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Cleanup - WIP

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This commit is contained in:
jdl
2026-06-07 19:42:04 +02:00
parent b8344a20b9
commit e9dffee2de
11 changed files with 310 additions and 42 deletions
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46
cmd/vppn/main.go
View File

@@ -1,8 +1,48 @@
package main
import "log"
import (
"flag"
"log"
"os"
"path/filepath"
"vppn/peer"
)
func main() {
// TODO: construct peer.App and call Run (audit C1).
log.Fatal("not yet implemented")
log.SetFlags(0)
name := flag.String("name", "", "network name (required)")
hub := flag.String("hub", "", "hub base URL (required)")
apiKey := flag.String("api-key", "", "API key (required)")
flag.Parse()
if *name == "" || *hub == "" || *apiKey == "" {
flag.Usage()
os.Exit(1)
}
statePath := networkStatePath(*name)
state, err := peer.LoadOrInit(statePath, *hub, *apiKey)
if err != nil {
log.Fatalf("init: %v", err)
}
app, err := peer.New(state, *hub, *apiKey, *name)
if err != nil {
log.Fatalf("start: %v", err)
}
if err := app.Run(); err != nil {
log.Fatalf("run: %v", err)
}
}
func networkStatePath(name string) string {
home, err := os.UserHomeDir()
if err != nil {
return filepath.Join(".vppn", name, "state.json")
}
return filepath.Join(home, ".vppn", name, "state.json")
}

19
hub/api/db/generated.go
View File

@@ -345,14 +345,13 @@ type Peer struct {
APIKey string
Name string
Addr4 []byte
Port4 uint16
Addr6 []byte
Port6 uint16
Port uint16
Relay bool
WGPubKey []byte
}
const Peer_SelectQuery = "SELECT NetworkID,PeerIP,Version,APIKey,Name,Addr4,Port4,Addr6,Port6,Relay,WGPubKey FROM peers"
const Peer_SelectQuery = "SELECT NetworkID,PeerIP,Version,APIKey,Name,Addr4,Addr6,Port,Relay,WGPubKey FROM peers"
func Peer_Insert(
tx TX,
@@ -363,7 +362,7 @@ func Peer_Insert(
return err
}
_, err = tx.Exec("INSERT INTO peers(NetworkID,PeerIP,Version,APIKey,Name,Addr4,Port4,Addr6,Port6,Relay,WGPubKey) VALUES(?,?,?,?,?,?,?,?,?,?,?)", row.NetworkID, row.PeerIP, row.Version, row.APIKey, row.Name, row.Addr4, row.Port4, row.Addr6, row.Port6, row.Relay, row.WGPubKey)
_, err = tx.Exec("INSERT INTO peers(NetworkID,PeerIP,Version,APIKey,Name,Addr4,Addr6,Port,Relay,WGPubKey) VALUES(?,?,?,?,?,?,?,?,?,?)", row.NetworkID, row.PeerIP, row.Version, row.APIKey, row.Name, row.Addr4, row.Addr6, row.Port, row.Relay, row.WGPubKey)
return err
}
@@ -376,7 +375,7 @@ func Peer_Update(
return err
}
result, err := tx.Exec("UPDATE peers SET Version=?,Name=?,Addr4=?,Port4=?,Addr6=?,Port6=?,Relay=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.Name, row.Addr4, row.Port4, row.Addr6, row.Port6, row.Relay, row.NetworkID, row.PeerIP)
result, err := tx.Exec("UPDATE peers SET Version=?,Name=?,Addr4=?,Addr6=?,Port=?,Relay=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.Name, row.Addr4, row.Addr6, row.Port, row.Relay, row.NetworkID, row.PeerIP)
if err != nil {
return err
}
@@ -404,7 +403,7 @@ func Peer_UpdateFull(
return err
}
result, err := tx.Exec("UPDATE peers SET Version=?,APIKey=?,Name=?,Addr4=?,Port4=?,Addr6=?,Port6=?,Relay=?,WGPubKey=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.APIKey, row.Name, row.Addr4, row.Port4, row.Addr6, row.Port6, row.Relay, row.WGPubKey, row.NetworkID, row.PeerIP)
result, err := tx.Exec("UPDATE peers SET Version=?,APIKey=?,Name=?,Addr4=?,Addr6=?,Port=?,Relay=?,WGPubKey=? WHERE NetworkID=? AND PeerIP=?", row.Version, row.APIKey, row.Name, row.Addr4, row.Addr6, row.Port, row.Relay, row.WGPubKey, row.NetworkID, row.PeerIP)
if err != nil {
return err
}
@@ -456,8 +455,8 @@ func Peer_Get(
err error,
) {
row = &Peer{}
r := tx.QueryRow("SELECT NetworkID,PeerIP,Version,APIKey,Name,Addr4,Port4,Addr6,Port6,Relay,WGPubKey FROM peers WHERE NetworkID=? AND PeerIP=?", NetworkID, PeerIP)
if err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Port4, &row.Addr6, &row.Port6, &row.Relay, &row.WGPubKey); err != nil {
r := tx.QueryRow("SELECT NetworkID,PeerIP,Version,APIKey,Name,Addr4,Addr6,Port,Relay,WGPubKey FROM peers WHERE NetworkID=? AND PeerIP=?", NetworkID, PeerIP)
if err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Addr6, &row.Port, &row.Relay, &row.WGPubKey); err != nil {
row = nil
}
return
@@ -473,7 +472,7 @@ func Peer_GetWhere(
) {
row = &Peer{}
r := tx.QueryRow(query, args...)
if err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Port4, &row.Addr6, &row.Port6, &row.Relay, &row.WGPubKey); err != nil {
if err = r.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Addr6, &row.Port, &row.Relay, &row.WGPubKey); err != nil {
row = nil
}
return
@@ -495,7 +494,7 @@ func Peer_Iterate(
defer rows.Close()
for rows.Next() {
row := &Peer{}
err := rows.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Port4, &row.Addr6, &row.Port6, &row.Relay, &row.WGPubKey)
err := rows.Scan(&row.NetworkID, &row.PeerIP, &row.Version, &row.APIKey, &row.Name, &row.Addr4, &row.Addr6, &row.Port, &row.Relay, &row.WGPubKey)
if !yield(row, err) {
return
}

12
hub/api/db/sanitize-validate.go
View File

@@ -69,11 +69,8 @@ func Peer_Sanitize(p *Peer) {
p.Addr6 = addr.AsSlice()
}
}
if p.Port4 == 0 {
p.Port4 = 456
}
if len(p.Addr6) != 0 && p.Port6 == 0 {
p.Port6 = 456
if p.Port == 0 {
p.Port = 51820
}
}
@@ -87,11 +84,8 @@ func Peer_Validate(p *Peer) error {
if _, ok := netip.AddrFromSlice(p.Addr6); !ok {
return ErrInvalidIP
}
if p.Port6 == 0 {
return ErrInvalidPort
}
}
if p.Port4 == 0 {
if p.Port == 0 {
return ErrInvalidPort
}

3
hub/api/db/tables.defs
View File

@@ -16,9 +16,8 @@ TABLE peers OF Peer (
APIKey string NoUpdate,
Name string,
Addr4 []byte,
Port4 uint16,
Addr6 []byte,
Port6 uint16,
Port uint16,
Relay bool,
WGPubKey []byte NoUpdate
);

3
hub/api/migrations/2024-11-30-init.sql
View File

@@ -16,9 +16,8 @@ CREATE TABLE peers (
APIKey TEXT NOT NULL UNIQUE, -- Peer's secret API key.
Name TEXT NOT NULL UNIQUE, -- For humans.
Addr4 BLOB NOT NULL,
Port4 INTEGER NOT NULL,
Addr6 BLOB NOT NULL,
Port6 INTEGER NOT NULL,
Port INTEGER NOT NULL,
Relay INTEGER NOT NULL DEFAULT 0, -- Boolean if peer will forward packets.
WGPubKey BLOB NOT NULL,
PRIMARY KEY(NetworkID, PeerIP)

9
hub/handlers.go
View File

@@ -150,9 +150,8 @@ func (a *App) _adminPeerCreateSubmit(s *api.Session, w http.ResponseWriter, r *h
Scan("IP", &p.PeerIP).
Scan("Name", &p.Name).
Scan("Addr4", &addr4Str).
Scan("Port4", &p.Port4).
Scan("Addr6", &addr6Str).
Scan("Port6", &p.Port6).
Scan("Port", &p.Port).
Scan("Relay", &p.Relay).
Error()
if err != nil {
@@ -209,9 +208,8 @@ func (a *App) _adminPeerEditSubmit(s *api.Session, w http.ResponseWriter, r *htt
err = webutil.NewFormScanner(r.Form).
Scan("Name", &peer.Name).
Scan("Addr4", &addr4Str).
Scan("Port4", &peer.Port4).
Scan("Addr6", &addr6Str).
Scan("Port6", &peer.Port6).
Scan("Port", &peer.Port).
Scan("Relay", &peer.Relay).
Error()
if err != nil {
@@ -359,9 +357,8 @@ func (a *App) peersArray(networkID int64) (peers [256]*m.Peer, err error) {
Version: p.Version,
Name: p.Name,
Addr4: p.Addr4,
Port4: p.Port4,
Addr6: p.Addr6,
Port6: p.Port6,
Port: p.Port,
Relay: p.Relay,
WGPubKey: p.WGPubKey,
}

3
m/models.go
View File

@@ -16,9 +16,8 @@ type Peer struct {
Version int64
Name string
Addr4 []byte
Port4 uint16
Addr6 []byte
Port6 uint16
Port uint16
Relay bool
WGPubKey []byte
}

4
peer/hub_poller.go
View File

@@ -130,12 +130,12 @@ func hubPeerFrom(pubKey wgtypes.Key, vpnIP netip.Addr, p *m.Peer) HubPeer {
var ep4, ep6 netip.AddrPort
if len(p.Addr4) > 0 {
if addr, ok := netip.AddrFromSlice(p.Addr4); ok {
ep4 = netip.AddrPortFrom(addr.Unmap(), p.Port4)
ep4 = netip.AddrPortFrom(addr.Unmap(), p.Port)
}
}
if len(p.Addr6) > 0 {
if addr, ok := netip.AddrFromSlice(p.Addr6); ok {
ep6 = netip.AddrPortFrom(addr, p.Port6)
ep6 = netip.AddrPortFrom(addr, p.Port)
}
}
return HubPeer{

4
peer/hubpoller.go
View File

@@ -116,7 +116,7 @@ func (hp *HubPoller) applyPeerConfig(peer *m.Peer) {
if peer == nil || len(peer.WGPubKey) != wgtypes.KeyLen {
return
}
if len(peer.Addr4) == 0 || peer.Port4 == 0 {
if len(peer.Addr4) == 0 || peer.Port == 0 {
return
}
@@ -131,7 +131,7 @@ func (hp *HubPoller) applyPeerConfig(peer *m.Peer) {
hp.logf("Invalid public IP for peer %d", peer.PeerIP)
return
}
endpoint := netip.AddrPortFrom(ip.Unmap(), peer.Port4)
endpoint := netip.AddrPortFrom(ip.Unmap(), peer.Port)
if peer.Relay {
if err := applyBaseConfig(hp.WGClient, hp.WGDevName, pubKey, endpoint, hp.Network); err != nil {

156
peer/init.go Normal file
View File

@@ -0,0 +1,156 @@
package peer
import (
"bytes"
"encoding/base64"
"encoding/json"
"fmt"
"net/http"
"net/netip"
"os"
"path/filepath"
"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
"vppn/m"
)
// LocalState is the persisted identity for this peer, written on first run and
// loaded on every subsequent run.
type LocalState struct {
PrivKey wgtypes.Key
VPNIP netip.Addr
VPNNet netip.Prefix
WGPort uint16
IsRelay bool
IsPublic bool
}
// localStateJSON is the on-disk representation.
type localStateJSON struct {
PrivKey string `json:"priv_key"` // standard base64
VPNIP netip.Addr `json:"vpn_ip"`
VPNNet netip.Prefix `json:"vpn_net"`
WGPort uint16 `json:"wg_port"`
IsRelay bool `json:"is_relay"`
IsPublic bool `json:"is_public"`
}
// LoadOrInit loads LocalState from path, or registers with the hub and creates
// the file if it doesn't exist.
func LoadOrInit(statePath, hubURL, apiKey string) (LocalState, error) {
if data, err := os.ReadFile(statePath); err == nil {
return parseLocalState(data)
}
privKey, err := wgtypes.GeneratePrivateKey()
if err != nil {
return LocalState{}, fmt.Errorf("generate key: %w", err)
}
state, err := initFromHub(hubURL, apiKey, privKey)
if err != nil {
return LocalState{}, err
}
if err := saveLocalState(statePath, state); err != nil {
return LocalState{}, fmt.Errorf("save state: %w", err)
}
return state, nil
}
func initFromHub(hubURL, apiKey string, privKey wgtypes.Key) (LocalState, error) {
pubKey := privKey.PublicKey()
body, _ := json.Marshal(m.PeerInitArgs{WGPubKey: pubKey[:]})
req, err := http.NewRequest(http.MethodPost, hubURL+"/peer/init/", bytes.NewReader(body))
if err != nil {
return LocalState{}, err
}
req.SetBasicAuth("", apiKey)
req.Header.Set("Content-Type", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return LocalState{}, fmt.Errorf("hub init: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return LocalState{}, fmt.Errorf("hub init: HTTP %d", resp.StatusCode)
}
var r m.PeerInitResp
if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
return LocalState{}, fmt.Errorf("hub init decode: %w", err)
}
if len(r.Network) != 4 {
return LocalState{}, fmt.Errorf("hub init: invalid network %v", r.Network)
}
netAddr := netip.AddrFrom4([4]byte(r.Network))
octets := netAddr.As4()
octets[3] = r.PeerIP
vpnIP := netip.AddrFrom4(octets)
vpnNet := netip.PrefixFrom(netAddr, 24)
var isRelay, isPublic bool
var wgPort uint16
if self := r.NetworkState.Peers[r.PeerIP]; self != nil {
isRelay = self.Relay
isPublic = len(self.Addr4) > 0 || len(self.Addr6) > 0
wgPort = self.Port
}
return LocalState{
PrivKey: privKey,
VPNIP: vpnIP,
VPNNet: vpnNet,
WGPort: wgPort,
IsRelay: isRelay,
IsPublic: isPublic,
}, nil
}
func parseLocalState(data []byte) (LocalState, error) {
var j localStateJSON
if err := json.Unmarshal(data, &j); err != nil {
return LocalState{}, fmt.Errorf("parse state: %w", err)
}
keyBytes, err := base64.StdEncoding.DecodeString(j.PrivKey)
if err != nil {
return LocalState{}, fmt.Errorf("decode key: %w", err)
}
key, err := wgtypes.NewKey(keyBytes)
if err != nil {
return LocalState{}, fmt.Errorf("invalid key: %w", err)
}
return LocalState{
PrivKey: key,
VPNIP: j.VPNIP,
VPNNet: j.VPNNet,
WGPort: j.WGPort,
IsRelay: j.IsRelay,
IsPublic: j.IsPublic,
}, nil
}
func saveLocalState(path string, s LocalState) error {
j := localStateJSON{
PrivKey: base64.StdEncoding.EncodeToString(s.PrivKey[:]),
VPNIP: s.VPNIP,
VPNNet: s.VPNNet,
WGPort: s.WGPort,
IsRelay: s.IsRelay,
IsPublic: s.IsPublic,
}
data, err := json.MarshalIndent(j, "", " ")
if err != nil {
return err
}
if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
return err
}
return os.WriteFile(path, data, 0600)
}

85
peer/new.go Normal file
View File

@@ -0,0 +1,85 @@
package peer
import (
"fmt"
"net/netip"
"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
"vppn/peer/wginterface"
)
// New constructs an App, creates the WireGuard interface, and starts the
// background goroutines (hub poller, multicast, control conn reader).
// The caller should invoke Run() to start the event loop.
func New(
state LocalState,
hubURL, apiKey string,
ifaceName string,
) (*App, error) {
a4 := state.VPNIP.As4()
if err := wginterface.Create(ifaceName, a4[:], 24); err != nil {
return nil, fmt.Errorf("create WG interface: %w", err)
}
dev, err := wginterface.Open(ifaceName)
if err != nil {
return nil, fmt.Errorf("open WG device: %w", err)
}
if err := dev.Configure(state.PrivKey, int(state.WGPort)); err != nil {
return nil, fmt.Errorf("configure WG device: %w", err)
}
if state.IsRelay {
if err := dev.EnableForwarding(); err != nil {
return nil, fmt.Errorf("enable forwarding: %w", err)
}
}
cc, err := newUDPControlConn(state.VPNIP, ControlPort)
if err != nil {
return nil, fmt.Errorf("control conn: %w", err)
}
pingCh := make(chan PingEvent)
hubAddCh := make(chan HubPeer)
hubRemoveCh := make(chan wgtypes.Key)
multicastCh := make(chan MulticastEvent)
poller, err := NewHubPoller(
state.VPNIP, state.VPNNet,
hubURL, apiKey,
hubAddCh, hubRemoveCh,
)
if err != nil {
return nil, fmt.Errorf("hub poller: %w", err)
}
go cc.run(pingCh)
go poller.Run()
go RunMCWriter(state.VPNIP, state.PrivKey.PublicKey(), state.WGPort)
if !state.IsPublic {
go RunMCReader(state.VPNNet, state.VPNIP, multicastCh)
}
return &App{
vpnIP: state.VPNIP,
vpnNet: state.VPNNet,
privKey: state.PrivKey,
pubKey: state.PrivKey.PublicKey(),
isRelay: state.IsRelay,
isPublic: state.IsPublic,
dev: dev,
controlConn: cc,
peersByKey: make(map[wgtypes.Key]*Peer),
peersByIP: make(map[netip.Addr]*Peer),
hubAddCh: hubAddCh,
hubRemoveCh: hubRemoveCh,
pingCh: pingCh,
multicastCh: multicastCh,
}, nil
}