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
|
<?php
namespace Aws\S3;
use Aws\CommandInterface;
use Psr\Http\Message\RequestInterface;
/**
* Used to update the host used for S3 requests in the case of using a
* "bucket endpoint" or CNAME bucket.
*
* IMPORTANT: this middleware must be added after the "build" step.
*
* @internal
*/
class BucketEndpointMiddleware
{
private static $exclusions = ['GetBucketLocation' => true];
private $nextHandler;
/**
* Create a middleware wrapper function.
*
* @return callable
*/
public static function wrap()
{
return function (callable $handler) {
return new self($handler);
};
}
public function __construct(callable $nextHandler)
{
$this->nextHandler = $nextHandler;
}
public function __invoke(CommandInterface $command, RequestInterface $request)
{
$nextHandler = $this->nextHandler;
$bucket = $command['Bucket'];
if ($bucket && !isset(self::$exclusions[$command->getName()])) {
$request = $this->modifyRequest($request, $command);
}
return $nextHandler($command, $request);
}
private function removeBucketFromPath($path, $bucket)
{
$len = strlen($bucket) + 1;
if (substr($path, 0, $len) === "/{$bucket}") {
$path = substr($path, $len);
}
return $path ?: '/';
}
private function removeDuplicateBucketFromHost($host, $bucket)
{
if (substr_count($host, $bucket) > 1) {
while (strpos($host, "{$bucket}.{$bucket}") === 0) {
$hostArr = explode('.', $host);
array_shift($hostArr);
$host = implode('.', $hostArr);
}
}
return $host;
}
private function modifyRequest(
RequestInterface $request,
CommandInterface $command
) {
$uri = $request->getUri();
$path = $uri->getPath();
$host = $uri->getHost();
$bucket = $command['Bucket'];
$path = $this->removeBucketFromPath($path, $bucket);
$host = $this->removeDuplicateBucketFromHost($host, $bucket);
// Modify the Key to make sure the key is encoded, but slashes are not.
if ($command['Key']) {
$path = S3Client::encodeKey(rawurldecode($path));
}
return $request->withUri(
$uri->withHost($host)
->withPath($path)
);
}
}
|
