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Mailu/admin/mailu/certbot.py
2017-02-12 16:58:58 +01:00

72 lines
2.3 KiB
Python

from mailu import app, scheduler, dockercli
import subprocess
import os
def certbot_command(subcommand, *args):
""" Run a certbot command while specifying the standard parameters.
"""
command = [
"certbot", subcommand,
"-n",
"--work-dir", "/tmp",
"--logs-dir", "/tmp",
"--config-dir", app.config["CERTS_PATH"],
*args
]
result = subprocess.run(command, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
return result
def certbot_install(domain):
""" Install certificates for the given domain. Return True if a reload
is required.
"""
must_reload = False
path = app.config["CERTS_PATH"]
cert = os.path.join(path, "cert.pem")
key = os.path.join(path, "key.pem")
live_cert = os.path.join("live", domain, "fullchain.pem")
live_key = os.path.join("live", domain, "privkey.pem")
if not os.path.islink(cert) or os.readlink(cert) != live_cert:
must_reload = True
if os.path.exists(cert):
os.unlink(cert)
os.symlink(live_cert, cert)
if not os.path.islink(key) or os.readlink(key) != live_key:
must_reload = True
if os.path.exists(key):
os.unlink(key)
os.symlink(live_key, key)
return must_reload
@scheduler.scheduled_job('date')
@scheduler.scheduled_job('cron', hour=2, minute=0)
def generate_cert():
print("Generating TLS certificates using Certbot")
hostname = app.config["HOSTNAME"]
email = "{}@{}".format(app.config["POSTMASTER"], app.config["DOMAIN"])
result = certbot_command(
"certonly",
"--standalone",
"--agree-tos",
"--preferred-challenges", "http",
"--email", email,
"-d", hostname,
# The port is hardcoded in the nginx image as well, we should find
# a more suitable way to go but this will do until we have a proper
# daemon handling certbot stuff
"--http-01-port", "8081"
)
if result.returncode:
print("Error while generating certificates:\n{}".format(
result.stdout.decode("utf8") + result.stdout.decode("utf8")))
else:
print("Successfully generated or renewed TLS certificates")
if certbot_install(hostname):
print("Reloading TLS-dependant services")
dockercli.reload("http", "smtp", "imap")