~fkooman/vpn-user-portal

ref: 2.3.10 vpn-user-portal/src/QrModule.php -rw-r--r-- 1.3 KiB
e0bd9cc0François Kooman prepare for release 1 year, 19 days ago
                                                                                
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
<?php

/*
 * eduVPN - End-user friendly VPN.
 *
 * Copyright: 2016-2019, The Commons Conservancy eduVPN Programme
 * SPDX-License-Identifier: AGPL-3.0+
 */

namespace LC\Portal;

use LC\Common\Http\Request;
use LC\Common\Http\Response;
use LC\Common\Http\Service;
use LC\Common\Http\ServiceModuleInterface;

class QrModule implements ServiceModuleInterface
{
    const QR_ENCODE_PATH = '/usr/bin/qrencode';

    /**
     * @return void
     */
    public function init(Service $service)
    {
        $service->get(
            '/qr',
            /**
             * @return \LC\Common\Http\Response
             */
            function (Request $request, array $hookData) {
                $qrText = $request->requireQueryParameter('qr_text');

                $response = new Response(200, 'image/png');
                $response->setBody(self::generate($qrText));

                return $response;
            }
        );
    }

    /**
     * @param string $qrText
     *
     * @return string
     */
    private static function generate($qrText)
    {
        ob_start();
        passthru(
            sprintf(
                '%s -m 0 -s 5 -t PNG -o - %s',
                self::QR_ENCODE_PATH,
                escapeshellarg($qrText)
            )
        );

        return ob_get_clean();
    }
}