![]() ![]() One other key idea to discuss is the Principle of Least Privilege (PoLP), an information security methodology that states users should only be granted access to the least amount of information needed to do their job or task. It does not mean that multiple servers are setup in a multi-node environment. This is the way that PostgreSQL refers to the individual server/instance that’s running and hosting (a cluster of) databases. If you are new to PostgreSQL, this term may really confuse you. Throughout this article you will see references to a PostgreSQL cluster. This is typically done by granting group roles (those that cannot login) to user roles (those that can login) to assist with privilege management.ĭepending on your previous experience with information security (within a database, operating system, or application), the way that these components work together in PostgreSQL may be different than you would expect. Privileges assigned to one role can be granted to other roles. Often these will be applied at a database or schema level, but the ability to apply specific access to individual objects is always available. Privileges: The types of access that can be granted to a role for a database object.Databases, schema, tables, views, procedures, functions, and more can each have different privileges applied to them for any role. Database Objects: Anything that can be created or accessed in the PostgreSQL cluster is referred to as an object.Please note, while the CREATE USER and CREATE GROUP commands still exist, they are simply aliases for CREATE ROLE. By convention, a ROLE that allows login is considered a user, while a role that is not allowed to login is a group. Roles: There is only one type of authentication principal in PostgreSQL, a ROLE, which exists at the cluster level.This can be through password, trust, or some other federated login (like Kerberos)Īs an authenticated user, what am I permitted to do within the system?īefore we get started, lets establish a few terms: WHERE acl_antor_oid acl_base.Verify that the user is who they claim to be. ( aclexplode ( acl ) ).is_grantable AS is_grantable ( aclexplode ( acl ) ).privilege_type AS privilege_type, ![]() ( aclexplode ( acl ) ).grantee AS grantee_oid, ( aclexplode ( acl ) ).grantor AS grantor_oid, ON ( schemas.schema_oid = t.typnamespace )Ĭoalesce ( p.fdwacl, acldefault ( 'F'::"char", p.fdwowner ) ) AS aclĬoalesce ( p.srvacl, acldefault ( 'S'::"char", p.srvowner ) ) AS acl ON ( schemas.schema_oid = p.pronamespace )Ĭoalesce ( t.typacl, acldefault ( 'T'::"char", t.typowner ) ) AS acl Pg_catalog.pg_get_function_arguments ( p.oid ) AS calling_arguments,Ĭoalesce ( p.proacl, acldefault ( 'f'::"char", p.proowner ) ) AS acl ![]() WHERE c.relkind IN ( 'r', 'v', 'm', 'S', 'f', 'p' )Ĭ.object_name || '.' || a.attname::text AS object_name,Ĭoalesce ( a.attacl, acldefault ( 'c'::"char", c.owner_oid ) ) AS acl ON ( schemas.schema_oid = c.relnamespace ) WHEN c.relkind = 'S' THEN coalesce ( c.relacl, acldefault ( 's'::"char", c.relowner ) )ĮLSE coalesce ( c.relacl, acldefault ( 'r'::"char", c.relowner ) ) WHEN c.relkind = 'I' THEN 'partitioned index' WHEN c.relkind = 'p' THEN 'partitioned table' WHEN c.relkind = 'f' THEN 'foreign table' WHEN c.relkind = 'm' THEN 'materialized view' WITH rol AS (Ĭoalesce ( n.nspacl, acldefault ( 'n'::"char", n.nspowner ) ) AS acl This updated query also contains column grants and function/procedure signatures. Updated to add an updated query that uses the pg catalog tables instead of the information_schema views. WHERE rug.udt_schema NOT IN ( 'pg_catalog', 'information_schema' )ĪND substr ( rug.udt_schema, 1, 3 ) 'pg_' WHERE rrg.specific_schema NOT IN ( 'pg_catalog', 'information_schema' )įROM information_schema.role_udt_grants rug ON ( fcn.routine_catalog = rrg.routine_catalogĪND fcn.routine_schema = rrg.routine_schemaĪND fcn.routine_name = rrg.routine_name ) LEFT JOIN information_schema.routines fcn WHERE rtg.table_schema NOT IN ( 'pg_catalog', 'information_schema' )įROM information_schema.role_routine_grants rrg ![]() ON ( tab.table_catalog = rtg.table_catalog WHERE rug.object_schema NOT IN ( 'pg_catalog', 'information_schema' )įROM information_schema.role_table_grants rtg While the following is not a complete solution (column privs aren't included, it doesn't have the function signatures) you should hopefully be able to get most of what you're asking for using: SELECT rug.grantor,įROM information_schema.role_usage_grants rug ![]()
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