https://ru-drive.com/local/templates/ru-drive/js/form-security.js

1(function () {
2    'use strict';
3
4    var refreshEndpoint = '/local/ajax-files/captcha_refresh.php';
5
6    function findParentByClass(node, className) {
7        while (node && node !== document) {
8            if (node.classList && node.classList.contains(className)) {
9                return node;
10            }
11
12            node = node.parentNode;
13        }
14
15        return null;
16    }
17
18    function setLoading(button, isLoading) {
19        button.disabled = isLoading;
20        button.setAttribute('aria-busy', isLoading ? 'true' : 'false');
21
22        if (isLoading) {
23            button.classList.add('is-loading');
24        } else {
25            button.classList.remove('is-loading');
26        }
27    }
28
29    function showError(control, button) {
30        var status = control.querySelector('.js-captcha-status');
31        var message = button.getAttribute('data-error-message') || 'Не удалось обновить CAPTCHA.';
32
33        if (status) {
34            status.textContent = message;
35        }
36    }
37
38    function refreshCaptcha(button) {
39        var control = findParentByClass(button, 'js-captcha-control');
40
41        if (!control || button.disabled) {
42            return;
43        }
44
45        var sidInput = control.querySelector('input[name="captcha_sid"]');
46        var wordInput = control.querySelector('input[name="captcha_word"]');
47        var image = control.querySelector('.js-captcha-image');
48        var status = control.querySelector('.js-captcha-status');
49
50        if (!sidInput || !image) {
51            return;
52        }
53
54        setLoading(button, true);
55
56        if (status) {
57            status.textContent = '';
58        }
59
60        var request = new XMLHttpRequest();
61        request.open('GET', refreshEndpoint + '?_=' + new Date().getTime(), true);
62        request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
63
64        request.onreadystatechange = function () {
65            if (request.readyState !== 4) {
66                return;
67            }
68
69            setLoading(button, false);
70
71            if (request.status < 200 || request.status >= 300) {
72                showError(control, button);
73                return;
74            }
75
76            var response;
77
78            try {
79                response = JSON.parse(request.responseText);
80            } catch (error) {
81                showError(control, button);
82                return;
83            }
84
85            if (!response.success || !response.captchaSid) {
86                showError(control, button);
87                return;
88            }
89
90            sidInput.value = response.captchaSid;
91            image.src = '/bitrix/tools/captcha.php?captcha_sid='
92                + encodeURIComponent(response.captchaSid)
93                + '&_='
94                + new Date().getTime();
95
96            if (wordInput) {
97                wordInput.value = '';
98                wordInput.focus();
99            }
100        };
101
102        request.onerror = function () {
103            setLoading(button, false);
104            showError(control, button);
105        };
106
107        request.send();
108    }
109
110    document.addEventListener('click', function (event) {
111        var button = findParentByClass(event.target, 'js-captcha-refresh');
112
113        if (!button) {
114            return;
115        }
116
117        event.preventDefault();
118        refreshCaptcha(button);
119    });
120}());