mirror of
https://github.com/juanfont/headscale.git
synced 2024-11-10 09:02:30 +08:00
Added MapPoll to Noise protocol
This commit is contained in:
Juan Font Alonso
parent
670c7d9144
commit
7078d36dc6
2 changed files with 742 additions and 1 deletions
6
app.go
6
app.go
|
|
@ -445,7 +445,7 @@ func (h *Headscale) createNoiseMux() *http.ServeMux {
|
|||
mux := http.NewServeMux()
|
||||
|
||||
mux.HandleFunc("/machine/register", h.NoiseRegistrationHandler)
|
||||
// mux.HandleFunc("/machine/map", h.NoisePollNetMapHandler)
|
||||
mux.HandleFunc("/machine/map", h.NoisePollNetMapHandler)
|
||||
|
||||
return mux
|
||||
}
|
||||
|
|
@ -747,6 +747,10 @@ func (h *Headscale) getTLSSettings() (*tls.Config, error) {
|
|||
// Configuration via autocert with HTTP-01. This requires listening on
|
||||
// port 80 for the certificate validation in addition to the headscale
|
||||
// service, which can be configured to run on any other port.
|
||||
httpRouter := gin.Default()
|
||||
httpRouter.POST(ts2021UpgradePath, h.NoiseUpgradeHandler)
|
||||
httpRouter.NoRoute(gin.WrapF(h.redirect))
|
||||
|
||||
go func() {
|
||||
log.Fatal().
|
||||
Caller().
|
||||
|
|
|
|||
737
noise_poll.go
Normal file
737
noise_poll.go
Normal file
|
|
@ -0,0 +1,737 @@
|
|||
package headscale
|
||||
|
||||
import (
|
||||
"context"
|
||||
"encoding/binary"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
"time"
|
||||
|
||||
"github.com/klauspost/compress/zstd"
|
||||
"github.com/rs/zerolog/log"
|
||||
"gorm.io/gorm"
|
||||
"tailscale.com/tailcfg"
|
||||
"tailscale.com/types/key"
|
||||
)
|
||||
|
||||
// NoisePollNetMapHandler takes care of /machine/:id/map using the Noise protocol
|
||||
//
|
||||
// This is the busiest endpoint, as it keeps the HTTP long poll that updates
|
||||
// the clients when something in the network changes.
|
||||
//
|
||||
// The clients POST stuff like HostInfo and their Endpoints here, but
|
||||
// only after their first request (marked with the ReadOnly field).
|
||||
//
|
||||
// At this moment the updates are sent in a quite horrendous way, but they kinda work.
|
||||
func (h *Headscale) NoisePollNetMapHandler(
|
||||
w http.ResponseWriter,
|
||||
r *http.Request,
|
||||
) {
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Msg("PollNetMapHandler called")
|
||||
body, _ := io.ReadAll(r.Body)
|
||||
|
||||
req := tailcfg.MapRequest{}
|
||||
if err := json.Unmarshal(body, &req); err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot parse MapRequest")
|
||||
http.Error(w, "Internal error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
machine, err := h.GetMachineByNodeKeys(req.NodeKey, key.NodePublic{})
|
||||
if err != nil {
|
||||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||||
log.Warn().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Msgf("Ignoring request, cannot find machine with key %s", req.NodeKey.String())
|
||||
http.Error(w, "Internal error", http.StatusNotFound)
|
||||
|
||||
return
|
||||
}
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Msgf("Failed to fetch machine from the database with node key: %s", req.NodeKey.String())
|
||||
http.Error(w, "Internal error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Found machine in database")
|
||||
|
||||
machine.Hostname = req.Hostinfo.Hostname
|
||||
machine.HostInfo = HostInfo(*req.Hostinfo)
|
||||
machine.DiscoKey = DiscoPublicKeyStripPrefix(req.DiscoKey)
|
||||
now := time.Now().UTC()
|
||||
|
||||
// update ACLRules with peer informations (to update server tags if necessary)
|
||||
if h.aclPolicy != nil {
|
||||
err = h.UpdateACLRules()
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "handleAuthKey").
|
||||
Str("machine", machine.Hostname).
|
||||
Err(err)
|
||||
}
|
||||
}
|
||||
|
||||
// From Tailscale client:
|
||||
//
|
||||
// ReadOnly is whether the client just wants to fetch the MapResponse,
|
||||
// without updating their Endpoints. The Endpoints field will be ignored and
|
||||
// LastSeen will not be updated and peers will not be notified of changes.
|
||||
//
|
||||
// The intended use is for clients to discover the DERP map at start-up
|
||||
// before their first real endpoint update.
|
||||
if !req.ReadOnly {
|
||||
machine.Endpoints = req.Endpoints
|
||||
machine.LastSeen = &now
|
||||
}
|
||||
|
||||
if err := h.db.Updates(machine).Error; err != nil {
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Err(err).
|
||||
Msg("Failed to persist/update machine in the database")
|
||||
http.Error(w, "Internal error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
resp, err := h.getNoiseMapResponse(req, machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Err(err).
|
||||
Msg("Failed to get Map response")
|
||||
http.Error(w, "Internal error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// We update our peers if the client is not sending ReadOnly in the MapRequest
|
||||
// so we don't distribute its initial request (it comes with
|
||||
// empty endpoints to peers)
|
||||
|
||||
// Details on the protocol can be found in https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go#L696
|
||||
log.Debug().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Bool("readOnly", req.ReadOnly).
|
||||
Bool("omitPeers", req.OmitPeers).
|
||||
Bool("stream", req.Stream).
|
||||
Msg("Noise client map request processed")
|
||||
|
||||
if req.ReadOnly {
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client is starting up. Probably interested in a DERP map")
|
||||
// w.Header().Set("Content-Type", "application/json")
|
||||
// w.WriteHeader(http.StatusOK)
|
||||
_, err = w.Write(resp)
|
||||
if err != nil {
|
||||
log.Warn().Msgf("Could not send JSON response: %s", err)
|
||||
}
|
||||
if f, ok := w.(http.Flusher); ok {
|
||||
f.Flush()
|
||||
}
|
||||
|
||||
log.Info().Msgf("Noise client map response sent for %s (len %d)", machine.Hostname, len(resp))
|
||||
return
|
||||
}
|
||||
|
||||
// There has been an update to _any_ of the nodes that the other nodes would
|
||||
// need to know about
|
||||
h.setLastStateChangeToNow(machine.Namespace.Name)
|
||||
|
||||
// The request is not ReadOnly, so we need to set up channels for updating
|
||||
// peers via longpoll
|
||||
|
||||
// Only create update channel if it has not been created
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Loading or creating update channel")
|
||||
|
||||
const chanSize = 8
|
||||
updateChan := make(chan struct{}, chanSize)
|
||||
|
||||
pollDataChan := make(chan []byte, chanSize)
|
||||
defer closeChanWithLog(pollDataChan, machine.Hostname, "pollDataChan")
|
||||
|
||||
keepAliveChan := make(chan []byte)
|
||||
|
||||
if req.OmitPeers && !req.Stream {
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client sent endpoint update and is ok with a response without peer list")
|
||||
|
||||
w.Write(resp)
|
||||
if f, ok := w.(http.Flusher); ok {
|
||||
f.Flush()
|
||||
}
|
||||
|
||||
// It sounds like we should update the nodes when we have received a endpoint update
|
||||
// even tho the comments in the tailscale code dont explicitly say so.
|
||||
updateRequestsFromNode.WithLabelValues(machine.Namespace.Name, machine.Hostname, "endpoint-update").
|
||||
Inc()
|
||||
updateChan <- struct{}{}
|
||||
|
||||
return
|
||||
} else if req.OmitPeers && req.Stream {
|
||||
log.Warn().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Ignoring request, don't know how to handle it")
|
||||
http.Error(w, "Internal error", http.StatusBadRequest)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client is ready to access the tailnet")
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Sending initial map")
|
||||
pollDataChan <- resp
|
||||
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Notifying peers")
|
||||
updateRequestsFromNode.WithLabelValues(machine.Namespace.Name, machine.Hostname, "full-update").
|
||||
Inc()
|
||||
updateChan <- struct{}{}
|
||||
|
||||
h.NoisePollNetMapStream(
|
||||
w,
|
||||
r,
|
||||
machine,
|
||||
req,
|
||||
pollDataChan,
|
||||
keepAliveChan,
|
||||
updateChan,
|
||||
)
|
||||
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMap").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Finished stream, closing PollNetMap session")
|
||||
}
|
||||
|
||||
// PollNetMapStream takes care of /machine/:id/map
|
||||
// stream logic, ensuring we communicate updates and data
|
||||
// to the connected clients.
|
||||
func (h *Headscale) NoisePollNetMapStream(
|
||||
w http.ResponseWriter,
|
||||
r *http.Request,
|
||||
machine *Machine,
|
||||
mapRequest tailcfg.MapRequest,
|
||||
pollDataChan chan []byte,
|
||||
keepAliveChan chan []byte,
|
||||
updateChan chan struct{},
|
||||
) {
|
||||
ctx := context.WithValue(context.Background(), machineNameContextKey, machine.Hostname)
|
||||
|
||||
ctx, cancel := context.WithCancel(ctx)
|
||||
defer cancel()
|
||||
|
||||
go h.noiseScheduledPollWorker(
|
||||
ctx,
|
||||
updateChan,
|
||||
keepAliveChan,
|
||||
mapRequest,
|
||||
machine,
|
||||
)
|
||||
|
||||
for {
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Waiting for data to stream...")
|
||||
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Msgf("pollData is %#v, keepAliveChan is %#v, updateChan is %#v", pollDataChan, keepAliveChan, updateChan)
|
||||
|
||||
select {
|
||||
case data := <-pollDataChan:
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Sending data received via pollData channel")
|
||||
_, err := w.Write(data)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Err(err).
|
||||
Msg("Cannot write data")
|
||||
|
||||
break
|
||||
}
|
||||
if f, ok := w.(http.Flusher); ok {
|
||||
f.Flush()
|
||||
}
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Data from pollData channel written successfully")
|
||||
// TODO(kradalby): Abstract away all the database calls, this can cause race conditions
|
||||
// when an outdated machine object is kept alive, e.g. db is update from
|
||||
// command line, but then overwritten.
|
||||
err = h.UpdateMachineFromDatabase(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Err(err).
|
||||
Msg("Cannot update machine from database")
|
||||
|
||||
// client has been removed from database
|
||||
// since the stream opened, terminate connection.
|
||||
break
|
||||
}
|
||||
now := time.Now().UTC()
|
||||
machine.LastSeen = &now
|
||||
|
||||
lastStateUpdate.WithLabelValues(machine.Namespace.Name, machine.Hostname).
|
||||
Set(float64(now.Unix()))
|
||||
machine.LastSuccessfulUpdate = &now
|
||||
|
||||
err = h.TouchMachine(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Err(err).
|
||||
Msg("Cannot update machine LastSuccessfulUpdate")
|
||||
} else {
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "pollData").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Machine entry in database updated successfully after sending pollData")
|
||||
}
|
||||
|
||||
break
|
||||
|
||||
case data := <-keepAliveChan:
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Sending keep alive message")
|
||||
|
||||
_, err := w.Write(data)
|
||||
if f, ok := w.(http.Flusher); ok {
|
||||
f.Flush()
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Err(err).
|
||||
Msg("Cannot write keep alive message")
|
||||
|
||||
break
|
||||
}
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Keep alive sent successfully")
|
||||
// TODO(kradalby): Abstract away all the database calls, this can cause race conditions
|
||||
// when an outdated machine object is kept alive, e.g. db is update from
|
||||
// command line, but then overwritten.
|
||||
err = h.UpdateMachineFromDatabase(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Err(err).
|
||||
Msg("Cannot update machine from database")
|
||||
|
||||
// client has been removed from database
|
||||
// since the stream opened, terminate connection.
|
||||
break
|
||||
}
|
||||
now := time.Now().UTC()
|
||||
machine.LastSeen = &now
|
||||
err = h.TouchMachine(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Err(err).
|
||||
Msg("Cannot update machine LastSeen")
|
||||
} else {
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "keepAlive").
|
||||
Int("bytes", len(data)).
|
||||
Msg("Machine updated successfully after sending keep alive")
|
||||
}
|
||||
|
||||
break
|
||||
|
||||
case <-updateChan:
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Msg("Received a request for update")
|
||||
updateRequestsReceivedOnChannel.WithLabelValues(machine.Namespace.Name, machine.Hostname).
|
||||
Inc()
|
||||
if h.isOutdated(machine) {
|
||||
var lastUpdate time.Time
|
||||
if machine.LastSuccessfulUpdate != nil {
|
||||
lastUpdate = *machine.LastSuccessfulUpdate
|
||||
}
|
||||
log.Debug().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Time("last_successful_update", lastUpdate).
|
||||
Time("last_state_change", h.getLastStateChange(machine.Namespace.Name)).
|
||||
Msgf("There has been updates since the last successful update to %s", machine.Hostname)
|
||||
data, err := h.getNoiseMapResponse(mapRequest, machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Err(err).
|
||||
Msg("Could not get the map update")
|
||||
}
|
||||
_, err = w.Write(data)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Err(err).
|
||||
Msg("Could not write the map response")
|
||||
updateRequestsSentToNode.WithLabelValues(machine.Namespace.Name, machine.Hostname, "failed").
|
||||
Inc()
|
||||
|
||||
break
|
||||
}
|
||||
|
||||
if f, ok := w.(http.Flusher); ok {
|
||||
f.Flush()
|
||||
}
|
||||
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Msg("Updated Map has been sent")
|
||||
updateRequestsSentToNode.WithLabelValues(machine.Namespace.Name, machine.Hostname, "success").
|
||||
Inc()
|
||||
|
||||
// Keep track of the last successful update,
|
||||
// we sometimes end in a state were the update
|
||||
// is not picked up by a client and we use this
|
||||
// to determine if we should "force" an update.
|
||||
// TODO(kradalby): Abstract away all the database calls, this can cause race conditions
|
||||
// when an outdated machine object is kept alive, e.g. db is update from
|
||||
// command line, but then overwritten.
|
||||
err = h.UpdateMachineFromDatabase(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Err(err).
|
||||
Msg("Cannot update machine from database")
|
||||
|
||||
// client has been removed from database
|
||||
// since the stream opened, terminate connection.
|
||||
break
|
||||
}
|
||||
now := time.Now().UTC()
|
||||
|
||||
lastStateUpdate.WithLabelValues(machine.Namespace.Name, machine.Hostname).
|
||||
Set(float64(now.Unix()))
|
||||
machine.LastSuccessfulUpdate = &now
|
||||
|
||||
err = h.TouchMachine(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "update").
|
||||
Err(err).
|
||||
Msg("Cannot update machine LastSuccessfulUpdate")
|
||||
}
|
||||
} else {
|
||||
var lastUpdate time.Time
|
||||
if machine.LastSuccessfulUpdate != nil {
|
||||
lastUpdate = *machine.LastSuccessfulUpdate
|
||||
}
|
||||
log.Trace().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Time("last_successful_update", lastUpdate).
|
||||
Time("last_state_change", h.getLastStateChange(machine.Namespace.Name)).
|
||||
Msgf("%s is up to date", machine.Hostname)
|
||||
}
|
||||
|
||||
break
|
||||
|
||||
case <-ctx.Done():
|
||||
log.Info().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("The client has closed the connection")
|
||||
// TODO: Abstract away all the database calls, this can cause race conditions
|
||||
// when an outdated machine object is kept alive, e.g. db is update from
|
||||
// command line, but then overwritten.
|
||||
err := h.UpdateMachineFromDatabase(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "Done").
|
||||
Err(err).
|
||||
Msg("Cannot update machine from database")
|
||||
|
||||
// client has been removed from database
|
||||
// since the stream opened, terminate connection.
|
||||
break
|
||||
}
|
||||
now := time.Now().UTC()
|
||||
machine.LastSeen = &now
|
||||
err = h.TouchMachine(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("handler", "NoisePollNetMapStream").
|
||||
Str("machine", machine.Hostname).
|
||||
Str("channel", "Done").
|
||||
Err(err).
|
||||
Msg("Cannot update machine LastSeen")
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) noiseScheduledPollWorker(
|
||||
ctx context.Context,
|
||||
updateChan chan struct{},
|
||||
keepAliveChan chan []byte,
|
||||
mapRequest tailcfg.MapRequest,
|
||||
machine *Machine,
|
||||
) {
|
||||
keepAliveTicker := time.NewTicker(keepAliveInterval)
|
||||
updateCheckerTicker := time.NewTicker(updateCheckInterval)
|
||||
|
||||
defer closeChanWithLog(
|
||||
updateChan,
|
||||
fmt.Sprint(ctx.Value(machineNameContextKey)),
|
||||
"updateChan",
|
||||
)
|
||||
defer closeChanWithLog(
|
||||
keepAliveChan,
|
||||
fmt.Sprint(ctx.Value(machineNameContextKey)),
|
||||
"updateChan",
|
||||
)
|
||||
|
||||
for {
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
return
|
||||
|
||||
case <-keepAliveTicker.C:
|
||||
data, err := h.getNoiseMapKeepAliveResponse(mapRequest)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Str("func", "keepAlive").
|
||||
Err(err).
|
||||
Msg("Error generating the keep alive msg")
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Debug().
|
||||
Str("func", "keepAlive").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Sending keepalive")
|
||||
keepAliveChan <- data
|
||||
|
||||
case <-updateCheckerTicker.C:
|
||||
log.Debug().
|
||||
Str("func", "scheduledPollWorker").
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Sending update request")
|
||||
updateRequestsFromNode.WithLabelValues(machine.Namespace.Name, machine.Hostname, "scheduled-update").
|
||||
Inc()
|
||||
updateChan <- struct{}{}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) getNoiseMapKeepAliveResponse(req tailcfg.MapRequest) ([]byte, error) {
|
||||
resp := tailcfg.MapResponse{
|
||||
KeepAlive: true,
|
||||
}
|
||||
|
||||
// The TS2021 protocol does not rely anymore on the machine key to
|
||||
// encrypt in a NaCl box the map response. We just send it back
|
||||
// unencrypted via the encrypted Noise channel.
|
||||
// declare the incoming size on the first 4 bytes
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot marshal map response")
|
||||
}
|
||||
|
||||
var srcCompressed []byte
|
||||
if req.Compress == "zstd" {
|
||||
encoder, _ := zstd.NewWriter(nil)
|
||||
srcCompressed = encoder.EncodeAll(respBody, nil)
|
||||
} else {
|
||||
srcCompressed = respBody
|
||||
}
|
||||
|
||||
data := make([]byte, reservedResponseHeaderSize)
|
||||
binary.LittleEndian.PutUint32(data, uint32(len(srcCompressed)))
|
||||
data = append(data, srcCompressed...)
|
||||
|
||||
return data, nil
|
||||
}
|
||||
|
||||
func (h *Headscale) getNoiseMapResponse(
|
||||
req tailcfg.MapRequest,
|
||||
machine *Machine,
|
||||
) ([]byte, error) {
|
||||
log.Trace().
|
||||
Str("func", "getNoiseMapResponse").
|
||||
Str("machine", req.Hostinfo.Hostname).
|
||||
Msg("Creating Map response")
|
||||
node, err := machine.toNode(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "getNoiseMapResponse").
|
||||
Err(err).
|
||||
Msg("Cannot convert to node")
|
||||
|
||||
return nil, err
|
||||
}
|
||||
|
||||
peers, err := h.getValidPeers(machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "getNoiseMapResponse").
|
||||
Err(err).
|
||||
Msg("Cannot fetch peers")
|
||||
|
||||
return nil, err
|
||||
}
|
||||
|
||||
profiles := getMapResponseUserProfiles(*machine, peers)
|
||||
|
||||
nodePeers, err := peers.toNodes(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "getNoiseMapResponse").
|
||||
Err(err).
|
||||
Msg("Failed to convert peers to Tailscale nodes")
|
||||
|
||||
return nil, err
|
||||
}
|
||||
|
||||
dnsConfig := getMapResponseDNSConfig(
|
||||
h.cfg.DNSConfig,
|
||||
h.cfg.BaseDomain,
|
||||
*machine,
|
||||
peers,
|
||||
)
|
||||
|
||||
resp := tailcfg.MapResponse{
|
||||
KeepAlive: false,
|
||||
Node: node,
|
||||
Peers: nodePeers,
|
||||
DNSConfig: dnsConfig,
|
||||
Domain: h.cfg.BaseDomain,
|
||||
PacketFilter: h.aclRules,
|
||||
DERPMap: h.DERPMap,
|
||||
UserProfiles: profiles,
|
||||
Debug: &tailcfg.Debug{
|
||||
DisableLogTail: !h.cfg.LogTail.Enabled,
|
||||
RandomizeClientPort: h.cfg.RandomizeClientPort,
|
||||
},
|
||||
}
|
||||
|
||||
log.Trace().
|
||||
Str("func", "getNoiseMapResponse").
|
||||
Str("machine", req.Hostinfo.Hostname).
|
||||
Msgf("Generated map response: %s", tailMapResponseToString(resp))
|
||||
|
||||
// The TS2021 protocol does not rely anymore on the machine key to
|
||||
// encrypt in a NaCl box the map response. We just send it back
|
||||
// unencrypted via the encrypted Noise channel.
|
||||
// declare the incoming size on the first 4 bytes
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot marshal map response")
|
||||
}
|
||||
|
||||
var srcCompressed []byte
|
||||
if req.Compress == "zstd" {
|
||||
encoder, _ := zstd.NewWriter(nil)
|
||||
srcCompressed = encoder.EncodeAll(respBody, nil)
|
||||
} else {
|
||||
srcCompressed = respBody
|
||||
}
|
||||
|
||||
data := make([]byte, reservedResponseHeaderSize)
|
||||
binary.LittleEndian.PutUint32(data, uint32(len(srcCompressed)))
|
||||
data = append(data, srcCompressed...)
|
||||
|
||||
return data, nil
|
||||
}
|
||||
Loading…
Reference in a new issue