mirror of
https://github.com/juanfont/headscale.git
synced 2025-10-30 23:51:03 +01:00
Use common core for noise registration
This commit is contained in:
Juan Font Alonso
parent
b6e3cd81c6
commit
c894db3dd4
@ -2,16 +2,12 @@ package headscale
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/rs/zerolog/log"
|
||||
"gorm.io/gorm"
|
||||
"tailscale.com/tailcfg"
|
||||
"tailscale.com/types/key"
|
||||
)
|
||||
|
||||
// // NoiseRegistrationHandler handles the actual registration process of a machine.
|
||||
@ -38,463 +34,5 @@ func (h *Headscale) NoiseRegistrationHandler(
|
||||
return
|
||||
}
|
||||
|
||||
log.Trace().Caller().
|
||||
Str("node_key", registerRequest.NodeKey.ShortString()).
|
||||
Str("old_node_key", registerRequest.OldNodeKey.ShortString()).
|
||||
Msg("New node is registering")
|
||||
|
||||
now := time.Now().UTC()
|
||||
machine, err := h.GetMachineByAnyNodeKey(registerRequest.NodeKey, registerRequest.OldNodeKey)
|
||||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||||
// If the machine has AuthKey set, handle registration via PreAuthKeys
|
||||
if registerRequest.Auth.AuthKey != "" {
|
||||
h.handleNoiseAuthKey(writer, req, registerRequest)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Check if the node is waiting for interactive login.
|
||||
//
|
||||
// TODO(juan): We could use this field to improve our protocol implementation,
|
||||
// and hold the request until the client closes it, or the interactive
|
||||
// login is completed (i.e., the user registers the machine).
|
||||
// This is not implemented yet, as it is no strictly required. The only side-effect
|
||||
// is that the client will hammer headscale with requests until it gets a
|
||||
// successful RegisterResponse.
|
||||
if registerRequest.Followup != "" {
|
||||
if _, ok := h.registrationCache.Get(NodePublicKeyStripPrefix(registerRequest.NodeKey)); ok {
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Str("node_key", registerRequest.NodeKey.ShortString()).
|
||||
Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
|
||||
Str("follow_up", registerRequest.Followup).
|
||||
Msg("Machine is waiting for interactive login")
|
||||
|
||||
ticker := time.NewTicker(registrationHoldoff)
|
||||
select {
|
||||
case <-req.Context().Done():
|
||||
return
|
||||
case <-ticker.C:
|
||||
h.handleNoiseMachineRegistrationNew(writer, req, registerRequest)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Str("node_key", registerRequest.NodeKey.ShortString()).
|
||||
Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
|
||||
Str("follow_up", registerRequest.Followup).
|
||||
Msg("New Noise machine not yet in the database")
|
||||
|
||||
givenName, err := h.GenerateGivenName(registerRequest.Hostinfo.Hostname)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "RegistrationHandler").
|
||||
Str("hostinfo.name", registerRequest.Hostinfo.Hostname).
|
||||
Err(err)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The machine did not have a key to authenticate, which means
|
||||
// that we rely on a method that calls back some how (OpenID or CLI)
|
||||
// We create the machine and then keep it around until a callback
|
||||
// happens
|
||||
newMachine := Machine{
|
||||
MachineKey: "",
|
||||
Hostname: registerRequest.Hostinfo.Hostname,
|
||||
GivenName: givenName,
|
||||
NodeKey: NodePublicKeyStripPrefix(registerRequest.NodeKey),
|
||||
LastSeen: &now,
|
||||
Expiry: &time.Time{},
|
||||
}
|
||||
|
||||
if !registerRequest.Expiry.IsZero() {
|
||||
log.Trace().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Time("expiry", registerRequest.Expiry).
|
||||
Msg("Non-zero expiry time requested")
|
||||
newMachine.Expiry = ®isterRequest.Expiry
|
||||
}
|
||||
|
||||
h.registrationCache.Set(
|
||||
NodePublicKeyStripPrefix(registerRequest.NodeKey),
|
||||
newMachine,
|
||||
registerCacheExpiration,
|
||||
)
|
||||
|
||||
h.handleNoiseMachineRegistrationNew(writer, req, registerRequest)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The machine is already registered, so we need to pass through reauth or key update.
|
||||
if machine != nil {
|
||||
// If the NodeKey stored in headscale is the same as the key presented in a registration
|
||||
// request, then we have a node that is either:
|
||||
// - Trying to log out (sending a expiry in the past)
|
||||
// - A valid, registered machine, looking for the node map
|
||||
// - Expired machine wanting to reauthenticate
|
||||
if machine.NodeKey == NodePublicKeyStripPrefix(registerRequest.NodeKey) {
|
||||
// The client sends an Expiry in the past if the client is requesting to expire the key (aka logout)
|
||||
// https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go#L648
|
||||
if !registerRequest.Expiry.IsZero() && registerRequest.Expiry.UTC().Before(now) {
|
||||
h.handleNoiseNodeLogOut(writer, req, *machine)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// If machine is not expired, and is register, we have a already accepted this machine,
|
||||
// let it proceed with a valid registration
|
||||
if !machine.isExpired() {
|
||||
h.handleNoiseNodeValidRegistration(writer, req, *machine)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// The NodeKey we have matches OldNodeKey, which means this is a refresh after a key expiration
|
||||
if machine.NodeKey == NodePublicKeyStripPrefix(registerRequest.OldNodeKey) &&
|
||||
!machine.isExpired() {
|
||||
h.handleNoiseNodeRefreshKey(writer, req, registerRequest, *machine)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The node has expired
|
||||
h.handleNoiseNodeExpired(writer, req, registerRequest, *machine)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseAuthKey(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
) {
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msgf("Processing auth key for %s over Noise", registerRequest.Hostinfo.Hostname)
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
pak, err := h.checkKeyValidity(registerRequest.Auth.AuthKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("Failed authentication via AuthKey")
|
||||
resp.MachineAuthorized = false
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusUnauthorized)
|
||||
err = json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to encode response")
|
||||
}
|
||||
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msg("Failed authentication via AuthKey over Noise")
|
||||
|
||||
if pak != nil {
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
} else {
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", "unknown").Inc()
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msg("Authentication key was valid, proceeding to acquire IP addresses")
|
||||
|
||||
nodeKey := NodePublicKeyStripPrefix(registerRequest.NodeKey)
|
||||
|
||||
// retrieve machine information if it exist
|
||||
// The error is not important, because if it does not
|
||||
// exist, then this is a new machine and we will move
|
||||
// on to registration.
|
||||
machine, _ := h.GetMachineByAnyNodeKey(registerRequest.NodeKey, registerRequest.OldNodeKey)
|
||||
if machine != nil {
|
||||
log.Trace().
|
||||
Caller().
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("machine already registered, refreshing with new auth key")
|
||||
|
||||
machine.NodeKey = nodeKey
|
||||
machine.AuthKeyID = uint(pak.ID)
|
||||
err = h.RefreshMachine(machine, registerRequest.Expiry)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("machine", machine.Hostname).
|
||||
Err(err).
|
||||
Msg("Failed to refresh machine")
|
||||
|
||||
return
|
||||
}
|
||||
} else {
|
||||
now := time.Now().UTC()
|
||||
|
||||
givenName, err := h.GenerateGivenName(registerRequest.Hostinfo.Hostname)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "RegistrationHandler").
|
||||
Str("hostinfo.name", registerRequest.Hostinfo.Hostname).
|
||||
Err(err)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
machineToRegister := Machine{
|
||||
Hostname: registerRequest.Hostinfo.Hostname,
|
||||
GivenName: givenName,
|
||||
NamespaceID: pak.Namespace.ID,
|
||||
MachineKey: "",
|
||||
RegisterMethod: RegisterMethodAuthKey,
|
||||
Expiry: ®isterRequest.Expiry,
|
||||
NodeKey: nodeKey,
|
||||
LastSeen: &now,
|
||||
AuthKeyID: uint(pak.ID),
|
||||
}
|
||||
|
||||
machine, err = h.RegisterMachine(
|
||||
machineToRegister,
|
||||
)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("could not register machine")
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
err = h.UsePreAuthKey(pak)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to use pre-auth key")
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
resp.MachineAuthorized = true
|
||||
resp.User = *pak.Namespace.toUser()
|
||||
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "success", pak.Namespace.Name).
|
||||
Inc()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err = json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to encode response")
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Str("ips", strings.Join(machine.IPAddresses.ToStringSlice(), ", ")).
|
||||
Msg("Successfully authenticated via AuthKey on Noise")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseNodeValidRegistration(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
machine Machine,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The machine registration is valid, respond with redirect to /map
|
||||
log.Debug().
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client is registered and we have the current NodeKey. All clear to /map")
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.MachineAuthorized = true
|
||||
resp.User = *machine.Namespace.toUser()
|
||||
resp.Login = *machine.Namespace.toLogin()
|
||||
|
||||
machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
|
||||
Inc()
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err := json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to encode response")
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseMachineRegistrationNew(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The machine registration is new, redirect the client to the registration URL
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msg("The node seems to be new, sending auth url")
|
||||
if h.cfg.OIDC.Issuer != "" {
|
||||
resp.AuthURL = fmt.Sprintf(
|
||||
"%s/oidc/register/%s",
|
||||
strings.TrimSuffix(h.cfg.ServerURL, "/"),
|
||||
NodePublicKeyStripPrefix(registerRequest.NodeKey),
|
||||
)
|
||||
} else {
|
||||
resp.AuthURL = fmt.Sprintf("%s/register/%s",
|
||||
strings.TrimSuffix(h.cfg.ServerURL, "/"), NodePublicKeyStripPrefix(registerRequest.NodeKey))
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err := json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to encode response")
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseNodeLogOut(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
machine Machine,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Info().
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client requested logout")
|
||||
|
||||
err := h.ExpireMachine(&machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "handleMachineLogOut").
|
||||
Err(err).
|
||||
Msg("Failed to expire machine")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.MachineAuthorized = false
|
||||
resp.User = *machine.Namespace.toUser()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err = json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("could not encode response")
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseNodeRefreshKey(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machine Machine,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Debug().
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("We have the OldNodeKey in the database. This is a key refresh")
|
||||
machine.NodeKey = NodePublicKeyStripPrefix(registerRequest.NodeKey)
|
||||
h.db.Save(&machine)
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.User = *machine.Namespace.toUser()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err := json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to encode response")
|
||||
}
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNoiseNodeExpired(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machine Machine,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The client has registered before, but has expired
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Machine registration has expired. Sending a authurl to register")
|
||||
|
||||
if registerRequest.Auth.AuthKey != "" {
|
||||
h.handleNoiseAuthKey(writer, req, registerRequest)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
if h.cfg.OIDC.Issuer != "" {
|
||||
resp.AuthURL = fmt.Sprintf("%s/oidc/register/%s",
|
||||
strings.TrimSuffix(h.cfg.ServerURL, "/"), NodePublicKeyStripPrefix(registerRequest.NodeKey))
|
||||
} else {
|
||||
resp.AuthURL = fmt.Sprintf("%s/register/%s",
|
||||
strings.TrimSuffix(h.cfg.ServerURL, "/"), NodePublicKeyStripPrefix(registerRequest.NodeKey))
|
||||
}
|
||||
|
||||
machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
|
||||
Inc()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
err := json.NewEncoder(writer).Encode(resp)
|
||||
if err != nil {
|
||||
log.Error().Caller().Err(err).Msg("Failed to encode response")
|
||||
}
|
||||
h.handleRegisterCommon(writer, req, registerRequest, key.MachinePublic{})
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user