mirror of
https://github.com/yggdrasil-network/yggdrasil-go.git
synced 2025-04-29 06:35:07 +03:00
(broken state) WIP on tuntap
This commit is contained in:
Arceliar
parent
f1c37f8440
commit
0cff56fcc1
6 changed files with 524 additions and 547 deletions
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@ -1,227 +0,0 @@
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package tuntap
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import (
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"bytes"
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"errors"
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"time"
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"github.com/Arceliar/phony"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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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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"golang.org/x/net/icmp"
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"golang.org/x/net/ipv6"
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)
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const tunConnTimeout = 2 * time.Minute
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type tunConn struct {
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phony.Inbox
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tun *TunAdapter
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conn *yggdrasil.Conn
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addr address.Address
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snet address.Subnet
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stop chan struct{}
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alive *time.Timer // From calling time.AfterFunc
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}
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func (s *tunConn) close() {
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s.tun.Act(s, s._close_from_tun)
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}
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func (s *tunConn) _close_from_tun() {
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go s.conn.Close() // Just in case it blocks on actor operations
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delete(s.tun.addrToConn, s.addr)
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delete(s.tun.subnetToConn, s.snet)
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func() {
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defer func() { recover() }()
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close(s.stop) // Closes reader/writer goroutines
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}()
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}
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func (s *tunConn) _read(bs []byte) (err error) {
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select {
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case <-s.stop:
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err = errors.New("session was already closed")
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return
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default:
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}
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if len(bs) == 0 {
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err = errors.New("read packet with 0 size")
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return
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}
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ipv4 := len(bs) > 20 && bs[0]&0xf0 == 0x40
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ipv6 := len(bs) > 40 && bs[0]&0xf0 == 0x60
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isCGA := true
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// Check source addresses
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switch {
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case ipv6 && bs[8] == 0x02 && bytes.Equal(s.addr[:16], bs[8:24]): // source
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case ipv6 && bs[8] == 0x03 && bytes.Equal(s.snet[:8], bs[8:16]): // source
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default:
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isCGA = false
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}
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// Check destination addresses
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switch {
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case ipv6 && bs[24] == 0x02 && bytes.Equal(s.tun.addr[:16], bs[24:40]): // destination
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case ipv6 && bs[24] == 0x03 && bytes.Equal(s.tun.subnet[:8], bs[24:32]): // destination
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default:
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isCGA = false
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}
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// Decide how to handle the packet
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var skip bool
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switch {
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case isCGA: // Allowed
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case s.tun.ckr.isEnabled() && (ipv4 || ipv6):
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var srcAddr address.Address
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var dstAddr address.Address
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var addrlen int
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if ipv4 {
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copy(srcAddr[:], bs[12:16])
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copy(dstAddr[:], bs[16:20])
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addrlen = 4
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}
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if ipv6 {
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copy(srcAddr[:], bs[8:24])
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copy(dstAddr[:], bs[24:40])
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addrlen = 16
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}
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if !s.tun.ckr.isValidLocalAddress(dstAddr, addrlen) {
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// The destination address isn't in our CKR allowed range
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skip = true
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} else if key, err := s.tun.ckr.getPublicKeyForAddress(srcAddr, addrlen); err == nil {
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if *s.conn.RemoteAddr().(*crypto.BoxPubKey) == key {
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// This is the one allowed CKR case, where source and destination addresses are both good
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} else {
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// The CKR key associated with this address doesn't match the sender's NodeID
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skip = true
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}
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} else {
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// We have no CKR route for this source address
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skip = true
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}
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default:
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skip = true
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}
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if skip {
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err = errors.New("address not allowed")
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return
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}
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s.tun.writer.writeFrom(s, bs)
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s.stillAlive()
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return
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}
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func (s *tunConn) writeFrom(from phony.Actor, bs []byte) {
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s.Act(from, func() {
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s._write(bs)
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})
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}
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func (s *tunConn) _write(bs []byte) (err error) {
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select {
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case <-s.stop:
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err = errors.New("session was already closed")
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return
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default:
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}
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v4 := len(bs) > 20 && bs[0]&0xf0 == 0x40
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v6 := len(bs) > 40 && bs[0]&0xf0 == 0x60
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isCGA := true
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// Check source addresses
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switch {
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case v6 && bs[8] == 0x02 && bytes.Equal(s.tun.addr[:16], bs[8:24]): // source
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case v6 && bs[8] == 0x03 && bytes.Equal(s.tun.subnet[:8], bs[8:16]): // source
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default:
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isCGA = false
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}
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// Check destiantion addresses
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switch {
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case v6 && bs[24] == 0x02 && bytes.Equal(s.addr[:16], bs[24:40]): // destination
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case v6 && bs[24] == 0x03 && bytes.Equal(s.snet[:8], bs[24:32]): // destination
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default:
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isCGA = false
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}
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// Decide how to handle the packet
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var skip bool
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switch {
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case isCGA: // Allowed
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case s.tun.ckr.isEnabled() && (v4 || v6):
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var srcAddr address.Address
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var dstAddr address.Address
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var addrlen int
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if v4 {
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copy(srcAddr[:], bs[12:16])
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copy(dstAddr[:], bs[16:20])
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addrlen = 4
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}
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if v6 {
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copy(srcAddr[:], bs[8:24])
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copy(dstAddr[:], bs[24:40])
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addrlen = 16
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}
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if !s.tun.ckr.isValidLocalAddress(srcAddr, addrlen) {
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// The source address isn't in our CKR allowed range
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skip = true
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} else if key, err := s.tun.ckr.getPublicKeyForAddress(dstAddr, addrlen); err == nil {
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if *s.conn.RemoteAddr().(*crypto.BoxPubKey) == key {
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// This is the one allowed CKR case, where source and destination addresses are both good
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} else {
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// The CKR key associated with this address doesn't match the sender's NodeID
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skip = true
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}
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} else {
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// We have no CKR route for this destination address... why do we have the packet in the first place?
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skip = true
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}
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default:
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skip = true
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}
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if skip {
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err = errors.New("address not allowed")
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return
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}
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msg := yggdrasil.FlowKeyMessage{
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FlowKey: util.GetFlowKey(bs),
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Message: bs,
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}
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s.conn.WriteFrom(s, msg, func(err error) {
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if err == nil {
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// No point in wasting resources to send back an error if there was none
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return
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}
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s.Act(s.conn, func() {
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if e, eok := err.(yggdrasil.ConnError); !eok {
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if e.Closed() {
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s.tun.log.Debugln(s.conn.String(), "TUN/TAP generic write debug:", err)
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} else {
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s.tun.log.Errorln(s.conn.String(), "TUN/TAP generic write error:", err)
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}
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} else if e.PacketTooBig() {
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// TODO: This currently isn't aware of IPv4 for CKR
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ptb := &icmp.PacketTooBig{
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MTU: int(e.PacketMaximumSize()),
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Data: bs[:900],
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}
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if packet, err := CreateICMPv6(bs[8:24], bs[24:40], ipv6.ICMPTypePacketTooBig, 0, ptb); err == nil {
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s.tun.writer.writeFrom(s, packet)
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}
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} else {
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if e.Closed() {
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s.tun.log.Debugln(s.conn.String(), "TUN/TAP conn write debug:", err)
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} else {
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s.tun.log.Errorln(s.conn.String(), "TUN/TAP conn write error:", err)
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}
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}
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})
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})
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s.stillAlive()
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return
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}
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func (s *tunConn) stillAlive() {
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if s.alive != nil {
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s.alive.Stop()
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}
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s.alive = time.AfterFunc(tunConnTimeout, s.close)
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}
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@ -1,12 +1,12 @@
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package tuntap
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import (
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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//"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
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//"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
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"golang.org/x/net/icmp"
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"golang.org/x/net/ipv6"
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//"golang.org/x/net/icmp"
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//"golang.org/x/net/ipv6"
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"github.com/Arceliar/phony"
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)
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@ -84,139 +84,142 @@ func (tun *TunAdapter) handlePacketFrom(from phony.Actor, packet []byte, err err
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// does the work of reading a packet and sending it to the correct tunConn
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func (tun *TunAdapter) _handlePacket(recvd []byte, err error) {
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if err != nil {
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tun.log.Errorln("TUN iface read error:", err)
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return
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}
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// Offset the buffer from now on so that we can ignore ethernet frames if
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// they are present
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bs := recvd[:]
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// Check if the packet is long enough to detect if it's an ICMP packet or not
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if len(bs) < 7 {
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tun.log.Traceln("TUN iface read undersized unknown packet, length:", len(bs))
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return
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}
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// From the IP header, work out what our source and destination addresses
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// and node IDs are. We will need these in order to work out where to send
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// the packet
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var dstAddr address.Address
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var dstSnet address.Subnet
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var addrlen int
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n := len(bs)
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// Check the IP protocol - if it doesn't match then we drop the packet and
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// do nothing with it
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if bs[0]&0xf0 == 0x60 {
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// Check if we have a fully-sized IPv6 header
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if len(bs) < 40 {
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tun.log.Traceln("TUN iface read undersized ipv6 packet, length:", len(bs))
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panic("TODO")
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/*
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if err != nil {
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tun.log.Errorln("TUN iface read error:", err)
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return
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}
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// Check the packet size
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if n-tun_IPv6_HEADER_LENGTH != 256*int(bs[4])+int(bs[5]) {
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// Offset the buffer from now on so that we can ignore ethernet frames if
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// they are present
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bs := recvd[:]
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// Check if the packet is long enough to detect if it's an ICMP packet or not
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if len(bs) < 7 {
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tun.log.Traceln("TUN iface read undersized unknown packet, length:", len(bs))
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return
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}
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// IPv6 address
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addrlen = 16
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copy(dstAddr[:addrlen], bs[24:])
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copy(dstSnet[:addrlen/2], bs[24:])
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} else if bs[0]&0xf0 == 0x40 {
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// Check if we have a fully-sized IPv4 header
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if len(bs) < 20 {
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tun.log.Traceln("TUN iface read undersized ipv4 packet, length:", len(bs))
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// From the IP header, work out what our source and destination addresses
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// and node IDs are. We will need these in order to work out where to send
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// the packet
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var dstAddr address.Address
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var dstSnet address.Subnet
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var addrlen int
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n := len(bs)
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// Check the IP protocol - if it doesn't match then we drop the packet and
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// do nothing with it
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if bs[0]&0xf0 == 0x60 {
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// Check if we have a fully-sized IPv6 header
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if len(bs) < 40 {
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tun.log.Traceln("TUN iface read undersized ipv6 packet, length:", len(bs))
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return
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}
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// Check the packet size
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if n-tun_IPv6_HEADER_LENGTH != 256*int(bs[4])+int(bs[5]) {
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return
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}
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// IPv6 address
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addrlen = 16
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copy(dstAddr[:addrlen], bs[24:])
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copy(dstSnet[:addrlen/2], bs[24:])
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} else if bs[0]&0xf0 == 0x40 {
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// Check if we have a fully-sized IPv4 header
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if len(bs) < 20 {
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tun.log.Traceln("TUN iface read undersized ipv4 packet, length:", len(bs))
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return
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}
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// Check the packet size
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if n != 256*int(bs[2])+int(bs[3]) {
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return
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}
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// IPv4 address
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addrlen = 4
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copy(dstAddr[:addrlen], bs[16:])
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} else {
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// Unknown address length or protocol, so drop the packet and ignore it
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tun.log.Traceln("Unknown packet type, dropping")
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return
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}
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// Check the packet size
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if n != 256*int(bs[2])+int(bs[3]) {
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return
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if tun.ckr.isEnabled() {
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if addrlen != 16 || (!dstAddr.IsValid() && !dstSnet.IsValid()) {
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if key, err := tun.ckr.getPublicKeyForAddress(dstAddr, addrlen); err == nil {
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// A public key was found, get the node ID for the search
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panic("TODO")
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//dstNodeID := crypto.GetNodeID(&key)
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//dstAddr = *address.AddrForNodeID(dstNodeID)
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//dstSnet = *address.SubnetForNodeID(dstNodeID)
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addrlen = 16
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}
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}
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}
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// IPv4 address
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addrlen = 4
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copy(dstAddr[:addrlen], bs[16:])
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} else {
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// Unknown address length or protocol, so drop the packet and ignore it
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tun.log.Traceln("Unknown packet type, dropping")
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return
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}
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if tun.ckr.isEnabled() {
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if addrlen != 16 || (!dstAddr.IsValid() && !dstSnet.IsValid()) {
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if /*key*/ _, err := tun.ckr.getPublicKeyForAddress(dstAddr, addrlen); err == nil {
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// A public key was found, get the node ID for the search
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panic("TODO")
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//dstNodeID := crypto.GetNodeID(&key)
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//dstAddr = *address.AddrForNodeID(dstNodeID)
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//dstSnet = *address.SubnetForNodeID(dstNodeID)
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addrlen = 16
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// Couldn't find this node's ygg IP
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dlen := len(bs)
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if dlen > 900 {
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dlen = 900
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}
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ptb := &icmp.DstUnreach{
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Data: bs[:dlen],
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}
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if packet, err := CreateICMPv6(bs[8:24], bs[24:40], ipv6.ICMPTypeDestinationUnreachable, 0, ptb); err == nil {
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tun.writer.writeFrom(nil, packet)
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}
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return
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}
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}
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if addrlen != 16 || (!dstAddr.IsValid() && !dstSnet.IsValid()) {
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// Couldn't find this node's ygg IP
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dlen := len(bs)
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if dlen > 900 {
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dlen = 900
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}
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ptb := &icmp.DstUnreach{
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Data: bs[:dlen],
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}
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if packet, err := CreateICMPv6(bs[8:24], bs[24:40], ipv6.ICMPTypeDestinationUnreachable, 0, ptb); err == nil {
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tun.writer.writeFrom(nil, packet)
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}
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return
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}
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// Do we have an active connection for this node address?
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var dstString string
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session, isIn := tun.addrToConn[dstAddr]
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if !isIn || session == nil {
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session, isIn = tun.subnetToConn[dstSnet]
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// Do we have an active connection for this node address?
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var dstString string
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session, isIn := tun.addrToConn[dstAddr]
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if !isIn || session == nil {
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// Neither an address nor a subnet mapping matched, therefore populate
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// the node ID and mask to commence a search
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panic("TODO")
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if dstAddr.IsValid() {
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//dstString = dstAddr.GetNodeIDLengthString()
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} else {
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//dstString = dstSnet.GetNodeIDLengthString()
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session, isIn = tun.subnetToConn[dstSnet]
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if !isIn || session == nil {
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// Neither an address nor a subnet mapping matched, therefore populate
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// the node ID and mask to commence a search
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panic("TODO")
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if dstAddr.IsValid() {
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//dstString = dstAddr.GetNodeIDLengthString()
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} else {
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//dstString = dstSnet.GetNodeIDLengthString()
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}
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}
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}
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}
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// If we don't have a connection then we should open one
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if !isIn || session == nil {
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// Check we haven't been given empty node ID, really this shouldn't ever
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// happen but just to be sure...
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if dstString == "" {
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panic("Given empty dstString - this shouldn't happen")
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// If we don't have a connection then we should open one
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if !isIn || session == nil {
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// Check we haven't been given empty node ID, really this shouldn't ever
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// happen but just to be sure...
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if dstString == "" {
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panic("Given empty dstString - this shouldn't happen")
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}
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_, known := tun.dials[dstString]
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tun.dials[dstString] = append(tun.dials[dstString], bs)
|
||||
for len(tun.dials[dstString]) > 32 {
|
||||
tun.dials[dstString] = tun.dials[dstString][1:]
|
||||
}
|
||||
if !known {
|
||||
go func() {
|
||||
conn, err := tun.dialer.Dial("nodeid", dstString)
|
||||
tun.Act(nil, func() {
|
||||
packets := tun.dials[dstString]
|
||||
delete(tun.dials, dstString)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// We've been given a connection so prepare the session wrapper
|
||||
var tc *tunConn
|
||||
if tc, err = tun._wrap(conn.(*yggdrasil.Conn)); err != nil {
|
||||
// Something went wrong when storing the connection, typically that
|
||||
// something already exists for this address or subnet
|
||||
tun.log.Debugln("TUN iface wrap:", err)
|
||||
return
|
||||
}
|
||||
for _, packet := range packets {
|
||||
tc.writeFrom(nil, packet)
|
||||
}
|
||||
})
|
||||
}()
|
||||
}
|
||||
}
|
||||
_, known := tun.dials[dstString]
|
||||
tun.dials[dstString] = append(tun.dials[dstString], bs)
|
||||
for len(tun.dials[dstString]) > 32 {
|
||||
tun.dials[dstString] = tun.dials[dstString][1:]
|
||||
// If we have a connection now, try writing to it
|
||||
if isIn && session != nil {
|
||||
session.writeFrom(tun, bs)
|
||||
}
|
||||
if !known {
|
||||
go func() {
|
||||
conn, err := tun.dialer.Dial("nodeid", dstString)
|
||||
tun.Act(nil, func() {
|
||||
packets := tun.dials[dstString]
|
||||
delete(tun.dials, dstString)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// We've been given a connection so prepare the session wrapper
|
||||
var tc *tunConn
|
||||
if tc, err = tun._wrap(conn.(*yggdrasil.Conn)); err != nil {
|
||||
// Something went wrong when storing the connection, typically that
|
||||
// something already exists for this address or subnet
|
||||
tun.log.Debugln("TUN iface wrap:", err)
|
||||
return
|
||||
}
|
||||
for _, packet := range packets {
|
||||
tc.writeFrom(nil, packet)
|
||||
}
|
||||
})
|
||||
}()
|
||||
}
|
||||
}
|
||||
// If we have a connection now, try writing to it
|
||||
if isIn && session != nil {
|
||||
session.writeFrom(tun, bs)
|
||||
}
|
||||
*/
|
||||
}
|
||||
|
|
|
|||
152
src/tuntap/keystore.go
Normal file
152
src/tuntap/keystore.go
Normal file
|
|
@ -0,0 +1,152 @@
|
|||
package tuntap
|
||||
|
||||
import (
|
||||
"crypto/ed25519"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
iwt "github.com/Arceliar/ironwood/types"
|
||||
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/address"
|
||||
)
|
||||
|
||||
const keyStoreTimeout = 2 * time.Minute
|
||||
|
||||
type keyStore struct {
|
||||
tun *TunAdapter
|
||||
mutex sync.Mutex
|
||||
keyToInfo map[keyArray]*keyInfo
|
||||
addrToInfo map[address.Address]*keyInfo
|
||||
addrBuffer map[address.Address]*buffer
|
||||
subnetToInfo map[address.Subnet]*keyInfo
|
||||
subnetBuffer map[address.Subnet]*buffer
|
||||
}
|
||||
|
||||
type keyArray [ed25519.PublicKeySize]byte
|
||||
|
||||
type keyInfo struct {
|
||||
key keyArray
|
||||
address address.Address
|
||||
subnet address.Subnet
|
||||
mtu MTU // TODO use this
|
||||
timeout *time.Timer // From calling a time.AfterFunc to do cleanup
|
||||
}
|
||||
|
||||
type buffer struct {
|
||||
packets [][]byte
|
||||
timeout *time.Timer
|
||||
}
|
||||
|
||||
func (k *keyStore) init(tun *TunAdapter) {
|
||||
k.tun = tun
|
||||
k.keyToInfo = make(map[keyArray]*keyInfo)
|
||||
k.addrToInfo = make(map[address.Address]*keyInfo)
|
||||
k.addrBuffer = make(map[address.Address]*buffer)
|
||||
k.subnetToInfo = make(map[address.Subnet]*keyInfo)
|
||||
k.subnetBuffer = make(map[address.Subnet]*buffer)
|
||||
}
|
||||
|
||||
func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if info := k.addrToInfo[addr]; info != nil {
|
||||
k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
k.resetTimeout(info)
|
||||
} else {
|
||||
var buf *buffer
|
||||
if buf = k.addrBuffer[addr]; buf == nil {
|
||||
buf = new(buffer)
|
||||
k.addrBuffer[addr] = buf
|
||||
}
|
||||
msg := append([]byte(nil), bs...)
|
||||
buf.packets = append(buf.packets, msg)
|
||||
if buf.timeout != nil {
|
||||
buf.timeout.Stop()
|
||||
}
|
||||
buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nbuf := k.addrBuffer[addr]; nbuf == buf {
|
||||
delete(k.addrBuffer, addr)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if info := k.subnetToInfo[subnet]; info != nil {
|
||||
k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
k.resetTimeout(info)
|
||||
} else {
|
||||
var buf *buffer
|
||||
if buf = k.subnetBuffer[subnet]; buf == nil {
|
||||
buf = new(buffer)
|
||||
k.subnetBuffer[subnet] = buf
|
||||
}
|
||||
msg := append([]byte(nil), bs...)
|
||||
buf.packets = append(buf.packets, msg)
|
||||
if buf.timeout != nil {
|
||||
buf.timeout.Stop()
|
||||
}
|
||||
buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nbuf := k.subnetBuffer[subnet]; nbuf == buf {
|
||||
delete(k.subnetBuffer, subnet)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func (k *keyStore) update(key ed25519.PublicKey) {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
var kArray keyArray
|
||||
copy(kArray[:], key)
|
||||
var info *keyInfo
|
||||
if info = k.keyToInfo[kArray]; info == nil {
|
||||
info = new(keyInfo)
|
||||
info.key = kArray
|
||||
info.address = *address.AddrForKey(ed25519.PublicKey(info.key[:]))
|
||||
info.subnet = *address.SubnetForKey(ed25519.PublicKey(info.key[:]))
|
||||
info.mtu = MTU(^uint16(0)) // TODO
|
||||
k.keyToInfo[info.key] = info
|
||||
k.addrToInfo[info.address] = info
|
||||
k.subnetToInfo[info.subnet] = info
|
||||
k.resetTimeout(info)
|
||||
if buf := k.addrBuffer[info.address]; buf != nil {
|
||||
for _, bs := range buf.packets {
|
||||
k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
}
|
||||
delete(k.addrBuffer, info.address)
|
||||
}
|
||||
if buf := k.subnetBuffer[info.subnet]; buf != nil {
|
||||
for _, bs := range buf.packets {
|
||||
k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
|
||||
}
|
||||
delete(k.subnetBuffer, info.subnet)
|
||||
}
|
||||
}
|
||||
k.resetTimeout(info)
|
||||
}
|
||||
|
||||
func (k *keyStore) resetTimeout(info *keyInfo) {
|
||||
if info.timeout != nil {
|
||||
info.timeout.Stop()
|
||||
}
|
||||
info.timeout = time.AfterFunc(keyStoreTimeout, func() {
|
||||
k.mutex.Lock()
|
||||
defer k.mutex.Unlock()
|
||||
if nfo := k.keyToInfo[info.key]; nfo == info {
|
||||
delete(k.keyToInfo, info.key)
|
||||
}
|
||||
if nfo := k.addrToInfo[info.address]; nfo == info {
|
||||
delete(k.addrToInfo, info.address)
|
||||
}
|
||||
if nfo := k.subnetToInfo[info.subnet]; nfo == info {
|
||||
delete(k.subnetToInfo, info.subnet)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
|
@ -9,6 +9,7 @@ package tuntap
|
|||
// TODO: Don't block in reader on writes that are pending searches
|
||||
|
||||
import (
|
||||
"crypto/ed25519"
|
||||
"encoding/hex"
|
||||
"errors"
|
||||
"fmt"
|
||||
|
|
@ -38,13 +39,12 @@ const tun_IPv6_HEADER_LENGTH = 40
|
|||
// calling yggdrasil.Start().
|
||||
type TunAdapter struct {
|
||||
core *yggdrasil.Core
|
||||
store keyStore
|
||||
writer tunWriter
|
||||
reader tunReader
|
||||
config *config.NodeState
|
||||
log *log.Logger
|
||||
reconfigure chan chan error
|
||||
listener *yggdrasil.Listener
|
||||
dialer *yggdrasil.Dialer
|
||||
addr address.Address
|
||||
subnet address.Subnet
|
||||
ckr cryptokey
|
||||
|
|
@ -53,15 +53,12 @@ type TunAdapter struct {
|
|||
iface tun.Device
|
||||
phony.Inbox // Currently only used for _handlePacket from the reader, TODO: all the stuff that currently needs a mutex below
|
||||
//mutex sync.RWMutex // Protects the below
|
||||
addrToConn map[address.Address]*tunConn
|
||||
subnetToConn map[address.Subnet]*tunConn
|
||||
dials map[string][][]byte // Buffer of packets to send after dialing finishes
|
||||
isOpen bool
|
||||
isOpen bool
|
||||
}
|
||||
|
||||
type TunOptions struct {
|
||||
Listener *yggdrasil.Listener
|
||||
Dialer *yggdrasil.Dialer
|
||||
//Listener *yggdrasil.Listener
|
||||
//Dialer *yggdrasil.Dialer
|
||||
}
|
||||
|
||||
// Gets the maximum supported MTU for the platform based on the defaults in
|
||||
|
|
@ -113,20 +110,20 @@ func MaximumMTU() MTU {
|
|||
// Init initialises the TUN module. You must have acquired a Listener from
|
||||
// the Yggdrasil core before this point and it must not be in use elsewhere.
|
||||
func (tun *TunAdapter) Init(core *yggdrasil.Core, config *config.NodeState, log *log.Logger, options interface{}) error {
|
||||
/* TODO
|
||||
tunoptions, ok := options.(TunOptions)
|
||||
if !ok {
|
||||
return fmt.Errorf("invalid options supplied to TunAdapter module")
|
||||
}
|
||||
*/
|
||||
tun.core = core
|
||||
tun.store.init(tun)
|
||||
tun.config = config
|
||||
tun.log = log
|
||||
tun.listener = tunoptions.Listener
|
||||
tun.dialer = tunoptions.Dialer
|
||||
tun.addrToConn = make(map[address.Address]*tunConn)
|
||||
tun.subnetToConn = make(map[address.Subnet]*tunConn)
|
||||
tun.dials = make(map[string][][]byte)
|
||||
tun.writer.tun = tun
|
||||
tun.reader.tun = tun
|
||||
tun.core.SetOutOfBandHandler(tun.oobHandler)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
@ -145,7 +142,7 @@ func (tun *TunAdapter) _start() error {
|
|||
return errors.New("TUN module is already started")
|
||||
}
|
||||
current := tun.config.GetCurrent()
|
||||
if tun.config == nil || tun.listener == nil || tun.dialer == nil {
|
||||
if tun.config == nil {
|
||||
return errors.New("no configuration available to TUN")
|
||||
}
|
||||
var boxPub crypto.BoxPubKey
|
||||
|
|
@ -169,9 +166,9 @@ func (tun *TunAdapter) _start() error {
|
|||
if tun.MTU() != current.IfMTU {
|
||||
tun.log.Warnf("Warning: Interface MTU %d automatically adjusted to %d (supported range is 1280-%d)", current.IfMTU, tun.MTU(), MaximumMTU())
|
||||
}
|
||||
tun.core.SetMaximumSessionMTU(tun.MTU())
|
||||
// TODO tun.core.SetMaximumSessionMTU(tun.MTU())
|
||||
tun.isOpen = true
|
||||
go tun.handler()
|
||||
// TODO go tun.handler()
|
||||
tun.reader.Act(nil, tun.reader._read) // Start the reader
|
||||
tun.ckr.init(tun)
|
||||
return nil
|
||||
|
|
@ -225,6 +222,7 @@ func (tun *TunAdapter) UpdateConfig(config *config.NodeConfig) {
|
|||
tun.Act(nil, tun.ckr.configure)
|
||||
}
|
||||
|
||||
/*
|
||||
func (tun *TunAdapter) handler() error {
|
||||
for {
|
||||
// Accept the incoming connection
|
||||
|
|
@ -283,3 +281,19 @@ func (tun *TunAdapter) _wrap(conn *yggdrasil.Conn) (c *tunConn, err error) {
|
|||
// Return
|
||||
return c, err
|
||||
}
|
||||
*/
|
||||
|
||||
func (tun *TunAdapter) oobHandler(fromKey, toKey ed25519.PublicKey, data []byte) {
|
||||
panic("TODO")
|
||||
// parse packet
|
||||
// If it's a lookup then send a response
|
||||
// If it's a response then (maybe) update the keystore
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyLookup(partial ed25519.PublicKey) {
|
||||
panic("TODO")
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyResponse(dest ed25519.PublicKey) {
|
||||
panic("TODO")
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue