1#	$OpenBSD: agent-getpeereid.sh,v 1.15 2023/02/08 08:06:03 dtucker Exp $
2#	$OpenBSD: agent-getpeereid.sh,v 1.13 2021/09/01 00:50:27 dtucker Exp $
3#	Placed in the Public Domain.
4
5tid="disallow agent attach from other uid"
6
7UNPRIV=nobody
8ASOCK=${OBJ}/agent
9SSH_AUTH_SOCK=/nonexistent
10>$OBJ/ssh-agent.log
11>$OBJ/ssh-add.log
12
13if config_defined HAVE_GETPEEREID HAVE_GETPEERUCRED HAVE_SO_PEERCRED ; then
14	:
15else
16	skip "skipped (not supported on this platform)"
17fi
18if test "x$USER" = "xroot"; then
19	skip "skipped (running as root)"
20fi
21case "x$SUDO" in
22	xsudo) sudo=1;;
23	xdoas|xdoas\ *) ;;
24	x)
25		skip "need SUDO to switch to uid $UNPRIV" ;;
26	*)
27		skip "unsupported $SUDO - "doas" and "sudo" are allowed" ;;
28esac
29
30trace "start agent"
31eval `${SSHAGENT} ${EXTRA_AGENT_ARGS} -s -a ${ASOCK}` >$OBJ/ssh-agent.log 2>&1
32r=$?
33if [ $r -ne 0 ]; then
34	fail "could not start ssh-agent: exit code $r"
35else
36	chmod 644 ${SSH_AUTH_SOCK}
37
38	${SSHADD} -vvv -l >>$OBJ/ssh-add.log 2>&1
39	r=$?
40	if [ $r -ne 1 ]; then
41		fail "ssh-add failed with $r != 1"
42	fi
43	if test -z "$sudo" ; then
44		# doas
45		${SUDO} -n -u ${UNPRIV} ${SSHADD} -l 2>/dev/null
46	else
47		# sudo
48		< /dev/null ${SUDO} -S -u ${UNPRIV} ${SSHADD} -vvv -l >>$OBJ/ssh-add.log 2>&1
49	fi
50	r=$?
51	if [ $r -lt 2 ]; then
52		fail "ssh-add did not fail for ${UNPRIV}: $r < 2"
53		cat $OBJ/ssh-add.log
54	fi
55
56	trace "kill agent"
57	${SSHAGENT} -k >>$OBJ/ssh-agent.log 2>&1
58fi
59
60rm -f ${OBJ}/agent
61