mirror of
https://github.com/reynir/banawa-chat.git
synced 2024-11-21 20:37:54 +00:00
81 lines
2.6 KiB
OCaml
81 lines
2.6 KiB
OCaml
open Lwt.Syntax
|
|
|
|
type state =
|
|
{ env : (string, string) Hashtbl.t
|
|
; sigwinch : (int * int) Lwt_condition.t
|
|
; mutable size : int * int
|
|
}
|
|
|
|
module Main (_ : Mirage_random.S) (T : Mirage_time.S) (M : Mirage_clock.MCLOCK) (Stack : Tcpip.Stack.V4V6) = struct
|
|
module Ssh = Banawa_mirage.Make(Stack.TCP)(T)(M)
|
|
module Nottui' = Nottui_mirage.Make(T)
|
|
|
|
let buffer = Rb.make 1024
|
|
let buffer_var = Lwd.var buffer
|
|
|
|
let callback flow stop t ~username r =
|
|
match r with
|
|
| Ssh.Pty_req { width; height; _ } ->
|
|
t.size <- (Int32.to_int width, Int32.to_int height);
|
|
Lwt.return_unit
|
|
| Ssh.Pty_set { width; height; _ } ->
|
|
Lwt_condition.broadcast t.sigwinch
|
|
(Int32.to_int width, Int32.to_int height);
|
|
Lwt.return_unit
|
|
| Ssh.Set_env _ -> Lwt.return_unit
|
|
| Ssh.Channel { cmd; ic=_; oc=_; ec } ->
|
|
let* () =
|
|
ec (Printf.ksprintf Cstruct.of_string
|
|
"Thanks for logging in! Currently, %S is unsupported\r\n\
|
|
Check back later." cmd)
|
|
in
|
|
let* () = Lwt_switch.turn_off stop in
|
|
Stack.TCP.close flow
|
|
| Ssh.Shell { ic; oc; ec=_ } ->
|
|
let ic () =
|
|
let+ r = ic () in
|
|
match r with
|
|
| `Data cs -> `Data (Cstruct.map (function '\r' -> '\n' | c -> c) cs)
|
|
| `Eof -> `Eof
|
|
in
|
|
let cursor = Lwd.var (0, 0) in
|
|
let message m =
|
|
let msg = Message.make ~nickname:username m in
|
|
Lwd.set buffer_var (Rb.push buffer msg; buffer);
|
|
in
|
|
Rb.push buffer (Message.msgf "Welcome, %s!" username);
|
|
let ui =
|
|
let ( let* ) x f = Lwd.bind x ~f in
|
|
let* prompt = Prompt.make ~message cursor in
|
|
let* window = Window.make buffer_var in
|
|
Lwd.return (Nottui.Ui.vcat [window; prompt])
|
|
in
|
|
Lwt.join [
|
|
Nottui'.run ~cursor (t.size, t.sigwinch) ui ic oc;
|
|
]
|
|
|
|
let start _random _time _mtime stack =
|
|
let port = Key_gen.port () in
|
|
let user_db = Banawa.Auth.Db.create 20 in
|
|
let hostkey = Key_gen.hostkey () in
|
|
let hostkey =
|
|
match Banawa.Keys.of_string hostkey with
|
|
| Ok k -> k
|
|
| Error `Msg e ->
|
|
Logs.err (fun m -> m "%s" e); exit 1
|
|
in
|
|
let server, msgs = Banawa.Server.make hostkey user_db in
|
|
Stack.TCP.listen (Stack.tcp stack) ~port
|
|
(fun flow ->
|
|
let stop = Lwt_switch.create () in
|
|
let state =
|
|
{ env = Hashtbl.create 0x10
|
|
; sigwinch = Lwt_condition.create ()
|
|
; size = (0, 0)
|
|
}
|
|
in
|
|
let _ssh = Ssh.spawn_server ~stop server msgs flow (callback flow stop state) in
|
|
Lwt.return_unit);
|
|
fst (Lwt.wait ())
|
|
end
|