121 lines
4.6 KiB
OCaml
121 lines
4.6 KiB
OCaml
(* Copyright (C) 2015, Thomas Leonard <thomas.leonard@unikernel.com>
|
|
See the README file for details. *)
|
|
|
|
open Lwt
|
|
open Qubes
|
|
open Cmdliner
|
|
|
|
let src = Logs.Src.create "unikernel" ~doc:"Main unikernel code"
|
|
module Log = (val Logs.src_log src : Logs.LOG)
|
|
|
|
let nat_table_size =
|
|
let doc = Arg.info ~doc:"The number of NAT entries to allocate." [ "nat-table-size" ] in
|
|
Arg.(value & opt int 5_000 doc)
|
|
|
|
let ipv4 =
|
|
let doc = Arg.info ~doc:"Manual IP setting." [ "ipv4" ] in
|
|
Arg.(value & opt string "0.0.0.0" doc)
|
|
|
|
let ipv4_gw =
|
|
let doc = Arg.info ~doc:"Manual Gateway IP setting." [ "ipv4-gw" ] in
|
|
Arg.(value & opt string "0.0.0.0" doc)
|
|
|
|
let ipv4_dns =
|
|
let doc = Arg.info ~doc:"Manual DNS IP setting." [ "ipv4-dns" ] in
|
|
Arg.(value & opt string "10.139.1.1" doc)
|
|
|
|
let ipv4_dns2 =
|
|
let doc = Arg.info ~doc:"Manual Second DNS IP setting." [ "ipv4-dns2" ] in
|
|
Arg.(value & opt string "10.139.1.2" doc)
|
|
|
|
module Main (R : Mirage_random.S)(Clock : Mirage_clock.MCLOCK)(Time : Mirage_time.S) = struct
|
|
module Dispatcher = Dispatcher.Make(R)(Clock)(Time)
|
|
module Dns_transport = My_dns.Transport(R)(Clock)(Time)
|
|
module Dns_client = Dns_client.Make(Dns_transport)
|
|
|
|
(* Set up networking and listen for incoming packets. *)
|
|
let network dns_client dns_responses dns_servers qubesDB router =
|
|
(* Report success *)
|
|
Dao.set_iptables_error qubesDB "" >>= fun () ->
|
|
(* Handle packets from both networks *)
|
|
Lwt.choose [
|
|
Dispatcher.wait_clients Clock.elapsed_ns dns_client dns_servers qubesDB router ;
|
|
Dispatcher.uplink_wait_update qubesDB router ;
|
|
Dispatcher.uplink_listen Clock.elapsed_ns dns_responses router
|
|
]
|
|
|
|
(* Main unikernel entry point (called from auto-generated main.ml). *)
|
|
let start _random _clock _time nat_table_size ipv4 ipv4_gw ipv4_dns ipv4_dns2 =
|
|
let start_time = Clock.elapsed_ns () in
|
|
(* Start qrexec agent and QubesDB agent in parallel *)
|
|
let qrexec = RExec.connect ~domid:0 () in
|
|
let qubesDB = DB.connect ~domid:0 () in
|
|
|
|
(* Wait for clients to connect *)
|
|
qrexec >>= fun qrexec ->
|
|
let agent_listener = RExec.listen qrexec Command.handler in
|
|
qubesDB >>= fun qubesDB ->
|
|
let startup_time =
|
|
let (-) = Int64.sub in
|
|
let time_in_ns = Clock.elapsed_ns () - start_time in
|
|
Int64.to_float time_in_ns /. 1e9
|
|
in
|
|
Log.info (fun f -> f "QubesDB and qrexec agents connected in %.3f s" startup_time);
|
|
(* Watch for shutdown requests from Qubes *)
|
|
let shutdown_rq =
|
|
Xen_os.Lifecycle.await_shutdown_request () >>= fun (`Poweroff | `Reboot) ->
|
|
Lwt.return_unit in
|
|
(* Set up networking *)
|
|
let nat = My_nat.create ~max_entries:nat_table_size in
|
|
|
|
let netvm_ip = Ipaddr.V4.of_string_exn ipv4_gw in
|
|
let our_ip = Ipaddr.V4.of_string_exn ipv4 in
|
|
let dns = Ipaddr.V4.of_string_exn ipv4_dns in
|
|
let dns2 = Ipaddr.V4.of_string_exn ipv4_dns2 in
|
|
|
|
let zero_ip = (Ipaddr.V4.make 0 0 0 0) in
|
|
|
|
let network_config =
|
|
if (netvm_ip = zero_ip && our_ip = zero_ip) then (* Read network configuration from QubesDB *)
|
|
Dao.read_network_config qubesDB >>= fun config ->
|
|
if config.netvm_ip = zero_ip || config.our_ip = zero_ip then
|
|
Log.info (fun f -> f "We currently have no netvm nor command line for setting it up, aborting...");
|
|
assert (config.netvm_ip <> zero_ip && config.our_ip <> zero_ip);
|
|
Lwt.return config
|
|
else begin
|
|
let config:Dao.network_config = {from_cmdline=true; netvm_ip; our_ip; dns; dns2} in
|
|
Lwt.return config
|
|
end
|
|
in
|
|
network_config >>= fun config ->
|
|
|
|
(* We now must have a valid netvm IP address and our IP address or crash *)
|
|
Dao.print_network_config config ;
|
|
|
|
(* Set up client-side networking *)
|
|
Client_eth.create config >>= fun clients ->
|
|
|
|
(* Set up routing between networks and hosts *)
|
|
let router = Dispatcher.create
|
|
~config
|
|
~clients
|
|
~nat
|
|
~uplink:None
|
|
in
|
|
|
|
let send_dns_query = Dispatcher.send_dns_client_query router in
|
|
let dns_mvar = Lwt_mvar.create_empty () in
|
|
let nameservers = `Udp, [ config.Dao.dns, 53 ; config.Dao.dns2, 53 ] in
|
|
let dns_client = Dns_client.create ~nameservers (router, send_dns_query, dns_mvar) in
|
|
|
|
let dns_servers = [ config.Dao.dns ; config.Dao.dns2 ] in
|
|
let net_listener = network (Dns_client.getaddrinfo dns_client Dns.Rr_map.A) dns_mvar dns_servers qubesDB router in
|
|
|
|
(* Report memory usage to XenStore *)
|
|
Memory_pressure.init ();
|
|
(* Run until something fails or we get a shutdown request. *)
|
|
Lwt.choose [agent_listener; net_listener; shutdown_rq] >>= fun () ->
|
|
(* Give the console daemon time to show any final log messages. *)
|
|
Time.sleep_ns (1.0 *. 1e9 |> Int64.of_float)
|
|
end
|