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pvv-nixos-config/hosts/bicep/services/matrix/smtp-authenticator/smtp_auth_provider.py

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from typing import Awaitable, Callable, Optional, Tuple
from smtplib import SMTP_SSL as SMTP
import synapse
from synapse import module_api
import re
import logging
logger = logging.getLogger(__name__)
class SMTPAuthProvider:
def __init__(self, config: dict, api: module_api):
self.api = api
self.config = config
api.register_password_auth_provider_callbacks(
auth_checkers={
("m.login.password", ("password",)): self.check_pass,
},
)
async def check_pass(
self,
username: str,
login_type: str,
login_dict: "synapse.module_api.JsonDict",
):
if login_type != "m.login.password":
return None
# Convert `@username:server` to `username`
match = re.match(r'^@([\da-z\-\.=_\/\+]+):[\w\d\.:\[\]]+$', username)
username = match.group(1) if match else username
result = False
with SMTP(self.config["smtp_host"]) as smtp:
password = login_dict.get("password")
try:
smtp.login(username, password)
result = True
except:
return None
if result == True:
userid = self.api.get_qualified_user_id(username)
userid = await self.api.check_user_exists(userid)
if not userid:
logger.info(f"user did not exist, registering {username}")
userid = await self.api.register_user(username)
logger.info(f"registered userid: {userid}")
return (userid, None)
else:
logger.info("returning None")
return None