Git-Mirrors/qubes-mirage-firewall
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Merge pull request #201 from hannesm/mirage-48

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update to mirage 4.8
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Pierre Alain 2024-10-15 18:09:35 +02:00 committed by GitHub
commit 8f739c610e
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7 changed files with 31 additions and 36 deletions
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2
Dockerfile
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@ -23,7 +23,7 @@ ENV OPAMCONFIRMLEVEL=unsafe-yes
# Remove this line (and the base image pin above) if you want to test with the
# latest versions.
# taken from https://github.com/ocaml/opam-repository
RUN opam init --disable-sandboxing -a --bare https://github.com/ocaml/opam-repository.git#13acffc3de9c22953d1e08bad3e56ee6e965eeed
RUN opam init --disable-sandboxing -a --bare https://github.com/ocaml/opam-repository.git#26c09ff1da6a07b20a0f9474e3a6ed6315c6388b
RUN opam switch create myswitch 4.14.2
RUN opam exec -- opam install -y mirage opam-monorepo ocaml-solo5
RUN mkdir /tmp/orb-build

2
build-with.sh
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@ -20,5 +20,5 @@ $builder build -t qubes-mirage-firewall .
echo Building Firewall...
$builder run --rm -i -v `pwd`:/tmp/orb-build:Z qubes-mirage-firewall
echo "SHA2 of build: $(sha256sum ./dist/qubes-firewall.xen)"
echo "SHA2 last known: 5805e94755334af02fd4244b0b163c7a90fef9061d826e365db3be8adfe8abcc"
echo "SHA2 last known: 4b1f743bf4540bc8a9366cf8f23a78316e4f2d477af77962e50618753c4adf10"
echo "(hashes should match for released versions)"

9
config.ml
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@ -1,4 +1,4 @@
(* mirage >= 4.5.0 & < 5.0.0 *)
(* mirage >= 4.8.0 & < 4.9.0 *)
(* Copyright (C) 2017, Thomas Leonard <thomas.leonard@unikernel.com>
See the README file for details. *)
@ -6,15 +6,8 @@
open Mirage
let nat_table_size = runtime_arg ~pos:__POS__ "Unikernel.nat_table_size"
let ipv4 = runtime_arg ~pos:__POS__ "Unikernel.ipv4"
let ipv4_gw = runtime_arg ~pos:__POS__ "Unikernel.ipv4_gw"
let ipv4_dns = runtime_arg ~pos:__POS__ "Unikernel.ipv4_dns"
let ipv4_dns2 = runtime_arg ~pos:__POS__ "Unikernel.ipv4_dns2"
let main =
main
~runtime_args:[ nat_table_size; ipv4; ipv4_gw; ipv4_dns; ipv4_dns2; ]
~packages:[
package "vchan" ~min:"4.0.2";
package "cstruct";

6
dispatcher.ml
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@ -9,7 +9,7 @@ let src = Logs.Src.create "dispatcher" ~doc:"Networking dispatch"
module Log = (val Logs.src_log src : Logs.LOG)
module Make
(R : Mirage_random.S)
(R : Mirage_crypto_rng_mirage.S)
(Clock : Mirage_clock.MCLOCK)
(Time : Mirage_time.S) =
struct
@ -453,7 +453,7 @@ struct
| Some uplink -> (
Lwt.catch
(fun () ->
U.write ~src_port ~dst ~dst_port uplink.udp buf >|= function
U.write ~src_port ~dst ~dst_port uplink.udp (Cstruct.of_string buf) >|= function
| Error s ->
Log.err (fun f -> f "error sending udp packet: %a" U.pp_error s);
Error (`Msg "failure")
@ -506,7 +506,7 @@ struct
"found a DNS packet whose dst_port (%d) was in the list of \
dns_client ports"
header.dst_port);
Lwt_mvar.put dns_responses (header, packet)
Lwt_mvar.put dns_responses (header, Cstruct.to_string packet)
| _ -> ipv4_from_netvm router (`IPv4 (header, packet))
end
end)

16
my_dns.ml
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@ -1,10 +1,12 @@
open Lwt.Infix
module Transport (R : Mirage_random.S) (C : Mirage_clock.MCLOCK) (Time : Mirage_time.S) = struct
module Transport (R : Mirage_crypto_rng_mirage.S) (C : Mirage_clock.MCLOCK) (Time : Mirage_time.S) = struct
type +'a io = 'a Lwt.t
type io_addr = Ipaddr.V4.t * int
module Dispatcher = Dispatcher.Make(R)(C)(Time)
type stack = Dispatcher.t * (src_port:int -> dst:Ipaddr.V4.t -> dst_port:int -> Cstruct.t -> (unit, [ `Msg of string ]) result Lwt.t) * (Udp_packet.t * Cstruct.t) Lwt_mvar.t
type stack = Dispatcher.t *
(src_port:int -> dst:Ipaddr.V4.t -> dst_port:int -> string -> (unit, [ `Msg of string ]) result Lwt.t) *
(Udp_packet.t * string) Lwt_mvar.t
module IM = Map.Make(Int)
@ -13,7 +15,7 @@ module Transport (R : Mirage_random.S) (C : Mirage_clock.MCLOCK) (Time : Mirage_
nameserver : io_addr ;
stack : stack ;
timeout_ns : int64 ;
mutable requests : Cstruct.t Lwt_condition.t IM.t ;
mutable requests : string Lwt_condition.t IM.t ;
}
type context = t
@ -24,8 +26,8 @@ module Transport (R : Mirage_random.S) (C : Mirage_clock.MCLOCK) (Time : Mirage_
let rec read t =
let _, _, answer = t.stack in
Lwt_mvar.take answer >>= fun (_, data) ->
if Cstruct.length data > 2 then begin
match IM.find_opt (Cstruct.BE.get_uint16 data 0) t.requests with
if String.length data > 2 then begin
match IM.find_opt (String.get_uint16_be data 0) t.requests with
| Some cond -> Lwt_condition.broadcast cond data
| None -> ()
end;
@ -48,13 +50,13 @@ module Transport (R : Mirage_random.S) (C : Mirage_clock.MCLOCK) (Time : Mirage_
let connect (t : t) = Lwt.return (Ok (t.protocol, t))
let send_recv (ctx : context) buf : (Cstruct.t, [> `Msg of string ]) result Lwt.t =
let send_recv (ctx : context) buf : (string, [> `Msg of string ]) result Lwt.t =
let dst, dst_port = ctx.nameserver in
let router, send_udp, _ = ctx.stack in
let src_port, evict =
My_nat.free_udp_port router.nat ~src:router.config.our_ip ~dst ~dst_port:53
in
let id = Cstruct.BE.get_uint16 buf 0 in
let id = String.get_uint16_be buf 0 in
with_timeout ctx.timeout_ns
(let cond = Lwt_condition.create () in
ctx.requests <- IM.add id cond ctx.requests;

2
test/unikernel.ml
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@ -42,7 +42,7 @@ let netvm = "10.137.0.5"
(* default "nameserver"s, which netvm redirects to whatever its real nameservers are *)
let nameserver_1, nameserver_2 = "10.139.1.1", "10.139.1.2"
module Client (R: Mirage_random.S) (Time: Mirage_time.S) (Clock : Mirage_clock.MCLOCK) (NET: Mirage_net.S) (DB : Qubes.S.DB) = struct
module Client (R: Mirage_crypto_rng_mirage.S) (Time: Mirage_time.S) (Clock : Mirage_clock.MCLOCK) (NET: Mirage_net.S) (DB : Qubes.S.DB) = struct
module E = Ethernet.Make(NET)
module A = Arp.Make(E)(Time)
module I = Qubesdb_ipv4.Make(DB)(R)(Clock)(E)(A)

30
unikernel.ml
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@ -10,25 +10,25 @@ 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)
Mirage_runtime.register_arg 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)
Mirage_runtime.register_arg 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)
Mirage_runtime.register_arg 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)
Mirage_runtime.register_arg 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)
Mirage_runtime.register_arg 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 Main (R : Mirage_crypto_rng_mirage.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)
@ -45,7 +45,7 @@ module Main (R : Mirage_random.S)(Clock : Mirage_clock.MCLOCK)(Time : Mirage_tim
]
(* 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 _random _clock _time =
let start_time = Clock.elapsed_ns () in
(* Start qrexec agent and QubesDB agent in parallel *)
let qrexec = RExec.connect ~domid:0 () in
@ -66,15 +66,15 @@ module Main (R : Mirage_random.S)(Clock : Mirage_clock.MCLOCK)(Time : Mirage_tim
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 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.any 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 ->