39 lines
1.0 KiB
TypeScript
39 lines
1.0 KiB
TypeScript
|
// Copyright: Ankitects Pty Ltd and contributors
|
||
|
|
// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
|
||
|
|
|
||
|
|
const parser = new DOMParser();
|
||
|
|
|
||
|
|
function createDummyDoc(html: string): string {
|
||
|
|
return (
|
||
|
|
"<html><head></head><body>" +
|
||
|
|
// parsingInstructions.join("") +
|
||
|
|
html +
|
||
|
|
"</body>"
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function removeTag(element: HTMLElement, tagName: string): void {
|
||
|
|
for (const elem of element.getElementsByTagName(tagName)) {
|
||
|
|
elem.remove();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const prohibitedTags = ["script", "link", "style"];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The use cases for using those tags in the field html are slim to none.
|
||
|
|
* We want to make it easier to possibly display cards in an iframe in the future.
|
||
|
|
*/
|
||
|
|
function removeProhibitedTags(html: string): string {
|
||
|
|
const doc = parser.parseFromString(createDummyDoc(html), "text/html");
|
||
|
|
const body = doc.body;
|
||
|
|
|
||
|
|
for (const tag of prohibitedTags) {
|
||
|
|
removeTag(body, tag);
|
||
|
|
}
|
||
|
|
|
||
|
|
return doc.body.innerHTML;
|
||
|
|
}
|
||
|
|
|
||
|
|
export default removeProhibitedTags;
|