Newer
Older
<?php
namespace JsonApi\Routes\Files;
use JsonApi\Errors\AuthorizationFailedException;
use JsonApi\Errors\InternalServerError;
use JsonApi\Errors\RecordNotFoundException;
use JsonApi\NonJsonApiController;
use GuzzleHttp\Psr7;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
class FileRefsContentShow extends NonJsonApiController
{
use EtagHelperTrait;
public function invoke(Request $request, Response $response, array $args): Response
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
{
if (!$fileRef = \FileRef::find($args['id'])) {
throw new RecordNotFoundException();
}
if (!Authority::canDownloadFileRef($this->getUser($request), $fileRef)) {
throw new AuthorizationFailedException();
}
return $this->sendFile($request, $response, $fileRef);
}
/**
* Copied and slightly edited for easy merging of future changes
* to sendfile.php.
*
* @SuppressWarnings(CyclomaticComplexity)
* @SuppressWarnings(NPathComplexity)
*/
private function sendFile(Request $request, Response $response, \FileRef $fileRef)
{
//replace bad charakters to avoid problems when saving the file
$fileName = \FileManager::cleanFileName($fileRef->name);
$filetype = $fileRef->getFileType();
$pathFile = $filetype->getPath() ?: $filetype->getDownloadURL();
$contentType = $fileRef->mime_type ?: get_mime_type($fileName);
// check if linked file is obtainable
if ('proxy' == $fileRef->file->metadata['access_type']) {
$linkData = \FileManager::fetchURLMetadata($fileRef->file->metadata['url']);
if (200 != $linkData['response_code']) {
throw new InternalServerError(
_('Diese Datei wird von einem externen Server geladen und ist dort momentan nicht erreichbar!')
);
}
$contentType = $linkData['Content-Type']
? strstr($linkData['Content-Type'], ';', true)
: get_mime_type($fileName);
$filesize = $linkData['Content-Length'] ?: false;
}
if ($filetype->getPath()) {
$filesize = @filesize($pathFile);
if (false === $filesize) {
throw new InternalServerError(
_('Fehler beim Laden der Inhalte der Datei')
);
}
list($done, $response) = $this->handleEtag($request, $response, $fileRef);
if ($done) {
return $response;
}
}
if ('redirect' == $fileRef->file->metadata['access_type']) {
return $response->withRedirect($fileRef->file->metadata['url']);
}
$contentBlacklisted = function ($mime) {
foreach (['html', 'javascript', 'svg', 'xml'] as $check) {
if (false !== stripos($mime, $check)) {
return true;
}
}
return false;
};
if ($contentBlacklisted($contentType)) {
$contentType = 'application/octet-stream';
}
$headers = [
'Content-Type' => $contentType,
'Content-Disposition' => 'attachment; '.encode_header_parameter('filename', $fileName),
];
if ($filesize) {
$headers['Content-Length'] = $filesize;
}
$isHttps = 'https' === $request->getUri()->getScheme();
$headers['Cache-Control'] = $isHttps
? 'private'
: 'no-cache, no-store, must-revalidate';
\Metrics::increment('core.file_download');
foreach ($headers as $key => $value) {
if ($response->hasHeader($key)) {
$response = $response->withAddedHeader($key, $value);
} else {
$response = $response->withHeader($key, $value);
}
}
$fileRef->incrementDownloadCounter();
$stream = Psr7\stream_for(fopen($pathFile, 'rb'));
return $response->withBody($stream);
}
}