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 mac () {
  32   echo $2|awk -F ":" '{for(x=6,y='$1';x;x--){y+=int("0x"$x);$x=sprintf("%02x",y%256);y/=256}gsub(" ",":");print$0}'
  33 }
  34 wifi () (
  35   debug "### wifi $1 ###"
  36   if=$(awk 'gsub(":","") {print $1}' /proc/net/wireless)
  37   $DEBUG ifconfig $if hw ether $(mac 2 $(nvram get et0macaddr))
  38   $DEBUG wlconf $if $1
  39 )
  40
  41 ifup () (
  42   type=$1
  43   debug "### ifup $type ###"
  44
  45   if=$(nvram_get ${type}_ifname)
  46   if [ "${if%%[0-9]}" = "ppp" ]; then
  47     if=$(nvram_get pppoe_ifname)
  48   fi
  49
  50   if_valid $if || return
  51
  52   $DEBUG ifconfig $if down
  53   if [ "${if%%[0-9]}" = "br" ]; then
  54     stp=$(nvram_get ${type}_stp)
  55     $DEBUG brctl delbr $if
  56     $DEBUG brctl addbr $if
  57     $DEBUG brctl setfd $if 0
  58     $DEBUG brctl stp $if $stp
  59     if_list=$(nvram_get ${type}_ifnames)
  60     for sif in $if_list; do {
  61       if_valid $sif || continue
  62       $DEBUG ifconfig $sif 0.0.0.0 up
  63       $DEBUG brctl addif $if $sif
  64     } done
  65   fi
  66
  67   if_mac=$(nvram_get ${type}_hwaddr)
  68   [ -z "$if_mac" ] || $DEBUG ifconfig $if hw ether $if_mac
  69
  70   if_proto=$(nvram_get ${type}_proto)
  71   case "$if_proto" in
  72     static)
  73       if_ip=$(nvram_get ${type}_ipaddr)
  74       if_netmask=$(nvram_get ${type}_netmask)
  75       if_gateway=$(nvram_get ${type}_gateway)
  76
  77       ipcalc -s "$if_ip"      || return
  78       ipcalc -s "$if_netmask" || return
  79       $DEBUG ifconfig $if $if_ip netmask $if_netmask up
  80
  81       ipcalc -s "$if_gateway" || return
  82       $DEBUG route add default gw $if_gateway
  83
  84       [ -f /etc/resolv.conf ] && return
  85
  86       debug "# --- creating /etc/resolv.conf ---"
  87       for dns in $(nvram_get ${type}_dns); do {
  88         echo "nameserver $dns" >> /etc/resolv.conf
  89       } done
  90     ;;
  91     dhcp)
  92       pidfile=/tmp/dhcp-${type}.pid
  93       if [ -f $pidfile ]; then
  94         $DEBUG kill $(cat $pidfile)
  95       fi
  96       cmd="udhcpc -i $if -b -p $pidfile &"
  97       ${DEBUG:-eval} $cmd
  98     ;;
  99     pppoe)
 100       if_username=$(nvram_get ppp_username)
 101       if_password=$(nvram_get ppp_passwd)
 102       if_redial=$(nvram_get ppp_redialperiod)
 103       if_idletime=$(nvram_get ppp_idletime)
 104
 105       $DEBUG ifconfig $if 0.0.0.0 up
 106
 107       $DEBUG /sbin/pppoecd $if -u $if_username -p $if_password -i 0 -I $if_redial -T $if_idletime -k
 108     ;;
 109     *)
 110       echo "### WARNING $if: $if_proto is not supported"
 111     ;;
 112   esac
 113 )
 114
 115 ifdown () (
 116   type=$1
 117   debug "### ifdown $type ###"
 118   if=$(nvram_get ${type}_ifname)
 119   if_valid $if || return
 120   $DEBUG ifdown $if
 121 )