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
|
<?php
declare(strict_types=1);
namespace Sabre\HTTP;
use InvalidArgumentException;
/**
* PHP SAPI.
*
* This object is responsible for:
* 1. Constructing a Request object based on the current HTTP request sent to
* the PHP process.
* 2. Sending the Response object back to the client.
*
* It could be said that this class provides a mapping between the Request and
* Response objects, and php's:
*
* * $_SERVER
* * $_POST
* * $_FILES
* * php://input
* * echo()
* * header()
* * php://output
*
* You can choose to either call all these methods statically, but you can also
* instantiate this as an object to allow for polymorhpism.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Sapi
{
/**
* This static method will create a new Request object, based on the
* current PHP request.
*/
public static function getRequest(): Request
{
$serverArr = $_SERVER;
if ('cli' === PHP_SAPI) {
// If we're running off the CLI, we're going to set some default
// settings.
$serverArr['REQUEST_URI'] = $_SERVER['REQUEST_URI'] ?? '/';
$serverArr['REQUEST_METHOD'] = $_SERVER['REQUEST_METHOD'] ?? 'CLI';
}
$r = self::createFromServerArray($serverArr);
$r->setBody(fopen('php://input', 'r'));
$r->setPostData($_POST);
return $r;
}
/**
* Sends the HTTP response back to a HTTP client.
*
* This calls php's header() function and streams the body to php://output.
*/
public static function sendResponse(ResponseInterface $response)
{
header('HTTP/'.$response->getHttpVersion().' '.$response->getStatus().' '.$response->getStatusText());
foreach ($response->getHeaders() as $key => $value) {
foreach ($value as $k => $v) {
if (0 === $k) {
header($key.': '.$v);
} else {
header($key.': '.$v, false);
}
}
}
$body = $response->getBody();
if (null === $body) {
return;
}
if (is_callable($body)) {
$body();
return;
}
$contentLength = $response->getHeader('Content-Length');
if (null !== $contentLength) {
$output = fopen('php://output', 'wb');
if (is_resource($body) && 'stream' == get_resource_type($body)) {
if (PHP_INT_SIZE > 4) {
// use the dedicated function on 64 Bit systems
// a workaround to make PHP more possible to use mmap based copy, see https://github.com/sabre-io/http/pull/119
$left = (int) $contentLength;
// copy with 4MiB chunks
$chunk_size = 4 * 1024 * 1024;
stream_set_chunk_size($output, $chunk_size);
// If this is a partial response, flush the beginning bytes until the first position that is a multiple of the page size.
$contentRange = $response->getHeader('Content-Range');
// Matching "Content-Range: bytes 1234-5678/7890"
if (null !== $contentRange && preg_match('/^bytes\s([0-9]+)-([0-9]+)\//i', $contentRange, $matches)) {
// 4kB should be the default page size on most architectures
$pageSize = 4096;
$offset = (int) $matches[1];
$delta = ($offset % $pageSize) > 0 ? ($pageSize - $offset % $pageSize) : 0;
if ($delta > 0) {
$left -= stream_copy_to_stream($body, $output, min($delta, $left));
}
}
while ($left > 0) {
$copied = stream_copy_to_stream($body, $output, min($left, $chunk_size));
// stream_copy_to_stream($src, $dest, $maxLength) must return the number of bytes copied or false in case of failure
// But when the $maxLength is greater than the total number of bytes remaining in the stream,
// It returns the negative number of bytes copied
// So break the loop in such cases.
if ($copied <= 0) {
break;
}
$left -= $copied;
}
} else {
// workaround for 32 Bit systems to avoid stream_copy_to_stream
while (!feof($body)) {
fwrite($output, fread($body, 8192));
}
}
} else {
fwrite($output, $body, (int) $contentLength);
}
} else {
file_put_contents('php://output', $body);
}
if (is_resource($body)) {
fclose($body);
}
}
/**
* This static method will create a new Request object, based on a PHP
* $_SERVER array.
*
* REQUEST_URI and REQUEST_METHOD are required.
*/
public static function createFromServerArray(array $serverArray): Request
{
$headers = [];
$method = null;
$url = null;
$httpVersion = '1.1';
$protocol = 'http';
$hostName = 'localhost';
foreach ($serverArray as $key => $value) {
$key = (string) $key;
switch ($key) {
case 'SERVER_PROTOCOL':
if ('HTTP/1.0' === $value) {
$httpVersion = '1.0';
} elseif ('HTTP/2.0' === $value) {
$httpVersion = '2.0';
}
break;
case 'REQUEST_METHOD':
$method = $value;
break;
case 'REQUEST_URI':
$url = $value;
break;
// These sometimes show up without a HTTP_ prefix
case 'CONTENT_TYPE':
$headers['Content-Type'] = $value;
break;
case 'CONTENT_LENGTH':
$headers['Content-Length'] = $value;
break;
// mod_php on apache will put credentials in these variables.
// (fast)cgi does not usually do this, however.
case 'PHP_AUTH_USER':
if (isset($serverArray['PHP_AUTH_PW'])) {
$headers['Authorization'] = 'Basic '.base64_encode($value.':'.$serverArray['PHP_AUTH_PW']);
}
break;
// Similarly, mod_php may also screw around with digest auth.
case 'PHP_AUTH_DIGEST':
$headers['Authorization'] = 'Digest '.$value;
break;
// Apache may prefix the HTTP_AUTHORIZATION header with
// REDIRECT_, if mod_rewrite was used.
case 'REDIRECT_HTTP_AUTHORIZATION':
$headers['Authorization'] = $value;
break;
case 'HTTP_HOST':
$hostName = $value;
$headers['Host'] = $value;
break;
case 'HTTPS':
if (!empty($value) && 'off' !== $value) {
$protocol = 'https';
}
break;
default:
if ('HTTP_' === substr($key, 0, 5)) {
// It's a HTTP header
// Normalizing it to be prettier
$header = strtolower(substr($key, 5));
// Transforming dashes into spaces, and uppercasing
// every first letter.
$header = ucwords(str_replace('_', ' ', $header));
// Turning spaces into dashes.
$header = str_replace(' ', '-', $header);
$headers[$header] = $value;
}
break;
}
}
if (null === $url) {
throw new InvalidArgumentException('The _SERVER array must have a REQUEST_URI key');
}
if (null === $method) {
throw new InvalidArgumentException('The _SERVER array must have a REQUEST_METHOD key');
}
$r = new Request($method, $url, $headers);
$r->setHttpVersion($httpVersion);
$r->setRawServerData($serverArray);
$r->setAbsoluteUrl($protocol.'://'.$hostName.$url);
return $r;
}
}
|
