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Show default privileges in information schema

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Hitherto, the information schema only showed explicitly granted
privileges that were visible in the *acl catalog columns.  If no
privileges had been granted, the implicit privileges were not shown.

To fix that, add an SQL-accessible version of the acldefault()
function, and use that inside the aclexplode() calls to substitute the
catalog-specific default privilege set for null values.

reviewed by Abhijit Menon-Sen
This commit is contained in:
Peter Eisentraut 2012-01-27 21:58:51 +02:00
parent bf90562aa4
commit b376ec6fa5
7 changed files with 79 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/catalog/information_schema.sql
View File

@ -554,7 +554,7 @@ CREATE VIEW column_privileges AS
pr_c.prtype,
pr_c.grantable,
pr_c.relowner
FROM (SELECT oid, relname, relnamespace, relowner, (aclexplode(relacl)).*
FROM (SELECT oid, relname, relnamespace, relowner, (aclexplode(coalesce(relacl, acldefault('r', relowner)))).*
FROM pg_class
WHERE relkind IN ('r', 'v', 'f')
) pr_c (oid, relname, relnamespace, relowner, grantor, grantee, prtype, grantable),
@ -571,8 +571,8 @@ CREATE VIEW column_privileges AS
pr_a.prtype,
pr_a.grantable,
c.relowner
FROM (SELECT attrelid, attname, (aclexplode(attacl)).*
FROM pg_attribute
FROM (SELECT attrelid, attname, (aclexplode(coalesce(attacl, acldefault('c', relowner)))).*
FROM pg_attribute a JOIN pg_class cc ON (a.attrelid = cc.oid)
WHERE attnum > 0
AND NOT attisdropped
) pr_a (attrelid, attname, grantor, grantee, prtype, grantable),
@ -1276,7 +1276,7 @@ CREATE VIEW routine_privileges AS
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
FROM (
SELECT oid, proname, proowner, pronamespace, (aclexplode(proacl)).* FROM pg_proc
SELECT oid, proname, proowner, pronamespace, (aclexplode(coalesce(proacl, acldefault('f', proowner)))).* FROM pg_proc
) p (oid, proname, proowner, pronamespace, grantor, grantee, prtype, grantable),
pg_namespace n,
pg_authid u_grantor,
@ -1797,7 +1797,7 @@ CREATE VIEW table_privileges AS
CAST(CASE WHEN c.prtype = 'SELECT' THEN 'YES' ELSE 'NO' END AS yes_or_no) AS with_hierarchy
FROM (
SELECT oid, relname, relnamespace, relkind, relowner, (aclexplode(relacl)).* FROM pg_class
SELECT oid, relname, relnamespace, relkind, relowner, (aclexplode(coalesce(relacl, acldefault('r', relowner)))).* FROM pg_class
) AS c (oid, relname, relnamespace, relkind, relowner, grantor, grantee, prtype, grantable),
pg_namespace nc,
pg_authid u_grantor,
@ -2043,7 +2043,7 @@ CREATE VIEW udt_privileges AS
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
FROM (
SELECT oid, typname, typnamespace, typtype, typowner, (aclexplode(typacl)).* FROM pg_type
SELECT oid, typname, typnamespace, typtype, typowner, (aclexplode(coalesce(typacl, acldefault('T', typowner)))).* FROM pg_type
) AS t (oid, typname, typnamespace, typtype, typowner, grantor, grantee, prtype, grantable),
pg_namespace n,
pg_authid u_grantor,
@ -2129,7 +2129,7 @@ CREATE VIEW usage_privileges AS
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
FROM (
SELECT oid, typname, typnamespace, typtype, typowner, (aclexplode(typacl)).* FROM pg_type
SELECT oid, typname, typnamespace, typtype, typowner, (aclexplode(coalesce(typacl, acldefault('T', typowner)))).* FROM pg_type
) AS t (oid, typname, typnamespace, typtype, typowner, grantor, grantee, prtype, grantable),
pg_namespace n,
pg_authid u_grantor,
@ -2166,7 +2166,7 @@ CREATE VIEW usage_privileges AS
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
FROM (
SELECT fdwname, fdwowner, (aclexplode(fdwacl)).* FROM pg_foreign_data_wrapper
SELECT fdwname, fdwowner, (aclexplode(coalesce(fdwacl, acldefault('F', fdwowner)))).* FROM pg_foreign_data_wrapper
) AS fdw (fdwname, fdwowner, grantor, grantee, prtype, grantable),
pg_authid u_grantor,
(
@ -2200,7 +2200,7 @@ CREATE VIEW usage_privileges AS
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable
FROM (
SELECT srvname, srvowner, (aclexplode(srvacl)).* FROM pg_foreign_server
SELECT srvname, srvowner, (aclexplode(coalesce(srvacl, acldefault('S', srvowner)))).* FROM pg_foreign_server
) AS srv (srvname, srvowner, grantor, grantee, prtype, grantable),
pg_authid u_grantor,
(

58
src/backend/utils/adt/acl.c
View File

@ -834,6 +834,64 @@ acldefault(GrantObjectType objtype, Oid ownerId)
}
/*
* SQL-accessible version of acldefault(). Hackish mapping from "char" type to
* ACL_OBJECT_* values, but it's only used in the information schema, not
* documented for general use.
*/
Datum
acldefault_sql(PG_FUNCTION_ARGS)
{
char objtypec = PG_GETARG_CHAR(0);
Oid owner = PG_GETARG_OID(1);
GrantObjectType objtype = 0;
switch (objtypec)
{
case 'c':
objtype = ACL_OBJECT_COLUMN;
break;
case 'r':
objtype = ACL_OBJECT_RELATION;
break;
case 's':
objtype = ACL_OBJECT_SEQUENCE;
break;
case 'd':
objtype = ACL_OBJECT_DATABASE;
break;
case 'f':
objtype = ACL_OBJECT_FUNCTION;
break;
case 'l':
objtype = ACL_OBJECT_LANGUAGE;
break;
case 'L':
objtype = ACL_OBJECT_LARGEOBJECT;
break;
case 'n':
objtype = ACL_OBJECT_NAMESPACE;
break;
case 't':
objtype = ACL_OBJECT_TABLESPACE;
break;
case 'F':
objtype = ACL_OBJECT_FDW;
break;
case 'S':
objtype = ACL_OBJECT_FOREIGN_SERVER;
break;
case 'T':
objtype = ACL_OBJECT_TYPE;
break;
default:
elog(ERROR, "unrecognized objtype abbreviation: %c", objtypec);
}
PG_RETURN_ACL_P(acldefault(objtype, owner));
}
/*
* Update an ACL array to add or remove specified privileges.
*

2
src/include/catalog/catversion.h
View File

@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201201262
#define CATALOG_VERSION_NO 201201271
#endif

2
src/include/catalog/pg_proc.h
View File

@ -1094,6 +1094,8 @@ DESCR("contains");
DATA(insert OID = 1062 ( aclitemeq PGNSP PGUID 12 1 0 0 0 f f f t f i 2 0 16 "1033 1033" _null_ _null_ _null_ _null_ aclitem_eq _null_ _null_ _null_ ));
DATA(insert OID = 1365 ( makeaclitem PGNSP PGUID 12 1 0 0 0 f f f t f i 4 0 1033 "26 26 25 16" _null_ _null_ _null_ _null_ makeaclitem _null_ _null_ _null_ ));
DESCR("make ACL item");
DATA(insert OID = 3943 ( acldefault PGNSP PGUID 12 1 0 0 0 f f f t f i 2 0 1034 "18 26" _null_ _null_ _null_ _null_ acldefault_sql _null_ _null_ _null_ ));
DESCR("TODO");
DATA(insert OID = 1689 ( aclexplode PGNSP PGUID 12 1 10 0 0 f f f t t s 1 0 2249 "1034" "{1034,26,26,25,16}" "{i,o,o,o,o}" "{acl,grantor,grantee,privilege_type,is_grantable}" _null_ aclexplode _null_ _null_ _null_ ));
DESCR("convert ACL item array to table, for use by information schema");
DATA(insert OID = 1044 ( bpcharin PGNSP PGUID 12 1 0 0 0 f f f t f i 3 0 1042 "2275 26 23" _null_ _null_ _null_ _null_ bpcharin _null_ _null_ _null_ ));

1
src/include/utils/acl.h
View File

@ -245,6 +245,7 @@ extern Datum aclcontains(PG_FUNCTION_ARGS);
extern Datum makeaclitem(PG_FUNCTION_ARGS);
extern Datum aclitem_eq(PG_FUNCTION_ARGS);
extern Datum hash_aclitem(PG_FUNCTION_ARGS);
extern Datum acldefault_sql(PG_FUNCTION_ARGS);
extern Datum aclexplode(PG_FUNCTION_ARGS);
/*

8
src/test/regress/expected/foreign_data.out
View File

@ -896,7 +896,7 @@ SELECT * FROM information_schema.user_mapping_options ORDER BY lower(authorizati
regress_test_role | regression | t1 | username | bob
(7 rows)
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
grantor | grantee | object_catalog | object_schema | object_name | object_type | privilege_type | is_grantable
-------------------+-----------------------+----------------+---------------+-------------+----------------------+----------------+--------------
foreign_data_user | foreign_data_user | regression | | foo | FOREIGN DATA WRAPPER | USAGE | YES
@ -905,7 +905,7 @@ SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIG
foreign_data_user | regress_test_role2 | regression | | s6 | FOREIGN SERVER | USAGE | YES
(4 rows)
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
grantor | grantee | object_catalog | object_schema | object_name | object_type | privilege_type | is_grantable
-------------------+-----------------------+----------------+---------------+-------------+----------------------+----------------+--------------
foreign_data_user | foreign_data_user | regression | | foo | FOREIGN DATA WRAPPER | USAGE | YES
@ -939,14 +939,14 @@ SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;
regress_test_role | regression | t1 | username | bob
(5 rows)
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
grantor | grantee | object_catalog | object_schema | object_name | object_type | privilege_type | is_grantable
-------------------+-----------------------+----------------+---------------+-------------+----------------------+----------------+--------------
foreign_data_user | regress_test_indirect | regression | | foo | FOREIGN DATA WRAPPER | USAGE | NO
foreign_data_user | regress_test_role2 | regression | | s6 | FOREIGN SERVER | USAGE | YES
(2 rows)
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
grantor | grantee | object_catalog | object_schema | object_name | object_type | privilege_type | is_grantable
-------------------+-----------------------+----------------+---------------+-------------+----------------------+----------------+--------------
foreign_data_user | regress_test_indirect | regression | | foo | FOREIGN DATA WRAPPER | USAGE | NO

8
src/test/regress/sql/foreign_data.sql
View File

@ -362,14 +362,14 @@ SELECT * FROM information_schema.foreign_servers ORDER BY 1, 2;
SELECT * FROM information_schema.foreign_server_options ORDER BY 1, 2, 3;
SELECT * FROM information_schema.user_mappings ORDER BY lower(authorization_identifier), 2, 3;
SELECT * FROM information_schema.user_mapping_options ORDER BY lower(authorization_identifier), 2, 3, 4;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.foreign_tables ORDER BY 1, 2, 3;
SELECT * FROM information_schema.foreign_table_options ORDER BY 1, 2, 3, 4;
SET ROLE regress_test_role;
SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.usage_privileges WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
SELECT * FROM information_schema.role_usage_grants WHERE object_type LIKE 'FOREIGN%' AND object_name IN ('s6', 'foo') ORDER BY 1, 2, 3, 4, 5;
DROP USER MAPPING FOR current_user SERVER t1;
SET ROLE regress_test_role2;
SELECT * FROM information_schema.user_mapping_options ORDER BY 1, 2, 3, 4;