Function getUpdateResource

service/core/api.go:197–302

(w http.ResponseWriter, r *http.Request)

}

func getUpdateResource(w http.ResponseWriter, r *http.Request) {
	// Get identifier from URL.
	var identifier string
	if ar := api.GetAPIRequest(r); ar != nil {
		identifier = ar.URLVars["artifact_name"]
	}
	if identifier == "" {
		http.Error(w, "no resource specified", http.StatusBadRequest)
		return
	}

	// Get resource.
	artifact, err := module.instance.BinaryUpdates().GetFile(identifier)
	if err != nil {
		intelArtifact, intelErr := module.instance.IntelUpdates().GetFile(identifier)
		if intelErr == nil {
			artifact = intelArtifact
		} else {
			http.Error(w, err.Error(), http.StatusNotFound)
			return
		}
	}

	// Open file for reading.
	file, err := os.Open(artifact.Path())
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	defer file.Close() //nolint:errcheck,gosec

	// Assign file to reader
	var reader io.Reader = file

	// Add version and hash to header.
	if artifact.Version != "" {
		w.Header().Set("Resource-Version", artifact.Version)
	}
	if artifact.SHA256 != "" {
		w.Header().Set("Resource-SHA256", artifact.SHA256)
	}

	// Set Content-Type.
	contentType, _ := utils.MimeTypeByExtension(filepath.Ext(artifact.Path()))
	w.Header().Set("Content-Type", contentType)

	// Check if the content type may be returned.
	accept := r.Header.Get("Accept")
	if accept != "" {
		mimeTypes := strings.Split(accept, ",")
		// First, clean mime types.
		for i, mimeType := range mimeTypes {
			mimeType = strings.TrimSpace(mimeType)
			mimeType, _, _ = strings.Cut(mimeType, ";")
			mimeTypes[i] = mimeType
		}
		// Second, check if we may return anything.
		var acceptsAny bool