package/pptp/files/pptp.sh

   1 find_gw() {
   2         route -n | awk '$1 == "0.0.0.0" { print $2; exit }'
   3 }
   4
   5 scan_pptp() {
   6         config_set "$1" device "pptp-$1"
   7 }
   8
   9 stop_interface_pptp() {
  10         stop_interface_ppp "$1"
  11 }
  12
  13 coldplug_interface_pptp() {
  14         setup_interface_pptp "pptp-$1" "$1"
  15 }
  16
  17 setup_interface_pptp() {
  18         local config="$2"
  19         local ifname
  20
  21         local device
  22         config_get device "$config" device
  23
  24         local ipproto
  25         config_get ipproto "$config" ipproto
  26
  27         local server
  28         config_get server "$config" server
  29
  30         local buffering
  31         config_get_bool buffering "$config" buffering 1
  32         [ "$buffering" == 0 ] && buffering="--nobuffer" || buffering=
  33
  34         for module in slhc ppp_generic ppp_async ip_gre; do
  35                 /sbin/insmod $module 2>&- >&-
  36         done
  37         sleep 1
  38
  39         setup_interface "$device" "$config" "${ipproto:-dhcp}"
  40         local gw="$(find_gw)"
  41         [ -n "$gw" ] && {
  42                 [ "$gw" != 0.0.0.0 ] && route delete "$server" 2>/dev/null >/dev/null
  43                 route add "$server" gw "$gw"
  44         }
  45
  46         # fix up the netmask
  47         config_get netmask "$config" netmask
  48         [ -z "$netmask" -o -z "$device" ] || ifconfig $device netmask $netmask
  49
  50         config_get mtu "$config" mtu
  51         mtu=${mtu:-1452}
  52         start_pppd "$config" \
  53                 pty "/usr/sbin/pptp $server --loglevel 0 --nolaunchpppd $buffering" \
  54                 file /etc/ppp/options.pptp \
  55                 mtu $mtu mru $mtu
  56 }