package websvc import ( "context" "encoding/json" "fmt" "net/http" "net/netip" "time" "github.com/AdguardTeam/AdGuardHome/internal/next/agh" "github.com/AdguardTeam/golibs/log" ) // HTTP Settings Handlers // ReqPatchSettingsHTTP describes the request to the PATCH /api/v1/settings/http // HTTP API. type ReqPatchSettingsHTTP struct { // TODO(a.garipov): Add more as we go. // // TODO(a.garipov): Add wait time. Addresses []netip.AddrPort `json:"addresses"` SecureAddresses []netip.AddrPort `json:"secure_addresses"` Timeout JSONDuration `json:"timeout"` } // HTTPAPIHTTPSettings are the HTTP settings as used by the HTTP API. See the // HttpSettings object in the OpenAPI specification. type HTTPAPIHTTPSettings struct { // TODO(a.garipov): Add more as we go. Addresses []netip.AddrPort `json:"addresses"` SecureAddresses []netip.AddrPort `json:"secure_addresses"` Timeout JSONDuration `json:"timeout"` ForceHTTPS bool `json:"force_https"` } // handlePatchSettingsHTTP is the handler for the PATCH /api/v1/settings/http // HTTP API. func (svc *Service) handlePatchSettingsHTTP(w http.ResponseWriter, r *http.Request) { req := &ReqPatchSettingsHTTP{} // TODO(a.garipov): Validate nulls and proper JSON patch. err := json.NewDecoder(r.Body).Decode(&req) if err != nil { writeJSONErrorResponse(w, r, fmt.Errorf("decoding: %w", err)) return } newConf := &Config{ Pprof: &PprofConfig{ Port: svc.pprofPort, Enabled: svc.pprof != nil, }, ConfigManager: svc.confMgr, Frontend: svc.frontend, TLS: svc.tls, Addresses: req.Addresses, SecureAddresses: req.SecureAddresses, Timeout: time.Duration(req.Timeout), ForceHTTPS: svc.forceHTTPS, } writeJSONOKResponse(w, r, &HTTPAPIHTTPSettings{ Addresses: newConf.Addresses, SecureAddresses: newConf.SecureAddresses, Timeout: JSONDuration(newConf.Timeout), ForceHTTPS: newConf.ForceHTTPS, }) cancelUpd := func() {} updCtx := context.Background() ctx := r.Context() if deadline, ok := ctx.Deadline(); ok { updCtx, cancelUpd = context.WithDeadline(updCtx, deadline) } // Launch the new HTTP service in a separate goroutine to let this handler // finish and thus, this server to shutdown. go svc.relaunch(updCtx, cancelUpd, newConf) } // relaunch updates the web service in the configuration manager and starts it. // It is intended to be used as a goroutine. func (svc *Service) relaunch(ctx context.Context, cancel context.CancelFunc, newConf *Config) { defer log.OnPanic("websvc: relaunching") defer cancel() err := svc.confMgr.UpdateWeb(ctx, newConf) if err != nil { log.Error("websvc: updating web: %s", err) return } // TODO(a.garipov): Consider better ways to do this. const maxUpdDur = 5 * time.Second updStart := time.Now() var newSvc agh.ServiceWithConfig[*Config] for newSvc = svc.confMgr.Web(); newSvc == svc; { if time.Since(updStart) >= maxUpdDur { log.Error("websvc: failed to update svc after %s", maxUpdDur) return } log.Debug("websvc: waiting for new websvc to be configured") time.Sleep(100 * time.Millisecond) } err = newSvc.Start() if err != nil { log.Error("websvc: new svc failed to start with error: %s", err) } }