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package guestcontrolplane
import (
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/johnandersen777/socialweb-computer-kcp/internal/contract/guestcp"
"github.com/johnandersen777/socialweb-computer-kcp/internal/guestidentity"
"github.com/johnandersen777/socialweb-computer-kcp/internal/guestnet"
"github.com/johnandersen777/socialweb-computer-kcp/internal/kit/httpjson"
"github.com/johnandersen777/socialweb-computer-kcp/internal/kit/pinneddownloads"
)
const (
HealthPath = "/healthz"
EventsPath = guestnet.EventsPath
MaxGuestBody = 1 << 20
)
func (s *Service) routes() *http.ServeMux {
mux := http.NewServeMux()
mux.HandleFunc("POST /v1/auth/{mount}/{step}", s.handleLogin)
mux.HandleFunc("GET /v1/identity/oidc/token/{role}", s.handleOIDCToken)
mux.HandleFunc("GET /v1/identity/oidc/.well-known/openid-configuration", s.handleDiscovery)
mux.HandleFunc("GET /v1/identity/oidc/.well-known/keys", s.handleKeys)
mux.HandleFunc("POST "+EventsPath, s.handleEvents)
pinneddownloads.NewHandler(s.downloads, s.log).Register(mux, DownloadsRoute)
mux.HandleFunc("GET "+SubscribeEventsPath, s.handleSubscribeEvents)
mux.HandleFunc("GET "+HealthPath, func(w http.ResponseWriter, r *http.Request) {
httpjson.Write(w, http.StatusOK, map[string]any{"ok": true})
})
return mux
}
func (s *Service) guest() guestcp.Plane {
s.mu.Lock()
defer s.mu.Unlock()
if s.plane == nil {
return nil
}
return s.plane
}
func writeReply(w http.ResponseWriter, reply guestcp.Reply) {
status := reply.Status
if status < 100 || status > 599 {
status = http.StatusBadGateway
}
body := reply.Body
if len(body) == 0 {
body = json.RawMessage(`{}`)
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status)
_, _ = w.Write(body)
}
func writeGuestError(w http.ResponseWriter, status int, message string) {
httpjson.Write(w, status, map[string]any{"errors": []string{message}})
}
func readJSONMap(r *http.Request) (map[string]any, error) {
dec := json.NewDecoder(io.LimitReader(r.Body, MaxGuestBody+1))
value := map[string]any{}
if err := dec.Decode(&value); err != nil {
return nil, fmt.Errorf("the body is not a JSON object: %w", err)
}
return value, nil
}
func (s *Service) handleLogin(w http.ResponseWriter, r *http.Request) {
guest := s.guest()
if guest == nil {
writeGuestError(w, http.StatusServiceUnavailable, "the guest control plane is not ready")
return
}
mount := r.PathValue("mount")
if mount != s.spec.GuestLoginMount {
writeGuestError(w, http.StatusNotFound, "no such mount")
return
}
step := r.PathValue("step")
if _, err := guestidentity.ParseLoginStep(step); err != nil {
writeGuestError(w, http.StatusNotFound, "no such step")
return
}
input, err := readJSONMap(r)
if err != nil {
writeGuestError(w, http.StatusBadRequest, err.Error())
return
}
writeReply(w, guest.LoginStep(r.Context(), step, input))
}
func (s *Service) handleOIDCToken(w http.ResponseWriter, r *http.Request) {
guest := s.guest()
if guest == nil {
writeGuestError(w, http.StatusServiceUnavailable, "the guest control plane is not ready")
return
}
role := r.PathValue("role")
if !guestidentity.ValidRole(role) {
writeGuestError(w, http.StatusNotFound, "no such role")
return
}
writeReply(w, guest.OIDCToken(r.Context(), role, r.Header.Get(guestidentity.VaultTokenHeader)))
}
func (s *Service) handleDiscovery(w http.ResponseWriter, r *http.Request) {
guest := s.guest()
if guest == nil {
writeGuestError(w, http.StatusServiceUnavailable, "the guest control plane is not ready")
return
}
writeReply(w, guest.Discovery(r.Context()))
}
func (s *Service) handleKeys(w http.ResponseWriter, r *http.Request) {
guest := s.guest()
if guest == nil {
writeGuestError(w, http.StatusServiceUnavailable, "the guest control plane is not ready")
return
}
writeReply(w, guest.Keys(r.Context()))
}
func (s *Service) handleEvents(w http.ResponseWriter, r *http.Request) {
guest := s.guest()
if guest == nil {
writeGuestError(w, http.StatusServiceUnavailable, "the guest control plane is not ready")
return
}
var body struct {
AcceptURI string `json:"acceptUri"`
AcceptCID string `json:"acceptCid"`
Record map[string]any `json:"record"`
}
dec := json.NewDecoder(io.LimitReader(r.Body, MaxGuestBody+1))
if err := dec.Decode(&body); err != nil {
httpjson.Write(w, http.StatusBadRequest, map[string]any{"error": "InvalidRequest"})
return
}
writeReply(w, guest.Events(r.Context(), r.Header.Get("Authorization"), guestcp.EventsRequest{
AcceptURI: body.AcceptURI,
AcceptCID: body.AcceptCID,
Record: body.Record,
}))
}
