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xmpp.chapril.org-ejabberd/src/mod_irc_connection.erl
Evgeniy Khramtsov cdc7c1d1ed Update copyright dates
2018-01-05 23:18:58 +03:00

1207 lines
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%%%----------------------------------------------------------------------
%%% File : mod_irc_connection.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose :
%%% Created : 15 Feb 2003 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2018 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_connection).
-author('alexey@process-one.net').
-behaviour(p1_fsm).
%% External exports
-export([start_link/12, start/13, route_chan/4,
route_nick/3]).
%% gen_fsm callbacks
-export([init/1, open_socket/2, wait_for_registration/2,
stream_established/2, handle_event/3,
handle_sync_event/4, handle_info/3, terminate/3,
code_change/4]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("xmpp.hrl").
-define(SETS, gb_sets).
-record(state,
{socket :: inet:socket() | undefined,
encoding = <<"">> :: binary(),
port = 0 :: inet:port_number(),
password = <<"">> :: binary(),
user = #jid{} :: jid(),
host = <<"">> :: binary(),
server = <<"">> :: binary(),
remoteAddr = <<"">> :: binary(),
ident = <<"">> :: binary(),
realname = <<"">> :: binary(),
nick = <<"">> :: binary(),
channels = dict:new() :: ?TDICT,
nickchannel :: binary() | undefined,
webirc_password :: binary(),
mod = mod_irc :: atom(),
inbuf = <<"">> :: binary(),
outbuf = <<"">> :: binary()}).
-type state() :: #state{}.
%-define(DBGFSM, true).
-ifdef(DBGFSM).
-define(FSMOPTS, [{debug, [trace]}]).
-else.
-define(FSMOPTS, []).
%%%----------------------------------------------------------------------
%%% API
%%%----------------------------------------------------------------------
-endif.
start(From, Host, ServerHost, Server, Username,
Encoding, Port, Password, Ident, RemoteAddr, RealName, WebircPassword, Mod) ->
Supervisor = gen_mod:get_module_proc(ServerHost,
ejabberd_mod_irc_sup),
supervisor:start_child(Supervisor,
[From, Host, Server, Username, Encoding, Port,
Password, Ident, RemoteAddr, RealName, WebircPassword, Mod]).
start_link(From, Host, Server, Username, Encoding, Port,
Password, Ident, RemoteAddr, RealName, WebircPassword, Mod) ->
p1_fsm:start_link(?MODULE,
[From, Host, Server, Username, Encoding, Port, Password,
Ident, RemoteAddr, RealName, WebircPassword, Mod],
?FSMOPTS).
%%%----------------------------------------------------------------------
%%% Callback functions from gen_fsm
%%%----------------------------------------------------------------------
%%----------------------------------------------------------------------
%% Func: init/1
%% Returns: {ok, StateName, StateData} |
%% {ok, StateName, StateData, Timeout} |
%% ignore |
%% {stop, StopReason}
%%----------------------------------------------------------------------
init([From, Host, Server, Username, Encoding, Port,
Password, Ident, RemoteAddr, RealName, WebircPassword, Mod]) ->
p1_fsm:send_event(self(), init),
{ok, open_socket,
#state{mod = Mod,
encoding = Encoding, port = Port, password = Password,
user = From, nick = Username, host = Host,
server = Server, ident = Ident, realname = RealName,
remoteAddr = RemoteAddr, webirc_password = WebircPassword }}.
%%----------------------------------------------------------------------
%% Func: StateName/2
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData}
%%----------------------------------------------------------------------
open_socket(init, StateData) ->
Addr = StateData#state.server,
Port = StateData#state.port,
?DEBUG("Connecting with IPv6 to ~s:~p", [Addr, Port]),
From = StateData#state.user,
#jid{user = JidUser, server = JidServer, resource = JidResource} = From,
UserIP = ejabberd_sm:get_user_ip(JidUser, JidServer, JidResource),
UserIPStr = inet_parse:ntoa(element(1, UserIP)),
Connect6 = gen_tcp:connect(binary_to_list(Addr), Port,
[inet6, binary, {packet, 0}]),
Connect = case Connect6 of
{error, _} ->
?DEBUG("Connection with IPv6 to ~s:~p failed. "
"Now using IPv4.",
[Addr, Port]),
gen_tcp:connect(binary_to_list(Addr), Port,
[inet, binary, {packet, 0}]);
_ -> Connect6
end,
case Connect of
{ok, Socket} ->
NewStateData = StateData#state{socket = Socket},
send_text(NewStateData,
io_lib:format("WEBIRC ~s ~s ~s ~s\r\n", [StateData#state.webirc_password, JidResource, UserIPStr, UserIPStr])),
if StateData#state.password /= <<"">> ->
send_text(NewStateData,
io_lib:format("PASS ~s\r\n",
[StateData#state.password]));
true -> true
end,
send_text(NewStateData,
io_lib:format("NICK ~s\r\n", [StateData#state.nick])),
send_text(NewStateData,
io_lib:format("USER ~s ~s ~s :~s\r\n",
[StateData#state.ident,
StateData#state.nick,
StateData#state.host,
StateData#state.realname])),
{next_state, wait_for_registration, NewStateData};
{error, Reason} ->
?DEBUG("connect return ~p~n", [Reason]),
Text = case Reason of
timeout -> <<"Server Connect Timeout">>;
_ -> <<"Server Connect Failed">>
end,
bounce_messages(Text),
{stop, normal, StateData}
end.
wait_for_registration(closed, StateData) ->
{stop, normal, StateData}.
stream_established({xmlstreamend, _Name}, StateData) ->
{stop, normal, StateData};
stream_established(timeout, StateData) ->
{stop, normal, StateData};
stream_established(closed, StateData) ->
{stop, normal, StateData}.
%%----------------------------------------------------------------------
%% Func: StateName/3
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {reply, Reply, NextStateName, NextStateData} |
%% {reply, Reply, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} |
%% {stop, Reason, Reply, NewStateData}
%%----------------------------------------------------------------------
%state_name(Event, From, StateData) ->
% Reply = ok,
% {reply, Reply, state_name, StateData}.
%%----------------------------------------------------------------------
%% Func: handle_event/3
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData}
%%----------------------------------------------------------------------
handle_event(_Event, StateName, StateData) ->
{next_state, StateName, StateData}.
%%----------------------------------------------------------------------
%% Func: handle_sync_event/4
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {reply, Reply, NextStateName, NextStateData} |
%% {reply, Reply, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} |
%% {stop, Reason, Reply, NewStateData}
%%----------------------------------------------------------------------
handle_sync_event(_Event, _From, StateName,
StateData) ->
Reply = ok, {reply, Reply, StateName, StateData}.
code_change(_OldVsn, StateName, StateData, _Extra) ->
{ok, StateName, StateData}.
-define(SEND(S),
if StateName == stream_established ->
send_text(StateData, S), StateData;
true ->
StateData#state{outbuf = <<(StateData#state.outbuf)/binary,
(iolist_to_binary(S))/binary>>}
end).
-spec get_password_from_presence(presence()) -> {true, binary()} | false.
get_password_from_presence(#presence{} = Pres) ->
case xmpp:get_subtag(Pres, #muc{}) of
#muc{password = Password} ->
{true, Password};
_ ->
false
end.
%%----------------------------------------------------------------------
%% Func: handle_info/3
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData}
%%----------------------------------------------------------------------
handle_info({route_chan, _, _, #presence{type = error}}, _, StateData) ->
{stop, normal, StateData};
handle_info({route_chan, Channel, _, #presence{type = unavailable}},
StateName, StateData) ->
send_stanza_unavailable(Channel, StateData),
S1 = (?SEND((io_lib:format("PART #~s\r\n", [Channel])))),
S2 = S1#state{channels = dict:erase(Channel, S1#state.channels)},
{next_state, StateName, S2};
handle_info({route_chan, Channel, Resource,
#presence{type = available} = Presence},
StateName, StateData) ->
Nick = case Resource of
<<"">> -> StateData#state.nick;
_ -> Resource
end,
S1 = if Nick /= StateData#state.nick ->
S11 = (?SEND((io_lib:format("NICK ~s\r\n", [Nick])))),
S11#state{nickchannel = Channel};
true -> StateData
end,
{next_state, StateName,
case dict:is_key(Channel, S1#state.channels) of
true -> S1;
_ ->
case get_password_from_presence(Presence) of
{true, Password} ->
S2 = ?SEND((io_lib:format("JOIN #~s ~s\r\n",
[Channel, Password])));
_ ->
S2 = ?SEND((io_lib:format("JOIN #~s\r\n", [Channel])))
end,
S2#state{channels = dict:store(Channel, ?SETS:new(),
S1#state.channels)}
end};
handle_info({route_chan, Channel, _Resource, #message{type = groupchat} = Msg},
StateName, StateData) ->
{next_state, StateName,
case xmpp:get_text(Msg#message.subject) of
<<"">> ->
ejabberd_router:route(
xmpp:set_from_to(
Msg,
jid:make(
iolist_to_binary([Channel, <<"%">>, StateData#state.server]),
StateData#state.host,
StateData#state.nick),
StateData#state.user)),
Body = xmpp:get_text(Msg#message.body),
case Body of
<<"/quote ", Rest/binary>> ->
?SEND(<<Rest/binary, "\r\n">>);
<<"/msg ", Rest/binary>> ->
?SEND(<<"PRIVMSG ", Rest/binary, "\r\n">>);
<<"/me ", Rest/binary>> ->
Strings = str:tokens(Rest, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format(
"PRIVMSG #~s :\001ACTION ~s\001\r\n",
[Channel, S])
end,
Strings)),
?SEND(Res);
<<"/ctcp ", Rest/binary>> ->
Words = str:tokens(Rest, <<" ">>),
case Words of
[CtcpDest | _] ->
CtcpCmd = str:to_upper(
str:substr(
Rest, str:str(Rest, <<" ">>) + 1)),
Res = io_lib:format("PRIVMSG ~s :\001~s\001\r\n",
[CtcpDest, CtcpCmd]),
?SEND(Res);
_ -> ok
end;
_ ->
Strings = str:tokens(Body, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format("PRIVMSG #~s :~s\r\n",
[Channel, S])
end, Strings)),
?SEND(Res)
end;
Subject ->
Strings = str:tokens(Subject, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format("TOPIC #~s :~s\r\n",
[Channel, S])
end,
Strings)),
?SEND(Res)
end};
handle_info({route_chan, _Channel, Resource, #message{type = Type} = Msg},
StateName, StateData) when Type == chat; Type == normal ->
Body = xmpp:get_text(Msg#message.body),
{next_state, StateName,
case Body of
<<"/quote ", Rest/binary>> ->
?SEND(<<Rest/binary, "\r\n">>);
<<"/msg ", Rest/binary>> ->
?SEND(<<"PRIVMSG ", Rest/binary, "\r\n">>);
<<"/me ", Rest/binary>> ->
Strings = str:tokens(Rest, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format(
"PRIVMSG ~s :\001ACTION ~s\001\r\n",
[Resource, S])
end, Strings)),
?SEND(Res);
<<"/ctcp ", Rest/binary>> ->
Words = str:tokens(Rest, <<" ">>),
case Words of
[CtcpDest | _] ->
CtcpCmd = str:to_upper(
str:substr(
Rest, str:str(Rest, <<" ">>) + 1)),
Res = io_lib:format("PRIVMSG ~s :~s\r\n",
[CtcpDest,
<<"\001", CtcpCmd/binary, "\001">>]),
?SEND(Res);
_ -> ok
end;
_ ->
Strings = str:tokens(Body, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format("PRIVMSG ~s :~s\r\n",
[Resource, S])
end, Strings)),
?SEND(Res)
end};
handle_info({route_chan, _, _, #message{type = error}}, _, StateData) ->
{stop, normal, StateData};
handle_info({route_chan, Channel, Resource,
#iq{type = T, sub_els = [_]} = Packet},
StateName, StateData) when T == set; T == get ->
From = StateData#state.user,
To = jid:make(iolist_to_binary([Channel, <<"%">>, StateData#state.server]),
StateData#state.host, StateData#state.nick),
try xmpp:decode_els(Packet) of
#iq{sub_els = [SubEl]} = IQ ->
case xmpp:get_ns(SubEl) of
?NS_MUC_ADMIN ->
iq_admin(StateData, Channel, From, To, IQ);
?NS_VERSION ->
Res = io_lib:format("PRIVMSG ~s :\001VERSION\001\r\n",
[Resource]),
_ = (?SEND(Res)),
Err = xmpp:err_feature_not_implemented(),
ejabberd_router:route_error(Packet, Err);
?NS_TIME ->
Res = io_lib:format("PRIVMSG ~s :\001TIME\001\r\n",
[Resource]),
_ = (?SEND(Res)),
Err = xmpp:err_feature_not_implemented(),
ejabberd_router:route_error(Packet, Err);
?NS_VCARD ->
Res = io_lib:format("WHOIS ~s \r\n", [Resource]),
_ = (?SEND(Res)),
Err = xmpp:err_feature_not_implemented(),
ejabberd_router:route_error(Packet, Err);
_ ->
Err = xmpp:err_feature_not_implemented(),
ejabberd_router:route_error(Packet, Err)
end
catch _:{xmpp_codec, Why} ->
Err = xmpp:err_bad_request(
xmpp:io_format_error(Why), xmpp:get_lang(Packet)),
ejabberd_router:route_error(Packet, Err)
end,
{next_state, StateName, StateData};
handle_info({route_chan, _Channel, _, #iq{} = IQ}, StateName, StateData) ->
Err = xmpp:err_feature_not_implemented(),
ejabberd_router:route_error(IQ, Err),
{next_state, StateName, StateData};
handle_info({route_nick, Nick, #message{type = chat} = Msg},
StateName, StateData) ->
Body = xmpp:get_text(Msg#message.body),
{next_state, StateName,
case Body of
<<"/quote ", Rest/binary>> ->
?SEND(<<Rest/binary, "\r\n">>);
<<"/msg ", Rest/binary>> ->
?SEND(<<"PRIVMSG ", Rest/binary, "\r\n">>);
<<"/me ", Rest/binary>> ->
Strings = str:tokens(Rest, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format(
"PRIVMSG ~s :\001ACTION ~s\001\r\n",
[Nick, S])
end,
Strings)),
?SEND(Res);
<<"/ctcp ", Rest/binary>> ->
Words = str:tokens(Rest, <<" ">>),
case Words of
[CtcpDest | _] ->
CtcpCmd = str:to_upper(
str:substr(Rest,
str:str(Rest,
<<" ">>)
+ 1)),
Res = io_lib:format("PRIVMSG ~s :~s\r\n",
[CtcpDest,
<<"\001",
CtcpCmd/binary,
"\001">>]),
?SEND(Res);
_ -> ok
end;
_ ->
Strings = str:tokens(Body, <<"\n">>),
Res = iolist_to_binary(
lists:map(
fun (S) ->
io_lib:format(
"PRIVMSG ~s :~s\r\n",
[Nick, S])
end,
Strings)),
?SEND(Res)
end};
handle_info({route_nick, _, #message{type = error}}, _, StateData) ->
{stop, normal, StateData};
handle_info({route_nick, _Nick, _Packet}, StateName,
StateData) ->
{next_state, StateName, StateData};
handle_info({ircstring,
<<$P, $I, $N, $G, $\s, ID/binary>>},
StateName, StateData) ->
send_text(StateData, <<"PONG ", ID/binary, "\r\n">>),
{next_state, StateName, StateData};
handle_info({ircstring, <<$:, String/binary>>},
wait_for_registration, StateData) ->
Words = str:tokens(String, <<" ">>),
{NewState, NewStateData} = case Words of
[_, <<"001">> | _] ->
send_text(StateData,
io_lib:format("CODEPAGE ~s\r\n",
[StateData#state.encoding])),
{stream_established, StateData};
[_, <<"433">> | _] ->
{error,
{error,
error_nick_in_use(StateData, String),
StateData}};
[_, <<$4, _, _>> | _] ->
{error,
{error,
error_unknown_num(StateData, String,
cancel),
StateData}};
[_, <<$5, _, _>> | _] ->
{error,
{error,
error_unknown_num(StateData, String,
cancel),
StateData}};
_ ->
?DEBUG("unknown irc command '~s'~n",
[String]),
{wait_for_registration, StateData}
end,
if NewState == error -> {stop, normal, NewStateData};
true -> {next_state, NewState, NewStateData}
end;
handle_info({ircstring, <<$:, String/binary>>},
_StateName, StateData) ->
Words = str:tokens(String, <<" ">>),
NewStateData = case Words of
[_, <<"353">> | Items] ->
process_channel_list(StateData, Items);
[_, <<"332">>, _Nick, <<$#, Chan/binary>> | _] ->
process_channel_topic(StateData, Chan, String),
StateData;
[_, <<"333">>, _Nick, <<$#, Chan/binary>> | _] ->
process_channel_topic_who(StateData, Chan, String),
StateData;
[_, <<"318">>, _, Nick | _] ->
process_endofwhois(StateData, String, Nick), StateData;
[_, <<"311">>, _, Nick, Ident, Irchost | _] ->
process_whois311(StateData, String, Nick, Ident,
Irchost),
StateData;
[_, <<"312">>, _, Nick, Ircserver | _] ->
process_whois312(StateData, String, Nick, Ircserver),
StateData;
[_, <<"319">>, _, Nick | _] ->
process_whois319(StateData, String, Nick), StateData;
[_, <<"433">> | _] ->
process_nick_in_use(StateData, String);
% CODEPAGE isn't standard, so don't complain if it's not there.
[_, <<"421">>, _, <<"CODEPAGE">> | _] -> StateData;
[_, <<$4, _, _>> | _] ->
process_num_error(StateData, String);
[_, <<$5, _, _>> | _] ->
process_num_error(StateData, String);
[From, <<"PRIVMSG">>, <<$#, Chan/binary>> | _] ->
process_chanprivmsg(StateData, Chan, From, String),
StateData;
[From, <<"NOTICE">>, <<$#, Chan/binary>> | _] ->
process_channotice(StateData, Chan, From, String),
StateData;
[From, <<"PRIVMSG">>, Nick, <<":\001VERSION\001">>
| _] ->
process_version(StateData, Nick, From), StateData;
[From, <<"PRIVMSG">>, Nick, <<":\001USERINFO\001">>
| _] ->
process_userinfo(StateData, Nick, From), StateData;
[From, <<"PRIVMSG">>, Nick | _] ->
process_privmsg(StateData, Nick, From, String),
StateData;
[From, <<"NOTICE">>, Nick | _] ->
process_notice(StateData, Nick, From, String),
StateData;
[From, <<"TOPIC">>, <<$#, Chan/binary>> | _] ->
process_topic(StateData, Chan, From, String),
StateData;
[From, <<"PART">>, <<$#, Chan/binary>> | _] ->
process_part(StateData, Chan, From, String);
[From, <<"QUIT">> | _] ->
process_quit(StateData, From, String);
[From, <<"JOIN">>, Chan | _] ->
process_join(StateData, Chan, From, String);
[From, <<"MODE">>, <<$#, Chan/binary>>, <<"+o">>, Nick
| _] ->
process_mode_o(StateData, Chan, From, Nick,
admin, moderator),
StateData;
[From, <<"MODE">>, <<$#, Chan/binary>>, <<"-o">>, Nick
| _] ->
process_mode_o(StateData, Chan, From, Nick,
member, participant),
StateData;
[From, <<"KICK">>, <<$#, Chan/binary>>, Nick | _] ->
process_kick(StateData, Chan, From, Nick, String),
StateData;
[From, <<"NICK">>, Nick | _] ->
process_nick(StateData, From, Nick);
_ ->
?DEBUG("unknown irc command '~s'~n", [String]),
StateData
end,
NewStateData1 = case StateData#state.outbuf of
<<"">> -> NewStateData;
Data ->
send_text(NewStateData, Data),
NewStateData#state{outbuf = <<"">>}
end,
{next_state, stream_established, NewStateData1};
handle_info({ircstring,
<<$E, $R, $R, $O, $R, _/binary>> = String},
StateName, StateData) ->
process_error(StateData, String),
{next_state, StateName, StateData};
handle_info({ircstring, String}, StateName,
StateData) ->
?DEBUG("unknown irc command '~s'~n", [String]),
{next_state, StateName, StateData};
handle_info({send_text, Text}, StateName, StateData) ->
send_text(StateData, Text),
{next_state, StateName, StateData};
handle_info({tcp, _Socket, Data}, StateName,
StateData) ->
Buf = <<(StateData#state.inbuf)/binary, Data/binary>>,
Strings = ejabberd_regexp:split(<< <<C>>
|| <<C>> <= Buf, C /= $\r >>,
<<"\n">>),
?DEBUG("strings=~p~n", [Strings]),
NewBuf = process_lines(StateData#state.encoding,
Strings),
{next_state, StateName,
StateData#state{inbuf = NewBuf}};
handle_info({tcp_closed, _Socket}, StateName,
StateData) ->
p1_fsm:send_event(self(), closed),
{next_state, StateName, StateData};
handle_info({tcp_error, _Socket, _Reason}, StateName,
StateData) ->
p1_fsm:send_event(self(), closed),
{next_state, StateName, StateData}.
%%----------------------------------------------------------------------
%% Func: terminate/3
%% Purpose: Shutdown the fsm
%% Returns: any
%%----------------------------------------------------------------------
terminate(_Reason, _StateName, FullStateData) ->
{Error, StateData} = case FullStateData of
{error, SError, SStateData} -> {SError, SStateData};
_ ->
{xmpp:err_internal_server_error(
<<"Server Connect Failed">>, ?MYLANG),
FullStateData}
end,
(StateData#state.mod):closed_connection(StateData#state.host,
StateData#state.user,
StateData#state.server),
bounce_messages(<<"Server Connect Failed">>),
lists:foreach(fun (Chan) ->
Stanza = xmpp:make_error(#presence{}, Error),
send_stanza(Chan, StateData, Stanza)
end,
dict:fetch_keys(StateData#state.channels)),
case StateData#state.socket of
undefined -> ok;
Socket -> gen_tcp:close(Socket)
end,
ok.
-spec send_stanza(binary(), state(), stanza()) -> ok.
send_stanza(Chan, StateData, Stanza) ->
ejabberd_router:route(
xmpp:set_from_to(
Stanza,
jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host,
StateData#state.nick),
StateData#state.user)).
-spec send_stanza_unavailable(binary(), state()) -> ok.
send_stanza_unavailable(Chan, StateData) ->
Affiliation = member,
Role = none,
Stanza = #presence{
type = unavailable,
sub_els = [#muc_user{
items = [#muc_item{affiliation = Affiliation,
role = Role}],
status_codes = [110]}]},
send_stanza(Chan, StateData, Stanza).
%%%----------------------------------------------------------------------
%%% Internal functions
%%%----------------------------------------------------------------------
send_text(#state{socket = Socket, encoding = Encoding},
Text) ->
CText = iconv:convert(<<"utf-8">>, Encoding, iolist_to_binary(Text)),
gen_tcp:send(Socket, CText).
bounce_messages(Reason) ->
receive
{send_element, El} ->
Lang = xmpp:get_lang(El),
Err = xmpp:err_internal_server_error(Reason, Lang),
ejabberd_router:route_error(El, Err),
bounce_messages(Reason)
after 0 -> ok
end.
route_chan(Pid, Channel, Resource, Packet) ->
Pid ! {route_chan, Channel, Resource, Packet}.
route_nick(Pid, Nick, Packet) ->
Pid ! {route_nick, Nick, Packet}.
process_lines(_Encoding, [S]) -> S;
process_lines(Encoding, [S | Ss]) ->
self() !
{ircstring, iconv:convert(Encoding, <<"utf-8">>, S)},
process_lines(Encoding, Ss).
process_channel_list(StateData, Items) ->
process_channel_list_find_chan(StateData, Items).
process_channel_list_find_chan(StateData, []) ->
StateData;
process_channel_list_find_chan(StateData,
[<<$#, Chan/binary>> | Items]) ->
process_channel_list_users(StateData, Chan, Items);
process_channel_list_find_chan(StateData,
[_ | Items]) ->
process_channel_list_find_chan(StateData, Items).
process_channel_list_users(StateData, _Chan, []) ->
StateData;
process_channel_list_users(StateData, Chan,
[User | Items]) ->
NewStateData = process_channel_list_user(StateData,
Chan, User),
process_channel_list_users(NewStateData, Chan, Items).
process_channel_list_user(StateData, Chan, User) ->
User1 = case User of
<<$:, U1/binary>> -> U1;
_ -> User
end,
{User2, Affiliation, Role} = case User1 of
<<$@, U2/binary>> ->
{U2, admin, moderator};
<<$+, U2/binary>> ->
{U2, member, participant};
<<$%, U2/binary>> ->
{U2, admin, moderator};
<<$&, U2/binary>> ->
{U2, admin, moderator};
<<$~, U2/binary>> ->
{U2, admin, moderator};
_ -> {User1, member, participant}
end,
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, User2),
to = StateData#state.user,
sub_els = [#muc_user{items = [#muc_item{affiliation = Affiliation,
role = Role}]}]}),
case catch dict:update(Chan,
fun (Ps) -> (?SETS):add_element(User2, Ps) end,
StateData#state.channels) of
{'EXIT', _} -> StateData;
NS -> StateData#state{channels = NS}
end.
process_channel_topic(StateData, Chan, String) ->
Msg = ejabberd_regexp:replace(String, <<".*332[^:]*:">>,
<<"">>),
Subject = filter_message(Msg),
Body = <<"Topic for #", Chan/binary, ": ", Subject/binary>>,
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host),
to = StateData#state.user,
type = groupchat,
subject = xmpp:mk_text(Subject),
body = xmpp:mk_text(Body)}).
process_channel_topic_who(StateData, Chan, String) ->
Words = str:tokens(String, <<" ">>),
Msg1 = case Words of
[_, <<"333">>, _, _Chan, Whoset, Timeset] ->
{Unixtimeset, _Rest} = str:to_integer(Timeset),
<<"Topic for #", Chan/binary, " set by ", Whoset/binary,
" at ", (unixtime2string(Unixtimeset))/binary>>;
[_, <<"333">>, _, _Chan, Whoset | _] ->
<<"Topic for #", Chan/binary, " set by ",
Whoset/binary>>;
_ -> String
end,
Msg2 = filter_message(Msg1),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, <<"">>),
to = StateData#state.user,
type = groupchat, body = xmpp:mk_text(Msg2)}).
error_nick_in_use(_StateData, String) ->
Msg = ejabberd_regexp:replace(String,
<<".*433 +[^ ]* +">>, <<"">>),
Msg1 = filter_message(Msg),
xmpp:err_conflict(Msg1, ?MYLANG).
process_nick_in_use(StateData, String) ->
Error = error_nick_in_use(StateData, String),
case StateData#state.nickchannel of
undefined ->
% Shouldn't happen with a well behaved server
StateData;
Chan ->
ejabberd_router:route(
#presence{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host,
StateData#state.nick),
to = StateData#state.user,
type = error, sub_els = [Error]}),
StateData#state{nickchannel = undefined}
end.
process_num_error(StateData, String) ->
Error = error_unknown_num(StateData, String, continue),
lists:foreach(
fun(Chan) ->
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, $%, StateData#state.server]),
StateData#state.host,
StateData#state.nick),
to = StateData#state.user,
type = error, sub_els = [Error]})
end, dict:fetch_keys(StateData#state.channels)),
StateData.
process_endofwhois(StateData, _String, Nick) ->
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Nick, <<"!">>, StateData#state.server]),
StateData#state.host),
to = StateData#state.user,
type = chat, body = xmpp:mk_text(<<"End of WHOIS">>)}).
process_whois311(StateData, String, Nick, Ident,
Irchost) ->
Fullname = ejabberd_regexp:replace(String,
<<".*311[^:]*:">>, <<"">>),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Nick, <<"!">>, StateData#state.server]),
StateData#state.host, <<"">>),
to = StateData#state.user,
type = chat,
body = xmpp:mk_text(
iolist_to_binary(
[<<"WHOIS: ">>, Nick, <<" is ">>, Ident,
<<"@">>, Irchost, <<" : ">>, Fullname]))}).
process_whois312(StateData, String, Nick, Ircserver) ->
Ircserverdesc = ejabberd_regexp:replace(String,
<<".*312[^:]*:">>, <<"">>),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Nick, <<"!">>, StateData#state.server]),
StateData#state.host, <<"">>),
to = StateData#state.user,
type = chat,
body = xmpp:mk_text(
iolist_to_binary(
[<<"WHOIS: ">>, Nick, <<" use ">>, Ircserver,
<<" : ">>, Ircserverdesc]))}).
process_whois319(StateData, String, Nick) ->
Chanlist = ejabberd_regexp:replace(String,
<<".*319[^:]*:">>, <<"">>),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Nick, <<"!">>, StateData#state.server]),
StateData#state.host, <<"">>),
to = StateData#state.user,
type = chat,
body = xmpp:mk_text(
iolist_to_binary(
[<<"WHOIS: ">>, Nick, <<" is on ">>, Chanlist]))}).
process_chanprivmsg(StateData, Chan, From, String) ->
[FromUser | _] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*PRIVMSG[^:]*:">>, <<"">>),
Msg1 = case Msg of
<<1, $A, $C, $T, $I, $O, $N, $\s, Rest/binary>> ->
<<"/me ", Rest/binary>>;
_ -> Msg
end,
Msg2 = filter_message(Msg1),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, FromUser),
to = StateData#state.user,
type = groupchat, body = xmpp:mk_text(Msg2)}).
process_channotice(StateData, Chan, From, String) ->
[FromUser | _] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*NOTICE[^:]*:">>, <<"">>),
Msg1 = case Msg of
<<1, $A, $C, $T, $I, $O, $N, $\s, Rest/binary>> ->
<<"/me ", Rest/binary>>;
_ -> <<"/me NOTICE: ", Msg/binary>>
end,
Msg2 = filter_message(Msg1),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, FromUser),
to = StateData#state.user,
type = groupchat, body = xmpp:mk_text(Msg2)}).
process_privmsg(StateData, _Nick, From, String) ->
[FromUser | _] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*PRIVMSG[^:]*:">>, <<"">>),
Msg1 = case Msg of
<<1, $A, $C, $T, $I, $O, $N, $\s, Rest/binary>> ->
<<"/me ", Rest/binary>>;
_ -> Msg
end,
Msg2 = filter_message(Msg1),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([FromUser, <<"!">>, StateData#state.server]),
StateData#state.host, <<"">>),
to = StateData#state.user,
type = chat, body = xmpp:mk_text(Msg2)}).
process_notice(StateData, _Nick, From, String) ->
[FromUser | _] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*NOTICE[^:]*:">>, <<"">>),
Msg1 = case Msg of
<<1, $A, $C, $T, $I, $O, $N, $\s, Rest/binary>> ->
<<"/me ", Rest/binary>>;
_ -> <<"/me NOTICE: ", Msg/binary>>
end,
Msg2 = filter_message(Msg1),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([FromUser, <<"!">>, StateData#state.server]),
StateData#state.host),
to = StateData#state.user,
type = chat, body = xmpp:mk_text(Msg2)}).
process_version(StateData, _Nick, From) ->
[FromUser | _] = str:tokens(From, <<"!">>),
send_text(StateData,
io_lib:format("NOTICE ~s :\001VERSION ejabberd IRC "
"transport ~s (c) Alexey Shchepin\001\r\n",
[FromUser, ?VERSION])
++
io_lib:format("NOTICE ~s :\001VERSION http://ejabberd.jabber"
"studio.org/\001\r\n",
[FromUser])).
process_userinfo(StateData, _Nick, From) ->
[FromUser | _] = str:tokens(From, <<"!">>),
send_text(StateData,
io_lib:format("NOTICE ~s :\001USERINFO xmpp:~s\001\r\n",
[FromUser,
jid:encode(StateData#state.user)])).
process_topic(StateData, Chan, From, String) ->
[FromUser | _] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*TOPIC[^:]*:">>, <<"">>),
Msg1 = filter_message(Msg),
ejabberd_router:route(
#message{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, FromUser),
to = StateData#state.user,
type = groupchat,
subject = xmpp:mk_text(Msg1),
body = xmpp:mk_text(<<"/me has changed the subject to: ",
Msg1/binary>>)}).
process_part(StateData, Chan, From, String) ->
[FromUser | FromIdent] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*PART[^:]*:">>, <<"">>),
Msg1 = filter_message(Msg),
ejabberd_router:route(
#presence{from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, FromUser),
to = StateData#state.user,
type = unavailable,
sub_els = [#muc_user{
items = [#muc_item{affiliation = member,
role = none}]}],
status = xmpp:mk_text(
list_to_binary([Msg1, " (", FromIdent, ")"]))}),
case catch dict:update(Chan,
fun (Ps) -> remove_element(FromUser, Ps) end,
StateData#state.channels)
of
{'EXIT', _} -> StateData;
NS -> StateData#state{channels = NS}
end.
process_quit(StateData, From, String) ->
[FromUser | FromIdent] = str:tokens(From, <<"!">>),
Msg = ejabberd_regexp:replace(String,
<<".*QUIT[^:]*:">>, <<"">>),
Msg1 = filter_message(Msg),
dict:map(
fun(Chan, Ps) ->
case (?SETS):is_member(FromUser, Ps) of
true ->
ejabberd_router:route(
#presence{from = jid:make(iolist_to_binary([Chan, $%, StateData#state.server]),
StateData#state.host,
FromUser),
to = StateData#state.user,
type = unavailable,
sub_els = [#muc_user{
items = [#muc_item{
affiliation = member,
role = none}]}],
status = xmpp:mk_text(
list_to_binary([Msg1, " (", FromIdent, ")"]))}),
remove_element(FromUser, Ps);
_ ->
Ps
end
end, StateData#state.channels),
StateData.
process_join(StateData, Channel, From, _String) ->
[FromUser | FromIdent] = str:tokens(From, <<"!">>),
[Chan | _] = binary:split(Channel, <<":#">>),
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, FromUser),
to = StateData#state.user,
sub_els = [#muc_user{items = [#muc_item{affiliation = member,
role = participant}]}],
status = xmpp:mk_text(list_to_binary(FromIdent))}),
case catch dict:update(Chan,
fun (Ps) -> (?SETS):add_element(FromUser, Ps) end,
StateData#state.channels)
of
{'EXIT', _} -> StateData;
NS -> StateData#state{channels = NS}
end.
process_mode_o(StateData, Chan, _From, Nick,
Affiliation, Role) ->
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, Nick),
to = StateData#state.user,
sub_els = [#muc_user{items = [#muc_item{affiliation = Affiliation,
role = Role}]}]}).
process_kick(StateData, Chan, From, Nick, String) ->
Msg = lists:last(str:tokens(String, <<":">>)),
Msg2 = <<Nick/binary, " kicked by ", From/binary, " (",
(filter_message(Msg))/binary, ")">>,
ejabberd_router:route(
#message{
from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host),
to = StateData#state.user,
type = groupchat, body = xmpp:mk_text(Msg2)}),
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, <<"%">>, StateData#state.server]),
StateData#state.host, Nick),
to = StateData#state.user,
type = unavailable,
sub_els = [#muc_user{items = [#muc_item{
affiliation = none,
role = none}],
status_codes = [307]}]}).
process_nick(StateData, From, NewNick) ->
[FromUser | _] = str:tokens(From, <<"!">>),
[Nick | _] = binary:split(NewNick, <<":">>),
NewChans =
dict:map(
fun(Chan, Ps) ->
case (?SETS):is_member(FromUser, Ps) of
true ->
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, $%, StateData#state.server]),
StateData#state.host,
FromUser),
to = StateData#state.user,
type = unavailable,
sub_els = [#muc_user{
items = [#muc_item{
affiliation = member,
role = participant,
nick = Nick}],
status_codes = [303]}]}),
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, $%, StateData#state.server]),
StateData#state.host, Nick),
to = StateData#state.user,
sub_els = [#muc_user{
items = [#muc_item{
affiliation = member,
role = participant}]}]}),
(?SETS):add_element(Nick, remove_element(FromUser, Ps));
_ -> Ps
end
end, StateData#state.channels),
if FromUser == StateData#state.nick ->
StateData#state{nick = Nick, nickchannel = undefined,
channels = NewChans};
true -> StateData#state{channels = NewChans}
end.
process_error(StateData, String) ->
lists:foreach(
fun(Chan) ->
ejabberd_router:route(
#presence{
from = jid:make(iolist_to_binary([Chan, $%, StateData#state.server]),
StateData#state.host,
StateData#state.nick),
to = StateData#state.user,
type = error,
sub_els = [xmpp:err_internal_server_error(String, ?MYLANG)]})
end, dict:fetch_keys(StateData#state.channels)).
error_unknown_num(_StateData, String, Type) ->
Msg = ejabberd_regexp:replace(String,
<<".*[45][0-9][0-9] +[^ ]* +">>, <<"">>),
Msg1 = filter_message(Msg),
xmpp:err_undefined_condition(Type, Msg1, ?MYLANG).
remove_element(E, Set) ->
case (?SETS):is_element(E, Set) of
true -> (?SETS):del_element(E, Set);
_ -> Set
end.
iq_admin(StateData, Channel, From, _To,
#iq{type = Type, sub_els = [SubEl]} = IQ) ->
try process_iq_admin(StateData, Channel, Type, SubEl) of
{result, Result} ->
ejabberd_router:route(xmpp:make_iq_result(IQ, Result));
{error, Error} ->
ejabberd_router:route_error(IQ, Error)
catch E:R ->
?ERROR_MSG("failed to process admin query from ~s: ~p",
[jid:encode(From), {E, {R, erlang:get_stacktrace()}}]),
ejabberd_router:route_error(
IQ, xmpp:err_internal_server_error())
end.
process_iq_admin(_StateData, _Channel, set, #muc_admin{items = []}) ->
{error, xmpp:err_bad_request()};
process_iq_admin(StateData, Channel, set, #muc_admin{items = [Item|_]}) ->
process_admin(StateData, Channel, Item);
process_iq_admin(_StateData, _Channel, _, _SubEl) ->
{error, xmpp:err_feature_not_implemented()}.
process_admin(_StateData, _Channel, #muc_item{nick = <<"">>}) ->
{error, xmpp:err_feature_not_implemented()};
process_admin(StateData, Channel, #muc_item{nick = Nick,
reason = Reason,
role = none}) ->
case Reason of
<<"">> ->
send_text(StateData,
io_lib:format("KICK #~s ~s\r\n", [Channel, Nick]));
_ ->
send_text(StateData,
io_lib:format("KICK #~s ~s :~s\r\n",
[Channel, Nick, Reason]))
end,
{result, undefined};
process_admin(_StateData, _Channel, _Item) ->
{error, xmpp:err_feature_not_implemented()}.
filter_message(Msg) ->
list_to_binary(
lists:filter(fun (C) ->
if (C < 32) and (C /= 9) and (C /= 10) and (C /= 13) ->
false;
true -> true
end
end,
binary_to_list(filter_mirc_colors(Msg)))).
filter_mirc_colors(Msg) ->
ejabberd_regexp:greplace(Msg,
<<"(\\003[0-9]+)(,[0-9]+)?">>, <<"">>).
unixtime2string(Unixtime) ->
Secs = Unixtime +
calendar:datetime_to_gregorian_seconds({{1970, 1, 1},
{0, 0, 0}}),
{{Year, Month, Day}, {Hour, Minute, Second}} =
calendar:universal_time_to_local_time(calendar:gregorian_seconds_to_datetime(Secs)),
(str:format("~4..0w-~2..0w-~2..0w ~2..0w:~2..0w:~2..0w",
[Year, Month, Day, Hour, Minute, Second])).
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