1 files changed, 59 insertions, 0 deletions
diff --git a/regress/agent-getpeereid.sh b/regress/agent-getpeereid.sh
new file mode 100644
index 0000000..79e9c7d
--- /dev/null
+++ b/regress/agent-getpeereid.sh
@@ -0,0 +1,59 @@
+#	$OpenBSD: agent-getpeereid.sh,v 1.13 2021/09/01 00:50:27 dtucker Exp $
+#	Placed in the Public Domain.
+
+tid="disallow agent attach from other uid"
+
+UNPRIV=nobody
+ASOCK=${OBJ}/agent
+SSH_AUTH_SOCK=/nonexistent
+>$OBJ/ssh-agent.log
+>$OBJ/ssh-add.log
+
+if config_defined HAVE_GETPEEREID HAVE_GETPEERUCRED HAVE_SO_PEERCRED ; then
+	:
+else
+	skip "skipped (not supported on this platform)"
+fi
+if test "x$USER" = "xroot"; then
+	skip "skipped (running as root)"
+fi
+case "x$SUDO" in
+	xsudo) sudo=1;;
+	xdoas|xdoas\ *) ;;
+	x)
+		skip "need SUDO to switch to uid $UNPRIV" ;;
+	*)
+		skip "unsupported $SUDO - "doas" and "sudo" are allowed" ;;
+esac
+
+trace "start agent"
+eval `${SSHAGENT} ${EXTRA_AGENT_ARGS} -s -a ${ASOCK}` >$OBJ/ssh-agent.log 2>&1
+r=$?
+if [ $r -ne 0 ]; then
+	fail "could not start ssh-agent: exit code $r"
+else
+	chmod 644 ${SSH_AUTH_SOCK}
+
+	${SSHADD} -vvv -l >>$OBJ/ssh-add.log 2>&1
+	r=$?
+	if [ $r -ne 1 ]; then
+		fail "ssh-add failed with $r != 1"
+	fi
+	if test -z "$sudo" ; then
+		# doas
+		${SUDO} -n -u ${UNPRIV} ${SSHADD} -l 2>/dev/null
+	else
+		# sudo
+		< /dev/null ${SUDO} -S -u ${UNPRIV} ${SSHADD} -vvv -l >>$OBJ/ssh-add.log 2>&1
+	fi
+	r=$?
+	if [ $r -lt 2 ]; then
+		fail "ssh-add did not fail for ${UNPRIV}: $r < 2"
+		cat $OBJ/ssh-add.log
+	fi
+
+	trace "kill agent"
+	${SSHAGENT} -vvv -k >>$OBJ/ssh-agent.log 2>&1
+fi
+
+rm -f ${OBJ}/agent