mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-11-08 19:20:29 +00:00
Refactor multicast setup (isolated config, etc)
This commit is contained in:
parent
dad0b10dfe
commit
493208fb37
@ -12,6 +12,7 @@ import (
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"net"
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"os"
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"os/signal"
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"regexp"
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"strings"
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"syscall"
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@ -325,40 +326,59 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
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default:
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}
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// Setup the Yggdrasil node itself. The node{} type includes a Core, so we
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// don't need to create this manually.
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sk, err := hex.DecodeString(cfg.PrivateKey)
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if err != nil {
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panic(err)
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}
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options := []core.SetupOption{
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core.IfName(cfg.IfName),
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core.IfMTU(cfg.IfMTU),
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}
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for _, peer := range cfg.Peers {
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options = append(options, core.Peer{URI: peer})
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}
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for intf, peers := range cfg.InterfacePeers {
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for _, peer := range peers {
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options = append(options, core.Peer{URI: peer, SourceInterface: intf})
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}
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}
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for _, allowed := range cfg.AllowedPublicKeys {
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k, err := hex.DecodeString(allowed)
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n := &node{config: cfg}
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// Setup the Yggdrasil node itself.
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{
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sk, err := hex.DecodeString(cfg.PrivateKey)
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if err != nil {
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panic(err)
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}
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options := []core.SetupOption{
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core.IfName(cfg.IfName),
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core.IfMTU(cfg.IfMTU),
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}
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for _, peer := range cfg.Peers {
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options = append(options, core.Peer{URI: peer})
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}
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for intf, peers := range cfg.InterfacePeers {
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for _, peer := range peers {
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options = append(options, core.Peer{URI: peer, SourceInterface: intf})
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}
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}
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for _, allowed := range cfg.AllowedPublicKeys {
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k, err := hex.DecodeString(allowed)
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if err != nil {
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panic(err)
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}
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options = append(options, core.AllowedPublicKey(k[:]))
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}
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n.core, err = core.New(sk[:], logger, options...)
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if err != nil {
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panic(err)
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}
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options = append(options, core.AllowedPublicKey(k[:]))
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}
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n := node{config: cfg}
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n.core, err = core.New(sk[:], options...)
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if err != nil {
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panic(err)
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// Setup the multicast module.
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{
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options := []multicast.SetupOption{}
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for _, intf := range cfg.MulticastInterfaces {
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options = append(options, multicast.MulticastInterface{
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Regex: regexp.MustCompile(intf.Regex),
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Beacon: intf.Beacon,
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Listen: intf.Listen,
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Port: intf.Port,
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})
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}
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n.multicast, err = multicast.New(n.core, logger, options...)
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if err != nil {
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panic(err)
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}
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}
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// Register the session firewall gatekeeper function
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// Allocate our modules
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n.admin = &admin.AdminSocket{}
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n.multicast = &multicast.Multicast{}
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n.tuntap = &tuntap.TunAdapter{}
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// Start the admin socket
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if err := n.admin.Init(n.core, cfg, logger, nil); err != nil {
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@ -368,10 +388,8 @@ func run(args yggArgs, ctx context.Context, done chan struct{}) {
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}
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n.admin.SetupAdminHandlers()
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// Start the multicast interface
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if err := n.multicast.Init(n.core, cfg, logger, nil); err != nil {
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if n.multicast, err = multicast.New(n.core, logger, nil); err != nil {
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logger.Errorln("An error occurred initialising multicast:", err)
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} else if err := n.multicast.Start(); err != nil {
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logger.Errorln("An error occurred starting multicast:", err)
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}
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n.multicast.SetupAdminHandlers(n.admin)
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// Start the TUN/TAP interface
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@ -5,6 +5,7 @@ import (
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"encoding/json"
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"fmt"
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"net"
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"regexp"
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"github.com/gologme/log"
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@ -28,7 +29,7 @@ type Yggdrasil struct {
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core *core.Core
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iprwc *ipv6rwc.ReadWriteCloser
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config *config.NodeConfig
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multicast multicast.Multicast
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multicast *multicast.Multicast
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log MobileLogger
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}
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@ -49,46 +50,60 @@ func (m *Yggdrasil) StartJSON(configjson []byte) error {
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return err
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}
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// Setup the Yggdrasil node itself.
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sk, err := hex.DecodeString(m.config.PrivateKey)
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if err != nil {
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panic(err)
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}
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options := []core.SetupOption{
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core.IfName("none"),
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core.IfMTU(m.config.IfMTU),
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}
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for _, peer := range m.config.Peers {
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options = append(options, core.Peer{URI: peer})
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}
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for intf, peers := range m.config.InterfacePeers {
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for _, peer := range peers {
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options = append(options, core.Peer{URI: peer, SourceInterface: intf})
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}
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}
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for _, allowed := range m.config.AllowedPublicKeys {
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k, err := hex.DecodeString(allowed)
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{
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sk, err := hex.DecodeString(m.config.PrivateKey)
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if err != nil {
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panic(err)
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}
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options := []core.SetupOption{
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core.IfName("none"),
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core.IfMTU(m.config.IfMTU),
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}
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for _, peer := range m.config.Peers {
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options = append(options, core.Peer{URI: peer})
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}
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for intf, peers := range m.config.InterfacePeers {
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for _, peer := range peers {
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options = append(options, core.Peer{URI: peer, SourceInterface: intf})
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}
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}
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for _, allowed := range m.config.AllowedPublicKeys {
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k, err := hex.DecodeString(allowed)
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if err != nil {
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panic(err)
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}
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options = append(options, core.AllowedPublicKey(k[:]))
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}
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m.core, err = core.New(sk[:], logger, options...)
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if err != nil {
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panic(err)
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}
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options = append(options, core.AllowedPublicKey(k[:]))
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}
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m.core, err = core.New(sk[:], options...)
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if err != nil {
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panic(err)
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// Setup the multicast module.
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if len(m.config.MulticastInterfaces) > 0 {
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var err error
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options := []multicast.SetupOption{}
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for _, intf := range m.config.MulticastInterfaces {
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options = append(options, multicast.MulticastInterface{
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Regex: regexp.MustCompile(intf.Regex),
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Beacon: intf.Beacon,
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Listen: intf.Listen,
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Port: intf.Port,
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})
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}
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m.multicast, err = multicast.New(m.core, logger, options...)
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if err != nil {
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panic(err)
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}
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}
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mtu := m.config.IfMTU
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m.iprwc = ipv6rwc.NewReadWriteCloser(m.core)
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if m.iprwc.MaxMTU() < mtu {
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mtu = m.iprwc.MaxMTU()
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}
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m.iprwc.SetMTU(mtu)
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if len(m.config.MulticastInterfaces) > 0 {
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if err := m.multicast.Init(m.core, m.config, logger, nil); err != nil {
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logger.Errorln("An error occurred initialising multicast:", err)
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} else if err := m.multicast.Start(); err != nil {
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logger.Errorln("An error occurred starting multicast:", err)
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}
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}
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return nil
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}
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@ -15,8 +15,8 @@ import (
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//"sort"
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//"time"
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"github.com/gologme/log"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/util"
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//"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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//"github.com/Arceliar/phony"
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)
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@ -159,7 +159,7 @@ func (c *Core) Subnet() net.IPNet {
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// may be useful if you want to redirect the output later. Note that this
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// expects a Logger from the github.com/gologme/log package and not from Go's
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// built-in log package.
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func (c *Core) SetLogger(log *log.Logger) {
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func (c *Core) SetLogger(log util.Logger) {
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c.log = log
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}
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@ -239,8 +239,10 @@ func (c *Core) RemovePeer(addr string, sintf string) error {
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// CallPeer calls a peer once. This should be specified in the peer URI format,
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// e.g.:
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// tcp://a.b.c.d:e
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// socks://a.b.c.d:e/f.g.h.i:j
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//
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// tcp://a.b.c.d:e
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// socks://a.b.c.d:e/f.g.h.i:j
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//
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// This does not add the peer to the peer list, so if the connection drops, the
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// peer will not be called again automatically.
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func (c *Core) CallPeer(u *url.URL, sintf string) error {
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@ -7,7 +7,6 @@ import (
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"io"
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"net"
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"net/url"
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"os"
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"time"
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iwe "github.com/Arceliar/ironwood/encrypted"
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@ -15,6 +14,7 @@ import (
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"github.com/Arceliar/phony"
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"github.com/gologme/log"
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"github.com/yggdrasil-network/yggdrasil-go/src/util"
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"github.com/yggdrasil-network/yggdrasil-go/src/version"
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//"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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)
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@ -33,7 +33,7 @@ type Core struct {
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public ed25519.PublicKey
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links links
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proto protoHandler
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log *log.Logger
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log util.Logger
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addPeerTimer *time.Timer
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config struct {
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_peers map[Peer]struct{} // configurable after startup
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@ -46,14 +46,14 @@ type Core struct {
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}
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}
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func New(secret ed25519.PrivateKey, opts ...SetupOption) (*Core, error) {
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func New(secret ed25519.PrivateKey, logger util.Logger, opts ...SetupOption) (*Core, error) {
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if len(secret) != ed25519.PrivateKeySize {
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return nil, fmt.Errorf("private key is incorrect length")
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}
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c := &Core{
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secret: secret,
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public: secret.Public().(ed25519.PublicKey),
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log: log.New(os.Stdout, "", 0), // TODO: not this
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log: logger,
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}
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c.ctx, c.cancel = context.WithCancel(context.Background())
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var err error
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@ -36,10 +36,11 @@ func CreateAndConnectTwo(t testing.TB, verbose bool) (nodeA *Core, nodeB *Core)
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if _, skB, err = ed25519.GenerateKey(nil); err != nil {
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t.Fatal(err)
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}
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if nodeA, err = New(skA, ListenAddress("tcp://127.0.0.1:0"), IfName("none")); err != nil {
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logger := GetLoggerWithPrefix("", false)
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if nodeA, err = New(skA, logger, ListenAddress("tcp://127.0.0.1:0"), IfName("none")); err != nil {
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t.Fatal(err)
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}
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if nodeB, err = New(skB, ListenAddress("tcp://127.0.0.1:0"), IfName("none")); err != nil {
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if nodeB, err = New(skB, logger, ListenAddress("tcp://127.0.0.1:0"), IfName("none")); err != nil {
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t.Fatal(err)
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}
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@ -30,7 +30,6 @@ type SetupOption interface {
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}
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type ListenAddress string
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type AdminListenAddress string
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type Peer struct {
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URI string
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SourceInterface string
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@ -41,11 +40,10 @@ type IfName string
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type IfMTU uint16
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type AllowedPublicKey ed25519.PublicKey
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func (a ListenAddress) isSetupOption() {}
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func (a AdminListenAddress) isSetupOption() {}
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func (a Peer) isSetupOption() {}
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func (a NodeInfo) isSetupOption() {}
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func (a NodeInfoPrivacy) isSetupOption() {}
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func (a IfName) isSetupOption() {}
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func (a IfMTU) isSetupOption() {}
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func (a AllowedPublicKey) isSetupOption() {}
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func (a ListenAddress) isSetupOption() {}
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func (a Peer) isSetupOption() {}
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func (a NodeInfo) isSetupOption() {}
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func (a NodeInfoPrivacy) isSetupOption() {}
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func (a IfName) isSetupOption() {}
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func (a IfMTU) isSetupOption() {}
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func (a AllowedPublicKey) isSetupOption() {}
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@ -9,13 +9,11 @@ import (
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"fmt"
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"net"
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"net/url"
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"regexp"
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"time"
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"github.com/Arceliar/phony"
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"github.com/gologme/log"
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"github.com/yggdrasil-network/yggdrasil-go/src/config"
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"github.com/yggdrasil-network/yggdrasil-go/src/core"
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"golang.org/x/net/ipv6"
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)
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@ -27,13 +25,15 @@ import (
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type Multicast struct {
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phony.Inbox
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core *core.Core
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config *config.NodeConfig
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log *log.Logger
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sock *ipv6.PacketConn
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groupAddr string
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listeners map[string]*listenerInfo
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isOpen bool
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_interfaces map[string]interfaceInfo
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_isOpen bool
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_listeners map[string]*listenerInfo
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_interfaces map[string]*interfaceInfo
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config struct {
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_groupAddr GroupAddress
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_interfaces map[MulticastInterface]struct{}
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}
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}
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type interfaceInfo struct {
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@ -51,40 +51,38 @@ type listenerInfo struct {
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port uint16
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}
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// Init prepares the multicast interface for use.
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func (m *Multicast) Init(core *core.Core, nc *config.NodeConfig, log *log.Logger, options interface{}) error {
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m.core = core
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m.config = nc
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m.log = log
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m.listeners = make(map[string]*listenerInfo)
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m._interfaces = make(map[string]interfaceInfo)
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m.groupAddr = "[ff02::114]:9001"
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return nil
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}
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// Start starts the multicast interface. This launches goroutines which will
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// listen for multicast beacons from other hosts and will advertise multicast
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// beacons out to the network.
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func (m *Multicast) Start() error {
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func New(core *core.Core, log *log.Logger, opts ...SetupOption) (*Multicast, error) {
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m := &Multicast{
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core: core,
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log: log,
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_listeners: make(map[string]*listenerInfo),
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_interfaces: make(map[string]*interfaceInfo),
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}
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m.config._interfaces = map[MulticastInterface]struct{}{}
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m.config._groupAddr = GroupAddress("[ff02::114]:9001")
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for _, opt := range opts {
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m._applyOption(opt)
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}
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var err error
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phony.Block(m, func() {
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err = m._start()
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})
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m.log.Debugln("Started multicast module")
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return err
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return m, err
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}
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func (m *Multicast) _start() error {
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if m.isOpen {
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if m._isOpen {
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return fmt.Errorf("multicast module is already started")
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}
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m.config.RLock()
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defer m.config.RUnlock()
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if len(m.config.MulticastInterfaces) == 0 {
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if len(m.config._interfaces) == 0 {
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return nil
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}
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m.log.Infoln("Starting multicast module")
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addr, err := net.ResolveUDPAddr("udp", m.groupAddr)
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defer m.log.Infoln("Started multicast module")
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addr, err := net.ResolveUDPAddr("udp", string(m.config._groupAddr))
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if err != nil {
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return err
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}
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@ -101,7 +99,7 @@ func (m *Multicast) _start() error {
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// Windows can't set this flag, so we need to handle it in other ways
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}
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m.isOpen = true
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m._isOpen = true
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go m.listen()
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m.Act(nil, m._multicastStarted)
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m.Act(nil, m._announce)
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@ -113,7 +111,7 @@ func (m *Multicast) _start() error {
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func (m *Multicast) IsStarted() bool {
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var isOpen bool
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phony.Block(m, func() {
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isOpen = m.isOpen
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isOpen = m._isOpen
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})
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return isOpen
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}
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@ -130,7 +128,7 @@ func (m *Multicast) Stop() error {
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func (m *Multicast) _stop() error {
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m.log.Infoln("Stopping multicast module")
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m.isOpen = false
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m._isOpen = false
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if m.sock != nil {
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m.sock.Close()
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}
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@ -138,7 +136,7 @@ func (m *Multicast) _stop() error {
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}
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func (m *Multicast) _updateInterfaces() {
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interfaces := m.getAllowedInterfaces()
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interfaces := m._getAllowedInterfaces()
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for name, info := range interfaces {
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addrs, err := info.iface.Addrs()
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if err != nil {
|
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@ -163,10 +161,8 @@ func (m *Multicast) Interfaces() map[string]net.Interface {
|
||||
}
|
||||
|
||||
// getAllowedInterfaces returns the currently known/enabled multicast interfaces.
|
||||
func (m *Multicast) getAllowedInterfaces() map[string]interfaceInfo {
|
||||
interfaces := make(map[string]interfaceInfo)
|
||||
// Get interface expressions from config
|
||||
ifcfgs := m.config.MulticastInterfaces
|
||||
func (m *Multicast) _getAllowedInterfaces() map[string]*interfaceInfo {
|
||||
interfaces := make(map[string]*interfaceInfo)
|
||||
// Ask the system for network interfaces
|
||||
allifaces, err := net.Interfaces()
|
||||
if err != nil {
|
||||
@ -176,62 +172,55 @@ func (m *Multicast) getAllowedInterfaces() map[string]interfaceInfo {
|
||||
}
|
||||
// Work out which interfaces to announce on
|
||||
for _, iface := range allifaces {
|
||||
if iface.Flags&net.FlagUp == 0 {
|
||||
// Ignore interfaces that are down
|
||||
continue
|
||||
switch {
|
||||
case iface.Flags&net.FlagUp == 0:
|
||||
continue // Ignore interfaces that are down
|
||||
case iface.Flags&net.FlagMulticast == 0:
|
||||
continue // Ignore non-multicast interfaces
|
||||
case iface.Flags&net.FlagPointToPoint != 0:
|
||||
continue // Ignore point-to-point interfaces
|
||||
}
|
||||
if iface.Flags&net.FlagMulticast == 0 {
|
||||
// Ignore non-multicast interfaces
|
||||
continue
|
||||
}
|
||||
if iface.Flags&net.FlagPointToPoint != 0 {
|
||||
// Ignore point-to-point interfaces
|
||||
continue
|
||||
}
|
||||
for _, ifcfg := range ifcfgs {
|
||||
for ifcfg := range m.config._interfaces {
|
||||
// Compile each regular expression
|
||||
e, err := regexp.Compile(ifcfg.Regex)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
// Does the interface match the regular expression? Store it if so
|
||||
if e.MatchString(iface.Name) {
|
||||
if ifcfg.Beacon || ifcfg.Listen {
|
||||
info := interfaceInfo{
|
||||
iface: iface,
|
||||
beacon: ifcfg.Beacon,
|
||||
listen: ifcfg.Listen,
|
||||
port: ifcfg.Port,
|
||||
}
|
||||
interfaces[iface.Name] = info
|
||||
}
|
||||
break
|
||||
if !ifcfg.Beacon && !ifcfg.Listen {
|
||||
continue
|
||||
}
|
||||
if !ifcfg.Regex.MatchString(iface.Name) {
|
||||
continue
|
||||
}
|
||||
interfaces[iface.Name] = &interfaceInfo{
|
||||
iface: iface,
|
||||
beacon: ifcfg.Beacon,
|
||||
listen: ifcfg.Listen,
|
||||
port: ifcfg.Port,
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
return interfaces
|
||||
}
|
||||
|
||||
func (m *Multicast) _announce() {
|
||||
if !m.isOpen {
|
||||
if !m._isOpen {
|
||||
return
|
||||
}
|
||||
m._updateInterfaces()
|
||||
groupAddr, err := net.ResolveUDPAddr("udp6", m.groupAddr)
|
||||
groupAddr, err := net.ResolveUDPAddr("udp6", string(m.config._groupAddr))
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
destAddr, err := net.ResolveUDPAddr("udp6", m.groupAddr)
|
||||
destAddr, err := net.ResolveUDPAddr("udp6", string(m.config._groupAddr))
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
// There might be interfaces that we configured listeners for but are no
|
||||
// longer up - if that's the case then we should stop the listeners
|
||||
for name, info := range m.listeners {
|
||||
for name, info := range m._listeners {
|
||||
// Prepare our stop function!
|
||||
stop := func() {
|
||||
info.listener.Stop()
|
||||
delete(m.listeners, name)
|
||||
delete(m._listeners, name)
|
||||
m.log.Debugln("No longer multicasting on", name)
|
||||
}
|
||||
// If the interface is no longer visible on the system then stop the
|
||||
@ -290,7 +279,7 @@ func (m *Multicast) _announce() {
|
||||
}
|
||||
// Try and see if we already have a TCP listener for this interface
|
||||
var linfo *listenerInfo
|
||||
if nfo, ok := m.listeners[iface.Name]; !ok || nfo.listener.Listener == nil {
|
||||
if nfo, ok := m._listeners[iface.Name]; !ok || nfo.listener.Listener == nil {
|
||||
// No listener was found - let's create one
|
||||
urlString := fmt.Sprintf("tls://[%s]:%d", addrIP, info.port)
|
||||
u, err := url.Parse(urlString)
|
||||
@ -301,13 +290,13 @@ func (m *Multicast) _announce() {
|
||||
m.log.Debugln("Started multicasting on", iface.Name)
|
||||
// Store the listener so that we can stop it later if needed
|
||||
linfo = &listenerInfo{listener: li, time: time.Now(), port: info.port}
|
||||
m.listeners[iface.Name] = linfo
|
||||
m._listeners[iface.Name] = linfo
|
||||
} else {
|
||||
m.log.Warnln("Not multicasting on", iface.Name, "due to error:", err)
|
||||
}
|
||||
} else {
|
||||
// An existing listener was found
|
||||
linfo = m.listeners[iface.Name]
|
||||
linfo = m._listeners[iface.Name]
|
||||
}
|
||||
// Make sure nothing above failed for some reason
|
||||
if linfo == nil {
|
||||
@ -340,7 +329,7 @@ func (m *Multicast) _announce() {
|
||||
}
|
||||
|
||||
func (m *Multicast) listen() {
|
||||
groupAddr, err := net.ResolveUDPAddr("udp6", m.groupAddr)
|
||||
groupAddr, err := net.ResolveUDPAddr("udp6", string(m.config._groupAddr))
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
@ -388,7 +377,7 @@ func (m *Multicast) listen() {
|
||||
if !from.IP.Equal(addr.IP) {
|
||||
continue
|
||||
}
|
||||
var interfaces map[string]interfaceInfo
|
||||
var interfaces map[string]*interfaceInfo
|
||||
phony.Block(m, func() {
|
||||
interfaces = m._interfaces
|
||||
})
|
||||
|
@ -31,7 +31,7 @@ import (
|
||||
)
|
||||
|
||||
func (m *Multicast) _multicastStarted() {
|
||||
if !m.isOpen {
|
||||
if !m._isOpen {
|
||||
return
|
||||
}
|
||||
C.StopAWDLBrowsing()
|
||||
|
28
src/multicast/options.go
Normal file
28
src/multicast/options.go
Normal file
@ -0,0 +1,28 @@
|
||||
package multicast
|
||||
|
||||
import "regexp"
|
||||
|
||||
func (m *Multicast) _applyOption(opt SetupOption) {
|
||||
switch v := opt.(type) {
|
||||
case MulticastInterface:
|
||||
m.config._interfaces[v] = struct{}{}
|
||||
case GroupAddress:
|
||||
m.config._groupAddr = v
|
||||
}
|
||||
}
|
||||
|
||||
type SetupOption interface {
|
||||
isSetupOption()
|
||||
}
|
||||
|
||||
type MulticastInterface struct {
|
||||
Regex *regexp.Regexp
|
||||
Beacon bool
|
||||
Listen bool
|
||||
Port uint16
|
||||
}
|
||||
|
||||
type GroupAddress string
|
||||
|
||||
func (a MulticastInterface) isSetupOption() {}
|
||||
func (a GroupAddress) isSetupOption() {}
|
@ -8,6 +8,20 @@ import (
|
||||
"time"
|
||||
)
|
||||
|
||||
// Any logger that satisfies this interface is suitable for Yggdrasil.
|
||||
type Logger interface {
|
||||
Printf(string, ...interface{})
|
||||
Println(...interface{})
|
||||
Infof(string, ...interface{})
|
||||
Infoln(...interface{})
|
||||
Warnf(string, ...interface{})
|
||||
Warnln(...interface{})
|
||||
Errorf(string, ...interface{})
|
||||
Errorln(...interface{})
|
||||
Debugf(string, ...interface{})
|
||||
Debugln(...interface{})
|
||||
}
|
||||
|
||||
// TimerStop stops a timer and makes sure the channel is drained, returns true if the timer was stopped before firing.
|
||||
func TimerStop(t *time.Timer) bool {
|
||||
stopped := t.Stop()
|
||||
|
Loading…
Reference in New Issue
Block a user