From: Bo Peng <pengbo@sraoss.co.jp>
Date: Mon, 30 Jun 2025 02:52:28 +0000 (+0900)
Subject: Fix broken scram-sha-256 authentication on big-endian machies.
X-Git-Tag: V4_7_0_BETA1~87
X-Git-Url: http://waps.l3s.uni-hannover.de/gitweb/%20%22mailto:postgres95%40openlink.co.uk%22?a=commitdiff_plain;h=864a1fe114a6af283804f1c3e231ed697a0a8573;p=pgpool2.git

Fix broken scram-sha-256 authentication on big-endian machies.

When scram-sha-256 authentication is performed, a hash function
pg_sha_256_final is used. It was imported from PostgreSQL and it uses
preprocessor define WORDS_BIGENDIAN to judge host machine's
endianness. Although WORDS_BIGENDIAN should be defined while
configure, this part was missed when pg_sha_256_final (and others) was
imported from PostgreSQL. As a result, scram-sha-256 worked only in
little endian machines. This commit fixes the issue by adding
AC_C_BIGENDIAN macro to configure.ac.

Author: Tatsuo Ishii
Reported-by: Christoph Berg
Reviewed-by: pranavkaruvally
Discussion: https://github.com/pgpool/pgpool2/issues/106
Backpatch-through: v4.2
---

diff --git a/configure.ac b/configure.ac
index 881966fbc..bd8283090 100644
--- a/configure.ac
+++ b/configure.ac
@@ -105,7 +105,7 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_TYPE_PID_T
 AC_HEADER_TIME
-
+AC_C_BIGENDIAN
 
 dnl ===== Copied from PostgreSQL's configure start =====
 dnl