40 lines
905 B
Elixir
40 lines
905 B
Elixir
defmodule Pf do
|
|
use GenServer
|
|
|
|
defmodule State do
|
|
defstruct [
|
|
ifname: nil,
|
|
pcap_ref: nil,
|
|
tester_pid: nil
|
|
]
|
|
end
|
|
|
|
def start_link(ifname, pid) do
|
|
ifname = String.to_charlist(ifname)
|
|
GenServer.start_link(__MODULE__, [ifname, pid])
|
|
end
|
|
|
|
def init([ifname, pid]) do
|
|
{:ok, pid} = :epcap.start_link(interface: ifname, chroot: 'priv/tmp', inject: true)
|
|
%State{pcap_ref: pid, ifname: ifname, tester_pid: pid}
|
|
end
|
|
|
|
def handle_cast({:inject, packet}, state) do
|
|
:epcap.send(state.pcap_ref, packet)
|
|
{:noreply, state}
|
|
end
|
|
def handle_cast(:stop, state) do
|
|
{:stop, :normal, state}
|
|
end
|
|
def handle_cast(_req, state) do
|
|
{:noreply, state}
|
|
end
|
|
|
|
def handle_info({:packet, _dlt, _time, _len, data}, state) do
|
|
send(state.tester_pid, data)
|
|
{:noreply, state}
|
|
end
|
|
def handle_info(_info, state) do
|
|
{:noreply, state}
|
|
end
|
|
end
|