mirror of
https://github.com/juanfont/headscale.git
synced 2024-12-23 16:37:34 +00:00
Make legacy protocol use common methods for client registration
This commit is contained in:
Juan Font Alonso
parent
a87a9636e3
commit
e2bffd4f5a
433
api.go
433
api.go
@ -3,16 +3,12 @@ package headscale
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"html/template"
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"net/http"
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"strings"
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"time"
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"github.com/gorilla/mux"
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"github.com/rs/zerolog/log"
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"tailscale.com/tailcfg"
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"tailscale.com/types/key"
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)
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const (
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@ -142,432 +138,3 @@ func (h *Headscale) RegisterWebAPI(
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Msg("Failed to write response")
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}
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}
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func (h *Headscale) handleMachineLogOut(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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machine Machine,
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) {
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resp := tailcfg.RegisterResponse{}
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log.Info().
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Str("machine", machine.Hostname).
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Msg("Client requested logout")
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err := h.ExpireMachine(&machine)
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if err != nil {
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log.Error().
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Caller().
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Str("func", "handleMachineLogOut").
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Err(err).
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Msg("Failed to expire machine")
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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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resp.AuthURL = ""
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resp.MachineAuthorized = false
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resp.User = *machine.Namespace.toUser()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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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("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.StatusOK)
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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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}
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func (h *Headscale) handleMachineValidRegistration(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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machine Machine,
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) {
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resp := tailcfg.RegisterResponse{}
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// The machine registration is valid, respond with redirect to /map
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log.Debug().
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Str("machine", machine.Hostname).
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Msg("Client is registered and we have the current NodeKey. All clear to /map")
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resp.AuthURL = ""
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resp.MachineAuthorized = true
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resp.User = *machine.Namespace.toUser()
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resp.Login = *machine.Namespace.toLogin()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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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("Cannot encode message")
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machineRegistrations.WithLabelValues("update", "web", "error", machine.Namespace.Name).
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Inc()
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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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machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
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Inc()
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writer.Header().Set("Content-Type", "application/json; charset=utf-8")
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writer.WriteHeader(http.StatusOK)
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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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}
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func (h *Headscale) handleMachineExpired(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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registerRequest tailcfg.RegisterRequest,
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machine Machine,
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) {
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resp := tailcfg.RegisterResponse{}
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// The client has registered before, but has expired
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log.Debug().
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Str("machine", machine.Hostname).
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Msg("Machine registration has expired. Sending a authurl to register")
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if registerRequest.Auth.AuthKey != "" {
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h.handleAuthKey(writer, req, machineKey, registerRequest)
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return
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}
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if h.cfg.OIDC.Issuer != "" {
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resp.AuthURL = fmt.Sprintf("%s/oidc/register/%s",
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strings.TrimSuffix(h.cfg.ServerURL, "/"),
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NodePublicKeyStripPrefix(registerRequest.NodeKey))
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} else {
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resp.AuthURL = fmt.Sprintf("%s/register/%s",
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strings.TrimSuffix(h.cfg.ServerURL, "/"),
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NodePublicKeyStripPrefix(registerRequest.NodeKey))
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}
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respBody, err := encode(resp, &machineKey, h.privateKey)
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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("Cannot encode message")
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machineRegistrations.WithLabelValues("reauth", "web", "error", machine.Namespace.Name).
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Inc()
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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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machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
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Inc()
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writer.Header().Set("Content-Type", "application/json; charset=utf-8")
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writer.WriteHeader(http.StatusOK)
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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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}
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func (h *Headscale) handleMachineRefreshKey(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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registerRequest tailcfg.RegisterRequest,
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machine Machine,
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) {
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resp := tailcfg.RegisterResponse{}
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log.Debug().
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Str("machine", machine.Hostname).
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Msg("We have the OldNodeKey in the database. This is a key refresh")
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machine.NodeKey = NodePublicKeyStripPrefix(registerRequest.NodeKey)
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if err := h.db.Save(&machine).Error; 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 update machine key in the database")
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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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resp.AuthURL = ""
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resp.User = *machine.Namespace.toUser()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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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("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.StatusOK)
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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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}
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func (h *Headscale) handleMachineRegistrationNew(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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registerRequest tailcfg.RegisterRequest,
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) {
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resp := tailcfg.RegisterResponse{}
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// The machine registration is new, redirect the client to the registration URL
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log.Debug().
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Caller().
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Str("machine", registerRequest.Hostinfo.Hostname).
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Msg("The node seems to be new, sending auth url")
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if h.cfg.OIDC.Issuer != "" {
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resp.AuthURL = fmt.Sprintf(
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"%s/oidc/register/%s",
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strings.TrimSuffix(h.cfg.ServerURL, "/"),
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NodePublicKeyStripPrefix(registerRequest.NodeKey),
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)
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} else {
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resp.AuthURL = fmt.Sprintf("%s/register/%s",
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strings.TrimSuffix(h.cfg.ServerURL, "/"),
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NodePublicKeyStripPrefix(registerRequest.NodeKey))
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}
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respBody, err := encode(resp, &machineKey, h.privateKey)
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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("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.StatusOK)
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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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}
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// TODO: check if any locks are needed around IP allocation.
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func (h *Headscale) handleAuthKey(
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writer http.ResponseWriter,
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req *http.Request,
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machineKey key.MachinePublic,
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registerRequest tailcfg.RegisterRequest,
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) {
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machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
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log.Debug().
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Str("func", "handleAuthKey").
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Str("machine", 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.checkKeyValidity(registerRequest.Auth.AuthKey)
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if err != nil {
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log.Error().
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Caller().
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Str("func", "handleAuthKey").
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Str("machine", 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 := encode(resp, &machineKey, h.privateKey)
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if err != nil {
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log.Error().
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Caller().
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Str("func", "handleAuthKey").
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Str("machine", 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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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
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Inc()
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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("func", "handleAuthKey").
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Str("machine", registerRequest.Hostinfo.Hostname).
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Msg("Failed authentication via AuthKey")
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if pak != nil {
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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
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Inc()
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} else {
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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", "unknown").Inc()
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}
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return
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}
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log.Debug().
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Str("func", "handleAuthKey").
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Str("machine", registerRequest.Hostinfo.Hostname).
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Msg("Authentication key was valid, proceeding to acquire IP addresses")
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nodeKey := NodePublicKeyStripPrefix(registerRequest.NodeKey)
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// retrieve machine 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 machine and we will move
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// on to registration.
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machine, _ := h.GetMachineByMachineKey(machineKey)
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if machine != nil {
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log.Trace().
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Caller().
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Str("machine", machine.Hostname).
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Msg("machine already registered, refreshing with new auth key")
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machine.NodeKey = nodeKey
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machine.AuthKeyID = uint(pak.ID)
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err := h.RefreshMachine(machine, registerRequest.Expiry)
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if err != nil {
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log.Error().
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Caller().
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Str("machine", machine.Hostname).
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Err(err).
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Msg("Failed to refresh machine")
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return
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}
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} else {
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now := time.Now().UTC()
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givenName, err := h.GenerateGivenName(registerRequest.Hostinfo.Hostname)
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if 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("hostinfo.name", registerRequest.Hostinfo.Hostname).
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Err(err)
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return
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}
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machineToRegister := Machine{
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Hostname: registerRequest.Hostinfo.Hostname,
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GivenName: givenName,
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NamespaceID: pak.Namespace.ID,
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MachineKey: machineKeyStr,
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RegisterMethod: RegisterMethodAuthKey,
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Expiry: ®isterRequest.Expiry,
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NodeKey: nodeKey,
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LastSeen: &now,
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AuthKeyID: uint(pak.ID),
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}
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machine, err = h.RegisterMachine(
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machineToRegister,
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)
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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("could not register machine")
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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
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Inc()
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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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}
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err = h.UsePreAuthKey(pak)
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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 use pre-auth key")
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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
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Inc()
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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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resp.MachineAuthorized = true
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resp.User = *pak.Namespace.toUser()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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if err != nil {
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log.Error().
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Caller().
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Str("func", "handleAuthKey").
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Str("machine", registerRequest.Hostinfo.Hostname).
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Err(err).
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Msg("Cannot encode message")
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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
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Inc()
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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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machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "success", pak.Namespace.Name).
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Inc()
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writer.Header().Set("Content-Type", "application/json; charset=utf-8")
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writer.WriteHeader(http.StatusOK)
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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.Info().
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Str("func", "handleAuthKey").
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Str("machine", registerRequest.Hostinfo.Hostname).
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Str("ips", strings.Join(machine.IPAddresses.ToStringSlice(), ", ")).
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Msg("Successfully authenticated via AuthKey")
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}
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@ -2,11 +2,17 @@ package headscale
|
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|
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import (
|
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"encoding/json"
|
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"errors"
|
||||
"fmt"
|
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"net/http"
|
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"strconv"
|
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"strings"
|
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"time"
|
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|
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"github.com/rs/zerolog/log"
|
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"gorm.io/gorm"
|
||||
"tailscale.com/tailcfg"
|
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"tailscale.com/types/key"
|
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)
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||||
|
||||
const (
|
||||
@ -84,3 +90,657 @@ func (h *Headscale) KeyHandler(
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
}
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||||
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||||
// handleRegisterCommon is the common logic for registering a client in the legacy and Noise protocols
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//
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||||
// When using Noise, the machineKey is Zero.
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func (h *Headscale) handleRegisterCommon(
|
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writer http.ResponseWriter,
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req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machineKey key.MachinePublic,
|
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) {
|
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|
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now := time.Now().UTC()
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machine, err := h.GetMachineByAnyNodeKey(registerRequest.NodeKey, registerRequest.OldNodeKey)
|
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if errors.Is(err, gorm.ErrRecordNotFound) {
|
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|
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// If the machine has AuthKey set, handle registration via PreAuthKeys
|
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if registerRequest.Auth.AuthKey != "" {
|
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h.handleAuthKeyCommon(writer, req, registerRequest, machineKey)
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|
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return
|
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}
|
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|
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// Check if the node is waiting for interactive login.
|
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//
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||||
// TODO(juan): We could use this field to improve our protocol implementation,
|
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// and hold the request until the client closes it, or the interactive
|
||||
// login is completed (i.e., the user registers the machine).
|
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// This is not implemented yet, as it is no strictly required. The only side-effect
|
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// is that the client will hammer headscale with requests until it gets a
|
||||
// successful RegisterResponse.
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if registerRequest.Followup != "" {
|
||||
if _, ok := h.registrationCache.Get(NodePublicKeyStripPrefix(registerRequest.NodeKey)); ok {
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log.Debug().
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||||
Caller().
|
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Str("machine", registerRequest.Hostinfo.Hostname).
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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("follow_up", registerRequest.Followup).
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Bool("noise", machineKey.IsZero()).
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||||
Msg("Machine is waiting for interactive login")
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||||
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||||
ticker := time.NewTicker(registrationHoldoff)
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||||
select {
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||||
case <-req.Context().Done():
|
||||
return
|
||||
case <-ticker.C:
|
||||
h.handleNewMachineCommon(writer, req, registerRequest, machineKey)
|
||||
|
||||
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).
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Msg("New 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: MachinePublicKeyStripPrefix(machineKey),
|
||||
Hostname: registerRequest.Hostinfo.Hostname,
|
||||
GivenName: givenName,
|
||||
NodeKey: NodePublicKeyStripPrefix(registerRequest.NodeKey),
|
||||
LastSeen: &now,
|
||||
Expiry: &time.Time{},
|
||||
}
|
||||
|
||||
if !registerRequest.Expiry.IsZero() {
|
||||
log.Trace().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Time("expiry", registerRequest.Expiry).
|
||||
Msg("Non-zero expiry time requested")
|
||||
newMachine.Expiry = ®isterRequest.Expiry
|
||||
}
|
||||
|
||||
h.registrationCache.Set(
|
||||
newMachine.NodeKey,
|
||||
newMachine,
|
||||
registerCacheExpiration,
|
||||
)
|
||||
|
||||
h.handleNewMachineCommon(writer, req, registerRequest, machineKey)
|
||||
|
||||
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.handleMachineLogOutCommon(writer, req, *machine, machineKey)
|
||||
|
||||
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.handleMachineValidRegistrationCommon(writer, req, *machine, machineKey)
|
||||
|
||||
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.handleMachineRefreshKeyCommon(
|
||||
writer,
|
||||
req,
|
||||
registerRequest,
|
||||
*machine,
|
||||
machineKey,
|
||||
)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The machine has expired
|
||||
h.handleMachineExpiredCommon(writer, req, registerRequest, *machine, machineKey)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// handleAuthKeyCommon contains the logic to manage auth key client registration
|
||||
// It is used both by the legacy and the new Noise protocol.
|
||||
// When using Noise, the machineKey is Zero.
|
||||
//
|
||||
// TODO: check if any locks are needed around IP allocation.
|
||||
func (h *Headscale) handleAuthKeyCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
log.Debug().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Msgf("Processing auth key for %s", registerRequest.Hostinfo.Hostname)
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
pak, err := h.checkKeyValidity(registerRequest.Auth.AuthKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("Failed authentication via AuthKey")
|
||||
resp.MachineAuthorized = false
|
||||
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusUnauthorized)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Error().
|
||||
Caller().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msg("Failed authentication via AuthKey")
|
||||
|
||||
if pak != nil {
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
} else {
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", "unknown").Inc()
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
log.Debug().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("machine was already registered before, 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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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: MachinePublicKeyStripPrefix(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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("could not register machine")
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
err = h.UsePreAuthKey(pak)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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()
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "success", pak.Namespace.Name).
|
||||
Inc()
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Str("func", "handleAuthKeyCommon").
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Str("ips", strings.Join(machine.IPAddresses.ToStringSlice(), ", ")).
|
||||
Msg("Successfully authenticated via AuthKey")
|
||||
}
|
||||
|
||||
// handleNewMachineCommon exposes for both legacy and Noise the functionality to get a URL
|
||||
// for authorizing the machine. This url is then showed to the user by the local Tailscale client.
|
||||
func (h *Headscale) handleNewMachineCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The machine registration is new, redirect the client to the registration URL
|
||||
log.Debug().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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))
|
||||
}
|
||||
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", registerRequest.Hostinfo.Hostname).
|
||||
Msg("Successfully sent auth url")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleMachineLogOutCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
machine Machine,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Info().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Client requested logout")
|
||||
|
||||
err := h.ExpireMachine(&machine)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("func", "handleMachineLogOutCommon").
|
||||
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()
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Caller().
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Successfully logged out")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleMachineValidRegistrationCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
machine Machine,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The machine registration is valid, respond with redirect to /map
|
||||
log.Debug().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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()
|
||||
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
machineRegistrations.WithLabelValues("update", "web", "error", machine.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
|
||||
Inc()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Machine successfully authorized")
|
||||
}
|
||||
|
||||
func (h *Headscale) handleMachineRefreshKeyCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machine Machine,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
log.Debug().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("We have the OldNodeKey in the database. This is a key refresh")
|
||||
machine.NodeKey = NodePublicKeyStripPrefix(registerRequest.NodeKey)
|
||||
|
||||
if err := h.db.Save(&machine).Error; 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 = *machine.Namespace.toUser()
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
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().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("node_key", registerRequest.NodeKey.ShortString()).
|
||||
Str("old_node_key", registerRequest.OldNodeKey.ShortString()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Machine successfully refreshed")
|
||||
|
||||
}
|
||||
|
||||
func (h *Headscale) handleMachineExpiredCommon(
|
||||
writer http.ResponseWriter,
|
||||
req *http.Request,
|
||||
registerRequest tailcfg.RegisterRequest,
|
||||
machine Machine,
|
||||
machineKey key.MachinePublic,
|
||||
) {
|
||||
resp := tailcfg.RegisterResponse{}
|
||||
|
||||
// The client has registered before, but has expired
|
||||
log.Debug().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Machine registration has expired. Sending a authurl to register")
|
||||
|
||||
if registerRequest.Auth.AuthKey != "" {
|
||||
h.handleAuthKeyCommon(writer, req, registerRequest, machineKey)
|
||||
|
||||
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))
|
||||
}
|
||||
|
||||
respBody, err := h.marshalResponse(resp, machineKey)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Cannot encode message")
|
||||
machineRegistrations.WithLabelValues("reauth", "web", "error", machine.Namespace.Name).
|
||||
Inc()
|
||||
http.Error(writer, "Internal server error", http.StatusInternalServerError)
|
||||
|
||||
return
|
||||
}
|
||||
machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
|
||||
Inc()
|
||||
|
||||
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
_, err = writer.Write(respBody)
|
||||
if err != nil {
|
||||
log.Error().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Err(err).
|
||||
Msg("Failed to write response")
|
||||
}
|
||||
|
||||
log.Info().
|
||||
Caller().
|
||||
Bool("noise", machineKey.IsZero()).
|
||||
Str("machine", machine.Hostname).
|
||||
Msg("Auth URL for reauthenticate successfully sent")
|
||||
}
|
||||
|
||||
@ -1,14 +1,11 @@
|
||||
package headscale
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
"net/http"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/mux"
|
||||
"github.com/rs/zerolog/log"
|
||||
"gorm.io/gorm"
|
||||
"tailscale.com/tailcfg"
|
||||
"tailscale.com/types/key"
|
||||
)
|
||||
@ -57,143 +54,6 @@ func (h *Headscale) RegistrationHandler(
|
||||
return
|
||||
}
|
||||
|
||||
now := time.Now().UTC()
|
||||
machine, err := h.GetMachineByMachineKey(machineKey)
|
||||
if errors.Is(err, gorm.ErrRecordNotFound) {
|
||||
machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
|
||||
h.handleRegisterCommon(writer, req, registerRequest, machineKey)
|
||||
|
||||
// If the machine has AuthKey set, handle registration via PreAuthKeys
|
||||
if registerRequest.Auth.AuthKey != "" {
|
||||
h.handleAuthKey(writer, req, machineKey, 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.handleMachineRegistrationNew(writer, req, machineKey, 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 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: machineKeyStr,
|
||||
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(
|
||||
newMachine.NodeKey,
|
||||
newMachine,
|
||||
registerCacheExpiration,
|
||||
)
|
||||
|
||||
h.handleMachineRegistrationNew(writer, req, machineKey, 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.handleMachineLogOut(writer, req, machineKey, *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.handleMachineValidRegistration(writer, req, machineKey, *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.handleMachineRefreshKey(
|
||||
writer,
|
||||
req,
|
||||
machineKey,
|
||||
registerRequest,
|
||||
*machine,
|
||||
)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The machine has expired
|
||||
h.handleMachineExpired(writer, req, machineKey, registerRequest, *machine)
|
||||
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user