cookie
Version:
HTTP server cookie parsing and serialization
239 lines • 8.34 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = parse;
exports.serialize = serialize;
/**
* RegExp to match cookie-name in RFC 6265 sec 4.1.1
* This refers out to the obsoleted definition of token in RFC 2616 sec 2.2
* which has been replaced by the token definition in RFC 7230 appendix B.
*
* cookie-name = token
* token = 1*tchar
* tchar = "!" / "#" / "$" / "%" / "&" / "'" /
* "*" / "+" / "-" / "." / "^" / "_" /
* "`" / "|" / "~" / DIGIT / ALPHA
*
* Note: Allowing more characters - https://github.com/jshttp/cookie/issues/191
* Allow same range as cookie value, except `=`, which delimits end of name.
*/
const cookieNameRegExp = /^[\u0021-\u003A\u003C\u003E-\u007E]+$/;
/**
* RegExp to match cookie-value in RFC 6265 sec 4.1.1
*
* cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
* cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
* ; US-ASCII characters excluding CTLs,
* ; whitespace DQUOTE, comma, semicolon,
* ; and backslash
*
* Allowing more characters: https://github.com/jshttp/cookie/issues/191
* Comma, backslash, and DQUOTE are not part of the parsing algorithm.
*/
const cookieValueRegExp = /^[\u0021-\u003A\u003C-\u007E]*$/;
/**
* RegExp to match domain-value in RFC 6265 sec 4.1.1
*
* domain-value = <subdomain>
* ; defined in [RFC1034], Section 3.5, as
* ; enhanced by [RFC1123], Section 2.1
* <subdomain> = <label> | <subdomain> "." <label>
* <label> = <let-dig> [ [ <ldh-str> ] <let-dig> ]
* Labels must be 63 characters or less.
* 'let-dig' not 'letter' in the first char, per RFC1123
* <ldh-str> = <let-dig-hyp> | <let-dig-hyp> <ldh-str>
* <let-dig-hyp> = <let-dig> | "-"
* <let-dig> = <letter> | <digit>
* <letter> = any one of the 52 alphabetic characters A through Z in
* upper case and a through z in lower case
* <digit> = any one of the ten digits 0 through 9
*
* Keep support for leading dot: https://github.com/jshttp/cookie/issues/173
*
* > (Note that a leading %x2E ("."), if present, is ignored even though that
* character is not permitted, but a trailing %x2E ("."), if present, will
* cause the user agent to ignore the attribute.)
*/
const domainValueRegExp = /^([.]?[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)([.][a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)*$/i;
/**
* RegExp to match path-value in RFC 6265 sec 4.1.1
*
* path-value = <any CHAR except CTLs or ";">
* CHAR = %x01-7F
* ; defined in RFC 5234 appendix B.1
*/
const pathValueRegExp = /^[\u0020-\u003A\u003D-\u007E]*$/;
const __toString = Object.prototype.toString;
const NullObject = /* @__PURE__ */ (() => {
const C = function () { };
C.prototype = Object.create(null);
return C;
})();
/**
* Parse a cookie header.
*
* Parse the given cookie header string into an object
* The object has the various cookies as keys(names) => values
*/
function parse(str, options) {
const obj = new NullObject();
const len = str.length;
// RFC 6265 sec 4.1.1, RFC 2616 2.2 defines a cookie name consists of one char minimum, plus '='.
if (len < 2)
return obj;
const dec = options?.decode || decode;
let index = 0;
do {
const eqIdx = str.indexOf("=", index);
if (eqIdx === -1)
break; // No more cookie pairs.
const colonIdx = str.indexOf(";", index);
const endIdx = colonIdx === -1 ? len : colonIdx;
if (eqIdx > endIdx) {
// backtrack on prior semicolon
index = str.lastIndexOf(";", eqIdx - 1) + 1;
continue;
}
const keyStartIdx = startIndex(str, index, eqIdx);
const keyEndIdx = endIndex(str, eqIdx, keyStartIdx);
const key = str.slice(keyStartIdx, keyEndIdx);
// only assign once
if (obj[key] === undefined) {
let valStartIdx = startIndex(str, eqIdx + 1, endIdx);
let valEndIdx = endIndex(str, endIdx, valStartIdx);
const value = dec(str.slice(valStartIdx, valEndIdx));
obj[key] = value;
}
index = endIdx + 1;
} while (index < len);
return obj;
}
function startIndex(str, index, max) {
do {
const code = str.charCodeAt(index);
if (code !== 0x20 /* */ && code !== 0x09 /* \t */)
return index;
} while (++index < max);
return max;
}
function endIndex(str, index, min) {
while (index > min) {
const code = str.charCodeAt(--index);
if (code !== 0x20 /* */ && code !== 0x09 /* \t */)
return index + 1;
}
return min;
}
/**
* Serialize data into a cookie header.
*
* Serialize a name value pair into a cookie string suitable for
* http headers. An optional options object specifies cookie parameters.
*
* serialize('foo', 'bar', { httpOnly: true })
* => "foo=bar; httpOnly"
*/
function serialize(name, val, options) {
const enc = options?.encode || encodeURIComponent;
if (!cookieNameRegExp.test(name)) {
throw new TypeError(`argument name is invalid: ${name}`);
}
const value = enc(val);
if (!cookieValueRegExp.test(value)) {
throw new TypeError(`argument val is invalid: ${val}`);
}
let str = name + "=" + value;
if (!options)
return str;
if (options.maxAge !== undefined) {
if (!Number.isInteger(options.maxAge)) {
throw new TypeError(`option maxAge is invalid: ${options.maxAge}`);
}
str += "; Max-Age=" + options.maxAge;
}
if (options.domain) {
if (!domainValueRegExp.test(options.domain)) {
throw new TypeError(`option domain is invalid: ${options.domain}`);
}
str += "; Domain=" + options.domain;
}
if (options.path) {
if (!pathValueRegExp.test(options.path)) {
throw new TypeError(`option path is invalid: ${options.path}`);
}
str += "; Path=" + options.path;
}
if (options.expires) {
if (!isDate(options.expires) ||
!Number.isFinite(options.expires.valueOf())) {
throw new TypeError(`option expires is invalid: ${options.expires}`);
}
str += "; Expires=" + options.expires.toUTCString();
}
if (options.httpOnly) {
str += "; HttpOnly";
}
if (options.secure) {
str += "; Secure";
}
if (options.partitioned) {
str += "; Partitioned";
}
if (options.priority) {
const priority = typeof options.priority === "string"
? options.priority.toLowerCase()
: undefined;
switch (priority) {
case "low":
str += "; Priority=Low";
break;
case "medium":
str += "; Priority=Medium";
break;
case "high":
str += "; Priority=High";
break;
default:
throw new TypeError(`option priority is invalid: ${options.priority}`);
}
}
if (options.sameSite) {
const sameSite = typeof options.sameSite === "string"
? options.sameSite.toLowerCase()
: options.sameSite;
switch (sameSite) {
case true:
case "strict":
str += "; SameSite=Strict";
break;
case "lax":
str += "; SameSite=Lax";
break;
case "none":
str += "; SameSite=None";
break;
default:
throw new TypeError(`option sameSite is invalid: ${options.sameSite}`);
}
}
return str;
}
/**
* URL-decode string value. Optimized to skip native call when no %.
*/
function decode(str) {
if (str.indexOf("%") === -1)
return str;
try {
return decodeURIComponent(str);
}
catch (e) {
return str;
}
}
/**
* Determine if value is a Date.
*/
function isDate(val) {
return __toString.call(val) === "[object Date]";
}
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