mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-12-23 04:05:39 +00:00
WIP moving IP-specific checks from tuntap to core
This commit is contained in:
Arceliar
parent
bb66851c2b
commit
1147ee1934
@ -46,7 +46,7 @@ type Session struct {
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func (c *Core) GetSelf() Self {
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var self Self
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s := c.PacketConn.PacketConn.Debug.GetSelf()
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s := c.pc.PacketConn.Debug.GetSelf()
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self.Key = s.Key
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self.Root = s.Root
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self.Coords = s.Coords
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@ -55,7 +55,7 @@ func (c *Core) GetSelf() Self {
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func (c *Core) GetPeers() []Peer {
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var peers []Peer
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ps := c.PacketConn.PacketConn.Debug.GetPeers()
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ps := c.pc.PacketConn.Debug.GetPeers()
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for _, p := range ps {
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var info Peer
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info.Key = p.Key
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@ -69,7 +69,7 @@ func (c *Core) GetPeers() []Peer {
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func (c *Core) GetDHT() []DHTEntry {
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var dhts []DHTEntry
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ds := c.PacketConn.PacketConn.Debug.GetDHT()
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ds := c.pc.PacketConn.Debug.GetDHT()
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for _, d := range ds {
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var info DHTEntry
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info.Key = d.Key
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@ -82,7 +82,7 @@ func (c *Core) GetDHT() []DHTEntry {
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func (c *Core) GetPaths() []PathEntry {
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var paths []PathEntry
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ps := c.PacketConn.PacketConn.Debug.GetPaths()
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ps := c.pc.PacketConn.Debug.GetPaths()
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for _, p := range ps {
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var info PathEntry
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info.Key = p.Key
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@ -94,7 +94,7 @@ func (c *Core) GetPaths() []PathEntry {
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func (c *Core) GetSessions() []Session {
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var sessions []Session
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ss := c.PacketConn.Debug.GetSessions()
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ss := c.pc.Debug.GetSessions()
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for _, s := range ss {
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var info Session
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info.Key = s.Key
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@ -25,11 +25,13 @@ type Core struct {
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// We're going to keep our own copy of the provided config - that way we can
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// guarantee that it will be covered by the mutex
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phony.Inbox
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*iw.PacketConn
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pc *iw.PacketConn
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config *config.NodeConfig // Config
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secret ed25519.PrivateKey
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public ed25519.PublicKey
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links links
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proto protoHandler
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store keyStore
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log *log.Logger
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addPeerTimer *time.Timer
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ctx context.Context
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@ -59,8 +61,10 @@ func (c *Core) _init() error {
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c.public = c.secret.Public().(ed25519.PublicKey)
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// TODO check public against current.PublicKey, error if they don't match
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c.PacketConn, err = iw.NewPacketConn(c.secret)
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c.pc, err = iw.NewPacketConn(c.secret)
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c.ctx, c.ctxCancel = context.WithCancel(context.Background())
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c.store.init(c)
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c.proto.init(c)
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return err
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}
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@ -160,7 +164,7 @@ func (c *Core) Stop() {
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func (c *Core) _stop() {
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c.log.Infoln("Stopping...")
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c.ctxCancel()
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c.PacketConn.Close()
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c.pc.Close()
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if c.addPeerTimer != nil {
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c.addPeerTimer.Stop()
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c.addPeerTimer = nil
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@ -173,3 +177,20 @@ func (c *Core) _stop() {
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*/
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c.log.Infoln("Stopped")
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}
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// Implement io.ReadWriteCloser
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func (c *Core) Read(p []byte) (n int, err error) {
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n, err = c.store.readPC(p)
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return
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}
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func (c *Core) Write(p []byte) (n int, err error) {
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n, err = c.store.writePC(p)
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return
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}
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func (c *Core) Close() error {
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c.Stop()
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return nil
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}
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295
src/core/keystore.go
Normal file
295
src/core/keystore.go
Normal file
@ -0,0 +1,295 @@
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package core
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import (
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"crypto/ed25519"
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"errors"
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"fmt"
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"sync"
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"time"
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iwt "github.com/Arceliar/ironwood/types"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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)
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const keyStoreTimeout = 2 * time.Minute
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type keyArray [ed25519.PublicKeySize]byte
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type keyStore struct {
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core *Core
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address address.Address
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subnet address.Subnet
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mutex sync.Mutex
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keyToInfo map[keyArray]*keyInfo
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addrToInfo map[address.Address]*keyInfo
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addrBuffer map[address.Address]*buffer
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subnetToInfo map[address.Subnet]*keyInfo
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subnetBuffer map[address.Subnet]*buffer
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buf []byte // scratch space to prefix with typeSessionTraffic before sending
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}
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type keyInfo struct {
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key keyArray
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address address.Address
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subnet address.Subnet
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timeout *time.Timer // From calling a time.AfterFunc to do cleanup
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}
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type buffer struct {
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packets [][]byte
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timeout *time.Timer
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}
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func (k *keyStore) init(core *Core) {
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k.core = core
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k.address = *address.AddrForKey(k.core.public)
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k.subnet = *address.SubnetForKey(k.core.public)
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k.core.pc.SetOutOfBandHandler(k.oobHandler)
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k.keyToInfo = make(map[keyArray]*keyInfo)
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k.addrToInfo = make(map[address.Address]*keyInfo)
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k.addrBuffer = make(map[address.Address]*buffer)
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k.subnetToInfo = make(map[address.Subnet]*keyInfo)
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k.subnetBuffer = make(map[address.Subnet]*buffer)
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}
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func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
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k.mutex.Lock()
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if info := k.addrToInfo[addr]; info != nil {
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k.resetTimeout(info)
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k.mutex.Unlock()
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_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
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} else {
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var buf *buffer
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if buf = k.addrBuffer[addr]; buf == nil {
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buf = new(buffer)
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k.addrBuffer[addr] = buf
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}
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msg := append([]byte(nil), bs...)
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buf.packets = append(buf.packets, msg)
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if buf.timeout != nil {
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buf.timeout.Stop()
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}
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buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nbuf := k.addrBuffer[addr]; nbuf == buf {
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delete(k.addrBuffer, addr)
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}
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})
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k.mutex.Unlock()
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k.sendKeyLookup(addr.GetKey())
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}
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}
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func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
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k.mutex.Lock()
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if info := k.subnetToInfo[subnet]; info != nil {
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k.resetTimeout(info)
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k.mutex.Unlock()
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_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
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} else {
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var buf *buffer
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if buf = k.subnetBuffer[subnet]; buf == nil {
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buf = new(buffer)
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k.subnetBuffer[subnet] = buf
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}
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msg := append([]byte(nil), bs...)
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buf.packets = append(buf.packets, msg)
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if buf.timeout != nil {
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buf.timeout.Stop()
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}
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buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nbuf := k.subnetBuffer[subnet]; nbuf == buf {
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delete(k.subnetBuffer, subnet)
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}
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})
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k.mutex.Unlock()
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k.sendKeyLookup(subnet.GetKey())
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}
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}
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func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
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k.mutex.Lock()
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var kArray keyArray
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copy(kArray[:], key)
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var info *keyInfo
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if info = k.keyToInfo[kArray]; info == nil {
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info = new(keyInfo)
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info.key = kArray
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info.address = *address.AddrForKey(ed25519.PublicKey(info.key[:]))
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info.subnet = *address.SubnetForKey(ed25519.PublicKey(info.key[:]))
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k.keyToInfo[info.key] = info
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k.addrToInfo[info.address] = info
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k.subnetToInfo[info.subnet] = info
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k.resetTimeout(info)
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k.mutex.Unlock()
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if buf := k.addrBuffer[info.address]; buf != nil {
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for _, bs := range buf.packets {
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_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
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}
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delete(k.addrBuffer, info.address)
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}
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if buf := k.subnetBuffer[info.subnet]; buf != nil {
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for _, bs := range buf.packets {
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_, _ = k.core.pc.WriteTo(bs, iwt.Addr(info.key[:]))
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}
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delete(k.subnetBuffer, info.subnet)
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}
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} else {
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k.resetTimeout(info)
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k.mutex.Unlock()
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}
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return info
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}
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func (k *keyStore) resetTimeout(info *keyInfo) {
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if info.timeout != nil {
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info.timeout.Stop()
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}
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info.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nfo := k.keyToInfo[info.key]; nfo == info {
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delete(k.keyToInfo, info.key)
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}
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if nfo := k.addrToInfo[info.address]; nfo == info {
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delete(k.addrToInfo, info.address)
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}
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if nfo := k.subnetToInfo[info.subnet]; nfo == info {
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delete(k.subnetToInfo, info.subnet)
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}
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})
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}
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func (k *keyStore) oobHandler(fromKey, toKey ed25519.PublicKey, data []byte) {
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if len(data) != 1+ed25519.SignatureSize {
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return
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}
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sig := data[1:]
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switch data[0] {
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case typeKeyLookup:
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snet := *address.SubnetForKey(toKey)
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if snet == k.subnet && ed25519.Verify(fromKey, toKey[:], sig) {
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// This is looking for at least our subnet (possibly our address)
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// Send a response
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k.sendKeyResponse(fromKey)
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}
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case typeKeyResponse:
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// TODO keep a list of something to match against...
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// Ignore the response if it doesn't match anything of interest...
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if ed25519.Verify(fromKey, toKey[:], sig) {
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k.update(fromKey)
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}
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}
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}
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func (k *keyStore) sendKeyLookup(partial ed25519.PublicKey) {
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sig := ed25519.Sign(k.core.secret, partial[:])
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bs := append([]byte{typeKeyLookup}, sig...)
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_ = k.core.pc.SendOutOfBand(partial, bs)
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}
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func (k *keyStore) sendKeyResponse(dest ed25519.PublicKey) {
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sig := ed25519.Sign(k.core.secret, dest[:])
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bs := append([]byte{typeKeyResponse}, sig...)
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_ = k.core.pc.SendOutOfBand(dest, bs)
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}
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func (k *keyStore) maxSessionMTU() uint64 {
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const sessionTypeOverhead = 1
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return k.core.pc.MTU() - sessionTypeOverhead
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}
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func (k *keyStore) readPC(p []byte) (int, error) {
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for {
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bs := p
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n, from, err := k.core.pc.ReadFrom(bs)
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if err != nil {
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return n, err
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}
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if n == 0 {
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continue
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}
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switch bs[0] {
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case typeSessionTraffic:
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// This is what we want to handle here
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case typeSessionProto:
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var key keyArray
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copy(key[:], from.(iwt.Addr))
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data := append([]byte(nil), bs[1:n]...)
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k.core.proto.handleProto(nil, key, data)
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continue
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default:
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continue
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}
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bs = bs[1:n]
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if len(bs) == 0 {
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continue
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}
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if bs[0]&0xf0 != 0x60 {
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continue // not IPv6
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}
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if len(bs) < 40 {
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continue
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}
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/* TODO ICMP packet too big
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if len(bs) > int(tun.MTU()) {
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ptb := &icmp.PacketTooBig{
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MTU: int(tun.mtu),
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Data: bs[:40],
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}
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if packet, err := CreateICMPv6(bs[8:24], bs[24:40], ipv6.ICMPTypePacketTooBig, 0, ptb); err == nil {
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_, _ = tun.core.WriteTo(packet, from)
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}
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continue
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}
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*/
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var srcAddr, dstAddr address.Address
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var srcSubnet, dstSubnet address.Subnet
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copy(srcAddr[:], bs[8:])
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copy(dstAddr[:], bs[24:])
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copy(srcSubnet[:], bs[8:])
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copy(dstSubnet[:], bs[24:])
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if dstAddr != k.address && dstSubnet != k.subnet {
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continue // bad local address/subnet
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}
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info := k.update(ed25519.PublicKey(from.(iwt.Addr)))
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if srcAddr != info.address && srcSubnet != info.subnet {
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continue // bad remote address/subnet
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}
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n = copy(p, bs)
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return n, nil
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}
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}
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func (k *keyStore) writePC(bs []byte) (int, error) {
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if bs[0]&0xf0 != 0x60 {
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return 0, errors.New("not an IPv6 packet") // not IPv6
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}
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if len(bs) < 40 {
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strErr := fmt.Sprint("undersized IPv6 packet, length:", len(bs))
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return 0, errors.New(strErr)
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}
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var srcAddr, dstAddr address.Address
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var srcSubnet, dstSubnet address.Subnet
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copy(srcAddr[:], bs[8:])
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copy(dstAddr[:], bs[24:])
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copy(srcSubnet[:], bs[8:])
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copy(dstSubnet[:], bs[24:])
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if srcAddr != k.address && srcSubnet != k.subnet {
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return 0, errors.New("wrong source address")
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}
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k.buf = append(k.buf[:0], typeSessionTraffic)
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k.buf = append(k.buf, bs...)
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if dstAddr.IsValid() {
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k.sendToAddress(dstAddr, k.buf)
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} else if dstSubnet.IsValid() {
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k.sendToSubnet(dstSubnet, k.buf)
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} else {
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return 0, errors.New("invalid destination address")
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}
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return len(bs), nil
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}
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@ -20,8 +20,6 @@ import (
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//"github.com/Arceliar/phony" // TODO? use instead of mutexes
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)
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type keyArray [ed25519.PublicKeySize]byte
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type links struct {
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core *Core
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mutex sync.RWMutex // protects links below
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@ -231,7 +229,7 @@ func (intf *link) handler() (chan struct{}, error) {
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intf.links.core.log.Infof("Connected %s: %s, source %s",
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strings.ToUpper(intf.info.linkType), themString, intf.info.local)
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// Run the handler
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err = intf.links.core.PacketConn.HandleConn(ed25519.PublicKey(intf.info.key[:]), intf.conn)
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err = intf.links.core.pc.HandleConn(ed25519.PublicKey(intf.info.key[:]), intf.conn)
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// TODO don't report an error if it's just a 'use of closed network connection'
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if err != nil {
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intf.links.core.log.Infof("Disconnected %s: %s, source %s; error: %s",
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@ -1,4 +1,4 @@
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package tuntap
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package core
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import (
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"encoding/hex"
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@ -129,7 +129,7 @@ func (m *nodeinfo) _sendReq(key keyArray, callback func(nodeinfo NodeInfoPayload
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if callback != nil {
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m._addCallback(key, callback)
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}
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_, _ = m.proto.tun.core.WriteTo([]byte{typeSessionProto, typeProtoNodeInfoRequest}, iwt.Addr(key[:]))
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_, _ = m.proto.core.pc.WriteTo([]byte{typeSessionProto, typeProtoNodeInfoRequest}, iwt.Addr(key[:]))
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}
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func (m *nodeinfo) handleReq(from phony.Actor, key keyArray) {
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@ -146,7 +146,7 @@ func (m *nodeinfo) handleRes(from phony.Actor, key keyArray, info NodeInfoPayloa
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func (m *nodeinfo) _sendRes(key keyArray) {
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bs := append([]byte{typeSessionProto, typeProtoNodeInfoResponse}, m._getNodeInfo()...)
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_, _ = m.proto.tun.core.WriteTo(bs, iwt.Addr(key[:]))
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_, _ = m.proto.core.pc.WriteTo(bs, iwt.Addr(key[:]))
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}
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// Admin socket stuff
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@ -1,4 +1,4 @@
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package tuntap
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package core
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import (
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"encoding/hex"
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@ -31,15 +31,15 @@ type reqInfo struct {
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type protoHandler struct {
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phony.Inbox
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tun *TunAdapter
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core *Core
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nodeinfo nodeinfo
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sreqs map[keyArray]*reqInfo
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preqs map[keyArray]*reqInfo
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dreqs map[keyArray]*reqInfo
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}
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func (p *protoHandler) init(tun *TunAdapter) {
|
||||
p.tun = tun
|
||||
func (p *protoHandler) init(core *Core) {
|
||||
p.core = core
|
||||
p.nodeinfo.init(p)
|
||||
p.sreqs = make(map[keyArray]*reqInfo)
|
||||
p.preqs = make(map[keyArray]*reqInfo)
|
||||
@ -103,7 +103,7 @@ func (p *protoHandler) sendGetSelfRequest(key keyArray, callback func([]byte)) {
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetSelfRequest(key keyArray) {
|
||||
self := p.tun.core.GetSelf()
|
||||
self := p.core.GetSelf()
|
||||
res := map[string]string{
|
||||
"key": hex.EncodeToString(self.Key[:]),
|
||||
"coords": fmt.Sprintf("%v", self.Coords),
|
||||
@ -144,12 +144,12 @@ func (p *protoHandler) sendGetPeersRequest(key keyArray, callback func([]byte))
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetPeersRequest(key keyArray) {
|
||||
peers := p.tun.core.GetPeers()
|
||||
peers := p.core.GetPeers()
|
||||
var bs []byte
|
||||
for _, pinfo := range peers {
|
||||
tmp := append(bs, pinfo.Key[:]...)
|
||||
const responseOverhead = 2 // 1 debug type, 1 getpeers type
|
||||
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
|
||||
if uint64(len(tmp))+responseOverhead > p.core.store.maxSessionMTU() {
|
||||
break
|
||||
}
|
||||
bs = tmp
|
||||
@ -186,12 +186,12 @@ func (p *protoHandler) sendGetDHTRequest(key keyArray, callback func([]byte)) {
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetDHTRequest(key keyArray) {
|
||||
dinfos := p.tun.core.GetDHT()
|
||||
dinfos := p.core.GetDHT()
|
||||
var bs []byte
|
||||
for _, dinfo := range dinfos {
|
||||
tmp := append(bs, dinfo.Key[:]...)
|
||||
const responseOverhead = 2 // 1 debug type, 1 getdht type
|
||||
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
|
||||
if uint64(len(tmp))+responseOverhead > p.core.store.maxSessionMTU() {
|
||||
break
|
||||
}
|
||||
bs = tmp
|
||||
@ -209,7 +209,7 @@ func (p *protoHandler) _handleGetDHTResponse(key keyArray, bs []byte) {
|
||||
|
||||
func (p *protoHandler) _sendDebug(key keyArray, dType uint8, data []byte) {
|
||||
bs := append([]byte{typeSessionProto, typeProtoDebug, dType}, data...)
|
||||
_, _ = p.tun.core.WriteTo(bs, iwt.Addr(key[:]))
|
||||
_, _ = p.core.pc.WriteTo(bs, iwt.Addr(key[:]))
|
||||
}
|
||||
|
||||
// Admin socket stuff
|
||||
@ -1,4 +1,4 @@
|
||||
package tuntap
|
||||
package core
|
||||
|
||||
// Out-of-band packet types
|
||||
const (
|
||||
@ -1,157 +0,0 @@
|
||||
package tuntap
|
||||
|
||||
import (
|
||||
"crypto/ed25519"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
iwt "github.com/Arceliar/ironwood/types"
|
||||
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/address"
|
||||
)
|
||||
|
||||
const keyStoreTimeout = 2 * time.Minute
|
||||
|
||||
type keyStore struct {
|
||||
tun *TunAdapter
|
||||
mutex sync.Mutex
|
||||
keyToInfo map[keyArray]*keyInfo
|
||||
addrToInfo map[address.Address]*keyInfo
|
||||
addrBuffer map[address.Address]*buffer
|
||||
subnetToInfo map[address.Subnet]*keyInfo
|
||||
subnetBuffer map[address.Subnet]*buffer
|
||||
}
|
||||
|
||||
type keyArray [ed25519.PublicKeySize]byte
|
||||
|
||||
type keyInfo struct {
|
||||
key keyArray
|
||||
address address.Address
|
||||
subnet address.Subnet
|
||||
timeout *time.Timer // From calling a time.AfterFunc to do cleanup
|
||||
}
|
||||
|
||||
type buffer struct {
|
||||
packets [][]byte
|
||||
timeout *time.Timer
|
||||
}
|
||||
|
||||
func (k *keyStore) init(tun *TunAdapter) {
|
||||
k.tun = tun
|
||||
k.keyToInfo = make(map[keyArray]*keyInfo)
|
||||
k.addrToInfo = make(map[address.Address]*keyInfo)
|
||||
k.addrBuffer = make(map[address.Address]*buffer)
|
||||
k.subnetToInfo = make(map[address.Subnet]*keyInfo)
|
||||
k.subnetBuffer = make(map[address.Subnet]*buffer)
|
||||
}
|
||||
|
||||
func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
|
||||
k.mutex.Lock()
|
||||
if info := k.addrToInfo[addr]; info != nil {
|
||||
k.resetTimeout(info)
|
||||
k.mutex.Unlock()
|
||||
_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
} else {
|
||||
var buf *buffer
|
||||
if buf = k.addrBuffer[addr]; buf == nil {
|
||||
buf = new(buffer)
|
||||
k.addrBuffer[addr] = buf
|
||||
}
|
||||
msg := append([]byte(nil), bs...)
|
||||
buf.packets = append(buf.packets, msg)
|
||||
if buf.timeout != nil {
|
||||
buf.timeout.Stop()
|
||||
}
|
||||
buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nbuf := k.addrBuffer[addr]; nbuf == buf {
|
||||
delete(k.addrBuffer, addr)
|
||||
}
|
||||
})
|
||||
k.mutex.Unlock()
|
||||
k.tun.sendKeyLookup(addr.GetKey())
|
||||
}
|
||||
}
|
||||
|
||||
func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
|
||||
k.mutex.Lock()
|
||||
if info := k.subnetToInfo[subnet]; info != nil {
|
||||
k.resetTimeout(info)
|
||||
k.mutex.Unlock()
|
||||
_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
} else {
|
||||
var buf *buffer
|
||||
if buf = k.subnetBuffer[subnet]; buf == nil {
|
||||
buf = new(buffer)
|
||||
k.subnetBuffer[subnet] = buf
|
||||
}
|
||||
msg := append([]byte(nil), bs...)
|
||||
buf.packets = append(buf.packets, msg)
|
||||
if buf.timeout != nil {
|
||||
buf.timeout.Stop()
|
||||
}
|
||||
buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nbuf := k.subnetBuffer[subnet]; nbuf == buf {
|
||||
delete(k.subnetBuffer, subnet)
|
||||
}
|
||||
})
|
||||
k.mutex.Unlock()
|
||||
k.tun.sendKeyLookup(subnet.GetKey())
|
||||
}
|
||||
}
|
||||
|
||||
func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
|
||||
k.mutex.Lock()
|
||||
var kArray keyArray
|
||||
copy(kArray[:], key)
|
||||
var info *keyInfo
|
||||
if info = k.keyToInfo[kArray]; info == nil {
|
||||
info = new(keyInfo)
|
||||
info.key = kArray
|
||||
info.address = *address.AddrForKey(ed25519.PublicKey(info.key[:]))
|
||||
info.subnet = *address.SubnetForKey(ed25519.PublicKey(info.key[:]))
|
||||
k.keyToInfo[info.key] = info
|
||||
k.addrToInfo[info.address] = info
|
||||
k.subnetToInfo[info.subnet] = info
|
||||
k.resetTimeout(info)
|
||||
k.mutex.Unlock()
|
||||
if buf := k.addrBuffer[info.address]; buf != nil {
|
||||
for _, bs := range buf.packets {
|
||||
_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
}
|
||||
delete(k.addrBuffer, info.address)
|
||||
}
|
||||
if buf := k.subnetBuffer[info.subnet]; buf != nil {
|
||||
for _, bs := range buf.packets {
|
||||
_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
}
|
||||
delete(k.subnetBuffer, info.subnet)
|
||||
}
|
||||
} else {
|
||||
k.resetTimeout(info)
|
||||
k.mutex.Unlock()
|
||||
}
|
||||
return info
|
||||
}
|
||||
|
||||
func (k *keyStore) resetTimeout(info *keyInfo) {
|
||||
if info.timeout != nil {
|
||||
info.timeout.Stop()
|
||||
}
|
||||
info.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nfo := k.keyToInfo[info.key]; nfo == info {
|
||||
delete(k.keyToInfo, info.key)
|
||||
}
|
||||
if nfo := k.addrToInfo[info.address]; nfo == info {
|
||||
delete(k.addrToInfo, info.address)
|
||||
}
|
||||
if nfo := k.subnetToInfo[info.subnet]; nfo == info {
|
||||
delete(k.subnetToInfo, info.subnet)
|
||||
}
|
||||
})
|
||||
}
|
||||
@ -189,41 +189,3 @@ func (tun *TunAdapter) _stop() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) oobHandler(fromKey, toKey ed25519.PublicKey, data []byte) {
|
||||
if len(data) != 1+ed25519.SignatureSize {
|
||||
return
|
||||
}
|
||||
sig := data[1:]
|
||||
switch data[0] {
|
||||
case typeKeyLookup:
|
||||
snet := *address.SubnetForKey(toKey)
|
||||
if snet == tun.subnet && ed25519.Verify(fromKey, toKey[:], sig) {
|
||||
// This is looking for at least our subnet (possibly our address)
|
||||
// Send a response
|
||||
tun.sendKeyResponse(fromKey)
|
||||
}
|
||||
case typeKeyResponse:
|
||||
// TODO keep a list of something to match against...
|
||||
// Ignore the response if it doesn't match anything of interest...
|
||||
if ed25519.Verify(fromKey, toKey[:], sig) {
|
||||
tun.store.update(fromKey)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyLookup(partial ed25519.PublicKey) {
|
||||
sig := ed25519.Sign(tun.core.PrivateKey(), partial[:])
|
||||
bs := append([]byte{typeKeyLookup}, sig...)
|
||||
_ = tun.core.SendOutOfBand(partial, bs)
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyResponse(dest ed25519.PublicKey) {
|
||||
sig := ed25519.Sign(tun.core.PrivateKey(), dest[:])
|
||||
bs := append([]byte{typeKeyResponse}, sig...)
|
||||
_ = tun.core.SendOutOfBand(dest, bs)
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) maxSessionMTU() uint64 {
|
||||
const sessionTypeOverhead = 1
|
||||
return tun.core.MTU() - sessionTypeOverhead
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user