parse and set +k/+l flags

lib/irc/mode.ml

@@ -122,8 +122,6 @@ module Parse = struct
   let fail fmt =
     Format.kasprintf (fun _ -> raise Error) fmt
 
-  type user_modes = Set.change
-
   let parse_mode_set str ~of_char ~add ~rem ~init =
     let rec loop dir acc i =
       if i >= String.length str then acc
@@ -142,6 +140,17 @@ module Parse = struct
     in
     loop `none init 0
 
+  let take = function
+    | [] -> fail "expected argument"
+    | x :: xs -> x, xs
+
+  let take_int = function
+    | [] -> fail "expected argument"
+    | x :: xs -> try int_of_string x, xs
+      with Invalid_argument _ -> fail "invalid integer"
+
+  type user_modes = Set.change
+
   let user_modes str =
     parse_mode_set str
       ~of_char:of_char_user
@@ -157,13 +166,20 @@ module Parse = struct
     chan_modes : Set.change;
     chan_key : (string, string) set_or_unset option;
     chan_limit : (int, unit) set_or_unset option;
-    chan_priv : (chan_b * (string, string) set_or_unset) list;
   }
 
   let chan_modes_add (args, modes) = function
-    | #chan_a -> fail "TODO: + type A modes"
-    | #chan_b -> fail "TODO: + type B modes"
-    | #chan_c -> fail "TODO: + type C modes"
+    | `k ->
+      (* type B *)
+      let key, args = take args in
+      let chan_key = Some (Set key) in
+      args, { modes with chan_key }
+    | `l ->
+      (* type C *)
+      let lim, args = take_int args in
+      let chan_limit = Some (Set lim) in
+      args, { modes with chan_limit }
+    | `b | `o | `v -> fail "TODO: + ban/op/voice"
     | #chan_d as m ->
       let chan_modes = {
         Set.add = Set.add m modes.chan_modes.add;
@@ -172,9 +188,16 @@ module Parse = struct
       args, { modes with chan_modes }
 
   let chan_modes_rem (args, modes) = function
-    | #chan_a -> fail "TODO: - type A modes"
-    | #chan_b -> fail "TODO: - type B modes"
-    | #chan_c -> fail "TODO: - type C modes"
+    | `k ->
+      (* type B *)
+      let key, args = take args in
+      let chan_key = Some (Unset key) in
+      args, { modes with chan_key }
+    | `l ->
+      (* type C *)
+      let chan_limit = Some (Unset ()) in
+      args, { modes with chan_limit }
+    | `b | `o | `v -> fail "TODO: - ban/op/voice"
     | #chan_d as m ->
       let chan_modes = {
         Set.add = Set.remove m modes.chan_modes.add;
@@ -187,7 +210,6 @@ module Parse = struct
       chan_modes = Set.no_change;
       chan_key = None;
       chan_limit = None;
-      chan_priv = [];
     } in
     let _, modes =
       parse_mode_set str
@@ -196,7 +218,7 @@ module Parse = struct
         ~add:chan_modes_add
         ~rem:chan_modes_rem
     in
-    { modes with chan_priv = List.rev modes.chan_priv }
+    modes
 end
 
 

lib/irc/mode.mli

@@ -81,7 +81,7 @@ module Parse : sig
     chan_modes : Set.change;
     chan_key : (string, string) set_or_unset option;
     chan_limit : (int, unit) set_or_unset option;
-    chan_priv : (chan_b * (string, string) set_or_unset) list;
+    (* TODO: bad, op, voice *)
   }
 
   val user_modes : string -> user_modes

lib/server/connection.ml

@@ -74,7 +74,7 @@ let notonchannel chan     = "442", [chan; "You're not on that channel"]
 let notregistered         = "451", ["You have not registered"]
 let needmoreparams cmd    = "461", [cmd; "Not enough parameters"]
 let alreadyregistered     = "462", ["Unauthorized command (already registered)"]
-let modeunknownflag       = "501", ["Unknown MODE flag"]
+let modeunknownflag       = "501", ["Didn't understand MODE command"]
 let usersdontmatch_set    = "502", ["Can't change mode for other users"]
 let usersdontmatch_get    = "502", ["Can't view mode for other users"]
 
@@ -270,6 +270,37 @@ let set_chan_mode chan ~from chg =
       Chan.set_mode chan mode;
     end
 
+let set_chan_key chan ~from = function
+  | Irc.Mode.Parse.Set key ->
+    let msg = Irc.Msg.make "MODE" [Chan.name chan; "+k"; key] ~always_trailing:true in
+    begin
+      Router.relay msg ~from [`to_chan chan; `to_self];
+      Chan.set_key chan (Some key);
+    end
+  | Irc.Mode.Parse.Unset _key ->
+    if Chan.key chan <> None then
+      let msg = Irc.Msg.make "MODE" [Chan.name chan; "-k"; "*"] in
+      begin
+        Router.relay msg ~from [`to_chan chan; `to_self];
+        Chan.set_key chan None;
+      end
+
+let set_chan_limit chan ~from = function
+  | Irc.Mode.Parse.Set lim ->
+    if Chan.limit chan <> Some lim then
+      let msg = Irc.Msg.make "MODE" [Chan.name chan; "+l"; string_of_int lim] in
+      begin
+        Router.relay msg ~from [`to_chan chan; `to_self];
+        Chan.set_limit chan (Some lim);
+      end
+  | Irc.Mode.Parse.Unset () ->
+    if Chan.limit chan <> None then
+      let msg = Irc.Msg.make "MODE" [Chan.name chan; "-l"] in
+      begin
+        Router.relay msg ~from [`to_chan chan; `to_self];
+        Chan.set_limit chan None;
+      end
+
 let on_get_user_mode user me =
   let* () = if user != me then Error usersdontmatch_get else Ok () in
   Ok [
@@ -289,12 +320,23 @@ let on_set_user_mode user me modestr _args =
   Ok []
 
 let on_get_chan_mode chan _me =
-  Ok [
-    "324", [Chan.name chan; Fmt.str "+%a" Irc.Mode.Set.pp (Chan.mode chan)];
-    (* TODO: +k *)
-    (* TODO: +l *)
+  let rpls =[
+    ["324", [Chan.name chan; Fmt.str "+%a" Irc.Mode.Set.pp (Chan.mode chan)]];
+
+    begin match Chan.limit chan with
+      | Some lim -> ["324", [Chan.name chan; "+l"; string_of_int lim]]
+      | None -> []
+    end;
+
+    (* TODO: only display key if priveledged enough to see it *)
+    begin match Chan.key chan with
+      | Some key -> ["324", [Chan.name chan; "+k"; key]]
+      | None -> []
+    end;
+
     (* TODO: RPL_CREATIONTIME (329) *)
-  ]
+  ] in
+  Ok (List.flatten rpls)
 
 let on_set_chan_mode chan me modestr args =
   (* TODO: If <modestring> is given, the user sending the command MUST have appropriate
@@ -311,10 +353,11 @@ let on_set_chan_mode chan me modestr args =
       Error modeunknownflag
   in
 
-  set_chan_mode chan chg.chan_modes ~from:me;
-  (* TODO: chg.chan_key *)
-  (* TODO: chg.chan_limit *)
-  (* TODO: chg.chan_priv *)
+  set_chan_mode chan ~from:me chg.chan_modes;
+  Option.iter (set_chan_key chan ~from:me) chg.chan_key;
+  Option.iter (set_chan_limit chan ~from:me) chg.chan_limit;
+
+  (* TODO: chg.chan_ban/op/voice *)
 
   Ok []
 

lib/server/router.ml

@@ -20,9 +20,9 @@ and chan = {
   mutable topic : string option;
   mutable members : membership Dllist.t;
   mutable chan_mode : Irc.Mode.Set.t; (* +imstn *)
+  mutable chan_limit : int option; (* +l *)
+  mutable chan_key : string option; (* +k *)
   (* TODO: +b, +o, +v *)
-  (* TODO: +k *)
-  (* TODO: +l *)
   (* TODO: creation time *)
 }
 
@@ -135,6 +135,8 @@ module Chan = struct
       topic = None;
       members = Dllist.create ();
       chan_mode = Irc.Mode.Set.empty;
+      chan_limit = None;
+      chan_key = None;
     }
 
   let name t = t.name
@@ -143,6 +145,10 @@ module Chan = struct
   let no_members t = Dllist.is_empty t.members
   let mode t = t.chan_mode
   let set_mode t new_mode = t.chan_mode <- new_mode
+  let limit t = t.chan_limit
+  let set_limit t n = t.chan_limit <- n
+  let key t = t.chan_key
+  let set_key t k = t.chan_key <- k
 
   let register t ~router =
     Hashtbl.replace router.channels t.name_key t