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tun session protocol traffic cleanup

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This commit is contained in:
Arceliar 2021-05-23 11:58:52 -05:00
parent 233cf0c962
commit 29dda650b5
6 changed files with 125 additions and 115 deletions
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8
src/tuntap/admin.go
View File

@ -34,8 +34,8 @@ func (t *TunAdapter) SetupAdminHandlers(a *admin.AdminSocket) {
}
return res, nil
})
_ = a.AddHandler("getNodeInfo", []string{"key"}, t.nodeinfo.nodeInfoAdminHandler)
_ = a.AddHandler("debugGetSelf", []string{"key"}, t.debug.getSelfHandler)
_ = a.AddHandler("debugGetPeers", []string{"key"}, t.debug.getPeersHandler)
_ = a.AddHandler("debugGetDHT", []string{"key"}, t.debug.getDHTHandler)
_ = a.AddHandler("getNodeInfo", []string{"key"}, t.proto.nodeinfo.nodeInfoAdminHandler)
_ = a.AddHandler("debugGetSelf", []string{"key"}, t.proto.getSelfHandler)
_ = a.AddHandler("debugGetPeers", []string{"key"}, t.proto.getPeersHandler)
_ = a.AddHandler("debugGetDHT", []string{"key"}, t.proto.getDHTHandler)
}

16
src/tuntap/iface.go
View File

@ -77,22 +77,12 @@ func (tun *TunAdapter) write() {
if !tun.isEnabled {
continue // Drop traffic if the tun is disabled
}
case typeSessionNodeInfoRequest:
var key keyArray
copy(key[:], from.(iwt.Addr))
tun.nodeinfo.handleReq(nil, key)
continue
case typeSessionNodeInfoResponse:
var key keyArray
copy(key[:], from.(iwt.Addr))
res := append([]byte(nil), bs[1:n]...)
tun.nodeinfo.handleRes(nil, key, res)
continue
case typeSessionDebug:
case typeSessionProto:
var key keyArray
copy(key[:], from.(iwt.Addr))
data := append([]byte(nil), bs[1:n]...)
tun.debug.handleDebug(nil, key, data)
tun.proto.handleProto(nil, key, data)
continue
default:
continue
}

16
src/tuntap/nodeinfo.go
View File

@ -20,7 +20,7 @@ type NodeInfoPayload []byte
type nodeinfo struct {
phony.Inbox
tun *TunAdapter
proto *protoHandler
myNodeInfo NodeInfoPayload
callbacks map[keyArray]nodeinfoCallback
}
@ -44,14 +44,14 @@ type nodeinfoReqRes struct {
// Initialises the nodeinfo cache/callback maps, and starts a goroutine to keep
// the cache/callback maps clean of stale entries
func (m *nodeinfo) init(tun *TunAdapter) {
func (m *nodeinfo) init(proto *protoHandler) {
m.Act(nil, func() {
m._init(tun)
m._init(proto)
})
}
func (m *nodeinfo) _init(tun *TunAdapter) {
m.tun = tun
func (m *nodeinfo) _init(proto *protoHandler) {
m.proto = proto
m.callbacks = make(map[keyArray]nodeinfoCallback)
m._cleanup()
}
@ -154,7 +154,7 @@ func (m *nodeinfo) _sendReq(key keyArray, callback func(nodeinfo NodeInfoPayload
if callback != nil {
m._addCallback(key, callback)
}
m.tun.core.WriteTo([]byte{typeSessionNodeInfoRequest}, iwt.Addr(key[:]))
m.proto.tun.core.WriteTo([]byte{typeSessionProto, typeProtoNodeInfoRequest}, iwt.Addr(key[:]))
}
func (m *nodeinfo) handleReq(from phony.Actor, key keyArray) {
@ -170,8 +170,8 @@ func (m *nodeinfo) handleRes(from phony.Actor, key keyArray, info NodeInfoPayloa
}
func (m *nodeinfo) _sendRes(key keyArray) {
bs := append([]byte{typeSessionNodeInfoResponse}, m._getNodeInfo()...)
m.tun.core.WriteTo(bs, iwt.Addr(key[:]))
bs := append([]byte{typeSessionProto, typeProtoNodeInfoResponse}, m._getNodeInfo()...)
m.proto.tun.core.WriteTo(bs, iwt.Addr(key[:]))
}
// Admin socket stuff

172
src/tuntap/debug.go → src/tuntap/proto.go
View File

@ -25,173 +25,189 @@ type reqInfo struct {
timer *time.Timer // time.AfterFunc cleanup
}
type debugHandler struct {
type protoHandler struct {
phony.Inbox
tun *TunAdapter
nodeinfo nodeinfo
sreqs map[keyArray]*reqInfo
preqs map[keyArray]*reqInfo
dreqs map[keyArray]*reqInfo
}
func (d *debugHandler) init(tun *TunAdapter) {
d.tun = tun
d.sreqs = make(map[keyArray]*reqInfo)
d.preqs = make(map[keyArray]*reqInfo)
d.dreqs = make(map[keyArray]*reqInfo)
func (p *protoHandler) init(tun *TunAdapter) {
p.tun = tun
p.nodeinfo.init(p)
p.sreqs = make(map[keyArray]*reqInfo)
p.preqs = make(map[keyArray]*reqInfo)
p.dreqs = make(map[keyArray]*reqInfo)
}
func (d *debugHandler) handleDebug(from phony.Actor, key keyArray, bs []byte) {
d.Act(from, func() {
d._handleDebug(key, bs)
func (p *protoHandler) handleProto(from phony.Actor, key keyArray, bs []byte) {
if len(bs) == 0 {
return
}
switch bs[0] {
case typeProtoDummy:
case typeProtoNodeInfoRequest:
p.nodeinfo.handleReq(p, key)
case typeProtoNodeInfoResponse:
p.nodeinfo.handleRes(p, key, bs[1:])
case typeProtoDebug:
p._handleDebug(key, bs[1:])
}
}
func (p *protoHandler) handleDebug(from phony.Actor, key keyArray, bs []byte) {
p.Act(from, func() {
p._handleDebug(key, bs)
})
}
func (d *debugHandler) _handleDebug(key keyArray, bs []byte) {
func (p *protoHandler) _handleDebug(key keyArray, bs []byte) {
if len(bs) == 0 {
return
}
switch bs[0] {
case typeDebugDummy:
case typeDebugGetSelfRequest:
d._handleGetSelfRequest(key)
p._handleGetSelfRequest(key)
case typeDebugGetSelfResponse:
d._handleGetSelfResponse(key, bs[1:])
p._handleGetSelfResponse(key, bs[1:])
case typeDebugGetPeersRequest:
d._handleGetPeersRequest(key)
p._handleGetPeersRequest(key)
case typeDebugGetPeersResponse:
d._handleGetPeersResponse(key, bs[1:])
p._handleGetPeersResponse(key, bs[1:])
case typeDebugGetDHTRequest:
d._handleGetDHTRequest(key)
p._handleGetDHTRequest(key)
case typeDebugGetDHTResponse:
d._handleGetDHTResponse(key, bs[1:])
default:
p._handleGetDHTResponse(key, bs[1:])
}
}
func (d *debugHandler) sendGetSelfRequest(key keyArray, callback func([]byte)) {
d.Act(nil, func() {
if info := d.sreqs[key]; info != nil {
func (p *protoHandler) sendGetSelfRequest(key keyArray, callback func([]byte)) {
p.Act(nil, func() {
if info := p.sreqs[key]; info != nil {
info.timer.Stop()
delete(d.sreqs, key)
delete(p.sreqs, key)
}
info := new(reqInfo)
info.callback = callback
info.timer = time.AfterFunc(time.Minute, func() {
d.Act(nil, func() {
if d.sreqs[key] == info {
delete(d.sreqs, key)
p.Act(nil, func() {
if p.sreqs[key] == info {
delete(p.sreqs, key)
}
})
})
d.sreqs[key] = info
d._sendDebug(key, typeDebugGetSelfRequest, nil)
p.sreqs[key] = info
p._sendDebug(key, typeDebugGetSelfRequest, nil)
})
}
func (d *debugHandler) _handleGetSelfRequest(key keyArray) {
self := d.tun.core.GetSelf()
bs, err := json.Marshal(self)
func (p *protoHandler) _handleGetSelfRequest(key keyArray) {
self := p.tun.core.GetSelf()
bs, err := json.Marshal(self) // FIXME this puts keys in base64, not hex
if err != nil {
return
}
d._sendDebug(key, typeDebugGetSelfResponse, bs)
p._sendDebug(key, typeDebugGetSelfResponse, bs)
}
func (d *debugHandler) _handleGetSelfResponse(key keyArray, bs []byte) {
if info := d.sreqs[key]; info != nil {
func (p *protoHandler) _handleGetSelfResponse(key keyArray, bs []byte) {
if info := p.sreqs[key]; info != nil {
info.timer.Stop()
info.callback(bs)
delete(d.sreqs, key)
delete(p.sreqs, key)
}
}
func (d *debugHandler) sendGetPeersRequest(key keyArray, callback func([]byte)) {
d.Act(nil, func() {
if info := d.preqs[key]; info != nil {
func (p *protoHandler) sendGetPeersRequest(key keyArray, callback func([]byte)) {
p.Act(nil, func() {
if info := p.preqs[key]; info != nil {
info.timer.Stop()
delete(d.preqs, key)
delete(p.preqs, key)
}
info := new(reqInfo)
info.callback = callback
info.timer = time.AfterFunc(time.Minute, func() {
d.Act(nil, func() {
if d.preqs[key] == info {
delete(d.preqs, key)
p.Act(nil, func() {
if p.preqs[key] == info {
delete(p.preqs, key)
}
})
})
d.preqs[key] = info
d._sendDebug(key, typeDebugGetPeersRequest, nil)
p.preqs[key] = info
p._sendDebug(key, typeDebugGetPeersRequest, nil)
})
}
func (d *debugHandler) _handleGetPeersRequest(key keyArray) {
peers := d.tun.core.GetPeers()
func (p *protoHandler) _handleGetPeersRequest(key keyArray) {
peers := p.tun.core.GetPeers()
var bs []byte
for _, p := range peers {
tmp := append(bs, p.Key[:]...)
const responseOverhead = 1
if uint64(len(tmp))+1 > d.tun.maxSessionMTU() {
for _, pinfo := range peers {
tmp := append(bs, pinfo.Key[:]...)
const responseOverhead = 2 // 1 debug type, 1 getpeers type
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
break
}
bs = tmp
}
d._sendDebug(key, typeDebugGetPeersResponse, bs)
p._sendDebug(key, typeDebugGetPeersResponse, bs)
}
func (d *debugHandler) _handleGetPeersResponse(key keyArray, bs []byte) {
if info := d.preqs[key]; info != nil {
func (p *protoHandler) _handleGetPeersResponse(key keyArray, bs []byte) {
if info := p.preqs[key]; info != nil {
info.timer.Stop()
info.callback(bs)
delete(d.preqs, key)
delete(p.preqs, key)
}
}
func (d *debugHandler) sendGetDHTRequest(key keyArray, callback func([]byte)) {
d.Act(nil, func() {
if info := d.dreqs[key]; info != nil {
func (p *protoHandler) sendGetDHTRequest(key keyArray, callback func([]byte)) {
p.Act(nil, func() {
if info := p.dreqs[key]; info != nil {
info.timer.Stop()
delete(d.dreqs, key)
delete(p.dreqs, key)
}
info := new(reqInfo)
info.callback = callback
info.timer = time.AfterFunc(time.Minute, func() {
d.Act(nil, func() {
if d.dreqs[key] == info {
delete(d.dreqs, key)
p.Act(nil, func() {
if p.dreqs[key] == info {
delete(p.dreqs, key)
}
})
})
d.dreqs[key] = info
d._sendDebug(key, typeDebugGetDHTRequest, nil)
p.dreqs[key] = info
p._sendDebug(key, typeDebugGetDHTRequest, nil)
})
}
func (d *debugHandler) _handleGetDHTRequest(key keyArray) {
dinfos := d.tun.core.GetDHT()
func (p *protoHandler) _handleGetDHTRequest(key keyArray) {
dinfos := p.tun.core.GetDHT()
var bs []byte
for _, dinfo := range dinfos {
tmp := append(bs, dinfo.Key[:]...)
const responseOverhead = 1
if uint64(len(tmp))+1 > d.tun.maxSessionMTU() {
const responseOverhead = 2 // 1 debug type, 1 getdht type
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
break
}
bs = tmp
}
d._sendDebug(key, typeDebugGetDHTResponse, bs)
p._sendDebug(key, typeDebugGetDHTResponse, bs)
}
func (d *debugHandler) _handleGetDHTResponse(key keyArray, bs []byte) {
if info := d.dreqs[key]; info != nil {
func (p *protoHandler) _handleGetDHTResponse(key keyArray, bs []byte) {
if info := p.dreqs[key]; info != nil {
info.timer.Stop()
info.callback(bs)
delete(d.dreqs, key)
delete(p.dreqs, key)
}
}
func (d *debugHandler) _sendDebug(key keyArray, dType uint8, data []byte) {
bs := append([]byte{typeSessionDebug, dType}, data...)
d.tun.core.WriteTo(bs, iwt.Addr(key[:]))
func (p *protoHandler) _sendDebug(key keyArray, dType uint8, data []byte) {
bs := append([]byte{typeSessionProto, typeProtoDebug, dType}, data...)
p.tun.core.WriteTo(bs, iwt.Addr(key[:]))
}
// Admin socket stuff
@ -202,7 +218,7 @@ type DebugGetSelfRequest struct {
type DebugGetSelfResponse map[string]interface{}
func (d *debugHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
func (p *protoHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
var req DebugGetSelfRequest
if err := json.Unmarshal(in, &req); err != nil {
return nil, err
@ -215,7 +231,7 @@ func (d *debugHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
}
copy(key[:], kbs)
ch := make(chan []byte, 1)
d.sendGetSelfRequest(key, func(info []byte) {
p.sendGetSelfRequest(key, func(info []byte) {
ch <- info
})
timer := time.NewTimer(6 * time.Second)
@ -239,7 +255,7 @@ type DebugGetPeersRequest struct {
type DebugGetPeersResponse map[string]interface{}
func (d *debugHandler) getPeersHandler(in json.RawMessage) (interface{}, error) {
func (p *protoHandler) getPeersHandler(in json.RawMessage) (interface{}, error) {
var req DebugGetPeersRequest
if err := json.Unmarshal(in, &req); err != nil {
return nil, err
@ -252,7 +268,7 @@ func (d *debugHandler) getPeersHandler(in json.RawMessage) (interface{}, error)
}
copy(key[:], kbs)
ch := make(chan []byte, 1)
d.sendGetPeersRequest(key, func(info []byte) {
p.sendGetPeersRequest(key, func(info []byte) {
ch <- info
})
timer := time.NewTimer(6 * time.Second)
@ -286,7 +302,7 @@ type DebugGetDHTRequest struct {
type DebugGetDHTResponse map[string]interface{}
func (d *debugHandler) getDHTHandler(in json.RawMessage) (interface{}, error) {
func (p *protoHandler) getDHTHandler(in json.RawMessage) (interface{}, error) {
var req DebugGetDHTRequest
if err := json.Unmarshal(in, &req); err != nil {
return nil, err
@ -299,7 +315,7 @@ func (d *debugHandler) getDHTHandler(in json.RawMessage) (interface{}, error) {
}
copy(key[:], kbs)
ch := make(chan []byte, 1)
d.sendGetDHTRequest(key, func(info []byte) {
p.sendGetDHTRequest(key, func(info []byte) {
ch <- info
})
timer := time.NewTimer(6 * time.Second)

8
src/tuntap/tun.go
View File

@ -46,8 +46,7 @@ type TunAdapter struct {
isOpen bool
isEnabled bool // Used by the writer to drop sessionTraffic if not enabled
gatekeeper func(pubkey ed25519.PublicKey, initiator bool) bool
nodeinfo nodeinfo
debug debugHandler
proto protoHandler
}
func (tun *TunAdapter) SetSessionGatekeeper(gatekeeper func(pubkey ed25519.PublicKey, initiator bool) bool) {
@ -109,12 +108,11 @@ func (tun *TunAdapter) Init(core *yggdrasil.Core, config *config.NodeState, log
tun.store.init(tun)
tun.config = config
tun.log = log
tun.nodeinfo.init(tun)
tun.nodeinfo.setNodeInfo(config.Current.NodeInfo, config.Current.NodeInfoPrivacy)
tun.proto.init(tun)
tun.proto.nodeinfo.setNodeInfo(config.Current.NodeInfo, config.Current.NodeInfoPrivacy)
if err := tun.core.SetOutOfBandHandler(tun.oobHandler); err != nil {
return fmt.Errorf("tun.core.SetOutOfBandHander: %w", err)
}
tun.debug.init(tun)
return nil
}

12
src/tuntap/types.go
View File

@ -11,7 +11,13 @@ const (
const (
typeSessionDummy = iota
typeSessionTraffic
typeSessionNodeInfoRequest
typeSessionNodeInfoResponse
typeSessionDebug // Debug messages, intended to be removed at some point
typeSessionProto
)
// Protocol packet types
const (
typeProtoDummy = iota
typeProtoNodeInfoRequest
typeProtoNodeInfoResponse
typeProtoDebug = 255
)