dendrite/cmd/dendrite-demo-yggdrasil/yggconn/node.go

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// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package yggconn
import (
"context"
"crypto/ed25519"
"crypto/tls"
"encoding/hex"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net"
"os"
"strings"
"sync"
"time"
"github.com/lucas-clemente/quic-go"
"github.com/matrix-org/dendrite/cmd/dendrite-demo-yggdrasil/convert"
"github.com/matrix-org/gomatrixserverlib"
"go.uber.org/atomic"
yggdrasilconfig "github.com/yggdrasil-network/yggdrasil-go/src/config"
yggdrasilmulticast "github.com/yggdrasil-network/yggdrasil-go/src/multicast"
"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
gologme "github.com/gologme/log"
)
type Node struct {
core *yggdrasil.Core
config *yggdrasilconfig.NodeConfig
state *yggdrasilconfig.NodeState
multicast *yggdrasilmulticast.Multicast
log *gologme.Logger
listener quic.Listener
tlsConfig *tls.Config
quicConfig *quic.Config
sessions sync.Map // string -> *session
sessionCount atomic.Uint32
sessionFunc func(address string)
coords sync.Map // string -> yggdrasil.Coords
incoming chan QUICStream
NewSession func(remote gomatrixserverlib.ServerName)
}
func (n *Node) Dialer(_, address string) (net.Conn, error) {
tokens := strings.Split(address, ":")
raw, err := hex.DecodeString(tokens[0])
if err != nil {
return nil, fmt.Errorf("hex.DecodeString: %w", err)
}
converted := convert.Ed25519PublicKeyToCurve25519(ed25519.PublicKey(raw))
convhex := hex.EncodeToString(converted)
return n.Dial("curve25519", convhex)
}
func (n *Node) DialerContext(ctx context.Context, network, address string) (net.Conn, error) {
return n.Dialer(network, address)
}
func Setup(instanceName, storageDirectory string) (*Node, error) {
n := &Node{
core: &yggdrasil.Core{},
config: yggdrasilconfig.GenerateConfig(),
multicast: &yggdrasilmulticast.Multicast{},
log: gologme.New(os.Stdout, "YGG ", log.Flags()),
incoming: make(chan QUICStream),
}
yggfile := fmt.Sprintf("%s/%s-yggdrasil.conf", storageDirectory, instanceName)
if _, err := os.Stat(yggfile); !os.IsNotExist(err) {
yggconf, e := ioutil.ReadFile(yggfile)
if e != nil {
panic(err)
}
if err := json.Unmarshal([]byte(yggconf), &n.config); err != nil {
panic(err)
}
}
n.core.SetCoordChangeCallback(func(old, new yggdrasil.Coords) {
fmt.Println("COORDINATE CHANGE!")
fmt.Println("Old:", old)
fmt.Println("New:", new)
n.sessions.Range(func(k, v interface{}) bool {
if s, ok := v.(*session); ok {
fmt.Println("Killing session", k)
s.kill()
}
return true
})
})
n.config.Peers = []string{}
n.config.AdminListen = "none"
n.config.MulticastInterfaces = []string{}
n.config.EncryptionPrivateKey = hex.EncodeToString(n.EncryptionPrivateKey())
n.config.EncryptionPublicKey = hex.EncodeToString(n.EncryptionPublicKey())
j, err := json.MarshalIndent(n.config, "", " ")
if err != nil {
panic(err)
}
if e := ioutil.WriteFile(yggfile, j, 0600); e != nil {
n.log.Printf("Couldn't write private key to file '%s': %s\n", yggfile, e)
}
n.log.EnableLevel("error")
n.log.EnableLevel("warn")
n.log.EnableLevel("info")
n.state, err = n.core.Start(n.config, n.log)
if err != nil {
panic(err)
}
if err = n.multicast.Init(n.core, n.state, n.log, nil); err != nil {
panic(err)
}
if err = n.multicast.Start(); err != nil {
panic(err)
}
n.tlsConfig = n.generateTLSConfig()
n.quicConfig = &quic.Config{
MaxIncomingStreams: 0,
MaxIncomingUniStreams: 0,
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KeepAlive: true,
MaxIdleTimeout: time.Minute * 30,
HandshakeTimeout: time.Second * 15,
}
copy(n.quicConfig.StatelessResetKey, n.EncryptionPublicKey())
n.log.Println("Public curve25519:", n.core.EncryptionPublicKey())
n.log.Println("Public ed25519:", n.core.SigningPublicKey())
go func() {
time.Sleep(time.Second)
n.listenFromYgg()
}()
return n, nil
}
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func (n *Node) Stop() {
if err := n.multicast.Stop(); err != nil {
n.log.Println("Error stopping multicast:", err)
}
n.core.Stop()
}
func (n *Node) DerivedServerName() string {
return hex.EncodeToString(n.SigningPublicKey())
}
func (n *Node) DerivedSessionName() string {
return hex.EncodeToString(n.EncryptionPublicKey())
}
func (n *Node) EncryptionPublicKey() []byte {
edkey := n.SigningPublicKey()
return convert.Ed25519PublicKeyToCurve25519(edkey)
}
func (n *Node) EncryptionPrivateKey() []byte {
edkey := n.SigningPrivateKey()
return convert.Ed25519PrivateKeyToCurve25519(edkey)
}
func (n *Node) SigningPublicKey() ed25519.PublicKey {
pubBytes, _ := hex.DecodeString(n.config.SigningPublicKey)
return ed25519.PublicKey(pubBytes)
}
func (n *Node) SigningPrivateKey() ed25519.PrivateKey {
privBytes, _ := hex.DecodeString(n.config.SigningPrivateKey)
return ed25519.PrivateKey(privBytes)
}
func (n *Node) SetSessionFunc(f func(address string)) {
n.sessionFunc = f
}
func (n *Node) PeerCount() int {
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return len(n.core.GetPeers()) - 1
}
func (n *Node) SessionCount() int {
return int(n.sessionCount.Load())
}
func (n *Node) KnownNodes() []gomatrixserverlib.ServerName {
Yggdrasil demo updates Squashed commit of the following: commit 6c2c48f862c1b6f8e741c57804282eceffe02487 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 16:28:09 2020 +0100 Add README.md commit 5eeefdadf8e3881dd7a32559a92be49bd7ddaf47 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 10:18:50 2020 +0100 Fix wedge in federation sender commit e2ebffbfba25cf82378393940a613ec32bfb909f Merge: 0883ef88 abf26c12 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 09:51:23 2020 +0100 Merge branch 'master' into neilalexander/yggdrasil commit 0883ef8870e340f2ae9a0c37ed939dc2ab9911f6 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 09:51:06 2020 +0100 Adjust timeouts commit ba2d53199910f13b60cc892debe96a962e8c9acb Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 16:34:40 2020 +0100 Try to wake up from peers/sessions properly commit 73f42eb494741ba5b0e0cef43654708e3c8eb399 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 15:43:38 2020 +0100 Use TransactionWriter to reduce database lock issues on SQLite commit 08bfe63241a18c58c539c91b9f52edccda63a611 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:38:02 2020 +0100 Un-wedge federation Squashed commit of the following: commit aee933f8785e7a7998105f6090f514d18051a1bd Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:22:41 2020 +0100 Un-goroutine the goroutines commit 478374e5d18a3056cac6682ef9095d41352d1295 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:09:31 2020 +0100 Reduce federation sender wedges commit 40cc62c54d9e3a863868214c48b7c18e522a4772 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 10:02:52 2020 +0100 Handle switching in/out background more reliably
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nodemap := map[string]struct{}{
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//"b5ae50589e50991dd9dd7d59c5c5f7a4521e8da5b603b7f57076272abc58b374": {},
}
for _, peer := range n.core.GetSwitchPeers() {
nodemap[hex.EncodeToString(peer.SigPublicKey[:])] = struct{}{}
Yggdrasil demo updates Squashed commit of the following: commit 6c2c48f862c1b6f8e741c57804282eceffe02487 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 16:28:09 2020 +0100 Add README.md commit 5eeefdadf8e3881dd7a32559a92be49bd7ddaf47 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 10:18:50 2020 +0100 Fix wedge in federation sender commit e2ebffbfba25cf82378393940a613ec32bfb909f Merge: 0883ef88 abf26c12 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 09:51:23 2020 +0100 Merge branch 'master' into neilalexander/yggdrasil commit 0883ef8870e340f2ae9a0c37ed939dc2ab9911f6 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Jul 10 09:51:06 2020 +0100 Adjust timeouts commit ba2d53199910f13b60cc892debe96a962e8c9acb Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 16:34:40 2020 +0100 Try to wake up from peers/sessions properly commit 73f42eb494741ba5b0e0cef43654708e3c8eb399 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 15:43:38 2020 +0100 Use TransactionWriter to reduce database lock issues on SQLite commit 08bfe63241a18c58c539c91b9f52edccda63a611 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:38:02 2020 +0100 Un-wedge federation Squashed commit of the following: commit aee933f8785e7a7998105f6090f514d18051a1bd Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:22:41 2020 +0100 Un-goroutine the goroutines commit 478374e5d18a3056cac6682ef9095d41352d1295 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 12:09:31 2020 +0100 Reduce federation sender wedges commit 40cc62c54d9e3a863868214c48b7c18e522a4772 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Thu Jul 9 10:02:52 2020 +0100 Handle switching in/out background more reliably
2020-07-10 15:28:18 +00:00
}
n.sessions.Range(func(_, v interface{}) bool {
session, ok := v.(quic.Session)
if !ok {
return true
}
if len(session.ConnectionState().PeerCertificates) != 1 {
return true
}
subjectName := session.ConnectionState().PeerCertificates[0].Subject.CommonName
nodemap[subjectName] = struct{}{}
return true
})
var nodes []gomatrixserverlib.ServerName
for node := range nodemap {
nodes = append(nodes, gomatrixserverlib.ServerName(node))
}
return nodes
}
func (n *Node) SetMulticastEnabled(enabled bool) {
if enabled {
n.config.MulticastInterfaces = []string{".*"}
} else {
n.config.MulticastInterfaces = []string{}
}
n.multicast.UpdateConfig(n.config)
if !enabled {
n.DisconnectMulticastPeers()
}
}
func (n *Node) DisconnectMulticastPeers() {
for _, sp := range n.core.GetSwitchPeers() {
if !strings.HasPrefix(sp.Endpoint, "fe80") {
continue
}
if err := n.core.DisconnectPeer(sp.Port); err != nil {
n.log.Printf("Failed to disconnect port %d: %s", sp.Port, err)
}
}
}
func (n *Node) DisconnectNonMulticastPeers() {
for _, sp := range n.core.GetSwitchPeers() {
if strings.HasPrefix(sp.Endpoint, "fe80") {
continue
}
if err := n.core.DisconnectPeer(sp.Port); err != nil {
n.log.Printf("Failed to disconnect port %d: %s", sp.Port, err)
}
}
}
func (n *Node) SetStaticPeer(uri string) error {
n.config.Peers = []string{}
n.core.UpdateConfig(n.config)
n.DisconnectNonMulticastPeers()
if uri != "" {
n.log.Infoln("Adding static peer", uri)
if err := n.core.AddPeer(uri, ""); err != nil {
n.log.Warnln("Adding static peer failed:", err)
return err
}
if err := n.core.CallPeer(uri, ""); err != nil {
n.log.Warnln("Calling static peer failed:", err)
return err
}
}
return nil
}