263 lines
9.8 KiB
Python
Executable File
263 lines
9.8 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'), 0o600)
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def migration_6(env):
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# We now will generate multiple DNSSEC keys for different algorithms, since TLDs may
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# not support them all. .email only supports RSA/SHA-256. Rename the keys.conf file
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# to be algorithm-specific.
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basepath = os.path.join(env["STORAGE_ROOT"], 'dns/dnssec')
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shutil.move(os.path.join(basepath, 'keys.conf'), os.path.join(basepath, 'RSASHA1-NSEC3-SHA1.conf'))
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def migration_7(env):
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# I previously wanted domain names to be stored in Unicode in the database. Now I want them
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# to be in IDNA. Affects aliases only.
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import sqlite3
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conn = sqlite3.connect(os.path.join(env["STORAGE_ROOT"], "mail/users.sqlite"))
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# Get existing alias source addresses.
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c = conn.cursor()
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c.execute('SELECT source FROM aliases')
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aliases = [ row[0] for row in c.fetchall() ]
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# Update to IDNA-encoded domains.
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for email in aliases:
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try:
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localpart, domainpart = email.split("@")
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domainpart = domainpart.encode("idna").decode("ascii")
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newemail = localpart + "@" + domainpart
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if newemail != email:
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c = conn.cursor()
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c.execute("UPDATE aliases SET source=? WHERE source=?", (newemail, email))
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if c.rowcount != 1: raise ValueError("Alias not found.")
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print("Updated alias", email, "to", newemail)
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except Exception as e:
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print("Error updating IDNA alias", email, e)
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# Save.
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conn.commit()
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def migration_8(env):
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# Delete DKIM keys. We had generated 1024-bit DKIM keys.
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# By deleting the key file we'll automatically generate
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# a new key, which will be 2048 bits.
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os.unlink(os.path.join(env['STORAGE_ROOT'], 'mail/dkim/mail.private'))
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def migration_9(env):
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# Add a column to the aliases table to store permitted_senders,
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# which is a list of user account email addresses that are
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# permitted to send mail using this alias instead of their own
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# address. This was motivated by the addition of #427 ("Reject
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# outgoing mail if FROM does not match Login") - which introduced
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# the notion of outbound permitted-senders.
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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 aliases ADD permitted_senders TEXT"])
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def migration_10(env):
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# Clean up the SSL certificates directory.
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# Move the primary certificate to a new name and then
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# symlink it to the system certificate path.
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import datetime
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system_certificate = os.path.join(env["STORAGE_ROOT"], 'ssl/ssl_certificate.pem')
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if not os.path.islink(system_certificate): # not already a symlink
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new_path = os.path.join(env["STORAGE_ROOT"], 'ssl', env['PRIMARY_HOSTNAME'] + "-" + datetime.datetime.now().date().isoformat().replace("-", "") + ".pem")
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print("Renamed", system_certificate, "to", new_path, "and created a symlink for the original location.")
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shutil.move(system_certificate, new_path)
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os.symlink(new_path, system_certificate)
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# Flatten the directory structure. For any directory
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# that contains a single file named ssl_certificate.pem,
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# move the file out and name it the same as the directory,
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# and remove the directory.
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for sslcert in glob.glob(os.path.join( env["STORAGE_ROOT"], 'ssl/*/ssl_certificate.pem' )):
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d = os.path.dirname(sslcert)
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if len(os.listdir(d)) == 1:
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# This certificate is the only file in that directory.
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newname = os.path.join(env["STORAGE_ROOT"], 'ssl', os.path.basename(d) + '.pem')
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if not os.path.exists(newname):
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shutil.move(sslcert, newname)
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os.rmdir(d)
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def migration_11(env):
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# Archive the old Let's Encrypt account directory managed by free_tls_certificates
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# because we'll use that path now for the directory managed by certbot.
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try:
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old_path = os.path.join(env["STORAGE_ROOT"], 'ssl', 'lets_encrypt')
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new_path = os.path.join(env["STORAGE_ROOT"], 'ssl', 'lets_encrypt-old')
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shutil.move(old_path, new_path)
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except:
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# meh
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pass
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def migration_12(env):
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# Upgrading to Carddav Roundcube plugin to version 3+, it requires the carddav_*
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# tables to be dropped.
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# Checking that the roundcube database already exists.
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if os.path.exists(os.path.join(env["STORAGE_ROOT"], "mail/roundcube/roundcube.sqlite")):
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import sqlite3
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conn = sqlite3.connect(os.path.join(env["STORAGE_ROOT"], "mail/roundcube/roundcube.sqlite"))
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c = conn.cursor()
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# Get a list of all the tables that begin with 'carddav_'
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c.execute("SELECT name FROM sqlite_master WHERE type = ? AND name LIKE ?", ('table', 'carddav_%'))
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carddav_tables = c.fetchall()
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# If there were tables that begin with 'carddav_', drop them
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if carddav_tables:
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for table in carddav_tables:
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try:
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table = table[0]
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c = conn.cursor()
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dropcmd = "DROP TABLE %s" % table
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c.execute(dropcmd)
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except:
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print("Failed to drop table", table, e)
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# Save.
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conn.commit()
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conn.close()
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# Delete all sessions, requring users to login again to recreate carddav_*
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# databases
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conn = sqlite3.connect(os.path.join(env["STORAGE_ROOT"], "mail/roundcube/roundcube.sqlite"))
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c = conn.cursor()
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c.execute("delete from session;")
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conn.commit()
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conn.close()
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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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migration_id = None
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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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migration_id = f.read().strip()
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if migration_id is None:
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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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migration_id = env.get("MIGRATIONID")
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if migration_id is None:
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print()
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print("%s file doesn't exists. Skipping migration..." % (migration_id_file,))
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return
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ourver = int(migration_id)
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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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