--
-- Regression Tests for Label Management
--
--
-- Setup
--
CREATE TABLE t1 (a int, b text);
INSERT INTO t1 VALUES (1, 'aaa'), (2, 'bbb'), (3, 'ccc');
SELECT * INTO t2 FROM t1 WHERE a % 2 = 0;
CREATE FUNCTION f1 () RETURNS text
AS 'SELECT sepgsql_getcon()'
LANGUAGE sql;
CREATE FUNCTION f2 () RETURNS text
AS 'SELECT sepgsql_getcon()'
LANGUAGE sql;
SECURITY LABEL ON FUNCTION f2()
IS 'system_u:object_r:sepgsql_trusted_proc_exec_t:s0';
CREATE FUNCTION f3 () RETURNS text
AS 'BEGIN
RAISE EXCEPTION ''an exception from f3()'';
RETURN NULL;
END;' LANGUAGE plpgsql;
SECURITY LABEL ON FUNCTION f3()
IS 'system_u:object_r:sepgsql_trusted_proc_exec_t:s0';
CREATE FUNCTION f4 () RETURNS text
AS 'SELECT sepgsql_getcon()'
LANGUAGE sql;
SECURITY LABEL ON FUNCTION f4()
IS 'system_u:object_r:sepgsql_nosuch_trusted_proc_exec_t:s0';
CREATE FUNCTION f5 (text) RETURNS bool
AS 'SELECT sepgsql_setcon($1)'
LANGUAGE sql;
SECURITY LABEL ON FUNCTION f5(text)
IS 'system_u:object_r:sepgsql_regtest_trusted_proc_exec_t:s0';
CREATE TABLE auth_tbl(uname text, credential text, label text);
INSERT INTO auth_tbl
VALUES ('foo', 'acbd18db4cc2f85cedef654fccc4a4d8', 'sepgsql_regtest_foo_t:s0'),
('var', 'b2145aac704ce76dbe1ac7adac535b23', 'sepgsql_regtest_var_t:s0'),
('baz', 'b2145aac704ce76dbe1ac7adac535b23', 'sepgsql_regtest_baz_t:s0');
SECURITY LABEL ON TABLE auth_tbl
IS 'system_u:object_r:sepgsql_secret_table_t:s0';
CREATE FUNCTION auth_func(text, text) RETURNS bool
LANGUAGE sql
AS 'SELECT sepgsql_setcon(regexp_replace(sepgsql_getcon(), ''_r:.*$'', ''_r:'' || label))
FROM auth_tbl WHERE uname = $1 AND credential = $2';
SECURITY LABEL ON FUNCTION auth_func(text,text)
IS 'system_u:object_r:sepgsql_regtest_trusted_proc_exec_t:s0';
CREATE TABLE foo_tbl(a int, b text);
INSERT INTO foo_tbl VALUES (1, 'aaa'), (2,'bbb'), (3,'ccc'), (4,'ddd');
SECURITY LABEL ON TABLE foo_tbl
IS 'system_u:object_r:sepgsql_regtest_foo_table_t:s0';
CREATE TABLE var_tbl(x int, y text);
INSERT INTO var_tbl VALUES (2,'xxx'), (3,'yyy'), (4,'zzz'), (5,'xyz');
SECURITY LABEL ON TABLE var_tbl
IS 'system_u:object_r:sepgsql_regtest_var_table_t:s0';
--
-- Tests for default labeling behavior
--
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0
CREATE TABLE t3 (s int, t text);
INSERT INTO t3 VALUES (1, 'sss'), (2, 'ttt'), (3, 'uuu');
SELECT objtype, objname, label FROM pg_seclabels
WHERE provider = 'selinux'
AND objtype in ('table', 'column')
AND objname in ('t1', 't2', 't3');
--
-- Tests for SECURITY LABEL
--
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_dba_t:s0
SECURITY LABEL ON TABLE t1
IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- ok
SECURITY LABEL ON TABLE t2
IS 'invalid security context'; -- be failed
SECURITY LABEL ON COLUMN t2
IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- be failed
SECURITY LABEL ON COLUMN t2.b
IS 'system_u:object_r:sepgsql_ro_table_t:s0'; -- ok
--
-- Tests for Trusted Procedures
--
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0
SELECT f1(); -- normal procedure
SELECT f2(); -- trusted procedure
SELECT f3(); -- trusted procedure that raises an error
SELECT f4(); -- failed on domain transition
SELECT sepgsql_getcon(); -- client's label must be restored
--
-- Test for Dynamic Domain Transition
--
-- validation of transaction aware dynamic-transition
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c25
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c15');
SELECT sepgsql_getcon();
SELECT sepgsql_setcon(NULL); -- failed to reset
SELECT sepgsql_getcon();
BEGIN;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c12');
SELECT sepgsql_getcon();
SAVEPOINT svpt_1;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c9');
SELECT sepgsql_getcon();
SAVEPOINT svpt_2;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c6');
SELECT sepgsql_getcon();
SAVEPOINT svpt_3;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c3');
SELECT sepgsql_getcon();
ROLLBACK TO SAVEPOINT svpt_2;
SELECT sepgsql_getcon(); -- should be 's0:c0.c9'
ROLLBACK TO SAVEPOINT svpt_1;
SELECT sepgsql_getcon(); -- should be 's0:c0.c12'
ABORT;
SELECT sepgsql_getcon(); -- should be 's0:c0.c15'
BEGIN;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c8');
SELECT sepgsql_getcon();
SAVEPOINT svpt_1;
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c4');
SELECT sepgsql_getcon();
ROLLBACK TO SAVEPOINT svpt_1;
SELECT sepgsql_getcon(); -- should be 's0:c0.c8'
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0:c0.c6');
COMMIT;
SELECT sepgsql_getcon(); -- should be 's0:c0.c6'
-- sepgsql_regtest_user_t is not available dynamic-transition,
-- unless sepgsql_setcon() is called inside of trusted-procedure
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c15
-- sepgsql_regtest_user_t has no permission to switch current label
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0'); -- failed
SELECT sepgsql_getcon();
-- trusted procedure allows to switch, but unavailable to override MCS rules
SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c7'); -- OK
SELECT sepgsql_getcon();
SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c31'); -- Failed
SELECT sepgsql_getcon();
SELECT f5(NULL); -- Failed
SELECT sepgsql_getcon();
BEGIN;
SELECT f5('unconfined_u:unconfined_r:sepgsql_regtest_user_t:s0:c0.c3'); -- OK
SELECT sepgsql_getcon();
ABORT;
SELECT sepgsql_getcon();
--
-- Test for simulation of typical connection pooling server
--
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_pool_t:s0
-- we shouldn't allow to switch client label without trusted procedure
SELECT sepgsql_setcon('unconfined_u:unconfined_r:sepgsql_regtest_foo_t:s0');
SELECT * FROM auth_tbl; -- failed, no permission to reference
-- switch to "foo"
SELECT auth_func('foo', 'acbd18db4cc2f85cedef654fccc4a4d8');
SELECT sepgsql_getcon();
SELECT * FROM foo_tbl; -- OK
SELECT * FROM var_tbl; -- failed
SELECT * FROM auth_tbl; -- failed
SELECT sepgsql_setcon(NULL); -- end of session
SELECT sepgsql_getcon();
-- the pooler cannot touch these tables directly
SELECT * FROM foo_tbl; -- failed
SELECT * FROM var_tbl; -- failed
-- switch to "var"
SELECT auth_func('var', 'b2145aac704ce76dbe1ac7adac535b23');
SELECT sepgsql_getcon();
SELECT * FROM foo_tbl; -- failed
SELECT * FROM var_tbl; -- OK
SELECT * FROM auth_tbl; -- failed
SELECT sepgsql_setcon(NULL); -- end of session
-- misc checks
SELECT auth_func('var', 'invalid credential'); -- not works
SELECT sepgsql_getcon();
--
-- Clean up
--
-- @SECURITY-CONTEXT=unconfined_u:unconfined_r:sepgsql_regtest_superuser_t:s0-s0:c0.c255
DROP TABLE IF EXISTS t1 CASCADE;
DROP TABLE IF EXISTS t2 CASCADE;
DROP TABLE IF EXISTS t3 CASCADE;
DROP FUNCTION IF EXISTS f1() CASCADE;
DROP FUNCTION IF EXISTS f2() CASCADE;
DROP FUNCTION IF EXISTS f3() CASCADE;
DROP FUNCTION IF EXISTS f4() CASCADE;
DROP FUNCTION IF EXISTS f5(text) CASCADE;