2020-06-21 12:32:08 +02:00
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package headscale
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import (
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"encoding/binary"
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"encoding/json"
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2021-06-24 15:44:19 +02:00
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"errors"
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2020-06-21 12:32:08 +02:00
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"fmt"
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"io"
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"net/http"
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2021-10-08 17:43:52 +08:00
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"strings"
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2020-06-21 12:32:08 +02:00
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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 15:44:19 +02:00
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"gorm.io/gorm"
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2020-06-21 12:32:08 +02:00
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"tailscale.com/tailcfg"
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2021-06-25 18:57:08 +02:00
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"tailscale.com/types/wgkey"
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2020-06-21 12:32:08 +02:00
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)
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2021-11-15 17:24:24 +00:00
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const reservedResponseHeaderSize = 4
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2021-11-14 18:31:51 +01:00
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2021-02-28 00:58:09 +01:00
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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 20:32:03 +01:00
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func (h *Headscale) KeyHandler(ctx *gin.Context) {
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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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[]byte(h.publicKey.HexString()),
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)
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2020-06-21 12:32:08 +02:00
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}
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2021-02-28 00:58:09 +01:00
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// RegisterWebAPI shows a simple message in the browser to point to the CLI
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2021-11-13 08:39:04 +00:00
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// Listens in /register.
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2021-11-14 20:32:03 +01:00
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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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2021-11-14 16:46:09 +01:00
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2021-02-28 00:58:09 +01:00
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return
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}
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2021-11-14 20:32:03 +01:00
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ctx.Data(http.StatusOK, "text/html; charset=utf-8", []byte(fmt.Sprintf(`
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2021-02-28 00:58:09 +01:00
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<html>
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<body>
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<h1>headscale</h1>
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<p>
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2021-05-15 00:05:41 +02:00
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Run the command below in the headscale server to add this machine to your network:
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2021-02-28 00:58:09 +01:00
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</p>
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<p>
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<code>
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2021-11-04 22:18:06 +00:00
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<b>headscale -n NAMESPACE nodes register --key %s</b>
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2021-02-28 00:58:09 +01:00
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</code>
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</p>
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</body>
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</html>
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2021-05-24 21:59:03 +02:00
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2021-11-14 20:32:03 +01:00
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`, machineKeyStr)))
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2021-02-28 00:58:09 +01:00
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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 20:32:03 +01:00
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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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machineKey, err := wgkey.ParseHex(machineKeyStr)
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2020-06-21 12:32:08 +02:00
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if err != nil {
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2021-08-05 18:11:26 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-08-05 18:11:26 +01:00
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Err(err).
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Msg("Cannot parse machine key")
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2021-10-10 17:22:42 +08:00
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machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
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2021-11-14 20:32:03 +01:00
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ctx.String(http.StatusInternalServerError, "Sad!")
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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req := tailcfg.RegisterRequest{}
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2021-11-14 20:32:03 +01:00
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err = decode(body, &req, &machineKey, h.privateKey)
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2020-06-21 12:32:08 +02:00
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if err != nil {
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2021-08-05 18:11:26 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-08-05 18:11:26 +01:00
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Err(err).
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Msg("Cannot decode message")
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2021-10-10 17:22:42 +08:00
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machineRegistrations.WithLabelValues("unknown", "web", "error", "unknown").Inc()
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2021-11-14 20:32:03 +01:00
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ctx.String(http.StatusInternalServerError, "Very sad!")
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-05-06 00:59:26 +02:00
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2021-08-18 23:24:22 +01:00
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now := time.Now().UTC()
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2021-11-14 20:32:03 +01:00
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machine, err := h.GetMachineByMachineKey(machineKey.HexString())
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2021-10-10 17:22:42 +08:00
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if errors.Is(err, gorm.ErrRecordNotFound) {
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2021-08-05 20:57:47 +01:00
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log.Info().Str("machine", req.Hostinfo.Hostname).Msg("New machine")
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2021-10-10 17:22:42 +08:00
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newMachine := Machine{
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Expiry: &time.Time{},
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2021-11-14 20:32:03 +01:00
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MachineKey: machineKey.HexString(),
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2021-10-10 17:22:42 +08:00
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Name: req.Hostinfo.Hostname,
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2021-06-05 12:13:55 +02:00
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}
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2021-10-10 17:22:42 +08:00
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if err := h.db.Create(&newMachine).Error; err != nil {
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2021-08-05 18:16:21 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-08-05 18:16:21 +01:00
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Err(err).
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Msg("Could not create row")
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2021-11-14 20:32:03 +01:00
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machineRegistrations.WithLabelValues("unknown", "web", "error", machine.Namespace.Name).
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2021-11-13 08:36:45 +00:00
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Inc()
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2021-11-14 16:46:09 +01:00
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2021-06-05 12:13:55 +02:00
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return
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}
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2021-11-14 20:32:03 +01:00
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machine = &newMachine
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2021-06-05 12:13:55 +02:00
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}
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2021-11-14 20:32:03 +01:00
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if !machine.Registered && req.Auth.AuthKey != "" {
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h.handleAuthKey(ctx, h.db, machineKey, req, *machine)
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-06-05 12:13:55 +02:00
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resp := tailcfg.RegisterResponse{}
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// We have the updated key!
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2021-11-14 20:32:03 +01:00
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if machine.NodeKey == wgkey.Key(req.NodeKey).HexString() {
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2021-10-29 21:35:07 +08:00
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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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2021-10-08 17:43:52 +08:00
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if !req.Expiry.IsZero() && req.Expiry.UTC().Before(now) {
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2021-10-10 17:22:42 +08:00
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log.Info().
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2021-10-08 17:43:52 +08:00
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Str("handler", "Registration").
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2021-11-14 20:32:03 +01:00
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Str("machine", machine.Name).
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2021-10-08 17:43:52 +08:00
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Msg("Client requested logout")
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2021-11-14 20:32:03 +01:00
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machine.Expiry = &req.Expiry // save the expiry so that the machine is marked as expired
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h.db.Save(&machine)
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2021-10-08 17:43:52 +08:00
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resp.AuthURL = ""
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resp.MachineAuthorized = false
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2021-11-14 20:32:03 +01:00
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resp.User = *machine.Namespace.toUser()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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2021-10-08 17:43:52 +08:00
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if err != nil {
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log.Error().
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Str("handler", "Registration").
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Err(err).
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Msg("Cannot encode message")
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2021-11-14 20:32:03 +01:00
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ctx.String(http.StatusInternalServerError, "")
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2021-11-14 16:46:09 +01:00
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2021-10-08 17:43:52 +08:00
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return
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}
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2021-11-14 20:32:03 +01:00
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ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
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2021-11-14 16:46:09 +01:00
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2021-10-08 17:43:52 +08:00
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return
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}
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2021-11-14 20:32:03 +01:00
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if machine.Registered && machine.Expiry.UTC().After(now) {
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2021-10-10 17:22:42 +08:00
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// The machine registration is valid, respond with redirect to /map
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2021-08-05 18:11:26 +01:00
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log.Debug().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-11-14 20:32:03 +01:00
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Str("machine", machine.Name).
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2021-08-06 00:21:34 +02:00
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Msg("Client is registered and we have the current NodeKey. All clear to /map")
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2021-08-05 18:11:26 +01:00
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2020-06-21 12:32:08 +02:00
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resp.AuthURL = ""
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2021-05-06 23:25:40 +02:00
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resp.MachineAuthorized = true
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2021-11-14 20:32:03 +01:00
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resp.User = *machine.Namespace.toUser()
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resp.Login = *machine.Namespace.toLogin()
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2021-10-15 23:09:55 +08:00
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2021-11-14 20:32:03 +01:00
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respBody, err := encode(resp, &machineKey, h.privateKey)
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2020-06-21 12:32:08 +02:00
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if err != nil {
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2021-08-05 18:11:26 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-08-05 18:11:26 +01:00
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Err(err).
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Msg("Cannot encode message")
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2021-11-14 20:32:03 +01:00
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machineRegistrations.WithLabelValues("update", "web", "error", machine.Namespace.Name).
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2021-11-13 08:36:45 +00:00
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Inc()
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2021-11-14 20:32:03 +01:00
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ctx.String(http.StatusInternalServerError, "")
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-11-14 20:32:03 +01:00
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machineRegistrations.WithLabelValues("update", "web", "success", machine.Namespace.Name).
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2021-11-13 08:36:45 +00:00
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Inc()
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2021-11-14 20:32:03 +01:00
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ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-10-10 17:22:42 +08:00
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// The client has registered before, but has expired
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2021-08-05 18:11:26 +01:00
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log.Debug().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-11-14 20:32:03 +01:00
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Str("machine", machine.Name).
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2021-10-10 17:22:42 +08:00
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Msg("Machine registration has expired. Sending a authurl to register")
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2021-09-26 16:53:05 +08:00
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2021-10-18 19:27:52 +00:00
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if h.cfg.OIDC.Issuer != "" {
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2021-10-08 17:43:52 +08:00
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resp.AuthURL = fmt.Sprintf("%s/oidc/register/%s",
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2021-11-14 20:32:03 +01:00
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strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.HexString())
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2021-09-26 16:53:05 +08:00
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} else {
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resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
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2021-11-14 20:32:03 +01:00
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strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.HexString())
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2021-09-26 16:53:05 +08:00
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}
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2021-10-08 17:43:52 +08:00
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2021-10-29 21:35:07 +08:00
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// When a client connects, it may request a specific expiry time in its
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// RegisterRequest (https://github.com/tailscale/tailscale/blob/main/tailcfg/tailcfg.go#L634)
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2021-10-30 15:33:01 +00:00
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// RequestedExpiry is used to store the clients requested expiry time since the authentication flow is broken
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2021-10-29 21:35:07 +08:00
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// into two steps (which cant pass arbitrary data between them easily) and needs to be
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// retrieved again after the user has authenticated. After the authentication flow
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// completes, RequestedExpiry is copied into Expiry.
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2021-11-14 20:32:03 +01:00
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machine.RequestedExpiry = &req.Expiry
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2021-10-29 21:35:07 +08:00
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2021-11-14 20:32:03 +01:00
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h.db.Save(&machine)
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2021-10-08 17:43:52 +08:00
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2021-11-14 20:32:03 +01:00
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respBody, err := encode(resp, &machineKey, h.privateKey)
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2020-06-21 12:32:08 +02:00
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if err != nil {
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2021-08-05 18:11:26 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-08-05 18:11:26 +01:00
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Err(err).
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Msg("Cannot encode message")
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2021-11-14 20:32:03 +01:00
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machineRegistrations.WithLabelValues("new", "web", "error", machine.Namespace.Name).
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2021-11-13 08:36:45 +00:00
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Inc()
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2021-11-14 20:32:03 +01:00
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ctx.String(http.StatusInternalServerError, "")
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-11-14 20:32:03 +01:00
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machineRegistrations.WithLabelValues("new", "web", "success", machine.Namespace.Name).
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2021-11-13 08:36:45 +00:00
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Inc()
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2021-11-14 20:32:03 +01:00
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ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
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2021-11-14 16:46:09 +01:00
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2020-06-21 12:32:08 +02:00
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return
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}
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2021-10-08 17:43:52 +08:00
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// The NodeKey we have matches OldNodeKey, which means this is a refresh after a key expiration
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2021-11-14 20:32:03 +01:00
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if machine.NodeKey == wgkey.Key(req.OldNodeKey).HexString() &&
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machine.Expiry.UTC().After(now) {
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2021-08-05 18:11:26 +01:00
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log.Debug().
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2021-08-05 20:57:47 +01:00
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Str("handler", "Registration").
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2021-11-14 20:32:03 +01:00
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Str("machine", machine.Name).
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2021-08-05 18:11:26 +01:00
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Msg("We have the OldNodeKey in the database. This is a key refresh")
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2021-11-14 20:32:03 +01:00
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machine.NodeKey = wgkey.Key(req.NodeKey).HexString()
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h.db.Save(&machine)
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2021-06-05 12:13:55 +02:00
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2020-06-21 12:32:08 +02:00
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resp.AuthURL = ""
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2021-11-14 20:32:03 +01:00
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resp.User = *machine.Namespace.toUser()
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respBody, err := encode(resp, &machineKey, h.privateKey)
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2020-06-21 12:32:08 +02:00
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if err != nil {
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2021-08-05 18:11:26 +01:00
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log.Error().
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2021-08-05 20:57:47 +01:00
|
|
|
Str("handler", "Registration").
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.String(http.StatusInternalServerError, "Extremely sad!")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
return
|
|
|
|
|
}
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
|
2021-10-10 17:22:42 +08:00
|
|
|
// The machine registration is new, redirect the client to the registration URL
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Debug().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("handler", "Registration").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Msg("The node is sending us a new NodeKey, sending auth url")
|
2021-10-18 19:27:52 +00:00
|
|
|
if h.cfg.OIDC.Issuer != "" {
|
2021-11-13 08:36:45 +00:00
|
|
|
resp.AuthURL = fmt.Sprintf(
|
|
|
|
|
"%s/oidc/register/%s",
|
|
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"),
|
2021-11-14 20:32:03 +01:00
|
|
|
machineKey.HexString(),
|
2021-11-13 08:36:45 +00:00
|
|
|
)
|
2021-09-26 16:53:05 +08:00
|
|
|
} else {
|
|
|
|
|
resp.AuthURL = fmt.Sprintf("%s/register?key=%s",
|
2021-11-14 20:32:03 +01:00
|
|
|
strings.TrimSuffix(h.cfg.ServerURL, "/"), machineKey.HexString())
|
2021-09-26 16:53:05 +08:00
|
|
|
}
|
2021-10-08 17:43:52 +08:00
|
|
|
|
2021-10-30 15:33:01 +00:00
|
|
|
// save the requested expiry time for retrieval later in the authentication flow
|
2021-11-14 20:32:03 +01:00
|
|
|
machine.RequestedExpiry = &req.Expiry
|
|
|
|
|
machine.NodeKey = wgkey.Key(req.NodeKey).HexString() // save the NodeKey
|
|
|
|
|
h.db.Save(&machine)
|
2021-10-08 17:43:52 +08:00
|
|
|
|
2021-11-14 20:32:03 +01:00
|
|
|
respBody, err := encode(resp, &machineKey, h.privateKey)
|
2021-06-05 12:13:55 +02:00
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("handler", "Registration").
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-06-05 12:13:55 +02:00
|
|
|
return
|
|
|
|
|
}
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
2020-06-21 12:32:08 +02:00
|
|
|
}
|
|
|
|
|
|
2021-11-13 08:36:45 +00:00
|
|
|
func (h *Headscale) getMapResponse(
|
2021-11-14 20:32:03 +01:00
|
|
|
machineKey wgkey.Key,
|
2021-11-13 08:36:45 +00:00
|
|
|
req tailcfg.MapRequest,
|
2021-11-14 20:32:03 +01:00
|
|
|
machine *Machine,
|
2021-11-13 08:36:45 +00:00
|
|
|
) ([]byte, error) {
|
2021-08-05 21:47:06 +01:00
|
|
|
log.Trace().
|
|
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Str("machine", req.Hostinfo.Hostname).
|
|
|
|
|
Msg("Creating Map response")
|
2021-11-14 20:32:03 +01:00
|
|
|
node, err := machine.toNode(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
|
2020-06-21 12:32:08 +02:00
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "getMapResponse").
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot convert to node")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
return nil, err
|
|
|
|
|
}
|
2021-10-02 21:58:28 +01:00
|
|
|
|
2021-11-14 20:32:03 +01:00
|
|
|
peers, err := h.getPeers(machine)
|
2020-06-21 12:32:08 +02:00
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "getMapResponse").
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot fetch peers")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
return nil, err
|
|
|
|
|
}
|
2021-07-11 16:39:19 +02:00
|
|
|
|
2021-11-14 20:32:03 +01:00
|
|
|
profiles := getMapResponseUserProfiles(*machine, peers)
|
2021-07-11 16:39:19 +02:00
|
|
|
|
2021-10-04 23:49:16 +02:00
|
|
|
nodePeers, err := peers.toNodes(h.cfg.BaseDomain, h.cfg.DNSConfig, true)
|
2021-10-02 22:03:34 +01:00
|
|
|
if err != nil {
|
|
|
|
|
log.Error().
|
|
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed to convert peers to Tailscale nodes")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-10-02 22:03:34 +01:00
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
|
2021-11-14 18:03:21 +01:00
|
|
|
dnsConfig := getMapResponseDNSConfig(
|
2021-11-13 08:36:45 +00:00
|
|
|
h.cfg.DNSConfig,
|
|
|
|
|
h.cfg.BaseDomain,
|
2021-11-14 20:32:03 +01:00
|
|
|
*machine,
|
2021-11-13 08:36:45 +00:00
|
|
|
peers,
|
|
|
|
|
)
|
2021-10-02 12:13:19 +02:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
resp := tailcfg.MapResponse{
|
2021-10-02 11:20:42 +02:00
|
|
|
KeepAlive: false,
|
|
|
|
|
Node: node,
|
2021-10-04 23:43:42 +02:00
|
|
|
Peers: nodePeers,
|
2021-10-02 12:13:19 +02:00
|
|
|
DNSConfig: dnsConfig,
|
2021-10-02 11:20:42 +02:00
|
|
|
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 12:07:01 +02:00
|
|
|
UserProfiles: profiles,
|
2021-02-24 00:31:58 +01:00
|
|
|
}
|
2021-10-17 12:07:01 +02:00
|
|
|
|
2021-08-13 10:33:19 +01:00
|
|
|
log.Trace().
|
|
|
|
|
Str("func", "getMapResponse").
|
|
|
|
|
Str("machine", req.Hostinfo.Hostname).
|
2021-10-05 16:51:42 +00:00
|
|
|
// Interface("payload", resp).
|
2021-08-13 10:33:19 +01:00
|
|
|
Msgf("Generated map response: %s", tailMapResponseToString(resp))
|
2020-06-21 12:32:08 +02:00
|
|
|
|
|
|
|
|
var respBody []byte
|
|
|
|
|
if req.Compress == "zstd" {
|
|
|
|
|
src, _ := json.Marshal(resp)
|
2021-08-13 10:33:19 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
encoder, _ := zstd.NewWriter(nil)
|
|
|
|
|
srcCompressed := encoder.EncodeAll(src, nil)
|
2021-11-14 20:32:03 +01:00
|
|
|
respBody, err = encodeMsg(srcCompressed, &machineKey, h.privateKey)
|
2020-06-21 12:32:08 +02:00
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
} else {
|
2021-11-14 20:32:03 +01:00
|
|
|
respBody, err = encode(resp, &machineKey, h.privateKey)
|
2020-06-21 12:32:08 +02:00
|
|
|
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 12:32:08 +02:00
|
|
|
binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
|
|
|
|
|
data = append(data, respBody...)
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-10-04 17:39:01 +00:00
|
|
|
return data, nil
|
2020-06-21 12:32:08 +02:00
|
|
|
}
|
|
|
|
|
|
2021-11-13 08:36:45 +00:00
|
|
|
func (h *Headscale) getMapKeepAliveResponse(
|
2021-11-14 20:32:03 +01:00
|
|
|
machineKey wgkey.Key,
|
|
|
|
|
mapRequest tailcfg.MapRequest,
|
2021-11-13 08:36:45 +00:00
|
|
|
) ([]byte, error) {
|
2021-11-14 20:32:03 +01:00
|
|
|
mapResponse := tailcfg.MapResponse{
|
2020-06-21 12:32:08 +02:00
|
|
|
KeepAlive: true,
|
|
|
|
|
}
|
|
|
|
|
var respBody []byte
|
|
|
|
|
var err error
|
2021-11-14 20:32:03 +01:00
|
|
|
if mapRequest.Compress == "zstd" {
|
|
|
|
|
src, _ := json.Marshal(mapResponse)
|
2020-06-21 12:32:08 +02:00
|
|
|
encoder, _ := zstd.NewWriter(nil)
|
|
|
|
|
srcCompressed := encoder.EncodeAll(src, nil)
|
2021-11-14 20:32:03 +01:00
|
|
|
respBody, err = encodeMsg(srcCompressed, &machineKey, h.privateKey)
|
2020-06-21 12:32:08 +02:00
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
} else {
|
2021-11-14 20:32:03 +01:00
|
|
|
respBody, err = encode(mapResponse, &machineKey, h.privateKey)
|
2020-06-21 12:32:08 +02:00
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
}
|
2021-11-15 17:24:24 +00:00
|
|
|
data := make([]byte, reservedResponseHeaderSize)
|
2020-06-21 12:32:08 +02:00
|
|
|
binary.LittleEndian.PutUint32(data, uint32(len(respBody)))
|
|
|
|
|
data = append(data, respBody...)
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-10-04 17:39:01 +00:00
|
|
|
return data, nil
|
2020-06-21 12:32:08 +02:00
|
|
|
}
|
|
|
|
|
|
2021-10-22 16:56:00 +00:00
|
|
|
func (h *Headscale) handleAuthKey(
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx *gin.Context,
|
2021-10-22 16:56:00 +00:00
|
|
|
db *gorm.DB,
|
|
|
|
|
idKey wgkey.Key,
|
2021-11-14 20:32:03 +01:00
|
|
|
reqisterRequest tailcfg.RegisterRequest,
|
|
|
|
|
machine Machine,
|
2021-10-22 16:56:00 +00:00
|
|
|
) {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Debug().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", reqisterRequest.Hostinfo.Hostname).
|
|
|
|
|
Msgf("Processing auth key for %s", reqisterRequest.Hostinfo.Hostname)
|
2021-05-06 00:59:26 +02:00
|
|
|
resp := tailcfg.RegisterResponse{}
|
2021-11-14 20:32:03 +01:00
|
|
|
pak, err := h.checkKeyValidity(reqisterRequest.Auth.AuthKey)
|
2021-06-05 12:13:55 +02:00
|
|
|
if err != nil {
|
2021-10-04 18:03:44 +02:00
|
|
|
log.Error().
|
|
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-10-04 18:03:44 +02:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Failed authentication via AuthKey")
|
2021-06-05 12:13:55 +02:00
|
|
|
resp.MachineAuthorized = false
|
2021-05-06 00:59:26 +02:00
|
|
|
respBody, err := encode(resp, &idKey, h.privateKey)
|
|
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.String(http.StatusInternalServerError, "")
|
|
|
|
|
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-05-06 00:59:26 +02:00
|
|
|
return
|
|
|
|
|
}
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.Data(http.StatusUnauthorized, "application/json; charset=utf-8", respBody)
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Msg("Failed authentication via AuthKey")
|
2021-11-14 20:32:03 +01:00
|
|
|
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-06-05 12:13:55 +02:00
|
|
|
return
|
|
|
|
|
}
|
2021-08-05 18:11:26 +01:00
|
|
|
|
|
|
|
|
log.Debug().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Msg("Authentication key was valid, proceeding to acquire an IP address")
|
2021-06-05 12:13:55 +02:00
|
|
|
ip, err := h.getAvailableIP()
|
|
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Msg("Failed to find an available IP")
|
2021-11-14 20:32:03 +01:00
|
|
|
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2021-05-06 00:59:26 +02:00
|
|
|
return
|
2020-06-21 12:32:08 +02:00
|
|
|
}
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Info().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("ip", ip.String()).
|
2021-11-14 20:32:03 +01:00
|
|
|
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 = "authKey"
|
|
|
|
|
db.Save(&machine)
|
2021-05-06 00:59:26 +02:00
|
|
|
|
2021-10-13 22:51:55 +02:00
|
|
|
pak.Used = true
|
2021-10-13 18:13:26 +02:00
|
|
|
db.Save(&pak)
|
2021-10-10 17:22:42 +08:00
|
|
|
|
2021-06-05 12:13:55 +02:00
|
|
|
resp.MachineAuthorized = true
|
|
|
|
|
resp.User = *pak.Namespace.toUser()
|
2020-06-21 12:32:08 +02:00
|
|
|
respBody, err := encode(resp, &idKey, h.privateKey)
|
|
|
|
|
if err != nil {
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Error().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 18:11:26 +01:00
|
|
|
Err(err).
|
|
|
|
|
Msg("Cannot encode message")
|
2021-11-14 20:32:03 +01:00
|
|
|
machineRegistrations.WithLabelValues("new", "authkey", "error", machine.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.String(http.StatusInternalServerError, "Extremely sad!")
|
2021-11-14 16:46:09 +01:00
|
|
|
|
2020-06-21 12:32:08 +02:00
|
|
|
return
|
|
|
|
|
}
|
2021-11-14 20:32:03 +01:00
|
|
|
machineRegistrations.WithLabelValues("new", "authkey", "success", machine.Namespace.Name).
|
2021-11-13 08:36:45 +00:00
|
|
|
Inc()
|
2021-11-14 20:32:03 +01:00
|
|
|
ctx.Data(http.StatusOK, "application/json; charset=utf-8", respBody)
|
2021-08-05 18:11:26 +01:00
|
|
|
log.Info().
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("func", "handleAuthKey").
|
2021-11-14 20:32:03 +01:00
|
|
|
Str("machine", machine.Name).
|
2021-08-05 20:57:47 +01:00
|
|
|
Str("ip", ip.String()).
|
2021-08-05 18:11:26 +01:00
|
|
|
Msg("Successfully authenticated via AuthKey")
|
2020-06-21 12:32:08 +02:00
|
|
|
}
|
