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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* Bug 1801277 - Shim Microsoft virtual assistant.
*
* The microsoft virtual assistant will break when accessing the indexedDB that
* will throw a security error because the virtual assistant is under a
* third-party tracking domain 'liveperson.net'. The shim replaces the indexedDB
* with a fake interface that won't throw an error.
*/
/* globals cloneInto */
(function() {
const win = window.wrappedJSObject;
try {
// We only replace the indexedDB when liveperson.net is loaded in a
// third-party context. Note that this is not strictly correct because
// this is a cross-origin check but not a third-party check.
if (win.parent == win || win.location.origin == win.top.location.origin) {
return;
}
} catch (e) {
// If we get a security error when accessing the top-level origin, this
// shows that the window is in a cross-origin context. In this case, we can
// proceed to apply the shim.
if (e.name != "SecurityError") {
throw e;
}
}
const emptyMsg = cloneInto({ message: "" }, window);
const idb = {
open: () => win.Promise.reject(emptyMsg),
};
Object.defineProperty(win, "indexedDB", {
value: cloneInto(idb, window, { cloneFunctions: true }),
});
})();
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