Initial checkin of a contributed type that handles passwords efficiently.

contrib/chkpass/chkpass.sql

@@ -0,0 +1,82 @@
+--
+--	PostgreSQL code for CHKPASS.
+--  Written by D'Arcy J.M. Cain
+--  darcy@druid.net
+--  http://www.druid.net/darcy/
+-- 
+--  $Header: /cvsroot/pgsql/contrib/chkpass/Attic/chkpass.sql,v 1.1 2001/05/03 12:32:13 darcy Exp $
+--  best viewed with tabs set to 4
+--  %%PGDIR%% changed to your local directory where modules is
+--
+
+load '%%PGDIR%%/modules/chkpass.so';
+
+--
+--	Input and output functions and the type itself:
+--
+
+create function chkpass_in(opaque)
+	returns opaque
+	as '%%PGDIR%%/modules/chkpass.so'
+	language 'c';
+
+create function chkpass_out(opaque)
+	returns opaque
+	as '%%PGDIR%%/modules/chkpass.so'
+	language 'c';
+
+create type chkpass (
+	internallength = 16,
+	externallength = 13,
+	input = chkpass_in,
+	output = chkpass_out
+);
+
+create function raw(chkpass)
+	returns text
+	as '%%PGDIR%%/modules/chkpass.so', 'chkpass_rout'
+	language 'c';
+
+--
+--	The various boolean tests:
+--
+
+create function eq(chkpass, text)
+	returns bool
+	as '%%PGDIR%%/modules/chkpass.so', 'chkpass_eq'
+	language 'c';
+
+create function ne(chkpass, text)
+	returns bool
+	as '%%PGDIR%%/modules/chkpass.so', 'chkpass_ne'
+	language 'c';
+
+--
+--	Now the operators.  Note how some of the parameters to some
+--	of the 'create operator' commands are commented out.  This
+--	is because they reference as yet undefined operators, and
+--	will be implicitly defined when those are, further down.
+--
+
+create operator = (
+	leftarg = chkpass,
+	rightarg = text,
+	commutator = =,
+--	negator = <>,
+	procedure = eq
+);
+
+create operator <> (
+	leftarg = chkpass,
+	rightarg = text,
+	negator = =,
+	procedure = ne
+);
+
+INSERT INTO pg_description (objoid, description)
+	SELECT oid, 'password type with checks'
+		FROM pg_type WHERE typname = 'chkpass';
+
+--
+--	eof
+--