function cookieParser(secret, options) {
return function cookieParser(req, res, next) {
if (req.cookies) {
return next();
}
var cookies = req.headers.cookie;
var secrets = !secret || Array.isArray(secret)
? (secret || [])
: [secret];
req.secret = secrets[0];
req.cookies = Object.create(null);
req.signedCookies = Object.create(null);
// no cookies
if (!cookies) {
return next();
}
req.cookies = cookie.parse(cookies, options);
// parse signed cookies
if (secrets.length !== 0) {
req.signedCookies = signedCookies(req.cookies, secrets);
req.signedCookies = JSONCookies(req.signedCookies);
}
// parse JSON cookies
req.cookies = JSONCookies(req.cookies);
next();
};
}
res.cookie = function (name, value, options) {
var opts = merge({}, options);
var secret = this.req.secret;
var signed = opts.signed;
if (signed && !secret) {
throw new Error('cookieParser("secret") required for signed cookies');
}
var val = typeof value === 'object'
? 'j:' + JSON.stringify(value)
: String(value);
if (signed) {
val = 's:' + sign(val, secret);
}
if ('maxAge' in opts) {
opts.expires = new Date(Date.now() + opts.maxAge);
opts.maxAge /= 1000;
}
if (opts.path == null) {
opts.path = '/';
}
this.append('Set-Cookie', cookie.serialize(name, String(val), opts));
return this;
};
var fieldContentRegExp = /^[\u0009\u0020-\u007e\u0080-\u00ff]+$/;
function serialize(name, val, options) {
var opt = options || {};
var enc = opt.encode || encode;
if (typeof enc !== 'function') {
throw new TypeError('option encode is invalid');
}
if (!fieldContentRegExp.test(name)) {
throw new TypeError('argument name is invalid');
}
var value = enc(val);
if (value && !fieldContentRegExp.test(value)) {
throw new TypeError('argument val is invalid');
}
var str = name + '=' + value;
if (null != opt.maxAge) {
var maxAge = opt.maxAge - 0;
if (isNaN(maxAge)) throw new Error('maxAge should be a Number');
str += '; Max-Age=' + Math.floor(maxAge);
}
if (opt.domain) {
if (!fieldContentRegExp.test(opt.domain)) {
throw new TypeError('option domain is invalid');
}
str += '; Domain=' + opt.domain;
}
if (opt.path) {
if (!fieldContentRegExp.test(opt.path)) {
throw new TypeError('option path is invalid');
}
str += '; Path=' + opt.path;
}
if (opt.expires) {
if (typeof opt.expires.toUTCString !== 'function') {
throw new TypeError('option expires is invalid');
}
str += '; Expires=' + opt.expires.toUTCString();
}
if (opt.httpOnly) {
str += '; HttpOnly';
}
if (opt.secure) {
str += '; Secure';
}
if (opt.sameSite) {
var sameSite = typeof opt.sameSite === 'string'
? opt.sameSite.toLowerCase() : opt.sameSite;
switch (sameSite) {
case true:
str += '; SameSite=Strict';
break;
case 'lax':
str += '; SameSite=Lax';
break;
case 'strict':
str += '; SameSite=Strict';
break;
default:
throw new TypeError('option sameSite is invalid');
}
}
return str;
}
function JSONCookies(obj) {
var cookies = Object.keys(obj);
var key;
var val;
for (var i = 0; i < cookies.length; i++) {
key = cookies[i];
val = JSONCookie(obj[key]);
if (val) {
obj[key] = val;
}
}
return obj;
}
function signedCookie(str, secret) {
if (typeof str !== 'string') {
return undefined;
}
if (str.substr(0, 2) !== 's:') {
return str;
}
var secrets = !secret || Array.isArray(secret)
? (secret || [])
: [secret];
for (var i = 0; i < secrets.length; i++) {
var val = signature.unsign(str.slice(2), secrets[i]);
if (val !== false) {
return val;
}
}
return false;
}
