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xmpp.chapril.org-ejabberd/src/mod_register.erl
Mickaël Rémond eee30112ef * Added TODO comment
SVN Revision: 833
2007-07-26 10:13:04 +00:00

235 lines
6.6 KiB
Erlang

%%%----------------------------------------------------------------------
%%% File : mod_register.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose : Inband registration support
%%% Created : 8 Dec 2002 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(mod_register).
-author('alexey@sevcom.net').
-behaviour(gen_mod).
-export([start/2,
stop/1,
stream_feature_register/1,
unauthenticated_iq_register/3,
process_iq/3]).
-include("ejabberd.hrl").
-include("jlib.hrl").
start(Host, Opts) ->
IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue),
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_REGISTER,
?MODULE, process_iq, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_REGISTER,
?MODULE, process_iq, IQDisc),
ejabberd_hooks:add(c2s_stream_features, Host,
?MODULE, stream_feature_register, 50),
ejabberd_hooks:add(c2s_unauthenticated_iq, Host,
?MODULE, unauthenticated_iq_register, 50),
ok.
stop(Host) ->
ejabberd_hooks:delete(c2s_stream_features, Host,
?MODULE, stream_feature_register, 50),
ejabberd_hooks:delete(c2s_unauthenticated_iq, Host,
?MODULE, unauthenticated_iq_register, 50),
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_REGISTER),
gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_REGISTER).
stream_feature_register(Acc) ->
[{xmlelement, "register",
[{"xmlns", ?NS_FEATURE_IQREGISTER}], []} | Acc].
unauthenticated_iq_register(_Acc, Server, #iq{xmlns = ?NS_REGISTER} = IQ) ->
ResIQ = process_iq(jlib:make_jid("", "", ""),
jlib:make_jid("", Server, ""),
IQ),
Res1 = jlib:replace_from_to(jlib:make_jid("", Server, ""),
jlib:make_jid("", "", ""),
jlib:iq_to_xml(ResIQ)),
jlib:remove_attr("to", Res1);
unauthenticated_iq_register(Acc, _Server, _IQ) ->
Acc.
process_iq(From, To,
#iq{type = Type, lang = Lang, sub_el = SubEl, id = ID} = IQ) ->
case Type of
set ->
UTag = xml:get_subtag(SubEl, "username"),
PTag = xml:get_subtag(SubEl, "password"),
RTag = xml:get_subtag(SubEl, "remove"),
Server = To#jid.lserver,
if
(UTag /= false) and (RTag /= false) ->
User = xml:get_tag_cdata(UTag),
case From of
#jid{user = User, lserver = Server} ->
ejabberd_auth:remove_user(User, Server),
IQ#iq{type = result, sub_el = [SubEl]};
_ ->
if
PTag /= false ->
Password = xml:get_tag_cdata(PTag),
case ejabberd_auth:remove_user(User,
Server,
Password) of
ok ->
IQ#iq{type = result,
sub_el = [SubEl]};
%% TODO FIXME: This piece of
%% code does not work since
%% the code have been changed
%% to allow several auth
%% modules. lists:foreach can
%% only return ok:
not_allowed ->
IQ#iq{type = error,
sub_el =
[SubEl, ?ERR_NOT_ALLOWED]};
not_exists ->
IQ#iq{type = error,
sub_el =
[SubEl, ?ERR_ITEM_NOT_FOUND]};
_ ->
IQ#iq{type = error,
sub_el =
[SubEl,
?ERR_INTERNAL_SERVER_ERROR]}
end;
true ->
IQ#iq{type = error,
sub_el = [SubEl, ?ERR_BAD_REQUEST]}
end
end;
(UTag == false) and (RTag /= false) ->
case From of
#jid{user = User,
lserver = Server,
resource = Resource} ->
ResIQ = #iq{type = result, xmlns = ?NS_REGISTER,
id = ID,
sub_el = [SubEl]},
ejabberd_router:route(
jlib:make_jid(User, Server, Resource),
jlib:make_jid(User, Server, Resource),
jlib:iq_to_xml(ResIQ)),
ejabberd_auth:remove_user(User, Server),
ignore;
_ ->
IQ#iq{type = error,
sub_el = [SubEl, ?ERR_NOT_ALLOWED]}
end;
(UTag /= false) and (PTag /= false) ->
User = xml:get_tag_cdata(UTag),
Password = xml:get_tag_cdata(PTag),
case From of
#jid{user = User, lserver = Server} ->
ejabberd_auth:set_password(User, Server, Password),
IQ#iq{type = result, sub_el = [SubEl]};
_ ->
case try_register(User, Server, Password) of
ok ->
IQ#iq{type = result, sub_el = [SubEl]};
{error, Error} ->
IQ#iq{type = error,
sub_el = [SubEl, Error]}
end
end;
true ->
IQ#iq{type = error,
sub_el = [SubEl, ?ERR_BAD_REQUEST]}
end;
get ->
IQ#iq{type = result,
sub_el = [{xmlelement,
"query",
[{"xmlns", "jabber:iq:register"}],
[{xmlelement, "instructions", [],
[{xmlcdata,
translate:translate(
Lang,
"Choose a username and password "
"to register with this server")}]},
{xmlelement, "username", [], []},
{xmlelement, "password", [], []}]}]}
end.
try_register(User, Server, Password) ->
case jlib:is_nodename(User) of
false ->
{error, ?ERR_BAD_REQUEST};
_ ->
JID = jlib:make_jid(User, Server, ""),
Access = gen_mod:get_module_opt(Server, ?MODULE, access, all),
case acl:match_rule(Server, Access, JID) of
deny ->
{error, ?ERR_CONFLICT};
allow ->
case ejabberd_auth:try_register(User, Server, Password) of
{atomic, ok} ->
send_welcome_message(JID),
send_registration_notifications(JID),
ok;
{atomic, exists} ->
{error, ?ERR_CONFLICT};
{error, invalid_jid} ->
{error, ?ERR_JID_MALFORMED};
{error, not_allowed} ->
{error, ?ERR_NOT_ALLOWED};
{error, _Reason} ->
{error, ?ERR_INTERNAL_SERVER_ERROR}
end
end
end.
send_welcome_message(JID) ->
Host = JID#jid.lserver,
case ejabberd_config:get_local_option({welcome_message, Host}) of
{"", ""} ->
ok;
{Subj, Body} ->
ejabberd_router:route(
jlib:make_jid("", Host, ""),
JID,
{xmlelement, "message", [{"type", "normal"}],
[{xmlelement, "subject", [], [{xmlcdata, Subj}]},
{xmlelement, "body", [], [{xmlcdata, Body}]}]});
_ ->
ok
end.
send_registration_notifications(UJID) ->
Host = UJID#jid.lserver,
case ejabberd_config:get_local_option({registration_watchers, Host}) of
[] -> ok;
JIDs when is_list(JIDs) ->
Body = lists:flatten(
io_lib:format(
"The user '~s' was just created on node ~w.",
[jlib:jid_to_string(UJID), node()])),
lists:foreach(
fun(S) ->
case jlib:string_to_jid(S) of
error -> ok;
JID ->
ejabberd_router:route(
jlib:make_jid("", Host, ""),
JID,
{xmlelement, "message", [{"type", "chat"}],
[{xmlelement, "body", [],
[{xmlcdata, Body}]}]})
end
end, JIDs);
_ ->
ok
end.