@aikidosec/firewall
Version:
Zen by Aikido is an embedded Application Firewall that autonomously protects Node.js apps against common and critical attacks, provides rate limiting, detects malicious traffic (including bots), and more.
43 lines (42 loc) • 1.4 kB
JavaScript
;
// oxlint-disable no-control-regex
// oxlint-disable no-useless-escape
/**
* Based on https://github.com/validatorjs/validator.js/blob/master/src/lib/isEmail.js
* MIT License - Copyright (c) 2018 Chris O'Hara
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = isEmailString;
const isFQDN_1 = require("./isFQDN");
const emailUserUtf8Part = /^[a-z\d!#\$%&'\*\+\-\/=\?\^_`{\|}~\u00A1-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+$/i;
const quotedEmailUserUtf8 = /^([\s\x01-\x08\x0b\x0c\x0e-\x1f\x7f\x21\x23-\x5b\x5d-\x7e\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]|(\\[\x01-\x09\x0b\x0c\x0d-\x7f\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))*$/i;
function isEmailString(str) {
if (str.length > 100) {
return false;
}
const parts = str.split("@");
if (parts.length < 2) {
return false;
}
const domain = parts.pop();
if (!domain) {
return false;
}
const user = parts.join("@");
if (!user) {
return false;
}
if (!(0, isFQDN_1.default)(domain)) {
return false;
}
if (user[0] === '"' && user[user.length - 1] === '"') {
return quotedEmailUserUtf8.test(user.slice(1, user.length - 1));
}
const userParts = user.split(".");
for (const part of userParts) {
if (!emailUserUtf8Part.test(part)) {
return false;
}
}
return true;
}