rentgen/memory.ts

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import ExtendedRequest from './extended-request';
import { getshorthost, makeThrottle } from './util';
import { RequestCluster } from './request-cluster';
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import { SaferEmitter } from './safer-emitter';
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function setDomainsCount(counter: number, tabId: number) {
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browser.browserAction.setBadgeText({ text: counter < 0 ? '0' : counter.toString(), tabId });
browser.browserAction.setTitle({
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title: 'Rentgen',
tabId,
});
}
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export default class Memory extends SaferEmitter {
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origin_to_history = {} as Record<string, Record<string, RequestCluster>>;
async register(request: ExtendedRequest) {
await request.init();
if (!request.isThirdParty()) {
return;
}
if (!this.origin_to_history[request.origin]) {
this.origin_to_history[request.origin] = {};
}
const shorthost = getshorthost(new URL(request.url).host);
if (!this.origin_to_history[request.origin][shorthost]) {
const cluster = new RequestCluster(shorthost);
this.origin_to_history[request.origin][shorthost] = cluster;
}
this.origin_to_history[request.origin][shorthost].add(request);
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this.emit('change', shorthost);
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Object.values(this.getClustersForOrigin(request.origin)).some((cluster) =>
cluster.hasCookies()
)
? browser.browserAction.setBadgeBackgroundColor({ color: '#ff726b' })
: browser.browserAction.setBadgeBackgroundColor({ color: '#ffb900' });
if (request.tabId >= 0) {
setDomainsCount(
Object.values(this.getClustersForOrigin(request.origin)).length,
request.tabId
);
}
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}
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constructor() {
super();
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browser.webRequest.onBeforeRequest.addListener(
async (request) => {
new ExtendedRequest(request);
},
{ urls: ['<all_urls>'] },
['requestBody']
);
browser.webRequest.onBeforeSendHeaders.addListener(
async (request) => {
const extendedRequest = ExtendedRequest.by_id[request.requestId].addHeaders(
request.requestHeaders || []
);
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this.register(extendedRequest);
},
{ urls: ['<all_urls>'] },
['requestHeaders']
);
}
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emit(eventName: string, data = 'any'): boolean {
setTimeout(() => super.emit(eventName, data), 0);
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return;
}
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getClustersForOrigin(origin: string): Record<string, RequestCluster> {
return this.origin_to_history[origin] || {};
}
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async removeCookiesFor(origin: string, shorthost?: string): Promise<void> {
if (shorthost) {
const cookies = await browser.cookies.getAll({ domain: shorthost });
for (const cookie of cookies) {
console.log('removing cookie', cookie.name, 'from', cookie.domain);
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await browser.cookies.remove({
name: cookie.name,
url: `https://${cookie.domain}`,
});
}
} else {
const clusters = this.getClustersForOrigin(origin);
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await Promise.all(
Object.values(clusters)
.filter((cluster) => !shorthost || cluster.id === shorthost)
.map((cluster) => this.removeCookiesFor(origin, cluster.id))
);
}
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}
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async removeRequestsFor(origin: string) {
this.origin_to_history[origin] = {};
}
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}
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export function init() {
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const memory = new Memory();
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(window as any).memory = memory;
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}
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export function getMemory(): Memory {
return (browser.extension.getBackgroundPage().window as any).memory as Memory;
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}