RE: fixed RE of triggers when user does not have USAGE role

Author: Vitalii4as

reverse_engineering/helpers/queryConstants.js

@@ -282,30 +282,65 @@ const queryConstants = {
 	GET_DATABASES:
 		'SELECT datname AS database_name FROM pg_catalog.pg_database WHERE datistemplate != TRUE AND datallowconn = TRUE;',
 	GET_TRIGGERS: `
-        SELECT 
-        	trigger_name,
-        	array_agg(event_manipulation::text) AS trigger_events,
-        	event_object_schema,
-        	event_object_table,
-        	action_orientation,
-        	action_timing,
-        	action_reference_old_table,
-        	action_reference_new_table,
-        	action_condition,
-        	action_statement 
-        FROM information_schema.triggers
+        SELECT trigger_name,
+                array_agg(event_manipulation::text) AS trigger_events,
+                event_object_schema,
+                event_object_table,
+                action_orientation,
+                action_timing,
+                action_reference_old_table,
+                action_reference_new_table,
+                action_condition,
+                action_statement
+        FROM
+            -- This is information_schema.triggers view but without permitions
+            (SELECT (current_database())::information_schema.sql_identifier AS trigger_catalog,
+                    (n.nspname)::information_schema.sql_identifier AS trigger_schema,
+                    (t.tgname)::information_schema.sql_identifier AS trigger_name,
+                    (em.text)::information_schema.character_data AS event_manipulation,
+                    (current_database())::information_schema.sql_identifier AS event_object_catalog,
+                    (n.nspname)::information_schema.sql_identifier AS event_object_schema,
+                    (c.relname)::information_schema.sql_identifier AS event_object_table,
+                    (rank() OVER (PARTITION BY (n.nspname)::information_schema.sql_identifier,
+                                               (c.relname)::information_schema.sql_identifier,
+                                               em.num, ((t.tgtype)::integer & 1), ((t.tgtype)::integer & 66)
+                                  ORDER BY t.tgname))::information_schema.cardinal_number AS action_order,
+                    (regexp_match(pg_get_triggerdef(t.oid), '.{35,} WHEN \((.+)\) EXECUTE FUNCTION'::text))[1]::information_schema.character_data AS action_condition,
+                    (SUBSTRING(pg_get_triggerdef(t.oid)
+                               FROM (POSITION(('EXECUTE FUNCTION'::text) IN (SUBSTRING(pg_get_triggerdef(t.oid)
+                                                                                       FROM 48))) + 47)))::information_schema.character_data AS action_statement,
+                    (CASE ((t.tgtype)::integer & 1)
+                         WHEN 1 THEN 'ROW'::text
+                         ELSE 'STATEMENT'::text
+                     END)::information_schema.character_data AS action_orientation,
+                    (CASE ((t.tgtype)::integer & 66)
+                         WHEN 2 THEN 'BEFORE'::text
+                         WHEN 64 THEN 'INSTEAD OF'::text
+                         ELSE 'AFTER'::text
+                     END)::information_schema.character_data AS action_timing,
+                    (t.tgoldtable)::information_schema.sql_identifier AS action_reference_old_table,
+                    (t.tgnewtable)::information_schema.sql_identifier AS action_reference_new_table,
+                    (NULL::timestamp with time zone)::information_schema.time_stamp AS created
+                FROM pg_namespace n,
+                        pg_class c,
+                        pg_trigger t, (VALUES (4,'INSERT'::text), (8,'DELETE'::text), (16,'UPDATE'::text)) em(num, text)
+                WHERE ((n.oid = c.relnamespace)
+                        AND (c.oid = t.tgrelid)
+                        AND (((t.tgtype)::integer & em.num) <> 0)
+                        AND (NOT t.tgisinternal)
+                        AND (NOT pg_is_other_temp_schema(n.oid)))) AS tmp_views
         WHERE event_object_schema = $1 AND event_object_table = $2
-        GROUP BY 
-        	trigger_schema,
-        	trigger_name,
-        	event_object_schema,
-        	event_object_table,
-        	action_orientation,
-        	action_timing,
-        	action_reference_old_table,
-        	action_reference_new_table,
-        	action_condition,
-        	action_statement;`,
+        GROUP BY
+                trigger_schema,
+                trigger_name,
+                event_object_schema,
+                event_object_table,
+                action_orientation,
+                action_timing,
+                action_reference_old_table,
+                action_reference_new_table,
+                action_condition,
+                action_statement;`,
 	GET_TRIGGERS_ADDITIONAL_DATA: `
         SELECT
                 pg_catalog.obj_description(pg_trigger.oid, 'pg_trigger') AS description,