Add possibility to add ALIAS DNS record (#51)

* Add possibility to add ALIAS DNS record

Added possibility to add ALIAS DNS record.

Resolves PROD-1918. (3/3)

ChangeLog:
* [ADD] Added possibility to add ALIAS DNS records

server/debian/atomiadns-database.postinst

@@ -269,7 +269,7 @@ if [ $retval != 0 ]; then
 		echo "database zonedata already exist, but doesn't contain the atomiadns schema. You will have to make sure that the schema matches $basedir/schema manually"
 		exit 1
 	else
-		latest_version="88"
+		latest_version="89"
 
 		if [ "$schema_version" = "$latest_version" ]; then
 			echo "The installed schema is the latest version, keeping the database as it is."
@@ -597,6 +597,10 @@ if [ $retval != 0 ]; then
 				execute_query "DROP TYPE _algorithmtype"
 			fi
 
+			if [ "$schema_version" -lt 89 ]; then
+				execute_query "INSERT INTO allowed_type (type, synopsis, regexp) VALUES ('ALIAS', 'hostname', '^[a-z0-9_][a-z0-9._-]*$')"
+			fi
+
 			set_schema_version "$latest_version"
 		else
 			echo "database zonedata already exist, but contains a bad schema version ($schema_version), this should never happen and indicates a bug."

server/schema/ddl.sql

@@ -39,7 +39,7 @@ CREATE TABLE atomiadns_schemaversion (
 	version INT
 );
 
-INSERT INTO atomiadns_schemaversion (version) VALUES (87);
+INSERT INTO atomiadns_schemaversion (version) VALUES (89);
 
 CREATE TABLE allow_zonetransfer (
         id SERIAL PRIMARY KEY NOT NULL,
@@ -91,7 +91,8 @@ INSERT INTO allowed_type (type, synopsis, regexp) VALUES
 ('SSHFP', 'algorithm fingerprinttype fingerprint', '^[0-9]+ [0-9]+ [0-9A-F]+$'),
 ('TLSA', 'usage selector type certificate', '^[0-9]+ [0-9]+ [0-9]+ [0-9A-F]+$'),
 ('TXT', 'quotedstring', '^"[^"]{0,255}"( "[^"]{0,255}")*$'),
-('CAA', 'certificate authority authorization', '^([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5]) (issue|issuewild|iodef) ("[^"]{0,255}")*$');
+('CAA', 'certificate authority authorization', '^([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5]) (issue|issuewild|iodef) ("[^"]{0,255}")*$'),
+('ALIAS', 'hostname', '^[a-z0-9_][a-z0-9._-]*$');
 
 CREATE TABLE nameserver_group (
         id SERIAL PRIMARY KEY NOT NULL,