Firebird is freezing when trying to manage users via triggers
-------------------------------------------------------------
Key: CORE-6412
URL: http://tracker.firebirdsql.org/browse/CORE-6412
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 3.0.6
Environment: Windows 10 (x64) Version 2004
Firebird 3.0.6.33328
Firebird 3.0.7.33365 (snapshot)
Reporter: Luciano Mendes
ACTUAL RESULT
- Firebird is freezing when trying to manage users via triggers
EXPECTED RESULT
- Firebird should NOT freeze when trying to manage users via triggers
STEPS TO REPRODUCE THE ISSUE
1- Make sure that the FirebirdSQL 3.0 service is NOT running:
net stop FirebirdServerDefaultInstance
2- Run the following command to create the TEST database:
ECHO SET SQL DIALECT 3;CREATE DATABASE 'TEST' PAGE_SIZE 8192 DEFAULT
CHARACTER SET WIN1252; | "C:\Program Files\Firebird\Firebird_3_0\isql.exe"
-user SYSDBA
3- Run the following command to create the SYSDBA user inside the TEST database
using the SRP plugin:
ECHO CREATE OR ALTER USER SYSDBA SET PASSWORD 'masterkey' USING PLUGIN
SRP;COMMIT; | "C:\Program Files\Firebird\Firebird_3_0\isql.exe" -user SYSDBA
"TEST"
4- Restart the firebird 3.0 service:
net start FirebirdServerDefaultInstance
5- Create the following USERS table:
CREATE TABLE USERS
(
AUTHENTICATION VARCHAR(32) CHARACTER SET WIN1252 COLLATE WIN_PTBR
);
COMMIT;
6- Create the following triggers for USERS table for after Insert or Update or
Delete:
SET TERM ^ ;
CREATE TRIGGER USERS_AI_AU_AD FOR USERS
ACTIVE AFTER INSERT OR UPDATE OR DELETE POSITION 0
AS
BEGIN
IF ((OLD.AUTHENTICATION IS NOT NULL) AND ((NEW.AUTHENTICATION IS NULL) OR
(OLD.AUTHENTICATION<>NEW.AUTHENTICATION)))
THEN BEGIN
EXECUTE STATEMENT 'REVOKE RDB$ADMIN FROM "' || OLD.AUTHENTICATION || '"
GRANTED BY "SYSDBA"';
EXECUTE STATEMENT 'DROP USER "' || OLD.AUTHENTICATION || '" USING PLUGIN
SRP';
END
IF ((NEW.AUTHENTICATION IS NOT NULL) AND ((OLD.AUTHENTICATION IS NULL) OR
(OLD.AUTHENTICATION<>NEW.AUTHENTICATION)))
THEN BEGIN
EXECUTE STATEMENT 'GRANT RDB$ADMIN TO "' || NEW.AUTHENTICATION || '"
GRANTED BY "SYSDBA"';
EXECUTE STATEMENT 'CREATE OR ALTER USER "' || NEW.AUTHENTICATION || '"
SET PASSWORD ''123456'' USING PLUGIN SRP GRANT ADMIN ROLE';
END
END^
SET TERM ; ^
COMMIT;
7- Run the following command add a register on USERS table (No issue so far):
INSERT INTO USERS (AUTHENTICATION) VALUES ('AAA');
COMMIT;
7- Try to run the following command to update the previous register (Firebird
Freeze!):
UPDATE USERS SET AUTHENTICATION='BBB' WHERE AUTHENTICATION='AAA';
COMMIT;
IMPORTANT NOTES
- This issue is NOT reproducible if the security database is security3.fdb
instead of the database itself (TEST);
ENVIRONMENT SETUP
firebird.conf
============================================
#SETUP
UserManager = Srp, Legacy_UserManager
WireCrypt = Enabled
databases.conf
============================================
TEST = D:\APPLICATIONS\LURONUMEN\DB\TEST.FDB
{
AuthServer = Srp
SecurityDatabase = TEST
UserManager = Srp
}
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