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February 8, 2022 01:35
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Persistent Manifest Version 3 (MV3) ServiceWorker https://bugs.chromium.org/p/chromium/issues/detail?id=1152255
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async function persistServiceWorker(src) { | |
return new Promise((resolve) => { | |
const removeFrames = (close = false) => { | |
for (const frame of document.querySelectorAll( | |
`[src="${src}index.html"]` | |
)) { | |
frame.parentNode.removeChild(frame); | |
} | |
if (close) { | |
port.postMessage('close'); | |
} | |
}; | |
removeFrames(); | |
onbeforeunload = (e) => { | |
removeFrames(true); | |
}; | |
onmessage = async (e) => { | |
if (e.origin === new URL(src).origin) { | |
console.log(e); | |
if (e.ports.length) { | |
[port] = e.ports; | |
port.onmessage = (e) => { | |
console.log(e.data); | |
}; | |
port.onmessageerror = (e) => { | |
console.error(e); | |
}; | |
if (iframe.parentNode) { | |
// TODO: remove iframe when port is defined | |
// iframe.parentNode.removeChild(iframe); | |
} | |
while (port) { | |
port.postMessage(null); | |
await new Promise((r) => setTimeout(r, 1000 * 5)); | |
} | |
} else if (e.data === 'close') { | |
if (iframe.parentNode) { | |
iframe.parentNode.removeChild(iframe); | |
onmessage = null; | |
port = null; | |
} | |
} | |
} | |
}; | |
iframe = document.createElement('iframe'); | |
iframe.style.display = 'none'; | |
iframe.name = location.origin; | |
document.body.appendChild(iframe); | |
iframe.onload = () => resolve(); | |
iframe.src = `${src}index.html`; | |
}); | |
} | |
function persistentServiceWorkerActive(url) { | |
alert(`Persistent ServiceWorker already running on ${url}`); | |
} | |
chrome.action.onClicked.addListener(async (tab) => { | |
if (!currentPersistentClient) { | |
currentPersistentClient = tab.url; | |
await chrome.scripting.executeScript({ | |
target: { | |
tabId: tab.id, | |
}, | |
world: 'MAIN', | |
args: [chrome.runtime.getURL('')], | |
func: persistServiceWorker, | |
}); | |
( | |
await self.clients.matchAll({ includeUncontrolled: true }) | |
)[0].postMessage(null, [port2]); | |
} else { | |
await chrome.scripting.executeScript({ | |
target: { | |
tabId: tab.id, | |
}, | |
world: 'MAIN', | |
args: [currentPersistentClient], | |
func: persistentServiceWorkerActive, | |
}); | |
} | |
}); | |
oninstall = async (event) => { | |
console.log(event); | |
event.waitUntil(self.skipWaiting()); | |
}; | |
onactivate = async (event) => { | |
console.log(event); | |
event.waitUntil(self.clients.claim()); | |
}; | |
onfetch = async (event) => { | |
console.log(event); | |
}; | |
// persistent data | |
const start = new Date(); | |
let currentPersistentClient = null; | |
let lastEventId = 0; | |
// MessageChannel between external source and extension ServiceWorkerGlobalScope | |
let { port1, port2 } = new MessageChannel(); | |
port1.onmessageerror = (err) => { | |
console.error(err); | |
currentPersistentClient = null; | |
port1.close(); | |
chrome.runtime.reload(); | |
}; | |
port1.onmessage = async (e) => { | |
if (e.data === 'close') { | |
console.log(e); | |
port1.close(); | |
chrome.runtime.reload(); | |
} | |
if (e.data === 'port2') { | |
port1.postMessage('port1'); | |
return; | |
} | |
port1.postMessage({ | |
lastEventId, | |
start, | |
now: new Date(), | |
minutes: (new Date() - start) / 60000, | |
message: `Message from ${e.target.constructor.name} in ${globalThis.constructor.name}`, | |
}); | |
++lastEventId; | |
}; | |
onmessage = (e) => { | |
if (e.data === 'close') { | |
port1.close(); | |
chrome.runtime.reload(); | |
} | |
}; |
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<script type="module" src="./index.js"></script> |
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function closeMessageChannel() { | |
parent.postMessage('close', name); | |
} | |
navigator.serviceWorker.oncontrollerchange = async (e) => { | |
console.log(e); | |
closeMessageChannel(); | |
}; | |
navigator.serviceWorker.onmessage = async (e) => { | |
parent.postMessage(e.data, name, e.ports); | |
try { | |
while ((await navigator.serviceWorker.ready).active) { | |
(await navigator.serviceWorker.ready).active.postMessage(null); | |
await new Promise((resolve) => setTimeout(resolve, 1000 * 15)); | |
} | |
closeMessageChannel(); | |
} catch (err) { | |
console.error(err); | |
closeMessageChannel(); | |
} | |
}; | |
console.log(chrome.runtime); |
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{ | |
"name": "Persistent ServiceWorker - web_accessible_resources, iframe, MessageEvent", | |
"version": "1.0", | |
"manifest_version": 3, | |
"permissions": ["scripting"], | |
"host_permissions": ["<all_urls>"], | |
"background": { | |
"service_worker": "background.js", | |
"type": "module" | |
}, | |
"web_accessible_resources": [{ | |
"resources": ["*.html", "*.js"], | |
"matches": ["<all_urls>"], | |
"extensions": [ ] | |
}], | |
"action": {}, | |
"author": "guest271314" | |
} |
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