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