132 lines
4.4 KiB
Python
Executable File
132 lines
4.4 KiB
Python
Executable File
#!/usr/bin/python3
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# Migrates any file structures, database schemas, etc. between versions of Mail-in-a-Box.
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# We have to be careful here that any dependencies are already installed in the previous
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# version since this script runs before all other aspects of the setup script.
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import sys, os, os.path, glob, re, shutil
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sys.path.insert(0, 'management')
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from utils import load_environment, save_environment, shell
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def migration_1(env):
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# Re-arrange where we store SSL certificates. There was a typo also.
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def move_file(fn, domain_name_escaped, filename):
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# Moves an SSL-related file into the right place.
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fn1 = os.path.join( env["STORAGE_ROOT"], 'ssl', domain_name_escaped, file_type)
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os.makedirs(os.path.dirname(fn1), exist_ok=True)
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shutil.move(fn, fn1)
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# Migrate the 'domains' directory.
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for sslfn in glob.glob(os.path.join( env["STORAGE_ROOT"], 'ssl/domains/*' )):
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fn = os.path.basename(sslfn)
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m = re.match("(.*)_(certifiate.pem|cert_sign_req.csr|private_key.pem)$", fn)
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if m:
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# get the new name for the file
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domain_name, file_type = m.groups()
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if file_type == "certifiate.pem": file_type = "ssl_certificate.pem" # typo
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if file_type == "cert_sign_req.csr": file_type = "certificate_signing_request.csr" # nicer
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move_file(sslfn, domain_name, file_type)
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# Move the old domains directory if it is now empty.
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try:
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os.rmdir(os.path.join( env["STORAGE_ROOT"], 'ssl/domains'))
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except:
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pass
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def migration_2(env):
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# Delete the .dovecot_sieve script everywhere. This was formerly a copy of our spam -> Spam
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# script. We now install it as a global script, and we use managesieve, so the old file is
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# irrelevant. Also delete the compiled binary form.
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for fn in glob.glob(os.path.join(env["STORAGE_ROOT"], 'mail/mailboxes/*/*/.dovecot.sieve')):
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os.unlink(fn)
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for fn in glob.glob(os.path.join(env["STORAGE_ROOT"], 'mail/mailboxes/*/*/.dovecot.svbin')):
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os.unlink(fn)
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def migration_3(env):
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# Move the migration ID from /etc/mailinabox.conf to $STORAGE_ROOT/mailinabox.version
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# so that the ID stays with the data files that it describes the format of. The writing
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# of the file will be handled by the main function.
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pass
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def migration_4(env):
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# Add a new column to the mail users table where we can store administrative privileges.
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db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
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shell("check_call", ["sqlite3", db, "ALTER TABLE users ADD privileges TEXT NOT NULL DEFAULT ''"])
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def migration_5(env):
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# The secret key for encrypting backups was world readable. Fix here.
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os.chmod(os.path.join(env["STORAGE_ROOT"], 'backup/secret_key.txt'), 600)
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def get_current_migration():
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ver = 0
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while True:
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next_ver = (ver + 1)
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migration_func = globals().get("migration_%d" % next_ver)
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if not migration_func:
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return ver
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ver = next_ver
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def run_migrations():
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if not os.access("/etc/mailinabox.conf", os.W_OK, effective_ids=True):
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print("This script must be run as root.", file=sys.stderr)
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sys.exit(1)
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env = load_environment()
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migration_id_file = os.path.join(env['STORAGE_ROOT'], 'mailinabox.version')
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if os.path.exists(migration_id_file):
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with open(migration_id_file) as f:
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ourver = int(f.read().strip())
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else:
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# Load the legacy location of the migration ID. We'll drop support
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# for this eventually.
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ourver = int(env.get("MIGRATIONID", "0"))
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while True:
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next_ver = (ourver + 1)
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migration_func = globals().get("migration_%d" % next_ver)
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if not migration_func:
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# No more migrations to run.
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break
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print()
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print("Running migration to Mail-in-a-Box #%d..." % next_ver)
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try:
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migration_func(env)
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except Exception as e:
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print()
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print("Error running the migration script:")
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print()
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print(e)
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print()
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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.")
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sys.exit(1)
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ourver = next_ver
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# Write out our current version now. Do this sooner rather than later
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# in case of any problems.
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with open(migration_id_file, "w") as f:
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f.write(str(ourver) + "\n")
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# Delete the legacy location of this field.
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if "MIGRATIONID" in env:
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del env["MIGRATIONID"]
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save_environment(env)
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# iterate and try next version...
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if __name__ == "__main__":
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if sys.argv[-1] == "--current":
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# Return the number of the highest migration.
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print(str(get_current_migration()))
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elif sys.argv[-1] == "--migrate":
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# Perform migrations.
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run_migrations()
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