Re: SCRAM authentication, take three

On Fri, Mar 3, 2017 at 2:43 PM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> I am attaching 0009 and 0010 that address those problems (pushed on
> github as well) that can be applied on top of the latest set.

While doing more tests with my module able to do SASLprep, I have
noticed that calculations related to Hangul characters were incorrect:
/* Constants for calculations wih Hangul characters */
-#define SBASE 0xAC00
-#define LBASE 0x1100
-#define VBASE 0x1161
-#define TBASE 0x11A7
+#define SBASE 0xEAB080 /* U+AC00 */
+#define LBASE 0xE18480 /* U+1100 */
+#define VBASE 0xE185A1 /* U+1161 */
+#define TBASE 0xE186A7 /* U+11A7 */

Once the following is applied things get better:
-- Test for U+FB01, Latin Small Ligature Fi
=# select array_to_utf8(pg_sasl_prepare(utf8_to_array('fi')));
array_to_utf8
---------------
fi
(1 row)
-- Test for U+1E9B, Latin Small Letter Long S with Dot Above
-- This one was failing previously.
=# select array_to_utf8(pg_sasl_prepare(utf8_to_array('ẛ')));
array_to_utf8
---------------
ṡ
(1 row)
-- Test for U+2075, superscript 5
=# select array_to_utf8(pg_sasl_prepare(utf8_to_array('⁵')));
array_to_utf8
---------------
5
(1 row)
--
Michael