add annotations and fix linter warnings

relay/__init__.py

@@ -1,3 +1 @@
 __version__ = '0.2.4'
-
-from . import logger

relay/application.py

@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import asyncio
-import os
 import queue
 import signal
 import threading
 import traceback
+import typing
 
 from aiohttp import web
 from datetime import datetime, timedelta
@@ -12,20 +14,29 @@ from . import logger as logging
 from .config import RelayConfig
 from .database import RelayDatabase
 from .http_client import HttpClient
-from .misc import DotDict, check_open_port, set_app
+from .misc import check_open_port
 from .views import VIEWS
 
+if typing.TYPE_CHECKING:
+	from typing import Any
+	from .misc import Message
+
+
+# pylint: disable=unsubscriptable-object
+
 
 class Application(web.Application):
-	def __init__(self, cfgpath):
+	def __init__(self, cfgpath: str):
 		web.Application.__init__(self)
 
-		self['starttime'] = None
+		self['workers'] = []
+		self['last_worker'] = 0
+		self['start_time'] = None
 		self['running'] = False
 		self['config'] = RelayConfig(cfgpath)
 
-		if not self['config'].load():
-			self['config'].save()
+		if not self.config.load():
+			self.config.save()
 
 		if self.config.is_docker:
 			self.config.update({
@@ -34,13 +45,8 @@ class Application(web.Application):
 				'port': 8080
 			})
 
-		self['workers'] = []
-		self['last_worker'] = 0
-
-		set_app(self)
-
-		self['database'] = RelayDatabase(self['config'])
-		self['database'].load()
+		self['database'] = RelayDatabase(self.config)
+		self.database.load()
 
 		self['client'] = HttpClient(
 			database = self.database,
@@ -54,33 +60,34 @@ class Application(web.Application):
 
 
 	@property
-	def client(self):
+	def client(self) -> HttpClient:
 		return self['client']
 
 
 	@property
-	def config(self):
+	def config(self) -> RelayConfig:
 		return self['config']
 
 
 	@property
-	def database(self):
+	def database(self) -> RelayDatabase:
 		return self['database']
 
 
 	@property
-	def uptime(self):
-		if not self['starttime']:
+	def uptime(self) -> timedelta:
+		if not self['start_time']:
 			return timedelta(seconds=0)
 
-		uptime = datetime.now() - self['starttime']
+		uptime = datetime.now() - self['start_time']
 
 		return timedelta(seconds=uptime.seconds)
 
 
-	def push_message(self, inbox, message):
+	def push_message(self, inbox: str, message: Message) -> None:
 		if self.config.workers <= 0:
-			return asyncio.ensure_future(self.client.post(inbox, message))
+			asyncio.ensure_future(self.client.post(inbox, message))
+			return
 
 		worker = self['workers'][self['last_worker']]
 		worker.queue.put((inbox, message))
@@ -91,8 +98,8 @@ class Application(web.Application):
 			self['last_worker'] = 0
 
 
-	def set_signal_handler(self, startup):
-		for sig in {'SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGTERM'}:
+	def set_signal_handler(self, startup: bool) -> None:
+		for sig in ('SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGTERM'):
 			try:
 				signal.signal(getattr(signal, sig), self.stop if startup else signal.SIG_DFL)
 
@@ -101,9 +108,10 @@ class Application(web.Application):
 				pass
 
 
-	def run(self):
+	def run(self) -> None:
 		if not check_open_port(self.config.listen, self.config.port):
-			return logging.error('A server is already running on port %i', self.config.port)
+			logging.error('A server is already running on port %i', self.config.port)
+			return
 
 		for view in VIEWS:
 			self.router.add_view(*view)
@@ -118,17 +126,17 @@ class Application(web.Application):
 		asyncio.run(self.handle_run())
 
 
-	def stop(self, *_):
+	def stop(self, *_: Any) -> None:
 		self['running'] = False
 
 
-	async def handle_run(self):
+	async def handle_run(self) -> None:
 		self['running'] = True
 
 		self.set_signal_handler(True)
 
 		if self.config.workers > 0:
-			for i in range(self.config.workers):
+			for _ in range(self.config.workers):
 				worker = PushWorker(self)
 				worker.start()
 
@@ -137,14 +145,15 @@ class Application(web.Application):
 		runner = web.AppRunner(self, access_log_format='%{X-Forwarded-For}i "%r" %s %b "%{User-Agent}i"')
 		await runner.setup()
 
-		site = web.TCPSite(runner,
+		site = web.TCPSite(
+			runner,
 			host = self.config.listen,
 			port = self.config.port,
 			reuse_address = True
 		)
 
 		await site.start()
-		self['starttime'] = datetime.now()
+		self['start_time'] = datetime.now()
 
 		while self['running']:
 			await asyncio.sleep(0.25)
@@ -152,23 +161,24 @@ class Application(web.Application):
 		await site.stop()
 		await self.client.close()
 
-		self['starttime'] = None
+		self['start_time'] = None
 		self['running'] = False
 		self['workers'].clear()
 
 
 class PushWorker(threading.Thread):
-	def __init__(self, app):
+	def __init__(self, app: Application):
 		threading.Thread.__init__(self)
 		self.app = app
 		self.queue = queue.Queue()
+		self.client = None
 
 
-	def run(self):
+	def run(self) -> None:
 		asyncio.run(self.handle_queue())
 
 
-	async def handle_queue(self):
+	async def handle_queue(self) -> None:
 		self.client = HttpClient(
 			database = self.app.database,
 			limit = self.app.config.push_limit,

relay/config.py

@@ -1,5 +1,7 @@
-import json
+from __future__ import annotations
+
 import os
+import typing
 import yaml
 
 from functools import cached_property
@@ -8,6 +10,10 @@ from urllib.parse import urlparse
 
 from .misc import DotDict, boolean
 
+if typing.TYPE_CHECKING:
+	from typing import Any
+	from .database import RelayDatabase
+
 
 RELAY_SOFTWARE = [
 	'activityrelay', # https://git.pleroma.social/pleroma/relay
@@ -25,17 +31,19 @@ APKEYS = [
 
 
 class RelayConfig(DotDict):
-	def __init__(self, path):
+	__slots__ = ('path', )
+
+	def __init__(self, path: str | Path):
 		DotDict.__init__(self, {})
 
 		if self.is_docker:
 			path = '/data/config.yaml'
 
-		self._path = Path(path).expanduser()
+		self._path = Path(path).expanduser().resolve()
 		self.reset()
 
 
-	def __setitem__(self, key, value):
+	def __setitem__(self, key: str, value: Any) -> None:
 		if key in ['blocked_instances', 'blocked_software', 'whitelist']:
 			assert isinstance(value, (list, set, tuple))
 
@@ -51,36 +59,31 @@ class RelayConfig(DotDict):
 
 
 	@property
-	def db(self):
+	def db(self) -> RelayDatabase:
 		return Path(self['db']).expanduser().resolve()
 
 
 	@property
-	def path(self):
-		return self._path
-
-
-	@property
-	def actor(self):
+	def actor(self) -> str:
 		return f'https://{self.host}/actor'
 
 
 	@property
-	def inbox(self):
+	def inbox(self) -> str:
 		return f'https://{self.host}/inbox'
 
 
 	@property
-	def keyid(self):
+	def keyid(self) -> str:
 		return f'{self.actor}#main-key'
 
 
 	@cached_property
-	def is_docker(self):
+	def is_docker(self) -> bool:
 		return bool(os.environ.get('DOCKER_RUNNING'))
 
 
-	def reset(self):
+	def reset(self) -> None:
 		self.clear()
 		self.update({
 			'db': str(self._path.parent.joinpath(f'{self._path.stem}.jsonld')),
@@ -99,7 +102,7 @@ class RelayConfig(DotDict):
 		})
 
 
-	def ban_instance(self, instance):
+	def ban_instance(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
@@ -110,7 +113,7 @@ class RelayConfig(DotDict):
 		return True
 
 
-	def unban_instance(self, instance):
+	def unban_instance(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
@@ -118,11 +121,11 @@ class RelayConfig(DotDict):
 			self.blocked_instances.remove(instance)
 			return True
 
-		except:
+		except ValueError:
 			return False
 
 
-	def ban_software(self, software):
+	def ban_software(self, software: str) -> bool:
 		if self.is_banned_software(software):
 			return False
 
@@ -130,16 +133,16 @@ class RelayConfig(DotDict):
 		return True
 
 
-	def unban_software(self, software):
+	def unban_software(self, software: str) -> bool:
 		try:
 			self.blocked_software.remove(software)
 			return True
 
-		except:
+		except ValueError:
 			return False
 
 
-	def add_whitelist(self, instance):
+	def add_whitelist(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
@@ -150,7 +153,7 @@ class RelayConfig(DotDict):
 		return True
 
 
-	def del_whitelist(self, instance):
+	def del_whitelist(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
@@ -158,32 +161,32 @@ class RelayConfig(DotDict):
 			self.whitelist.remove(instance)
 			return True
 
-		except:
+		except ValueError:
 			return False
 
 
-	def is_banned(self, instance):
+	def is_banned(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
 		return instance in self.blocked_instances
 
 
-	def is_banned_software(self, software):
+	def is_banned_software(self, software: str) -> bool:
 		if not software:
 			return False
 
 		return software.lower() in self.blocked_software
 
 
-	def is_whitelisted(self, instance):
+	def is_whitelisted(self, instance: str) -> bool:
 		if instance.startswith('http'):
 			instance = urlparse(instance).hostname
 
 		return instance in self.whitelist
 
 
-	def load(self):
+	def load(self) -> bool:
 		self.reset()
 
 		options = {}
@@ -195,7 +198,7 @@ class RelayConfig(DotDict):
 			pass
 
 		try:
-			with open(self.path) as fd:
+			with self._path.open('r', encoding = 'UTF-8') as fd:
 				config = yaml.load(fd, **options)
 
 		except FileNotFoundError:
@@ -214,7 +217,7 @@ class RelayConfig(DotDict):
 
 				continue
 
-			elif key not in self:
+			if key not in self:
 				continue
 
 			self[key] = value
@@ -225,7 +228,7 @@ class RelayConfig(DotDict):
 		return True
 
 
-	def save(self):
+	def save(self) -> None:
 		config = {
 			# just turning config.db into a string is good enough for now
 			'db': str(self.db),
@@ -239,7 +242,5 @@ class RelayConfig(DotDict):
 			'ap': {key: self[key] for key in APKEYS}
 		}
 
-		with open(self._path, 'w') as fd:
+		with self._path.open('w', encoding = 'utf-8') as fd:
 			yaml.dump(config, fd, sort_keys=False)
-
-		return config

relay/database.py

@@ -1,15 +1,21 @@
+from __future__ import annotations
+
 import aputils
-import asyncio
 import json
-import traceback
+import typing
 
 from urllib.parse import urlparse
 
 from . import logger as logging
 
+if typing.TYPE_CHECKING:
+	from typing import Iterator, Optional
+	from .config import RelayConfig
+	from .misc import Message
+
 
 class RelayDatabase(dict):
-	def __init__(self, config):
+	def __init__(self, config: RelayConfig):
 		dict.__init__(self, {
 			'relay-list': {},
 			'private-key': None,
@@ -22,16 +28,16 @@ class RelayDatabase(dict):
 
 
 	@property
-	def hostnames(self):
+	def hostnames(self) -> tuple[str]:
 		return tuple(self['relay-list'].keys())
 
 
 	@property
-	def inboxes(self):
+	def inboxes(self) -> tuple[dict[str, str]]:
 		return tuple(data['inbox'] for data in self['relay-list'].values())
 
 
-	def load(self):
+	def load(self) -> bool:
 		new_db = True
 
 		try:
@@ -41,7 +47,7 @@ class RelayDatabase(dict):
 			self['version'] = data.get('version', None)
 			self['private-key'] = data.get('private-key')
 
-			if self['version'] == None:
+			if self['version'] is None:
 				self['version'] = 1
 
 				if 'actorKeys' in data:
@@ -59,7 +65,9 @@ class RelayDatabase(dict):
 				self['relay-list'] = data.get('relay-list', {})
 
 			for domain, instance in self['relay-list'].items():
-				if self.config.is_banned(domain) or (self.config.whitelist_enabled and not self.config.is_whitelisted(domain)):
+				if self.config.is_banned(domain) or \
+					(self.config.whitelist_enabled and not self.config.is_whitelisted(domain)):
+
 					self.del_inbox(domain)
 					continue
 
@@ -87,25 +95,29 @@ class RelayDatabase(dict):
 		return not new_db
 
 
-	def save(self):
-		with self.config.db.open('w') as fd:
+	def save(self) -> None:
+		with self.config.db.open('w', encoding = 'UTF-8') as fd:
 			json.dump(self, fd, indent=4)
 
 
-	def get_inbox(self, domain, fail=False):
+	def get_inbox(self, domain: str, fail: Optional[bool] = False) -> dict[str, str] | None:
 		if domain.startswith('http'):
 			domain = urlparse(domain).hostname
 
-		inbox = self['relay-list'].get(domain)
-
-		if inbox:
+		if (inbox := self['relay-list'].get(domain)):
 			return inbox
 
 		if fail:
 			raise KeyError(domain)
 
+		return None
+
+
+	def add_inbox(self,
+				inbox: str,
+				followid: Optional[str] = None,
+				software: Optional[str] = None) -> dict[str, str]:
 
-	def add_inbox(self, inbox, followid=None, software=None):
 		assert inbox.startswith('https'), 'Inbox must be a url'
 		domain = urlparse(inbox).hostname
 		instance = self.get_inbox(domain)
@@ -130,7 +142,11 @@ class RelayDatabase(dict):
 		return self['relay-list'][domain]
 
 
-	def del_inbox(self, domain, followid=None, fail=False):
+	def del_inbox(self,
+				domain: str,
+				followid: Optional[str] = None,
+				fail: Optional[bool] = False) -> bool:
+
 		data = self.get_inbox(domain, fail=False)
 
 		if not data:
@@ -151,7 +167,7 @@ class RelayDatabase(dict):
 		return False
 
 
-	def get_request(self, domain, fail=True):
+	def get_request(self, domain: str, fail: bool = True) -> dict[str, str] | None:
 		if domain.startswith('http'):
 			domain = urlparse(domain).hostname
 
@@ -162,8 +178,10 @@ class RelayDatabase(dict):
 			if fail:
 				raise e
 
+			return None
 
-	def add_request(self, actor, inbox, followid):
+
+	def add_request(self, actor: str, inbox: str, followid: str) -> None:
 		domain = urlparse(inbox).hostname
 
 		try:
@@ -180,14 +198,14 @@ class RelayDatabase(dict):
 		}
 
 
-	def del_request(self, domain):
+	def del_request(self, domain: str) -> None:
 		if domain.startswith('http'):
-			domain = urlparse(inbox).hostname
+			domain = urlparse(domain).hostname
 
 		del self['follow-requests'][domain]
 
 
-	def distill_inboxes(self, message):
+	def distill_inboxes(self, message: Message) -> Iterator[str]:
 		src_domains = {
 			message.domain,
 			urlparse(message.objectid).netloc

relay/http_client.py

@@ -1,21 +1,23 @@
+from __future__ import annotations
+
 import traceback
+import typing
 
 from aiohttp import ClientSession, ClientTimeout, TCPConnector
 from aiohttp.client_exceptions import ClientConnectionError, ClientSSLError
 from asyncio.exceptions import TimeoutError as AsyncTimeoutError
-from aputils import Nodeinfo, WellKnownNodeinfo
-from datetime import datetime
+from aputils.objects import Nodeinfo, WellKnownNodeinfo
 from cachetools import LRUCache
 from json.decoder import JSONDecodeError
 from urllib.parse import urlparse
 
 from . import __version__
 from . import logger as logging
-from .misc import (
-	MIMETYPES,
-	DotDict,
-	Message
-)
+from .misc import MIMETYPES, Message
+
+if typing.TYPE_CHECKING:
+	from typing import Any, Callable, Optional
+	from .database import RelayDatabase
 
 
 HEADERS = {
@@ -24,40 +26,31 @@ HEADERS = {
 }
 
 
-class Cache(LRUCache):
-	def set_maxsize(self, value):
-		self.__maxsize = int(value)
-
-
 class HttpClient:
-	def __init__(self, database, limit=100, timeout=10, cache_size=1024):
+	def __init__(self,
+				database: RelayDatabase,
+				limit: Optional[int] = 100,
+				timeout: Optional[int] = 10,
+				cache_size: Optional[int] = 1024):
+
 		self.database = database
-		self.cache = Cache(cache_size)
-		self.cfg = {'limit': limit, 'timeout': timeout}
+		self.cache = LRUCache(cache_size)
+		self.limit = limit
+		self.timeout = timeout
 		self._conn = None
 		self._session = None
 
 
-	async def __aenter__(self):
+	async def __aenter__(self) -> HttpClient:
 		await self.open()
 		return self
 
 
-	async def __aexit__(self, *_):
+	async def __aexit__(self, *_: Any) -> None:
 		await self.close()
 
 
-	@property
-	def limit(self):
-		return self.cfg['limit']
-
-
-	@property
-	def timeout(self):
-		return self.cfg['timeout']
-
-
-	async def open(self):
+	async def open(self) -> None:
 		if self._session:
 			return
 
@@ -74,7 +67,7 @@ class HttpClient:
 		)
 
 
-	async def close(self):
+	async def close(self) -> None:
 		if not self._session:
 			return
 
@@ -85,11 +78,19 @@ class HttpClient:
 		self._session = None
 
 
-	async def get(self, url, sign_headers=False, loads=None, force=False):
+	async def get(self,  # pylint: disable=too-many-branches
+				url: str,
+				sign_headers: Optional[bool] = False,
+				loads: Optional[Callable] = None,
+				force: Optional[bool] = False) -> Message | dict | None:
+
 		await self.open()
 
-		try: url, _ = url.split('#', 1)
-		except: pass
+		try:
+			url, _ = url.split('#', 1)
+
+		except ValueError:
+			pass
 
 		if not force and url in self.cache:
 			return self.cache[url]
@@ -105,12 +106,12 @@ class HttpClient:
 			async with self._session.get(url, headers=headers) as resp:
 				## Not expecting a response with 202s, so just return
 				if resp.status == 202:
-					return
+					return None
 
-				elif resp.status != 200:
+				if resp.status != 200:
 					logging.verbose('Received error when requesting %s: %i', url, resp.status)
 					logging.debug(await resp.read())
-					return
+					return None
 
 				if loads:
 					message = await resp.json(loads=loads)
@@ -119,12 +120,12 @@ class HttpClient:
 					message = await resp.json(loads = Message.parse)
 
 				elif resp.content_type == MIMETYPES['json']:
-					message = await resp.json(loads=DotDict.parse)
+					message = await resp.json()
 
 				else:
-					# todo: raise TypeError or something
 					logging.verbose('Invalid Content-Type for "%s": %s', url, resp.content_type)
-					return logging.debug('Response: %s', await resp.read())
+					logging.debug('Response: %s', await resp.read())
+					return None
 
 				logging.debug('%s >> resp %s', url, message.to_json(4))
 
@@ -140,11 +141,13 @@ class HttpClient:
 		except (AsyncTimeoutError, ClientConnectionError):
 			logging.verbose('Failed to connect to %s', urlparse(url).netloc)
 
-		except Exception as e:
+		except Exception:
 			traceback.print_exc()
 
+		return None
 
-	async def post(self, url, message):
+
+	async def post(self, url: str, message: Message) -> None:
 		await self.open()
 
 		instance = self.database.get_inbox(url)
@@ -165,10 +168,12 @@ class HttpClient:
 			async with self._session.post(url, headers=headers, data=message.to_json()) as resp:
 				## Not expecting a response, so just return
 				if resp.status in {200, 202}:
-					return logging.verbose('Successfully sent "%s" to %s', message.type, url)
+					logging.verbose('Successfully sent "%s" to %s', message.type, url)
+					return
 
 				logging.verbose('Received error when pushing to %s: %i', url, resp.status)
-				return logging.verbose(await resp.read()) # change this to debug
+				logging.debug(await resp.read())
+				return
 
 		except ClientSSLError:
 			logging.warning('SSL error when pushing to %s', urlparse(url).netloc)
@@ -177,12 +182,11 @@ class HttpClient:
 			logging.warning('Failed to connect to %s for message push', urlparse(url).netloc)
 
 		## prevent workers from being brought down
-		except Exception as e:
+		except Exception:
 			traceback.print_exc()
 
 
-	## Additional methods ##
-	async def fetch_nodeinfo(self, domain):
+	async def fetch_nodeinfo(self, domain: str) -> Nodeinfo | None:
 		nodeinfo_url = None
 		wk_nodeinfo = await self.get(
 			f'https://{domain}/.well-known/nodeinfo',
@@ -191,7 +195,7 @@ class HttpClient:
 
 		if not wk_nodeinfo:
 			logging.verbose('Failed to fetch well-known nodeinfo url for %s', domain)
-			return False
+			return None
 
 		for version in ['20', '21']:
 			try:
@@ -202,21 +206,21 @@ class HttpClient:
 
 		if not nodeinfo_url:
 			logging.verbose('Failed to fetch nodeinfo url for %s', domain)
-			return False
+			return None
 
-		return await self.get(nodeinfo_url, loads=Nodeinfo.parse) or False
+		return await self.get(nodeinfo_url, loads = Nodeinfo.parse) or None
 
 
-async def get(database, *args, **kwargs):
+async def get(database: RelayDatabase, *args: Any, **kwargs: Any) -> Message | dict | None:
 	async with HttpClient(database) as client:
 		return await client.get(*args, **kwargs)
 
 
-async def post(database, *args, **kwargs):
+async def post(database: RelayDatabase, *args: Any, **kwargs: Any) -> None:
 	async with HttpClient(database) as client:
 		return await client.post(*args, **kwargs)
 
 
-async def fetch_nodeinfo(database, *args, **kwargs):
+async def fetch_nodeinfo(database: RelayDatabase, *args: Any, **kwargs: Any) -> Nodeinfo | None:
 	async with HttpClient(database) as client:
 		return await client.fetch_nodeinfo(*args, **kwargs)

relay/logger.py

@@ -1,10 +1,16 @@
+from __future__ import annotations
+
 import logging
 import os
+import typing
 
 from pathlib import Path
 
+if typing.TYPE_CHECKING:
+	from typing import Any, Callable
 
-LOG_LEVELS = {
+
+LOG_LEVELS: dict[str, int] = {
 	'DEBUG': logging.DEBUG,
 	'VERBOSE': 15,
 	'INFO': logging.INFO,
@@ -14,14 +20,14 @@ LOG_LEVELS = {
 }
 
 
-debug = logging.debug
-info = logging.info
-warning = logging.warning
-error = logging.error
-critical = logging.critical
+debug: Callable = logging.debug
+info: Callable = logging.info
+warning: Callable = logging.warning
+error: Callable = logging.error
+critical: Callable = logging.critical
 
 
-def verbose(message, *args, **kwargs):
+def verbose(message: str, *args: Any, **kwargs: Any) -> None:
 	if not logging.root.isEnabledFor(LOG_LEVELS['VERBOSE']):
 		return
 

relay/manage.py

@@ -1,7 +1,10 @@
+from __future__ import annotations
+
 import Crypto
 import asyncio
 import click
 import platform
+import typing
 
 from urllib.parse import urlparse
 
@@ -10,6 +13,12 @@ from . import http_client as http
 from .application import Application
 from .config import RELAY_SOFTWARE
 
+if typing.TYPE_CHECKING:
+	from typing import Any
+
+
+# pylint: disable=unsubscriptable-object,unsupported-assignment-operation
+
 
 app = None
 CONFIG_IGNORE = {'blocked_software', 'blocked_instances', 'whitelist'}
@@ -19,7 +28,7 @@ CONFIG_IGNORE = {'blocked_software', 'blocked_instances', 'whitelist'}
 @click.option('--config', '-c', default='relay.yaml', help='path to the relay\'s config')
 @click.version_option(version=__version__, prog_name='ActivityRelay')
 @click.pass_context
-def cli(ctx, config):
+def cli(ctx: click.Context, config: str) -> None:
 	global app
 	app = Application(config)
 
@@ -32,11 +41,14 @@ def cli(ctx, config):
 
 
 @cli.command('setup')
-def cli_setup():
+def cli_setup() -> None:
 	'Generate a new config'
 
 	while True:
-		app.config.host = click.prompt('What domain will the relay be hosted on?', default=app.config.host)
+		app.config.host = click.prompt(
+			'What domain will the relay be hosted on?',
+			default = app.config.host
+		)
 
 		if not app.config.host.endswith('example.com'):
 			break
@@ -44,10 +56,18 @@ def cli_setup():
 		click.echo('The domain must not be example.com')
 
 	if not app.config.is_docker:
-		app.config.listen = click.prompt('Which address should the relay listen on?', default=app.config.listen)
+		app.config.listen = click.prompt(
+			'Which address should the relay listen on?',
+			default = app.config.listen
+		)
 
 		while True:
-			app.config.port = click.prompt('What TCP port should the relay listen on?', default=app.config.port, type=int)
+			app.config.port = click.prompt(
+				'What TCP port should the relay listen on?',
+				default = app.config.port,
+				type = int
+			)
+
 			break
 
 	app.config.save()
@@ -57,39 +77,47 @@ def cli_setup():
 
 
 @cli.command('run')
-def cli_run():
+def cli_run() -> None:
 	'Run the relay'
 
 	if app.config.host.endswith('example.com'):
-		return click.echo('Relay is not set up. Please edit your relay config or run "activityrelay setup".')
+		click.echo(
+			'Relay is not set up. Please edit your relay config or run "activityrelay setup".'
+		)
+
+		return
 
 	vers_split = platform.python_version().split('.')
 	pip_command = 'pip3 uninstall pycrypto && pip3 install pycryptodome'
 
 	if Crypto.__version__ == '2.6.1':
 		if int(vers_split[1]) > 7:
-			click.echo('Error: PyCrypto is broken on Python 3.8+. Please replace it with pycryptodome before running again. Exiting...')
-			return click.echo(pip_command)
+			click.echo(
+				'Error: PyCrypto is broken on Python 3.8+. Please replace it with pycryptodome ' +
+				'before running again. Exiting...'
+			)
+
+			click.echo(pip_command)
+			return
 
-		else:
 		click.echo('Warning: PyCrypto is old and should be replaced with pycryptodome')
-			return click.echo(pip_command)
+		click.echo(pip_command)
+		return
 
 	if not misc.check_open_port(app.config.listen, app.config.port):
-		return click.echo(f'Error: A server is already running on port {app.config.port}')
+		click.echo(f'Error: A server is already running on port {app.config.port}')
+		return
 
 	app.run()
 
 
-# todo: add config default command for resetting config key
 @cli.group('config')
-def cli_config():
+def cli_config() -> None:
 	'Manage the relay config'
-	pass
 
 
 @cli_config.command('list')
-def cli_config_list():
+def cli_config_list() -> None:
 	'List the current relay config'
 
 	click.echo('Relay Config:')
@@ -103,7 +131,7 @@ def cli_config_list():
 @cli_config.command('set')
 @click.argument('key')
 @click.argument('value')
-def cli_config_set(key, value):
+def cli_config_set(key: str, value: Any) -> None:
 	'Set a config value'
 
 	app.config[key] = value
@@ -113,13 +141,12 @@ def cli_config_set(key, value):
 
 
 @cli.group('inbox')
-def cli_inbox():
+def cli_inbox() -> None:
 	'Manage the inboxes in the database'
-	pass
 
 
 @cli_inbox.command('list')
-def cli_inbox_list():
+def cli_inbox_list() -> None:
 	'List the connected instances or relays'
 
 	click.echo('Connected to the following instances or relays:')
@@ -130,11 +157,12 @@ def cli_inbox_list():
 
 @cli_inbox.command('follow')
 @click.argument('actor')
-def cli_inbox_follow(actor):
+def cli_inbox_follow(actor: str) -> None:
 	'Follow an actor (Relay must be running)'
 
 	if app.config.is_banned(actor):
-		return click.echo(f'Error: Refusing to follow banned actor: {actor}')
+		click.echo(f'Error: Refusing to follow banned actor: {actor}')
+		return
 
 	if not actor.startswith('http'):
 		domain = actor
@@ -151,7 +179,8 @@ def cli_inbox_follow(actor):
 		actor_data = asyncio.run(http.get(app.database, actor, sign_headers=True))
 
 		if not actor_data:
-			return click.echo(f'Failed to fetch actor: {actor}')
+			click.echo(f'Failed to fetch actor: {actor}')
+			return
 
 		inbox = actor_data.shared_inbox
 
@@ -166,7 +195,7 @@ def cli_inbox_follow(actor):
 
 @cli_inbox.command('unfollow')
 @click.argument('actor')
-def cli_inbox_unfollow(actor):
+def cli_inbox_unfollow(actor: str) -> None:
 	'Unfollow an actor (Relay must be running)'
 
 	if not actor.startswith('http'):
@@ -204,17 +233,19 @@ def cli_inbox_unfollow(actor):
 
 @cli_inbox.command('add')
 @click.argument('inbox')
-def cli_inbox_add(inbox):
+def cli_inbox_add(inbox: str) -> None:
 	'Add an inbox to the database'
 
 	if not inbox.startswith('http'):
 		inbox = f'https://{inbox}/inbox'
 
 	if app.config.is_banned(inbox):
-		return click.echo(f'Error: Refusing to add banned inbox: {inbox}')
+		click.echo(f'Error: Refusing to add banned inbox: {inbox}')
+		return
 
 	if app.database.get_inbox(inbox):
-		return click.echo(f'Error: Inbox already in database: {inbox}')
+		click.echo(f'Error: Inbox already in database: {inbox}')
+		return
 
 	app.database.add_inbox(inbox)
 	app.database.save()
@@ -224,7 +255,7 @@ def cli_inbox_add(inbox):
 
 @cli_inbox.command('remove')
 @click.argument('inbox')
-def cli_inbox_remove(inbox):
+def cli_inbox_remove(inbox: str) -> None:
 	'Remove an inbox from the database'
 
 	try:
@@ -241,13 +272,12 @@ def cli_inbox_remove(inbox):
 
 
 @cli.group('instance')
-def cli_instance():
+def cli_instance() -> None:
 	'Manage instance bans'
-	pass
 
 
 @cli_instance.command('list')
-def cli_instance_list():
+def cli_instance_list() -> None:
 	'List all banned instances'
 
 	click.echo('Banned instances or relays:')
@@ -258,7 +288,7 @@ def cli_instance_list():
 
 @cli_instance.command('ban')
 @click.argument('target')
-def cli_instance_ban(target):
+def cli_instance_ban(target: str) -> None:
 	'Ban an instance and remove the associated inbox if it exists'
 
 	if target.startswith('http'):
@@ -278,7 +308,7 @@ def cli_instance_ban(target):
 
 @cli_instance.command('unban')
 @click.argument('target')
-def cli_instance_unban(target):
+def cli_instance_unban(target: str) -> None:
 	'Unban an instance'
 
 	if app.config.unban_instance(target):
@@ -291,13 +321,12 @@ def cli_instance_unban(target):
 
 
 @cli.group('software')
-def cli_software():
+def cli_software() -> None:
 	'Manage banned software'
-	pass
 
 
 @cli_software.command('list')
-def cli_software_list():
+def cli_software_list() -> None:
 	'List all banned software'
 
 	click.echo('Banned software:')
@@ -307,19 +336,21 @@ def cli_software_list():
 
 
 @cli_software.command('ban')
-@click.option('--fetch-nodeinfo/--ignore-nodeinfo', '-f', 'fetch_nodeinfo', default=False,
+@click.option(
+	'--fetch-nodeinfo/--ignore-nodeinfo', '-f', 'fetch_nodeinfo', default = False,
 	help = 'Treat NAME like a domain and try to fet the software name from nodeinfo'
 )
 @click.argument('name')
-def cli_software_ban(name, fetch_nodeinfo):
+def cli_software_ban(name: str, fetch_nodeinfo: bool) -> None:
 	'Ban software. Use RELAYS for NAME to ban relays'
 
 	if name == 'RELAYS':
-		for name in RELAY_SOFTWARE:
-			app.config.ban_software(name)
+		for software in RELAY_SOFTWARE:
+			app.config.ban_software(software)
 
 		app.config.save()
-		return click.echo('Banned all relay software')
+		click.echo('Banned all relay software')
+		return
 
 	if fetch_nodeinfo:
 		nodeinfo = asyncio.run(http.fetch_nodeinfo(app.database, name))
@@ -331,25 +362,28 @@ def cli_software_ban(name, fetch_nodeinfo):
 
 	if app.config.ban_software(name):
 		app.config.save()
-		return click.echo(f'Banned software: {name}')
+		click.echo(f'Banned software: {name}')
+		return
 
 	click.echo(f'Software already banned: {name}')
 
 
 @cli_software.command('unban')
-@click.option('--fetch-nodeinfo/--ignore-nodeinfo', '-f', 'fetch_nodeinfo', default=False,
+@click.option(
+	'--fetch-nodeinfo/--ignore-nodeinfo', '-f', 'fetch_nodeinfo', default = False,
 	help = 'Treat NAME like a domain and try to fet the software name from nodeinfo'
 )
 @click.argument('name')
-def cli_software_unban(name, fetch_nodeinfo):
+def cli_software_unban(name: str, fetch_nodeinfo: bool) -> None:
 	'Ban software. Use RELAYS for NAME to unban relays'
 
 	if name == 'RELAYS':
-		for name in RELAY_SOFTWARE:
-			app.config.unban_software(name)
+		for software in RELAY_SOFTWARE:
+			app.config.unban_software(software)
 
 		app.config.save()
-		return click.echo('Unbanned all relay software')
+		click.echo('Unbanned all relay software')
+		return
 
 	if fetch_nodeinfo:
 		nodeinfo = asyncio.run(http.fetch_nodeinfo(app.database, name))
@@ -361,19 +395,19 @@ def cli_software_unban(name, fetch_nodeinfo):
 
 	if app.config.unban_software(name):
 		app.config.save()
-		return click.echo(f'Unbanned software: {name}')
+		click.echo(f'Unbanned software: {name}')
+		return
 
 	click.echo(f'Software wasn\'t banned: {name}')
 
 
 @cli.group('whitelist')
-def cli_whitelist():
+def cli_whitelist() -> None:
 	'Manage the instance whitelist'
-	pass
 
 
 @cli_whitelist.command('list')
-def cli_whitelist_list():
+def cli_whitelist_list() -> None:
 	'List all the instances in the whitelist'
 
 	click.echo('Current whitelisted domains')
@@ -384,11 +418,12 @@ def cli_whitelist_list():
 
 @cli_whitelist.command('add')
 @click.argument('instance')
-def cli_whitelist_add(instance):
+def cli_whitelist_add(instance: str) -> None:
 	'Add an instance to the whitelist'
 
 	if not app.config.add_whitelist(instance):
-		return click.echo(f'Instance already in the whitelist: {instance}')
+		click.echo(f'Instance already in the whitelist: {instance}')
+		return
 
 	app.config.save()
 	click.echo(f'Instance added to the whitelist: {instance}')
@@ -396,11 +431,12 @@ def cli_whitelist_add(instance):
 
 @cli_whitelist.command('remove')
 @click.argument('instance')
-def cli_whitelist_remove(instance):
+def cli_whitelist_remove(instance: str) -> None:
 	'Remove an instance from the whitelist'
 
 	if not app.config.del_whitelist(instance):
-		return click.echo(f'Instance not in the whitelist: {instance}')
+		click.echo(f'Instance not in the whitelist: {instance}')
+		return
 
 	app.config.save()
 
@@ -412,14 +448,15 @@ def cli_whitelist_remove(instance):
 
 
 @cli_whitelist.command('import')
-def cli_whitelist_import():
+def cli_whitelist_import() -> None:
 	'Add all current inboxes to the whitelist'
 
 	for domain in app.database.hostnames:
 		cli_whitelist_add.callback(domain)
 
 
-def main():
+def main() -> None:
+	# pylint: disable=no-value-for-parameter
 	cli(prog_name='relay')
 
 

relay/misc.py

@@ -12,20 +12,21 @@ from aiohttp.web_exceptions import HTTPMethodNotAllowed
 from aputils.errors import SignatureFailureError
 from aputils.misc import Digest, HttpDate, Signature
 from aputils.message import Message as ApMessage
-from datetime import datetime
 from functools import cached_property
 from json.decoder import JSONDecodeError
-from urllib.parse import urlparse
 from uuid import uuid4
 
 from . import logger as logging
 
 if typing.TYPE_CHECKING:
-	from typing import Coroutine, Generator
+	from typing import Any, Coroutine, Generator, Optional, Type
+	from aputils.signer import Signer
+	from .application import Application
+	from .config import RelayConfig
+	from .database import RelayDatabase
+	from .http_client import HttpClient
 
 
-app = None
-
 MIMETYPES = {
 	'activity': 'application/activity+json',
 	'html': 'text/html',
@@ -39,43 +40,32 @@ NODEINFO_NS = {
 }
 
 
-def set_app(new_app):
-	global app
-	app = new_app
-
-
-def boolean(value):
+def boolean(value: Any) -> bool:
 	if isinstance(value, str):
 		if value.lower() in ['on', 'y', 'yes', 'true', 'enable', 'enabled', '1']:
 			return True
 
-		elif value.lower() in ['off', 'n', 'no', 'false', 'disable', 'disable', '0']:
+		if value.lower() in ['off', 'n', 'no', 'false', 'disable', 'disable', '0']:
 			return False
 
-		else:
 		raise TypeError(f'Cannot parse string "{value}" as a boolean')
 
-	elif isinstance(value, int):
+	if isinstance(value, int):
 		if value == 1:
 			return True
 
-		elif value == 0:
+		if value == 0:
 			return False
 
-		else:
 		raise ValueError('Integer value must be 1 or 0')
 
-	elif value == None:
+	if value is None:
 		return False
 
-	try:
-		return value.__bool__()
-
-	except AttributeError:
-		raise TypeError(f'Cannot convert object of type "{clsname(value)}"')
+	return bool(value)
 
 
-def check_open_port(host, port):
+def check_open_port(host: str, port: int) -> bool:
 	if host == '0.0.0.0':
 		host = '127.0.0.1'
 
@@ -83,50 +73,54 @@ def check_open_port(host, port):
 		try:
 			return s.connect_ex((host, port)) != 0
 
-		except socket.error as e:
+		except socket.error:
 			return False
 
 
 class DotDict(dict):
-	def __init__(self, _data, **kwargs):
+	def __init__(self, _data: dict[str, Any], **kwargs: Any):
 		dict.__init__(self)
 
 		self.update(_data, **kwargs)
 
 
-	def __getattr__(self, k):
+	def __getattr__(self, key: str) -> str:
 		try:
-			return self[k]
+			return self[key]
 
 		except KeyError:
-			raise AttributeError(f'{self.__class__.__name__} object has no attribute {k}') from None
+			raise AttributeError(
+				f'{self.__class__.__name__} object has no attribute {key}'
+			) from None
 
 
-	def __setattr__(self, k, v):
-		if k.startswith('_'):
-			super().__setattr__(k, v)
+	def __setattr__(self, key: str, value: Any) -> None:
+		if key.startswith('_'):
+			super().__setattr__(key, value)
 
 		else:
-			self[k] = v
+			self[key] = value
 
 
-	def __setitem__(self, k, v):
-		if type(v) == dict:
-			v = DotDict(v)
+	def __setitem__(self, key: str, value: Any) -> None:
+		if type(value) is dict:  # pylint: disable=unidiomatic-typecheck
+			value = DotDict(value)
 
-		super().__setitem__(k, v)
+		super().__setitem__(key, value)
 
 
-	def __delattr__(self, k):
+	def __delattr__(self, key: str) -> None:
 		try:
-			dict.__delitem__(self, k)
+			dict.__delitem__(self, key)
 
 		except KeyError:
-			raise AttributeError(f'{self.__class__.__name__} object has no attribute {k}') from None
+			raise AttributeError(
+				f'{self.__class__.__name__} object has no attribute {key}'
+			) from None
 
 
 	@classmethod
-	def new_from_json(cls, data):
+	def new_from_json(cls: Type[DotDict], data: dict[str, Any]) -> DotDict[str, Any]:
 		if not data:
 			raise JSONDecodeError('Empty body', data, 1)
 
@@ -134,11 +128,11 @@ class DotDict(dict):
 			return cls(json.loads(data))
 
 		except ValueError:
-			raise JSONDecodeError('Invalid body', data, 1)
+			raise JSONDecodeError('Invalid body', data, 1) from None
 
 
 	@classmethod
-	def new_from_signature(cls, sig):
+	def new_from_signature(cls: Type[DotDict], sig: str) -> DotDict[str, Any]:
 		data = cls({})
 
 		for chunk in sig.strip().split(','):
@@ -153,11 +147,11 @@ class DotDict(dict):
 		return data
 
 
-	def to_json(self, indent=None):
+	def to_json(self, indent: Optional[int | str] = None) -> str:
 		return json.dumps(self, indent=indent)
 
 
-	def update(self, _data, **kwargs):
+	def update(self, _data: dict[str, Any], **kwargs: Any) -> None:
 		if isinstance(_data, dict):
 			for key, value in _data.items():
 				self[key] = value
@@ -172,7 +166,11 @@ class DotDict(dict):
 
 class Message(ApMessage):
 	@classmethod
-	def new_actor(cls, host, pubkey, description=None):
+	def new_actor(cls: Type[Message],  # pylint: disable=arguments-differ
+				host: str,
+				pubkey: str,
+				description: Optional[str] = None) -> Message:
+
 		return cls({
 			'@context': 'https://www.w3.org/ns/activitystreams',
 			'id': f'https://{host}/actor',
@@ -196,19 +194,19 @@ class Message(ApMessage):
 
 
 	@classmethod
-	def new_announce(cls, host, object):
+	def new_announce(cls: Type[Message], host: str, obj: str) -> Message:
 		return cls({
 			'@context': 'https://www.w3.org/ns/activitystreams',
 			'id': f'https://{host}/activities/{uuid4()}',
 			'type': 'Announce',
 			'to': [f'https://{host}/followers'],
 			'actor': f'https://{host}/actor',
-			'object': object
+			'object': obj
 		})
 
 
 	@classmethod
-	def new_follow(cls, host, actor):
+	def new_follow(cls: Type[Message], host: str, actor: str) -> Message:
 		return cls({
 			'@context': 'https://www.w3.org/ns/activitystreams',
 			'type': 'Follow',
@@ -220,7 +218,7 @@ class Message(ApMessage):
 
 
 	@classmethod
-	def new_unfollow(cls, host, actor, follow):
+	def new_unfollow(cls: Type[Message], host: str, actor: str, follow: str) -> Message:
 		return cls({
 			'@context': 'https://www.w3.org/ns/activitystreams',
 			'id': f'https://{host}/activities/{uuid4()}',
@@ -232,7 +230,12 @@ class Message(ApMessage):
 
 
 	@classmethod
-	def new_response(cls, host, actor, followid, accept):
+	def new_response(cls: Type[Message],
+					host: str,
+					actor: str,
+					followid: str,
+					accept: bool) -> Message:
+
 		return cls({
 			'@context': 'https://www.w3.org/ns/activitystreams',
 			'id': f'https://{host}/activities/{uuid4()}',
@@ -250,7 +253,12 @@ class Message(ApMessage):
 
 class Response(AiohttpResponse):
 	@classmethod
-	def new(cls, body='', status=200, headers=None, ctype='text'):
+	def new(cls: Type[Response],
+			body: Optional[str | bytes | dict] = '',
+			status: Optional[int] = 200,
+			headers: Optional[dict[str, str]] = None,
+			ctype: Optional[str] = 'text') -> Response:
+
 		kwargs = {
 			'status': status,
 			'headers': headers,
@@ -270,7 +278,11 @@ class Response(AiohttpResponse):
 
 
 	@classmethod
-	def new_error(cls, status, body, ctype='text'):
+	def new_error(cls: Type[Response],
+				status: int,
+				body: str | bytes | dict,
+				ctype: str = 'text') -> Response:
+
 		if ctype == 'json':
 			body = json.dumps({'status': status, 'error': body})
 
@@ -278,12 +290,12 @@ class Response(AiohttpResponse):
 
 
 	@property
-	def location(self):
+	def location(self) -> str:
 		return self.headers.get('Location')
 
 
 	@location.setter
-	def location(self, value):
+	def location(self, value: str) -> None:
 		self.headers['Location'] = value
 
 
@@ -295,6 +307,7 @@ class View(AbstractView):
 		self.message: Message = None
 		self.actor: Message = None
 		self.instance: dict[str, str] = None
+		self.signer: Signer = None
 
 
 	def __await__(self) -> Generator[Response]:
@@ -335,7 +348,7 @@ class View(AbstractView):
 
 
 	@property
-	def client(self) -> Client:
+	def client(self) -> HttpClient:
 		return self.app.client
 
 
@@ -377,9 +390,9 @@ class View(AbstractView):
 		self.actor = await self.client.get(self.signature.keyid, sign_headers = True)
 
 		if self.actor is None:
-			## ld signatures aren't handled atm, so just ignore it
+			# ld signatures aren't handled atm, so just ignore it
 			if self.message.type == 'Delete':
-				logging.verbose(f'Instance sent a delete which cannot be handled')
+				logging.verbose('Instance sent a delete which cannot be handled')
 				return Response.new(status=202)
 
 			logging.verbose(f'Failed to fetch actor: {self.signature.keyid}')
@@ -429,5 +442,5 @@ class View(AbstractView):
 			headers["(expires)"] = self.signature.expires
 
 		# pylint: disable=protected-access
-		if not self.actor.signer._validate_signature(headers, self.signature):
+		if not self.signer._validate_signature(headers, self.signature):
 			raise SignatureFailureError("Signature does not match")

relay/processors.py

@@ -1,10 +1,8 @@
 from __future__ import annotations
 
-import asyncio
 import typing
 
 from cachetools import LRUCache
-from uuid import uuid4
 
 from . import logger as logging
 from .misc import Message
@@ -16,8 +14,8 @@ if typing.TYPE_CHECKING:
 cache = LRUCache(1024)
 
 
-def person_check(actor, software):
-	## pleroma and akkoma may use Person for the actor type for some reason
+def person_check(actor: str, software: str) -> bool:
+	# pleroma and akkoma may use Person for the actor type for some reason
 	if software in {'akkoma', 'pleroma'} and actor.id == f'https://{actor.domain}/relay':
 		return False
 
@@ -25,21 +23,19 @@ def person_check(actor, software):
 	if actor.type != 'Application':
 		return True
 
+	return False
+
 
 async def handle_relay(view: View) -> None:
 	if view.message.objectid in cache:
 		logging.verbose('already relayed %s', view.message.objectid)
 		return
 
-	message = Message.new_announce(
-		host = view.config.host,
-		object = view.message.objectid
-	)
-
+	message = Message.new_announce(view.config.host, view.message.objectid)
 	cache[view.message.objectid] = message.id
 	logging.debug('>> relay: %s', message)
 
-	inboxes = view.database.distill_inboxes(message)
+	inboxes = view.database.distill_inboxes(view.message)
 
 	for inbox in inboxes:
 		view.app.push_message(inbox, message)
@@ -50,15 +46,11 @@ async def handle_forward(view: View) -> None:
 		logging.verbose('already forwarded %s', view.message.id)
 		return
 
-	message = Message.new_announce(
-		host = view.config.host,
-		object = view.message
-	)
-
+	message = Message.new_announce(view.config.host, view.message)
 	cache[view.message.id] = message.id
 	logging.debug('>> forward: %s', message)
 
-	inboxes = view.database.distill_inboxes(message.message)
+	inboxes = view.database.distill_inboxes(view.message)
 
 	for inbox in inboxes:
 		view.app.push_message(inbox, message)
@@ -162,7 +154,7 @@ processors = {
 }
 
 
-async def run_processor(view: View):
+async def run_processor(view: View) -> None:
 	if view.message.type not in processors:
 		logging.verbose(
 			'Message type "%s" from actor cannot be handled: %s',
@@ -180,4 +172,4 @@ async def run_processor(view: View):
 			view.database.save()
 
 	logging.verbose('New "%s" from actor: %s', view.message.type, view.actor.id)
-	return await processors[view.message.type](view)
+	await processors[view.message.type](view)

relay/views.py

@@ -1,15 +1,13 @@
 from __future__ import annotations
 
-import aputils
 import asyncio
 import subprocess
-import traceback
 import typing
 
 from aputils.objects import Nodeinfo, Webfinger, WellKnownNodeinfo
 from pathlib import Path
 
-from . import __version__, misc
+from . import __version__
 from . import logger as logging
 from .misc import Message, Response, View
 from .processors import run_processor
@@ -35,8 +33,16 @@ HOME_TEMPLATE = """
 	<body>
 	<p>This is an Activity Relay for fediverse instances.</p>
 	<p>{note}</p>
-	<p>You may subscribe to this relay with the address: <a href="https://{host}/actor">https://{host}/actor</a></p>
-	<p>To host your own relay, you may download the code at this address: <a href="https://git.pleroma.social/pleroma/relay">https://git.pleroma.social/pleroma/relay</a></p>
+	<p>
+		You may subscribe to this relay with the address:
+		<a href="https://{host}/actor">https://{host}/actor</a>
+	</p>
+	<p>
+		To host your own relay, you may download the code at this address:
+		<a href="https://git.pleroma.social/pleroma/relay">
+			https://git.pleroma.social/pleroma/relay
+		</a>
+	</p>
 	<br><p>List of {count} registered instances:<br>{targets}</p>
 	</body></html>
 """
@@ -60,6 +66,8 @@ def register_route(*paths: str) -> Callable:
 	return wrapper
 
 
+# pylint: disable=unused-argument
+
 @register_route('/')
 class HomeView(View):
 	async def get(self, request: Request) -> Response:
@@ -140,14 +148,14 @@ class WebfingerView(View):
 @register_route('/nodeinfo/{niversion:\\d.\\d}.json', '/nodeinfo/{niversion:\\d.\\d}')
 class NodeinfoView(View):
 	async def get(self, request: Request, niversion: str) -> Response:
-		data = dict(
-			name = 'activityrelay',
-			version = VERSION,
-			protocols = ['activitypub'],
-			open_regs = not self.config.whitelist_enabled,
-			users = 1,
-			metadata = {'peers': self.database.hostnames}
-		)
+		data = {
+			'name': 'activityrelay',
+			'version': VERSION,
+			'protocols': ['activitypub'],
+			'open_regs': not self.config.whitelist_enabled,
+			'users': 1,
+			'metadata': {'peers': self.database.hostnames}
+		}
 
 		if niversion == '2.1':
 			data['repo'] = 'https://git.pleroma.social/pleroma/relay'