82 lines
2.0 KiB
SQL
82 lines
2.0 KiB
SQL
DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `account`.`user_hasRoutinePriv`(vType ENUM('PROCEDURE', 'FUNCTION'),
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vChain VARCHAR(100),
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vUserFk INT
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)
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RETURNS tinyint(1)
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NOT DETERMINISTIC
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READS SQL DATA
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BEGIN
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/**
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* Search if the user has privileges on routines.
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*
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* @param vType procedure or function
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* @param vChain string passed with this syntax dbName.tableName
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* @param vUserFk user to ckeck
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* @return vHasPrivilege
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*/
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DECLARE vHasPrivilege BOOL DEFAULT FALSE;
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DECLARE vDb VARCHAR(50);
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DECLARE vObject VARCHAR(50);
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DECLARE vChainExists BOOL;
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DECLARE vExecutePriv INT DEFAULT 262144;
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-- 262144 = CONV(1000000000000000000, 2, 10)
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-- 1000000000000000000 execution permission expressed in binary base
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SET vDb = SUBSTRING_INDEX(vChain, '.', 1);
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SET vChain = SUBSTRING(vChain, LENGTH(vDb) + 2);
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SET vObject = SUBSTRING_INDEX(vChain, '.', 1);
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SELECT COUNT(*) INTO vChainExists
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FROM mysql.proc
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WHERE db = vDb
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AND `name` = vObject
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AND `type` = vType
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LIMIT 1;
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IF NOT vChainExists THEN
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RETURN FALSE;
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END IF;
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DROP TEMPORARY TABLE IF EXISTS tRole;
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CREATE TEMPORARY TABLE tRole
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(INDEX (`name`))
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ENGINE = MEMORY
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SELECT r.`name`
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FROM user u
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JOIN roleRole rr ON rr.role = u.role
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JOIN `role` r ON r.id = rr.inheritsFrom
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WHERE u.id = vUserFk;
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SELECT TRUE INTO vHasPrivilege
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FROM mysql.global_priv gp
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JOIN tRole tr ON tr.name = gp.`User`
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OR CONCAT('$', tr.name) = gp.`User`
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WHERE JSON_VALUE(gp.Priv, '$.access') >= vExecutePriv
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AND gp.Host = ''
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LIMIT 1;
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IF NOT vHasPrivilege THEN
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SELECT TRUE INTO vHasPrivilege
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FROM mysql.db db
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JOIN tRole tr ON tr.name = db.`User`
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WHERE db.Db = vDb
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AND db.Execute_priv = 'Y';
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END IF;
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IF NOT vHasPrivilege THEN
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SELECT TRUE INTO vHasPrivilege
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FROM mysql.procs_priv pp
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JOIN tRole tr ON tr.name = pp.`User`
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WHERE pp.Db = vDb
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AND pp.Routine_name = vObject
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AND pp.Routine_type = vType
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AND pp.Proc_priv = 'Execute'
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LIMIT 1;
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END IF;
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DROP TEMPORARY TABLE tRole;
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RETURN vHasPrivilege;
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END$$
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DELIMITER ;
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