mirror of
https://github.com/yggdrasil-network/yggdrasil-go.git
synced 2024-11-23 18:15:24 +00:00
Try to convert TUN/TAP to use new yggdrasil.Conn, search masks are still broken
This commit is contained in:
Neil Alexander
parent
319366513c
commit
d01662c1fb
@ -10,7 +10,6 @@ import (
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"os/signal"
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"strings"
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"syscall"
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"time"
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"golang.org/x/text/encoding/unicode"
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@ -77,57 +76,44 @@ func readConfig(useconf *bool, useconffile *string, normaliseconf *bool) *nodeCo
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panic(err)
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}
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json.Unmarshal(confJson, &cfg)
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// For now we will do a little bit to help the user adjust their
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// configuration to match the new configuration format, as some of the key
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// names have changed recently.
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changes := map[string]string{
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"Multicast": "",
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"ReadTimeout": "",
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"LinkLocal": "MulticastInterfaces",
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"BoxPub": "EncryptionPublicKey",
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"BoxPriv": "EncryptionPrivateKey",
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"SigPub": "SigningPublicKey",
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"SigPriv": "SigningPrivateKey",
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"AllowedBoxPubs": "AllowedEncryptionPublicKeys",
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}
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// Loop over the mappings aove and see if we have anything to fix.
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for from, to := range changes {
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if _, ok := dat[from]; ok {
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if to == "" {
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if !*normaliseconf {
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log.Println("Warning: Config option", from, "is deprecated")
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}
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} else {
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if !*normaliseconf {
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log.Println("Warning: Config option", from, "has been renamed - please change to", to)
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}
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// If the configuration file doesn't already contain a line with the
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// new name then set it to the old value. This makes sure that we
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// don't overwrite something that was put there intentionally.
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if _, ok := dat[to]; !ok {
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dat[to] = dat[from]
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/*
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// For now we will do a little bit to help the user adjust their
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// configuration to match the new configuration format, as some of the key
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// names have changed recently.
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changes := map[string]string{
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"Multicast": "",
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"ReadTimeout": "",
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"LinkLocal": "MulticastInterfaces",
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"BoxPub": "EncryptionPublicKey",
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"BoxPriv": "EncryptionPrivateKey",
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"SigPub": "SigningPublicKey",
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"SigPriv": "SigningPrivateKey",
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"AllowedBoxPubs": "AllowedEncryptionPublicKeys",
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}
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// Loop over the mappings aove and see if we have anything to fix.
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for from, to := range changes {
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if _, ok := dat[from]; ok {
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if to == "" {
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if !*normaliseconf {
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log.Println("Warning: Config option", from, "is deprecated")
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}
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} else {
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if !*normaliseconf {
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log.Println("Warning: Config option", from, "has been renamed - please change to", to)
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}
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// If the configuration file doesn't already contain a line with the
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// new name then set it to the old value. This makes sure that we
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// don't overwrite something that was put there intentionally.
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if _, ok := dat[to]; !ok {
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dat[to] = dat[from]
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}
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}
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}
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}
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}
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// Check to see if the peers are in a parsable format, if not then default
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// them to the TCP scheme
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if peers, ok := dat["Peers"].([]interface{}); ok {
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for index, peer := range peers {
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uri := peer.(string)
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if strings.HasPrefix(uri, "tcp://") || strings.HasPrefix(uri, "socks://") {
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continue
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}
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if strings.HasPrefix(uri, "tcp:") {
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uri = uri[4:]
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}
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(dat["Peers"].([]interface{}))[index] = "tcp://" + uri
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}
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}
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// Now do the same with the interface peers
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if interfacepeers, ok := dat["InterfacePeers"].(map[string]interface{}); ok {
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for intf, peers := range interfacepeers {
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for index, peer := range peers.([]interface{}) {
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// Check to see if the peers are in a parsable format, if not then default
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// them to the TCP scheme
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if peers, ok := dat["Peers"].([]interface{}); ok {
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for index, peer := range peers {
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uri := peer.(string)
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if strings.HasPrefix(uri, "tcp://") || strings.HasPrefix(uri, "socks://") {
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continue
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@ -135,19 +121,34 @@ func readConfig(useconf *bool, useconffile *string, normaliseconf *bool) *nodeCo
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if strings.HasPrefix(uri, "tcp:") {
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uri = uri[4:]
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}
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((dat["InterfacePeers"].(map[string]interface{}))[intf]).([]interface{})[index] = "tcp://" + uri
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(dat["Peers"].([]interface{}))[index] = "tcp://" + uri
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}
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}
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}
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// Do a quick check for old-format Listen statement so that mapstructure
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// doesn't fail and crash
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if listen, ok := dat["Listen"].(string); ok {
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if strings.HasPrefix(listen, "tcp://") {
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dat["Listen"] = []string{listen}
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} else {
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dat["Listen"] = []string{"tcp://" + listen}
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// Now do the same with the interface peers
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if interfacepeers, ok := dat["InterfacePeers"].(map[string]interface{}); ok {
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for intf, peers := range interfacepeers {
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for index, peer := range peers.([]interface{}) {
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uri := peer.(string)
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if strings.HasPrefix(uri, "tcp://") || strings.HasPrefix(uri, "socks://") {
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continue
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}
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if strings.HasPrefix(uri, "tcp:") {
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uri = uri[4:]
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}
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((dat["InterfacePeers"].(map[string]interface{}))[intf]).([]interface{})[index] = "tcp://" + uri
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}
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}
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}
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}
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// Do a quick check for old-format Listen statement so that mapstructure
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// doesn't fail and crash
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if listen, ok := dat["Listen"].(string); ok {
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if strings.HasPrefix(listen, "tcp://") {
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dat["Listen"] = []string{listen}
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} else {
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dat["Listen"] = []string{"tcp://" + listen}
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}
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}
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*/
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// Overlay our newly mapped configuration onto the autoconf node config that
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// we generated above.
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if err = mapstructure.Decode(dat, &cfg); err != nil {
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@ -249,8 +250,6 @@ func main() {
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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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n := node{}
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// Before we start the node, set the TUN/TAP to be our router adapter
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n.core.SetRouterAdapter(&n.tuntap)
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// Now start Yggdrasil - this starts the DHT, router, switch and other core
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// components needed for Yggdrasil to operate
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state, err := n.core.Start(cfg, logger)
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@ -263,72 +262,88 @@ func main() {
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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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// Start the TUN/TAP interface
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if listener, err := n.core.ConnListen(); err == nil {
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if dialer, err := n.core.ConnDialer(); err == nil {
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logger.Println("Got listener", listener, "and dialer", dialer)
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n.tuntap.Init(state, logger, listener, dialer)
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if err := n.tuntap.Start(); err != nil {
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logger.Errorln("An error occurred starting TUN/TAP:", err)
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}
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} else {
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logger.Errorln("Unable to get Dialer:", err)
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}
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} else {
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logger.Errorln("Unable to get Listener:", err)
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}
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// The Stop function ensures that the TUN/TAP adapter is correctly shut down
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// before the program exits.
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defer func() {
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n.core.Stop()
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}()
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// Listen for new sessions
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go func() {
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listener, err := n.core.ListenConn()
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if err != nil {
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logger.Errorln("Unable to listen for sessions:", err)
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return
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}
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for {
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conn, err := listener.Accept()
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if err != nil {
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logger.Errorln("Accept:", err)
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continue
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}
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logger.Println("Accepted")
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for {
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b := make([]byte, 100)
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if n, err := conn.Read(b); err != nil {
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logger.Errorln("Read failed:", err)
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time.Sleep(time.Second * 2)
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} else {
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logger.Println("Read", n, "bytes:", b)
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b = []byte{5, 5, 5}
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if n, err := conn.Write(b); err != nil {
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logger.Errorln("Write failed:", err)
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time.Sleep(time.Second * 2)
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} else {
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logger.Println("Wrote", n, "bytes:", b)
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}
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}
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}
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}
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}()
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// Try creating new sessions
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go func() {
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if cfg.EncryptionPublicKey != "533574224115f835b7c7db6433986bc5aef855ff9c9568c01abeb0fbed3e8810" {
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return
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}
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time.Sleep(time.Second * 2)
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conn, err := n.core.Dial("nodeid", "9890e135604e8aa6039a909e40c629824d852042a70e51957d5b9d700195663d50552e8e869af132b4617d76f8ef00314d94cce23aa8d6b051b3b952a32a4966")
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if err != nil {
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logger.Errorln("Dial:", err)
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return
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}
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/*
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go func() {
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listener, err := n.core.ListenConn()
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if err != nil {
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logger.Errorln("Unable to listen for sessions:", err)
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return
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}
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for {
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time.Sleep(time.Second * 2)
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b := []byte{1, 2, 3, 4, 5}
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if n, err := conn.Write(b); err != nil {
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logger.Errorln("Write failed:", err)
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} else {
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logger.Println("Wrote", n, "bytes:", b)
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b = make([]byte, 100)
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conn, err := listener.Accept()
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if err != nil {
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logger.Errorln("Accept:", err)
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continue
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}
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logger.Println("Accepted")
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for {
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b := make([]byte, 100)
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if n, err := conn.Read(b); err != nil {
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logger.Errorln("Read failed:", err)
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time.Sleep(time.Second * 2)
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} else {
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logger.Println("Read", n, "bytes:", b)
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b = []byte{5, 5, 5}
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if n, err := conn.Write(b); err != nil {
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logger.Errorln("Write failed:", err)
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time.Sleep(time.Second * 2)
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} else {
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logger.Println("Wrote", n, "bytes:", b)
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}
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}
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}
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}
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}()
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}()
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// Try creating new sessions
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go func() {
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if cfg.EncryptionPublicKey != "533574224115f835b7c7db6433986bc5aef855ff9c9568c01abeb0fbed3e8810" {
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return
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}
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time.Sleep(time.Second * 2)
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conn, err := n.core.Dial("nodeid", "9890e135604e8aa6039a909e40c629824d852042a70e51957d5b9d700195663d50552e8e869af132b4617d76f8ef00314d94cce23aa8d6b051b3b952a32a4966")
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if err != nil {
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logger.Errorln("Dial:", err)
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return
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}
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go func() {
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for {
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time.Sleep(time.Second * 2)
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b := []byte{1, 2, 3, 4, 5}
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if n, err := conn.Write(b); err != nil {
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logger.Errorln("Write failed:", err)
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} else {
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logger.Println("Wrote", n, "bytes:", b)
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b = make([]byte, 100)
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if n, err := conn.Read(b); err != nil {
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logger.Errorln("Read failed:", err)
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} else {
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logger.Println("Read", n, "bytes:", b)
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}
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}
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}
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}()
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}()
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*/
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// Make some nice output that tells us what our IPv6 address and subnet are.
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// This is just logged to stdout for the user.
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address := n.core.Address()
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@ -37,10 +37,37 @@ func (n *NodeID) String() string {
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return hex.EncodeToString(n[:])
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}
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// Network returns "nodeid" nearly always right now.
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func (n *NodeID) Network() string {
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return "nodeid"
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}
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// PrefixLength returns the number of bits set in a masked NodeID.
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func (n *NodeID) PrefixLength() int {
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var len int
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for i, v := range *n {
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_, _ = i, v
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if v == 0xff {
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len += 8
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continue
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}
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for v&0x80 != 0 {
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len++
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v <<= 1
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}
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if v != 0 {
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return -1
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}
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for i++; i < NodeIDLen; i++ {
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if n[i] != 0 {
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return -1
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}
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}
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break
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}
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return len
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}
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func GetNodeID(pub *BoxPubKey) *NodeID {
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h := sha512.Sum512(pub[:])
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return (*NodeID)(&h)
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@ -3,7 +3,7 @@ package tuntap
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// This manages the tun driver to send/recv packets to/from applications
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import (
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"bytes"
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"encoding/hex"
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"errors"
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"fmt"
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"net"
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@ -11,16 +11,12 @@ import (
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"time"
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"github.com/gologme/log"
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"golang.org/x/net/icmp"
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"golang.org/x/net/ipv6"
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"github.com/songgao/packets/ethernet"
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"github.com/yggdrasil-network/water"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/config"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
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"github.com/yggdrasil-network/yggdrasil-go/src/util"
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"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
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)
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@ -32,14 +28,20 @@ const tun_ETHER_HEADER_LENGTH = 14
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// you should pass this object to the yggdrasil.SetRouterAdapter() function
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// before calling yggdrasil.Start().
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type TunAdapter struct {
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yggdrasil.Adapter
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addr address.Address
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subnet address.Subnet
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icmpv6 ICMPv6
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mtu int
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iface *water.Interface
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mutex sync.RWMutex // Protects the below
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isOpen bool
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config *config.NodeState
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log *log.Logger
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reconfigure chan chan error
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conns map[crypto.NodeID]yggdrasil.Conn
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connsMutex sync.RWMutex
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listener *yggdrasil.Listener
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dialer *yggdrasil.Dialer
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addr address.Address
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subnet address.Subnet
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icmpv6 ICMPv6
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mtu int
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iface *water.Interface
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mutex sync.RWMutex // Protects the below
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isOpen bool
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}
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// Gets the maximum supported MTU for the platform based on the defaults in
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@ -94,62 +96,48 @@ func MaximumMTU() int {
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return defaults.GetDefaults().MaximumIfMTU
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}
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// Init initialises the TUN/TAP adapter.
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func (tun *TunAdapter) Init(config *config.NodeState, log *log.Logger, send chan<- []byte, recv <-chan []byte, reject <-chan yggdrasil.RejectedPacket) {
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tun.Adapter.Init(config, log, send, recv, reject)
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tun.icmpv6.Init(tun)
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go func() {
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for {
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e := <-tun.Reconfigure
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tun.Config.Mutex.RLock()
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updated := tun.Config.Current.IfName != tun.Config.Previous.IfName ||
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tun.Config.Current.IfTAPMode != tun.Config.Previous.IfTAPMode ||
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tun.Config.Current.IfMTU != tun.Config.Previous.IfMTU
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tun.Config.Mutex.RUnlock()
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if updated {
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tun.Log.Warnln("Reconfiguring TUN/TAP is not supported yet")
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e <- nil
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} else {
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e <- nil
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}
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}
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}()
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// Init initialises the TUN/TAP module. You must have acquired a Listener from
|
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// the Yggdrasil core before this point and it must not be in use elsewhere.
|
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func (tun *TunAdapter) Init(config *config.NodeState, log *log.Logger, listener *yggdrasil.Listener, dialer *yggdrasil.Dialer) {
|
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tun.config = config
|
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tun.log = log
|
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tun.listener = listener
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tun.dialer = dialer
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tun.conns = make(map[crypto.NodeID]yggdrasil.Conn)
|
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}
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// Start the setup process for the TUN/TAP adapter. If successful, starts the
|
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// read/write goroutines to handle packets on that interface.
|
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func (tun *TunAdapter) Start(a address.Address, s address.Subnet) error {
|
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tun.addr = a
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tun.subnet = s
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if tun.Config == nil {
|
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func (tun *TunAdapter) Start() error {
|
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tun.config.Mutex.Lock()
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defer tun.config.Mutex.Unlock()
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if tun.config == nil || tun.listener == nil || tun.dialer == nil {
|
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return errors.New("No configuration available to TUN/TAP")
|
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}
|
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tun.Config.Mutex.RLock()
|
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ifname := tun.Config.Current.IfName
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iftapmode := tun.Config.Current.IfTAPMode
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addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1)
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mtu := tun.Config.Current.IfMTU
|
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tun.Config.Mutex.RUnlock()
|
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var boxPub crypto.BoxPubKey
|
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boxPubHex, err := hex.DecodeString(tun.config.Current.EncryptionPublicKey)
|
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if err != nil {
|
||||
return err
|
||||
}
|
||||
copy(boxPub[:], boxPubHex)
|
||||
nodeID := crypto.GetNodeID(&boxPub)
|
||||
tun.addr = *address.AddrForNodeID(nodeID)
|
||||
tun.subnet = *address.SubnetForNodeID(nodeID)
|
||||
tun.mtu = tun.config.Current.IfMTU
|
||||
ifname := tun.config.Current.IfName
|
||||
iftapmode := tun.config.Current.IfTAPMode
|
||||
if ifname != "none" {
|
||||
if err := tun.setup(ifname, iftapmode, addr, mtu); err != nil {
|
||||
if err := tun.setup(ifname, iftapmode, net.IP(tun.addr[:]).String(), tun.mtu); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if ifname == "none" || ifname == "dummy" {
|
||||
tun.Log.Debugln("Not starting TUN/TAP as ifname is none or dummy")
|
||||
tun.log.Debugln("Not starting TUN/TAP as ifname is none or dummy")
|
||||
return nil
|
||||
}
|
||||
tun.mutex.Lock()
|
||||
tun.isOpen = true
|
||||
tun.mutex.Unlock()
|
||||
go func() {
|
||||
tun.Log.Debugln("Starting TUN/TAP reader goroutine")
|
||||
tun.Log.Errorln("WARNING: tun.read() exited with error:", tun.read())
|
||||
}()
|
||||
go func() {
|
||||
tun.Log.Debugln("Starting TUN/TAP writer goroutine")
|
||||
tun.Log.Errorln("WARNING: tun.write() exited with error:", tun.write())
|
||||
}()
|
||||
if iftapmode {
|
||||
go func() {
|
||||
for {
|
||||
@ -167,74 +155,215 @@ func (tun *TunAdapter) Start(a address.Address, s address.Subnet) error {
|
||||
}
|
||||
}()
|
||||
}
|
||||
tun.icmpv6.Init(tun)
|
||||
go func() {
|
||||
for {
|
||||
e := <-tun.reconfigure
|
||||
e <- nil
|
||||
}
|
||||
}()
|
||||
go tun.handler()
|
||||
go tun.ifaceReader()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) handler() error {
|
||||
for {
|
||||
// Accept the incoming connection
|
||||
conn, err := tun.listener.Accept()
|
||||
if err != nil {
|
||||
tun.log.Errorln("TUN/TAP error accepting connection:", err)
|
||||
return err
|
||||
}
|
||||
tun.log.Println("Accepted connection from", conn.RemoteAddr())
|
||||
go tun.connReader(conn)
|
||||
}
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) connReader(conn *yggdrasil.Conn) error {
|
||||
b := make([]byte, 65535)
|
||||
for {
|
||||
n, err := conn.Read(b)
|
||||
if err != nil {
|
||||
tun.log.Errorln("TUN/TAP read error:", err)
|
||||
return err
|
||||
}
|
||||
if n == 0 {
|
||||
continue
|
||||
}
|
||||
w, err := tun.iface.Write(b[:n])
|
||||
if err != nil {
|
||||
tun.log.Errorln("TUN/TAP failed to write to interface:", err)
|
||||
continue
|
||||
}
|
||||
if w != n {
|
||||
tun.log.Errorln("TUN/TAP wrote", w, "instead of", n, "which is bad")
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) ifaceReader() error {
|
||||
tun.log.Println("Start TUN reader")
|
||||
bs := make([]byte, 65535)
|
||||
for {
|
||||
n, err := tun.iface.Read(bs)
|
||||
if err != nil {
|
||||
tun.log.Errorln("TUN/TAP iface read error:", err)
|
||||
}
|
||||
// Look up if the dstination address is somewhere we already have an
|
||||
// open connection to
|
||||
var srcAddr address.Address
|
||||
var dstAddr address.Address
|
||||
var dstNodeID *crypto.NodeID
|
||||
var dstNodeIDMask *crypto.NodeID
|
||||
var dstSnet address.Subnet
|
||||
var addrlen int
|
||||
if bs[0]&0xf0 == 0x60 {
|
||||
// Check if we have a fully-sized header
|
||||
if len(bs) < 40 {
|
||||
panic("Tried to send a packet shorter than an IPv6 header...")
|
||||
}
|
||||
// IPv6 address
|
||||
addrlen = 16
|
||||
copy(srcAddr[:addrlen], bs[8:])
|
||||
copy(dstAddr[:addrlen], bs[24:])
|
||||
copy(dstSnet[:addrlen/2], bs[24:])
|
||||
} else if bs[0]&0xf0 == 0x40 {
|
||||
// Check if we have a fully-sized header
|
||||
if len(bs) < 20 {
|
||||
panic("Tried to send a packet shorter than an IPv4 header...")
|
||||
}
|
||||
// IPv4 address
|
||||
addrlen = 4
|
||||
copy(srcAddr[:addrlen], bs[12:])
|
||||
copy(dstAddr[:addrlen], bs[16:])
|
||||
} else {
|
||||
// Unknown address length
|
||||
continue
|
||||
}
|
||||
dstNodeID, dstNodeIDMask = dstAddr.GetNodeIDandMask()
|
||||
// Do we have an active connection for this node ID?
|
||||
if conn, isIn := tun.conns[*dstNodeID]; isIn {
|
||||
fmt.Println("We have a connection for", *dstNodeID)
|
||||
w, err := conn.Write(bs)
|
||||
if err != nil {
|
||||
fmt.Println("Unable to write to remote:", err)
|
||||
continue
|
||||
}
|
||||
if w != n {
|
||||
continue
|
||||
}
|
||||
} else {
|
||||
fmt.Println("Opening connection for", *dstNodeID)
|
||||
tun.connsMutex.Lock()
|
||||
maskstr := hex.EncodeToString(dstNodeID[:])
|
||||
masklen := dstNodeIDMask.PrefixLength()
|
||||
cidr := fmt.Sprintf("%s/%d", maskstr, masklen)
|
||||
if conn, err := tun.dialer.Dial("nodeid", cidr); err == nil {
|
||||
tun.conns[*dstNodeID] = conn
|
||||
go tun.connReader(&conn)
|
||||
} else {
|
||||
fmt.Println("Error dialing:", err)
|
||||
}
|
||||
tun.connsMutex.Unlock()
|
||||
}
|
||||
|
||||
/*if !r.cryptokey.isValidSource(srcAddr, addrlen) {
|
||||
// The packet had a src address that doesn't belong to us or our
|
||||
// configured crypto-key routing src subnets
|
||||
return
|
||||
}
|
||||
if !dstAddr.IsValid() && !dstSnet.IsValid() {
|
||||
// The addresses didn't match valid Yggdrasil node addresses so let's see
|
||||
// whether it matches a crypto-key routing range instead
|
||||
if key, err := r.cryptokey.getPublicKeyForAddress(dstAddr, addrlen); err == nil {
|
||||
// A public key was found, get the node ID for the search
|
||||
dstPubKey = &key
|
||||
dstNodeID = crypto.GetNodeID(dstPubKey)
|
||||
// Do a quick check to ensure that the node ID refers to a vaild Yggdrasil
|
||||
// address or subnet - this might be superfluous
|
||||
addr := *address.AddrForNodeID(dstNodeID)
|
||||
copy(dstAddr[:], addr[:])
|
||||
copy(dstSnet[:], addr[:])
|
||||
if !dstAddr.IsValid() && !dstSnet.IsValid() {
|
||||
return
|
||||
}
|
||||
} else {
|
||||
// No public key was found in the CKR table so we've exhausted our options
|
||||
return
|
||||
}
|
||||
}*/
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
// Writes a packet to the TUN/TAP adapter. If the adapter is running in TAP
|
||||
// mode then additional ethernet encapsulation is added for the benefit of the
|
||||
// host operating system.
|
||||
/*
|
||||
func (tun *TunAdapter) write() error {
|
||||
for {
|
||||
select {
|
||||
case reject := <-tun.Reject:
|
||||
switch reject.Reason {
|
||||
case yggdrasil.PacketTooBig:
|
||||
if mtu, ok := reject.Detail.(int); ok {
|
||||
// Create the Packet Too Big response
|
||||
ptb := &icmp.PacketTooBig{
|
||||
MTU: int(mtu),
|
||||
Data: reject.Packet,
|
||||
}
|
||||
|
||||
// Create the ICMPv6 response from it
|
||||
icmpv6Buf, err := CreateICMPv6(
|
||||
reject.Packet[8:24], reject.Packet[24:40],
|
||||
ipv6.ICMPTypePacketTooBig, 0, ptb)
|
||||
|
||||
// Send the ICMPv6 response back to the TUN/TAP adapter
|
||||
if err == nil {
|
||||
tun.iface.Write(icmpv6Buf)
|
||||
}
|
||||
switch reject.Reason {
|
||||
case yggdrasil.PacketTooBig:
|
||||
if mtu, ok := reject.Detail.(int); ok {
|
||||
// Create the Packet Too Big response
|
||||
ptb := &icmp.PacketTooBig{
|
||||
MTU: int(mtu),
|
||||
Data: reject.Packet,
|
||||
}
|
||||
|
||||
// Create the ICMPv6 response from it
|
||||
icmpv6Buf, err := CreateICMPv6(
|
||||
reject.Packet[8:24], reject.Packet[24:40],
|
||||
ipv6.ICMPTypePacketTooBig, 0, ptb)
|
||||
|
||||
// Send the ICMPv6 response back to the TUN/TAP adapter
|
||||
if err == nil {
|
||||
tun.iface.Write(icmpv6Buf)
|
||||
}
|
||||
fallthrough
|
||||
default:
|
||||
continue
|
||||
}
|
||||
fallthrough
|
||||
default:
|
||||
continue
|
||||
}
|
||||
case data := <-tun.Recv:
|
||||
if tun.iface == nil {
|
||||
continue
|
||||
}
|
||||
if tun.iface.IsTAP() {
|
||||
var destAddr address.Address
|
||||
var dstAddr address.Address
|
||||
if data[0]&0xf0 == 0x60 {
|
||||
if len(data) < 40 {
|
||||
//panic("Tried to send a packet shorter than an IPv6 header...")
|
||||
util.PutBytes(data)
|
||||
continue
|
||||
}
|
||||
copy(destAddr[:16], data[24:])
|
||||
copy(dstAddr[:16], data[24:])
|
||||
} else if data[0]&0xf0 == 0x40 {
|
||||
if len(data) < 20 {
|
||||
//panic("Tried to send a packet shorter than an IPv4 header...")
|
||||
util.PutBytes(data)
|
||||
continue
|
||||
}
|
||||
copy(destAddr[:4], data[16:])
|
||||
copy(dstAddr[:4], data[16:])
|
||||
} else {
|
||||
return errors.New("Invalid address family")
|
||||
}
|
||||
sendndp := func(destAddr address.Address) {
|
||||
neigh, known := tun.icmpv6.peermacs[destAddr]
|
||||
sendndp := func(dstAddr address.Address) {
|
||||
neigh, known := tun.icmpv6.peermacs[dstAddr]
|
||||
known = known && (time.Since(neigh.lastsolicitation).Seconds() < 30)
|
||||
if !known {
|
||||
request, err := tun.icmpv6.CreateNDPL2(destAddr)
|
||||
request, err := tun.icmpv6.CreateNDPL2(dstAddr)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if _, err := tun.iface.Write(request); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
tun.icmpv6.peermacs[destAddr] = neighbor{
|
||||
tun.icmpv6.peermacs[dstAddr] = neighbor{
|
||||
lastsolicitation: time.Now(),
|
||||
}
|
||||
}
|
||||
@ -242,19 +371,19 @@ func (tun *TunAdapter) write() error {
|
||||
var peermac macAddress
|
||||
var peerknown bool
|
||||
if data[0]&0xf0 == 0x40 {
|
||||
destAddr = tun.addr
|
||||
dstAddr = tun.addr
|
||||
} else if data[0]&0xf0 == 0x60 {
|
||||
if !bytes.Equal(tun.addr[:16], destAddr[:16]) && !bytes.Equal(tun.subnet[:8], destAddr[:8]) {
|
||||
destAddr = tun.addr
|
||||
if !bytes.Equal(tun.addr[:16], dstAddr[:16]) && !bytes.Equal(tun.subnet[:8], dstAddr[:8]) {
|
||||
dstAddr = tun.addr
|
||||
}
|
||||
}
|
||||
if neighbor, ok := tun.icmpv6.peermacs[destAddr]; ok && neighbor.learned {
|
||||
if neighbor, ok := tun.icmpv6.peermacs[dstAddr]; ok && neighbor.learned {
|
||||
peermac = neighbor.mac
|
||||
peerknown = true
|
||||
} else if neighbor, ok := tun.icmpv6.peermacs[tun.addr]; ok && neighbor.learned {
|
||||
peermac = neighbor.mac
|
||||
peerknown = true
|
||||
sendndp(destAddr)
|
||||
sendndp(dstAddr)
|
||||
} else {
|
||||
sendndp(tun.addr)
|
||||
}
|
||||
@ -359,3 +488,4 @@ func (tun *TunAdapter) Close() error {
|
||||
}
|
||||
return tun.iface.Close()
|
||||
}
|
||||
*/
|
||||
|
||||
@ -109,14 +109,14 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
|
||||
// Create system socket
|
||||
if sfd, err = unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0); err != nil {
|
||||
tun.Log.Printf("Create AF_INET socket failed: %v.", err)
|
||||
tun.log.Printf("Create AF_INET socket failed: %v.", err)
|
||||
return err
|
||||
}
|
||||
|
||||
// Friendly output
|
||||
tun.Log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.Log.Infof("Interface IPv6: %s", addr)
|
||||
tun.Log.Infof("Interface MTU: %d", tun.mtu)
|
||||
tun.log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.log.Infof("Interface IPv6: %s", addr)
|
||||
tun.log.Infof("Interface MTU: %d", tun.mtu)
|
||||
|
||||
// Create the MTU request
|
||||
var ir in6_ifreq_mtu
|
||||
@ -126,15 +126,15 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
// Set the MTU
|
||||
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(sfd), uintptr(syscall.SIOCSIFMTU), uintptr(unsafe.Pointer(&ir))); errno != 0 {
|
||||
err = errno
|
||||
tun.Log.Errorf("Error in SIOCSIFMTU: %v", errno)
|
||||
tun.log.Errorf("Error in SIOCSIFMTU: %v", errno)
|
||||
|
||||
// Fall back to ifconfig to set the MTU
|
||||
cmd := exec.Command("ifconfig", tun.iface.Name(), "mtu", string(tun.mtu))
|
||||
tun.Log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("SIOCSIFMTU fallback failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("SIOCSIFMTU fallback failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
}
|
||||
}
|
||||
|
||||
@ -155,15 +155,15 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
// Set the interface address
|
||||
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(sfd), uintptr(SIOCSIFADDR_IN6), uintptr(unsafe.Pointer(&ar))); errno != 0 {
|
||||
err = errno
|
||||
tun.Log.Errorf("Error in SIOCSIFADDR_IN6: %v", errno)
|
||||
tun.log.Errorf("Error in SIOCSIFADDR_IN6: %v", errno)
|
||||
|
||||
// Fall back to ifconfig to set the address
|
||||
cmd := exec.Command("ifconfig", tun.iface.Name(), "inet6", addr)
|
||||
tun.Log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Warnf("Using ifconfig as fallback: %v", strings.Join(cmd.Args, " "))
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("SIOCSIFADDR_IN6 fallback failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("SIOCSIFADDR_IN6 fallback failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -18,7 +18,7 @@ import (
|
||||
// Configures the "utun" adapter with the correct IPv6 address and MTU.
|
||||
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
|
||||
if iftapmode {
|
||||
tun.Log.Warnln("TAP mode is not supported on this platform, defaulting to TUN")
|
||||
tun.log.Warnln("TAP mode is not supported on this platform, defaulting to TUN")
|
||||
}
|
||||
config := water.Config{DeviceType: water.TUN}
|
||||
iface, err := water.New(config)
|
||||
@ -69,7 +69,7 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
var err error
|
||||
|
||||
if fd, err = unix.Socket(unix.AF_INET6, unix.SOCK_DGRAM, 0); err != nil {
|
||||
tun.Log.Printf("Create AF_SYSTEM socket failed: %v.", err)
|
||||
tun.log.Printf("Create AF_SYSTEM socket failed: %v.", err)
|
||||
return err
|
||||
}
|
||||
|
||||
@ -98,19 +98,19 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
copy(ir.ifr_name[:], tun.iface.Name())
|
||||
ir.ifru_mtu = uint32(tun.mtu)
|
||||
|
||||
tun.Log.Infof("Interface name: %s", ar.ifra_name)
|
||||
tun.Log.Infof("Interface IPv6: %s", addr)
|
||||
tun.Log.Infof("Interface MTU: %d", ir.ifru_mtu)
|
||||
tun.log.Infof("Interface name: %s", ar.ifra_name)
|
||||
tun.log.Infof("Interface IPv6: %s", addr)
|
||||
tun.log.Infof("Interface MTU: %d", ir.ifru_mtu)
|
||||
|
||||
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(darwin_SIOCAIFADDR_IN6), uintptr(unsafe.Pointer(&ar))); errno != 0 {
|
||||
err = errno
|
||||
tun.Log.Errorf("Error in darwin_SIOCAIFADDR_IN6: %v", errno)
|
||||
tun.log.Errorf("Error in darwin_SIOCAIFADDR_IN6: %v", errno)
|
||||
return err
|
||||
}
|
||||
|
||||
if _, _, errno := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(unix.SIOCSIFMTU), uintptr(unsafe.Pointer(&ir))); errno != 0 {
|
||||
err = errno
|
||||
tun.Log.Errorf("Error in SIOCSIFMTU: %v", errno)
|
||||
tun.log.Errorf("Error in SIOCSIFMTU: %v", errno)
|
||||
return err
|
||||
}
|
||||
|
||||
|
||||
@ -40,9 +40,9 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
}
|
||||
}
|
||||
// Friendly output
|
||||
tun.Log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.Log.Infof("Interface IPv6: %s", addr)
|
||||
tun.Log.Infof("Interface MTU: %d", tun.mtu)
|
||||
tun.log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.log.Infof("Interface IPv6: %s", addr)
|
||||
tun.log.Infof("Interface MTU: %d", tun.mtu)
|
||||
return tun.setupAddress(addr)
|
||||
}
|
||||
|
||||
|
||||
@ -28,6 +28,6 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
// We don't know how to set the IPv6 address on an unknown platform, therefore
|
||||
// write about it to stdout and don't try to do anything further.
|
||||
func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
tun.Log.Warnln("Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
|
||||
tun.log.Warnln("Platform not supported, you must set the address of", tun.iface.Name(), "to", addr)
|
||||
return nil
|
||||
}
|
||||
|
||||
@ -15,7 +15,7 @@ import (
|
||||
// delegate the hard work to "netsh".
|
||||
func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int) error {
|
||||
if !iftapmode {
|
||||
tun.Log.Warnln("TUN mode is not supported on this platform, defaulting to TAP")
|
||||
tun.log.Warnln("TUN mode is not supported on this platform, defaulting to TAP")
|
||||
}
|
||||
config := water.Config{DeviceType: water.TAP}
|
||||
config.PlatformSpecificParams.ComponentID = "tap0901"
|
||||
@ -31,19 +31,19 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
}
|
||||
// Disable/enable the interface to resets its configuration (invalidating iface)
|
||||
cmd := exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=DISABLED")
|
||||
tun.Log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
return err
|
||||
}
|
||||
cmd = exec.Command("netsh", "interface", "set", "interface", iface.Name(), "admin=ENABLED")
|
||||
tun.Log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Printf("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
output, err = cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
return err
|
||||
}
|
||||
// Get a new iface
|
||||
@ -58,9 +58,9 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
|
||||
panic(err)
|
||||
}
|
||||
// Friendly output
|
||||
tun.Log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.Log.Infof("Interface IPv6: %s", addr)
|
||||
tun.Log.Infof("Interface MTU: %d", tun.mtu)
|
||||
tun.log.Infof("Interface name: %s", tun.iface.Name())
|
||||
tun.log.Infof("Interface IPv6: %s", addr)
|
||||
tun.log.Infof("Interface MTU: %d", tun.mtu)
|
||||
return tun.setupAddress(addr)
|
||||
}
|
||||
|
||||
@ -71,11 +71,11 @@ func (tun *TunAdapter) setupMTU(mtu int) error {
|
||||
fmt.Sprintf("interface=%s", tun.iface.Name()),
|
||||
fmt.Sprintf("mtu=%d", mtu),
|
||||
"store=active")
|
||||
tun.Log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
@ -88,11 +88,11 @@ func (tun *TunAdapter) setupAddress(addr string) error {
|
||||
fmt.Sprintf("interface=%s", tun.iface.Name()),
|
||||
fmt.Sprintf("addr=%s", addr),
|
||||
"store=active")
|
||||
tun.Log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
tun.log.Debugln("netsh command: %v", strings.Join(cmd.Args, " "))
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
tun.Log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.Log.Traceln(string(output))
|
||||
tun.log.Errorf("Windows netsh failed: %v.", err)
|
||||
tun.log.Traceln(string(output))
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
|
||||
@ -1,47 +0,0 @@
|
||||
package yggdrasil
|
||||
|
||||
import (
|
||||
"github.com/gologme/log"
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/address"
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/config"
|
||||
)
|
||||
|
||||
// Adapter defines the minimum required struct members for an adapter type. This
|
||||
// is now the base type for adapters like tun.go. When implementing a new
|
||||
// adapter type, you should extend the adapter struct with this one and should
|
||||
// call the Adapter.Init() function when initialising.
|
||||
type Adapter struct {
|
||||
adapterImplementation
|
||||
Core *Core
|
||||
Config *config.NodeState
|
||||
Log *log.Logger
|
||||
Send chan<- []byte
|
||||
Recv <-chan []byte
|
||||
Reject <-chan RejectedPacket
|
||||
Reconfigure chan chan error
|
||||
}
|
||||
|
||||
// Defines the minimum required functions for an adapter type. Note that the
|
||||
// implementation of Init() should call Adapter.Init(). This is not exported
|
||||
// because doing so breaks the gomobile bindings for iOS/Android.
|
||||
type adapterImplementation interface {
|
||||
Init(*config.NodeState, *log.Logger, chan<- []byte, <-chan []byte, <-chan RejectedPacket)
|
||||
Name() string
|
||||
MTU() int
|
||||
IsTAP() bool
|
||||
Start(address.Address, address.Subnet) error
|
||||
Close() error
|
||||
}
|
||||
|
||||
// Init initialises the adapter with the necessary channels to operate from the
|
||||
// router. When defining a new Adapter type, the Adapter should call this
|
||||
// function from within it's own Init function to set up the channels. It is
|
||||
// otherwise not expected for you to call this function directly.
|
||||
func (adapter *Adapter) Init(config *config.NodeState, log *log.Logger, send chan<- []byte, recv <-chan []byte, reject <-chan RejectedPacket) {
|
||||
adapter.Config = config
|
||||
adapter.Log = log
|
||||
adapter.Send = send
|
||||
adapter.Recv = recv
|
||||
adapter.Reject = reject
|
||||
adapter.Reconfigure = make(chan chan error, 1)
|
||||
}
|
||||
@ -16,7 +16,7 @@ type Conn struct {
|
||||
nodeID *crypto.NodeID
|
||||
nodeMask *crypto.NodeID
|
||||
session *sessionInfo
|
||||
sessionMutex *sync.RWMutex
|
||||
mutex *sync.RWMutex
|
||||
readDeadline time.Time
|
||||
writeDeadline time.Time
|
||||
expired bool
|
||||
@ -30,9 +30,10 @@ func (c *Conn) startSearch() {
|
||||
return
|
||||
}
|
||||
if sinfo != nil {
|
||||
c.sessionMutex.Lock()
|
||||
c.mutex.Lock()
|
||||
c.session = sinfo
|
||||
c.sessionMutex.Unlock()
|
||||
c.nodeID, c.nodeMask = sinfo.theirAddr.GetNodeIDandMask()
|
||||
c.mutex.Unlock()
|
||||
}
|
||||
}
|
||||
doSearch := func() {
|
||||
@ -65,8 +66,8 @@ func (c *Conn) startSearch() {
|
||||
}
|
||||
|
||||
func (c *Conn) Read(b []byte) (int, error) {
|
||||
c.sessionMutex.RLock()
|
||||
defer c.sessionMutex.RUnlock()
|
||||
c.mutex.RLock()
|
||||
defer c.mutex.RUnlock()
|
||||
if c.expired {
|
||||
return 0, errors.New("session is closed")
|
||||
}
|
||||
@ -119,8 +120,8 @@ func (c *Conn) Read(b []byte) (int, error) {
|
||||
}
|
||||
|
||||
func (c *Conn) Write(b []byte) (bytesWritten int, err error) {
|
||||
c.sessionMutex.RLock()
|
||||
defer c.sessionMutex.RUnlock()
|
||||
c.mutex.RLock()
|
||||
defer c.mutex.RUnlock()
|
||||
if c.expired {
|
||||
return 0, errors.New("session is closed")
|
||||
}
|
||||
@ -175,7 +176,9 @@ func (c *Conn) LocalAddr() crypto.NodeID {
|
||||
}
|
||||
|
||||
func (c *Conn) RemoteAddr() crypto.NodeID {
|
||||
return *crypto.GetNodeID(&c.session.theirPermPub)
|
||||
c.mutex.RLock()
|
||||
defer c.mutex.RUnlock()
|
||||
return *c.nodeID
|
||||
}
|
||||
|
||||
func (c *Conn) SetDeadline(t time.Time) error {
|
||||
|
||||
@ -5,7 +5,6 @@ import (
|
||||
"errors"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/gologme/log"
|
||||
@ -77,7 +76,6 @@ func (c *Core) init() error {
|
||||
c.searches.init(c)
|
||||
c.dht.init(c)
|
||||
c.sessions.init(c)
|
||||
//c.multicast.init(c)
|
||||
c.peers.init(c)
|
||||
c.router.init(c)
|
||||
c.switchTable.init(c) // TODO move before peers? before router?
|
||||
@ -168,21 +166,6 @@ func BuildVersion() string {
|
||||
return buildVersion
|
||||
}
|
||||
|
||||
// SetRouterAdapter instructs Yggdrasil to use the given adapter when starting
|
||||
// the router. The adapter must implement the standard
|
||||
// adapter.adapterImplementation interface and should extend the adapter.Adapter
|
||||
// struct.
|
||||
func (c *Core) SetRouterAdapter(adapter interface{}) error {
|
||||
// We do this because adapterImplementation is not a valid type for the
|
||||
// gomobile bindings so we just ask for a generic interface and try to cast it
|
||||
// to adapterImplementation instead
|
||||
if a, ok := adapter.(adapterImplementation); ok {
|
||||
c.router.adapter = a
|
||||
return nil
|
||||
}
|
||||
return errors.New("unsuitable adapter")
|
||||
}
|
||||
|
||||
// Start starts up Yggdrasil using the provided config.NodeConfig, and outputs
|
||||
// debug logging through the provided log.Logger. The started stack will include
|
||||
// TCP and UDP sockets, a multicast discovery socket, an admin socket, router,
|
||||
@ -233,13 +216,6 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) (*config.NodeState,
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if c.router.adapter != nil {
|
||||
if err := c.router.adapter.Start(c.router.addr, c.router.subnet); err != nil {
|
||||
c.log.Errorln("Failed to start TUN/TAP")
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
go c.addPeerLoop()
|
||||
|
||||
c.log.Infoln("Startup complete")
|
||||
@ -249,14 +225,11 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) (*config.NodeState,
|
||||
// Stop shuts down the Yggdrasil node.
|
||||
func (c *Core) Stop() {
|
||||
c.log.Infoln("Stopping...")
|
||||
if c.router.adapter != nil {
|
||||
c.router.adapter.Close()
|
||||
}
|
||||
c.admin.close()
|
||||
}
|
||||
|
||||
// ListenConn returns a listener for Yggdrasil session connections.
|
||||
func (c *Core) ListenConn() (*Listener, error) {
|
||||
func (c *Core) ConnListen() (*Listener, error) {
|
||||
c.sessions.listenerMutex.Lock()
|
||||
defer c.sessions.listenerMutex.Unlock()
|
||||
if c.sessions.listener != nil {
|
||||
@ -270,40 +243,11 @@ func (c *Core) ListenConn() (*Listener, error) {
|
||||
return c.sessions.listener, nil
|
||||
}
|
||||
|
||||
// Dial opens a session to the given node. The first paramter should be "nodeid"
|
||||
// and the second parameter should contain a hexadecimal representation of the
|
||||
// target node ID.
|
||||
func (c *Core) Dial(network, address string) (Conn, error) {
|
||||
conn := Conn{
|
||||
sessionMutex: &sync.RWMutex{},
|
||||
}
|
||||
nodeID := crypto.NodeID{}
|
||||
nodeMask := crypto.NodeID{}
|
||||
// Process
|
||||
switch network {
|
||||
case "nodeid":
|
||||
// A node ID was provided - we don't need to do anything special with it
|
||||
dest, err := hex.DecodeString(address)
|
||||
if err != nil {
|
||||
return Conn{}, err
|
||||
}
|
||||
copy(nodeID[:], dest)
|
||||
for i := range nodeMask {
|
||||
nodeMask[i] = 0xFF
|
||||
}
|
||||
default:
|
||||
// An unexpected address type was given, so give up
|
||||
return Conn{}, errors.New("unexpected address type")
|
||||
}
|
||||
conn.core = c
|
||||
conn.nodeID = &nodeID
|
||||
conn.nodeMask = &nodeMask
|
||||
conn.core.router.doAdmin(func() {
|
||||
conn.startSearch()
|
||||
})
|
||||
conn.sessionMutex.Lock()
|
||||
defer conn.sessionMutex.Unlock()
|
||||
return conn, nil
|
||||
// ConnDialer returns a dialer for Yggdrasil session connections.
|
||||
func (c *Core) ConnDialer() (*Dialer, error) {
|
||||
return &Dialer{
|
||||
core: c,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// ListenTCP starts a new TCP listener. The input URI should match that of the
|
||||
|
||||
70
src/yggdrasil/dialer.go
Normal file
70
src/yggdrasil/dialer.go
Normal file
@ -0,0 +1,70 @@
|
||||
package yggdrasil
|
||||
|
||||
import (
|
||||
"encoding/hex"
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
|
||||
)
|
||||
|
||||
// Dialer represents an Yggdrasil connection dialer.
|
||||
type Dialer struct {
|
||||
core *Core
|
||||
}
|
||||
|
||||
// Dial opens a session to the given node. The first paramter should be "nodeid"
|
||||
// and the second parameter should contain a hexadecimal representation of the
|
||||
// target node ID.
|
||||
func (d *Dialer) Dial(network, address string) (Conn, error) {
|
||||
conn := Conn{
|
||||
mutex: &sync.RWMutex{},
|
||||
}
|
||||
nodeID := crypto.NodeID{}
|
||||
nodeMask := crypto.NodeID{}
|
||||
// Process
|
||||
switch network {
|
||||
case "nodeid":
|
||||
// A node ID was provided - we don't need to do anything special with it
|
||||
if tokens := strings.Split(address, "/"); len(tokens) == 2 {
|
||||
len, err := strconv.Atoi(tokens[1])
|
||||
if err != nil {
|
||||
return Conn{}, err
|
||||
}
|
||||
dest, err := hex.DecodeString(tokens[0])
|
||||
if err != nil {
|
||||
return Conn{}, err
|
||||
}
|
||||
copy(nodeID[:], dest)
|
||||
for idx := 0; idx < len; idx++ {
|
||||
nodeMask[idx/8] |= 0x80 >> byte(idx%8)
|
||||
}
|
||||
fmt.Println(nodeID)
|
||||
fmt.Println(nodeMask)
|
||||
} else {
|
||||
dest, err := hex.DecodeString(tokens[0])
|
||||
if err != nil {
|
||||
return Conn{}, err
|
||||
}
|
||||
copy(nodeID[:], dest)
|
||||
for i := range nodeMask {
|
||||
nodeMask[i] = 0xFF
|
||||
}
|
||||
}
|
||||
default:
|
||||
// An unexpected address type was given, so give up
|
||||
return Conn{}, errors.New("unexpected address type")
|
||||
}
|
||||
conn.core = d.core
|
||||
conn.nodeID = &nodeID
|
||||
conn.nodeMask = &nodeMask
|
||||
conn.core.router.doAdmin(func() {
|
||||
conn.startSearch()
|
||||
})
|
||||
conn.mutex.Lock()
|
||||
defer conn.mutex.Unlock()
|
||||
return conn, nil
|
||||
}
|
||||
@ -41,7 +41,6 @@ type router struct {
|
||||
in <-chan []byte // packets we received from the network, link to peer's "out"
|
||||
out func([]byte) // packets we're sending to the network, link to peer's "in"
|
||||
toRecv chan router_recvPacket // packets to handle via recvPacket()
|
||||
adapter adapterImplementation // TUN/TAP adapter
|
||||
recv chan<- []byte // place where the adapter pulls received packets from
|
||||
send <-chan []byte // place where the adapter puts outgoing packets
|
||||
reject chan<- RejectedPacket // place where we send error packets back to adapter
|
||||
@ -136,9 +135,6 @@ func (r *router) init(core *Core) {
|
||||
r.nodeinfo.setNodeInfo(r.core.config.Current.NodeInfo, r.core.config.Current.NodeInfoPrivacy)
|
||||
r.core.config.Mutex.RUnlock()
|
||||
r.cryptokey.init(r.core)
|
||||
if r.adapter != nil {
|
||||
r.adapter.Init(&r.core.config, r.core.log, send, recv, reject)
|
||||
}
|
||||
}
|
||||
|
||||
// Starts the mainLoop goroutine.
|
||||
|
||||
@ -289,9 +289,7 @@ func (ss *sessions) createSession(theirPermKey *crypto.BoxPubKey) *sessionInfo {
|
||||
sinfo.mySesPriv = *priv
|
||||
sinfo.myNonce = *crypto.NewBoxNonce()
|
||||
sinfo.theirMTU = 1280
|
||||
if ss.core.router.adapter != nil {
|
||||
sinfo.myMTU = uint16(ss.core.router.adapter.MTU())
|
||||
}
|
||||
sinfo.myMTU = 1280
|
||||
now := time.Now()
|
||||
sinfo.timeMutex.Lock()
|
||||
sinfo.time = now
|
||||
@ -480,11 +478,11 @@ func (ss *sessions) handlePing(ping *sessionPing) {
|
||||
ss.listenerMutex.Lock()
|
||||
if ss.listener != nil {
|
||||
conn := &Conn{
|
||||
core: ss.core,
|
||||
session: sinfo,
|
||||
sessionMutex: &sync.RWMutex{},
|
||||
nodeID: crypto.GetNodeID(&sinfo.theirPermPub),
|
||||
nodeMask: &crypto.NodeID{},
|
||||
core: ss.core,
|
||||
session: sinfo,
|
||||
mutex: &sync.RWMutex{},
|
||||
nodeID: crypto.GetNodeID(&sinfo.theirPermPub),
|
||||
nodeMask: &crypto.NodeID{},
|
||||
}
|
||||
for i := range conn.nodeMask {
|
||||
conn.nodeMask[i] = 0xFF
|
||||
|
||||
Loading…
Reference in New Issue
Block a user