feat: add checking func to discard all CDN domains owned by Ad-Shield

Author: piquark6046

builder/source/references/filterslists/ADG.ts

@@ -1,5 +1,6 @@
 import { HTTPS2Request } from '@typescriptprime/securereq'
 import * as AGTree from '@adguard/agtree'
+import { AdShieldCDNDomains } from './keywords.js'
 
 const AGBaseFilterListSpecificURL = 'https://adguardteam.github.io/AdguardFilters/BaseFilter/sections/specific.txt'
 const AGBaseFilterListAdShieldKeys = {
@@ -43,7 +44,7 @@ export async function IndexAdShieldDomainsFromAG(): Promise<Set<string>> {
     } catch {
       return false
     }
-    return true
+    return !AdShieldCDNDomains.has(Domain)
   })
 
   return new Set(FilteredDomains)

builder/source/references/filterslists/keywords.ts

@@ -0,0 +1,13 @@
+import { HTTPS2Request } from '@typescriptprime/securereq'
+
+export const AdShieldCDNDomains: Set<string> = new Set([
+  'html-load.com',
+  'css-load.com',
+  'ads.adthrive.com'
+])
+
+export async function IsAdShieldCDNDomain(Domain: string): Promise<boolean> {
+  const AdShieldCDNCheckResponse = await HTTPS2Request(new URL(`https://${Domain}/`), { ExpectedAs: 'String' }).catch(() => false)
+  return typeof AdShieldCDNCheckResponse !== 'boolean' && AdShieldCDNCheckResponse.StatusCode === 200 &&
+    AdShieldCDNCheckResponse.Body.includes('This domain is a part of the <a href="https://www.ad-shield.io/">Ad-Shield</a> (ad-shield.io) platform,')
+}