mailinabox/setup/migrate.py

78 lines
2.4 KiB
Python
Executable File

#!/usr/bin/python3
# Migrates any file structures, database schemas, etc. between versions of Mail-in-a-Box.
# We have to be careful here that any dependencies are already installed in the previous
# version since this script runs before all other aspects of the setup script.
import sys, os, os.path, glob, re, shutil
sys.path.insert(0, 'management')
from utils import load_environment, save_environment, safe_domain_name
def migration_1(env):
# Re-arrange where we store SSL certificates. There was a typo also.
def move_file(fn, domain_name_escaped, filename):
# Moves an SSL-related file into the right place.
fn1 = os.path.join( env["STORAGE_ROOT"], 'ssl', domain_name_escaped, file_type)
os.makedirs(os.path.dirname(fn1), exist_ok=True)
shutil.move(fn, fn1)
# Migrate the 'domains' directory.
for sslfn in glob.glob(os.path.join( env["STORAGE_ROOT"], 'ssl/domains/*' )):
fn = os.path.basename(sslfn)
m = re.match("(.*)_(certifiate.pem|cert_sign_req.csr|private_key.pem)$", fn)
if m:
# get the new name for the file
domain_name, file_type = m.groups()
if file_type == "certifiate.pem": file_type = "ssl_certificate.pem" # typo
if file_type == "cert_sign_req.csr": file_type = "certificate_signing_request.csr" # nicer
move_file(sslfn, domain_name, file_type)
# Move the old domains directory if it is now empty.
try:
os.rmdir(os.path.join( env["STORAGE_ROOT"], 'ssl/domains'))
except:
pass
if __name__ == "__main__":
if not os.access("/etc/mailinabox.conf", os.W_OK, effective_ids=True):
print("This script must be run as root.", file=sys.stderr)
sys.exit(1)
env = load_environment()
ourver = int(env.get("MIGRATIONID", "0"))
while True:
next_ver = (ourver + 1)
migration_func = globals().get("migration_%d" % next_ver)
if not migration_func:
# No more migrations to run.
break
print("Running migration to Mail-in-a-Box #%d..." % next_ver)
try:
migration_func(env)
except Exception as e:
print()
print("Error running the migration script:")
print()
print(e)
print()
print("Your system may be in an inconsistent state now. We're terribly sorry. A re-install from a backup might be the best way to continue.")
sys.exit(1)
ourver = next_ver
# Write out our current version now. Do this sooner rather than later
# in case of any problems.
env["MIGRATIONID"] = ourver
save_environment(env)
# iterate and try next version...