root/etc/functions.sh

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