mirror of
https://github.com/matrix-org/dendrite
synced 2024-11-09 11:21:08 +01:00
270 lines
7.1 KiB
Go
270 lines
7.1 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package yggconn
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import (
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"context"
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"crypto/ed25519"
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"crypto/tls"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"os"
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"strings"
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"sync"
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"time"
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"github.com/lucas-clemente/quic-go"
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"github.com/matrix-org/dendrite/cmd/dendrite-demo-yggdrasil/convert"
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"github.com/matrix-org/gomatrixserverlib"
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yggdrasiladmin "github.com/yggdrasil-network/yggdrasil-go/src/admin"
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yggdrasilconfig "github.com/yggdrasil-network/yggdrasil-go/src/config"
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yggdrasilmulticast "github.com/yggdrasil-network/yggdrasil-go/src/multicast"
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"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
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gologme "github.com/gologme/log"
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)
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type Node struct {
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core *yggdrasil.Core
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config *yggdrasilconfig.NodeConfig
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state *yggdrasilconfig.NodeState
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admin *yggdrasiladmin.AdminSocket
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multicast *yggdrasilmulticast.Multicast
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log *gologme.Logger
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packetConn *yggdrasil.PacketConn
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listener quic.Listener
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tlsConfig *tls.Config
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quicConfig *quic.Config
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sessions sync.Map // string -> quic.Session
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incoming chan QUICStream
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}
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func (n *Node) BuildName() string {
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return "dendrite"
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}
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func (n *Node) BuildVersion() string {
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return "dev"
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}
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func (n *Node) Dialer(_, address string) (net.Conn, error) {
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tokens := strings.Split(address, ":")
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raw, err := hex.DecodeString(tokens[0])
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if err != nil {
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return nil, fmt.Errorf("hex.DecodeString: %w", err)
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}
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converted := convert.Ed25519PublicKeyToCurve25519(ed25519.PublicKey(raw))
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convhex := hex.EncodeToString(converted)
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return n.Dial("curve25519", convhex)
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}
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func (n *Node) DialerContext(ctx context.Context, network, address string) (net.Conn, error) {
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return n.Dialer(network, address)
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}
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// nolint:gocyclo
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func Setup(instanceName, instancePeer, storageDirectory string, enableMulticast bool) (*Node, error) {
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n := &Node{
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core: &yggdrasil.Core{},
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config: yggdrasilconfig.GenerateConfig(),
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admin: &yggdrasiladmin.AdminSocket{},
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multicast: &yggdrasilmulticast.Multicast{},
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log: gologme.New(os.Stdout, "YGG ", log.Flags()),
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incoming: make(chan QUICStream),
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}
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n.core.SetBuildInfo(n)
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yggfile := fmt.Sprintf("%s/%s-yggdrasil.conf", storageDirectory, instanceName)
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if _, err := os.Stat(yggfile); !os.IsNotExist(err) {
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yggconf, e := ioutil.ReadFile(yggfile)
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if e != nil {
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panic(err)
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}
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if err := json.Unmarshal([]byte(yggconf), &n.config); err != nil {
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panic(err)
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}
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}
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if instancePeer != "" {
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n.config.Peers = []string{instancePeer}
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} else {
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n.config.Peers = []string{}
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}
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n.config.AdminListen = "none"
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if enableMulticast {
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n.config.MulticastInterfaces = []string{".*"}
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} else {
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n.config.MulticastInterfaces = []string{}
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}
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n.config.EncryptionPrivateKey = hex.EncodeToString(n.EncryptionPrivateKey())
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n.config.EncryptionPublicKey = hex.EncodeToString(n.EncryptionPublicKey())
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j, err := json.MarshalIndent(n.config, "", " ")
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if err != nil {
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panic(err)
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}
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if e := ioutil.WriteFile(yggfile, j, 0600); e != nil {
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n.log.Printf("Couldn't write private key to file '%s': %s\n", yggfile, e)
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}
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n.log.EnableLevel("error")
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n.log.EnableLevel("warn")
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n.log.EnableLevel("info")
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n.state, err = n.core.Start(n.config, n.log)
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if err != nil {
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panic(err)
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}
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if err = n.multicast.Init(n.core, n.state, n.log, nil); err != nil {
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panic(err)
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}
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if err = n.multicast.Start(); err != nil {
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panic(err)
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}
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n.packetConn = n.core.PacketConn()
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n.tlsConfig = n.generateTLSConfig()
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n.quicConfig = &quic.Config{
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MaxIncomingStreams: 0,
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MaxIncomingUniStreams: 0,
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KeepAlive: true,
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MaxIdleTimeout: time.Second * 900,
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HandshakeTimeout: time.Second * 30,
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}
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n.log.Println("Public curve25519:", n.core.EncryptionPublicKey())
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n.log.Println("Public ed25519:", n.core.SigningPublicKey())
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go n.listenFromYgg()
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return n, nil
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}
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func (n *Node) Stop() {
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if err := n.multicast.Stop(); err != nil {
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n.log.Println("Error stopping multicast:", err)
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}
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n.core.Stop()
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}
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func (n *Node) DerivedServerName() string {
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return hex.EncodeToString(n.SigningPublicKey())
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}
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func (n *Node) DerivedSessionName() string {
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return hex.EncodeToString(n.EncryptionPublicKey())
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}
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func (n *Node) EncryptionPublicKey() []byte {
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edkey := n.SigningPublicKey()
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return convert.Ed25519PublicKeyToCurve25519(edkey)
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}
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func (n *Node) EncryptionPrivateKey() []byte {
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edkey := n.SigningPrivateKey()
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return convert.Ed25519PrivateKeyToCurve25519(edkey)
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}
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func (n *Node) SigningPublicKey() ed25519.PublicKey {
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pubBytes, _ := hex.DecodeString(n.config.SigningPublicKey)
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return ed25519.PublicKey(pubBytes)
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}
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func (n *Node) SigningPrivateKey() ed25519.PrivateKey {
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privBytes, _ := hex.DecodeString(n.config.SigningPrivateKey)
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return ed25519.PrivateKey(privBytes)
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}
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func (n *Node) PeerCount() int {
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return len(n.core.GetPeers()) - 1
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}
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func (n *Node) KnownNodes() []gomatrixserverlib.ServerName {
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nodemap := map[string]struct{}{}
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/*
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for _, peer := range n.core.GetSwitchPeers() {
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nodemap[hex.EncodeToString(peer.SigningKey[:])] = struct{}{}
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}
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*/
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n.sessions.Range(func(_, v interface{}) bool {
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session, ok := v.(quic.Session)
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if !ok {
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return true
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}
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if len(session.ConnectionState().PeerCertificates) != 1 {
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return true
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}
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subjectName := session.ConnectionState().PeerCertificates[0].Subject.CommonName
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nodemap[subjectName] = struct{}{}
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return true
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})
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var nodes []gomatrixserverlib.ServerName
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for node := range nodemap {
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nodes = append(nodes, gomatrixserverlib.ServerName(node))
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}
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return nodes
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}
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func (n *Node) SetMulticastEnabled(enabled bool) {
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if enabled {
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n.config.MulticastInterfaces = []string{".*"}
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} else {
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n.config.MulticastInterfaces = []string{}
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}
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n.multicast.UpdateConfig(n.config)
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if !enabled {
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n.DisconnectMulticastPeers()
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}
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}
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func (n *Node) DisconnectMulticastPeers() {
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for _, sp := range n.core.GetSwitchPeers() {
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if !strings.HasPrefix(sp.Endpoint, "fe80") {
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continue
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}
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if err := n.core.DisconnectPeer(sp.Port); err != nil {
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n.log.Printf("Failed to disconnect port %d: %s", sp.Port, err)
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}
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}
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}
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func (n *Node) DisconnectNonMulticastPeers() {
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for _, sp := range n.core.GetSwitchPeers() {
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if strings.HasPrefix(sp.Endpoint, "fe80") {
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continue
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}
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if err := n.core.DisconnectPeer(sp.Port); err != nil {
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n.log.Printf("Failed to disconnect port %d: %s", sp.Port, err)
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}
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}
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}
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func (n *Node) SetStaticPeer(uri string) error {
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n.config.Peers = []string{}
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n.core.UpdateConfig(n.config)
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n.DisconnectNonMulticastPeers()
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if uri != "" {
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n.log.Infoln("Adding static peer", uri)
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if err := n.core.AddPeer(uri, ""); err != nil {
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n.log.Infoln("Adding static peer failed:", err)
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return err
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}
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}
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return nil
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}
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