'use strict'
const assert = require('assert')
const { kHeadersList } = require('../core/symbols')
function isCTLExcludingHtab (value) {
if (value.length === 0) {
return false
}
for (const char of value) {
const code = char.charCodeAt(0)
if (
(code >= 0x00 || code <= 0x08) ||
(code >= 0x0A || code <= 0x1F) ||
code === 0x7F
) {
return false
}
}
}
/**
CHAR = <any US-ASCII character (octets 0 - 127)>
token = 1*<any CHAR except CTLs or separators>
separators = "(" | ")" | "<" | ">" | "@"
| "," | ";" | ":" | "\" | <">
| "/" | "[" | "]" | "?" | "="
| "{" | "}" | SP | HT
* @param {string} name
*/
function validateCookieName (name) {
for (const char of name) {
const code = char.charCodeAt(0)
if (
(code <= 0x20 || code > 0x7F) ||
char === '(' ||
char === ')' ||
char === '>' ||
char === '<' ||
char === '@' ||
char === ',' ||
char === ';' ||
char === ':' ||
char === '\\' ||
char === '"' ||
char === '/' ||
char === '[' ||
char === ']' ||
char === '?' ||
char === '=' ||
char === '{' ||
char === '}'
) {
throw new Error('Invalid cookie name')
}
}
}
/**
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
* @param {string} value
*/
function validateCookieValue (value) {
for (const char of value) {
const code = char.charCodeAt(0)
if (
code < 0x21 || // exclude CTLs (0-31)
code === 0x22 ||
code === 0x2C ||
code === 0x3B ||
code === 0x5C ||
code > 0x7E // non-ascii
) {
throw new Error('Invalid header value')
}
}
}
/**
* path-value = <any CHAR except CTLs or ";">
* @param {string} path
*/
function validateCookiePath (path) {
for (const char of path) {
const code = char.charCodeAt(0)
if (code < 0x21 || char === ';') {
throw new Error('Invalid cookie path')
}
}
}
/**
* I have no idea why these values aren't allowed to be honest,
* but Deno tests these. - Khafra
* @param {string} domain
*/
function validateCookieDomain (domain) {
if (
domain.startsWith('-') ||
domain.endsWith('.') ||
domain.endsWith('-')
) {
throw new Error('Invalid cookie domain')
}
}
/**
* @see https://www.rfc-editor.org/rfc/rfc7231#section-7.1.1.1
* @param {number|Date} date
IMF-fixdate = day-name "," SP date1 SP time-of-day SP GMT
; fixed length/zone/capitalization subset of the format
; see Section 3.3 of [RFC5322]
day-name = %x4D.6F.6E ; "Mon", case-sensitive
/ %x54.75.65 ; "Tue", case-sensitive
/ %x57.65.64 ; "Wed", case-sensitive
/ %x54.68.75 ; "Thu", case-sensitive
/ %x46.72.69 ; "Fri", case-sensitive
/ %x53.61.74 ; "Sat", case-sensitive
/ %x53.75.6E ; "Sun", case-sensitive
date1 = day SP month SP year
; e.g., 02 Jun 1982
day = 2DIGIT
month = %x4A.61.6E ; "Jan", case-sensitive
/ %x46.65.62 ; "Feb", case-sensitive
/ %x4D.61.72 ; "Mar", case-sensitive
/ %x41.70.72 ; "Apr", case-sensitive
/ %x4D.61.79 ; "May", case-sensitive
/ %x4A.75.6E ; "Jun", case-sensitive
/ %x4A.75.6C ; "Jul", case-sensitive
/ %x41.75.67 ; "Aug", case-sensitive
/ %x53.65.70 ; "Sep", case-sensitive
/ %x4F.63.74 ; "Oct", case-sensitive
/ %x4E.6F.76 ; "Nov", case-sensitive
/ %x44.65.63 ; "Dec", case-sensitive
year = 4DIGIT
GMT = %x47.4D.54 ; "GMT", case-sensitive
time-of-day = hour ":" minute ":" second
; 00:00:00 - 23:59:60 (leap second)
hour = 2DIGIT
minute = 2DIGIT
second = 2DIGIT
*/
function toIMFDate (date) {
if (typeof date === 'number') {
date = new Date(date)
}
const days = [
'Sun', 'Mon', 'Tue', 'Wed',
'Thu', 'Fri', 'Sat'
]
const months = [
'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
]
const dayName = days[date.getUTCDay()]
const day = date.getUTCDate().toString().padStart(2, '0')
const month = months[date.getUTCMonth()]
const year = date.getUTCFullYear()
const hour = date.getUTCHours().toString().padStart(2, '0')
const minute = date.getUTCMinutes().toString().padStart(2, '0')
const second = date.getUTCSeconds().toString().padStart(2, '0')
return `${dayName}, ${day} ${month} ${year} ${hour}:${minute}:${second} GMT`
}
/**
max-age-av = "Max-Age=" non-zero-digit *DIGIT
; In practice, both expires-av and max-age-av
; are limited to dates representable by the
; user agent.
* @param {number} maxAge
*/
function validateCookieMaxAge (maxAge) {
if (maxAge < 0) {
throw new Error('Invalid cookie max-age')
}
}
/**
* @see https://www.rfc-editor.org/rfc/rfc6265#section-4.1.1
* @param {import('./index').Cookie} cookie
*/
function stringify (cookie) {
if (cookie.name.length === 0) {
return null
}
validateCookieName(cookie.name)
validateCookieValue(cookie.value)
const out = [`${cookie.name}=${cookie.value}`]
// https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-cookie-prefixes-00#section-3.1
// https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-cookie-prefixes-00#section-3.2
if (cookie.name.startsWith('__Secure-')) {
cookie.secure = true
}
if (cookie.name.startsWith('__Host-')) {
cookie.secure = true
cookie.domain = null
cookie.path = '/'
}
if (cookie.secure) {
out.push('Secure')
}
if (cookie.httpOnly) {
out.push('HttpOnly')
}
if (typeof cookie.maxAge === 'number') {
validateCookieMaxAge(cookie.maxAge)
out.push(`Max-Age=${cookie.maxAge}`)
}
if (cookie.domain) {
validateCookieDomain(cookie.domain)
out.push(`Domain=${cookie.domain}`)
}
if (cookie.path) {
validateCookiePath(cookie.path)
out.push(`Path=${cookie.path}`)
}
if (cookie.expires && cookie.expires.toString() !== 'Invalid Date') {
out.push(`Expires=${toIMFDate(cookie.expires)}`)
}
if (cookie.sameSite) {
out.push(`SameSite=${cookie.sameSite}`)
}
for (const part of cookie.unparsed) {
if (!part.includes('=')) {
throw new Error('Invalid unparsed')
}
const [key, ...value] = part.split('=')
out.push(`${key.trim()}=${value.join('=')}`)
}
return out.join('; ')
}
let kHeadersListNode
function getHeadersList (headers) {
if (headers[kHeadersList]) {
return headers[kHeadersList]
}
if (!kHeadersListNode) {
kHeadersListNode = Object.getOwnPropertySymbols(headers).find(
(symbol) => symbol.description === 'headers list'
)
assert(kHeadersListNode, 'Headers cannot be parsed')
}
const headersList = headers[kHeadersListNode]
assert(headersList)
return headersList
}
module.exports = {
isCTLExcludingHtab,
stringify,
getHeadersList
}
