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# $OpenBSD: agent-getpeereid.sh,v 1.8 2017/01/06 02:51:16 djm Exp $
# Placed in the Public Domain.
tid="disallow agent attach from other uid"
UNPRIV=nobody
ASOCK=${OBJ}/agent
SSH_AUTH_SOCK=/nonexistent
case "x$SUDO" in
xsudo) sudo=1;;
xdoas) ;;
x)
if [ -x /usr/local/bin/sudo -a -f /etc/sudoers ]; then
sudo=1
SUDO=/usr/local/sbin/sudo
elif [ -f /etc/doas.conf ]; then
SUDO=/usr/bin/doas
else
fatal "need SUDO to switch to uid $UNPRIV," \
"test won't work without"
fi ;;
*) fatal 'unsupported $SUDO - "doas" and "sudo" are allowed' ;;
esac
trace "start agent"
eval `${SSHAGENT} -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
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