From df5489f19fc05621a5902490692de3245528d424 Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@debian.org>
Date: Tue, 15 Feb 2022 18:25:35 +0000
Subject: Work around RSA SHA-2 signature issues in conch

This was supposed to be fixed in Twisted upstream
(https://twistedmatrix.com/trac/ticket/9765), and that fix is in Debian
now.  However, regression tests still seem to fail in GitLab CI but not
locally (see e.g.
https://salsa.debian.org/ssh-team/openssh/-/jobs/3513178).  Leave this
in place for now until we figure out what's wrong.

Forwarded: not-needed
Last-Update: 2022-11-14

Patch-Name: conch-ssh-rsa.patch
---
 regress/test-exec.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/regress/test-exec.sh b/regress/test-exec.sh
index 603848683..09d91e3b8 100644
--- a/regress/test-exec.sh
+++ b/regress/test-exec.sh
@@ -749,6 +749,17 @@ REGRESS_INTEROP_CONCH=no
 if test -x "$CONCH" ; then
 	REGRESS_INTEROP_CONCH=yes
 fi
+case "$SCRIPT" in
+*conch*)	;;
+*)		REGRESS_INTEROP_CONCH=no
+esac
+
+if test "$REGRESS_INTEROP_CONCH" = "yes" ; then
+	# Work around missing support for RSA SHA-2 signatures:
+	# https://twistedmatrix.com/trac/ticket/9765
+	echo HostKeyAlgorithms +ssh-rsa >> $OBJ/sshd_config
+	echo PubkeyAcceptedAlgorithms +ssh-rsa >> $OBJ/sshd_config
+fi
 
 # If PuTTY is present, new enough and we are running a PuTTY test, prepare
 # keys and configuration.