forked from ringcentral/psr7
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Message.php
246 lines (206 loc) · 8.1 KB
/
Message.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
use Psr\Http\Message\MessageInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
final class Message
{
/**
* Returns the string representation of an HTTP message.
*
* @param MessageInterface $message Message to convert to a string.
*/
public static function toString(MessageInterface $message): string
{
if ($message instanceof RequestInterface) {
$msg = trim($message->getMethod().' '
.$message->getRequestTarget())
.' HTTP/'.$message->getProtocolVersion();
if (!$message->hasHeader('host')) {
$msg .= "\r\nHost: ".$message->getUri()->getHost();
}
} elseif ($message instanceof ResponseInterface) {
$msg = 'HTTP/'.$message->getProtocolVersion().' '
.$message->getStatusCode().' '
.$message->getReasonPhrase();
} else {
throw new \InvalidArgumentException('Unknown message type');
}
foreach ($message->getHeaders() as $name => $values) {
if (strtolower($name) === 'set-cookie') {
foreach ($values as $value) {
$msg .= "\r\n{$name}: ".$value;
}
} else {
$msg .= "\r\n{$name}: ".implode(', ', $values);
}
}
return "{$msg}\r\n\r\n".$message->getBody();
}
/**
* Get a short summary of the message body.
*
* Will return `null` if the response is not printable.
*
* @param MessageInterface $message The message to get the body summary
* @param int $truncateAt The maximum allowed size of the summary
*/
public static function bodySummary(MessageInterface $message, int $truncateAt = 120): ?string
{
$body = $message->getBody();
if (!$body->isSeekable() || !$body->isReadable()) {
return null;
}
$size = $body->getSize();
if ($size === 0) {
return null;
}
$body->rewind();
$summary = $body->read($truncateAt);
$body->rewind();
if ($size > $truncateAt) {
$summary .= ' (truncated...)';
}
// Matches any printable character, including unicode characters:
// letters, marks, numbers, punctuation, spacing, and separators.
if (preg_match('/[^\pL\pM\pN\pP\pS\pZ\n\r\t]/u', $summary) !== 0) {
return null;
}
return $summary;
}
/**
* Attempts to rewind a message body and throws an exception on failure.
*
* The body of the message will only be rewound if a call to `tell()`
* returns a value other than `0`.
*
* @param MessageInterface $message Message to rewind
*
* @throws \RuntimeException
*/
public static function rewindBody(MessageInterface $message): void
{
$body = $message->getBody();
if ($body->tell()) {
$body->rewind();
}
}
/**
* Parses an HTTP message into an associative array.
*
* The array contains the "start-line" key containing the start line of
* the message, "headers" key containing an associative array of header
* array values, and a "body" key containing the body of the message.
*
* @param string $message HTTP request or response to parse.
*/
public static function parseMessage(string $message): array
{
if (!$message) {
throw new \InvalidArgumentException('Invalid message');
}
$message = ltrim($message, "\r\n");
$messageParts = preg_split("/\r?\n\r?\n/", $message, 2);
if ($messageParts === false || count($messageParts) !== 2) {
throw new \InvalidArgumentException('Invalid message: Missing header delimiter');
}
[$rawHeaders, $body] = $messageParts;
$rawHeaders .= "\r\n"; // Put back the delimiter we split previously
$headerParts = preg_split("/\r?\n/", $rawHeaders, 2);
if ($headerParts === false || count($headerParts) !== 2) {
throw new \InvalidArgumentException('Invalid message: Missing status line');
}
[$startLine, $rawHeaders] = $headerParts;
if (preg_match("/(?:^HTTP\/|^[A-Z]+ \S+ HTTP\/)(\d+(?:\.\d+)?)/i", $startLine, $matches) && $matches[1] === '1.0') {
// Header folding is deprecated for HTTP/1.1, but allowed in HTTP/1.0
$rawHeaders = preg_replace(Rfc7230::HEADER_FOLD_REGEX, ' ', $rawHeaders);
}
/** @var array[] $headerLines */
$count = preg_match_all(Rfc7230::HEADER_REGEX, $rawHeaders, $headerLines, PREG_SET_ORDER);
// If these aren't the same, then one line didn't match and there's an invalid header.
if ($count !== substr_count($rawHeaders, "\n")) {
// Folding is deprecated, see https://tools.ietf.org/html/rfc7230#section-3.2.4
if (preg_match(Rfc7230::HEADER_FOLD_REGEX, $rawHeaders)) {
throw new \InvalidArgumentException('Invalid header syntax: Obsolete line folding');
}
throw new \InvalidArgumentException('Invalid header syntax');
}
$headers = [];
foreach ($headerLines as $headerLine) {
$headers[$headerLine[1]][] = $headerLine[2];
}
return [
'start-line' => $startLine,
'headers' => $headers,
'body' => $body,
];
}
/**
* Constructs a URI for an HTTP request message.
*
* @param string $path Path from the start-line
* @param array $headers Array of headers (each value an array).
*/
public static function parseRequestUri(string $path, array $headers): string
{
$hostKey = array_filter(array_keys($headers), function ($k) {
// Numeric array keys are converted to int by PHP.
$k = (string) $k;
return strtolower($k) === 'host';
});
// If no host is found, then a full URI cannot be constructed.
if (!$hostKey) {
return $path;
}
$host = $headers[reset($hostKey)][0];
$scheme = substr($host, -4) === ':443' ? 'https' : 'http';
return $scheme.'://'.$host.'/'.ltrim($path, '/');
}
/**
* Parses a request message string into a request object.
*
* @param string $message Request message string.
*/
public static function parseRequest(string $message): RequestInterface
{
$data = self::parseMessage($message);
$matches = [];
if (!preg_match('/^[\S]+\s+([a-zA-Z]+:\/\/|\/).*/', $data['start-line'], $matches)) {
throw new \InvalidArgumentException('Invalid request string');
}
$parts = explode(' ', $data['start-line'], 3);
$version = isset($parts[2]) ? explode('/', $parts[2])[1] : '1.1';
$request = new Request(
$parts[0],
$matches[1] === '/' ? self::parseRequestUri($parts[1], $data['headers']) : $parts[1],
$data['headers'],
$data['body'],
$version
);
return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]);
}
/**
* Parses a response message string into a response object.
*
* @param string $message Response message string.
*/
public static function parseResponse(string $message): ResponseInterface
{
$data = self::parseMessage($message);
// According to https://tools.ietf.org/html/rfc7230#section-3.1.2 the space
// between status-code and reason-phrase is required. But browsers accept
// responses without space and reason as well.
if (!preg_match('/^HTTP\/.* [0-9]{3}( .*|$)/', $data['start-line'])) {
throw new \InvalidArgumentException('Invalid response string: '.$data['start-line']);
}
$parts = explode(' ', $data['start-line'], 3);
return new Response(
(int) $parts[1],
$data['headers'],
$data['body'],
explode('/', $parts[0])[1],
$parts[2] ?? null
);
}
}