depicter / modules / GuzzleHttp / Psr7 / Message.php

Message.php in Depicter — Popup & Slider Builder trunk, at modules/GuzzleHttp/Psr7/Message.php

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1	<?php
2
3	declare(strict_types=1);
4
5	namespace Depicter\GuzzleHttp\Psr7;
6
7	use Depicter\Psr\Http\Message\MessageInterface;
8	use Depicter\Psr\Http\Message\RequestInterface;
9	use Depicter\Psr\Http\Message\ResponseInterface;
10
11	final class Message
12	{
13	/**
14	* Returns the string representation of an HTTP message.
15	*
16	* @param MessageInterface $message Message to convert to a string.
17	*/
18	public static function toString(MessageInterface $message): string
19	{
20	if ($message instanceof RequestInterface) {
21	$msg = trim($message->getMethod().' '
22	.$message->getRequestTarget())
23	.' HTTP/'.$message->getProtocolVersion();
24	if (!$message->hasHeader('host')) {
25	$msg .= "\r\nHost: ".$message->getUri()->getHost();
26	}
27	} elseif ($message instanceof ResponseInterface) {
28	$msg = 'HTTP/'.$message->getProtocolVersion().' '
29	.$message->getStatusCode().' '
30	.$message->getReasonPhrase();
31	} else {
32	throw new \InvalidArgumentException('Unknown message type');
33	}
34
35	foreach ($message->getHeaders() as $name => $values) {
36	if (is_string($name) && strtolower($name) === 'set-cookie') {
37	foreach ($values as $value) {
38	$msg .= "\r\n{$name}: ".$value;
39	}
40	} else {
41	$msg .= "\r\n{$name}: ".implode(', ', $values);
42	}
43	}
44
45	return "{$msg}\r\n\r\n".$message->getBody();
46	}
47
48	/**
49	* Get a short summary of the message body.
50	*
51	* Will return `null` if the response is not printable.
52	*
53	* @param MessageInterface $message The message to get the body summary
54	* @param int $truncateAt The maximum allowed size of the summary
55	*/
56	public static function bodySummary(MessageInterface $message, int $truncateAt = 120): ?string
57	{
58	$body = $message->getBody();
59
60	if (!$body->isSeekable() \|\| !$body->isReadable()) {
61	return null;
62	}
63
64	$size = $body->getSize();
65
66	if ($size === 0) {
67	return null;
68	}
69
70	$body->rewind();
71	$summary = $body->read($truncateAt);
72	$body->rewind();
73
74	if ($size > $truncateAt) {
75	$summary .= ' (truncated...)';
76	}
77
78	// Matches any printable character, including unicode characters:
79	// letters, marks, numbers, punctuation, spacing, and separators.
80	if (preg_match('/[^\pL\pM\pN\pP\pS\pZ\n\r\t]/u', $summary) !== 0) {
81	return null;
82	}
83
84	return $summary;
85	}
86
87	/**
88	* Attempts to rewind a message body and throws an exception on failure.
89	*
90	* The body of the message will only be rewound if a call to `tell()`
91	* returns a value other than `0`.
92	*
93	* @param MessageInterface $message Message to rewind
94	*
95	* @throws \RuntimeException
96	*/
97	public static function rewindBody(MessageInterface $message): void
98	{
99	$body = $message->getBody();
100
101	if ($body->tell()) {
102	$body->rewind();
103	}
104	}
105
106	/**
107	* Parses an HTTP message into an associative array.
108	*
109	* The array contains the "start-line" key containing the start line of
110	* the message, "headers" key containing an associative array of header
111	* array values, and a "body" key containing the body of the message.
112	*
113	* @param string $message HTTP request or response to parse.
114	*/
115	public static function parseMessage(string $message): array
116	{
117	if (!$message) {
118	throw new \InvalidArgumentException('Invalid message');
119	}
120
121	$message = ltrim($message, "\r\n");
122
123	$messageParts = preg_split("/\r?\n\r?\n/", $message, 2);
124
125	if ($messageParts === false \|\| count($messageParts) !== 2) {
126	throw new \InvalidArgumentException('Invalid message: Missing header delimiter');
127	}
128
129	[$rawHeaders, $body] = $messageParts;
130	$rawHeaders .= "\r\n"; // Put back the delimiter we split previously
131	$headerParts = preg_split("/\r?\n/", $rawHeaders, 2);
132
133	if ($headerParts === false \|\| count($headerParts) !== 2) {
134	throw new \InvalidArgumentException('Invalid message: Missing status line');
135	}
136
137	[$startLine, $rawHeaders] = $headerParts;
138
139	if (preg_match("/(?:^HTTP\/\|^[A-Z]+ \S+ HTTP\/)(\d+(?:\.\d+)?)/i", $startLine, $matches) && $matches[1] === '1.0') {
140	// Header folding is deprecated for HTTP/1.1, but allowed in HTTP/1.0
141	$rawHeaders = preg_replace(Rfc7230::HEADER_FOLD_REGEX, ' ', $rawHeaders);
142	}
143
144	/** @var array[] $headerLines */
145	$count = preg_match_all(Rfc7230::HEADER_REGEX, $rawHeaders, $headerLines, PREG_SET_ORDER);
146
147	// If these aren't the same, then one line didn't match and there's an invalid header.
148	if ($count !== substr_count($rawHeaders, "\n")) {
149	// Folding is deprecated, see https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.4
150	if (preg_match(Rfc7230::HEADER_FOLD_REGEX, $rawHeaders)) {
151	throw new \InvalidArgumentException('Invalid header syntax: Obsolete line folding');
152	}
153
154	throw new \InvalidArgumentException('Invalid header syntax');
155	}
156
157	$headers = [];
158
159	foreach ($headerLines as $headerLine) {
160	$headers[$headerLine[1]][] = $headerLine[2];
161	}
162
163	return [
164	'start-line' => $startLine,
165	'headers' => $headers,
166	'body' => $body,
167	];
168	}
169
170	/**
171	* Constructs a URI for an HTTP request message.
172	*
173	* @param string $path Path from the start-line
174	* @param array $headers Array of headers (each value an array).
175	*/
176	public static function parseRequestUri(string $path, array $headers): string
177	{
178	$hostKey = array_filter(array_keys($headers), function ($k) {
179	// Numeric array keys are converted to int by PHP.
180	$k = (string) $k;
181
182	return strtolower($k) === 'host';
183	});
184
185	// If no host is found, then a full URI cannot be constructed.
186	if (!$hostKey) {
187	return $path;
188	}
189
190	$host = $headers[reset($hostKey)][0];
191	$scheme = substr($host, -4) === ':443' ? 'https' : 'http';
192
193	return $scheme.'://'.$host.'/'.ltrim($path, '/');
194	}
195
196	/**
197	* Parses a request message string into a request object.
198	*
199	* @param string $message Request message string.
200	*/
201	public static function parseRequest(string $message): RequestInterface
202	{
203	$data = self::parseMessage($message);
204	$matches = [];
205	if (!preg_match('/^[\S]+\s+([a-zA-Z]+:\/\/\|\/).*/', $data['start-line'], $matches)) {
206	throw new \InvalidArgumentException('Invalid request string');
207	}
208	$parts = explode(' ', $data['start-line'], 3);
209	$version = isset($parts[2]) ? explode('/', $parts[2])[1] : '1.1';
210
211	$request = new Request(
212	$parts[0],
213	$matches[1] === '/' ? self::parseRequestUri($parts[1], $data['headers']) : $parts[1],
214	$data['headers'],
215	$data['body'],
216	$version
217	);
218
219	return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]);
220	}
221
222	/**
223	* Parses a response message string into a response object.
224	*
225	* @param string $message Response message string.
226	*/
227	public static function parseResponse(string $message): ResponseInterface
228	{
229	$data = self::parseMessage($message);
230	// According to https://datatracker.ietf.org/doc/html/rfc7230#section-3.1.2
231	// the space between status-code and reason-phrase is required. But
232	// browsers accept responses without space and reason as well.
233	if (!preg_match('/^HTTP\/.* [0-9]{3}( .*\|$)/', $data['start-line'])) {
234	throw new \InvalidArgumentException('Invalid response string: '.$data['start-line']);
235	}
236	$parts = explode(' ', $data['start-line'], 3);
237
238	return new Response(
239	(int) $parts[1],
240	$data['headers'],
241	$data['body'],
242	explode('/', $parts[0])[1],
243	$parts[2] ?? null
244	);
245	}
246	}
247