(() => {
const KEYS = {
TCF: "cookiebotTcfConsentString",
GACM: "cookiebotGacmConsentString",
};
const log = (...a) =>
console.log("%c[CB-PERSIST]", "color:#7c3aed", ...a);
const warn = (...a) =>
console.warn("%c[CB-PERSIST]", "color:#ef4444", ...a);
function looksLikeTcfString(v) {
return (
typeof v === "string" &&
v.length >= 50 &&
/^[A-Za-z0-9.\-_]+$/.test(v)
);
}
function safeSetLS(k, v) {
try {
localStorage.setItem(k, v);
return true;
} catch (e) {
warn("localStorage.setItem failed", e);
return false;
}
}
function alreadyPersisted() {
return looksLikeTcfString(localStorage.getItem(KEYS.TCF));
}
function persistIfNeeded({ tcf, gacm, source }) {
if (!looksLikeTcfString(tcf)) return false;
if (alreadyPersisted()) {
log("SKIP", {
source,
tcfLen: localStorage.getItem(KEYS.TCF)?.length || 0,
hasGacm: !!localStorage.getItem(KEYS.GACM),
});
return true;
}
const ok1 = safeSetLS(KEYS.TCF, tcf);
let ok2 = true;
if (typeof gacm === "string" && gacm.length > 2) {
ok2 = safeSetLS(KEYS.GACM, gacm);
}
if (ok1 && ok2) {
log("WRITE", {
source,
tcfLen: tcf.length,
gacmWritten: typeof gacm === "string" && gacm.length > 2,
});
return true;
}
return false;
}
function tryFromLogConsentUrl(url, source) {
try {
const u = new URL(url, location.href);
if (!u.pathname.includes("logconsent.ashx")) return false;
const action = u.searchParams.get("action");
if (action !== "accept" && action !== "update") return false;
const tcf = u.searchParams.get("iab2") || "";
const gacm = u.searchParams.get("gacm") || "";
log("logconsent", {
action,
tcfLen: tcf.length,
gacmLen: gacm.length,
source,
});
return persistIfNeeded({
tcf,
gacm,
source: `${source} (logconsent.ashx)`,
});
} catch {
return false;
}
}
function tryFromGlobals(source) {
try {
const tcf =
window.CookieConsent?.IABConsentString ||
window.Cookiebot?.consent?.IABConsentString ||
window.Cookiebot?.consent?.tcfString ||
"";
const gacm =
window.CookieConsent?.GACMConsentString ||
window.Cookiebot?.consent?.GACMConsentString ||
"";
if (!tcf) return false;
log("globals", { source, tcfLen: tcf.length });
return persistIfNeeded({
tcf,
gacm,
source: `${source} (globals)`,
});
} catch {
return false;
}
}
function installNetworkCapture() {
if (window.fetch) {
const _fetch = window.fetch;
window.fetch = function (...args) {
const url =
typeof args[0] === "string" ? args[0] : args[0]?.url;
if (url) tryFromLogConsentUrl(url, "fetch");
return _fetch.apply(this, args);
};
log("fetch hooked");
}
const _open = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function (method, url, ...rest) {
this.__cb_url = url;
return _open.call(this, method, url, ...rest);
};
const _send = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function (body) {
if (this.__cb_url)
tryFromLogConsentUrl(this.__cb_url, "xhr");
return _send.call(this, body);
};
log("XHR hooked");
if (navigator.sendBeacon) {
const _beacon = navigator.sendBeacon.bind(navigator);
navigator.sendBeacon = function (url, data) {
if (url) tryFromLogConsentUrl(url, "sendBeacon");
return _beacon(url, data);
};
log("sendBeacon hooked");
}
const desc = Object.getOwnPropertyDescriptor(
Image.prototype,
"src"
);
if (desc?.set) {
Object.defineProperty(Image.prototype, "src", {
configurable: true,
enumerable: true,
get: desc.get,
set(v) {
if (typeof v === "string")
tryFromLogConsentUrl(v, "Image.src");
return desc.set.call(this, v);
},
});
log("Image.src hooked");
}
}
function runFallbacks(where) {
tryFromGlobals(where);
}
function installCookiebotListeners() {
window.addEventListener("CookiebotOnAccept", () => {
log("CookiebotOnAccept");
runFallbacks("CookiebotOnAccept");
let i = 0;
const iv = setInterval(() => {
i++;
runFallbacks("post-accept-poll");
if (alreadyPersisted() || i > 40) clearInterval(iv);
}, 50);
});
window.addEventListener("CookiebotOnConsentReady", () => {
log("CookiebotOnConsentReady");
runFallbacks("CookiebotOnConsentReady");
});
}
log("installed");
log("initial", {
tcfLS_len: localStorage.getItem(KEYS.TCF)?.length || 0,
hasGacmLS: !!localStorage.getItem(KEYS.GACM),
});
installNetworkCapture();
installCookiebotListeners();
window.__CB_PERSIST_STATUS__ = () => ({
tcfLS_len: localStorage.getItem(KEYS.TCF)?.length || 0,
gacmLS_len: localStorage.getItem(KEYS.GACM)?.length || 0,
alreadyPersisted: alreadyPersisted(),
});
})();
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