Implement table-level TRIGGER privilege to control access to triggers.
Before this path global SUPER privilege was used for this purpose, that
was the big security problem.
In details, before this patch SUPER privilege was required:
- for the user at CREATE TRIGGER time to create a new trigger;
- for the user at DROP TRIGGER time to drop the existing trigger;
- for the definer at trigger activation time to execute the trigger (if the
definer loses SUPER privilege, all its triggers become unavailable);
This patch changes the behaviour in the following way:
- TRIGGER privilege on the subject table for trigger is required:
- for the user at CREATE TRIGGER time to create a new trigger;
- for the user at DROP TRIGGER time to drop the existing trigger;
- for the definer at trigger activation time to execute the trigger
(if the definer loses TRIGGER privilege on the subject table, all its
triggers on this table become unavailable).
- SUPER privilege is still required:
- for the user at CREATE TRIGGER time to explicitly set the trigger
definer to the user other than CURRENT_USER().
When the server works with database of the previous version (w/o TRIGGER
privilege), or if the database is being upgraded from the previous versions,
TRIGGER privilege is granted to whose users, who have CREATE privilege.
mysql-test/r/grant.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/information_schema.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/lowercase_table_grant.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/ps.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/sp.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/trigger-compat.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/r/trigger-grant.result:
Updated the result file after adding TRIGGER privilege.
mysql-test/t/trigger-compat.test:
Grant table-level TRIGGER privilege instead of global SUPER one.
mysql-test/t/trigger-grant.test:
1. Grant table-level TRIGGER privilege instead of global SUPER one.
2. Updated the test case to check that SUPER is required to specify
the user other than the current as a definer.
scripts/mysql_create_system_tables.sh:
Added TRIGGER privilege.
scripts/mysql_fix_privilege_tables.sql:
Added TRIGGER privilege.
sql/sql_acl.cc:
Added TRIGGER privilege.
sql/sql_acl.h:
Added TRIGGER privilege.
sql/sql_show.cc:
Added TRIGGER privilege.
sql/sql_trigger.cc:
Check TRIGGER privilege instead of SUPER.
sql/sql_yacc.yy:
Added TRIGGER privilege.
mysql-test/r/information_schema.result:
Remove extra spaces from result file.
mysql-test/r/mysqldump.result:
Remove extra spaces from result file.
mysql-test/r/rpl_ddl.result:
Remove extra spaces from result file.
mysql-test/r/trigger-compat.result:
Remove extra spaces from result file.
mysql-test/r/trigger-grant.result:
Remove extra spaces from result file.
mysql-test/r/trigger.result:
Remove extra spaces from result file.
sql/sql_yacc.yy:
Remove leading spaces.
checks on trigger activation)
mysql-test/r/information_schema.result:
Update result file: a new column DEFINER has been added to
INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/mysqldump.result:
Update result file: a new column DEFINER has been added to
INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/rpl_ddl.result:
Update result file: a new column DEFINER has been added to
INFORMATION_SCHEMA.TRIGGERS.
mysql-test/r/rpl_sp.result:
Update result file: a new clause DEFINER has been added to
CREATE TRIGGER statement.
mysql-test/r/rpl_trigger.result:
Results for new test cases were added.
mysql-test/r/skip_grants.result:
Error message has been changed.
mysql-test/r/trigger.result:
Added DEFINER column.
mysql-test/r/view.result:
Error messages have been changed.
mysql-test/r/view_grant.result:
Error messages have been changed.
mysql-test/t/mysqldump.test:
Drop created procedure to not affect further tests.
mysql-test/t/rpl_trigger.test:
Add tests for new column in information schema.
mysql-test/t/skip_grants.test:
Error tag has been renamed.
mysql-test/t/view.test:
Error tag has been renamed.
mysql-test/t/view_grant.test:
Error tag has been changed.
sql/item_func.cc:
Fix typo in comments.
sql/mysql_priv.h:
A try to minimize copy&paste:
- introduce operations to be used from sql_yacc.yy;
- introduce an operation to be used from trigger and
view processing code.
sql/share/errmsg.txt:
- Rename ER_NO_VIEW_USER to ER_MALFORMED_DEFINER in order to
be shared for view and trigger implementations;
- Fix a typo;
- Add a new error code for trigger warning.
sql/sp.cc:
set_info() was split into set_info() and set_definer().
sql/sp_head.cc:
set_info() was split into set_info() and set_definer().
sql/sp_head.h:
set_info() was split into set_info() and set_definer().
sql/sql_acl.cc:
Add a new check: exit from the cycle if the table is NULL.
sql/sql_lex.h:
- Rename create_view_definer to definer, since it is used for views
and triggers;
- Change st_lex_user to LEX_USER, since st_lex_user is a structure.
So, formally, it should be "struct st_lex_user", which is longer
than just LEX_USER;
- Add trigger_definition_begin.
sql/sql_parse.cc:
- Add a new check: exit from the cycle if the table is NULL;
- Implement definer-related functions.
sql/sql_show.cc:
Add DEFINER column.
sql/sql_trigger.cc:
Add DEFINER support for triggers.
sql/sql_trigger.h:
Add DEFINER support for triggers.
sql/sql_view.cc:
Rename create_view_definer to definer.
sql/sql_yacc.yy:
Add support for DEFINER-clause in CREATE TRIGGER statement.
Since CREATE TRIGGER and CREATE VIEW can be similar at the start,
yacc is unable to distinguish between them. So, had to modify both
statements in order to make it parsable by yacc.
mysql-test/r/trigger-compat.result:
Result file for triggers backward compatibility test.
mysql-test/r/trigger-grant.result:
Result file of the test for WL#2818.
mysql-test/t/trigger-compat.test:
Triggers backward compatibility test: check that the server
still can load triggers w/o definer attribute and modify
tables with such triggers (add a new trigger, etc).
mysql-test/t/trigger-grant.test:
Test for WL#2818 -- check that DEFINER support in triggers
works properly
