# $OpenBSD: forwarding.sh,v 1.24 2021/05/07 09:23:40 dtucker Exp $ # Placed in the Public Domain. tid="local and remote forwarding" DATA=/bin/ls${EXEEXT} start_sshd base=33 last=$PORT fwd="" make_tmpdir CTL=${SSH_REGRESS_TMP}/ctl-sock for j in 0 1 2; do for i in 0 1 2; do a=$base$j$i b=`expr $a + 50` c=$last # fwd chain: $a -> $b -> $c fwd="$fwd -L$a:127.0.0.1:$b -R$b:127.0.0.1:$c" last=$a done done trace "start forwarding, fork to background" rm -f $CTL ${SSH} -S $CTL -N -M -F $OBJ/ssh_config -f $fwd somehost trace "transfer over forwarded channels and check result" ${SSH} -F $OBJ/ssh_config -p$last -o 'ConnectionAttempts=10' \ somehost cat ${DATA} > ${COPY} test -s ${COPY} || fail "failed copy of ${DATA}" cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}" ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null for d in L R; do trace "exit on -$d forward failure" # this one should succeed ${SSH} -F $OBJ/ssh_config \ -$d ${base}01:127.0.0.1:$PORT \ -$d ${base}02:127.0.0.1:$PORT \ -$d ${base}03:127.0.0.1:$PORT \ -$d ${base}04:127.0.0.1:$PORT \ -oExitOnForwardFailure=yes somehost true if [ $? != 0 ]; then fatal "connection failed, should not" else # this one should fail ${SSH} -q -F $OBJ/ssh_config \ -$d ${base}01:127.0.0.1:$PORT \ -$d ${base}02:127.0.0.1:$PORT \ -$d ${base}03:127.0.0.1:$PORT \ -$d ${base}01:localhost:$PORT \ -$d ${base}04:127.0.0.1:$PORT \ -oExitOnForwardFailure=yes somehost true r=$? if [ $r != 255 ]; then fail "connection not termintated, but should ($r)" fi fi done trace "simple clear forwarding" ${SSH} -F $OBJ/ssh_config -oClearAllForwardings=yes somehost true trace "clear local forward" rm -f $CTL ${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -L ${base}01:127.0.0.1:$PORT \ -oClearAllForwardings=yes somehost if [ $? != 0 ]; then fail "connection failed with cleared local forwarding" else # this one should fail ${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \ >>$TEST_REGRESS_LOGFILE 2>&1 && \ fail "local forwarding not cleared" fi ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null trace "clear remote forward" rm -f $CTL ${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -R ${base}01:127.0.0.1:$PORT \ -oClearAllForwardings=yes somehost if [ $? != 0 ]; then fail "connection failed with cleared remote forwarding" else # this one should fail ${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \ >>$TEST_REGRESS_LOGFILE 2>&1 && \ fail "remote forwarding not cleared" fi ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null trace "stdio forwarding" cmd="${SSH} -F $OBJ/ssh_config" $cmd -o "ProxyCommand $cmd -q -W localhost:$PORT somehost" somehost true if [ $? != 0 ]; then fail "stdio forwarding" fi echo "LocalForward ${base}01 127.0.0.1:$PORT" >> $OBJ/ssh_config echo "RemoteForward ${base}02 127.0.0.1:${base}01" >> $OBJ/ssh_config trace "config file: start forwarding, fork to background" rm -f $CTL ${SSH} -S $CTL -N -M -F $OBJ/ssh_config -f somehost trace "config file: transfer over forwarded channels and check result" ${SSH} -F $OBJ/ssh_config -p${base}02 -o 'ConnectionAttempts=10' \ somehost cat ${DATA} > ${COPY} test -s ${COPY} || fail "failed copy of ${DATA}" cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}" ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null trace "transfer over chained unix domain socket forwards and check result" rm -f $OBJ/unix-[123].fwd rm -f $CTL $CTL.[123] ${SSH} -S $CTL -N -M -f -F $OBJ/ssh_config -R${base}01:[$OBJ/unix-1.fwd] somehost ${SSH} -S $CTL.1 -N -M -f -F $OBJ/ssh_config -L[$OBJ/unix-1.fwd]:[$OBJ/unix-2.fwd] somehost ${SSH} -S $CTL.2 -N -M -f -F $OBJ/ssh_config -R[$OBJ/unix-2.fwd]:[$OBJ/unix-3.fwd] somehost ${SSH} -S $CTL.3 -N -M -f -F $OBJ/ssh_config -L[$OBJ/unix-3.fwd]:127.0.0.1:$PORT somehost ${SSH} -F $OBJ/ssh_config -p${base}01 -o 'ConnectionAttempts=10' \ somehost cat ${DATA} > ${COPY} test -s ${COPY} || fail "failed copy ${DATA}" cmp ${DATA} ${COPY} || fail "corrupted copy of ${DATA}" ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost 2>/dev/null ${SSH} -F $OBJ/ssh_config -S $CTL.1 -O exit somehost 2>/dev/null ${SSH} -F $OBJ/ssh_config -S $CTL.2 -O exit somehost 2>/dev/null ${SSH} -F $OBJ/ssh_config -S $CTL.3 -O exit somehost 2>/dev/null