typehint changes for python 3.8

mail4one/config.py

@@ -1,14 +1,14 @@
 import json
 import re
 import logging
-from typing import Callable, Union, Optional
+from typing import Callable, Union, Optional, List, Tuple
 from jata import Jata, MutableDefault
 
 
 class Match(Jata):
     name: str
-    addrs: list[str] = MutableDefault(lambda: [])  # type: ignore
+    addrs: List[str] = MutableDefault(lambda: [])  # type: ignore
-    addr_rexs: list[str] = MutableDefault(lambda: [])  # type: ignore
+    addr_rexs: List[str] = MutableDefault(lambda: [])  # type: ignore
 
 
 DEFAULT_MATCH_ALL = "default_match_all"
@@ -23,7 +23,7 @@ class Rule(Jata):
 
 class Mbox(Jata):
     name: str
-    rules: list[Rule]
+    rules: List[Rule]
 
 
 DEFAULT_NULL_MBOX = "default_null_mbox"
@@ -77,18 +77,18 @@ class Config(Jata):
     logging: Optional[LogCfg] = None
 
     mails_path: str
-    matches: list[Match]
+    matches: List[Match]
-    boxes: list[Mbox]
+    boxes: List[Mbox]
-    users: list[User]
+    users: List[User]
 
-    servers: list[ServerCfg]
+    servers: List[ServerCfg]
 
 
 CheckerFn = Callable[[str], bool]
-Checker = tuple[str, CheckerFn, bool]
+Checker = Tuple[str, CheckerFn, bool]
 
 
-def parse_checkers(cfg: Config) -> list[Checker]:
+def parse_checkers(cfg: Config) -> List[Checker]:
     def make_match_fn(m: Match):
         if m.addrs and m.addr_rexs:
             raise Exception("Both addrs and addr_rexs is set")
@@ -118,7 +118,7 @@ def parse_checkers(cfg: Config) -> list[Checker]:
     ]
 
 
-def get_mboxes(addr: str, checks: list[Checker]) -> list[str]:
+def get_mboxes(addr: str, checks: List[Checker]) -> List[str]:
     def inner():
         for mbox, match_fn, stop_check in checks:
             if match_fn(addr):
@@ -130,7 +130,7 @@ def get_mboxes(addr: str, checks: list[Checker]) -> list[str]:
     return list(inner())
 
 
-def gen_addr_to_mboxes(cfg: Config) -> Callable[[str], list[str]]:
+def gen_addr_to_mboxes(cfg: Config) -> Callable[[str], List[str]]:
     checks = parse_checkers(cfg)
     logging.info(f"Parsed checkers from config, {len(checks)=}")
     return lambda addr: get_mboxes(addr, checks)

mail4one/pop3.py

@@ -13,7 +13,7 @@ from .pwhash import parse_hash, check_pass, PWInfo
 from asyncio import StreamReader, StreamWriter
 import random
 
-from typing import Optional
+from typing import Optional, List, Tuple, Dict
 
 from .poputils import (
     InvalidCommand,
@@ -46,7 +46,7 @@ class State:
 
 
 class SharedState:
-    def __init__(self, mails_path: Path, users: dict[str, tuple[PWInfo, str]]):
+    def __init__(self, mails_path: Path, users: dict[str, Tuple[PWInfo, str]]):
         self.mails_path = mails_path
         self.users = users
         self.loggedin_users: set[str] = set()
@@ -237,7 +237,7 @@ def trans_command_noop(_, __) -> None:
     write(ok("Hmm"))
 
 
-async def process_transactions(mails_list: list[MailEntry]) -> set[str]:
+async def process_transactions(mails_list: List[MailEntry]) -> set[str]:
     mails = MailList(mails_list)
 
     def reset(_, __):
@@ -328,7 +328,7 @@ async def start_session() -> None:
             scfg().loggedin_users.remove(state().username)
 
 
-def parse_users(users: list[User]) -> dict[str, tuple[PWInfo, str]]:
+def parse_users(users: List[User]) -> Dict[str, Tuple[PWInfo, str]]:
     def inner():
         for user in users:
             user = User(user)
@@ -338,7 +338,7 @@ def parse_users(users: list[User]) -> dict[str, tuple[PWInfo, str]]:
     return dict(inner())
 
 
-def make_pop_server_callback(mails_path: Path, users: list[User], timeout_seconds: int):
+def make_pop_server_callback(mails_path: Path, users: List[User], timeout_seconds: int):
     scfg = SharedState(mails_path=mails_path, users=parse_users(users))
 
     async def session_cb(reader: StreamReader, writer: StreamWriter):
@@ -362,7 +362,7 @@ async def create_pop_server(
     host: str,
     port: int,
     mails_path: Path,
-    users: list[User],
+    users: List[User],
     ssl_context: Optional[ssl.SSLContext] = None,
     timeout_seconds: int = 60,
 ) -> asyncio.Server:

mail4one/poputils.py

@@ -2,6 +2,7 @@ import os
 from dataclasses import dataclass
 from enum import Enum, auto
 from pathlib import Path
+from typing import List
 
 
 class ClientError(Exception):
@@ -112,13 +113,13 @@ def files_in_path(path):
     return []
 
 
-def get_mails_list(dirpath: Path) -> list[MailEntry]:
+def get_mails_list(dirpath: Path) -> List[MailEntry]:
     files = files_in_path(dirpath)
     entries = [MailEntry(filename, path) for filename, path in files]
     return entries
 
 
-def set_nid(entries: list[MailEntry]):
+def set_nid(entries: List[MailEntry]):
     entries.sort(reverse=True, key=lambda e: (e.c_time, e.uid))
     for i, entry in enumerate(entries, start=1):
         entry.nid = i
@@ -130,7 +131,7 @@ def get_mail(entry: MailEntry) -> bytes:
 
 
 class MailList:
-    def __init__(self, entries: list[MailEntry]):
+    def __init__(self, entries: List[MailEntry]):
         self.entries = entries
         set_nid(self.entries)
         self.mails_map = {str(e.nid): e for e in entries}

mail4one/server.py

@@ -57,7 +57,7 @@ async def a_main(cfg: config.Config) -> None:
             return host
 
     mbox_finder = config.gen_addr_to_mboxes(cfg)
-    servers: list[asyncio.Server] = []
+    servers: List[asyncio.Server] = []
 
     if not cfg.servers:
         logging.warning("Nothing to do!")

mail4one/smtp.py

@@ -7,7 +7,7 @@ import uuid
 import shutil
 from functools import partial
 from pathlib import Path
-from typing import Callable, Optional
+from typing import Callable, Optional, List
 from . import config
 from email.message import Message
 import email.policy
@@ -25,7 +25,7 @@ logger = logging.getLogger("smtp")
 
 
 class MyHandler(AsyncMessage):
-    def __init__(self, mails_path: Path, mbox_finder: Callable[[str], list[str]]):
+    def __init__(self, mails_path: Path, mbox_finder: Callable[[str], List[str]]):
         super().__init__()
         self.mails_path = mails_path
         self.mbox_finder = mbox_finder
@@ -63,7 +63,7 @@ class MyHandler(AsyncMessage):
 
 
 def protocol_factory_starttls(
-    mails_path: Path, mbox_finder: Callable[[str], list[str]], context: ssl.SSLContext
+    mails_path: Path, mbox_finder: Callable[[str], List[str]], context: ssl.SSLContext
 ):
     logger.info("Got smtp client cb starttls")
     try:
@@ -80,7 +80,7 @@ def protocol_factory_starttls(
     return smtp
 
 
-def protocol_factory(mails_path: Path, mbox_finder: Callable[[str], list[str]]):
+def protocol_factory(mails_path: Path, mbox_finder: Callable[[str], List[str]]):
     logger.info("Got smtp client cb")
     try:
         handler = MyHandler(mails_path, mbox_finder)
@@ -95,9 +95,9 @@ async def create_smtp_server_starttls(
     host: str,
     port: int,
     mails_path: Path,
-    mbox_finder: Callable[[str], list[str]],
+    mbox_finder: Callable[[str], List[str]],
     ssl_context: ssl.SSLContext,
-) -> asyncio.Server:
+    ):
     logging.info(
         f"Starting SMTP STARTTLS server {host=}, {port=}, {mails_path=!s}, {ssl_context != None=}"
     )
@@ -114,9 +114,9 @@ async def create_smtp_server(
     host: str,
     port: int,
     mails_path: Path,
-    mbox_finder: Callable[[str], list[str]],
+    mbox_finder: Callable[[str], List[str]],
     ssl_context: Optional[ssl.SSLContext] = None,
-) -> asyncio.Server:
+    ):
     logging.info(
         f"Starting SMTP server {host=}, {port=}, {mails_path=!s}, {ssl_context != None=}"
     )