optional-tools/make-iptables-restore

   1 #!/bin/bash
   2 iptables="/sbin/iptables"
   3 iptablesrestore="/sbin/iptables-restore"
   4 ifconfig="/sbin/ifconfig"
   5 grep="/bin/grep"
   6 cut="/usr/bin/cut"
   7
   8 #pimp files must be generated by optional-tools/make-pimp utility
   9 pimp_2way_nat="/dev/shm/pimp-2way-nat.tmp"
  10 pimp_snat="/dev/shm/pimp-snat.tmp"
  11 etchosts="/mnt/mtdblock0/hosts"
  12 restoretmp="/dev/shm/iptables-restore.tmp"
  13 restoredata="/mnt/mtdblock0/iptables-restore.in"
  14 wan1="vlan770"
  15 wan2="vlan771"
  16 wan3="vlan772"
  17 wan4="vlan774"
  18 czffirstbitmask="19"
  19 czfsecondbitmask="22"
  20 czfthirdbitmask="25"
  21 czffourthbitmask="28"
  22 pubfirstbitmask="26"
  23 pubsecondbitmask="29"
  24
  25 echo "*nat" > $restoretmp
  26 echo ":PREROUTING ACCEPT [0:0]" >> $restoretmp
  27 echo ":POSTROUTING ACCEPT [0:0]" >> $restoretmp
  28 echo ":OUTPUT ACCEPT [0:0]" >> $restoretmp
  29
  30 # ===============================================================
  31 #  Symetrical SNAT-DNAT using indexed iptables
  32 # ===============================================================
  33
  34 echo -n "Generating new iptables-restore data - two way SNAT/DNAT "
  35
  36 for czfip in `$grep -v ^# $pimp_2way_nat|$cut -f 1 -d " "`
  37 do
  38  pubip=`$grep "$czfip " $pimp_2way_nat|$cut -f 2 -d " "`
  39  czffirstindex=priv_`ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  40  czfsecondindex=priv_`ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  41  czfthirdindex=priv_`ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  42  czffourthindex=priv_`ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  43  pubfirstindex=pub_`ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  44  pubsecondindex=pub_`ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
  45
  46  if ! $grep $czffirstindex $restoretmp > /dev/null
  47  then
  48   echo :$czffirstindex "- [0:0]" >> $restoretmp
  49   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoretmp
  50   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoretmp
  51   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoretmp
  52   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffirstindex >> $restoretmp
  53  fi
  54
  55  if ! $grep $czfsecondindex $restoretmp > /dev/null
  56  then
  57   echo :$czfsecondindex "- [0:0]" >> $restoretmp
  58   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoretmp
  59   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoretmp
  60   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoretmp
  61   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfsecondindex >> $restoretmp
  62  fi
  63
  64  if ! $grep $czfthirdindex $restoretmp > /dev/null
  65  then
  66   echo :$czfthirdindex "- [0:0]" >> $restoretmp
  67   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoretmp
  68   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoretmp
  69   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoretmp
  70   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfthirdindex >> $restoretmp
  71  fi
  72
  73  if ! $grep $czffourthindex $restoretmp > /dev/null
  74  then
  75   echo :$czffourthindex "- [0:0]" >> $restoretmp
  76   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffourthindex >> $restoretmp
  77   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffourthindex >> $restoretmp
  78   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffourthindex >> $restoretmp
  79   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffourthindex >> $restoretmp
  80  fi
  81
  82  if ! $grep $pubfirstindex $restoretmp > /dev/null
  83  then
  84   echo :$pubfirstindex "- [0:0]" >> $restoretmp
  85   echo -A PREROUTING -i $wan1 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
  86   echo -A PREROUTING -i $wan2 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
  87   echo -A PREROUTING -i $wan3 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
  88   echo -A PREROUTING -i $wan4 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
  89  fi
  90
  91  if ! $grep $pubsecondindex $restoretmp > /dev/null
  92  then
  93   echo :$pubsecondindex "- [0:0]" >> $restoretmp
  94   echo -A $pubfirstindex -i $wan1 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
  95   echo -A $pubfirstindex -i $wan2 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
  96   echo -A $pubfirstindex -i $wan3 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
  97   echo -A $pubfirstindex -i $wan4 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
  98  fi
  99
 100  echo -A $pubsecondindex -i $wan1 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoretmp
 101  echo -A $pubsecondindex -i $wan2 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoretmp
 102  echo -A $pubsecondindex -i $wan3 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoretmp
 103  echo -A $pubsecondindex -i $wan4 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoretmp
 104
 105  echo -A $czffourthindex -s $czfip/32 -o $wan1 -j SNAT --to-source $pubip >> $restoretmp
 106  echo -A $czffourthindex -s $czfip/32 -o $wan2 -j SNAT --to-source $pubip >> $restoretmp
 107  echo -A $czffourthindex -s $czfip/32 -o $wan3 -j SNAT --to-source $pubip >> $restoretmp
 108  echo -A $czffourthindex -s $czfip/32 -o $wan4 -j SNAT --to-source $pubip >> $restoretmp
 109
 110  echo -n .
 111 done
 112 echo " done."
 113
 114 echo -n "Generating new iptables-restore data - one way SNAT "
 115
 116 # ===============================================================
 117 #  SNAT only using indexed iptables (should be rather function, hmm)
 118 # ===============================================================
 119
 120 for czfip in `$grep -v ^# $pimp_snat|$cut -f 1 -d " "`
 121 do
 122  pubip=`$grep "$czfip " $pimp_snat|$cut -f 2 -d " "`
 123  czffirstindex=priv_`ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
 124  czfsecondindex=priv_`ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
 125  czfthirdindex=priv_`ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
 126  czffourthindex=priv_`ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
 127
 128  if ! $grep $czffirstindex $restoretmp > /dev/null
 129  then
 130   echo :$czffirstindex "- [0:0]" >> $restoretmp
 131   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoretmp
 132   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoretmp
 133   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoretmp
 134   echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffirstindex >> $restoretmp
 135  fi
 136
 137  if ! $grep $czfsecondindex $restoretmp > /dev/null
 138  then
 139   echo :$czfsecondindex "- [0:0]" >> $restoretmp
 140   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoretmp
 141   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoretmp
 142   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoretmp
 143   echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfsecondindex >> $restoretmp
 144  fi
 145
 146  if ! $grep $czfthirdindex $restoretmp > /dev/null
 147  then
 148   echo :$czfthirdindex "- [0:0]" >> $restoretmp
 149   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoretmp
 150   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoretmp
 151   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoretmp
 152   echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfthirdindex >> $restoretmp
 153  fi
 154
 155  if ! $grep $czffourthindex $restoretmp > /dev/null
 156  then
 157   echo :$czffourthindex "- [0:0]" >> $restoretmp
 158   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffourthindex >> $restoretmp
 159   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffourthindex >> $restoretmp
 160   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffourthindex >> $restoretmp
 161   echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffourthindex >> $restoretmp
 162  fi
 163
 164  echo -A $czffourthindex -s $czfip/32 -o $wan1 -j SNAT --to-source $pubip >> $restoretmp
 165  echo -A $czffourthindex -s $czfip/32 -o $wan2 -j SNAT --to-source $pubip >> $restoretmp
 166  echo -A $czffourthindex -s $czfip/32 -o $wan3 -j SNAT --to-source $pubip >> $restoretmp
 167  echo -A $czffourthindex -s $czfip/32 -o $wan4 -j SNAT --to-source $pubip >> $restoretmp
 168
 169  echo -n .
 170 done
 171 echo " done."
 172
 173 echo COMMIT >> $restoretmp
 174 mv $restoretmp $restoredata