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[mqtt] Fixed permission denied error for client certificates on Windows (#13525)

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Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
This commit is contained in:
Matthias König
2026-03-12 17:00:08 +01:00
committed by Jesse Hills
parent 440734dadf
commit da130c900f
1 changed files with 12 additions and 7 deletions
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19
esphome/mqtt.py
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@@ -2,6 +2,7 @@ import contextlib
from datetime import datetime
import json
import logging
import os
import ssl
import tempfile
import time
@@ -109,14 +110,18 @@ def prepare(
CONF_CLIENT_CERTIFICATE_KEY
):
with (
tempfile.NamedTemporaryFile(mode="w+") as cert_file,
tempfile.NamedTemporaryFile(mode="w+") as key_file,
tempfile.NamedTemporaryFile(mode="w+", delete=False) as cert_file,
tempfile.NamedTemporaryFile(mode="w+", delete=False) as key_file,
):
cert_file.write(config[CONF_MQTT].get(CONF_CLIENT_CERTIFICATE))
cert_file.flush()
key_file.write(config[CONF_MQTT].get(CONF_CLIENT_CERTIFICATE_KEY))
key_file.flush()
context.load_cert_chain(cert_file.name, key_file.name)
try:
cert_file.write(config[CONF_MQTT].get(CONF_CLIENT_CERTIFICATE))
key_file.write(config[CONF_MQTT].get(CONF_CLIENT_CERTIFICATE_KEY))
cert_file.close()
key_file.close()
context.load_cert_chain(cert_file.name, key_file.name)
finally:
os.unlink(cert_file.name)
os.unlink(key_file.name)
client.tls_set_context(context)
try: