row.VPNNetwork, row.Password, row.ConfigID)
+	result, err := tx.Exec("UPDATE config SET Password=? WHERE ConfigID=?", row.Password, row.ConfigID)
 	if err != nil {
 		return err
 	}
@@ -124,8 +122,8 @@ func Config_Get(
 	err error,
 ) {
 	row = &Config{}
-	r := tx.QueryRow("SELECT ConfigID,HubAddress,VPNNetwork,Password FROM config WHERE ConfigID=?", ConfigID)
-	err = r.Scan(&row.ConfigID, &row.HubAddress, &row.VPNNetwork, &row.Password)
+	r := tx.QueryRow("SELECT ConfigID,Password FROM config WHERE ConfigID=?", ConfigID)
+	err = r.Scan(&row.ConfigID, &row.Password)
 	return
 }
 
@@ -139,7 +137,7 @@ func Config_GetWhere(
 ) {
 	row = &Config{}
 	r := tx.QueryRow(query, args...)
-	err = r.Scan(&row.ConfigID, &row.HubAddress, &row.VPNNetwork, &row.Password)
+	err = r.Scan(&row.ConfigID, &row.Password)
 	return
 }
 
@@ -159,7 +157,7 @@ func Config_Iterate(
 		defer rows.Close()
 		for rows.Next() {
 			row := &Config{}
-			err := rows.Scan(&row.ConfigID, &row.HubAddress, &row.VPNNetwork, &row.Password)
+			err := rows.Scan(&row.ConfigID, &row.Password)
 			if !yield(row, err) {
 				return
 			}
@@ -302,11 +300,156 @@ func Session_List(
 	return l, nil
 }
 
+// ----------------------------------------------------------------------------
+// Table: networks
+// ----------------------------------------------------------------------------
+
+type Network struct {
+	NetworkID int64
+	Name      string
+	Network   []byte
+}
+
+const Network_SelectQuery = "SELECT NetworkID,Name,Network FROM networks"
+
+func Network_Insert(
+	tx TX,
+	row *Network,
+) (err error) {
+	Network_Sanitize(row)
+	if err = Network_Validate(row); err != nil {
+		return err
+	}
+
+	_, err = tx.Exec("INSERT INTO networks(NetworkID,Name,Network) VALUES(?,?,?)", row.NetworkID, row.Name, row.Network)
+	return err
+}
+
+func Network_UpdateFull(
+	tx TX,
+	row *Network,
+) (err error) {
+	Network_Sanitize(row)
+	if err = Network_Validate(row); err != nil {
+		return err
+	}
+
+	result, err := tx.Exec("UPDATE networks SET Name=?,Network=? WHERE NetworkID=?", row.Name, row.Network, row.NetworkID)
+	if err != nil {
+		return err
+	}
+
+	n, err := result.RowsAffected()
+	if err != nil {
+		panic(err)
+	}
+	switch n {
+	case 0:
+		return sql.ErrNoRows
+	case 1:
+		return nil
+	default:
+		panic("multiple rows updated")
+	}
+}
+
+func Network_Delete(
+	tx TX,
+	NetworkID int64,
+) (err error) {
+	result, err := tx.Exec("DELETE FROM networks WHERE NetworkID=?", NetworkID)
+	if err != nil {
+		return err
+	}
+
+	n, err := result.RowsAffected()
+	if err != nil {
+		panic(err)
+	}
+	switch n {
+	case 0:
+		return sql.ErrNoRows
+	case 1:
+		return nil
+	default:
+		panic("multiple rows deleted")
+	}
+}
+
+func Network_Get(
+	tx TX,
+	NetworkID int64,
+) (
+	row *Network,
+	err error,
+) {
+	row = &Network{}
+	r := tx.QueryRow("SELECT NetworkID,Name,Network FROM networks WHERE NetworkID=?", NetworkID)
+	err = r.Scan(&row.NetworkID, &row.Name, &row.Network)
+	return
+}
+
+func Network_GetWhere(
+	tx TX,
+	query string,
+	args ...any,
+) (
+	row *Network,
+	err error,
+) {
+	row = &Network{}
+	r := tx.QueryRow(query, args...)
+	err = r.Scan(&row.NetworkID, &row.Name, &row.Network)
+	return
+}
+
+func Network_Iterate(
+	tx TX,
+	query string,
+	args ...any,
+) iter.Seq2[*Network, error] {
+	rows, err := tx.Query(query, args...)
+	if err != nil {
+		return func(yield func(*Network, error) bool) {
+			yield(nil, err)
+		}
+	}
+
+	return func(yield func(*Network, error) bool) {
+		defer rows.Close()
+		for rows.Next() {
+			row := &Network{}
+			err := rows.Scan(&row.NetworkID, &row.Name, &row.Network)
+			if !yield(row, err) {
+				return
+			}
+		}
+	}
+}
+
+func Network_List(
+	tx TX,
+	query string,
+	args ...any,
+) (
+	l []*Network,
+	err error,
+) {
+	for row, err := range Network_Iterate(tx, query, args...) {
+		if err != nil {
+			return nil, err
+		}
+		l = append(l, row)
+	}
+	return l, nil
+}
+
 // ----------------------------------------------------------------------------
 // Table: peers
 // ----------------------------------------------------------------------------
 
 type Peer struct {
+	NetworkID  int64
 	PeerIP     byte
 	Version    int64
 	APIKey     string
@@ -318,7 +461,7 @@ type Peer struct {
 	PubSignKey []byte
 }
 
-const Peer_SelectQuery = "SELECT PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey FROM peers"
+const Peer_SelectQuery = "SELECT NetworkID,PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey FROM peers"
 
 func Peer_Insert(
 	tx TX,
@@ -329,7 +472,7 @@ func Peer_Insert(
 		return err
 	}
 
-	_, err = tx.Exec("INSERT INTO peers(PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey) VALUES(?,?,?,?,?,?,?,?,?)", row.PeerIP, row.Version, row.APIKey, row.Name, row.PublicIP, row.Port, row.Relay, row.PubKey, row.PubSignKey)
+	_, err = tx.Exec("INSERT INTO peers(NetworkID,PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey) VALUES(?,?,?,?,?,?,?,?,?,?)", row.NetworkID, row.PeerIP, row.Version, row.APIKey, row.Name, row.PublicIP, row.Port, row.Relay, row.PubKey, row.PubSignKey)
 	return err
 }
 
@@ -342,7 +485,7 @@ func Peer_Update(
 		return err
 	}
 
-	result, err := tx.Exec("UPDATE peers SET Version=?,Name=?,PublicIP=?,Port=?,Relay=? WHERE PeerIP=?", row.Version, row.Name, row.PublicIP, row.Port, row.Relay, row.PeerIP)
+	result, err := tx.Exec("UPDATE peers SET Version=?,Name=?,PublicIP=?,Port=?,Relay=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.Name, row.PublicIP, row.Port, row.Relay, row.NetworkID, row.PeerIP)
 	if err != nil {
 		return err
 	}
@@ -370,7 +513,7 @@ func Peer_UpdateFull(
 		return err
 	}
 
-	result, err := tx.Exec("UPDATE peers SET Version=?,APIKey=?,Name=?,PublicIP=?,Port=?,Relay=?,PubKey=?,PubSignKey=? WHERE PeerIP=?", row.Version, row.APIKey, row.Name, row.PublicIP, row.Port, row.Relay, row.PubKey, row.PubSignKey, row.PeerIP)
+	result, err := tx.Exec("UPDATE peers SET Version=?,APIKey=?,Name=?,PublicIP=?,Port=?,Relay=?,PubKey=?,PubSignKey=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.APIKey, row.Name, row.PublicIP, row.Port, row.Relay, row.PubKey, row.PubSignKey, row.NetworkID, row.PeerIP)
 	if err != nil {
 		return err
 	}
@@ -391,9 +534,10 @@ func Peer_UpdateFull(
 
 func Peer_Delete(
 	tx TX,
+	NetworkID int64,
 	PeerIP byte,
 ) (err error) {
-	result, err := tx.Exec("DELETE FROM peers WHERE PeerIP=?", PeerIP)
+	result, err := tx.Exec("DELETE FROM peers WHERE NetworkID=? AND PeerIP=?", NetworkID, PeerIP)
 	if err != nil {
 		return err
 	}
@@ -414,14 +558,15 @@ func Peer_Delete(
 
 func Peer_Get(
 	tx TX,
+	NetworkID int64,
 	PeerIP byte,
 ) (
 	row *Peer,
 	err error,
 ) {
 	row = &Peer{}
-	r := tx.QueryRow("SELECT PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey FROM peers WHERE PeerIP=?", PeerIP)
-	err = r.Scan(&row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
+	r := tx.QueryRow("SELECT NetworkID,PeerIP,Version,APIKey,Name,PublicIP,Port,Relay,PubKey,PubSignKey FROM peers WHERE NetworkID=? AND PeerIP=?", NetworkID, PeerIP)
+	err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
 	return
 }
 
@@ -435,7 +580,7 @@ func Peer_GetWhere(
 ) {
 	row = &Peer{}
 	r := tx.QueryRow(query, args...)
-	err = r.Scan(&row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
+	err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
 	return
 }
 
@@ -455,7 +600,7 @@ func Peer_Iterate(
 		defer rows.Close()
 		for rows.Next() {
 			row := &Peer{}
-			err := rows.Scan(&row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
+			err := rows.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.PublicIP, &row.Port, &row.Relay, &row.PubKey, &row.PubSignKey)
 			if !yield(row, err) {
 				return
 			}

hub/api/db/sanitize-validate.go

@@ -3,35 +3,21 @@ package db
 import (
 	"errors"
 	"net/netip"
-	"net/url"
 	"strings"
 )
 
 var (
-	ErrInvalidIP   = errors.New("invalid IP")
-	ErrInvalidPort = errors.New("invalid port")
+	ErrInvalidIP       = errors.New("invalid IP")
+	ErrNonPrivateIP    = errors.New("non-private IP")
+	ErrInvalidPort     = errors.New("invalid port")
+	ErrInvalidNetName  = errors.New("invalid network name")
+	ErrInvalidPeerName = errors.New("invalid peer name")
 )
 
 func Config_Sanitize(c *Config) {
-	if u, err := url.Parse(c.HubAddress); err == nil {
-		c.HubAddress = u.String()
-	}
-
-	if addr, ok := netip.AddrFromSlice(c.VPNNetwork); ok {
-		c.VPNNetwork = addr.AsSlice()
-	}
 }
 
 func Config_Validate(c *Config) error {
-	if _, err := url.Parse(c.HubAddress); err != nil {
-		return err
-	}
-
-	addr, ok := netip.AddrFromSlice(c.VPNNetwork)
-	if !ok || !addr.Is4() || addr.As4()[3] != 0 || addr.As4()[0] == 0 {
-		return ErrInvalidIP
-	}
-
 	return nil
 }
 
@@ -42,6 +28,42 @@ func Session_Validate(s *Session) error {
 	return nil
 }
 
+func Network_Sanitize(n *Network) {
+	n.Name = strings.TrimSpace(n.Name)
+
+	if addr, ok := netip.AddrFromSlice(n.Network); ok {
+		n.Network = addr.AsSlice()
+	}
+}
+
+func Network_Validate(c *Network) error {
+	// 16 bytes is linux limit for network interface names.
+	if len(c.Name) == 0 || len(c.Name) > 16 {
+		return ErrInvalidNetName
+	}
+
+	for _, c := range c.Name {
+		if c >= 'a' && c <= 'z' {
+			continue
+		}
+		if c >= '0' && c <= '9' {
+			continue
+		}
+		return ErrInvalidNetName
+	}
+
+	addr, ok := netip.AddrFromSlice(c.Network)
+	if !ok || !addr.Is4() || addr.As4()[3] != 0 || addr.As4()[0] == 0 {
+		return ErrInvalidIP
+	}
+
+	if !addr.IsPrivate() {
+		return ErrNonPrivateIP
+	}
+
+	return nil
+}
+
 func Peer_Sanitize(p *Peer) {
 	p.Name = strings.TrimSpace(p.Name)
 	if len(p.PublicIP) != 0 {
@@ -65,5 +87,20 @@ func Peer_Validate(p *Peer) error {
 	if p.Port == 0 {
 		return ErrInvalidPort
 	}
+
+	for _, c := range p.Name {
+		if c >= 'a' && c <= 'z' {
+			continue
+		}
+		if c >= '0' && c <= '9' {
+			continue
+		}
+		if c == '.' || c == '-' || c == '_' {
+			continue
+		}
+
+		return ErrInvalidPeerName
+	}
+
 	return nil
 }

hub/api/db/tables.defs

@@ -1,8 +1,6 @@
 TABLE config OF Config (
   ConfigID    int64  PK,
-  HubAddress  string,
-  VPNNetwork  []byte,
-  Password    []byte NoUpdate
+  Password    []byte
 );
 
 TABLE sessions OF Session NoUpdate (
@@ -13,7 +11,14 @@ TABLE sessions OF Session NoUpdate (
   LastSeenAt int64
 );
 
+TABLE networks OF Network (
+  NetworkID int64 PK,
+  Name      string NoUpdate,
+  Network   []byte NoUpdate
+);
+
 TABLE peers OF Peer (
+  NetworkID  int64 PK,
   PeerIP     byte PK,
   Version    int64,
   APIKey     string NoUpdate,

hub/api/db/written.go

@@ -26,16 +26,9 @@ func Session_DeleteBefore(
 	return err
 }
 
-func Config_UpdatePassword(
-	tx TX,
-	pwdHash []byte,
-) (err error) {
-	_, err = tx.Exec("UPDATE config SET Password=? WHERE ConfigID=1", pwdHash)
-	return err
-}
-
-func Peer_ListAll(tx TX) ([]*Peer, error) {
-	return Peer_List(tx, Peer_SelectQuery)
+func Peer_ListAll(tx TX, networkID int64) ([]*Peer, error) {
+	const query = Peer_SelectQuery + ` WHERE NetworkID=? ORDER BY PeerIP ASC`
+	return Peer_List(tx, query, networkID)
 }
 
 func Peer_GetByAPIKey(tx TX, apiKey string) (*Peer, error) {
@@ -45,7 +38,8 @@ func Peer_GetByAPIKey(tx TX, apiKey string) (*Peer, error) {
 		apiKey)
 }
 
-func Peer_Exists(tx TX, ip byte) (exists bool, err error) {
-	err = tx.QueryRow(`SELECT EXISTS(SELECT 1 FROM peers WHERE PeerIP=?)`, ip).Scan(&exists)
+func Peer_Exists(tx TX, networkID int64, ip byte) (exists bool, err error) {
+	const query = `SELECT EXISTS(SELECT 1 FROM peers WHERE NetworkID=? AND PeerIP=?)`
+	err = tx.QueryRow(query, networkID, ip).Scan(&exists)
 	return
 }

hub/api/migrations/2024-11-30-init.sql

@@ -1,7 +1,5 @@
 CREATE TABLE config (
   ConfigID    INTEGER NOT NULL PRIMARY KEY, -- Always 1.
-  HubAddress  TEXT    NOT NULL, -- https://for.example.com
-  VPNNetwork  BLOB    NOT NULL, -- Network (/24), example 10.51.50.0
   Password    BLOB    NOT NULL  -- bcrypt password for web interface
 ) WITHOUT ROWID;
 
@@ -15,13 +13,22 @@ CREATE TABLE sessions (
 
 CREATE INDEX sessions_last_seen_index ON sessions(LastSeenAt);
 
+CREATE TABLE networks (
+  NetworkID   INTEGER NOT NULL PRIMARY KEY,
+  Name        TEXT    NOT NULL UNIQUE, -- Network/interface name.
+  Network     BLOB    NOT NULL UNIQUE  -- Network (/24), example 10.51.50.0
+) WITHOUT ROWID;
+
 CREATE TABLE peers (
-  PeerIP     INTEGER NOT NULL PRIMARY KEY, -- Final byte.
-  Version    INTEGER NOT NULL,
-  APIKey     TEXT    NOT NULL UNIQUE,
+  NetworkID  INTEGER NOT NULL,
+  PeerIP     INTEGER NOT NULL,             -- Final byte of IP.
+  Version    INTEGER NOT NULL,             -- Changes when updated.
+  APIKey     TEXT    NOT NULL UNIQUE,      -- Peer's secret API key.
   Name       TEXT    NOT NULL UNIQUE,      -- For humans.
   PublicIP   BLOB    NOT NULL,
   Port       INTEGER NOT NULL,
   Relay      INTEGER NOT NULL DEFAULT 0,   -- Boolean if peer will forward packets. Must also have public address.
-  PubKey     BLOB    NOT NULL
+  PubKey     BLOB    NOT NULL,
+  PubSignKey BLOB    NOT NULL,
+  PRIMARY KEY(NetworkID, PeerIP)
 ) WITHOUT ROWID;

hub/api/migrations/2024-12-27-signing-keys.sql

@@ -1 +0,0 @@
-ALTER TABLE peers ADD COLUMN PubSignKey BLOB NOT NULL DEFAULT '';

hub/api/types.go

@@ -4,4 +4,5 @@ import "vppn/hub/api/db"
 
 type Config = db.Config
 type Session = db.Session
+type Network = db.Network
 type Peer = db.Peer

hub/form.go

@@ -0,0 +1,42 @@
+package hub
+
+import (
+	"net/url"
+	"vppn/hub/api"
+
+	"git.crumpington.com/lib/go/webutil"
+)
+
+func (app *App) formGetNetwork(form url.Values) (*api.Network, error) {
+	var id int64
+	if err := webutil.NewFormScanner(form).Scan("NetworkID", &id).Error(); err != nil {
+		return nil, err
+	}
+
+	return app.api.Network_Get(id)
+}
+
+func (app *App) formGetNetworkPeers(form url.Values) (*api.Network, []*api.Peer, error) {
+	n, err := app.formGetNetwork(form)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	peers, err := app.api.Peer_List(n.NetworkID)
+	return n, peers, err
+}
+
+func (app *App) formGetPeer(form url.Values) (*api.Network, *api.Peer, error) {
+	net, err := app.formGetNetwork(form)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var ip byte
+	if err := webutil.NewFormScanner(form).Scan("PeerIP", &ip).Error(); err != nil {
+		return nil, nil, err
+	}
+
+	peer, err := app.api.Peer_Get(net.NetworkID, ip)
+	return net, peer, err
+}

hub/handlers.go

@@ -16,7 +16,7 @@ import (
 
 func (a *App) _root(s *api.Session, w http.ResponseWriter, r *http.Request) error {
 	if s.SignedIn {
-		return a.redirect(w, r, "/admin/config/")
+		return a.redirect(w, r, "/admin/network/list/")
 	} else {
 		return a.redirect(w, r, "/sign-in/")
 	}
@@ -54,54 +54,219 @@ func (a *App) _adminSignOutSubmit(s *api.Session, w http.ResponseWriter, r *http
 	return a.redirect(w, r, "/")
 }
 
-func (a *App) _adminConfig(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	peers, err := a.api.Peer_List()
+func (a *App) _adminNetworkList(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	l, err := a.api.Network_List()
 	if err != nil {
 		return err
 	}
-
-	return a.render("/admin-config.html", w, struct {
-		Session *api.Session
-		Peers   []*api.Peer
-		Config  *api.Config
-	}{
-		s,
-		peers,
-		a.api.Config_Get(),
-	})
+	return a.render("/admin-network-list.html", w, struct {
+		Session  *api.Session
+		Networks []*api.Network
+	}{s, l})
 }
 
-func (a *App) _adminConfigEdit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	return a.render("/admin-config-edit.html", w, struct {
-		Session *api.Session
-		Config  *api.Config
-	}{
-		s,
-		a.api.Config_Get(),
-	})
+func (a *App) _adminNetworkCreate(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	return a.render("/admin-network-create.html", w, struct{ Session *api.Session }{s})
 }
 
-func (a *App) _adminConfigEditSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var (
-		conf  = a.api.Config_Get()
-		ipStr string
-	)
+func (a *App) _adminNetworkCreateSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n := &api.Network{}
+	var netStr string
 
 	err := webutil.NewFormScanner(r.Form).
-		Scan("HubAddress", &conf.HubAddress).
-		Scan("VPNNetwork", &ipStr).
+		Scan("Name", &n.Name).
+		Scan("Network", &netStr).
 		Error()
 	if err != nil {
 		return err
 	}
 
-	if conf.VPNNetwork, err = stringToIP(ipStr); err != nil {
+	n.Network, err = stringToIP(netStr)
+	if err != nil {
 		return err
 	}
-	if err := a.api.Config_Update(conf); err != nil {
+
+	if err := a.api.Network_Create(n); err != nil {
 		return err
 	}
-	return a.redirect(w, r, "/admin/config/")
+
+	return a.redirect(w, r, "/admin/network/view/?NetworkID=%d", n.NetworkID)
+}
+
+func (a *App) _adminNetworkView(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, peers, err := a.formGetNetworkPeers(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/network-view.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+		Peers   []*api.Peer
+	}{s, n, peers})
+}
+
+func (a *App) _adminNetworkDelete(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, peers, err := a.formGetNetworkPeers(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/network-delete.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+		Peers   []*api.Peer
+	}{s, n, peers})
+}
+
+func (a *App) _adminNetworkDeleteSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, err := a.formGetNetwork(r.Form)
+	if err != nil {
+		return err
+	}
+
+	if err = a.api.Network_Delete(n); err != nil {
+		return err
+	}
+	return a.redirect(w, r, "/admin/network/list/")
+}
+
+func (a *App) _adminPeerCreate(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, err := a.formGetNetwork(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/peer-create.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+	}{s, n})
+}
+
+func (a *App) _adminPeerCreateSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	var ipStr string
+
+	p := &api.Peer{}
+	err := webutil.NewFormScanner(r.Form).
+		Scan("NetworkID", &p.NetworkID).
+		Scan("IP", &p.PeerIP).
+		Scan("Name", &p.Name).
+		Scan("PublicIP", &ipStr).
+		Scan("Port", &p.Port).
+		Scan("Relay", &p.Relay).
+		Error()
+	if err != nil {
+		return err
+	}
+
+	if p.PublicIP, err = stringToIP(ipStr); err != nil {
+		return err
+	}
+
+	if err := a.api.Peer_CreateNew(p); err != nil {
+		return err
+	}
+	return a.redirect(w, r, "/admin/peer/view/?NetworkID=%d&PeerIP=%d", p.NetworkID, p.PeerIP)
+}
+
+func (a *App) _adminPeerView(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	net, peer, err := a.formGetPeer(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/peer-view.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+		Peer    *api.Peer
+	}{s, net, peer})
+}
+
+func (a *App) _adminPeerEdit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	net, peer, err := a.formGetPeer(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/peer-edit.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+		Peer    *api.Peer
+	}{s, net, peer})
+}
+
+func (a *App) _adminPeerEditSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	_, peer, err := a.formGetPeer(r.Form)
+	if err != nil {
+		return err
+	}
+
+	var ipStr string
+
+	err = webutil.NewFormScanner(r.Form).
+		Scan("Name", &peer.Name).
+		Scan("PublicIP", &ipStr).
+		Scan("Port", &peer.Port).
+		Scan("Relay", &peer.Relay).
+		Error()
+	if err != nil {
+		return err
+	}
+
+	if peer.PublicIP, err = stringToIP(ipStr); err != nil {
+		return err
+	}
+
+	if err = a.api.Peer_Update(peer); err != nil {
+		return err
+	}
+
+	return a.redirect(w, r, "/admin/peer/view/?NetworkID=%d&PeerIP=%d", peer.NetworkID, peer.PeerIP)
+}
+
+func (a *App) _adminPeerDelete(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, peer, err := a.formGetPeer(r.Form)
+	if err != nil {
+		return err
+	}
+
+	return a.render("/network/peer-delete.html", w, struct {
+		Session *api.Session
+		Network *api.Network
+		Peer    *api.Peer
+	}{s, n, peer})
+}
+
+func (a *App) _adminPeerDeleteSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, peer, err := a.formGetPeer(r.Form)
+	if err != nil {
+		return err
+	}
+	if err := a.api.Peer_Delete(n.NetworkID, peer.PeerIP); err != nil {
+		return err
+	}
+	return a.redirect(w, r, "/admin/network/view/?NetworkID=%d", n.NetworkID)
+}
+
+func (a *App) _adminNetworkHosts(s *api.Session, w http.ResponseWriter, r *http.Request) error {
+	n, peers, err := a.formGetNetworkPeers(r.Form)
+	if err != nil {
+		return err
+	}
+
+	b := strings.Builder{}
+
+	for _, peer := range peers {
+		ip := n.Network
+		ip[3] = peer.PeerIP
+		b.WriteString(netip.AddrFrom4([4]byte(ip)).String())
+		b.WriteString(" ")
+		b.WriteString(peer.Name)
+		b.WriteString("\n")
+	}
+
+	w.Write([]byte(b.String()))
+	return nil
 }
 
 func (a *App) _adminPasswordEdit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
@@ -143,194 +308,61 @@ func (a *App) _adminPasswordSubmit(s *api.Session, w http.ResponseWriter, r *htt
 		return err
 	}
 
-	if err := a.api.Config_UpdatePassword(hash); err != nil {
+	conf.Password = hash
+
+	if err := a.api.Config_Update(conf); err != nil {
 		return err
 	}
 
 	return a.redirect(w, r, "/admin/config/")
 }
 
-func (a *App) _adminHosts(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	conf := a.api.Config_Get()
-
-	peers, err := a.api.Peer_List()
-	if err != nil {
-		return err
-	}
-
-	b := strings.Builder{}
-
-	for _, peer := range peers {
-		ip := conf.VPNNetwork
-		ip[3] = peer.PeerIP
-		b.WriteString(netip.AddrFrom4([4]byte(ip)).String())
-		b.WriteString(" ")
-		b.WriteString(peer.Name)
-		b.WriteString("\n")
-	}
-
-	w.Write([]byte(b.String()))
-	return nil
-}
-
-func (a *App) _adminPeerCreate(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	return a.render("/admin-peer-create.html", w, struct{ Session *api.Session }{s})
-}
-
-func (a *App) _adminPeerCreateSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var ipStr string
-
-	p := &api.Peer{}
-	err := webutil.NewFormScanner(r.Form).
-		Scan("IP", &p.PeerIP).
-		Scan("Name", &p.Name).
-		Scan("PublicIP", &ipStr).
-		Scan("Port", &p.Port).
-		Scan("Relay", &p.Relay).
-		Error()
-	if err != nil {
-		return err
-	}
-
-	if p.PublicIP, err = stringToIP(ipStr); err != nil {
-		return err
-	}
-
-	if err := a.api.Peer_CreateNew(p); err != nil {
-		return err
-	}
-	return a.redirect(w, r, "/admin/peer/view/?PeerIP=%d", p.PeerIP)
-}
-
-func (a *App) _adminPeerView(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var peerIP byte
-	err := webutil.NewFormScanner(r.Form).Scan("PeerIP", &peerIP).Error()
-	if err != nil {
-		return err
-	}
-
-	peer, err := a.api.Peer_Get(peerIP)
-	if err != nil {
-		return err
-	}
-
-	return a.render("/admin-peer-view.html", w, struct {
-		Session *api.Session
-		Peer    *api.Peer
-	}{s, peer})
-}
-
-func (a *App) _adminPeerEdit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var peerIP byte
-	err := webutil.NewFormScanner(r.Form).Scan("PeerIP", &peerIP).Error()
-	if err != nil {
-		return err
-	}
-
-	peer, err := a.api.Peer_Get(peerIP)
-	if err != nil {
-		return err
-	}
-
-	return a.render("/admin-peer-edit.html", w, struct {
-		Session *api.Session
-		Peer    *api.Peer
-	}{s, peer})
-}
-
-func (a *App) _adminPeerEditSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var (
-		peerIP byte
-		ipStr  string
-	)
-
-	err := webutil.NewFormScanner(r.Form).Scan("PeerIP", &peerIP).Error()
-	if err != nil {
-		return err
-	}
-
-	peer, err := a.api.Peer_Get(peerIP)
-	if err != nil {
-		return err
-	}
-	err = webutil.NewFormScanner(r.Form).
-		Scan("Name", &peer.Name).
-		Scan("PublicIP", &ipStr).
-		Scan("Port", &peer.Port).
-		Scan("Relay", &peer.Relay).
-		Error()
-	if err != nil {
-		return err
-	}
-
-	if peer.PublicIP, err = stringToIP(ipStr); err != nil {
-		return err
-	}
-
-	if err = a.api.Peer_Update(peer); err != nil {
-		return err
-	}
-
-	return a.redirect(w, r, "/admin/peer/view/?PeerIP=%d", peer.PeerIP)
-}
-
-func (a *App) _adminPeerDelete(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var peerIP byte
-	err := webutil.NewFormScanner(r.Form).Scan("PeerIP", &peerIP).Error()
-	if err != nil {
-		return err
-	}
-
-	peer, err := a.api.Peer_Get(peerIP)
-	if err != nil {
-		return err
-	}
-
-	return a.render("/admin-peer-delete.html", w, struct {
-		Session *api.Session
-		Peer    *api.Peer
-	}{s, peer})
-}
-
-func (a *App) _adminPeerDeleteSubmit(s *api.Session, w http.ResponseWriter, r *http.Request) error {
-	var peerIP byte
-	err := webutil.NewFormScanner(r.Form).Scan("PeerIP", &peerIP).Error()
-	if err != nil {
-		return err
-	}
-
-	if err := a.api.Peer_Delete(peerIP); err != nil {
-		return err
-	}
-
-	return a.redirect(w, r, "/admin/peer/list/")
-}
-
 func (a *App) _peerInit(peer *api.Peer, w http.ResponseWriter, r *http.Request) error {
 	args := m.PeerInitArgs{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		return err
 	}
 
-	conf, err := a.api.Peer_Init(peer, args)
+	net, err := a.api.Network_Get(peer.NetworkID)
 	if err != nil {
 		return err
 	}
 
-	return a.sendJSON(w, conf)
+	if err := a.api.Peer_Init(peer, args); err != nil {
+		return err
+	}
+
+	resp := m.PeerInitResp{
+		PeerIP:  peer.PeerIP,
+		Network: net.Network,
+	}
+
+	resp.NetworkState.Peers, err = a.peersArray(net.NetworkID)
+	if err != nil {
+		return err
+	}
+
+	return a.sendJSON(w, resp)
 }
 
 func (a *App) _peerFetchState(peer *api.Peer, w http.ResponseWriter, r *http.Request) error {
-	peers, err := a.api.Peer_List()
+
+	peers, err := a.peersArray(peer.NetworkID)
 	if err != nil {
 		return err
 	}
+	return a.sendJSON(w, m.NetworkState{Peers: peers})
+}
 
-	state := m.NetworkState{}
+func (a *App) peersArray(networkID int64) (peers [256]*m.Peer, err error) {
+	l, err := a.api.Peer_List(networkID)
+	if err != nil {
+		return peers, err
+	}
 
-	for _, p := range peers {
+	for _, p := range l {
 		if len(p.PubKey) != 0 {
-			state.Peers[p.PeerIP] = &m.Peer{
+			peers[p.PeerIP] = &m.Peer{
 				PeerIP:     p.PeerIP,
 				Version:    p.Version,
 				Name:       p.Name,
@@ -343,5 +375,5 @@ func (a *App) _peerFetchState(peer *api.Peer, w http.ResponseWriter, r *http.Req
 		}
 	}
 
-	return a.sendJSON(w, state)
+	return
 }

hub/routes.go

@@ -9,14 +9,17 @@ func (a *App) registerRoutes() {
 	a.handleNotSignedIn("GET  /sign-in/", a._signin)
 	a.handleNotSignedIn("POST /sign-in/", a._signinSubmit)
 
-	a.handleSignedIn("GET  /admin/config/", a._adminConfig)
-	a.handleSignedIn("GET  /admin/config/edit/", a._adminConfigEdit)
-	a.handleSignedIn("POST /admin/config/edit/", a._adminConfigEditSubmit)
 	a.handleSignedIn("GET  /admin/sign-out/", a._adminSignOut)
 	a.handleSignedIn("POST /admin/sign-out/", a._adminSignOutSubmit)
-	a.handleSignedIn("GET  /admin/password/edit/", a._adminPasswordEdit)
-	a.handleSignedIn("POST /admin/password/edit/", a._adminPasswordSubmit)
-	a.handleSignedIn("GET  /admin/peer/hosts/", a._adminHosts)
+
+	a.handleSignedIn("GET  /admin/network/list/", a._adminNetworkList)
+	a.handleSignedIn("GET  /admin/network/create/", a._adminNetworkCreate)
+	a.handleSignedIn("POST /admin/network/create/", a._adminNetworkCreateSubmit)
+	a.handleSignedIn("GET  /admin/network/delete/", a._adminNetworkDelete)
+	a.handleSignedIn("POST /admin/network/delete/", a._adminNetworkDeleteSubmit)
+
+	a.handleSignedIn("GET  /admin/network/view/", a._adminNetworkView)
+	a.handleSignedIn("GET  /admin/network/hosts/", a._adminNetworkHosts)
 	a.handleSignedIn("GET  /admin/peer/create/", a._adminPeerCreate)
 	a.handleSignedIn("POST /admin/peer/create/", a._adminPeerCreateSubmit)
 	a.handleSignedIn("GET  /admin/peer/view/", a._adminPeerView)
@@ -25,6 +28,9 @@ func (a *App) registerRoutes() {
 	a.handleSignedIn("GET  /admin/peer/delete/", a._adminPeerDelete)
 	a.handleSignedIn("POST /admin/peer/delete/", a._adminPeerDeleteSubmit)
 
+	a.handleSignedIn("GET  /admin/password/edit/", a._adminPasswordEdit)
+	a.handleSignedIn("POST /admin/password/edit/", a._adminPasswordSubmit)
+
 	a.handlePeer("POST /peer/init/", a._peerInit)
 	a.handlePeer("GET /peer/fetch-state/", a._peerFetchState)
 }

hub/templates/admin-config-edit.html

@@ -1,20 +0,0 @@
-{{define "body" -}}
-<h2>Config</h2>
-
-<form method="POST">
-  <input type="hidden" name="CSRF" value="{{.Session.CSRF}}">
-  <p>
-    <label>Hub Address</label><br>
-    <input type="url" name="HubAddress" value="{{.Config.HubAddress}}">
-  </p>
-  <p>
-    <label>VPN Network</label><br>
-    <input type="text" name="VPNNetwork" value="{{ipToString .Config.VPNNetwork}}">
-  </p>
-  <p>
-    <button type="submit">Save</button>
-    <a href="/admin/config/">Cancel</a>
-  </p>
-</form>
-
-{{- end}}

hub/templates/admin-network-create.html

@@ -0,0 +1,19 @@
+{{define "body" -}}
+<h2>Create Network</h2>
+
+<form method="POST">
+  <input type="hidden" name="CSRF" value="{{.Session.CSRF}}">
+  <p>
+    <label>Name</label><br>
+    <input type="text" name="Name">
+  </p>
+  <p>
+    <label>Network /24</label><br>
+    <input type="text" name="Network">
+  </p>
+  <p>
+    <button type="submit">Save</button>
+    <a href="/admin/network/list/">Cancel</a>
+  </p>
+</form>
+{{- end}}

hub/templates/admin-network-list.html

@@ -0,0 +1,38 @@
+{{define "body" -}}
+<h2>Networks</h2>
+
+<p>
+  <a href="/admin/network/create/">Create</a>
+</p>
+
+{{if .Networks -}}
+<table>
+  <thead>
+    <tr>
+      <th>Name</th>
+      <th>Network</th>
+    </tr>
+  </thead>
+  <tbody>
+  {{range .Networks -}}
+  <tr>
+    <td>
+      <a href="/admin/network/view/?NetworkID={{.NetworkID}}">
+        {{.Name}}
+      </a>
+    </td>
+    <td>{{ipToString .Network}}</td>
+  </tr>
+  </tbody>
+  {{- end}}
+</table>
+{{- else}}
+<p>No networks.</p>
+{{- end}}
+
+<h3>Settings</h3>
+
+<ul>
+  <li><a href="/admin/password/edit/">Password</a></li>
+</ul>
+{{- end}}

hub/templates/admin-peer-delete.html

@@ -1,36 +0,0 @@
-{{define "body" -}}
-<h2>Delete Peer</h2>
-
-{{with .Peer -}}
-<form method="POST">
-  <input type="hidden" name="CSRF" value="{{$.Session.CSRF}}">
-  <p>
-    <label>Peer IP</label><br>
-    <input type="number" name="PeerIP" value="{{.PeerIP}}" disabled>
-  </p>
-  <p>
-    <label>Name</label><br>
-    <input type="text" value="{{.Name}}" disabled>
-  </p>
-  <p>
-    <label>Public IP</label><br>
-    <input type="text" value="{{ipToString .PublicIP}}" disabled>
-  </p>
-  <p>
-    <label>Port</label><br>
-    <input type="number" value="{{.Port}}" disabled>
-  </p>
-  <p>
-    <label>
-      <input type="checkbox" {{if .Relay}}checked{{end}} disabled>
-      Relay
-    </label>
-  </p>
-  <p>
-    <button type="submit">Delete</button>
-    <a href="/admin/peer/view/?PeerIP={{.PeerIP}}">Cancel</a>
-  </p>
-</form>
-{{- end}}
-
-{{- end}}

hub/templates/admin-peer-init.html

@@ -1,13 +0,0 @@
-{{define "body" -}}
-<h2>Initialize Peer</h2>
-
-<p>
-  Configure the peer with the following URL:
-</p>
-<pre>
-  {{.HubAddress}}/peer/init/?Code={{.Code}}
-</pre>
-<p>
-  <a href="/admin/config/">Done</a>
-</p>
-{{- end}}

hub/templates/admin-peer-intent.html

@@ -1,13 +0,0 @@
-{{define "body" -}}
-<h2>Create Peer</h2>
-
-<p>
-  Configure the peer with the following URL:
-</p>
-<pre>
-  {{.HubAddress}}/peer/create/?Code={{.Code}}
-</pre>
-<p>
-  <a href="/admin/config/">Done</a>
-</p>
-{{- end}}

hub/templates/admin-sign-out.html

@@ -5,7 +5,7 @@
   <input type="hidden" name="CSRF" value="{{.Session.CSRF}}">
   <p>
     <button type="submit">Sign Out</button>
-    <a href="/admin/config/">Cancel</a>
+    <a href="/">Cancel</a>
   </p>
 </form>
 {{- end}}

hub/templates/base.html

@@ -10,7 +10,7 @@
     <h1>VPPN</h1>
     <nav>
       {{if .Session.SignedIn -}}
-      <a href="/admin/config/">Home</a> /
+      <a href="/admin/networks/list/">Home</a> /
       <a href="/admin/sign-out/">Sign out</a>
       {{- end}}
     </nav>

hub/templates/network/base.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>VPPN Hub</title>
+  <link rel="stylesheet" href="/static/new.min.css">
+    <link rel="stylesheet" href="/static/custom.css">
+</head>
+<body>
+  <header>
+    <h1>VPPN</h1>
+    <nav>
+      {{if .Session.SignedIn -}}
+      <a href="/admin/networks/list/">Home</a> /
+      <a href="/admin/sign-out/">Sign out</a>
+      {{- end}}
+    </nav>
+  </header>
+  <h2>
+    Network:
+    <a href="/admin/network/view/?NetworkID={{.Network.NetworkID}}">{{.Network.Name}}</a>
+  </h2>
+
+  {{block "body" .}}There's nothing here.{{end}}
+</body>
+</html>

hub/templates/network/network-delete.html

@@ -0,0 +1,16 @@
+{{define "body" -}}
+<h3>Delete</h3>
+
+{{if .Peers -}}
+<p>You must first delete all peers.</p>
+{{- else -}}
+<form method="POST">
+  <input type="hidden" name="CSRF" value="{{.Session.CSRF}}">
+  <input type="hidden" name="NetworkID" value="{{.Network.NetworkID}}">
+  <p>
+    <button type="submit">Delete</button>
+    <a href="/admin/network/view/?NetworkID={{.Network.NetworkID}}">Cancel</a>
+  </p>
+</form>
+{{- end}}
+{{- end}}

hub/templates/network/network-view.html

@@ -1,27 +1,20 @@
 {{define "body" -}}
-<h2>Config</h2>
-
 <p>
-  <a href="/admin/config/edit/">Edit</a> /
-  <a href="/admin/password/edit/">Change Password</a>
+  <a href="/admin/network/delete/?NetworkID={{.Network.NetworkID}}">Delete</a> /
+  <a href="/admin/network/hosts/?NetworkID={{.Network.NetworkID}}">Hosts</a>
 </p>
 
 <table class="def-list">
   <tr>
-    <td>Hub Address</td>
-    <td>{{.Config.HubAddress}}</td>
-  </tr>
-  <tr>
-    <td>VPN Network</td>
-    <td>{{ipToString .Config.VPNNetwork}}</td>
+    <td>Network</td>
+    <td>{{ipToString .Network.Network}}/24</td>
   </tr>
 </table>
 
-<h2>Peers</h2>
+<h3>Peers</h3>
 
 <p>
-  <a href="/admin/peer/create/">Add Peer</a> /
-  <a href="/admin/peer/hosts/">Hosts</a>
+  <a href="/admin/peer/create/?NetworkID={{.Network.NetworkID}}">Create</a>
 </p>
 
 {{if .Peers -}}
@@ -39,7 +32,7 @@
   {{range .Peers -}}
   <tr>
     <td>
-      <a href="/admin/peer/view/?PeerIP={{.PeerIP}}">
+      <a href="/admin/peer/view/?NetworkID={{$.Network.NetworkID}}&PeerIP={{.PeerIP}}">
         {{.PeerIP}}
       </a>
     </td>

hub/templates/network/peer-create.html

@@ -1,8 +1,9 @@
 {{define "body" -}}
-<h2>New Peer</h2>
+<h3>New Peer</h3>
 
 <form method="POST">
   <input type="hidden" name="CSRF" value="{{.Session.CSRF}}">
+  <input type="hidden" name="NetworkID" value="{{.Network.NetworkID}}">
   <p>
     <label>IP</label><br>
     <input type="number" name="IP" min="1" max="255" value="0">
@@ -27,7 +28,7 @@
   </p>
   <p>
     <button type="submit">Save</button>
-    <a href="/admin/config/">Cancel</a>
+    <a href="/admin/network/view/?NetworkID={{.Network.NetworkID}}">Cancel</a>
   </p>
 </form>
 

hub/templates/network/peer-delete.html

@@ -0,0 +1,15 @@
+{{define "body" -}}
+<h3>Delete {{.Peer.Name}}</h3>
+
+{{with .Peer -}}
+<form method="POST">
+  <input type="hidden" name="CSRF" value="{{$.Session.CSRF}}">
+  <input type="hidden" name="NetworkID" value="{{.NetworkID}}">
+  <input type="hidden" name="NetworkID" value="{{.PeerIP}}">
+  <p>
+    <button type="submit">Delete</button>
+    <a href="/admin/peer/view/?PeerIP={{.PeerIP}}&NetworkID={{.NetworkID}}">Cancel</a>
+  </p>
+</form>
+{{- end}}
+{{- end}}

hub/templates/network/peer-edit.html

@@ -6,7 +6,7 @@
   <input type="hidden" name="CSRF" value="{{$.Session.CSRF}}">
   <p>
     <label>Peer IP</label><br>
-    <input type="number" name="PeerIP" value="{{.PeerIP}}" disabled>
+    <input type="text" value="{{.PeerIP}}" disabled>
   </p>
   <p>
     <label>Name</label><br>
@@ -28,9 +28,8 @@
   </p>
   <p>
     <button type="submit">Save</button>
-    <a href="/admin/peer/view/?PeerIP={{.PeerIP}}">Cancel</a>
+    <a href="/admin/peer/view/?NetworkID={{$.Network.NetworkID}}&PeerIP={{.PeerIP}}">Cancel</a>
   </p>
 </form>
 {{- end}}
-
 {{- end}}

hub/templates/network/peer-view.html

@@ -1,20 +1,25 @@
 {{define "body" -}}
-<h2>Peer</h2>
-
+<h3>{{.Peer.Name}}</h3>
 <p>
-  <a href="/admin/peer/edit/?PeerIP={{.Peer.PeerIP}}">Edit</a> /
-  <a href="/admin/peer/delete/?PeerIP={{.Peer.PeerIP}}">Delete</a>
+  <a href="/admin/peer/edit/?NetworkID={{.Network.NetworkID}}&PeerIP={{.Peer.PeerIP}}">Edit</a> /
+  <a href="/admin/peer/delete/?NetworkID={{.Network.NetworkID}}&PeerIP={{.Peer.PeerIP}}">Delete</a>
 </p>
 
 {{with .Peer -}}
 <table class="def-list">
   <tr><td>Peer IP</td><td>{{.PeerIP}}</td></tr>
-  <tr><td>Name</td><td>{{.Name}}</td></tr>
   <tr><td>Public IP</td><td>{{ipToString .PublicIP}}</td></tr>
   <tr><td>Port</td><td>{{.Port}}</td></tr>
   <tr><td>Relay</td><td>{{if .Relay}}T{{else}}F{{end}}</td></tr>
-  <tr><td>API Key</td><td>{{.APIKey}}</td></tr>
+</td></tr>
 </table>
+
+<details>
+  <summary>API Key</summary>
+  <p>{{.APIKey}}</p>
+</details>
+
+
 {{- end}}
 
 {{- end}}

m/models.go

@@ -6,12 +6,10 @@ type PeerInitArgs struct {
 	PubSignKey []byte
 }
 
-type PeerConfig struct {
-	PeerIP   byte
-	Network  []byte
-	PublicIP []byte
-	Port     uint16
-	Relay    bool
+type PeerInitResp struct {
+	PeerIP       byte
+	Network      []byte
+	NetworkState NetworkState
 }
 
 type Peer struct {

peer/files.go

@@ -9,7 +9,8 @@ import (
 )
 
 type localConfig struct {
-	m.PeerConfig
+	PeerIP      byte
+	Network     []byte
 	PubKey      []byte
 	PrivKey     []byte
 	PubSignKey  []byte
@@ -25,11 +26,11 @@ func configDir(netName string) string {
 }
 
 func peerConfigPath(netName string) string {
-	return filepath.Join(configDir(netName), "peer-config.json")
+	return filepath.Join(configDir(netName), "config.json")
 }
 
 func peerStatePath(netName string) string {
-	return filepath.Join(configDir(netName), "peer-state.json")
+	return filepath.Join(configDir(netName), "state.json")
 }
 
 func storeJson(x any, outPath string) error {

peer/files_test.go

@@ -16,12 +16,12 @@ func TestFilePaths(t *testing.T) {
 	}
 
 	path := peerConfigPath("netName")
-	if path != filepath.Join(confDir, "peer-config.json") {
+	if path != filepath.Join(confDir, "config.json") {
 		t.Fatal(path)
 	}
 
 	path = peerStatePath("netName")
-	if path != filepath.Join(confDir, "peer-state.json") {
+	if path != filepath.Join(confDir, "state.json") {
 		t.Fatal(path)
 	}
 }

peer/main.go

@@ -6,7 +6,7 @@ import (
 )
 
 func Main() {
-	conf := peerConfig{}
+	conf := mainArgs{}
 
 	flag.StringVar(&conf.NetName, "name", "", "[REQUIRED] The network name.")
 	flag.StringVar(&conf.HubAddress, "hub-address", "", "[REQUIRED] The hub address.")

peer/mcreader.go

@@ -65,6 +65,7 @@ func runMCReaderInner(
 			SrcIP:   h.SourceIP,
 			SrcAddr: remoteAddr,
 		}
+		logf("Got discovery packet from peer %d.", h.SourceIP)
 		handleControlMsg(h.SourceIP, msg)
 	}
 }

peer/mcwriter.go

@@ -45,6 +45,7 @@ func runMCWriter(localIP byte, signingKey []byte) {
 	}
 
 	for range time.Tick(broadcastInterval) {
+		log.Printf("[MCWriter] Broadcasting on %v...", multicastAddr)
 		_, err := conn.WriteToUDP(discoveryPacket, multicastAddr)
 		if err != nil {
 			log.Printf("[MCWriter] Failed to write multicast: %v", err)

peer/peer.go

@@ -25,35 +25,42 @@ type peerMain struct {
 	super      *supervisor
 }
 
-type peerConfig struct {
+type mainArgs struct {
 	NetName    string
 	HubAddress string
 	APIKey     string
 }
 
-func newPeerMain(conf peerConfig) *peerMain {
+func newPeerMain(args mainArgs) *peerMain {
 	logf := func(s string, args ...any) {
 		log.Printf("[Main] "+s, args...)
 	}
 
-	config, err := loadPeerConfig(conf.NetName)
+	config, err := loadPeerConfig(args.NetName)
 	if err != nil {
 		logf("Failed to load configuration: %v", err)
 		logf("Initializing...")
-		initPeerWithHub(conf)
+		initPeerWithHub(args)
 
-		config, err = loadPeerConfig(conf.NetName)
+		config, err = loadPeerConfig(args.NetName)
 		if err != nil {
 			log.Fatalf("Failed to load configuration: %v", err)
 		}
 	}
 
-	iface, err := openInterface(config.Network, config.PeerIP, conf.NetName)
+	state, err := loadNetworkState(args.NetName)
+	if err != nil {
+		log.Fatalf("Failed to load network state: %v", err)
+	}
+
+	iface, err := openInterface(config.Network, config.PeerIP, args.NetName)
 	if err != nil {
 		log.Fatalf("Failed to open interface: %v", err)
 	}
 
-	myAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%d", config.Port))
+	localPeer := state.Peers[config.PeerIP]
+
+	myAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%d", localPeer.Port))
 	if err != nil {
 		log.Fatalf("Failed to resolve UDP address: %v", err)
 	}
@@ -80,19 +87,19 @@ func newPeerMain(conf peerConfig) *peerMain {
 	}
 
 	var localAddr netip.AddrPort
-	ip, localAddrValid := netip.AddrFromSlice(config.PublicIP)
+	ip, localAddrValid := netip.AddrFromSlice(localPeer.PublicIP)
 	if localAddrValid {
-		localAddr = netip.AddrPortFrom(ip, config.Port)
+		localAddr = netip.AddrPortFrom(ip, localPeer.Port)
 	}
 
-	rt := newRoutingTable(config.PeerIP, localAddr)
+	rt := newRoutingTable(localPeer.PeerIP, localAddr)
 	rtPtr := &atomic.Pointer[routingTable]{}
 	rtPtr.Store(&rt)
 
 	ifReader := newIFReader(iface, writeToUDPAddrPort, rtPtr)
 	super := newSupervisor(writeToUDPAddrPort, rtPtr, config.PrivKey)
 	connReader := newConnReader(conn.ReadFromUDPAddrPort, writeToUDPAddrPort, iface, super.HandleControlMsg, rtPtr)
-	hubPoller, err := newHubPoller(config.PeerIP, conf.NetName, conf.HubAddress, conf.APIKey, super.HandleControlMsg)
+	hubPoller, err := newHubPoller(config.PeerIP, args.NetName, args.HubAddress, args.APIKey, super.HandleControlMsg)
 	if err != nil {
 		log.Fatalf("Failed to create hub poller: %v", err)
 	}
@@ -123,22 +130,22 @@ func (p *peerMain) Run() {
 	select {}
 }
 
-func initPeerWithHub(conf peerConfig) {
+func initPeerWithHub(args mainArgs) {
 	keys := generateKeys()
 
-	initURL, err := url.Parse(conf.HubAddress)
+	initURL, err := url.Parse(args.HubAddress)
 	if err != nil {
 		log.Fatalf("Failed to parse hub URL: %v", err)
 	}
 	initURL.Path = "/peer/init/"
 
-	args := m.PeerInitArgs{
+	initArgs := m.PeerInitArgs{
 		EncPubKey:  keys.PubKey,
 		PubSignKey: keys.PubSignKey,
 	}
 
 	buf := &bytes.Buffer{}
-	if err := json.NewEncoder(buf).Encode(args); err != nil {
+	if err := json.NewEncoder(buf).Encode(initArgs); err != nil {
 		log.Fatalf("Failed to encode init args: %v", err)
 	}
 
@@ -146,7 +153,7 @@ func initPeerWithHub(conf peerConfig) {
 	if err != nil {
 		log.Fatalf("Failed to construct request: %v", err)
 	}
-	req.SetBasicAuth("", conf.APIKey)
+	req.SetBasicAuth("", args.APIKey)
 
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
@@ -159,17 +166,24 @@ func initPeerWithHub(conf peerConfig) {
 		log.Fatalf("Failed to read response body: %v", err)
 	}
 
-	peerConfig := localConfig{}
-	if err := json.Unmarshal(data, &peerConfig.PeerConfig); err != nil {
+	initResp := m.PeerInitResp{}
+	if err := json.Unmarshal(data, &initResp); err != nil {
 		log.Fatalf("Failed to parse configuration: %v\n%s", err, data)
 	}
 
-	peerConfig.PubKey = keys.PubKey
-	peerConfig.PrivKey = keys.PrivKey
-	peerConfig.PubSignKey = keys.PubSignKey
-	peerConfig.PrivSignKey = keys.PrivSignKey
+	config := localConfig{}
+	config.PeerIP = initResp.PeerIP
+	config.Network = initResp.Network
+	config.PubKey = keys.PubKey
+	config.PrivKey = keys.PrivKey
+	config.PubSignKey = keys.PubSignKey
+	config.PrivSignKey = keys.PrivSignKey
 
-	if err := storePeerConfig(conf.NetName, peerConfig); err != nil {
+	if err := storeNetworkState(args.NetName, initResp.NetworkState); err != nil {
+		log.Fatalf("Failed to store network state: %v", err)
+	}
+
+	if err := storePeerConfig(args.NetName, config); err != nil {
 		log.Fatalf("Failed to store configuration: %v", err)
 	}