You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
303 lines
11 KiB
Markdown
303 lines
11 KiB
Markdown
12 months ago
|
# cookie
|
||
|
|
|
||
|
|
[![NPM Version][npm-version-image]][npm-url]
|
||
|
|
[![NPM Downloads][npm-downloads-image]][npm-url]
|
||
|
|
[![Node.js Version][node-version-image]][node-version-url]
|
||
|
|
[![Build Status][github-actions-ci-image]][github-actions-ci-url]
|
||
|
|
[![Test Coverage][coveralls-image]][coveralls-url]
|
||
|
|
|
||
|
|
Basic HTTP cookie parser and serializer for HTTP servers.
|
||
|
|
|
||
|
|
## Installation
|
||
|
|
|
||
|
|
This is a [Node.js](https://nodejs.org/en/) module available through the
|
||
|
|
[npm registry](https://www.npmjs.com/). Installation is done using the
|
||
|
|
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ npm install cookie
|
||
|
|
```
|
||
|
|
|
||
|
|
## API
|
||
|
|
|
||
|
|
```js
|
||
|
|
var cookie = require('cookie');
|
||
|
|
```
|
||
|
|
|
||
|
|
### cookie.parse(str, options)
|
||
|
|
|
||
|
|
Parse an HTTP `Cookie` header string and returning an object of all cookie name-value pairs.
|
||
|
|
The `str` argument is the string representing a `Cookie` header value and `options` is an
|
||
|
|
optional object containing additional parsing options.
|
||
|
|
|
||
|
|
```js
|
||
|
|
var cookies = cookie.parse('foo=bar; equation=E%3Dmc%5E2');
|
||
|
|
// { foo: 'bar', equation: 'E=mc^2' }
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Options
|
||
|
|
|
||
|
|
`cookie.parse` accepts these properties in the options object.
|
||
|
|
|
||
|
|
##### decode
|
||
|
|
|
||
|
|
Specifies a function that will be used to decode a cookie's value. Since the value of a cookie
|
||
|
|
has a limited character set (and must be a simple string), this function can be used to decode
|
||
|
|
a previously-encoded cookie value into a JavaScript string or other object.
|
||
|
|
|
||
|
|
The default function is the global `decodeURIComponent`, which will decode any URL-encoded
|
||
|
|
sequences into their byte representations.
|
||
|
|
|
||
|
|
**note** if an error is thrown from this function, the original, non-decoded cookie value will
|
||
|
|
be returned as the cookie's value.
|
||
|
|
|
||
|
|
### cookie.serialize(name, value, options)
|
||
|
|
|
||
|
|
Serialize a cookie name-value pair into a `Set-Cookie` header string. The `name` argument is the
|
||
|
|
name for the cookie, the `value` argument is the value to set the cookie to, and the `options`
|
||
|
|
argument is an optional object containing additional serialization options.
|
||
|
|
|
||
|
|
```js
|
||
|
|
var setCookie = cookie.serialize('foo', 'bar');
|
||
|
|
// foo=bar
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Options
|
||
|
|
|
||
|
|
`cookie.serialize` accepts these properties in the options object.
|
||
|
|
|
||
|
|
##### domain
|
||
|
|
|
||
|
|
Specifies the value for the [`Domain` `Set-Cookie` attribute][rfc-6265-5.2.3]. By default, no
|
||
|
|
domain is set, and most clients will consider the cookie to apply to only the current domain.
|
||
|
|
|
||
|
|
##### encode
|
||
|
|
|
||
|
|
Specifies a function that will be used to encode a cookie's value. Since value of a cookie
|
||
|
|
has a limited character set (and must be a simple string), this function can be used to encode
|
||
|
|
a value into a string suited for a cookie's value.
|
||
|
|
|
||
|
|
The default function is the global `encodeURIComponent`, which will encode a JavaScript string
|
||
|
|
into UTF-8 byte sequences and then URL-encode any that fall outside of the cookie range.
|
||
|
|
|
||
|
|
##### expires
|
||
|
|
|
||
|
|
Specifies the `Date` object to be the value for the [`Expires` `Set-Cookie` attribute][rfc-6265-5.2.1].
|
||
|
|
By default, no expiration is set, and most clients will consider this a "non-persistent cookie" and
|
||
|
|
will delete it on a condition like exiting a web browser application.
|
||
|
|
|
||
|
|
**note** the [cookie storage model specification][rfc-6265-5.3] states that if both `expires` and
|
||
|
|
`maxAge` are set, then `maxAge` takes precedence, but it is possible not all clients by obey this,
|
||
|
|
so if both are set, they should point to the same date and time.
|
||
|
|
|
||
|
|
##### httpOnly
|
||
|
|
|
||
|
|
Specifies the `boolean` value for the [`HttpOnly` `Set-Cookie` attribute][rfc-6265-5.2.6]. When truthy,
|
||
|
|
the `HttpOnly` attribute is set, otherwise it is not. By default, the `HttpOnly` attribute is not set.
|
||
|
|
|
||
|
|
**note** be careful when setting this to `true`, as compliant clients will not allow client-side
|
||
|
|
JavaScript to see the cookie in `document.cookie`.
|
||
|
|
|
||
|
|
##### maxAge
|
||
|
|
|
||
|
|
Specifies the `number` (in seconds) to be the value for the [`Max-Age` `Set-Cookie` attribute][rfc-6265-5.2.2].
|
||
|
|
The given number will be converted to an integer by rounding down. By default, no maximum age is set.
|
||
|
|
|
||
|
|
**note** the [cookie storage model specification][rfc-6265-5.3] states that if both `expires` and
|
||
|
|
`maxAge` are set, then `maxAge` takes precedence, but it is possible not all clients by obey this,
|
||
|
|
so if both are set, they should point to the same date and time.
|
||
|
|
|
||
|
|
##### path
|
||
|
|
|
||
|
|
Specifies the value for the [`Path` `Set-Cookie` attribute][rfc-6265-5.2.4]. By default, the path
|
||
|
|
is considered the ["default path"][rfc-6265-5.1.4].
|
||
|
|
|
||
|
|
##### priority
|
||
|
|
|
||
|
|
Specifies the `string` to be the value for the [`Priority` `Set-Cookie` attribute][rfc-west-cookie-priority-00-4.1].
|
||
|
|
|
||
|
|
- `'low'` will set the `Priority` attribute to `Low`.
|
||
|
|
- `'medium'` will set the `Priority` attribute to `Medium`, the default priority when not set.
|
||
|
|
- `'high'` will set the `Priority` attribute to `High`.
|
||
|
|
|
||
|
|
More information about the different priority levels can be found in
|
||
|
|
[the specification][rfc-west-cookie-priority-00-4.1].
|
||
|
|
|
||
|
|
**note** This is an attribute that has not yet been fully standardized, and may change in the future.
|
||
|
|
This also means many clients may ignore this attribute until they understand it.
|
||
|
|
|
||
|
|
##### sameSite
|
||
|
|
|
||
|
|
Specifies the `boolean` or `string` to be the value for the [`SameSite` `Set-Cookie` attribute][rfc-6265bis-09-5.4.7].
|
||
|
|
|
||
|
|
- `true` will set the `SameSite` attribute to `Strict` for strict same site enforcement.
|
||
|
|
- `false` will not set the `SameSite` attribute.
|
||
|
|
- `'lax'` will set the `SameSite` attribute to `Lax` for lax same site enforcement.
|
||
|
|
- `'none'` will set the `SameSite` attribute to `None` for an explicit cross-site cookie.
|
||
|
|
- `'strict'` will set the `SameSite` attribute to `Strict` for strict same site enforcement.
|
||
|
|
|
||
|
|
More information about the different enforcement levels can be found in
|
||
|
|
[the specification][rfc-6265bis-09-5.4.7].
|
||
|
|
|
||
|
|
**note** This is an attribute that has not yet been fully standardized, and may change in the future.
|
||
|
|
This also means many clients may ignore this attribute until they understand it.
|
||
|
|
|
||
|
|
##### secure
|
||
|
|
|
||
|
|
Specifies the `boolean` value for the [`Secure` `Set-Cookie` attribute][rfc-6265-5.2.5]. When truthy,
|
||
|
|
the `Secure` attribute is set, otherwise it is not. By default, the `Secure` attribute is not set.
|
||
|
|
|
||
|
|
**note** be careful when setting this to `true`, as compliant clients will not send the cookie back to
|
||
|
|
the server in the future if the browser does not have an HTTPS connection.
|
||
|
|
|
||
|
|
## Example
|
||
|
|
|
||
|
|
The following example uses this module in conjunction with the Node.js core HTTP server
|
||
|
|
to prompt a user for their name and display it back on future visits.
|
||
|
|
|
||
|
|
```js
|
||
|
|
var cookie = require('cookie');
|
||
|
|
var escapeHtml = require('escape-html');
|
||
|
|
var http = require('http');
|
||
|
|
var url = require('url');
|
||
|
|
|
||
|
|
function onRequest(req, res) {
|
||
|
|
// Parse the query string
|
||
|
|
var query = url.parse(req.url, true, true).query;
|
||
|
|
|
||
|
|
if (query && query.name) {
|
||
|
|
// Set a new cookie with the name
|
||
|
|
res.setHeader('Set-Cookie', cookie.serialize('name', String(query.name), {
|
||
|
|
httpOnly: true,
|
||
|
|
maxAge: 60 * 60 * 24 * 7 // 1 week
|
||
|
|
}));
|
||
|
|
|
||
|
|
// Redirect back after setting cookie
|
||
|
|
res.statusCode = 302;
|
||
|
|
res.setHeader('Location', req.headers.referer || '/');
|
||
|
|
res.end();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Parse the cookies on the request
|
||
|
|
var cookies = cookie.parse(req.headers.cookie || '');
|
||
|
|
|
||
|
|
// Get the visitor name set in the cookie
|
||
|
|
var name = cookies.name;
|
||
|
|
|
||
|
|
res.setHeader('Content-Type', 'text/html; charset=UTF-8');
|
||
|
|
|
||
|
|
if (name) {
|
||
|
|
res.write('<p>Welcome back, <b>' + escapeHtml(name) + '</b>!</p>');
|
||
|
|
} else {
|
||
|
|
res.write('<p>Hello, new visitor!</p>');
|
||
|
|
}
|
||
|
|
|
||
|
|
res.write('<form method="GET">');
|
||
|
|
res.write('<input placeholder="enter your name" name="name"> <input type="submit" value="Set Name">');
|
||
|
|
res.end('</form>');
|
||
|
|
}
|
||
|
|
|
||
|
|
http.createServer(onRequest).listen(3000);
|
||
|
|
```
|
||
|
|
|
||
|
|
## Testing
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ npm test
|
||
|
|
```
|
||
|
|
|
||
|
|
## Benchmark
|
||
|
|
|
||
|
|
```
|
||
|
|
$ npm run bench
|
||
|
|
|
||
|
|
> cookie@0.4.2 bench
|
||
|
|
> node benchmark/index.js
|
||
|
|
|
||
|
|
node@16.14.0
|
||
|
|
v8@9.4.146.24-node.20
|
||
|
|
uv@1.43.0
|
||
|
|
zlib@1.2.11
|
||
|
|
brotli@1.0.9
|
||
|
|
ares@1.18.1
|
||
|
|
modules@93
|
||
|
|
nghttp2@1.45.1
|
||
|
|
napi@8
|
||
|
|
llhttp@6.0.4
|
||
|
|
openssl@1.1.1m+quic
|
||
|
|
cldr@40.0
|
||
|
|
icu@70.1
|
||
|
|
tz@2021a3
|
||
|
|
unicode@14.0
|
||
|
|
ngtcp2@0.1.0-DEV
|
||
|
|
nghttp3@0.1.0-DEV
|
||
|
|
|
||
|
|
> node benchmark/parse-top.js
|
||
|
|
|
||
|
|
cookie.parse - top sites
|
||
|
|
|
||
|
|
15 tests completed.
|
||
|
|
|
||
|
|
parse accounts.google.com x 2,421,245 ops/sec ±0.80% (188 runs sampled)
|
||
|
|
parse apple.com x 2,684,710 ops/sec ±0.59% (189 runs sampled)
|
||
|
|
parse cloudflare.com x 2,231,418 ops/sec ±0.76% (186 runs sampled)
|
||
|
|
parse docs.google.com x 2,316,357 ops/sec ±1.28% (187 runs sampled)
|
||
|
|
parse drive.google.com x 2,363,543 ops/sec ±0.49% (189 runs sampled)
|
||
|
|
parse en.wikipedia.org x 839,414 ops/sec ±0.53% (189 runs sampled)
|
||
|
|
parse linkedin.com x 553,797 ops/sec ±0.63% (190 runs sampled)
|
||
|
|
parse maps.google.com x 1,314,779 ops/sec ±0.72% (189 runs sampled)
|
||
|
|
parse microsoft.com x 153,783 ops/sec ±0.53% (190 runs sampled)
|
||
|
|
parse play.google.com x 2,249,574 ops/sec ±0.59% (187 runs sampled)
|
||
|
|
parse plus.google.com x 2,258,682 ops/sec ±0.60% (188 runs sampled)
|
||
|
|
parse sites.google.com x 2,247,069 ops/sec ±0.68% (189 runs sampled)
|
||
|
|
parse support.google.com x 1,456,840 ops/sec ±0.70% (187 runs sampled)
|
||
|
|
parse www.google.com x 1,046,028 ops/sec ±0.58% (188 runs sampled)
|
||
|
|
parse youtu.be x 937,428 ops/sec ±1.47% (190 runs sampled)
|
||
|
|
parse youtube.com x 963,878 ops/sec ±0.59% (190 runs sampled)
|
||
|
|
|
||
|
|
> node benchmark/parse.js
|
||
|
|
|
||
|
|
cookie.parse - generic
|
||
|
|
|
||
|
|
6 tests completed.
|
||
|
|
|
||
|
|
simple x 2,745,604 ops/sec ±0.77% (185 runs sampled)
|
||
|
|
decode x 557,287 ops/sec ±0.60% (188 runs sampled)
|
||
|
|
unquote x 2,498,475 ops/sec ±0.55% (189 runs sampled)
|
||
|
|
duplicates x 868,591 ops/sec ±0.89% (187 runs sampled)
|
||
|
|
10 cookies x 306,745 ops/sec ±0.49% (190 runs sampled)
|
||
|
|
100 cookies x 22,414 ops/sec ±2.38% (182 runs sampled)
|
||
|
|
```
|
||
|
|
|
||
|
|
## References
|
||
|
|
|
||
|
|
- [RFC 6265: HTTP State Management Mechanism][rfc-6265]
|
||
|
|
- [Same-site Cookies][rfc-6265bis-09-5.4.7]
|
||
|
|
|
||
|
|
[rfc-west-cookie-priority-00-4.1]: https://tools.ietf.org/html/draft-west-cookie-priority-00#section-4.1
|
||
|
|
[rfc-6265bis-09-5.4.7]: https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-09#section-5.4.7
|
||
|
|
[rfc-6265]: https://tools.ietf.org/html/rfc6265
|
||
|
|
[rfc-6265-5.1.4]: https://tools.ietf.org/html/rfc6265#section-5.1.4
|
||
|
|
[rfc-6265-5.2.1]: https://tools.ietf.org/html/rfc6265#section-5.2.1
|
||
|
|
[rfc-6265-5.2.2]: https://tools.ietf.org/html/rfc6265#section-5.2.2
|
||
|
|
[rfc-6265-5.2.3]: https://tools.ietf.org/html/rfc6265#section-5.2.3
|
||
|
|
[rfc-6265-5.2.4]: https://tools.ietf.org/html/rfc6265#section-5.2.4
|
||
|
|
[rfc-6265-5.2.5]: https://tools.ietf.org/html/rfc6265#section-5.2.5
|
||
|
|
[rfc-6265-5.2.6]: https://tools.ietf.org/html/rfc6265#section-5.2.6
|
||
|
|
[rfc-6265-5.3]: https://tools.ietf.org/html/rfc6265#section-5.3
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
[MIT](LICENSE)
|
||
|
|
|
||
|
|
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/cookie/master
|
||
|
|
[coveralls-url]: https://coveralls.io/r/jshttp/cookie?branch=master
|
||
|
|
[github-actions-ci-image]: https://img.shields.io/github/workflow/status/jshttp/cookie/ci/master?label=ci
|
||
|
|
[github-actions-ci-url]: https://github.com/jshttp/cookie/actions/workflows/ci.yml
|
||
|
|
[node-version-image]: https://badgen.net/npm/node/cookie
|
||
|
|
[node-version-url]: https://nodejs.org/en/download
|
||
|
|
[npm-downloads-image]: https://badgen.net/npm/dm/cookie
|
||
|
|
[npm-url]: https://npmjs.org/package/cookie
|
||
|
|
[npm-version-image]: https://badgen.net/npm/v/cookie
|