Rewrite authentication flow (#2374)
This commit is contained in:
Kristoffer Dalby
GitHub
parent
e172c29360
commit
d57a55c024
20 changed files with 848 additions and 996 deletions
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@ -2,7 +2,6 @@ package hscontrol
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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@ -13,7 +12,6 @@ import (
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"github.com/juanfont/headscale/hscontrol/db"
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"github.com/juanfont/headscale/hscontrol/types"
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"github.com/juanfont/headscale/hscontrol/util"
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"github.com/rs/zerolog/log"
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"gorm.io/gorm"
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"tailscale.com/tailcfg"
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"tailscale.com/types/key"
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@ -25,730 +23,244 @@ type AuthProvider interface {
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AuthURL(types.RegistrationID) string
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}
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func logAuthFunc(
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registerRequest tailcfg.RegisterRequest,
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func (h *Headscale) handleRegister(
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ctx context.Context,
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regReq tailcfg.RegisterRequest,
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machineKey key.MachinePublic,
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registrationId types.RegistrationID,
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) (func(string), func(string), func(error, string)) {
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return func(msg string) {
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log.Info().
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Caller().
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Str("registration_id", registrationId.String()).
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Str("machine_key", machineKey.ShortString()).
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Str("node_key", registerRequest.NodeKey.ShortString()).
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Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
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Str("node", registerRequest.Hostinfo.Hostname).
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Str("followup", registerRequest.Followup).
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Time("expiry", registerRequest.Expiry).
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Msg(msg)
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},
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func(msg string) {
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log.Trace().
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Caller().
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Str("registration_id", registrationId.String()).
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Str("machine_key", machineKey.ShortString()).
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Str("node_key", registerRequest.NodeKey.ShortString()).
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Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
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Str("node", registerRequest.Hostinfo.Hostname).
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Str("followup", registerRequest.Followup).
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Time("expiry", registerRequest.Expiry).
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Msg(msg)
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},
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func(err error, msg string) {
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log.Error().
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Caller().
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Str("registration_id", registrationId.String()).
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Str("machine_key", machineKey.ShortString()).
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Str("node_key", registerRequest.NodeKey.ShortString()).
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Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
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Str("node", registerRequest.Hostinfo.Hostname).
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Str("followup", registerRequest.Followup).
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Time("expiry", registerRequest.Expiry).
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Err(err).
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Msg(msg)
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) (*tailcfg.RegisterResponse, error) {
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node, err := h.db.GetNodeByNodeKey(regReq.NodeKey)
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if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, fmt.Errorf("looking up node in database: %w", err)
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}
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if node != nil {
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resp, err := h.handleExistingNode(node, regReq, machineKey)
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if err != nil {
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return nil, fmt.Errorf("handling existing node: %w", err)
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}
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return resp, nil
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}
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if regReq.Followup != "" {
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// TODO(kradalby): Does this need to return an error of some sort?
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// Maybe if the registration fails down the line it can be sent
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// on the channel and returned here?
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h.waitForFollowup(ctx, regReq)
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}
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if regReq.Auth != nil && regReq.Auth.AuthKey != "" {
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resp, err := h.handleRegisterWithAuthKey(regReq, machineKey)
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if err != nil {
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return nil, fmt.Errorf("handling register with auth key: %w", err)
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}
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return resp, nil
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}
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resp, err := h.handleRegisterInteractive(regReq, machineKey)
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if err != nil {
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return nil, fmt.Errorf("handling register interactive: %w", err)
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}
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return resp, nil
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}
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func (h *Headscale) handleExistingNode(
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node *types.Node,
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regReq tailcfg.RegisterRequest,
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machineKey key.MachinePublic,
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) (*tailcfg.RegisterResponse, error) {
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if node.MachineKey != machineKey {
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return nil, errors.New("node already exists with different machine key")
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}
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expired := node.IsExpired()
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if !expired && !regReq.Expiry.IsZero() {
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requestExpiry := regReq.Expiry
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// The client is trying to extend their key, this is not allowed.
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if requestExpiry.After(time.Now()) {
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return nil, errors.New("extending key is not allowed")
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}
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// If the request expiry is in the past, we consider it a logout.
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if requestExpiry.Before(time.Now()) {
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if node.IsEphemeral() {
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changedNodes, err := h.db.DeleteNode(node, h.nodeNotifier.LikelyConnectedMap())
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if err != nil {
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return nil, fmt.Errorf("deleting ephemeral node: %w", err)
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}
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ctx := types.NotifyCtx(context.Background(), "logout-ephemeral", "na")
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h.nodeNotifier.NotifyAll(ctx, types.StateUpdate{
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Type: types.StatePeerRemoved,
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Removed: []types.NodeID{node.ID},
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})
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if changedNodes != nil {
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h.nodeNotifier.NotifyAll(ctx, types.StateUpdate{
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Type: types.StatePeerChanged,
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ChangeNodes: changedNodes,
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})
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}
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}
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expired = true
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}
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err := h.db.NodeSetExpiry(node.ID, requestExpiry)
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if err != nil {
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return nil, fmt.Errorf("setting node expiry: %w", err)
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}
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ctx := types.NotifyCtx(context.Background(), "logout-expiry", "na")
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h.nodeNotifier.NotifyWithIgnore(ctx, types.StateUpdateExpire(node.ID, requestExpiry), node.ID)
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}
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return &tailcfg.RegisterResponse{
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// TODO(kradalby): Only send for user-owned nodes
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// and not tagged nodes when tags is working.
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User: *node.User.TailscaleUser(),
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Login: *node.User.TailscaleLogin(),
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NodeKeyExpired: expired,
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// Headscale does not implement the concept of machine authorization
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// so we always return true here.
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// Revisit this if #2176 gets implemented.
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MachineAuthorized: true,
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}, nil
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}
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func (h *Headscale) waitForFollowup(
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req *http.Request,
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ctx context.Context,
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regReq tailcfg.RegisterRequest,
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logTrace func(string),
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) {
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logTrace("register request is a followup")
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fu, err := url.Parse(regReq.Followup)
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if err != nil {
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logTrace("failed to parse followup URL")
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return
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}
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followupReg, err := types.RegistrationIDFromString(strings.ReplaceAll(fu.Path, "/register/", ""))
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if err != nil {
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logTrace("followup URL does not contains a valid registration ID")
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return
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}
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logTrace(fmt.Sprintf("followup URL contains a valid registration ID, looking up in cache: %s", followupReg))
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if reg, ok := h.registrationCache.Get(followupReg); ok {
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logTrace("Node is waiting for interactive login")
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select {
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case <-req.Context().Done():
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logTrace("node went away before it was registered")
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case <-ctx.Done():
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return
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case <-reg.Registered:
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logTrace("node has successfully registered")
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return
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}
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}
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}
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// handleRegister is the logic for registering a client.
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func (h *Headscale) handleRegister(
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writer http.ResponseWriter,
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req *http.Request,
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func (h *Headscale) handleRegisterWithAuthKey(
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regReq tailcfg.RegisterRequest,
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machineKey key.MachinePublic,
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) {
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registrationId, err := types.NewRegistrationID()
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) (*tailcfg.RegisterResponse, error) {
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pak, err := h.db.ValidatePreAuthKey(regReq.Auth.AuthKey)
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if err != nil {
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log.Error().
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Caller().
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Err(err).
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Msg("Failed to generate registration ID")
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http.Error(writer, "Internal server error", http.StatusInternalServerError)
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return
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return nil, fmt.Errorf("invalid pre auth key: %w", err)
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}
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logInfo, logTrace, _ := logAuthFunc(regReq, machineKey, registrationId)
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now := time.Now().UTC()
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logTrace("handleRegister called, looking up machine in DB")
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nodeToRegister := types.Node{
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Hostname: regReq.Hostinfo.Hostname,
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UserID: pak.User.ID,
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User: pak.User,
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MachineKey: machineKey,
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NodeKey: regReq.NodeKey,
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Hostinfo: regReq.Hostinfo,
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LastSeen: ptr.To(time.Now()),
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RegisterMethod: util.RegisterMethodAuthKey,
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// TODO(kradalby): Use reqs NodeKey and OldNodeKey as indicators for new registrations vs
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// key refreshes. This will allow us to remove the machineKey from the registration request.
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node, err := h.db.GetNodeByAnyKey(machineKey, regReq.NodeKey, regReq.OldNodeKey)
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logTrace("handleRegister database lookup has returned")
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if errors.Is(err, gorm.ErrRecordNotFound) {
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// If the node has AuthKey set, handle registration via PreAuthKeys
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if regReq.Auth != nil && regReq.Auth.AuthKey != "" {
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h.handleAuthKey(writer, regReq, machineKey)
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return
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}
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// Check if the node is waiting for interactive login.
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if regReq.Followup != "" {
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h.waitForFollowup(req, regReq, logTrace)
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return
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}
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logInfo("Node not found in database, creating new")
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// The node did not have a key to authenticate, which means
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// that we rely on a method that calls back some how (OpenID or CLI)
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// We create the node and then keep it around until a callback
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// happens
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newNode := types.RegisterNode{
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Node: types.Node{
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MachineKey: machineKey,
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Hostname: regReq.Hostinfo.Hostname,
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NodeKey: regReq.NodeKey,
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LastSeen: &now,
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Expiry: &time.Time{},
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},
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Registered: make(chan struct{}),
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}
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if !regReq.Expiry.IsZero() {
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logTrace("Non-zero expiry time requested")
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newNode.Node.Expiry = ®Req.Expiry
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}
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h.registrationCache.Set(
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registrationId,
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newNode,
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)
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h.handleNewNode(writer, regReq, registrationId)
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return
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// TODO(kradalby): This should not be set on the node,
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// they should be looked up through the key, which is
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// attached to the node.
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ForcedTags: pak.Proto().GetAclTags(),
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AuthKey: pak,
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AuthKeyID: &pak.ID,
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}
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// The node is already in the DB. This could mean one of the following:
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// - The node is authenticated and ready to /map
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// - We are doing a key refresh
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// - The node is logged out (or expired) and pending to be authorized. TODO(juan): We need to keep alive the connection here
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if node != nil {
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// (juan): For a while we had a bug where we were not storing the MachineKey for the nodes using the TS2021,
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// due to a misunderstanding of the protocol https://github.com/juanfont/headscale/issues/1054
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// So if we have a not valid MachineKey (but we were able to fetch the node with the NodeKeys), we update it.
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if err != nil || node.MachineKey.IsZero() {
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if err := h.db.NodeSetMachineKey(node, machineKey); err != nil {
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log.Error().
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Caller().
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Str("func", "RegistrationHandler").
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Str("node", node.Hostname).
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Err(err).
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Msg("Error saving machine key to database")
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return
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}
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}
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// If the NodeKey stored in headscale is the same as the key presented in a registration
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// request, then we have a node that is either:
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// - Trying to log out (sending a expiry in the past)
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// - A valid, registered node, looking for /map
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// - Expired node wanting to reauthenticate
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if node.NodeKey.String() == regReq.NodeKey.String() {
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// The client sends an Expiry in the past if the client is requesting to expire the key (aka logout)
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// https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go#L648
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if !regReq.Expiry.IsZero() &&
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regReq.Expiry.UTC().Before(now) {
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h.handleNodeLogOut(writer, *node)
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return
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}
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// If node is not expired, and it is register, we have a already accepted this node,
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// let it proceed with a valid registration
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if !node.IsExpired() {
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h.handleNodeWithValidRegistration(writer, *node)
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return
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}
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}
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// The NodeKey we have matches OldNodeKey, which means this is a refresh after a key expiration
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if node.NodeKey.String() == regReq.OldNodeKey.String() &&
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!node.IsExpired() {
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h.handleNodeKeyRefresh(
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writer,
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regReq,
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*node,
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)
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return
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}
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// When logged out and reauthenticating with OIDC, the OldNodeKey is not passed, but the NodeKey has changed
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if node.NodeKey.String() != regReq.NodeKey.String() &&
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regReq.OldNodeKey.IsZero() && !node.IsExpired() {
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h.handleNodeKeyRefresh(
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writer,
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regReq,
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*node,
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)
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return
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}
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if regReq.Followup != "" {
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h.waitForFollowup(req, regReq, logTrace)
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return
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}
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// The node has expired or it is logged out
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h.handleNodeExpiredOrLoggedOut(writer, regReq, *node, machineKey, registrationId)
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// TODO(juan): RegisterRequest includes an Expiry time, that we could optionally use
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node.Expiry = &time.Time{}
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// TODO(kradalby): do we need to rethink this as part of authflow?
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// If we are here it means the client needs to be reauthorized,
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// we need to make sure the NodeKey matches the one in the request
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// TODO(juan): What happens when using fast user switching between two
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// headscale-managed tailnets?
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node.NodeKey = regReq.NodeKey
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h.registrationCache.Set(
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registrationId,
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types.RegisterNode{
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Node: *node,
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Registered: make(chan struct{}),
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},
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)
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return
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if !regReq.Expiry.IsZero() {
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nodeToRegister.Expiry = ®Req.Expiry
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}
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}
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// handleAuthKey contains the logic to manage auth key client registration
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// When using Noise, the machineKey is Zero.
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func (h *Headscale) handleAuthKey(
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writer http.ResponseWriter,
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registerRequest tailcfg.RegisterRequest,
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machineKey key.MachinePublic,
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) {
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log.Debug().
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Caller().
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Str("node", registerRequest.Hostinfo.Hostname).
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Msgf("Processing auth key for %s", registerRequest.Hostinfo.Hostname)
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resp := tailcfg.RegisterResponse{}
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pak, err := h.db.ValidatePreAuthKey(registerRequest.Auth.AuthKey)
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ipv4, ipv6, err := h.ipAlloc.Next()
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if err != nil {
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log.Error().
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Caller().
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Str("node", registerRequest.Hostinfo.Hostname).
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Err(err).
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Msg("Failed authentication via AuthKey")
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resp.MachineAuthorized = false
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respBody, err := json.Marshal(resp)
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if err != nil {
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log.Error().
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Caller().
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Str("node", registerRequest.Hostinfo.Hostname).
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Err(err).
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Msg("Cannot encode message")
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http.Error(writer, "Internal server error", http.StatusInternalServerError)
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return
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}
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writer.Header().Set("Content-Type", "application/json; charset=utf-8")
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writer.WriteHeader(http.StatusUnauthorized)
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_, err = writer.Write(respBody)
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if err != nil {
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log.Error().
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Caller().
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Err(err).
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Msg("Failed to write response")
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}
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log.Error().
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Caller().
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Str("node", registerRequest.Hostinfo.Hostname).
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Msg("Failed authentication via AuthKey")
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return
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return nil, fmt.Errorf("allocating IPs: %w", err)
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}
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log.Debug().
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Caller().
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Str("node", registerRequest.Hostinfo.Hostname).
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Msg("Authentication key was valid, proceeding to acquire IP addresses")
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nodeKey := registerRequest.NodeKey
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// retrieve node information if it exist
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// The error is not important, because if it does not
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// exist, then this is a new node and we will move
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// on to registration.
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// TODO(kradalby): Use reqs NodeKey and OldNodeKey as indicators for new registrations vs
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// key refreshes. This will allow us to remove the machineKey from the registration request.
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node, _ := h.db.GetNodeByAnyKey(machineKey, registerRequest.NodeKey, registerRequest.OldNodeKey)
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if node != nil {
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log.Trace().
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Caller().
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Str("node", node.Hostname).
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Msg("node was already registered before, refreshing with new auth key")
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node.NodeKey = nodeKey
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if pak.ID != 0 {
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node.AuthKeyID = ptr.To(pak.ID)
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}
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node.Expiry = ®isterRequest.Expiry
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node.User = pak.User
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node.UserID = pak.UserID
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err := h.db.DB.Save(node).Error
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if err != nil {
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log.Error().
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Caller().
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Str("node", node.Hostname).
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Err(err).
|
||||
Msg("failed to save node after logging in with auth key")
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
aclTags := pak.Proto().GetAclTags()
|
||||
if len(aclTags) > 0 {
|
||||
// This conditional preserves the existing behaviour, although SaaS would reset the tags on auth-key login
|
||||
err = h.db.SetTags(node.ID, aclTags)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Strs("aclTags", aclTags).
|
||||
Err(err).
|
||||
Msg("Failed to set tags after refreshing node")
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
ctx := types.NotifyCtx(context.Background(), "handle-authkey", "na")
|
||||
h.nodeNotifier.NotifyAll(ctx, types.StateUpdate{Type: types.StatePeerChanged, ChangeNodes: []types.NodeID{node.ID}})
|
||||
} else {
|
||||
now := time.Now().UTC()
|
||||
|
||||
nodeToRegister := types.Node{
|
||||
Hostname: registerRequest.Hostinfo.Hostname,
|
||||
UserID: pak.User.ID,
|
||||
User: pak.User,
|
||||
MachineKey: machineKey,
|
||||
RegisterMethod: util.RegisterMethodAuthKey,
|
||||
Expiry: ®isterRequest.Expiry,
|
||||
NodeKey: nodeKey,
|
||||
LastSeen: &now,
|
||||
ForcedTags: pak.Proto().GetAclTags(),
|
||||
}
|
||||
|
||||
ipv4, ipv6, err := h.ipAlloc.Next()
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "RegistrationHandler").
|
||||
Str("hostinfo.name", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("failed to allocate IP ")
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
pakID := uint(pak.ID)
|
||||
if pakID != 0 {
|
||||
nodeToRegister.AuthKeyID = ptr.To(pak.ID)
|
||||
}
|
||||
node, err = h.db.RegisterNode(
|
||||
node, err := db.Write(h.db.DB, func(tx *gorm.DB) (*types.Node, error) {
|
||||
node, err := db.RegisterNode(tx,
|
||||
nodeToRegister,
|
||||
ipv4, ipv6,
|
||||
)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("could not register node")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
return nil, fmt.Errorf("registering node: %w", err)
|
||||
}
|
||||
|
||||
err = nodesChangedHook(h.db, h.polMan, h.nodeNotifier)
|
||||
if err != nil {
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
return
|
||||
if !pak.Reusable {
|
||||
err = db.UsePreAuthKey(tx, pak)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("using pre auth key: %w", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
err = h.db.Write(func(tx *gorm.DB) error {
|
||||
return db.UsePreAuthKey(tx, pak)
|
||||
return node, nil
|
||||
})
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to use pre-auth key")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
|
||||
resp.MachineAuthorized = true
|
||||
resp.User = *pak.User.TailscaleUser()
|
||||
// Provide LoginName when registering with pre-auth key
|
||||
// Otherwise it will need to exec `tailscale up` twice to fetch the *LoginName*
|
||||
resp.Login = *pak.User.TailscaleLogin()
|
||||
|
||||
respBody, err := json.Marshal(resp)
|
||||
updateSent, err := nodesChangedHook(h.db, h.polMan, h.nodeNotifier)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("node", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
return
|
||||
return nil, fmt.Errorf("nodes changed hook: %w", err)
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Str("node", registerRequest.Hostinfo.Hostname).
|
||||
Msg("Successfully authenticated via AuthKey")
|
||||
if !updateSent {
|
||||
ctx := types.NotifyCtx(context.Background(), "node updated", node.Hostname)
|
||||
h.nodeNotifier.NotifyAll(ctx, types.StateUpdatePeerAdded(node.ID))
|
||||
}
|
||||
|
||||
return &tailcfg.RegisterResponse{
|
||||
MachineAuthorized: true,
|
||||
NodeKeyExpired: node.IsExpired(),
|
||||
User: *pak.User.TailscaleUser(),
|
||||
Login: *pak.User.TailscaleLogin(),
|
||||
}, nil
|
||||
}
|
||||
|
||||
// handleNewNode returns the authorisation URL to the client based on what type
|
||||
// of registration headscale is configured with.
|
||||
// This url is then showed to the user by the local Tailscale client.
|
||||
func (h *Headscale) handleNewNode(
|
||||
writer http.ResponseWriter,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
registrationId types.RegistrationID,
|
||||
) {
|
||||
logInfo, logTrace, logErr := logAuthFunc(registerRequest, key.MachinePublic{}, registrationId)
|
||||
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The node registration is new, redirect the client to the registration URL
|
||||
logTrace("The node is new, sending auth url")
|
||||
|
||||
resp.AuthURL = h.authProvider.AuthURL(registrationId)
|
||||
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
logErr(err, "Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
logErr(err, "Failed to write response")
|
||||
}
|
||||
|
||||
logInfo(fmt.Sprintf("Successfully sent auth url: %s", resp.AuthURL))
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNodeLogOut(
|
||||
writer http.ResponseWriter,
|
||||
node types.Node,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Info().
|
||||
Str("node", node.Hostname).
|
||||
Msg("Client requested logout")
|
||||
|
||||
now := time.Now()
|
||||
err := h.db.NodeSetExpiry(node.ID, now)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to expire node")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
ctx := types.NotifyCtx(context.Background(), "logout-expiry", "na")
|
||||
h.nodeNotifier.NotifyWithIgnore(ctx, types.StateUpdateExpire(node.ID, now), node.ID)
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.MachineAuthorized = false
|
||||
resp.NodeKeyExpired = true
|
||||
resp.User = *node.User.TailscaleUser()
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
if node.IsEphemeral() {
|
||||
changedNodes, err := h.db.DeleteNode(&node, h.nodeNotifier.LikelyConnectedMap())
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Err(err).
|
||||
Str("node", node.Hostname).
|
||||
Msg("Cannot delete ephemeral node from the database")
|
||||
}
|
||||
|
||||
ctx := types.NotifyCtx(context.Background(), "logout-ephemeral", "na")
|
||||
h.nodeNotifier.NotifyAll(ctx, types.StateUpdate{
|
||||
Type: types.StatePeerRemoved,
|
||||
Removed: []types.NodeID{node.ID},
|
||||
})
|
||||
if changedNodes != nil {
|
||||
h.nodeNotifier.NotifyAll(ctx, types.StateUpdate{
|
||||
Type: types.StatePeerChanged,
|
||||
ChangeNodes: changedNodes,
|
||||
})
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Msg("Successfully logged out")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNodeWithValidRegistration(
|
||||
writer http.ResponseWriter,
|
||||
node types.Node,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The node registration is valid, respond with redirect to /map
|
||||
log.Debug().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Msg("Client is registered and we have the current NodeKey. All clear to /map")
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.MachineAuthorized = true
|
||||
resp.User = *node.User.TailscaleUser()
|
||||
resp.Login = *node.User.TailscaleLogin()
|
||||
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Msg("Node successfully authorized")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNodeKeyRefresh(
|
||||
writer http.ResponseWriter,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
node types.Node,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Msg("We have the OldNodeKey in the database. This is a key refresh")
|
||||
|
||||
err := h.db.Write(func(tx *gorm.DB) error {
|
||||
return db.NodeSetNodeKey(tx, &node, registerRequest.NodeKey)
|
||||
})
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to update machine key in the database")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
resp.AuthURL = ""
|
||||
resp.User = *node.User.TailscaleUser()
|
||||
respBody, err := json.Marshal(resp)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Str("node_key", registerRequest.NodeKey.ShortString()).
|
||||
Str("old_node_key", registerRequest.OldNodeKey.ShortString()).
|
||||
Str("node", node.Hostname).
|
||||
Msg("Node key successfully refreshed")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleNodeExpiredOrLoggedOut(
|
||||
writer http.ResponseWriter,
|
||||
func (h *Headscale) handleRegisterInteractive(
|
||||
regReq tailcfg.RegisterRequest,
|
||||
node types.Node,
|
||||
machineKey key.MachinePublic,
|
||||
registrationId types.RegistrationID,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
if regReq.Auth != nil && regReq.Auth.AuthKey != "" {
|
||||
h.handleAuthKey(writer, regReq, machineKey)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The client has registered before, but has expired or logged out
|
||||
log.Trace().
|
||||
Caller().
|
||||
Str("node", node.Hostname).
|
||||
Str("registration_id", registrationId.String()).
|
||||
Str("node_key", regReq.NodeKey.ShortString()).
|
||||
Str("node_key_old", regReq.OldNodeKey.ShortString()).
|
||||
Msg("Node registration has expired or logged out. Sending a auth url to register")
|
||||
|
||||
resp.AuthURL = h.authProvider.AuthURL(registrationId)
|
||||
|
||||
respBody, err := json.Marshal(resp)
|
||||
) (*tailcfg.RegisterResponse, error) {
|
||||
registrationId, err := types.NewRegistrationID()
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
return nil, fmt.Errorf("generating registration ID: %w", err)
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
newNode := types.RegisterNode{
|
||||
Node: types.Node{
|
||||
Hostname: regReq.Hostinfo.Hostname,
|
||||
MachineKey: machineKey,
|
||||
NodeKey: regReq.NodeKey,
|
||||
Hostinfo: regReq.Hostinfo,
|
||||
LastSeen: ptr.To(time.Now()),
|
||||
},
|
||||
Registered: make(chan struct{}),
|
||||
}
|
||||
|
||||
log.Trace().
|
||||
Caller().
|
||||
Str("registration_id", registrationId.String()).
|
||||
Str("node_key", regReq.NodeKey.ShortString()).
|
||||
Str("node_key_old", regReq.OldNodeKey.ShortString()).
|
||||
Str("node", node.Hostname).
|
||||
Msg("Node logged out. Sent AuthURL for reauthentication")
|
||||
if !regReq.Expiry.IsZero() {
|
||||
newNode.Node.Expiry = ®Req.Expiry
|
||||
}
|
||||
|
||||
h.registrationCache.Set(
|
||||
registrationId,
|
||||
newNode,
|
||||
)
|
||||
|
||||
return &tailcfg.RegisterResponse{
|
||||
AuthURL: h.authProvider.AuthURL(registrationId),
|
||||
}, nil
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue