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#!/usr/bin/env python3
import argparse
import os
import re
import subprocess
from pathlib import Path, PurePath
def main():
ap = argparse.ArgumentParser()
ap.add_argument("--destdir", default="/", type=Path)
ap.add_argument("--confdir", type=PurePath)
ap.add_argument("--statedir", type=PurePath)
ap.add_argument("--bindir", type=PurePath)
ap.add_argument("--datadir", type=PurePath)
ap.add_argument("--unitdir", type=PurePath)
ap.add_argument("--sysusersdir", type=PurePath)
ap.add_argument("--is-systemd", action="store_true", default=None)
ap.add_argument("--no-run", action="store_true")
ap.add_argument("prefix", choices=["home", "system", "usr", "usr/local"])
vals = ap.parse_args()
if not vals.destdir.is_absolute():
raise ValueError(f"destdir={destdir} must be absolute")
if vals.is_systemd is None:
vals.is_systemd = "systemd" in str(Path("/sbin/init").resolve())
conf = vars(vals)
for key, val in list(conf.items()):
if val is None:
del conf[key]
if vals.prefix == "home":
user = os.env["USER"]
confdir = conf.setdefault("confdir", PurePath(f"home/{user}/.config/jwebmail"))
statedir = conf.setdefault(
"statedir", PurePath(f"home/{user}/.local/state/jwebmail")
)
bindir = conf.setdefault("bindir", PurePath(f"home/{user}/.local/bin"))
datadir = conf.setdefault(
"datadir", PurePath(f"home/{user}/.local/share/jwebmail")
)
unitdir = conf.setdefault(
"unitdir", PurePath(f"home/{user}/.config/systemd/user")
)
sysusersdir = None
(vals.destdir / confdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir).mkdir(0o700, exist_ok=True)
(vals.destdir / datadir).mkdir(0o755, exist_ok=True)
elif vals.prefix == "system":
confdir = conf.setdefault("confdir", PurePath("etc/jwebmail"))
statedir = conf.setdefault("statedir", PurePath("var/jwebmail"))
bindir = conf.setdefault("bindir", PurePath("usr/bin"))
datadir = conf.setdefault("datadir", PurePath("usr/share/jwebmail"))
unitdir = conf.setdefault("unitdir", PurePath("etc/systemd/system"))
sysusersdir = conf.setdefault("sysusersdir", PurePath("etc/sysusers.d"))
(vals.destdir / confdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir.parent).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir).mkdir(0o750, exist_ok=True)
(vals.destdir / datadir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / unitdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / sysusersdir).mkdir(0o755, exist_ok=True, parents=True)
elif vals.prefix == "usr":
confdir = conf.setdefault("confdir", PurePath("etc/jwebmail"))
statedir = conf.setdefault("statedir", PurePath("var/lib/jwebmail"))
bindir = conf.setdefault("bindir", PurePath("usr/bin"))
datadir = conf.setdefault("datadir", PurePath("usr/share/jwebmail"))
unitdir = conf.setdefault("unitdir", PurePath("usr/lib/systemd/system"))
sysusersdir = conf.setdefault("sysusersdir", PurePath("usr/lib/sysusers.d"))
(vals.destdir / confdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir.parent).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir).mkdir(0o750, exist_ok=True)
(vals.destdir / datadir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / unitdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / sysusersdir).mkdir(0o755, exist_ok=True, parents=True)
elif vals.prefix == "usr/local":
confdir = conf.setdefault("confdir", PurePath("usr/local/etc/jwebmail"))
statedir = conf.setdefault("statedir", PurePath("var/local/lib/jwebmail"))
bindir = conf.setdefault("bindir", PurePath("usr/local/bin"))
datadir = conf.setdefault("datadir", PurePath("usr/local/share/jwebmail"))
unitdir = conf.setdefault("unitdir", PurePath("usr/local/lib/systemd/system"))
sysusersdir = conf.setdefault(
"sysusersdir", PurePath("usr/local/lib/sysusers.d")
)
(vals.destdir / confdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir.parent).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / statedir).mkdir(0o750, exist_ok=True)
(vals.destdir / datadir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / unitdir).mkdir(0o755, exist_ok=True, parents=True)
(vals.destdir / sysusersdir).mkdir(0o755, exist_ok=True, parents=True)
else:
raise ValueError(
"first arg <prefix> must be one of `home`, `system`, `usr` or `usr/local`"
)
try:
if vals.is_systemd:
install_service_unit(
"script/jwebmail.service.in",
vals.destdir / unitdir,
str(vals.destdir / confdir),
str(vals.destdir / bindir),
vals.no_run,
)
if vals.is_systemd and vals.prefix != "home":
install_jwebmail_user(
"script/jwebmail.conf.in",
vals.destdir / sysusersdir,
str(vals.destdir / statedir),
vals.no_run,
)
except subprocess.CalledProcessError:
os.exit("A command failed to execute. Is systemd installed? Try running with `--no-run`.")
def substitute_file(in_file, out_path, variables):
in_file_content = open(in_file).read()
out_file_content = re.sub(
r"@(\w+)@", lambda match: variables[match[1]], in_file_content, flags=re.ASCII
)
open(out_path / Path(in_file).name.removesuffix(".in"), mode="w").write(
out_file_content
)
def install_jwebmail_user(in_file, out_path, statedir, no_run):
substitute_file(
in_file,
out_path,
dict(STATEDIR=statedir),
)
if not no_run:
subprocess.run("systemd-sysusers", check=True)
def install_service_unit(in_file, out_path, confdir, bindir):
substitute_file(
in_file,
out_path,
dict(CONFDIR=confdir, BINDIR=bindir),
)
if not no_run:
subprocess.run(["systemctl", "daemon-reload"], check=True)
if __name__ == "__main__":
main()
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