54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
|
import { sanitize as dompurifySanitize, addHook } from 'dompurify';
|
||
|
|
import { getBaseURL, relativePathToAbsolute } from '~/lib/utils/url_utility';
|
||
|
|
|
||
|
|
// Safely allow SVG <use> tags
|
||
|
|
|
||
|
|
const defaultConfig = {
|
||
|
|
ADD_TAGS: ['use'],
|
||
|
|
};
|
||
|
|
|
||
|
|
// Only icons urls from `gon` are allowed
|
||
|
|
const getAllowedIconUrls = (gon = window.gon) =>
|
||
|
|
[gon.sprite_file_icons, gon.sprite_icons].filter(Boolean);
|
||
|
|
|
||
|
|
const isUrlAllowed = url => getAllowedIconUrls().some(allowedUrl => url.startsWith(allowedUrl));
|
||
|
|
|
||
|
|
const isHrefSafe = url =>
|
||
|
|
isUrlAllowed(url) || isUrlAllowed(relativePathToAbsolute(url, getBaseURL()));
|
||
|
|
|
||
|
|
const removeUnsafeHref = (node, attr) => {
|
||
|
|
if (!node.hasAttribute(attr)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!isHrefSafe(node.getAttribute(attr))) {
|
||
|
|
node.removeAttribute(attr);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sanitize icons' <use> tag attributes, to safely include
|
||
|
|
* svgs such as in:
|
||
|
|
*
|
||
|
|
* <svg viewBox="0 0 100 100">
|
||
|
|
* <use href="/assets/icons-xxx.svg#icon_name"></use>
|
||
|
|
* </svg>
|
||
|
|
*
|
||
|
|
* @param {Object} node - Node to sanitize
|
||
|
|
*/
|
||
|
|
const sanitizeSvgIcon = node => {
|
||
|
|
removeUnsafeHref(node, 'href');
|
||
|
|
|
||
|
|
// Note: `xlink:href` is deprecated, but still in use
|
||
|
|
// https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/xlink:href
|
||
|
|
removeUnsafeHref(node, 'xlink:href');
|
||
|
|
};
|
||
|
|
|
||
|
|
addHook('afterSanitizeAttributes', node => {
|
||
|
|
if (node.tagName.toLowerCase() === 'use') {
|
||
|
|
sanitizeSvgIcon(node);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
export const sanitize = (val, config = defaultConfig) => dompurifySanitize(val, config);
|