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[CRX] Use DNR instead of webRequest in preserve-referer

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webRequestBlocking is unavailable in MV3. Non-blocking webRequest can
still be used to detect the Referer, but we have to use
declarativeNetRequest to change the Referer header as needed.
This commit is contained in:
Rob Wu 2024-09-01 01:02:13 +02:00
parent 7494dbccf4
commit bd3d993180
4 changed files with 74 additions and 89 deletions
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3
web/chromecom.js
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@ -267,6 +267,7 @@ if (window === top) {
});
}
let dnrRequestId;
// This port is used for several purposes:
// 1. When disconnected, the background page knows that the frame has unload.
// 2. When the referrer was saved in history.state.chromecomState, it is sent
@ -281,6 +282,7 @@ let port;
// 3. Background -> page: Send latest referer and save to history.
// 4. Page: Invoke callback.
function setReferer(url, callback) {
dnrRequestId ??= crypto.getRandomValues(new Uint32Array(1))[0] % 0x80000000;
if (!port) {
// The background page will accept the port, and keep adding the Referer
// request header to requests to |url| until the port is disconnected.
@ -290,6 +292,7 @@ function setReferer(url, callback) {
port.onMessage.addListener(onMessage);
// Initiate the information exchange.
port.postMessage({
dnrRequestId,
referer: window.history.state?.chromecomState,
requestUrl: url,
});