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Fixed regression: events suppressed on file:// pages unless scripts are allowed.

This commit is contained in:
hackademix 2020-08-24 18:28:47 +02:00
parent 721ab768d1
commit c1f0ef098f
1 changed files with 24 additions and 7 deletions
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31
src/content/staticNS.js
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@ -98,21 +98,37 @@
// Mozilla has already parsed the <head> element, we must take extra steps...
debug("Early parsing: preemptively suppressing events and script execution.");
{
let eventTypes = [];
for (let p in document.documentElement) if (p.startsWith("on")) eventTypes.push(p.substring(2));
let eventSuppressor = e => {
if (!ns.canScript) {
e.preventDefault();
e.stopImmediatePropagation();
e.stopPropagation();
if (e.type === "load") debug(`Suppressing ${e.type} on `, e.target);
} else {
debug("Stopping suppression");
for (let et of eventTypes) document.removeEventListener(et, eventSuppressor, true);
debug(`Suppressing ${e.type} on `, e.target); // DEV_ONLY
}
}
debug("Starting event suppression");
for (let et of eventTypes) document.addEventListener(et, eventSuppressor, true);
ns.on("capabilities", () => {
if (!ns.canScript) {
try {
for (node of document.querySelectorAll("*")) {
let evAttrs = [...node.attributes].filter(a => a.name.toLowerCase().startsWith("on"));
for (let a of evAttrs) {
debug("Reparsing event attribute after CSP", a, node);
node.removeAttributeNode(a);
node.setAttributeNodeNS(a);
}
}
} catch (e) {
error(e);
}
}
debug("Stopping event suppression");
for (let et of eventTypes) document.removeEventListener(et, eventSuppressor, true);
});
}
addEventListener("beforescriptexecute", e => {
@ -125,7 +141,8 @@
return;
}
let replacement = document.createRange().createContextualFragment(s.outerHTML);
replacement._original = e.target;
replacement._original = s;
s._replaced = true;
earlyScripts.push(replacement);
e.preventDefault();
dequeueEarlyScripts(true);