fix(email): close SMTP and IMAP connections on failure (#3804)
SMTP connections in _send_email() and _send_email_with_attachment() leak when login() or send_message() raises before quit() is reached. Both now wrapped in try/finally with a close() fallback if quit() also fails. IMAP connection in _fetch_new_messages() leaks when UID processing raises, since logout() sits after the loop. Restructured with try/finally so logout() runs unconditionally. Co-authored-by: Himess <Himess@users.noreply.github.com>
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Teknium
@@ -337,60 +337,63 @@ class EmailAdapter(BasePlatformAdapter):
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results = []
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try:
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imap = imaplib.IMAP4_SSL(self._imap_host, self._imap_port, timeout=30)
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imap.login(self._address, self._password)
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imap.select("INBOX")
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try:
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imap.login(self._address, self._password)
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imap.select("INBOX")
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status, data = imap.uid("search", None, "UNSEEN")
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if status != "OK" or not data or not data[0]:
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imap.logout()
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return results
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status, data = imap.uid("search", None, "UNSEEN")
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if status != "OK" or not data or not data[0]:
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return results
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for uid in data[0].split():
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if uid in self._seen_uids:
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continue
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self._seen_uids.add(uid)
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# Trim periodically to prevent unbounded memory growth
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if len(self._seen_uids) > self._seen_uids_max:
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self._trim_seen_uids()
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for uid in data[0].split():
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if uid in self._seen_uids:
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continue
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self._seen_uids.add(uid)
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# Trim periodically to prevent unbounded memory growth
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if len(self._seen_uids) > self._seen_uids_max:
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self._trim_seen_uids()
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status, msg_data = imap.uid("fetch", uid, "(RFC822)")
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if status != "OK":
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continue
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status, msg_data = imap.uid("fetch", uid, "(RFC822)")
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if status != "OK":
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continue
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raw_email = msg_data[0][1]
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msg = email_lib.message_from_bytes(raw_email)
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raw_email = msg_data[0][1]
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msg = email_lib.message_from_bytes(raw_email)
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sender_raw = msg.get("From", "")
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sender_addr = _extract_email_address(sender_raw)
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sender_name = _decode_header_value(sender_raw)
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# Remove email from name if present
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if "<" in sender_name:
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sender_name = sender_name.split("<")[0].strip().strip('"')
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sender_raw = msg.get("From", "")
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sender_addr = _extract_email_address(sender_raw)
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sender_name = _decode_header_value(sender_raw)
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# Remove email from name if present
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if "<" in sender_name:
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sender_name = sender_name.split("<")[0].strip().strip('"')
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subject = _decode_header_value(msg.get("Subject", "(no subject)"))
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message_id = msg.get("Message-ID", "")
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in_reply_to = msg.get("In-Reply-To", "")
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# Skip automated/noreply senders before any processing
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msg_headers = dict(msg.items())
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if _is_automated_sender(sender_addr, msg_headers):
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logger.debug("[Email] Skipping automated sender: %s", sender_addr)
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continue
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body = _extract_text_body(msg)
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attachments = _extract_attachments(msg, skip_attachments=self._skip_attachments)
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subject = _decode_header_value(msg.get("Subject", "(no subject)"))
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message_id = msg.get("Message-ID", "")
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in_reply_to = msg.get("In-Reply-To", "")
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# Skip automated/noreply senders before any processing
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msg_headers = dict(msg.items())
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if _is_automated_sender(sender_addr, msg_headers):
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logger.debug("[Email] Skipping automated sender: %s", sender_addr)
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continue
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body = _extract_text_body(msg)
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attachments = _extract_attachments(msg, skip_attachments=self._skip_attachments)
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results.append({
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"uid": uid,
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"sender_addr": sender_addr,
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"sender_name": sender_name,
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"subject": subject,
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"message_id": message_id,
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"in_reply_to": in_reply_to,
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"body": body,
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"attachments": attachments,
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"date": msg.get("Date", ""),
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})
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imap.logout()
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results.append({
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"uid": uid,
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"sender_addr": sender_addr,
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"sender_name": sender_name,
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"subject": subject,
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"message_id": message_id,
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"in_reply_to": in_reply_to,
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"body": body,
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"attachments": attachments,
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"date": msg.get("Date", ""),
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})
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finally:
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try:
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imap.logout()
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except Exception:
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pass
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except Exception as e:
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logger.error("[Email] IMAP fetch error: %s", e)
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return results
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@@ -503,10 +506,15 @@ class EmailAdapter(BasePlatformAdapter):
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msg.attach(MIMEText(body, "plain", "utf-8"))
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smtp = smtplib.SMTP(self._smtp_host, self._smtp_port, timeout=30)
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smtp.starttls(context=ssl.create_default_context())
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smtp.login(self._address, self._password)
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smtp.send_message(msg)
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smtp.quit()
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try:
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smtp.starttls(context=ssl.create_default_context())
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smtp.login(self._address, self._password)
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smtp.send_message(msg)
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finally:
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try:
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smtp.quit()
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except Exception:
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smtp.close()
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logger.info("[Email] Sent reply to %s (subject: %s)", to_addr, subject)
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return msg_id
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@@ -590,10 +598,15 @@ class EmailAdapter(BasePlatformAdapter):
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msg.attach(part)
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smtp = smtplib.SMTP(self._smtp_host, self._smtp_port, timeout=30)
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smtp.starttls(context=ssl.create_default_context())
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smtp.login(self._address, self._password)
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smtp.send_message(msg)
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smtp.quit()
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try:
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smtp.starttls(context=ssl.create_default_context())
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smtp.login(self._address, self._password)
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smtp.send_message(msg)
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finally:
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try:
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smtp.quit()
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except Exception:
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smtp.close()
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return msg_id
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