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<?php
declare(strict_types=1);
namespace Sabre\DAV\Browser;
use Sabre\DAV;
use Sabre\DAV\INode;
use Sabre\DAV\PropFind;
use Sabre\Uri;
/**
* GuessContentType plugin.
*
* A lot of the built-in File objects just return application/octet-stream
* as a content-type by default. This is a problem for some clients, because
* they expect a correct contenttype.
*
* There's really no accurate, fast and portable way to determine the contenttype
* so this extension does what the rest of the world does, and guesses it based
* on the file extension.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class GuessContentType extends DAV\ServerPlugin
{
/**
* List of recognized file extensions.
*
* Feel free to add more
*
* @var array
*/
public $extensionMap = [
// images
'jpg' => 'image/jpeg',
'gif' => 'image/gif',
'png' => 'image/png',
// groupware
'ics' => 'text/calendar',
'vcf' => 'text/vcard',
// text
'txt' => 'text/plain',
];
/**
* Initializes the plugin.
*/
public function initialize(DAV\Server $server)
{
// Using a relatively low priority (200) to allow other extensions
// to set the content-type first.
$server->on('propFind', [$this, 'propFind'], 200);
}
/**
* Our PROPFIND handler.
*
* Here we set a contenttype, if the node didn't already have one.
*/
public function propFind(PropFind $propFind, INode $node)
{
$propFind->handle('{DAV:}getcontenttype', function () use ($propFind) {
list(, $fileName) = Uri\split($propFind->getPath());
return $this->getContentType($fileName);
});
}
/**
* Simple method to return the contenttype.
*
* @param string $fileName
*
* @return string
*/
protected function getContentType($fileName)
{
if (null !== $fileName) {
// Just grabbing the extension
$extension = strtolower(substr($fileName, strrpos($fileName, '.') + 1));
if (isset($this->extensionMap[$extension])) {
return $this->extensionMap[$extension];
}
}
return 'application/octet-stream';
}
}
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