/
rowsecurity.sql
1803 lines (1436 loc) · 59.7 KB
/
rowsecurity.sql
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--
-- Test of Row-level security feature
--
-- Clean up in case a prior regression run failed
-- Suppress NOTICE messages when users/groups don't exist
SET client_min_messages TO 'warning';
DROP USER IF EXISTS regress_rls_alice;
DROP USER IF EXISTS regress_rls_bob;
DROP USER IF EXISTS regress_rls_carol;
DROP USER IF EXISTS regress_rls_dave;
DROP USER IF EXISTS regress_rls_exempt_user;
DROP ROLE IF EXISTS regress_rls_group1;
DROP ROLE IF EXISTS regress_rls_group2;
DROP SCHEMA IF EXISTS regress_rls_schema CASCADE;
RESET client_min_messages;
-- initial setup
CREATE USER regress_rls_alice NOLOGIN;
CREATE USER regress_rls_bob NOLOGIN;
CREATE USER regress_rls_carol NOLOGIN;
CREATE USER regress_rls_dave NOLOGIN;
CREATE USER regress_rls_exempt_user BYPASSRLS NOLOGIN;
CREATE ROLE regress_rls_group1 NOLOGIN;
CREATE ROLE regress_rls_group2 NOLOGIN;
GRANT regress_rls_group1 TO regress_rls_bob;
GRANT regress_rls_group2 TO regress_rls_carol;
CREATE SCHEMA regress_rls_schema;
GRANT ALL ON SCHEMA regress_rls_schema to public;
SET search_path = regress_rls_schema;
-- setup of malicious function
CREATE OR REPLACE FUNCTION f_leak(text) RETURNS bool
COST 0.0000001 LANGUAGE plpgsql
AS 'BEGIN RAISE NOTICE ''f_leak => %'', $1; RETURN true; END';
GRANT EXECUTE ON FUNCTION f_leak(text) TO public;
-- BASIC Row-Level Security Scenario
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE uaccount (
pguser name primary key,
seclv int
);
GRANT SELECT ON uaccount TO public;
INSERT INTO uaccount VALUES
('regress_rls_alice', 99),
('regress_rls_bob', 1),
('regress_rls_carol', 2),
('regress_rls_dave', 3);
CREATE TABLE category (
cid int primary key,
cname text
);
GRANT ALL ON category TO public;
INSERT INTO category VALUES
(11, 'novel'),
(22, 'science fiction'),
(33, 'technology'),
(44, 'manga');
CREATE TABLE document (
did int primary key,
cid int references category(cid),
dlevel int not null,
dauthor name,
dtitle text
);
GRANT ALL ON document TO public;
INSERT INTO document VALUES
( 1, 11, 1, 'regress_rls_bob', 'my first novel'),
( 2, 11, 2, 'regress_rls_bob', 'my second novel'),
( 3, 22, 2, 'regress_rls_bob', 'my science fiction'),
( 4, 44, 1, 'regress_rls_bob', 'my first manga'),
( 5, 44, 2, 'regress_rls_bob', 'my second manga'),
( 6, 22, 1, 'regress_rls_carol', 'great science fiction'),
( 7, 33, 2, 'regress_rls_carol', 'great technology book'),
( 8, 44, 1, 'regress_rls_carol', 'great manga'),
( 9, 22, 1, 'regress_rls_dave', 'awesome science fiction'),
(10, 33, 2, 'regress_rls_dave', 'awesome technology book');
ALTER TABLE document ENABLE ROW LEVEL SECURITY;
-- user's security level must be higher than or equal to document's
CREATE POLICY p1 ON document AS PERMISSIVE
USING (dlevel <= (SELECT seclv FROM uaccount WHERE pguser = current_user));
-- try to create a policy of bogus type
CREATE POLICY p1 ON document AS UGLY
USING (dlevel <= (SELECT seclv FROM uaccount WHERE pguser = current_user));
-- but Dave isn't allowed to anything at cid 50 or above
-- this is to make sure that we sort the policies by name first
-- when applying WITH CHECK, a later INSERT by Dave should fail due
-- to p1r first
CREATE POLICY p2r ON document AS RESTRICTIVE TO regress_rls_dave
USING (cid <> 44 AND cid < 50);
-- and Dave isn't allowed to see manga documents
CREATE POLICY p1r ON document AS RESTRICTIVE TO regress_rls_dave
USING (cid <> 44);
\dp
\d document
SELECT * FROM pg_policies WHERE schemaname = 'regress_rls_schema' AND tablename = 'document' ORDER BY policyname;
-- viewpoint from regress_rls_bob
SET SESSION AUTHORIZATION regress_rls_bob;
SET row_security TO ON;
SELECT * FROM document WHERE f_leak(dtitle) ORDER BY did;
SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle) ORDER BY did;
-- try a sampled version
SELECT * FROM document TABLESAMPLE BERNOULLI(50) REPEATABLE(0)
WHERE f_leak(dtitle) ORDER BY did;
-- viewpoint from regress_rls_carol
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM document WHERE f_leak(dtitle) ORDER BY did;
SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle) ORDER BY did;
-- try a sampled version
SELECT * FROM document TABLESAMPLE BERNOULLI(50) REPEATABLE(0)
WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM document WHERE f_leak(dtitle);
EXPLAIN (COSTS OFF) SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle);
-- viewpoint from regress_rls_dave
SET SESSION AUTHORIZATION regress_rls_dave;
SELECT * FROM document WHERE f_leak(dtitle) ORDER BY did;
SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM document WHERE f_leak(dtitle);
EXPLAIN (COSTS OFF) SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle);
-- 44 would technically fail for both p2r and p1r, but we should get an error
-- back from p1r for this because it sorts first
INSERT INTO document VALUES (100, 44, 1, 'regress_rls_dave', 'testing sorting of policies'); -- fail
-- Just to see a p2r error
INSERT INTO document VALUES (100, 55, 1, 'regress_rls_dave', 'testing sorting of policies'); -- fail
-- only owner can change policies
ALTER POLICY p1 ON document USING (true); --fail
DROP POLICY p1 ON document; --fail
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER POLICY p1 ON document USING (dauthor = current_user);
-- viewpoint from regress_rls_bob again
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM document WHERE f_leak(dtitle) ORDER BY did;
SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle) ORDER by did;
-- viewpoint from rls_regres_carol again
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM document WHERE f_leak(dtitle) ORDER BY did;
SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle) ORDER by did;
EXPLAIN (COSTS OFF) SELECT * FROM document WHERE f_leak(dtitle);
EXPLAIN (COSTS OFF) SELECT * FROM document NATURAL JOIN category WHERE f_leak(dtitle);
-- interaction of FK/PK constraints
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE POLICY p2 ON category
USING (CASE WHEN current_user = 'regress_rls_bob' THEN cid IN (11, 33)
WHEN current_user = 'regress_rls_carol' THEN cid IN (22, 44)
ELSE false END);
ALTER TABLE category ENABLE ROW LEVEL SECURITY;
-- cannot delete PK referenced by invisible FK
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM document d FULL OUTER JOIN category c on d.cid = c.cid ORDER BY d.did, c.cid;
DELETE FROM category WHERE cid = 33; -- fails with FK violation
-- can insert FK referencing invisible PK
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM document d FULL OUTER JOIN category c on d.cid = c.cid ORDER BY d.did, c.cid;
INSERT INTO document VALUES (11, 33, 1, current_user, 'hoge');
-- UNIQUE or PRIMARY KEY constraint violation DOES reveal presence of row
SET SESSION AUTHORIZATION regress_rls_bob;
INSERT INTO document VALUES (8, 44, 1, 'regress_rls_bob', 'my third manga'); -- Must fail with unique violation, revealing presence of did we can't see
SELECT * FROM document WHERE did = 8; -- and confirm we can't see it
-- RLS policies are checked before constraints
INSERT INTO document VALUES (8, 44, 1, 'regress_rls_carol', 'my third manga'); -- Should fail with RLS check violation, not duplicate key violation
UPDATE document SET did = 8, dauthor = 'regress_rls_carol' WHERE did = 5; -- Should fail with RLS check violation, not duplicate key violation
-- database superuser does bypass RLS policy when enabled
RESET SESSION AUTHORIZATION;
SET row_security TO ON;
SELECT * FROM document;
SELECT * FROM category;
-- database superuser does bypass RLS policy when disabled
RESET SESSION AUTHORIZATION;
SET row_security TO OFF;
SELECT * FROM document;
SELECT * FROM category;
-- database non-superuser with bypass privilege can bypass RLS policy when disabled
SET SESSION AUTHORIZATION regress_rls_exempt_user;
SET row_security TO OFF;
SELECT * FROM document;
SELECT * FROM category;
-- RLS policy does not apply to table owner when RLS enabled.
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO ON;
SELECT * FROM document;
SELECT * FROM category;
-- RLS policy does not apply to table owner when RLS disabled.
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO OFF;
SELECT * FROM document;
SELECT * FROM category;
--
-- Table inheritance and RLS policy
--
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO ON;
CREATE TABLE t1 (a int, junk1 text, b text) WITH OIDS;
ALTER TABLE t1 DROP COLUMN junk1; -- just a disturbing factor
GRANT ALL ON t1 TO public;
COPY t1 FROM stdin WITH (oids);
101 1 aba
102 2 bbb
103 3 ccc
104 4 dad
\.
CREATE TABLE t2 (c float) INHERITS (t1);
GRANT ALL ON t2 TO public;
COPY t2 FROM stdin WITH (oids);
201 1 abc 1.1
202 2 bcd 2.2
203 3 cde 3.3
204 4 def 4.4
\.
CREATE TABLE t3 (c text, b text, a int) WITH OIDS;
ALTER TABLE t3 INHERIT t1;
GRANT ALL ON t3 TO public;
COPY t3(a,b,c) FROM stdin WITH (oids);
301 1 xxx X
302 2 yyy Y
303 3 zzz Z
\.
CREATE POLICY p1 ON t1 FOR ALL TO PUBLIC USING (a % 2 = 0); -- be even number
CREATE POLICY p2 ON t2 FOR ALL TO PUBLIC USING (a % 2 = 1); -- be odd number
ALTER TABLE t1 ENABLE ROW LEVEL SECURITY;
ALTER TABLE t2 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM t1;
EXPLAIN (COSTS OFF) SELECT * FROM t1;
SELECT * FROM t1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM t1 WHERE f_leak(b);
-- reference to system column
SELECT oid, * FROM t1;
EXPLAIN (COSTS OFF) SELECT *, t1 FROM t1;
-- reference to whole-row reference
SELECT *, t1 FROM t1;
EXPLAIN (COSTS OFF) SELECT *, t1 FROM t1;
-- for share/update lock
SELECT * FROM t1 FOR SHARE;
EXPLAIN (COSTS OFF) SELECT * FROM t1 FOR SHARE;
SELECT * FROM t1 WHERE f_leak(b) FOR SHARE;
EXPLAIN (COSTS OFF) SELECT * FROM t1 WHERE f_leak(b) FOR SHARE;
-- union all query
SELECT a, b, oid FROM t2 UNION ALL SELECT a, b, oid FROM t3;
EXPLAIN (COSTS OFF) SELECT a, b, oid FROM t2 UNION ALL SELECT a, b, oid FROM t3;
-- superuser is allowed to bypass RLS checks
RESET SESSION AUTHORIZATION;
SET row_security TO OFF;
SELECT * FROM t1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM t1 WHERE f_leak(b);
-- non-superuser with bypass privilege can bypass RLS policy when disabled
SET SESSION AUTHORIZATION regress_rls_exempt_user;
SET row_security TO OFF;
SELECT * FROM t1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM t1 WHERE f_leak(b);
--
-- Partitioned Tables
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE part_document (
did int,
cid int,
dlevel int not null,
dauthor name,
dtitle text
) PARTITION BY RANGE (cid);
GRANT ALL ON part_document TO public;
-- Create partitions for document categories
CREATE TABLE part_document_fiction PARTITION OF part_document FOR VALUES FROM (11) to (12);
CREATE TABLE part_document_satire PARTITION OF part_document FOR VALUES FROM (55) to (56);
CREATE TABLE part_document_nonfiction PARTITION OF part_document FOR VALUES FROM (99) to (100);
GRANT ALL ON part_document_fiction TO public;
GRANT ALL ON part_document_satire TO public;
GRANT ALL ON part_document_nonfiction TO public;
INSERT INTO part_document VALUES
( 1, 11, 1, 'regress_rls_bob', 'my first novel'),
( 2, 11, 2, 'regress_rls_bob', 'my second novel'),
( 3, 99, 2, 'regress_rls_bob', 'my science textbook'),
( 4, 55, 1, 'regress_rls_bob', 'my first satire'),
( 5, 99, 2, 'regress_rls_bob', 'my history book'),
( 6, 11, 1, 'regress_rls_carol', 'great science fiction'),
( 7, 99, 2, 'regress_rls_carol', 'great technology book'),
( 8, 55, 2, 'regress_rls_carol', 'great satire'),
( 9, 11, 1, 'regress_rls_dave', 'awesome science fiction'),
(10, 99, 2, 'regress_rls_dave', 'awesome technology book');
ALTER TABLE part_document ENABLE ROW LEVEL SECURITY;
-- Create policy on parent
-- user's security level must be higher than or equal to document's
CREATE POLICY pp1 ON part_document AS PERMISSIVE
USING (dlevel <= (SELECT seclv FROM uaccount WHERE pguser = current_user));
-- Dave is only allowed to see cid < 55
CREATE POLICY pp1r ON part_document AS RESTRICTIVE TO regress_rls_dave
USING (cid < 55);
\d+ part_document
SELECT * FROM pg_policies WHERE schemaname = 'regress_rls_schema' AND tablename like '%part_document%' ORDER BY policyname;
-- viewpoint from regress_rls_bob
SET SESSION AUTHORIZATION regress_rls_bob;
SET row_security TO ON;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- viewpoint from regress_rls_carol
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- viewpoint from regress_rls_dave
SET SESSION AUTHORIZATION regress_rls_dave;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- pp1 ERROR
INSERT INTO part_document VALUES (100, 11, 5, 'regress_rls_dave', 'testing pp1'); -- fail
-- pp1r ERROR
INSERT INTO part_document VALUES (100, 99, 1, 'regress_rls_dave', 'testing pp1r'); -- fail
-- Show that RLS policy does not apply for direct inserts to children
-- This should fail with RLS POLICY pp1r violation.
INSERT INTO part_document VALUES (100, 55, 1, 'regress_rls_dave', 'testing RLS with partitions'); -- fail
-- But this should succeed.
INSERT INTO part_document_satire VALUES (100, 55, 1, 'regress_rls_dave', 'testing RLS with partitions'); -- success
-- We still cannot see the row using the parent
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
-- But we can if we look directly
SELECT * FROM part_document_satire WHERE f_leak(dtitle) ORDER BY did;
-- Turn on RLS and create policy on child to show RLS is checked before constraints
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER TABLE part_document_satire ENABLE ROW LEVEL SECURITY;
CREATE POLICY pp3 ON part_document_satire AS RESTRICTIVE
USING (cid < 55);
-- This should fail with RLS violation now.
SET SESSION AUTHORIZATION regress_rls_dave;
INSERT INTO part_document_satire VALUES (101, 55, 1, 'regress_rls_dave', 'testing RLS with partitions'); -- fail
-- And now we cannot see directly into the partition either, due to RLS
SELECT * FROM part_document_satire WHERE f_leak(dtitle) ORDER BY did;
-- The parent looks same as before
-- viewpoint from regress_rls_dave
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- viewpoint from regress_rls_carol
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- only owner can change policies
ALTER POLICY pp1 ON part_document USING (true); --fail
DROP POLICY pp1 ON part_document; --fail
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER POLICY pp1 ON part_document USING (dauthor = current_user);
-- viewpoint from regress_rls_bob again
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
-- viewpoint from rls_regres_carol again
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM part_document WHERE f_leak(dtitle) ORDER BY did;
EXPLAIN (COSTS OFF) SELECT * FROM part_document WHERE f_leak(dtitle);
-- database superuser does bypass RLS policy when enabled
RESET SESSION AUTHORIZATION;
SET row_security TO ON;
SELECT * FROM part_document ORDER BY did;
SELECT * FROM part_document_satire ORDER by did;
-- database non-superuser with bypass privilege can bypass RLS policy when disabled
SET SESSION AUTHORIZATION regress_rls_exempt_user;
SET row_security TO OFF;
SELECT * FROM part_document ORDER BY did;
SELECT * FROM part_document_satire ORDER by did;
-- RLS policy does not apply to table owner when RLS enabled.
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO ON;
SELECT * FROM part_document ORDER by did;
SELECT * FROM part_document_satire ORDER by did;
-- When RLS disabled, other users get ERROR.
SET SESSION AUTHORIZATION regress_rls_dave;
SET row_security TO OFF;
SELECT * FROM part_document ORDER by did;
SELECT * FROM part_document_satire ORDER by did;
-- Check behavior with a policy that uses a SubPlan not an InitPlan.
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO ON;
CREATE POLICY pp3 ON part_document AS RESTRICTIVE
USING ((SELECT dlevel <= seclv FROM uaccount WHERE pguser = current_user));
SET SESSION AUTHORIZATION regress_rls_carol;
INSERT INTO part_document VALUES (100, 11, 5, 'regress_rls_carol', 'testing pp3'); -- fail
----- Dependencies -----
SET SESSION AUTHORIZATION regress_rls_alice;
SET row_security TO ON;
CREATE TABLE dependee (x integer, y integer);
CREATE TABLE dependent (x integer, y integer);
CREATE POLICY d1 ON dependent FOR ALL
TO PUBLIC
USING (x = (SELECT d.x FROM dependee d WHERE d.y = y));
DROP TABLE dependee; -- Should fail without CASCADE due to dependency on row security qual?
DROP TABLE dependee CASCADE;
EXPLAIN (COSTS OFF) SELECT * FROM dependent; -- After drop, should be unqualified
----- RECURSION ----
--
-- Simple recursion
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE rec1 (x integer, y integer);
CREATE POLICY r1 ON rec1 USING (x = (SELECT r.x FROM rec1 r WHERE y = r.y));
ALTER TABLE rec1 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rec1; -- fail, direct recursion
--
-- Mutual recursion
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE rec2 (a integer, b integer);
ALTER POLICY r1 ON rec1 USING (x = (SELECT a FROM rec2 WHERE b = y));
CREATE POLICY r2 ON rec2 USING (a = (SELECT x FROM rec1 WHERE y = b));
ALTER TABLE rec2 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rec1; -- fail, mutual recursion
--
-- Mutual recursion via views
--
SET SESSION AUTHORIZATION regress_rls_bob;
CREATE VIEW rec1v AS SELECT * FROM rec1;
CREATE VIEW rec2v AS SELECT * FROM rec2;
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER POLICY r1 ON rec1 USING (x = (SELECT a FROM rec2v WHERE b = y));
ALTER POLICY r2 ON rec2 USING (a = (SELECT x FROM rec1v WHERE y = b));
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rec1; -- fail, mutual recursion via views
--
-- Mutual recursion via .s.b views
--
SET SESSION AUTHORIZATION regress_rls_bob;
\set VERBOSITY terse \\ -- suppress cascade details
DROP VIEW rec1v, rec2v CASCADE;
\set VERBOSITY default
CREATE VIEW rec1v WITH (security_barrier) AS SELECT * FROM rec1;
CREATE VIEW rec2v WITH (security_barrier) AS SELECT * FROM rec2;
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE POLICY r1 ON rec1 USING (x = (SELECT a FROM rec2v WHERE b = y));
CREATE POLICY r2 ON rec2 USING (a = (SELECT x FROM rec1v WHERE y = b));
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rec1; -- fail, mutual recursion via s.b. views
--
-- recursive RLS and VIEWs in policy
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE s1 (a int, b text);
INSERT INTO s1 (SELECT x, md5(x::text) FROM generate_series(-10,10) x);
CREATE TABLE s2 (x int, y text);
INSERT INTO s2 (SELECT x, md5(x::text) FROM generate_series(-6,6) x);
GRANT SELECT ON s1, s2 TO regress_rls_bob;
CREATE POLICY p1 ON s1 USING (a in (select x from s2 where y like '%2f%'));
CREATE POLICY p2 ON s2 USING (x in (select a from s1 where b like '%22%'));
CREATE POLICY p3 ON s1 FOR INSERT WITH CHECK (a = (SELECT a FROM s1));
ALTER TABLE s1 ENABLE ROW LEVEL SECURITY;
ALTER TABLE s2 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
CREATE VIEW v2 AS SELECT * FROM s2 WHERE y like '%af%';
SELECT * FROM s1 WHERE f_leak(b); -- fail (infinite recursion)
INSERT INTO s1 VALUES (1, 'foo'); -- fail (infinite recursion)
SET SESSION AUTHORIZATION regress_rls_alice;
DROP POLICY p3 on s1;
ALTER POLICY p2 ON s2 USING (x % 2 = 0);
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM s1 WHERE f_leak(b); -- OK
EXPLAIN (COSTS OFF) SELECT * FROM only s1 WHERE f_leak(b);
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER POLICY p1 ON s1 USING (a in (select x from v2)); -- using VIEW in RLS policy
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM s1 WHERE f_leak(b); -- OK
EXPLAIN (COSTS OFF) SELECT * FROM s1 WHERE f_leak(b);
SELECT (SELECT x FROM s1 LIMIT 1) xx, * FROM s2 WHERE y like '%28%';
EXPLAIN (COSTS OFF) SELECT (SELECT x FROM s1 LIMIT 1) xx, * FROM s2 WHERE y like '%28%';
SET SESSION AUTHORIZATION regress_rls_alice;
ALTER POLICY p2 ON s2 USING (x in (select a from s1 where b like '%d2%'));
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM s1 WHERE f_leak(b); -- fail (infinite recursion via view)
-- prepared statement with regress_rls_alice privilege
PREPARE p1(int) AS SELECT * FROM t1 WHERE a <= $1;
EXECUTE p1(2);
EXPLAIN (COSTS OFF) EXECUTE p1(2);
-- superuser is allowed to bypass RLS checks
RESET SESSION AUTHORIZATION;
SET row_security TO OFF;
SELECT * FROM t1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM t1 WHERE f_leak(b);
-- plan cache should be invalidated
EXECUTE p1(2);
EXPLAIN (COSTS OFF) EXECUTE p1(2);
PREPARE p2(int) AS SELECT * FROM t1 WHERE a = $1;
EXECUTE p2(2);
EXPLAIN (COSTS OFF) EXECUTE p2(2);
-- also, case when privilege switch from superuser
SET SESSION AUTHORIZATION regress_rls_bob;
SET row_security TO ON;
EXECUTE p2(2);
EXPLAIN (COSTS OFF) EXECUTE p2(2);
--
-- UPDATE / DELETE and Row-level security
--
SET SESSION AUTHORIZATION regress_rls_bob;
EXPLAIN (COSTS OFF) UPDATE t1 SET b = b || b WHERE f_leak(b);
UPDATE t1 SET b = b || b WHERE f_leak(b);
EXPLAIN (COSTS OFF) UPDATE only t1 SET b = b || '_updt' WHERE f_leak(b);
UPDATE only t1 SET b = b || '_updt' WHERE f_leak(b);
-- returning clause with system column
UPDATE only t1 SET b = b WHERE f_leak(b) RETURNING oid, *, t1;
UPDATE t1 SET b = b WHERE f_leak(b) RETURNING *;
UPDATE t1 SET b = b WHERE f_leak(b) RETURNING oid, *, t1;
-- updates with from clause
EXPLAIN (COSTS OFF) UPDATE t2 SET b=t2.b FROM t3
WHERE t2.a = 3 and t3.a = 2 AND f_leak(t2.b) AND f_leak(t3.b);
UPDATE t2 SET b=t2.b FROM t3
WHERE t2.a = 3 and t3.a = 2 AND f_leak(t2.b) AND f_leak(t3.b);
EXPLAIN (COSTS OFF) UPDATE t1 SET b=t1.b FROM t2
WHERE t1.a = 3 and t2.a = 3 AND f_leak(t1.b) AND f_leak(t2.b);
UPDATE t1 SET b=t1.b FROM t2
WHERE t1.a = 3 and t2.a = 3 AND f_leak(t1.b) AND f_leak(t2.b);
EXPLAIN (COSTS OFF) UPDATE t2 SET b=t2.b FROM t1
WHERE t1.a = 3 and t2.a = 3 AND f_leak(t1.b) AND f_leak(t2.b);
UPDATE t2 SET b=t2.b FROM t1
WHERE t1.a = 3 and t2.a = 3 AND f_leak(t1.b) AND f_leak(t2.b);
-- updates with from clause self join
EXPLAIN (COSTS OFF) UPDATE t2 t2_1 SET b = t2_2.b FROM t2 t2_2
WHERE t2_1.a = 3 AND t2_2.a = t2_1.a AND t2_2.b = t2_1.b
AND f_leak(t2_1.b) AND f_leak(t2_2.b) RETURNING *, t2_1, t2_2;
UPDATE t2 t2_1 SET b = t2_2.b FROM t2 t2_2
WHERE t2_1.a = 3 AND t2_2.a = t2_1.a AND t2_2.b = t2_1.b
AND f_leak(t2_1.b) AND f_leak(t2_2.b) RETURNING *, t2_1, t2_2;
EXPLAIN (COSTS OFF) UPDATE t1 t1_1 SET b = t1_2.b FROM t1 t1_2
WHERE t1_1.a = 4 AND t1_2.a = t1_1.a AND t1_2.b = t1_1.b
AND f_leak(t1_1.b) AND f_leak(t1_2.b) RETURNING *, t1_1, t1_2;
UPDATE t1 t1_1 SET b = t1_2.b FROM t1 t1_2
WHERE t1_1.a = 4 AND t1_2.a = t1_1.a AND t1_2.b = t1_1.b
AND f_leak(t1_1.b) AND f_leak(t1_2.b) RETURNING *, t1_1, t1_2;
RESET SESSION AUTHORIZATION;
SET row_security TO OFF;
SELECT * FROM t1 ORDER BY a,b;
SET SESSION AUTHORIZATION regress_rls_bob;
SET row_security TO ON;
EXPLAIN (COSTS OFF) DELETE FROM only t1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) DELETE FROM t1 WHERE f_leak(b);
DELETE FROM only t1 WHERE f_leak(b) RETURNING oid, *, t1;
DELETE FROM t1 WHERE f_leak(b) RETURNING oid, *, t1;
--
-- S.b. view on top of Row-level security
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE b1 (a int, b text);
INSERT INTO b1 (SELECT x, md5(x::text) FROM generate_series(-10,10) x);
CREATE POLICY p1 ON b1 USING (a % 2 = 0);
ALTER TABLE b1 ENABLE ROW LEVEL SECURITY;
GRANT ALL ON b1 TO regress_rls_bob;
SET SESSION AUTHORIZATION regress_rls_bob;
CREATE VIEW bv1 WITH (security_barrier) AS SELECT * FROM b1 WHERE a > 0 WITH CHECK OPTION;
GRANT ALL ON bv1 TO regress_rls_carol;
SET SESSION AUTHORIZATION regress_rls_carol;
EXPLAIN (COSTS OFF) SELECT * FROM bv1 WHERE f_leak(b);
SELECT * FROM bv1 WHERE f_leak(b);
INSERT INTO bv1 VALUES (-1, 'xxx'); -- should fail view WCO
INSERT INTO bv1 VALUES (11, 'xxx'); -- should fail RLS check
INSERT INTO bv1 VALUES (12, 'xxx'); -- ok
EXPLAIN (COSTS OFF) UPDATE bv1 SET b = 'yyy' WHERE a = 4 AND f_leak(b);
UPDATE bv1 SET b = 'yyy' WHERE a = 4 AND f_leak(b);
EXPLAIN (COSTS OFF) DELETE FROM bv1 WHERE a = 6 AND f_leak(b);
DELETE FROM bv1 WHERE a = 6 AND f_leak(b);
SET SESSION AUTHORIZATION regress_rls_alice;
SELECT * FROM b1;
--
-- INSERT ... ON CONFLICT DO UPDATE and Row-level security
--
SET SESSION AUTHORIZATION regress_rls_alice;
DROP POLICY p1 ON document;
DROP POLICY p1r ON document;
CREATE POLICY p1 ON document FOR SELECT USING (true);
CREATE POLICY p2 ON document FOR INSERT WITH CHECK (dauthor = current_user);
CREATE POLICY p3 ON document FOR UPDATE
USING (cid = (SELECT cid from category WHERE cname = 'novel'))
WITH CHECK (dauthor = current_user);
SET SESSION AUTHORIZATION regress_rls_bob;
-- Exists...
SELECT * FROM document WHERE did = 2;
-- ...so violates actual WITH CHECK OPTION within UPDATE (not INSERT, since
-- alternative UPDATE path happens to be taken):
INSERT INTO document VALUES (2, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_carol', 'my first novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle, dauthor = EXCLUDED.dauthor;
-- Violates USING qual for UPDATE policy p3.
--
-- UPDATE path is taken, but UPDATE fails purely because *existing* row to be
-- updated is not a "novel"/cid 11 (row is not leaked, even though we have
-- SELECT privileges sufficient to see the row in this instance):
INSERT INTO document VALUES (33, 22, 1, 'regress_rls_bob', 'okay science fiction'); -- preparation for next statement
INSERT INTO document VALUES (33, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'Some novel, replaces sci-fi') -- takes UPDATE path
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle;
-- Fine (we UPDATE, since INSERT WCOs and UPDATE security barrier quals + WCOs
-- not violated):
INSERT INTO document VALUES (2, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'my first novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle RETURNING *;
-- Fine (we INSERT, so "cid = 33" ("technology") isn't evaluated):
INSERT INTO document VALUES (78, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'some technology novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle, cid = 33 RETURNING *;
-- Fine (same query, but we UPDATE, so "cid = 33", ("technology") is not the
-- case in respect of *existing* tuple):
INSERT INTO document VALUES (78, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'some technology novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle, cid = 33 RETURNING *;
-- Same query a third time, but now fails due to existing tuple finally not
-- passing quals:
INSERT INTO document VALUES (78, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'some technology novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle, cid = 33 RETURNING *;
-- Don't fail just because INSERT doesn't satisfy WITH CHECK option that
-- originated as a barrier/USING() qual from the UPDATE. Note that the UPDATE
-- path *isn't* taken, and so UPDATE-related policy does not apply:
INSERT INTO document VALUES (79, (SELECT cid from category WHERE cname = 'technology'), 1, 'regress_rls_bob', 'technology book, can only insert')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle RETURNING *;
-- But this time, the same statement fails, because the UPDATE path is taken,
-- and updating the row just inserted falls afoul of security barrier qual
-- (enforced as WCO) -- what we might have updated target tuple to is
-- irrelevant, in fact.
INSERT INTO document VALUES (79, (SELECT cid from category WHERE cname = 'technology'), 1, 'regress_rls_bob', 'technology book, can only insert')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle RETURNING *;
-- Test default USING qual enforced as WCO
SET SESSION AUTHORIZATION regress_rls_alice;
DROP POLICY p1 ON document;
DROP POLICY p2 ON document;
DROP POLICY p3 ON document;
CREATE POLICY p3_with_default ON document FOR UPDATE
USING (cid = (SELECT cid from category WHERE cname = 'novel'));
SET SESSION AUTHORIZATION regress_rls_bob;
-- Just because WCO-style enforcement of USING quals occurs with
-- existing/target tuple does not mean that the implementation can be allowed
-- to fail to also enforce this qual against the final tuple appended to
-- relation (since in the absence of an explicit WCO, this is also interpreted
-- as an UPDATE/ALL WCO in general).
--
-- UPDATE path is taken here (fails due to existing tuple). Note that this is
-- not reported as a "USING expression", because it's an RLS UPDATE check that originated as
-- a USING qual for the purposes of RLS in general, as opposed to an explicit
-- USING qual that is ordinarily a security barrier. We leave it up to the
-- UPDATE to make this fail:
INSERT INTO document VALUES (79, (SELECT cid from category WHERE cname = 'technology'), 1, 'regress_rls_bob', 'technology book, can only insert')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle RETURNING *;
-- UPDATE path is taken here. Existing tuple passes, since its cid
-- corresponds to "novel", but default USING qual is enforced against
-- post-UPDATE tuple too (as always when updating with a policy that lacks an
-- explicit WCO), and so this fails:
INSERT INTO document VALUES (2, (SELECT cid from category WHERE cname = 'technology'), 1, 'regress_rls_bob', 'my first novel')
ON CONFLICT (did) DO UPDATE SET cid = EXCLUDED.cid, dtitle = EXCLUDED.dtitle RETURNING *;
SET SESSION AUTHORIZATION regress_rls_alice;
DROP POLICY p3_with_default ON document;
--
-- Test ALL policies with ON CONFLICT DO UPDATE (much the same as existing UPDATE
-- tests)
--
CREATE POLICY p3_with_all ON document FOR ALL
USING (cid = (SELECT cid from category WHERE cname = 'novel'))
WITH CHECK (dauthor = current_user);
SET SESSION AUTHORIZATION regress_rls_bob;
-- Fails, since ALL WCO is enforced in insert path:
INSERT INTO document VALUES (80, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_carol', 'my first novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle, cid = 33;
-- Fails, since ALL policy USING qual is enforced (existing, target tuple is in
-- violation, since it has the "manga" cid):
INSERT INTO document VALUES (4, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'my first novel')
ON CONFLICT (did) DO UPDATE SET dtitle = EXCLUDED.dtitle;
-- Fails, since ALL WCO are enforced:
INSERT INTO document VALUES (1, (SELECT cid from category WHERE cname = 'novel'), 1, 'regress_rls_bob', 'my first novel')
ON CONFLICT (did) DO UPDATE SET dauthor = 'regress_rls_carol';
--
-- ROLE/GROUP
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE z1 (a int, b text);
CREATE TABLE z2 (a int, b text);
GRANT SELECT ON z1,z2 TO regress_rls_group1, regress_rls_group2,
regress_rls_bob, regress_rls_carol;
INSERT INTO z1 VALUES
(1, 'aba'),
(2, 'bbb'),
(3, 'ccc'),
(4, 'dad');
CREATE POLICY p1 ON z1 TO regress_rls_group1 USING (a % 2 = 0);
CREATE POLICY p2 ON z1 TO regress_rls_group2 USING (a % 2 = 1);
ALTER TABLE z1 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM z1 WHERE f_leak(b);
PREPARE plancache_test AS SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) EXECUTE plancache_test;
PREPARE plancache_test2 AS WITH q AS (SELECT * FROM z1 WHERE f_leak(b)) SELECT * FROM q,z2;
EXPLAIN (COSTS OFF) EXECUTE plancache_test2;
PREPARE plancache_test3 AS WITH q AS (SELECT * FROM z2) SELECT * FROM q,z1 WHERE f_leak(z1.b);
EXPLAIN (COSTS OFF) EXECUTE plancache_test3;
SET ROLE regress_rls_group1;
SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) EXECUTE plancache_test;
EXPLAIN (COSTS OFF) EXECUTE plancache_test2;
EXPLAIN (COSTS OFF) EXECUTE plancache_test3;
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) EXECUTE plancache_test;
EXPLAIN (COSTS OFF) EXECUTE plancache_test2;
EXPLAIN (COSTS OFF) EXECUTE plancache_test3;
SET ROLE regress_rls_group2;
SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM z1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) EXECUTE plancache_test;
EXPLAIN (COSTS OFF) EXECUTE plancache_test2;
EXPLAIN (COSTS OFF) EXECUTE plancache_test3;
--
-- Views should follow policy for view owner.
--
-- View and Table owner are the same.
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE VIEW rls_view AS SELECT * FROM z1 WHERE f_leak(b);
GRANT SELECT ON rls_view TO regress_rls_bob;
-- Query as role that is not owner of view or table. Should return all records.
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rls_view;
EXPLAIN (COSTS OFF) SELECT * FROM rls_view;
-- Query as view/table owner. Should return all records.
SET SESSION AUTHORIZATION regress_rls_alice;
SELECT * FROM rls_view;
EXPLAIN (COSTS OFF) SELECT * FROM rls_view;
DROP VIEW rls_view;
-- View and Table owners are different.
SET SESSION AUTHORIZATION regress_rls_bob;
CREATE VIEW rls_view AS SELECT * FROM z1 WHERE f_leak(b);
GRANT SELECT ON rls_view TO regress_rls_alice;
-- Query as role that is not owner of view but is owner of table.
-- Should return records based on view owner policies.
SET SESSION AUTHORIZATION regress_rls_alice;
SELECT * FROM rls_view;
EXPLAIN (COSTS OFF) SELECT * FROM rls_view;
-- Query as role that is not owner of table but is owner of view.
-- Should return records based on view owner policies.
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM rls_view;
EXPLAIN (COSTS OFF) SELECT * FROM rls_view;
-- Query as role that is not the owner of the table or view without permissions.
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM rls_view; --fail - permission denied.
EXPLAIN (COSTS OFF) SELECT * FROM rls_view; --fail - permission denied.
-- Query as role that is not the owner of the table or view with permissions.
SET SESSION AUTHORIZATION regress_rls_bob;
GRANT SELECT ON rls_view TO regress_rls_carol;
SELECT * FROM rls_view;
EXPLAIN (COSTS OFF) SELECT * FROM rls_view;
SET SESSION AUTHORIZATION regress_rls_bob;
DROP VIEW rls_view;
--
-- Command specific
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE x1 (a int, b text, c text);
GRANT ALL ON x1 TO PUBLIC;
INSERT INTO x1 VALUES
(1, 'abc', 'regress_rls_bob'),
(2, 'bcd', 'regress_rls_bob'),
(3, 'cde', 'regress_rls_carol'),
(4, 'def', 'regress_rls_carol'),
(5, 'efg', 'regress_rls_bob'),
(6, 'fgh', 'regress_rls_bob'),
(7, 'fgh', 'regress_rls_carol'),
(8, 'fgh', 'regress_rls_carol');
CREATE POLICY p0 ON x1 FOR ALL USING (c = current_user);
CREATE POLICY p1 ON x1 FOR SELECT USING (a % 2 = 0);
CREATE POLICY p2 ON x1 FOR INSERT WITH CHECK (a % 2 = 1);
CREATE POLICY p3 ON x1 FOR UPDATE USING (a % 2 = 0);
CREATE POLICY p4 ON x1 FOR DELETE USING (a < 8);
ALTER TABLE x1 ENABLE ROW LEVEL SECURITY;
SET SESSION AUTHORIZATION regress_rls_bob;
SELECT * FROM x1 WHERE f_leak(b) ORDER BY a ASC;
UPDATE x1 SET b = b || '_updt' WHERE f_leak(b) RETURNING *;
SET SESSION AUTHORIZATION regress_rls_carol;
SELECT * FROM x1 WHERE f_leak(b) ORDER BY a ASC;
UPDATE x1 SET b = b || '_updt' WHERE f_leak(b) RETURNING *;
DELETE FROM x1 WHERE f_leak(b) RETURNING *;
--
-- Duplicate Policy Names
--
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE TABLE y1 (a int, b text);
CREATE TABLE y2 (a int, b text);
GRANT ALL ON y1, y2 TO regress_rls_bob;
CREATE POLICY p1 ON y1 FOR ALL USING (a % 2 = 0);
CREATE POLICY p2 ON y1 FOR SELECT USING (a > 2);
CREATE POLICY p1 ON y1 FOR SELECT USING (a % 2 = 1); --fail
CREATE POLICY p1 ON y2 FOR ALL USING (a % 2 = 0); --OK
ALTER TABLE y1 ENABLE ROW LEVEL SECURITY;
ALTER TABLE y2 ENABLE ROW LEVEL SECURITY;
--
-- Expression structure with SBV
--
-- Create view as table owner. RLS should NOT be applied.
SET SESSION AUTHORIZATION regress_rls_alice;
CREATE VIEW rls_sbv WITH (security_barrier) AS
SELECT * FROM y1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM rls_sbv WHERE (a = 1);
DROP VIEW rls_sbv;
-- Create view as role that does not own table. RLS should be applied.
SET SESSION AUTHORIZATION regress_rls_bob;
CREATE VIEW rls_sbv WITH (security_barrier) AS
SELECT * FROM y1 WHERE f_leak(b);
EXPLAIN (COSTS OFF) SELECT * FROM rls_sbv WHERE (a = 1);
DROP VIEW rls_sbv;
--
-- Expression structure
--
SET SESSION AUTHORIZATION regress_rls_alice;
INSERT INTO y2 (SELECT x, md5(x::text) FROM generate_series(0,20) x);
CREATE POLICY p2 ON y2 USING (a % 3 = 0);
CREATE POLICY p3 ON y2 USING (a % 4 = 0);
SET SESSION AUTHORIZATION regress_rls_bob;