Chapril/xmpp.chapril.org-ejabberd
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xmpp.chapril.org-ejabberd/src/mod_irc.erl
Evgeniy Khramtsov cf53d834e9 Introduce 'iqdisc' global option
2017-05-04 12:24:47 +03:00

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%%%----------------------------------------------------------------------
%%% File : mod_irc.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : IRC transport
%%% Created : 15 Feb 2003 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2017 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(mod_irc).
-author('alexey@process-one.net').
-behaviour(gen_server).
-behaviour(gen_mod).
%% API
-export([start/2, stop/1, reload/3, export/1, import/1,
import/3, closed_connection/3, get_connection_params/3,
data_to_binary/2, process_disco_info/1, process_disco_items/1,
process_register/1, process_vcard/1, process_command/1]).
-export([init/1, handle_call/3, handle_cast/2,
handle_info/2, terminate/2, code_change/3,
mod_opt_type/1, depends/2]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("xmpp.hrl").
-include("mod_irc.hrl").
-define(DEFAULT_IRC_ENCODING, <<"iso8859-15">>).
-define(DEFAULT_IRC_PORT, 6667).
-define(DEFAULT_REALNAME, <<"WebIRC-User">>).
-define(DEFAULT_WEBIRC_PASSWORD, <<"">>).
-define(POSSIBLE_ENCODINGS,
[<<"koi8-r">>, <<"iso8859-15">>, <<"iso8859-1">>, <<"iso8859-2">>,
<<"utf-8">>, <<"utf-8+latin-1">>]).
-record(state, {host = <<"">> :: binary(),
server_host = <<"">> :: binary(),
access = all :: atom()}).
-callback init(binary(), gen_mod:opts()) -> any().
-callback import(binary(), #irc_custom{}) -> ok | pass.
-callback get_data(binary(), binary(), jid()) -> error | empty | irc_data().
-callback set_data(binary(), binary(), jid(), irc_data()) -> {atomic, any()}.
%%====================================================================
%% gen_mod API
%%====================================================================
start(Host, Opts) ->
start_supervisor(Host),
gen_mod:start_child(?MODULE, Host, Opts).
stop(Host) ->
stop_supervisor(Host),
gen_mod:stop_child(?MODULE, Host).
reload(Host, NewOpts, OldOpts) ->
Proc = gen_mod:get_module_proc(Host, ?MODULE),
gen_server:cast(Proc, {reload, Host, NewOpts, OldOpts}).
depends(_Host, _Opts) ->
[].
%%====================================================================
%% gen_server callbacks
%%====================================================================
%%--------------------------------------------------------------------
%% Function: init(Args) -> {ok, State} |
%% {ok, State, Timeout} |
%% ignore |
%% {stop, Reason}
%% Description: Initiates the server
%%--------------------------------------------------------------------
init([Host, Opts]) ->
process_flag(trap_exit, true),
ejabberd:start_app(iconv),
MyHost = gen_mod:get_opt_host(Host, Opts,
<<"irc.@HOST@">>),
Mod = gen_mod:db_mod(Host, Opts, ?MODULE),
Mod:init(Host, Opts),
Access = gen_mod:get_opt(access, Opts, all),
catch ets:new(irc_connection,
[named_table, public,
{keypos, #irc_connection.jid_server_host}]),
IQDisc = gen_mod:get_opt(iqdisc, Opts, gen_iq_handler:iqdisc(Host)),
register_hooks(MyHost, IQDisc),
ejabberd_router:register_route(MyHost, Host),
{ok,
#state{host = MyHost, server_host = Host,
access = Access}}.
%%--------------------------------------------------------------------
%% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} |
%% {reply, Reply, State, Timeout} |
%% {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, Reply, State} |
%% {stop, Reason, State}
%% Description: Handling call messages
%%--------------------------------------------------------------------
handle_call(stop, _From, State) ->
{stop, normal, ok, State}.
%%--------------------------------------------------------------------
%% Function: handle_cast(Msg, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% Description: Handling cast messages
%%--------------------------------------------------------------------
handle_cast({reload, ServerHost, NewOpts, OldOpts}, State) ->
NewHost = gen_mod:get_opt_host(ServerHost, NewOpts, <<"irc.@HOST@">>),
OldHost = gen_mod:get_opt_host(ServerHost, OldOpts, <<"irc.@HOST@">>),
NewIQDisc = gen_mod:get_opt(iqdisc, NewOpts, gen_iq_handler:iqdisc(ServerHost)),
OldIQDisc = gen_mod:get_opt(iqdisc, OldOpts, gen_iq_handler:iqdisc(ServerHost)),
NewMod = gen_mod:db_mod(ServerHost, NewOpts, ?MODULE),
OldMod = gen_mod:db_mod(ServerHost, OldOpts, ?MODULE),
Access = gen_mod:get_opt(access, NewOpts, all),
if NewMod /= OldMod ->
NewMod:init(ServerHost, NewOpts);
true ->
ok
end,
if (NewIQDisc /= OldIQDisc) or (NewHost /= OldHost) ->
register_hooks(NewHost, NewIQDisc);
true ->
ok
end,
if NewHost /= OldHost ->
ejabberd_router:register_route(NewHost, ServerHost),
ejabberd_router:unregister_route(OldHost),
unregister_hooks(OldHost);
true ->
ok
end,
Access = gen_mod:get_opt(access, NewOpts, all),
{noreply, State#state{host = NewHost, access = Access}};
handle_cast(Msg, State) ->
?WARNING_MSG("unexpected cast: ~p", [Msg]),
{noreply, State}.
%%--------------------------------------------------------------------
%% Function: handle_info(Info, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% Description: Handling all non call/cast messages
%%--------------------------------------------------------------------
handle_info({route, Packet},
#state{host = Host, server_host = ServerHost,
access = Access} =
State) ->
case catch do_route(Host, ServerHost, Access, Packet) of
{'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]);
_ -> ok
end,
{noreply, State};
handle_info(_Info, State) -> {noreply, State}.
%%--------------------------------------------------------------------
%% Function: terminate(Reason, State) -> void()
%% Description: This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any necessary
%% cleaning up. When it returns, the gen_server terminates with Reason.
%% The return value is ignored.
%%--------------------------------------------------------------------
terminate(_Reason, #state{host = MyHost}) ->
ejabberd_router:unregister_route(MyHost),
unregister_hooks(MyHost).
%%--------------------------------------------------------------------
%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState}
%% Description: Convert process state when code is changed
%%--------------------------------------------------------------------
code_change(_OldVsn, State, _Extra) -> {ok, State}.
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
register_hooks(Host, IQDisc) ->
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_DISCO_INFO,
?MODULE, process_disco_info, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_DISCO_ITEMS,
?MODULE, process_disco_items, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_REGISTER,
?MODULE, process_register, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_VCARD,
?MODULE, process_vcard, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_COMMANDS,
?MODULE, process_command, IQDisc).
unregister_hooks(Host) ->
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_DISCO_INFO),
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_DISCO_ITEMS),
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_REGISTER),
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_VCARD),
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_COMMANDS).
start_supervisor(Host) ->
Proc = gen_mod:get_module_proc(Host,
ejabberd_mod_irc_sup),
ChildSpec = {Proc,
{ejabberd_tmp_sup, start_link,
[Proc, mod_irc_connection]},
permanent, infinity, supervisor, [ejabberd_tmp_sup]},
supervisor:start_child(ejabberd_gen_mod_sup, ChildSpec).
stop_supervisor(Host) ->
Proc = gen_mod:get_module_proc(Host,
ejabberd_mod_irc_sup),
supervisor:terminate_child(ejabberd_gen_mod_sup, Proc),
supervisor:delete_child(ejabberd_gen_mod_sup, Proc).
do_route(Host, ServerHost, Access, Packet) ->
#jid{luser = LUser, lresource = LResource} = xmpp:get_to(Packet),
From = xmpp:get_from(Packet),
case acl:match_rule(ServerHost, Access, From) of
allow ->
case Packet of
#iq{} when LUser == <<"">>, LResource == <<"">> ->
ejabberd_router:process_iq(Packet);
#iq{} when LUser == <<"">>, LResource /= <<"">> ->
Err = xmpp:err_service_unavailable(),
ejabberd_router:route_error(Packet, Err);
_ ->
sm_route(Host, ServerHost, Packet)
end;
deny ->
Lang = xmpp:get_lang(Packet),
Err = xmpp:err_forbidden(<<"Denied by ACL">>, Lang),
ejabberd_router:route_error(Packet, Err)
end.
process_disco_info(#iq{type = set, lang = Lang} = IQ) ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_disco_info(#iq{type = get, lang = Lang, to = To,
sub_els = [#disco_info{node = Node}]} = IQ) ->
ServerHost = ejabberd_router:host_of_route(To#jid.lserver),
Info = ejabberd_hooks:run_fold(disco_info, ServerHost,
[], [ServerHost, ?MODULE, <<"">>, <<"">>]),
case iq_disco(ServerHost, Node, Lang) of
undefined ->
xmpp:make_iq_result(IQ, #disco_info{});
DiscoInfo ->
xmpp:make_iq_result(IQ, DiscoInfo#disco_info{xdata = Info})
end.
process_disco_items(#iq{type = set, lang = Lang} = IQ) ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_disco_items(#iq{type = get, lang = Lang, to = To,
sub_els = [#disco_items{node = Node}]} = IQ) ->
case Node of
<<"">> ->
xmpp:make_iq_result(IQ, #disco_items{});
<<"join">> ->
xmpp:make_iq_result(IQ, #disco_items{});
<<"register">> ->
xmpp:make_iq_result(IQ, #disco_items{});
?NS_COMMANDS ->
Host = To#jid.lserver,
ServerHost = ejabberd_router:host_of_route(Host),
xmpp:make_iq_result(
IQ, #disco_items{node = Node,
items = command_items(ServerHost, Host, Lang)});
_ ->
Txt = <<"Node not found">>,
xmpp:make_error(IQ, xmpp:err_item_not_found(Txt, Lang))
end.
process_register(#iq{type = get, to = To, from = From, lang = Lang} = IQ) ->
Host = To#jid.lserver,
ServerHost = ejabberd_router:host_of_route(Host),
case get_form(ServerHost, Host, From, Lang) of
{result, Res} ->
xmpp:make_iq_result(IQ, Res);
{error, Error} ->
xmpp:make_error(IQ, Error)
end;
process_register(#iq{type = set, lang = Lang, to = To, from = From,
sub_els = [#register{xdata = #xdata{} = X}]} = IQ) ->
case X#xdata.type of
cancel ->
xmpp:make_iq_result(IQ, #register{});
submit ->
Host = To#jid.lserver,
ServerHost = ejabberd_router:host_of_route(Host),
case set_form(ServerHost, Host, From, Lang, X) of
{result, Res} ->
xmpp:make_iq_result(IQ, Res);
{error, Error} ->
xmpp:make_error(IQ, Error)
end;
_ ->
Txt = <<"Incorrect value of 'type' attribute">>,
xmpp:make_error(IQ, xmpp:err_bad_request(Txt, Lang))
end;
process_register(#iq{type = set, lang = Lang} = IQ) ->
Txt = <<"No data form found">>,
xmpp:make_error(IQ, xmpp:err_bad_request(Txt, Lang)).
process_vcard(#iq{type = set, lang = Lang} = IQ) ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_vcard(#iq{type = get, lang = Lang} = IQ) ->
xmpp:make_iq_result(IQ, iq_get_vcard(Lang)).
process_command(#iq{type = get, lang = Lang} = IQ) ->
Txt = <<"Value 'get' of 'type' attribute is not allowed">>,
xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_command(#iq{type = set, lang = Lang, to = To, from = From,
sub_els = [#adhoc_command{node = Node} = Request]} = IQ) ->
Host = To#jid.lserver,
ServerHost = ejabberd_router:host_of_route(Host),
case lists:keyfind(Node, 1, commands(ServerHost)) of
{_, _, Function} ->
try Function(From, To, Request) of
ignore ->
ignore;
{error, Error} ->
xmpp:make_error(IQ, Error);
Command ->
xmpp:make_iq_result(IQ, Command)
catch E:R ->
?ERROR_MSG("ad-hoc handler failed: ~p",
[{E, {R, erlang:get_stacktrace()}}]),
xmpp:make_error(IQ, xmpp:err_internal_server_error())
end;
_ ->
Txt = <<"Node not found">>,
xmpp:make_error(IQ, xmpp:err_item_not_found(Txt, Lang))
end.
sm_route(Host, ServerHost, Packet) ->
From = xmpp:get_from(Packet),
#jid{user = ChanServ, resource = Resource} = xmpp:get_to(Packet),
case str:tokens(ChanServ, <<"%">>) of
[<<_, _/binary>> = Channel, <<_, _/binary>> = Server] ->
case ets:lookup(irc_connection, {From, Server, Host}) of
[] ->
?DEBUG("open new connection~n", []),
{Username, Encoding, Port, Password} =
get_connection_params(Host, ServerHost, From, Server),
ConnectionUsername = case Packet of
%% If the user tries to join a
%% chatroom, the packet for sure
%% contains the desired username.
#presence{} -> Resource;
%% Otherwise, there is no firm
%% conclusion from the packet.
%% Better to use the configured
%% username (which defaults to the
%% username part of the JID).
_ -> Username
end,
Ident = extract_ident(Packet),
RemoteAddr = extract_ip_address(Packet),
RealName = get_realname(ServerHost),
WebircPassword = get_webirc_password(ServerHost),
{ok, Pid} = mod_irc_connection:start(
From, Host, ServerHost, Server,
ConnectionUsername, Encoding, Port,
Password, Ident, RemoteAddr, RealName,
WebircPassword, ?MODULE),
ets:insert(irc_connection,
#irc_connection{
jid_server_host = {From, Server, Host},
pid = Pid}),
mod_irc_connection:route_chan(Pid, Channel, Resource, Packet);
[R] ->
Pid = R#irc_connection.pid,
?DEBUG("send to process ~p~n", [Pid]),
mod_irc_connection:route_chan(Pid, Channel, Resource, Packet)
end;
_ ->
Lang = xmpp:get_lang(Packet),
case str:tokens(ChanServ, <<"!">>) of
[<<_, _/binary>> = Nick, <<_, _/binary>> = Server] ->
case ets:lookup(irc_connection, {From, Server, Host}) of
[] ->
Txt = <<"IRC connection not found">>,
Err = xmpp:err_service_unavailable(Txt, Lang),
ejabberd_router:route_error(Packet, Err);
[R] ->
Pid = R#irc_connection.pid,
?DEBUG("send to process ~p~n", [Pid]),
mod_irc_connection:route_nick(Pid, Nick, Packet)
end;
_ ->
Txt = <<"Failed to parse chanserv">>,
Err = xmpp:err_bad_request(Txt, Lang),
ejabberd_router:route_error(Packet, Err)
end
end.
closed_connection(Host, From, Server) ->
ets:delete(irc_connection, {From, Server, Host}).
iq_disco(_ServerHost, <<"">>, Lang) ->
#disco_info{
identities = [#identity{category = <<"conference">>,
type = <<"irc">>,
name = translate:translate(Lang, <<"IRC Transport">>)}],
features = [?NS_DISCO_INFO, ?NS_DISCO_ITEMS, ?NS_MUC,
?NS_REGISTER, ?NS_VCARD, ?NS_COMMANDS]};
iq_disco(ServerHost, Node, Lang) ->
case lists:keyfind(Node, 1, commands(ServerHost)) of
{_, Name, _} ->
#disco_info{
identities = [#identity{category = <<"automation">>,
type = <<"command-node">>,
name = translate:translate(Lang, Name)}],
features = [?NS_COMMANDS, ?NS_XDATA]};
_ ->
undefined
end.
iq_get_vcard(Lang) ->
Desc = translate:translate(Lang, <<"ejabberd IRC module">>),
#vcard_temp{fn = <<"ejabberd/mod_irc">>,
url = ?EJABBERD_URI,
desc = <<Desc/binary, $\n, ?COPYRIGHT>>}.
command_items(ServerHost, Host, Lang) ->
lists:map(fun({Node, Name, _Function}) ->
#disco_item{jid = jid:make(Host),
node = Node,
name = translate:translate(Lang, Name)}
end, commands(ServerHost)).
commands(ServerHost) ->
[{<<"join">>, <<"Join channel">>, fun adhoc_join/3},
{<<"register">>,
<<"Configure username, encoding, port and "
"password">>,
fun (From, To, Request) ->
adhoc_register(ServerHost, From, To, Request)
end}].
get_data(ServerHost, Host, From) ->
LServer = jid:nameprep(ServerHost),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:get_data(LServer, Host, From).
get_form(ServerHost, Host, From, Lang) ->
#jid{user = User, server = Server} = From,
DefaultEncoding = get_default_encoding(Host),
Customs = case get_data(ServerHost, Host, From) of
error ->
Txt1 = <<"Database failure">>,
{error, xmpp:err_internal_server_error(Txt1, Lang)};
empty -> {User, []};
Data -> get_username_and_connection_params(Data)
end,
case Customs of
{error, _Error} ->
Customs;
{Username, ConnectionsParams} ->
Fs = [#xdata_field{type = 'text-single',
label = translate:translate(Lang, <<"IRC Username">>),
var = <<"username">>,
values = [Username]},
#xdata_field{type = fixed,
values = [str:format(
translate:translate(
Lang,
<<"If you want to specify"
" different ports, "
"passwords, encodings "
"for IRC servers, "
"fill this list with "
"values in format "
"'{\"irc server\", "
"\"encoding\", port, "
"\"password\"}'. "
"By default this "
"service use \"~s\" "
"encoding, port ~p, "
"empty password.">>),
[DefaultEncoding, ?DEFAULT_IRC_PORT])]},
#xdata_field{type = fixed,
values = [translate:translate(
Lang,
<<"Example: [{\"irc.lucky.net\", \"koi8-r\", "
"6667, \"secret\"}, {\"vendetta.fef.net\", "
"\"iso8859-1\", 7000}, {\"irc.sometestserver.n"
"et\", \"utf-8\"}].">>)]},
#xdata_field{type = 'text-multi',
label = translate:translate(
Lang, <<"Connections parameters">>),
var = <<"connections_params">>,
values = str:tokens(str:format(
"~p.",
[conn_params_to_list(
ConnectionsParams)]),
<<"\n">>)}],
X = #xdata{type = form,
title = <<(translate:translate(
Lang, <<"Registration in mod_irc for ">>))/binary,
User/binary, "@", Server/binary>>,
instructions =
[translate:translate(
Lang,
<<"Enter username, encodings, ports and "
"passwords you wish to use for connecting "
"to IRC servers">>)],
fields = Fs},
{result,
#register{instructions =
translate:translate(Lang,
<<"You need an x:data capable client to "
"configure mod_irc settings">>),
xdata = X}}
end.
set_data(ServerHost, Host, From, Data) ->
LServer = jid:nameprep(ServerHost),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:set_data(LServer, Host, From, data_to_binary(From, Data)).
set_form(ServerHost, Host, From, Lang, XData) ->
case {xmpp_util:get_xdata_values(<<"username">>, XData),
xmpp_util:get_xdata_values(<<"connections_params">>, XData)} of
{[Username], [_|_] = Strings} ->
EncString = lists:foldl(fun (S, Res) ->
<<Res/binary, S/binary, "\n">>
end, <<"">>, Strings),
case erl_scan:string(binary_to_list(EncString)) of
{ok, Tokens, _} ->
case erl_parse:parse_term(Tokens) of
{ok, ConnectionsParams} ->
case set_data(ServerHost, Host, From,
[{username, Username},
{connections_params, ConnectionsParams}]) of
{atomic, _} ->
{result, undefined};
_ ->
Txt = <<"Database failure">>,
{error, xmpp:err_internal_server_error(Txt, Lang)}
end;
_ ->
Txt = <<"Parse error">>,
{error, xmpp:err_not_acceptable(Txt, Lang)}
end;
_ ->
{error, xmpp:err_not_acceptable(<<"Scan error">>, Lang)}
end;
_ ->
Txt = <<"Incorrect value in data form">>,
{error, xmpp:err_not_acceptable(Txt, Lang)}
end.
get_connection_params(Host, From, IRCServer) ->
[_ | HostTail] = str:tokens(Host, <<".">>),
ServerHost = str:join(HostTail, <<".">>),
get_connection_params(Host, ServerHost, From,
IRCServer).
get_default_encoding(ServerHost) ->
Result = gen_mod:get_module_opt(ServerHost, ?MODULE, default_encoding,
?DEFAULT_IRC_ENCODING),
?INFO_MSG("The default_encoding configured for "
"host ~p is: ~p~n",
[ServerHost, Result]),
Result.
get_realname(ServerHost) ->
gen_mod:get_module_opt(ServerHost, ?MODULE, realname, ?DEFAULT_REALNAME).
get_webirc_password(ServerHost) ->
gen_mod:get_module_opt(ServerHost, ?MODULE, webirc_password, ?DEFAULT_WEBIRC_PASSWORD).
get_connection_params(Host, ServerHost, From,
IRCServer) ->
#jid{user = User, server = _Server} = From,
DefaultEncoding = get_default_encoding(ServerHost),
case get_data(ServerHost, Host, From) of
error ->
{User, DefaultEncoding, ?DEFAULT_IRC_PORT, <<"">>};
empty ->
{User, DefaultEncoding, ?DEFAULT_IRC_PORT, <<"">>};
Data ->
{Username, ConnParams} = get_username_and_connection_params(Data),
{NewUsername, NewEncoding, NewPort, NewPassword} = case
lists:keysearch(IRCServer,
1,
ConnParams)
of
{value,
{_, Encoding,
Port,
Password}} ->
{Username,
Encoding,
Port,
Password};
{value,
{_, Encoding,
Port}} ->
{Username,
Encoding,
Port,
<<"">>};
{value,
{_,
Encoding}} ->
{Username,
Encoding,
?DEFAULT_IRC_PORT,
<<"">>};
_ ->
{Username,
DefaultEncoding,
?DEFAULT_IRC_PORT,
<<"">>}
end,
{iolist_to_binary(NewUsername),
iolist_to_binary(NewEncoding),
if NewPort >= 0 andalso NewPort =< 65535 -> NewPort;
true -> ?DEFAULT_IRC_PORT
end,
iolist_to_binary(NewPassword)}
end.
adhoc_join(_From, _To, #adhoc_command{action = cancel} = Request) ->
xmpp_util:make_adhoc_response(Request, #adhoc_command{status = canceled});
adhoc_join(_From, _To, #adhoc_command{lang = Lang, xdata = undefined} = Request) ->
X = #xdata{type = form,
title = translate:translate(Lang, <<"Join IRC channel">>),
fields = [#xdata_field{var = <<"channel">>,
type = 'text-single',
label = translate:translate(
Lang, <<"IRC channel (don't put the first #)">>),
required = true},
#xdata_field{var = <<"server">>,
type = 'text-single',
label = translate:translate(Lang, <<"IRC server">>),
required = true}]},
xmpp_util:make_adhoc_response(
Request, #adhoc_command{status = executing, xdata = X});
adhoc_join(From, To, #adhoc_command{lang = Lang, xdata = X} = Request) ->
Channel = case xmpp_util:get_xdata_values(<<"channel">>, X) of
[C] -> C;
_ -> false
end,
Server = case xmpp_util:get_xdata_values(<<"server">>, X) of
[S] -> S;
_ -> false
end,
if Channel /= false, Server /= false ->
RoomJID = jid:make(<<Channel/binary, "%", Server/binary>>,
To#jid.server),
Reason = translate:translate(Lang, <<"Join the IRC channel here.">>),
BodyTxt = {<<"Join the IRC channel in this Jabber ID: ~s">>,
[jid:encode(RoomJID)]},
Invite = #message{
from = RoomJID, to = From,
body = xmpp:mk_text(BodyTxt, Lang),
sub_els = [#muc_user{
invites = [#muc_invite{from = From,
reason = Reason}]},
#x_conference{reason = Reason,
jid = RoomJID}]},
ejabberd_router:route(Invite),
xmpp_util:make_adhoc_response(
Request, #adhoc_command{status = completed});
true ->
Txt = <<"Missing 'channel' or 'server' in the data form">>,
{error, xmpp:err_bad_request(Txt, Lang)}
end.
-spec adhoc_register(binary(), jid(), jid(), adhoc_command()) ->
adhoc_command() | {error, stanza_error()}.
adhoc_register(_ServerHost, _From, _To,
#adhoc_command{action = cancel} = Request) ->
xmpp_util:make_adhoc_response(Request, #adhoc_command{status = canceled});
adhoc_register(ServerHost, From, To,
#adhoc_command{lang = Lang, xdata = X,
action = Action} = Request) ->
#jid{user = User} = From,
#jid{lserver = Host} = To,
{Username, ConnectionsParams} =
if X == undefined ->
case get_data(ServerHost, Host, From) of
error -> {User, []};
empty -> {User, []};
Data -> get_username_and_connection_params(Data)
end;
true ->
{case xmpp_util:get_xdata_values(<<"username">>, X) of
[U] -> U;
_ -> User
end, parse_connections_params(X)}
end,
if Action == complete ->
case set_data(ServerHost, Host, From,
[{username, Username},
{connections_params, ConnectionsParams}]) of
{atomic, _} ->
xmpp_util:make_adhoc_response(
Request, #adhoc_command{status = completed});
_ ->
Txt = <<"Database failure">>,
{error, xmpp:err_internal_server_error(Txt, Lang)}
end;
true ->
Form = generate_adhoc_register_form(Lang, Username,
ConnectionsParams),
xmpp_util:make_adhoc_response(
Request, #adhoc_command{
status = executing,
xdata = Form,
actions = #adhoc_actions{next = true,
complete = true}})
end.
generate_adhoc_register_form(Lang, Username,
ConnectionsParams) ->
#xdata{type = form,
title = translate:translate(Lang, <<"IRC settings">>),
instructions = [translate:translate(
Lang,
<<"Enter username and encodings you wish "
"to use for connecting to IRC servers. "
" Press 'Next' to get more fields to "
"fill in. Press 'Complete' to save settings.">>)],
fields = [#xdata_field{
var = <<"username">>,
type = 'text-single',
label = translate:translate(Lang, <<"IRC username">>),
required = true,
values = [Username]}
| generate_connection_params_fields(
Lang, ConnectionsParams, 1, [])]}.
generate_connection_params_fields(Lang, [], Number,
Acc) ->
Field = generate_connection_params_field(Lang, <<"">>,
<<"">>, -1, <<"">>, Number),
lists:reverse(Field ++ Acc);
generate_connection_params_fields(Lang,
[ConnectionParams | ConnectionsParams],
Number, Acc) ->
case ConnectionParams of
{Server, Encoding, Port, Password} ->
Field = generate_connection_params_field(Lang, Server,
Encoding, Port, Password,
Number),
generate_connection_params_fields(Lang,
ConnectionsParams, Number + 1,
Field ++ Acc);
{Server, Encoding, Port} ->
Field = generate_connection_params_field(Lang, Server,
Encoding, Port, <<"">>, Number),
generate_connection_params_fields(Lang,
ConnectionsParams, Number + 1,
Field ++ Acc);
{Server, Encoding} ->
Field = generate_connection_params_field(Lang, Server,
Encoding, -1, <<"">>, Number),
generate_connection_params_fields(Lang,
ConnectionsParams, Number + 1,
Field ++ Acc);
_ -> []
end.
generate_connection_params_field(Lang, Server, Encoding,
Port, Password, Number) ->
EncodingUsed = case Encoding of
<<>> -> get_default_encoding(Server);
_ -> Encoding
end,
PortUsedInt = if Port >= 0 andalso Port =< 65535 ->
Port;
true -> ?DEFAULT_IRC_PORT
end,
PortUsed = integer_to_binary(PortUsedInt),
PasswordUsed = case Password of
<<>> -> <<>>;
_ -> Password
end,
NumberString = integer_to_binary(Number),
[#xdata_field{var = <<"password", NumberString/binary>>,
type = 'text-single',
label = str:format(
translate:translate(Lang, <<"Password ~b">>),
[Number]),
values = [PasswordUsed]},
#xdata_field{var = <<"port", NumberString/binary>>,
type = 'text-single',
label = str:format(
translate:translate(Lang, <<"Port ~b">>),
[Number]),
values = [PortUsed]},
#xdata_field{var = <<"encoding", NumberString/binary>>,
type = 'list-single',
label = str:format(
translate:translate(Lang, <<"Encoding for server ~b">>),
[Number]),
values = [EncodingUsed],
options = [#xdata_option{label = E, value = E}
|| E <- ?POSSIBLE_ENCODINGS]},
#xdata_field{var = <<"server", NumberString/binary>>,
type = 'text-single',
label = str:format(
translate:translate(Lang, <<"Server ~b">>),
[Number]),
values = [Server]}].
parse_connections_params(#xdata{fields = Fields}) ->
Servers = lists:flatmap(
fun(#xdata_field{var = <<"server", Var/binary>>,
values = Values}) ->
[{Var, Values}];
(_) ->
[]
end, Fields),
Encodings = lists:flatmap(
fun(#xdata_field{var = <<"encoding", Var/binary>>,
values = Values}) ->
[{Var, Values}];
(_) ->
[]
end, Fields),
Ports = lists:flatmap(
fun(#xdata_field{var = <<"port", Var/binary>>,
values = Values}) ->
[{Var, Values}];
(_) ->
[]
end, Fields),
Passwords = lists:flatmap(
fun(#xdata_field{var = <<"password", Var/binary>>,
values = Values}) ->
[{Var, Values}];
(_) ->
[]
end, Fields),
parse_connections_params(Servers, Encodings, Ports, Passwords).
retrieve_connections_params(ConnectionParams,
ServerN) ->
case ConnectionParams of
[{ConnectionParamN, ConnectionParam}
| ConnectionParamsTail] ->
if ServerN == ConnectionParamN ->
{ConnectionParam, ConnectionParamsTail};
ServerN < ConnectionParamN ->
{[],
[{ConnectionParamN, ConnectionParam}
| ConnectionParamsTail]};
ServerN > ConnectionParamN -> {[], ConnectionParamsTail}
end;
_ -> {[], []}
end.
parse_connections_params([], _, _, _) -> [];
parse_connections_params(_, [], [], []) -> [];
parse_connections_params([{ServerN, Server} | Servers],
Encodings, Ports, Passwords) ->
{NewEncoding, NewEncodings} =
retrieve_connections_params(Encodings, ServerN),
{NewPort, NewPorts} = retrieve_connections_params(Ports,
ServerN),
{NewPassword, NewPasswords} =
retrieve_connections_params(Passwords, ServerN),
[{Server, NewEncoding, NewPort, NewPassword}
| parse_connections_params(Servers, NewEncodings,
NewPorts, NewPasswords)].
get_username_and_connection_params(Data) ->
Username = case lists:keysearch(username, 1, Data) of
{value, {_, U}} when is_binary(U) ->
U;
_ ->
<<"">>
end,
ConnParams = case lists:keysearch(connections_params, 1, Data) of
{value, {_, L}} when is_list(L) ->
L;
_ ->
[]
end,
{Username, ConnParams}.
data_to_binary(JID, Data) ->
lists:map(
fun({username, U}) ->
{username, iolist_to_binary(U)};
({connections_params, Params}) ->
{connections_params,
lists:flatmap(
fun(Param) ->
try
[conn_param_to_binary(Param)]
catch _:_ ->
if JID /= error ->
?ERROR_MSG("failed to convert "
"parameter ~p for user ~s",
[Param,
jid:encode(JID)]);
true ->
?ERROR_MSG("failed to convert "
"parameter ~p",
[Param])
end,
[]
end
end, Params)};
(Opt) ->
Opt
end, Data).
conn_param_to_binary({S}) ->
{iolist_to_binary(S)};
conn_param_to_binary({S, E}) ->
{iolist_to_binary(S), iolist_to_binary(E)};
conn_param_to_binary({S, E, Port}) when is_integer(Port) ->
{iolist_to_binary(S), iolist_to_binary(E), Port};
conn_param_to_binary({S, E, Port, P}) when is_integer(Port) ->
{iolist_to_binary(S), iolist_to_binary(E), Port, iolist_to_binary(P)}.
conn_params_to_list(Params) ->
lists:map(
fun({S}) ->
{binary_to_list(S)};
({S, E}) ->
{binary_to_list(S), binary_to_list(E)};
({S, E, Port}) ->
{binary_to_list(S), binary_to_list(E), Port};
({S, E, Port, P}) ->
{binary_to_list(S), binary_to_list(E),
Port, binary_to_list(P)}
end, Params).
export(LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:export(LServer).
import(LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:import(LServer).
import(LServer, DBType, Data) ->
Mod = gen_mod:db_mod(DBType, ?MODULE),
Mod:import(LServer, Data).
mod_opt_type(access) ->
fun acl:access_rules_validator/1;
mod_opt_type(db_type) -> fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
mod_opt_type(default_encoding) ->
fun iolist_to_binary/1;
mod_opt_type(host) -> fun iolist_to_binary/1;
mod_opt_type(_) ->
[access, db_type, default_encoding, host].
-spec extract_ident(stanza()) -> binary().
extract_ident(Packet) ->
Hdrs = extract_headers(Packet),
proplists:get_value(<<"X-Irc-Ident">>, Hdrs, <<"chatmovil">>).
-spec extract_ip_address(stanza()) -> binary().
extract_ip_address(Packet) ->
Hdrs = extract_headers(Packet),
proplists:get_value(<<"X-Forwarded-For">>, Hdrs, <<"127.0.0.1">>).
-spec extract_headers(stanza()) -> [{binary(), binary()}].
extract_headers(Packet) ->
case xmpp:get_subtag(Packet, #shim{}) of
#shim{headers = Hs} -> Hs;
false -> []
end.
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