从房间配置 MUC 中删除一些选项

Question

当所有者加入房间并打开房间配置面板时，出现几个配置选项。

我想从配置面板中删除一些选项，例如

1. 最大用户数 > 最大限制为 200，但我想将最大限制设置为 30，并且字段不可编辑。 （没有人可以更改30个限制）

   1. Presence real Jids to -（默认为主持人） 我想设置默认值是所有人和隐藏字段。

   2. 广播状态的角色 （默认全选）。只想隐藏这个字段。没有任何变化。

   3. 将房间设为已审核（只想隐藏此字段。未选中。）

   4. 默认用户为参与者（只想隐藏此字段。默认选中）

   5. 允许访问者在状态广播中发送状态文本（只想隐藏此字段。未选中）

   6. 允许访问者更改昵称（只想隐藏此字段。未选中）

   7. 允许访问者发送语音请求（只想取消选中并隐藏此字段）

   8. 允许订阅（只想取消选中并隐藏此字段）

我知道这些所有修改都将在 .erl 文件中完成，我尝试这样做但没有任何反应。任何人都可以知道如何做到这一点。

请帮忙。

Answer 1

作为服务器管理员，您可以使用以下 mod_muc 选项在 ejabberd.yml 中设置默认房间值：default_room_options，请参阅https://docs.ejabberd.im/admin/configuration/#mod-muc

然后您必须修改 mod_muc_room.erl 以隐藏该字段，并且如果聪明的房间所有者手动添加选项，也不能使用这些选项。稍后你编译这个文件（或所有ejabberd），并安装修改后的mod_muc_room.beam，覆盖旧的，最后重新启动ejabberd。如果您没有看到更改，则可能是您将 beam 文件复制到了另一个地方（可能您安装了两个 ejabberd，一个正在运行，另一个是旧的并且让您感到困惑？）。

我认为此更改包含您想要的所有选项，但最好您验证一下，也许我忘记了一些。我在 ejabberd 18.09 中尝试了这种更改，它在房间配置公式中隐藏了几个选项：

diff --git a/src/mod_muc_room.erl b/src/mod_muc_room.erl
index 267514b20..a6fc0e73f 100644
--- a/src/mod_muc_room.erl
+++ b/src/mod_muc_room.erl
@@ -58,7 +58,7 @@
 -include("mod_muc_room.hrl").

 -define(MAX_USERS_DEFAULT_LIST,
-   [5, 10, 20, 30, 50, 100, 200, 500, 1000, 2000, 5000]).
+   [30]).

 -define(DEFAULT_MAX_USERS_PRESENCE,1000).

@@ -3363,23 +3363,23 @@ get_config(Lang, StateData, From) ->
                     MaxUsersRoom
                     | ?MAX_USERS_DEFAULT_LIST]),
               N =< ServiceMaxUsers]},
-    {whois, if Config#config.anonymous -> moderators;
-           true -> anyone
-        end},
-    {presencebroadcast, Config#config.presence_broadcast},
+    %{whois, if Config#config.anonymous -> moderators;
+   %       true -> anyone
+   %    end},
+    %{presencebroadcast, Config#config.presence_broadcast},
     {membersonly, Config#config.members_only},
-    {moderatedroom, Config#config.moderated},
-    {members_by_default, Config#config.members_by_default},
+    %{moderatedroom, Config#config.moderated},
+    %{members_by_default, Config#config.members_by_default},
     {changesubject, Config#config.allow_change_subj},
     {allow_private_messages, Config#config.allow_private_messages},
     {allow_private_messages_from_visitors,
      Config#config.allow_private_messages_from_visitors},
     {allow_query_users, Config#config.allow_query_users},
     {allowinvites, Config#config.allow_user_invites},
-    {allow_visitor_status, Config#config.allow_visitor_status},
-    {allow_visitor_nickchange, Config#config.allow_visitor_nickchange},
-    {allow_voice_requests, Config#config.allow_voice_requests},
-    {allow_subscription, Config#config.allow_subscription},
+    %{allow_visitor_status, Config#config.allow_visitor_status},
+    %{allow_visitor_nickchange, Config#config.allow_visitor_nickchange},
+    %{allow_voice_requests, Config#config.allow_voice_requests},
+    %{allow_subscription, Config#config.allow_subscription},
     {voice_request_min_interval, Config#config.voice_request_min_interval},
     {pubsub, Config#config.pubsub}]
    ++
@@ -3440,27 +3440,27 @@ set_config(Opts, Config, ServerHost, Lang) ->
          C#config{allow_private_messages = V};
     ({allow_private_messages_from_visitors, V}, C) ->
          C#config{allow_private_messages_from_visitors = V};
-    ({allow_visitor_status, V}, C) -> C#config{allow_visitor_status = V};
-    ({allow_visitor_nickchange, V}, C) ->
-         C#config{allow_visitor_nickchange = V};
+    %({allow_visitor_status, V}, C) -> C#config{allow_visitor_status = V};
+    %({allow_visitor_nickchange, V}, C) ->
+         %C#config{allow_visitor_nickchange = V};
     ({publicroom, V}, C) -> C#config{public = V};
     ({public_list, V}, C) -> C#config{public_list = V};
     ({persistentroom, V}, C) -> C#config{persistent = V};
-    ({moderatedroom, V}, C) -> C#config{moderated = V};
-    ({members_by_default, V}, C) -> C#config{members_by_default = V};
+    %({moderatedroom, V}, C) -> C#config{moderated = V};
+    %({members_by_default, V}, C) -> C#config{members_by_default = V};
     ({membersonly, V}, C) -> C#config{members_only = V};
     ({captcha_protected, V}, C) -> C#config{captcha_protected = V};
     ({allowinvites, V}, C) -> C#config{allow_user_invites = V};
-    ({allow_subscription, V}, C) -> C#config{allow_subscription = V};
+    %({allow_subscription, V}, C) -> C#config{allow_subscription = V};
     ({passwordprotectedroom, V}, C) -> C#config{password_protected = V};
     ({roomsecret, V}, C) -> C#config{password = V};
     ({anonymous, V}, C) -> C#config{anonymous = V};
     ({presencebroadcast, V}, C) -> C#config{presence_broadcast = V};
-    ({allow_voice_requests, V}, C) -> C#config{allow_voice_requests = V};
+    %({allow_voice_requests, V}, C) -> C#config{allow_voice_requests = V};
     ({voice_request_min_interval, V}, C) ->
          C#config{voice_request_min_interval = V};
-    ({whois, moderators}, C) -> C#config{anonymous = true};
-    ({whois, anyone}, C) -> C#config{anonymous = false};
+    %({whois, moderators}, C) -> C#config{anonymous = true};
+    %({whois, anyone}, C) -> C#config{anonymous = false};
     ({maxusers, V}, C) -> C#config{max_users = V};
     ({enablelogging, V}, C) -> C#config{logging = V};
     ({pubsub, V}, C) -> C#config{pubsub = V};

有一个选项不允许访问者更改昵称。如果您希望此选项也禁止参与者，请应用此更改：

diff --git a/src/mod_muc_room.erl b/src/mod_muc_room.erl
index 267514b20..16ce21ba1 100644
--- a/src/mod_muc_room.erl
+++ b/src/mod_muc_room.erl
@@ -1031,7 +1031,7 @@ do_process_presence(Nick, #presence{from = From, type = available, lang = Lang}
                           StateData#state.host,
                           From, Nick),
              {(StateData#state.config)#config.allow_visitor_nickchange,
-              is_visitor(From, StateData)}} of
+              is_visitor_or_participant(From, StateData)}} of
            {_, _, {false, true}} ->
                Packet1 = Packet#presence{sub_els = [#muc{}]},
                ErrText = <<"Visitors are not allowed to change their "
@@ -1501,6 +1501,11 @@ get_default_role(Affiliation, StateData) ->
 is_visitor(Jid, StateData) ->
     get_role(Jid, StateData) =:= visitor.

+is_visitor_or_participant(Jid, StateData) ->
+    (get_role(Jid, StateData) =:= visitor)
+    or
+    (get_role(Jid, StateData) =:= participant).
+
 -spec is_moderator(jid(), state()) -> boolean().
 is_moderator(Jid, StateData) ->
     get_role(Jid, StateData) =:= moderator.

另一方面，如果您想禁止所有角色更改昵称，则更改较小：

diff --git a/src/mod_muc_room.erl b/src/mod_muc_room.erl
index 267514b20..2ef75e6ed 100644
--- a/src/mod_muc_room.erl
+++ b/src/mod_muc_room.erl
@@ -1032,7 +1032,7 @@ do_process_presence(Nick, #presence{from = From, type = available, lang = Lang}
                       From, Nick),
              {(StateData#state.config)#config.allow_visitor_nickchange,
               is_visitor(From, StateData)}} of
-           {_, _, {false, true}} ->
+           {_, _, {false, _}} ->
            Packet1 = Packet#presence{sub_els = [#muc{}]},
            ErrText = <<"Visitors are not allowed to change their "
                    "nicknames in this room">>,