all: sync with master

.github/stale.yml

@@ -4,15 +4,17 @@
 'daysUntilClose': 15
 # Issues with these labels will never be considered stale.
 'exemptLabels':
-- 'bug'
+  - 'bug'
-- 'documentation'
+  - 'documentation'
-- 'enhancement'
+  - 'enhancement'
-- 'feature request'
+  - 'feature request'
-- 'help wanted'
+  - 'help wanted'
-- 'localization'
+  - 'localization'
-- 'needs investigation'
+  - 'needs investigation'
-- 'recurrent'
+  - 'recurrent'
-- 'research'
+  - 'research'
+# Set to true to ignore issues in a milestone.
+'exemptMilestones': true
 # Label to use when marking an issue as stale.
 'staleLabel': 'wontfix'
 # Comment to post when marking an issue as stale. Set to `false` to disable.
@@ -22,3 +24,5 @@
   for your contributions.
 # Comment to post when closing a stale issue. Set to `false` to disable.
 'closeComment': false
+# Limit the number of actions per hour.
+'limitPerRun': 1

CHANGELOG.md

@@ -20,7 +20,18 @@ and this project adheres to
 - Weaker cipher suites that use the CBC (cipher block chaining) mode of
   operation have been disabled ([#2993]).
 
+### Added
+
+- Support for plain (unencrypted) HTTP/2 ([#4930]).  This is useful for AdGuard
+  Home installations behind a reverse proxy.
+
+### Fixed
+
+- Incorrect path template in DDR responses ([#4927]).
+
 [#2993]: https://github.com/AdguardTeam/AdGuardHome/issues/2993
+[#4927]: https://github.com/AdguardTeam/AdGuardHome/issues/4927
+[#4930]: https://github.com/AdguardTeam/AdGuardHome/issues/4930
 
 
 
@@ -41,9 +52,9 @@ See also the [v0.107.13 GitHub milestone][ms-v0.107.13].
 
 ### Added
 
-- The new optional `dns.ipset_file` property in the configuration file.  It
+- The new optional `dns.ipset_file` property, which can be set in the
-  allows loading the `ipset` list from a file, just like `dns.upstream_dns_file`
+  configuration file.  It allows loading the `ipset` list from a file, just like
-  does for upstream servers ([#4686]).
+  `dns.upstream_dns_file` does for upstream servers ([#4686]).
 
 ### Changed
 

client/src/__locales/be.json

@@ -635,5 +635,6 @@
     "parental_control": "Бацькоўскі кантроль",
     "safe_browsing": "Бяспечны інтэрнэт",
     "served_from_cache": "{{value}} <i>(атрымана з кэша)</i>",
-    "form_error_password_length": "Пароль павінен быць не менш за {{value}} сімвалаў"
+    "form_error_password_length": "Пароль павінен быць не менш за {{value}} сімвалаў",
+    "anonymizer_notification": "<0>Заўвага:</0> Ананімізацыя IP уключана. Вы можаце адключыць яго ў <1>Агульных наладах</1> ."
 }

client/src/__locales/cs.json

@@ -635,5 +635,6 @@
     "parental_control": "Rodičovská ochrana",
     "safe_browsing": "Bezpečné prohlížení",
     "served_from_cache": "{{value}} <i>(převzato z mezipaměti)</i>",
-    "form_error_password_length": "Heslo musí být alespoň {{value}} znaků dlouhé"
+    "form_error_password_length": "Heslo musí být alespoň {{value}} znaků dlouhé",
+    "anonymizer_notification": "<0>Poznámka:</0> Anonymizace IP je zapnuta. Můžete ji vypnout v <1>Obecných nastaveních</1>."
 }

client/src/__locales/da.json

@@ -635,5 +635,6 @@
     "parental_control": "Forældrekontrol",
     "safe_browsing": "Sikker Browsing",
     "served_from_cache": "{{value}} <i>(leveret fra cache)</i>",
-    "form_error_password_length": "Adgangskoden skal udgøre mindst {{value}} tegn."
+    "form_error_password_length": "Adgangskoden skal udgøre mindst {{value}} tegn.",
+    "anonymizer_notification": "<0>Bemærk:</0> IP-anonymisering er aktiveret. Det kan deaktiveres via <1>Generelle indstillinger</1>."
 }

client/src/__locales/de.json

@@ -635,5 +635,6 @@
     "parental_control": "Kindersicherung",
     "safe_browsing": "Internetsicherheit",
     "served_from_cache": "{{value}} <i>(aus dem Cache abgerufen)</i>",
-    "form_error_password_length": "Das Passwort muss mindestens {{value}} Zeichen enthalten"
+    "form_error_password_length": "Das Passwort muss mindestens {{value}} Zeichen enthalten",
+    "anonymizer_notification": "<0>Hinweis:</0> Die IP-Anonymisierung ist aktiviert. Sie können sie in den <1>Allgemeinen Einstellungen</1> deaktivieren."
 }

client/src/__locales/en.json

@@ -635,5 +635,6 @@
     "parental_control": "Parental Control",
     "safe_browsing": "Safe Browsing",
     "served_from_cache": "{{value}} <i>(served from cache)</i>",
-    "form_error_password_length": "Password must be at least {{value}} characters long"
+    "form_error_password_length": "Password must be at least {{value}} characters long",
+    "anonymizer_notification": "<0>Note:</0> IP anonymization is enabled. You can disable it in <1>General settings</1>."
 }

client/src/__locales/es.json

@@ -635,5 +635,6 @@
     "parental_control": "Control parental",
     "safe_browsing": "Navegación segura",
     "served_from_cache": "{{value}} <i>(servido desde la caché)</i>",
-    "form_error_password_length": "La contraseña debe tener al menos {{value}} caracteres"
+    "form_error_password_length": "La contraseña debe tener al menos {{value}} caracteres",
+    "anonymizer_notification": "<0>Nota:</0> La anonimización de IP está habilitada. Puedes deshabilitarla en <1>Configuración general</1>."
 }

client/src/__locales/fi.json

@@ -635,5 +635,6 @@
     "parental_control": "Lapsilukko",
     "safe_browsing": "Turvallinen selaus",
     "served_from_cache": "{{value}} <i>(jaettu välimuistista)</i>",
-    "form_error_password_length": "Salasanan on oltava ainakin {{value}} merkkiä"
+    "form_error_password_length": "Salasanan on oltava ainakin {{value}} merkkiä",
+    "anonymizer_notification": "<0>Huomioi:</0> IP-osoitteen anonymisointi on käytössä. Voit poistaa sen käytöstä <1>Yleisistä asetuksista</1>."
 }

client/src/__locales/fr.json

@@ -635,5 +635,6 @@
     "parental_control": "Contrôle parental",
     "safe_browsing": "Navigation sécurisée",
     "served_from_cache": "{{value}} <i>(depuis le cache)</i>",
-    "form_error_password_length": "Le mot de passe doit comporter au moins {{value}} caractères"
+    "form_error_password_length": "Le mot de passe doit comporter au moins {{value}} caractères",
+    "anonymizer_notification": "<0>Note :</0> L'anonymisation IP est activée. Vous pouvez la désactiver dans les <1>paramètres généraux</1>."
 }

client/src/__locales/hr.json

@@ -635,5 +635,6 @@
     "parental_control": "Roditeljska zaštita",
     "safe_browsing": "Sigurno surfanje",
     "served_from_cache": "{{value}} <i>(dohvaćeno iz predmemorije)</i>",
-    "form_error_password_length": "Lozinka mora imati najmanje {{value}} znakova"
+    "form_error_password_length": "Lozinka mora imati najmanje {{value}} znakova",
+    "anonymizer_notification": "<0>Napomena:</0>IP anonimizacija je omogućena. Možete ju onemogućiti u <1>općim postavkama</1>."
 }

client/src/__locales/hu.json

@@ -635,5 +635,6 @@
     "parental_control": "Szülői felügyelet",
     "safe_browsing": "Biztonságos böngészés",
     "served_from_cache": "{{value}} <i>(gyorsítótárból kiszolgálva)</i>",
-    "form_error_password_length": "A jelszó legalább {{value}} karakter hosszú kell, hogy legyen"
+    "form_error_password_length": "A jelszó legalább {{value}} karakter hosszú kell, hogy legyen",
+    "anonymizer_notification": "<0>Megjegyzés:</0> Az IP anonimizálás engedélyezve van. Az <1>Általános beállításoknál letilthatja</1> ."
 }

client/src/__locales/id.json

@@ -635,5 +635,6 @@
     "parental_control": "Kontrol Orang Tua",
     "safe_browsing": "Penjelajahan Aman",
     "served_from_cache": "{{value}} <i>(disajikan dari cache)</i>",
-    "form_error_password_length": "Kata sandi harus minimal {{value}} karakter"
+    "form_error_password_length": "Kata sandi harus minimal {{value}} karakter",
+    "anonymizer_notification": "<0>Catatan:</0> Anonimisasi IP diaktifkan. Anda dapat menonaktifkannya di <1>Pengaturan umum</1> ."
 }

client/src/__locales/it.json

@@ -635,5 +635,6 @@
     "parental_control": "Controllo Parentale",
     "safe_browsing": "Navigazione Sicura",
     "served_from_cache": "{{value}} <i>(fornito dalla cache)</i>",
-    "form_error_password_length": "La password deve contenere almeno {{value}} caratteri"
+    "form_error_password_length": "La password deve contenere almeno {{value}} caratteri",
+    "anonymizer_notification": "<0>Attenzione:</0> L'anonimizzazione dell'IP è abilitata. Puoi disabilitarla in <1>Impostazioni generali</1>."
 }

client/src/__locales/ja.json

@@ -635,5 +635,6 @@
     "parental_control": "ペアレンタルコントロール",
     "safe_browsing": "セーフブラウジング",
     "served_from_cache": "{{value}} <i>(キャッシュから応答)</i>",
-    "form_error_password_length": "パスワードは{{value}}文字以上にしてください"
+    "form_error_password_length": "パスワードは{{value}}文字以上にしてください",
+    "anonymizer_notification": "【<0>注意</0>】IPの匿名化が有効になっています。 <1>一般設定</1>で無効にできます。"
 }

client/src/__locales/ko.json

@@ -635,5 +635,6 @@
     "parental_control": "자녀 보호",
     "safe_browsing": "세이프 브라우징",
     "served_from_cache": "{{value}} <i>(캐시에서 제공)</i>",
-    "form_error_password_length": "비밀번호는 {{value}}자 이상이어야 합니다"
+    "form_error_password_length": "비밀번호는 {{value}}자 이상이어야 합니다",
+    "anonymizer_notification": "<0>참고:</0> IP 익명화가 활성화되었습니다. <1>일반 설정</1>에서 비활성화할 수 있습니다."
 }

client/src/__locales/nl.json

@@ -557,7 +557,7 @@
     "fastest_addr_desc": "Alle DNS-servers bevragen en het snelste IP adres terugkoppelen. Dit zal de DNS verzoeken vertragen omdat AdGuard Home moet wachten op de antwoorden van alles DNS-servers, maar verbetert wel de connectiviteit.",
     "autofix_warning_text": "Als je op \"Repareren\" klikt, configureert AdGuard Home jouw systeem om de AdGuard Home DNS-server te gebruiken.",
     "autofix_warning_list": "De volgende taken worden uitgevoerd: <0> Deactiveren van Systeem DNSStubListener</0> <0> DNS-serveradres instellen op 127.0.0.1 </0> <0> Symbolisch koppelingsdoel van /etc/resolv.conf vervangen door /run/systemd/resolve/resolv.conf </0> <0> Stop DNSStubListener (herlaad systemd-resolved service) </0>",
-    "autofix_warning_result": "Als gevolg hiervan worden alle DNS-verzoeken van je systeem standaard door AdGuard Home verwerkt.",
+    "autofix_warning_result": "Als gevolg hiervan worden alle DNS-aanvragen van je systeem standaard door AdGuard Home verwerkt.",
     "tags_title": "Labels",
     "tags_desc": "Je kunt labels selecteren die overeenkomen met de client. Labels kunnen worden opgenomen in de filterregels om ze \n nauwkeuriger toe te passen. <0>Meer informatie</0>.",
     "form_select_tags": "Client tags selecteren",
@@ -628,12 +628,13 @@
     "original_response": "Oorspronkelijke reactie",
     "click_to_view_queries": "Klik om queries te bekijken",
     "port_53_faq_link": "Poort 53 wordt vaak gebruikt door services als DNSStubListener- of de systeem DNS-resolver. Lees a.u.b. <0>deze instructie</0> hoe dit is op te lossen.",
-    "adg_will_drop_dns_queries": "AdGuard Home zal alle DNS-verzoeken van deze cliënt laten vervallen.",
+    "adg_will_drop_dns_queries": "AdGuard Home zal alle DNS-aanvragen van deze cliënt laten vervallen.",
     "filter_allowlist": "WAARSCHUWING: Deze actie zal ook de regel \"{{disallowed_rule}}\" uitsluiten van de lijst met toegestane clients.",
     "last_rule_in_allowlist": "Kan deze client niet weigeren omdat het uitsluiten van de regel \"{{disallowed_rule}}\" de lijst \"Toegestane clients\" zal UITSCHAKELEN.",
     "use_saved_key": "De eerder opgeslagen sleutel gebruiken",
     "parental_control": "Ouderlijk toezicht",
     "safe_browsing": "Veilig browsen",
     "served_from_cache": "{{value}} <i>(geleverd vanuit cache)</i>",
-    "form_error_password_length": "Wachtwoord moet minimaal {{value}} tekens lang zijn"
+    "form_error_password_length": "Wachtwoord moet minimaal {{value}} tekens lang zijn",
+    "anonymizer_notification": "<0>Opmerking:</0> IP-anonimisering is ingeschakeld. Je kunt het uitschakelen in <1>Algemene instellingen</1>."
 }

client/src/__locales/pl.json

@@ -635,5 +635,6 @@
     "parental_control": "Kontrola rodzicielska",
     "safe_browsing": "Bezpieczne przeglądanie",
     "served_from_cache": "{{value}} <i>(podawane z pamięci podręcznej)</i>",
-    "form_error_password_length": "Hasło musi mieć co najmniej {{value}} znaków"
+    "form_error_password_length": "Hasło musi mieć co najmniej {{value}} znaków",
+    "anonymizer_notification": "<0>Uwaga:</0> Anonimizacja IP jest włączona. Możesz ją wyłączyć w <1>Ustawieniach ogólnych</1>."
 }

client/src/__locales/pt-br.json

@@ -635,5 +635,6 @@
     "parental_control": "Controle parental",
     "safe_browsing": "Navegação segura",
     "served_from_cache": "{{value}} <i>(servido do cache)</i>",
-    "form_error_password_length": "A senha deve ter pelo menos {{value}} caracteres"
+    "form_error_password_length": "A senha deve ter pelo menos {{value}} caracteres",
+    "anonymizer_notification": "<0>Observação:</0> A anonimização de IP está ativada. Você pode desativá-lo em <1>Configurações gerais</1>."
 }

client/src/__locales/pt-pt.json

@@ -635,5 +635,6 @@
     "parental_control": "Controlo parental",
     "safe_browsing": "Navegação segura",
     "served_from_cache": "{{value}} <i>(servido do cache)</i>",
-    "form_error_password_length": "A palavra-passe deve ter pelo menos {{value}} caracteres"
+    "form_error_password_length": "A palavra-passe deve ter pelo menos {{value}} caracteres",
+    "anonymizer_notification": "<0>Observação:</0> A anonimização de IP está ativada. Você pode desativá-la em <1>Definições gerais</1>."
 }

client/src/__locales/ro.json

@@ -635,5 +635,6 @@
     "parental_control": "Control Parental",
     "safe_browsing": "Navigare în siguranță",
     "served_from_cache": "{{value}} <i>(furnizat din cache)</i>",
-    "form_error_password_length": "Parola trebuie să aibă cel puțin {{value}} caractere"
+    "form_error_password_length": "Parola trebuie să aibă cel puțin {{value}} caractere",
+    "anonymizer_notification": "<0>Nota:</0> Anonimizarea IP este activată. Puteți să o dezactivați în <1>Setări generale</1>."
 }

client/src/__locales/ru.json

@@ -635,5 +635,6 @@
     "parental_control": "Родительский контроль",
     "safe_browsing": "Безопасный интернет",
     "served_from_cache": "{{value}} <i>(получено из кеша)</i>",
-    "form_error_password_length": "Пароль должен быть длиной не меньше {{value}} символов"
+    "form_error_password_length": "Пароль должен быть длиной не меньше {{value}} символов",
+    "anonymizer_notification": "<0>Внимание:</0> включена анонимизация IP-адресов. Вы можете отключить её в разделе <1>Основные настройки</1>."
 }

client/src/__locales/sk.json

@@ -635,5 +635,6 @@
     "parental_control": "Rodičovská kontrola",
     "safe_browsing": "Bezpečné prehliadanie",
     "served_from_cache": "{{value}} <i>(prevzatá z cache pamäte)</i>",
-    "form_error_password_length": "Heslo musí mať dĺžku aspoň {{value}} znakov"
+    "form_error_password_length": "Heslo musí mať dĺžku aspoň {{value}} znakov",
+    "anonymizer_notification": "<0>Poznámka:</0> Anonymizácia IP je zapnutá. Môžete ju vypnúť vo <1>Všeobecných nastaveniach</1>."
 }

client/src/__locales/sl.json

@@ -635,5 +635,6 @@
     "parental_control": "Starševski nadzor",
     "safe_browsing": "Varno brskanje",
     "served_from_cache": "{{value}} <i>(postreženo iz predpomnilnika)</i>",
-    "form_error_password_length": "Geslo mora vsebovati najmanj {{value}} znakov"
+    "form_error_password_length": "Geslo mora vsebovati najmanj {{value}} znakov",
+    "anonymizer_notification": "<0>Opomba:</0> Anonimizacija IP je omogočena. Onemogočite ga lahko v <1>Splošnih nastavitvah</1>."
 }

client/src/__locales/sr-cs.json

@@ -635,5 +635,6 @@
     "parental_control": "Roditeljska kontrola",
     "safe_browsing": "Sigurno pregledanje",
     "served_from_cache": "{{value}} <i>(posluženo iz predmemorije)</i>",
-    "form_error_password_length": "Lozinka mora imati najmanje {{value}} znakova"
+    "form_error_password_length": "Lozinka mora imati najmanje {{value}} znakova",
+    "anonymizer_notification": "<0>Nota:</0> IP prepoznavanje je omogućeno. Možete ga onemogućiti u opštim <1>postavkama</1>."
 }

client/src/__locales/sv.json

@@ -635,5 +635,6 @@
     "parental_control": "Föräldrakontroll",
     "safe_browsing": "Säker surfning",
     "served_from_cache": "{{value}} <i>(levereras från cache)</i>",
-    "form_error_password_length": "Lösenordet måste vara minst {{value}} tecken långt"
+    "form_error_password_length": "Lösenordet måste vara minst {{value}} tecken långt",
+    "anonymizer_notification": "<0>Observera:</0> IP-anonymisering är aktiverad. Du kan inaktivera den i <1>Allmänna inställningar</1>."
 }

client/src/__locales/tr.json

@@ -368,7 +368,7 @@
     "encryption_server_enter": "Alan adınızı girin",
     "encryption_server_desc": "Ayarlanırsa, AdGuard Home ClientID'leri algılar, DDR sorgularına yanıt verir ve ek bağlantı doğrulamaları gerçekleştirir. Ayarlanmazsa, bu özellikler devre dışı bırakılır. Sertifikadaki DNS Adlarından biriyle eşleşmelidir.",
     "encryption_redirect": "Otomatik olarak HTTPS'e yönlendir",
-    "encryption_redirect_desc": "Etkinleştirirseniz, AdGuard Home sizi HTTP adresi yerine HTTPS adresine yönlendirir.",
+    "encryption_redirect_desc": "İşaretlenirse, AdGuard Home sizi otomatik olarak HTTP adresinden HTTPS adreslerine yönlendirecektir.",
     "encryption_https": "HTTPS bağlantı noktası",
     "encryption_https_desc": "HTTPS bağlantı noktası yapılandırılırsa, AdGuard Home yönetici arayüzüne HTTPS aracılığıyla erişilebilir olacak ve ayrıca '/dns-query' üzerinden DNS-over-HTTPS bağlantısı sağlayacaktır.",
     "encryption_dot": "DNS-over-TLS bağlantı noktası",
@@ -408,7 +408,7 @@
     "fix": "Düzelt",
     "dns_providers": "Aralarından seçim yapabileceğiniz, bilinen <0>DNS sağlayıcıların listesi</0>.",
     "update_now": "Şimdi güncelle",
-    "update_failed": "Otomatik güncelleme başarısız oldu. Elle güncellemek için lütfen <a>bu adımları uygulayın</a>.",
+    "update_failed": "Otomatik güncelleme başarısız oldu. Elle güncellemek için lütfen <a>bu adımları izleyin</a>.",
     "manual_update": "Elle güncellemek için lütfen <a>bu adımları uygulayın</a>.",
     "processing_update": "Lütfen bekleyin, AdGuard Home güncelleniyor",
     "clients_title": "Kalıcı istemciler",
@@ -635,5 +635,6 @@
     "parental_control": "Ebeveyn Denetimi",
     "safe_browsing": "Güvenli Gezinti",
     "served_from_cache": "{{value}} <i>(önbellekten kullanıldı)</i>",
-    "form_error_password_length": "Parola en az {{value}} karakter uzunluğunda olmalıdır"
+    "form_error_password_length": "Parola en az {{value}} karakter uzunluğunda olmalıdır",
+    "anonymizer_notification": "<0>Not:</0> IP anonimleştirme etkinleştirildi. Bunu <1>Genel ayarlardan</1> devre dışı bırakabilirsiniz."
 }

client/src/__locales/uk.json

@@ -635,5 +635,6 @@
     "parental_control": "Батьківський контроль",
     "safe_browsing": "Безпечний перегляд",
     "served_from_cache": "{{value}} <i>(отримано з кешу)</i>",
-    "form_error_password_length": "Пароль мусить мати принаймні {{value}} символів"
+    "form_error_password_length": "Пароль мусить мати принаймні {{value}} символів",
+    "anonymizer_notification": "<0>Примітка:</0> IP-анонімізацію ввімкнено. Ви можете вимкнути його в <1>Загальні налаштування</1> ."
 }

client/src/__locales/vi.json

@@ -635,5 +635,6 @@
     "parental_control": "Quản lý của phụ huynh",
     "safe_browsing": "Duyệt web an toàn",
     "served_from_cache": "{{value}} <i>(được phục vụ từ bộ nhớ cache)</i>",
-    "form_error_password_length": "Mật khẩu phải có ít nhất {{value}} ký tự"
+    "form_error_password_length": "Mật khẩu phải có ít nhất {{value}} ký tự",
+    "anonymizer_notification": "<0> Lưu ý:</0> Tính năng ẩn danh IP được bật. Bạn có thể tắt nó trong <1> Cài đặt chung</1>."
 }

client/src/__locales/zh-cn.json

@@ -635,5 +635,6 @@
     "parental_control": "家长控制",
     "safe_browsing": "安全浏览",
     "served_from_cache": "{{value}}<i>(由缓存提供)</i>",
-    "form_error_password_length": "密码必须至少有 {{value}} 个字符"
+    "form_error_password_length": "密码必须至少有 {{value}} 个字符",
+    "anonymizer_notification": "<0>注意：</0> IP 匿名化已启用。您可以在<1>常规设置</1>中禁用它。"
 }

client/src/__locales/zh-tw.json

@@ -635,5 +635,6 @@
     "parental_control": "家長控制",
     "safe_browsing": "安全瀏覽",
     "served_from_cache": "{{value}} <i>(由快取提供)</i>",
-    "form_error_password_length": "密碼必須為至少長 {{value}} 個字元"
+    "form_error_password_length": "密碼必須為至少長 {{value}} 個字元",
+    "anonymizer_notification": "<0>注意：</0>IP 匿名化被啟用。您可在<1>一般設定</1>中禁用它。"
 }

client/src/components/Filters/Table.js

@@ -41,13 +41,13 @@ class Table extends Component {
         {
             Header: <Trans>name_table_header</Trans>,
             accessor: 'name',
-            minWidth: 200,
+            minWidth: 180,
             Cell: CellWrap,
         },
         {
             Header: <Trans>list_url_table_header</Trans>,
             accessor: 'url',
-            minWidth: 200,
+            minWidth: 180,
             Cell: ({ value }) => (
                 <div className="logs__row">
                     {isValidAbsolutePath(value) ? value
@@ -73,7 +73,7 @@ class Table extends Component {
             Header: <Trans>last_time_updated_table_header</Trans>,
             accessor: 'lastUpdated',
             className: 'text-center',
-            minWidth: 150,
+            minWidth: 180,
             Cell: this.getDateCell,
         },
         {

client/src/components/Logs/AnonymizerNotification.js

@@ -0,0 +1,16 @@
+import React from 'react';
+import { Trans } from 'react-i18next';
+import { HashLink as Link } from 'react-router-hash-link';
+
+const AnonymizerNotification = () => (
+    <div className="alert alert-primary mt-6">
+        <Trans components={[
+            <strong key="0">text</strong>,
+            <Link to="/settings#logs-config" key="1">link</Link>,
+        ]}>
+            anonymizer_notification
+        </Trans>
+    </div>
+);
+
+export default AnonymizerNotification;

client/src/components/Logs/Cells/ClientCell.js

@@ -62,7 +62,7 @@ const ClientCell = ({
         'white-space--nowrap': isDetailed,
     });
 
-    const hintClass = classNames('icons mr-4 icon--24 icon--lightgray', {
+    const hintClass = classNames('icons mr-4 icon--24 logs__question icon--lightgray', {
         'my-3': isDetailed,
     });
 

client/src/components/Logs/Cells/DomainCell.js

@@ -34,7 +34,7 @@ const DomainCell = ({
         'my-3': isDetailed,
     });
 
-    const privacyIconClass = classNames('icons mx-2 icon--24 d-none d-sm-block', {
+    const privacyIconClass = classNames('icons mx-2 icon--24 d-none d-sm-block logs__question', {
         'icon--green': hasTracker,
         'icon--disabled': !hasTracker,
         'my-3': isDetailed,

client/src/components/Logs/Cells/IconTooltip.css

@@ -49,6 +49,12 @@
     padding-top: 1rem;
 }
 
+@media (max-width: 1024px) {
+    .grid .key-colon, .grid .title--border {
+        font-weight: 600;
+    }
+}
+
 @media (max-width: 767.98px) {
     .grid {
         grid-template-columns: 35% 55%;
@@ -70,10 +76,6 @@
         grid-column: 2 / span 1;
         margin: 0 !important;
     }
-
-    .grid .key-colon, .grid .title--border {
-        font-weight: 600;
-    }
 }
 
 .grid .key-colon:nth-child(odd)::after {

client/src/components/Logs/Cells/ResponseCell.js

@@ -97,7 +97,7 @@ const ResponseCell = ({
     return (
         <div className="logs__cell logs__cell--response" role="gridcell">
             <IconTooltip
-                className={classNames('icons mr-4 icon--24 icon--lightgray', { 'my-3': isDetailed })}
+                className={classNames('icons mr-4 icon--24 icon--lightgray logs__question', { 'my-3': isDetailed })}
                 columnClass='grid grid--limited'
                 tooltipClass='px-5 pb-5 pt-4 mw-75 custom-tooltip__response-details'
                 contentItemClass='text-truncate key-colon o-hidden'

client/src/components/Logs/Logs.css

@@ -485,3 +485,13 @@
 .bg--green {
     color: var(--green79);
 }
+
+@media (max-width: 1024px) {
+    .logs__question {
+        display: none;
+    }
+}
+
+.logs__modal {
+    max-width: 720px;
+}

client/src/components/Logs/index.js

@@ -25,6 +25,7 @@ import {
 import InfiniteTable from './InfiniteTable';
 import './Logs.css';
 import { BUTTON_PREFIX } from './Cells/helpers';
+import AnonymizerNotification from './AnonymizerNotification';
 
 const processContent = (data) => Object.entries(data)
     .map(([key, value]) => {
@@ -73,6 +74,7 @@ const Logs = () => {
         processingGetConfig,
         processingAdditionalLogs,
         processingGetLogs,
+        anonymize_client_ip: anonymizeClientIp,
     } = useSelector((state) => state.queryLogs, shallowEqual);
     const filter = useSelector((state) => state.queryLogs.filter, shallowEqual);
     const logs = useSelector((state) => state.queryLogs.logs, shallowEqual);
@@ -104,6 +106,8 @@ const Logs = () => {
         setIsSmallScreen(e.matches);
         if (e.matches) {
             dispatch(toggleDetailedLogs(false));
+        } else {
+            dispatch(toggleDetailedLogs(true));
         }
     };
 
@@ -180,35 +184,49 @@ const Logs = () => {
                 setButtonType={setButtonType}
                 setModalOpened={setModalOpened}
         />
-        <Modal portalClassName='grid' isOpen={isSmallScreen && isModalOpened}
+        <Modal
+            portalClassName='grid'
+            isOpen={isSmallScreen && isModalOpened}
             onRequestClose={closeModal}
             style={{
                 content: {
                     width: '100%',
                     height: 'fit-content',
-                       left: 0,
+                    left: '50%',
                     top: 47,
                     padding: '1rem 1.5rem 1rem',
+                    maxWidth: '720px',
+                    transform: 'translateX(-50%)',
                 },
                 overlay: {
                     backgroundColor: 'rgba(0,0,0,0.5)',
                 },
             }}
         >
+            <div className="logs__modal-wrap">
                 <svg
-                    className="icon icon--24 icon-cross d-block d-md-none cursor--pointer"
+                    className="icon icon--24 icon-cross d-block cursor--pointer"
-                    onClick={closeModal}>
+                    onClick={closeModal}
+                >
                     <use xlinkHref="#cross" />
                 </svg>
                 {processContent(detailedDataCurrent, buttonType)}
+            </div>
         </Modal>
     </>;
 
-    return <>
+    return (
-        {enabled && processingGetConfig && <Loading />}
+        <>
-        {enabled && !processingGetConfig && renderPage()}
+            {enabled && (
+                <>
+                    {processingGetConfig && <Loading />}
+                    {anonymizeClientIp && <AnonymizerNotification />}
+                    {!processingGetConfig && renderPage()}
+                </>
+            )}
             {!enabled && !processingGetConfig && <Disabled />}
-    </>;
+        </>
+    );
 };
 
 export default Logs;

client/src/components/ui/Tabler.css

@@ -2820,6 +2820,11 @@ fieldset:disabled a.btn {
 }
 
 .btn-outline-primary:focus,
+.btn-outline-primary.focus {
+    box-shadow: none;
+}
+
+.btn-outline-primary:focus-visible,
 .btn-outline-primary.focus {
     box-shadow: 0 0 0 2px rgba(70, 127, 207, 0.5);
 }
@@ -2858,6 +2863,11 @@ fieldset:disabled a.btn {
 }
 
 .btn-outline-secondary:focus,
+.btn-outline-secondary.focus {
+    box-shadow: none;
+}
+
+.btn-outline-secondary:focus-visible,
 .btn-outline-secondary.focus {
     box-shadow: 0 0 0 2px rgba(134, 142, 150, 0.5);
 }

client/src/components/ui/Tabs.css

@@ -67,6 +67,7 @@
     height: 24px;
     margin-bottom: 6px;
     fill: #4a4a4a;
+    touch-action: initial;
 }
 
 .tab__text {

client/src/helpers/constants.js

@@ -526,8 +526,8 @@ export const DEFAULT_DATE_FORMAT_OPTIONS = {
     month: 'numeric',
     day: 'numeric',
     hour: 'numeric',
+    hourCycle: 'h23',
     minute: 'numeric',
-    hour12: false,
 };
 
 export const DETAILED_DATE_FORMAT_OPTIONS = {

internal/aghhttp/aghhttp.go

@@ -9,6 +9,12 @@ import (
 	"github.com/AdguardTeam/golibs/log"
 )
 
+// HTTP scheme constants.
+const (
+	SchemeHTTP  = "http"
+	SchemeHTTPS = "https"
+)
+
 // RegisterFunc is the function that sets the handler to handle the URL for the
 // method.
 //

internal/aghnet/ipset_linux.go

@@ -18,15 +18,9 @@ import (
 
 // How to test on a real Linux machine:
 //
-// 1.  Run:
+//  1. Run "sudo ipset create example_set hash:ip family ipv4".
 //
-//   sudo ipset create example_set hash:ip family ipv4
+//  2. Run "sudo ipset list example_set".  The Members field should be empty.
-//
-// 2.  Run:
-//
-//   sudo ipset list example_set
-//
-// The Members field should be empty.
 //
 //  3. Add the line "example.com/example_set" to your AdGuardHome.yaml.
 //
@@ -34,11 +28,8 @@ import (
 //
 //  5. Make requests to example.com and its subdomains.
 //
-// 6.  Run:
+//  6. Run "sudo ipset list example_set".  The Members field should contain the
-//
+//     resolved IP addresses.
-//   sudo ipset list example_set
-//
-// The Members field should contain the resolved IP addresses.
 
 // newIpsetMgr returns a new Linux ipset manager.
 func newIpsetMgr(ipsetConf []string) (set IpsetManager, err error) {

internal/aghtls/aghtls.go

@@ -0,0 +1,30 @@
+// Package aghtls contains utilities for work with TLS.
+package aghtls
+
+import "crypto/tls"
+
+// SaferCipherSuites returns a set of default cipher suites with vulnerable and
+// weak cipher suites removed.
+func SaferCipherSuites() (safe []uint16) {
+	for _, s := range tls.CipherSuites() {
+		switch s.ID {
+		case
+			tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_128_CBC_SHA256,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
+			// Less safe 3DES and CBC suites, go on.
+		default:
+			safe = append(safe, s.ID)
+		}
+	}
+
+	return safe
+}

internal/dnsforward/config.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtls"
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
 	"github.com/AdguardTeam/dnsproxy/proxy"
 	"github.com/AdguardTeam/dnsproxy/upstream"
@@ -468,6 +469,7 @@ func (s *Server) prepareTLS(proxyConfig *proxy.Config) error {
 
 	proxyConfig.TLSConfig = &tls.Config{
 		GetCertificate: s.onGetCertificate,
+		CipherSuites:   aghtls.SaferCipherSuites(),
 		MinVersion:     tls.VersionTLS12,
 	}
 

internal/dnsforward/dns.go

@@ -296,7 +296,7 @@ func (s *Server) makeDDRResponse(req *dns.Msg) (resp *dns.Msg) {
 		values := []dns.SVCBKeyValue{
 			&dns.SVCBAlpn{Alpn: []string{"h2"}},
 			&dns.SVCBPort{Port: uint16(addr.Port)},
-			&dns.SVCBDoHPath{Template: "/dns-query?dns"},
+			&dns.SVCBDoHPath{Template: "/dns-query{?dns}"},
 		}
 
 		ans := &dns.SVCB{

internal/dnsforward/dns_test.go

@@ -26,7 +26,7 @@ func TestServer_ProcessDDRQuery(t *testing.T) {
 		Value: []dns.SVCBKeyValue{
 			&dns.SVCBAlpn{Alpn: []string{"h2"}},
 			&dns.SVCBPort{Port: 8044},
-			&dns.SVCBDoHPath{Template: "/dns-query?dns"},
+			&dns.SVCBDoHPath{Template: "/dns-query{?dns}"},
 		},
 	}
 

internal/dnsforward/dnsforward_test.go

@@ -67,10 +67,11 @@ func createTestServer(
 		ID: 0, Data: []byte(rules),
 	}}
 
-	f := filtering.New(filterConf, filters)
+	f, err := filtering.New(filterConf, filters)
+	require.NoError(t, err)
+
 	f.SetEnabled(true)
 
-	var err error
 	s, err = NewServer(DNSCreateParams{
 		DHCPServer:  testDHCP,
 		DNSFilter:   f,
@@ -774,7 +775,9 @@ func TestBlockedCustomIP(t *testing.T) {
 		Data: []byte(rules),
 	}}
 
-	f := filtering.New(&filtering.Config{}, filters)
+	f, err := filtering.New(&filtering.Config{}, filters)
+	require.NoError(t, err)
+
 	s, err := NewServer(DNSCreateParams{
 		DHCPServer:  testDHCP,
 		DNSFilter:   f,
@@ -906,7 +909,9 @@ func TestRewrite(t *testing.T) {
 			Type:   dns.TypeCNAME,
 		}},
 	}
-	f := filtering.New(c, nil)
+	f, err := filtering.New(c, nil)
+	require.NoError(t, err)
+
 	f.SetEnabled(true)
 
 	s, err := NewServer(DNSCreateParams{
@@ -1021,19 +1026,14 @@ var testDHCP = &dhcpd.MockInterface{
 	OnWriteDiskConfig:   func(c *dhcpd.ServerConfig) { panic("not implemented") },
 }
 
-// func (*testDHCP) Leases(flags dhcpd.GetLeasesFlags) (leases []*dhcpd.Lease) {
-// 	return []*dhcpd.Lease{{
-// 		IP:       net.IP{192, 168, 12, 34},
-// 		HWAddr:   net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
-// 		Hostname: "myhost",
-// 	}}
-// }
-
 func TestPTRResponseFromDHCPLeases(t *testing.T) {
 	const localDomain = "lan"
 
+	flt, err := filtering.New(&filtering.Config{}, nil)
+	require.NoError(t, err)
+
 	s, err := NewServer(DNSCreateParams{
-		DNSFilter:   filtering.New(&filtering.Config{}, nil),
+		DNSFilter:   flt,
 		DHCPServer:  testDHCP,
 		PrivateNets: netutil.SubnetSetFunc(netutil.IsLocallyServed),
 		LocalDomain: localDomain,
@@ -1100,9 +1100,11 @@ func TestPTRResponseFromHosts(t *testing.T) {
 		assert.Equal(t, uint32(1), atomic.LoadUint32(&eventsCalledCounter))
 	})
 
-	flt := filtering.New(&filtering.Config{
+	flt, err := filtering.New(&filtering.Config{
 		EtcHosts: hc,
 	}, nil)
+	require.NoError(t, err)
+
 	flt.SetEnabled(true)
 
 	var s *Server

internal/dnsforward/filter_test.go

@@ -35,7 +35,8 @@ func TestHandleDNSRequest_filterDNSResponse(t *testing.T) {
 		ID: 0, Data: []byte(rules),
 	}}
 
-	f := filtering.New(&filtering.Config{}, filters)
+	f, err := filtering.New(&filtering.Config{}, filters)
+	require.NoError(t, err)
 	f.SetEnabled(true)
 
 	s, err := NewServer(DNSCreateParams{

internal/filtering/blocked.go

@@ -421,31 +421,34 @@ func initBlockedServices() {
 }
 
 // BlockedSvcKnown - return TRUE if a blocked service name is known
-func BlockedSvcKnown(s string) bool {
+func BlockedSvcKnown(s string) (ok bool) {
-	_, ok := serviceRules[s]
+	_, ok = serviceRules[s]
+
 	return ok
 }
 
 // ApplyBlockedServices - set blocked services settings for this DNS request
-func (d *DNSFilter) ApplyBlockedServices(setts *Settings, list []string, global bool) {
+func (d *DNSFilter) ApplyBlockedServices(setts *Settings, list []string) {
 	setts.ServicesRules = []ServiceEntry{}
-	if global {
+	if list == nil {
 		d.confLock.RLock()
 		defer d.confLock.RUnlock()
+
 		list = d.Config.BlockedServices
 	}
+
 	for _, name := range list {
 		rules, ok := serviceRules[name]
-
 		if !ok {
 			log.Error("unknown service name: %s", name)
+
 			continue
 		}
 
-		s := ServiceEntry{}
+		setts.ServicesRules = append(setts.ServicesRules, ServiceEntry{
-		s.Name = name
+			Name:  name,
-		s.Rules = rules
+			Rules: rules,
-		setts.ServicesRules = append(setts.ServicesRules, s)
+		})
 	}
 }
 
@@ -490,10 +493,3 @@ func (d *DNSFilter) handleBlockedServicesSet(w http.ResponseWriter, r *http.Requ
 
 	d.ConfigModified()
 }
-
-// registerBlockedServicesHandlers - register HTTP handlers
-func (d *DNSFilter) registerBlockedServicesHandlers() {
-	d.Config.HTTPRegister(http.MethodGet, "/control/blocked_services/services", d.handleBlockedServicesAvailableServices)
-	d.Config.HTTPRegister(http.MethodGet, "/control/blocked_services/list", d.handleBlockedServicesList)
-	d.Config.HTTPRegister(http.MethodPost, "/control/blocked_services/set", d.handleBlockedServicesSet)
-}

internal/filtering/controlfiltering.go

@@ -1,4 +1,4 @@
-package home
+package filtering
 
 import (
 	"encoding/json"
@@ -34,7 +34,7 @@ func validateFilterURL(urlStr string) (err error) {
 		return fmt.Errorf("checking filter url: %w", err)
 	}
 
-	if s := url.Scheme; s != schemeHTTP && s != schemeHTTPS {
+	if s := url.Scheme; s != aghhttp.SchemeHTTP && s != aghhttp.SchemeHTTPS {
 		return fmt.Errorf("checking filter url: invalid scheme %q", s)
 	}
 
@@ -47,7 +47,7 @@ type filterAddJSON struct {
 	Whitelist bool   `json:"whitelist"`
 }
 
-func (f *Filtering) handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
 	fj := filterAddJSON{}
 	err := json.NewDecoder(r.Body).Decode(&fj)
 	if err != nil {
@@ -65,14 +65,14 @@ func (f *Filtering) handleFilteringAddURL(w http.ResponseWriter, r *http.Request
 	}
 
 	// Check for duplicates
-	if filterExists(fj.URL) {
+	if d.filterExists(fj.URL) {
 		aghhttp.Error(r, w, http.StatusBadRequest, "Filter URL already added -- %s", fj.URL)
 
 		return
 	}
 
 	// Set necessary properties
-	filt := filter{
+	filt := FilterYAML{
 		Enabled: true,
 		URL:     fj.URL,
 		Name:    fj.Name,
@@ -81,7 +81,7 @@ func (f *Filtering) handleFilteringAddURL(w http.ResponseWriter, r *http.Request
 	filt.ID = assignUniqueFilterID()
 
 	// Download the filter contents
-	ok, err := f.update(&filt)
+	ok, err := d.update(&filt)
 	if err != nil {
 		aghhttp.Error(
 			r,
@@ -109,14 +109,14 @@ func (f *Filtering) handleFilteringAddURL(w http.ResponseWriter, r *http.Request
 
 	// URL is assumed valid so append it to filters, update config, write new
 	// file and reload it to engines.
-	if !filterAdd(filt) {
+	if !d.filterAdd(filt) {
 		aghhttp.Error(r, w, http.StatusBadRequest, "Filter URL already added -- %s", filt.URL)
 
 		return
 	}
 
-	onConfigModified()
+	d.ConfigModified()
-	enableFilters(true)
+	d.EnableFilters(true)
 
 	_, err = fmt.Fprintf(w, "OK %d rules\n", filt.RulesCount)
 	if err != nil {
@@ -124,7 +124,7 @@ func (f *Filtering) handleFilteringAddURL(w http.ResponseWriter, r *http.Request
 	}
 }
 
-func (f *Filtering) handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
 	type request struct {
 		URL       string `json:"url"`
 		Whitelist bool   `json:"whitelist"`
@@ -138,23 +138,23 @@ func (f *Filtering) handleFilteringRemoveURL(w http.ResponseWriter, r *http.Requ
 		return
 	}
 
-	config.Lock()
+	d.filtersMu.Lock()
-	filters := &config.Filters
+	filters := &d.Filters
 	if req.Whitelist {
-		filters = &config.WhitelistFilters
+		filters = &d.WhitelistFilters
 	}
 
-	var deleted filter
+	var deleted FilterYAML
-	var newFilters []filter
+	var newFilters []FilterYAML
-	for _, f := range *filters {
+	for _, flt := range *filters {
-		if f.URL != req.URL {
+		if flt.URL != req.URL {
-			newFilters = append(newFilters, f)
+			newFilters = append(newFilters, flt)
 
 			continue
 		}
 
-		deleted = f
+		deleted = flt
-		path := f.Path()
+		path := flt.Path(d.DataDir)
 		err = os.Rename(path, path+".old")
 		if err != nil {
 			log.Error("deleting filter %q: %s", path, err)
@@ -162,10 +162,10 @@ func (f *Filtering) handleFilteringRemoveURL(w http.ResponseWriter, r *http.Requ
 	}
 
 	*filters = newFilters
-	config.Unlock()
+	d.filtersMu.Unlock()
 
-	onConfigModified()
+	d.ConfigModified()
-	enableFilters(true)
+	d.EnableFilters(true)
 
 	// NOTE: The old files "filter.txt.old" aren't deleted.  It's not really
 	// necessary, but will require the additional complicated code to run
@@ -191,55 +191,51 @@ type filterURLReq struct {
 	Whitelist bool              `json:"whitelist"`
 }
 
-func (f *Filtering) handleFilteringSetURL(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringSetURL(w http.ResponseWriter, r *http.Request) {
 	fj := filterURLReq{}
 	err := json.NewDecoder(r.Body).Decode(&fj)
 	if err != nil {
-		aghhttp.Error(r, w, http.StatusBadRequest, "json decode: %s", err)
+		aghhttp.Error(r, w, http.StatusBadRequest, "decoding request: %s", err)
 
 		return
 	}
 
 	if fj.Data == nil {
-		err = errors.Error("data cannot be null")
+		aghhttp.Error(r, w, http.StatusBadRequest, "%s", errors.Error("data is absent"))
-		aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
 
 		return
 	}
 
 	err = validateFilterURL(fj.Data.URL)
 	if err != nil {
-		err = fmt.Errorf("invalid url: %s", err)
+		aghhttp.Error(r, w, http.StatusBadRequest, "invalid url: %s", err)
-		aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
 
 		return
 	}
 
-	filt := filter{
+	filt := FilterYAML{
 		Enabled: fj.Data.Enabled,
 		Name:    fj.Data.Name,
 		URL:     fj.Data.URL,
 	}
-	status := f.filterSetProperties(fj.URL, filt, fj.Whitelist)
+	status := d.filterSetProperties(fj.URL, filt, fj.Whitelist)
 	if (status & statusFound) == 0 {
-		http.Error(w, "URL doesn't exist", http.StatusBadRequest)
+		aghhttp.Error(r, w, http.StatusBadRequest, "URL doesn't exist")
+
 		return
 	}
 	if (status & statusURLExists) != 0 {
-		http.Error(w, "URL already exists", http.StatusBadRequest)
+		aghhttp.Error(r, w, http.StatusBadRequest, "URL already exists")
+
 		return
 	}
 
-	onConfigModified()
+	d.ConfigModified()
 
 	restart := (status & statusEnabledChanged) != 0
 	if (status&statusUpdateRequired) != 0 && fj.Data.Enabled {
-		// download new filter and apply its rules
+		// download new filter and apply its rules.
-		flags := filterRefreshBlocklists
+		nUpdated := d.refreshFilters(!fj.Whitelist, fj.Whitelist, false)
-		if fj.Whitelist {
-			flags = filterRefreshAllowlists
-		}
-		nUpdated, _ := f.refreshFilters(flags, true)
 		// if at least 1 filter has been updated, refreshFilters() restarts the filtering automatically
 		// if not - we restart the filtering ourselves
 		restart = false
@@ -249,11 +245,11 @@ func (f *Filtering) handleFilteringSetURL(w http.ResponseWriter, r *http.Request
 	}
 
 	if restart {
-		enableFilters(true)
+		d.EnableFilters(true)
 	}
 }
 
-func (f *Filtering) handleFilteringSetRules(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringSetRules(w http.ResponseWriter, r *http.Request) {
 	// This use of ReadAll is safe, because request's body is now limited.
 	body, err := io.ReadAll(r.Body)
 	if err != nil {
@@ -262,12 +258,12 @@ func (f *Filtering) handleFilteringSetRules(w http.ResponseWriter, r *http.Reque
 		return
 	}
 
-	config.UserRules = strings.Split(string(body), "\n")
+	d.UserRules = strings.Split(string(body), "\n")
-	onConfigModified()
+	d.ConfigModified()
-	enableFilters(true)
+	d.EnableFilters(true)
 }
 
-func (f *Filtering) handleFilteringRefresh(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringRefresh(w http.ResponseWriter, r *http.Request) {
 	type Req struct {
 		White bool `json:"whitelist"`
 	}
@@ -285,35 +281,27 @@ func (f *Filtering) handleFilteringRefresh(w http.ResponseWriter, r *http.Reques
 		return
 	}
 
-	flags := filterRefreshBlocklists
+	var ok bool
-	if req.White {
+	resp.Updated, _, ok = d.tryRefreshFilters(!req.White, req.White, true)
-		flags = filterRefreshAllowlists
+	if !ok {
-	}
+		aghhttp.Error(
-	func() {
+			r,
-		// Temporarily unlock the Context.controlLock because the
+			w,
-		// f.refreshFilters waits for it to be unlocked but it's
+			http.StatusInternalServerError,
-		// actually locked in ensure wrapper.
+			"filters update procedure is already running",
-		//
+		)
-		// TODO(e.burkov):  Reconsider this messy syncing process.
-		Context.controlLock.Unlock()
-		defer Context.controlLock.Lock()
-
-		resp.Updated, err = f.refreshFilters(flags|filterRefreshForce, false)
-	}()
-	if err != nil {
-		aghhttp.Error(r, w, http.StatusInternalServerError, "%s", err)
 
 		return
 	}
 
-	js, err := json.Marshal(resp)
+	w.Header().Set("Content-Type", "application/json")
+
+	err = json.NewEncoder(w).Encode(resp)
 	if err != nil {
 		aghhttp.Error(r, w, http.StatusInternalServerError, "json encode: %s", err)
 
 		return
 	}
-	w.Header().Set("Content-Type", "application/json")
-	_, _ = w.Write(js)
 }
 
 type filterJSON struct {
@@ -333,7 +321,7 @@ type filteringConfig struct {
 	Enabled          bool         `json:"enabled"`
 }
 
-func filterToJSON(f filter) filterJSON {
+func filterToJSON(f FilterYAML) filterJSON {
 	fj := filterJSON{
 		ID:         f.ID,
 		Enabled:    f.Enabled,
@@ -350,21 +338,21 @@ func filterToJSON(f filter) filterJSON {
 }
 
 // Get filtering configuration
-func (f *Filtering) handleFilteringStatus(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringStatus(w http.ResponseWriter, r *http.Request) {
 	resp := filteringConfig{}
-	config.RLock()
+	d.filtersMu.RLock()
-	resp.Enabled = config.DNS.FilteringEnabled
+	resp.Enabled = d.FilteringEnabled
-	resp.Interval = config.DNS.FiltersUpdateIntervalHours
+	resp.Interval = d.FiltersUpdateIntervalHours
-	for _, f := range config.Filters {
+	for _, f := range d.Filters {
 		fj := filterToJSON(f)
 		resp.Filters = append(resp.Filters, fj)
 	}
-	for _, f := range config.WhitelistFilters {
+	for _, f := range d.WhitelistFilters {
 		fj := filterToJSON(f)
 		resp.WhitelistFilters = append(resp.WhitelistFilters, fj)
 	}
-	resp.UserRules = config.UserRules
+	resp.UserRules = d.UserRules
-	config.RUnlock()
+	d.filtersMu.RUnlock()
 
 	jsonVal, err := json.Marshal(resp)
 	if err != nil {
@@ -380,7 +368,7 @@ func (f *Filtering) handleFilteringStatus(w http.ResponseWriter, r *http.Request
 }
 
 // Set filtering configuration
-func (f *Filtering) handleFilteringConfig(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleFilteringConfig(w http.ResponseWriter, r *http.Request) {
 	req := filteringConfig{}
 	err := json.NewDecoder(r.Body).Decode(&req)
 	if err != nil {
@@ -389,22 +377,22 @@ func (f *Filtering) handleFilteringConfig(w http.ResponseWriter, r *http.Request
 		return
 	}
 
-	if !checkFiltersUpdateIntervalHours(req.Interval) {
+	if !ValidateUpdateIvl(req.Interval) {
 		aghhttp.Error(r, w, http.StatusBadRequest, "Unsupported interval")
 
 		return
 	}
 
 	func() {
-		config.Lock()
+		d.filtersMu.Lock()
-		defer config.Unlock()
+		defer d.filtersMu.Unlock()
 
-		config.DNS.FilteringEnabled = req.Enabled
+		d.FilteringEnabled = req.Enabled
-		config.DNS.FiltersUpdateIntervalHours = req.Interval
+		d.FiltersUpdateIntervalHours = req.Interval
 	}()
 
-	onConfigModified()
+	d.ConfigModified()
-	enableFilters(true)
+	d.EnableFilters(true)
 }
 
 type checkHostRespRule struct {
@@ -435,15 +423,15 @@ type checkHostResp struct {
 	FilterID int64 `json:"filter_id"`
 }
 
-func (f *Filtering) handleCheckHost(w http.ResponseWriter, r *http.Request) {
+func (d *DNSFilter) handleCheckHost(w http.ResponseWriter, r *http.Request) {
-	q := r.URL.Query()
+	host := r.URL.Query().Get("name")
-	host := q.Get("name")
 
-	setts := Context.dnsFilter.GetConfig()
+	setts := d.GetConfig()
 	setts.FilteringEnabled = true
 	setts.ProtectionEnabled = true
-	Context.dnsFilter.ApplyBlockedServices(&setts, nil, true)
+
-	result, err := Context.dnsFilter.CheckHost(host, dns.TypeA, &setts)
+	d.ApplyBlockedServices(&setts, nil)
+	result, err := d.CheckHost(host, dns.TypeA, &setts)
 	if err != nil {
 		aghhttp.Error(
 			r,
@@ -457,18 +445,20 @@ func (f *Filtering) handleCheckHost(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	resp := checkHostResp{}
+	rulesLen := len(result.Rules)
-	resp.Reason = result.Reason.String()
+	resp := checkHostResp{
-	resp.SvcName = result.ServiceName
+		Reason:    result.Reason.String(),
-	resp.CanonName = result.CanonName
+		SvcName:   result.ServiceName,
-	resp.IPList = result.IPList
+		CanonName: result.CanonName,
+		IPList:    result.IPList,
+		Rules:     make([]*checkHostRespRule, len(result.Rules)),
+	}
 
-	if len(result.Rules) > 0 {
+	if rulesLen > 0 {
 		resp.FilterID = result.Rules[0].FilterListID
 		resp.Rule = result.Rules[0].Text
 	}
 
-	resp.Rules = make([]*checkHostRespRule, len(result.Rules))
 	for i, r := range result.Rules {
 		resp.Rules[i] = &checkHostRespRule{
 			FilterListID: r.FilterListID,
@@ -476,28 +466,51 @@ func (f *Filtering) handleCheckHost(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	js, err := json.Marshal(resp)
-	if err != nil {
-		aghhttp.Error(r, w, http.StatusInternalServerError, "json encode: %s", err)
-
-		return
-	}
 	w.Header().Set("Content-Type", "application/json")
-	_, _ = w.Write(js)
+	err = json.NewEncoder(w).Encode(resp)
+	if err != nil {
+		aghhttp.Error(r, w, http.StatusInternalServerError, "encoding response: %s", err)
+	}
 }
 
 // RegisterFilteringHandlers - register handlers
-func (f *Filtering) RegisterFilteringHandlers() {
+func (d *DNSFilter) RegisterFilteringHandlers() {
-	httpRegister(http.MethodGet, "/control/filtering/status", f.handleFilteringStatus)
+	registerHTTP := d.HTTPRegister
-	httpRegister(http.MethodPost, "/control/filtering/config", f.handleFilteringConfig)
+	if registerHTTP == nil {
-	httpRegister(http.MethodPost, "/control/filtering/add_url", f.handleFilteringAddURL)
+		return
-	httpRegister(http.MethodPost, "/control/filtering/remove_url", f.handleFilteringRemoveURL)
+	}
-	httpRegister(http.MethodPost, "/control/filtering/set_url", f.handleFilteringSetURL)
+
-	httpRegister(http.MethodPost, "/control/filtering/refresh", f.handleFilteringRefresh)
+	registerHTTP(http.MethodPost, "/control/safebrowsing/enable", d.handleSafeBrowsingEnable)
-	httpRegister(http.MethodPost, "/control/filtering/set_rules", f.handleFilteringSetRules)
+	registerHTTP(http.MethodPost, "/control/safebrowsing/disable", d.handleSafeBrowsingDisable)
-	httpRegister(http.MethodGet, "/control/filtering/check_host", f.handleCheckHost)
+	registerHTTP(http.MethodGet, "/control/safebrowsing/status", d.handleSafeBrowsingStatus)
+
+	registerHTTP(http.MethodPost, "/control/parental/enable", d.handleParentalEnable)
+	registerHTTP(http.MethodPost, "/control/parental/disable", d.handleParentalDisable)
+	registerHTTP(http.MethodGet, "/control/parental/status", d.handleParentalStatus)
+
+	registerHTTP(http.MethodPost, "/control/safesearch/enable", d.handleSafeSearchEnable)
+	registerHTTP(http.MethodPost, "/control/safesearch/disable", d.handleSafeSearchDisable)
+	registerHTTP(http.MethodGet, "/control/safesearch/status", d.handleSafeSearchStatus)
+
+	registerHTTP(http.MethodGet, "/control/rewrite/list", d.handleRewriteList)
+	registerHTTP(http.MethodPost, "/control/rewrite/add", d.handleRewriteAdd)
+	registerHTTP(http.MethodPost, "/control/rewrite/delete", d.handleRewriteDelete)
+
+	registerHTTP(http.MethodGet, "/control/blocked_services/services", d.handleBlockedServicesAvailableServices)
+	registerHTTP(http.MethodGet, "/control/blocked_services/list", d.handleBlockedServicesList)
+	registerHTTP(http.MethodPost, "/control/blocked_services/set", d.handleBlockedServicesSet)
+
+	registerHTTP(http.MethodGet, "/control/filtering/status", d.handleFilteringStatus)
+	registerHTTP(http.MethodPost, "/control/filtering/config", d.handleFilteringConfig)
+	registerHTTP(http.MethodPost, "/control/filtering/add_url", d.handleFilteringAddURL)
+	registerHTTP(http.MethodPost, "/control/filtering/remove_url", d.handleFilteringRemoveURL)
+	registerHTTP(http.MethodPost, "/control/filtering/set_url", d.handleFilteringSetURL)
+	registerHTTP(http.MethodPost, "/control/filtering/refresh", d.handleFilteringRefresh)
+	registerHTTP(http.MethodPost, "/control/filtering/set_rules", d.handleFilteringSetRules)
+	registerHTTP(http.MethodGet, "/control/filtering/check_host", d.handleCheckHost)
 }
 
-func checkFiltersUpdateIntervalHours(i uint32) bool {
+// ValidateUpdateIvl returns false if i is not a valid filters update interval.
+func ValidateUpdateIvl(i uint32) bool {
 	return i == 0 || i == 1 || i == 12 || i == 1*24 || i == 3*24 || i == 7*24
 }

internal/filtering/dnsrewrite_test.go

@@ -49,7 +49,7 @@ func TestDNSFilter_CheckHostRules_dnsrewrite(t *testing.T) {
 |1.2.3.5.in-addr.arpa^$dnsrewrite=NOERROR;PTR;new-ptr-with-dot.
 `
 
-	f := newForTest(t, nil, []Filter{{ID: 0, Data: []byte(text)}})
+	f, _ := newForTest(t, nil, []Filter{{ID: 0, Data: []byte(text)}})
 	setts := &Settings{
 		FilteringEnabled: true,
 	}

internal/filtering/filter.go

@@ -1,4 +1,4 @@
-package home
+package filtering
 
 import (
 	"bufio"
@@ -8,63 +8,29 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"regexp"
 	"strconv"
 	"strings"
-	"sync"
-	"sync/atomic"
 	"time"
 
-	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/AdguardTeam/golibs/stringutil"
+	"golang.org/x/exp/slices"
 )
 
-var nextFilterID = time.Now().Unix() // semi-stable way to generate an unique ID
+// filterDir is the subdirectory of a data directory to store downloaded
+// filters.
+const filterDir = "filters"
 
-// Filtering - module object
+// nextFilterID is a way to seed a unique ID generation.
-type Filtering struct {
+//
-	// conf FilteringConf
+// TODO(e.burkov):  Use more deterministic approach.
-	refreshStatus     uint32 // 0:none; 1:in progress
+var nextFilterID = time.Now().Unix()
-	refreshLock       sync.Mutex
-	filterTitleRegexp *regexp.Regexp
-}
 
-// Init - initialize the module
+// FilterYAML respresents a filter list in the configuration file.
-func (f *Filtering) Init() {
+//
-	f.filterTitleRegexp = regexp.MustCompile(`^! Title: +(.*)$`)
+// TODO(e.burkov):  Investigate if the field oredering is important.
-	_ = os.MkdirAll(filepath.Join(Context.getDataDir(), filterDir), 0o755)
+type FilterYAML struct {
-	f.loadFilters(config.Filters)
-	f.loadFilters(config.WhitelistFilters)
-	deduplicateFilters()
-	updateUniqueFilterID(config.Filters)
-	updateUniqueFilterID(config.WhitelistFilters)
-}
-
-// Start - start the module
-func (f *Filtering) Start() {
-	f.RegisterFilteringHandlers()
-
-	// Here we should start updating filters,
-	//  but currently we can't wake up the periodic task to do so.
-	// So for now we just start this periodic task from here.
-	go f.periodicallyRefreshFilters()
-}
-
-// Close - close the module
-func (f *Filtering) Close() {
-}
-
-func defaultFilters() []filter {
-	return []filter{
-		{Filter: filtering.Filter{ID: 1}, Enabled: true, URL: "https://adguardteam.github.io/AdGuardSDNSFilter/Filters/filter.txt", Name: "AdGuard DNS filter"},
-		{Filter: filtering.Filter{ID: 2}, Enabled: false, URL: "https://adaway.org/hosts.txt", Name: "AdAway Default Blocklist"},
-	}
-}
-
-// field ordering is important -- yaml fields will mirror ordering from here
-type filter struct {
 	Enabled     bool
 	URL         string    // URL or a file path
 	Name        string    `yaml:"name"`
@@ -73,44 +39,58 @@ type filter struct {
 	checksum    uint32    // checksum of the file data
 	white       bool
 
-	filtering.Filter `yaml:",inline"`
+	Filter `yaml:",inline"`
+}
+
+// Clear filter rules
+func (filter *FilterYAML) unload() {
+	filter.RulesCount = 0
+	filter.checksum = 0
+}
+
+// Path to the filter contents
+func (filter *FilterYAML) Path(dataDir string) string {
+	return filepath.Join(dataDir, filterDir, strconv.FormatInt(filter.ID, 10)+".txt")
 }
 
 const (
-	statusFound          = 1
+	statusFound = 1 << iota
-	statusEnabledChanged = 2
+	statusEnabledChanged
-	statusURLChanged     = 4
+	statusURLChanged
-	statusURLExists      = 8
+	statusURLExists
-	statusUpdateRequired = 0x10
+	statusUpdateRequired
 )
 
 // Update properties for a filter specified by its URL
 // Return status* flags.
-func (f *Filtering) filterSetProperties(url string, newf filter, whitelist bool) int {
+func (d *DNSFilter) filterSetProperties(url string, newf FilterYAML, whitelist bool) int {
 	r := 0
-	config.Lock()
+	d.filtersMu.Lock()
-	defer config.Unlock()
+	defer d.filtersMu.Unlock()
 
-	filters := &config.Filters
+	filters := d.Filters
 	if whitelist {
-		filters = &config.WhitelistFilters
+		filters = d.WhitelistFilters
 	}
 
-	for i := range *filters {
+	i := slices.IndexFunc(filters, func(filt FilterYAML) bool {
-		filt := &(*filters)[i]
+		return filt.URL == url
-		if filt.URL != url {
+	})
-			continue
+	if i == -1 {
+		return 0
 	}
 
-		log.Debug("filter: set properties: %s: {%s %s %v}",
+	filt := &filters[i]
-			filt.URL, newf.Name, newf.URL, newf.Enabled)
+
+	log.Debug("filter: set properties: %s: {%s %s %v}", filt.URL, newf.Name, newf.URL, newf.Enabled)
 	filt.Name = newf.Name
 
 	if filt.URL != newf.URL {
 		r |= statusURLChanged | statusUpdateRequired
-			if filterExistsNoLock(newf.URL) {
+		if d.filterExistsNoLock(newf.URL) {
 			return statusURLExists
 		}
+
 		filt.URL = newf.URL
 		filt.unload()
 		filt.LastUpdated = time.Time{}
@@ -123,10 +103,13 @@ func (f *Filtering) filterSetProperties(url string, newf filter, whitelist bool)
 		filt.Enabled = newf.Enabled
 		if filt.Enabled {
 			if (r & statusURLChanged) == 0 {
-					e := f.load(filt)
+				err := d.load(filt)
-					if e != nil {
+				if err != nil {
-						// This isn't a fatal error,
+					// TODO(e.burkov):  It seems the error is only returned when
-						//  because it may occur when someone removes the file from disk.
+					// the file exists and couldn't be open.  Investigate and
+					// improve.
+					log.Error("loading filter %d: %s", filt.ID, err)
+
 					filt.LastUpdated = time.Time{}
 					filt.checksum = 0
 					filt.RulesCount = 0
@@ -139,25 +122,25 @@ func (f *Filtering) filterSetProperties(url string, newf filter, whitelist bool)
 	}
 
 	return r | statusFound
-	}
-	return 0
 }
 
 // Return TRUE if a filter with this URL exists
-func filterExists(url string) bool {
+func (d *DNSFilter) filterExists(url string) bool {
-	config.RLock()
+	d.filtersMu.RLock()
-	r := filterExistsNoLock(url)
+	defer d.filtersMu.RUnlock()
-	config.RUnlock()
+
+	r := d.filterExistsNoLock(url)
+
 	return r
 }
 
-func filterExistsNoLock(url string) bool {
+func (d *DNSFilter) filterExistsNoLock(url string) bool {
-	for _, f := range config.Filters {
+	for _, f := range d.Filters {
 		if f.URL == url {
 			return true
 		}
 	}
-	for _, f := range config.WhitelistFilters {
+	for _, f := range d.WhitelistFilters {
 		if f.URL == url {
 			return true
 		}
@@ -167,26 +150,26 @@ func filterExistsNoLock(url string) bool {
 
 // Add a filter
 // Return FALSE if a filter with this URL exists
-func filterAdd(f filter) bool {
+func (d *DNSFilter) filterAdd(flt FilterYAML) bool {
-	config.Lock()
+	d.filtersMu.Lock()
-	defer config.Unlock()
+	defer d.filtersMu.Unlock()
 
 	// Check for duplicates
-	if filterExistsNoLock(f.URL) {
+	if d.filterExistsNoLock(flt.URL) {
 		return false
 	}
 
-	if f.white {
+	if flt.white {
-		config.WhitelistFilters = append(config.WhitelistFilters, f)
+		d.WhitelistFilters = append(d.WhitelistFilters, flt)
 	} else {
-		config.Filters = append(config.Filters, f)
+		d.Filters = append(d.Filters, flt)
 	}
 	return true
 }
 
 // Load filters from the disk
 // And if any filter has zero ID, assign a new one
-func (f *Filtering) loadFilters(array []filter) {
+func (d *DNSFilter) loadFilters(array []FilterYAML) {
 	for i := range array {
 		filter := &array[i] // otherwise we're operating on a copy
 		if filter.ID == 0 {
@@ -198,32 +181,30 @@ func (f *Filtering) loadFilters(array []filter) {
 			continue
 		}
 
-		err := f.load(filter)
+		err := d.load(filter)
 		if err != nil {
 			log.Error("Couldn't load filter %d contents due to %s", filter.ID, err)
 		}
 	}
 }
 
-func deduplicateFilters() {
+func deduplicateFilters(filters []FilterYAML) (deduplicated []FilterYAML) {
-	// Deduplicate filters
+	urls := stringutil.NewSet()
-	i := 0 // output index, used for deletion later
+	lastIdx := 0
-	urls := map[string]bool{}
+
-	for _, filter := range config.Filters {
+	for _, filter := range filters {
-		if _, ok := urls[filter.URL]; !ok {
+		if !urls.Has(filter.URL) {
-			// we didn't see it before, keep it
+			urls.Add(filter.URL)
-			urls[filter.URL] = true // remember the URL
+			filters[lastIdx] = filter
-			config.Filters[i] = filter
+			lastIdx++
-			i++
 		}
 	}
 
-	// all entries we want to keep are at front, delete the rest
+	return filters[:lastIdx]
-	config.Filters = config.Filters[:i]
 }
 
 // Set the next filter ID to max(filter.ID) + 1
-func updateUniqueFilterID(filters []filter) {
+func updateUniqueFilterID(filters []FilterYAML) {
 	for _, filter := range filters {
 		if nextFilterID < filter.ID {
 			nextFilterID = filter.ID + 1
@@ -238,22 +219,19 @@ func assignUniqueFilterID() int64 {
 }
 
 // Sets up a timer that will be checking for filters updates periodically
-func (f *Filtering) periodicallyRefreshFilters() {
+func (d *DNSFilter) periodicallyRefreshFilters() {
 	const maxInterval = 1 * 60 * 60
 	intval := 5 // use a dynamically increasing time interval
 	for {
-		isNetworkErr := false
+		isNetErr, ok := false, false
-		if config.DNS.FiltersUpdateIntervalHours != 0 && atomic.CompareAndSwapUint32(&f.refreshStatus, 0, 1) {
+		if d.FiltersUpdateIntervalHours != 0 {
-			f.refreshLock.Lock()
+			_, isNetErr, ok = d.tryRefreshFilters(true, true, false)
-			_, isNetworkErr = f.refreshFiltersIfNecessary(filterRefreshBlocklists | filterRefreshAllowlists)
+			if ok && !isNetErr {
-			f.refreshLock.Unlock()
-			f.refreshStatus = 0
-			if !isNetworkErr {
 				intval = maxInterval
 			}
 		}
 
-		if isNetworkErr {
+		if isNetErr {
 			intval *= 2
 			if intval > maxInterval {
 				intval = maxInterval
@@ -264,51 +242,73 @@ func (f *Filtering) periodicallyRefreshFilters() {
 	}
 }
 
-// Refresh filters
+// tryRefreshFilters is like [refreshFilters], but backs down if the update is
-// flags: filterRefresh*
+// already going on.
-// important:
 //
-// TRUE: ignore the fact that we're currently updating the filters
+// TODO(e.burkov):  Get rid of the concurrency pattern which requires the
-func (f *Filtering) refreshFilters(flags int, important bool) (int, error) {
+// sync.Mutex.TryLock.
-	set := atomic.CompareAndSwapUint32(&f.refreshStatus, 0, 1)
+func (d *DNSFilter) tryRefreshFilters(block, allow, force bool) (updated int, isNetworkErr, ok bool) {
-	if !important && !set {
+	if ok = d.refreshLock.TryLock(); !ok {
-		return 0, fmt.Errorf("filters update procedure is already running")
+		return 0, false, ok
 	}
+	defer d.refreshLock.Unlock()
 
-	f.refreshLock.Lock()
+	updated, isNetworkErr = d.refreshFiltersIntl(block, allow, force)
-	nUpdated, _ := f.refreshFiltersIfNecessary(flags)
+
-	f.refreshLock.Unlock()
+	return updated, isNetworkErr, ok
-	f.refreshStatus = 0
-	return nUpdated, nil
 }
 
-func (f *Filtering) refreshFiltersArray(filters *[]filter, force bool) (int, []filter, []bool, bool) {
+// refreshFilters updates the lists and returns the number of updated ones.
-	var updateFilters []filter
+// It's safe for concurrent use, but blocks at least until the previous
+// refreshing is finished.
+func (d *DNSFilter) refreshFilters(block, allow, force bool) (updated int) {
+	d.refreshLock.Lock()
+	defer d.refreshLock.Unlock()
+
+	updated, _ = d.refreshFiltersIntl(block, allow, force)
+
+	return updated
+}
+
+// listsToUpdate returns the slice of filter lists that could be updated.
+func (d *DNSFilter) listsToUpdate(filters *[]FilterYAML, force bool) (toUpd []FilterYAML) {
+	now := time.Now()
+
+	d.filtersMu.RLock()
+	defer d.filtersMu.RUnlock()
+
+	for i := range *filters {
+		flt := &(*filters)[i] // otherwise we will be operating on a copy
+		log.Debug("checking list at index %d: %v", i, flt)
+
+		if !flt.Enabled {
+			continue
+		}
+
+		if !force {
+			exp := flt.LastUpdated.Add(time.Duration(d.FiltersUpdateIntervalHours) * time.Hour)
+			if now.Before(exp) {
+				continue
+			}
+		}
+
+		toUpd = append(toUpd, FilterYAML{
+			Filter: Filter{
+				ID: flt.ID,
+			},
+			URL:      flt.URL,
+			Name:     flt.Name,
+			checksum: flt.checksum,
+		})
+	}
+
+	return toUpd
+}
+
+func (d *DNSFilter) refreshFiltersArray(filters *[]FilterYAML, force bool) (int, []FilterYAML, []bool, bool) {
 	var updateFlags []bool // 'true' if filter data has changed
 
-	now := time.Now()
+	updateFilters := d.listsToUpdate(filters, force)
-	config.RLock()
-	for i := range *filters {
-		f := &(*filters)[i] // otherwise we will be operating on a copy
-
-		if !f.Enabled {
-			continue
-		}
-
-		expireTime := f.LastUpdated.Unix() + int64(config.DNS.FiltersUpdateIntervalHours)*60*60
-		if !force && expireTime > now.Unix() {
-			continue
-		}
-
-		var uf filter
-		uf.ID = f.ID
-		uf.URL = f.URL
-		uf.Name = f.Name
-		uf.checksum = f.checksum
-		updateFilters = append(updateFilters, uf)
-	}
-	config.RUnlock()
-
 	if len(updateFilters) == 0 {
 		return 0, nil, nil, false
 	}
@@ -316,7 +316,7 @@ func (f *Filtering) refreshFiltersArray(filters *[]filter, force bool) (int, []f
 	nfail := 0
 	for i := range updateFilters {
 		uf := &updateFilters[i]
-		updated, err := f.update(uf)
+		updated, err := d.update(uf)
 		updateFlags = append(updateFlags, updated)
 		if err != nil {
 			nfail++
@@ -334,7 +334,7 @@ func (f *Filtering) refreshFiltersArray(filters *[]filter, force bool) (int, []f
 		uf := &updateFilters[i]
 		updated := updateFlags[i]
 
-		config.Lock()
+		d.filtersMu.Lock()
 		for k := range *filters {
 			f := &(*filters)[k]
 			if f.ID != uf.ID || f.URL != uf.URL {
@@ -352,20 +352,14 @@ func (f *Filtering) refreshFiltersArray(filters *[]filter, force bool) (int, []f
 			f.checksum = uf.checksum
 			updateCount++
 		}
-		config.Unlock()
+		d.filtersMu.Unlock()
 	}
 
 	return updateCount, updateFilters, updateFlags, false
 }
 
-const (
+// refreshFiltersIntl checks filters and updates them if necessary.  If force is
-	filterRefreshForce      = 1 // ignore last file modification date
+// true, it ignores the filter.LastUpdated field value.
-	filterRefreshAllowlists = 2 // update allow-lists
-	filterRefreshBlocklists = 4 // update block-lists
-)
-
-// refreshFiltersIfNecessary checks filters and updates them if necessary.  If
-// force is true, it ignores the filter.LastUpdated field value.
 //
 // Algorithm:
 //
@@ -378,53 +372,49 @@ const (
 //     that this method works only on Unix systems.  On Windows, don't pass
 //     files to filtering, pass the whole data.
 //
-// refreshFiltersIfNecessary returns the number of updated filters.  It also
+// refreshFiltersIntl returns the number of updated filters.  It also returns
-// returns true if there was a network error and nothing could be updated.
+// true if there was a network error and nothing could be updated.
 //
 // TODO(a.garipov, e.burkov): What the hell?
-func (f *Filtering) refreshFiltersIfNecessary(flags int) (int, bool) {
+func (d *DNSFilter) refreshFiltersIntl(block, allow, force bool) (int, bool) {
-	log.Debug("Filters: updating...")
+	log.Debug("filtering: updating...")
 
-	updateCount := 0
+	updNum := 0
-	var updateFilters []filter
+	var lists []FilterYAML
-	var updateFlags []bool
+	var toUpd []bool
-	netError := false
+	isNetErr := false
-	netErrorW := false
+
-	force := false
+	if block {
-	if (flags & filterRefreshForce) != 0 {
+		updNum, lists, toUpd, isNetErr = d.refreshFiltersArray(&d.Filters, force)
-		force = true
 	}
-	if (flags & filterRefreshBlocklists) != 0 {
+	if allow {
-		updateCount, updateFilters, updateFlags, netError = f.refreshFiltersArray(&config.Filters, force)
+		updNumAl, listsAl, toUpdAl, isNetErrAl := d.refreshFiltersArray(&d.WhitelistFilters, force)
+
+		updNum += updNumAl
+		lists = append(lists, listsAl...)
+		toUpd = append(toUpd, toUpdAl...)
+		isNetErr = isNetErr || isNetErrAl
 	}
-	if (flags & filterRefreshAllowlists) != 0 {
+	if isNetErr {
-		updateCountW := 0
-		var updateFiltersW []filter
-		var updateFlagsW []bool
-		updateCountW, updateFiltersW, updateFlagsW, netErrorW = f.refreshFiltersArray(&config.WhitelistFilters, force)
-		updateCount += updateCountW
-		updateFilters = append(updateFilters, updateFiltersW...)
-		updateFlags = append(updateFlags, updateFlagsW...)
-	}
-	if netError && netErrorW {
 		return 0, true
 	}
 
-	if updateCount != 0 {
+	if updNum != 0 {
-		enableFilters(false)
+		d.EnableFilters(false)
 
-		for i := range updateFilters {
+		for i := range lists {
-			uf := &updateFilters[i]
+			uf := &lists[i]
-			updated := updateFlags[i]
+			updated := toUpd[i]
 			if !updated {
 				continue
 			}
-			_ = os.Remove(uf.Path() + ".old")
+			_ = os.Remove(uf.Path(d.DataDir) + ".old")
 		}
 	}
 
-	log.Debug("Filters: update finished")
+	log.Debug("filtering: update finished")
-	return updateCount, false
+
+	return updNum, false
 }
 
 // Allows printable UTF-8 text with CR, LF, TAB characters
@@ -440,7 +430,7 @@ func isPrintableText(data []byte, len int) bool {
 }
 
 // A helper function that parses filter contents and returns a number of rules and a filter name (if there's any)
-func (f *Filtering) parseFilterContents(file io.Reader) (int, uint32, string) {
+func (d *DNSFilter) parseFilterContents(file io.Reader) (int, uint32, string) {
 	rulesCount := 0
 	name := ""
 	seenTitle := false
@@ -455,7 +445,7 @@ func (f *Filtering) parseFilterContents(file io.Reader) (int, uint32, string) {
 		if len(line) == 0 {
 			//
 		} else if line[0] == '!' {
-			m := f.filterTitleRegexp.FindAllStringSubmatch(line, -1)
+			m := d.filterTitleRegexp.FindAllStringSubmatch(line, -1)
 			if len(m) > 0 && len(m[0]) >= 2 && !seenTitle {
 				name = m[0][1]
 				seenTitle = true
@@ -476,11 +466,11 @@ func (f *Filtering) parseFilterContents(file io.Reader) (int, uint32, string) {
 }
 
 // Perform upgrade on a filter and update LastUpdated value
-func (f *Filtering) update(filter *filter) (bool, error) {
+func (d *DNSFilter) update(filter *FilterYAML) (bool, error) {
-	b, err := f.updateIntl(filter)
+	b, err := d.updateIntl(filter)
 	filter.LastUpdated = time.Now()
 	if !b {
-		e := os.Chtimes(filter.Path(), filter.LastUpdated, filter.LastUpdated)
+		e := os.Chtimes(filter.Path(d.DataDir), filter.LastUpdated, filter.LastUpdated)
 		if e != nil {
 			log.Error("os.Chtimes(): %v", e)
 		}
@@ -488,7 +478,7 @@ func (f *Filtering) update(filter *filter) (bool, error) {
 	return b, err
 }
 
-func (f *Filtering) read(reader io.Reader, tmpFile *os.File, filter *filter) (int, error) {
+func (d *DNSFilter) read(reader io.Reader, tmpFile *os.File, filter *FilterYAML) (int, error) {
 	htmlTest := true
 	firstChunk := make([]byte, 4*1024)
 	firstChunkLen := 0
@@ -539,20 +529,20 @@ func (f *Filtering) read(reader io.Reader, tmpFile *os.File, filter *filter) (in
 // finalizeUpdate closes and gets rid of temporary file f with filter's content
 // according to updated.  It also saves new values of flt's name, rules number
 // and checksum if sucсeeded.
-func finalizeUpdate(
+func (d *DNSFilter) finalizeUpdate(
-	f *os.File,
+	file *os.File,
-	flt *filter,
+	flt *FilterYAML,
 	updated bool,
 	name string,
 	rnum int,
 	cs uint32,
 ) (err error) {
-	tmpFileName := f.Name()
+	tmpFileName := file.Name()
 
 	// Close the file before renaming it because it's required on Windows.
 	//
 	// See https://github.com/adguardTeam/adGuardHome/issues/1553.
-	if err = f.Close(); err != nil {
+	if err = file.Close(); err != nil {
 		return fmt.Errorf("closing temporary file: %w", err)
 	}
 
@@ -562,9 +552,9 @@ func finalizeUpdate(
 		return os.Remove(tmpFileName)
 	}
 
-	log.Printf("saving filter %d contents to: %s", flt.ID, flt.Path())
+	log.Printf("saving filter %d contents to: %s", flt.ID, flt.Path(d.DataDir))
 
-	if err = os.Rename(tmpFileName, flt.Path()); err != nil {
+	if err = os.Rename(tmpFileName, flt.Path(d.DataDir)); err != nil {
 		return errors.WithDeferred(err, os.Remove(tmpFileName))
 	}
 
@@ -578,12 +568,12 @@ func finalizeUpdate(
 // processUpdate copies filter's content from src to dst and returns the name,
 // rules number, and checksum for it.  It also returns the number of bytes read
 // from src.
-func (f *Filtering) processUpdate(
+func (d *DNSFilter) processUpdate(
 	src io.Reader,
 	dst *os.File,
-	flt *filter,
+	flt *FilterYAML,
 ) (name string, rnum int, cs uint32, n int, err error) {
-	if n, err = f.read(src, dst, flt); err != nil {
+	if n, err = d.read(src, dst, flt); err != nil {
 		return "", 0, 0, 0, err
 	}
 
@@ -591,14 +581,14 @@ func (f *Filtering) processUpdate(
 		return "", 0, 0, 0, err
 	}
 
-	rnum, cs, name = f.parseFilterContents(dst)
+	rnum, cs, name = d.parseFilterContents(dst)
 
 	return name, rnum, cs, n, nil
 }
 
 // updateIntl updates the flt rewriting it's actual file.  It returns true if
 // the actual update has been performed.
-func (f *Filtering) updateIntl(flt *filter) (ok bool, err error) {
+func (d *DNSFilter) updateIntl(flt *FilterYAML) (ok bool, err error) {
 	log.Tracef("downloading update for filter %d from %s", flt.ID, flt.URL)
 
 	var name string
@@ -606,12 +596,12 @@ func (f *Filtering) updateIntl(flt *filter) (ok bool, err error) {
 	var cs uint32
 
 	var tmpFile *os.File
-	tmpFile, err = os.CreateTemp(filepath.Join(Context.getDataDir(), filterDir), "")
+	tmpFile, err = os.CreateTemp(filepath.Join(d.DataDir, filterDir), "")
 	if err != nil {
 		return false, err
 	}
 	defer func() {
-		err = errors.WithDeferred(err, finalizeUpdate(tmpFile, flt, ok, name, rnum, cs))
+		err = errors.WithDeferred(err, d.finalizeUpdate(tmpFile, flt, ok, name, rnum, cs))
 		ok = ok && err == nil
 		if ok {
 			log.Printf("updated filter %d: %d bytes, %d rules", flt.ID, n, rnum)
@@ -638,7 +628,7 @@ func (f *Filtering) updateIntl(flt *filter) (ok bool, err error) {
 		r = file
 	} else {
 		var resp *http.Response
-		resp, err = Context.client.Get(flt.URL)
+		resp, err = d.HTTPClient.Get(flt.URL)
 		if err != nil {
 			log.Printf("requesting filter from %s, skip: %s", flt.URL, err)
 
@@ -655,16 +645,16 @@ func (f *Filtering) updateIntl(flt *filter) (ok bool, err error) {
 		r = resp.Body
 	}
 
-	name, rnum, cs, n, err = f.processUpdate(r, tmpFile, flt)
+	name, rnum, cs, n, err = d.processUpdate(r, tmpFile, flt)
 
 	return cs != flt.checksum, err
 }
 
 // loads filter contents from the file in dataDir
-func (f *Filtering) load(filter *filter) (err error) {
+func (d *DNSFilter) load(filter *FilterYAML) (err error) {
-	filterFilePath := filter.Path()
+	filterFilePath := filter.Path(d.DataDir)
 
-	log.Tracef("filtering: loading filter %d contents to: %s", filter.ID, filterFilePath)
+	log.Tracef("filtering: loading filter %d from %s", filter.ID, filterFilePath)
 
 	file, err := os.Open(filterFilePath)
 	if errors.Is(err, os.ErrNotExist) {
@@ -682,7 +672,7 @@ func (f *Filtering) load(filter *filter) (err error) {
 
 	log.Tracef("filtering: File %s, id %d, length %d", filterFilePath, filter.ID, st.Size())
 
-	rulesCount, checksum, _ := f.parseFilterContents(file)
+	rulesCount, checksum, _ := d.parseFilterContents(file)
 
 	filter.RulesCount = rulesCount
 	filter.checksum = checksum
@@ -691,56 +681,45 @@ func (f *Filtering) load(filter *filter) (err error) {
 	return nil
 }
 
-// Clear filter rules
+func (d *DNSFilter) EnableFilters(async bool) {
-func (filter *filter) unload() {
+	d.filtersMu.RLock()
-	filter.RulesCount = 0
+	defer d.filtersMu.RUnlock()
-	filter.checksum = 0
+
+	d.enableFiltersLocked(async)
 }
 
-// Path to the filter contents
+func (d *DNSFilter) enableFiltersLocked(async bool) {
-func (filter *filter) Path() string {
+	filters := []Filter{{
-	return filepath.Join(Context.getDataDir(), filterDir, strconv.FormatInt(filter.ID, 10)+".txt")
+		ID:   CustomListID,
-}
+		Data: []byte(strings.Join(d.UserRules, "\n")),
-
-func enableFilters(async bool) {
-	config.RLock()
-	defer config.RUnlock()
-
-	enableFiltersLocked(async)
-}
-
-func enableFiltersLocked(async bool) {
-	filters := []filtering.Filter{{
-		ID:   filtering.CustomListID,
-		Data: []byte(strings.Join(config.UserRules, "\n")),
 	}}
 
-	for _, filter := range config.Filters {
+	for _, filter := range d.Filters {
 		if !filter.Enabled {
 			continue
 		}
 
-		filters = append(filters, filtering.Filter{
+		filters = append(filters, Filter{
 			ID:       filter.ID,
-			FilePath: filter.Path(),
+			FilePath: filter.Path(d.DataDir),
 		})
 	}
 
-	var allowFilters []filtering.Filter
+	var allowFilters []Filter
-	for _, filter := range config.WhitelistFilters {
+	for _, filter := range d.WhitelistFilters {
 		if !filter.Enabled {
 			continue
 		}
 
-		allowFilters = append(allowFilters, filtering.Filter{
+		allowFilters = append(allowFilters, Filter{
 			ID:       filter.ID,
-			FilePath: filter.Path(),
+			FilePath: filter.Path(d.DataDir),
 		})
 	}
 
-	if err := Context.dnsFilter.SetFilters(filters, allowFilters, async); err != nil {
+	if err := d.SetFilters(filters, allowFilters, async); err != nil {
 		log.Debug("enabling filters: %s", err)
 	}
 
-	Context.dnsFilter.SetEnabled(config.DNS.FilteringEnabled)
+	d.SetEnabled(d.FilteringEnabled)
 }

internal/filtering/filter_test.go

@@ -1,4 +1,4 @@
-package home
+package filtering
 
 import (
 	"io/fs"
@@ -51,15 +51,17 @@ func TestFilters(t *testing.T) {
 
 	l := testStartFilterListener(t, &fltContent)
 
-	Context = homeContext{
+	tempDir := t.TempDir()
-		workDir: t.TempDir(),
+
-		client: &http.Client{
+	filters, err := New(&Config{
+		DataDir: tempDir,
+		HTTPClient: &http.Client{
 			Timeout: 5 * time.Second,
 		},
-	}
+	}, nil)
-	Context.filters.Init()
+	require.NoError(t, err)
 
-	f := &filter{
+	f := &FilterYAML{
 		URL: (&url.URL{
 			Scheme: "http",
 			Host: (&netutil.IPPort{
@@ -71,21 +73,22 @@ func TestFilters(t *testing.T) {
 	}
 
 	updateAndAssert := func(t *testing.T, want require.BoolAssertionFunc, wantRulesCount int) {
-		ok, err := Context.filters.update(f)
+		var ok bool
+		ok, err = filters.update(f)
 		require.NoError(t, err)
 		want(t, ok)
 
 		assert.Equal(t, wantRulesCount, f.RulesCount)
 
 		var dir []fs.DirEntry
-		dir, err = os.ReadDir(filepath.Join(Context.getDataDir(), filterDir))
+		dir, err = os.ReadDir(filepath.Join(tempDir, filterDir))
 		require.NoError(t, err)
 
 		assert.Len(t, dir, 1)
 
-		require.FileExists(t, f.Path())
+		require.FileExists(t, f.Path(tempDir))
 
-		err = Context.filters.load(f)
+		err = filters.load(f)
 		require.NoError(t, err)
 	}
 
@@ -105,11 +108,9 @@ func TestFilters(t *testing.T) {
 	})
 
 	t.Run("load_unload", func(t *testing.T) {
-		err := Context.filters.load(f)
+		err = filters.load(f)
 		require.NoError(t, err)
 
 		f.unload()
 	})
-
-	require.NoError(t, os.Remove(f.Path()))
 }

internal/filtering/filtering.go

@@ -6,7 +6,10 @@ import (
 	"fmt"
 	"io/fs"
 	"net"
+	"net/http"
 	"os"
+	"path/filepath"
+	"regexp"
 	"runtime"
 	"runtime/debug"
 	"strings"
@@ -24,6 +27,7 @@ import (
 	"github.com/AdguardTeam/urlfilter/filterlist"
 	"github.com/AdguardTeam/urlfilter/rules"
 	"github.com/miekg/dns"
+	"golang.org/x/exp/slices"
 )
 
 // The IDs of built-in filter lists.
@@ -69,8 +73,13 @@ type Config struct {
 	// enabled is used to be returned within Settings.
 	//
 	// It is of type uint32 to be accessed by atomic.
+	//
+	// TODO(e.burkov):  Use atomic.Bool in Go 1.19.
 	enabled uint32
 
+	FilteringEnabled           bool   `yaml:"filtering_enabled"`       // whether or not use filter lists
+	FiltersUpdateIntervalHours uint32 `yaml:"filters_update_interval"` // time period to update filters (in hours)
+
 	ParentalEnabled     bool `yaml:"parental_enabled"`
 	SafeSearchEnabled   bool `yaml:"safesearch_enabled"`
 	SafeBrowsingEnabled bool `yaml:"safebrowsing_enabled"`
@@ -98,6 +107,24 @@ type Config struct {
 
 	// CustomResolver is the resolver used by DNSFilter.
 	CustomResolver Resolver `yaml:"-"`
+
+	// HTTPClient is the client to use for updating the remote filters.
+	HTTPClient *http.Client `yaml:"-"`
+
+	// DataDir is used to store filters' contents.
+	DataDir string `yaml:"-"`
+
+	// filtersMu protects filter lists.
+	filtersMu *sync.RWMutex
+
+	// Filters are the blocking filter lists.
+	Filters []FilterYAML `yaml:"-"`
+
+	// WhitelistFilters are the allowing filter lists.
+	WhitelistFilters []FilterYAML `yaml:"-"`
+
+	// UserRules is the global list of custom rules.
+	UserRules []string `yaml:"-"`
 }
 
 // LookupStats store stats collected during safebrowsing or parental checks
@@ -130,8 +157,10 @@ type hostChecker struct {
 type DNSFilter struct {
 	rulesStorage    *filterlist.RuleStorage
 	filteringEngine *urlfilter.DNSEngine
+
 	rulesStorageAllow    *filterlist.RuleStorage
 	filteringEngineAllow *urlfilter.DNSEngine
+
 	engineLock sync.RWMutex
 
 	parentalServer       string // access via methods
@@ -156,6 +185,12 @@ type DNSFilter struct {
 	// TODO(e.burkov): Use upstream that configured in dnsforward instead.
 	resolver Resolver
 
+	refreshLock *sync.Mutex
+
+	// filterTitleRegexp is the regular expression to retrieve a name of a
+	// filter list.
+	filterTitleRegexp *regexp.Regexp
+
 	hostCheckers []hostChecker
 }
 
@@ -168,7 +203,7 @@ type Filter struct {
 	Data []byte `yaml:"-"`
 
 	// ID is automatically assigned when filter is added using nextFilterID.
-	ID int64
+	ID int64 `yaml:"id"`
 }
 
 // Reason holds an enum detailing why it was filtered or not filtered
@@ -245,15 +280,7 @@ func (r Reason) String() string {
 }
 
 // In returns true if reasons include r.
-func (r Reason) In(reasons ...Reason) (ok bool) {
+func (r Reason) In(reasons ...Reason) (ok bool) { return slices.Contains(reasons, r) }
-	for _, reason := range reasons {
-		if r == reason {
-			return true
-		}
-	}
-
-	return false
-}
 
 // SetEnabled sets the status of the *DNSFilter.
 func (d *DNSFilter) SetEnabled(enabled bool) {
@@ -261,6 +288,7 @@ func (d *DNSFilter) SetEnabled(enabled bool) {
 	if enabled {
 		i = 1
 	}
+
 	atomic.StoreUint32(&d.enabled, uint32(i))
 }
 
@@ -279,11 +307,20 @@ func (d *DNSFilter) GetConfig() (s Settings) {
 
 // WriteDiskConfig - write configuration
 func (d *DNSFilter) WriteDiskConfig(c *Config) {
+	func() {
 		d.confLock.Lock()
 		defer d.confLock.Unlock()
 
 		*c = d.Config
 		c.Rewrites = cloneRewrites(c.Rewrites)
+	}()
+
+	d.filtersMu.RLock()
+	defer d.filtersMu.RUnlock()
+
+	c.Filters = slices.Clone(d.Filters)
+	c.WhitelistFilters = slices.Clone(d.WhitelistFilters)
+	c.UserRules = slices.Clone(d.UserRules)
 }
 
 // cloneRewrites returns a deep copy of entries.
@@ -309,6 +346,8 @@ func (d *DNSFilter) SetFilters(blockFilters, allowFilters []Filter, async bool)
 		}
 
 		d.filtersInitializerLock.Lock() // prevent multiple writers from adding more than 1 task
+		defer d.filtersInitializerLock.Unlock()
+
 		// remove all pending tasks
 		stop := false
 		for !stop {
@@ -321,7 +360,6 @@ func (d *DNSFilter) SetFilters(blockFilters, allowFilters []Filter, async bool)
 		}
 
 		d.filtersInitializerChan <- params
-		d.filtersInitializerLock.Unlock()
 		return nil
 	}
 
@@ -350,22 +388,19 @@ func (d *DNSFilter) filtersInitializer() {
 func (d *DNSFilter) Close() {
 	d.engineLock.Lock()
 	defer d.engineLock.Unlock()
+
 	d.reset()
 }
 
 func (d *DNSFilter) reset() {
-	var err error
-
 	if d.rulesStorage != nil {
-		err = d.rulesStorage.Close()
+		if err := d.rulesStorage.Close(); err != nil {
-		if err != nil {
 			log.Error("filtering: rulesStorage.Close: %s", err)
 		}
 	}
 
 	if d.rulesStorageAllow != nil {
-		err = d.rulesStorageAllow.Close()
+		if err := d.rulesStorageAllow.Close(); err != nil {
-		if err != nil {
 			log.Error("filtering: rulesStorageAllow.Close: %s", err)
 		}
 	}
@@ -885,12 +920,14 @@ func InitModule() {
 	initBlockedServices()
 }
 
-// New creates properly initialized DNS Filter that is ready to be used.
+// New creates properly initialized DNS Filter that is ready to be used.  c must
-func New(c *Config, blockFilters []Filter) (d *DNSFilter) {
+// be non-nil.
+func New(c *Config, blockFilters []Filter) (d *DNSFilter, err error) {
 	d = &DNSFilter{
 		resolver:          net.DefaultResolver,
+		refreshLock:       &sync.Mutex{},
+		filterTitleRegexp: regexp.MustCompile(`^! Title: +(.*)$`),
 	}
-	if c != nil {
 
 	d.safebrowsingCache = cache.New(cache.Config{
 		EnableLRU: true,
@@ -905,9 +942,8 @@ func New(c *Config, blockFilters []Filter) (d *DNSFilter) {
 		MaxSize:   c.ParentalCacheSize,
 	})
 
-		if c.CustomResolver != nil {
+	if r := c.CustomResolver; r != nil {
-			d.resolver = c.CustomResolver
+		d.resolver = r
-		}
 	}
 
 	d.hostCheckers = []hostChecker{{
@@ -930,27 +966,26 @@ func New(c *Config, blockFilters []Filter) (d *DNSFilter) {
 		name:  "safe search",
 	}}
 
-	err := d.initSecurityServices()
+	defer func() { err = errors.Annotate(err, "filtering: %w") }()
-	if err != nil {
-		log.Error("filtering: initialize services: %s", err)
 
-		return nil
+	err = d.initSecurityServices()
+	if err != nil {
+		return nil, fmt.Errorf("initializing services: %s", err)
 	}
 
-	if c != nil {
 	d.Config = *c
+	d.filtersMu = &sync.RWMutex{}
+
 	err = d.prepareRewrites()
 	if err != nil {
-			log.Error("rewrites: preparing: %s", err)
+		return nil, fmt.Errorf("rewrites: preparing: %s", err)
-
-			return nil
-		}
 	}
 
 	bsvcs := []string{}
 	for _, s := range d.BlockedServices {
 		if !BlockedSvcKnown(s) {
 			log.Debug("skipping unknown blocked-service %q", s)
+
 			continue
 		}
 		bsvcs = append(bsvcs, s)
@@ -960,13 +995,24 @@ func New(c *Config, blockFilters []Filter) (d *DNSFilter) {
 	if blockFilters != nil {
 		err = d.initFiltering(nil, blockFilters)
 		if err != nil {
-			log.Error("Can't initialize filtering subsystem: %s", err)
 			d.Close()
-			return nil
+
+			return nil, fmt.Errorf("initializing filtering subsystem: %s", err)
 		}
 	}
 
-	return d
+	_ = os.MkdirAll(filepath.Join(d.DataDir, filterDir), 0o755)
+
+	d.loadFilters(d.Filters)
+	d.loadFilters(d.WhitelistFilters)
+
+	d.Filters = deduplicateFilters(d.Filters)
+	d.WhitelistFilters = deduplicateFilters(d.WhitelistFilters)
+
+	updateUniqueFilterID(d.Filters)
+	updateUniqueFilterID(d.WhitelistFilters)
+
+	return d, nil
 }
 
 // Start - start the module:
@@ -976,9 +1022,10 @@ func (d *DNSFilter) Start() {
 	d.filtersInitializerChan = make(chan filtersInitializerParams, 1)
 	go d.filtersInitializer()
 
-	if d.Config.HTTPRegister != nil { // for tests
+	d.RegisterFilteringHandlers()
-		d.registerSecurityHandlers()
+
-		d.registerRewritesHandlers()
+	// Here we should start updating filters,
-		d.registerBlockedServicesHandlers()
+	//  but currently we can't wake up the periodic task to do so.
-	}
+	// So for now we just start this periodic task from here.
+	go d.periodicallyRefreshFilters()
 }

internal/filtering/filtering_test.go

@@ -26,10 +26,6 @@ const (
 	pcBlocked = "pornhub.com"
 )
 
-var setts = Settings{
-	ProtectionEnabled: true,
-}
-
 // Helpers.
 
 func purgeCaches(d *DNSFilter) {
@@ -44,8 +40,8 @@ func purgeCaches(d *DNSFilter) {
 	}
 }
 
-func newForTest(t testing.TB, c *Config, filters []Filter) *DNSFilter {
+func newForTest(t testing.TB, c *Config, filters []Filter) (f *DNSFilter, setts *Settings) {
-	setts = Settings{
+	setts = &Settings{
 		ProtectionEnabled: true,
 		FilteringEnabled:  true,
 	}
@@ -57,26 +53,31 @@ func newForTest(t testing.TB, c *Config, filters []Filter) *DNSFilter {
 		setts.SafeSearchEnabled = c.SafeSearchEnabled
 		setts.SafeBrowsingEnabled = c.SafeBrowsingEnabled
 		setts.ParentalEnabled = c.ParentalEnabled
+	} else {
+		// It must not be nil.
+		c = &Config{}
 	}
-	d := New(c, filters)
+	f, err := New(c, filters)
-	purgeCaches(d)
+	require.NoError(t, err)
 
-	return d
+	purgeCaches(f)
+
+	return f, setts
 }
 
-func (d *DNSFilter) checkMatch(t *testing.T, hostname string) {
+func (d *DNSFilter) checkMatch(t *testing.T, hostname string, setts *Settings) {
 	t.Helper()
 
-	res, err := d.CheckHost(hostname, dns.TypeA, &setts)
+	res, err := d.CheckHost(hostname, dns.TypeA, setts)
 	require.NoErrorf(t, err, "host %q", hostname)
 
 	assert.Truef(t, res.IsFiltered, "host %q", hostname)
 }
 
-func (d *DNSFilter) checkMatchIP(t *testing.T, hostname, ip string, qtype uint16) {
+func (d *DNSFilter) checkMatchIP(t *testing.T, hostname, ip string, qtype uint16, setts *Settings) {
 	t.Helper()
 
-	res, err := d.CheckHost(hostname, qtype, &setts)
+	res, err := d.CheckHost(hostname, qtype, setts)
 	require.NoErrorf(t, err, "host %q", hostname, err)
 	require.NotEmpty(t, res.Rules, "host %q", hostname)
 
@@ -88,10 +89,10 @@ func (d *DNSFilter) checkMatchIP(t *testing.T, hostname, ip string, qtype uint16
 	assert.Equalf(t, ip, r.IP.String(), "host %q", hostname)
 }
 
-func (d *DNSFilter) checkMatchEmpty(t *testing.T, hostname string) {
+func (d *DNSFilter) checkMatchEmpty(t *testing.T, hostname string, setts *Settings) {
 	t.Helper()
 
-	res, err := d.CheckHost(hostname, dns.TypeA, &setts)
+	res, err := d.CheckHost(hostname, dns.TypeA, setts)
 	require.NoErrorf(t, err, "host %q", hostname)
 
 	assert.Falsef(t, res.IsFiltered, "host %q", hostname)
@@ -111,19 +112,19 @@ func TestEtcHostsMatching(t *testing.T) {
 	filters := []Filter{{
 		ID: 0, Data: []byte(text),
 	}}
-	d := newForTest(t, nil, filters)
+	d, setts := newForTest(t, nil, filters)
 	t.Cleanup(d.Close)
 
-	d.checkMatchIP(t, "google.com", addr, dns.TypeA)
+	d.checkMatchIP(t, "google.com", addr, dns.TypeA, setts)
-	d.checkMatchIP(t, "www.google.com", addr, dns.TypeA)
+	d.checkMatchIP(t, "www.google.com", addr, dns.TypeA, setts)
-	d.checkMatchEmpty(t, "subdomain.google.com")
+	d.checkMatchEmpty(t, "subdomain.google.com", setts)
-	d.checkMatchEmpty(t, "example.org")
+	d.checkMatchEmpty(t, "example.org", setts)
 
 	// IPv4 match.
-	d.checkMatchIP(t, "block.com", "0.0.0.0", dns.TypeA)
+	d.checkMatchIP(t, "block.com", "0.0.0.0", dns.TypeA, setts)
 
 	// Empty IPv6.
-	res, err := d.CheckHost("block.com", dns.TypeAAAA, &setts)
+	res, err := d.CheckHost("block.com", dns.TypeAAAA, setts)
 	require.NoError(t, err)
 
 	assert.True(t, res.IsFiltered)
@@ -134,10 +135,10 @@ func TestEtcHostsMatching(t *testing.T) {
 	assert.Empty(t, res.Rules[0].IP)
 
 	// IPv6 match.
-	d.checkMatchIP(t, "ipv6.com", addr6, dns.TypeAAAA)
+	d.checkMatchIP(t, "ipv6.com", addr6, dns.TypeAAAA, setts)
 
 	// Empty IPv4.
-	res, err = d.CheckHost("ipv6.com", dns.TypeA, &setts)
+	res, err = d.CheckHost("ipv6.com", dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.True(t, res.IsFiltered)
@@ -148,7 +149,7 @@ func TestEtcHostsMatching(t *testing.T) {
 	assert.Empty(t, res.Rules[0].IP)
 
 	// Two IPv4, both must be returned.
-	res, err = d.CheckHost("host2", dns.TypeA, &setts)
+	res, err = d.CheckHost("host2", dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.True(t, res.IsFiltered)
@@ -159,7 +160,7 @@ func TestEtcHostsMatching(t *testing.T) {
 	assert.Equal(t, res.Rules[1].IP, net.IP{0, 0, 0, 2})
 
 	// One IPv6 address.
-	res, err = d.CheckHost("host2", dns.TypeAAAA, &setts)
+	res, err = d.CheckHost("host2", dns.TypeAAAA, setts)
 	require.NoError(t, err)
 
 	assert.True(t, res.IsFiltered)
@@ -176,27 +177,27 @@ func TestSafeBrowsing(t *testing.T) {
 	aghtest.ReplaceLogWriter(t, logOutput)
 	aghtest.ReplaceLogLevel(t, log.DEBUG)
 
-	d := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
+	d, setts := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
 	d.SetSafeBrowsingUpstream(aghtest.NewBlockUpstream(sbBlocked, true))
-	d.checkMatch(t, sbBlocked)
+	d.checkMatch(t, sbBlocked, setts)
 
 	require.Contains(t, logOutput.String(), fmt.Sprintf("safebrowsing lookup for %q", sbBlocked))
 
-	d.checkMatch(t, "test."+sbBlocked)
+	d.checkMatch(t, "test."+sbBlocked, setts)
-	d.checkMatchEmpty(t, "yandex.ru")
+	d.checkMatchEmpty(t, "yandex.ru", setts)
-	d.checkMatchEmpty(t, pcBlocked)
+	d.checkMatchEmpty(t, pcBlocked, setts)
 
 	// Cached result.
 	d.safeBrowsingServer = "127.0.0.1"
-	d.checkMatch(t, sbBlocked)
+	d.checkMatch(t, sbBlocked, setts)
-	d.checkMatchEmpty(t, pcBlocked)
+	d.checkMatchEmpty(t, pcBlocked, setts)
 	d.safeBrowsingServer = defaultSafebrowsingServer
 }
 
 func TestParallelSB(t *testing.T) {
-	d := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
+	d, setts := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
 	d.SetSafeBrowsingUpstream(aghtest.NewBlockUpstream(sbBlocked, true))
@@ -205,10 +206,10 @@ func TestParallelSB(t *testing.T) {
 		for i := 0; i < 100; i++ {
 			t.Run(fmt.Sprintf("aaa%d", i), func(t *testing.T) {
 				t.Parallel()
-				d.checkMatch(t, sbBlocked)
+				d.checkMatch(t, sbBlocked, setts)
-				d.checkMatch(t, "test."+sbBlocked)
+				d.checkMatch(t, "test."+sbBlocked, setts)
-				d.checkMatchEmpty(t, "yandex.ru")
+				d.checkMatchEmpty(t, "yandex.ru", setts)
-				d.checkMatchEmpty(t, pcBlocked)
+				d.checkMatchEmpty(t, pcBlocked, setts)
 			})
 		}
 	})
@@ -217,7 +218,7 @@ func TestParallelSB(t *testing.T) {
 // Safe Search.
 
 func TestSafeSearch(t *testing.T) {
-	d := newForTest(t, &Config{SafeSearchEnabled: true}, nil)
+	d, _ := newForTest(t, &Config{SafeSearchEnabled: true}, nil)
 	t.Cleanup(d.Close)
 	val, ok := d.SafeSearchDomain("www.google.com")
 	require.True(t, ok)
@@ -226,7 +227,7 @@ func TestSafeSearch(t *testing.T) {
 }
 
 func TestCheckHostSafeSearchYandex(t *testing.T) {
-	d := newForTest(t, &Config{
+	d, setts := newForTest(t, &Config{
 		SafeSearchEnabled: true,
 	}, nil)
 	t.Cleanup(d.Close)
@@ -243,7 +244,7 @@ func TestCheckHostSafeSearchYandex(t *testing.T) {
 		"www.yandex.com",
 	} {
 		t.Run(strings.ToLower(host), func(t *testing.T) {
-			res, err := d.CheckHost(host, dns.TypeA, &setts)
+			res, err := d.CheckHost(host, dns.TypeA, setts)
 			require.NoError(t, err)
 
 			assert.True(t, res.IsFiltered)
@@ -258,7 +259,7 @@ func TestCheckHostSafeSearchYandex(t *testing.T) {
 
 func TestCheckHostSafeSearchGoogle(t *testing.T) {
 	resolver := &aghtest.TestResolver{}
-	d := newForTest(t, &Config{
+	d, setts := newForTest(t, &Config{
 		SafeSearchEnabled: true,
 		CustomResolver:    resolver,
 	}, nil)
@@ -277,7 +278,7 @@ func TestCheckHostSafeSearchGoogle(t *testing.T) {
 		"www.google.je",
 	} {
 		t.Run(host, func(t *testing.T) {
-			res, err := d.CheckHost(host, dns.TypeA, &setts)
+			res, err := d.CheckHost(host, dns.TypeA, setts)
 			require.NoError(t, err)
 
 			assert.True(t, res.IsFiltered)
@@ -291,12 +292,12 @@ func TestCheckHostSafeSearchGoogle(t *testing.T) {
 }
 
 func TestSafeSearchCacheYandex(t *testing.T) {
-	d := newForTest(t, nil, nil)
+	d, setts := newForTest(t, nil, nil)
 	t.Cleanup(d.Close)
 	const domain = "yandex.ru"
 
 	// Check host with disabled safesearch.
-	res, err := d.CheckHost(domain, dns.TypeA, &setts)
+	res, err := d.CheckHost(domain, dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.False(t, res.IsFiltered)
@@ -305,10 +306,10 @@ func TestSafeSearchCacheYandex(t *testing.T) {
 
 	yandexIP := net.IPv4(213, 180, 193, 56)
 
-	d = newForTest(t, &Config{SafeSearchEnabled: true}, nil)
+	d, setts = newForTest(t, &Config{SafeSearchEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
-	res, err = d.CheckHost(domain, dns.TypeA, &setts)
+	res, err = d.CheckHost(domain, dns.TypeA, setts)
 	require.NoError(t, err)
 
 	// For yandex we already know valid IP.
@@ -325,20 +326,20 @@ func TestSafeSearchCacheYandex(t *testing.T) {
 
 func TestSafeSearchCacheGoogle(t *testing.T) {
 	resolver := &aghtest.TestResolver{}
-	d := newForTest(t, &Config{
+	d, setts := newForTest(t, &Config{
 		CustomResolver: resolver,
 	}, nil)
 	t.Cleanup(d.Close)
 
 	const domain = "www.google.ru"
-	res, err := d.CheckHost(domain, dns.TypeA, &setts)
+	res, err := d.CheckHost(domain, dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.False(t, res.IsFiltered)
 
 	require.Empty(t, res.Rules)
 
-	d = newForTest(t, &Config{SafeSearchEnabled: true}, nil)
+	d, setts = newForTest(t, &Config{SafeSearchEnabled: true}, nil)
 	t.Cleanup(d.Close)
 	d.resolver = resolver
 
@@ -358,7 +359,7 @@ func TestSafeSearchCacheGoogle(t *testing.T) {
 		}
 	}
 
-	res, err = d.CheckHost(domain, dns.TypeA, &setts)
+	res, err = d.CheckHost(domain, dns.TypeA, setts)
 	require.NoError(t, err)
 	require.Len(t, res.Rules, 1)
 
@@ -379,22 +380,22 @@ func TestParentalControl(t *testing.T) {
 	aghtest.ReplaceLogWriter(t, logOutput)
 	aghtest.ReplaceLogLevel(t, log.DEBUG)
 
-	d := newForTest(t, &Config{ParentalEnabled: true}, nil)
+	d, setts := newForTest(t, &Config{ParentalEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
 	d.SetParentalUpstream(aghtest.NewBlockUpstream(pcBlocked, true))
-	d.checkMatch(t, pcBlocked)
+	d.checkMatch(t, pcBlocked, setts)
 	require.Contains(t, logOutput.String(), fmt.Sprintf("parental lookup for %q", pcBlocked))
 
-	d.checkMatch(t, "www."+pcBlocked)
+	d.checkMatch(t, "www."+pcBlocked, setts)
-	d.checkMatchEmpty(t, "www.yandex.ru")
+	d.checkMatchEmpty(t, "www.yandex.ru", setts)
-	d.checkMatchEmpty(t, "yandex.ru")
+	d.checkMatchEmpty(t, "yandex.ru", setts)
-	d.checkMatchEmpty(t, "api.jquery.com")
+	d.checkMatchEmpty(t, "api.jquery.com", setts)
 
 	// Test cached result.
 	d.parentalServer = "127.0.0.1"
-	d.checkMatch(t, pcBlocked)
+	d.checkMatch(t, pcBlocked, setts)
-	d.checkMatchEmpty(t, "yandex.ru")
+	d.checkMatchEmpty(t, "yandex.ru", setts)
 }
 
 // Filtering.
@@ -679,10 +680,10 @@ func TestMatching(t *testing.T) {
 	for _, tc := range testCases {
 		t.Run(fmt.Sprintf("%s-%s", tc.name, tc.host), func(t *testing.T) {
 			filters := []Filter{{ID: 0, Data: []byte(tc.rules)}}
-			d := newForTest(t, nil, filters)
+			d, setts := newForTest(t, nil, filters)
 			t.Cleanup(d.Close)
 
-			res, err := d.CheckHost(tc.host, tc.wantDNSType, &setts)
+			res, err := d.CheckHost(tc.host, tc.wantDNSType, setts)
 			require.NoError(t, err)
 
 			assert.Equalf(t, tc.wantIsFiltered, res.IsFiltered, "Hostname %s has wrong result (%v must be %v)", tc.host, res.IsFiltered, tc.wantIsFiltered)
@@ -705,7 +706,7 @@ func TestWhitelist(t *testing.T) {
 	whiteFilters := []Filter{{
 		ID: 0, Data: []byte(whiteRules),
 	}}
-	d := newForTest(t, nil, filters)
+	d, setts := newForTest(t, nil, filters)
 
 	err := d.SetFilters(filters, whiteFilters, false)
 	require.NoError(t, err)
@@ -713,7 +714,7 @@ func TestWhitelist(t *testing.T) {
 	t.Cleanup(d.Close)
 
 	// Matched by white filter.
-	res, err := d.CheckHost("host1", dns.TypeA, &setts)
+	res, err := d.CheckHost("host1", dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.False(t, res.IsFiltered)
@@ -724,7 +725,7 @@ func TestWhitelist(t *testing.T) {
 	assert.Equal(t, "||host1^", res.Rules[0].Text)
 
 	// Not matched by white filter, but matched by block filter.
-	res, err = d.CheckHost("host2", dns.TypeA, &setts)
+	res, err = d.CheckHost("host2", dns.TypeA, setts)
 	require.NoError(t, err)
 
 	assert.True(t, res.IsFiltered)
@@ -750,7 +751,7 @@ func applyClientSettings(setts *Settings) {
 }
 
 func TestClientSettings(t *testing.T) {
-	d := newForTest(t,
+	d, setts := newForTest(t,
 		&Config{
 			ParentalEnabled:     true,
 			SafeBrowsingEnabled: false,
@@ -796,7 +797,7 @@ func TestClientSettings(t *testing.T) {
 		return func(t *testing.T) {
 			t.Helper()
 
-			r, err := d.CheckHost(tc.host, dns.TypeA, &setts)
+			r, err := d.CheckHost(tc.host, dns.TypeA, setts)
 			require.NoError(t, err)
 
 			if before {
@@ -814,7 +815,7 @@ func TestClientSettings(t *testing.T) {
 		t.Run(tc.name, makeTester(tc, tc.before))
 	}
 
-	applyClientSettings(&setts)
+	applyClientSettings(setts)
 
 	for _, tc := range testCases {
 		t.Run(tc.name, makeTester(tc, !tc.before))
@@ -824,13 +825,13 @@ func TestClientSettings(t *testing.T) {
 // Benchmarks.
 
 func BenchmarkSafeBrowsing(b *testing.B) {
-	d := newForTest(b, &Config{SafeBrowsingEnabled: true}, nil)
+	d, setts := newForTest(b, &Config{SafeBrowsingEnabled: true}, nil)
 	b.Cleanup(d.Close)
 
 	d.SetSafeBrowsingUpstream(aghtest.NewBlockUpstream(sbBlocked, true))
 
 	for n := 0; n < b.N; n++ {
-		res, err := d.CheckHost(sbBlocked, dns.TypeA, &setts)
+		res, err := d.CheckHost(sbBlocked, dns.TypeA, setts)
 		require.NoError(b, err)
 
 		assert.Truef(b, res.IsFiltered, "expected hostname %q to match", sbBlocked)
@@ -838,14 +839,14 @@ func BenchmarkSafeBrowsing(b *testing.B) {
 }
 
 func BenchmarkSafeBrowsingParallel(b *testing.B) {
-	d := newForTest(b, &Config{SafeBrowsingEnabled: true}, nil)
+	d, setts := newForTest(b, &Config{SafeBrowsingEnabled: true}, nil)
 	b.Cleanup(d.Close)
 
 	d.SetSafeBrowsingUpstream(aghtest.NewBlockUpstream(sbBlocked, true))
 
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			res, err := d.CheckHost(sbBlocked, dns.TypeA, &setts)
+			res, err := d.CheckHost(sbBlocked, dns.TypeA, setts)
 			require.NoError(b, err)
 
 			assert.Truef(b, res.IsFiltered, "expected hostname %q to match", sbBlocked)
@@ -854,7 +855,7 @@ func BenchmarkSafeBrowsingParallel(b *testing.B) {
 }
 
 func BenchmarkSafeSearch(b *testing.B) {
-	d := newForTest(b, &Config{SafeSearchEnabled: true}, nil)
+	d, _ := newForTest(b, &Config{SafeSearchEnabled: true}, nil)
 	b.Cleanup(d.Close)
 	for n := 0; n < b.N; n++ {
 		val, ok := d.SafeSearchDomain("www.google.com")
@@ -865,7 +866,7 @@ func BenchmarkSafeSearch(b *testing.B) {
 }
 
 func BenchmarkSafeSearchParallel(b *testing.B) {
-	d := newForTest(b, &Config{SafeSearchEnabled: true}, nil)
+	d, _ := newForTest(b, &Config{SafeSearchEnabled: true}, nil)
 	b.Cleanup(d.Close)
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {

internal/filtering/rewrites.go

@@ -133,34 +133,31 @@ func matchDomainWildcard(host, wildcard string) (ok bool) {
 //  1. A and AAAA > CNAME
 //  2. wildcard > exact
 //  3. lower level wildcard > higher level wildcard
+//
+// TODO(a.garipov):  Replace with slices.Sort.
 type rewritesSorted []*LegacyRewrite
 
-// Len implements the sort.Interface interface for legacyRewritesSorted.
+// Len implements the sort.Interface interface for rewritesSorted.
 func (a rewritesSorted) Len() (l int) { return len(a) }
 
-// Swap implements the sort.Interface interface for legacyRewritesSorted.
+// Swap implements the sort.Interface interface for rewritesSorted.
 func (a rewritesSorted) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
 
-// Less implements the sort.Interface interface for legacyRewritesSorted.
+// Less implements the sort.Interface interface for rewritesSorted.
 func (a rewritesSorted) Less(i, j int) (less bool) {
-	if a[i].Type == dns.TypeCNAME && a[j].Type != dns.TypeCNAME {
+	ith, jth := a[i], a[j]
+	if ith.Type == dns.TypeCNAME && jth.Type != dns.TypeCNAME {
 		return true
-	} else if a[i].Type != dns.TypeCNAME && a[j].Type == dns.TypeCNAME {
+	} else if ith.Type != dns.TypeCNAME && jth.Type == dns.TypeCNAME {
 		return false
 	}
 
-	if isWildcard(a[i].Domain) {
+	if iw, jw := isWildcard(ith.Domain), isWildcard(jth.Domain); iw != jw {
-		if !isWildcard(a[j].Domain) {
+		return jw
-			return false
-		}
-	} else {
-		if isWildcard(a[j].Domain) {
-			return true
-		}
 	}
 
-	// Both are wildcards.
+	// Both are either wildcards or not.
-	return len(a[i].Domain) > len(a[j].Domain)
+	return len(ith.Domain) > len(jth.Domain)
 }
 
 // prepareRewrites normalizes and validates all legacy DNS rewrites.
@@ -313,9 +310,3 @@ func (d *DNSFilter) handleRewriteDelete(w http.ResponseWriter, r *http.Request)
 
 	d.Config.ConfigModified()
 }
-
-func (d *DNSFilter) registerRewritesHandlers() {
-	d.Config.HTTPRegister(http.MethodGet, "/control/rewrite/list", d.handleRewriteList)
-	d.Config.HTTPRegister(http.MethodPost, "/control/rewrite/add", d.handleRewriteAdd)
-	d.Config.HTTPRegister(http.MethodPost, "/control/rewrite/delete", d.handleRewriteDelete)
-}

internal/filtering/rewrites_test.go

@@ -12,7 +12,7 @@ import (
 // TODO(e.burkov): All the tests in this file may and should me merged together.
 
 func TestRewrites(t *testing.T) {
-	d := newForTest(t, nil, nil)
+	d, _ := newForTest(t, nil, nil)
 	t.Cleanup(d.Close)
 
 	d.Rewrites = []*LegacyRewrite{{
@@ -188,7 +188,7 @@ func TestRewrites(t *testing.T) {
 }
 
 func TestRewritesLevels(t *testing.T) {
-	d := newForTest(t, nil, nil)
+	d, _ := newForTest(t, nil, nil)
 	t.Cleanup(d.Close)
 	// Exact host, wildcard L2, wildcard L3.
 	d.Rewrites = []*LegacyRewrite{{
@@ -235,7 +235,7 @@ func TestRewritesLevels(t *testing.T) {
 }
 
 func TestRewritesExceptionCNAME(t *testing.T) {
-	d := newForTest(t, nil, nil)
+	d, _ := newForTest(t, nil, nil)
 	t.Cleanup(d.Close)
 	// Wildcard and exception for a sub-domain.
 	d.Rewrites = []*LegacyRewrite{{
@@ -286,7 +286,7 @@ func TestRewritesExceptionCNAME(t *testing.T) {
 }
 
 func TestRewritesExceptionIP(t *testing.T) {
-	d := newForTest(t, nil, nil)
+	d, _ := newForTest(t, nil, nil)
 	t.Cleanup(d.Close)
 	// Exception for AAAA record.
 	d.Rewrites = []*LegacyRewrite{{

internal/filtering/safebrowsing.go

@@ -415,17 +415,3 @@ func (d *DNSFilter) handleParentalStatus(w http.ResponseWriter, r *http.Request)
 		aghhttp.Error(r, w, http.StatusInternalServerError, "Unable to write response json: %s", err)
 	}
 }
-
-func (d *DNSFilter) registerSecurityHandlers() {
-	d.Config.HTTPRegister(http.MethodPost, "/control/safebrowsing/enable", d.handleSafeBrowsingEnable)
-	d.Config.HTTPRegister(http.MethodPost, "/control/safebrowsing/disable", d.handleSafeBrowsingDisable)
-	d.Config.HTTPRegister(http.MethodGet, "/control/safebrowsing/status", d.handleSafeBrowsingStatus)
-
-	d.Config.HTTPRegister(http.MethodPost, "/control/parental/enable", d.handleParentalEnable)
-	d.Config.HTTPRegister(http.MethodPost, "/control/parental/disable", d.handleParentalDisable)
-	d.Config.HTTPRegister(http.MethodGet, "/control/parental/status", d.handleParentalStatus)
-
-	d.Config.HTTPRegister(http.MethodPost, "/control/safesearch/enable", d.handleSafeSearchEnable)
-	d.Config.HTTPRegister(http.MethodPost, "/control/safesearch/disable", d.handleSafeSearchDisable)
-	d.Config.HTTPRegister(http.MethodGet, "/control/safesearch/status", d.handleSafeSearchStatus)
-}

internal/filtering/safebrowsing_test.go

@@ -107,7 +107,7 @@ func TestSafeBrowsingCache(t *testing.T) {
 }
 
 func TestSBPC_checkErrorUpstream(t *testing.T) {
-	d := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
+	d, _ := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
 	ups := aghtest.NewErrorUpstream()
@@ -128,7 +128,7 @@ func TestSBPC_checkErrorUpstream(t *testing.T) {
 }
 
 func TestSBPC(t *testing.T) {
-	d := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
+	d, _ := newForTest(t, &Config{SafeBrowsingEnabled: true}, nil)
 	t.Cleanup(d.Close)
 
 	const hostname = "example.org"

internal/home/config.go

@@ -14,7 +14,6 @@ import (
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
 	"github.com/AdguardTeam/AdGuardHome/internal/querylog"
 	"github.com/AdguardTeam/AdGuardHome/internal/stats"
-	"github.com/AdguardTeam/AdGuardHome/internal/version"
 	"github.com/AdguardTeam/dnsproxy/fastip"
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
@@ -23,10 +22,9 @@ import (
 	yaml "gopkg.in/yaml.v3"
 )
 
-const (
+// dataDir is the name of a directory under the working one to store some
-	dataDir   = "data"    // data storage
+// persistent data.
-	filterDir = "filters" // cache location for downloaded filters, it's under DataDir
+const dataDir = "data"
-)
 
 // logSettings are the logging settings part of the configuration file.
 //
@@ -108,8 +106,15 @@ type configuration struct {
 	DNS dnsConfig         `yaml:"dns"`
 	TLS tlsConfigSettings `yaml:"tls"`
 
-	Filters          []filter `yaml:"filters"`
+	// Filters reflects the filters from [filtering.Config].  It's cloned to the
-	WhitelistFilters []filter `yaml:"whitelist_filters"`
+	// config used in the filtering module at the startup.  Afterwards it's
+	// cloned from the filtering module back here.
+	//
+	// TODO(e.burkov):  Move all the filtering configuration fields into the
+	// only configuration subsection covering the changes with a single
+	// migration.
+	Filters          []filtering.FilterYAML `yaml:"filters"`
+	WhitelistFilters []filtering.FilterYAML `yaml:"whitelist_filters"`
 	UserRules        []string               `yaml:"user_rules"`
 
 	DHCP *dhcpd.ServerConfig `yaml:"dhcp"`
@@ -145,9 +150,7 @@ type dnsConfig struct {
 
 	dnsforward.FilteringConfig `yaml:",inline"`
 
-	FilteringEnabled           bool             `yaml:"filtering_enabled"`       // whether or not use filter lists
+	DnsfilterConf *filtering.Config `yaml:",inline"`
-	FiltersUpdateIntervalHours uint32           `yaml:"filters_update_interval"` // time period to update filters (in hours)
-	DnsfilterConf              filtering.Config `yaml:",inline"`
 
 	// UpstreamTimeout is the timeout for querying upstream servers.
 	UpstreamTimeout timeutil.Duration `yaml:"upstream_timeout"`
@@ -198,10 +201,15 @@ var config = &configuration{
 	BindHost:           net.IP{0, 0, 0, 0},
 	AuthAttempts:       5,
 	AuthBlockMin:       15,
+	WebSessionTTLHours: 30 * 24,
 	DNS: dnsConfig{
 		BindHosts:           []net.IP{{0, 0, 0, 0}},
 		Port:                defaultPortDNS,
 		StatsInterval:       1,
+		QueryLogEnabled:     true,
+		QueryLogFileEnabled: true,
+		QueryLogInterval:    timeutil.Duration{Duration: 90 * timeutil.Day},
+		QueryLogMemSize:     1000,
 		FilteringConfig: dnsforward.FilteringConfig{
 			ProtectionEnabled:  true, // whether or not use any of filtering features
 			BlockingMode:       dnsforward.BlockingModeDefault,
@@ -222,8 +230,14 @@ var config = &configuration{
 			// was later increased to 300 due to https://github.com/AdguardTeam/AdGuardHome/issues/2257
 			MaxGoroutines: 300,
 		},
-		FilteringEnabled:           true, // whether or not use filter lists
+		DnsfilterConf: &filtering.Config{
+			SafeBrowsingCacheSize:      1 * 1024 * 1024,
+			SafeSearchCacheSize:        1 * 1024 * 1024,
+			ParentalCacheSize:          1 * 1024 * 1024,
+			CacheTime:                  30,
+			FilteringEnabled:           true,
 			FiltersUpdateIntervalHours: 24,
+		},
 		UpstreamTimeout: timeutil.Duration{Duration: dnsforward.DefaultTimeout},
 		UsePrivateRDNS:  true,
 	},
@@ -232,8 +246,26 @@ var config = &configuration{
 		PortDNSOverTLS:  defaultPortTLS, // needs to be passed through to dnsproxy
 		PortDNSOverQUIC: defaultPortQUIC,
 	},
+	Filters: []filtering.FilterYAML{{
+		Filter:  filtering.Filter{ID: 1},
+		Enabled: true,
+		URL:     "https://adguardteam.github.io/AdGuardSDNSFilter/Filters/filter.txt",
+		Name:    "AdGuard DNS filter",
+	}, {
+		Filter:  filtering.Filter{ID: 2},
+		Enabled: false,
+		URL:     "https://adaway.org/hosts.txt",
+		Name:    "AdAway Default Blocklist",
+	}},
 	DHCP: &dhcpd.ServerConfig{
 		LocalDomainName: "lan",
+		Conf4: dhcpd.V4ServerConf{
+			LeaseDuration: dhcpd.DefaultDHCPLeaseTTL,
+			ICMPTimeout:   dhcpd.DefaultDHCPTimeoutICMP,
+		},
+		Conf6: dhcpd.V6ServerConf{
+			LeaseDuration: dhcpd.DefaultDHCPLeaseTTL,
+		},
 	},
 	Clients: &clientsConfig{
 		Sources: &clientSourcesConf{
@@ -255,31 +287,6 @@ var config = &configuration{
 	SchemaVersion: currentSchemaVersion,
 }
 
-// initConfig initializes default configuration for the current OS&ARCH
-func initConfig() {
-	config.WebSessionTTLHours = 30 * 24
-
-	config.DNS.QueryLogEnabled = true
-	config.DNS.QueryLogFileEnabled = true
-	config.DNS.QueryLogInterval = timeutil.Duration{Duration: 90 * timeutil.Day}
-	config.DNS.QueryLogMemSize = 1000
-
-	config.DNS.CacheSize = 4 * 1024 * 1024
-	config.DNS.DnsfilterConf.SafeBrowsingCacheSize = 1 * 1024 * 1024
-	config.DNS.DnsfilterConf.SafeSearchCacheSize = 1 * 1024 * 1024
-	config.DNS.DnsfilterConf.ParentalCacheSize = 1 * 1024 * 1024
-	config.DNS.DnsfilterConf.CacheTime = 30
-	config.Filters = defaultFilters()
-
-	config.DHCP.Conf4.LeaseDuration = dhcpd.DefaultDHCPLeaseTTL
-	config.DHCP.Conf4.ICMPTimeout = dhcpd.DefaultDHCPTimeoutICMP
-	config.DHCP.Conf6.LeaseDuration = dhcpd.DefaultDHCPLeaseTTL
-
-	if ch := version.Channel(); ch == version.ChannelEdge || ch == version.ChannelDevelopment {
-		config.BetaBindPort = 3001
-	}
-}
-
 // getConfigFilename returns path to the current config file
 func (c *configuration) getConfigFilename() string {
 	configFile, err := filepath.EvalSymlinks(Context.configFilename)
@@ -348,8 +355,8 @@ func parseConfig() (err error) {
 		return fmt.Errorf("validating udp ports: %w", err)
 	}
 
-	if !checkFiltersUpdateIntervalHours(config.DNS.FiltersUpdateIntervalHours) {
+	if !filtering.ValidateUpdateIvl(config.DNS.DnsfilterConf.FiltersUpdateIntervalHours) {
-		config.DNS.FiltersUpdateIntervalHours = 24
+		config.DNS.DnsfilterConf.FiltersUpdateIntervalHours = 24
 	}
 
 	if config.DNS.UpstreamTimeout.Duration == 0 {
@@ -418,10 +425,11 @@ func (c *configuration) write() (err error) {
 		config.DNS.AnonymizeClientIP = dc.AnonymizeClientIP
 	}
 
-	if Context.dnsFilter != nil {
+	if Context.filters != nil {
-		c := filtering.Config{}
+		Context.filters.WriteDiskConfig(config.DNS.DnsfilterConf)
-		Context.dnsFilter.WriteDiskConfig(&c)
+		config.Filters = config.DNS.DnsfilterConf.Filters
-		config.DNS.DnsfilterConf = c
+		config.WhitelistFilters = config.DNS.DnsfilterConf.WhitelistFilters
+		config.UserRules = config.DNS.DnsfilterConf.UserRules
 	}
 
 	if s := Context.dnsServer; s != nil {

internal/home/control.go

@@ -291,7 +291,7 @@ func handleHTTPSRedirect(w http.ResponseWriter, r *http.Request) (ok bool) {
 		}
 
 		httpsURL := &url.URL{
-			Scheme:   schemeHTTPS,
+			Scheme:   aghhttp.SchemeHTTPS,
 			Host:     hostPort,
 			Path:     r.URL.Path,
 			RawQuery: r.URL.RawQuery,
@@ -307,7 +307,7 @@ func handleHTTPSRedirect(w http.ResponseWriter, r *http.Request) (ok bool) {
 	//
 	// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Origin.
 	originURL := &url.URL{
-		Scheme: schemeHTTP,
+		Scheme: aghhttp.SchemeHTTP,
 		Host:   r.Host,
 	}
 	w.Header().Set("Access-Control-Allow-Origin", originURL.String())

internal/home/dns.go

@@ -31,7 +31,10 @@ const (
 
 // Called by other modules when configuration is changed
 func onConfigModified() {
-	_ = config.write()
+	err := config.write()
+	if err != nil {
+		log.Error("writing config: %s", err)
+	}
 }
 
 // initDNSServer creates an instance of the dnsforward.Server
@@ -71,11 +74,11 @@ func initDNSServer() (err error) {
 	}
 	Context.queryLog = querylog.New(conf)
 
-	filterConf := config.DNS.DnsfilterConf
+	Context.filters, err = filtering.New(config.DNS.DnsfilterConf, nil)
-	filterConf.EtcHosts = Context.etcHosts
+	if err != nil {
-	filterConf.ConfigModified = onConfigModified
+		// Don't wrap the error, since it's informative enough as is.
-	filterConf.HTTPRegister = httpRegister
+		return err
-	Context.dnsFilter = filtering.New(&filterConf, nil)
+	}
 
 	var privateNets netutil.SubnetSet
 	switch len(config.DNS.PrivateNets) {
@@ -83,13 +86,10 @@ func initDNSServer() (err error) {
 		// Use an optimized locally-served matcher.
 		privateNets = netutil.SubnetSetFunc(netutil.IsLocallyServed)
 	case 1:
-		var n *net.IPNet
+		privateNets, err = netutil.ParseSubnet(config.DNS.PrivateNets[0])
-		n, err = netutil.ParseSubnet(config.DNS.PrivateNets[0])
 		if err != nil {
 			return fmt.Errorf("preparing the set of private subnets: %w", err)
 		}
-
-		privateNets = n
 	default:
 		var nets []*net.IPNet
 		nets, err = netutil.ParseSubnets(config.DNS.PrivateNets...)
@@ -101,15 +101,13 @@ func initDNSServer() (err error) {
 	}
 
 	p := dnsforward.DNSCreateParams{
-		DNSFilter:   Context.dnsFilter,
+		DNSFilter:   Context.filters,
 		Stats:       Context.stats,
 		QueryLog:    Context.queryLog,
 		PrivateNets: privateNets,
 		Anonymizer:  anonymizer,
 		LocalDomain: config.DHCP.LocalDomainName,
-	}
+		DHCPServer:  Context.dhcpServer,
-	if Context.dhcpServer != nil {
-		p.DHCPServer = Context.dhcpServer
 	}
 
 	Context.dnsServer, err = dnsforward.NewServer(p)
@@ -143,7 +141,6 @@ func initDNSServer() (err error) {
 		Context.whois = initWHOIS(&Context.clients)
 	}
 
-	Context.filters.Init()
 	return nil
 }
 
@@ -244,7 +241,6 @@ func generateServerConfig() (newConf dnsforward.ServerConfig, err error) {
 	}
 
 	newConf.TLSv12Roots = Context.tlsRoots
-	newConf.TLSCiphers = Context.tlsCiphers
 	newConf.TLSAllowUnencryptedDoH = tlsConf.AllowUnencryptedDoH
 
 	newConf.FilterHandler = applyAdditionalFiltering
@@ -336,9 +332,12 @@ func getDNSEncryption() (de dnsEncryption) {
 // applyAdditionalFiltering adds additional client information and settings if
 // the client has them.
 func applyAdditionalFiltering(clientIP net.IP, clientID string, setts *filtering.Settings) {
-	Context.dnsFilter.ApplyBlockedServices(setts, nil, true)
+	// pref is a prefix for logging messages around the scope.
+	const pref = "applying filters"
 
-	log.Debug("looking up settings for client with ip %s and clientid %q", clientIP, clientID)
+	Context.filters.ApplyBlockedServices(setts, nil)
+
+	log.Debug("%s: looking for client with ip %s and clientid %q", pref, clientIP, clientID)
 
 	if clientIP == nil {
 		return
@@ -350,16 +349,16 @@ func applyAdditionalFiltering(clientIP net.IP, clientID string, setts *filtering
 	if !ok {
 		c, ok = Context.clients.Find(clientIP.String())
 		if !ok {
-			log.Debug("client with ip %s and clientid %q not found", clientIP, clientID)
+			log.Debug("%s: no clients with ip %s and clientid %q", pref, clientIP, clientID)
 
 			return
 		}
 	}
 
-	log.Debug("using settings for client %q with ip %s and clientid %q", c.Name, clientIP, clientID)
+	log.Debug("%s: using settings for client %q (%s; %q)", pref, c.Name, clientIP, clientID)
 
 	if c.UseOwnBlockedServices {
-		Context.dnsFilter.ApplyBlockedServices(setts, c.BlockedServices, false)
+		Context.filters.ApplyBlockedServices(setts, c.BlockedServices)
 	}
 
 	setts.ClientName = c.Name
@@ -382,7 +381,7 @@ func startDNSServer() error {
 		return fmt.Errorf("unable to start forwarding DNS server: Already running")
 	}
 
-	enableFiltersLocked(false)
+	Context.filters.EnableFilters(false)
 
 	Context.clients.Start()
 
@@ -391,7 +390,6 @@ func startDNSServer() error {
 		return fmt.Errorf("couldn't start forwarding DNS server: %w", err)
 	}
 
-	Context.dnsFilter.Start()
 	Context.filters.Start()
 	Context.stats.Start()
 	Context.queryLog.Start()
@@ -450,10 +448,7 @@ func closeDNSServer() {
 		Context.dnsServer = nil
 	}
 
-	if Context.dnsFilter != nil {
+	Context.filters.Close()
-		Context.dnsFilter.Close()
-		Context.dnsFilter = nil
-	}
 
 	if Context.stats != nil {
 		err := Context.stats.Close()
@@ -470,7 +465,5 @@ func closeDNSServer() {
 		Context.queryLog = nil
 	}
 
-	Context.filters.Close()
+	log.Debug("all dns modules are closed")
-
-	log.Debug("Closed all DNS modules")
 }

internal/home/home.go

@@ -20,8 +20,10 @@ import (
 	"time"
 
 	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghos"
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtls"
 	"github.com/AdguardTeam/AdGuardHome/internal/dhcpd"
 	"github.com/AdguardTeam/AdGuardHome/internal/dnsforward"
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
@@ -32,6 +34,7 @@ import (
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/AdguardTeam/golibs/netutil"
+	"golang.org/x/exp/slices"
 	"gopkg.in/natefinch/lumberjack.v2"
 )
 
@@ -51,10 +54,9 @@ type homeContext struct {
 	dnsServer  *dnsforward.Server   // DNS module
 	rdns       *RDNS                // rDNS module
 	whois      *WHOIS               // WHOIS module
-	dnsFilter  *filtering.DNSFilter // DNS filtering module
 	dhcpServer dhcpd.Interface      // DHCP module
 	auth       *Auth                // HTTP authentication module
-	filters    Filtering            // DNS filtering module
+	filters    *filtering.DNSFilter // DNS filtering module
 	web        *Web                 // Web (HTTP, HTTPS) module
 	tls        *TLSMod              // TLS module
 	// etcHosts is an IP-hostname pairs set taken from system configuration
@@ -78,7 +80,6 @@ type homeContext struct {
 	disableUpdate    bool   // If set, don't check for updates
 	controlLock      sync.Mutex
 	tlsRoots         *x509.CertPool // list of root CAs for TLSv1.2
-	tlsCiphers       []uint16       // list of TLS ciphers to use
 	transport        *http.Transport
 	client           *http.Client
 	appSignalChannel chan os.Signal // Channel for receiving OS signals by the console app
@@ -140,15 +141,20 @@ func setupContext(args options) {
 		checkPermissions()
 	}
 
-	initConfig()
+	switch version.Channel() {
+	case version.ChannelEdge, version.ChannelDevelopment:
+		config.BetaBindPort = 3001
+	default:
+		// Go on.
+	}
 
 	Context.tlsRoots = LoadSystemRootCAs()
-	Context.tlsCiphers = InitTLSCiphers()
 	Context.transport = &http.Transport{
 		DialContext: customDialContext,
 		Proxy:       getHTTPProxy,
 		TLSClientConfig: &tls.Config{
 			RootCAs:      Context.tlsRoots,
+			CipherSuites: aghtls.SaferCipherSuites(),
 			MinVersion:   tls.VersionTLS12,
 		},
 	}
@@ -265,6 +271,14 @@ func setupHostsContainer() (err error) {
 }
 
 func setupConfig(args options) (err error) {
+	config.DNS.DnsfilterConf.EtcHosts = Context.etcHosts
+	config.DNS.DnsfilterConf.ConfigModified = onConfigModified
+	config.DNS.DnsfilterConf.HTTPRegister = httpRegister
+	config.DNS.DnsfilterConf.DataDir = Context.getDataDir()
+	config.DNS.DnsfilterConf.Filters = slices.Clone(config.Filters)
+	config.DNS.DnsfilterConf.WhitelistFilters = slices.Clone(config.WhitelistFilters)
+	config.DNS.DnsfilterConf.HTTPClient = Context.client
+
 	config.DHCP.WorkDir = Context.workDir
 	config.DHCP.HTTPRegister = httpRegister
 	config.DHCP.ConfigModified = onConfigModified
@@ -384,8 +398,6 @@ func fatalOnError(err error) {
 
 // run configures and starts AdGuard Home.
 func run(args options, clientBuildFS fs.FS) {
-	var err error
-
 	// configure config filename
 	initConfigFilename(args)
 
@@ -404,7 +416,7 @@ func run(args options, clientBuildFS fs.FS) {
 
 	setupContext(args)
 
-	err = configureOS(config)
+	err := configureOS(config)
 	fatalOnError(err)
 
 	// clients package uses filtering package's static data (filtering.BlockedSvcKnown()),
@@ -763,12 +775,12 @@ func printHTTPAddresses(proto string) {
 	}
 
 	port := config.BindPort
-	if proto == schemeHTTPS {
+	if proto == aghhttp.SchemeHTTPS {
 		port = tlsConf.PortHTTPS
 	}
 
 	// TODO(e.burkov): Inspect and perhaps merge with the previous condition.
-	if proto == schemeHTTPS && tlsConf.ServerName != "" {
+	if proto == aghhttp.SchemeHTTPS && tlsConf.ServerName != "" {
 		printWebAddrs(proto, tlsConf.ServerName, tlsConf.PortHTTPS, 0)
 
 		return

internal/home/mobileconfig.go

@@ -8,6 +8,7 @@ import (
 	"net/url"
 	"path"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/dnsforward"
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
@@ -82,7 +83,7 @@ func encodeMobileConfig(d *dnsSettings, clientID string) ([]byte, error) {
 	case dnsProtoHTTPS:
 		dspName = fmt.Sprintf("%s DoH", d.ServerName)
 		u := &url.URL{
-			Scheme: schemeHTTPS,
+			Scheme: aghhttp.SchemeHTTPS,
 			Host:   d.ServerName,
 			Path:   path.Join("/dns-query", clientID),
 		}

internal/home/service.go

@@ -11,6 +11,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghos"
 	"github.com/AdguardTeam/AdGuardHome/internal/version"
 	"github.com/AdguardTeam/golibs/errors"
@@ -277,7 +278,7 @@ AdGuard Home is successfully installed and will automatically start on boot.
 There are a few more things that must be configured before you can use it.
 Click on the link below and follow the Installation Wizard steps to finish setup.
 AdGuard Home is now available at the following addresses:`)
-		printHTTPAddresses(schemeHTTP)
+		printHTTPAddresses(aghhttp.SchemeHTTP)
 	}
 }
 

internal/home/tls.go

@@ -26,7 +26,6 @@ import (
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/google/go-cmp/cmp"
-	"golang.org/x/sys/cpu"
 )
 
 var tlsWebHandlersRegistered = false
@@ -754,52 +753,3 @@ func LoadSystemRootCAs() (roots *x509.CertPool) {
 
 	return nil
 }
-
-// InitTLSCiphers performs the same work as initDefaultCipherSuites() from
-// crypto/tls/common.go but don't uses lots of other default ciphers.
-func InitTLSCiphers() (ciphers []uint16) {
-	// Check the cpu flags for each platform that has optimized GCM
-	// implementations.  The worst case is when all these variables are
-	// false.
-	var (
-		hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
-		hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
-		// Keep in sync with crypto/aes/cipher_s390x.go.
-		hasGCMAsmS390X = cpu.S390X.HasAES &&
-			cpu.S390X.HasAESCBC &&
-			cpu.S390X.HasAESCTR &&
-			(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
-
-		hasGCMAsm = hasGCMAsmAMD64 || hasGCMAsmARM64 || hasGCMAsmS390X
-	)
-
-	if hasGCMAsm {
-		// If AES-GCM hardware is provided then prioritize AES-GCM
-		// cipher suites.
-		ciphers = []uint16{
-			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
-		}
-	} else {
-		// Without AES-GCM hardware, we put the ChaCha20-Poly1305 cipher
-		// suites first.
-		ciphers = []uint16{
-			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
-			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-		}
-	}
-
-	return append(
-		ciphers,
-		tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-		tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
-	)
-}

internal/home/upgrade_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
 	"github.com/AdguardTeam/golibs/testutil"
 	"github.com/AdguardTeam/golibs/timeutil"
 	"github.com/stretchr/testify/assert"
@@ -160,7 +161,7 @@ func assertEqualExcept(t *testing.T, oldConf, newConf yobj, oldKeys, newKeys []s
 }
 
 func testDiskConf(schemaVersion int) (diskConf yobj) {
-	filters := []filter{{
+	filters := []filtering.FilterYAML{{
 		URL:        "https://filters.adtidy.org/android/filters/111_optimized.txt",
 		Name:       "Latvian filter",
 		RulesCount: 100,

internal/home/web.go

@@ -9,17 +9,15 @@ import (
 	"sync"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtls"
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/AdguardTeam/golibs/netutil"
 	"github.com/NYTimes/gziphandler"
-)
+	"golang.org/x/net/http2"
-
+	"golang.org/x/net/http2/h2c"
-// HTTP scheme constants.
-const (
-	schemeHTTP  = "http"
-	schemeHTTPS = "https"
 )
 
 const (
@@ -163,15 +161,18 @@ func (web *Web) Start() {
 
 	// this loop is used as an ability to change listening host and/or port
 	for !web.httpsServer.shutdown {
-		printHTTPAddresses(schemeHTTP)
+		printHTTPAddresses(aghhttp.SchemeHTTP)
 		errs := make(chan error, 2)
 
+		// Use an h2c handler to support unencrypted HTTP/2, e.g. for proxies.
+		hdlr := h2c.NewHandler(withMiddlewares(Context.mux, limitRequestBody), &http2.Server{})
+
+		// Create a new instance, because the Web is not usable after Shutdown.
 		hostStr := web.conf.BindHost.String()
-		// we need to have new instance, because after Shutdown() the Server is not usable
 		web.httpServer = &http.Server{
 			ErrorLog:          log.StdLog("web: plain", log.DEBUG),
 			Addr:              netutil.JoinHostPort(hostStr, web.conf.BindPort),
-			Handler:           withMiddlewares(Context.mux, limitRequestBody),
+			Handler:           hdlr,
 			ReadTimeout:       web.conf.ReadTimeout,
 			ReadHeaderTimeout: web.conf.ReadHeaderTimeout,
 			WriteTimeout:      web.conf.WriteTimeout,
@@ -201,10 +202,16 @@ func (web *Web) startBetaServer(hostStr string) {
 		return
 	}
 
+	// Use an h2c handler to support unencrypted HTTP/2, e.g. for proxies.
+	hdlr := h2c.NewHandler(
+		withMiddlewares(Context.mux, limitRequestBody, web.wrapIndexBeta),
+		&http2.Server{},
+	)
+
 	web.httpServerBeta = &http.Server{
 		ErrorLog:          log.StdLog("web: plain: beta", log.DEBUG),
 		Addr:              netutil.JoinHostPort(hostStr, web.conf.BetaBindPort),
-		Handler:           withMiddlewares(Context.mux, limitRequestBody, web.wrapIndexBeta),
+		Handler:           hdlr,
 		ReadTimeout:       web.conf.ReadTimeout,
 		ReadHeaderTimeout: web.conf.ReadHeaderTimeout,
 		WriteTimeout:      web.conf.WriteTimeout,
@@ -264,9 +271,9 @@ func (web *Web) tlsServerLoop() {
 			Addr:     address,
 			TLSConfig: &tls.Config{
 				Certificates: []tls.Certificate{web.httpsServer.cert},
-				MinVersion:   tls.VersionTLS12,
 				RootCAs:      Context.tlsRoots,
-				CipherSuites: Context.tlsCiphers,
+				CipherSuites: aghtls.SaferCipherSuites(),
+				MinVersion:   tls.VersionTLS12,
 			},
 			Handler:           withMiddlewares(Context.mux, limitRequestBody),
 			ReadTimeout:       web.conf.ReadTimeout,
@@ -274,7 +281,7 @@ func (web *Web) tlsServerLoop() {
 			WriteTimeout:      web.conf.WriteTimeout,
 		}
 
-		printHTTPAddresses(schemeHTTPS)
+		printHTTPAddresses(aghhttp.SchemeHTTPS)
 		err := web.httpsServer.server.ListenAndServeTLS("", "")
 		if err != http.ErrServerClosed {
 			cleanupAlways()

internal/tools/go.mod

@@ -9,8 +9,8 @@ require (
 	github.com/kisielk/errcheck v1.6.2
 	github.com/kyoh86/looppointer v0.1.7
 	github.com/securego/gosec/v2 v2.13.1
-	golang.org/x/tools v0.1.13-0.20220803210227-8b9a1fbdf5c3
+	golang.org/x/tools v0.1.13-0.20220921142454-16b974289fe5
-	golang.org/x/vuln v0.0.0-20220912202342-0ed43f12cb05
+	golang.org/x/vuln v0.0.0-20220921153644-d9be10b6cc84
 	honnef.co/go/tools v0.3.3
 	mvdan.cc/gofumpt v0.3.1
 	mvdan.cc/unparam v0.0.0-20220831102321-2fc90a84c7ec
@@ -25,10 +25,10 @@ require (
 	github.com/kyoh86/nolint v0.0.1 // indirect
 	github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354 // indirect
 	github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 // indirect
-	golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 // indirect
+	golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e // indirect
 	golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91 // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220907135952-02c991387e35 // indirect
 	golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde // indirect
-	golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2 // indirect
+	golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )

internal/tools/go.sum

@@ -55,15 +55,15 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
+golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e h1:Ctm9yurWsg7aWwIpH9Bnap/IdSVxixymIb3MhiMEQQA=
-golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
+golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91 h1:Ic/qN6TEifvObMGQy72k0n1LlJr7DjWWEi+MOsDOiSk=
 golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91/go.mod h1:AbB0pIl9nAr9wVwH+Z2ZpaocVmF5I4GyWCDIsVjR0bk=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
+golang.org/x/mod v0.6.0-dev.0.20220907135952-02c991387e35 h1:CZP0Rbk/s1EIiUMx5DS2MhK2ct52xpQxqddVD0FmF+o=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.6.0-dev.0.20220907135952-02c991387e35/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
@@ -86,8 +86,8 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2 h1:wM1k/lXfpc5HdkJJyW9GELpd8ERGdnh8sMGL6Gzq3Ho=
+golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8 h1:h+EGohizhe9XlX18rfpa8k8RAc5XyaeamM+0VHRd4lc=
-golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -100,10 +100,10 @@ golang.org/x/tools v0.0.0-20200710042808-f1c4188a97a1/go.mod h1:njjCfa9FT2d7l9Bc
 golang.org/x/tools v0.0.0-20201007032633-0806396f153e/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
-golang.org/x/tools v0.1.13-0.20220803210227-8b9a1fbdf5c3 h1:aE4T3aJwdCNz+s35ScSQYUzeGu7BOLDHZ1bBHVurqqY=
+golang.org/x/tools v0.1.13-0.20220921142454-16b974289fe5 h1:o1LhIiY5L+hLK9DWqfFlilCrpZnw/s7WU4iCUkb/bao=
-golang.org/x/tools v0.1.13-0.20220803210227-8b9a1fbdf5c3/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.1.13-0.20220921142454-16b974289fe5/go.mod h1:VsjNM1dMo+Ofkp5d7y7fOdQZD8MTXSQ4w3EPk65AvKU=
-golang.org/x/vuln v0.0.0-20220912202342-0ed43f12cb05 h1:NWQHMTdThZhCArzUbnu1Bh+l3LdwUfjZws+ivBR2sxM=
+golang.org/x/vuln v0.0.0-20220921153644-d9be10b6cc84 h1:L0qUjdplndgX880fozFRGC242wAtfsViyRXWGlpZQ54=
-golang.org/x/vuln v0.0.0-20220912202342-0ed43f12cb05/go.mod h1:7tDfEDtOLlzHQRi4Yzfg5seVBSvouUIjyPzBx4q5CxQ=
+golang.org/x/vuln v0.0.0-20220921153644-d9be10b6cc84/go.mod h1:7tDfEDtOLlzHQRi4Yzfg5seVBSvouUIjyPzBx4q5CxQ=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

scripts/make/go-lint.sh

@@ -218,10 +218,7 @@ exit_on_output gofumpt --extra -e -l .
 
 "$GO" vet ./...
 
-# TODO(a.garipov): Reenable this once https://github.com/golang/go/issues/55035
+govulncheck ./...
-# is fixed.
-#
-#	govulncheck ./...
 
 # Apply more lax standards to the code we haven't properly refactored yet.
 gocyclo --over 17 ./internal/querylog/

scripts/make/version.sh

@@ -85,11 +85,7 @@ in
 	# num_commits_since_minor is the number of commits since the last new
 	# minor release.  If the current commit is the new minor release,
 	# num_commits_since_minor is zero.
-	num_commits_since_minor="$( git rev-list "${last_minor_zero}..HEAD" | wc -l )"
+	num_commits_since_minor="$( git rev-list --count "${last_minor_zero}..HEAD" )"
-
-	# The output of darwin's implementation of wc needs to be trimmed from
-	# redundant spaces.
-	num_commits_since_minor="$( echo "$num_commits_since_minor" | tr -d '[:space:]' )"
 	readonly num_commits_since_minor
 
 	# next_minor is the next minor release version.