Fix/trg fire only altered masks (#89)

* checkpoint to pause this work and cherry pick out trigger fix.

* cherry pick only trigger fix.

* schema updates

Author: michelp

META.json

@@ -2,7 +2,7 @@
     "name": "pgsodium",
     "abstract": "Postgres extension for libsodium functions",
     "description": "pgsodium is a PostgreSQL extension that exposes modern libsodium based cryptographic functions to SQL.",
-    "version": "3.1.7",
+    "version": "3.1.8",
     "maintainer": [
         "Michel Pelletier <pelletier.michel@gmail.com>"
     ],
@@ -13,7 +13,7 @@
             "abstract": "Postgres extension for libsodium functions",
             "file": "src/pgsodium.h",
             "docfile": "README.md",
-            "version": "3.1.7"
+            "version": "3.1.8"
         }
     },
     "prereqs": {

example/tce.sql

@@ -10,7 +10,8 @@ CREATE SCHEMA "tce-example";
 SET search_path = "tce-example", pg_catalog;
 
 CREATE TABLE test (
-  secret text
+  secret text,
+  name text unique
 );
 
 CREATE TABLE test2 (

pgsodium.control

@@ -1,5 +1,5 @@
 # pgsodium extension
 comment = 'Postgres extension for libsodium functions'
-default_version = '3.1.7'
+default_version = '3.1.8'
 relocatable = false
 schema = pgsodium

sql/pgsodium--3.1.7--3.1.8.sql

@@ -0,0 +1,34 @@
+
+CREATE OR REPLACE FUNCTION pgsodium.trg_mask_update()
+RETURNS EVENT_TRIGGER AS
+$$
+DECLARE
+  r record;
+BEGIN
+  IF (SELECT bool_or(in_extension) FROM pg_event_trigger_ddl_commands()) THEN
+    RAISE NOTICE 'skipping pgsodium mask regeneration in extension';
+	RETURN;
+  END IF;
+
+  FOR r IN
+    SELECT e.*
+    FROM pg_event_trigger_ddl_commands() e
+    WHERE EXISTS (
+      SELECT FROM pg_catalog.pg_class c
+      JOIN pg_catalog.pg_seclabel s ON s.classoid = c.tableoid
+                                   AND s.objoid = c.oid
+      WHERE c.tableoid = e.classid
+        AND e.objid = c.oid
+        AND s.provider = 'pgsodium'
+    )
+  LOOP
+    IF r.object_type in ('table', 'table column')
+    THEN
+      PERFORM pgsodium.update_mask(r.objid);
+    END IF;
+  END LOOP;
+END
+$$
+  LANGUAGE plpgsql
+  SET search_path=''
+;

test/pgsodium_schema.sql

@@ -8,7 +8,7 @@ SELECT cmp_ok(current_setting('server_version_num')::int, '>=', 130000, format('
 
 
 ---- EXTENSION VERSION
-SELECT results_eq('SELECT pgsodium.version()', $$VALUES ('3.1.7'::text)$$, 'Version of pgsodium is 3.1.7');
+SELECT results_eq('SELECT pgsodium.version()', $$VALUES ('3.1.8'::text)$$, 'Version of pgsodium is 3.1.8');
 
 
 ---- EXTENSION OBJECTS
@@ -5604,7 +5604,7 @@ SELECT function_privs_are('pgsodium'::name, proname, proargtypes::regtype[]::tex
     AND oidvectortypes(proargtypes) = 'bytea';
 
 SELECT unnest(ARRAY[
-    is(md5(prosrc), '4db22ce073ebb842d305c906da664e72',
+    is(md5(prosrc), 'b8b02682e0138dc894512f55587db8d4',
        format('Function pgsodium.%s(%s) body should match checksum',
               proname, pg_get_function_identity_arguments(oid))
     ),

test/test.sql

@@ -27,6 +27,8 @@ SELECT * FROM no_plan();
 
 SET search_path = pgsodium, public;
 
+select (current_setting('server_version_num')::int / 10000) = 15 pg15 \gset
+
 \ir random.sql
 \ir secretbox.sql
 \ir secretstream.sql