Files
relay/deploy-chatmail/src/deploy_chatmail/__init__.py

482 lines
14 KiB
Python

"""
Chat Mail pyinfra deploy.
"""
import sys
import importlib.resources
import subprocess
import shutil
import io
import configparser
from pathlib import Path
from pyinfra import host
from pyinfra.operations import apt, files, server, systemd, pip
from pyinfra.facts.files import File
from pyinfra.facts.systemd import SystemdEnabled
from .acmetool import deploy_acmetool
def _build_chatmaild(dist_dir) -> None:
dist_dir = Path(dist_dir).resolve()
if dist_dir.exists():
shutil.rmtree(dist_dir)
dist_dir.mkdir()
subprocess.check_output(
[sys.executable, "-m", "build", "-n"]
+ ["--sdist", "chatmaild", "--outdir", str(dist_dir)]
)
entries = list(dist_dir.iterdir())
assert len(entries) == 1
return entries[0]
def _install_remote_venv_with_chatmaild() -> None:
dist_file = _build_chatmaild(dist_dir=Path("chatmaild/dist"))
remote_base_dir = "/usr/local/lib/chatmaild"
remote_dist_file = f"{remote_base_dir}/dist/{dist_file.name}"
remote_venv_dir = f"{remote_base_dir}/venv"
root_owned = dict(user="root", group="root", mode="644")
apt.packages(
name="apt install python3-virtualenv",
packages=["python3-virtualenv"],
)
files.put(
name="Upload chatmaild source package",
src=dist_file.open("rb"),
dest=remote_dist_file,
create_remote_dir=True,
**root_owned,
)
pip.virtualenv(
name=f"chatmaild virtualenv {remote_venv_dir}",
path=remote_venv_dir,
always_copy=True,
)
server.shell(
name=f"forced pip-install {dist_file.name}",
commands=[
f"{remote_venv_dir}/bin/pip install --force-reinstall {remote_dist_file}"
],
)
# disable legacy doveauth-dictproxy.service
if host.get_fact(SystemdEnabled).get("doveauth-dictproxy.service"):
systemd.service(
name="Disable legacy doveauth-dictproxy.service",
service="doveauth-dictproxy.service",
running=False,
enabled=False,
)
# install systemd units
for fn in (
"doveauth",
"filtermail",
):
execpath = f"{remote_venv_dir}/bin/{fn}"
source_path = importlib.resources.files("chatmaild").joinpath(f"{fn}.service.f")
content = source_path.read_text().format(execpath=execpath).encode()
files.put(
name=f"Upload {fn}.service",
src=io.BytesIO(content),
dest=f"/etc/systemd/system/{fn}.service",
**root_owned,
)
systemd.service(
name=f"Setup {fn} service",
service=f"{fn}.service",
running=True,
enabled=True,
restarted=True,
daemon_reload=True,
)
def _configure_opendkim(domain: str, dkim_selector: str) -> bool:
"""Configures OpenDKIM"""
need_restart = False
main_config = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/opendkim.conf"),
dest="/etc/opendkim.conf",
user="root",
group="root",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= main_config.changed
files.directory(
name="Add opendkim directory to /etc",
path="/etc/opendkim",
user="opendkim",
group="opendkim",
mode="750",
present=True,
)
keytable = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/KeyTable"),
dest="/etc/dkimkeys/KeyTable",
user="opendkim",
group="opendkim",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= keytable.changed
signing_table = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/SigningTable"),
dest="/etc/dkimkeys/SigningTable",
user="opendkim",
group="opendkim",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= signing_table.changed
files.directory(
name="Add opendkim socket directory to /var/spool/postfix",
path="/var/spool/postfix/opendkim",
user="opendkim",
group="opendkim",
mode="750",
present=True,
)
if not host.get_fact(File, f"/etc/dkimkeys/{dkim_selector}.private"):
server.shell(
name="Generate OpenDKIM domain keys",
commands=[
f"opendkim-genkey -D /etc/dkimkeys -d {domain} -s {dkim_selector}"
],
_sudo=True,
_sudo_user="opendkim",
)
return need_restart
def _install_mta_sts_daemon() -> bool:
need_restart = False
config = files.put(
name="upload postfix-mta-sts-resolver config",
src=importlib.resources.files(__package__).joinpath(
"postfix/mta-sts-daemon.yml"
),
dest="/etc/mta-sts-daemon.yml",
user="root",
group="root",
mode="644",
)
need_restart |= config.changed
server.shell(
name="install postfix-mta-sts-resolver with pip",
commands=[
"python3 -m venv /usr/local/lib/postfix-mta-sts-resolver",
"/usr/local/lib/postfix-mta-sts-resolver/bin/pip install postfix-mta-sts-resolver",
],
)
systemd_unit = files.put(
name="upload mta-sts-daemon systemd unit",
src=importlib.resources.files(__package__).joinpath(
"postfix/mta-sts-daemon.service"
),
dest="/etc/systemd/system/mta-sts-daemon.service",
user="root",
group="root",
mode="644",
)
need_restart |= systemd_unit.changed
return need_restart
def _configure_postfix(domain: str, debug: bool = False) -> bool:
"""Configures Postfix SMTP server."""
need_restart = False
main_config = files.template(
src=importlib.resources.files(__package__).joinpath("postfix/main.cf.j2"),
dest="/etc/postfix/main.cf",
user="root",
group="root",
mode="644",
config={"domain_name": domain},
)
need_restart |= main_config.changed
master_config = files.template(
src=importlib.resources.files(__package__).joinpath("postfix/master.cf.j2"),
dest="/etc/postfix/master.cf",
user="root",
group="root",
mode="644",
debug=debug,
)
need_restart |= master_config.changed
return need_restart
def _configure_dovecot(mail_server: str, debug: bool = False) -> bool:
"""Configures Dovecot IMAP server."""
need_restart = False
main_config = files.template(
src=importlib.resources.files(__package__).joinpath("dovecot/dovecot.conf.j2"),
dest="/etc/dovecot/dovecot.conf",
user="root",
group="root",
mode="644",
config={"hostname": mail_server},
debug=debug,
)
need_restart |= main_config.changed
auth_config = files.put(
src=importlib.resources.files(__package__).joinpath("dovecot/auth.conf"),
dest="/etc/dovecot/auth.conf",
user="root",
group="root",
mode="644",
)
need_restart |= auth_config.changed
files.put(
src=importlib.resources.files(__package__)
.joinpath("dovecot/expunge.cron")
.open("rb"),
dest="/etc/cron.d/expunge",
user="root",
group="root",
mode="644",
)
# as per https://doc.dovecot.org/configuration_manual/os/
# it is recommended to set the following inotify limits
for name in ("max_user_instances", "max_user_watches"):
key = f"fs.inotify.{name}"
server.sysctl(
name=f"Change {key}",
key=key,
value=65535,
persist=True,
)
return need_restart
def _configure_nginx(domain: str, debug: bool = False) -> bool:
"""Configures nginx HTTP server."""
need_restart = False
main_config = files.template(
src=importlib.resources.files(__package__).joinpath("nginx/nginx.conf.j2"),
dest="/etc/nginx/nginx.conf",
user="root",
group="root",
mode="644",
config={"domain_name": domain},
)
need_restart |= main_config.changed
autoconfig = files.template(
src=importlib.resources.files(__package__).joinpath("nginx/autoconfig.xml.j2"),
dest="/var/www/html/.well-known/autoconfig/mail/config-v1.1.xml",
user="root",
group="root",
mode="644",
config={"domain_name": domain},
)
need_restart |= autoconfig.changed
mta_sts_config = files.template(
src=importlib.resources.files(__package__).joinpath("nginx/mta-sts.txt.j2"),
dest="/var/www/html/.well-known/mta-sts.txt",
user="root",
group="root",
mode="644",
config={"domain_name": domain},
)
need_restart |= mta_sts_config.changed
# install CGI newemail script
#
cgi_dir = "/usr/lib/cgi-bin"
files.directory(
name=f"Ensure {cgi_dir} exists",
path=cgi_dir,
user="root",
group="root",
)
files.put(
name="Upload cgi newemail.py script",
src=importlib.resources.files("chatmaild").joinpath("newemail.py").open("rb"),
dest=f"{cgi_dir}/newemail.py",
user="root",
group="root",
mode="755",
)
return need_restart
def get_ini_settings(mail_domain, inipath):
parser = configparser.ConfigParser()
parser.read(inipath)
settings = {key: value.strip() for (key, value) in parser["config"].items()}
if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"):
for value in settings.values():
value = value.lower()
if "merlinux" in value or "schmieder" in value or "@testrun.org" in value:
raise ValueError(
f"please set your own privacy contacts/addresses in {inipath}"
)
settings["mail_domain"] = mail_domain
return settings
def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> None:
"""Deploy a chat-mail instance.
:param mail_domain: domain part of your future email addresses
:param mail_server: the DNS name under which your mail server is reachable
:param dkim_selector:
"""
from .www import build_webpages
apt.update(name="apt update", cache_time=24 * 3600)
server.group(name="Create vmail group", group="vmail", system=True)
server.user(name="Create vmail user", user="vmail", group="vmail", system=True)
server.group(name="Create opendkim group", group="opendkim", system=True)
server.user(
name="Add postfix user to opendkim group for socket access",
user="postfix",
groups=["opendkim"],
system=True,
)
# Deploy acmetool to have TLS certificates.
deploy_acmetool(nginx_hook=True, domains=[mail_server, f"mta-sts.{mail_server}"])
apt.packages(
name="Install Postfix",
packages="postfix",
)
apt.packages(
name="Install Dovecot",
packages=["dovecot-imapd", "dovecot-lmtpd"],
)
apt.packages(
name="Install OpenDKIM",
packages=[
"opendkim",
"opendkim-tools",
],
)
apt.packages(
name="Install nginx",
packages=["nginx"],
)
apt.packages(
name="Install fcgiwrap",
packages=["fcgiwrap"],
)
pkg_root = importlib.resources.files(__package__)
chatmail_ini = pkg_root.joinpath("../../../chatmail.ini").resolve()
config = get_ini_settings(mail_domain, chatmail_ini)
www_path = pkg_root.joinpath("../../../www").resolve()
build_dir = www_path.joinpath("build")
src_dir = www_path.joinpath("src")
build_webpages(src_dir, build_dir, config)
files.rsync(f"{build_dir}/", "/var/www/html", flags=["-avz"])
_install_remote_venv_with_chatmaild()
debug = False
dovecot_need_restart = _configure_dovecot(mail_server, debug=debug)
postfix_need_restart = _configure_postfix(mail_domain, debug=debug)
opendkim_need_restart = _configure_opendkim(mail_domain, dkim_selector)
mta_sts_need_restart = _install_mta_sts_daemon()
nginx_need_restart = _configure_nginx(mail_domain)
systemd.service(
name="Start and enable OpenDKIM",
service="opendkim.service",
running=True,
enabled=True,
restarted=opendkim_need_restart,
)
systemd.service(
name="Start and enable MTA-STS daemon",
service="mta-sts-daemon.service",
daemon_reload=True,
running=True,
enabled=True,
restarted=mta_sts_need_restart,
)
systemd.service(
name="Start and enable Postfix",
service="postfix.service",
running=True,
enabled=True,
restarted=postfix_need_restart,
)
systemd.service(
name="Start and enable Dovecot",
service="dovecot.service",
running=True,
enabled=True,
restarted=dovecot_need_restart,
)
systemd.service(
name="Start and enable nginx",
service="nginx.service",
running=True,
enabled=True,
restarted=nginx_need_restart,
)
# This file is used by auth proxy.
# https://wiki.debian.org/EtcMailName
server.shell(
name="Setup /etc/mailname",
commands=[f"echo {mail_domain} >/etc/mailname; chmod 644 /etc/mailname"],
)
journald_conf = files.put(
name="Configure journald",
src=importlib.resources.files(__package__).joinpath("journald.conf"),
dest="/etc/systemd/journald.conf",
user="root",
group="root",
mode="644",
)
systemd.service(
name="Start and enable journald",
service="systemd-journald.service",
running=True,
enabled=True,
restarted=journald_conf,
)