root/etc/functions.sh

   1 #!/bin/sh
   2
   3 . /etc/nvram.overrides
   4
   5 debug () {
   6  [ -z "$DEBUG" ] || echo $1
   7 }
   8
   9 # allow env to override nvram
  10 nvram_get () {
  11  eval "echo \${$1:-\$(nvram get $1)}"
  12 }
  13
  14 # valid interface?
  15 if_valid () (
  16   [ "${1%%[0-9]}" = "vlan" ] && {
  17     i=${1#vlan}
  18     hwname=$(nvram_get vlan${i}hwname)
  19     hwaddr=$(nvram_get ${hwname}macaddr)
  20     [ -z "$hwaddr" ] && return 1
  21
  22     vif=$(ifconfig -a | awk '{IGNORECASE=1} /^eth.*'$hwaddr'/ {print $1; exit}')
  23     debug "# vlan$i: $hwname $hwaddr => $vif"
  24
  25     $DEBUG ifconfig $vif up
  26     $DEBUG vconfig add $vif $i 2>/dev/null
  27   }
  28   ifconfig "$1" >/dev/null 2>&1 || [ "${1%%[0-9]}" = "br" ]
  29   return $?
  30 )
  31
  32 wifi () (
  33   debug "### wifi $1 ###"
  34   if=$(awk 'gsub(":","") {print $1}' /proc/net/wireless)
  35   $DEBUG wlconf $if $1
  36 )
  37
  38 ifup () (
  39   type=$1
  40   debug "### ifup $type ###"
  41
  42   if=$(nvram_get ${type}_ifname)
  43   if [ "${if%%[0-9]}" = "ppp" ]; then
  44     if=$(nvram_get pppoe_ifname)
  45   fi
  46
  47   if_valid $if || return
  48
  49   $DEBUG ifconfig $if down
  50   if [ "${if%%[0-9]}" = "br" ]; then
  51     stp=$(nvram_get ${type}_stp)
  52     $DEBUG brctl delbr $if
  53     $DEBUG brctl addbr $if
  54     $DEBUG brctl setfd $if 0
  55     $DEBUG brctl stp $if $stp
  56     if_list=$(nvram_get ${type}_ifnames)
  57     for sif in $if_list; do {
  58       if_valid $sif || continue
  59       $DEBUG ifconfig $sif 0.0.0.0 up
  60       $DEBUG brctl addif $if $sif
  61     } done
  62   fi
  63
  64   if_mac=$(nvram_get ${type}_hwaddr)
  65   [ -z "$if_mac" ] || $DEBUG ifconfig $if hw ether $if_mac
  66
  67   if_proto=$(nvram_get ${type}_proto)
  68   case "$if_proto" in
  69     static)
  70       if_ip=$(nvram_get ${type}_ipaddr)
  71       if_netmask=$(nvram_get ${type}_netmask)
  72       if_gateway=$(nvram_get ${type}_gateway)
  73
  74       ipcalc -s "$if_ip"      || return
  75       ipcalc -s "$if_netmask" || return
  76       $DEBUG ifconfig $if $if_ip netmask $if_netmask up
  77
  78       ipcalc -s "$if_gateway" || return
  79       $DEBUG route add default gw $if_gateway
  80
  81       [ -f /etc/resolv.conf ] && return
  82
  83       debug "# --- creating /etc/resolv.conf ---"
  84       for dns in $(nvram_get ${type}_dns); do {
  85         echo "nameserver $dns" >> /etc/resolv.conf
  86       } done
  87     ;;
  88     dhcp)
  89       pidfile=/tmp/dhcp-${type}.pid
  90       if [ -f $pidfile ]; then
  91         $DEBUG kill $(cat $pidfile)
  92       fi
  93       cmd="udhcpc -i $if -b -p $pidfile &"
  94       ${DEBUG:-eval} $cmd
  95     ;;
  96     pppoe)
  97       if_username=$(nvram_get ppp_username)
  98       if_password=$(nvram_get ppp_passwd)
  99       if_redial=$(nvram_get ppp_redialperiod)
 100       if_idletime=$(nvram_get ppp_idletime)
 101
 102       $DEBUG ifconfig $if 0.0.0.0 up
 103
 104       $DEBUG /sbin/pppoecd $if -u $if_username -p $if_password -i 0 -I $if_redial -T $if_idletime -k
 105     ;;
 106     *)
 107       echo "### WARNING $if: $if_proto is not supported"
 108     ;;
 109   esac
 110 )
 111
 112 ifdown () (
 113   type=$1
 114   debug "### ifdown $type ###"
 115   if=$(nvram_get ${type}_ifname)
 116   if_valid $if || return
 117   $DEBUG ifdown $if
 118 )