yggdrasil-network/yggdrasil-go
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(broken state) WIP on tuntap

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This commit is contained in:
Arceliar 2021-05-08 10:39:07 -05:00
parent f1c37f8440
commit 0cff56fcc1
6 changed files with 524 additions and 547 deletions
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46
src/tuntap/tun.go
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@ -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")
}