openssh-portable/regress/agent-getpeereid.sh

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# $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=${OBJ}/agent
SSH_AUTH_SOCK=/nonexistent
if config_defined HAVE_GETPEEREID HAVE_GETPEERUCRED HAVE_SO_PEERCRED ; then
:
else
skip "skipped (not supported on this platform)"
fi
if test "x$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 ${ASOCK}` > /dev/null
r=$?
if [ $r -ne 0 ]; then
fail "could not start ssh-agent: exit code $r"
else
chmod 644 ${SSH_AUTH_SOCK}
${SSHADD} -l > /dev/null 2>&1
r=$?
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} ${SSHADD} -l 2>/dev/null
fi
r=$?
if [ $r -lt 2 ]; then
fail "ssh-add did not fail for ${UNPRIV}: $r < 2"
fi
trace "kill agent"
${SSHAGENT} -k > /dev/null
fi
rm -f ${OBJ}/agent