Ghost/core/server/services/auth/authorize.js

const labs = require('../labs');
const session = require('./session');
const common = require('../../lib/common');

const authorize = {
    // Workaround for missing permissions
    // TODO: rework when https://github.com/TryGhost/Ghost/issues/3911 is  done
    requiresAuthorizedUser: function requiresAuthorizedUser(req, res, next) {
        if (req.user && req.user.id) {
            return next();
        } else {
            return next(new common.errors.NoPermissionError({message: common.i18n.t('errors.middleware.auth.pleaseSignIn')}));
        }
    },

    // ### Require user depending on public API being activated.
    requiresAuthorizedUserPublicAPI: function requiresAuthorizedUserPublicAPI(req, res, next) {
        if (labs.isSet('publicAPI') === true) {
            return next();
        } else {
            if (req.user && req.user.id) {
                return next();
            } else {
                return next(new common.errors.NoPermissionError({message: common.i18n.t('errors.middleware.auth.pleaseSignIn')}));
            }
        }
    },

    // Requires the authenticated client to match specific client
    requiresAuthorizedClient: function requiresAuthorizedClient(client) {
        return function doAuthorizedClient(req, res, next) {
            if (client && (!req.client || !req.client.name || req.client.name !== client)) {
                return next(new common.errors.NoPermissionError({message: common.i18n.t('errors.permissions.noPermissionToAction')}));
            }

            return next();
        };
    },

    authorizeAdminAPI: [session.ensureUser]
};

module.exports = authorize;