2020-06-21 10:32:08 +00:00
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package headscale
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import (
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2021-12-23 02:43:53 +00:00
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"bytes"
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2020-06-21 10:32:08 +00:00
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"encoding/binary"
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"encoding/json"
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2021-06-24 13:44:19 +00:00
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"errors"
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2020-06-21 10:32:08 +00:00
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"fmt"
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2021-12-23 02:43:53 +00:00
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"html/template"
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2020-06-21 10:32:08 +00:00
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"io"
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"net/http"
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2022-03-27 09:41:53 +00:00
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"strconv"
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2021-10-08 09:43:52 +00:00
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"strings"
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2020-06-21 10:32:08 +00:00
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"time"
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"github.com/gin-gonic/gin"
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"github.com/klauspost/compress/zstd"
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2021-11-13 08:39:04 +00:00
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"github.com/rs/zerolog/log"
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2021-06-24 13:44:19 +00:00
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"gorm.io/gorm"
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2020-06-21 10:32:08 +00:00
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"tailscale.com/tailcfg"
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2021-11-26 23:30:42 +00:00
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"tailscale.com/types/key"
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2020-06-21 10:32:08 +00:00
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)
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2021-11-18 08:49:55 +00:00
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const (
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2021-11-22 19:32:52 +00:00
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ErrRegisterMethodCLIDoesNotSupportExpire = Error(
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"machines registered with CLI does not support expire",
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)
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2021-11-18 08:49:55 +00:00
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)
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2021-11-14 17:31:51 +00:00
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2022-03-27 09:41:53 +00:00
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const (
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reservedResponseHeaderSize = 4
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RegisterMethodAuthKey = "authkey"
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RegisterMethodOIDC = "oidc"
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RegisterMethodCLI = "cli"
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// The CapabilityVersion is used by Tailscale clients to indicate
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// their codebase version. Tailscale clients can communicate over TS2021
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// from CapabilityVersion 28.
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// See https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go
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NoiseCapabilityVersion = 28
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)
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2021-02-27 23:58:09 +00:00
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// KeyHandler provides the Headscale pub key
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2021-11-13 08:39:04 +00:00
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// Listens in /key.
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2021-11-14 19:32:03 +00:00
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func (h *Headscale) KeyHandler(ctx *gin.Context) {
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2022-03-27 09:41:53 +00:00
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// New Tailscale clients send a 'v' parameter to indicate the CurrentCapabilityVersion
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v := ctx.Query("v")
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if v != "" {
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clientCapabilityVersion, err := strconv.Atoi(v)
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if err != nil {
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ctx.String(http.StatusBadRequest, "Invalid version")
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return
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}
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if clientCapabilityVersion >= NoiseCapabilityVersion {
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// Tailscale has a different key for the TS2021 protocol. Not sure why.
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resp := tailcfg.OverTLSPublicKeyResponse{
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LegacyPublicKey: h.privateKey.Public(),
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PublicKey: h.noisePrivateKey.Public(),
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}
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ctx.JSON(http.StatusOK, resp)
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return
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}
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}
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// Old clients don't send a 'v' parameter, so we send the legacy public key
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2021-11-14 19:32:03 +00:00
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ctx.Data(
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http.StatusOK,
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"text/plain; charset=utf-8",
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2021-11-28 09:17:18 +00:00
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[]byte(MachinePublicKeyStripPrefix(h.privateKey.Public())),
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2021-11-14 19:32:03 +00:00
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)
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2020-06-21 10:32:08 +00:00
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}
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2021-12-23 02:43:53 +00:00
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type registerWebAPITemplateConfig struct {
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Key string
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}
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2021-02-27 23:58:09 +00:00
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2021-12-23 02:43:53 +00:00
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var registerWebAPITemplate = template.Must(
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2022-03-08 08:34:46 +00:00
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template.New("registerweb").Parse(`
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<html>
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<head>
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<title>Registration - Headscale</title>
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</head>
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2021-02-27 23:58:09 +00:00
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<body>
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2022-03-08 08:34:46 +00:00
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<h1>headscale</h1>
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<h2>Machine registration</h2>
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<p>
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Run the command below in the headscale server to add this machine to your network:
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</p>
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<pre><code>headscale -n NAMESPACE nodes register --key {{.Key}}</code></pre>
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2021-02-27 23:58:09 +00:00
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</body>
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2022-03-08 08:34:46 +00:00
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</html>
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`))
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2021-12-23 02:43:53 +00:00
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// RegisterWebAPI shows a simple message in the browser to point to the CLI
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// Listens in /register.
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func (h *Headscale) RegisterWebAPI(ctx *gin.Context) {
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machineKeyStr := ctx.Query("key")
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if machineKeyStr == "" {
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ctx.String(http.StatusBadRequest, "Wrong params")
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return
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}
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var content bytes.Buffer
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if err := registerWebAPITemplate.Execute(&content, registerWebAPITemplateConfig{
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Key: machineKeyStr,
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}); err != nil {
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log.Error().
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Str("func", "RegisterWebAPI").
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Err(err).
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Msg("Could not render register web API template")
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ctx.Data(
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http.StatusInternalServerError,
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"text/html; charset=utf-8",
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[]byte("Could not render register web API template"),
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)
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}
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2021-05-24 19:59:03 +00:00
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2021-12-23 02:43:53 +00:00
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ctx.Data(http.StatusOK, "text/html; charset=utf-8", content.Bytes())
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2021-02-27 23:58:09 +00:00
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}
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// RegistrationHandler handles the actual registration process of a machine
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2021-11-13 08:39:04 +00:00
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// Endpoint /machine/:id.
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2021-11-14 19:32:03 +00:00
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func (h *Headscale) RegistrationHandler(ctx *gin.Context) {
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body, _ := io.ReadAll(ctx.Request.Body)
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machineKeyStr := ctx.Param("id")
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2021-11-26 23:50:42 +00:00
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var machineKey key.MachinePublic
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2021-11-27 20:25:12 +00:00
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err := machineKey.UnmarshalText([]byte(MachinePublicKeyEnsurePrefix(machineKeyStr)))
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2020-06-21 10:32:08 +00:00
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if err != nil {
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2021-08-05 17:11:26 +00:00
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log.Error().
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2021-11-26 23:30:42 +00:00
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Caller().
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2021-08-05 17:11:26 +00:00
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Err(err).
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Msg("Cannot parse machine key")
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2021-10-10 09:22:42 +00:00
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machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
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2021-11-14 19:32:03 +00:00
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ctx.String(http.StatusInternalServerError, "Sad!")
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2021-11-14 15:46:09 +00:00
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2020-06-21 10:32:08 +00:00
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return
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}
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req := tailcfg.RegisterRequest{}
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2021-11-14 19:32:03 +00:00
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err = decode(body, &req, &machineKey, h.privateKey)
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2020-06-21 10:32:08 +00:00
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if err != nil {
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2021-08-05 17:11:26 +00:00
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log.Error().
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2021-11-26 23:30:42 +00:00
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Caller().
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2021-08-05 17:11:26 +00:00
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Err(err).
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Msg("Cannot decode message")
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2021-10-10 09:22:42 +00:00
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machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
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2021-11-14 19:32:03 +00:00
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ctx.String(http.StatusInternalServerError, "Very sad!")
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2021-11-14 15:46:09 +00:00
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2020-06-21 10:32:08 +00:00
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return
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}
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2021-05-05 22:59:26 +00:00
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2021-08-18 22:24:22 +00:00
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now := time.Now().UTC()
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2021-11-26 23:30:42 +00:00
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machine, err := h.GetMachineByMachineKey(machineKey)
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2021-10-10 09:22:42 +00:00
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if errors.Is(err, gorm.ErrRecordNotFound) {
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2021-08-05 19:57:47 +00:00
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log.Info().Str("machine", req.Hostinfo.Hostname).Msg("New machine")
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2022-02-28 08:06:39 +00:00
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machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
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// If the machine has AuthKey set, handle registration via PreAuthKeys
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if req.Auth.AuthKey != "" {
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h.handleAuthKey(ctx, machineKey, req)
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return
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}
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2022-03-07 21:55:54 +00:00
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hname, err := NormalizeToFQDNRules(
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2022-03-07 21:46:29 +00:00
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req.Hostinfo.Hostname,
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h.cfg.OIDC.StripEmaildomain,
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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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Str("func", "RegistrationHandler").
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Str("hostinfo.name", req.Hostinfo.Hostname).
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Err(err)
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2022-03-07 22:20:30 +00:00
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2022-03-07 21:46:29 +00:00
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return
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}
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2022-02-28 08:06:39 +00:00
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// The machine 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 machine and then keep it around until a callback
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// happens
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2021-10-10 09:22:42 +00:00
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newMachine := Machine{
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2022-02-28 08:06:39 +00:00
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MachineKey: machineKeyStr,
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2022-03-07 21:46:29 +00:00
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Name: hname,
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2022-02-28 08:06:39 +00:00
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NodeKey: NodePublicKeyStripPrefix(req.NodeKey),
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LastSeen: &now,
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2022-03-02 07:15:20 +00:00
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Expiry: &time.Time{},
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2021-06-05 10:13:55 +00:00
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}
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2021-11-14 15:46:09 +00:00
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2022-02-28 22:42:30 +00:00
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if !req.Expiry.IsZero() {
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log.Trace().
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Caller().
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Str("machine", req.Hostinfo.Hostname).
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Time("expiry", req.Expiry).
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Msg("Non-zero expiry time requested")
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newMachine.Expiry = &req.Expiry
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}
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2022-02-28 08:06:39 +00:00
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h.registrationCache.Set(
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machineKeyStr,
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newMachine,
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2022-02-28 22:42:30 +00:00
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registerCacheExpiration,
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2022-02-28 08:06:39 +00:00
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)
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h.handleMachineRegistrationNew(ctx, machineKey, req)
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2022-02-28 16:34:50 +00:00
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2022-02-28 08:06:39 +00:00
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return
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2021-06-05 10:13:55 +00:00
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}
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2022-02-28 08:06:39 +00:00
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// The machine is already registered, so we need to pass through reauth or key update.
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if machine != nil {
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2021-11-21 13:59:24 +00:00
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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 machine, looking for the node map
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// - Expired machine wanting to reauthenticate
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2021-11-28 08:23:45 +00:00
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if machine.NodeKey == NodePublicKeyStripPrefix(req.NodeKey) {
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2021-11-21 13:59:24 +00:00
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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 !req.Expiry.IsZero() && req.Expiry.UTC().Before(now) {
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2021-11-21 14:00:48 +00:00
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h.handleMachineLogOut(ctx, machineKey, *machine)
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2021-11-21 13:59:24 +00:00
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return
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}
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// If machine is not expired, and is register, we have a already accepted this machine,
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// let it proceed with a valid registration
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if !machine.isExpired() {
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h.handleMachineValidRegistration(ctx, machineKey, *machine)
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return
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}
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2021-10-08 09:43:52 +00:00
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}
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2021-11-21 13:59:24 +00:00
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// The NodeKey we have matches OldNodeKey, which means this is a refresh after a key expiration
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2021-11-28 08:23:45 +00:00
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if machine.NodeKey == NodePublicKeyStripPrefix(req.OldNodeKey) &&
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2021-11-21 13:59:24 +00:00
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!machine.isExpired() {
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h.handleMachineRefreshKey(ctx, machineKey, req, *machine)
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2021-11-14 15:46:09 +00:00
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2020-06-21 10:32:08 +00:00
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return
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}
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2021-11-21 21:14:13 +00:00
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// The machine has expired
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2021-11-24 12:16:56 +00:00
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h.handleMachineExpired(ctx, machineKey, req, *machine)
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2021-11-21 21:14:13 +00:00
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return
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2020-06-21 10:32:08 +00:00
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}
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}
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2021-11-13 08:36:45 +00:00
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func (h *Headscale) getMapResponse(
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2021-11-26 23:30:42 +00:00
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machineKey key.MachinePublic,
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2021-11-13 08:36:45 +00:00
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req tailcfg.MapRequest,
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2021-11-14 19:32:03 +00:00
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machine *Machine,
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2021-11-13 08:36:45 +00:00
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) ([]byte, error) {
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2021-08-05 20:47:06 +00:00
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log.Trace().
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Str("func", "getMapResponse").
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Str("machine", req.Hostinfo.Hostname).
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Msg("Creating Map response")
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2021-11-14 19:32:03 +00:00
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node, err := machine.toNode(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
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2020-06-21 10:32:08 +00:00
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if err != nil {
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2021-08-05 17:11:26 +00:00
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log.Error().
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2021-11-26 23:30:42 +00:00
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Caller().
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2021-08-05 19:57:47 +00:00
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Str("func", "getMapResponse").
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2021-08-05 17:11:26 +00:00
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Err(err).
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Msg("Cannot convert to node")
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2021-11-14 15:46:09 +00:00
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2020-06-21 10:32:08 +00:00
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return nil, err
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}
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2021-10-02 20:58:28 +00:00
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2021-11-22 19:51:16 +00:00
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peers, err := h.getValidPeers(machine)
|
2020-06-21 10:32:08 +00:00
|
|
|
if err != nil {
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "getMapResponse").
|
2021-08-05 17:11:26 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot fetch peers")
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2020-06-21 10:32:08 +00:00
|
|
|
return nil, err
|
|
|
|
|
}
|
2021-07-11 14:39:19 +00:00
|
|
|
|
2021-11-14 19:32:03 +00:00
|
|
|
profiles := getMapResponseUserProfiles(*machine, peers)
|
2021-07-11 14:39:19 +00:00
|
|
|
|
2021-10-04 21:49:16 +00:00
|
|
|
nodePeers, err := peers.toNodes(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
|
2021-10-02 21:03:34 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-10-02 21:03:34 +00:00
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed to convert peers to Tailscale nodes")
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2021-10-02 21:03:34 +00:00
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
|
2021-11-14 17:03:21 +00:00
|
|
|
dnsConfig := getMapResponseDNSConfig(
|
2021-11-13 08:36:45 +00:00
|
|
|
h.cfg.DNSConfig,
|
|
|
|
|
h.cfg.BaseDomain,
|
2021-11-14 19:32:03 +00:00
|
|
|
*machine,
|
2021-11-13 08:36:45 +00:00
|
|
|
peers,
|
|
|
|
|
)
|
2021-10-02 10:13:19 +00:00
|
|
|
|
2020-06-21 10:32:08 +00:00
|
|
|
resp := tailcfg.MapResponse{
|
2021-10-02 09:20:42 +00:00
|
|
|
KeepAlive: false,
|
|
|
|
|
Node: node,
|
2021-10-04 21:43:42 +00:00
|
|
|
Peers: nodePeers,
|
2021-10-02 10:13:19 +00:00
|
|
|
DNSConfig: dnsConfig,
|
2021-10-02 09:20:42 +00:00
|
|
|
Domain: h.cfg.BaseDomain,
|
2021-11-04 22:18:06 +00:00
|
|
|
PacketFilter: h.aclRules,
|
2021-10-22 16:56:00 +00:00
|
|
|
DERPMap: h.DERPMap,
|
2021-10-17 10:07:01 +00:00
|
|
|
UserProfiles: profiles,
|
2021-02-23 23:31:58 +00:00
|
|
|
}
|
2021-10-17 10:07:01 +00:00
|
|
|
|
2021-08-13 09:33:19 +00:00
|
|
|
log.Trace().
|
|
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Str("machine", req.Hostinfo.Hostname).
|
2021-10-05 16:51:42 +00:00
|
|
|
// Interface("payload", resp).
|
2021-08-13 09:33:19 +00:00
|
|
|
Msgf("Generated map response: %s", tailMapResponseToString(resp))
|
2020-06-21 10:32:08 +00:00
|
|
|
|
|
|
|
|
var respBody []byte
|
|
|
|
|
if req.Compress == "zstd" {
|
2022-02-14 14:26:54 +00:00
|
|
|
src, err := json.Marshal(resp)
|
|
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
|
|
|
|
Caller().
|
|
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed to marshal response for the client")
|
|
|
|
|
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
2021-08-13 09:33:19 +00:00
|
|
|
|
2020-06-21 10:32:08 +00:00
|
|
|
encoder, _ := zstd.NewWriter(nil)
|
|
|
|
|
srcCompressed := encoder.EncodeAll(src, nil)
|
2021-11-26 23:30:42 +00:00
|
|
|
respBody = h.privateKey.SealTo(machineKey, srcCompressed)
|
2020-06-21 10:32:08 +00:00
|
|
|
} else {
|
2021-11-14 19:32:03 +00:00
|
|
|
respBody, err = encode(resp, &machineKey, h.privateKey)
|
2020-06-21 10:32:08 +00:00
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
// declare the incoming size on the first 4 bytes
|
2021-11-15 17:24:24 +00:00
|
|
|
data := make([]byte, reservedResponseHeaderSize)
|
2020-06-21 10:32:08 +00:00
|
|
|
binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
|
|
|
|
|
data = append(data, respBody...)
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2021-10-04 17:39:01 +00:00
|
|
|
return data, nil
|
2020-06-21 10:32:08 +00:00
|
|
|
}
|
|
|
|
|
|
2021-11-13 08:36:45 +00:00
|
|
|
func (h *Headscale) getMapKeepAliveResponse(
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-14 19:32:03 +00:00
|
|
|
mapRequest tailcfg.MapRequest,
|
2021-11-13 08:36:45 +00:00
|
|
|
) ([]byte, error) {
|
2021-11-14 19:32:03 +00:00
|
|
|
mapResponse := tailcfg.MapResponse{
|
2020-06-21 10:32:08 +00:00
|
|
|
KeepAlive: true,
|
|
|
|
|
}
|
|
|
|
|
var respBody []byte
|
|
|
|
|
var err error
|
2021-11-14 19:32:03 +00:00
|
|
|
if mapRequest.Compress == "zstd" {
|
2022-02-14 14:26:54 +00:00
|
|
|
src, err := json.Marshal(mapResponse)
|
|
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
|
|
|
|
Caller().
|
|
|
|
|
Str("func", "getMapKeepAliveResponse").
|
|
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed to marshal keepalive response for the client")
|
|
|
|
|
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
2020-06-21 10:32:08 +00:00
|
|
|
encoder, _ := zstd.NewWriter(nil)
|
|
|
|
|
srcCompressed := encoder.EncodeAll(src, nil)
|
2021-11-26 23:30:42 +00:00
|
|
|
respBody = h.privateKey.SealTo(machineKey, srcCompressed)
|
2020-06-21 10:32:08 +00:00
|
|
|
} else {
|
2021-11-14 19:32:03 +00:00
|
|
|
respBody, err = encode(mapResponse, &machineKey, h.privateKey)
|
2020-06-21 10:32:08 +00:00
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
}
|
2021-11-15 17:24:24 +00:00
|
|
|
data := make([]byte, reservedResponseHeaderSize)
|
2020-06-21 10:32:08 +00:00
|
|
|
binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
|
|
|
|
|
data = append(data, respBody...)
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2021-10-04 17:39:01 +00:00
|
|
|
return data, nil
|
2020-06-21 10:32:08 +00:00
|
|
|
}
|
|
|
|
|
|
2021-11-17 22:39:41 +00:00
|
|
|
func (h *Headscale) handleMachineLogOut(
|
|
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-17 22:39:41 +00:00
|
|
|
machine Machine,
|
|
|
|
|
) {
|
|
|
|
|
resp := tailcfg.RegisterResponse{}
|
|
|
|
|
|
|
|
|
|
log.Info().
|
|
|
|
|
Str("machine", machine.Name).
|
|
|
|
|
Msg("Client requested logout")
|
|
|
|
|
|
2021-11-21 13:59:24 +00:00
|
|
|
h.ExpireMachine(&machine)
|
2021-11-17 22:39:41 +00:00
|
|
|
|
|
|
|
|
resp.AuthURL = ""
|
|
|
|
|
resp.MachineAuthorized = false
|
|
|
|
|
resp.User = *machine.Namespace.toUser()
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-11-17 22:39:41 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
|
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (h *Headscale) handleMachineValidRegistration(
|
|
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-17 22:39:41 +00:00
|
|
|
machine Machine,
|
|
|
|
|
) {
|
|
|
|
|
resp := tailcfg.RegisterResponse{}
|
|
|
|
|
|
|
|
|
|
// The machine registration is valid, respond with redirect to /map
|
|
|
|
|
log.Debug().
|
|
|
|
|
Str("machine", machine.Name).
|
|
|
|
|
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()
|
|
|
|
|
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-11-17 22:39:41 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
|
|
|
|
machineRegistrations.WithLabelValues("update", "web", "error", machine.Namespace.Name).
|
|
|
|
|
Inc()
|
|
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
|
|
|
|
|
Inc()
|
|
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (h *Headscale) handleMachineExpired(
|
|
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-24 12:15:55 +00:00
|
|
|
registerRequest tailcfg.RegisterRequest,
|
2021-11-17 22:39:41 +00:00
|
|
|
machine Machine,
|
|
|
|
|
) {
|
|
|
|
|
resp := tailcfg.RegisterResponse{}
|
|
|
|
|
|
|
|
|
|
// The client has registered before, but has expired
|
|
|
|
|
log.Debug().
|
|
|
|
|
Str("machine", machine.Name).
|
|
|
|
|
Msg("Machine registration has expired. Sending a authurl to register")
|
|
|
|
|
|
2021-11-24 12:15:32 +00:00
|
|
|
if registerRequest.Auth.AuthKey != "" {
|
2022-02-28 08:06:39 +00:00
|
|
|
h.handleAuthKey(ctx, machineKey, registerRequest)
|
2021-11-24 12:15:32 +00:00
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
|
2021-11-17 22:39:41 +00:00
|
|
|
if h.cfg.OIDC.Issuer != "" {
|
|
|
|
|
resp.AuthURL = fmt.Sprintf("%s/oidc/register/%s",
|
2021-11-26 23:30:42 +00:00
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.String())
|
2021-11-17 22:39:41 +00:00
|
|
|
} else {
|
|
|
|
|
resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
|
2021-11-26 23:30:42 +00:00
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.String())
|
2021-11-17 22:39:41 +00:00
|
|
|
}
|
|
|
|
|
|
2021-11-24 12:15:32 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-11-17 22:39:41 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-22 19:32:11 +00:00
|
|
|
machineRegistrations.WithLabelValues("reauth", "web", "error", machine.Namespace.Name).
|
2021-11-17 22:39:41 +00:00
|
|
|
Inc()
|
|
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
2021-11-22 19:32:11 +00:00
|
|
|
machineRegistrations.WithLabelValues("reauth", "web", "success", machine.Namespace.Name).
|
2021-11-17 22:39:41 +00:00
|
|
|
Inc()
|
|
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (h *Headscale) handleMachineRefreshKey(
|
|
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-22 19:35:24 +00:00
|
|
|
registerRequest tailcfg.RegisterRequest,
|
2021-11-17 22:39:41 +00:00
|
|
|
machine Machine,
|
|
|
|
|
) {
|
|
|
|
|
resp := tailcfg.RegisterResponse{}
|
|
|
|
|
|
|
|
|
|
log.Debug().
|
|
|
|
|
Str("machine", machine.Name).
|
|
|
|
|
Msg("We have the OldNodeKey in the database. This is a key refresh")
|
2021-11-26 23:30:42 +00:00
|
|
|
machine.NodeKey = NodePublicKeyStripPrefix(registerRequest.NodeKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
h.db.Save(&machine)
|
|
|
|
|
|
|
|
|
|
resp.AuthURL = ""
|
|
|
|
|
resp.User = *machine.Namespace.toUser()
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-11-17 22:39:41 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
|
|
|
|
ctx.String(http.StatusInternalServerError, "Extremely sad!")
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
func (h *Headscale) handleMachineRegistrationNew(
|
|
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-22 19:35:24 +00:00
|
|
|
registerRequest tailcfg.RegisterRequest,
|
2021-11-17 22:39:41 +00:00
|
|
|
) {
|
|
|
|
|
resp := tailcfg.RegisterResponse{}
|
|
|
|
|
|
|
|
|
|
// The machine registration is new, redirect the client to the registration URL
|
|
|
|
|
log.Debug().
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2021-11-17 22:39:41 +00:00
|
|
|
Msg("The node is sending us a new NodeKey, sending auth url")
|
|
|
|
|
if h.cfg.OIDC.Issuer != "" {
|
|
|
|
|
resp.AuthURL = fmt.Sprintf(
|
|
|
|
|
"%s/oidc/register/%s",
|
|
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"),
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey.String(),
|
2021-11-17 22:39:41 +00:00
|
|
|
)
|
|
|
|
|
} else {
|
|
|
|
|
resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
|
2021-11-26 23:30:42 +00:00
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"), MachinePublicKeyStripPrefix(machineKey))
|
2021-11-17 22:39:41 +00:00
|
|
|
}
|
|
|
|
|
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-11-17 22:39:41 +00:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-11-17 22:39:41 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
|
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
|
|
|
|
}
|
|
|
|
|
|
2022-01-16 13:16:59 +00:00
|
|
|
// TODO: check if any locks are needed around IP allocation.
|
2021-10-22 16:56:00 +00:00
|
|
|
func (h *Headscale) handleAuthKey(
|
2021-11-14 19:32:03 +00:00
|
|
|
ctx *gin.Context,
|
2021-11-26 23:30:42 +00:00
|
|
|
machineKey key.MachinePublic,
|
2021-11-22 19:35:24 +00:00
|
|
|
registerRequest tailcfg.RegisterRequest,
|
2021-10-22 16:56:00 +00:00
|
|
|
) {
|
2022-02-28 08:06:39 +00:00
|
|
|
machineKeyStr := MachinePublicKeyStripPrefix(machineKey)
|
|
|
|
|
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Debug().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-22 19:35:24 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
|
|
|
|
Msgf("Processing auth key for %s", registerRequest.Hostinfo.Hostname)
|
2021-05-05 22:59:26 +00:00
|
|
|
resp := tailcfg.RegisterResponse{}
|
2022-02-28 08:06:39 +00:00
|
|
|
|
2021-11-22 19:35:24 +00:00
|
|
|
pak, err := h.checkKeyValidity(registerRequest.Auth.AuthKey)
|
2021-06-05 10:13:55 +00:00
|
|
|
if err != nil {
|
2021-10-04 16:03:44 +00:00
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-10-04 16:03:44 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2021-10-04 16:03:44 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed authentication via AuthKey")
|
2021-06-05 10:13:55 +00:00
|
|
|
resp.MachineAuthorized = false
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-05-05 22:59:26 +00:00
|
|
|
if err != nil {
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2021-08-05 17:11:26 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-14 19:32:03 +00:00
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
2022-02-28 08:06:39 +00:00
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2021-05-05 22:59:26 +00:00
|
|
|
return
|
|
|
|
|
}
|
2022-02-28 08:06:39 +00:00
|
|
|
|
2021-11-14 19:32:03 +00:00
|
|
|
ctx.Data(http.StatusUnauthorized, "application/json; charset=utf-8", respBody)
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2021-08-05 17:11:26 +00:00
|
|
|
Msg("Failed authentication via AuthKey")
|
2022-03-10 13:59:28 +00:00
|
|
|
|
|
|
|
|
if pak != nil {
|
|
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
|
|
|
|
Inc()
|
|
|
|
|
} else {
|
2022-03-21 08:49:14 +00:00
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", "unknown").Inc()
|
2022-03-10 13:59:28 +00:00
|
|
|
}
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2021-06-05 10:13:55 +00:00
|
|
|
return
|
|
|
|
|
}
|
2021-08-05 17:11:26 +00:00
|
|
|
|
2022-02-28 08:06:39 +00:00
|
|
|
log.Debug().
|
|
|
|
|
Str("func", "handleAuthKey").
|
|
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
|
|
|
|
Msg("Authentication key was valid, proceeding to acquire IP addresses")
|
2021-11-22 19:32:11 +00:00
|
|
|
|
2022-02-28 08:06:39 +00:00
|
|
|
nodeKey := NodePublicKeyStripPrefix(registerRequest.NodeKey)
|
2022-02-28 16:34:50 +00:00
|
|
|
|
2022-03-10 13:59:28 +00:00
|
|
|
// 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.GetMachineByMachineKey(machineKey)
|
|
|
|
|
if machine != nil {
|
|
|
|
|
log.Trace().
|
2022-02-28 08:06:39 +00:00
|
|
|
Caller().
|
2022-03-10 13:59:28 +00:00
|
|
|
Str("machine", machine.Name).
|
|
|
|
|
Msg("machine already registered, refreshing with new auth key")
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2022-03-10 13:59:28 +00:00
|
|
|
machine.NodeKey = nodeKey
|
|
|
|
|
machine.AuthKeyID = uint(pak.ID)
|
|
|
|
|
h.RefreshMachine(machine, registerRequest.Expiry)
|
|
|
|
|
} else {
|
|
|
|
|
now := time.Now().UTC()
|
|
|
|
|
machineToRegister := Machine{
|
|
|
|
|
Name: registerRequest.Hostinfo.Hostname,
|
|
|
|
|
NamespaceID: pak.Namespace.ID,
|
|
|
|
|
MachineKey: machineKeyStr,
|
|
|
|
|
RegisterMethod: RegisterMethodAuthKey,
|
|
|
|
|
Expiry: ®isterRequest.Expiry,
|
|
|
|
|
NodeKey: nodeKey,
|
|
|
|
|
LastSeen: &now,
|
|
|
|
|
AuthKeyID: uint(pak.ID),
|
|
|
|
|
}
|
2022-03-10 15:22:21 +00:00
|
|
|
|
2022-03-10 13:59:28 +00:00
|
|
|
machine, err = h.RegisterMachine(
|
|
|
|
|
machineToRegister,
|
|
|
|
|
)
|
|
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
|
|
|
|
Caller().
|
|
|
|
|
Err(err).
|
|
|
|
|
Msg("could not register machine")
|
|
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
|
|
|
|
Inc()
|
|
|
|
|
ctx.String(
|
|
|
|
|
http.StatusInternalServerError,
|
|
|
|
|
"could not register machine",
|
|
|
|
|
)
|
2022-03-10 15:22:21 +00:00
|
|
|
|
2022-03-10 13:59:28 +00:00
|
|
|
return
|
2022-03-10 15:22:21 +00:00
|
|
|
}
|
2020-06-21 10:32:08 +00:00
|
|
|
}
|
2021-05-05 22:59:26 +00:00
|
|
|
|
2022-02-28 08:06:39 +00:00
|
|
|
h.UsePreAuthKey(pak)
|
2021-10-10 09:22:42 +00:00
|
|
|
|
2021-06-05 10:13:55 +00:00
|
|
|
resp.MachineAuthorized = true
|
|
|
|
|
resp.User = *pak.Namespace.toUser()
|
2021-11-24 12:15:55 +00:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2020-06-21 10:32:08 +00:00
|
|
|
if err != nil {
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Error().
|
2021-11-26 23:30:42 +00:00
|
|
|
Caller().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2021-08-05 17:11:26 +00:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2022-02-28 08:06:39 +00:00
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "error", pak.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 19:32:03 +00:00
|
|
|
ctx.String(http.StatusInternalServerError, "Extremely sad!")
|
2021-11-14 15:46:09 +00:00
|
|
|
|
2020-06-21 10:32:08 +00:00
|
|
|
return
|
|
|
|
|
}
|
2022-02-28 08:06:39 +00:00
|
|
|
machineRegistrations.WithLabelValues("new", RegisterMethodAuthKey, "success", pak.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 19:32:03 +00:00
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
2021-08-05 17:11:26 +00:00
|
|
|
log.Info().
|
2021-08-05 19:57:47 +00:00
|
|
|
Str("func", "handleAuthKey").
|
2022-02-28 08:06:39 +00:00
|
|
|
Str("machine", registerRequest.Hostinfo.Hostname).
|
2022-01-16 13:16:59 +00:00
|
|
|
Str("ips", strings.Join(machine.IPAddresses.ToStringSlice(), ", ")).
|
2021-08-05 17:11:26 +00:00
|
|
|
Msg("Successfully authenticated via AuthKey")
|
2020-06-21 10:32:08 +00:00
|
|
|
}
|
