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Make sure nodes can reauthenticate

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This commit fixes an issue where nodes were not able to reauthenticate.
This commit is contained in:
Kristoffer Dalby 2021-11-22 19:32:11 +00:00
parent 200c10e48c
commit e600ead3e9
3 changed files with 83 additions and 30 deletions
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68
api.go
View File

@ -375,13 +375,13 @@ func (h *Headscale) handleMachineExpired(
Str("handler", "Registration").
Err(err).
Msg("Cannot encode message")
machineRegistrations.WithLabelValues("new", "web", "error", machine.Namespace.Name).
machineRegistrations.WithLabelValues("reauth", "web", "error", machine.Namespace.Name).
Inc()
ctx.String(http.StatusInternalServerError, "")
return
}
machineRegistrations.WithLabelValues("new", "web", "success", machine.Namespace.Name).
machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
Inc()
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
}
@ -503,36 +503,46 @@ func (h *Headscale) handleAuthKey(
return
}
log.Debug().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Msg("Authentication key was valid, proceeding to acquire an IP address")
ip, err := h.getAvailableIP()
if err != nil {
log.Error().
if machine.isRegistered() {
log.Trace().
Caller().
Str("machine", machine.Name).
Msg("machine already registered, reauthenticating")
h.RefreshMachine(&machine, reqisterRequest.Expiry)
} else {
log.Debug().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Msg("Failed to find an available IP")
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
Inc()
Msg("Authentication key was valid, proceeding to acquire an IP address")
ip, err := h.getAvailableIP()
if err != nil {
log.Error().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Msg("Failed to find an available IP")
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
Inc()
return
return
}
log.Info().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Str("ip", ip.String()).
Msgf("Assigning %s to %s", ip, machine.Name)
machine.Expiry = &reqisterRequest.Expiry
machine.AuthKeyID = uint(pak.ID)
machine.IPAddress = ip.String()
machine.NamespaceID = pak.NamespaceID
machine.NodeKey = wgkey.Key(reqisterRequest.NodeKey).
HexString()
// we update it just in case
machine.Registered = true
machine.RegisterMethod = RegisterMethodAuthKey
h.db.Save(&machine)
}
log.Info().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Str("ip", ip.String()).
Msgf("Assigning %s to %s", ip, machine.Name)
machine.AuthKeyID = uint(pak.ID)
machine.IPAddress = ip.String()
machine.NamespaceID = pak.NamespaceID
machine.NodeKey = wgkey.Key(reqisterRequest.NodeKey).
HexString()
// we update it just in case
machine.Registered = true
machine.RegisterMethod = RegisterMethodAuthKey
h.db.Save(&machine)
pak.Used = true
h.db.Save(&pak)
@ -558,6 +568,6 @@ func (h *Headscale) handleAuthKey(
log.Info().
Str("func", "handleAuthKey").
Str("machine", machine.Name).
Str("ip", ip.String()).
Str("ip", machine.IPAddress).
Msg("Successfully authenticated via AuthKey")
}

10
machine.go
View File

@ -270,6 +270,15 @@ func (h *Headscale) ExpireMachine(machine *Machine) {
h.db.Save(machine)
}
// RefreshMachine takes a Machine struct and sets the expire field to now.
func (h *Headscale) RefreshMachine(machine *Machine, expiry time.Time) {
now := time.Now()
machine.LastSuccessfulUpdate = &now
machine.Expiry = &expiry
h.db.Save(machine)
}
// DeleteMachine softs deletes a Machine from the database.
func (h *Headscale) DeleteMachine(machine *Machine) error {
err := h.RemoveSharedMachineFromAllNamespaces(machine)
@ -644,6 +653,7 @@ func (h *Headscale) RegisterMachine(
machine.NamespaceID = namespace.ID
machine.Registered = true
machine.RegisterMethod = RegisterMethodCLI
machine.Expiry = &requestedTime
h.db.Save(&machine)
log.Trace().

35
oidc.go
View File

@ -81,6 +81,11 @@ func (h *Headscale) RegisterOIDC(ctx *gin.Context) {
return
}
log.Trace().
Caller().
Str("machine_key", machineKeyStr).
Msg("Received oidc register call")
randomBlob := make([]byte, randomByteSize)
if _, err := rand.Read(randomBlob); err != nil {
log.Error().
@ -124,7 +129,11 @@ func (h *Headscale) OIDCCallback(ctx *gin.Context) {
return
}
log.Debug().Msgf("AccessToken: %v", oauth2Token.AccessToken)
log.Trace().
Caller().
Str("code", code).
Str("state", state).
Msg("Got oidc callback")
rawIDToken, rawIDTokenOK := oauth2Token.Extra("id_token").(string)
if !rawIDTokenOK {
@ -202,6 +211,29 @@ func (h *Headscale) OIDCCallback(ctx *gin.Context) {
return
}
if machine.isRegistered() {
log.Trace().
Caller().
Str("machine", machine.Name).
Msg("machine already registered, reauthenticating")
h.RefreshMachine(machine, requestedTime)
ctx.Data(http.StatusOK, "text/html; charset=utf-8", []byte(fmt.Sprintf(`
<html>
<body>
<h1>headscale</h1>
<p>
Reuthenticated as %s, you can now close this window.
</p>
</body>
</html>
`, claims.Email)))
return
}
now := time.Now().UTC()
if namespaceName, ok := h.getNamespaceFromEmail(claims.Email); ok {
@ -258,6 +290,7 @@ func (h *Headscale) OIDCCallback(ctx *gin.Context) {
machine.Registered = true
machine.RegisterMethod = RegisterMethodOIDC
machine.LastSuccessfulUpdate = &now
machine.Expiry = &requestedTime
h.db.Save(&machine)
}