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This is step one in detaching the Database layer from Headscale (h). The ultimate goal is to have all function that does database operations in its own package, and keep the business logic and writing separate. Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
//go:build ts2019
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package hscontrol
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import (
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"errors"
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"io"
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"net/http"
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"github.com/gorilla/mux"
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"github.com/juanfont/headscale/hscontrol/util"
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"github.com/rs/zerolog/log"
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"gorm.io/gorm"
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"tailscale.com/tailcfg"
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"tailscale.com/types/key"
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)
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// PollNetMapHandler takes care of /machine/:id/map
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//
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// This is the busiest endpoint, as it keeps the HTTP long poll that updates
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// the clients when something in the network changes.
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//
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// The clients POST stuff like HostInfo and their Endpoints here, but
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// only after their first request (marked with the ReadOnly field).
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//
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// At this moment the updates are sent in a quite horrendous way, but they kinda work.
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func (h *Headscale) PollNetMapHandler(
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writer http.ResponseWriter,
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req *http.Request,
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) {
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vars := mux.Vars(req)
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machineKeyStr, ok := vars["mkey"]
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if !ok || machineKeyStr == "" {
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log.Error().
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Str("handler", "PollNetMap").
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Msg("No machine key in request")
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http.Error(writer, "No machine key in request", http.StatusBadRequest)
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return
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}
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log.Trace().
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Str("handler", "PollNetMap").
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Str("id", machineKeyStr).
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Msg("PollNetMapHandler called")
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body, _ := io.ReadAll(req.Body)
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var machineKey key.MachinePublic
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err := machineKey.UnmarshalText([]byte(util.MachinePublicKeyEnsurePrefix(machineKeyStr)))
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if err != nil {
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log.Error().
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Str("handler", "PollNetMap").
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Err(err).
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Msg("Cannot parse client key")
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http.Error(writer, "Cannot parse client key", http.StatusBadRequest)
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return
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}
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mapRequest := tailcfg.MapRequest{}
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err = util.DecodeAndUnmarshalNaCl(body, &mapRequest, &machineKey, h.privateKey)
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if err != nil {
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log.Error().
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Str("handler", "PollNetMap").
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Err(err).
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Msg("Cannot decode message")
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http.Error(writer, "Cannot decode message", http.StatusBadRequest)
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return
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}
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machine, err := h.db.GetMachineByMachineKey(machineKey)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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log.Warn().
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Str("handler", "PollNetMap").
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Msgf("Ignoring request, cannot find machine with key %s", machineKey.String())
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http.Error(writer, "", http.StatusUnauthorized)
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return
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}
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log.Error().
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Str("handler", "PollNetMap").
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Msgf("Failed to fetch machine from the database with Machine key: %s", machineKey.String())
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http.Error(writer, "", http.StatusInternalServerError)
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return
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}
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log.Trace().
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Str("handler", "PollNetMap").
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Str("id", machineKeyStr).
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Str("machine", machine.Hostname).
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Msg("A machine is entering polling via the legacy protocol")
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h.handlePollCommon(writer, req.Context(), machine, mapRequest, false)
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}
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