Function ObjectFromRequest

internal/server/auth/authorization_objects.go:171–232

ObjectFromRequest returns an object created from the request by evaluating the given mux vars. Mux vars must be provided in the order that they are found in the endpoint path. If the object requires a project name, this is taken from the project query parameter unless the URL begins with /1.0/projec

(r *http.Request, objectType ObjectType, expandProject func(string) string, expandFingerprint func(string, string) string, expandVolumeLocation func(string, string, string, string) string, muxVars ...string)

// requires a project name, this is taken from the project query parameter unless the URL begins
// with /1.0/projects.
func ObjectFromRequest(r *http.Request, objectType ObjectType, expandProject func(string) string, expandFingerprint func(string, string) string, expandVolumeLocation func(string, string, string, string) string, muxVars ...string) (Object, error) {
	// Shortcut for server objects which don't require any arguments.
	if objectType == ObjectTypeServer {
		return ObjectServer(), nil
	}

	values, err := url.ParseQuery(r.URL.RawQuery)
	if err != nil {
		return "", err
	}

	projectName := values.Get("project")
	if projectName == "" {
		projectName = "default"
	} else if projectName != "default" {
		projectName = expandProject(projectName)
	}

	location := values.Get("target")

	muxValues := make([]string, 0, len(muxVars))
	for _, muxVar := range muxVars {
		var muxValue string

		if muxVar == "location" {
			// Special handling for the location which is not present as a real path variable.
			if location != "" {
				muxValue = location
			} else if objectType == ObjectTypeStorageVolume {
				muxValue = expandVolumeLocation(projectName, r.PathValue("poolName"), r.PathValue("type"), r.PathValue("volumeName"))
			}

			if muxValue == "" {
				continue
			}
		} else {
			// The HTTP router already URL-decodes path segments.
			muxValue = r.PathValue(muxVar)
			if muxValue == "" {
				return "", fmt.Errorf("Mux var %q not found for object type %q", muxVar, objectType)
			}

			// Expand fingerprints.
			if muxVar == "fingerprint" {
				muxValue = expandFingerprint(projectName, muxValue)
			}
		}

		muxValues = append(muxValues, muxValue)
	}

	// If using projects API we want to pass in the mux var, not the query parameter.
	if objectType == ObjectTypeProject && strings.HasPrefix(r.URL.Path, fmt.Sprintf("/%s/projects", version.APIVersion)) {
		if len(muxValues) == 0 {
			return "", errors.New("Missing project name path variable")
		}

		return ObjectProject(muxValues[0]), nil