Move automatically generated aliases to a separate database table
They really should never have been conflated with the user-provided aliases. Update the postfix alias map to query the automatically generated aliases with lowest priority.
This commit is contained in:
Joshua Tauberer
parent
79966e36e3
commit
11e84d0d40
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@ -235,7 +235,7 @@ def mail_aliases():
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if request.args.get("format", "") == "json":
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return json_response(get_mail_aliases_ex(env))
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else:
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return "".join(address+"\t"+receivers+"\t"+(senders or "")+"\n" for address, receivers, senders in get_mail_aliases(env))
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return "".join(address+"\t"+receivers+"\t"+(senders or "")+"\n" for address, receivers, senders, auto in get_mail_aliases(env))
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@app.route('/mail/aliases/add', methods=['POST'])
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@authorized_personnel_only
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@ -186,9 +186,9 @@ def get_admins(env):
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return users
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def get_mail_aliases(env):
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# Returns a sorted list of tuples of (address, forward-tos, permitted-senders).
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# Returns a sorted list of tuples of (address, forward-tos, permitted-senders, auto).
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c = open_database(env)
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c.execute('SELECT source, destination, permitted_senders FROM aliases')
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c.execute('SELECT source, destination, permitted_senders, 0 as auto FROM aliases UNION SELECT source, destination, permitted_senders, 1 as auto FROM auto_aliases')
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aliases = { row[0]: row for row in c.fetchall() } # make dict
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# put in a canonical order: sort by domain, then by email address lexicographically
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@ -208,7 +208,7 @@ def get_mail_aliases_ex(env):
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# address_display: "name@domain.tld", # full Unicode
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# forwards_to: ["user1@domain.com", "receiver-only1@domain.com", ...],
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# permitted_senders: ["user1@domain.com", "sender-only1@domain.com", ...] OR null,
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# required: True|False
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# auto: True|False
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# },
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# ...
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# ]
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@ -216,12 +216,10 @@ def get_mail_aliases_ex(env):
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# ...
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# ]
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required_aliases = get_required_aliases(env)
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domains = {}
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for address, forwards_to, permitted_senders in get_mail_aliases(env):
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for address, forwards_to, permitted_senders, auto in get_mail_aliases(env):
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# get alias info
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domain = get_domain(address)
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required = (address in required_aliases)
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# add to list
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if not domain in domains:
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@ -234,7 +232,7 @@ def get_mail_aliases_ex(env):
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"address_display": prettify_idn_email_address(address),
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"forwards_to": [prettify_idn_email_address(r.strip()) for r in forwards_to.split(",")],
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"permitted_senders": [prettify_idn_email_address(s.strip()) for s in permitted_senders.split(",")] if permitted_senders is not None else None,
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"required": required,
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"auto": bool(auto),
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})
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# Sort domains.
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@ -242,7 +240,7 @@ def get_mail_aliases_ex(env):
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# Sort aliases within each domain first by required-ness then lexicographically by address.
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for domain in domains:
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domain["aliases"].sort(key = lambda alias : (alias["required"], alias["address"]))
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domain["aliases"].sort(key = lambda alias : (alias["auto"], alias["address"]))
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return domains
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def get_domain(emailaddr, as_unicode=True):
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@ -512,6 +510,13 @@ def remove_mail_alias(address, env, do_kick=True):
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# Update things in case any domains are removed.
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return kick(env, "alias removed")
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def add_auto_aliases(aliases, env):
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conn, c = open_database(env, with_connection=True)
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c.execute("DELETE FROM auto_aliases");
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for source, destination in aliases.items():
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c.execute("INSERT INTO auto_aliases (source, destination) VALUES (?, ?)", (source, destination))
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conn.commit()
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def get_system_administrator(env):
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return "administrator@" + env['PRIMARY_HOSTNAME']
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@ -555,39 +560,26 @@ def kick(env, mail_result=None):
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if mail_result is not None:
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results.append(mail_result + "\n")
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# Ensure every required alias exists.
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auto_aliases = { }
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existing_users = get_mail_users(env)
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existing_alias_records = get_mail_aliases(env)
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existing_aliases = set(a for a, *_ in existing_alias_records) # just first entry in tuple
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# Mape required aliases to the administrator alias (which should be created manually).
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administrator = get_system_administrator(env)
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required_aliases = get_required_aliases(env)
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for alias in required_aliases:
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if alias == administrator: continue # don't make an alias from the administrator to itself --- this alias must be created manually
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auto_aliases[alias] = administrator
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def ensure_admin_alias_exists(address):
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# If a user account exists with that address, we're good.
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if address in existing_users:
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return
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# If the alias already exists, we're good.
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if address in existing_aliases:
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return
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add_auto_aliases(auto_aliases, env)
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# Doesn't exist.
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administrator = get_system_administrator(env)
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if address == administrator: return # don't make an alias from the administrator to itself --- this alias must be created manually
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add_mail_alias(address, administrator, "", env, do_kick=False)
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if administrator not in existing_aliases: return # don't report the alias in output if the administrator alias isn't in yet -- this is a hack to supress confusing output on initial setup
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results.append("added alias %s (=> %s)\n" % (address, administrator))
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for address in required_aliases:
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ensure_admin_alias_exists(address)
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# Remove auto-generated postmaster/admin on domains we no
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# longer have any other email addresses for.
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for address, forwards_to, *_ in existing_alias_records:
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# Remove auto-generated postmaster/admin/abuse alises from the main aliases table.
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# They are now stored in the auto_aliases table.
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for address, forwards_to, permitted_senders, auto in get_mail_aliases(env):
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user, domain = address.split("@")
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if user in ("postmaster", "admin", "abuse") \
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and address not in required_aliases \
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and forwards_to == get_system_administrator(env):
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and forwards_to == get_system_administrator(env) \
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and not auto:
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remove_mail_alias(address, env, do_kick=False)
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results.append("removed alias %s (was to %s; domain no longer used for email)\n" % (address, forwards_to))
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@ -1,6 +1,6 @@
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<style>
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#alias_table .actions > * { padding-right: 3px; }
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#alias_table .alias-required .remove { display: none }
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#alias_table .alias-auto .actions > * { display: none }
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</style>
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<h2>Aliases</h2>
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@ -163,7 +163,7 @@ function show_aliases() {
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var n = $("#alias-template").clone();
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n.attr('id', '');
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if (alias.required) n.addClass('alias-required');
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if (alias.auto) n.addClass('alias-auto');
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n.attr('data-address', alias.address_display); // this is decoded from IDNA, but will get re-coded to IDNA on the backend
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n.find('td.address').text(alias.address_display)
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for (var j = 0; j < alias.forwards_to.length; j++)
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@ -23,6 +23,7 @@ if [ ! -f $db_path ]; then
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echo "CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT, email TEXT NOT NULL UNIQUE, password TEXT NOT NULL, extra, privileges TEXT NOT NULL DEFAULT '');" | sqlite3 $db_path;
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echo "CREATE TABLE aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);" | sqlite3 $db_path;
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echo "CREATE TABLE mfa (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id INTEGER NOT NULL, type TEXT NOT NULL, secret TEXT NOT NULL, mru_token TEXT, label TEXT, FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE);" | sqlite3 $db_path;
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echo "CREATE TABLE auto_aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);" | sqlite3 $db_path;
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fi
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# ### User Authentication
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@ -145,7 +146,7 @@ EOF
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# empty destination here so that other lower priority rules might match.
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cat > /etc/postfix/virtual-alias-maps.cf << EOF;
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dbpath=$db_path
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query = SELECT destination from (SELECT destination, 0 as priority FROM aliases WHERE source='%s' AND destination<>'' UNION SELECT email as destination, 1 as priority FROM users WHERE email='%s') ORDER BY priority LIMIT 1;
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query = SELECT destination from (SELECT destination, 0 as priority FROM aliases WHERE source='%s' AND destination<>'' UNION SELECT email as destination, 1 as priority FROM users WHERE email='%s' UNION SELECT destination, 2 as priority FROM auto_aliases WHERE source='%s' AND destination<>'') ORDER BY priority LIMIT 1;
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EOF
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# Restart Services
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@ -186,6 +186,11 @@ def migration_13(env):
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db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
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shell("check_call", ["sqlite3", db, "CREATE TABLE mfa (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id INTEGER NOT NULL, type TEXT NOT NULL, secret TEXT NOT NULL, mru_token TEXT, label TEXT, FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE);"])
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def migration_14(env):
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# Add the "auto_aliases" table.
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db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
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shell("check_call", ["sqlite3", db, "CREATE TABLE auto_aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);"])
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###########################################################
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def get_current_migration():
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