# $OpenBSD: multiplex.sh,v 1.36 2023/03/01 09:29:32 dtucker Exp $ # Placed in the Public Domain. make_tmpdir CTL=${SSH_REGRESS_TMP}/ctl-sock tid="connection multiplexing" trace "will use ProxyCommand $proxycmd" if config_defined DISABLE_FD_PASSING ; then echo "skipped (not supported on this platform)" exit 0 fi P=3301 # test port wait_for_mux_master_ready() { for i in 1 2 3 4 5 6 7 8 9; do ${SSH} -F $OBJ/ssh_config -S $CTL -Ocheck otherhost \ >/dev/null 2>&1 && return 0 sleep $i done fatal "mux master never becomes ready" } maybe_add_scp_path_to_sshd start_sshd start_mux_master() { trace "start master, fork to background" ${SSH} -Nn2 -MS$CTL -F $OBJ/ssh_config -oSendEnv="_XXX_TEST" somehost \ -E $TEST_REGRESS_LOGFILE 2>&1 & # NB. $SSH_PID will be killed by test-exec.sh:cleanup on fatal errors. SSH_PID=$! wait_for_mux_master_ready } start_mux_master verbose "test $tid: setenv" trace "setenv over multiplexed connection" _XXX_TEST=blah ${SSH} -F $OBJ/ssh_config -oSendEnv="_XXX_TEST" -S$CTL otherhost sh << 'EOF' test X"$_XXX_TEST" = X"blah" EOF if [ $? -ne 0 ]; then fail "environment not found" fi verbose "test $tid: envpass" trace "env passing over multiplexed connection" ${SSH} -F $OBJ/ssh_config -oSetEnv="_XXX_TEST=foo" -S$CTL otherhost sh << 'EOF' test X"$_XXX_TEST" = X"foo" EOF if [ $? -ne 0 ]; then fail "environment not found" fi verbose "test $tid: transfer" rm -f ${COPY} trace "ssh transfer over multiplexed connection and check result" ${SSH} -F $OBJ/ssh_config -S$CTL otherhost cat ${DATA} > ${COPY} test -f ${COPY} || fail "ssh -Sctl: failed copy ${DATA}" cmp ${DATA} ${COPY} || fail "ssh -Sctl: corrupted copy of ${DATA}" rm -f ${COPY} trace "ssh transfer over multiplexed connection and check result" ${SSH} -F $OBJ/ssh_config -S $CTL otherhost cat ${DATA} > ${COPY} test -f ${COPY} || fail "ssh -S ctl: failed copy ${DATA}" cmp ${DATA} ${COPY} || fail "ssh -S ctl: corrupted copy of ${DATA}" rm -f ${COPY} trace "sftp transfer over multiplexed connection and check result" echo "get ${DATA} ${COPY}" | \ ${SFTP} -S ${SSH} -F $OBJ/ssh_config -oControlPath=$CTL otherhost >>$TEST_REGRESS_LOGFILE 2>&1 test -f ${COPY} || fail "sftp: failed copy ${DATA}" cmp ${DATA} ${COPY} || fail "sftp: corrupted copy of ${DATA}" rm -f ${COPY} trace "scp transfer over multiplexed connection and check result" ${SCP} -S ${SSH} -F $OBJ/ssh_config -oControlPath=$CTL otherhost:${DATA} ${COPY} >>$TEST_REGRESS_LOGFILE 2>&1 test -f ${COPY} || fail "scp: failed copy ${DATA}" cmp ${DATA} ${COPY} || fail "scp: corrupted copy of ${DATA}" rm -f ${COPY} verbose "test $tid: forward" trace "forward over TCP/IP and check result" $NC -N -l 127.0.0.1 $((${PORT} + 1)) < ${DATA} >`ssh_logfile nc` & netcat_pid=$! ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -L127.0.0.1:$((${PORT} + 2)):127.0.0.1:$((${PORT} + 1)) otherhost >>$TEST_SSH_LOGFILE 2>&1 sleep 1 # XXX remove once race fixed $NC 127.0.0.1 $((${PORT} + 2)) < /dev/null > ${COPY} cmp ${DATA} ${COPY} || fail "ssh: corrupted copy of ${DATA}" kill $netcat_pid 2>/dev/null rm -f ${COPY} $OBJ/unix-[123].fwd trace "forward over UNIX and check result" $NC -N -Ul $OBJ/unix-1.fwd < ${DATA} > /dev/null & netcat_pid=$! ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -L$OBJ/unix-2.fwd:$OBJ/unix-1.fwd otherhost >>$TEST_SSH_LOGFILE 2>&1 ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -R$OBJ/unix-3.fwd:$OBJ/unix-2.fwd otherhost >>$TEST_SSH_LOGFILE 2>&1 sleep 1 # XXX remove once race fixed $NC -U $OBJ/unix-3.fwd < /dev/null > ${COPY} cmp ${DATA} ${COPY} || fail "ssh: corrupted copy of ${DATA}" kill $netcat_pid 2>/dev/null rm -f ${COPY} $OBJ/unix-[123].fwd for s in 0 1 4 5 44; do for mode in "" "-Oproxy"; do trace "exit status $s over multiplexed connection ($mode)" verbose "test $tid: status $s ($mode)" ${SSH} -F $OBJ/ssh_config -S $CTL $mode otherhost exit $s r=$? if [ $r -ne $s ]; then fail "exit code mismatch: $r != $s" fi # same with early close of stdout/err trace "exit status $s with early close over multiplexed connection ($mode)" ${SSH} -F $OBJ/ssh_config -S $CTL -n $mode otherhost \ exec sh -c \'"sleep 2; exec > /dev/null 2>&1; sleep 3; exit $s"\' r=$? if [ $r -ne $s ]; then fail "exit code (with sleep) mismatch: $r != $s" fi done done verbose "test $tid: cmd check" ${SSH} -F $OBJ/ssh_config -S $CTL -Ocheck otherhost >>$TEST_REGRESS_LOGFILE 2>&1 \ || fail "check command failed" verbose "test $tid: cmd forward local (TCP)" ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -L $P:localhost:$PORT otherhost \ || fail "request local forward failed" sleep 1 # XXX remove once race fixed ${SSH} -F $OBJ/ssh_config -p$P otherhost true \ || fail "connect to local forward port failed" ${SSH} -F $OBJ/ssh_config -S $CTL -Ocancel -L $P:localhost:$PORT otherhost \ || fail "cancel local forward failed" ${SSH} -F $OBJ/ssh_config -p$P otherhost true \ && fail "local forward port still listening" verbose "test $tid: cmd forward remote (TCP)" ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -R $P:localhost:$PORT otherhost \ || fail "request remote forward failed" sleep 1 # XXX remove once race fixed ${SSH} -F $OBJ/ssh_config -p$P otherhost true \ || fail "connect to remote forwarded port failed" ${SSH} -F $OBJ/ssh_config -S $CTL -Ocancel -R $P:localhost:$PORT otherhost \ || fail "cancel remote forward failed" ${SSH} -F $OBJ/ssh_config -p$P otherhost true \ && fail "remote forward port still listening" verbose "test $tid: cmd forward local (UNIX)" ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -L $OBJ/unix-1.fwd:localhost:$PORT otherhost \ || fail "request local forward failed" sleep 1 # XXX remove once race fixed echo "" | $NC -U $OBJ/unix-1.fwd | \ grep "Invalid SSH identification string" >/dev/null 2>&1 \ || fail "connect to local forward path failed" ${SSH} -F $OBJ/ssh_config -S $CTL -Ocancel -L $OBJ/unix-1.fwd:localhost:$PORT otherhost \ || fail "cancel local forward failed" N=$(echo "xyzzy" | $NC -U $OBJ/unix-1.fwd 2>&1 | grep "xyzzy" | wc -l) test ${N} -eq 0 || fail "local forward path still listening" rm -f $OBJ/unix-1.fwd verbose "test $tid: cmd forward remote (UNIX)" ${SSH} -F $OBJ/ssh_config -S $CTL -Oforward -R $OBJ/unix-1.fwd:localhost:$PORT otherhost \ || fail "request remote forward failed" sleep 1 # XXX remove once race fixed echo "" | $NC -U $OBJ/unix-1.fwd | \ grep "Invalid SSH identification string" >/dev/null 2>&1 \ || fail "connect to remote forwarded path failed" ${SSH} -F $OBJ/ssh_config -S $CTL -Ocancel -R $OBJ/unix-1.fwd:localhost:$PORT otherhost \ || fail "cancel remote forward failed" N=$(echo "xyzzy" | $NC -U $OBJ/unix-1.fwd 2>&1 | grep "xyzzy" | wc -l) test ${N} -eq 0 || fail "remote forward path still listening" rm -f $OBJ/unix-1.fwd verbose "test $tid: cmd exit" ${SSH} -F $OBJ/ssh_config -S $CTL -Oexit otherhost >>$TEST_REGRESS_LOGFILE 2>&1 \ || fail "send exit command failed" # Wait for master to exit wait $SSH_PID kill -0 $SSH_PID >/dev/null 2>&1 && fail "exit command failed" # Restart master and test -O stop command with master using -N verbose "test $tid: cmd stop" trace "restart master, fork to background" start_mux_master # start a long-running command then immediately request a stop ${SSH} -F $OBJ/ssh_config -S $CTL otherhost "sleep 10; exit 0" \ >>$TEST_REGRESS_LOGFILE 2>&1 & SLEEP_PID=$! ${SSH} -F $OBJ/ssh_config -S $CTL -Ostop otherhost >>$TEST_REGRESS_LOGFILE 2>&1 \ || fail "send stop command failed" # wait until both long-running command and master have exited. wait $SLEEP_PID [ $! != 0 ] || fail "waiting for concurrent command" wait $SSH_PID [ $! != 0 ] || fail "waiting for master stop" kill -0 $SSH_PID >/dev/null 2>&1 && fatal "stop command failed" SSH_PID="" # Already gone, so don't kill in cleanup