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code cleanup

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This commit is contained in:
Arceliar 2018-06-12 17:50:08 -05:00
parent 9ce428af66
commit b006748da4
20 changed files with 143 additions and 161 deletions
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29
src/yggdrasil/admin.go
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@ -1,17 +1,19 @@
package yggdrasil package yggdrasil
import "net" import (
import "os" "encoding/hex"
import "encoding/hex" "encoding/json"
import "encoding/json" "errors"
import "errors" "fmt"
import "fmt" "net"
import "net/url" "net/url"
import "sort" "os"
import "strings" "sort"
import "strconv" "strconv"
import "sync/atomic" "strings"
import "time" "sync/atomic"
"time"
)
// TODO: Add authentication // TODO: Add authentication
@ -324,7 +326,6 @@ func (a *admin) handleRequest(conn net.Conn) {
// Send the response back // Send the response back
if err := encoder.Encode(&send); err != nil { if err := encoder.Encode(&send); err != nil {
// fmt.Println("Admin socket JSON encode error:", err)
return return
} }
@ -640,7 +641,7 @@ func (a *admin) getResponse_dot() []byte {
for _, info := range infos { for _, info := range infos {
keys = append(keys, info.key) keys = append(keys, info.key)
} }
// TODO sort // sort
less := func(i, j int) bool { less := func(i, j int) bool {
return keys[i] < keys[j] return keys[i] < keys[j]
} }

17
src/yggdrasil/core.go
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@ -1,12 +1,15 @@
package yggdrasil package yggdrasil
import "io/ioutil" import (
import "log" "encoding/hex"
import "regexp" "fmt"
import "net" "io/ioutil"
import "fmt" "log"
import "encoding/hex" "net"
import "yggdrasil/config" "regexp"
"yggdrasil/config"
)
// The Core object represents the Yggdrasil node. You should create a Core // The Core object represents the Yggdrasil node. You should create a Core
// object for each Yggdrasil node you plan to run. // object for each Yggdrasil node you plan to run.

13
src/yggdrasil/crypto.go
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@ -10,10 +10,13 @@ It also defines NodeID and TreeID as hashes of keys, and wraps hash functions
*/ */
import "crypto/rand" import (
import "crypto/sha512" "crypto/rand"
import "golang.org/x/crypto/ed25519" "crypto/sha512"
import "golang.org/x/crypto/nacl/box"
"golang.org/x/crypto/ed25519"
"golang.org/x/crypto/nacl/box"
)
//////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////
@ -121,7 +124,6 @@ func boxOpen(shared *boxSharedKey,
boxed []byte, boxed []byte,
nonce *boxNonce) ([]byte, bool) { nonce *boxNonce) ([]byte, bool) {
out := util_getBytes() out := util_getBytes()
//return append(out, boxed...), true // XXX HACK to test without encryption
s := (*[boxSharedKeyLen]byte)(shared) s := (*[boxSharedKeyLen]byte)(shared)
n := (*[boxNonceLen]byte)(nonce) n := (*[boxNonceLen]byte)(nonce)
unboxed, success := box.OpenAfterPrecomputation(out, boxed, n, s) unboxed, success := box.OpenAfterPrecomputation(out, boxed, n, s)
@ -134,7 +136,6 @@ func boxSeal(shared *boxSharedKey, unboxed []byte, nonce *boxNonce) ([]byte, *bo
} }
nonce.update() nonce.update()
out := util_getBytes() out := util_getBytes()
//return append(out, unboxed...), nonce // XXX HACK to test without encryption
s := (*[boxSharedKeyLen]byte)(shared) s := (*[boxSharedKeyLen]byte)(shared)
n := (*[boxNonceLen]byte)(nonce) n := (*[boxNonceLen]byte)(nonce)
boxed := box.SealAfterPrecomputation(out, unboxed, n, s) boxed := box.SealAfterPrecomputation(out, unboxed, n, s)

10
src/yggdrasil/dht.go
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@ -18,10 +18,10 @@ Slight changes *do* make it blackhole hard, bootstrapping isn't an easy problem
*/ */
import "sort" import (
import "time" "sort"
"time"
//import "fmt" )
// Number of DHT buckets, equal to the number of bits in a NodeID. // Number of DHT buckets, equal to the number of bits in a NodeID.
// Note that, in practice, nearly all of these will be empty. // Note that, in practice, nearly all of these will be empty.
@ -236,7 +236,6 @@ func (t *dht) nBuckets() int {
// Inserts a node into the DHT if they meet certain requirements. // Inserts a node into the DHT if they meet certain requirements.
// In particular, they must either be a peer that's not already in the DHT, or else be someone we should insert into the DHT (see: shouldInsert). // In particular, they must either be a peer that's not already in the DHT, or else be someone we should insert into the DHT (see: shouldInsert).
func (t *dht) insertIfNew(info *dhtInfo, isPeer bool) { func (t *dht) insertIfNew(info *dhtInfo, isPeer bool) {
//fmt.Println("DEBUG: dht insertIfNew:", info.getNodeID(), info.coords)
// Insert if no "other" entry already exists // Insert if no "other" entry already exists
nodeID := info.getNodeID() nodeID := info.getNodeID()
bidx, isOK := t.getBucketIndex(nodeID) bidx, isOK := t.getBucketIndex(nodeID)
@ -256,7 +255,6 @@ func (t *dht) insertIfNew(info *dhtInfo, isPeer bool) {
// Adds a node to the DHT, possibly removing another node in the process. // Adds a node to the DHT, possibly removing another node in the process.
func (t *dht) insert(info *dhtInfo, isPeer bool) { func (t *dht) insert(info *dhtInfo, isPeer bool) {
//fmt.Println("DEBUG: dht insert:", info.getNodeID(), info.coords)
// First update the time on this info // First update the time on this info
info.recv = time.Now() info.recv = time.Now()
// Get the bucket for this node // Get the bucket for this node

23
src/yggdrasil/icmpv6.go
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@ -9,11 +9,14 @@ package yggdrasil
// - Destination Unreachable messages, when a session prohibits // - Destination Unreachable messages, when a session prohibits
// incoming traffic // incoming traffic
import "net" import (
import "golang.org/x/net/ipv6" "encoding/binary"
import "golang.org/x/net/icmp" "errors"
import "encoding/binary" "net"
import "errors"
"golang.org/x/net/icmp"
"golang.org/x/net/ipv6"
)
type macAddress [6]byte type macAddress [6]byte
@ -239,10 +242,16 @@ func (i *icmpv6) create_icmpv6_tun(dst net.IP, src net.IP, mtype ipv6.ICMPType,
// when the host operating system generates an NDP request for any address in // when the host operating system generates an NDP request for any address in
// the fd00::/8 range, so that the operating system knows to route that traffic // the fd00::/8 range, so that the operating system knows to route that traffic
// to the Yggdrasil TAP adapter. // to the Yggdrasil TAP adapter.
// TODO: Make this respect the value of address_prefix in address.go
func (i *icmpv6) handle_ndp(in []byte) ([]byte, error) { func (i *icmpv6) handle_ndp(in []byte) ([]byte, error) {
// Ignore NDP requests for anything outside of fd00::/8 // Ignore NDP requests for anything outside of fd00::/8
if in[8] != 0xFD { var source address
copy(source[:], in[8:])
var snet subnet
copy(snet[:], in[8:])
switch {
case source.isValid():
case snet.isValid():
default:
return nil, errors.New("Not an NDP for fd00::/8") return nil, errors.New("Not an NDP for fd00::/8")
} }

23
src/yggdrasil/multicast.go
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@ -1,10 +1,12 @@
package yggdrasil package yggdrasil
import "net" import (
import "time" "fmt"
import "fmt" "net"
"time"
import "golang.org/x/net/ipv6" "golang.org/x/net/ipv6"
)
type multicast struct { type multicast struct {
core *Core core *Core
@ -37,11 +39,9 @@ func (m *multicast) start() error {
if err != nil { if err != nil {
return err return err
} }
//defer conn.Close() // Let it close on its own when the application exits
m.sock = ipv6.NewPacketConn(conn) m.sock = ipv6.NewPacketConn(conn)
if err = m.sock.SetControlMessage(ipv6.FlagDst, true); err != nil { if err = m.sock.SetControlMessage(ipv6.FlagDst, true); err != nil {
// Windows can't set this flag, so we need to handle it in other ways // Windows can't set this flag, so we need to handle it in other ways
//panic(err)
} }
go m.listen() go m.listen()
@ -95,8 +95,6 @@ func (m *multicast) announce() {
for { for {
for _, iface := range m.interfaces() { for _, iface := range m.interfaces() {
m.sock.JoinGroup(&iface, groupAddr) m.sock.JoinGroup(&iface, groupAddr)
//err := n.sock.JoinGroup(&iface, groupAddr)
//if err != nil { panic(err) }
addrs, err := iface.Addrs() addrs, err := iface.Addrs()
if err != nil { if err != nil {
panic(err) panic(err)
@ -133,8 +131,6 @@ func (m *multicast) listen() {
if err != nil { if err != nil {
panic(err) panic(err)
} }
//if rcm == nil { continue } // wat
//fmt.Println("DEBUG:", "packet from:", fromAddr.String())
if rcm != nil { if rcm != nil {
// Windows can't set the flag needed to return a non-nil value here // Windows can't set the flag needed to return a non-nil value here
// So only make these checks if we get something useful back // So only make these checks if we get something useful back
@ -149,19 +145,14 @@ func (m *multicast) listen() {
anAddr := string(bs[:nBytes]) anAddr := string(bs[:nBytes])
addr, err := net.ResolveTCPAddr("tcp6", anAddr) addr, err := net.ResolveTCPAddr("tcp6", anAddr)
if err != nil { if err != nil {
panic(err)
continue continue
} // Panic for testing, remove later }
from := fromAddr.(*net.UDPAddr) from := fromAddr.(*net.UDPAddr)
//fmt.Println("DEBUG:", "heard:", addr.IP.String(), "from:", from.IP.String())
if addr.IP.String() != from.IP.String() { if addr.IP.String() != from.IP.String() {
continue continue
} }
addr.Zone = from.Zone addr.Zone = from.Zone
saddr := addr.String() saddr := addr.String()
//if _, isIn := n.peers[saddr]; isIn { continue }
//n.peers[saddr] = struct{}{}
m.core.tcp.connect(saddr) m.core.tcp.connect(saddr)
//fmt.Println("DEBUG:", "added multicast peer:", saddr)
} }
} }

22
src/yggdrasil/peer.go
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@ -4,21 +4,20 @@ package yggdrasil
// Commented code should be removed // Commented code should be removed
// Live code should be better commented // Live code should be better commented
import "time" import (
import "sync" "sync"
import "sync/atomic" "sync/atomic"
"time"
//import "fmt" )
// The peers struct represents peers with an active connection. // The peers struct represents peers with an active connection.
// Incomping packets are passed to the corresponding peer, which handles them somehow. // Incomping packets are passed to the corresponding peer, which handles them somehow.
// In most cases, this involves passing the packet to the handler for outgoing traffic to another peer. // In most cases, this involves passing the packet to the handler for outgoing traffic to another peer.
// In other cases, it's link protocol traffic used to build the spanning tree, in which case this checks signatures and passes the message along to the switch. // In other cases, it's link protocol traffic used to build the spanning tree, in which case this checks signatures and passes the message along to the switch.
type peers struct { type peers struct {
core *Core core *Core
mutex sync.Mutex // Synchronize writes to atomic mutex sync.Mutex // Synchronize writes to atomic
ports atomic.Value //map[Port]*peer, use CoW semantics ports atomic.Value //map[Port]*peer, use CoW semantics
//ports map[Port]*peer
authMutex sync.RWMutex authMutex sync.RWMutex
allowedEncryptionPublicKeys map[boxPubKey]struct{} allowedEncryptionPublicKeys map[boxPubKey]struct{}
} }
@ -198,7 +197,7 @@ func (p *peer) linkLoop() {
// Called to handle incoming packets. // Called to handle incoming packets.
// Passes the packet to a handler for that packet type. // Passes the packet to a handler for that packet type.
func (p *peer) handlePacket(packet []byte) { func (p *peer) handlePacket(packet []byte) {
// TODO See comment in sendPacket about atomics technically being done wrong // FIXME this is off by stream padding and msg length overhead, should be done in tcp.go
atomic.AddUint64(&p.bytesRecvd, uint64(len(packet))) atomic.AddUint64(&p.bytesRecvd, uint64(len(packet)))
pType, pTypeLen := wire_decode_uint64(packet) pType, pTypeLen := wire_decode_uint64(packet)
if pTypeLen == 0 { if pTypeLen == 0 {
@ -307,8 +306,6 @@ func (p *peer) sendSwitchMsg() {
Sig: *sign(&p.core.sigPriv, bs), Sig: *sign(&p.core.sigPriv, bs),
}) })
packet := msg.encode() packet := msg.encode()
//p.core.log.Println("Encoded msg:", msg, "; bytes:", packet)
//fmt.Println("Encoded msg:", msg, "; bytes:", packet)
p.sendLinkPacket(packet) p.sendLinkPacket(packet)
} }
@ -319,7 +316,6 @@ func (p *peer) handleSwitchMsg(packet []byte) {
if !msg.decode(packet) { if !msg.decode(packet) {
return return
} }
//p.core.log.Println("Decoded msg:", msg, "; bytes:", packet)
if len(msg.Hops) < 1 { if len(msg.Hops) < 1 {
p.core.peers.removePeer(p.port) p.core.peers.removePeer(p.port)
} }

6
src/yggdrasil/release.go
View File

@ -2,8 +2,10 @@
package yggdrasil package yggdrasil
import "errors" import (
import "log" "errors"
"log"
)
// Starts the function profiler. This is only supported when built with // Starts the function profiler. This is only supported when built with
// '-tags build'. // '-tags build'.

17
src/yggdrasil/router.go
View File

@ -22,12 +22,12 @@ package yggdrasil
// The packet is passed to the session, which decrypts it, router.recvPacket // The packet is passed to the session, which decrypts it, router.recvPacket
// The router then runs some sanity checks before passing it to the tun // The router then runs some sanity checks before passing it to the tun
import "time" import (
import "golang.org/x/net/icmp" "time"
import "golang.org/x/net/ipv6"
//import "fmt" "golang.org/x/net/icmp"
//import "net" "golang.org/x/net/ipv6"
)
// The router struct has channels to/from the tun/tap device and a self peer (0), which is how messages are passed between this node and the peers/switch layer. // The router struct has channels to/from the tun/tap device and a self peer (0), which is how messages are passed between this node and the peers/switch layer.
// The router's mainLoop goroutine is responsible for managing all information related to the dht, searches, and crypto sessions. // The router's mainLoop goroutine is responsible for managing all information related to the dht, searches, and crypto sessions.
@ -101,7 +101,6 @@ func (r *router) mainLoop() {
// Any periodic maintenance stuff goes here // Any periodic maintenance stuff goes here
r.core.switchTable.doMaintenance() r.core.switchTable.doMaintenance()
r.core.dht.doMaintenance() r.core.dht.doMaintenance()
//r.core.peers.sendSwitchMsgs() // FIXME debugging
util_getBytes() // To slowly drain things util_getBytes() // To slowly drain things
} }
case f := <-r.admin: case f := <-r.admin:
@ -243,7 +242,6 @@ func (r *router) sendPacket(bs []byte) {
// Checks that the IP address is correct (matches the session) and passes the packet to the tun/tap. // Checks that the IP address is correct (matches the session) and passes the packet to the tun/tap.
func (r *router) recvPacket(bs []byte, theirAddr *address, theirSubnet *subnet) { func (r *router) recvPacket(bs []byte, theirAddr *address, theirSubnet *subnet) {
// Note: called directly by the session worker, not the router goroutine // Note: called directly by the session worker, not the router goroutine
//fmt.Println("Recv packet")
if len(bs) < 24 { if len(bs) < 24 {
util_putBytes(bs) util_putBytes(bs)
return return
@ -274,7 +272,7 @@ func (r *router) handleIn(packet []byte) {
r.handleTraffic(packet) r.handleTraffic(packet)
case wire_ProtocolTraffic: case wire_ProtocolTraffic:
r.handleProto(packet) r.handleProto(packet)
default: /*panic("Should not happen in testing") ;*/ default:
} }
} }
@ -290,7 +288,6 @@ func (r *router) handleTraffic(packet []byte) {
if !isIn { if !isIn {
return return
} }
//go func () { sinfo.recv<-&p }()
sinfo.recv <- &p sinfo.recv <- &p
} }
@ -303,7 +300,6 @@ func (r *router) handleProto(packet []byte) {
} }
// Now try to open the payload // Now try to open the payload
var sharedKey *boxSharedKey var sharedKey *boxSharedKey
//var theirPermPub *boxPubKey
if p.ToKey == r.core.boxPub { if p.ToKey == r.core.boxPub {
// Try to open using our permanent key // Try to open using our permanent key
sharedKey = r.core.sessions.getSharedKey(&r.core.boxPriv, &p.FromKey) sharedKey = r.core.sessions.getSharedKey(&r.core.boxPriv, &p.FromKey)
@ -321,7 +317,6 @@ func (r *router) handleProto(packet []byte) {
if bsTypeLen == 0 { if bsTypeLen == 0 {
return return
} }
//fmt.Println("RECV bytes:", bs)
switch bsType { switch bsType {
case wire_SessionPing: case wire_SessionPing:
r.handlePing(bs, &p.FromKey) r.handlePing(bs, &p.FromKey)

8
src/yggdrasil/search.go
View File

@ -11,10 +11,10 @@ package yggdrasil
// A new search packet is sent immediately after receiving a response // A new search packet is sent immediately after receiving a response
// A new search packet is sent periodically, once per second, in case a packet was dropped (this slowly causes the search to become parallel if the search doesn't timeout but also doesn't finish within 1 second for whatever reason) // A new search packet is sent periodically, once per second, in case a packet was dropped (this slowly causes the search to become parallel if the search doesn't timeout but also doesn't finish within 1 second for whatever reason)
import "sort" import (
import "time" "sort"
"time"
//import "fmt" )
// This defines the maximum number of dhtInfo that we keep track of for nodes to query in an ongoing search. // This defines the maximum number of dhtInfo that we keep track of for nodes to query in an ongoing search.
const search_MAX_SEARCH_SIZE = 16 const search_MAX_SEARCH_SIZE = 16

2
src/yggdrasil/session.go
View File

@ -456,7 +456,6 @@ func (sinfo *sessionInfo) doRecv(p *wire_trafficPacket) {
} }
if newMTU < sinfo.myMTU { if newMTU < sinfo.myMTU {
sinfo.myMTU = newMTU sinfo.myMTU = newMTU
//sinfo.core.log.Println("DEBUG set MTU to:", sinfo.myMTU)
sinfo.core.sessions.sendPingPong(sinfo, false) sinfo.core.sessions.sendPingPong(sinfo, false)
sinfo.mtuTime = time.Now() sinfo.mtuTime = time.Now()
sinfo.wasMTUFixed = true sinfo.wasMTUFixed = true
@ -470,7 +469,6 @@ func (sinfo *sessionInfo) doRecv(p *wire_trafficPacket) {
if time.Since(sinfo.mtuTime) > time.Minute { if time.Since(sinfo.mtuTime) > time.Minute {
sinfo.myMTU = uint16(sinfo.core.tun.mtu) sinfo.myMTU = uint16(sinfo.core.tun.mtu)
sinfo.mtuTime = time.Now() sinfo.mtuTime = time.Now()
//sinfo.core.log.Println("DEBUG: Reset MTU to:", sinfo.myMTU)
} }
} }
go func() { sinfo.core.router.admin <- fixSessionMTU }() go func() { sinfo.core.router.admin <- fixSessionMTU }()

6
src/yggdrasil/signature.go
View File

@ -3,8 +3,10 @@ package yggdrasil
// This is where we record which signatures we've previously checked // This is where we record which signatures we've previously checked
// It's so we can avoid needlessly checking them again // It's so we can avoid needlessly checking them again
import "sync" import (
import "time" "sync"
"time"
)
// This keeps track of what signatures have already been checked. // This keeps track of what signatures have already been checked.
// It's used to skip expensive crypto operations, given that many signatures are likely to be the same for the average node's peers. // It's used to skip expensive crypto operations, given that many signatures are likely to be the same for the average node's peers.

22
src/yggdrasil/switch.go
View File

@ -11,12 +11,12 @@ package yggdrasil
// TODO? use a pre-computed lookup table (python version had this) // TODO? use a pre-computed lookup table (python version had this)
// A little annoying to do with constant changes from backpressure // A little annoying to do with constant changes from backpressure
import "time" import (
import "sort" "sort"
import "sync" "sync"
import "sync/atomic" "sync/atomic"
"time"
//import "fmt" )
const switch_timeout = time.Minute const switch_timeout = time.Minute
const switch_updateInterval = switch_timeout / 2 const switch_updateInterval = switch_timeout / 2
@ -201,25 +201,19 @@ func (t *switchTable) cleanRoot() {
// Get rid of the root if it looks like its timed out // Get rid of the root if it looks like its timed out
now := time.Now() now := time.Now()
doUpdate := false doUpdate := false
//fmt.Println("DEBUG clean root:", now.Sub(t.time))
if now.Sub(t.time) > switch_timeout { if now.Sub(t.time) > switch_timeout {
//fmt.Println("root timed out", t.data.locator)
dropped := t.data.peers[t.parent] dropped := t.data.peers[t.parent]
dropped.time = t.time dropped.time = t.time
t.drop[t.data.locator.root] = t.data.locator.tstamp t.drop[t.data.locator.root] = t.data.locator.tstamp
doUpdate = true doUpdate = true
//t.core.log.Println("DEBUG: switch root timeout", len(t.drop))
} }
// Or, if we're better than our root, root ourself // Or, if we're better than our root, root ourself
if firstIsBetter(&t.key, &t.data.locator.root) { if firstIsBetter(&t.key, &t.data.locator.root) {
//fmt.Println("root is worse than us", t.data.locator.Root)
doUpdate = true doUpdate = true
//t.core.log.Println("DEBUG: switch root replace with self", t.data.locator.Root)
} }
// Or, if we are the root, possibly update our timestamp // Or, if we are the root, possibly update our timestamp
if t.data.locator.root == t.key && if t.data.locator.root == t.key &&
now.Sub(t.time) > switch_updateInterval { now.Sub(t.time) > switch_updateInterval {
//fmt.Println("root is self and old, updating", t.data.locator.Root)
doUpdate = true doUpdate = true
} }
if doUpdate { if doUpdate {
@ -421,15 +415,12 @@ func (t *switchTable) unlockedHandleMsg(msg *switchMsg, fromPort switchPort) {
case t.core.router.reset <- struct{}{}: case t.core.router.reset <- struct{}{}:
default: default:
} }
//t.core.log.Println("Switch update:", msg.locator.root, msg.locator.tstamp, msg.locator.coords)
//fmt.Println("Switch update:", msg.Locator.Root, msg.Locator.Tstamp, msg.Locator.Coords)
} }
if t.data.locator.tstamp != sender.locator.tstamp { if t.data.locator.tstamp != sender.locator.tstamp {
t.time = now t.time = now
} }
t.data.locator = sender.locator t.data.locator = sender.locator
t.parent = sender.port t.parent = sender.port
//t.core.log.Println("Switch update:", msg.Locator.Root, msg.Locator.Tstamp, msg.Locator.Coords)
t.core.peers.sendSwitchMsgs() t.core.peers.sendSwitchMsgs()
} }
if doUpdate { if doUpdate {
@ -504,6 +495,5 @@ func (t *switchTable) lookup(dest []byte) switchPort {
bestCost = cost bestCost = cost
} }
} }
//t.core.log.Println("DEBUG: sending to", best, "cost", bestCost)
return best return best
} }

22
src/yggdrasil/tcp.go
View File

@ -14,13 +14,16 @@ package yggdrasil
// It involves exchanging version numbers and crypto keys // It involves exchanging version numbers and crypto keys
// See version.go for version metadata format // See version.go for version metadata format
import "net" import (
import "time" "errors"
import "errors" "fmt"
import "sync" "net"
import "sync/atomic" "sync"
import "fmt" "sync/atomic"
import "golang.org/x/net/proxy" "time"
"golang.org/x/net/proxy"
)
const tcp_msgSize = 2048 + 65535 // TODO figure out what makes sense const tcp_msgSize = 2048 + 65535 // TODO figure out what makes sense
@ -211,7 +214,7 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
} }
if equiv(info.box[:], iface.core.boxPub[:]) { if equiv(info.box[:], iface.core.boxPub[:]) {
return return
} // testing }
if equiv(info.sig[:], iface.core.sigPub[:]) { if equiv(info.sig[:], iface.core.sigPub[:]) {
return return
} }
@ -286,7 +289,6 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
timer.Reset(timerInterval) timer.Reset(timerInterval)
select { select {
case _ = <-timer.C: case _ = <-timer.C:
//iface.core.log.Println("DEBUG: sending keep-alive:", sock.RemoteAddr().String())
send(nil) // TCP keep-alive traffic send(nil) // TCP keep-alive traffic
case msg := <-p.linkOut: case msg := <-p.linkOut:
send(msg) send(msg)
@ -352,14 +354,12 @@ func (iface *tcpInterface) reader(sock net.Conn, in func([]byte)) {
sock.SetReadDeadline(timeout) sock.SetReadDeadline(timeout)
n, err := sock.Read(bs[len(frag):]) n, err := sock.Read(bs[len(frag):])
if err != nil || n == 0 { if err != nil || n == 0 {
// iface.core.log.Println(err)
break break
} }
frag = bs[:len(frag)+n] frag = bs[:len(frag)+n]
for { for {
msg, ok, err := tcp_chop_msg(&frag) msg, ok, err := tcp_chop_msg(&frag)
if err != nil { if err != nil {
// iface.core.log.Println(err)
return return
} }
if !ok { if !ok {

8
src/yggdrasil/tun.go
View File

@ -2,8 +2,10 @@ package yggdrasil
// This manages the tun driver to send/recv packets to/from applications // This manages the tun driver to send/recv packets to/from applications
import "github.com/songgao/packets/ethernet" import (
import "github.com/yggdrasil-network/water" "github.com/songgao/packets/ethernet"
"github.com/yggdrasil-network/water"
)
const tun_IPv6_HEADER_LENGTH = 40 const tun_IPv6_HEADER_LENGTH = 40
const tun_ETHER_HEADER_LENGTH = 14 const tun_ETHER_HEADER_LENGTH = 14
@ -127,7 +129,7 @@ func (tun *tunDevice) read() error {
// Closes the TUN/TAP adapter. This is only usually called when the Yggdrasil // Closes the TUN/TAP adapter. This is only usually called when the Yggdrasil
// process stops. Typically this operation will happen quickly, but on macOS // process stops. Typically this operation will happen quickly, but on macOS
// it can block until a read operation is completed. // it can block until a read operation is completed.
func (tun *tunDevice) close() error { func (tun *tunDevice) close() error {
if tun.iface == nil { if tun.iface == nil {
return nil return nil

20
src/yggdrasil/tun_bsd.go
View File

@ -2,16 +2,18 @@
package yggdrasil package yggdrasil
import "unsafe" import (
import "syscall" "encoding/binary"
import "strings" "os/exec"
import "strconv" "strconv"
import "encoding/binary" "strings"
import "os/exec" "syscall"
"unsafe"
import "golang.org/x/sys/unix" "golang.org/x/sys/unix"
import "github.com/yggdrasil-network/water" "github.com/yggdrasil-network/water"
)
const SIOCSIFADDR_IN6 = (0x80000000) | ((288 & 0x1fff) << 16) | uint32(byte('i'))<<8 | 12 const SIOCSIFADDR_IN6 = (0x80000000) | ((288 & 0x1fff) << 16) | uint32(byte('i'))<<8 | 12
@ -74,7 +76,7 @@ type in6_ifreq_lifetime struct {
// OpenBSD, NetBSD) an attempt is made to set the adapter properties by using // OpenBSD, NetBSD) an attempt is made to set the adapter properties by using
// a system socket and making syscalls to the kernel. This is not refined though // a system socket and making syscalls to the kernel. This is not refined though
// and often doesn't work (if at all), therefore if a call fails, it resorts // and often doesn't work (if at all), therefore if a call fails, it resorts
// to calling "ifconfig" instead. // to calling "ifconfig" instead.
func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error { func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
var config water.Config var config water.Config
if ifname[:4] == "auto" { if ifname[:4] == "auto" {

17
src/yggdrasil/tun_darwin.go
View File

@ -2,13 +2,16 @@ package yggdrasil
// The darwin platform specific tun parts // The darwin platform specific tun parts
import "unsafe" import (
import "strings" "encoding/binary"
import "strconv" "strconv"
import "encoding/binary" "strings"
import "golang.org/x/sys/unix" "unsafe"
import water "github.com/yggdrasil-network/water" "golang.org/x/sys/unix"
water "github.com/yggdrasil-network/water"
)
// Sane defaults for the Darwin/macOS platform. The "default" options may be // Sane defaults for the Darwin/macOS platform. The "default" options may be
// may be replaced by the running configuration. // may be replaced by the running configuration.
@ -69,7 +72,7 @@ type ifreq struct {
} }
// Sets the IPv6 address of the utun adapter. On Darwin/macOS this is done using // Sets the IPv6 address of the utun adapter. On Darwin/macOS this is done using
// a system socket and making direct syscalls to the kernel. // a system socket and making direct syscalls to the kernel.
func (tun *tunDevice) setupAddress(addr string) error { func (tun *tunDevice) setupAddress(addr string) error {
var fd int var fd int
var err error var err error

12
src/yggdrasil/tun_linux.go
View File

@ -2,13 +2,15 @@ package yggdrasil
// The linux platform specific tun parts // The linux platform specific tun parts
import "errors" import (
import "fmt" "errors"
import "net" "fmt"
"net"
import water "github.com/yggdrasil-network/water" "github.com/docker/libcontainer/netlink"
import "github.com/docker/libcontainer/netlink" water "github.com/yggdrasil-network/water"
)
// Sane defaults for the Linux platform. The "default" options may be // Sane defaults for the Linux platform. The "default" options may be
// may be replaced by the running configuration. // may be replaced by the running configuration.

11
src/yggdrasil/tun_windows.go
View File

@ -1,9 +1,12 @@
package yggdrasil package yggdrasil
import water "github.com/yggdrasil-network/water" import (
import "os/exec" "fmt"
import "strings" "os/exec"
import "fmt" "strings"
water "github.com/yggdrasil-network/water"
)
// This is to catch Windows platforms // This is to catch Windows platforms

16
src/yggdrasil/util.go
View File

@ -4,8 +4,6 @@ package yggdrasil
import "runtime" import "runtime"
//import "sync"
// A wrapper around runtime.Gosched() so it doesn't need to be imported elsewhere. // A wrapper around runtime.Gosched() so it doesn't need to be imported elsewhere.
func util_yield() { func util_yield() {
runtime.Gosched() runtime.Gosched()
@ -21,20 +19,6 @@ func util_unlockthread() {
runtime.UnlockOSThread() runtime.UnlockOSThread()
} }
/* Used previously, but removed because casting to an interface{} allocates...
var byteStore sync.Pool = sync.Pool{
New: func () interface{} { return []byte(nil) },
}
func util_getBytes() []byte {
return byteStore.Get().([]byte)[:0]
}
func util_putBytes(bs []byte) {
byteStore.Put(bs) // This is the part that allocates
}
*/
// This is used to buffer recently used slices of bytes, to prevent allocations in the hot loops. // This is used to buffer recently used slices of bytes, to prevent allocations in the hot loops.
// It's used like a sync.Pool, but with a fixed size and typechecked without type casts to/from interface{} (which were making the profiles look ugly). // It's used like a sync.Pool, but with a fixed size and typechecked without type casts to/from interface{} (which were making the profiles look ugly).
var byteStore chan []byte var byteStore chan []byte