regress/forwarding.sh

   1 #       $OpenBSD: forwarding.sh,v 1.20 2017/04/30 23:34:55 djm Exp $
   2 #       Placed in the Public Domain.
   3
   4 tid="local and remote forwarding"
   5
   6 DATA=/bin/ls${EXEEXT}
   7
   8 start_sshd
   9
  10 base=33
  11 last=$PORT
  12 fwd=""
  13 make_tmpdir
  14 CTL=${SSH_REGRESS_TMP}/ctl-sock
  15
  16 for j in 0 1 2; do
  17         for i in 0 1 2; do
  18                 a=$base$j$i
  19                 b=`expr $a + 50`
  20                 c=$last
  21                 # fwd chain: $a -> $b -> $c
  22                 fwd="$fwd -L$a:127.0.0.1:$b -R$b:127.0.0.1:$c"
  23                 last=$a
  24         done
  25 done
  26
  27 trace "start forwarding, fork to background"
  28 rm -f $CTL
  29 ${SSH} -S $CTL -M -F $OBJ/ssh_config -f $fwd somehost sleep 10
  30
  31 trace "transfer over forwarded channels and check result"
  32 ${SSH} -F $OBJ/ssh_config -p$last -o 'ConnectionAttempts=4' \
  33         somehost cat ${DATA} > ${COPY}
  34 test -s ${COPY}         || fail "failed copy of ${DATA}"
  35 cmp ${DATA} ${COPY}     || fail "corrupted copy of ${DATA}"
  36
  37 ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost
  38
  39 for d in L R; do
  40         trace "exit on -$d forward failure"
  41
  42         # this one should succeed
  43         ${SSH}  -F $OBJ/ssh_config \
  44             -$d ${base}01:127.0.0.1:$PORT \
  45             -$d ${base}02:127.0.0.1:$PORT \
  46             -$d ${base}03:127.0.0.1:$PORT \
  47             -$d ${base}04:127.0.0.1:$PORT \
  48             -oExitOnForwardFailure=yes somehost true
  49         if [ $? != 0 ]; then
  50                 fatal "connection failed, should not"
  51         else
  52                 # this one should fail
  53                 ${SSH} -q -F $OBJ/ssh_config \
  54                     -$d ${base}01:127.0.0.1:$PORT \
  55                     -$d ${base}02:127.0.0.1:$PORT \
  56                     -$d ${base}03:127.0.0.1:$PORT \
  57                     -$d ${base}01:localhost:$PORT \
  58                     -$d ${base}04:127.0.0.1:$PORT \
  59                     -oExitOnForwardFailure=yes somehost true
  60                 r=$?
  61                 if [ $r != 255 ]; then
  62                         fail "connection not termintated, but should ($r)"
  63                 fi
  64         fi
  65 done
  66
  67 trace "simple clear forwarding"
  68 ${SSH} -F $OBJ/ssh_config -oClearAllForwardings=yes somehost true
  69
  70 trace "clear local forward"
  71 rm -f $CTL
  72 ${SSH} -S $CTL -M -f -F $OBJ/ssh_config -L ${base}01:127.0.0.1:$PORT \
  73     -oClearAllForwardings=yes somehost sleep 10
  74 if [ $? != 0 ]; then
  75         fail "connection failed with cleared local forwarding"
  76 else
  77         # this one should fail
  78         ${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \
  79              >>$TEST_REGRESS_LOGFILE 2>&1 && \
  80                 fail "local forwarding not cleared"
  81 fi
  82 ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost
  83
  84 trace "clear remote forward"
  85 rm -f $CTL
  86 ${SSH} -S $CTL -M -f -F $OBJ/ssh_config -R ${base}01:127.0.0.1:$PORT \
  87     -oClearAllForwardings=yes somehost sleep 10
  88 if [ $? != 0 ]; then
  89         fail "connection failed with cleared remote forwarding"
  90 else
  91         # this one should fail
  92         ${SSH} -F $OBJ/ssh_config -p ${base}01 somehost true \
  93              >>$TEST_REGRESS_LOGFILE 2>&1 && \
  94                 fail "remote forwarding not cleared"
  95 fi
  96 ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost
  97
  98 trace "stdio forwarding"
  99 cmd="${SSH} -F $OBJ/ssh_config"
 100 $cmd -o "ProxyCommand $cmd -q -W localhost:$PORT somehost" somehost true
 101 if [ $? != 0 ]; then
 102         fail "stdio forwarding"
 103 fi
 104
 105 echo "LocalForward ${base}01 127.0.0.1:$PORT" >> $OBJ/ssh_config
 106 echo "RemoteForward ${base}02 127.0.0.1:${base}01" >> $OBJ/ssh_config
 107
 108 trace "config file: start forwarding, fork to background"
 109 rm -f $CTL
 110 ${SSH} -S $CTL -M -F $OBJ/ssh_config -f somehost sleep 10
 111
 112 trace "config file: transfer over forwarded channels and check result"
 113 ${SSH} -F $OBJ/ssh_config -p${base}02 -o 'ConnectionAttempts=4' \
 114         somehost cat ${DATA} > ${COPY}
 115 test -s ${COPY}         || fail "failed copy of ${DATA}"
 116 cmp ${DATA} ${COPY}     || fail "corrupted copy of ${DATA}"
 117
 118 ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost
 119
 120 trace "transfer over chained unix domain socket forwards and check result"
 121 rm -f $OBJ/unix-[123].fwd
 122 rm -f $CTL $CTL.[123]
 123 ${SSH} -S $CTL -M -f -F $OBJ/ssh_config -R${base}01:[$OBJ/unix-1.fwd] somehost sleep 10
 124 ${SSH} -S $CTL.1 -M -f -F $OBJ/ssh_config -L[$OBJ/unix-1.fwd]:[$OBJ/unix-2.fwd] somehost sleep 10
 125 ${SSH} -S $CTL.2 -M -f -F $OBJ/ssh_config -R[$OBJ/unix-2.fwd]:[$OBJ/unix-3.fwd] somehost sleep 10
 126 ${SSH} -S $CTL.3 -M -f -F $OBJ/ssh_config -L[$OBJ/unix-3.fwd]:127.0.0.1:$PORT somehost sleep 10
 127 ${SSH} -F $OBJ/ssh_config -p${base}01 -o 'ConnectionAttempts=4' \
 128         somehost cat ${DATA} > ${COPY}
 129 test -s ${COPY}                 || fail "failed copy ${DATA}"
 130 cmp ${DATA} ${COPY}             || fail "corrupted copy of ${DATA}"
 131
 132 ${SSH} -F $OBJ/ssh_config -S $CTL -O exit somehost
 133 ${SSH} -F $OBJ/ssh_config -S $CTL.1 -O exit somehost
 134 ${SSH} -F $OBJ/ssh_config -S $CTL.2 -O exit somehost
 135 ${SSH} -F $OBJ/ssh_config -S $CTL.3 -O exit somehost
 136