contrib/package/meshwizard/files/usr/bin/meshwizard/helpers/setup_firewall_interface.sh

   1 #!/bin/sh
   2 # This will add $net to the zone firewall (and remove it from other zones where it is referenced)
   3 # It will also setup rules defined in /etc/config/freifunk and /etc/config/profile_<community>
   4 # Arg $1 = $net
   5
   6 net=$1
   7 . /lib/functions.sh
   8 . $dir/functions.sh
   9 config_load firewall
  10
  11 # Get some variables
  12 type="$(uci -q get wireless.$net.type)"
  13 vap="$(uci -q get meshwizard.netconfig.$net\_vap)"
  14 wan_is_olsr=$(uci -q get meshwizard.netconfig.wan_config)
  15
  16 # Delete old firewall zone for freifunk
  17 handle_fwzone() {
  18         config_get name "$1" name
  19         config_get network "$1" network
  20
  21         if [ "$2" == "zoneconf" ]; then
  22                 if [ "$name" == "freifunk" ]; then
  23                         # rename section if unnamed
  24                         if [ -z "${1/cfg[0-9a-fA-F]*/}" ]; then
  25                                 section_rename firewall $1 zone_freifunk
  26                         fi
  27                 else
  28                         if [ ! "$name" == "freifunk" ] && [ -n "$netrenamed" -a -n "$(echo $network | grep $netrenamed)" ]; then
  29                                 echo "    Removed $netrenamed from firewall zone $name."
  30                                 network_new=$(echo $network | sed -e 's/'$netrenamed'//' -e 's/^ //' -e 's/  / /' -e 's/ $//')
  31                                 uci set firewall.$1.network="$network_new"
  32                         fi
  33                 fi
  34         fi
  35 }
  36
  37 config_foreach handle_fwzone zone zoneconf
  38
  39 # Add $netrenamed and if needed ${netrenamed}dhcp to the "freifunk" zone
  40 config_get network zone_freifunk network
  41
  42 # remove ${netrenamed}dhcp from networks list
  43 [ -n "$network" -a -n "$net" ] && network="${network/${netrenamed}dhcp/}"
  44 network=$(echo $network) # Removes leading and trailing whitespaces
  45
  46 [ -n "$netrenamed" ] && [ -z "$(echo $network | grep $netrenamed)" ] && network="$network $netrenamed"
  47
  48 if [ "$supports_vap" == "1" -a "$vap" == 1 ]; then
  49         [ -n "$netrenamed" ] && [ "$network" == "${network/${netrenamed}dhcp/}" ] && network="$network ${netrenamed}dhcp"
  50 fi
  51
  52 uci set firewall.zone_freifunk.network="$network"
  53
  54 uci_commitverbose "Add '$netrenamed' to freifunk firewall zone" firewall
  55
  56 currms=$(uci -q get firewall.zone_freifunk.masq_src)
  57
  58 # If interfaces are outside of the mesh network they should be natted
  59
  60 if [ "$vap" == 1 ]; then
  61         # Get dhcprange and meshnet for the dhcp interface
  62         if_ip="$(uci -q get network.${netrenamed}dhcp.ipaddr)"
  63         if_mask="$(uci -q get network.${netrenamed}dhcp.netmask)"
  64
  65         [ -n "$if_ip" -a "$if_mask" ] && export $(ipcalc.sh $if_ip $if_mask)
  66         [ -n "$NETWORK" -a "$PREFIX" ] && dhcprange="$NETWORK/$PREFIX"
  67
  68         if [ -n "$dhcprange" ]; then
  69                 meshnet="$(uci get profile_$community.profile.mesh_network)"
  70                 # check if the dhcprange is inside meshnet
  71                 dhcpinmesh="$($dir/helpers/check-range-in-range.sh $dhcprange $meshnet)"
  72                 if [ "$dhcpinmesh" == 1 ]; then
  73                         # needed or splash will not work
  74                         if [ "$has_luci_splash" == TRUE ]; then
  75                                 uci set firewall.zone_freifunk.contrack="1"
  76                         fi
  77                 else
  78                         uci set firewall.zone_freifunk.masq=1
  79                         [ -z "$(echo $currms |grep ${netrenamed}dhcp)" ] && uci add_list firewall.zone_freifunk.masq_src="${netrenamed}dhcp"
  80                 fi
  81         fi
  82 fi
  83
  84 # Get dhcprange and meshnet for the adhoc dhcp interface
  85 if_ip="$(uci -q get network.${netrenamed}ahdhcp.ipaddr)"
  86 if_mask="$(uci -q get network.${netrenamed}ahdhcp.netmask)"
  87
  88 [ -n "$if_ip" -a "$if_mask" ] && export $(ipcalc.sh $if_ip $if_mask)
  89 [ -n "$NETWORK" -a "$PREFIX" ] && dhcprangeah="$NETWORK/$PREFIX"
  90
  91 if [ -n "$dhcprangeah" ]; then
  92         meshnet="$(uci get profile_$community.profile.mesh_network)"
  93         # check if the dhcprange is inside meshnet
  94         dhcpinmesh="$($dir/helpers/check-range-in-range.sh $dhcprangeah $meshnet)"
  95         if [ "$dhcpinmesh" == 1 ]; then
  96                 # needed or splash will not work
  97                 if [ "$has_luci_splash" == TRUE ]; then
  98                         uci set firewall.zone_freifunk.contrack="1"
  99                 fi
 100         else
 101                 uci set firewall.zone_freifunk.masq=1
 102                 [ -z "$(echo $currms |grep ${netrenamed}ahdhcp)" ] && uci add_list firewall.zone_freifunk.masq_src="${netrenamed}ahdhcp"
 103         fi
 104 fi
 105
 106
 107 for i in IP NETMASK BROADCAST NETWORK PREFIX; do
 108         unset $i
 109 done
 110
 111 uci_commitverbose "Setup masquerading rules for '$netrenamed'" firewall