Add enableUnixSockets option (#2062)

Co-authored-by: Sindre Sorhus <[email protected]>
Co-authored-by: Szymon Marczak <[email protected]>

Author: 3 people

Diff for: documentation/2-options.md

@@ -918,6 +918,37 @@ By default, requests will not use [method rewriting](https://datatracker.ietf.or
 
 For example, when sending a `POST` request and receiving a `302`, it will resend the body to the new location using the same HTTP method (`POST` in this case). To rewrite the request as `GET`, set this option to `true`.
 
+### `enableUnixSockets`
+
+**Type: `boolean`**\
+**Default: `true`**
+
+When enabled, requests can also be sent via [UNIX Domain Sockets](https://serverfault.com/questions/124517/what-is-the-difference-between-unix-sockets-and-tcp-ip-sockets). Please note that in the upcoming major release (Got v13) this default will be changed to `false` for security reasons.
+
+> **Warning**
+> Make sure you do your own URL sanitizing if you accept untrusted user input for the URL.
+
+Use the following URL scheme: `PROTOCOL://unix:SOCKET:PATH`
+
+- `PROTOCOL` - `http` or `https`
+- `SOCKET` - Absolute path to a UNIX domain socket, for example: `/var/run/docker.sock`
+- `PATH` - Request path, for example: `/v2/keys`
+
+```js
+import got from 'got';
+
+await got('http://unix:/var/run/docker.sock:/containers/json', {enableUnixSockets: true});
+
+// Or without protocol (HTTP by default)
+await got('unix:/var/run/docker.sock:/containers/json', {enableUnixSockets: true});
+
+// Disable Unix sockets
+const gotUnixSocketsDisabled = got.extend({enableUnixSockets: false});
+
+// RequestError: Using UNIX domain sockets but option `enableUnixSockets` is not enabled
+await gotUnixSocketsDisabled('http://unix:/var/run/docker.sock:/containers/json');
+```
+
 ## Methods
 
 ### `options.merge(other: Options | OptionsInit)`

Diff for: documentation/migration-guides/axios.md

@@ -24,7 +24,7 @@ We deeply care about readability, so we renamed these options:
 
 - `httpAgent` → [`agent.http`](../2-options.md#agent)
 - `httpsAgent` → [`agent.https`](../2-options.md#agent)
-- `socketPath` → [`url`](../tips.md#unix)
+- `socketPath` → [`url`](../2-options.md#enableunixsockets)
 - `responseEncoding` → [`encoding`](../2-options.md#encoding)
 - `auth.username` → [`username`](../2-options.md#username)
 - `auth.password` → [`password`](../2-options.md#password)

Diff for: documentation/migration-guides/request.md

@@ -46,7 +46,7 @@ These Got options are the same as with Request:
 - [`localAddress`](../2-options.md#localaddress)
 - [`headers`](../2-options.md#headers)
 - [`createConnection`](../2-options.md#createconnection)
-- [UNIX sockets](../tips.md#unixsockets): `http://unix:SOCKET:PATH`
+- [UNIX sockets](../2-options.md#enableunixsockets): `http://unix:SOCKET:PATH`
 
 The `time` option does not exist, assume [it's always true](../6-timeout.md).
 

Diff for: documentation/tips.md

@@ -92,21 +92,7 @@ for await (const commitData of pagination) {
 <a name="unix"></a>
 ### UNIX Domain Sockets
 
-Requests can also be sent via [UNIX Domain Sockets](https://serverfault.com/questions/124517/what-is-the-difference-between-unix-sockets-and-tcp-ip-sockets).\
-Use the following URL scheme: `PROTOCOL://unix:SOCKET:PATH`
-
-- `PROTOCOL` - `http` or `https`
-- `SOCKET` - Absolute path to a unix domain socket, for example: `/var/run/docker.sock`
-- `PATH` - Request path, for example: `/v2/keys`
-
-```js
-import got from 'got';
-
-await got('http://unix:/var/run/docker.sock:/containers/json');
-
-// Or without protocol (HTTP by default)
-await got('unix:/var/run/docker.sock:/containers/json');
-```
+See the [`enableUnixSockets` option](./2-options.md#enableunixsockets).
 
 ### Testing
 

Diff for: readme.md

@@ -202,7 +202,7 @@ For advanced JSON usage, check out the [`parseJson`](documentation/2-options.md#
 
 - [x] [RFC compliant caching](documentation/cache.md)
 - [x] [Proxy support](documentation/tips.md#proxying)
-- [x] [Unix Domain Sockets](documentation/tips.md#unix)
+- [x] [Unix Domain Sockets](documentation/2-options.md#enableunixsockets)
 
 #### Integration
 

Diff for: source/core/options.ts

@@ -827,6 +827,7 @@ const defaultInternals: Options['_internals'] = {
 	},
 	setHost: true,
 	maxHeaderSize: undefined,
+	enableUnixSockets: true,
 };
 
 const cloneInternals = (internals: typeof defaultInternals) => {
@@ -1428,6 +1429,10 @@ export default class Options {
 		}
 
 		if (url.hostname === 'unix') {
+			if (!this._internals.enableUnixSockets) {
+				throw new Error('Using UNIX domain sockets but option `enableUnixSockets` is not enabled');
+			}
+
 			const matches = /(?<socketPath>.+?):(?<path>.+)/.exec(`${url.pathname}${url.search}`);
 
 			if (matches?.groups) {
@@ -2345,6 +2350,16 @@ export default class Options {
 		this._internals.maxHeaderSize = value;
 	}
 
+	get enableUnixSockets() {
+		return this._internals.enableUnixSockets;
+	}
+
+	set enableUnixSockets(value: boolean) {
+		assert.boolean(value);
+
+		this._internals.enableUnixSockets = value;
+	}
+
 	// eslint-disable-next-line @typescript-eslint/naming-convention
 	toJSON() {
 		return {...this._internals};

Diff for: test/redirects.ts

@@ -42,10 +42,12 @@ const unixHostname: Handler = (_request, response) => {
 	response.end();
 };
 
-test('cannot redirect to unix protocol', withServer, async (t, server, got) => {
+test('cannot redirect to UNIX protocol when UNIX sockets are enabled', withServer, async (t, server, got) => {
 	server.get('/protocol', unixProtocol);
 	server.get('/hostname', unixHostname);
 
+	t.true(got.defaults.options.enableUnixSockets);
+
 	await t.throwsAsync(got('protocol'), {
 		message: 'Cannot redirect to UNIX socket',
 		instanceOf: RequestError,
@@ -57,6 +59,25 @@ test('cannot redirect to unix protocol', withServer, async (t, server, got) => {
 	});
 });
 
+test('cannot redirect to UNIX protocol when UNIX sockets are not enabled', withServer, async (t, server, got) => {
+	server.get('/protocol', unixProtocol);
+	server.get('/hostname', unixHostname);
+
+	const gotUnixSocketsDisabled = got.extend({enableUnixSockets: false});
+
+	t.false(gotUnixSocketsDisabled.defaults.options.enableUnixSockets);
+
+	await t.throwsAsync(gotUnixSocketsDisabled('protocol'), {
+		message: 'Cannot redirect to UNIX socket',
+		instanceOf: RequestError,
+	});
+
+	await t.throwsAsync(gotUnixSocketsDisabled('hostname'), {
+		message: 'Cannot redirect to UNIX socket',
+		instanceOf: RequestError,
+	});
+});
+
 test('follows redirect', withServer, async (t, server, got) => {
 	server.get('/', reachedHandler);
 	server.get('/finite', finiteHandler);

Diff for: test/unix-socket.ts

@@ -68,4 +68,29 @@ if (process.platform !== 'win32') {
 		const url = format('http://unix:%s:%s', server.socketPath, '/');
 		t.is((await got(url)).body, 'ok');
 	});
+
+	test('`unix:` fails when UNIX sockets are not enabled', async t => {
+		const gotUnixSocketsDisabled = got.extend({enableUnixSockets: false});
+
+		t.false(gotUnixSocketsDisabled.defaults.options.enableUnixSockets);
+		await t.throwsAsync(
+			gotUnixSocketsDisabled('unix:'),
+			{
+				message: 'Using UNIX domain sockets but option `enableUnixSockets` is not enabled',
+			},
+		);
+	});
+
+	test('`http://unix:/` fails when UNIX sockets are not enabled', async t => {
+		const gotUnixSocketsDisabled = got.extend({enableUnixSockets: false});
+
+		t.false(gotUnixSocketsDisabled.defaults.options.enableUnixSockets);
+
+		await t.throwsAsync(
+			gotUnixSocketsDisabled('http://unix:'),
+			{
+				message: 'Using UNIX domain sockets but option `enableUnixSockets` is not enabled',
+			},
+		);
+	});
 }