filtering: imp tests

Merge in DNS/adguard-home from home-imp-code to master

Squashed commit of the following:

commit 459297e189c55393bf0340dd51ec9608d3475e55
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 11:42:34 2023 +0300

    home: imp code

commit ab38e1e80fed7b24fe57d4afdc57b70608f65d73
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 11:01:23 2023 +0300

    all: lint script

commit 7df68b128bf32172ef2e3bf7116f4f72a97baa2b
Merge: bcb482714 db52f7a3a
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 10:59:40 2023 +0300

    Merge remote-tracking branch 'origin/master' into home-imp-code

commit bcb482714780da882e69c261be08511ea4f36f3b
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 13:48:27 2023 +0300

    all: lint script

commit 1c017f27715202ec1f40881f069a96f11f9822e8
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 13:45:25 2023 +0300

    all: lint script

commit ee3d427a7d6ee7e377e67c5eb99eebc7fb1e6acc
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 13:44:53 2023 +0300

    home: imp code

commit bc50430469123415216e60e178bd8e30fc229300
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 13:12:10 2023 +0300

    home: imp code

commit fc07e416aeab2612e68cf0e3f933aaed95931115
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 11:42:32 2023 +0300

    aghos: service precheck

commit a68480fd9c4cd6f3c89210bee6917c53074f7a82
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 4 11:07:05 2023 +0300

    home: imp code

commit 61b743a340ac1564c48212452c7a9acd1808d352
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 17:17:21 2023 +0300

    all: lint script

commit c6fe620510c4af5b65456e90cb3424831334e004
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 17:16:37 2023 +0300

    home: imp code

commit 4b2fb47ea9c932054ccc72b1fd1d11793c93e39c
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 16:55:44 2023 +0300

    home: imp code

commit 63df3e2ab58482920a074cfd5f4188e49a0f8448
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 16:25:38 2023 +0300

    home: imp code

commit c7f1502f976482c2891e0c64426218b549585e83
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 15:54:30 2023 +0300

    home: imp code

commit c64cdaf1c82495bb70d9cdcaf7be9eeee9a7c773
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 14:35:04 2023 +0300

    home: imp code

commit a50436e040b3a064ef51d5f936b879fe8de72d41
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 14:24:02 2023 +0300

    home: imp code

commit 2b66464f472df732ea27cbbe5ac5c673a13bc14b
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 14:11:53 2023 +0300

    home: imp code

commit 713ce2963c210887faa0a06e41e01e4ebbf96894
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 3 14:10:54 2023 +0300

    home: imp code

.github/workflows/build.yml

@@ -1,7 +1,7 @@
 'name': 'build'
 
 'env':
-  'GO_VERSION': '1.19.10'
+  'GO_VERSION': '1.19.8'
   'NODE_VERSION': '14'
 
 'on':

.github/workflows/lint.yml

@@ -1,7 +1,7 @@
 'name': 'lint'
 
 'env':
-  'GO_VERSION': '1.19.10'
+  'GO_VERSION': '1.19.8'
 
 'on':
   'push':

CHANGELOG.md

@@ -14,55 +14,14 @@ and this project adheres to
 <!--
 ## [v0.108.0] - TBA
 
-## [v0.107.32] - 2023-06-28 (APPROX.)
-
-See also the [v0.107.32 GitHub milestone][ms-v0.107.32].
-
-[ms-v0.107.32]: https://github.com/AdguardTeam/AdGuardHome/milestone/68?closed=1
-
-NOTE: Add new changes BELOW THIS COMMENT.
--->
-
-### Added
-
-- The ability to edit rewrite rules via `PUT /control/rewrite/update` HTTP API
-  ([#1577]).
-
-[#1577]: https://github.com/AdguardTeam/AdGuardHome/issues/1577
-
-<!--
-NOTE: Add new changes ABOVE THIS COMMENT.
--->
-
-
-
-## [v0.107.31] - 2023-06-08
-
-See also the [v0.107.31 GitHub milestone][ms-v0.107.31].
-
-### Fixed
-
-- Startup errors on OpenWrt ([#5872]).
-- Plain-UDP upstreams always falling back to TCP, causing outages and slowdowns
-  ([#5873], [#5874]).
-
-[#5872]: https://github.com/AdguardTeam/AdGuardHome/issues/5872
-[#5873]: https://github.com/AdguardTeam/AdGuardHome/issues/5873
-[#5874]: https://github.com/AdguardTeam/AdGuardHome/issues/5874
-
-[ms-v0.107.31]: https://github.com/AdguardTeam/AdGuardHome/milestone/67?closed=1
-
-
-
-## [v0.107.30] - 2023-06-07
+## [v0.107.30] - 2023-04-26 (APPROX.)
 
 See also the [v0.107.30 GitHub milestone][ms-v0.107.30].
 
-### Security
+[ms-v0.107.30]: https://github.com/AdguardTeam/AdGuardHome/milestone/66?closed=1
 
-- Go version has been updated to prevent the possibility of exploiting the
-  CVE-2023-29402, CVE-2023-29403, and CVE-2023-29404 Go vulnerabilities fixed in
-  [Go 1.19.10][go-1.19.10].
+NOTE: Add new changes BELOW THIS COMMENT.
+-->
 
 ### Fixed
 
@@ -78,8 +37,9 @@ See also the [v0.107.30 GitHub milestone][ms-v0.107.30].
 
 [#5716]: https://github.com/AdguardTeam/AdGuardHome/issues/5716
 
-[go-1.19.10]:   https://groups.google.com/g/golang-announce/c/q5135a9d924/m/j0ZoAJOHAwAJ
-[ms-v0.107.30]: https://github.com/AdguardTeam/AdGuardHome/milestone/66?closed=1
+<!--
+NOTE: Add new changes ABOVE THIS COMMENT.
+-->
 
 
 
@@ -2004,13 +1964,11 @@ See also the [v0.104.2 GitHub milestone][ms-v0.104.2].
 
 
 <!--
-[Unreleased]: https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.32...HEAD
-[v0.107.32]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.31...v0.107.32
+[Unreleased]: https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.30...HEAD
+[v0.107.30]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.29...v0.107.30
 -->
 
-[Unreleased]: https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.31...HEAD
-[v0.107.31]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.30...v0.107.31
-[v0.107.30]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.29...v0.107.30
+[Unreleased]: https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.29...HEAD
 [v0.107.29]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.28...v0.107.29
 [v0.107.28]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.27...v0.107.28
 [v0.107.27]:  https://github.com/AdguardTeam/AdGuardHome/compare/v0.107.26...v0.107.27

Makefile

@@ -37,6 +37,8 @@ SIGN = 1
 VERSION = v0.0.0
 YARN = yarn
 
+NEXTAPI = 0
+
 # Macros for the build-release target.  If FRONTEND_PREBUILT is 0, the
 # default, the macro $(BUILD_RELEASE_DEPS_$(FRONTEND_PREBUILT)) expands
 # into BUILD_RELEASE_DEPS_0, and so both frontend and backend
@@ -64,6 +66,7 @@ ENV = env\
 	PATH="$${PWD}/bin:$$( "$(GO.MACRO)" env GOPATH )/bin:$${PATH}"\
 	RACE='$(RACE)'\
 	SIGN='$(SIGN)'\
+	NEXTAPI='$(NEXTAPI)'\
 	VERBOSE="$(VERBOSE.MACRO)"\
 	VERSION='$(VERSION)'\
 

README.md

@@ -466,10 +466,6 @@ bug or implementing the feature.
     Home](https://github.com/ebrianne/adguard-exporter) by
     [@ebrianne](https://github.com/ebrianne).
 
- *  [Terminal-based, real-time traffic monitoring and statistics for your AdGuard Home
-    instance](https://github.com/Lissy93/AdGuardian-Term) by
-    [@Lissy93](https://github.com/Lissy93)
-
  *  [AdGuard Home on GLInet
     routers](https://forum.gl-inet.com/t/adguardhome-on-gl-routers/10664) by
     [Gl-Inet](https://gl-inet.com/).

bamboo-specs/release.yaml

@@ -7,7 +7,7 @@
 # Make sure to sync any changes with the branch overrides below.
 'variables':
   'channel': 'edge'
-  'dockerGo': 'adguard/golang-ubuntu:6.7'
+  'dockerGo': 'adguard/golang-ubuntu:6.3'
 
 'stages':
 - 'Build frontend':
@@ -232,24 +232,25 @@
         case "$channel"
         in
         ('release')
-                snapchannel='candidate'
-                ;;
+              snapchannel='candidate'
+              ;;
         ('beta')
-                snapchannel='beta'
-                ;;
+              snapchannel='beta'
+              ;;
         ('edge')
-                snapchannel='edge'
-                ;;
+              snapchannel='edge'
+              ;;
         (*)
-                echo "invalid channel '$channel'"
-                exit 1
-                ;;
+              echo "invalid channel '$channel'"
+              exit 1
+              ;;
         esac
 
         env\
                 SNAPCRAFT_CHANNEL="$snapchannel"\
                 SNAPCRAFT_EMAIL="${bamboo.snapcraftEmail}"\
-                SNAPCRAFT_STORE_CREDENTIALS="${bamboo.snapcraftMacaroonPassword}"\
+                SNAPCRAFT_MACAROON="${bamboo.snapcraftMacaroonPassword}"\
+                SNAPCRAFT_UBUNTU_DISCHARGE="${bamboo.snapcraftUbuntuDischargePassword}"\
                 ../bamboo-deploy-publisher/deploy.sh adguard-home-snap
   'final-tasks':
   - 'clean'
@@ -279,9 +280,9 @@
 
         if [ "$channel" != 'release' ] && [ "${channel}" != 'beta' ]
         then
-                echo "don't publish to GitHub Releases for this channel"
+              echo "don't publish to GitHub Releases for this channel"
 
-                exit 0
+              exit 0
         fi
 
         cd ./dist/
@@ -330,7 +331,7 @@
     # need to build a few of these.
     'variables':
       'channel': 'beta'
-      'dockerGo': 'adguard/golang-ubuntu:6.7'
+      'dockerGo': 'adguard/golang-ubuntu:6.3'
 # release-vX.Y.Z branches are the branches from which the actual final release
 # is built.
 - '^release-v[0-9]+\.[0-9]+\.[0-9]+':
@@ -345,4 +346,4 @@
     # are the ones that actually get released.
     'variables':
       'channel': 'release'
-      'dockerGo': 'adguard/golang-ubuntu:6.7'
+      'dockerGo': 'adguard/golang-ubuntu:6.3'

bamboo-specs/test.yaml

@@ -5,7 +5,7 @@
   'key': 'AHBRTSPECS'
   'name': 'AdGuard Home - Build and run tests'
 'variables':
-  'dockerGo': 'adguard/golang-ubuntu:6.7'
+  'dockerGo': 'adguard/golang-ubuntu:6.3'
 
 'stages':
 - 'Tests':

client/src/__locales/be.json

@@ -150,7 +150,7 @@
     "dns_allowlists": "Белыя спісы DNS",
     "dns_blocklists_desc": "AdGuard Home будзе блакаваць дамены з чорных спісаў.",
     "dns_allowlists_desc": "Дамены з белых спісаў DNS будуць дазволены, нават калі яны знаходзяцца ў любым з чорных спісаў.",
-    "custom_filtering_rules": "Карыстальніцкія правілы фільтрацыі",
+    "custom_filtering_rules": "Карыстацкія правілы фільтрацыі",
     "encryption_settings": "Налады шыфравання",
     "dhcp_settings": "Налады DHCP",
     "upstream_dns": "Upstream DNS-серверы",
@@ -247,7 +247,7 @@
     "loading_table_status": "Загрузка...",
     "page_table_footer_text": "Старонка",
     "rows_table_footer_text": "радкоў",
-    "updated_custom_filtering_toast": "Карыстальніцкія правілы паспяхова захаваны",
+    "updated_custom_filtering_toast": "Занесены змены ў карыстацкія правілы",
     "rule_removed_from_custom_filtering_toast": "Карыстацкае правіла выдалена: {{rule}}",
     "rule_added_to_custom_filtering_toast": "Карыстацкае правіла дададзена: {{rule}}",
     "query_log_response_status": "Статус: {{value}}",
@@ -568,7 +568,7 @@
     "check_desc": "Праверыць фільтрацыю імя хаста",
     "check": "Праверыць",
     "form_enter_host": "Увядзіце імя хаста",
-    "filtered_custom_rules": "Адфільтраваны з дапамогай карыстальніцкіх правіл фільтрацыі",
+    "filtered_custom_rules": "Адфільтраваны з дапамогай карыстацкіх правілаў фільтрацыі",
     "choose_from_list": "Абраць са спіса",
     "add_custom_list": "Дадаць свой спіс",
     "host_whitelisted": "Хост занесены ў белы спіс",

client/src/__locales/fa.json

@@ -268,8 +268,6 @@
     "blocking_mode_nxdomain": "NXDOMAIN: پاسخ با کُد NXDOMAIN",
     "blocking_mode_null_ip": "Null IP: پاسخ با آدرس آی پی صفر(0.0.0.0 برای A; :: برای AAAA)",
     "blocking_mode_custom_ip": "آی پی دستی: پاسخ با آدرس آی پی دستی تنظیم شده",
-    "theme_light": "پوسته روشن",
-    "theme_dark": "پوسته تیره",
     "upstream_dns_client_desc": "اگر این فیلد را خالی نگه دارید، AdGuard Home از سرور پیکربندی شده در <0> تنظیماتDNS </0> استفاده می کند.",
     "tracker_source": "منبع ردیاب",
     "source_label": "منبع",
@@ -569,6 +567,5 @@
     "use_saved_key": "از کلید ذخیره شده قبلی استفاده کنید",
     "parental_control": "نظارت والدین",
     "safe_browsing": "وب گردی اَمن",
-    "form_error_password_length": "رمزعبور باید حداقل {{value}} کاراکتر باشد.",
-    "protection_section_label": "حفاظت"
+    "form_error_password_length": "رمزعبور باید حداقل {{value}} کاراکتر باشد."
 }

client/src/__locales/fi.json

@@ -86,7 +86,7 @@
     "request_details": "Pyynnön tiedot",
     "client_details": "Päätelaitteen tiedot",
     "details": "Yksityiskohdat",
-    "back": "Palaa takaisin",
+    "back": "Takaisin",
     "dashboard": "Tila",
     "settings": "Asetukset",
     "filters": "Suodattimet",
@@ -146,8 +146,8 @@
     "no_servers_specified": "Palvelimia ei ole määritetty",
     "general_settings": "Yleiset asetukset",
     "dns_settings": "DNS-asetukset",
-    "dns_blocklists": "DNS-estot",
-    "dns_allowlists": "DNS-sallinnat",
+    "dns_blocklists": "DNS-estolistat",
+    "dns_allowlists": "DNS-sallittujen listat",
     "dns_blocklists_desc": "AdGuard Home estää estolistalla olevat verkkotunnukset.",
     "dns_allowlists_desc": "DNS-sallittujen listalla olevat verkkotunnukset sallitaan myös silloin, jos ne ovat jollain muulla estolistalla.",
     "custom_filtering_rules": "Omat suodatussäännöt",
@@ -627,7 +627,7 @@
     "cache_optimistic": "Optimistinen välimuisti",
     "cache_optimistic_desc": "Pakota AdGuard Home vastaamaan välimuistista vaikka tiedot olisivat vanhentuneet. Pyri samalla myös päivittämään tiedot.",
     "filter_category_general": "Yleiset",
-    "filter_category_security": "Tietoturva",
+    "filter_category_security": "Turvallisuus",
     "filter_category_regional": "Alueelliset",
     "filter_category_other": "Muut",
     "filter_category_general_desc": "Listat, jotka estävät seurannan ja mainokset useimmilla laitteilla",

client/src/__locales/no.json

@@ -282,8 +282,6 @@
     "blocking_mode_null_ip": "Null IP: Svar med en 0-IP-adresse (0.0.0.0 for A; :: for AAAA)",
     "blocking_mode_custom_ip": "Tilpasset IP: Svar med en manuelt valgt IP-adresse",
     "theme_auto": "Auto",
-    "theme_light": "Lyst tema",
-    "theme_dark": "Mørkt tema",
     "upstream_dns_client_desc": "Hvis dette feltet holdes tomt, vil AdGuard Home bruke tjenerne som er satt opp i <0>DNS-innstillingene</0>.",
     "tracker_source": "Sporerkilde",
     "source_label": "Kilde",

client/src/__locales/pl.json

@@ -222,7 +222,7 @@
     "all_lists_up_to_date_toast": "Wszystkie listy są już aktualne",
     "updated_upstream_dns_toast": "Serwery nadrzędne zostały pomyślnie zapisane",
     "dns_test_ok_toast": "Określone serwery DNS działają poprawnie",
-    "dns_test_not_ok_toast": "Serwer \"{{key}}\": nie może być użyte, sprawdź, czy zapisano go poprawnie",
+    "dns_test_not_ok_toast": "Serwer \"{{key}}\": nie można go użyć, sprawdź, czy napisałeś go poprawnie",
     "dns_test_warning_toast": "Upstream \"{{key}}\" nie odpowiada na zapytania testowe i może nie działać prawidłowo",
     "unblock": "Odblokuj",
     "block": "Zablokuj",
@@ -346,7 +346,7 @@
     "install_devices_windows_list_2": "Przejdź do kategorii Sieć i Internet, a następnie do Centrum sieci i udostępniania.",
     "install_devices_windows_list_3": "W lewym panelu kliknij \"Zmień ustawienia adaptera\".",
     "install_devices_windows_list_4": "Kliknij prawym przyciskiem myszy aktywne połączenie i wybierz Właściwości.",
-    "install_devices_windows_list_5": "Znajdź na liście \"Protokół internetowy w wersji 4 (TCP/IPv4)\" (lub w przypadku IPv6 \"Protokół internetowy w wersji 6 (TCP/IPv6)\"), zaznacz go i ponownie kliknij Właściwości.",
+    "install_devices_windows_list_5": "Znajdź na liście \"Protokół internetowy w wersji 4 (TCP/IPv4)\" (lub w przypadku IPv6 \"Protokół internetowy w wersji 6 (TCP/IPv6)\"), zaznacz go i ponownie kliknij na Właściwości.",
     "install_devices_windows_list_6": "Wybierz opcję \"Użyj następujących adresów serwerów DNS\" i wprowadź adresy serwerów AdGuard Home.",
     "install_devices_macos_list_1": "Kliknij ikonę Apple i przejdź do Preferencje systemowe.",
     "install_devices_macos_list_2": "Kliknij Sieć.",
@@ -396,7 +396,7 @@
     "encryption_issuer": "Zgłaszający",
     "encryption_hostnames": "Nazwy hostów",
     "encryption_reset": "Czy na pewno chcesz zresetować ustawienia szyfrowania?",
-    "encryption_warning": "Uwaga",
+    "encryption_warning": "Uwaga!",
     "topline_expiring_certificate": "Twój certyfikat SSL wkrótce wygaśnie. Zaktualizuj <0>Ustawienia szyfrowania</0>.",
     "topline_expired_certificate": "Twój certyfikat SSL wygasł. Zaktualizuj <0>Ustawienia szyfrowania</0>.",
     "form_error_port_range": "Wpisz numer portu z zakresu 80-65535",
@@ -542,7 +542,7 @@
     "password_placeholder": "Wpisz hasło",
     "sign_in": "Zaloguj się",
     "sign_out": "Wyloguj się",
-    "forgot_password": "Zapomniano hasła?",
+    "forgot_password": "Zapomniałeś hasła?",
     "forgot_password_desc": "Wykonaj <0>te kroki</0>, aby utworzyć nowe hasło do konta użytkownika.",
     "location": "Lokalizacja",
     "orgname": "Nazwa firmy",

client/src/__locales/pt-br.json

@@ -529,7 +529,7 @@
     "ignore_domains": "Domínios ignorados (separados por nova linha)",
     "ignore_domains_title": "Domínios ignorados",
     "ignore_domains_desc_stats": "As consultas para esses domínios não são gravadas nas estatísticas",
-    "ignore_domains_desc_query": "As consultas para esses domínios não são gravadas no registro de consulta",
+    "ignore_domains_desc_query": "As consultas para esses domínios não são gravadas no log de consulta",
     "interval_hours": "{{count}} hora",
     "interval_hours_plural": "{{count}} horas",
     "filters_configuration": "Configuração de filtros",

client/src/__locales/pt-pt.json

@@ -529,7 +529,7 @@
     "ignore_domains": "Domínios ignorados (separados por nova linha)",
     "ignore_domains_title": "Domínios ignorados",
     "ignore_domains_desc_stats": "As consultas para estes domínios não aparecem nas estatísticas",
-    "ignore_domains_desc_query": "As consultas para estes domínios não aparecem no registo de consultas",
+    "ignore_domains_desc_query": "As consultas para estes domínios nãoaparecem no registo de consultas",
     "interval_hours": "{{count}} hora",
     "interval_hours_plural": "{{count}} horas",
     "filters_configuration": "Definição dos filtros",

client/src/__locales/uk.json

@@ -167,7 +167,6 @@
     "enabled_parental_toast": "«Батьківський контроль» увімкнено",
     "disabled_safe_search_toast": "Безпечний пошук вимкнено",
     "enabled_save_search_toast": "Безпечний пошук увімкнено",
-    "updated_save_search_toast": "Налаштування Безпечного пошуку оновлено",
     "enabled_table_header": "Увімкнено",
     "name_table_header": "Назва",
     "list_url_table_header": "URL списку",
@@ -291,8 +290,6 @@
     "rate_limit": "Обмеження швидкості",
     "edns_enable": "Увімкнути відправку EDNS Client Subnet",
     "edns_cs_desc": "Додавати параметр EDNS Client Subnet (ECS) до запитів до upstream-серверів, а також записувати в журнал значення, що надсилаються клієнтами.",
-    "edns_use_custom_ip": "Використання користувацької IP-адреси для EDNS",
-    "edns_use_custom_ip_desc": "Дозволити використовувати користувацьку IP-адресу для EDNS",
     "rate_limit_desc": "Кількість запитів в секунду, які може робити один клієнт. Встановлене значення «0» означатиме необмежену кількість.",
     "blocking_ipv4_desc": "IP-адреса, яку потрібно видати для заблокованого A запиту",
     "blocking_ipv6_desc": "IP-адреса, яку потрібно видати для заблокованого АААА запиту",
@@ -526,10 +523,6 @@
     "statistics_retention_confirm": "Ви впевнені, що хочете змінити тривалість статистики? Якщо зменшити значення інтервалу, деякі дані будуть втрачені",
     "statistics_cleared": "Статистику успішно очищено",
     "statistics_enable": "Увімкнути статистику",
-    "ignore_domains": "Ігноровані домени (по одному на рядок)",
-    "ignore_domains_title": "Ігноровані домени",
-    "ignore_domains_desc_stats": "Запити для цих доменів в статистику не пишуться",
-    "ignore_domains_desc_query": "Запити для цих доменів не записуються до журналу запитів",
     "interval_hours": "{{count}} година",
     "interval_hours_plural": "{{count}} годин(и)",
     "filters_configuration": "Конфігурація фільтрів",
@@ -650,29 +643,5 @@
     "confirm_dns_cache_clear": "Ви впевнені, що бажаєте очистити кеш DNS?",
     "cache_cleared": "Кеш DNS успішно очищено",
     "clear_cache": "Очистити кеш",
-    "make_static": "Зробити статичним",
-    "theme_auto_desc": "Автоматична (на основі теми вашого пристрою)",
-    "theme_dark_desc": "Темна тема",
-    "theme_light_desc": "Світла тема",
-    "disable_for_seconds": "На {{count}} секунду",
-    "disable_for_seconds_plural": "На {{count}} секунд",
-    "disable_for_minutes": "На {{count}} хвилину",
-    "disable_for_minutes_plural": "На {{count}} хвилин",
-    "disable_for_hours": "На {{count}} годину",
-    "disable_for_hours_plural": "На {{count}} годин",
-    "disable_until_tomorrow": "До завтра",
-    "disable_notify_for_seconds": "Вимкнення захисту на {{count}} секунду",
-    "disable_notify_for_seconds_plural": "Вимкнення захисту на {{count}} секунд",
-    "disable_notify_for_minutes": "Вимкнення захисту на {{count}} хвилину",
-    "disable_notify_for_minutes_plural": "Вимкнення захисту на {{count}} хвилин",
-    "disable_notify_for_hours": "Вимкнення захисту на {{count}} годину",
-    "disable_notify_for_hours_plural": "Вимкнення захисту на {{count}} годин",
-    "disable_notify_until_tomorrow": "Відключення захисту до завтра",
-    "enable_protection_timer": "Захист буде ввімкнено о {{time}}",
-    "custom_retention_input": "Введіть час в годинах",
-    "custom_rotation_input": "Введіть час в годинах",
-    "protection_section_label": "Захист",
-    "log_and_stats_section_label": "Журнал запитів і статистика",
-    "ignore_query_log": "Ігнорувати цей клієнт у журналі запитів",
-    "ignore_statistics": "Ігноруйте цей клієнт в статистиці"
+    "protection_section_label": "Захист"
 }

client/src/helpers/filters/filters.js

@@ -100,12 +100,6 @@ export default {
             "homepage": "https://github.com/DandelionSprout/adfilt",
             "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_13.txt"
         },
-        "POL_cert_polska_list_of_malicious_domains": {
-            "name": "POL: CERT Polska List of malicious domains",
-            "categoryId": "regional",
-            "homepage": "https://cert.pl/posts/2020/03/ostrzezenia_phishing/",
-            "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_41.txt"
-        },
         "POL_polish_filters_for_pi_hole": {
             "name": "POL: Polish filters for Pi-hole",
             "categoryId": "regional",
@@ -124,12 +118,6 @@ export default {
             "homepage": "https://github.com/bkrucarci/turk-adlist",
             "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_26.txt"
         },
-        "TUR_turkish_ad_hosts": {
-            "name": "TUR: Turkish Ad Hosts",
-            "categoryId": "regional",
-            "homepage": "https://github.com/symbuzzer/Turkish-Ad-Hosts",
-            "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_40.txt"
-        },
         "VNM_abpvn": {
             "name": "VNM: ABPVN List",
             "categoryId": "regional",
@@ -226,12 +214,6 @@ export default {
             "homepage": "https://github.com/durablenapkin/scamblocklist",
             "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_10.txt"
         },
-        "shadowwhisperers_malware_list": {
-            "name": "ShadowWhisperer's Malware List",
-            "categoryId": "security",
-            "homepage": "https://github.com/ShadowWhisperer/BlockLists",
-            "source": "https://adguardteam.github.io/HostlistsRegistry/assets/filter_42.txt"
-        },
         "staklerware_indicators_list": {
             "name": "Stalkerware Indicators List",
             "categoryId": "security",

client/src/helpers/trackers/trackers.json

@@ -1,5 +1,5 @@
 {
-    "timeUpdated": "2023-06-01T00:12:12.660Z",
+    "timeUpdated": "2023-04-06T10:46:09.881Z",
     "categories": {
         "0": "audio_video_player",
         "1": "comments",
@@ -19526,13 +19526,6 @@
             "companyId": "qualcomm",
             "source": "AdGuard"
         },
-        "qualcomm_location_service": {
-            "name": "Qualcomm Location Service",
-            "categoryId": 15,
-            "url": "https://www.qualcomm.com/site/privacy/services",
-            "companyId": "qualcomm",
-            "source": "AdGuard"
-        },
         "recaptcha": {
             "name": "reCAPTCHA",
             "categoryId": 8,
@@ -19540,55 +19533,6 @@
             "companyId": "google",
             "source": "AdGuard"
         },
-        "samsung": {
-            "name": "Samsung",
-            "categoryId": 8,
-            "url": "https://www.samsung.com/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungads": {
-            "name": "Samsung Ads",
-            "categoryId": 4,
-            "url": "https://www.samsung.com/business/samsungads/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungapps": {
-            "name": "Samsung Apps",
-            "categoryId": 101,
-            "url": "https://www.samsung.com/au/apps/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungmobile": {
-            "name": "Samsung Mobile",
-            "categoryId": 101,
-            "url": "https://www.samsung.com/mobile/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungpush": {
-            "name": "Samsung Push",
-            "categoryId": 8,
-            "url": null,
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungsds": {
-            "name": "Samsung SDS",
-            "categoryId": 10,
-            "url": "https://www.samsungsds.com/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
-        "samsungtv": {
-            "name": "Samsung TV",
-            "categoryId": 15,
-            "url": "https://www.samsung.com/au/tvs/",
-            "companyId": "samsung",
-            "source": "AdGuard"
-        },
         "sectigo": {
             "name": "Sectigo Limited",
             "categoryId": 5,
@@ -19645,13 +19589,6 @@
             "companyId": "telstra",
             "source": "AdGuard"
         },
-        "ubuntu": {
-            "name": "Ubuntu",
-            "categoryId": 8,
-            "url": "https://ubuntu.com/",
-            "companyId": "ubuntu",
-            "source": "AdGuard"
-        },
         "unity_ads": {
             "name": "Unity Ads",
             "categoryId": 4,
@@ -19714,13 +19651,6 @@
             "url": "https://www.3gpp.org/",
             "companyId": "3gpp",
             "source": "AdGuard"
-        },
-        "7plus": {
-            "name": "7plus",
-            "categoryId": 0,
-            "url": "https://7plus.com.au/",
-            "companyId": "7plus",
-            "source": "AdGuard"
         }
     },
     "trackerDomains": {
@@ -19913,8 +19843,8 @@
         "adfreestyle.pl": "adfreestyle",
         "adfront.org": "adfront",
         "adfrontiers.com": "adfrontiers",
-        "adgear.com": "samsungads",
-        "adgrx.com": "samsungads",
+        "adgear.com": "adgear",
+        "adgrx.com": "adgear",
         "adgebra.co.in": "adgebra",
         "adgenie.co.uk": "adgenie",
         "ad.adgile.com": "adgile",
@@ -24126,10 +24056,6 @@
         "safebrowsing.g.applimg.com": "apple",
         "applvn.com": "applovin",
         "applovin.com": "applovin",
-        "bitbucket.org": "atlassian.net",
-        "jira.com": "atlassian.net",
-        "ss-inf.net": "atlassian.net",
-        "stspg-customer.com": "statuspage.io",
         "blob.core.windows.net": "azure_blob_storage",
         "azure.com": "azure",
         "trafficmanager.net": "azure",
@@ -24137,21 +24063,6 @@
         "mobileapptracking.com": "branch",
         "bttn.io": "button",
         "cloudflare-dns.com": "cloudflare",
-        "cloudflare-dm-cmpimg.com": "cloudflare",
-        "cloudflare-ipfs.com": "cloudflare",
-        "cloudflare-quic.com": "cloudflare",
-        "cloudflare-terms-of-service-abuse.com": "cloudflare",
-        "cloudflare.tv": "cloudflare",
-        "cloudflareaccess.com": "cloudflare",
-        "cloudflareclient.com": "cloudflare",
-        "cloudflareinsights.com": "cloudflare",
-        "cloudflareok.com": "cloudflare",
-        "cloudflareportal.com": "cloudflare",
-        "cloudflareresolve.com": "cloudflare",
-        "cloudflaressl.com": "cloudflare",
-        "cloudflarestatus.com": "cloudflare",
-        "pacloudflare.com": "cloudflare",
-        "sn-cloudflare.com": "cloudflare",
         "crashlytics.com": "crashlytics",
         "phicdn.net": "digicert_trust_seal",
         "domain.glass": "domainglass",
@@ -24181,9 +24092,6 @@
         "qy.net": "iqiyi",
         "iqiyi.com": "iqiyi",
         "iq.com": "iqiyi",
-        "ironsrc.com": "ironsource",
-        "ironsrc.net": "ironsource",
-        "supersonicads.com": "ironsource",
         "karambasecurity.com": "karambasecurity",
         "kik.com": "kik",
         "apikik.com": "kik",
@@ -24213,23 +24121,6 @@
         "mozilla.com": "mozilla",
         "mozilla.net": "mozilla",
         "mozilla.org": "mozilla",
-        "flxvpn.net": "netflix",
-        "netflix.ca": "netflix",
-        "netflix.com.au": "netflix",
-        "netflix.net": "netflix",
-        "netflixdnstest1.com": "netflix",
-        "netflixdnstest10.com": "netflix",
-        "netflixdnstest2.com": "netflix",
-        "netflixdnstest3.com": "netflix",
-        "netflixdnstest4.com": "netflix",
-        "netflixdnstest5.com": "netflix",
-        "netflixdnstest6.com": "netflix",
-        "netflixdnstest7.com": "netflix",
-        "netflixdnstest8.com": "netflix",
-        "netflixdnstest9.com": "netflix",
-        "netflixinvestor.com": "netflix",
-        "netflixstudios.com": "netflix",
-        "netflixtechblog.com": "netflix",
         "nflximg.com": "netflix",
         "netify.ai": "netify",
         "nab.com": "nab",
@@ -24253,69 +24144,9 @@
         "oztam.com.au": "oztam",
         "plex.tv": "plex",
         "plex.direct": "plex",
+        "xtracloud.net": "qualcomm",
         "qualcomm.com": "qualcomm",
-        "gpsonextra.net": "qualcomm_location_service",
-        "izatcloud.net": "qualcomm_location_service",
-        "xtracloud.net": "qualcomm_location_service",
         "recaptcha.net": "recaptcha",
-        "samsungacr.com": "samsungads",
-        "samsungadhub.com": "samsungads",
-        "samsungads.com": "samsungads",
-        "samsungtifa.com": "samsungads",
-        "game-mode.net": "samsung",
-        "gos-gsp.io": "samsung",
-        "lldns.net": "samsung",
-        "pavv.co.kr": "samsung",
-        "remotesamsung.com": "samsung",
-        "samsung-gamelauncher.com": "samsung",
-        "samsung.co.kr": "samsung",
-        "samsung.com": "samsung",
-        "samsung.com.cn": "samsung",
-        "samsungcloud.com": "samsung",
-        "samsungcloudcdn.com": "samsung",
-        "samsungcloudprint.com": "samsung",
-        "samsungcloudsolution.com": "samsung",
-        "samsungcloudsolution.net": "samsung",
-        "samsungelectronics.com": "samsung",
-        "samsunghealth.com": "samsung",
-        "samsungiotcloud.com": "samsung",
-        "samsungknox.com": "samsung",
-        "samsungnyc.com": "samsung",
-        "samsungosp.com": "samsung",
-        "samsungotn.net": "samsung",
-        "samsungpositioning.com": "samsung",
-        "samsungqbe.com": "samsung",
-        "samsungrm.net": "samsung",
-        "samsungrs.com": "samsung",
-        "samsungsemi.com": "samsung",
-        "samsungsetup.com": "samsung",
-        "samsungusa.com": "samsung",
-        "secb2b.com": "samsung",
-        "smartthings.com": "samsung",
-        "ospserver.net": "samsungmobile",
-        "samsungdms.net": "samsungmobile",
-        "samsungmax.com": "samsungmobile",
-        "samsungmobile.com": "samsungmobile",
-        "secmobilesvc.com": "samsungmobile",
-        "internetat.tv": "samsungtv",
-        "samsungcloud.tv": "samsungtv",
-        "samsungsds.com": "samsungsds",
-        "push.samsungosp.com": "samsungpush",
-        "pushmessage.samsung.com": "samsungpush",
-        "scs.samsungqbe.com": "samsungpush",
-        "ssp.samsung.com": "samsungpush",
-        "aibixby.com": "samsungapps",
-        "findmymobile.samsung.com": "samsungapps",
-        "samsapps.cust.lldns.net": "samsungapps",
-        "samsung-omc.com": "samsungapps",
-        "samsungapps.com": "samsungapps",
-        "samsungdiroute.net": "samsungapps",
-        "samsungdive.com": "samsungapps",
-        "samsungdm.com": "samsungapps",
-        "samsungdmroute.com": "samsungapps",
-        "samsungmdec.com": "samsungapps",
-        "samsungvisioncloud.com": "samsungapps",
-        "sbixby.com": "samsungapps",
         "sectigo.com": "sectigo",
         "showrss.info": "showrss",
         "similarweb.io": "similarweb",
@@ -24340,13 +24171,6 @@
         "telstra.com.au": "telstra",
         "telstra.com": "telstra",
         "usertrust.com": "trustlogo",
-        "canonical.com": "ubuntu",
-        "launchpad.net": "ubuntu",
-        "launchpadcontent.net": "ubuntu",
-        "snapcraft.io": "ubuntu",
-        "snapcraftcontent.com": "ubuntu",
-        "ubuntu.com": "ubuntu",
-        "ubuntucompanyservices.co.za": "ubuntu",
         "unityads.unity3d.com": "unity_ads",
         "exp-tas.com": "vscode",
         "vscode-unpkg.net": "vscode",
@@ -24366,7 +24190,6 @@
         "yandex.kz": "yandex",
         "appmetrica.yandex.com": "yandex_appmetrica",
         "3gppnetwork.org": "3gpp",
-        "3gpp.org": "3gpp",
-        "swm.digital": "7plus"
+        "3gpp.org": "3gpp"
     }
 }

go.mod

@@ -3,36 +3,37 @@ module github.com/AdguardTeam/AdGuardHome
 go 1.19
 
 require (
-	github.com/AdguardTeam/dnsproxy v0.50.1
+	github.com/AdguardTeam/dnsproxy v0.49.1
 	github.com/AdguardTeam/golibs v0.13.2
 	github.com/AdguardTeam/urlfilter v0.16.1
 	github.com/NYTimes/gziphandler v1.1.1
 	github.com/ameshkov/dnscrypt/v2 v2.2.7
 	github.com/digineo/go-ipset/v2 v2.2.1
+	github.com/dimfeld/httptreemux/v5 v5.5.0
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/go-ping/ping v1.1.0
 	github.com/google/go-cmp v0.5.9
 	github.com/google/gopacket v1.1.19
 	github.com/google/renameio v1.0.1
 	github.com/google/uuid v1.3.0
-	github.com/insomniacslk/dhcp v0.0.0-20230516061539-49801966e6cb
+	github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8
 	github.com/josharian/native v1.1.1-0.20230202152459-5c7d0dd6ab86
 	github.com/kardianos/service v1.2.2
 	github.com/mdlayher/ethernet v0.0.0-20220221185849-529eae5b6118
-	github.com/mdlayher/netlink v1.7.2
-	github.com/mdlayher/packet v1.1.2
+	github.com/mdlayher/netlink v1.7.1
+	github.com/mdlayher/packet v1.1.1
 	// TODO(a.garipov): This package is deprecated; find a new one or use our
 	// own code for that.  Perhaps, use gopacket.
 	github.com/mdlayher/raw v0.1.0
-	github.com/miekg/dns v1.1.54
-	github.com/quic-go/quic-go v0.35.1
+	github.com/miekg/dns v1.1.53
+	github.com/quic-go/quic-go v0.33.0
 	github.com/stretchr/testify v1.8.2
 	github.com/ti-mo/netfilter v0.5.0
 	go.etcd.io/bbolt v1.3.7
-	golang.org/x/crypto v0.9.0
-	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1
-	golang.org/x/net v0.10.0
-	golang.org/x/sys v0.8.0
+	golang.org/x/crypto v0.8.0
+	golang.org/x/exp v0.0.0-20230321023759-10a507213a29
+	golang.org/x/net v0.9.0
+	golang.org/x/sys v0.7.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 	gopkg.in/yaml.v3 v3.0.1
 	howett.net/plist v1.0.0
@@ -47,9 +48,9 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/golang/mock v1.6.0 // indirect
-	github.com/google/pprof v0.0.0-20230602150820-91b7bce49751 // indirect
-	github.com/mdlayher/socket v0.4.1 // indirect
-	github.com/onsi/ginkgo/v2 v2.10.0 // indirect
+	github.com/google/pprof v0.0.0-20230406165453-00490a63f317 // indirect
+	github.com/mdlayher/socket v0.4.0 // indirect
+	github.com/onsi/ginkgo/v2 v2.9.2 // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
 	github.com/pierrec/lz4/v4 v4.1.17 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
@@ -59,7 +60,7 @@ require (
 	github.com/quic-go/qtls-go1-20 v0.2.2 // indirect
 	github.com/u-root/uio v0.0.0-20230305220412-3e8cd9d6bf63 // indirect
 	golang.org/x/mod v0.10.0 // indirect
-	golang.org/x/sync v0.2.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
 	golang.org/x/text v0.9.0 // indirect
-	golang.org/x/tools v0.9.3 // indirect
+	golang.org/x/tools v0.8.0 // indirect
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/AdguardTeam/dnsproxy v0.50.1 h1:A0HmAxb2izkOcuD50pRmR7ZnBL3/qF2DR2SlI6fN+6E=
-github.com/AdguardTeam/dnsproxy v0.50.1/go.mod h1:CQhZTkqC8X0ID6glrtyaxgqRRdiYfn1gJulC1cZ5Dn8=
+github.com/AdguardTeam/dnsproxy v0.49.1 h1:JpStBK05uCgA3ldleaNLRmIwE9V7vRg7/kVJQSdnQYg=
+github.com/AdguardTeam/dnsproxy v0.49.1/go.mod h1:Y7g7jRTd/u7+KJ/QvnGI2PCE8vnisp6EsW47/Sz0DZw=
 github.com/AdguardTeam/golibs v0.4.0/go.mod h1:skKsDKIBB7kkFflLJBpfGX+G8QFTx0WKUzB6TIgtUj4=
 github.com/AdguardTeam/golibs v0.10.4/go.mod h1:rSfQRGHIdgfxriDDNgNJ7HmE5zRoURq8R+VdR81Zuzw=
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@@ -106,10 +127,12 @@ github.com/quic-go/qtls-go1-19 v0.3.2 h1:tFxjCFcTQzK+oMxG6Zcvp4Dq8dx4yD3dDiIiyc8
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@@ -129,6 +152,7 @@ github.com/tklauser/go-sysconf v0.3.9 h1:JeUVdAOWhhxVcU6Eqr/ATFHgXk/mmiItdKeJPev
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@@ -136,10 +160,11 @@ go.etcd.io/bbolt v1.3.7 h1:j+zJOnnEjF/kyHlDDgGnVL/AIqIJPq8UoB2GSNfkUfQ=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
-golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 h1:k/i9J1pBpvlfR+9QsetwPyERsqu1GIbi967PQMq3Ivc=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.8.0 h1:pd9TJtTueMTVQXzk8E2XESSMQDj/U7OUu0PqJqPXQjQ=
+golang.org/x/crypto v0.8.0/go.mod h1:mRqEX+O9/h5TFCrQhkgjo2yKi0yYA+9ecGkdQoHrywE=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29 h1:ooxPy7fPvB4kwsA2h+iBNHkAbp/4JxTSwCmvdjEYmug=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
@@ -147,25 +172,40 @@ golang.org/x/mod v0.10.0 h1:lFO9qtOdlre5W1jxS3r/4szv2/6iXxScdzjoBMXNhYk=
 golang.org/x/mod v0.10.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190419010253-1f3472d942ba/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20191007182048-72f939374954/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210929193557-e81a3d93ecf6/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM=
+golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
-golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190411185658-b44545bcd369/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190418153312-f0ce4c0180be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190606122018-79a91cf218c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201015000850-e3ed0017c211/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210315160823-c6e025ad8005/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -179,8 +219,8 @@ golang.org/x/sys v0.0.0-20220209214540-3681064d5158/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.4.1-0.20230131160137-e7d7f63158de/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
+golang.org/x/sys v0.7.0/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 v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@@ -190,11 +230,12 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.9.3 h1:Gn1I8+64MsuTb/HpH+LmQtNas23LhUVr3rYZ0eKuaMM=
-golang.org/x/tools v0.9.3/go.mod h1:owI94Op576fPu3cIGQeHs3joujW/2Oc6MtlxbF5dfNc=
+golang.org/x/tools v0.8.0 h1:vSDcovVPld282ceKgDimkRSC8kpaH1dgyc9UMzlt84Y=
+golang.org/x/tools v0.8.0/go.mod h1:JxBZ99ISMI5ViVkT1tr6tdNmXeTrcpVSD3vZ1RsRdN4=
 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=

internal/aghnet/dhcp_unix.go

@@ -304,7 +304,7 @@ func tryConn6(req *dhcpv6.Message, c net.PacketConn) (ok, next bool, err error)
 	if !(response.Type() == dhcpv6.MessageTypeAdvertise &&
 		msg.TransactionID == req.TransactionID &&
 		rcid != nil &&
-		cid.Equal(rcid)) {
+		cid.Equal(*rcid)) {
 
 		log.Debug("dhcpv6: received message from server doesn't match our request")
 

internal/aghtest/interface.go

@@ -1,10 +1,12 @@
 package aghtest
 
 import (
+	"context"
 	"io/fs"
 	"net"
 
 	"github.com/AdguardTeam/AdGuardHome/internal/aghos"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
 	"github.com/AdguardTeam/dnsproxy/upstream"
 	"github.com/miekg/dns"
 )
@@ -116,6 +118,36 @@ func (w *FSWatcher) Close() (err error) {
 	return w.OnClose()
 }
 
+// Package agh
+
+// type check
+var _ agh.ServiceWithConfig[struct{}] = (*ServiceWithConfig[struct{}])(nil)
+
+// ServiceWithConfig is a mock [agh.ServiceWithConfig] implementation for tests.
+type ServiceWithConfig[ConfigType any] struct {
+	OnStart    func() (err error)
+	OnShutdown func(ctx context.Context) (err error)
+	OnConfig   func() (c ConfigType)
+}
+
+// Start implements the [agh.ServiceWithConfig] interface for
+// *ServiceWithConfig.
+func (s *ServiceWithConfig[_]) Start() (err error) {
+	return s.OnStart()
+}
+
+// Shutdown implements the [agh.ServiceWithConfig] interface for
+// *ServiceWithConfig.
+func (s *ServiceWithConfig[_]) Shutdown(ctx context.Context) (err error) {
+	return s.OnShutdown(ctx)
+}
+
+// Config implements the [agh.ServiceWithConfig] interface for
+// *ServiceWithConfig.
+func (s *ServiceWithConfig[ConfigType]) Config() (c ConfigType) {
+	return s.OnConfig()
+}
+
 // Module dnsproxy
 
 // Package upstream

internal/dhcpd/README.md

@@ -1,60 +1,46 @@
- #  Testing DHCP Server
+# DHCP server
 
 Contents:
- *  [Test setup with Virtual Box](#vbox)
- *  [Quick test with DHCPTest](#dhcptest)
+* [Test setup with Virtual Box](#vbox)
 
-##  <a href="#vbox" id="vbox" name="vbox">Test setup with Virtual Box</a>
+<a id="vbox"></a>
+## Test setup with Virtual Box
 
-   ### Prerequisites
+To set up a test environment for DHCP server you need:
 
-To set up a test environment for DHCP server you will need:
+* Linux host machine
+* Virtual Box
+* Virtual machine (guest OS doesn't matter)
 
- *  Linux AG Home host machine (Virtual).
- *  Virtual Box.
- *  Virtual machine (guest OS doesn't matter).
+### Configure client
 
-   ### Configure Virtual Box
+1. Install Virtual Box and run the following command to create a Host-Only network:
 
- 1.  Install Virtual Box and run the following command to create a Host-Only 
-     network:
+        $ VBoxManage hostonlyif create
 
-     ```sh
-     $ VBoxManage hostonlyif create
-     ```
-     
-     You can check its status by `ip a` command.  
+    You can check its status by `ip a` command.
 
-     You can also set up Host-Only network using Virtual Box menu: 
-     
-     ```
-     File -> Host Network Manager...
-     ```
+    You can also set up Host-Only network using Virtual Box menu:
 
- 2.  Create your virtual machine and set up its network:
+        File -> Host Network Manager...
 
-     ```
-     VM Settings -> Network -> Host-only Adapter
-     ```
+2. Create your virtual machine and set up its network:
 
- 3.  Start your VM, install an OS.  Configure your network interface to use
-     DHCP and the OS should ask for a IP address from our DHCP server.
+        VM Settings -> Network -> Host-only Adapter
 
- 4.  To see the current IP addresses on client OS you can use `ip a` command on
-     Linux or `ipconfig` on Windows.
+3. Start your VM, install an OS.  Configure your network interface to use DHCP and the OS should ask for a IP address from our DHCP server.
 
- 5.  To force the client OS to request an IP from DHCP server again, you can
-     use `dhclient` on Linux or `ipconfig /release` on Windows.
+4. To see the current IP address on client OS you can use `ip a` command on Linux or `ipconfig` on Windows.
 
-   ### Configure server
+5. To force the client OS to request an IP from DHCP server again, you can use `dhclient` on Linux or `ipconfig /release` on Windows.
 
- 1.  Edit server configuration file `AdGuardHome.yaml`, for example:
+### Configure server
 
-     ```yaml
-     dhcp:
+1. Edit server configuration file 'AdGuardHome.yaml', for example:
+
+        dhcp:
           enabled: true
           interface_name: vboxnet0
-          local_domain_name: lan
           dhcpv4:
             gateway_ip: 192.168.56.1
             subnet_mask: 255.255.255.0
@@ -68,29 +54,11 @@ To set up a test environment for DHCP server you will need:
             lease_duration: 86400
             ra_slaac_only: false
             ra_allow_slaac: false
-     ```
 
- 2.  Start the server
+2. Start the server
 
-     ```sh
-     ./AdGuardHome -v
-     ```
+        ./AdGuardHome
 
-     There should be a message in log which shows that DHCP server is ready:
+    There should be a message in log which shows that DHCP server is ready:
 
-     ```
-     [info] DHCP: listening on 0.0.0.0:67
-     ```
-
-##  <a href="#dhcptest" id="dhcptest" name="dhcptest">Quick test with DHCPTest utility</a>
-
-   ### Prerequisites
-
- *  [DHCP test utility][dhcptest-gh].
-
-   ### Quick test
-
-The DHCP server could be tested for DISCOVER-OFFER packets with in
-interactive mode.
-
-[dhcptest-gh]: https://github.com/CyberShadow/dhcptest
+        [info] DHCP: listening on 0.0.0.0:67

internal/dhcpd/conn_darwin.go

@@ -1,4 +1,4 @@
-//go:build darwin || freebsd || openbsd
+//go:build darwin
 
 package dhcpd
 

internal/dhcpd/conn_darwin_internal_test.go

@@ -1,4 +1,4 @@
-//go:build darwin || freebsd || openbsd
+//go:build darwin
 
 package dhcpd
 

internal/dhcpd/conn_unix.go

@@ -1,4 +1,4 @@
-//go:build linux
+//go:build freebsd || linux || openbsd
 
 package dhcpd
 

internal/dhcpd/conn_unix_internal_test.go

@@ -1,4 +1,4 @@
-//go:build linux
+//go:build freebsd || linux || openbsd
 
 package dhcpd
 

internal/dhcpd/dhcpd.go

@@ -239,16 +239,36 @@ func Create(conf *ServerConfig) (s *server, err error) {
 	// [aghhttp.RegisterFunc].
 	s.registerHandlers()
 
-	v4Enabled, v6Enabled, err := s.setServers(conf)
+	v4conf := conf.Conf4
+	v4conf.InterfaceName = s.conf.InterfaceName
+	v4conf.notify = s.onNotify
+	v4conf.Enabled = s.conf.Enabled && v4conf.RangeStart.IsValid()
+
+	s.srv4, err = v4Create(&v4conf)
 	if err != nil {
-		// Don't wrap the error, because it's informative enough as is.
-		return nil, err
+		if v4conf.Enabled {
+			return nil, fmt.Errorf("creating dhcpv4 srv: %w", err)
+		}
+
+		log.Debug("dhcpd: warning: creating dhcpv4 srv: %s", err)
+	}
+
+	v6conf := conf.Conf6
+	v6conf.Enabled = s.conf.Enabled
+	if len(v6conf.RangeStart) == 0 {
+		v6conf.Enabled = false
+	}
+	v6conf.InterfaceName = s.conf.InterfaceName
+	v6conf.notify = s.onNotify
+	s.srv6, err = v6Create(v6conf)
+	if err != nil {
+		return nil, fmt.Errorf("creating dhcpv6 srv: %w", err)
 	}
 
 	s.conf.Conf4 = conf.Conf4
 	s.conf.Conf6 = conf.Conf6
 
-	if s.conf.Enabled && !v4Enabled && !v6Enabled {
+	if s.conf.Enabled && !v4conf.Enabled && !v6conf.Enabled {
 		return nil, fmt.Errorf("neither dhcpv4 nor dhcpv6 srv is configured")
 	}
 
@@ -269,39 +289,6 @@ func Create(conf *ServerConfig) (s *server, err error) {
 	return s, nil
 }
 
-// setServers updates DHCPv4 and DHCPv6 servers created from the provided
-// configuration conf.
-func (s *server) setServers(conf *ServerConfig) (v4Enabled, v6Enabled bool, err error) {
-	v4conf := conf.Conf4
-	v4conf.InterfaceName = s.conf.InterfaceName
-	v4conf.notify = s.onNotify
-	v4conf.Enabled = s.conf.Enabled && v4conf.RangeStart.IsValid()
-
-	s.srv4, err = v4Create(&v4conf)
-	if err != nil {
-		if v4conf.Enabled {
-			return true, false, fmt.Errorf("creating dhcpv4 srv: %w", err)
-		}
-
-		log.Debug("dhcpd: warning: creating dhcpv4 srv: %s", err)
-	}
-
-	v6conf := conf.Conf6
-	v6conf.InterfaceName = s.conf.InterfaceName
-	v6conf.notify = s.onNotify
-	v6conf.Enabled = s.conf.Enabled
-	if len(v6conf.RangeStart) == 0 {
-		v6conf.Enabled = false
-	}
-
-	s.srv6, err = v6Create(v6conf)
-	if err != nil {
-		return v4conf.Enabled, v6conf.Enabled, fmt.Errorf("creating dhcpv6 srv: %w", err)
-	}
-
-	return v4conf.Enabled, v6conf.Enabled, nil
-}
-
 // Enabled returns true when the server is enabled.
 func (s *server) Enabled() (ok bool) {
 	return s.conf.Enabled

internal/dhcpd/http_unix.go

@@ -16,7 +16,6 @@ import (
 	"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
-	"github.com/AdguardTeam/golibs/netutil"
 )
 
 type v4ServerConfJSON struct {
@@ -264,28 +263,6 @@ func (s *server) handleDHCPSetConfigV6(
 	return srv6, enabled, err
 }
 
-// createServers returns DHCPv4 and DHCPv6 servers created from the provided
-// configuration conf.
-func (s *server) createServers(conf *dhcpServerConfigJSON) (srv4, srv6 DHCPServer, err error) {
-	srv4, v4Enabled, err := s.handleDHCPSetConfigV4(conf)
-	if err != nil {
-		return nil, nil, fmt.Errorf("bad dhcpv4 configuration: %s", err)
-	}
-
-	srv6, v6Enabled, err := s.handleDHCPSetConfigV6(conf)
-	if err != nil {
-		return nil, nil, fmt.Errorf("bad dhcpv6 configuration: %s", err)
-	}
-
-	if conf.Enabled == aghalg.NBTrue && !v4Enabled && !v6Enabled {
-		return nil, nil, fmt.Errorf("dhcpv4 or dhcpv6 configuration must be complete")
-	}
-
-	return srv4, srv6, nil
-}
-
-// handleDHCPSetConfig is the handler for the POST /control/dhcp/set_config
-// HTTP API.
 func (s *server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 	conf := &dhcpServerConfigJSON{}
 	conf.Enabled = aghalg.BoolToNullBool(s.conf.Enabled)
@@ -298,9 +275,22 @@ func (s *server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	srv4, srv6, err := s.createServers(conf)
+	srv4, v4Enabled, err := s.handleDHCPSetConfigV4(conf)
 	if err != nil {
-		aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
+		aghhttp.Error(r, w, http.StatusBadRequest, "bad dhcpv4 configuration: %s", err)
+
+		return
+	}
+
+	srv6, v6Enabled, err := s.handleDHCPSetConfigV6(conf)
+	if err != nil {
+		aghhttp.Error(r, w, http.StatusBadRequest, "bad dhcpv6 configuration: %s", err)
+
+		return
+	}
+
+	if conf.Enabled == aghalg.NBTrue && !v4Enabled && !v6Enabled {
+		aghhttp.Error(r, w, http.StatusBadRequest, "dhcpv4 or dhcpv6 configuration must be complete")
 
 		return
 	}
@@ -360,10 +350,10 @@ type netInterfaceJSON struct {
 	Addrs6       []netip.Addr `json:"ipv6_addresses"`
 }
 
-// handleDHCPInterfaces is the handler for the GET /control/dhcp/interfaces
-// HTTP API.
+// handleDHCPInterfaces is the handler for the GET /control/dhcp/interfaces HTTP
+// API.
 func (s *server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
-	resp := map[string]*netInterfaceJSON{}
+	resp := map[string]netInterfaceJSON{}
 
 	ifaces, err := net.Interfaces()
 	if err != nil {
@@ -374,23 +364,68 @@ func (s *server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
 
 	for _, iface := range ifaces {
 		if iface.Flags&net.FlagLoopback != 0 {
-			// It's a loopback, skip it.
+			// it's a loopback, skip it
 			continue
 		}
-
 		if iface.Flags&net.FlagBroadcast == 0 {
-			// This interface doesn't support broadcast, skip it.
+			// this interface doesn't support broadcast, skip it
 			continue
 		}
 
-		jsonIface, iErr := newNetInterfaceJSON(iface)
-		if iErr != nil {
-			aghhttp.Error(r, w, http.StatusInternalServerError, "%s", iErr)
+		var addrs []net.Addr
+		addrs, err = iface.Addrs()
+		if err != nil {
+			aghhttp.Error(
+				r,
+				w,
+				http.StatusInternalServerError,
+				"Failed to get addresses for interface %s: %s",
+				iface.Name,
+				err,
+			)
 
 			return
 		}
 
-		if jsonIface != nil {
+		jsonIface := netInterfaceJSON{
+			Name:         iface.Name,
+			HardwareAddr: iface.HardwareAddr.String(),
+		}
+
+		if iface.Flags != 0 {
+			jsonIface.Flags = iface.Flags.String()
+		}
+		// we don't want link-local addresses in json, so skip them
+		for _, addr := range addrs {
+			ipnet, ok := addr.(*net.IPNet)
+			if !ok {
+				// not an IPNet, should not happen
+				aghhttp.Error(
+					r,
+					w,
+					http.StatusInternalServerError,
+					"got iface.Addrs() element %[1]s that is not net.IPNet, it is %[1]T",
+					addr)
+
+				return
+			}
+			// ignore link-local
+			//
+			// TODO(e.burkov):  Try to listen DHCP on LLA as well.
+			if ipnet.IP.IsLinkLocalUnicast() {
+				continue
+			}
+
+			if ip4 := ipnet.IP.To4(); ip4 != nil {
+				addr := netip.AddrFrom4(*(*[4]byte)(ip4))
+				jsonIface.Addrs4 = append(jsonIface.Addrs4, addr)
+			} else {
+				addr := netip.AddrFrom16(*(*[16]byte)(ipnet.IP))
+				jsonIface.Addrs6 = append(jsonIface.Addrs6, addr)
+			}
+		}
+		if len(jsonIface.Addrs4)+len(jsonIface.Addrs6) != 0 {
+			jsonIface.GatewayIP = aghnet.GatewayIP(iface.Name)
 			resp[iface.Name] = jsonIface
 		}
 	}
@@ -398,64 +433,6 @@ func (s *server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
 	_ = aghhttp.WriteJSONResponse(w, r, resp)
 }
 
-// newNetInterfaceJSON creates a JSON object from a [net.Interface] iface.
-func newNetInterfaceJSON(iface net.Interface) (out *netInterfaceJSON, err error) {
-	addrs, err := iface.Addrs()
-	if err != nil {
-		return nil, fmt.Errorf(
-			"failed to get addresses for interface %s: %s",
-			iface.Name,
-			err,
-		)
-	}
-
-	out = &netInterfaceJSON{
-		Name:         iface.Name,
-		HardwareAddr: iface.HardwareAddr.String(),
-	}
-
-	if iface.Flags != 0 {
-		out.Flags = iface.Flags.String()
-	}
-
-	// We don't want link-local addresses in JSON, so skip them.
-	for _, addr := range addrs {
-		ipNet, ok := addr.(*net.IPNet)
-		if !ok {
-			// Not an IPNet, should not happen.
-			return nil, fmt.Errorf("got iface.Addrs() element %[1]s that is not"+
-				" net.IPNet, it is %[1]T", addr)
-		}
-
-		// Ignore link-local.
-		//
-		// TODO(e.burkov):  Try to listen DHCP on LLA as well.
-		if ipNet.IP.IsLinkLocalUnicast() {
-			continue
-		}
-
-		vAddr, iErr := netutil.IPToAddrNoMapped(ipNet.IP)
-		if iErr != nil {
-			// Not an IPNet, should not happen.
-			return nil, fmt.Errorf("failed to convert IP address %[1]s: %w", addr, iErr)
-		}
-
-		if vAddr.Is4() {
-			out.Addrs4 = append(out.Addrs4, vAddr)
-		} else {
-			out.Addrs6 = append(out.Addrs6, vAddr)
-		}
-	}
-
-	if len(out.Addrs4)+len(out.Addrs6) == 0 {
-		return nil, nil
-	}
-
-	out.GatewayIP = aghnet.GatewayIP(iface.Name)
-
-	return out, nil
-}
-
 // dhcpSearchOtherResult contains information about other DHCP server for
 // specific network interface.
 type dhcpSearchOtherResult struct {

internal/dhcpd/routeradv.go

@@ -7,7 +7,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/AdguardTeam/golibs/netutil"
 	"golang.org/x/net/icmp"
@@ -196,7 +195,7 @@ func createICMPv6RAPacket(params icmpv6RA) (data []byte, err error) {
 	return data, nil
 }
 
-// Init initializes RA module.
+// Init - initialize RA module
 func (ra *raCtx) Init() (err error) {
 	ra.stop.Store(0)
 	ra.conn = nil
@@ -204,7 +203,8 @@ func (ra *raCtx) Init() (err error) {
 		return nil
 	}
 
-	log.Debug("dhcpv6 ra: source IP address: %s  DNS IP address: %s", ra.ipAddr, ra.dnsIPAddr)
+	log.Debug("dhcpv6 ra: source IP address: %s  DNS IP address: %s",
+		ra.ipAddr, ra.dnsIPAddr)
 
 	params := icmpv6RA{
 		managedAddressConfiguration: !ra.raSLAACOnly,
@@ -223,15 +223,18 @@ func (ra *raCtx) Init() (err error) {
 		return fmt.Errorf("creating packet: %w", err)
 	}
 
+	success := false
 	ipAndScope := ra.ipAddr.String() + "%" + ra.ifaceName
 	ra.conn, err = icmp.ListenPacket("ip6:ipv6-icmp", ipAndScope)
 	if err != nil {
 		return fmt.Errorf("dhcpv6 ra: icmp.ListenPacket: %w", err)
 	}
-
 	defer func() {
-		if err != nil {
-			err = errors.WithDeferred(err, ra.Close())
+		if !success {
+			derr := ra.Close()
+			if derr != nil {
+				log.Error("closing context: %s", derr)
+			}
 		}
 	}()
 
@@ -266,6 +269,7 @@ func (ra *raCtx) Init() (err error) {
 		log.Debug("dhcpv6 ra: loop exit")
 	}()
 
+	success = true
 	return nil
 }
 

internal/dhcpd/v4_unix.go

@@ -342,8 +342,8 @@ func (s *v4Server) rmLease(lease *Lease) (err error) {
 // server to be configured and it's not.
 const ErrUnconfigured errors.Error = "server is unconfigured"
 
-// AddStaticLease implements the DHCPServer interface for *v4Server.  It is
-// safe for concurrent use.
+// AddStaticLease implements the DHCPServer interface for *v4Server.  It is safe
+// for concurrent use.
 func (s *v4Server) AddStaticLease(l *Lease) (err error) {
 	defer func() { err = errors.Annotate(err, "dhcpv4: adding static lease: %w") }()
 
@@ -354,23 +354,21 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
 	l.IP = l.IP.Unmap()
 
 	if !l.IP.Is4() {
-		return fmt.Errorf("invalid IP %q: only IPv4 is supported", l.IP)
+		return fmt.Errorf("invalid ip %q, only ipv4 is supported", l.IP)
 	} else if gwIP := s.conf.GatewayIP; gwIP == l.IP {
-		return fmt.Errorf("can't assign the gateway IP %q to the lease", gwIP)
+		return fmt.Errorf("can't assign the gateway IP %s to the lease", gwIP)
 	}
 
 	l.IsStatic = true
 
 	err = netutil.ValidateMAC(l.HWAddr)
 	if err != nil {
-		// Don't wrap the error, because it's informative enough as is.
 		return err
 	}
 
 	if hostname := l.Hostname; hostname != "" {
 		hostname, err = normalizeHostname(hostname)
 		if err != nil {
-			// Don't wrap the error, because it's informative enough as is.
 			return err
 		}
 
@@ -388,9 +386,32 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
 		l.Hostname = hostname
 	}
 
-	err = s.updateStaticLease(l)
+	// Perform the following actions in an anonymous function to make sure
+	// that the lock gets unlocked before the notification step.
+	func() {
+		s.leasesLock.Lock()
+		defer s.leasesLock.Unlock()
+
+		err = s.rmDynamicLease(l)
+		if err != nil {
+			err = fmt.Errorf(
+				"removing dynamic leases for %s (%s): %w",
+				l.IP,
+				l.HWAddr,
+				err,
+			)
+
+			return
+		}
+
+		err = s.addLease(l)
+		if err != nil {
+			err = fmt.Errorf("adding static lease for %s (%s): %w", l.IP, l.HWAddr, err)
+
+			return
+		}
+	}()
 	if err != nil {
-		// Don't wrap the error, because it's informative enough as is.
 		return err
 	}
 
@@ -400,25 +421,6 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
 	return nil
 }
 
-// updateStaticLease safe removes dynamic lease with the same properties and
-// then adds a static lease l.
-func (s *v4Server) updateStaticLease(l *Lease) (err error) {
-	s.leasesLock.Lock()
-	defer s.leasesLock.Unlock()
-
-	err = s.rmDynamicLease(l)
-	if err != nil {
-		return fmt.Errorf("removing dynamic leases for %s (%s): %w", l.IP, l.HWAddr, err)
-	}
-
-	err = s.addLease(l)
-	if err != nil {
-		return fmt.Errorf("adding static lease for %s (%s): %w", l.IP, l.HWAddr, err)
-	}
-
-	return nil
-}
-
 // RemoveStaticLease removes a static lease.  It is safe for concurrent use.
 func (s *v4Server) RemoveStaticLease(l *Lease) (err error) {
 	defer func() { err = errors.Annotate(err, "dhcpv4: %w") }()
@@ -892,9 +894,24 @@ func (s *v4Server) handleDecline(req, resp *dhcpv4.DHCPv4) (err error) {
 		reqIP = req.ClientIPAddr
 	}
 
-	oldLease := s.findLeaseForIP(reqIP, mac)
+	netIP, ok := netip.AddrFromSlice(reqIP)
+	if !ok {
+		log.Info("dhcpv4: invalid IP: %s", reqIP)
+
+		return nil
+	}
+
+	var oldLease *Lease
+	for _, l := range s.leases {
+		if bytes.Equal(l.HWAddr, mac) && l.IP == netIP {
+			oldLease = l
+
+			break
+		}
+	}
+
 	if oldLease == nil {
-		log.Info("dhcpv4: lease with IP %s for %s not found", reqIP, mac)
+		log.Info("dhcpv4: lease with ip %s for %s not found", reqIP, mac)
 
 		return nil
 	}
@@ -908,7 +925,7 @@ func (s *v4Server) handleDecline(req, resp *dhcpv4.DHCPv4) (err error) {
 	if err != nil {
 		return fmt.Errorf("allocating new lease for %s: %w", mac, err)
 	} else if newLease == nil {
-		log.Info("dhcpv4: allocating new lease for %s: no more IP addresses", mac)
+		log.Info("dhcpv4: allocating new lease for %s: no more ip addresses", mac)
 
 		resp.YourIPAddr = make([]byte, 4)
 		resp.UpdateOption(dhcpv4.OptMessageType(dhcpv4.MessageTypeAck))
@@ -924,32 +941,15 @@ func (s *v4Server) handleDecline(req, resp *dhcpv4.DHCPv4) (err error) {
 		return fmt.Errorf("adding new lease for %s: %w", mac, err)
 	}
 
-	log.Info("dhcpv4: changed IP from %s to %s for %s", reqIP, newLease.IP, mac)
+	log.Info("dhcpv4: changed ip from %s to %s for %s", reqIP, newLease.IP, mac)
+
+	resp.YourIPAddr = net.IP(newLease.IP.AsSlice())
 
-	resp.YourIPAddr = newLease.IP.AsSlice()
 	resp.UpdateOption(dhcpv4.OptMessageType(dhcpv4.MessageTypeAck))
 
 	return nil
 }
 
-// findLeaseForIP returns a lease for provided ip and mac.
-func (s *v4Server) findLeaseForIP(ip net.IP, mac net.HardwareAddr) (l *Lease) {
-	netIP, ok := netip.AddrFromSlice(ip)
-	if !ok {
-		log.Info("dhcpv4: invalid IP: %s", ip)
-
-		return nil
-	}
-
-	for _, il := range s.leases {
-		if bytes.Equal(il.HWAddr, mac) && il.IP == netIP {
-			return il
-		}
-	}
-
-	return nil
-}
-
 // handleRelease is the handler for the DHCP Release request.
 func (s *v4Server) handleRelease(req, resp *dhcpv4.DHCPv4) (err error) {
 	mac := req.ClientHWAddr
@@ -995,80 +995,11 @@ func (s *v4Server) handleRelease(req, resp *dhcpv4.DHCPv4) (err error) {
 	return nil
 }
 
-// messageHandler describes a DHCPv4 message handler function.
-type messageHandler func(s *v4Server, req, resp *dhcpv4.DHCPv4) (rCode int, l *Lease, err error)
-
-// messageHandlers is a map of handlers for various messages with message types
-// keys.
-var messageHandlers = map[dhcpv4.MessageType]messageHandler{
-	dhcpv4.MessageTypeDiscover: func(
-		s *v4Server,
-		req *dhcpv4.DHCPv4,
-		resp *dhcpv4.DHCPv4,
-	) (rCode int, l *Lease, err error) {
-		l, err = s.handleDiscover(req, resp)
-		if err != nil {
-			return 0, nil, fmt.Errorf("handling discover: %s", err)
-		}
-
-		if l == nil {
-			return 0, nil, nil
-		}
-
-		return 1, l, nil
-	},
-	dhcpv4.MessageTypeRequest: func(
-		s *v4Server,
-		req *dhcpv4.DHCPv4,
-		resp *dhcpv4.DHCPv4,
-	) (rCode int, l *Lease, err error) {
-		var toReply bool
-		l, toReply = s.handleRequest(req, resp)
-		if l == nil {
-			if toReply {
-				return 0, nil, nil
-			}
-
-			// Drop the packet.
-			return -1, nil, nil
-		}
-
-		return 1, l, nil
-	},
-	dhcpv4.MessageTypeDecline: func(
-		s *v4Server,
-		req *dhcpv4.DHCPv4,
-		resp *dhcpv4.DHCPv4,
-	) (rCode int, l *Lease, err error) {
-		err = s.handleDecline(req, resp)
-		if err != nil {
-			return 0, nil, fmt.Errorf("handling decline: %s", err)
-		}
-
-		return 1, nil, nil
-	},
-	dhcpv4.MessageTypeRelease: func(
-		s *v4Server,
-		req *dhcpv4.DHCPv4,
-		resp *dhcpv4.DHCPv4,
-	) (rCode int, l *Lease, err error) {
-		err = s.handleRelease(req, resp)
-		if err != nil {
-			return 0, nil, fmt.Errorf("handling release: %s", err)
-		}
-
-		return 1, nil, nil
-	},
-}
-
-// handle processes request, it finds a lease associated with MAC address and
-// prepares response.
-//
-// Possible return values are:
-//   - "1": OK,
-//   - "0": error, reply with Nak,
-//   - "-1": error, don't reply.
-func (s *v4Server) handle(req, resp *dhcpv4.DHCPv4) (rCode int) {
+// Find a lease associated with MAC and prepare response
+// Return 1: OK
+// Return 0: error; reply with Nak
+// Return -1: error; don't reply
+func (s *v4Server) handle(req, resp *dhcpv4.DHCPv4) int {
 	var err error
 
 	// Include server's identifier option since any reply should contain it.
@@ -1076,26 +1007,47 @@ func (s *v4Server) handle(req, resp *dhcpv4.DHCPv4) (rCode int) {
 	// See https://datatracker.ietf.org/doc/html/rfc2131#page-29.
 	resp.UpdateOption(dhcpv4.OptServerIdentifier(s.conf.dnsIPAddrs[0].AsSlice()))
 
-	handler := messageHandlers[req.MessageType()]
-	if handler == nil {
-		s.updateOptions(req, resp)
+	// TODO(a.garipov): Refactor this into handlers.
+	var l *Lease
+	switch mt := req.MessageType(); mt {
+	case dhcpv4.MessageTypeDiscover:
+		l, err = s.handleDiscover(req, resp)
+		if err != nil {
+			log.Error("dhcpv4: handling discover: %s", err)
 
-		return 1
-	}
+			return 0
+		}
 
-	rCode, l, err := handler(s, req, resp)
-	if err != nil {
-		log.Error("dhcpv4: %s", err)
+		if l == nil {
+			return 0
+		}
+	case dhcpv4.MessageTypeRequest:
+		var toReply bool
+		l, toReply = s.handleRequest(req, resp)
+		if l == nil {
+			if toReply {
+				return 0
+			}
+			return -1 // drop packet
+		}
+	case dhcpv4.MessageTypeDecline:
+		err = s.handleDecline(req, resp)
+		if err != nil {
+			log.Error("dhcpv4: handling decline: %s", err)
 
-		return 0
-	}
+			return 0
+		}
+	case dhcpv4.MessageTypeRelease:
+		err = s.handleRelease(req, resp)
+		if err != nil {
+			log.Error("dhcpv4: handling release: %s", err)
 
-	if rCode != 1 {
-		return rCode
+			return 0
+		}
 	}
 
 	if l != nil {
-		resp.YourIPAddr = l.IP.AsSlice()
+		resp.YourIPAddr = net.IP(l.IP.AsSlice())
 	}
 
 	s.updateOptions(req, resp)
@@ -1210,8 +1162,23 @@ func (s *v4Server) Start() (err error) {
 		// No available IP addresses which may appear later.
 		return nil
 	}
+	// Update the value of Domain Name Server option separately from others if
+	// not assigned yet since its value is available only at server's start.
+	//
+	// TODO(e.burkov):  Initialize as implicit option with the rest of default
+	// options when it will be possible to do before the call to Start.
+	if !s.explicitOpts.Has(dhcpv4.OptionDomainNameServer) {
+		s.implicitOpts.Update(dhcpv4.OptDNS(dnsIPAddrs...))
+	}
 
-	s.configureDNSIPAddrs(dnsIPAddrs)
+	for _, ip := range dnsIPAddrs {
+		ip = ip.To4()
+		if ip == nil {
+			continue
+		}
+
+		s.conf.dnsIPAddrs = append(s.conf.dnsIPAddrs, netip.AddrFrom4(*(*[4]byte)(ip)))
+	}
 
 	var c net.PacketConn
 	if c, err = s.newDHCPConn(iface); err != nil {
@@ -1232,10 +1199,10 @@ func (s *v4Server) Start() (err error) {
 	log.Info("dhcpv4: listening")
 
 	go func() {
-		if sErr := s.srv.Serve(); errors.Is(sErr, net.ErrClosed) {
+		if serr := s.srv.Serve(); errors.Is(serr, net.ErrClosed) {
 			log.Info("dhcpv4: server is closed")
-		} else if sErr != nil {
-			log.Error("dhcpv4: srv.Serve: %s", sErr)
+		} else if serr != nil {
+			log.Error("dhcpv4: srv.Serve: %s", serr)
 		}
 	}()
 
@@ -1246,28 +1213,6 @@ func (s *v4Server) Start() (err error) {
 	return nil
 }
 
-// configureDNSIPAddrs updates v4Server configuration with provided slice of
-// dns IP addresses.
-func (s *v4Server) configureDNSIPAddrs(dnsIPAddrs []net.IP) {
-	// Update the value of Domain Name Server option separately from others if
-	// not assigned yet since its value is available only at server's start.
-	//
-	// TODO(e.burkov):  Initialize as implicit option with the rest of default
-	// options when it will be possible to do before the call to Start.
-	if !s.explicitOpts.Has(dhcpv4.OptionDomainNameServer) {
-		s.implicitOpts.Update(dhcpv4.OptDNS(dnsIPAddrs...))
-	}
-
-	for _, ip := range dnsIPAddrs {
-		vAddr, err := netutil.IPToAddr(ip, netutil.AddrFamilyIPv4)
-		if err != nil {
-			continue
-		}
-
-		s.conf.dnsIPAddrs = append(s.conf.dnsIPAddrs, vAddr)
-	}
-}
-
 // Stop - stop server
 func (s *v4Server) Stop() (err error) {
 	if s.srv == nil {

internal/dhcpd/v4_unix_test.go

@@ -227,7 +227,7 @@ func TestV4Server_AddRemove_static(t *testing.T) {
 		},
 		name: "with_gateway_ip",
 		wantErrMsg: "dhcpv4: adding static lease: " +
-			`can't assign the gateway IP "192.168.10.1" to the lease`,
+			"can't assign the gateway IP 192.168.10.1 to the lease",
 	}, {
 		lease: &Lease{
 			Hostname: "ip6.local",
@@ -236,7 +236,7 @@ func TestV4Server_AddRemove_static(t *testing.T) {
 		},
 		name: "ipv6",
 		wantErrMsg: `dhcpv4: adding static lease: ` +
-			`invalid IP "ffff::1": only IPv4 is supported`,
+			`invalid ip "ffff::1", only ipv4 is supported`,
 	}, {
 		lease: &Lease{
 			Hostname: "bad-mac.local",

internal/dhcpd/v6_unix.go

@@ -30,7 +30,7 @@ type v6Server struct {
 	leasesLock sync.Mutex
 	leases     []*Lease
 	ipAddrs    [256]byte
-	sid        dhcpv6.DUID
+	sid        dhcpv6.Duid
 
 	ra raCtx // RA module
 
@@ -586,31 +586,9 @@ func (s *v6Server) packetHandler(conn net.PacketConn, peer net.Addr, req dhcpv6.
 	}
 }
 
-// configureDNSIPAddrs updates v6Server configuration with the slice of DNS IP
-// addresses of provided interface iface.  Initializes RA module.
-func (s *v6Server) configureDNSIPAddrs(iface *net.Interface) (ok bool, err error) {
-	dnsIPAddrs, err := aghnet.IfaceDNSIPAddrs(
-		iface,
-		aghnet.IPVersion6,
-		defaultMaxAttempts,
-		defaultBackoff,
-	)
-	if err != nil {
-		return false, fmt.Errorf("interface %s: %w", iface.Name, err)
-	}
-
-	if len(dnsIPAddrs) == 0 {
-		return false, nil
-	}
-
-	s.conf.dnsIPAddrs = dnsIPAddrs
-
-	return true, s.initRA(iface)
-}
-
-// initRA initializes RA module.
-func (s *v6Server) initRA(iface *net.Interface) (err error) {
-	// Choose the source IP address - should be link-local-unicast.
+// initialize RA module
+func (s *v6Server) initRA(iface *net.Interface) error {
+	// choose the source IP address - should be link-local-unicast
 	s.ra.ipAddr = s.conf.dnsIPAddrs[0]
 	for _, ip := range s.conf.dnsIPAddrs {
 		if ip.IsLinkLocalUnicast() {
@@ -626,7 +604,6 @@ func (s *v6Server) initRA(iface *net.Interface) (err error) {
 	s.ra.ifaceName = s.conf.InterfaceName
 	s.ra.iface = iface
 	s.ra.packetSendPeriod = 1 * time.Second
-
 	return s.ra.Init()
 }
 
@@ -646,47 +623,63 @@ func (s *v6Server) Start() (err error) {
 
 	log.Debug("dhcpv6: starting...")
 
-	ok, err := s.configureDNSIPAddrs(iface)
+	dnsIPAddrs, err := aghnet.IfaceDNSIPAddrs(
+		iface,
+		aghnet.IPVersion6,
+		defaultMaxAttempts,
+		defaultBackoff,
+	)
 	if err != nil {
-		// Don't wrap the error, because it's informative enough as is.
-		return err
+		return fmt.Errorf("interface %s: %w", ifaceName, err)
 	}
 
-	if !ok {
+	if len(dnsIPAddrs) == 0 {
 		// No available IP addresses which may appear later.
 		return nil
 	}
 
-	// Don't initialize DHCPv6 server if we must force the clients to use SLAAC.
+	s.conf.dnsIPAddrs = dnsIPAddrs
+
+	err = s.initRA(iface)
+	if err != nil {
+		return err
+	}
+
+	// don't initialize DHCPv6 server if we must force the clients to use SLAAC
 	if s.conf.RASLAACOnly {
 		log.Debug("not starting dhcpv6 server due to ra_slaac_only=true")
 
 		return nil
 	}
 
+	log.Debug("dhcpv6: listening...")
+
 	err = netutil.ValidateMAC(iface.HardwareAddr)
 	if err != nil {
 		return fmt.Errorf("validating interface %s: %w", iface.Name, err)
 	}
 
-	s.sid = &dhcpv6.DUIDLLT{
-		HWType:        iana.HWTypeEthernet,
+	s.sid = dhcpv6.Duid{
+		Type:          dhcpv6.DUID_LLT,
+		HwType:        iana.HWTypeEthernet,
 		LinkLayerAddr: iface.HardwareAddr,
 		Time:          dhcpv6.GetTime(),
 	}
 
-	s.srv, err = server6.NewServer(iface.Name, nil, s.packetHandler, server6.WithDebugLogger())
+	laddr := &net.UDPAddr{
+		IP:   net.ParseIP("::"),
+		Port: dhcpv6.DefaultServerPort,
+	}
+	s.srv, err = server6.NewServer(iface.Name, laddr, s.packetHandler, server6.WithDebugLogger())
 	if err != nil {
 		return err
 	}
 
-	log.Debug("dhcpv6: listening...")
-
 	go func() {
-		if sErr := s.srv.Serve(); errors.Is(sErr, net.ErrClosed) {
+		if serr := s.srv.Serve(); errors.Is(serr, net.ErrClosed) {
 			log.Info("dhcpv6: server is closed")
-		} else if sErr != nil {
-			log.Error("dhcpv6: srv.Serve: %s", sErr)
+		} else if serr != nil {
+			log.Error("dhcpv6: srv.Serve: %s", serr)
 		}
 	}()
 

internal/dhcpd/v6_unix_test.go

@@ -121,8 +121,9 @@ func TestV6GetLease(t *testing.T) {
 
 	dnsAddr := net.ParseIP("2000::1")
 	s.conf.dnsIPAddrs = []net.IP{dnsAddr}
-	s.sid = &dhcpv6.DUIDLL{
-		HWType:        iana.HWTypeEthernet,
+	s.sid = dhcpv6.Duid{
+		Type:          dhcpv6.DUID_LLT,
+		HwType:        iana.HWTypeEthernet,
 		LinkLayerAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
 	}
 
@@ -215,8 +216,9 @@ func TestV6GetDynamicLease(t *testing.T) {
 
 	dnsAddr := net.ParseIP("2000::1")
 	s.conf.dnsIPAddrs = []net.IP{dnsAddr}
-	s.sid = &dhcpv6.DUIDLL{
-		HWType:        iana.HWTypeEthernet,
+	s.sid = dhcpv6.Duid{
+		Type:          dhcpv6.DUID_LLT,
+		HwType:        iana.HWTypeEthernet,
 		LinkLayerAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
 	}
 

internal/dnsforward/http_test.go

@@ -487,8 +487,7 @@ func TestServer_handleTestUpstreaDNS(t *testing.T) {
 		},
 		wantResp: map[string]any{
 			badUps: `upstream "` + badUps + `" fails to exchange: ` +
-				`couldn't communicate with upstream: exchanging with ` +
-				badUps + ` over tcp: dns: id mismatch`,
+				`couldn't communicate with upstream: dns: id mismatch`,
 		},
 		name: "broken",
 	}, {
@@ -498,8 +497,7 @@ func TestServer_handleTestUpstreaDNS(t *testing.T) {
 		wantResp: map[string]any{
 			goodUps: "OK",
 			badUps: `upstream "` + badUps + `" fails to exchange: ` +
-				`couldn't communicate with upstream: exchanging with ` +
-				badUps + ` over tcp: dns: id mismatch`,
+				`couldn't communicate with upstream: dns: id mismatch`,
 		},
 		name: "both",
 	}}

internal/filtering/dnsrewrite.go

@@ -3,6 +3,7 @@ package filtering
 import (
 	"github.com/AdguardTeam/urlfilter/rules"
 	"github.com/miekg/dns"
+	"golang.org/x/exp/slices"
 )
 
 // DNSRewriteResult is the result of application of $dnsrewrite rules.
@@ -24,7 +25,13 @@ func (d *DNSFilter) processDNSRewrites(dnsr []*rules.NetworkRule) (res Result) {
 		Response: DNSRewriteResultResponse{},
 	}
 
-	for _, nr := range dnsr {
+	slices.SortFunc(dnsr, rewriteSortsBefore)
+
+	for i, nr := range dnsr {
+		if i > 0 && containsWildcard(nr) {
+			break
+		}
+
 		dr := nr.DNSRewrite
 		if dr.NewCNAME != "" {
 			// NewCNAME rules have a higher priority than other rules.
@@ -73,3 +80,19 @@ func (d *DNSFilter) processDNSRewrites(dnsr []*rules.NetworkRule) (res Result) {
 		Reason:           RewrittenRule,
 	}
 }
+
+func rewriteSortsBefore(a, b *rules.NetworkRule) (sortsBefore bool) {
+	return len(a.Shortcut) > len(b.Shortcut)
+}
+
+func containsWildcard(r *rules.NetworkRule) (ok bool) {
+	for _, c := range r.RuleText {
+		if c == '*' {
+			return true
+		} else if c == '^' {
+			break
+		}
+	}
+
+	return false
+}

internal/filtering/dnsrewrite_test.go

@@ -5,6 +5,7 @@ import (
 	"path"
 	"testing"
 
+	"github.com/AdguardTeam/urlfilter"
 	"github.com/miekg/dns"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -202,3 +203,32 @@ func TestDNSFilter_CheckHostRules_dnsrewrite(t *testing.T) {
 		assert.Equal(t, "new-ptr-with-dot.", ptr)
 	})
 }
+
+func TestDNSFilter_ProcessDNSRewrites(t *testing.T) {
+	const text = `
+|www.example.com^$dnsrewrite=127.0.0.1
+|*.example.com^$dnsrewrite=127.0.0.2
+`
+
+	host := "www.example.com"
+	rrtype := dns.TypeA
+
+	f, _ := newForTest(t, nil, []Filter{{ID: 0, Data: []byte(text)}})
+	setts := &Settings{
+		FilteringEnabled: true,
+	}
+
+	ufReq := &urlfilter.DNSRequest{
+		Hostname:         host,
+		SortedClientTags: setts.ClientTags,
+		ClientIP:         setts.ClientIP.String(),
+		ClientName:       setts.ClientName,
+		DNSType:          rrtype,
+	}
+
+	dres, matched := f.filteringEngine.MatchRequest(ufReq)
+	require.False(t, matched)
+
+	res := f.processDNSResultRewrites(dres, host)
+	assert.Len(t, res.Rules, 1)
+}

internal/filtering/servicelist.go

@@ -12,14 +12,6 @@ type blockedService struct {
 
 // blockedServices contains raw blocked service data.
 var blockedServices = []blockedService{{
-	ID:      "500px",
-	Name:    "500px",
-	IconSVG: []byte("<svg xmlns=\"http://www.w3.org/2000/svg\" fill=\"currentColor\" viewBox=\"0 0 50 50\"><path d=\"M 5 14 L 2.5 26 L 6.800781 26 C 6.800781 26 7.699219 24.300781 10.199219 24.300781 C 12.699219 24.300781 14 26.199219 14 28.300781 C 14 30.402344 12.5 32.800781 10.199219 32.800781 C 7.898438 32.800781 6.5 30.398438 6.5 29 L 2 29 C 2 30.199219 3 36 10.199219 36 C 15.15625 36 17.417969 33.121094 18.015625 31.898438 C 19.386719 34.34375 21.992188 36 24.984375 36 C 27.253906 36 29.777344 34.808594 32.5 32.453125 C 35.222656 34.808594 37.746094 36 40.015625 36 C 44.417969 36 48 32.410156 48 28 C 48 23.589844 44.417969 20 40.015625 20 C 37.746094 20 35.222656 21.191406 32.5 23.546875 C 29.777344 21.191406 27.253906 20 24.984375 20 C 21.832031 20 19.105469 21.847656 17.8125 24.511719 C 17.113281 23.382813 15.414063 21 11.902344 21 C 8.101563 21 7.300781 22.597656 7.300781 22.597656 C 7.300781 22.597656 7.699219 21.300781 8.300781 18 L 17 18 L 17 14 Z M 24.984375 25 C 25.453125 25 26.800781 25.226563 29.230469 27.328125 L 30.011719 28 L 29.230469 28.671875 C 26.800781 30.773438 25.453125 31 24.984375 31 C 23.339844 31 22 29.652344 22 28 C 22 26.347656 23.339844 25 24.984375 25 Z M 40.015625 25 C 41.660156 25 43 26.347656 43 28 C 43 29.652344 41.660156 31 40.015625 31 C 39.546875 31 38.199219 30.773438 35.769531 28.671875 L 34.988281 28 L 35.769531 27.328125 C 38.199219 25.226563 39.546875 25 40.015625 25 Z\"/></svg>"),
-	Rules: []string{
-		"||500px.com^",
-		"||500px.org^",
-	},
-}, {
 	ID:      "9gag",
 	Name:    "9GAG",
 	IconSVG: []byte("<svg xmlns=\"http://www.w3.org/2000/svg\" fill=\"currentColor\" viewBox=\"0 0 50 50\"><path d=\"M 44 14 C 44 13.644531 43.8125 13.316406 43.507813 13.136719 C 40.453125 11.347656 28.46875 4.847656 25.535156 3.136719 C 25.222656 2.957031 24.839844 2.957031 24.527344 3.136719 C 21.128906 5.117188 10.089844 11.621094 7.496094 13.136719 C 7.1875 13.316406 7 13.644531 7 14 L 7 20 C 7 20.378906 7.214844 20.722656 7.550781 20.894531 C 7.660156 20.949219 18.597656 26.453125 24.5 29.867188 C 24.8125 30.046875 25.195313 30.046875 25.507813 29.863281 C 27.269531 28.828125 29.117188 27.859375 30.902344 26.921875 C 32.253906 26.214844 33.636719 25.488281 35.003906 24.722656 C 35.007813 26.820313 35.003906 29.296875 35 30.40625 L 25 35.859375 L 14.480469 30.121094 C 14.144531 29.9375 13.730469 29.964844 13.417969 30.1875 L 6.417969 35.1875 C 6.140625 35.386719 5.980469 35.714844 6.003906 36.054688 C 6.023438 36.398438 6.214844 36.707031 6.515625 36.871094 L 24.542969 46.871094 C 24.695313 46.957031 24.859375 47 25.027344 47 C 25.195313 47 25.363281 46.957031 25.515625 46.875 L 43.484375 36.875 C 43.804688 36.695313 44 36.363281 44 36 C 44 36 43.992188 21.011719 44 14 Z M 25 20 L 18 16 L 25 12 L 32 16 Z\" /></svg>"),
@@ -1188,18 +1180,6 @@ var blockedServices = []blockedService{{
 		"||zuckerberg.com^",
 		"||zuckerberg.net^",
 	},
-}, {
-	ID:      "flickr",
-	Name:    "Flickr",
-	IconSVG: []byte("<svg xmlns=\"http://www.w3.org/2000/svg\" fill=\"currentColor\" viewBox=\"0 0 50 50\"><path d=\"M 9 4 C 6.2504839 4 4 6.2504839 4 9 L 4 41 C 4 43.749516 6.2504839 46 9 46 L 41 46 C 43.749516 46 46 43.749516 46 41 L 46 9 C 46 6.2504839 43.749516 4 41 4 L 9 4 z M 9 6 L 41 6 C 42.668484 6 44 7.3315161 44 9 L 44 41 C 44 42.668484 42.668484 44 41 44 L 9 44 C 7.3315161 44 6 42.668484 6 41 L 6 9 C 6 7.3315161 7.3315161 6 9 6 z M 16 17 C 11.59 17 8 20.59 8 25 C 8 29.41 11.59 33 16 33 C 20.41 33 24 29.41 24 25 C 24 20.59 20.41 17 16 17 z M 34 17 C 29.59 17 26 20.59 26 25 C 26 29.41 29.59 33 34 33 C 38.41 33 42 29.41 42 25 C 42 20.59 38.41 17 34 17 z\"/></svg>"),
-	Rules: []string{
-		"||flic.kr^",
-		"||flickr.com^",
-		"||flickr.net^",
-		"||flickrprints.com^",
-		"||flickrpro.com^",
-		"||staticflickr.com^",
-	},
 }, {
 	ID:      "gog",
 	Name:    "GOG",
@@ -1345,13 +1325,6 @@ var blockedServices = []blockedService{{
 		"||kakao.com^",
 		"||kgslb.com^",
 	},
-}, {
-	ID:      "kik",
-	Name:    "Kik",
-	IconSVG: []byte("<svg xmlns=\"http://www.w3.org/2000/svg\" fill=\"currentColor\" viewBox=\"0 0 50 50\"><path d=\"M 3.5039062 12 C 1.9347705 11.994817 0.87857579 12.97636 0.4453125 13.849609 C 0.01204921 14.722858 0 15.564453 0 15.564453 A 1.0001 1.0001 0 0 0 0 15.59375 L 0 35 A 1.0001 1.0001 0 0 0 0.00390625 35.078125 C 0.00390625 35.078125 0.05696144 35.828363 0.5390625 36.554688 C 1.0211636 37.281011 2.0459252 38.004441 3.5019531 38.001953 C 4.8916439 38.000053 5.8837351 37.273604 6.3769531 36.578125 C 6.8701712 35.882646 6.9863281 35.166016 6.9863281 35.166016 A 1.0001 1.0001 0 0 0 7 35 L 7 31.802734 L 10.167969 36.554688 L 10.130859 36.494141 C 10.511831 37.164615 11.143097 37.525465 11.742188 37.730469 C 12.341278 37.935473 12.950104 38.001953 13.5 38.001953 C 15.411725 38.001953 17 36.431487 17 34.5 C 17 34.056649 16.90825 34.03442 16.851562 33.912109 C 16.794882 33.789799 16.730864 33.671331 16.654297 33.537109 C 16.501163 33.268666 16.298339 32.944015 16.058594 32.572266 C 15.579103 31.828767 14.950355 30.90254 14.322266 29.992188 C 13.310206 28.525308 12.655222 27.610988 12.300781 27.113281 L 14.707031 24.707031 A 1.0001 1.0001 0 0 0 14.738281 24.673828 C 14.738281 24.673828 15.354706 24.012223 15.748047 23.042969 C 16.141388 22.073714 16.298687 20.56089 15.259766 19.349609 C 14.281705 18.208994 12.842689 18.141009 11.925781 18.416016 C 11.008874 18.691022 10.371094 19.222656 10.371094 19.222656 A 1.0001 1.0001 0 0 0 10.292969 19.292969 L 6.9980469 22.587891 L 6.9921875 15.646484 A 1.0001 1.0001 0 0 0 6.9902344 15.580078 C 6.9902344 15.580078 6.9441634 14.743069 6.5058594 13.875 C 6.0675579 13.006938 5.0412971 12.005313 3.5039062 12 z M 30.503906 12 C 28.93477 11.9948 27.878577 12.97636 27.445312 13.849609 C 27.012049 14.722858 27 15.564453 27 15.564453 A 1.0001 1.0001 0 0 0 27 15.59375 L 27 35 A 1.0001 1.0001 0 0 0 27.003906 35.078125 C 27.003906 35.078125 27.056966 35.828363 27.539062 36.554688 C 28.021165 37.281011 29.045925 38.004441 30.501953 38.001953 C 31.891644 38.000053 32.883735 37.273604 33.376953 36.578125 C 33.870171 35.882646 33.986328 35.166016 33.986328 35.166016 A 1.0001 1.0001 0 0 0 34 35 L 34 31.802734 L 37.167969 36.554688 L 37.130859 36.494141 C 37.511831 37.164615 38.143096 37.525465 38.742188 37.730469 C 39.341277 37.935473 39.950104 38.001953 40.5 38.001953 C 42.411725 38.001953 44 36.431487 44 34.5 C 44 34.056649 43.908251 34.03442 43.851562 33.912109 C 43.794882 33.789799 43.730864 33.671331 43.654297 33.537109 C 43.501163 33.268666 43.298339 32.944015 43.058594 32.572266 C 42.579103 31.828767 41.950355 30.90254 41.322266 29.992188 C 40.310206 28.525308 39.655222 27.610988 39.300781 27.113281 L 41.707031 24.707031 A 1.0001 1.0001 0 0 0 41.738281 24.673828 C 41.738281 24.673828 42.354706 24.012223 42.748047 23.042969 C 43.141388 22.073714 43.298687 20.56089 42.259766 19.349609 C 41.281705 18.208994 39.842689 18.141009 38.925781 18.416016 C 38.008874 18.691022 37.371094 19.222656 37.371094 19.222656 A 1.0001 1.0001 0 0 0 37.292969 19.292969 L 33.998047 22.587891 L 33.992188 15.646484 A 1.0001 1.0001 0 0 0 33.990234 15.580078 C 33.990234 15.580078 33.944164 14.743069 33.505859 13.875 C 33.067647 13.006938 32.041297 12.005313 30.503906 12 z M 21.507812 18 C 19.85324 17.98686 18.785557 19.124468 18.382812 20.09375 C 18.181441 20.578391 18.090615 21.031738 18.044922 21.375 C 18.022072 21.546631 18.011459 21.69063 18.005859 21.796875 C 18.000252 21.90312 18 22.065333 18 21.984375 L 17.982422 34.998047 A 1.0001 1.0001 0 0 0 17.990234 35.134766 C 17.990234 35.134766 18.085674 35.862804 18.576172 36.568359 C 19.06667 37.273915 20.071581 37.997467 21.486328 38 C 22.885358 38.0026 23.885897 37.278643 24.380859 36.580078 C 24.875822 35.881513 24.986328 35.160156 24.986328 35.160156 A 1.0001 1.0001 0 0 0 25 35 L 25 21.996094 C 25 21.996094 25.02572 21.084043 24.625 20.117188 C 24.224283 19.150332 23.164841 18.013078 21.507812 18 z M 46.5 24 C 44.578848 24 43 25.578848 43 27.5 C 43 29.421152 44.578848 31 46.5 31 C 48.421152 31 50 29.421152 50 27.5 C 50 25.578848 48.421152 24 46.5 24 z M 46.5 26 C 47.340272 26 48 26.659728 48 27.5 C 48 28.340272 47.340272 29 46.5 29 C 45.659728 29 45 28.340272 45 27.5 C 45 26.659728 45.659728 26 46.5 26 z\"/></svg>"),
-	Rules: []string{
-		"||kik.com^",
-	},
 }, {
 	ID:      "lazada",
 	Name:    "Lazada",
@@ -1412,7 +1385,6 @@ var blockedServices = []blockedService{{
 	Rules: []string{
 		"||aus.social^",
 		"||awscommunity.social^",
-		"||climatejustice.social^",
 		"||cyberplace.social^",
 		"||defcon.social^",
 		"||det.social^",
@@ -1470,13 +1442,13 @@ var blockedServices = []blockedService{{
 		"||mstdn.plus^",
 		"||mstdn.social^",
 		"||muenchen.social^",
+		"||muenster.im^",
 		"||newsie.social^",
 		"||noc.social^",
 		"||norden.social^",
 		"||nrw.social^",
 		"||o3o.ca^",
 		"||ohai.social^",
-		"||pewtix.com^",
 		"||piaille.fr^",
 		"||pol.social^",
 		"||ravenation.club^",
@@ -1508,6 +1480,7 @@ var blockedServices = []blockedService{{
 		"||union.place^",
 		"||universeodon.com^",
 		"||urbanists.social^",
+		"||wien.rocks^",
 		"||wxw.moe^",
 	},
 }, {
@@ -1854,13 +1827,6 @@ var blockedServices = []blockedService{{
 		"||tx.me^",
 		"||usercontent.dev^",
 	},
-}, {
-	ID:      "tidal",
-	Name:    "Tidal",
-	IconSVG: []byte("<svg xmlns=\"http://www.w3.org/2000/svg\" fill=\"currentColor\" viewBox=\"0 0 50 50\"><path d=\"M 9 12 C 8.7615 12 8.5237969 12.091437 8.3417969 12.273438 L 1.2734375 19.341797 C 0.9094375 19.705797 0.9094375 20.294203 1.2734375 20.658203 L 8.3417969 27.726562 C 8.7057969 28.090563 9.2942031 28.090563 9.6582031 27.726562 L 16.726562 20.658203 C 16.908563 20.476203 17 20.2385 17 20 C 17 19.7615 16.908563 19.523797 16.726562 19.341797 L 9.6582031 12.273438 C 9.4762031 12.091437 9.2385 12 9 12 z M 17 20 C 17 20.2385 17.091438 20.476203 17.273438 20.658203 L 24.341797 27.726562 C 24.523797 27.908563 24.7615 28 25 28 C 25.2385 28 25.476203 27.908563 25.658203 27.726562 L 32.726562 20.658203 C 32.908563 20.476203 33 20.2385 33 20 C 33 19.7615 32.908563 19.523797 32.726562 19.341797 L 25.658203 12.273438 C 25.294203 11.909437 24.705797 11.909437 24.341797 12.273438 L 17.273438 19.341797 C 17.091437 19.523797 17 19.7615 17 20 z M 33 20 C 33 20.2385 33.091437 20.476203 33.273438 20.658203 L 40.341797 27.726562 C 40.705797 28.090563 41.294203 28.090563 41.658203 27.726562 L 48.726562 20.658203 C 49.090563 20.294203 49.090563 19.705797 48.726562 19.341797 L 41.658203 12.273438 C 41.294203 11.909437 40.705797 11.909437 40.341797 12.273438 L 33.273438 19.341797 C 33.091437 19.523797 33 19.7615 33 20 z M 25 28 C 24.7615 28 24.523797 28.091437 24.341797 28.273438 L 17.273438 35.341797 C 16.909437 35.705797 16.909437 36.294203 17.273438 36.658203 L 24.341797 43.726562 C 24.705797 44.090562 25.294203 44.090562 25.658203 43.726562 L 32.726562 36.658203 C 33.090563 36.294203 33.090563 35.705797 32.726562 35.341797 L 25.658203 28.273438 C 25.476203 28.091437 25.2385 28 25 28 z\"/></svg>"),
-	Rules: []string{
-		"||tidal.com^",
-	},
 }, {
 	ID:      "tiktok",
 	Name:    "TikTok",

internal/home/client.go

@@ -8,7 +8,6 @@ import (
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering/safesearch"
 	"github.com/AdguardTeam/dnsproxy/proxy"
-	"github.com/AdguardTeam/golibs/stringutil"
 )
 
 // Client contains information about persistent clients.
@@ -38,19 +37,6 @@ type Client struct {
 	IgnoreStatistics      bool
 }
 
-// ShallowClone returns a deep copy of the client, except upstreamConfig,
-// safeSearchConf, SafeSearch fields, because it's difficult to copy them.
-func (c *Client) ShallowClone() (sh *Client) {
-	clone := *c
-
-	clone.IDs = stringutil.CloneSlice(c.IDs)
-	clone.Tags = stringutil.CloneSlice(c.Tags)
-	clone.BlockedServices = stringutil.CloneSlice(c.BlockedServices)
-	clone.Upstreams = stringutil.CloneSlice(c.Upstreams)
-
-	return &clone
-}
-
 // closeUpstreams closes the client-specific upstream config of c if any.
 func (c *Client) closeUpstreams() (err error) {
 	if c.upstreamConfig != nil {

internal/home/clients.go

@@ -378,7 +378,6 @@ func (clients *clientsContainer) clientOrArtificial(
 	}, true
 }
 
-// Find returns a shallow copy of the client if there is one found.
 func (clients *clientsContainer) Find(id string) (c *Client, ok bool) {
 	clients.lock.Lock()
 	defer clients.lock.Unlock()
@@ -388,18 +387,20 @@ func (clients *clientsContainer) Find(id string) (c *Client, ok bool) {
 		return nil, false
 	}
 
-	return c.ShallowClone(), true
+	c.IDs = stringutil.CloneSlice(c.IDs)
+	c.Tags = stringutil.CloneSlice(c.Tags)
+	c.BlockedServices = stringutil.CloneSlice(c.BlockedServices)
+	c.Upstreams = stringutil.CloneSlice(c.Upstreams)
+
+	return c, true
 }
 
 // shouldCountClient is a wrapper around Find to make it a valid client
 // information finder for the statistics.  If no information about the client
 // is found, it returns true.
 func (clients *clientsContainer) shouldCountClient(ids []string) (y bool) {
-	clients.lock.Lock()
-	defer clients.lock.Unlock()
-
 	for _, id := range ids {
-		client, ok := clients.findLocked(id)
+		client, ok := clients.Find(id)
 		if ok {
 			return !client.IgnoreStatistics
 		}
@@ -616,15 +617,6 @@ func (clients *clientsContainer) Add(c *Client) (ok bool, err error) {
 		}
 	}
 
-	clients.add(c)
-
-	log.Debug("clients: added %q: ID:%q [%d]", c.Name, c.IDs, len(clients.list))
-
-	return true, nil
-}
-
-// add c to the indexes. clients.lock is expected to be locked.
-func (clients *clientsContainer) add(c *Client) {
 	// update Name index
 	clients.list[c.Name] = c
 
@@ -632,6 +624,10 @@ func (clients *clientsContainer) add(c *Client) {
 	for _, id := range c.IDs {
 		clients.idIndex[id] = c
 	}
+
+	log.Debug("clients: added %q: ID:%q [%d]", c.Name, c.IDs, len(clients.list))
+
+	return true, nil
 }
 
 // Del removes a client.  ok is false if there is no such client.
@@ -649,53 +645,86 @@ func (clients *clientsContainer) Del(name string) (ok bool) {
 		log.Error("client container: removing client %s: %s", name, err)
 	}
 
-	clients.del(c)
-
-	return true
-}
-
-// del removes c from the indexes. clients.lock is expected to be locked.
-func (clients *clientsContainer) del(c *Client) {
 	// update Name index
-	delete(clients.list, c.Name)
+	delete(clients.list, name)
 
 	// update ID index
 	for _, id := range c.IDs {
 		delete(clients.idIndex, id)
 	}
+
+	return true
 }
 
 // Update updates a client by its name.
-func (clients *clientsContainer) Update(prev, c *Client) (err error) {
+func (clients *clientsContainer) Update(name string, c *Client) (err error) {
 	err = clients.check(c)
 	if err != nil {
-		// Don't wrap the error since it's informative enough as is.
 		return err
 	}
 
 	clients.lock.Lock()
 	defer clients.lock.Unlock()
 
-	// Check the name index.
+	prev, ok := clients.list[name]
+	if !ok {
+		return errors.Error("client not found")
+	}
+
+	// First, check the name index.
 	if prev.Name != c.Name {
-		_, ok := clients.list[c.Name]
+		_, ok = clients.list[c.Name]
 		if ok {
 			return errors.Error("client already exists")
 		}
 	}
 
-	// Check the ID index.
-	if !slices.Equal(prev.IDs, c.IDs) {
-		for _, id := range c.IDs {
-			existing, ok := clients.idIndex[id]
-			if ok && existing != prev {
-				return fmt.Errorf("id %q is used by client with name %q", id, existing.Name)
-			}
+	// Second, update the ID index.
+	err = clients.updateIDIndex(prev, c.IDs)
+	if err != nil {
+		// Don't wrap the error, because it's informative enough as is.
+		return err
+	}
+
+	// Update name index.
+	if prev.Name != c.Name {
+		delete(clients.list, prev.Name)
+		clients.list[c.Name] = prev
+	}
+
+	// Update upstreams cache.
+	err = c.closeUpstreams()
+	if err != nil {
+		return err
+	}
+
+	*prev = *c
+
+	return nil
+}
+
+// updateIDIndex updates the ID index data for cli using the information from
+// newIDs.
+func (clients *clientsContainer) updateIDIndex(cli *Client, newIDs []string) (err error) {
+	if slices.Equal(cli.IDs, newIDs) {
+		return nil
+	}
+
+	for _, id := range newIDs {
+		existing, ok := clients.idIndex[id]
+		if ok && existing != cli {
+			return fmt.Errorf("id %q is used by client with name %q", id, existing.Name)
 		}
 	}
 
-	clients.del(prev)
-	clients.add(c)
+	// Update the IDs in the index.
+	for _, id := range cli.IDs {
+		delete(clients.idIndex, id)
+	}
+
+	for _, id := range newIDs {
+		clients.idIndex[id] = cli
+	}
 
 	return nil
 }

internal/home/clients_test.go

@@ -98,8 +98,22 @@ func TestClients(t *testing.T) {
 		assert.False(t, ok)
 	})
 
+	t.Run("update_fail_name", func(t *testing.T) {
+		err := clients.Update("client3", &Client{
+			IDs:  []string{"1.2.3.0"},
+			Name: "client3",
+		})
+		require.Error(t, err)
+
+		err = clients.Update("client3", &Client{
+			IDs:  []string{"1.2.3.0"},
+			Name: "client2",
+		})
+		assert.Error(t, err)
+	})
+
 	t.Run("update_fail_ip", func(t *testing.T) {
-		err := clients.Update(&Client{Name: "client1"}, &Client{
+		err := clients.Update("client1", &Client{
 			IDs:  []string{"2.2.2.2"},
 			Name: "client1",
 		})
@@ -115,10 +129,7 @@ func TestClients(t *testing.T) {
 			cliNewIP = netip.MustParseAddr(cliNew)
 		)
 
-		prev, ok := clients.list["client1"]
-		require.True(t, ok)
-
-		err := clients.Update(prev, &Client{
+		err := clients.Update("client1", &Client{
 			IDs:  []string{cliNew},
 			Name: "client1",
 		})
@@ -127,10 +138,7 @@ func TestClients(t *testing.T) {
 		assert.Equal(t, clients.clientSource(cliOldIP), ClientSourceNone)
 		assert.Equal(t, clients.clientSource(cliNewIP), ClientSourcePersistent)
 
-		prev, ok = clients.list["client1"]
-		require.True(t, ok)
-
-		err = clients.Update(prev, &Client{
+		err = clients.Update("client1", &Client{
 			IDs:            []string{cliNew},
 			Name:           "client1-renamed",
 			UseOwnSettings: true,

internal/home/clientshttp.go

@@ -289,7 +289,7 @@ func (clients *clientsContainer) handleUpdateClient(w http.ResponseWriter, r *ht
 		return
 	}
 
-	err = clients.Update(prev, c)
+	err = clients.Update(dj.Name, c)
 	if err != nil {
 		aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
 

internal/next/agh/agh.go

@@ -0,0 +1,63 @@
+// Package agh contains common entities and interfaces of AdGuard Home.
+package agh
+
+import "context"
+
+// Service is the interface for API servers.
+//
+// TODO(a.garipov): Consider adding a context to Start.
+//
+// TODO(a.garipov): Consider adding a Wait method or making an extension
+// interface for that.
+type Service interface {
+	// Start starts the service.  It does not block.
+	Start() (err error)
+
+	// Shutdown gracefully stops the service.  ctx is used to determine
+	// a timeout before trying to stop the service less gracefully.
+	Shutdown(ctx context.Context) (err error)
+}
+
+// type check
+var _ Service = EmptyService{}
+
+// EmptyService is a [Service] that does nothing.
+//
+// TODO(a.garipov): Remove if unnecessary.
+type EmptyService struct{}
+
+// Start implements the [Service] interface for EmptyService.
+func (EmptyService) Start() (err error) { return nil }
+
+// Shutdown implements the [Service] interface for EmptyService.
+func (EmptyService) Shutdown(_ context.Context) (err error) { return nil }
+
+// ServiceWithConfig is an extension of the [Service] interface for services
+// that can return their configuration.
+//
+// TODO(a.garipov): Consider removing this generic interface if we figure out
+// how to make it testable in a better way.
+type ServiceWithConfig[ConfigType any] interface {
+	Service
+
+	Config() (c ConfigType)
+}
+
+// type check
+var _ ServiceWithConfig[struct{}] = (*EmptyServiceWithConfig[struct{}])(nil)
+
+// EmptyServiceWithConfig is a ServiceWithConfig that does nothing.  Its Config
+// method returns Conf.
+//
+// TODO(a.garipov): Remove if unnecessary.
+type EmptyServiceWithConfig[ConfigType any] struct {
+	EmptyService
+
+	Conf ConfigType
+}
+
+// Config implements the [ServiceWithConfig] interface for
+// *EmptyServiceWithConfig.
+func (s *EmptyServiceWithConfig[ConfigType]) Config() (conf ConfigType) {
+	return s.Conf
+}

internal/next/cmd/cmd.go

@@ -0,0 +1,77 @@
+// Package cmd is the AdGuard Home entry point.  It contains the on-disk
+// configuration file utilities, signal processing logic, and so on.
+//
+// TODO(a.garipov): Move to the upper-level internal/.
+package cmd
+
+import (
+	"context"
+	"io/fs"
+	"math/rand"
+	"os"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/configmgr"
+	"github.com/AdguardTeam/AdGuardHome/internal/version"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// Main is the entry point of application.
+func Main(clientBuildFS fs.FS) {
+	// Initial Configuration
+
+	start := time.Now()
+	rand.Seed(start.UnixNano())
+
+	// TODO(a.garipov): Set up logging.
+
+	log.Info("starting adguard home, version %s, pid %d", version.Version(), os.Getpid())
+
+	// Web Service
+
+	// TODO(a.garipov): Use in the Web service.
+	_ = clientBuildFS
+
+	// TODO(a.garipov): Set up configuration file name.
+	const confFile = "AdGuardHome.1.yaml"
+
+	confMgr, err := configmgr.New(confFile, start)
+	fatalOnError(err)
+
+	web := confMgr.Web()
+	err = web.Start()
+	fatalOnError(err)
+
+	dns := confMgr.DNS()
+	err = dns.Start()
+	fatalOnError(err)
+
+	sigHdlr := newSignalHandler(
+		confFile,
+		start,
+		web,
+		dns,
+	)
+
+	go sigHdlr.handle()
+
+	select {}
+}
+
+// defaultTimeout is the timeout used for some operations where another timeout
+// hasn't been defined yet.
+const defaultTimeout = 15 * time.Second
+
+// ctxWithDefaultTimeout is a helper function that returns a context with
+// timeout set to defaultTimeout.
+func ctxWithDefaultTimeout() (ctx context.Context, cancel context.CancelFunc) {
+	return context.WithTimeout(context.Background(), defaultTimeout)
+}
+
+// fatalOnError is a helper that exits the program with an error code if err is
+// not nil.  It must only be used within Main.
+func fatalOnError(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}

internal/next/cmd/signal.go

@@ -0,0 +1,118 @@
+package cmd
+
+import (
+	"os"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghos"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/configmgr"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// signalHandler processes incoming signals and shuts services down.
+type signalHandler struct {
+	// signal is the channel to which OS signals are sent.
+	signal chan os.Signal
+
+	// confFile is the path to the configuration file.
+	confFile string
+
+	// start is the time at which AdGuard Home has been started.
+	start time.Time
+
+	// services are the services that are shut down before application exiting.
+	services []agh.Service
+}
+
+// handle processes OS signals.
+func (h *signalHandler) handle() {
+	defer log.OnPanic("signalHandler.handle")
+
+	for sig := range h.signal {
+		log.Info("sighdlr: received signal %q", sig)
+
+		if aghos.IsReconfigureSignal(sig) {
+			h.reconfigure()
+		} else if aghos.IsShutdownSignal(sig) {
+			status := h.shutdown()
+			log.Info("sighdlr: exiting with status %d", status)
+
+			os.Exit(status)
+		}
+	}
+}
+
+// reconfigure rereads the configuration file and updates and restarts services.
+func (h *signalHandler) reconfigure() {
+	log.Info("sighdlr: reconfiguring adguard home")
+
+	status := h.shutdown()
+	if status != statusSuccess {
+		log.Info("sighdlr: reconfiruging: exiting with status %d", status)
+
+		os.Exit(status)
+	}
+
+	// TODO(a.garipov): This is a very rough way to do it.  Some services can be
+	// reconfigured without the full shutdown, and the error handling is
+	// currently not the best.
+
+	confMgr, err := configmgr.New(h.confFile, h.start)
+	fatalOnError(err)
+
+	web := confMgr.Web()
+	err = web.Start()
+	fatalOnError(err)
+
+	dns := confMgr.DNS()
+	err = dns.Start()
+	fatalOnError(err)
+
+	h.services = []agh.Service{
+		dns,
+		web,
+	}
+
+	log.Info("sighdlr: successfully reconfigured adguard home")
+}
+
+// Exit status constants.
+const (
+	statusSuccess = 0
+	statusError   = 1
+)
+
+// shutdown gracefully shuts down all services.
+func (h *signalHandler) shutdown() (status int) {
+	ctx, cancel := ctxWithDefaultTimeout()
+	defer cancel()
+
+	status = statusSuccess
+
+	log.Info("sighdlr: shutting down services")
+	for i, service := range h.services {
+		err := service.Shutdown(ctx)
+		if err != nil {
+			log.Error("sighdlr: shutting down service at index %d: %s", i, err)
+			status = statusError
+		}
+	}
+
+	return status
+}
+
+// newSignalHandler returns a new signalHandler that shuts down svcs.
+func newSignalHandler(confFile string, start time.Time, svcs ...agh.Service) (h *signalHandler) {
+	h = &signalHandler{
+		signal:   make(chan os.Signal, 1),
+		confFile: confFile,
+		start:    start,
+		services: svcs,
+	}
+
+	aghos.NotifyShutdownSignal(h.signal)
+	aghos.NotifyReconfigureSignal(h.signal)
+
+	return h
+}

internal/next/configmgr/config.go

@@ -0,0 +1,40 @@
+package configmgr
+
+import (
+	"net/netip"
+
+	"github.com/AdguardTeam/golibs/timeutil"
+)
+
+// Configuration Structures
+
+// config is the top-level on-disk configuration structure.
+type config struct {
+	DNS  *dnsConfig  `yaml:"dns"`
+	HTTP *httpConfig `yaml:"http"`
+	// TODO(a.garipov): Use.
+	SchemaVersion int `yaml:"schema_version"`
+	// TODO(a.garipov): Use.
+	DebugPprof bool `yaml:"debug_pprof"`
+	Verbose    bool `yaml:"verbose"`
+}
+
+// dnsConfig is the on-disk DNS configuration.
+//
+// TODO(a.garipov): Validate.
+type dnsConfig struct {
+	Addresses       []netip.AddrPort  `yaml:"addresses"`
+	BootstrapDNS    []string          `yaml:"bootstrap_dns"`
+	UpstreamDNS     []string          `yaml:"upstream_dns"`
+	UpstreamTimeout timeutil.Duration `yaml:"upstream_timeout"`
+}
+
+// httpConfig is the on-disk web API configuration.
+//
+// TODO(a.garipov): Validate.
+type httpConfig struct {
+	Addresses       []netip.AddrPort  `yaml:"addresses"`
+	SecureAddresses []netip.AddrPort  `yaml:"secure_addresses"`
+	Timeout         timeutil.Duration `yaml:"timeout"`
+	ForceHTTPS      bool              `yaml:"force_https"`
+}

internal/next/configmgr/configmgr.go

@@ -0,0 +1,205 @@
+// Package configmgr defines the AdGuard Home on-disk configuration entities and
+// configuration manager.
+package configmgr
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/AdguardTeam/golibs/errors"
+	"github.com/AdguardTeam/golibs/log"
+	"gopkg.in/yaml.v3"
+)
+
+// Configuration Manager
+
+// Manager handles full and partial changes in the configuration, persisting
+// them to disk if necessary.
+type Manager struct {
+	// updMu makes sure that at most one reconfiguration is performed at a time.
+	// updMu protects all fields below.
+	updMu *sync.RWMutex
+
+	// dns is the DNS service.
+	dns *dnssvc.Service
+
+	// Web is the Web API service.
+	web *websvc.Service
+
+	// current is the current configuration.
+	current *config
+
+	// fileName is the name of the configuration file.
+	fileName string
+}
+
+// New creates a new *Manager that persists changes to the file pointed to by
+// fileName.  It reads the configuration file and populates the service fields.
+// start is the startup time of AdGuard Home.
+func New(fileName string, start time.Time) (m *Manager, err error) {
+	defer func() { err = errors.Annotate(err, "reading config") }()
+
+	conf := &config{}
+	f, err := os.Open(fileName)
+	if err != nil {
+		// Don't wrap the error, because it's informative enough as is.
+		return nil, err
+	}
+	defer func() { err = errors.WithDeferred(err, f.Close()) }()
+
+	err = yaml.NewDecoder(f).Decode(conf)
+	if err != nil {
+		// Don't wrap the error, because it's informative enough as is.
+		return nil, err
+	}
+
+	// TODO(a.garipov): Move into a separate function and add other logging
+	// settings.
+	if conf.Verbose {
+		log.SetLevel(log.DEBUG)
+	}
+
+	// TODO(a.garipov): Validate the configuration structure.  Return an error
+	// if it's incorrect.
+
+	m = &Manager{
+		updMu:    &sync.RWMutex{},
+		current:  conf,
+		fileName: fileName,
+	}
+
+	// TODO(a.garipov): Get the context with the timeout from the arguments?
+	const assemblyTimeout = 5 * time.Second
+	ctx, cancel := context.WithTimeout(context.Background(), assemblyTimeout)
+	defer cancel()
+
+	err = m.assemble(ctx, conf, start)
+	if err != nil {
+		// Don't wrap the error, because it's informative enough as is.
+		return nil, err
+	}
+
+	return m, nil
+}
+
+// assemble creates all services and puts them into the corresponding fields.
+// The fields of conf must not be modified after calling assemble.
+func (m *Manager) assemble(ctx context.Context, conf *config, start time.Time) (err error) {
+	dnsConf := &dnssvc.Config{
+		Addresses:        conf.DNS.Addresses,
+		BootstrapServers: conf.DNS.BootstrapDNS,
+		UpstreamServers:  conf.DNS.UpstreamDNS,
+		UpstreamTimeout:  conf.DNS.UpstreamTimeout.Duration,
+	}
+	err = m.updateDNS(ctx, dnsConf)
+	if err != nil {
+		return fmt.Errorf("assembling dnssvc: %w", err)
+	}
+
+	webSvcConf := &websvc.Config{
+		ConfigManager: m,
+		// TODO(a.garipov): Fill from config file.
+		TLS:             nil,
+		Start:           start,
+		Addresses:       conf.HTTP.Addresses,
+		SecureAddresses: conf.HTTP.SecureAddresses,
+		Timeout:         conf.HTTP.Timeout.Duration,
+		ForceHTTPS:      conf.HTTP.ForceHTTPS,
+	}
+
+	err = m.updateWeb(ctx, webSvcConf)
+	if err != nil {
+		return fmt.Errorf("assembling websvc: %w", err)
+	}
+
+	return nil
+}
+
+// DNS returns the current DNS service.  It is safe for concurrent use.
+func (m *Manager) DNS() (dns agh.ServiceWithConfig[*dnssvc.Config]) {
+	m.updMu.RLock()
+	defer m.updMu.RUnlock()
+
+	return m.dns
+}
+
+// UpdateDNS implements the [websvc.ConfigManager] interface for *Manager.  The
+// fields of c must not be modified after calling UpdateDNS.
+func (m *Manager) UpdateDNS(ctx context.Context, c *dnssvc.Config) (err error) {
+	m.updMu.Lock()
+	defer m.updMu.Unlock()
+
+	// TODO(a.garipov): Update and write the configuration file.  Return an
+	// error if something went wrong.
+
+	err = m.updateDNS(ctx, c)
+	if err != nil {
+		return fmt.Errorf("reassembling dnssvc: %w", err)
+	}
+
+	return nil
+}
+
+// updateDNS recreates the DNS service.  m.updMu is expected to be locked.
+func (m *Manager) updateDNS(ctx context.Context, c *dnssvc.Config) (err error) {
+	if prev := m.dns; prev != nil {
+		err = prev.Shutdown(ctx)
+		if err != nil {
+			return fmt.Errorf("shutting down dns svc: %w", err)
+		}
+	}
+
+	svc, err := dnssvc.New(c)
+	if err != nil {
+		return fmt.Errorf("creating dns svc: %w", err)
+	}
+
+	m.dns = svc
+
+	return nil
+}
+
+// Web returns the current web service.  It is safe for concurrent use.
+func (m *Manager) Web() (web agh.ServiceWithConfig[*websvc.Config]) {
+	m.updMu.RLock()
+	defer m.updMu.RUnlock()
+
+	return m.web
+}
+
+// UpdateWeb implements the [websvc.ConfigManager] interface for *Manager.  The
+// fields of c must not be modified after calling UpdateWeb.
+func (m *Manager) UpdateWeb(ctx context.Context, c *websvc.Config) (err error) {
+	m.updMu.Lock()
+	defer m.updMu.Unlock()
+
+	// TODO(a.garipov): Update and write the configuration file.  Return an
+	// error if something went wrong.
+
+	err = m.updateWeb(ctx, c)
+	if err != nil {
+		return fmt.Errorf("reassembling websvc: %w", err)
+	}
+
+	return nil
+}
+
+// updateWeb recreates the web service.  m.upd is expected to be locked.
+func (m *Manager) updateWeb(ctx context.Context, c *websvc.Config) (err error) {
+	if prev := m.web; prev != nil {
+		err = prev.Shutdown(ctx)
+		if err != nil {
+			return fmt.Errorf("shutting down web svc: %w", err)
+		}
+	}
+
+	m.web = websvc.New(c)
+
+	return nil
+}

internal/next/dnssvc/dnssvc.go

@@ -0,0 +1,216 @@
+// Package dnssvc contains the AdGuard Home DNS service.
+//
+// TODO(a.garipov): Define, if all methods of a *Service should work with a nil
+// receiver.
+package dnssvc
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/netip"
+	"sync/atomic"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	// TODO(a.garipov): Add a “dnsproxy proxy” package to shield us from changes
+	// and replacement of module dnsproxy.
+	"github.com/AdguardTeam/dnsproxy/proxy"
+	"github.com/AdguardTeam/dnsproxy/upstream"
+)
+
+// Config is the AdGuard Home DNS service configuration structure.
+//
+// TODO(a.garipov): Add timeout for incoming requests.
+type Config struct {
+	// Addresses are the addresses on which to serve plain DNS queries.
+	Addresses []netip.AddrPort
+
+	// Upstreams are the DNS upstreams to use.  If not set, upstreams are
+	// created using data from BootstrapServers, UpstreamServers, and
+	// UpstreamTimeout.
+	//
+	// TODO(a.garipov): Think of a better scheme.  Those other three parameters
+	// are here only to make Config work properly.
+	Upstreams []upstream.Upstream
+
+	// BootstrapServers are the addresses for bootstrapping the upstream DNS
+	// server addresses.
+	BootstrapServers []string
+
+	// UpstreamServers are the upstream DNS server addresses to use.
+	UpstreamServers []string
+
+	// UpstreamTimeout is the timeout for upstream requests.
+	UpstreamTimeout time.Duration
+}
+
+// Service is the AdGuard Home DNS service.  A nil *Service is a valid
+// [agh.Service] that does nothing.
+type Service struct {
+	proxy      *proxy.Proxy
+	bootstraps []string
+	upstreams  []string
+	upsTimeout time.Duration
+	running    atomic.Bool
+}
+
+// New returns a new properly initialized *Service.  If c is nil, svc is a nil
+// *Service that does nothing.  The fields of c must not be modified after
+// calling New.
+func New(c *Config) (svc *Service, err error) {
+	if c == nil {
+		return nil, nil
+	}
+
+	svc = &Service{
+		bootstraps: c.BootstrapServers,
+		upstreams:  c.UpstreamServers,
+		upsTimeout: c.UpstreamTimeout,
+	}
+
+	var upstreams []upstream.Upstream
+	if len(c.Upstreams) > 0 {
+		upstreams = c.Upstreams
+	} else {
+		upstreams, err = addressesToUpstreams(
+			c.UpstreamServers,
+			c.BootstrapServers,
+			c.UpstreamTimeout,
+		)
+		if err != nil {
+			return nil, fmt.Errorf("converting upstreams: %w", err)
+		}
+	}
+
+	svc.proxy = &proxy.Proxy{
+		Config: proxy.Config{
+			UDPListenAddr: udpAddrs(c.Addresses),
+			TCPListenAddr: tcpAddrs(c.Addresses),
+			UpstreamConfig: &proxy.UpstreamConfig{
+				Upstreams: upstreams,
+			},
+		},
+	}
+
+	err = svc.proxy.Init()
+	if err != nil {
+		return nil, fmt.Errorf("proxy: %w", err)
+	}
+
+	return svc, nil
+}
+
+// addressesToUpstreams is a wrapper around [upstream.AddressToUpstream].  It
+// accepts a slice of addresses and other upstream parameters, and returns a
+// slice of upstreams.
+func addressesToUpstreams(
+	upsStrs []string,
+	bootstraps []string,
+	timeout time.Duration,
+) (upstreams []upstream.Upstream, err error) {
+	upstreams = make([]upstream.Upstream, len(upsStrs))
+	for i, upsStr := range upsStrs {
+		upstreams[i], err = upstream.AddressToUpstream(upsStr, &upstream.Options{
+			Bootstrap: bootstraps,
+			Timeout:   timeout,
+		})
+		if err != nil {
+			return nil, fmt.Errorf("upstream at index %d: %w", i, err)
+		}
+	}
+
+	return upstreams, nil
+}
+
+// tcpAddrs converts []netip.AddrPort into []*net.TCPAddr.
+func tcpAddrs(addrPorts []netip.AddrPort) (tcpAddrs []*net.TCPAddr) {
+	if addrPorts == nil {
+		return nil
+	}
+
+	tcpAddrs = make([]*net.TCPAddr, len(addrPorts))
+	for i, a := range addrPorts {
+		tcpAddrs[i] = net.TCPAddrFromAddrPort(a)
+	}
+
+	return tcpAddrs
+}
+
+// udpAddrs converts []netip.AddrPort into []*net.UDPAddr.
+func udpAddrs(addrPorts []netip.AddrPort) (udpAddrs []*net.UDPAddr) {
+	if addrPorts == nil {
+		return nil
+	}
+
+	udpAddrs = make([]*net.UDPAddr, len(addrPorts))
+	for i, a := range addrPorts {
+		udpAddrs[i] = net.UDPAddrFromAddrPort(a)
+	}
+
+	return udpAddrs
+}
+
+// type check
+var _ agh.Service = (*Service)(nil)
+
+// Start implements the [agh.Service] interface for *Service.  svc may be nil.
+// After Start exits, all DNS servers have tried to start, but there is no
+// guarantee that they did.  Errors from the servers are written to the log.
+func (svc *Service) Start() (err error) {
+	if svc == nil {
+		return nil
+	}
+
+	defer func() {
+		// TODO(a.garipov): [proxy.Proxy.Start] doesn't actually have any way to
+		// tell when all servers are actually up, so at best this is merely an
+		// assumption.
+		svc.running.Store(err == nil)
+	}()
+
+	return svc.proxy.Start()
+}
+
+// Shutdown implements the [agh.Service] interface for *Service.  svc may be
+// nil.
+func (svc *Service) Shutdown(ctx context.Context) (err error) {
+	if svc == nil {
+		return nil
+	}
+
+	return svc.proxy.Stop()
+}
+
+// Config returns the current configuration of the web service.  Config must not
+// be called simultaneously with Start.  If svc was initialized with ":0"
+// addresses, addrs will not return the actual bound ports until Start is
+// finished.
+func (svc *Service) Config() (c *Config) {
+	// TODO(a.garipov): Do we need to get the TCP addresses separately?
+
+	var addrs []netip.AddrPort
+	if svc.running.Load() {
+		udpAddrs := svc.proxy.Addrs(proxy.ProtoUDP)
+		addrs = make([]netip.AddrPort, len(udpAddrs))
+		for i, a := range udpAddrs {
+			addrs[i] = a.(*net.UDPAddr).AddrPort()
+		}
+	} else {
+		conf := svc.proxy.Config
+		udpAddrs := conf.UDPListenAddr
+		addrs = make([]netip.AddrPort, len(udpAddrs))
+		for i, a := range udpAddrs {
+			addrs[i] = a.AddrPort()
+		}
+	}
+
+	c = &Config{
+		Addresses:        addrs,
+		BootstrapServers: svc.bootstraps,
+		UpstreamServers:  svc.upstreams,
+		UpstreamTimeout:  svc.upsTimeout,
+	}
+
+	return c
+}

internal/next/dnssvc/dnssvc_test.go

@@ -0,0 +1,96 @@
+package dnssvc_test
+
+import (
+	"context"
+	"net/netip"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/dnsproxy/upstream"
+	"github.com/AdguardTeam/golibs/errors"
+	"github.com/AdguardTeam/golibs/testutil"
+	"github.com/miekg/dns"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMain(m *testing.M) {
+	testutil.DiscardLogOutput(m)
+}
+
+// testTimeout is the common timeout for tests.
+const testTimeout = 100 * time.Millisecond
+
+func TestService(t *testing.T) {
+	const (
+		bootstrapAddr = "bootstrap.example"
+		upstreamAddr  = "upstream.example"
+
+		closeErr errors.Error = "closing failed"
+	)
+
+	ups := &aghtest.UpstreamMock{
+		OnAddress: func() (addr string) {
+			return upstreamAddr
+		},
+		OnExchange: func(req *dns.Msg) (resp *dns.Msg, err error) {
+			resp = (&dns.Msg{}).SetReply(req)
+
+			return resp, nil
+		},
+		OnClose: func() (err error) {
+			return closeErr
+		},
+	}
+
+	c := &dnssvc.Config{
+		Addresses:        []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:0")},
+		Upstreams:        []upstream.Upstream{ups},
+		BootstrapServers: []string{bootstrapAddr},
+		UpstreamServers:  []string{upstreamAddr},
+		UpstreamTimeout:  testTimeout,
+	}
+
+	svc, err := dnssvc.New(c)
+	require.NoError(t, err)
+
+	err = svc.Start()
+	require.NoError(t, err)
+
+	gotConf := svc.Config()
+	require.NotNil(t, gotConf)
+	require.Len(t, gotConf.Addresses, 1)
+
+	addr := gotConf.Addresses[0]
+
+	t.Run("dns", func(t *testing.T) {
+		req := &dns.Msg{
+			MsgHdr: dns.MsgHdr{
+				Id:               dns.Id(),
+				RecursionDesired: true,
+			},
+			Question: []dns.Question{{
+				Name:   "example.com.",
+				Qtype:  dns.TypeA,
+				Qclass: dns.ClassINET,
+			}},
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
+		defer cancel()
+
+		cli := &dns.Client{}
+		resp, _, excErr := cli.ExchangeContext(ctx, req, addr.String())
+		require.NoError(t, excErr)
+
+		assert.NotNil(t, resp)
+	})
+
+	ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
+	defer cancel()
+
+	err = svc.Shutdown(ctx)
+	require.ErrorIs(t, err, closeErr)
+}

internal/next/websvc/dns.go

@@ -0,0 +1,84 @@
+package websvc
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/netip"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+)
+
+// DNS Settings Handlers
+
+// ReqPatchSettingsDNS describes the request to the PATCH /api/v1/settings/dns
+// HTTP API.
+type ReqPatchSettingsDNS struct {
+	// TODO(a.garipov): Add more as we go.
+
+	Addresses        []netip.AddrPort `json:"addresses"`
+	BootstrapServers []string         `json:"bootstrap_servers"`
+	UpstreamServers  []string         `json:"upstream_servers"`
+	UpstreamTimeout  JSONDuration     `json:"upstream_timeout"`
+}
+
+// HTTPAPIDNSSettings are the DNS settings as used by the HTTP API.  See the
+// DnsSettings object in the OpenAPI specification.
+type HTTPAPIDNSSettings struct {
+	// TODO(a.garipov): Add more as we go.
+
+	Addresses        []netip.AddrPort `json:"addresses"`
+	BootstrapServers []string         `json:"bootstrap_servers"`
+	UpstreamServers  []string         `json:"upstream_servers"`
+	UpstreamTimeout  JSONDuration     `json:"upstream_timeout"`
+}
+
+// handlePatchSettingsDNS is the handler for the PATCH /api/v1/settings/dns HTTP
+// API.
+func (svc *Service) handlePatchSettingsDNS(w http.ResponseWriter, r *http.Request) {
+	req := &ReqPatchSettingsDNS{
+		Addresses:        []netip.AddrPort{},
+		BootstrapServers: []string{},
+		UpstreamServers:  []string{},
+	}
+
+	// TODO(a.garipov): Validate nulls and proper JSON patch.
+
+	err := json.NewDecoder(r.Body).Decode(&req)
+	if err != nil {
+		writeJSONErrorResponse(w, r, fmt.Errorf("decoding: %w", err))
+
+		return
+	}
+
+	newConf := &dnssvc.Config{
+		Addresses:        req.Addresses,
+		BootstrapServers: req.BootstrapServers,
+		UpstreamServers:  req.UpstreamServers,
+		UpstreamTimeout:  time.Duration(req.UpstreamTimeout),
+	}
+
+	ctx := r.Context()
+	err = svc.confMgr.UpdateDNS(ctx, newConf)
+	if err != nil {
+		writeJSONErrorResponse(w, r, fmt.Errorf("updating: %w", err))
+
+		return
+	}
+
+	newSvc := svc.confMgr.DNS()
+	err = newSvc.Start()
+	if err != nil {
+		writeJSONErrorResponse(w, r, fmt.Errorf("starting new service: %w", err))
+
+		return
+	}
+
+	writeJSONOKResponse(w, r, &HTTPAPIDNSSettings{
+		Addresses:        newConf.Addresses,
+		BootstrapServers: newConf.BootstrapServers,
+		UpstreamServers:  newConf.UpstreamServers,
+		UpstreamTimeout:  JSONDuration(newConf.UpstreamTimeout),
+	})
+}

internal/next/websvc/dns_test.go

@@ -0,0 +1,68 @@
+package websvc_test
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestService_HandlePatchSettingsDNS(t *testing.T) {
+	wantDNS := &websvc.HTTPAPIDNSSettings{
+		Addresses:        []netip.AddrPort{netip.MustParseAddrPort("127.0.1.1:53")},
+		BootstrapServers: []string{"1.0.0.1"},
+		UpstreamServers:  []string{"1.1.1.1"},
+		UpstreamTimeout:  websvc.JSONDuration(2 * time.Second),
+	}
+
+	var started atomic.Bool
+	confMgr := newConfigManager()
+	confMgr.onDNS = func() (s agh.ServiceWithConfig[*dnssvc.Config]) {
+		return &aghtest.ServiceWithConfig[*dnssvc.Config]{
+			OnStart: func() (err error) {
+				started.Store(true)
+
+				return nil
+			},
+			OnShutdown: func(_ context.Context) (err error) { panic("not implemented") },
+			OnConfig:   func() (c *dnssvc.Config) { panic("not implemented") },
+		}
+	}
+	confMgr.onUpdateDNS = func(ctx context.Context, c *dnssvc.Config) (err error) {
+		return nil
+	}
+
+	_, addr := newTestServer(t, confMgr)
+	u := &url.URL{
+		Scheme: "http",
+		Host:   addr.String(),
+		Path:   websvc.PathV1SettingsDNS,
+	}
+
+	req := jobj{
+		"addresses":         wantDNS.Addresses,
+		"bootstrap_servers": wantDNS.BootstrapServers,
+		"upstream_servers":  wantDNS.UpstreamServers,
+		"upstream_timeout":  wantDNS.UpstreamTimeout,
+	}
+
+	respBody := httpPatch(t, u, req, http.StatusOK)
+	resp := &websvc.HTTPAPIDNSSettings{}
+	err := json.Unmarshal(respBody, resp)
+	require.NoError(t, err)
+
+	assert.True(t, started.Load())
+	assert.Equal(t, wantDNS, resp)
+	assert.Equal(t, wantDNS, resp)
+}

internal/next/websvc/http.go

@@ -0,0 +1,110 @@
+package websvc
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/netip"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// HTTP Settings Handlers
+
+// ReqPatchSettingsHTTP describes the request to the PATCH /api/v1/settings/http
+// HTTP API.
+type ReqPatchSettingsHTTP struct {
+	// TODO(a.garipov): Add more as we go.
+	//
+	// TODO(a.garipov): Add wait time.
+
+	Addresses       []netip.AddrPort `json:"addresses"`
+	SecureAddresses []netip.AddrPort `json:"secure_addresses"`
+	Timeout         JSONDuration     `json:"timeout"`
+}
+
+// HTTPAPIHTTPSettings are the HTTP settings as used by the HTTP API.  See the
+// HttpSettings object in the OpenAPI specification.
+type HTTPAPIHTTPSettings struct {
+	// TODO(a.garipov): Add more as we go.
+
+	Addresses       []netip.AddrPort `json:"addresses"`
+	SecureAddresses []netip.AddrPort `json:"secure_addresses"`
+	Timeout         JSONDuration     `json:"timeout"`
+	ForceHTTPS      bool             `json:"force_https"`
+}
+
+// handlePatchSettingsHTTP is the handler for the PATCH /api/v1/settings/http
+// HTTP API.
+func (svc *Service) handlePatchSettingsHTTP(w http.ResponseWriter, r *http.Request) {
+	req := &ReqPatchSettingsHTTP{}
+
+	// TODO(a.garipov): Validate nulls and proper JSON patch.
+
+	err := json.NewDecoder(r.Body).Decode(&req)
+	if err != nil {
+		writeJSONErrorResponse(w, r, fmt.Errorf("decoding: %w", err))
+
+		return
+	}
+
+	newConf := &Config{
+		ConfigManager:   svc.confMgr,
+		TLS:             svc.tls,
+		Addresses:       req.Addresses,
+		SecureAddresses: req.SecureAddresses,
+		Timeout:         time.Duration(req.Timeout),
+		ForceHTTPS:      svc.forceHTTPS,
+	}
+
+	writeJSONOKResponse(w, r, &HTTPAPIHTTPSettings{
+		Addresses:       newConf.Addresses,
+		SecureAddresses: newConf.SecureAddresses,
+		Timeout:         JSONDuration(newConf.Timeout),
+		ForceHTTPS:      newConf.ForceHTTPS,
+	})
+
+	cancelUpd := func() {}
+	updCtx := context.Background()
+
+	ctx := r.Context()
+	if deadline, ok := ctx.Deadline(); ok {
+		updCtx, cancelUpd = context.WithDeadline(updCtx, deadline)
+	}
+
+	// Launch the new HTTP service in a separate goroutine to let this handler
+	// finish and thus, this server to shutdown.
+	go func() {
+		defer cancelUpd()
+
+		updErr := svc.confMgr.UpdateWeb(updCtx, newConf)
+		if updErr != nil {
+			writeJSONErrorResponse(w, r, fmt.Errorf("updating: %w", updErr))
+
+			return
+		}
+
+		// TODO(a.garipov): Consider better ways to do this.
+		const maxUpdDur = 10 * time.Second
+		updStart := time.Now()
+		var newSvc agh.ServiceWithConfig[*Config]
+		for newSvc = svc.confMgr.Web(); newSvc == svc; {
+			if time.Since(updStart) >= maxUpdDur {
+				log.Error("websvc: failed to update svc after %s", maxUpdDur)
+
+				return
+			}
+
+			log.Debug("websvc: waiting for new websvc to be configured")
+			time.Sleep(1 * time.Second)
+		}
+
+		updErr = newSvc.Start()
+		if updErr != nil {
+			log.Error("websvc: new svc failed to start with error: %s", updErr)
+		}
+	}()
+}

internal/next/websvc/http_test.go

@@ -0,0 +1,63 @@
+package websvc_test
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestService_HandlePatchSettingsHTTP(t *testing.T) {
+	wantWeb := &websvc.HTTPAPIHTTPSettings{
+		Addresses:       []netip.AddrPort{netip.MustParseAddrPort("127.0.1.1:80")},
+		SecureAddresses: []netip.AddrPort{netip.MustParseAddrPort("127.0.1.1:443")},
+		Timeout:         websvc.JSONDuration(10 * time.Second),
+		ForceHTTPS:      false,
+	}
+
+	confMgr := newConfigManager()
+	confMgr.onWeb = func() (s agh.ServiceWithConfig[*websvc.Config]) {
+		return websvc.New(&websvc.Config{
+			TLS: &tls.Config{
+				Certificates: []tls.Certificate{{}},
+			},
+			Addresses:       []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:80")},
+			SecureAddresses: []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:443")},
+			Timeout:         5 * time.Second,
+			ForceHTTPS:      true,
+		})
+	}
+	confMgr.onUpdateWeb = func(ctx context.Context, c *websvc.Config) (err error) {
+		return nil
+	}
+
+	_, addr := newTestServer(t, confMgr)
+	u := &url.URL{
+		Scheme: "http",
+		Host:   addr.String(),
+		Path:   websvc.PathV1SettingsHTTP,
+	}
+
+	req := jobj{
+		"addresses":        wantWeb.Addresses,
+		"secure_addresses": wantWeb.SecureAddresses,
+		"timeout":          wantWeb.Timeout,
+		"force_https":      wantWeb.ForceHTTPS,
+	}
+
+	respBody := httpPatch(t, u, req, http.StatusOK)
+	resp := &websvc.HTTPAPIHTTPSettings{}
+	err := json.Unmarshal(respBody, resp)
+	require.NoError(t, err)
+
+	assert.Equal(t, wantWeb, resp)
+}

internal/next/websvc/json.go

@@ -0,0 +1,144 @@
+package websvc
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
+	"github.com/AdguardTeam/golibs/httphdr"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// JSON Utilities
+
+// nsecPerMsec is the number of nanoseconds in a millisecond.
+const nsecPerMsec = float64(time.Millisecond / time.Nanosecond)
+
+// JSONDuration is a time.Duration that can be decoded from JSON and encoded
+// into JSON according to our API conventions.
+type JSONDuration time.Duration
+
+// type check
+var _ json.Marshaler = JSONDuration(0)
+
+// MarshalJSON implements the json.Marshaler interface for JSONDuration.  err is
+// always nil.
+func (d JSONDuration) MarshalJSON() (b []byte, err error) {
+	msec := float64(time.Duration(d)) / nsecPerMsec
+	b = strconv.AppendFloat(nil, msec, 'f', -1, 64)
+
+	return b, nil
+}
+
+// type check
+var _ json.Unmarshaler = (*JSONDuration)(nil)
+
+// UnmarshalJSON implements the json.Marshaler interface for *JSONDuration.
+func (d *JSONDuration) UnmarshalJSON(b []byte) (err error) {
+	if d == nil {
+		return fmt.Errorf("json duration is nil")
+	}
+
+	msec, err := strconv.ParseFloat(string(b), 64)
+	if err != nil {
+		return fmt.Errorf("parsing json time: %w", err)
+	}
+
+	*d = JSONDuration(int64(msec * nsecPerMsec))
+
+	return nil
+}
+
+// JSONTime is a time.Time that can be decoded from JSON and encoded into JSON
+// according to our API conventions.
+type JSONTime time.Time
+
+// type check
+var _ json.Marshaler = JSONTime{}
+
+// MarshalJSON implements the json.Marshaler interface for JSONTime.  err is
+// always nil.
+func (t JSONTime) MarshalJSON() (b []byte, err error) {
+	msec := float64(time.Time(t).UnixNano()) / nsecPerMsec
+	b = strconv.AppendFloat(nil, msec, 'f', -1, 64)
+
+	return b, nil
+}
+
+// type check
+var _ json.Unmarshaler = (*JSONTime)(nil)
+
+// UnmarshalJSON implements the json.Marshaler interface for *JSONTime.
+func (t *JSONTime) UnmarshalJSON(b []byte) (err error) {
+	if t == nil {
+		return fmt.Errorf("json time is nil")
+	}
+
+	msec, err := strconv.ParseFloat(string(b), 64)
+	if err != nil {
+		return fmt.Errorf("parsing json time: %w", err)
+	}
+
+	*t = JSONTime(time.Unix(0, int64(msec*nsecPerMsec)).UTC())
+
+	return nil
+}
+
+// writeJSONOKResponse writes headers with the code 200 OK, encodes v into w,
+// and logs any errors it encounters.  r is used to get additional information
+// from the request.
+func writeJSONOKResponse(w http.ResponseWriter, r *http.Request, v any) {
+	writeJSONResponse(w, r, v, http.StatusOK)
+}
+
+// writeJSONResponse writes headers with code, encodes v into w, and logs any
+// errors it encounters.  r is used to get additional information from the
+// request.
+func writeJSONResponse(w http.ResponseWriter, r *http.Request, v any, code int) {
+	// TODO(a.garipov): Put some of these to a middleware.
+	h := w.Header()
+	h.Set(httphdr.ContentType, aghhttp.HdrValApplicationJSON)
+	h.Set(httphdr.Server, aghhttp.UserAgent())
+
+	w.WriteHeader(code)
+
+	err := json.NewEncoder(w).Encode(v)
+	if err != nil {
+		log.Error("websvc: writing resp to %s %s: %s", r.Method, r.URL.Path, err)
+	}
+}
+
+// ErrorCode is the error code as used by the HTTP API.  See the ErrorCode
+// definition in the OpenAPI specification.
+type ErrorCode string
+
+// ErrorCode constants.
+//
+// TODO(a.garipov): Expand and document codes.
+const (
+	// ErrorCodeTMP000 is the temporary error code used for all errors.
+	ErrorCodeTMP000 = ""
+)
+
+// HTTPAPIErrorResp is the error response as used by the HTTP API.  See the
+// BadRequestResp, InternalServerErrorResp, and similar objects in the OpenAPI
+// specification.
+type HTTPAPIErrorResp struct {
+	Code ErrorCode `json:"code"`
+	Msg  string    `json:"msg"`
+}
+
+// writeJSONErrorResponse encodes err as a JSON error into w, and logs any
+// errors it encounters.  r is used to get additional information from the
+// request.
+func writeJSONErrorResponse(w http.ResponseWriter, r *http.Request, err error) {
+	log.Error("websvc: %s %s: %s", r.Method, r.URL.Path, err)
+
+	writeJSONResponse(w, r, &HTTPAPIErrorResp{
+		Code: ErrorCodeTMP000,
+		Msg:  err.Error(),
+	}, http.StatusUnprocessableEntity)
+}

internal/next/websvc/json_test.go

@@ -0,0 +1,114 @@
+package websvc_test
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/AdguardTeam/golibs/testutil"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// testJSONTime is the JSON time for tests.
+var testJSONTime = websvc.JSONTime(time.Unix(1_234_567_890, 123_456_000).UTC())
+
+// testJSONTimeStr is the string with the JSON encoding of testJSONTime.
+const testJSONTimeStr = "1234567890123.456"
+
+func TestJSONTime_MarshalJSON(t *testing.T) {
+	testCases := []struct {
+		name       string
+		wantErrMsg string
+		in         websvc.JSONTime
+		want       []byte
+	}{{
+		name:       "unix_zero",
+		wantErrMsg: "",
+		in:         websvc.JSONTime(time.Unix(0, 0)),
+		want:       []byte("0"),
+	}, {
+		name:       "empty",
+		wantErrMsg: "",
+		in:         websvc.JSONTime{},
+		want:       []byte("-6795364578871.345"),
+	}, {
+		name:       "time",
+		wantErrMsg: "",
+		in:         testJSONTime,
+		want:       []byte(testJSONTimeStr),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			got, err := tc.in.MarshalJSON()
+			testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
+
+			assert.Equal(t, tc.want, got)
+		})
+	}
+
+	t.Run("json", func(t *testing.T) {
+		in := &struct {
+			A websvc.JSONTime
+		}{
+			A: testJSONTime,
+		}
+
+		got, err := json.Marshal(in)
+		require.NoError(t, err)
+
+		assert.Equal(t, []byte(`{"A":`+testJSONTimeStr+`}`), got)
+	})
+}
+
+func TestJSONTime_UnmarshalJSON(t *testing.T) {
+	testCases := []struct {
+		name       string
+		wantErrMsg string
+		want       websvc.JSONTime
+		data       []byte
+	}{{
+		name:       "time",
+		wantErrMsg: "",
+		want:       testJSONTime,
+		data:       []byte(testJSONTimeStr),
+	}, {
+		name: "bad",
+		wantErrMsg: `parsing json time: strconv.ParseFloat: parsing "{}": ` +
+			`invalid syntax`,
+		want: websvc.JSONTime{},
+		data: []byte(`{}`),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			var got websvc.JSONTime
+			err := got.UnmarshalJSON(tc.data)
+			testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
+
+			assert.Equal(t, tc.want, got)
+		})
+	}
+
+	t.Run("nil", func(t *testing.T) {
+		err := (*websvc.JSONTime)(nil).UnmarshalJSON([]byte("0"))
+		require.Error(t, err)
+
+		msg := err.Error()
+		assert.Equal(t, "json time is nil", msg)
+	})
+
+	t.Run("json", func(t *testing.T) {
+		want := testJSONTime
+		var got struct {
+			A websvc.JSONTime
+		}
+
+		err := json.Unmarshal([]byte(`{"A":`+testJSONTimeStr+`}`), &got)
+		require.NoError(t, err)
+
+		assert.Equal(t, want, got.A)
+	})
+}

internal/next/websvc/middleware.go

@@ -0,0 +1,21 @@
+package websvc
+
+import (
+	"net/http"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
+	"github.com/AdguardTeam/golibs/httphdr"
+)
+
+// Middlewares
+
+// jsonMw sets the content type of the response to application/json.
+func jsonMw(h http.Handler) (wrapped http.HandlerFunc) {
+	f := func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set(httphdr.ContentType, aghhttp.HdrValApplicationJSON)
+
+		h.ServeHTTP(w, r)
+	}
+
+	return http.HandlerFunc(f)
+}

internal/next/websvc/path.go

@@ -0,0 +1,11 @@
+package websvc
+
+// Path constants
+const (
+	PathHealthCheck = "/health-check"
+
+	PathV1SettingsAll  = "/api/v1/settings/all"
+	PathV1SettingsDNS  = "/api/v1/settings/dns"
+	PathV1SettingsHTTP = "/api/v1/settings/http"
+	PathV1SystemInfo   = "/api/v1/system/info"
+)

internal/next/websvc/settings.go

@@ -0,0 +1,42 @@
+package websvc
+
+import (
+	"net/http"
+)
+
+// All Settings Handlers
+
+// RespGetV1SettingsAll describes the response of the GET /api/v1/settings/all
+// HTTP API.
+type RespGetV1SettingsAll struct {
+	// TODO(a.garipov): Add more as we go.
+
+	DNS  *HTTPAPIDNSSettings  `json:"dns"`
+	HTTP *HTTPAPIHTTPSettings `json:"http"`
+}
+
+// handleGetSettingsAll is the handler for the GET /api/v1/settings/all HTTP
+// API.
+func (svc *Service) handleGetSettingsAll(w http.ResponseWriter, r *http.Request) {
+	dnsSvc := svc.confMgr.DNS()
+	dnsConf := dnsSvc.Config()
+
+	webSvc := svc.confMgr.Web()
+	httpConf := webSvc.Config()
+
+	// TODO(a.garipov): Add all currently supported parameters.
+	writeJSONOKResponse(w, r, &RespGetV1SettingsAll{
+		DNS: &HTTPAPIDNSSettings{
+			Addresses:        dnsConf.Addresses,
+			BootstrapServers: dnsConf.BootstrapServers,
+			UpstreamServers:  dnsConf.UpstreamServers,
+			UpstreamTimeout:  JSONDuration(dnsConf.UpstreamTimeout),
+		},
+		HTTP: &HTTPAPIHTTPSettings{
+			Addresses:       httpConf.Addresses,
+			SecureAddresses: httpConf.SecureAddresses,
+			Timeout:         JSONDuration(httpConf.Timeout),
+			ForceHTTPS:      httpConf.ForceHTTPS,
+		},
+	})
+}

internal/next/websvc/settings_test.go

@@ -0,0 +1,75 @@
+package websvc_test
+
+import (
+	"crypto/tls"
+	"encoding/json"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestService_HandleGetSettingsAll(t *testing.T) {
+	// TODO(a.garipov): Add all currently supported parameters.
+
+	wantDNS := &websvc.HTTPAPIDNSSettings{
+		Addresses:        []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:53")},
+		BootstrapServers: []string{"94.140.14.140", "94.140.14.141"},
+		UpstreamServers:  []string{"94.140.14.14", "1.1.1.1"},
+		UpstreamTimeout:  websvc.JSONDuration(1 * time.Second),
+	}
+
+	wantWeb := &websvc.HTTPAPIHTTPSettings{
+		Addresses:       []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:80")},
+		SecureAddresses: []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:443")},
+		Timeout:         websvc.JSONDuration(5 * time.Second),
+		ForceHTTPS:      true,
+	}
+
+	confMgr := newConfigManager()
+	confMgr.onDNS = func() (s agh.ServiceWithConfig[*dnssvc.Config]) {
+		c, err := dnssvc.New(&dnssvc.Config{
+			Addresses:        wantDNS.Addresses,
+			UpstreamServers:  wantDNS.UpstreamServers,
+			BootstrapServers: wantDNS.BootstrapServers,
+			UpstreamTimeout:  time.Duration(wantDNS.UpstreamTimeout),
+		})
+		require.NoError(t, err)
+
+		return c
+	}
+
+	confMgr.onWeb = func() (s agh.ServiceWithConfig[*websvc.Config]) {
+		return websvc.New(&websvc.Config{
+			TLS: &tls.Config{
+				Certificates: []tls.Certificate{{}},
+			},
+			Addresses:       wantWeb.Addresses,
+			SecureAddresses: wantWeb.SecureAddresses,
+			Timeout:         time.Duration(wantWeb.Timeout),
+			ForceHTTPS:      true,
+		})
+	}
+
+	_, addr := newTestServer(t, confMgr)
+	u := &url.URL{
+		Scheme: "http",
+		Host:   addr.String(),
+		Path:   websvc.PathV1SettingsAll,
+	}
+
+	body := httpGet(t, u, http.StatusOK)
+	resp := &websvc.RespGetV1SettingsAll{}
+	err := json.Unmarshal(body, resp)
+	require.NoError(t, err)
+
+	assert.Equal(t, wantDNS, resp.DNS)
+	assert.Equal(t, wantWeb, resp.HTTP)
+}

internal/next/websvc/system.go

@@ -0,0 +1,35 @@
+package websvc
+
+import (
+	"net/http"
+	"runtime"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/version"
+)
+
+// System Handlers
+
+// RespGetV1SystemInfo describes the response of the GET /api/v1/system/info
+// HTTP API.
+type RespGetV1SystemInfo struct {
+	Arch       string   `json:"arch"`
+	Channel    string   `json:"channel"`
+	OS         string   `json:"os"`
+	NewVersion string   `json:"new_version,omitempty"`
+	Start      JSONTime `json:"start"`
+	Version    string   `json:"version"`
+}
+
+// handleGetV1SystemInfo is the handler for the GET /api/v1/system/info HTTP
+// API.
+func (svc *Service) handleGetV1SystemInfo(w http.ResponseWriter, r *http.Request) {
+	writeJSONOKResponse(w, r, &RespGetV1SystemInfo{
+		Arch:    runtime.GOARCH,
+		Channel: version.Channel(),
+		OS:      runtime.GOOS,
+		// TODO(a.garipov): Fill this when we have an updater.
+		NewVersion: "",
+		Start:      JSONTime(svc.start),
+		Version:    version.Version(),
+	})
+}

internal/next/websvc/system_test.go

@@ -0,0 +1,37 @@
+package websvc_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/url"
+	"runtime"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestService_handleGetV1SystemInfo(t *testing.T) {
+	confMgr := newConfigManager()
+	_, addr := newTestServer(t, confMgr)
+	u := &url.URL{
+		Scheme: "http",
+		Host:   addr.String(),
+		Path:   websvc.PathV1SystemInfo,
+	}
+
+	body := httpGet(t, u, http.StatusOK)
+	resp := &websvc.RespGetV1SystemInfo{}
+	err := json.Unmarshal(body, resp)
+	require.NoError(t, err)
+
+	// TODO(a.garipov): Consider making version.Channel and version.Version
+	// testable and test these better.
+	assert.NotEmpty(t, resp.Channel)
+
+	assert.Equal(t, resp.Arch, runtime.GOARCH)
+	assert.Equal(t, resp.OS, runtime.GOOS)
+	assert.Equal(t, testStart, time.Time(resp.Start))
+}

internal/next/websvc/waitlistener.go

@@ -0,0 +1,31 @@
+package websvc
+
+import (
+	"net"
+	"sync"
+)
+
+// Wait Listener
+
+// waitListener is a wrapper around a listener that also calls wg.Done() on the
+// first call to Accept.  It is useful in situations where it is important to
+// catch the precise moment of the first call to Accept, for example when
+// starting an HTTP server.
+//
+// TODO(a.garipov): Move to aghnet?
+type waitListener struct {
+	net.Listener
+
+	firstAcceptWG   *sync.WaitGroup
+	firstAcceptOnce sync.Once
+}
+
+// type check
+var _ net.Listener = (*waitListener)(nil)
+
+// Accept implements the [net.Listener] interface for *waitListener.
+func (l *waitListener) Accept() (conn net.Conn, err error) {
+	l.firstAcceptOnce.Do(l.firstAcceptWG.Done)
+
+	return l.Listener.Accept()
+}

internal/next/websvc/waitlistener_internal_test.go

@@ -0,0 +1,45 @@
+package websvc
+
+import (
+	"net"
+	"sync"
+	"sync/atomic"
+	"testing"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghchan"
+	"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWaitListener_Accept(t *testing.T) {
+	var accepted atomic.Bool
+	var l net.Listener = &aghtest.Listener{
+		OnAccept: func() (conn net.Conn, err error) {
+			accepted.Store(true)
+
+			return nil, nil
+		},
+		OnAddr:  func() (addr net.Addr) { panic("not implemented") },
+		OnClose: func() (err error) { panic("not implemented") },
+	}
+
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+
+	done := make(chan struct{})
+	go aghchan.MustReceive(done, testTimeout)
+
+	go func() {
+		var wrapper net.Listener = &waitListener{
+			Listener:      l,
+			firstAcceptWG: wg,
+		}
+
+		_, _ = wrapper.Accept()
+	}()
+
+	wg.Wait()
+	close(done)
+
+	assert.True(t, accepted.Load())
+}

internal/next/websvc/websvc.go

@@ -0,0 +1,305 @@
+// Package websvc contains the AdGuard Home HTTP API service.
+//
+// NOTE: Packages other than cmd must not import this package, as it imports
+// most other packages.
+//
+// TODO(a.garipov): Add tests.
+package websvc
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/netip"
+	"sync"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/golibs/errors"
+	"github.com/AdguardTeam/golibs/log"
+	httptreemux "github.com/dimfeld/httptreemux/v5"
+)
+
+// ConfigManager is the configuration manager interface.
+type ConfigManager interface {
+	DNS() (svc agh.ServiceWithConfig[*dnssvc.Config])
+	Web() (svc agh.ServiceWithConfig[*Config])
+
+	UpdateDNS(ctx context.Context, c *dnssvc.Config) (err error)
+	UpdateWeb(ctx context.Context, c *Config) (err error)
+}
+
+// Config is the AdGuard Home web service configuration structure.
+type Config struct {
+	// ConfigManager is used to show information about services as well as
+	// dynamically reconfigure them.
+	ConfigManager ConfigManager
+
+	// TLS is the optional TLS configuration.  If TLS is not nil,
+	// SecureAddresses must not be empty.
+	TLS *tls.Config
+
+	// Start is the time of start of AdGuard Home.
+	Start time.Time
+
+	// Addresses are the addresses on which to serve the plain HTTP API.
+	Addresses []netip.AddrPort
+
+	// SecureAddresses are the addresses on which to serve the HTTPS API.  If
+	// SecureAddresses is not empty, TLS must not be nil.
+	SecureAddresses []netip.AddrPort
+
+	// Timeout is the timeout for all server operations.
+	Timeout time.Duration
+
+	// ForceHTTPS tells if all requests to Addresses should be redirected to a
+	// secure address instead.
+	//
+	// TODO(a.garipov): Use; define rules, which address to redirect to.
+	ForceHTTPS bool
+}
+
+// Service is the AdGuard Home web service.  A nil *Service is a valid
+// [agh.Service] that does nothing.
+type Service struct {
+	confMgr    ConfigManager
+	tls        *tls.Config
+	start      time.Time
+	servers    []*http.Server
+	timeout    time.Duration
+	forceHTTPS bool
+}
+
+// New returns a new properly initialized *Service.  If c is nil, svc is a nil
+// *Service that does nothing.  The fields of c must not be modified after
+// calling New.
+func New(c *Config) (svc *Service) {
+	if c == nil {
+		return nil
+	}
+
+	svc = &Service{
+		confMgr:    c.ConfigManager,
+		tls:        c.TLS,
+		start:      c.Start,
+		timeout:    c.Timeout,
+		forceHTTPS: c.ForceHTTPS,
+	}
+
+	mux := newMux(svc)
+
+	for _, a := range c.Addresses {
+		addr := a.String()
+		errLog := log.StdLog("websvc: plain http: "+addr, log.ERROR)
+		svc.servers = append(svc.servers, &http.Server{
+			Addr:              addr,
+			Handler:           mux,
+			ErrorLog:          errLog,
+			ReadTimeout:       c.Timeout,
+			WriteTimeout:      c.Timeout,
+			IdleTimeout:       c.Timeout,
+			ReadHeaderTimeout: c.Timeout,
+		})
+	}
+
+	for _, a := range c.SecureAddresses {
+		addr := a.String()
+		errLog := log.StdLog("websvc: https: "+addr, log.ERROR)
+		svc.servers = append(svc.servers, &http.Server{
+			Addr:              addr,
+			Handler:           mux,
+			TLSConfig:         c.TLS,
+			ErrorLog:          errLog,
+			ReadTimeout:       c.Timeout,
+			WriteTimeout:      c.Timeout,
+			IdleTimeout:       c.Timeout,
+			ReadHeaderTimeout: c.Timeout,
+		})
+	}
+
+	return svc
+}
+
+// newMux returns a new HTTP request multiplexor for the AdGuard Home web
+// service.
+func newMux(svc *Service) (mux *httptreemux.ContextMux) {
+	mux = httptreemux.NewContextMux()
+
+	routes := []struct {
+		handler http.HandlerFunc
+		method  string
+		path    string
+		isJSON  bool
+	}{{
+		handler: svc.handleGetHealthCheck,
+		method:  http.MethodGet,
+		path:    PathHealthCheck,
+		isJSON:  false,
+	}, {
+		handler: svc.handleGetSettingsAll,
+		method:  http.MethodGet,
+		path:    PathV1SettingsAll,
+		isJSON:  true,
+	}, {
+		handler: svc.handlePatchSettingsDNS,
+		method:  http.MethodPatch,
+		path:    PathV1SettingsDNS,
+		isJSON:  true,
+	}, {
+		handler: svc.handlePatchSettingsHTTP,
+		method:  http.MethodPatch,
+		path:    PathV1SettingsHTTP,
+		isJSON:  true,
+	}, {
+		handler: svc.handleGetV1SystemInfo,
+		method:  http.MethodGet,
+		path:    PathV1SystemInfo,
+		isJSON:  true,
+	}}
+
+	for _, r := range routes {
+		if r.isJSON {
+			mux.Handle(r.method, r.path, jsonMw(r.handler))
+		} else {
+			mux.Handle(r.method, r.path, r.handler)
+		}
+	}
+
+	return mux
+}
+
+// addrs returns all addresses on which this server serves the HTTP API.  addrs
+// must not be called simultaneously with Start.  If svc was initialized with
+// ":0" addresses, addrs will not return the actual bound ports until Start is
+// finished.
+func (svc *Service) addrs() (addrs, secureAddrs []netip.AddrPort) {
+	for _, srv := range svc.servers {
+		addrPort, err := netip.ParseAddrPort(srv.Addr)
+		if err != nil {
+			// Technically shouldn't happen, since all servers must have a valid
+			// address.
+			panic(fmt.Errorf("websvc: server %q: bad address: %w", srv.Addr, err))
+		}
+
+		// srv.Serve will set TLSConfig to an almost empty value, so, instead of
+		// relying only on the nilness of TLSConfig, check the length of the
+		// certificates field as well.
+		if srv.TLSConfig == nil || len(srv.TLSConfig.Certificates) == 0 {
+			addrs = append(addrs, addrPort)
+		} else {
+			secureAddrs = append(secureAddrs, addrPort)
+		}
+
+	}
+
+	return addrs, secureAddrs
+}
+
+// handleGetHealthCheck is the handler for the GET /health-check HTTP API.
+func (svc *Service) handleGetHealthCheck(w http.ResponseWriter, _ *http.Request) {
+	_, _ = io.WriteString(w, "OK")
+}
+
+// type check
+var _ agh.Service = (*Service)(nil)
+
+// Start implements the [agh.Service] interface for *Service.  svc may be nil.
+// After Start exits, all HTTP servers have tried to start, possibly failing and
+// writing error messages to the log.
+func (svc *Service) Start() (err error) {
+	if svc == nil {
+		return nil
+	}
+
+	wg := &sync.WaitGroup{}
+	wg.Add(len(svc.servers))
+	for _, srv := range svc.servers {
+		go serve(srv, wg)
+	}
+
+	wg.Wait()
+
+	return nil
+}
+
+// serve starts and runs srv and writes all errors into its log.
+func serve(srv *http.Server, wg *sync.WaitGroup) {
+	addr := srv.Addr
+	defer log.OnPanic(addr)
+
+	var proto string
+	var l net.Listener
+	var err error
+	if srv.TLSConfig == nil {
+		proto = "http"
+		l, err = net.Listen("tcp", addr)
+	} else {
+		proto = "https"
+		l, err = tls.Listen("tcp", addr, srv.TLSConfig)
+	}
+	if err != nil {
+		srv.ErrorLog.Printf("starting srv %s: binding: %s", addr, err)
+	}
+
+	// Update the server's address in case the address had the port zero, which
+	// would mean that a random available port was automatically chosen.
+	srv.Addr = l.Addr().String()
+
+	log.Info("websvc: starting srv %s://%s", proto, srv.Addr)
+
+	l = &waitListener{
+		Listener:      l,
+		firstAcceptWG: wg,
+	}
+
+	err = srv.Serve(l)
+	if err != nil && !errors.Is(err, http.ErrServerClosed) {
+		srv.ErrorLog.Printf("starting srv %s: %s", addr, err)
+	}
+}
+
+// Shutdown implements the [agh.Service] interface for *Service.  svc may be
+// nil.
+func (svc *Service) Shutdown(ctx context.Context) (err error) {
+	if svc == nil {
+		return nil
+	}
+
+	var errs []error
+	for _, srv := range svc.servers {
+		serr := srv.Shutdown(ctx)
+		if serr != nil {
+			errs = append(errs, fmt.Errorf("shutting down srv %s: %w", srv.Addr, serr))
+		}
+	}
+
+	if len(errs) > 0 {
+		return errors.List("shutting down", errs...)
+	}
+
+	return nil
+}
+
+// Config returns the current configuration of the web service.  Config must not
+// be called simultaneously with Start.  If svc was initialized with ":0"
+// addresses, addrs will not return the actual bound ports until Start is
+// finished.
+func (svc *Service) Config() (c *Config) {
+	c = &Config{
+		ConfigManager: svc.confMgr,
+		TLS:           svc.tls,
+		// Leave Addresses and SecureAddresses empty and get the actual
+		// addresses that include the :0 ones later.
+		Start:      svc.start,
+		Timeout:    svc.timeout,
+		ForceHTTPS: svc.forceHTTPS,
+	}
+
+	c.Addresses, c.SecureAddresses = svc.addrs()
+
+	return c
+}

internal/next/websvc/websvc_internal_test.go

@@ -0,0 +1,6 @@
+package websvc
+
+import "time"
+
+// testTimeout is the common timeout for tests.
+const testTimeout = 1 * time.Second

internal/next/websvc/websvc_test.go

@@ -0,0 +1,187 @@
+package websvc_test
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"testing"
+	"time"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/dnssvc"
+	"github.com/AdguardTeam/AdGuardHome/internal/next/websvc"
+	"github.com/AdguardTeam/golibs/testutil"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMain(m *testing.M) {
+	testutil.DiscardLogOutput(m)
+}
+
+// testTimeout is the common timeout for tests.
+const testTimeout = 1 * time.Second
+
+// testStart is the server start value for tests.
+var testStart = time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC)
+
+// type check
+var _ websvc.ConfigManager = (*configManager)(nil)
+
+// configManager is a [websvc.ConfigManager] for tests.
+type configManager struct {
+	onDNS func() (svc agh.ServiceWithConfig[*dnssvc.Config])
+	onWeb func() (svc agh.ServiceWithConfig[*websvc.Config])
+
+	onUpdateDNS func(ctx context.Context, c *dnssvc.Config) (err error)
+	onUpdateWeb func(ctx context.Context, c *websvc.Config) (err error)
+}
+
+// DNS implements the [websvc.ConfigManager] interface for *configManager.
+func (m *configManager) DNS() (svc agh.ServiceWithConfig[*dnssvc.Config]) {
+	return m.onDNS()
+}
+
+// Web implements the [websvc.ConfigManager] interface for *configManager.
+func (m *configManager) Web() (svc agh.ServiceWithConfig[*websvc.Config]) {
+	return m.onWeb()
+}
+
+// UpdateDNS implements the [websvc.ConfigManager] interface for *configManager.
+func (m *configManager) UpdateDNS(ctx context.Context, c *dnssvc.Config) (err error) {
+	return m.onUpdateDNS(ctx, c)
+}
+
+// UpdateWeb implements the [websvc.ConfigManager] interface for *configManager.
+func (m *configManager) UpdateWeb(ctx context.Context, c *websvc.Config) (err error) {
+	return m.onUpdateWeb(ctx, c)
+}
+
+// newConfigManager returns a *configManager all methods of which panic.
+func newConfigManager() (m *configManager) {
+	return &configManager{
+		onDNS: func() (svc agh.ServiceWithConfig[*dnssvc.Config]) { panic("not implemented") },
+		onWeb: func() (svc agh.ServiceWithConfig[*websvc.Config]) { panic("not implemented") },
+		onUpdateDNS: func(_ context.Context, _ *dnssvc.Config) (err error) {
+			panic("not implemented")
+		},
+		onUpdateWeb: func(_ context.Context, _ *websvc.Config) (err error) {
+			panic("not implemented")
+		},
+	}
+}
+
+// newTestServer creates and starts a new web service instance as well as its
+// sole address.  It also registers a cleanup procedure, which shuts the
+// instance down.
+//
+// TODO(a.garipov): Use svc or remove it.
+func newTestServer(
+	t testing.TB,
+	confMgr websvc.ConfigManager,
+) (svc *websvc.Service, addr netip.AddrPort) {
+	t.Helper()
+
+	c := &websvc.Config{
+		ConfigManager:   confMgr,
+		TLS:             nil,
+		Addresses:       []netip.AddrPort{netip.MustParseAddrPort("127.0.0.1:0")},
+		SecureAddresses: nil,
+		Timeout:         testTimeout,
+		Start:           testStart,
+		ForceHTTPS:      false,
+	}
+
+	svc = websvc.New(c)
+
+	err := svc.Start()
+	require.NoError(t, err)
+	t.Cleanup(func() {
+		ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
+		t.Cleanup(cancel)
+
+		err = svc.Shutdown(ctx)
+		require.NoError(t, err)
+	})
+
+	c = svc.Config()
+	require.NotNil(t, c)
+	require.Len(t, c.Addresses, 1)
+
+	return svc, c.Addresses[0]
+}
+
+// jobj is a utility alias for JSON objects.
+type jobj map[string]any
+
+// httpGet is a helper that performs an HTTP GET request and returns the body of
+// the response as well as checks that the status code is correct.
+//
+// TODO(a.garipov): Add helpers for other methods.
+func httpGet(t testing.TB, u *url.URL, wantCode int) (body []byte) {
+	t.Helper()
+
+	req, err := http.NewRequest(http.MethodGet, u.String(), nil)
+	require.NoErrorf(t, err, "creating req")
+
+	httpCli := &http.Client{
+		Timeout: testTimeout,
+	}
+	resp, err := httpCli.Do(req)
+	require.NoErrorf(t, err, "performing req")
+	require.Equal(t, wantCode, resp.StatusCode)
+
+	testutil.CleanupAndRequireSuccess(t, resp.Body.Close)
+
+	body, err = io.ReadAll(resp.Body)
+	require.NoErrorf(t, err, "reading body")
+
+	return body
+}
+
+// httpPatch is a helper that performs an HTTP PATCH request with JSON-encoded
+// reqBody as the request body and returns the body of the response as well as
+// checks that the status code is correct.
+//
+// TODO(a.garipov): Add helpers for other methods.
+func httpPatch(t testing.TB, u *url.URL, reqBody any, wantCode int) (body []byte) {
+	t.Helper()
+
+	b, err := json.Marshal(reqBody)
+	require.NoErrorf(t, err, "marshaling reqBody")
+
+	req, err := http.NewRequest(http.MethodPatch, u.String(), bytes.NewReader(b))
+	require.NoErrorf(t, err, "creating req")
+
+	httpCli := &http.Client{
+		Timeout: testTimeout,
+	}
+	resp, err := httpCli.Do(req)
+	require.NoErrorf(t, err, "performing req")
+	require.Equal(t, wantCode, resp.StatusCode)
+
+	testutil.CleanupAndRequireSuccess(t, resp.Body.Close)
+
+	body, err = io.ReadAll(resp.Body)
+	require.NoErrorf(t, err, "reading body")
+
+	return body
+}
+
+func TestService_Start_getHealthCheck(t *testing.T) {
+	confMgr := newConfigManager()
+	_, addr := newTestServer(t, confMgr)
+	u := &url.URL{
+		Scheme: "http",
+		Host:   addr.String(),
+		Path:   websvc.PathHealthCheck,
+	}
+
+	body := httpGet(t, u, http.StatusOK)
+
+	assert.Equal(t, []byte("OK"), body)
+}

internal/querylog/decode.go

@@ -3,24 +3,19 @@ package querylog
 import (
 	"encoding/base64"
 	"encoding/json"
-	"fmt"
 	"io"
 	"net"
 	"strings"
 	"time"
 
 	"github.com/AdguardTeam/AdGuardHome/internal/filtering"
-	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"github.com/AdguardTeam/urlfilter/rules"
 	"github.com/miekg/dns"
 )
 
-// logEntryHandler represents a handler for decoding json token to the logEntry
-// struct.
 type logEntryHandler func(t json.Token, ent *logEntry) error
 
-// logEntryHandlers is the map of log entry decode handlers for various keys.
 var logEntryHandlers = map[string]logEntryHandler{
 	"CID": func(t json.Token, ent *logEntry) error {
 		v, ok := t.(string)
@@ -171,7 +166,6 @@ var logEntryHandlers = map[string]logEntryHandler{
 	},
 }
 
-// decodeResultRuleKey decodes the token of "Rules" type to logEntry struct.
 func decodeResultRuleKey(key string, i int, dec *json.Decoder, ent *logEntry) {
 	var vToken json.Token
 	switch key {
@@ -195,8 +189,6 @@ func decodeResultRuleKey(key string, i int, dec *json.Decoder, ent *logEntry) {
 	}
 }
 
-// decodeVTokenAndAddRule decodes the "Rules" toke as [filtering.ResultRule]
-// and then adds the decoded object to the slice of result rules.
 func decodeVTokenAndAddRule(
 	key string,
 	i int,
@@ -221,8 +213,6 @@ func decodeVTokenAndAddRule(
 	return newRules, vToken
 }
 
-// decodeResultRules parses the dec's tokens into logEntry ent interpreting it
-// as a slice of the result rules.
 func decodeResultRules(dec *json.Decoder, ent *logEntry) {
 	for {
 		delimToken, err := dec.Token()
@@ -234,53 +224,48 @@ func decodeResultRules(dec *json.Decoder, ent *logEntry) {
 			return
 		}
 
-		if d, ok := delimToken.(json.Delim); !ok {
-			return
-		} else if d != '[' {
-			log.Debug("decodeResultRules: unexpected delim %q", d)
-		}
-
-		err = decodeResultRuleToken(dec, ent)
-		if err != nil {
-			if err != io.EOF && !errors.Is(err, ErrEndOfToken) {
-				log.Debug("decodeResultRules err: %s", err)
+		if d, ok := delimToken.(json.Delim); ok {
+			if d != '[' {
+				log.Debug("decodeResultRules: unexpected delim %q", d)
 			}
-
+		} else {
 			return
 		}
-	}
-}
 
-// decodeResultRuleToken decodes the tokens of "Rules" type to the logEntry ent.
-func decodeResultRuleToken(dec *json.Decoder, ent *logEntry) (err error) {
-	i := 0
-	for {
-		var keyToken json.Token
-		keyToken, err = dec.Token()
-		if err != nil {
-			// Don't wrap the error, because it's informative enough as is.
-			return err
-		}
+		i := 0
+		for {
+			var keyToken json.Token
+			keyToken, err = dec.Token()
+			if err != nil {
+				if err != io.EOF {
+					log.Debug("decodeResultRules err: %s", err)
+				}
 
-		if d, ok := keyToken.(json.Delim); ok {
-			switch d {
-			case '}':
-				i++
-			case ']':
-				return ErrEndOfToken
-			default:
-				// Go on.
+				return
 			}
 
-			continue
-		}
+			if d, ok := keyToken.(json.Delim); ok {
+				switch d {
+				case '}':
+					i++
+				case ']':
+					return
+				default:
+					// Go on.
+				}
 
-		key, ok := keyToken.(string)
-		if !ok {
-			return fmt.Errorf("keyToken is %T (%[1]v) and not string", keyToken)
-		}
+				continue
+			}
 
-		decodeResultRuleKey(key, i, dec, ent)
+			key, ok := keyToken.(string)
+			if !ok {
+				log.Debug("decodeResultRules: keyToken is %T (%[1]v) and not string", keyToken)
+
+				return
+			}
+
+			decodeResultRuleKey(key, i, dec, ent)
+		}
 	}
 }
 
@@ -337,8 +322,6 @@ func decodeResultReverseHosts(dec *json.Decoder, ent *logEntry) {
 	}
 }
 
-// decodeResultIPList parses the dec's tokens into logEntry ent interpreting it
-// as the result IP addresses list.
 func decodeResultIPList(dec *json.Decoder, ent *logEntry) {
 	for {
 		itemToken, err := dec.Token()
@@ -372,8 +355,6 @@ func decodeResultIPList(dec *json.Decoder, ent *logEntry) {
 	}
 }
 
-// decodeResultDNSRewriteResultKey decodes the token of "DNSRewriteResult" type
-// to the logEntry struct.
 func decodeResultDNSRewriteResultKey(key string, dec *json.Decoder, ent *logEntry) {
 	var err error
 
@@ -414,29 +395,50 @@ func decodeResultDNSRewriteResultKey(key string, dec *json.Decoder, ent *logEntr
 			log.Debug("decodeResultDNSRewriteResultKey response err: %s", err)
 		}
 
-		ent.parseDNSRewriteResultIPs()
+		for rrType, rrValues := range ent.Result.DNSRewriteResult.Response {
+			switch rrType {
+			case
+				dns.TypeA,
+				dns.TypeAAAA:
+				for i, v := range rrValues {
+					s, _ := v.(string)
+					rrValues[i] = net.ParseIP(s)
+				}
+			default:
+				// Go on.
+			}
+		}
 	default:
 		// Go on.
 	}
 }
 
-// decodeResultDNSRewriteResult parses the dec's tokens into logEntry ent
-// interpreting it as the result DNSRewriteResult.
 func decodeResultDNSRewriteResult(dec *json.Decoder, ent *logEntry) {
 	for {
-		key, err := parseKeyToken(dec)
+		keyToken, err := dec.Token()
 		if err != nil {
-			if err != io.EOF && !errors.Is(err, ErrEndOfToken) {
-				log.Debug("decodeResultDNSRewriteResult: %s", err)
+			if err != io.EOF {
+				log.Debug("decodeResultDNSRewriteResult err: %s", err)
 			}
 
 			return
 		}
 
-		if key == "" {
+		if d, ok := keyToken.(json.Delim); ok {
+			if d == '}' {
+				return
+			}
+
 			continue
 		}
 
+		key, ok := keyToken.(string)
+		if !ok {
+			log.Debug("decodeResultDNSRewriteResult: keyToken is %T (%[1]v) and not string", keyToken)
+
+			return
+		}
+
 		decodeResultDNSRewriteResultKey(key, dec, ent)
 	}
 }
@@ -472,51 +474,34 @@ func translateResult(ent *logEntry) {
 	res.IPList = nil
 }
 
-// ErrEndOfToken is an error returned by parse key token when the closing
-// bracket is found.
-const ErrEndOfToken errors.Error = "end of token"
-
-// parseKeyToken parses the dec's token key.
-func parseKeyToken(dec *json.Decoder) (key string, err error) {
-	keyToken, err := dec.Token()
-	if err != nil {
-		return "", err
-	}
-
-	if d, ok := keyToken.(json.Delim); ok {
-		if d == '}' {
-			return "", ErrEndOfToken
-		}
-
-		return "", nil
-	}
-
-	key, ok := keyToken.(string)
-	if !ok {
-		return "", fmt.Errorf("keyToken is %T (%[1]v) and not string", keyToken)
-	}
-
-	return key, nil
-}
-
-// decodeResult decodes a token of "Result" type to logEntry struct.
 func decodeResult(dec *json.Decoder, ent *logEntry) {
 	defer translateResult(ent)
 
 	for {
-		key, err := parseKeyToken(dec)
+		keyToken, err := dec.Token()
 		if err != nil {
-			if err != io.EOF && !errors.Is(err, ErrEndOfToken) {
-				log.Debug("decodeResult: %s", err)
+			if err != io.EOF {
+				log.Debug("decodeResult err: %s", err)
 			}
 
 			return
 		}
 
-		if key == "" {
+		if d, ok := keyToken.(json.Delim); ok {
+			if d == '}' {
+				return
+			}
+
 			continue
 		}
 
+		key, ok := keyToken.(string)
+		if !ok {
+			log.Debug("decodeResult: keyToken is %T (%[1]v) and not string", keyToken)
+
+			return
+		}
+
 		decHandler, ok := resultDecHandlers[key]
 		if ok {
 			decHandler(dec, ent)
@@ -542,16 +527,13 @@ func decodeResult(dec *json.Decoder, ent *logEntry) {
 	}
 }
 
-// resultHandlers is the map of log entry decode handlers for various keys.
 var resultHandlers = map[string]logEntryHandler{
 	"IsFiltered": func(t json.Token, ent *logEntry) error {
 		v, ok := t.(bool)
 		if !ok {
 			return nil
 		}
-
 		ent.Result.IsFiltered = v
-
 		return nil
 	},
 	"Rule": func(t json.Token, ent *logEntry) error {
@@ -596,14 +578,11 @@ var resultHandlers = map[string]logEntryHandler{
 		if !ok {
 			return nil
 		}
-
 		i, err := v.Int64()
 		if err != nil {
 			return err
 		}
-
 		ent.Result.Reason = filtering.Reason(i)
-
 		return nil
 	},
 	"ServiceName": func(t json.Token, ent *logEntry) error {
@@ -628,7 +607,6 @@ var resultHandlers = map[string]logEntryHandler{
 	},
 }
 
-// resultDecHandlers is the map of decode handlers for various keys.
 var resultDecHandlers = map[string]func(dec *json.Decoder, ent *logEntry){
 	"ReverseHosts":     decodeResultReverseHosts,
 	"IPList":           decodeResultIPList,
@@ -636,11 +614,9 @@ var resultDecHandlers = map[string]func(dec *json.Decoder, ent *logEntry){
 	"DNSRewriteResult": decodeResultDNSRewriteResult,
 }
 
-// decodeLogEntry decodes string str to logEntry ent.
 func decodeLogEntry(ent *logEntry, str string) {
 	dec := json.NewDecoder(strings.NewReader(str))
 	dec.UseNumber()
-
 	for {
 		keyToken, err := dec.Token()
 		if err != nil {

internal/querylog/entry.go

@@ -68,19 +68,3 @@ func (e *logEntry) addResponse(resp *dns.Msg, isOrig bool) {
 		log.Error("querylog: %s", err)
 	}
 }
-
-// parseDNSRewriteResultIPs fills logEntry's DNSRewriteResult response records
-// with the IP addresses parsed from the raw strings.
-func (e *logEntry) parseDNSRewriteResultIPs() {
-	for rrType, rrValues := range e.Result.DNSRewriteResult.Response {
-		switch rrType {
-		case dns.TypeA, dns.TypeAAAA:
-			for i, v := range rrValues {
-				s, _ := v.(string)
-				rrValues[i] = net.ParseIP(s)
-			}
-		default:
-			// Go on.
-		}
-	}
-}

internal/querylog/qlog.go

@@ -16,35 +16,32 @@ import (
 	"github.com/miekg/dns"
 )
 
-// queryLogFileName is a name of the log file.  ".gz" extension is added later
-// during compression.
-const queryLogFileName = "querylog.json"
+const (
+	queryLogFileName = "querylog.json" // .gz added during compression
+)
 
-// queryLog is a structure that writes and reads the DNS query log.
+// queryLog is a structure that writes and reads the DNS query log
 type queryLog struct {
+	findClient func(ids []string) (c *Client, err error)
+
 	// confMu protects conf.
 	confMu *sync.RWMutex
-
-	conf       *Config
-	anonymizer *aghnet.IPMut
-
-	findClient func(ids []string) (c *Client, err error)
+	conf   *Config
 
 	// logFile is the path to the log file.
 	logFile string
 
+	// bufferLock protects buffer.
+	bufferLock sync.RWMutex
 	// buffer contains recent log entries.  The entries in this buffer must not
 	// be modified.
 	buffer []*logEntry
 
-	// bufferLock protects buffer.
-	bufferLock sync.RWMutex
-
-	// fileFlushLock synchronizes a file-flushing goroutine and main thread.
-	fileFlushLock sync.Mutex
+	fileFlushLock sync.Mutex // synchronize a file-flushing goroutine and main thread
+	flushPending  bool       // don't start another goroutine while the previous one is still running
 	fileWriteLock sync.Mutex
 
-	flushPending bool
+	anonymizer *aghnet.IPMut
 }
 
 // ClientProto values are names of the client protocols.
@@ -158,43 +155,6 @@ func (l *queryLog) clear() {
 	log.Debug("querylog: cleared")
 }
 
-// newLogEntry creates an instance of logEntry from parameters.
-func newLogEntry(params *AddParams) (entry *logEntry) {
-	q := params.Question.Question[0]
-
-	entry = &logEntry{
-		// TODO(d.kolyshev): Export this timestamp to func params.
-		Time: time.Now(),
-
-		QHost:  strings.ToLower(q.Name[:len(q.Name)-1]),
-		QType:  dns.Type(q.Qtype).String(),
-		QClass: dns.Class(q.Qclass).String(),
-
-		ClientID:    params.ClientID,
-		ClientProto: params.ClientProto,
-
-		Result:   *params.Result,
-		Upstream: params.Upstream,
-
-		IP: params.ClientIP,
-
-		Elapsed: params.Elapsed,
-
-		Cached:            params.Cached,
-		AuthenticatedData: params.AuthenticatedData,
-	}
-
-	if params.ReqECS != nil {
-		entry.ReqECS = params.ReqECS.String()
-	}
-
-	entry.addResponse(params.Answer, false)
-	entry.addResponse(params.OrigAnswer, true)
-
-	return entry
-}
-
-// Add implements the [QueryLog] interface for *queryLog.
 func (l *queryLog) Add(params *AddParams) {
 	var isEnabled, fileIsEnabled bool
 	var memSize uint32
@@ -221,7 +181,35 @@ func (l *queryLog) Add(params *AddParams) {
 		params.Result = &filtering.Result{}
 	}
 
-	entry := newLogEntry(params)
+	now := time.Now()
+	q := params.Question.Question[0]
+	entry := &logEntry{
+		Time: now,
+
+		QHost:  strings.ToLower(q.Name[:len(q.Name)-1]),
+		QType:  dns.Type(q.Qtype).String(),
+		QClass: dns.Class(q.Qclass).String(),
+
+		ClientID:    params.ClientID,
+		ClientProto: params.ClientProto,
+
+		Result:   *params.Result,
+		Upstream: params.Upstream,
+
+		IP: params.ClientIP,
+
+		Elapsed: params.Elapsed,
+
+		Cached:            params.Cached,
+		AuthenticatedData: params.AuthenticatedData,
+	}
+
+	if params.ReqECS != nil {
+		entry.ReqECS = params.ReqECS.String()
+	}
+
+	entry.addResponse(params.Answer, false)
+	entry.addResponse(params.OrigAnswer, true)
 
 	needFlush := false
 	func() {

internal/querylog/qlog_test.go

@@ -45,10 +45,9 @@ func TestQueryLog(t *testing.T) {
 	addEntry(l, "example.com", net.IPv4(1, 1, 1, 4), net.IPv4(2, 2, 2, 4))
 
 	type tcAssertion struct {
-		host   string
-		answer net.IP
-		client net.IP
-		num    int
+		num            int
+		host           string
+		answer, client net.IP
 	}
 
 	testCases := []struct {

internal/querylog/qlogfile.go

@@ -12,181 +12,141 @@ import (
 	"github.com/AdguardTeam/golibs/log"
 )
 
+// Timestamp not found errors.
 const (
-	// Timestamp not found errors.
-	errTSNotFound errors.Error = "ts not found"
-	errTSTooLate  errors.Error = "ts too late"
-	errTSTooEarly errors.Error = "ts too early"
-
-	// maxEntrySize is a maximum size of the entry.
-	//
-	// TODO: Find a way to grow buffer instead of relying on this value when
-	// reading strings.
-	maxEntrySize = 16 * 1024
-
-	// bufferSize should be enough for at least this number of entries.
-	bufferSize = 100 * maxEntrySize
+	ErrTSNotFound errors.Error = "ts not found"
+	ErrTSTooLate  errors.Error = "ts too late"
+	ErrTSTooEarly errors.Error = "ts too early"
 )
 
-// qLogFile represents a single query log file.  It allows reading from the
-// file in the reverse order.
+// TODO: Find a way to grow buffer instead of relying on this value when reading strings
+const maxEntrySize = 16 * 1024
+
+// buffer should be enough for at least this number of entries
+const bufferSize = 100 * maxEntrySize
+
+// QLogFile represents a single query log file
+// It allows reading from the file in the reverse order
 //
-// Please note, that this is a stateful object.  Internally, it contains a
-// pointer to a specific position in the file, and it reads lines in reverse
-// order starting from that position.
-type qLogFile struct {
-	// file is the query log file.
-	file *os.File
+// Please note that this is a stateful object.
+// Internally, it contains a pointer to a specific position in the file,
+// and it reads lines in reverse order starting from that position.
+type QLogFile struct {
+	file     *os.File // the query log file
+	position int64    // current position in the file
 
-	// buffer that we've read from the file.
-	buffer []byte
+	buffer      []byte // buffer that we've read from the file
+	bufferStart int64  // start of the buffer (in the file)
+	bufferLen   int    // buffer len
 
-	// lock is a mutex to make it thread-safe.
-	lock sync.Mutex
-
-	// position is the position in the file.
-	position int64
-
-	// bufferStart is the start of the buffer (in the file).
-	bufferStart int64
-
-	// bufferLen is the length of the buffer.
-	bufferLen int
+	lock sync.Mutex // We use mutex to make it thread-safe
 }
 
-// newQLogFile initializes a new instance of the qLogFile.
-func newQLogFile(path string) (qf *qLogFile, err error) {
+// NewQLogFile initializes a new instance of the QLogFile
+func NewQLogFile(path string) (*QLogFile, error) {
 	f, err := os.OpenFile(path, os.O_RDONLY, 0o644)
 	if err != nil {
 		return nil, err
 	}
 
-	return &qLogFile{file: f}, nil
-}
-
-// validateQLogLineIdx returns error if the line index is not valid to continue
-// search.
-func (q *qLogFile) validateQLogLineIdx(lineIdx, lastProbeLineIdx, ts, fSize int64) (err error) {
-	if lineIdx == lastProbeLineIdx {
-		if lineIdx == 0 {
-			return errTSTooEarly
-		}
-
-		// If we're testing the same line twice then most likely the scope is
-		// too narrow and we won't find anything anymore in any other file.
-		return fmt.Errorf("looking up timestamp %d in %q: %w", ts, q.file.Name(), errTSNotFound)
-	} else if lineIdx == fSize {
-		return errTSTooLate
-	}
-
-	return nil
+	return &QLogFile{
+		file: f,
+	}, nil
 }
 
 // seekTS performs binary search in the query log file looking for a record
-// with the specified timestamp.  Once the record is found, it sets "position"
-// so that the next ReadNext call returned that record.
+// with the specified timestamp. Once the record is found, it sets
+// "position" so that the next ReadNext call returned that record.
 //
 // The algorithm is rather simple:
-//  1. It starts with the position in the middle of a file.
-//  2. Shifts back to the beginning of the line.
-//  3. Checks the log record timestamp.
-//  4. If it is lower than the timestamp we are looking for, it shifts seek
-//     position to 3/4 of the file. Otherwise, to 1/4 of the file.
-//  5. It performs the search again, every time the search scope is narrowed
-//     twice.
+// 1. It starts with the position in the middle of a file
+// 2. Shifts back to the beginning of the line
+// 3. Checks the log record timestamp
+// 4. If it is lower than the timestamp we are looking for,
+// it shifts seek position to 3/4 of the file. Otherwise, to 1/4 of the file.
+// 5. It performs the search again, every time the search scope is narrowed twice.
 //
 // Returns:
-//   - It returns the position of the line with the timestamp we were looking
-//     for so that when we call "ReadNext" this line was returned.
-//   - Depth of the search (how many times we compared timestamps).
-//   - If we could not find it, it returns one of the errors described above.
-func (q *qLogFile) seekTS(timestamp int64) (pos int64, depth int, err error) {
+// * It returns the position of the the line with the timestamp we were looking for
+// so that when we call "ReadNext" this line was returned.
+// * Depth of the search (how many times we compared timestamps).
+// * If we could not find it, it returns one of the errors described above.
+func (q *QLogFile) seekTS(timestamp int64) (int64, int, error) {
 	q.lock.Lock()
 	defer q.lock.Unlock()
 
-	// Empty the buffer.
+	// Empty the buffer
 	q.buffer = nil
 
-	// First of all, check the file size.
+	// First of all, check the file size
 	fileInfo, err := q.file.Stat()
 	if err != nil {
 		return 0, 0, err
 	}
 
-	// Define the search scope.
-
-	// Start of the search interval (position in the file).
-	start := int64(0)
-	// End of the search interval (position in the file).
-	end := fileInfo.Size()
-	// Probe is the approximate index of the line we'll try to check.
-	probe := (end - start) / 2
-
+	// Define the search scope
+	start := int64(0)          // start of the search interval (position in the file)
+	end := fileInfo.Size()     // end of the search interval (position in the file)
+	probe := (end - start) / 2 // probe -- approximate index of the line we'll try to check
 	var line string
-	// Index of the probe line in the file.
-	var lineIdx int64
+	var lineIdx int64 // index of the probe line in the file
 	var lineEndIdx int64
-	// Index of the last probe line.
-	var lastProbeLineIdx int64
+	var lastProbeLineIdx int64 // index of the last probe line
 	lastProbeLineIdx = -1
 
-	// Count seek depth in order to detect mistakes.  If depth is too large,
-	// we should stop the search.
+	// Count seek depth in order to detect mistakes
+	// If depth is too large, we should stop the search
+	depth := 0
+
 	for {
-		// Get the line at the specified position.
+		// Get the line at the specified position
 		line, lineIdx, lineEndIdx, err = q.readProbeLine(probe)
 		if err != nil {
 			return 0, depth, err
 		}
 
-		// Check if the line index if invalid.
-		err = q.validateQLogLineIdx(lineIdx, lastProbeLineIdx, timestamp, fileInfo.Size())
-		if err != nil {
-			return 0, depth, err
+		if lineIdx == lastProbeLineIdx {
+			if lineIdx == 0 {
+				return 0, depth, ErrTSTooEarly
+			}
+
+			// If we're testing the same line twice then most likely
+			// the scope is too narrow and we won't find anything
+			// anymore in any other file.
+			return 0, depth, fmt.Errorf("looking up timestamp %d in %q: %w", timestamp, q.file.Name(), ErrTSNotFound)
+		} else if lineIdx == fileInfo.Size() {
+			return 0, depth, ErrTSTooLate
 		}
 
-		// Save the last found idx.
+		// Save the last found idx
 		lastProbeLineIdx = lineIdx
 
-		// Get the timestamp from the query log record.
+		// Get the timestamp from the query log record
 		ts := readQLogTimestamp(line)
 		if ts == 0 {
-			return 0, depth, fmt.Errorf(
-				"looking up timestamp %d in %q: record %q has empty timestamp",
-				timestamp,
-				q.file.Name(),
-				line,
-			)
+			return 0, depth, fmt.Errorf("looking up timestamp %d in %q: record %q has empty timestamp", timestamp, q.file.Name(), line)
 		}
 
 		if ts == timestamp {
-			// Hurray, returning the result.
+			// Hurray, returning the result
 			break
 		}
 
-		// Narrow the scope and repeat the search.
+		// Narrow the scope and repeat the search
 		if ts > timestamp {
-			// If the timestamp we're looking for is OLDER than what we found,
-			// then the line is somewhere on the LEFT side from the current
-			// probe position.
+			// If the timestamp we're looking for is OLDER than what we found
+			// Then the line is somewhere on the LEFT side from the current probe position
 			end = lineIdx
 		} else {
-			// If the timestamp we're looking for is NEWER than what we found,
-			// then the line is somewhere on the RIGHT side from the current
-			// probe position.
+			// If the timestamp we're looking for is NEWER than what we found
+			// Then the line is somewhere on the RIGHT side from the current probe position
 			start = lineEndIdx
 		}
 		probe = start + (end-start)/2
 
 		depth++
 		if depth >= 100 {
-			return 0, depth, fmt.Errorf(
-				"looking up timestamp %d in %q: depth %d too high: %w",
-				timestamp,
-				q.file.Name(),
-				depth,
-				errTSNotFound,
-			)
+			return 0, depth, fmt.Errorf("looking up timestamp %d in %q: depth %d too high: %w", timestamp, q.file.Name(), depth, ErrTSNotFound)
 		}
 	}
 
@@ -194,39 +154,37 @@ func (q *qLogFile) seekTS(timestamp int64) (pos int64, depth int, err error) {
 	return q.position, depth, nil
 }
 
-// SeekStart changes the current position to the end of the file.  Please note,
-// that we're reading query log in the reverse order and that's why log start
-// is actually the end of file.
+// SeekStart changes the current position to the end of the file
+// Please note that we're reading query log in the reverse order
+// and that's why log start is actually the end of file
 //
-// Returns nil if we were able to change the current position.  Returns error
-// in any other case.
-func (q *qLogFile) SeekStart() (int64, error) {
+// Returns nil if we were able to change the current position.
+// Returns error in any other case.
+func (q *QLogFile) SeekStart() (int64, error) {
 	q.lock.Lock()
 	defer q.lock.Unlock()
 
-	// Empty the buffer.
+	// Empty the buffer
 	q.buffer = nil
 
-	// First of all, check the file size.
+	// First of all, check the file size
 	fileInfo, err := q.file.Stat()
 	if err != nil {
 		return 0, err
 	}
 
-	// Place the position to the very end of file.
+	// Place the position to the very end of file
 	q.position = fileInfo.Size() - 1
 	if q.position < 0 {
 		q.position = 0
 	}
-
 	return q.position, nil
 }
 
-// ReadNext reads the next line (in the reverse order) from the file and shifts
-// the current position left to the next (actually prev) line.
-//
-// Returns io.EOF if there's nothing more to read.
-func (q *qLogFile) ReadNext() (string, error) {
+// ReadNext reads the next line (in the reverse order) from the file
+// and shifts the current position left to the next (actually prev) line.
+// returns io.EOF if there's nothing to read more
+func (q *QLogFile) ReadNext() (string, error) {
 	q.lock.Lock()
 	defer q.lock.Unlock()
 
@@ -239,34 +197,35 @@ func (q *qLogFile) ReadNext() (string, error) {
 		return "", err
 	}
 
-	// Shift position.
+	// Shift position
 	if lineIdx == 0 {
 		q.position = 0
 	} else {
-		// There's usually a line break before the line, so we should shift one
-		// more char left from the line "\nline".
+		// there's usually a line break before the line
+		// so we should shift one more char left from the line
+		// line\nline
 		q.position = lineIdx - 1
 	}
 	return line, err
 }
 
-// Close frees the underlying resources.
-func (q *qLogFile) Close() error {
+// Close frees the underlying resources
+func (q *QLogFile) Close() error {
 	return q.file.Close()
 }
 
-// readNextLine reads the next line from the specified position.  This line
-// actually have to END on that position.
+// readNextLine reads the next line from the specified position
+// this line actually have to END on that position.
 //
-// The algorithm is:
-//  1. Check if we have the buffer initialized.
-//  2. If it is so, scan it and look for the line there.
-//  3. If we cannot find the line there, read the prev chunk into the buffer.
-//  4. Read the line from the buffer.
-func (q *qLogFile) readNextLine(position int64) (string, int64, error) {
+// the algorithm is:
+// 1. check if we have the buffer initialized
+// 2. if it is, scan it and look for the line there
+// 3. if we cannot find the line there, read the prev chunk into the buffer
+// 4. read the line from the buffer
+func (q *QLogFile) readNextLine(position int64) (string, int64, error) {
 	relativePos := position - q.bufferStart
 	if q.buffer == nil || (relativePos < maxEntrySize && q.bufferStart != 0) {
-		// Time to re-init the buffer.
+		// Time to re-init the buffer
 		err := q.initBuffer(position)
 		if err != nil {
 			return "", 0, err
@@ -274,7 +233,8 @@ func (q *qLogFile) readNextLine(position int64) (string, int64, error) {
 		relativePos = position - q.bufferStart
 	}
 
-	// Look for the end of the prev line, this is where we'll read from.
+	// Look for the end of the prev line
+	// This is where we'll read from
 	startLine := int64(0)
 	for i := relativePos - 1; i >= 0; i-- {
 		if q.buffer[i] == '\n' {
@@ -285,19 +245,18 @@ func (q *qLogFile) readNextLine(position int64) (string, int64, error) {
 
 	line := string(q.buffer[startLine:relativePos])
 	lineIdx := q.bufferStart + startLine
-
 	return line, lineIdx, nil
 }
 
-// initBuffer initializes the qLogFile buffer.  The goal is to read a chunk of
-// file that includes the line with the specified position.
-func (q *qLogFile) initBuffer(position int64) error {
+// initBuffer initializes the QLogFile buffer.
+// the goal is to read a chunk of file that includes the line with the specified position.
+func (q *QLogFile) initBuffer(position int64) error {
 	q.bufferStart = int64(0)
 	if position > bufferSize {
 		q.bufferStart = position - bufferSize
 	}
 
-	// Seek to this position.
+	// Seek to this position
 	_, err := q.file.Seek(q.bufferStart, io.SeekStart)
 	if err != nil {
 		return err
@@ -312,35 +271,34 @@ func (q *qLogFile) initBuffer(position int64) error {
 	return err
 }
 
-// readProbeLine reads a line that includes the specified position.  This
-// method is supposed to be used when we use binary search in the Seek method.
-// In the case of consecutive reads, use readNext, cause it uses better buffer.
-func (q *qLogFile) readProbeLine(position int64) (string, int64, int64, error) {
-	// First of all, we should read a buffer that will include the query log
-	// line.  In order to do this, we'll define the boundaries.
+// readProbeLine reads a line that includes the specified position
+// this method is supposed to be used when we use binary search in the Seek method
+// in the case of consecutive reads, use readNext (it uses a better buffer)
+func (q *QLogFile) readProbeLine(position int64) (string, int64, int64, error) {
+	// First of all, we should read a buffer that will include the query log line
+	// In order to do this, we'll define the boundaries
 	seekPosition := int64(0)
-	// Position relative to the buffer we're going to read.
-	relativePos := position
+	relativePos := position // position relative to the buffer we're going to read
 	if position > maxEntrySize {
 		seekPosition = position - maxEntrySize
 		relativePos = maxEntrySize
 	}
 
-	// Seek to this position.
+	// Seek to this position
 	_, err := q.file.Seek(seekPosition, io.SeekStart)
 	if err != nil {
 		return "", 0, 0, err
 	}
 
-	// The buffer size is 2*maxEntrySize.
+	// The buffer size is 2*maxEntrySize
 	buffer := make([]byte, maxEntrySize*2)
 	bufferLen, err := q.file.Read(buffer)
 	if err != nil {
 		return "", 0, 0, err
 	}
 
-	// Now start looking for the new line character starting from the
-	// relativePos and going left.
+	// Now start looking for the new line character starting
+	// from the relativePos and going left
 	startLine := int64(0)
 	for i := relativePos - 1; i >= 0; i-- {
 		if buffer[i] == '\n' {
@@ -348,7 +306,7 @@ func (q *qLogFile) readProbeLine(position int64) (string, int64, int64, error) {
 			break
 		}
 	}
-	// Looking for the end of line now.
+	// Looking for the end of line now
 	endLine := int64(bufferLen)
 	lineEndIdx := endLine + seekPosition
 	for i := relativePos; i < int64(bufferLen); i++ {
@@ -359,13 +317,13 @@ func (q *qLogFile) readProbeLine(position int64) (string, int64, int64, error) {
 		}
 	}
 
-	// Finally we can return the string we were looking for.
+	// Finally we can return the string we were looking for
 	lineIdx := startLine + seekPosition
 	return string(buffer[startLine:endLine]), lineIdx, lineEndIdx, nil
 }
 
-// readJSONValue reads a JSON string in form of '"key":"value"'.  prefix must
-// be of the form '"key":"' to generate less garbage.
+// readJSONvalue reads a JSON string in form of '"key":"value"'.  prefix must be
+// of the form '"key":"' to generate less garbage.
 func readJSONValue(s, prefix string) string {
 	i := strings.Index(s, prefix)
 	if i == -1 {
@@ -382,7 +340,7 @@ func readJSONValue(s, prefix string) string {
 	return s[start:end]
 }
 
-// readQLogTimestamp reads the timestamp field from the query log line.
+// readQLogTimestamp reads the timestamp field from the query log line
 func readQLogTimestamp(str string) int64 {
 	val := readJSONValue(str, `"T":"`)
 	if len(val) == 0 {
@@ -393,12 +351,10 @@ func readQLogTimestamp(str string) int64 {
 		log.Error("Couldn't find timestamp: %s", str)
 		return 0
 	}
-
 	tm, err := time.Parse(time.RFC3339Nano, val)
 	if err != nil {
 		log.Error("Couldn't parse timestamp: %s", val)
 		return 0
 	}
-
 	return tm.UnixNano()
 }

internal/querylog/qlogfile_test.go

@@ -72,15 +72,15 @@ func prepareTestFiles(t *testing.T, filesNum, linesNum int) []string {
 	return files
 }
 
-// newTestQLogFile creates new *qLogFile for tests and registers the required
+// newTestQLogFile creates new *QLogFile for tests and registers the required
 // cleanup functions.
-func newTestQLogFile(t *testing.T, linesNum int) (file *qLogFile) {
+func newTestQLogFile(t *testing.T, linesNum int) (file *QLogFile) {
 	t.Helper()
 
 	testFile := prepareTestFiles(t, 1, linesNum)[0]
 
-	// Create the new qLogFile instance.
-	file, err := newQLogFile(testFile)
+	// Create the new QLogFile instance.
+	file, err := NewQLogFile(testFile)
 	require.NoError(t, err)
 
 	assert.NotNil(t, file)
@@ -240,7 +240,7 @@ func TestQLogFile_SeekTS_bad(t *testing.T) {
 	}
 }
 
-func getQLogFileLine(q *qLogFile, lineNumber int) (line string, err error) {
+func getQLogFileLine(q *QLogFile, lineNumber int) (line string, err error) {
 	if _, err = q.SeekStart(); err != nil {
 		return line, err
 	}
@@ -256,7 +256,7 @@ func getQLogFileLine(q *qLogFile, lineNumber int) (line string, err error) {
 
 // Check adding and loading (with filtering) entries from disk and memory.
 func TestQLogFile(t *testing.T) {
-	// Create the new qLogFile instance.
+	// Create the new QLogFile instance.
 	q := newTestQLogFile(t, 2)
 
 	// Seek to the start.
@@ -285,7 +285,7 @@ func TestQLogFile(t *testing.T) {
 	assert.Empty(t, line)
 }
 
-func newTestQLogFileData(t *testing.T, data string) (file *qLogFile) {
+func NewTestQLogFileData(t *testing.T, data string) (file *QLogFile) {
 	f, err := os.CreateTemp(t.TempDir(), "*.txt")
 	require.NoError(t, err)
 	testutil.CleanupAndRequireSuccess(t, f.Close)
@@ -293,7 +293,7 @@ func newTestQLogFileData(t *testing.T, data string) (file *qLogFile) {
 	_, err = f.WriteString(data)
 	require.NoError(t, err)
 
-	file, err = newQLogFile(f.Name())
+	file, err = NewQLogFile(f.Name())
 	require.NoError(t, err)
 	testutil.CleanupAndRequireSuccess(t, file.Close)
 
@@ -309,9 +309,9 @@ func TestQLog_Seek(t *testing.T) {
 	timestamp, _ := time.Parse(time.RFC3339Nano, "2020-08-31T18:44:25.376690873+03:00")
 
 	testCases := []struct {
-		wantErr   error
 		name      string
 		delta     int
+		wantErr   error
 		wantDepth int
 	}{{
 		name:      "ok",
@@ -321,12 +321,12 @@ func TestQLog_Seek(t *testing.T) {
 	}, {
 		name:      "too_late",
 		delta:     2,
-		wantErr:   errTSTooLate,
+		wantErr:   ErrTSTooLate,
 		wantDepth: 2,
 	}, {
 		name:      "too_early",
 		delta:     -2,
-		wantErr:   errTSTooEarly,
+		wantErr:   ErrTSTooEarly,
 		wantDepth: 1,
 	}}
 
@@ -338,7 +338,7 @@ func TestQLog_Seek(t *testing.T) {
 				timestamp.Add(time.Second).Format(time.RFC3339Nano),
 			)
 
-			q := newTestQLogFileData(t, data)
+			q := NewTestQLogFileData(t, data)
 
 			_, depth, err := q.seekTS(timestamp.Add(time.Second * time.Duration(tc.delta)).UnixNano())
 			require.Truef(t, errors.Is(err, tc.wantErr), "%v", err)

internal/querylog/qlogreader.go

@@ -9,36 +9,36 @@ import (
 	"github.com/AdguardTeam/golibs/log"
 )
 
-// qLogReader allows reading from multiple query log files in the reverse
-// order.
+// QLogReader allows reading from multiple query log files in the reverse order.
 //
-// Please note that this is a stateful object.  Internally, it contains a
-// pointer to a particular query log file, and to a specific position in this
-// file, and it reads lines in reverse order starting from that position.
-type qLogReader struct {
-	// qFiles is an array with the query log files.  The order is from oldest
-	// to newest.
-	qFiles []*qLogFile
+// Please note that this is a stateful object.
+// Internally, it contains a pointer to a particular query log file, and
+// to a specific position in this file, and it reads lines in reverse order
+// starting from that position.
+type QLogReader struct {
+	// qFiles - array with the query log files
+	// The order is - from oldest to newest
+	qFiles []*QLogFile
 
-	// currentFile is the index of the current file.
-	currentFile int
+	currentFile int // Index of the current file
 }
 
-// newQLogReader initializes a qLogReader instance with the specified files.
-func newQLogReader(files []string) (*qLogReader, error) {
-	qFiles := make([]*qLogFile, 0)
+// NewQLogReader initializes a QLogReader instance
+// with the specified files
+func NewQLogReader(files []string) (*QLogReader, error) {
+	qFiles := make([]*QLogFile, 0)
 
 	for _, f := range files {
-		q, err := newQLogFile(f)
+		q, err := NewQLogFile(f)
 		if err != nil {
 			if errors.Is(err, os.ErrNotExist) {
 				continue
 			}
 
 			// Close what we've already opened.
-			cErr := closeQFiles(qFiles)
-			if cErr != nil {
-				log.Debug("querylog: closing files: %s", cErr)
+			cerr := closeQFiles(qFiles)
+			if cerr != nil {
+				log.Debug("querylog: closing files: %s", cerr)
 			}
 
 			return nil, err
@@ -47,28 +47,31 @@ func newQLogReader(files []string) (*qLogReader, error) {
 		qFiles = append(qFiles, q)
 	}
 
-	return &qLogReader{qFiles: qFiles, currentFile: len(qFiles) - 1}, nil
+	return &QLogReader{
+		qFiles:      qFiles,
+		currentFile: (len(qFiles) - 1),
+	}, nil
 }
 
 // seekTS performs binary search of a query log record with the specified
-// timestamp.  If the record is found, it sets qLogReader's position to point
-// to that line, so that the next ReadNext call returned this line.
-func (r *qLogReader) seekTS(timestamp int64) (err error) {
+// timestamp.  If the record is found, it sets QLogReader's position to point to
+// that line, so that the next ReadNext call returned this line.
+func (r *QLogReader) seekTS(timestamp int64) (err error) {
 	for i := len(r.qFiles) - 1; i >= 0; i-- {
 		q := r.qFiles[i]
 		_, _, err = q.seekTS(timestamp)
 		if err != nil {
-			if errors.Is(err, errTSTooEarly) {
+			if errors.Is(err, ErrTSTooEarly) {
 				// Look at the next file, since we've reached the end of this
 				// one.  If there is no next file, it's not found.
-				err = errTSNotFound
+				err = ErrTSNotFound
 
 				continue
-			} else if errors.Is(err, errTSTooLate) {
+			} else if errors.Is(err, ErrTSTooLate) {
 				// Just seek to the start then.  timestamp is probably between
 				// the end of the previous one and the start of this one.
 				return r.SeekStart()
-			} else if errors.Is(err, errTSNotFound) {
+			} else if errors.Is(err, ErrTSNotFound) {
 				return err
 			} else {
 				return fmt.Errorf("seekts: file at index %d: %w", i, err)
@@ -77,7 +80,7 @@ func (r *qLogReader) seekTS(timestamp int64) (err error) {
 
 		// The search is finished, and the searched element has been found.
 		// Update currentFile only, position is already set properly in
-		// qLogFile.
+		// QLogFile.
 		r.currentFile = i
 
 		return nil
@@ -90,13 +93,13 @@ func (r *qLogReader) seekTS(timestamp int64) (err error) {
 	return nil
 }
 
-// SeekStart changes the current position to the end of the newest file.
-// Please note that we're reading query log in the reverse order and that's why
-// the log starts actually at the end of file.
+// SeekStart changes the current position to the end of the newest file
+// Please note that we're reading query log in the reverse order
+// and that's why log start is actually the end of file
 //
-// Returns nil if we were able to change the current position.  Returns error
-// in any other cases.
-func (r *qLogReader) SeekStart() error {
+// Returns nil if we were able to change the current position.
+// Returns error in any other case.
+func (r *QLogReader) SeekStart() error {
 	if len(r.qFiles) == 0 {
 		return nil
 	}
@@ -107,12 +110,10 @@ func (r *qLogReader) SeekStart() error {
 	return err
 }
 
-// ReadNext reads the next line (in the reverse order) from the query log
-// files.  Then shifts the current position left to the next (actually prev)
-// line (or the next file).
-//
-// Returns io.EOF if there is nothing more to read.
-func (r *qLogReader) ReadNext() (string, error) {
+// ReadNext reads the next line (in the reverse order) from the query log files.
+// and shifts the current position left to the next (actually prev) line (or the next file).
+// returns io.EOF if there's nothing to read more.
+func (r *QLogReader) ReadNext() (string, error) {
 	if len(r.qFiles) == 0 {
 		return "", io.EOF
 	}
@@ -121,7 +122,7 @@ func (r *qLogReader) ReadNext() (string, error) {
 		q := r.qFiles[r.currentFile]
 		line, err := q.ReadNext()
 		if err != nil {
-			// Shift to the older file.
+			// Shift to the older file
 			r.currentFile--
 			if r.currentFile < 0 {
 				break
@@ -129,10 +130,10 @@ func (r *qLogReader) ReadNext() (string, error) {
 
 			q = r.qFiles[r.currentFile]
 
-			// Set its position to the start right away.
+			// Set it's position to the start right away
 			_, err = q.SeekStart()
 
-			// This is unexpected, return an error right away.
+			// This is unexpected, return an error right away
 			if err != nil {
 				return "", err
 			}
@@ -141,17 +142,17 @@ func (r *qLogReader) ReadNext() (string, error) {
 		}
 	}
 
-	// Nothing to read anymore.
+	// Nothing to read anymore
 	return "", io.EOF
 }
 
-// Close closes the qLogReader.
-func (r *qLogReader) Close() error {
+// Close closes the QLogReader
+func (r *QLogReader) Close() error {
 	return closeQFiles(r.qFiles)
 }
 
-// closeQFiles is a helper method to close multiple qLogFile instances.
-func closeQFiles(qFiles []*qLogFile) error {
+// closeQFiles - helper method to close multiple QLogFile instances
+func closeQFiles(qFiles []*QLogFile) error {
 	var errs []error
 
 	for _, q := range qFiles {
@@ -162,7 +163,7 @@ func closeQFiles(qFiles []*qLogFile) error {
 	}
 
 	if len(errs) > 0 {
-		return errors.List("error while closing qLogReader", errs...)
+		return errors.List("error while closing QLogReader", errs...)
 	}
 
 	return nil

internal/querylog/qlogreader_test.go

@@ -10,15 +10,15 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-// newTestQLogReader creates new *qLogReader for tests and registers the
+// newTestQLogReader creates new *QLogReader for tests and registers the
 // required cleanup functions.
-func newTestQLogReader(t *testing.T, filesNum, linesNum int) (reader *qLogReader) {
+func newTestQLogReader(t *testing.T, filesNum, linesNum int) (reader *QLogReader) {
 	t.Helper()
 
 	testFiles := prepareTestFiles(t, filesNum, linesNum)
 
-	// Create the new qLogReader instance.
-	reader, err := newQLogReader(testFiles)
+	// Create the new QLogReader instance.
+	reader, err := NewQLogReader(testFiles)
 	require.NoError(t, err)
 
 	assert.NotNil(t, reader)
@@ -75,9 +75,9 @@ func TestQLogReader_Seek(t *testing.T) {
 	r := newTestQLogReader(t, 2, 10000)
 
 	testCases := []struct {
-		want error
 		name string
 		time string
+		want error
 	}{{
 		name: "not_too_old",
 		time: "2020-02-18T22:39:35.920973+03:00",
@@ -97,7 +97,7 @@ func TestQLogReader_Seek(t *testing.T) {
 	}, {
 		name: "non-existent_long_ago",
 		time: "2000-02-19T01:23:16.920973+03:00",
-		want: errTSNotFound,
+		want: ErrTSNotFound,
 	}, {
 		name: "non-existent_far_ahead",
 		time: "2100-02-19T01:23:16.920973+03:00",
@@ -105,7 +105,7 @@ func TestQLogReader_Seek(t *testing.T) {
 	}, {
 		name: "non-existent_but_could",
 		time: "2020-02-18T22:36:37.000000+03:00",
-		want: errTSNotFound,
+		want: ErrTSNotFound,
 	}}
 
 	for _, tc := range testCases {
@@ -125,9 +125,9 @@ func TestQLogReader_ReadNext(t *testing.T) {
 	r := newTestQLogReader(t, filesNum, linesNum)
 
 	testCases := []struct {
-		want  error
 		name  string
 		start int
+		want  error
 	}{{
 		name:  "ok",
 		start: 0,

internal/querylog/search.go

@@ -1,11 +1,9 @@
 package querylog
 
 import (
-	"fmt"
 	"io"
 	"time"
 
-	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
 	"golang.org/x/exp/slices"
 )
@@ -136,112 +134,84 @@ func (l *queryLog) search(params *searchParams) (entries []*logEntry, oldest tim
 	return entries, oldest
 }
 
-// seekRecord changes the current position to the next record older than the
-// provided parameter.
-func (r *qLogReader) seekRecord(olderThan time.Time) (err error) {
-	if olderThan.IsZero() {
-		return r.SeekStart()
-	}
-
-	err = r.seekTS(olderThan.UnixNano())
-	if err == nil {
-		// Read to the next record, because we only need the one that goes
-		// after it.
-		_, err = r.ReadNext()
-	}
-
-	return err
-}
-
-// setQLogReader creates a reader with the specified files and sets the
-// position to the next record older than the provided parameter.
-func (l *queryLog) setQLogReader(olderThan time.Time) (qr *qLogReader, err error) {
+// searchFiles looks up log records from all log files.  It optionally uses the
+// client cache, if provided.  searchFiles does not scan more than
+// maxFileScanEntries so callers may need to call it several times to get all
+// results.  oldest and total are the time of the oldest processed entry and the
+// total number of processed entries, including discarded ones, correspondingly.
+func (l *queryLog) searchFiles(
+	params *searchParams,
+	cache clientCache,
+) (entries []*logEntry, oldest time.Time, total int) {
 	files := []string{
 		l.logFile + ".1",
 		l.logFile,
 	}
 
-	r, err := newQLogReader(files)
+	r, err := NewQLogReader(files)
 	if err != nil {
-		return nil, fmt.Errorf("opening qlog reader: %s", err)
+		log.Error("querylog: opening qlog reader: %s", err)
+
+		return entries, oldest, 0
 	}
 
-	err = r.seekRecord(olderThan)
-	if err != nil {
-		defer func() { err = errors.WithDeferred(err, r.Close()) }()
-		log.Debug("querylog: cannot seek to %s: %s", olderThan, err)
+	defer func() {
+		closeErr := r.Close()
+		if closeErr != nil {
+			log.Error("querylog: closing file: %s", err)
+		}
+	}()
 
-		return nil, nil
+	if params.olderThan.IsZero() {
+		err = r.SeekStart()
+	} else {
+		err = r.seekTS(params.olderThan.UnixNano())
+		if err == nil {
+			// Read to the next record, because we only need the one that goes
+			// after it.
+			_, err = r.ReadNext()
+		}
 	}
 
-	return r, nil
-}
+	if err != nil {
+		log.Debug("querylog: cannot seek to %s: %s", params.olderThan, err)
 
-// readEntries reads entries from the reader to totalLimit.   By default, we do
-// not scan more than maxFileScanEntries at once.  The idea is to make search
-// calls faster so that the UI could handle it and show something quicker.
-// This behavior can be overridden if maxFileScanEntries is set to 0.
-func (l *queryLog) readEntries(
-	r *qLogReader,
-	params *searchParams,
-	cache clientCache,
-	totalLimit int,
-) (entries []*logEntry, oldestNano int64, total int) {
+		return entries, oldest, 0
+	}
+
+	totalLimit := params.offset + params.limit
+	oldestNano := int64(0)
+
+	// By default, we do not scan more than maxFileScanEntries at once.  The
+	// idea is to make search calls faster so that the UI could handle it and
+	// show something quicker.  This behavior can be overridden if
+	// maxFileScanEntries is set to 0.
 	for total < params.maxFileScanEntries || params.maxFileScanEntries <= 0 {
-		ent, ts, rErr := l.readNextEntry(r, params, cache)
-		if rErr != nil {
-			if rErr == io.EOF {
+		var e *logEntry
+		var ts int64
+
+		e, ts, err = l.readNextEntry(r, params, cache)
+		if err != nil {
+			if err == io.EOF {
 				oldestNano = 0
 
 				break
 			}
 
-			log.Error("querylog: reading next entry: %s", rErr)
+			log.Error("querylog: reading next entry: %s", err)
 		}
 
 		oldestNano = ts
 		total++
 
-		if ent == nil {
-			continue
-		}
-
-		entries = append(entries, ent)
-		if len(entries) == totalLimit {
-			break
+		if e != nil {
+			entries = append(entries, e)
+			if len(entries) == totalLimit {
+				break
+			}
 		}
 	}
 
-	return entries, oldestNano, total
-}
-
-// searchFiles looks up log records from all log files.  It optionally uses the
-// client cache, if provided.  searchFiles does not scan more than
-// maxFileScanEntries so callers may need to call it several times to get all
-// the results.  oldest and total are the time of the oldest processed entry
-// and the total number of processed entries, including discarded ones,
-// correspondingly.
-func (l *queryLog) searchFiles(
-	params *searchParams,
-	cache clientCache,
-) (entries []*logEntry, oldest time.Time, total int) {
-	r, err := l.setQLogReader(params.olderThan)
-	if err != nil {
-		log.Error("querylog: %s", err)
-	}
-
-	if r == nil {
-		return entries, oldest, 0
-	}
-
-	defer func() {
-		if closeErr := r.Close(); closeErr != nil {
-			log.Error("querylog: closing file: %s", closeErr)
-		}
-	}()
-
-	totalLimit := params.offset + params.limit
-	entries, oldestNano, total := l.readEntries(r, params, cache, totalLimit)
 	if oldestNano != 0 {
 		oldest = time.Unix(0, oldestNano)
 	}
@@ -273,11 +243,11 @@ func (f quickMatchClientFinder) findClient(clientID, ip string) (c *Client) {
 }
 
 // readNextEntry reads the next log entry and checks if it matches the search
-// criteria.  It optionally uses the client cache, if provided.  e is nil if
-// the entry doesn't match the search criteria.  ts is the timestamp of the
+// criteria.  It optionally uses the client cache, if provided.  e is nil if the
+// entry doesn't match the search criteria.  ts is the timestamp of the
 // processed entry.
 func (l *queryLog) readNextEntry(
-	r *qLogReader,
+	r *QLogReader,
 	params *searchParams,
 	cache clientCache,
 ) (e *logEntry, ts int64, err error) {

internal/querylog/searchparams.go

@@ -2,25 +2,18 @@ package querylog
 
 import "time"
 
-// searchParams represent the search query sent by the client.
+// searchParams represent the search query sent by the client
 type searchParams struct {
-	// olderThen represents a parameter for entries that are older than this
-	// parameter value.  If not set, disregard it and return any value.
-	olderThan time.Time
-
-	// searchCriteria is a list of search criteria that we use to get filter
-	// results.
+	// searchCriteria - list of search criteria that we use to get filter results
 	searchCriteria []searchCriterion
 
-	// offset for the search.
-	offset int
+	// olderThen - return entries that are older than this value
+	// if not set - disregard it and return any value
+	olderThan time.Time
 
-	// limit the number of records returned.
-	limit int
-
-	// maxFileScanEntries is a maximum of log entries to scan in query log
-	// files.  If not set, then no limit.
-	maxFileScanEntries int
+	offset             int // offset for the search
+	limit              int // limit the number of records returned
+	maxFileScanEntries int // maximum log entries to scan in query log files. if 0 - no limit
 }
 
 // newSearchParams - creates an empty instance of searchParams

internal/tools/go.mod

@@ -8,16 +8,16 @@ require (
 	github.com/gordonklaus/ineffassign v0.0.0-20230107090616-13ace0543b28
 	github.com/kisielk/errcheck v1.6.3
 	github.com/kyoh86/looppointer v0.2.1
-	github.com/securego/gosec/v2 v2.16.0
-	golang.org/x/tools v0.9.3
-	golang.org/x/vuln v0.1.0
+	github.com/securego/gosec/v2 v2.15.0
+	golang.org/x/tools v0.8.0
+	golang.org/x/vuln v0.0.0-20230418010118-28ba02ac73db
 	honnef.co/go/tools v0.4.3
 	mvdan.cc/gofumpt v0.5.0
 	mvdan.cc/unparam v0.0.0-20230312165513-e84e2d14e3b8
 )
 
 require (
-	github.com/BurntSushi/toml v1.3.1 // indirect
+	github.com/BurntSushi/toml v1.2.1 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/gookit/color v1.5.3 // indirect
@@ -25,9 +25,9 @@ require (
 	github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	golang.org/x/exp v0.0.0-20230321023759-10a507213a29 // indirect
-	golang.org/x/exp/typeparams v0.0.0-20230522175609-2e198f4a06a1 // indirect
+	golang.org/x/exp/typeparams v0.0.0-20230321023759-10a507213a29 // indirect
 	golang.org/x/mod v0.10.0 // indirect
-	golang.org/x/sync v0.2.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

internal/tools/go.sum

@@ -1,19 +1,17 @@
-github.com/BurntSushi/toml v1.3.1 h1:rHnDkSK+/g6DlREUK73PkmIs60pqrnuduK+JmP++JmU=
-github.com/BurntSushi/toml v1.3.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
+github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/client9/misspell v0.3.4 h1:ta993UF76GwbvJcIo3Y68y/M3WxlpEHPWIGDkJYwzJI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/frankban/quicktest v1.14.4 h1:g2rn0vABPOOXmZUj+vbmUp0lPoXEMuhTpIluN0XL9UY=
 github.com/fzipp/gocyclo v0.6.0 h1:lsblElZG7d3ALtGMx9fmxeTKZaLLpU8mET09yN4BBLo=
 github.com/fzipp/gocyclo v0.6.0/go.mod h1:rXPyn8fnlpa0R2csP/31uerbiVBugk5whMdlyaLkLoA=
-github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
-github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
 github.com/golangci/misspell v0.4.0 h1:KtVB/hTK4bbL/S6bs64rYyk8adjmh1BygbBiaAiX+a0=
 github.com/golangci/misspell v0.4.0/go.mod h1:W6O/bwV6lGDxUCChm2ykw9NQdd5bYd1Xkjo88UcWyJc=
 github.com/google/go-cmdtest v0.4.1-0.20220921163831-55ab3332a786 h1:rcv+Ippz6RAtvaGgKxc+8FQIpxHgsF+HBzPyYL2cyVU=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
 github.com/google/renameio v0.1.0 h1:GOZbcHa3HfsPKPlmyPyN2KEohoMXOhdMbHrvbpl2QaA=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -31,13 +29,13 @@ github.com/kyoh86/nolint v0.0.1 h1:GjNxDEkVn2wAxKHtP7iNTrRxytRZ1wXxLV5j4XzGfRU=
 github.com/kyoh86/nolint v0.0.1/go.mod h1:1ZiZZ7qqrZ9dZegU96phwVcdQOMKIqRzFJL3ewq9gtI=
 github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354 h1:4kuARK6Y6FxaNu/BnU2OAaLF86eTVhP2hjTB6iMvItA=
 github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354/go.mod h1:KSVJerMDfblTH7p5MZaTt+8zaT2iEk3AkVb9PQdZuE8=
-github.com/onsi/ginkgo/v2 v2.9.4 h1:xR7vG4IXt5RWx6FfIjyAtsoMAtnc3C/rFXBBd2AjZwE=
-github.com/onsi/gomega v1.27.6 h1:ENqfyGeS5AX/rlXDd/ETokDz93u0YufY1Pgxuy/PvWE=
+github.com/onsi/ginkgo/v2 v2.8.0 h1:pAM+oBNPrpXRs+E/8spkeGx9QgekbRVyr74EUvRVOUI=
+github.com/onsi/gomega v1.26.0 h1:03cDLK28U6hWvCAns6NeydX3zIm4SF3ci69ulidS32Q=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
-github.com/securego/gosec/v2 v2.16.0 h1:Pi0JKoasQQ3NnoRao/ww/N/XdynIB9NRYYZT5CyOs5U=
-github.com/securego/gosec/v2 v2.16.0/go.mod h1:xvLcVZqUfo4aAQu56TNv7/Ltz6emAOQAEsrZrt7uGlI=
+github.com/securego/gosec/v2 v2.15.0 h1:v4Ym7FF58/jlykYmmhZ7mTm7FQvN/setNm++0fgIAtw=
+github.com/securego/gosec/v2 v2.15.0/go.mod h1:VOjTrZOkUtSDt2QLSJmQBMWnvwiQPEjg0l+5juIqGk8=
 github.com/stretchr/testify v1.1.4/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
@@ -51,8 +49,8 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/exp v0.0.0-20230321023759-10a507213a29 h1:ooxPy7fPvB4kwsA2h+iBNHkAbp/4JxTSwCmvdjEYmug=
 golang.org/x/exp v0.0.0-20230321023759-10a507213a29/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
-golang.org/x/exp/typeparams v0.0.0-20230522175609-2e198f4a06a1 h1:pnP8r+W8Fm7XJ8CWtXi4S9oJmPBTrkfYN/dNbaPj6Y4=
-golang.org/x/exp/typeparams v0.0.0-20230522175609-2e198f4a06a1/go.mod h1:AbB0pIl9nAr9wVwH+Z2ZpaocVmF5I4GyWCDIsVjR0bk=
+golang.org/x/exp/typeparams v0.0.0-20230321023759-10a507213a29 h1:e7LhZmJ631l59keHP9ssC3sgSn3/oiEHKHKXDkimURY=
+golang.org/x/exp/typeparams v0.0.0-20230321023759-10a507213a29/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=
@@ -64,12 +62,12 @@ golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
+golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
-golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -79,23 +77,23 @@ 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 v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
+golang.org/x/sys v0.7.0/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=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
+golang.org/x/text v0.6.0 h1:3XmdazWV+ubf7QgHSTWeykHOci5oeekaGJBLkrkaw4k=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 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 v0.9.3 h1:Gn1I8+64MsuTb/HpH+LmQtNas23LhUVr3rYZ0eKuaMM=
-golang.org/x/tools v0.9.3/go.mod h1:owI94Op576fPu3cIGQeHs3joujW/2Oc6MtlxbF5dfNc=
-golang.org/x/vuln v0.1.0 h1:9GRdj6wAIkDrsMevuolY+SXERPjQPp2P1ysYA0jpZe0=
-golang.org/x/vuln v0.1.0/go.mod h1:/YuzZYjGbwB8y19CisAppfyw3uTZnuCz3r+qgx/QRzU=
+golang.org/x/tools v0.8.0 h1:vSDcovVPld282ceKgDimkRSC8kpaH1dgyc9UMzlt84Y=
+golang.org/x/tools v0.8.0/go.mod h1:JxBZ99ISMI5ViVkT1tr6tdNmXeTrcpVSD3vZ1RsRdN4=
+golang.org/x/vuln v0.0.0-20230418010118-28ba02ac73db h1:tLxfII6jPR3mfwEMkyOakawu+Lldo9hIA7vliXnDZYg=
+golang.org/x/vuln v0.0.0-20230418010118-28ba02ac73db/go.mod h1:64LpnL2PuSMzFYeCmJjYiRbroOUG9aCZYznINnF5PHE=
 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 v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

main.go

@@ -1,3 +1,5 @@
+//go:build !next
+
 package main
 
 import (

main_next.go

@@ -0,0 +1,20 @@
+//go:build next
+
+package main
+
+import (
+	"embed"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/next/cmd"
+)
+
+// Embed the prebuilt client here since we strive to keep .go files inside the
+// internal directory and the embed package is unable to embed files located
+// outside of the same or underlying directory.
+
+//go:embed build
+var clientBuildFS embed.FS
+
+func main() {
+	cmd.Main(clientBuildFS)
+}

openapi/CHANGELOG.md

@@ -12,18 +12,6 @@
   `GET /control/dhcp/interfaces` HTTP APIs is now correctly set to
   `application/json` as opposed to `text/plain`.
 
-### New HTTP API 'PUT /control/rewrite/update'
-
-* The new `PUT /control/rewrite/update` HTTP API allows rewrite rule updates.
-  It accepts a JSON object with the following format:
-
-```json
-{
-  "target": {"domain":"example.com","answer":"answer-to-update"},
-  "update": {"domain":"example.com","answer":"new-answer"}
-}
-```
-
 
 
 ## v0.107.29: API changes

scripts/make/go-build.sh

@@ -128,7 +128,13 @@ export CGO_ENABLED
 GO111MODULE='on'
 export GO111MODULE
 
-tags_flags='--tags='
+# Build the new binary if requested.
+if [ "${NEXTAPI:-0}" -eq '0' ]
+then
+	tags_flags='--tags='
+else
+	tags_flags='--tags=next'
+fi
 readonly tags_flags
 
 if [ "$verbose" -gt '0' ]

scripts/make/go-lint.sh

@@ -35,7 +35,7 @@ set -f -u
 go_version="$( "${GO:-go}" version )"
 readonly go_version
 
-go_min_version='go1.19.10'
+go_min_version='go1.19.8'
 go_version_msg="
 warning: your go version (${go_version}) is different from the recommended minimal one (${go_min_version}).
 if you have the version installed, please set the GO environment variable.
@@ -122,6 +122,7 @@ underscores() {
 			-e '_freebsd.go'\
 			-e '_linux.go'\
 			-e '_little.go'\
+			-e '_next.go'\
 			-e '_openbsd.go'\
 			-e '_others.go'\
 			-e '_test.go'\
@@ -159,7 +160,29 @@ run_linter "$GO" vet ./...
 
 run_linter govulncheck ./...
 
-run_linter gocyclo --over 10 .
+# Apply more lax standards to the code we haven't properly refactored yet.
+run_linter gocyclo --over 13 ./internal/querylog
+run_linter gocyclo --over 12 ./internal/dhcpd
+
+# Apply the normal standards to new or somewhat refactored code.
+run_linter gocyclo --over 10\
+	./internal/aghio/\
+	./internal/aghnet/\
+	./internal/aghos/\
+	./internal/aghtest/\
+	./internal/dnsforward/\
+	./internal/filtering/\
+	./internal/home/\
+	./internal/stats/\
+	./internal/tools/\
+	./internal/updater/\
+	./internal/next/\
+	./internal/version/\
+	./scripts/blocked-services/\
+	./scripts/vetted-filters/\
+	./scripts/translations/\
+	./main.go\
+	;
 
 run_linter ineffassign ./...