#!/bin/bash
#
# network - network plugin for postplug
#
# Copyright (c) 2004-2007 by Davide Madrisan <davide.madrisan@qilinux.it>
# Copyright (c) 2009-2013 by Silvan Calarco <silvan.calarco@mambasoft.it>
#

if [ $UID != 0 ]; then
   echo "$0: must be superuser." >&2
   exit 1
fi

me="network"

. /etc/postplug/postplug.defs

[ -r /etc/sysconfig/postplug ] && . /etc/sysconfig/postplug

[ -r /etc/sysconfig/rc ] && . /etc/sysconfig/rc
[ -r $rc_networkfunctions ] && . $rc_networkfunctions

resolv_conf=/etc/resolv.conf
sysconf_network=/etc/sysconfig/network

function wlan_config_auto() {

   local wlan_interface="$1"

   cat > $network_devices/ifcfg-${wlan_interface} << _EOF
DEVICE=${wlan_interface}
BOOTPROTO=dhcp
ONBOOT=yes
#NM_CONTROLLED=no
#WIRELESS_ESSID=""
#WIRELESS_MODE=managed
#WIRELESS_ENC=s:ENCRYPTIONKEY
#WIRELESS_NWID=
#WIRELESS_FREQ=
_EOF

}

function eth_config_auto() {

   local eth_interface="$1"

   cat > $network_devices/ifcfg-${eth_interface} << _EOF
DEVICE=${eth_interface}
BOOTPROTO=dhcp
ONBOOT=yes
#NM_CONTROLLED=no
_EOF

}

function cdc_usb() {
   local CDC_IPADDR=10.99.99.1
   local CDC_SUBNET=10.99.99.0
   local CDC_RANGE_FROM=10.99.99.100
   local CDC_RANGE_TO=10.99.99.199
   local CDC_NETMASK=255.255.255.0

   ifconfig usb0 &>/dev/null && {
      [ "$NETWORK_CDC_NETMASK" ] && CDC_NETMASK=$NETWORK_CDC_NETMASK
      [ -e $network_devices/ifcfg-usb0 ] || {
         [ "$NETWORK_CDC_IPADDR" ] && CDC_IPADDR=$NETWORK_CDC_IPADDR
         cat > $network_devices/ifcfg-usb0 << _EOF
DEVICE=usb0
BOOTPROTO=none
IPADDR=$CDC_IPADDR
NETMASK=$CDC_NETMASK
ONBOOT=yes
NM_CONTROLLED=no
_EOF
      }
      [ -e /etc/dhcpd-usb0.conf ] || {
         [ "$NETWORK_CDC_SUBNET" ] && CDC_SUBNET=$NETWORK_CDC_SUBNET
         [ "$NETWORK_CDC_RANGE_FROM" ] && CDC_RANGE_FROM=$NETWORK_CDC_RANGE_FROM
         [ "$NETWORK_CDC_RANGE_TO" ] && CDC_RANGE_TO=$NETWORK_CDC_RANGE_TO
         cat > /etc/dhcpd-usb0.conf << _EOF
# Created by postplug
subnet $NETWORK_CDC_SUBNET netmask $NETWORK_CDC_NETMASK {
   range dynamic-bootp $NETWORK_CDC_RANGE_FROM $NETWORK_CDC_RANGE_TO;
}
_EOF
      }
      ifup usb0
      touch /var/lib/dhcp/dhcpd-usb0.leases
      /sbin/dhcpd -q usb0 -pf /run/dhcpd-usb0.pid -cf /etc/dhcpd-usb0.conf -lf /var/lib/dhcp/dhcpd-usb0.leases
   }
}

function android_usb() {
   local ANDROID_IPADDR=10.99.99.1
   local ANDROID_ETHADDR=80:00:60:0F:E8:00
   local ANDROID_SUBNET=10.99.99.0
   local ANDROID_RANGE_FROM=10.99.99.100
   local ANDROID_RANGE_TO=10.99.99.199
   local ANDROID_NETMASK=255.255.255.0

   # FIXME: hardcoded values
   if [ -e /sys/class/android_usb/android0 ]; then
      [ "$NETWORK_ANDROID_ETHADDR" ] && ANDROID_ETHADDR=$NETWORK_ANDROID_ETHADDR
      [ "$NETWORK_ANDORID_NETMASK" ] && ANDORID_NETMASK=$NETWORK_ANDORID_NETMASK
      echo 0 > /sys/class/android_usb/android0/enable
      echo rndis,acm > /sys/class/android_usb/android0/functions
      echo 2 > /sys/class/android_usb/android0/f_acm/instances
      systemctl enable getty@ttyGS0
      systemctl enable getty@ttyGS1
      echo $ANDROID_ETHADDR > /sys/class/android_usb/android0/f_rndis/ethaddr
      echo 2d01 > /sys/class/android_usb/android0/idProduct
      echo 1 > /sys/class/android_usb/android0/enable

      [ -e $network_devices/ifcfg-rndis0 ] || {
         [ "$NETWORK_ANDROID_IPADDR" ] && ANDROID_IPADDR=$NETWORK_ANDROID_IPADDR
         cat > $network_devices/ifcfg-rndis0 << _EOF
DEVICE=rndis0
BOOTPROTO=none
IPADDR=$ANDROID_IPADDR
NETMASK=$ANDROID_NETMASK
ONBOOT=yes
NM_CONTROLLED=no
_EOF
      }
      [ -e /etc/dhcpd-rndis0.conf ] || {
         [ "$NETWORK_ANDROID_SUBNET" ] && ANDROID_SUBNET=$NETWORK_ANDROID_SUBNET
         [ "$NETWORK_ANDROID_RANGE_FROM" ] && ANDORID_RANGE_FROM=$NETWORK_ANDROID_RANGE_FROM
         [ "$NETWORK_ANDROID_RANGE_TO" ] && ANDROID_RANGE_TO=$NETWORK_ANDROID_RANGE_TO
         cat > /etc/dhcpd-rndis0.conf << _EOF
# Created by postplug
subnet $ANDROID_SUBNET netmask $ANDROID_NETMASK {
   range dynamic-bootp $ANDROID_RANGE_FROM $ANDROID_RANGE_TO;
}
_EOF
      }
      ifup rndis0
      touch /var/lib/dhcp/dhcpd-rndis0.leases
      /sbin/dhcpd -q rndis0 -pf /run/dhcpd-rndis0.pid -cf /etc/dhcpd-rndis0.conf -lf /var/lib/dhcp/dhcpd-rndis0.leases
   fi
}

[ "$NETWORK_CDC_DISABLE" = "1" ] || cdc_usb
[ "$NETWORK_ANDROID_DISABLE" = "1" ] || android_usb

# Disable p2p interface managed by NetworkManager
for net_int in $(cat /proc/net/dev | sed -n '/p2p[0-9]*:/{s,:.*,,;p}'); do
   # found interface already configured
   [ -e $network_devices/ifcfg-${net_int} ] && continue

   if [ "${net_int:0:3}" = "p2p" ]; then
      P2P_HWADDR=`ifconfig $net_int | grep HWaddr | sed "s|.* HWaddr ||"`
      cat > $network_devices/ifcfg-${net_int} << _EOF
DEVICE=$net_int
HWADDR=${P2P_HWADDR:0:17}
ONBOOT=no
NM_CONTROLLED=no
_EOF
   fi
done

# INFO: the following code is going obsolete
if [ "$NETWORK_NEWDEVICE" -a "$NETWORK_NEWDEVICE" != "off" ]; then

   wlan_ints=()
   for wlan_int in $(cat /proc/net/wireless 2>/dev/null | sed -n '/[a-z]*[0-9]*:/{s,:.*,,;p}'); do
      # found interface already configured
      [ -e $network_devices/ifcfg-$wlan_int ] && continue
      wlan_ints[${#wlan_ints[*]}]="$wlan_int"
   done

   eth_ints=()
   for eth_int in $(cat /proc/net/dev | sed -n '/eth[0-9]*:/{s,:.*,,;p}'); do
      # found interface already configured
      [ -e $network_devices/ifcfg-$eth_int ] && continue
      eth_ints[${#eth_ints[*]}]="$eth_int"
   done

   # how many interface have been configured?
   let "int_newconf = 0"

   if [ ${#eth_ints[*]} -gt 0 ]; then
      case "$NETWORK_NEWDEVICE" in
      "auto")
         for eth_int in ${eth_ints[*]}; do
            eth_config_auto $eth_int
            let "int_newconf += 1"
         done
         exit
      ;;
      "off"|"")
         exit
      ;;
      *) logmsg "$me" "error: "$"\
illegal value for NETWORK_NEWDEVICE ($NETWORK_NEWDEVICE)"
         exit 1
      ;;
      esac
   fi

   if [ ${#wlan_ints[*]} -gt 0 ]; then
      case "$NETWORK_NEWDEVICE" in
      "auto")
         for wlan_int in ${wlan_ints[*]}; do
            wlan_config_auto $wlan_int
            let "int_newconf += 1"
         done
         exit
      ;;
      esac
   fi
fi

exit 0