package/network/config/netifd/files/lib/netifd/proto/dhcp.sh

   1 #!/bin/sh
   2
   3 . /lib/functions.sh
   4 . ../netifd-proto.sh
   5 init_proto "$@"
   6
   7 proto_dhcp_init_config() {
   8         renew_handler=1
   9
  10         proto_config_add_string 'ipaddr:ipaddr'
  11         proto_config_add_string 'hostname:hostname'
  12         proto_config_add_string clientid
  13         proto_config_add_string vendorid
  14         proto_config_add_boolean 'broadcast:bool'
  15         proto_config_add_boolean 'release:bool'
  16         proto_config_add_string 'reqopts:list(string)'
  17         proto_config_add_boolean 'defaultreqopts:bool'
  18         proto_config_add_string iface6rd
  19         proto_config_add_array 'sendopts:list(string)'
  20         proto_config_add_boolean delegate
  21         proto_config_add_string zone6rd
  22         proto_config_add_string zone
  23         proto_config_add_string mtu6rd
  24         proto_config_add_string customroutes
  25         proto_config_add_boolean classlessroute
  26 }
  27
  28 proto_dhcp_add_sendopts() {
  29         [ -n "$1" ] && append "$3" "-x $1"
  30 }
  31
  32 proto_dhcp_setup() {
  33         local config="$1"
  34         local iface="$2"
  35
  36         local ipaddr hostname clientid vendorid broadcast release reqopts defaultreqopts iface6rd sendopts delegate zone6rd zone mtu6rd customroutes classlessroute
  37         json_get_vars ipaddr hostname clientid vendorid broadcast release reqopts defaultreqopts iface6rd delegate zone6rd zone mtu6rd customroutes classlessroute
  38
  39         local opt dhcpopts
  40         for opt in $reqopts; do
  41                 append dhcpopts "-O $opt"
  42         done
  43
  44         json_for_each_item proto_dhcp_add_sendopts sendopts dhcpopts
  45
  46         [ -z "$hostname" ] && hostname="$(cat /proc/sys/kernel/hostname)"
  47         [ "$defaultreqopts" = 0 ] && defaultreqopts="-o" || defaultreqopts=
  48         [ "$broadcast" = 1 ] && broadcast="-B" || broadcast=
  49         [ "$release" = 1 ] && release="-R" || release=
  50         [ -n "$clientid" ] && clientid="-x 0x3d:${clientid//:/}" || clientid="-C"
  51         [ -n "$iface6rd" ] && proto_export "IFACE6RD=$iface6rd"
  52         [ "$iface6rd" != 0 -a -f /lib/netifd/proto/6rd.sh ] && append dhcpopts "-O 212"
  53         [ -n "$zone6rd" ] && proto_export "ZONE6RD=$zone6rd"
  54         [ -n "$zone" ] && proto_export "ZONE=$zone"
  55         [ -n "$mtu6rd" ] && proto_export "MTU6RD=$mtu6rd"
  56         [ -n "$customroutes" ] && proto_export "CUSTOMROUTES=$customroutes"
  57         [ "$delegate" = "0" ] && proto_export "IFACE6RD_DELEGATE=0"
  58         # Request classless route option (see RFC 3442) by default
  59         [ "$classlessroute" = "0" ] || append dhcpopts "-O 121"
  60
  61         proto_export "INTERFACE=$config"
  62         proto_run_command "$config" udhcpc \
  63                 -p /var/run/udhcpc-$iface.pid \
  64                 -s /lib/netifd/dhcp.script \
  65                 -f -t 0 -i "$iface" \
  66                 ${ipaddr:+-r $ipaddr} \
  67                 ${hostname:+-x "hostname:$hostname"} \
  68                 ${vendorid:+-V "$vendorid"} \
  69                 $clientid $defaultreqopts $broadcast $release $dhcpopts
  70 }
  71
  72 proto_dhcp_renew() {
  73         local interface="$1"
  74         # SIGUSR1 forces udhcpc to renew its lease
  75         local sigusr1="$(kill -l SIGUSR1)"
  76         [ -n "$sigusr1" ] && proto_kill_command "$interface" $sigusr1
  77 }
  78
  79 proto_dhcp_teardown() {
  80         local interface="$1"
  81         proto_kill_command "$interface"
  82 }
  83
  84 add_protocol dhcp