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yaroslav-ilinyaroslav-ilin
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Chromium build (init)
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‎.gitignore

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node_modules/
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**/*.mmdb
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**/*.d.?ts
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assets/chromium/
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lib/**/index.mjs

‎Makefile

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@@ -20,6 +20,18 @@ assets/public/maxmind/GeoLite2-Country.mmdb :
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curl -vL "https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-Country&license_key=${MAXMIND_LICENSE_KEY}&suffix=tar.gz" | tar --strip-components 1 -xzv -C `dirname $@`
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ls -lAh `dirname $@`
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assets/chromium/manifest.json : package.json
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mkdir -p `dirname $@`
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bun bin/manifest.ts chromium > $@
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assets/chromium/service_worker.js : src/service_worker.ts
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mkdir -p `dirname $@`
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bun build --entrypoints src/service_worker.ts --outdir assets/chromium
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.PHONY : clean
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clean :
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-rm assets/chromium/{manifest.json,service_worker.js}
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.PHONY : distclean
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distclean :
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-rm assets/public/maxmind/GeoLite2-Country.mmdb

‎assets/_locales/en/messages.json

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{
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"ext_description": {
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"message": "Capture The Flag — browser extension."
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},
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"ext_name": {
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"message": "Capture The Flag"
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},
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"ext_short_name": {
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"message": "CTF"
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}
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}

‎assets/chromium/_locales

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../_locales

‎assets/chromium/icons

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../icons

‎bin/manifest.ts

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import { argv } from 'node:process';
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import _ from 'lodash-es';
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import pkg from '../package.json' with { type: 'json' };
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import Manifest from '../src/manifest.ts';
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if (import.meta.main) {
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main();
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}
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function main(args = argv.slice(2)) {
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const manifest = new Manifest(process.env, pkg);
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const target = _.first(args) as 'firefox' | 'chromium';
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console.log(manifest.render(target));
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}

‎package.json

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@@ -6,14 +6,18 @@
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"license": "MPL-2.0",
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"type": "module",
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"scripts": {
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"t": "bun test --watch",
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"postinstall": "make lib/maxmind"
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},
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"dependencies": {
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"buffer": "^6.0.3",
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"lodash-es": "^4.17.21",
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"mmdb-lib": "^2.1.1"
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},
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"devDependencies": {
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"@types/bun": "latest",
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"@types/lodash-es": "^4.17.12",
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"chrome-types": "latest",
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"eslint-config-nilfalse": "github:nilfalse/eslint",
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"prettier": "^3.3",
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"webpack-cli": "^5.1.4"

‎src/manifest.spec.ts

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import { describe, expect, it } from 'bun:test';
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import Manifest from './manifest';
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describe('manifest', () => {
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describe('Firefox', () => {
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it('should create manifest v2', async () => {
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const manifest = new Manifest(
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{},
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{ author: 'nilfalse.com', version: '1.0.0' },
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);
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expect(manifest.render('firefox').split('\n')).toStrictEqual([
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'{',
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' "manifest_version": 2,',
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' "name": "__MSG_ext_name__",',
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' "short_name": "__MSG_ext_short_name__",',
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' "version": "1.0.0",',
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' "default_locale": "en",',
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' "description": "__MSG_ext_description__",',
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' "icons": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "page_action": {',
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' "default_icon": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "default_popup": "popup.html",',
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' "show_matches": [',
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' "<all_urls>"',
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' ]',
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' },',
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' "background": {},',
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' "permissions": [',
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' "dns",',
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' "webRequest",',
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' "storage"',
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' ],',
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' "host_permissions": [',
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' "<all_urls>"',
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' ],',
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' "author": "nilfalse.com",',
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' "browser_specific_settings": {',
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' "gecko": {',
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' "id": "@ctf"',
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' }',
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' }',
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'}',
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]);
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});
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it('should use commit hash for version when it is available', async () => {
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const manifest = new Manifest(
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{ GITHUB_SHA: '666e666' },
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{ author: 'nilfalse.com', version: '1.0.0' },
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);
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expect(manifest.render('firefox').split('\n')).toStrictEqual([
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'{',
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' "manifest_version": 2,',
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' "name": "__MSG_ext_name__",',
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' "short_name": "__MSG_ext_short_name__",',
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' "version": "1.0.0",',
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' "version_name": "1.0.0 (666e666)",',
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' "default_locale": "en",',
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' "description": "__MSG_ext_description__",',
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' "icons": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "page_action": {',
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' "default_icon": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "default_popup": "popup.html",',
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' "show_matches": [',
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' "<all_urls>"',
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' ]',
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' },',
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' "background": {},',
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' "permissions": [',
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' "dns",',
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' "webRequest",',
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' "storage"',
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' ],',
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' "host_permissions": [',
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' "<all_urls>"',
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' ],',
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' "author": "nilfalse.com",',
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' "browser_specific_settings": {',
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' "gecko": {',
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' "id": "@ctf"',
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' }',
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' }',
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'}',
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]);
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});
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});
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describe('Chromium', () => {
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it('should create manifest v3', async () => {
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const manifest = new Manifest(
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{ GITHUB_SHA: '666e666' },
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{ author: 'nilfalse.com', version: '1.0.0' },
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);
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expect(manifest.render('chromium').split('\n')).toStrictEqual([
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'{',
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' "manifest_version": 3,',
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' "name": "__MSG_ext_name__",',
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' "short_name": "__MSG_ext_short_name__",',
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' "version": "1.0.0",',
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' "version_name": "1.0.0 (666e666)",',
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' "default_locale": "en",',
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' "description": "__MSG_ext_description__",',
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' "icons": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "action": {',
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' "default_icon": {',
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' "32": "icons/icon_32px.png",',
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' "48": "icons/icon_48px.png",',
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' "128": "icons/icon_128px.png",',
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' "256": "icons/icon_256px.png",',
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' "512": "icons/icon_512px.png"',
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' },',
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' "default_popup": "popup.html",',
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' "show_matches": [',
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' "<all_urls>"',
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' ]',
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' },',
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' "background": {',
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' "service_worker": "service_worker.js"',
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' },',
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' "permissions": [',
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' "webRequest",',
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' "storage",',
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' "offscreen"',
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' ],',
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' "host_permissions": [',
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' "<all_urls>"',
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' ],',
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' "author": "nilfalse.com"',
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'}',
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]);
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});
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});
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});

‎src/manifest.ts

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import _ from 'lodash-es';
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export default class Manifest {
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constructor(
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private readonly env: Record<string, string | undefined>,
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private readonly pkg: Record<string, unknown>,
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) {}
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get version() {
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const { GITHUB_SHA } = this.env;
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const { version } = this.pkg as { version: string };
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return GITHUB_SHA && version + ` (${GITHUB_SHA.substring(0, 8)})`;
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}
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get icons() {
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return {
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32: 'icons/icon_32px.png',
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48: 'icons/icon_48px.png',
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128: 'icons/icon_128px.png',
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256: 'icons/icon_256px.png',
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512: 'icons/icon_512px.png',
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};
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}
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get action() {
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return {
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default_icon: this.icons,
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default_popup: 'popup.html',
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show_matches: ['<all_urls>'],
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};
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}
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render(target: 'firefox' | 'chromium') {
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const { author, version } = this.pkg;
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const manifest = {
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manifest_version: undefined,
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name: '__MSG_ext_name__',
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short_name: '__MSG_ext_short_name__',
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version,
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version_name: this.version,
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default_locale: 'en',
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description: '__MSG_ext_description__',
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icons: this.icons,
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action: undefined,
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page_action: undefined,
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options_ui: undefined,
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// {
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// page: 'options.html',
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// open_in_tab: false,
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// },
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background: {
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background: undefined,
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service_worker: undefined,
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},
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permissions: ['webRequest', 'storage'],
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host_permissions: ['<all_urls>'],
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author,
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browser_specific_settings: undefined,
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};
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switch (target) {
72+
case 'firefox':
73+
_.set(manifest, 'manifest_version', 2);
74+
_.set(manifest, 'page_action', this.action);
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_.set(manifest, 'browser_specific_settings', {
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gecko: {
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id: '@ctf',
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},
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});
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manifest.permissions.unshift('dns');
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break;
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case 'chromium':
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_.set(manifest, 'manifest_version', 3);
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_.set(manifest, 'background.service_worker', 'service_worker.js');
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_.set(manifest, 'action', this.action);
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manifest.permissions.push('offscreen');
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break;
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default:
93+
throw new Error(
94+
`Unknown manifest: ${target}, expected 'firefox' or 'chromium'`,
95+
);
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}
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return JSON.stringify(manifest, null, 2);
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}
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}

‎src/service_worker.ts

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/// <reference lib="WebWorker" />
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/// <reference types="chrome-types" />
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import * as maxmind from '../lib/maxmind/index.mjs';
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chrome.runtime.onInstalled.addListener((details) => {
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console.log('Chrome Installing', details.reason);
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if (details.reason !== 'install' && details.reason !== 'update') {
10+
return;
11+
}
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});
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14+
const MAXMIND_URL = 'https://ctf.pages.dev/maxmind/GeoLite2-Country.mmdb';
15+
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self.addEventListener('activate', (event) => {
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console.log('Activating');
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event.waitUntil(
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caches
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.match(MAXMIND_URL)
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.then(
23+
(r) =>
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r ||
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caches
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.open('v1')
27+
.then((cache) => cache.addAll([MAXMIND_URL]))
28+
.then(() => caches.match(MAXMIND_URL)),
29+
)
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.then((r) => {
31+
console.log(r);
32+
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
33+
return r!;
34+
})
35+
.then(maxmind.init)
36+
.then((reader) => {
37+
console.log('Reader', reader);
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console.log(reader.get('185.51.76.136'));
40+
}),
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);
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});
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declare const self: ServiceWorkerGlobalScope;

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