| 1 |
efrain |
1 |
<?php
|
|
|
2 |
// This file is part of Moodle - http://moodle.org/
|
|
|
3 |
//
|
|
|
4 |
// Moodle is free software: you can redistribute it and/or modify
|
|
|
5 |
// it under the terms of the GNU General Public License as published by
|
|
|
6 |
// the Free Software Foundation, either version 3 of the License, or
|
|
|
7 |
// (at your option) any later version.
|
|
|
8 |
//
|
|
|
9 |
// Moodle is distributed in the hope that it will be useful,
|
|
|
10 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
11 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
12 |
// GNU General Public License for more details.
|
|
|
13 |
//
|
|
|
14 |
// You should have received a copy of the GNU General Public License
|
|
|
15 |
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
16 |
|
|
|
17 |
/**
|
|
|
18 |
* Verifies web crawler (search engine) access
|
|
|
19 |
*
|
|
|
20 |
* Not combined with disabled guest access because attackers might gain guest
|
|
|
21 |
* access by modifying browser signature.
|
|
|
22 |
*
|
|
|
23 |
* @package core
|
|
|
24 |
* @category check
|
|
|
25 |
* @copyright 2020 Brendan Heywood <brendan@catalyst-au.net>
|
|
|
26 |
* @copyright 2008 petr Skoda
|
|
|
27 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
28 |
*/
|
|
|
29 |
|
|
|
30 |
namespace core\check\security;
|
|
|
31 |
|
|
|
32 |
defined('MOODLE_INTERNAL') || die();
|
|
|
33 |
|
|
|
34 |
use core\check\check;
|
|
|
35 |
use core\check\result;
|
|
|
36 |
|
|
|
37 |
/**
|
|
|
38 |
* Verifies web crawler (search engine) access
|
|
|
39 |
*
|
|
|
40 |
* Not combined with disabled guest access because attackers might gain guest
|
|
|
41 |
* access by modifying browser signature.
|
|
|
42 |
*
|
|
|
43 |
* @copyright 2020 Brendan Heywood <brendan@catalyst-au.net>
|
|
|
44 |
* @copyright 2008 petr Skoda
|
|
|
45 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
46 |
*/
|
|
|
47 |
class crawlers extends check {
|
|
|
48 |
|
|
|
49 |
/**
|
|
|
50 |
* Get the short check name
|
|
|
51 |
*
|
|
|
52 |
* @return string
|
|
|
53 |
*/
|
|
|
54 |
public function get_name(): string {
|
|
|
55 |
return get_string('check_crawlers_name', 'report_security');
|
|
|
56 |
}
|
|
|
57 |
|
|
|
58 |
/**
|
|
|
59 |
* A link to a place to action this
|
|
|
60 |
*
|
|
|
61 |
* @return \action_link|null
|
|
|
62 |
*/
|
|
|
63 |
public function get_action_link(): ?\action_link {
|
|
|
64 |
return new \action_link(
|
|
|
65 |
new \moodle_url('/admin/settings.php?section=sitepolicies#admin-opentowebcrawlers'),
|
|
|
66 |
get_string('sitepolicies', 'admin'));
|
|
|
67 |
}
|
|
|
68 |
|
|
|
69 |
/**
|
|
|
70 |
* Return result
|
|
|
71 |
* @return result
|
|
|
72 |
*/
|
|
|
73 |
public function get_result(): result {
|
|
|
74 |
global $CFG;
|
|
|
75 |
$details = get_string('check_crawlers_details', 'report_security');
|
|
|
76 |
if (empty($CFG->opentowebcrawlers)) {
|
|
|
77 |
$status = result::OK;
|
|
|
78 |
$summary = get_string('check_crawlers_ok', 'report_security');
|
|
|
79 |
} else if (!empty($CFG->guestloginbutton)) {
|
|
|
80 |
$status = result::INFO;
|
|
|
81 |
$summary = get_string('check_crawlers_info', 'report_security');
|
|
|
82 |
} else {
|
|
|
83 |
$status = result::ERROR;
|
|
|
84 |
$summary = get_string('check_crawlers_error', 'report_security');
|
|
|
85 |
}
|
|
|
86 |
return new result($status, $summary, $details);
|
|
|
87 |
}
|
|
|
88 |
}
|
|
|
89 |
|