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"""
MeshBay Hub — email sending via localhost Postfix.
Postfix listens on loopback only (inet_interfaces = loopback-only), so no
authentication is needed. See docs/MAIL-SERVER.md for the full setup.
"""
import logging
import smtplib
from email.message import EmailMessage
log = logging.getLogger(__name__)
_hub_domain: str = "meshbay.org"
_hub_url: str = "https://meshbay.org"
def configure(hub_id: str) -> None:
global _hub_domain, _hub_url
_hub_domain = hub_id
_hub_url = f"https://{hub_id}"
def _send(msg: EmailMessage) -> bool:
try:
with smtplib.SMTP("localhost", 25, timeout=10) as s:
s.send_message(msg)
return True
except Exception:
log.exception("Failed to send email to %s", msg["To"])
return False
def send_verification_code(to: str, code: str) -> None:
msg = EmailMessage()
msg["From"] = f"noreply@{_hub_domain}"
msg["To"] = to
msg["Subject"] = f"MeshBay — Your verification code: {code}"
msg.set_content(
f"Your verification code is: {code}\n"
"\n"
"Enter this code to verify your email address.\n"
"This code expires in 24 hours.\n"
"\n"
"If you did not create a MeshBay account, ignore this email.\n"
"\n"
f"{_hub_url}\n"
)
_send(msg)
log.info("Verification code sent to %s", _mask_email(to))
def send_email_change_code(to: str, code: str) -> None:
msg = EmailMessage()
msg["From"] = f"noreply@{_hub_domain}"
msg["To"] = to
msg["Subject"] = f"MeshBay — Confirm your new email: {code}"
msg.set_content(
f"Your verification code is: {code}\n"
"\n"
"Enter this code to confirm your new email address.\n"
"This code expires in 24 hours.\n"
"\n"
"If you did not request this change, ignore this email.\n"
"\n"
f"{_hub_url}\n"
)
_send(msg)
log.info("Email change code sent to %s", _mask_email(to))
def send_invite_notification(
to: str, code: str, inviter: str, group_name: str,
) -> None:
msg = EmailMessage()
msg["From"] = f"noreply@{_hub_domain}"
msg["To"] = to
msg["Subject"] = f"MeshBay — {inviter} invited you to {group_name}"
msg.set_content(
f"{inviter} invited you to the group \"{group_name}\" on MeshBay.\n"
"\n"
f"Your one-time code is: {code}\n"
"\n"
"Open the group and enter this code when prompted.\n"
"The code works once and expires in 7 days.\n"
"\n"
f"{_hub_url}\n"
)
_send(msg)
log.info("Invite notification sent to %s", _mask_email(to))
def _mask_email(email: str) -> str:
local, _, domain = email.partition("@")
if len(local) <= 2:
return f"{'*' * len(local)}@{domain}"
return f"{local[0]}{'*' * (len(local) - 2)}{local[-1]}@{domain}"
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