|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* webtrees: online genealogy |
|
5
|
|
|
* Copyright (C) 2019 webtrees development team |
|
6
|
|
|
* This program is free software: you can redistribute it and/or modify |
|
7
|
|
|
* it under the terms of the GNU General Public License as published by |
|
8
|
|
|
* the Free Software Foundation, either version 3 of the License, or |
|
9
|
|
|
* (at your option) any later version. |
|
10
|
|
|
* This program is distributed in the hope that it will be useful, |
|
11
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13
|
|
|
* GNU General Public License for more details. |
|
14
|
|
|
* You should have received a copy of the GNU General Public License |
|
15
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
16
|
|
|
*/ |
|
17
|
|
|
|
|
18
|
|
|
declare(strict_types=1); |
|
19
|
|
|
|
|
20
|
|
|
namespace Fisharebest\Webtrees\Http\Middleware; |
|
21
|
|
|
|
|
22
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
23
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
24
|
|
|
use Psr\Http\Server\MiddlewareInterface; |
|
25
|
|
|
use Psr\Http\Server\RequestHandlerInterface; |
|
26
|
|
|
use RuntimeException; |
|
27
|
|
|
|
|
28
|
|
|
use function connection_status; |
|
29
|
|
|
use function fastcgi_finish_request; |
|
30
|
|
|
use function function_exists; |
|
31
|
|
|
use function header; |
|
32
|
|
|
use function header_remove; |
|
33
|
|
|
use function headers_sent; |
|
34
|
|
|
use function http_response_code; |
|
35
|
|
|
use function ob_get_length; |
|
36
|
|
|
use function ob_get_level; |
|
37
|
|
|
use function sprintf; |
|
38
|
|
|
|
|
39
|
|
|
use const CONNECTION_NORMAL; |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* Middleware to emit the response - send it back to the webserver. |
|
43
|
|
|
*/ |
|
44
|
|
|
class EmitResponse implements MiddlewareInterface |
|
45
|
|
|
{ |
|
46
|
|
|
// Stream the output in chunks. |
|
47
|
|
|
private const CHUNK_SIZE = 65536; |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @param ServerRequestInterface $request |
|
51
|
|
|
* @param RequestHandlerInterface $handler |
|
52
|
|
|
* |
|
53
|
|
|
* @return ResponseInterface |
|
54
|
|
|
*/ |
|
55
|
|
|
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
|
56
|
|
|
{ |
|
57
|
|
|
$response = $handler->handle($request); |
|
58
|
|
|
|
|
59
|
|
|
$this->removeDefaultPhpHeaders(); |
|
60
|
|
|
$this->assertHeadersNotEmitted(); |
|
61
|
|
|
$this->assertBodyNotEmitted(); |
|
62
|
|
|
$this->emitStatusLine($response); |
|
63
|
|
|
$this->emitHeaders($response); |
|
64
|
|
|
$this->emitBody($response); |
|
65
|
|
|
$this->closeConnection(); |
|
66
|
|
|
|
|
67
|
|
|
return $response; |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Remove the default PHP header. |
|
72
|
|
|
* |
|
73
|
|
|
* @return void |
|
74
|
|
|
*/ |
|
75
|
|
|
private function removeDefaultPhpHeaders(): void |
|
76
|
|
|
{ |
|
77
|
|
|
header_remove('X-Powered-By'); |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
/** |
|
81
|
|
|
* @return void |
|
82
|
|
|
* @throws RuntimeException |
|
83
|
|
|
*/ |
|
84
|
|
|
private function assertHeadersNotEmitted(): void |
|
85
|
|
|
{ |
|
86
|
|
|
if (headers_sent($file, $line)) { |
|
87
|
|
|
$message = sprintf('Headers already sent at %s:%d', $file, $line); |
|
88
|
|
|
|
|
89
|
|
|
throw new RuntimeException($message); |
|
90
|
|
|
} |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
/** |
|
94
|
|
|
* @return void |
|
95
|
|
|
* @throws RuntimeException |
|
96
|
|
|
*/ |
|
97
|
|
|
private function assertBodyNotEmitted(): void |
|
98
|
|
|
{ |
|
99
|
|
|
if (ob_get_level() > 0 && ob_get_length() > 0) { |
|
100
|
|
|
// The output probably contains an error message. |
|
101
|
|
|
$output = ob_get_clean(); |
|
102
|
|
|
|
|
103
|
|
|
throw new RuntimeException('Output already started: ' . $output); |
|
104
|
|
|
} |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
/** |
|
108
|
|
|
* @param ResponseInterface $response |
|
109
|
|
|
*/ |
|
110
|
|
|
private function emitStatusLine(ResponseInterface $response): void |
|
111
|
|
|
{ |
|
112
|
|
|
http_response_code($response->getStatusCode()); |
|
113
|
|
|
|
|
114
|
|
|
header(sprintf( |
|
115
|
|
|
'HTTP/%s %d %s', |
|
116
|
|
|
$response->getProtocolVersion(), |
|
117
|
|
|
$response->getStatusCode(), |
|
118
|
|
|
$response->getReasonPhrase() |
|
119
|
|
|
)); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* @param ResponseInterface $response |
|
124
|
|
|
*/ |
|
125
|
|
|
private function emitHeaders(ResponseInterface $response): void |
|
126
|
|
|
{ |
|
127
|
|
|
foreach ($response->getHeaders() as $name => $values) { |
|
128
|
|
|
foreach ($values as $value) { |
|
129
|
|
|
header( |
|
130
|
|
|
sprintf('%s: %s', $name, $value), |
|
131
|
|
|
false, |
|
132
|
|
|
$response->getStatusCode() |
|
133
|
|
|
); |
|
134
|
|
|
} |
|
135
|
|
|
} |
|
136
|
|
|
} |
|
137
|
|
|
|
|
138
|
|
|
/** |
|
139
|
|
|
* @param ResponseInterface $response |
|
140
|
|
|
* |
|
141
|
|
|
* @return void |
|
142
|
|
|
*/ |
|
143
|
|
|
private function emitBody(ResponseInterface $response): void |
|
144
|
|
|
{ |
|
145
|
|
|
$body = $response->getBody(); |
|
146
|
|
|
|
|
147
|
|
|
if ($body->isSeekable()) { |
|
148
|
|
|
$body->rewind(); |
|
149
|
|
|
} |
|
150
|
|
|
|
|
151
|
|
|
while (!$body->eof() && connection_status() === CONNECTION_NORMAL) { |
|
152
|
|
|
echo $body->read(self::CHUNK_SIZE); |
|
153
|
|
|
} |
|
154
|
|
|
} |
|
155
|
|
|
|
|
156
|
|
|
/** |
|
157
|
|
|
* @return void |
|
158
|
|
|
*/ |
|
159
|
|
|
private function closeConnection(): void |
|
160
|
|
|
{ |
|
161
|
|
|
if (function_exists('fastcgi_finish_request')) { |
|
162
|
|
|
fastcgi_finish_request(); |
|
163
|
|
|
} |
|
164
|
|
|
} |
|
165
|
|
|
} |
|
166
|
|
|
|
fisharebest /
webtrees
