media-cloud-sync / includes / sdk / s3 / GuzzleHttp / Psr7 / MultipartStream.php

MultipartStream.php in Media Cloud Sync 1.3.11, at includes/sdk/s3/GuzzleHttp/Psr7/MultipartStream.php

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1	<?php
2
3	declare (strict_types=1);
4	namespace Dudlewebs\WPMCS\s3\GuzzleHttp\Psr7;
5
6	use Dudlewebs\WPMCS\s3\Psr\Http\Message\StreamInterface;
7	/**
8	* Stream that when read returns bytes for a streaming multipart or
9	* multipart/form-data stream.
10	*/
11	final class MultipartStream implements StreamInterface
12	{
13	use StreamDecoratorTrait;
14	/** @var string */
15	private $boundary;
16	/** @var StreamInterface */
17	private $stream;
18	/**
19	* @param array $elements Array of associative arrays, each containing a
20	* required "name" key mapping to the form field,
21	* name, a required "contents" key mapping to a
22	* StreamInterface/resource/string, an optional
23	* "headers" associative array of custom headers,
24	* and an optional "filename" key mapping to a
25	* string to send as the filename in the part.
26	* @param string $boundary You can optionally provide a specific boundary
27	*
28	* @throws \InvalidArgumentException
29	*/
30	public function __construct(array $elements = [], ?string $boundary = null)
31	{
32	$this->boundary = $boundary ?: \bin2hex(\random_bytes(20));
33	$this->stream = $this->createStream($elements);
34	}
35	public function getBoundary() : string
36	{
37	return $this->boundary;
38	}
39	public function isWritable() : bool
40	{
41	return \false;
42	}
43	/**
44	* Get the headers needed before transferring the content of a POST file
45	*
46	* @param string[] $headers
47	*/
48	private function getHeaders(array $headers) : string
49	{
50	$str = '';
51	foreach ($headers as $key => $value) {
52	$str .= "{$key}: {$value}\r\n";
53	}
54	return "--{$this->boundary}\r\n" . \trim($str) . "\r\n\r\n";
55	}
56	/**
57	* Create the aggregate stream that will be used to upload the POST data
58	*/
59	protected function createStream(array $elements = []) : StreamInterface
60	{
61	$stream = new AppendStream();
62	foreach ($elements as $element) {
63	if (!\is_array($element)) {
64	throw new \UnexpectedValueException('An array is expected');
65	}
66	$this->addElement($stream, $element);
67	}
68	// Add the trailing boundary with CRLF
69	$stream->addStream(Utils::streamFor("--{$this->boundary}--\r\n"));
70	return $stream;
71	}
72	private function addElement(AppendStream $stream, array $element) : void
73	{
74	foreach (['contents', 'name'] as $key) {
75	if (!\array_key_exists($key, $element)) {
76	throw new \InvalidArgumentException("A '{$key}' key is required");
77	}
78	}
79	$element['contents'] = Utils::streamFor($element['contents']);
80	if (empty($element['filename'])) {
81	$uri = $element['contents']->getMetadata('uri');
82	if ($uri && \is_string($uri) && \substr($uri, 0, 6) !== 'php://' && \substr($uri, 0, 7) !== 'data://') {
83	$element['filename'] = $uri;
84	}
85	}
86	[$body, $headers] = $this->createElement($element['name'], $element['contents'], $element['filename'] ?? null, $element['headers'] ?? []);
87	$stream->addStream(Utils::streamFor($this->getHeaders($headers)));
88	$stream->addStream($body);
89	$stream->addStream(Utils::streamFor("\r\n"));
90	}
91	/**
92	* @param string[] $headers
93	*
94	* @return array{0: StreamInterface, 1: string[]}
95	*/
96	private function createElement(string $name, StreamInterface $stream, ?string $filename, array $headers) : array
97	{
98	// Set a default content-disposition header if one was no provided
99	$disposition = self::getHeader($headers, 'content-disposition');
100	if (!$disposition) {
101	$headers['Content-Disposition'] = $filename === '0' \|\| $filename ? \sprintf('form-data; name="%s"; filename="%s"', $name, \basename($filename)) : "form-data; name=\"{$name}\"";
102	}
103	// Set a default content-length header if one was no provided
104	$length = self::getHeader($headers, 'content-length');
105	if (!$length) {
106	if ($length = $stream->getSize()) {
107	$headers['Content-Length'] = (string) $length;
108	}
109	}
110	// Set a default Content-Type if one was not supplied
111	$type = self::getHeader($headers, 'content-type');
112	if (!$type && ($filename === '0' \|\| $filename)) {
113	$headers['Content-Type'] = MimeType::fromFilename($filename) ?? 'application/octet-stream';
114	}
115	return [$stream, $headers];
116	}
117	/**
118	* @param string[] $headers
119	*/
120	private static function getHeader(array $headers, string $key) : ?string
121	{
122	$lowercaseHeader = \strtolower($key);
123	foreach ($headers as $k => $v) {
124	if (\strtolower((string) $k) === $lowercaseHeader) {
125	return $v;
126	}
127	}
128	return null;
129	}
130	}
131