@datadome/node-core/lib/limits.js

Core package for server-side modules using Node.js

/**
 * Length limits for values to validate with the DataDome API.
 * @module @datadome/node-core/limits
 */

/// <reference path="./_typedefs.js" />

/**
 *
 * @param {string} name - The header name
 * @returns {number} The truncation to respect for the given header name
 */
module.exports = function (name) {
    switch (name) {
        case 'XForwardedForIP':
            return -512;

        case 'SecCHDeviceMemory':
        case 'SecCHUAMobile':
        case 'SecFetchUser':
            return 8;

        case 'SecCHUAArch':
            return 16;

        case 'SecCHUAPlatform':
        case 'SecFetchDest':
        case 'SecFetchMode':
            return 32;

        case 'ContentType':
        case 'SecFetchSite':
            return 64;

        case 'AcceptCharset':
        case 'AcceptEncoding':
        case 'CacheControl':
        case 'ClientID':
        case 'Connection':
        case 'From':
        case 'GraphQLOperationName':
        case 'Pragma':
        case 'SecCHUA':
        case 'SecCHUAModel':
        case 'TrueClientIP':
        case 'UserID':
        case 'X-Real-IP':
        case 'X-Requested-With':
            return 128;

        case 'AcceptLanguage':
        case 'Via':
        case 'SecCHUAFullVersionList':
            return 256;

        case 'Accept':
        case 'HeadersList':
        case 'Host':
        case 'Origin':
        case 'ServerHostname':
        case 'ServerName':
            return 512;

        case 'UserAgent':
            return 768;

        case 'Referer':
            return 1024;

        case 'Request':
            return 2048;
    }

    return 0;
};