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derp: use new node key type.

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Update #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
pull/3223/head
David Anderson 3 years ago
parent 15376f975b
commit 37c150aee1
16 changed files with 199 additions and 269 deletions
Show Stats Download Patch File Download Diff File

2
cmd/derper/derper.go
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@ -143,7 +143,7 @@ func main() {
serveTLS := tsweb.IsProd443(*addr) serveTLS := tsweb.IsProd443(*addr)
s := derp.NewServer(cfg.PrivateKey.AsPrivate(), log.Printf) s := derp.NewServer(cfg.PrivateKey, log.Printf)
s.SetVerifyClient(*verifyClients) s.SetVerifyClient(*verifyClients)
if *meshPSKFile != "" { if *meshPSKFile != "" {

4
cmd/derper/mesh.go
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@ -69,8 +69,8 @@ func startMeshWithHost(s *derp.Server, host string) error {
return d.DialContext(ctx, network, addr) return d.DialContext(ctx, network, addr)
}) })
add := func(k key.Public) { s.AddPacketForwarder(k, c) } add := func(k key.NodePublic) { s.AddPacketForwarder(k, c) }
remove := func(k key.Public) { s.RemovePacketForwarder(k, c) } remove := func(k key.NodePublic) { s.RemovePacketForwarder(k, c) }
go c.RunWatchConnectionLoop(context.Background(), s.PublicKey(), logf, add, remove) go c.RunWatchConnectionLoop(context.Background(), s.PublicKey(), logf, add, remove)
return nil return nil
} }

2
cmd/derpprobe/derpprobe.go
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@ -344,7 +344,7 @@ func probeNodePair(ctx context.Context, dm *tailcfg.DERPMap, from, to *tailcfg.D
} }
func newConn(ctx context.Context, dm *tailcfg.DERPMap, n *tailcfg.DERPNode) (*derphttp.Client, error) { func newConn(ctx context.Context, dm *tailcfg.DERPMap, n *tailcfg.DERPNode) (*derphttp.Client, error) {
priv := key.NewPrivate() priv := key.NewNode()
dc := derphttp.NewRegionClient(priv, log.Printf, func() *tailcfg.DERPRegion { dc := derphttp.NewRegionClient(priv, log.Printf, func() *tailcfg.DERPRegion {
rid := n.RegionID rid := n.RegionID
return &tailcfg.DERPRegion{ return &tailcfg.DERPRegion{

2
cmd/tailscale/depaware.txt
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@ -86,7 +86,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
golang.org/x/crypto/cryptobyte/asn1 from crypto/ecdsa+ golang.org/x/crypto/cryptobyte/asn1 from crypto/ecdsa+
golang.org/x/crypto/curve25519 from crypto/tls+ golang.org/x/crypto/curve25519 from crypto/tls+
golang.org/x/crypto/hkdf from crypto/tls golang.org/x/crypto/hkdf from crypto/tls
golang.org/x/crypto/nacl/box from tailscale.com/derp+ golang.org/x/crypto/nacl/box from tailscale.com/types/key
golang.org/x/crypto/nacl/secretbox from golang.org/x/crypto/nacl/box golang.org/x/crypto/nacl/secretbox from golang.org/x/crypto/nacl/box
golang.org/x/crypto/poly1305 from golang.org/x/crypto/chacha20poly1305 golang.org/x/crypto/poly1305 from golang.org/x/crypto/chacha20poly1305
golang.org/x/crypto/salsa20/salsa from golang.org/x/crypto/nacl/box+ golang.org/x/crypto/salsa20/salsa from golang.org/x/crypto/nacl/box+

4
cmd/tailscaled/debug.go
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@ -193,8 +193,8 @@ func checkDerp(ctx context.Context, derpRegion string) error {
panic("unreachable") panic("unreachable")
} }
priv1 := key.NewPrivate() priv1 := key.NewNode()
priv2 := key.NewPrivate() priv2 := key.NewNode()
c1 := derphttp.NewRegionClient(priv1, log.Printf, getRegion) c1 := derphttp.NewRegionClient(priv1, log.Printf, getRegion)
c2 := derphttp.NewRegionClient(priv2, log.Printf, getRegion) c2 := derphttp.NewRegionClient(priv2, log.Printf, getRegion)

2
cmd/tailscaled/depaware.txt
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@ -257,7 +257,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
golang.org/x/crypto/cryptobyte/asn1 from crypto/ecdsa+ golang.org/x/crypto/cryptobyte/asn1 from crypto/ecdsa+
golang.org/x/crypto/curve25519 from crypto/tls+ golang.org/x/crypto/curve25519 from crypto/tls+
golang.org/x/crypto/hkdf from crypto/tls golang.org/x/crypto/hkdf from crypto/tls
golang.org/x/crypto/nacl/box from tailscale.com/derp+ golang.org/x/crypto/nacl/box from tailscale.com/types/key+
golang.org/x/crypto/nacl/secretbox from golang.org/x/crypto/nacl/box golang.org/x/crypto/nacl/secretbox from golang.org/x/crypto/nacl/box
golang.org/x/crypto/poly1305 from golang.org/x/crypto/chacha20poly1305+ golang.org/x/crypto/poly1305 from golang.org/x/crypto/chacha20poly1305+
golang.org/x/crypto/salsa20/salsa from golang.org/x/crypto/nacl/box+ golang.org/x/crypto/salsa20/salsa from golang.org/x/crypto/nacl/box+

74
derp/derp_client.go
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@ -6,7 +6,6 @@ package derp
import ( import (
"bufio" "bufio"
crand "crypto/rand"
"encoding/binary" "encoding/binary"
"encoding/json" "encoding/json"
"errors" "errors"
@ -15,7 +14,7 @@ import (
"sync" "sync"
"time" "time"
"golang.org/x/crypto/nacl/box" "go4.org/mem"
"golang.org/x/time/rate" "golang.org/x/time/rate"
"tailscale.com/types/key" "tailscale.com/types/key"
"tailscale.com/types/logger" "tailscale.com/types/logger"
@ -23,9 +22,9 @@ import (
// Client is a DERP client. // Client is a DERP client.
type Client struct { type Client struct {
serverKey key.Public // of the DERP server; not a machine or node key serverKey key.NodePublic // of the DERP server; not a machine or node key
privateKey key.Private privateKey key.NodePrivate
publicKey key.Public // of privateKey publicKey key.NodePublic // of privateKey
logf logger.Logf logf logger.Logf
nc Conn nc Conn
br *bufio.Reader br *bufio.Reader
@ -54,7 +53,7 @@ func (f clientOptFunc) update(o *clientOpt) { f(o) }
// clientOpt are the options passed to newClient. // clientOpt are the options passed to newClient.
type clientOpt struct { type clientOpt struct {
MeshKey string MeshKey string
ServerPub key.Public ServerPub key.NodePublic
CanAckPings bool CanAckPings bool
IsProber bool IsProber bool
} }
@ -71,7 +70,7 @@ func IsProber(v bool) ClientOpt { return clientOptFunc(func(o *clientOpt) { o.Is
// ServerPublicKey returns a ClientOpt to declare that the server's DERP public key is known. // ServerPublicKey returns a ClientOpt to declare that the server's DERP public key is known.
// If key is the zero value, the returned ClientOpt is a no-op. // If key is the zero value, the returned ClientOpt is a no-op.
func ServerPublicKey(key key.Public) ClientOpt { func ServerPublicKey(key key.NodePublic) ClientOpt {
return clientOptFunc(func(o *clientOpt) { o.ServerPub = key }) return clientOptFunc(func(o *clientOpt) { o.ServerPub = key })
} }
@ -81,7 +80,7 @@ func CanAckPings(v bool) ClientOpt {
return clientOptFunc(func(o *clientOpt) { o.CanAckPings = v }) return clientOptFunc(func(o *clientOpt) { o.CanAckPings = v })
} }
func NewClient(privateKey key.Private, nc Conn, brw *bufio.ReadWriter, logf logger.Logf, opts ...ClientOpt) (*Client, error) { func NewClient(privateKey key.NodePrivate, nc Conn, brw *bufio.ReadWriter, logf logger.Logf, opts ...ClientOpt) (*Client, error) {
var opt clientOpt var opt clientOpt
for _, o := range opts { for _, o := range opts {
if o == nil { if o == nil {
@ -92,7 +91,7 @@ func NewClient(privateKey key.Private, nc Conn, brw *bufio.ReadWriter, logf logg
return newClient(privateKey, nc, brw, logf, opt) return newClient(privateKey, nc, brw, logf, opt)
} }
func newClient(privateKey key.Private, nc Conn, brw *bufio.ReadWriter, logf logger.Logf, opt clientOpt) (*Client, error) { func newClient(privateKey key.NodePrivate, nc Conn, brw *bufio.ReadWriter, logf logger.Logf, opt clientOpt) (*Client, error) {
c := &Client{ c := &Client{
privateKey: privateKey, privateKey: privateKey,
publicKey: privateKey.Public(), publicKey: privateKey.Public(),
@ -130,7 +129,7 @@ func (c *Client) recvServerKey() error {
if flen < uint32(len(buf)) || t != frameServerKey || string(buf[:len(magic)]) != magic { if flen < uint32(len(buf)) || t != frameServerKey || string(buf[:len(magic)]) != magic {
return errors.New("invalid server greeting") return errors.New("invalid server greeting")
} }
copy(c.serverKey[:], buf[len(magic):]) c.serverKey = key.NodePublicFromRaw32(mem.B(buf[len(magic):]))
return nil return nil
} }
@ -143,13 +142,9 @@ func (c *Client) parseServerInfo(b []byte) (*serverInfo, error) {
if fl > maxLength { if fl > maxLength {
return nil, fmt.Errorf("long serverInfo frame") return nil, fmt.Errorf("long serverInfo frame")
} }
// TODO: add a read-nonce-and-box helper msg, ok := c.privateKey.OpenFrom(c.serverKey, b)
var nonce [nonceLen]byte
copy(nonce[:], b)
msgbox := b[nonceLen:]
msg, ok := box.Open(nil, msgbox, &nonce, c.serverKey.B32(), c.privateKey.B32())
if !ok { if !ok {
return nil, fmt.Errorf("failed to open naclbox from server key %x", c.serverKey[:]) return nil, fmt.Errorf("failed to open naclbox from server key %s", c.serverKey)
} }
info := new(serverInfo) info := new(serverInfo)
if err := json.Unmarshal(msg, info); err != nil { if err := json.Unmarshal(msg, info); err != nil {
@ -176,10 +171,6 @@ type clientInfo struct {
} }
func (c *Client) sendClientKey() error { func (c *Client) sendClientKey() error {
var nonce [nonceLen]byte
if _, err := crand.Read(nonce[:]); err != nil {
return err
}
msg, err := json.Marshal(clientInfo{ msg, err := json.Marshal(clientInfo{
Version: ProtocolVersion, Version: ProtocolVersion,
MeshKey: c.meshKey, MeshKey: c.meshKey,
@ -189,24 +180,23 @@ func (c *Client) sendClientKey() error {
if err != nil { if err != nil {
return err return err
} }
msgbox := box.Seal(nil, msg, &nonce, c.serverKey.B32(), c.privateKey.B32()) msgbox := c.privateKey.SealTo(c.serverKey, msg)
buf := make([]byte, 0, nonceLen+keyLen+len(msgbox)) buf := make([]byte, 0, keyLen+len(msgbox))
buf = append(buf, c.publicKey[:]...) buf = c.publicKey.AppendTo(buf)
buf = append(buf, nonce[:]...)
buf = append(buf, msgbox...) buf = append(buf, msgbox...)
return writeFrame(c.bw, frameClientInfo, buf) return writeFrame(c.bw, frameClientInfo, buf)
} }
// ServerPublicKey returns the server's public key. // ServerPublicKey returns the server's public key.
func (c *Client) ServerPublicKey() key.Public { return c.serverKey } func (c *Client) ServerPublicKey() key.NodePublic { return c.serverKey }
// Send sends a packet to the Tailscale node identified by dstKey. // Send sends a packet to the Tailscale node identified by dstKey.
// //
// It is an error if the packet is larger than 64KB. // It is an error if the packet is larger than 64KB.
func (c *Client) Send(dstKey key.Public, pkt []byte) error { return c.send(dstKey, pkt) } func (c *Client) Send(dstKey key.NodePublic, pkt []byte) error { return c.send(dstKey, pkt) }
func (c *Client) send(dstKey key.Public, pkt []byte) (ret error) { func (c *Client) send(dstKey key.NodePublic, pkt []byte) (ret error) {
defer func() { defer func() {
if ret != nil { if ret != nil {
ret = fmt.Errorf("derp.Send: %w", ret) ret = fmt.Errorf("derp.Send: %w", ret)
@ -220,15 +210,15 @@ func (c *Client) send(dstKey key.Public, pkt []byte) (ret error) {
c.wmu.Lock() c.wmu.Lock()
defer c.wmu.Unlock() defer c.wmu.Unlock()
if c.rate != nil { if c.rate != nil {
pktLen := frameHeaderLen + len(dstKey) + len(pkt) pktLen := frameHeaderLen + dstKey.RawLen() + len(pkt)
if !c.rate.AllowN(time.Now(), pktLen) { if !c.rate.AllowN(time.Now(), pktLen) {
return nil // drop return nil // drop
} }
} }
if err := writeFrameHeader(c.bw, frameSendPacket, uint32(len(dstKey)+len(pkt))); err != nil { if err := writeFrameHeader(c.bw, frameSendPacket, uint32(dstKey.RawLen()+len(pkt))); err != nil {
return err return err
} }
if _, err := c.bw.Write(dstKey[:]); err != nil { if _, err := c.bw.Write(dstKey.AppendTo(nil)); err != nil {
return err return err
} }
if _, err := c.bw.Write(pkt); err != nil { if _, err := c.bw.Write(pkt); err != nil {
@ -237,7 +227,7 @@ func (c *Client) send(dstKey key.Public, pkt []byte) (ret error) {
return c.bw.Flush() return c.bw.Flush()
} }
func (c *Client) ForwardPacket(srcKey, dstKey key.Public, pkt []byte) (err error) { func (c *Client) ForwardPacket(srcKey, dstKey key.NodePublic, pkt []byte) (err error) {
defer func() { defer func() {
if err != nil { if err != nil {
err = fmt.Errorf("derp.ForwardPacket: %w", err) err = fmt.Errorf("derp.ForwardPacket: %w", err)
@ -257,10 +247,10 @@ func (c *Client) ForwardPacket(srcKey, dstKey key.Public, pkt []byte) (err error
if err := writeFrameHeader(c.bw, frameForwardPacket, uint32(keyLen*2+len(pkt))); err != nil { if err := writeFrameHeader(c.bw, frameForwardPacket, uint32(keyLen*2+len(pkt))); err != nil {
return err return err
} }
if _, err := c.bw.Write(srcKey[:]); err != nil { if _, err := c.bw.Write(srcKey.AppendTo(nil)); err != nil {
return err return err
} }
if _, err := c.bw.Write(dstKey[:]); err != nil { if _, err := c.bw.Write(dstKey.AppendTo(nil)); err != nil {
return err return err
} }
if _, err := c.bw.Write(pkt); err != nil { if _, err := c.bw.Write(pkt); err != nil {
@ -322,10 +312,10 @@ func (c *Client) WatchConnectionChanges() error {
// ClosePeer asks the server to close target's TCP connection. // ClosePeer asks the server to close target's TCP connection.
// It's a fatal error if the client wasn't created using MeshKey. // It's a fatal error if the client wasn't created using MeshKey.
func (c *Client) ClosePeer(target key.Public) error { func (c *Client) ClosePeer(target key.NodePublic) error {
c.wmu.Lock() c.wmu.Lock()
defer c.wmu.Unlock() defer c.wmu.Unlock()
return writeFrame(c.bw, frameClosePeer, target[:]) return writeFrame(c.bw, frameClosePeer, target.AppendTo(nil))
} }
// ReceivedMessage represents a type returned by Client.Recv. Unless // ReceivedMessage represents a type returned by Client.Recv. Unless
@ -338,7 +328,7 @@ type ReceivedMessage interface {
// ReceivedPacket is a ReceivedMessage representing an incoming packet. // ReceivedPacket is a ReceivedMessage representing an incoming packet.
type ReceivedPacket struct { type ReceivedPacket struct {
Source key.Public Source key.NodePublic
// Data is the received packet bytes. It aliases the memory // Data is the received packet bytes. It aliases the memory
// passed to Client.Recv. // passed to Client.Recv.
Data []byte Data []byte
@ -349,13 +339,13 @@ func (ReceivedPacket) msg() {}
// PeerGoneMessage is a ReceivedMessage that indicates that the client // PeerGoneMessage is a ReceivedMessage that indicates that the client
// identified by the underlying public key had previously sent you a // identified by the underlying public key had previously sent you a
// packet but has now disconnected from the server. // packet but has now disconnected from the server.
type PeerGoneMessage key.Public type PeerGoneMessage key.NodePublic
func (PeerGoneMessage) msg() {} func (PeerGoneMessage) msg() {}
// PeerPresentMessage is a ReceivedMessage that indicates that the client // PeerPresentMessage is a ReceivedMessage that indicates that the client
// is connected to the server. (Only used by trusted mesh clients) // is connected to the server. (Only used by trusted mesh clients)
type PeerPresentMessage key.Public type PeerPresentMessage key.NodePublic
func (PeerPresentMessage) msg() {} func (PeerPresentMessage) msg() {}
@ -516,8 +506,7 @@ func (c *Client) recvTimeout(timeout time.Duration) (m ReceivedMessage, err erro
c.logf("[unexpected] dropping short peerGone frame from DERP server") c.logf("[unexpected] dropping short peerGone frame from DERP server")
continue continue
} }
var pg PeerGoneMessage pg := PeerGoneMessage(key.NodePublicFromRaw32(mem.B(b[:keyLen])))
copy(pg[:], b[:keyLen])
return pg, nil return pg, nil
case framePeerPresent: case framePeerPresent:
@ -525,8 +514,7 @@ func (c *Client) recvTimeout(timeout time.Duration) (m ReceivedMessage, err erro
c.logf("[unexpected] dropping short peerPresent frame from DERP server") c.logf("[unexpected] dropping short peerPresent frame from DERP server")
continue continue
} }
var pg PeerPresentMessage pg := PeerPresentMessage(key.NodePublicFromRaw32(mem.B(b[:keyLen])))
copy(pg[:], b[:keyLen])
return pg, nil return pg, nil
case frameRecvPacket: case frameRecvPacket:
@ -535,7 +523,7 @@ func (c *Client) recvTimeout(timeout time.Duration) (m ReceivedMessage, err erro
c.logf("[unexpected] dropping short packet from DERP server") c.logf("[unexpected] dropping short packet from DERP server")
continue continue
} }
copy(rp.Source[:], b[:keyLen]) rp.Source = key.NodePublicFromRaw32(mem.B(b[:keyLen]))
rp.Data = b[keyLen:n] rp.Data = b[keyLen:n]
return rp, nil return rp, nil

182
derp/derp_server.go
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@ -34,7 +34,6 @@ import (
"time" "time"
"go4.org/mem" "go4.org/mem"
"golang.org/x/crypto/nacl/box"
"golang.org/x/sync/errgroup" "golang.org/x/sync/errgroup"
"golang.org/x/time/rate" "golang.org/x/time/rate"
"inet.af/netaddr" "inet.af/netaddr"
@ -52,7 +51,7 @@ var debug, _ = strconv.ParseBool(os.Getenv("DERP_DEBUG_LOGS"))
// verboseDropKeys is the set of destination public keys that should // verboseDropKeys is the set of destination public keys that should
// verbosely log whenever DERP drops a packet. // verbosely log whenever DERP drops a packet.
var verboseDropKeys = map[key.Public]bool{} var verboseDropKeys = map[key.NodePublic]bool{}
func init() { func init() {
keys := os.Getenv("TS_DEBUG_VERBOSE_DROPS") keys := os.Getenv("TS_DEBUG_VERBOSE_DROPS")
@ -60,7 +59,7 @@ func init() {
return return
} }
for _, keyStr := range strings.Split(keys, ",") { for _, keyStr := range strings.Split(keys, ",") {
k, err := key.NewPublicFromHexMem(mem.S(keyStr)) k, err := key.ParseNodePublicUntyped(mem.S(keyStr))
if err != nil { if err != nil {
log.Printf("ignoring invalid debug key %q: %v", keyStr, err) log.Printf("ignoring invalid debug key %q: %v", keyStr, err)
} else { } else {
@ -99,8 +98,8 @@ type Server struct {
// before failing when writing to a client. // before failing when writing to a client.
WriteTimeout time.Duration WriteTimeout time.Duration
privateKey key.Private privateKey key.NodePrivate
publicKey key.Public publicKey key.NodePublic
logf logger.Logf logf logger.Logf
memSys0 uint64 // runtime.MemStats.Sys at start (or early-ish) memSys0 uint64 // runtime.MemStats.Sys at start (or early-ish)
meshKey string meshKey string
@ -146,22 +145,22 @@ type Server struct {
mu sync.Mutex mu sync.Mutex
closed bool closed bool
netConns map[Conn]chan struct{} // chan is closed when conn closes netConns map[Conn]chan struct{} // chan is closed when conn closes
clients map[key.Public]clientSet clients map[key.NodePublic]clientSet
watchers map[*sclient]bool // mesh peer -> true watchers map[*sclient]bool // mesh peer -> true
// clientsMesh tracks all clients in the cluster, both locally // clientsMesh tracks all clients in the cluster, both locally
// and to mesh peers. If the value is nil, that means the // and to mesh peers. If the value is nil, that means the
// peer is only local (and thus in the clients Map, but not // peer is only local (and thus in the clients Map, but not
// remote). If the value is non-nil, it's remote (+ maybe also // remote). If the value is non-nil, it's remote (+ maybe also
// local). // local).
clientsMesh map[key.Public]PacketForwarder clientsMesh map[key.NodePublic]PacketForwarder
// sentTo tracks which peers have sent to which other peers, // sentTo tracks which peers have sent to which other peers,
// and at which connection number. This isn't on sclient // and at which connection number. This isn't on sclient
// because it includes intra-region forwarded packets as the // because it includes intra-region forwarded packets as the
// src. // src.
sentTo map[key.Public]map[key.Public]int64 // src => dst => dst's latest sclient.connNum sentTo map[key.NodePublic]map[key.NodePublic]int64 // src => dst => dst's latest sclient.connNum
// maps from netaddr.IPPort to a client's public key // maps from netaddr.IPPort to a client's public key
keyOfAddr map[netaddr.IPPort]key.Public keyOfAddr map[netaddr.IPPort]key.NodePublic
} }
// clientSet represents 1 or more *sclients. // clientSet represents 1 or more *sclients.
@ -277,7 +276,7 @@ func (s *dupClientSet) removeClient(c *sclient) bool {
// is a multiForwarder, which this package creates as needed if a // is a multiForwarder, which this package creates as needed if a
// public key gets more than one PacketForwarder registered for it. // public key gets more than one PacketForwarder registered for it.
type PacketForwarder interface { type PacketForwarder interface {
ForwardPacket(src, dst key.Public, payload []byte) error ForwardPacket(src, dst key.NodePublic, payload []byte) error
} }
// Conn is the subset of the underlying net.Conn the DERP Server needs. // Conn is the subset of the underlying net.Conn the DERP Server needs.
@ -294,7 +293,7 @@ type Conn interface {
// NewServer returns a new DERP server. It doesn't listen on its own. // NewServer returns a new DERP server. It doesn't listen on its own.
// Connections are given to it via Server.Accept. // Connections are given to it via Server.Accept.
func NewServer(privateKey key.Private, logf logger.Logf) *Server { func NewServer(privateKey key.NodePrivate, logf logger.Logf) *Server {
var ms runtime.MemStats var ms runtime.MemStats
runtime.ReadMemStats(&ms) runtime.ReadMemStats(&ms)
@ -306,14 +305,14 @@ func NewServer(privateKey key.Private, logf logger.Logf) *Server {
packetsRecvByKind: metrics.LabelMap{Label: "kind"}, packetsRecvByKind: metrics.LabelMap{Label: "kind"},
packetsDroppedReason: metrics.LabelMap{Label: "reason"}, packetsDroppedReason: metrics.LabelMap{Label: "reason"},
packetsDroppedType: metrics.LabelMap{Label: "type"}, packetsDroppedType: metrics.LabelMap{Label: "type"},
clients: map[key.Public]clientSet{}, clients: map[key.NodePublic]clientSet{},
clientsMesh: map[key.Public]PacketForwarder{}, clientsMesh: map[key.NodePublic]PacketForwarder{},
netConns: map[Conn]chan struct{}{}, netConns: map[Conn]chan struct{}{},
memSys0: ms.Sys, memSys0: ms.Sys,
watchers: map[*sclient]bool{}, watchers: map[*sclient]bool{},
sentTo: map[key.Public]map[key.Public]int64{}, sentTo: map[key.NodePublic]map[key.NodePublic]int64{},
avgQueueDuration: new(uint64), avgQueueDuration: new(uint64),
keyOfAddr: map[netaddr.IPPort]key.Public{}, keyOfAddr: map[netaddr.IPPort]key.NodePublic{},
} }
s.initMetacert() s.initMetacert()
s.packetsRecvDisco = s.packetsRecvByKind.Get("disco") s.packetsRecvDisco = s.packetsRecvByKind.Get("disco")
@ -353,10 +352,10 @@ func (s *Server) HasMeshKey() bool { return s.meshKey != "" }
func (s *Server) MeshKey() string { return s.meshKey } func (s *Server) MeshKey() string { return s.meshKey }
// PrivateKey returns the server's private key. // PrivateKey returns the server's private key.
func (s *Server) PrivateKey() key.Private { return s.privateKey } func (s *Server) PrivateKey() key.NodePrivate { return s.privateKey }
// PublicKey returns the server's public key. // PublicKey returns the server's public key.
func (s *Server) PublicKey() key.Public { return s.publicKey } func (s *Server) PublicKey() key.NodePublic { return s.publicKey }
// Close closes the server and waits for the connections to disconnect. // Close closes the server and waits for the connections to disconnect.
func (s *Server) Close() error { func (s *Server) Close() error {
@ -447,7 +446,7 @@ func (s *Server) initMetacert() {
tmpl := &x509.Certificate{ tmpl := &x509.Certificate{
SerialNumber: big.NewInt(ProtocolVersion), SerialNumber: big.NewInt(ProtocolVersion),
Subject: pkix.Name{ Subject: pkix.Name{
CommonName: fmt.Sprintf("derpkey%x", s.publicKey[:]), CommonName: fmt.Sprintf("derpkey%s", s.publicKey.UntypedHexString()),
}, },
// Windows requires NotAfter and NotBefore set: // Windows requires NotAfter and NotBefore set:
NotAfter: time.Now().Add(30 * 24 * time.Hour), NotAfter: time.Now().Add(30 * 24 * time.Hour),
@ -515,7 +514,7 @@ func (s *Server) registerClient(c *sclient) {
// presence changed. // presence changed.
// //
// s.mu must be held. // s.mu must be held.
func (s *Server) broadcastPeerStateChangeLocked(peer key.Public, present bool) { func (s *Server) broadcastPeerStateChangeLocked(peer key.NodePublic, present bool) {
for w := range s.watchers { for w := range s.watchers {
w.peerStateChange = append(w.peerStateChange, peerConnState{peer: peer, present: present}) w.peerStateChange = append(w.peerStateChange, peerConnState{peer: peer, present: present})
go w.requestMeshUpdate() go w.requestMeshUpdate()
@ -577,7 +576,7 @@ func (s *Server) unregisterClient(c *sclient) {
// key has sent to previously (whether those sends were from a local // key has sent to previously (whether those sends were from a local
// client or forwarded). It must only be called after the key has // client or forwarded). It must only be called after the key has
// been removed from clientsMesh. // been removed from clientsMesh.
func (s *Server) notePeerGoneFromRegionLocked(key key.Public) { func (s *Server) notePeerGoneFromRegionLocked(key key.NodePublic) {
if _, ok := s.clientsMesh[key]; ok { if _, ok := s.clientsMesh[key]; ok {
panic("usage") panic("usage")
} }
@ -663,7 +662,7 @@ func (s *Server) accept(nc Conn, brw *bufio.ReadWriter, remoteAddr string, connN
connectedAt: time.Now(), connectedAt: time.Now(),
sendQueue: make(chan pkt, perClientSendQueueDepth), sendQueue: make(chan pkt, perClientSendQueueDepth),
discoSendQueue: make(chan pkt, perClientSendQueueDepth), discoSendQueue: make(chan pkt, perClientSendQueueDepth),
peerGone: make(chan key.Public), peerGone: make(chan key.NodePublic),
canMesh: clientInfo.MeshKey != "" && clientInfo.MeshKey == s.meshKey, canMesh: clientInfo.MeshKey != "" && clientInfo.MeshKey == s.meshKey,
} }
@ -774,8 +773,8 @@ func (c *sclient) handleFrameClosePeer(ft frameType, fl uint32) error {
if !c.canMesh { if !c.canMesh {
return fmt.Errorf("insufficient permissions") return fmt.Errorf("insufficient permissions")
} }
var targetKey key.Public var targetKey key.NodePublic
if _, err := io.ReadFull(c.br, targetKey[:]); err != nil { if err := targetKey.ReadRawWithoutAllocating(c.br); err != nil {
return err return err
} }
s := c.s s := c.s
@ -845,10 +844,10 @@ func (c *sclient) handleFrameForwardPacket(ft frameType, fl uint32) error {
// notePeerSendLocked records that src sent to dst. We keep track of // notePeerSendLocked records that src sent to dst. We keep track of
// that so when src disconnects, we can tell dst (if it's still // that so when src disconnects, we can tell dst (if it's still
// around) that src is gone (a peerGone frame). // around) that src is gone (a peerGone frame).
func (s *Server) notePeerSendLocked(src key.Public, dst *sclient) { func (s *Server) notePeerSendLocked(src key.NodePublic, dst *sclient) {
m, ok := s.sentTo[src] m, ok := s.sentTo[src]
if !ok { if !ok {
m = map[key.Public]int64{} m = map[key.NodePublic]int64{}
s.sentTo[src] = m s.sentTo[src] = m
} }
m[dst.key] = dst.connNum m[dst.key] = dst.connNum
@ -919,7 +918,7 @@ const (
dropReasonDupClient // the public key is connected 2+ times (active/active, fighting) dropReasonDupClient // the public key is connected 2+ times (active/active, fighting)
) )
func (s *Server) recordDrop(packetBytes []byte, srcKey, dstKey key.Public, reason dropReason) { func (s *Server) recordDrop(packetBytes []byte, srcKey, dstKey key.NodePublic, reason dropReason) {
s.packetsDropped.Add(1) s.packetsDropped.Add(1)
s.packetsDroppedReasonCounters[reason].Add(1) s.packetsDroppedReasonCounters[reason].Add(1)
if disco.LooksLikeDiscoWrapper(packetBytes) { if disco.LooksLikeDiscoWrapper(packetBytes) {
@ -982,7 +981,7 @@ func (c *sclient) sendPkt(dst *sclient, p pkt) error {
// requestPeerGoneWrite sends a request to write a "peer gone" frame // requestPeerGoneWrite sends a request to write a "peer gone" frame
// that the provided peer has disconnected. It blocks until either the // that the provided peer has disconnected. It blocks until either the
// write request is scheduled, or the client has closed. // write request is scheduled, or the client has closed.
func (c *sclient) requestPeerGoneWrite(peer key.Public) { func (c *sclient) requestPeerGoneWrite(peer key.NodePublic) {
select { select {
case c.peerGone <- peer: case c.peerGone <- peer:
case <-c.done: case <-c.done:
@ -999,7 +998,7 @@ func (c *sclient) requestMeshUpdate() {
} }
} }
func (s *Server) verifyClient(clientKey key.Public, info *clientInfo) error { func (s *Server) verifyClient(clientKey key.NodePublic, info *clientInfo) error {
if !s.verifyClients { if !s.verifyClients {
return nil return nil
} }
@ -1007,10 +1006,10 @@ func (s *Server) verifyClient(clientKey key.Public, info *clientInfo) error {
if err != nil { if err != nil {
return fmt.Errorf("failed to query local tailscaled status: %w", err) return fmt.Errorf("failed to query local tailscaled status: %w", err)
} }
if clientKey == status.Self.PublicKey { if clientKey == key.NodePublicFromRaw32(mem.B(status.Self.PublicKey[:])) {
return nil return nil
} }
if _, exists := status.Peer[clientKey]; !exists { if _, exists := status.Peer[clientKey.AsPublic()]; !exists {
return fmt.Errorf("client %v not in set of peers", clientKey) return fmt.Errorf("client %v not in set of peers", clientKey)
} }
// TODO(bradfitz): add policy for configurable bandwidth rate per client? // TODO(bradfitz): add policy for configurable bandwidth rate per client?
@ -1018,9 +1017,9 @@ func (s *Server) verifyClient(clientKey key.Public, info *clientInfo) error {
} }
func (s *Server) sendServerKey(lw *lazyBufioWriter) error { func (s *Server) sendServerKey(lw *lazyBufioWriter) error {
buf := make([]byte, 0, len(magic)+len(s.publicKey)) buf := make([]byte, 0, len(magic)+s.publicKey.RawLen())
buf = append(buf, magic...) buf = append(buf, magic...)
buf = append(buf, s.publicKey[:]...) buf = s.publicKey.AppendTo(buf)
err := writeFrame(lw.bw(), frameServerKey, buf) err := writeFrame(lw.bw(), frameServerKey, buf)
lw.Flush() // redundant (no-op) flush to release bufio.Writer lw.Flush() // redundant (no-op) flush to release bufio.Writer
return err return err
@ -1084,21 +1083,14 @@ type serverInfo struct {
TokenBucketBytesBurst int `json:",omitempty"` TokenBucketBytesBurst int `json:",omitempty"`
} }
func (s *Server) sendServerInfo(bw *lazyBufioWriter, clientKey key.Public) error { func (s *Server) sendServerInfo(bw *lazyBufioWriter, clientKey key.NodePublic) error {
var nonce [24]byte
if _, err := crand.Read(nonce[:]); err != nil {
return err
}
msg, err := json.Marshal(serverInfo{Version: ProtocolVersion}) msg, err := json.Marshal(serverInfo{Version: ProtocolVersion})
if err != nil { if err != nil {
return err return err
} }
msgbox := box.Seal(nil, msg, &nonce, clientKey.B32(), s.privateKey.B32()) msgbox := s.privateKey.SealTo(clientKey, msg)
if err := writeFrameHeader(bw.bw(), frameServerInfo, nonceLen+uint32(len(msgbox))); err != nil { if err := writeFrameHeader(bw.bw(), frameServerInfo, uint32(len(msgbox))); err != nil {
return err
}
if _, err := bw.Write(nonce[:]); err != nil {
return err return err
} }
if _, err := bw.Write(msgbox); err != nil { if _, err := bw.Write(msgbox); err != nil {
@ -1110,7 +1102,7 @@ func (s *Server) sendServerInfo(bw *lazyBufioWriter, clientKey key.Public) error
// recvClientKey reads the frameClientInfo frame from the client (its // recvClientKey reads the frameClientInfo frame from the client (its
// proof of identity) upon its initial connection. It should be // proof of identity) upon its initial connection. It should be
// considered especially untrusted at this point. // considered especially untrusted at this point.
func (s *Server) recvClientKey(br *bufio.Reader) (clientKey key.Public, info *clientInfo, err error) { func (s *Server) recvClientKey(br *bufio.Reader) (clientKey key.NodePublic, info *clientInfo, err error) {
fl, err := readFrameTypeHeader(br, frameClientInfo) fl, err := readFrameTypeHeader(br, frameClientInfo)
if err != nil { if err != nil {
return zpub, nil, err return zpub, nil, err
@ -1124,21 +1116,17 @@ func (s *Server) recvClientKey(br *bufio.Reader) (clientKey key.Public, info *cl
if fl > 256<<10 { if fl > 256<<10 {
return zpub, nil, errors.New("long client info") return zpub, nil, errors.New("long client info")
} }
if _, err := io.ReadFull(br, clientKey[:]); err != nil { if err := clientKey.ReadRawWithoutAllocating(br); err != nil {
return zpub, nil, err return zpub, nil, err
} }
var nonce [24]byte msgLen := int(fl - keyLen)
if _, err := io.ReadFull(br, nonce[:]); err != nil {
return zpub, nil, fmt.Errorf("nonce: %v", err)
}
msgLen := int(fl - minLen)
msgbox := make([]byte, msgLen) msgbox := make([]byte, msgLen)
if _, err := io.ReadFull(br, msgbox); err != nil { if _, err := io.ReadFull(br, msgbox); err != nil {
return zpub, nil, fmt.Errorf("msgbox: %v", err) return zpub, nil, fmt.Errorf("msgbox: %v", err)
} }
msg, ok := box.Open(nil, msgbox, &nonce, (*[32]byte)(&clientKey), s.privateKey.B32()) msg, ok := s.privateKey.OpenFrom(clientKey, msgbox)
if !ok { if !ok {
return zpub, nil, fmt.Errorf("msgbox: cannot open len=%d with client key %x", msgLen, clientKey[:]) return zpub, nil, fmt.Errorf("msgbox: cannot open len=%d with client key %s", msgLen, clientKey)
} }
info = new(clientInfo) info = new(clientInfo)
if err := json.Unmarshal(msg, info); err != nil { if err := json.Unmarshal(msg, info); err != nil {
@ -1147,11 +1135,11 @@ func (s *Server) recvClientKey(br *bufio.Reader) (clientKey key.Public, info *cl
return clientKey, info, nil return clientKey, info, nil
} }
func (s *Server) recvPacket(br *bufio.Reader, frameLen uint32) (dstKey key.Public, contents []byte, err error) { func (s *Server) recvPacket(br *bufio.Reader, frameLen uint32) (dstKey key.NodePublic, contents []byte, err error) {
if frameLen < keyLen { if frameLen < keyLen {
return zpub, nil, errors.New("short send packet frame") return zpub, nil, errors.New("short send packet frame")
} }
if err := readPublicKey(br, &dstKey); err != nil { if err := dstKey.ReadRawWithoutAllocating(br); err != nil {
return zpub, nil, err return zpub, nil, err
} }
packetLen := frameLen - keyLen packetLen := frameLen - keyLen
@ -1173,16 +1161,16 @@ func (s *Server) recvPacket(br *bufio.Reader, frameLen uint32) (dstKey key.Publi
} }
// zpub is the key.Public zero value. // zpub is the key.Public zero value.
var zpub key.Public var zpub key.NodePublic
func (s *Server) recvForwardPacket(br *bufio.Reader, frameLen uint32) (srcKey, dstKey key.Public, contents []byte, err error) { func (s *Server) recvForwardPacket(br *bufio.Reader, frameLen uint32) (srcKey, dstKey key.NodePublic, contents []byte, err error) {
if frameLen < keyLen*2 { if frameLen < keyLen*2 {
return zpub, zpub, nil, errors.New("short send packet frame") return zpub, zpub, nil, errors.New("short send packet frame")
} }
if _, err := io.ReadFull(br, srcKey[:]); err != nil { if err := srcKey.ReadRawWithoutAllocating(br); err != nil {
return zpub, zpub, nil, err return zpub, zpub, nil, err
} }
if _, err := io.ReadFull(br, dstKey[:]); err != nil { if err := dstKey.ReadRawWithoutAllocating(br); err != nil {
return zpub, zpub, nil, err return zpub, zpub, nil, err
} }
packetLen := frameLen - keyLen*2 packetLen := frameLen - keyLen*2
@ -1206,19 +1194,19 @@ type sclient struct {
connNum int64 // process-wide unique counter, incremented each Accept connNum int64 // process-wide unique counter, incremented each Accept
s *Server s *Server
nc Conn nc Conn
key key.Public key key.NodePublic
info clientInfo info clientInfo
logf logger.Logf logf logger.Logf
done <-chan struct{} // closed when connection closes done <-chan struct{} // closed when connection closes
remoteAddr string // usually ip:port from net.Conn.RemoteAddr().String() remoteAddr string // usually ip:port from net.Conn.RemoteAddr().String()
remoteIPPort netaddr.IPPort // zero if remoteAddr is not ip:port. remoteIPPort netaddr.IPPort // zero if remoteAddr is not ip:port.
sendQueue chan pkt // packets queued to this client; never closed sendQueue chan pkt // packets queued to this client; never closed
discoSendQueue chan pkt // important packets queued to this client; never closed discoSendQueue chan pkt // important packets queued to this client; never closed
peerGone chan key.Public // write request that a previous sender has disconnected (not used by mesh peers) peerGone chan key.NodePublic // write request that a previous sender has disconnected (not used by mesh peers)
meshUpdate chan struct{} // write request to write peerStateChange meshUpdate chan struct{} // write request to write peerStateChange
canMesh bool // clientInfo had correct mesh token for inter-region routing canMesh bool // clientInfo had correct mesh token for inter-region routing
isDup syncs.AtomicBool // whether more than 1 sclient for key is connected isDup syncs.AtomicBool // whether more than 1 sclient for key is connected
isDisabled syncs.AtomicBool // whether sends to this peer are disabled due to active/active dups isDisabled syncs.AtomicBool // whether sends to this peer are disabled due to active/active dups
// replaceLimiter controls how quickly two connections with // replaceLimiter controls how quickly two connections with
// the same client key can kick each other off the server by // the same client key can kick each other off the server by
@ -1245,14 +1233,14 @@ type sclient struct {
// peerConnState represents whether a peer is connected to the server // peerConnState represents whether a peer is connected to the server
// or not. // or not.
type peerConnState struct { type peerConnState struct {
peer key.Public peer key.NodePublic
present bool present bool
} }
// pkt is a request to write a data frame to an sclient. // pkt is a request to write a data frame to an sclient.
type pkt struct { type pkt struct {
// src is the who's the sender of the packet. // src is the who's the sender of the packet.
src key.Public src key.NodePublic
// enqueuedAt is when a packet was put onto a queue before it was sent, // enqueuedAt is when a packet was put onto a queue before it was sent,
// and is used for reporting metrics on the duration of packets in the queue. // and is used for reporting metrics on the duration of packets in the queue.
@ -1397,23 +1385,23 @@ func (c *sclient) sendKeepAlive() error {
} }
// sendPeerGone sends a peerGone frame, without flushing. // sendPeerGone sends a peerGone frame, without flushing.
func (c *sclient) sendPeerGone(peer key.Public) error { func (c *sclient) sendPeerGone(peer key.NodePublic) error {
c.s.peerGoneFrames.Add(1) c.s.peerGoneFrames.Add(1)
c.setWriteDeadline() c.setWriteDeadline()
if err := writeFrameHeader(c.bw.bw(), framePeerGone, keyLen); err != nil { if err := writeFrameHeader(c.bw.bw(), framePeerGone, keyLen); err != nil {
return err return err
} }
_, err := c.bw.Write(peer[:]) _, err := c.bw.Write(peer.AppendTo(nil))
return err return err
} }
// sendPeerPresent sends a peerPresent frame, without flushing. // sendPeerPresent sends a peerPresent frame, without flushing.
func (c *sclient) sendPeerPresent(peer key.Public) error { func (c *sclient) sendPeerPresent(peer key.NodePublic) error {
c.setWriteDeadline() c.setWriteDeadline()
if err := writeFrameHeader(c.bw.bw(), framePeerPresent, keyLen); err != nil { if err := writeFrameHeader(c.bw.bw(), framePeerPresent, keyLen); err != nil {
return err return err
} }
_, err := c.bw.Write(peer[:]) _, err := c.bw.Write(peer.AppendTo(nil))
return err return err
} }
@ -1465,7 +1453,7 @@ func (c *sclient) sendMeshUpdates() error {
// DERPv2. The bytes of contents are only valid until this function // DERPv2. The bytes of contents are only valid until this function
// returns, do not retain slices. // returns, do not retain slices.
// It does not flush its bufio.Writer. // It does not flush its bufio.Writer.
func (c *sclient) sendPacket(srcKey key.Public, contents []byte) (err error) { func (c *sclient) sendPacket(srcKey key.NodePublic, contents []byte) (err error) {
defer func() { defer func() {
// Stats update. // Stats update.
if err != nil { if err != nil {
@ -1481,14 +1469,13 @@ func (c *sclient) sendPacket(srcKey key.Public, contents []byte) (err error) {
withKey := !srcKey.IsZero() withKey := !srcKey.IsZero()
pktLen := len(contents) pktLen := len(contents)
if withKey { if withKey {
pktLen += len(srcKey) pktLen += srcKey.RawLen()
} }
if err = writeFrameHeader(c.bw.bw(), frameRecvPacket, uint32(pktLen)); err != nil { if err = writeFrameHeader(c.bw.bw(), frameRecvPacket, uint32(pktLen)); err != nil {
return err return err
} }
if withKey { if withKey {
err := writePublicKey(c.bw.bw(), &srcKey) if err := srcKey.WriteRawWithoutAllocating(c.bw.bw()); err != nil {
if err != nil {
return err return err
} }
} }
@ -1498,7 +1485,7 @@ func (c *sclient) sendPacket(srcKey key.Public, contents []byte) (err error) {
// AddPacketForwarder registers fwd as a packet forwarder for dst. // AddPacketForwarder registers fwd as a packet forwarder for dst.
// fwd must be comparable. // fwd must be comparable.
func (s *Server) AddPacketForwarder(dst key.Public, fwd PacketForwarder) { func (s *Server) AddPacketForwarder(dst key.NodePublic, fwd PacketForwarder) {
s.mu.Lock() s.mu.Lock()
defer s.mu.Unlock() defer s.mu.Unlock()
if prev, ok := s.clientsMesh[dst]; ok { if prev, ok := s.clientsMesh[dst]; ok {
@ -1530,7 +1517,7 @@ func (s *Server) AddPacketForwarder(dst key.Public, fwd PacketForwarder) {
// RemovePacketForwarder removes fwd as a packet forwarder for dst. // RemovePacketForwarder removes fwd as a packet forwarder for dst.
// fwd must be comparable. // fwd must be comparable.
func (s *Server) RemovePacketForwarder(dst key.Public, fwd PacketForwarder) { func (s *Server) RemovePacketForwarder(dst key.NodePublic, fwd PacketForwarder) {
s.mu.Lock() s.mu.Lock()
defer s.mu.Unlock() defer s.mu.Unlock()
v, ok := s.clientsMesh[dst] v, ok := s.clientsMesh[dst]
@ -1592,7 +1579,7 @@ func (m multiForwarder) maxVal() (max uint8) {
return return
} }
func (m multiForwarder) ForwardPacket(src, dst key.Public, payload []byte) error { func (m multiForwarder) ForwardPacket(src, dst key.NodePublic, payload []byte) error {
var fwd PacketForwarder var fwd PacketForwarder
var lowest uint8 var lowest uint8
for k, v := range m { for k, v := range m {
@ -1692,37 +1679,6 @@ func (s *Server) ConsistencyCheck() error {
return errors.New(strings.Join(errs, ", ")) return errors.New(strings.Join(errs, ", "))
} }
// readPublicKey reads key from br.
// It is ~4x slower than io.ReadFull(br, key),
// but it prevents key from escaping and thus being allocated.
// If io.ReadFull(br, key) does not cause key to escape, use that instead.
func readPublicKey(br *bufio.Reader, key *key.Public) error {
// Do io.ReadFull(br, key), but one byte at a time, to avoid allocation.
for i := range key {
b, err := br.ReadByte()
if err != nil {
return err
}
key[i] = b
}
return nil
}
// writePublicKey writes key to bw.
// It is ~3x slower than bw.Write(key[:]),
// but it prevents key from escaping and thus being allocated.
// If bw.Write(key[:]) does not cause key to escape, use that instead.
func writePublicKey(bw *bufio.Writer, key *key.Public) error {
// Do bw.Write(key[:]), but one byte at a time to avoid allocation.
for _, b := range key {
err := bw.WriteByte(b)
if err != nil {
return err
}
}
return nil
}
const minTimeBetweenLogs = 2 * time.Second const minTimeBetweenLogs = 2 * time.Second
// BytesSentRecv records the number of bytes that have been sent since the last traffic check // BytesSentRecv records the number of bytes that have been sent since the last traffic check
@ -1731,7 +1687,7 @@ type BytesSentRecv struct {
Sent uint64 Sent uint64
Recv uint64 Recv uint64
// Key is the public key of the client which sent/received these bytes. // Key is the public key of the client which sent/received these bytes.
Key key.Public Key key.NodePublic
} }
// parseSSOutput parses the output from the specific call to ss in ServeDebugTraffic. // parseSSOutput parses the output from the specific call to ss in ServeDebugTraffic.

119
derp/derp_test.go
Unescape Escape View File

@ -8,7 +8,6 @@ import (
"bufio" "bufio"
"bytes" "bytes"
"context" "context"
crand "crypto/rand"
"crypto/x509" "crypto/x509"
"encoding/json" "encoding/json"
"errors" "errors"
@ -23,20 +22,13 @@ import (
"testing" "testing"
"time" "time"
"go4.org/mem"
"golang.org/x/time/rate" "golang.org/x/time/rate"
"tailscale.com/net/nettest" "tailscale.com/net/nettest"
"tailscale.com/types/key" "tailscale.com/types/key"
"tailscale.com/types/logger" "tailscale.com/types/logger"
) )
func newPrivateKey(tb testing.TB) (k key.Private) {
tb.Helper()
if _, err := crand.Read(k[:]); err != nil {
tb.Fatal(err)
}
return
}
func TestClientInfoUnmarshal(t *testing.T) { func TestClientInfoUnmarshal(t *testing.T) {
for i, in := range []string{ for i, in := range []string{
`{"Version":5,"MeshKey":"abc"}`, `{"Version":5,"MeshKey":"abc"}`,
@ -54,15 +46,15 @@ func TestClientInfoUnmarshal(t *testing.T) {
} }
func TestSendRecv(t *testing.T) { func TestSendRecv(t *testing.T) {
serverPrivateKey := newPrivateKey(t) serverPrivateKey := key.NewNode()
s := NewServer(serverPrivateKey, t.Logf) s := NewServer(serverPrivateKey, t.Logf)
defer s.Close() defer s.Close()
const numClients = 3 const numClients = 3
var clientPrivateKeys []key.Private var clientPrivateKeys []key.NodePrivate
var clientKeys []key.Public var clientKeys []key.NodePublic
for i := 0; i < numClients; i++ { for i := 0; i < numClients; i++ {
priv := newPrivateKey(t) priv := key.NewNode()
clientPrivateKeys = append(clientPrivateKeys, priv) clientPrivateKeys = append(clientPrivateKeys, priv)
clientKeys = append(clientKeys, priv.Public()) clientKeys = append(clientKeys, priv.Public())
} }
@ -225,7 +217,7 @@ func TestSendRecv(t *testing.T) {
} }
func TestSendFreeze(t *testing.T) { func TestSendFreeze(t *testing.T) {
serverPrivateKey := newPrivateKey(t) serverPrivateKey := key.NewNode()
s := NewServer(serverPrivateKey, t.Logf) s := NewServer(serverPrivateKey, t.Logf)
defer s.Close() defer s.Close()
s.WriteTimeout = 100 * time.Millisecond s.WriteTimeout = 100 * time.Millisecond
@ -238,7 +230,7 @@ func TestSendFreeze(t *testing.T) {
// Then cathy stops processing messsages. // Then cathy stops processing messsages.
// That should not interfere with alice talking to bob. // That should not interfere with alice talking to bob.
newClient := func(name string, k key.Private) (c *Client, clientConn nettest.Conn) { newClient := func(name string, k key.NodePrivate) (c *Client, clientConn nettest.Conn) {
t.Helper() t.Helper()
c1, c2 := nettest.NewConn(name, 1024) c1, c2 := nettest.NewConn(name, 1024)
go s.Accept(c1, bufio.NewReadWriter(bufio.NewReader(c1), bufio.NewWriter(c1)), name) go s.Accept(c1, bufio.NewReadWriter(bufio.NewReader(c1), bufio.NewWriter(c1)), name)
@ -252,13 +244,13 @@ func TestSendFreeze(t *testing.T) {
return c, c2 return c, c2
} }
aliceKey := newPrivateKey(t) aliceKey := key.NewNode()
aliceClient, aliceConn := newClient("alice", aliceKey) aliceClient, aliceConn := newClient("alice", aliceKey)
bobKey := newPrivateKey(t) bobKey := key.NewNode()
bobClient, bobConn := newClient("bob", bobKey) bobClient, bobConn := newClient("bob", bobKey)
cathyKey := newPrivateKey(t) cathyKey := key.NewNode()
cathyClient, cathyConn := newClient("cathy", cathyKey) cathyClient, cathyConn := newClient("cathy", cathyKey)
var ( var (
@ -427,7 +419,7 @@ type testServer struct {
logf logger.Logf logf logger.Logf
mu sync.Mutex mu sync.Mutex
pubName map[key.Public]string pubName map[key.NodePublic]string
clients map[*testClient]bool clients map[*testClient]bool
} }
@ -437,14 +429,14 @@ func (ts *testServer) addTestClient(c *testClient) {
ts.clients[c] = true ts.clients[c] = true
} }
func (ts *testServer) addKeyName(k key.Public, name string) { func (ts *testServer) addKeyName(k key.NodePublic, name string) {
ts.mu.Lock() ts.mu.Lock()
defer ts.mu.Unlock() defer ts.mu.Unlock()
ts.pubName[k] = name ts.pubName[k] = name
ts.logf("test adding named key %q for %x", name, k) ts.logf("test adding named key %q for %x", name, k)
} }
func (ts *testServer) keyName(k key.Public) string { func (ts *testServer) keyName(k key.NodePublic) string {
ts.mu.Lock() ts.mu.Lock()
defer ts.mu.Unlock() defer ts.mu.Unlock()
if name, ok := ts.pubName[k]; ok { if name, ok := ts.pubName[k]; ok {
@ -465,7 +457,7 @@ func (ts *testServer) close(t *testing.T) error {
func newTestServer(t *testing.T) *testServer { func newTestServer(t *testing.T) *testServer {
t.Helper() t.Helper()
logf := logger.WithPrefix(t.Logf, "derp-server: ") logf := logger.WithPrefix(t.Logf, "derp-server: ")
s := NewServer(newPrivateKey(t), logf) s := NewServer(key.NewNode(), logf)
s.SetMeshKey("mesh-key") s.SetMeshKey("mesh-key")
ln, err := net.Listen("tcp", "127.0.0.1:0") ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil { if err != nil {
@ -491,7 +483,7 @@ func newTestServer(t *testing.T) *testServer {
ln: ln, ln: ln,
logf: logf, logf: logf,
clients: map[*testClient]bool{}, clients: map[*testClient]bool{},
pubName: map[key.Public]string{}, pubName: map[key.NodePublic]string{},
} }
} }
@ -499,18 +491,18 @@ type testClient struct {
name string name string
c *Client c *Client
nc net.Conn nc net.Conn
pub key.Public pub key.NodePublic
ts *testServer ts *testServer
closed bool closed bool
} }
func newTestClient(t *testing.T, ts *testServer, name string, newClient func(net.Conn, key.Private, logger.Logf) (*Client, error)) *testClient { func newTestClient(t *testing.T, ts *testServer, name string, newClient func(net.Conn, key.NodePrivate, logger.Logf) (*Client, error)) *testClient {
t.Helper() t.Helper()
nc, err := net.Dial("tcp", ts.ln.Addr().String()) nc, err := net.Dial("tcp", ts.ln.Addr().String())
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
} }
key := newPrivateKey(t) key := key.NewNode()
ts.addKeyName(key.Public(), name) ts.addKeyName(key.Public(), name)
c, err := newClient(nc, key, logger.WithPrefix(t.Logf, "client-"+name+": ")) c, err := newClient(nc, key, logger.WithPrefix(t.Logf, "client-"+name+": "))
if err != nil { if err != nil {
@ -528,7 +520,7 @@ func newTestClient(t *testing.T, ts *testServer, name string, newClient func(net
} }
func newRegularClient(t *testing.T, ts *testServer, name string) *testClient { func newRegularClient(t *testing.T, ts *testServer, name string) *testClient {
return newTestClient(t, ts, name, func(nc net.Conn, priv key.Private, logf logger.Logf) (*Client, error) { return newTestClient(t, ts, name, func(nc net.Conn, priv key.NodePrivate, logf logger.Logf) (*Client, error) {
brw := bufio.NewReadWriter(bufio.NewReader(nc), bufio.NewWriter(nc)) brw := bufio.NewReadWriter(bufio.NewReader(nc), bufio.NewWriter(nc))
c, err := NewClient(priv, nc, brw, logf) c, err := NewClient(priv, nc, brw, logf)
if err != nil { if err != nil {
@ -541,7 +533,7 @@ func newRegularClient(t *testing.T, ts *testServer, name string) *testClient {
} }
func newTestWatcher(t *testing.T, ts *testServer, name string) *testClient { func newTestWatcher(t *testing.T, ts *testServer, name string) *testClient {
return newTestClient(t, ts, name, func(nc net.Conn, priv key.Private, logf logger.Logf) (*Client, error) { return newTestClient(t, ts, name, func(nc net.Conn, priv key.NodePrivate, logf logger.Logf) (*Client, error) {
brw := bufio.NewReadWriter(bufio.NewReader(nc), bufio.NewWriter(nc)) brw := bufio.NewReadWriter(bufio.NewReader(nc), bufio.NewWriter(nc))
c, err := NewClient(priv, nc, brw, logf, MeshKey("mesh-key")) c, err := NewClient(priv, nc, brw, logf, MeshKey("mesh-key"))
if err != nil { if err != nil {
@ -555,9 +547,9 @@ func newTestWatcher(t *testing.T, ts *testServer, name string) *testClient {
}) })
} }
func (tc *testClient) wantPresent(t *testing.T, peers ...key.Public) { func (tc *testClient) wantPresent(t *testing.T, peers ...key.NodePublic) {
t.Helper() t.Helper()
want := map[key.Public]bool{} want := map[key.NodePublic]bool{}
for _, k := range peers { for _, k := range peers {
want[k] = true want[k] = true
} }
@ -569,7 +561,7 @@ func (tc *testClient) wantPresent(t *testing.T, peers ...key.Public) {
} }
switch m := m.(type) { switch m := m.(type) {
case PeerPresentMessage: case PeerPresentMessage:
got := key.Public(m) got := key.NodePublic(m)
if !want[got] { if !want[got] {
t.Fatalf("got peer present for %v; want present for %v", tc.ts.keyName(got), logger.ArgWriter(func(bw *bufio.Writer) { t.Fatalf("got peer present for %v; want present for %v", tc.ts.keyName(got), logger.ArgWriter(func(bw *bufio.Writer) {
for _, pub := range peers { for _, pub := range peers {
@ -587,7 +579,7 @@ func (tc *testClient) wantPresent(t *testing.T, peers ...key.Public) {
} }
} }
func (tc *testClient) wantGone(t *testing.T, peer key.Public) { func (tc *testClient) wantGone(t *testing.T, peer key.NodePublic) {
t.Helper() t.Helper()
m, err := tc.c.recvTimeout(time.Second) m, err := tc.c.recvTimeout(time.Second)
if err != nil { if err != nil {
@ -595,7 +587,7 @@ func (tc *testClient) wantGone(t *testing.T, peer key.Public) {
} }
switch m := m.(type) { switch m := m.(type) {
case PeerGoneMessage: case PeerGoneMessage:
got := key.Public(m) got := key.NodePublic(m)
if peer != got { if peer != got {
t.Errorf("got gone message for %v; want gone for %v", tc.ts.keyName(got), tc.ts.keyName(peer)) t.Errorf("got gone message for %v; want gone for %v", tc.ts.keyName(got), tc.ts.keyName(peer))
} }
@ -654,21 +646,24 @@ func TestWatch(t *testing.T) {
type testFwd int type testFwd int
func (testFwd) ForwardPacket(key.Public, key.Public, []byte) error { panic("not called in tests") } func (testFwd) ForwardPacket(key.NodePublic, key.NodePublic, []byte) error {
panic("not called in tests")
}
func pubAll(b byte) (ret key.Public) { func pubAll(b byte) (ret key.NodePublic) {
for i := range ret { var bs [32]byte
ret[i] = b for i := range bs {
bs[i] = b
} }
return return key.NodePublicFromRaw32(mem.B(bs[:]))
} }
func TestForwarderRegistration(t *testing.T) { func TestForwarderRegistration(t *testing.T) {
s := &Server{ s := &Server{
clients: make(map[key.Public]clientSet), clients: make(map[key.NodePublic]clientSet),
clientsMesh: map[key.Public]PacketForwarder{}, clientsMesh: map[key.NodePublic]PacketForwarder{},
} }
want := func(want map[key.Public]PacketForwarder) { want := func(want map[key.NodePublic]PacketForwarder) {
t.Helper() t.Helper()
if got := s.clientsMesh; !reflect.DeepEqual(got, want) { if got := s.clientsMesh; !reflect.DeepEqual(got, want) {
t.Fatalf("mismatch\n got: %v\nwant: %v\n", got, want) t.Fatalf("mismatch\n got: %v\nwant: %v\n", got, want)
@ -687,28 +682,28 @@ func TestForwarderRegistration(t *testing.T) {
s.AddPacketForwarder(u1, testFwd(1)) s.AddPacketForwarder(u1, testFwd(1))
s.AddPacketForwarder(u2, testFwd(2)) s.AddPacketForwarder(u2, testFwd(2))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(1), u1: testFwd(1),
u2: testFwd(2), u2: testFwd(2),
}) })
// Verify a remove of non-registered forwarder is no-op. // Verify a remove of non-registered forwarder is no-op.
s.RemovePacketForwarder(u2, testFwd(999)) s.RemovePacketForwarder(u2, testFwd(999))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(1), u1: testFwd(1),
u2: testFwd(2), u2: testFwd(2),
}) })
// Verify a remove of non-registered user is no-op. // Verify a remove of non-registered user is no-op.
s.RemovePacketForwarder(u3, testFwd(1)) s.RemovePacketForwarder(u3, testFwd(1))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(1), u1: testFwd(1),
u2: testFwd(2), u2: testFwd(2),
}) })
// Actual removal. // Actual removal.
s.RemovePacketForwarder(u2, testFwd(2)) s.RemovePacketForwarder(u2, testFwd(2))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(1), u1: testFwd(1),
}) })
@ -716,7 +711,7 @@ func TestForwarderRegistration(t *testing.T) {
wantCounter(&s.multiForwarderCreated, 0) wantCounter(&s.multiForwarderCreated, 0)
s.AddPacketForwarder(u1, testFwd(100)) s.AddPacketForwarder(u1, testFwd(100))
s.AddPacketForwarder(u1, testFwd(100)) // dup to trigger dup path s.AddPacketForwarder(u1, testFwd(100)) // dup to trigger dup path
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: multiForwarder{ u1: multiForwarder{
testFwd(1): 1, testFwd(1): 1,
testFwd(100): 2, testFwd(100): 2,
@ -726,7 +721,7 @@ func TestForwarderRegistration(t *testing.T) {
// Removing a forwarder in a multi set that doesn't exist; does nothing. // Removing a forwarder in a multi set that doesn't exist; does nothing.
s.RemovePacketForwarder(u1, testFwd(55)) s.RemovePacketForwarder(u1, testFwd(55))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: multiForwarder{ u1: multiForwarder{
testFwd(1): 1, testFwd(1): 1,
testFwd(100): 2, testFwd(100): 2,
@ -737,7 +732,7 @@ func TestForwarderRegistration(t *testing.T) {
// from being a multiForwarder. // from being a multiForwarder.
wantCounter(&s.multiForwarderDeleted, 0) wantCounter(&s.multiForwarderDeleted, 0)
s.RemovePacketForwarder(u1, testFwd(1)) s.RemovePacketForwarder(u1, testFwd(1))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(100), u1: testFwd(100),
}) })
wantCounter(&s.multiForwarderDeleted, 1) wantCounter(&s.multiForwarderDeleted, 1)
@ -750,18 +745,18 @@ func TestForwarderRegistration(t *testing.T) {
} }
s.clients[u1] = singleClient{u1c} s.clients[u1] = singleClient{u1c}
s.RemovePacketForwarder(u1, testFwd(100)) s.RemovePacketForwarder(u1, testFwd(100))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: nil, u1: nil,
}) })
// But once that client disconnects, it should go away. // But once that client disconnects, it should go away.
s.unregisterClient(u1c) s.unregisterClient(u1c)
want(map[key.Public]PacketForwarder{}) want(map[key.NodePublic]PacketForwarder{})
// But if it already has a forwarder, it's not removed. // But if it already has a forwarder, it's not removed.
s.AddPacketForwarder(u1, testFwd(2)) s.AddPacketForwarder(u1, testFwd(2))
s.unregisterClient(u1c) s.unregisterClient(u1c)
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(2), u1: testFwd(2),
}) })
@ -770,17 +765,17 @@ func TestForwarderRegistration(t *testing.T) {
// from nil to the new one, not a multiForwarder. // from nil to the new one, not a multiForwarder.
s.clients[u1] = singleClient{u1c} s.clients[u1] = singleClient{u1c}
s.clientsMesh[u1] = nil s.clientsMesh[u1] = nil
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: nil, u1: nil,
}) })
s.AddPacketForwarder(u1, testFwd(3)) s.AddPacketForwarder(u1, testFwd(3))
want(map[key.Public]PacketForwarder{ want(map[key.NodePublic]PacketForwarder{
u1: testFwd(3), u1: testFwd(3),
}) })
} }
func TestMetaCert(t *testing.T) { func TestMetaCert(t *testing.T) {
priv := newPrivateKey(t) priv := key.NewNode()
pub := priv.Public() pub := priv.Public()
s := NewServer(priv, t.Logf) s := NewServer(priv, t.Logf)
@ -792,7 +787,7 @@ func TestMetaCert(t *testing.T) {
if fmt.Sprint(cert.SerialNumber) != fmt.Sprint(ProtocolVersion) { if fmt.Sprint(cert.SerialNumber) != fmt.Sprint(ProtocolVersion) {
t.Errorf("serial = %v; want %v", cert.SerialNumber, ProtocolVersion) t.Errorf("serial = %v; want %v", cert.SerialNumber, ProtocolVersion)
} }
if g, w := cert.Subject.CommonName, fmt.Sprintf("derpkey%x", pub[:]); g != w { if g, w := cert.Subject.CommonName, fmt.Sprintf("derpkey%s", pub.UntypedHexString()); g != w {
t.Errorf("CommonName = %q; want %q", g, w) t.Errorf("CommonName = %q; want %q", g, w)
} }
} }
@ -882,10 +877,10 @@ func TestClientSendPong(t *testing.T) {
} }
func TestServerDupClients(t *testing.T) { func TestServerDupClients(t *testing.T) {
serverPriv := newPrivateKey(t) serverPriv := key.NewNode()
var s *Server var s *Server
clientPriv := newPrivateKey(t) clientPriv := key.NewNode()
clientPub := clientPriv.Public() clientPub := clientPriv.Public()
var c1, c2, c3 *sclient var c1, c2, c3 *sclient
@ -1141,11 +1136,11 @@ func BenchmarkSendRecv(b *testing.B) {
} }
func benchmarkSendRecvSize(b *testing.B, packetSize int) { func benchmarkSendRecvSize(b *testing.B, packetSize int) {
serverPrivateKey := newPrivateKey(b) serverPrivateKey := key.NewNode()
s := NewServer(serverPrivateKey, logger.Discard) s := NewServer(serverPrivateKey, logger.Discard)
defer s.Close() defer s.Close()
key := newPrivateKey(b) key := key.NewNode()
clientKey := key.Public() clientKey := key.Public()
ln, err := net.Listen("tcp", "127.0.0.1:0") ln, err := net.Listen("tcp", "127.0.0.1:0")
@ -1279,7 +1274,7 @@ func TestClientSendRateLimiting(t *testing.T) {
c.setSendRateLimiter(ServerInfoMessage{}) c.setSendRateLimiter(ServerInfoMessage{})
pkt := make([]byte, 1000) pkt := make([]byte, 1000)
if err := c.send(key.Public{}, pkt); err != nil { if err := c.send(key.NodePublic{}, pkt); err != nil {
t.Fatal(err) t.Fatal(err)
} }
writes1, bytes1 := cw.Stats() writes1, bytes1 := cw.Stats()
@ -1290,7 +1285,7 @@ func TestClientSendRateLimiting(t *testing.T) {
// Flood should all succeed. // Flood should all succeed.
cw.ResetStats() cw.ResetStats()
for i := 0; i < 1000; i++ { for i := 0; i < 1000; i++ {
if err := c.send(key.Public{}, pkt); err != nil { if err := c.send(key.NodePublic{}, pkt); err != nil {
t.Fatal(err) t.Fatal(err)
} }
} }
@ -1309,7 +1304,7 @@ func TestClientSendRateLimiting(t *testing.T) {
TokenBucketBytesBurst: int(bytes1 * 2), TokenBucketBytesBurst: int(bytes1 * 2),
}) })
for i := 0; i < 1000; i++ { for i := 0; i < 1000; i++ {
if err := c.send(key.Public{}, pkt); err != nil { if err := c.send(key.NodePublic{}, pkt); err != nil {
t.Fatal(err) t.Fatal(err)
} }
} }

28
derp/derphttp/derphttp_client.go
Unescape Escape View File

@ -53,7 +53,7 @@ type Client struct {
MeshKey string // optional; for trusted clients MeshKey string // optional; for trusted clients
IsProber bool // optional; for probers to optional declare themselves as such IsProber bool // optional; for probers to optional declare themselves as such
privateKey key.Private privateKey key.NodePrivate
logf logger.Logf logf logger.Logf
dialer func(ctx context.Context, network, addr string) (net.Conn, error) dialer func(ctx context.Context, network, addr string) (net.Conn, error)
@ -71,12 +71,12 @@ type Client struct {
netConn io.Closer netConn io.Closer
client *derp.Client client *derp.Client
connGen int // incremented once per new connection; valid values are >0 connGen int // incremented once per new connection; valid values are >0
serverPubKey key.Public serverPubKey key.NodePublic
} }
// NewRegionClient returns a new DERP-over-HTTP client. It connects lazily. // NewRegionClient returns a new DERP-over-HTTP client. It connects lazily.
// To trigger a connection, use Connect. // To trigger a connection, use Connect.
func NewRegionClient(privateKey key.Private, logf logger.Logf, getRegion func() *tailcfg.DERPRegion) *Client { func NewRegionClient(privateKey key.NodePrivate, logf logger.Logf, getRegion func() *tailcfg.DERPRegion) *Client {
ctx, cancel := context.WithCancel(context.Background()) ctx, cancel := context.WithCancel(context.Background())
c := &Client{ c := &Client{
privateKey: privateKey, privateKey: privateKey,
@ -96,7 +96,7 @@ func NewNetcheckClient(logf logger.Logf) *Client {
// NewClient returns a new DERP-over-HTTP client. It connects lazily. // NewClient returns a new DERP-over-HTTP client. It connects lazily.
// To trigger a connection, use Connect. // To trigger a connection, use Connect.
func NewClient(privateKey key.Private, serverURL string, logf logger.Logf) (*Client, error) { func NewClient(privateKey key.NodePrivate, serverURL string, logf logger.Logf) (*Client, error) {
u, err := url.Parse(serverURL) u, err := url.Parse(serverURL)
if err != nil { if err != nil {
return nil, fmt.Errorf("derphttp.NewClient: %v", err) return nil, fmt.Errorf("derphttp.NewClient: %v", err)
@ -127,14 +127,14 @@ func (c *Client) Connect(ctx context.Context) error {
// //
// It only returns a non-zero value once a connection has succeeded // It only returns a non-zero value once a connection has succeeded
// from an earlier call. // from an earlier call.
func (c *Client) ServerPublicKey() key.Public { func (c *Client) ServerPublicKey() key.NodePublic {
c.mu.Lock() c.mu.Lock()
defer c.mu.Unlock() defer c.mu.Unlock()
return c.serverPubKey return c.serverPubKey
} }
// SelfPublicKey returns our own public key. // SelfPublicKey returns our own public key.
func (c *Client) SelfPublicKey() key.Public { func (c *Client) SelfPublicKey() key.NodePublic {
return c.privateKey.Public() return c.privateKey.Public()
} }
@ -315,8 +315,8 @@ func (c *Client) connect(ctx context.Context, caller string) (client *derp.Clien
} }
}() }()
var httpConn net.Conn // a TCP conn or a TLS conn; what we speak HTTP to var httpConn net.Conn // a TCP conn or a TLS conn; what we speak HTTP to
var serverPub key.Public // or zero if unknown (if not using TLS or TLS middlebox eats it) var serverPub key.NodePublic // or zero if unknown (if not using TLS or TLS middlebox eats it)
var serverProtoVersion int var serverProtoVersion int
if c.useHTTPS() { if c.useHTTPS() {
tlsConn := c.tlsClient(tcpConn, node) tlsConn := c.tlsClient(tcpConn, node)
@ -687,7 +687,7 @@ func (c *Client) dialNodeUsingProxy(ctx context.Context, n *tailcfg.DERPNode, pr
return proxyConn, nil return proxyConn, nil
} }
func (c *Client) Send(dstKey key.Public, b []byte) error { func (c *Client) Send(dstKey key.NodePublic, b []byte) error {
client, _, err := c.connect(context.TODO(), "derphttp.Client.Send") client, _, err := c.connect(context.TODO(), "derphttp.Client.Send")
if err != nil { if err != nil {
return err return err
@ -698,7 +698,7 @@ func (c *Client) Send(dstKey key.Public, b []byte) error {
return err return err
} }
func (c *Client) ForwardPacket(from, to key.Public, b []byte) error { func (c *Client) ForwardPacket(from, to key.NodePublic, b []byte) error {
client, _, err := c.connect(context.TODO(), "derphttp.Client.ForwardPacket") client, _, err := c.connect(context.TODO(), "derphttp.Client.ForwardPacket")
if err != nil { if err != nil {
return err return err
@ -779,7 +779,7 @@ func (c *Client) WatchConnectionChanges() error {
// ClosePeer asks the server to close target's TCP connection. // ClosePeer asks the server to close target's TCP connection.
// //
// Only trusted connections (using MeshKey) are allowed to use this. // Only trusted connections (using MeshKey) are allowed to use this.
func (c *Client) ClosePeer(target key.Public) error { func (c *Client) ClosePeer(target key.NodePublic) error {
client, _, err := c.connect(context.TODO(), "derphttp.Client.ClosePeer") client, _, err := c.connect(context.TODO(), "derphttp.Client.ClosePeer")
if err != nil { if err != nil {
return err return err
@ -863,15 +863,15 @@ func (c *Client) closeForReconnect(brokenClient *derp.Client) {
var ErrClientClosed = errors.New("derphttp.Client closed") var ErrClientClosed = errors.New("derphttp.Client closed")
func parseMetaCert(certs []*x509.Certificate) (serverPub key.Public, serverProtoVersion int) { func parseMetaCert(certs []*x509.Certificate) (serverPub key.NodePublic, serverProtoVersion int) {
for _, cert := range certs { for _, cert := range certs {
if cn := cert.Subject.CommonName; strings.HasPrefix(cn, "derpkey") { if cn := cert.Subject.CommonName; strings.HasPrefix(cn, "derpkey") {
var err error var err error
serverPub, err = key.NewPublicFromHexMem(mem.S(strings.TrimPrefix(cn, "derpkey"))) serverPub, err = key.ParseNodePublicUntyped(mem.S(strings.TrimPrefix(cn, "derpkey")))
if err == nil && cert.SerialNumber.BitLen() <= 8 { // supports up to version 255 if err == nil && cert.SerialNumber.BitLen() <= 8 { // supports up to version 255
return serverPub, int(cert.SerialNumber.Int64()) return serverPub, int(cert.SerialNumber.Int64())
} }
} }
} }
return key.Public{}, 0 return key.NodePublic{}, 0
} }

4
derp/derphttp/derphttp_server.go
Unescape Escape View File

@ -51,9 +51,9 @@ func Handler(s *derp.Server) http.Handler {
"Upgrade: DERP\r\n"+ "Upgrade: DERP\r\n"+
"Connection: Upgrade\r\n"+ "Connection: Upgrade\r\n"+
"Derp-Version: %v\r\n"+ "Derp-Version: %v\r\n"+
"Derp-Public-Key: %x\r\n\r\n", "Derp-Public-Key: %s\r\n\r\n",
derp.ProtocolVersion, derp.ProtocolVersion,
pubKey[:]) pubKey.UntypedHexString())
} }
s.Accept(netConn, conn, netConn.RemoteAddr().String()) s.Accept(netConn, conn, netConn.RemoteAddr().String())

8
derp/derphttp/derphttp_test.go
Unescape Escape View File

@ -18,13 +18,13 @@ import (
) )
func TestSendRecv(t *testing.T) { func TestSendRecv(t *testing.T) {
serverPrivateKey := key.NewPrivate() serverPrivateKey := key.NewNode()
const numClients = 3 const numClients = 3
var clientPrivateKeys []key.Private var clientPrivateKeys []key.NodePrivate
var clientKeys []key.Public var clientKeys []key.NodePublic
for i := 0; i < numClients; i++ { for i := 0; i < numClients; i++ {
priv := key.NewPrivate() priv := key.NewNode()
clientPrivateKeys = append(clientPrivateKeys, priv) clientPrivateKeys = append(clientPrivateKeys, priv)
clientKeys = append(clientKeys, priv.Public()) clientKeys = append(clientKeys, priv.Public())
} }

12
derp/derphttp/mesh_client.go
Unescape Escape View File

@ -27,7 +27,7 @@ import (
// //
// To force RunWatchConnectionLoop to return quickly, its ctx needs to // To force RunWatchConnectionLoop to return quickly, its ctx needs to
// be closed, and c itself needs to be closed. // be closed, and c itself needs to be closed.
func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key.Public, infoLogf logger.Logf, add, remove func(key.Public)) { func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key.NodePublic, infoLogf logger.Logf, add, remove func(key.NodePublic)) {
if infoLogf == nil { if infoLogf == nil {
infoLogf = logger.Discard infoLogf = logger.Discard
} }
@ -36,7 +36,7 @@ func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key
const statusInterval = 10 * time.Second const statusInterval = 10 * time.Second
var ( var (
mu sync.Mutex mu sync.Mutex
present = map[key.Public]bool{} present = map[key.NodePublic]bool{}
loggedConnected = false loggedConnected = false
) )
clear := func() { clear := func() {
@ -49,7 +49,7 @@ func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key
for k := range present { for k := range present {
remove(k) remove(k)
} }
present = map[key.Public]bool{} present = map[key.NodePublic]bool{}
} }
lastConnGen := 0 lastConnGen := 0
lastStatus := time.Now() lastStatus := time.Now()
@ -69,7 +69,7 @@ func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key
}) })
defer timer.Stop() defer timer.Stop()
updatePeer := func(k key.Public, isPresent bool) { updatePeer := func(k key.NodePublic, isPresent bool) {
if isPresent { if isPresent {
add(k) add(k)
} else { } else {
@ -127,9 +127,9 @@ func (c *Client) RunWatchConnectionLoop(ctx context.Context, ignoreServerKey key
} }
switch m := m.(type) { switch m := m.(type) {
case derp.PeerPresentMessage: case derp.PeerPresentMessage:
updatePeer(key.Public(m), true) updatePeer(key.NodePublic(m), true)
case derp.PeerGoneMessage: case derp.PeerGoneMessage:
updatePeer(key.Public(m), false) updatePeer(key.NodePublic(m), false)
default: default:
continue continue
} }

7
tstest/integration/integration.go
Unescape Escape View File

@ -10,7 +10,6 @@ package integration
import ( import (
"bytes" "bytes"
"crypto/rand"
"crypto/tls" "crypto/tls"
"encoding/json" "encoding/json"
"fmt" "fmt"
@ -126,11 +125,7 @@ func exe() string {
func RunDERPAndSTUN(t testing.TB, logf logger.Logf, ipAddress string) (derpMap *tailcfg.DERPMap) { func RunDERPAndSTUN(t testing.TB, logf logger.Logf, ipAddress string) (derpMap *tailcfg.DERPMap) {
t.Helper() t.Helper()
var serverPrivateKey key.Private d := derp.NewServer(key.NewNode(), logf)
if _, err := rand.Read(serverPrivateKey[:]); err != nil {
t.Fatal(err)
}
d := derp.NewServer(serverPrivateKey, logf)
ln, err := net.Listen("tcp", net.JoinHostPort(ipAddress, "0")) ln, err := net.Listen("tcp", net.JoinHostPort(ipAddress, "0"))
if err != nil { if err != nil {

12
wgengine/magicsock/magicsock.go
Unescape Escape View File

@ -1340,7 +1340,7 @@ func (c *Conn) derpWriteChanOfAddr(addr netaddr.IPPort, peer key.Public) chan<-
// Note that derphttp.NewRegionClient does not dial the server // Note that derphttp.NewRegionClient does not dial the server
// so it is safe to do under the mu lock. // so it is safe to do under the mu lock.
dc := derphttp.NewRegionClient(c.privateKey, c.logf, func() *tailcfg.DERPRegion { dc := derphttp.NewRegionClient(key.NodePrivateFromRaw32(mem.B(c.privateKey[:])), c.logf, func() *tailcfg.DERPRegion {
if c.connCtx.Err() != nil { if c.connCtx.Err() != nil {
// If we're closing, don't try to acquire the lock. // If we're closing, don't try to acquire the lock.
// We might already be in Conn.Close and the Lock would deadlock. // We might already be in Conn.Close and the Lock would deadlock.
@ -1539,15 +1539,15 @@ func (c *Conn) runDerpReader(ctx context.Context, derpFakeAddr netaddr.IPPort, d
case derp.ReceivedPacket: case derp.ReceivedPacket:
pkt = m pkt = m
res.n = len(m.Data) res.n = len(m.Data)
res.src = m.Source res.src = m.Source.AsPublic()
if logDerpVerbose { if logDerpVerbose {
c.logf("magicsock: got derp-%v packet: %q", regionID, m.Data) c.logf("magicsock: got derp-%v packet: %q", regionID, m.Data)
} }
// If this is a new sender we hadn't seen before, remember it and // If this is a new sender we hadn't seen before, remember it and
// register a route for this peer. // register a route for this peer.
if _, ok := peerPresent[m.Source]; !ok { if _, ok := peerPresent[res.src]; !ok {
peerPresent[m.Source] = true peerPresent[res.src] = true
c.addDerpPeerRoute(m.Source, regionID, dc) c.addDerpPeerRoute(res.src, regionID, dc)
} }
case derp.PingMessage: case derp.PingMessage:
// Best effort reply to the ping. // Best effort reply to the ping.
@ -1601,7 +1601,7 @@ func (c *Conn) runDerpWriter(ctx context.Context, dc *derphttp.Client, ch <-chan
case <-ctx.Done(): case <-ctx.Done():
return return
case wr := <-ch: case wr := <-ch:
err := dc.Send(wr.pubKey, wr.b) err := dc.Send(key.NodePublicFromRaw32(mem.B(wr.pubKey[:])), wr.b)
if err != nil { if err != nil {
c.logf("magicsock: derp.Send(%v): %v", wr.addr, err) c.logf("magicsock: derp.Send(%v): %v", wr.addr, err)
} }

6
wgengine/magicsock/magicsock_test.go
Unescape Escape View File

@ -81,11 +81,7 @@ func (c *Conn) WaitReady(t testing.TB) {
} }
func runDERPAndStun(t *testing.T, logf logger.Logf, l nettype.PacketListener, stunIP netaddr.IP) (derpMap *tailcfg.DERPMap, cleanup func()) { func runDERPAndStun(t *testing.T, logf logger.Logf, l nettype.PacketListener, stunIP netaddr.IP) (derpMap *tailcfg.DERPMap, cleanup func()) {
var serverPrivateKey key.Private d := derp.NewServer(key.NewNode(), logf)
if _, err := crand.Read(serverPrivateKey[:]); err != nil {
t.Fatal(err)
}
d := derp.NewServer(serverPrivateKey, logf)
httpsrv := httptest.NewUnstartedServer(derphttp.Handler(d)) httpsrv := httptest.NewUnstartedServer(derphttp.Handler(d))
httpsrv.Config.ErrorLog = logger.StdLogger(logf) httpsrv.Config.ErrorLog = logger.StdLogger(logf)

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