media-cloud-sync / includes / sdk / s3 / Aws / S3 / S3EndpointMiddleware.php

S3EndpointMiddleware.php in Media Cloud Sync 1.0.2, at includes/sdk/s3/Aws/S3/S3EndpointMiddleware.php

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1	<?php
2
3	namespace Dudlewebs\WPMCS\s3\Aws\S3;
4
5	use Dudlewebs\WPMCS\s3\Aws\Arn\ArnParser;
6	use Dudlewebs\WPMCS\s3\Aws\Arn\ObjectLambdaAccessPointArn;
7	use Dudlewebs\WPMCS\s3\Aws\ClientResolver;
8	use Dudlewebs\WPMCS\s3\Aws\CommandInterface;
9	use Dudlewebs\WPMCS\s3\Aws\Endpoint\EndpointProvider;
10	use Dudlewebs\WPMCS\s3\Aws\Endpoint\PartitionEndpointProvider;
11	use Dudlewebs\WPMCS\s3\GuzzleHttp\Exception\InvalidArgumentException;
12	use Dudlewebs\WPMCS\s3\GuzzleHttp\Psr7\Uri;
13	use Dudlewebs\WPMCS\s3\Psr\Http\Message\RequestInterface;
14	/**
15	* Used to update the URL used for S3 requests to support:
16	* S3 Accelerate, S3 DualStack or Both. It will build to
17	* host style paths unless specified, including for S3
18	* DualStack.
19	*
20	* IMPORTANT: this middleware must be added after the "build" step.
21	*
22	* @internal
23	*/
24	class S3EndpointMiddleware
25	{
26	private static $exclusions = ['CreateBucket' => \true, 'DeleteBucket' => \true, 'ListBuckets' => \true];
27	const NO_PATTERN = 0;
28	const DUALSTACK = 1;
29	const ACCELERATE = 2;
30	const ACCELERATE_DUALSTACK = 3;
31	const PATH_STYLE = 4;
32	const HOST_STYLE = 5;
33	/** @var bool */
34	private $accelerateByDefault;
35	/** @var bool */
36	private $dualStackByDefault;
37	/** @var bool */
38	private $pathStyleByDefault;
39	/** @var string */
40	private $region;
41	/** @var callable */
42	private $endpointProvider;
43	/** @var callable */
44	private $nextHandler;
45	/** @var string */
46	private $endpoint;
47	/**
48	* Create a middleware wrapper function
49	*
50	* @param string $region
51	* @param EndpointProvider $endpointProvider
52	* @param array $options
53	*
54	* @return callable
55	*/
56	public static function wrap($region, $endpointProvider, array $options)
57	{
58	return function (callable $handler) use($region, $endpointProvider, $options) {
59	return new self($handler, $region, $options, $endpointProvider);
60	};
61	}
62	public function __construct(callable $nextHandler, $region, array $options, $endpointProvider = null)
63	{
64	$this->pathStyleByDefault = isset($options['path_style']) ? (bool) $options['path_style'] : \false;
65	$this->dualStackByDefault = isset($options['dual_stack']) ? (bool) $options['dual_stack'] : \false;
66	$this->accelerateByDefault = isset($options['accelerate']) ? (bool) $options['accelerate'] : \false;
67	$this->region = (string) $region;
68	$this->endpoint = isset($options['endpoint']) ? $options['endpoint'] : "";
69	$this->endpointProvider = \is_null($endpointProvider) ? PartitionEndpointProvider::defaultProvider() : $endpointProvider;
70	$this->nextHandler = $nextHandler;
71	}
72	public function __invoke(CommandInterface $command, RequestInterface $request)
73	{
74	if (!empty($this->endpoint)) {
75	$request = $this->applyEndpoint($command, $request);
76	} else {
77	switch ($this->endpointPatternDecider($command, $request)) {
78	case self::HOST_STYLE:
79	$request = $this->applyHostStyleEndpoint($command, $request);
80	break;
81	case self::NO_PATTERN:
82	break;
83	case self::PATH_STYLE:
84	$request = $this->applyPathStyleEndpointCustomizations($command, $request);
85	break;
86	case self::DUALSTACK:
87	$request = $this->applyDualStackEndpoint($command, $request);
88	break;
89	case self::ACCELERATE:
90	$request = $this->applyAccelerateEndpoint($command, $request, 's3-accelerate');
91	break;
92	case self::ACCELERATE_DUALSTACK:
93	$request = $this->applyAccelerateEndpoint($command, $request, 's3-accelerate.dualstack');
94	break;
95	}
96	}
97	$nextHandler = $this->nextHandler;
98	return $nextHandler($command, $request);
99	}
100	private static function isRequestHostStyleCompatible(CommandInterface $command, RequestInterface $request)
101	{
102	return S3Client::isBucketDnsCompatible($command['Bucket']) && ($request->getUri()->getScheme() === 'http' \|\| \strpos($command['Bucket'], '.') === \false) && \filter_var($request->getUri()->getHost(), \FILTER_VALIDATE_IP) === \false;
103	}
104	private function endpointPatternDecider(CommandInterface $command, RequestInterface $request)
105	{
106	$accelerate = isset($command['@use_accelerate_endpoint']) ? $command['@use_accelerate_endpoint'] : $this->accelerateByDefault;
107	$dualStack = isset($command['@use_dual_stack_endpoint']) ? $command['@use_dual_stack_endpoint'] : $this->dualStackByDefault;
108	$pathStyle = isset($command['@use_path_style_endpoint']) ? $command['@use_path_style_endpoint'] : $this->pathStyleByDefault;
109	if ($accelerate && $dualStack) {
110	// When try to enable both for operations excluded from s3-accelerate,
111	// only dualstack endpoints will be enabled.
112	return $this->canAccelerate($command) ? self::ACCELERATE_DUALSTACK : self::DUALSTACK;
113	}
114	if ($accelerate && $this->canAccelerate($command)) {
115	return self::ACCELERATE;
116	}
117	if ($dualStack) {
118	return self::DUALSTACK;
119	}
120	if (!$pathStyle && self::isRequestHostStyleCompatible($command, $request)) {
121	return self::HOST_STYLE;
122	}
123	return self::PATH_STYLE;
124	}
125	private function canAccelerate(CommandInterface $command)
126	{
127	return empty(self::$exclusions[$command->getName()]) && S3Client::isBucketDnsCompatible($command['Bucket']);
128	}
129	private function getBucketStyleHost(CommandInterface $command, $host)
130	{
131	// For operations on the base host (e.g. ListBuckets)
132	if (!isset($command['Bucket'])) {
133	return $host;
134	}
135	return "{$command['Bucket']}.{$host}";
136	}
137	private function applyHostStyleEndpoint(CommandInterface $command, RequestInterface $request)
138	{
139	$uri = $request->getUri();
140	$request = $request->withUri($uri->withHost($this->getBucketStyleHost($command, $uri->getHost()))->withPath($this->getBucketlessPath($uri->getPath(), $command)));
141	return $request;
142	}
143	private function applyPathStyleEndpointCustomizations(CommandInterface $command, RequestInterface $request)
144	{
145	if ($command->getName() == 'WriteGetObjectResponse') {
146	$dnsSuffix = $this->endpointProvider->getPartition($this->region, 's3')->getDnsSuffix();
147	$fips = \Dudlewebs\WPMCS\s3\Aws\is_fips_pseudo_region($this->region) ? "-fips" : "";
148	$region = \Dudlewebs\WPMCS\s3\Aws\strip_fips_pseudo_regions($this->region);
149	$host = "{$command['RequestRoute']}.s3-object-lambda{$fips}.{$region}.{$dnsSuffix}";
150	$uri = $request->getUri();
151	$request = $request->withUri($uri->withHost($host)->withPath($this->getBucketlessPath($uri->getPath(), $command)));
152	}
153	return $request;
154	}
155	private function applyDualStackEndpoint(CommandInterface $command, RequestInterface $request)
156	{
157	$request = $request->withUri($request->getUri()->withHost($this->getDualStackHost()));
158	if (empty($command['@use_path_style_endpoint']) && !$this->pathStyleByDefault && self::isRequestHostStyleCompatible($command, $request)) {
159	$request = $this->applyHostStyleEndpoint($command, $request);
160	}
161	return $request;
162	}
163	private function getDualStackHost()
164	{
165	$dnsSuffix = $this->endpointProvider->getPartition($this->region, 's3')->getDnsSuffix();
166	return "s3.dualstack.{$this->region}.{$dnsSuffix}";
167	}
168	private function applyAccelerateEndpoint(CommandInterface $command, RequestInterface $request, $pattern)
169	{
170	$request = $request->withUri($request->getUri()->withHost($this->getAccelerateHost($command, $pattern))->withPath($this->getBucketlessPath($request->getUri()->getPath(), $command)));
171	return $request;
172	}
173	private function getAccelerateHost(CommandInterface $command, $pattern)
174	{
175	$dnsSuffix = $this->endpointProvider->getPartition($this->region, 's3')->getDnsSuffix();
176	return "{$command['Bucket']}.{$pattern}.{$dnsSuffix}";
177	}
178	private function getBucketlessPath($path, CommandInterface $command)
179	{
180	$pattern = '/^\\/' . \preg_quote($command['Bucket'], '/') . '/';
181	$path = \preg_replace($pattern, '', $path) ?: '/';
182	if (\substr($path, 0, 1) !== '/') {
183	$path = '/' . $path;
184	}
185	return $path;
186	}
187	private function applyEndpoint(CommandInterface $command, RequestInterface $request)
188	{
189	$dualStack = isset($command['@use_dual_stack_endpoint']) ? $command['@use_dual_stack_endpoint'] : $this->dualStackByDefault;
190	if (ArnParser::isArn($command['Bucket'])) {
191	$arn = ArnParser::parse($command['Bucket']);
192	$outpost = $arn->getService() == 's3-outposts';
193	if ($outpost && $dualStack) {
194	throw new InvalidArgumentException("Outposts + dualstack is not supported");
195	}
196	if ($arn instanceof ObjectLambdaAccessPointArn) {
197	return $request;
198	}
199	}
200	if ($dualStack) {
201	throw new InvalidArgumentException("Custom Endpoint + Dualstack not supported");
202	}
203	if ($command->getName() == 'WriteGetObjectResponse') {
204	$host = "{$command['RequestRoute']}.{$this->endpoint}";
205	$uri = $request->getUri();
206	return $request = $request->withUri($uri->withHost($host)->withPath($this->getBucketlessPath($uri->getPath(), $command)));
207	}
208	$host = $this->pathStyleByDefault ? $this->endpoint : $this->getBucketStyleHost($command, $this->endpoint);
209	$uri = $request->getUri();
210	$scheme = $uri->getScheme();
211	if (empty($scheme)) {
212	$request = $request->withUri($uri->withHost($host));
213	} else {
214	$request = $request->withUri($uri);
215	}
216	return $request;
217	}
218	}
219