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Let injected CSP prevent onload events from firing on unfrozen embedded elements.

This commit is contained in:
hackademix 2020-09-04 15:14:13 +02:00
parent 681d00ef84
commit 373db2b7f2
1 changed files with 17 additions and 7 deletions
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24
src/lib/DocumentFreezer.js
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@ -14,9 +14,8 @@ var DocumentFreezer = (() => {
}
function freezeAttributes() {
try {
for (let element of document.querySelectorAll("*")) {
if (element._frozenAttributes) continue;
if (element._frozen) continue;
let fa = [];
let loaders = [];
for (let a of element.attributes) {
@ -41,16 +40,19 @@ var DocumentFreezer = (() => {
element.replaceWith(element = element.cloneNode(true));
}
}
element._frozenAttributes = fa;
if (fa.length) element._frozenAttributes = fa;
element._frozen = true;
}
} catch(e) { console.error(e )}
}
function unfreezeAttributes() {
for (let element of document.querySelectorAll("*")) {
if (!element._frozenAttributes) continue;
for (let a of element._frozenAttributes) {
element.setAttributeNodeNS(a);
element.setAttributeNS(a.namespaceURI, a.name, a.value);
}
if ("contentWindow" in element) {
element.replaceWith(element.cloneNode(true));
}
}
}
@ -74,7 +76,11 @@ var DocumentFreezer = (() => {
console.debug("Freezing", document.URL);
document._frozen = true;
for (let et of eventTypes) document.addEventListener(et, suppressEvents, true);
freezeAttributes();
try {
freezeAttributes();
} catch(e) {
console.error(e);
}
domFreezer.observe(document, {childList: true, subtree: true});
suppressedScripts = 0;
addEventListener("beforescriptexecute", scriptSuppressor, true);
@ -84,7 +90,11 @@ var DocumentFreezer = (() => {
if (!document._frozen) return false;
console.debug("Unfreezing", document.URL);
domFreezer.disconnect();
unfreezeAttributes();
try {
unfreezeAttributes();
} catch(e) {
console.error(e);
}
removeEventListener("beforescriptexecute", scriptSuppressor, true);
for (let et of eventTypes) document.removeEventListener(et, suppressEvents, true);
document._frozen = false;