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'use strict';
window.addEventListener("paste", e => {
let data = e.clipboardData;
let html = data.getData("text/html");
let t = e.target;
if (t.nodeType !== 1) t = t.parentElement;
try {
let node = t.cloneNode();
node.innerHTML = html;
if (sanitizeExtras(node)) {
let sanitized = node.innerHTML;
setTimeout(function() { try {
if (sanitizeExtras(t)) {
console.log(`[NoScript] Sanitized\n<PASTE>\n${html}\n</PASTE>to\n<PASTE>\n${t.innerHTML}\n</PASTE>`, t);
}
} catch(ex) {
console.log(ex);
}}, 0);
}
} catch(ex) {
console.log(ex);
}
function removeAttribute(node, name, value = node.getAttribute(name)) {
node.setAttribute(`data-noscript-removed-${name}`, value);
node.removeAttribute(name);
}
function sanitizeExtras(el) {
let ret = false;
// remove attributes from forms
for (let f of el.getElementsByTagName("form")) {
for (let a of f.attributes) {
f.removeAttribute(a.name);
ret = true;
}
}
let urlAttributes = ['href', 'to', 'from', 'by', 'values'];
let selector = urlAttributes.map(a => `[${a}]`).join(',');
for (let node of el.querySelectorAll(selector)) {
for (let name of urlAttributes) {
let value = node.getAttribute(name);
if (/^\W*(?:(?:javascript|data):|https?:[\s\S]+[[(<])/i.test(unescape(value))) {
node.setAttribute(`data-noscript-removed-${name}`, value);
node.removeAttribute(name);
ret = true;
}
}
}
return ret;
}
}, true);
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