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xmpp.chapril.org-ejabberd/src/ejabberd_c2s.erl
Evgeniy Khramtsov 91a74e3e27 Change configuration file format to YAML
2013-08-21 22:17:59 +10:00

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%%%----------------------------------------------------------------------
%%% File : ejabberd_c2s.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Serve C2S connection
%%% Created : 16 Nov 2002 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2013 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., 59 Temple Place, Suite 330, Boston, MA
%%% 02111-1307 USA
%%%
%%%----------------------------------------------------------------------
-module(ejabberd_c2s).
-author('alexey@process-one.net').
-update_info({update, 0}).
-define(GEN_FSM, p1_fsm).
-behaviour(?GEN_FSM).
%% External exports
-export([start/2,
stop/1,
start_link/2,
send_text/2,
send_element/2,
socket_type/0,
get_presence/1,
get_aux_field/2,
set_aux_field/3,
del_aux_field/2,
get_subscription/2,
broadcast/4,
get_subscribed/1,
transform_listen_option/2]).
%% gen_fsm callbacks
-export([init/1,
wait_for_stream/2,
wait_for_auth/2,
wait_for_feature_request/2,
wait_for_bind/2,
wait_for_session/2,
wait_for_sasl_response/2,
session_established/2,
handle_event/3,
handle_sync_event/4,
code_change/4,
handle_info/3,
terminate/3,
print_state/1
]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("jlib.hrl").
-include("mod_privacy.hrl").
-define(SETS, gb_sets).
-define(DICT, dict).
%% pres_a contains all the presence available send (either through roster mechanism or directed).
%% Directed presence unavailable remove user from pres_a.
-record(state, {socket,
sockmod,
socket_monitor,
xml_socket,
streamid,
sasl_state,
access,
shaper,
zlib = false,
tls = false,
tls_required = false,
tls_enabled = false,
tls_options = [],
authenticated = false,
jid,
user = "", server = ?MYNAME, resource = <<"">>,
sid,
pres_t = ?SETS:new(),
pres_f = ?SETS:new(),
pres_a = ?SETS:new(),
pres_i = ?SETS:new(),
pres_last, pres_pri,
pres_timestamp,
pres_invis = false,
privacy_list = #userlist{},
conn = unknown,
auth_module = unknown,
ip,
aux_fields = [],
lang}).
%-define(DBGFSM, true).
-ifdef(DBGFSM).
-define(FSMOPTS, [{debug, [trace]}]).
-else.
-define(FSMOPTS, []).
-endif.
%% Module start with or without supervisor:
-ifdef(NO_TRANSIENT_SUPERVISORS).
-define(SUPERVISOR_START, ?GEN_FSM:start(ejabberd_c2s, [SockData, Opts],
fsm_limit_opts(Opts) ++ ?FSMOPTS)).
-else.
-define(SUPERVISOR_START, supervisor:start_child(ejabberd_c2s_sup,
[SockData, Opts])).
-endif.
%% This is the timeout to apply between event when starting a new
%% session:
-define(C2S_OPEN_TIMEOUT, 60000).
-define(C2S_HIBERNATE_TIMEOUT, 90000).
-define(STREAM_HEADER,
<<"<?xml version='1.0'?><stream:stream "
"xmlns='jabber:client' xmlns:stream='http://et"
"herx.jabber.org/streams' id='~s' from='~s'~s~"
"s>">>).
-define(STREAM_TRAILER, <<"</stream:stream>">>).
-define(INVALID_NS_ERR, ?SERR_INVALID_NAMESPACE).
-define(INVALID_XML_ERR, ?SERR_XML_NOT_WELL_FORMED).
-define(HOST_UNKNOWN_ERR, ?SERR_HOST_UNKNOWN).
-define(POLICY_VIOLATION_ERR(Lang, Text),
?SERRT_POLICY_VIOLATION(Lang, Text)).
-define(INVALID_FROM, ?SERR_INVALID_FROM).
%%%----------------------------------------------------------------------
%%% API
%%%----------------------------------------------------------------------
start(SockData, Opts) ->
?SUPERVISOR_START.
start_link(SockData, Opts) ->
?GEN_FSM:start_link(ejabberd_c2s, [SockData, Opts],
fsm_limit_opts(Opts) ++ ?FSMOPTS).
socket_type() -> xml_stream.
%% Return Username, Resource and presence information
get_presence(FsmRef) ->
(?GEN_FSM):sync_send_all_state_event(FsmRef,
{get_presence}, 1000).
get_aux_field(Key, #state{aux_fields = Opts}) ->
case lists:keysearch(Key, 1, Opts) of
{value, {_, Val}} -> {ok, Val};
_ -> error
end.
set_aux_field(Key, Val,
#state{aux_fields = Opts} = State) ->
Opts1 = lists:keydelete(Key, 1, Opts),
State#state{aux_fields = [{Key, Val} | Opts1]}.
del_aux_field(Key, #state{aux_fields = Opts} = State) ->
Opts1 = lists:keydelete(Key, 1, Opts),
State#state{aux_fields = Opts1}.
get_subscription(From = #jid{}, StateData) ->
get_subscription(jlib:jid_tolower(From), StateData);
get_subscription(LFrom, StateData) ->
LBFrom = setelement(3, LFrom, <<"">>),
F = (?SETS):is_element(LFrom, StateData#state.pres_f)
orelse
(?SETS):is_element(LBFrom, StateData#state.pres_f),
T = (?SETS):is_element(LFrom, StateData#state.pres_t)
orelse
(?SETS):is_element(LBFrom, StateData#state.pres_t),
if F and T -> both;
F -> from;
T -> to;
true -> none
end.
broadcast(FsmRef, Type, From, Packet) ->
FsmRef ! {broadcast, Type, From, Packet}.
stop(FsmRef) -> (?GEN_FSM):send_event(FsmRef, closed).
%%%----------------------------------------------------------------------
%%% Callback functions from gen_fsm
%%%----------------------------------------------------------------------
%%----------------------------------------------------------------------
%% Func: init/1
%% Returns: {ok, StateName, StateData} |
%% {ok, StateName, StateData, Timeout} |
%% ignore |
%% {stop, StopReason}
%%----------------------------------------------------------------------
init([{SockMod, Socket}, Opts]) ->
Access = case lists:keysearch(access, 1, Opts) of
{value, {_, A}} -> A;
_ -> all
end,
Shaper = case lists:keysearch(shaper, 1, Opts) of
{value, {_, S}} -> S;
_ -> none
end,
XMLSocket = case lists:keysearch(xml_socket, 1, Opts) of
{value, {_, XS}} -> XS;
_ -> false
end,
Zlib = proplists:get_bool(zlib, Opts),
StartTLS = proplists:get_bool(starttls, Opts),
StartTLSRequired = proplists:get_bool(starttls_required, Opts),
TLSEnabled = proplists:get_bool(tls, Opts),
TLS = StartTLS orelse
StartTLSRequired orelse TLSEnabled,
TLSOpts1 = lists:filter(fun ({certfile, _}) -> true;
(_) -> false
end,
Opts),
TLSOpts2 = case proplists:get_bool(tls_compression, Opts) of
false -> [compression_none | TLSOpts1];
true -> TLSOpts1
end,
TLSOpts = [verify_none | TLSOpts2],
IP = peerip(SockMod, Socket),
%% Check if IP is blacklisted:
case is_ip_blacklisted(IP) of
true ->
?INFO_MSG("Connection attempt from blacklisted "
"IP: ~s (~w)",
[jlib:ip_to_list(IP), IP]),
{stop, normal};
false ->
Socket1 = if TLSEnabled andalso
SockMod /= ejabberd_frontend_socket ->
SockMod:starttls(Socket, TLSOpts);
true -> Socket
end,
SocketMonitor = SockMod:monitor(Socket1),
StateData = #state{socket = Socket1, sockmod = SockMod,
socket_monitor = SocketMonitor,
xml_socket = XMLSocket, zlib = Zlib, tls = TLS,
tls_required = StartTLSRequired,
tls_enabled = TLSEnabled, tls_options = TLSOpts,
streamid = new_id(), access = Access,
shaper = Shaper, ip = IP},
{ok, wait_for_stream, StateData, ?C2S_OPEN_TIMEOUT}
end.
%% Return list of all available resources of contacts,
get_subscribed(FsmRef) ->
(?GEN_FSM):sync_send_all_state_event(FsmRef,
get_subscribed, 1000).
%%----------------------------------------------------------------------
%% Func: StateName/2
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData}
%%----------------------------------------------------------------------
wait_for_stream({xmlstreamstart, _Name, Attrs}, StateData) ->
DefaultLang = ?MYLANG,
case xml:get_attr_s(<<"xmlns:stream">>, Attrs) of
?NS_STREAM ->
Server = jlib:nameprep(xml:get_attr_s(<<"to">>, Attrs)),
case lists:member(Server, ?MYHOSTS) of
true ->
Lang = case xml:get_attr_s(<<"xml:lang">>, Attrs) of
Lang1 when size(Lang1) =< 35 ->
%% As stated in BCP47, 4.4.1:
%% Protocols or specifications that
%% specify limited buffer sizes for
%% language tags MUST allow for
%% language tags of at least 35 characters.
Lang1;
_ ->
%% Do not store long language tag to
%% avoid possible DoS/flood attacks
<<"">>
end,
change_shaper(StateData, jlib:make_jid(<<"">>, Server, <<"">>)),
case xml:get_attr_s(<<"version">>, Attrs) of
<<"1.0">> ->
send_header(StateData, Server, <<"1.0">>, DefaultLang),
case StateData#state.authenticated of
false ->
SASLState =
cyrsasl:server_new(
<<"jabber">>, Server, <<"">>, [],
fun(U) ->
ejabberd_auth:get_password_with_authmodule(
U, Server)
end,
fun(U, P) ->
ejabberd_auth:check_password_with_authmodule(
U, Server, P)
end,
fun(U, P, D, DG) ->
ejabberd_auth:check_password_with_authmodule(
U, Server, P, D, DG)
end),
Mechs = lists:map(fun (S) ->
#xmlel{name = <<"mechanism">>,
attrs = [],
children = [{xmlcdata, S}]}
end,
cyrsasl:listmech(Server)),
SockMod =
(StateData#state.sockmod):get_sockmod(
StateData#state.socket),
Zlib = StateData#state.zlib,
CompressFeature =
case Zlib andalso
((SockMod == gen_tcp) orelse
(SockMod == p1_tls)) of
true ->
[#xmlel{name = <<"compression">>,
attrs = [{<<"xmlns">>, ?NS_FEATURE_COMPRESS}],
children = [#xmlel{name = <<"method">>,
attrs = [],
children = [{xmlcdata, <<"zlib">>}]}]}];
_ ->
[]
end,
TLS = StateData#state.tls,
TLSEnabled = StateData#state.tls_enabled,
TLSRequired = StateData#state.tls_required,
TLSFeature =
case (TLS == true) andalso
(TLSEnabled == false) andalso
(SockMod == gen_tcp) of
true ->
case TLSRequired of
true ->
[#xmlel{name = <<"starttls">>,
attrs = [{<<"xmlns">>, ?NS_TLS}],
children = [#xmlel{name = <<"required">>,
attrs = [],
children = []}]}];
_ ->
[#xmlel{name = <<"starttls">>,
attrs = [{<<"xmlns">>, ?NS_TLS}],
children = []}]
end;
false ->
[]
end,
send_element(StateData,
#xmlel{name = <<"stream:features">>,
attrs = [],
children =
TLSFeature ++ CompressFeature ++
[#xmlel{name = <<"mechanisms">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children = Mechs}]
++
ejabberd_hooks:run_fold(c2s_stream_features,
Server, [], [Server])}),
fsm_next_state(wait_for_feature_request,
StateData#state{
server = Server,
sasl_state = SASLState,
lang = Lang});
_ ->
case StateData#state.resource of
<<"">> ->
RosterVersioningFeature =
ejabberd_hooks:run_fold(roster_get_versioning_feature,
Server, [],
[Server]),
StreamFeatures = [#xmlel{name = <<"bind">>,
attrs = [{<<"xmlns">>, ?NS_BIND}],
children = []},
#xmlel{name = <<"session">>,
attrs = [{<<"xmlns">>, ?NS_SESSION}],
children = []}]
++
RosterVersioningFeature ++
ejabberd_hooks:run_fold(c2s_stream_features,
Server, [], [Server]),
send_element(StateData,
#xmlel{name = <<"stream:features">>,
attrs = [],
children = StreamFeatures}),
fsm_next_state(wait_for_bind,
StateData#state{server = Server, lang = Lang});
_ ->
send_element(StateData,
#xmlel{name = <<"stream:features">>,
attrs = [],
children = []}),
fsm_next_state(wait_for_session,
StateData#state{server = Server, lang = Lang})
end
end;
_ ->
send_header(StateData, Server, <<"">>, DefaultLang),
if not StateData#state.tls_enabled and
StateData#state.tls_required ->
send_element(StateData,
?POLICY_VIOLATION_ERR(Lang,
<<"Use of STARTTLS required">>)),
send_trailer(StateData),
{stop, normal, StateData};
true ->
fsm_next_state(wait_for_auth,
StateData#state{server = Server,
lang = Lang})
end
end;
_ ->
send_header(StateData, ?MYNAME, <<"">>, DefaultLang),
send_element(StateData, ?HOST_UNKNOWN_ERR),
send_trailer(StateData),
{stop, normal, StateData}
end;
_ ->
send_header(StateData, ?MYNAME, <<"">>, DefaultLang),
send_element(StateData, ?INVALID_NS_ERR),
send_trailer(StateData),
{stop, normal, StateData}
end;
wait_for_stream(timeout, StateData) ->
{stop, normal, StateData};
wait_for_stream({xmlstreamelement, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_stream({xmlstreamend, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_stream({xmlstreamerror, _}, StateData) ->
send_header(StateData, ?MYNAME, <<"1.0">>, <<"">>),
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_stream(closed, StateData) ->
{stop, normal, StateData}.
wait_for_auth({xmlstreamelement, El}, StateData) ->
case is_auth_packet(El) of
{auth, _ID, get, {U, _, _, _}} ->
#xmlel{name = Name, attrs = Attrs} =
jlib:make_result_iq_reply(El),
case U of
<<"">> -> UCdata = [];
_ -> UCdata = [{xmlcdata, U}]
end,
Res = case
ejabberd_auth:plain_password_required(StateData#state.server)
of
false ->
#xmlel{name = Name, attrs = Attrs,
children =
[#xmlel{name = <<"query">>,
attrs = [{<<"xmlns">>, ?NS_AUTH}],
children =
[#xmlel{name = <<"username">>,
attrs = [],
children = UCdata},
#xmlel{name = <<"password">>,
attrs = [], children = []},
#xmlel{name = <<"digest">>,
attrs = [], children = []},
#xmlel{name = <<"resource">>,
attrs = [],
children = []}]}]};
true ->
#xmlel{name = Name, attrs = Attrs,
children =
[#xmlel{name = <<"query">>,
attrs = [{<<"xmlns">>, ?NS_AUTH}],
children =
[#xmlel{name = <<"username">>,
attrs = [],
children = UCdata},
#xmlel{name = <<"password">>,
attrs = [], children = []},
#xmlel{name = <<"resource">>,
attrs = [],
children = []}]}]}
end,
send_element(StateData, Res),
fsm_next_state(wait_for_auth, StateData);
{auth, _ID, set, {_U, _P, _D, <<"">>}} ->
Err = jlib:make_error_reply(El,
?ERR_AUTH_NO_RESOURCE_PROVIDED((StateData#state.lang))),
send_element(StateData, Err),
fsm_next_state(wait_for_auth, StateData);
{auth, _ID, set, {U, P, D, R}} ->
JID = jlib:make_jid(U, StateData#state.server, R),
case JID /= error andalso
acl:match_rule(StateData#state.server,
StateData#state.access, JID)
== allow
of
true ->
DGen = fun (PW) ->
p1_sha:sha(<<(StateData#state.streamid)/binary, PW/binary>>)
end,
case ejabberd_auth:check_password_with_authmodule(U,
StateData#state.server,
P, D, DGen)
of
{true, AuthModule} ->
?INFO_MSG("(~w) Accepted legacy authentication for ~s by ~p",
[StateData#state.socket,
jlib:jid_to_string(JID), AuthModule]),
SID = {now(), self()},
Conn = (StateData#state.sockmod):get_conn_type(
StateData#state.socket),
Info = [{ip, StateData#state.ip}, {conn, Conn},
{auth_module, AuthModule}],
Res = jlib:make_result_iq_reply(
El#xmlel{children = []}),
send_element(StateData, Res),
ejabberd_sm:open_session(SID, U, StateData#state.server, R, Info),
change_shaper(StateData, JID),
{Fs, Ts} =
ejabberd_hooks:run_fold(roster_get_subscription_lists,
StateData#state.server,
{[], []},
[U,
StateData#state.server]),
LJID =
jlib:jid_tolower(jlib:jid_remove_resource(JID)),
Fs1 = [LJID | Fs],
Ts1 = [LJID | Ts],
PrivList = ejabberd_hooks:run_fold(privacy_get_user_list,
StateData#state.server,
#userlist{},
[U, StateData#state.server]),
NewStateData = StateData#state{user = U,
resource = R,
jid = JID, sid = SID,
conn = Conn,
auth_module = AuthModule,
pres_f = (?SETS):from_list(Fs1),
pres_t = (?SETS):from_list(Ts1),
privacy_list = PrivList},
fsm_next_state(session_established, NewStateData);
_ ->
IP = peerip(StateData#state.sockmod,
StateData#state.socket),
?INFO_MSG("(~w) Failed legacy authentication for "
"~s from IP ~s",
[StateData#state.socket,
jlib:jid_to_string(JID), jlib:ip_to_list(IP)]),
Err = jlib:make_error_reply(El, ?ERR_NOT_AUTHORIZED),
send_element(StateData, Err),
fsm_next_state(wait_for_auth, StateData)
end;
_ ->
if JID == error ->
?INFO_MSG("(~w) Forbidden legacy authentication "
"for username '~s' with resource '~s'",
[StateData#state.socket, U, R]),
Err = jlib:make_error_reply(El, ?ERR_JID_MALFORMED),
send_element(StateData, Err),
fsm_next_state(wait_for_auth, StateData);
true ->
?INFO_MSG("(~w) Forbidden legacy authentication "
"for ~s",
[StateData#state.socket,
jlib:jid_to_string(JID)]),
Err = jlib:make_error_reply(El, ?ERR_NOT_ALLOWED),
send_element(StateData, Err),
fsm_next_state(wait_for_auth, StateData)
end
end;
_ ->
process_unauthenticated_stanza(StateData, El),
fsm_next_state(wait_for_auth, StateData)
end;
wait_for_auth(timeout, StateData) ->
{stop, normal, StateData};
wait_for_auth({xmlstreamend, _Name}, StateData) ->
send_trailer(StateData), {stop, normal, StateData};
wait_for_auth({xmlstreamerror, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_auth(closed, StateData) ->
{stop, normal, StateData}.
wait_for_feature_request({xmlstreamelement, El},
StateData) ->
#xmlel{name = Name, attrs = Attrs, children = Els} = El,
Zlib = StateData#state.zlib,
TLS = StateData#state.tls,
TLSEnabled = StateData#state.tls_enabled,
TLSRequired = StateData#state.tls_required,
SockMod =
(StateData#state.sockmod):get_sockmod(StateData#state.socket),
case {xml:get_attr_s(<<"xmlns">>, Attrs), Name} of
{?NS_SASL, <<"auth">>}
when not ((SockMod == gen_tcp) and TLSRequired) ->
Mech = xml:get_attr_s(<<"mechanism">>, Attrs),
ClientIn = jlib:decode_base64(xml:get_cdata(Els)),
case cyrsasl:server_start(StateData#state.sasl_state,
Mech, ClientIn)
of
{ok, Props} ->
(StateData#state.sockmod):reset_stream(StateData#state.socket),
%U = xml:get_attr_s(username, Props),
U = proplists:get_value(username, Props, <<>>),
%AuthModule = xml:get_attr_s(auth_module, Props),
AuthModule = proplists:get_value(auth_module, Props, undefined),
?INFO_MSG("(~w) Accepted authentication for ~s "
"by ~p",
[StateData#state.socket, U, AuthModule]),
send_element(StateData,
#xmlel{name = <<"success">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children = []}),
fsm_next_state(wait_for_stream,
StateData#state{streamid = new_id(),
authenticated = true,
auth_module = AuthModule,
user = U});
{continue, ServerOut, NewSASLState} ->
send_element(StateData,
#xmlel{name = <<"challenge">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[{xmlcdata,
jlib:encode_base64(ServerOut)}]}),
fsm_next_state(wait_for_sasl_response,
StateData#state{sasl_state = NewSASLState});
{error, Error, Username} ->
IP = peerip(StateData#state.sockmod, StateData#state.socket),
?INFO_MSG("(~w) Failed authentication for ~s@~s from IP ~s",
[StateData#state.socket,
Username, StateData#state.server, jlib:ip_to_list(IP)]),
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[#xmlel{name = Error, attrs = [],
children = []}]}),
{next_state, wait_for_feature_request, StateData,
?C2S_OPEN_TIMEOUT};
{error, Error} ->
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[#xmlel{name = Error, attrs = [],
children = []}]}),
fsm_next_state(wait_for_feature_request, StateData)
end;
{?NS_TLS, <<"starttls">>}
when TLS == true, TLSEnabled == false,
SockMod == gen_tcp ->
TLSOpts = case
ejabberd_config:get_option(
{domain_certfile, StateData#state.server},
fun iolist_to_binary/1)
of
undefined -> StateData#state.tls_options;
CertFile ->
[{certfile, CertFile} | lists:keydelete(certfile, 1,
StateData#state.tls_options)]
end,
Socket = StateData#state.socket,
TLSSocket = (StateData#state.sockmod):starttls(Socket,
TLSOpts,
xml:element_to_binary(#xmlel{name
=
<<"proceed">>,
attrs
=
[{<<"xmlns">>,
?NS_TLS}],
children
=
[]})),
fsm_next_state(wait_for_stream,
StateData#state{socket = TLSSocket,
streamid = new_id(),
tls_enabled = true});
{?NS_COMPRESS, <<"compress">>}
when Zlib == true,
(SockMod == gen_tcp) or (SockMod == p1_tls) ->
case xml:get_subtag(El, <<"method">>) of
false ->
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_COMPRESS}],
children =
[#xmlel{name = <<"setup-failed">>,
attrs = [], children = []}]}),
fsm_next_state(wait_for_feature_request, StateData);
Method ->
case xml:get_tag_cdata(Method) of
<<"zlib">> ->
Socket = StateData#state.socket,
ZlibSocket = (StateData#state.sockmod):compress(Socket,
xml:element_to_binary(#xmlel{name
=
<<"compressed">>,
attrs
=
[{<<"xmlns">>,
?NS_COMPRESS}],
children
=
[]})),
fsm_next_state(wait_for_stream,
StateData#state{socket = ZlibSocket,
streamid = new_id()});
_ ->
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_COMPRESS}],
children =
[#xmlel{name =
<<"unsupported-method">>,
attrs = [],
children = []}]}),
fsm_next_state(wait_for_feature_request, StateData)
end
end;
_ ->
if (SockMod == gen_tcp) and TLSRequired ->
Lang = StateData#state.lang,
send_element(StateData,
?POLICY_VIOLATION_ERR(Lang,
<<"Use of STARTTLS required">>)),
send_trailer(StateData),
{stop, normal, StateData};
true ->
process_unauthenticated_stanza(StateData, El),
fsm_next_state(wait_for_feature_request, StateData)
end
end;
wait_for_feature_request(timeout, StateData) ->
{stop, normal, StateData};
wait_for_feature_request({xmlstreamend, _Name},
StateData) ->
send_trailer(StateData), {stop, normal, StateData};
wait_for_feature_request({xmlstreamerror, _},
StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_feature_request(closed, StateData) ->
{stop, normal, StateData}.
wait_for_sasl_response({xmlstreamelement, El},
StateData) ->
#xmlel{name = Name, attrs = Attrs, children = Els} = El,
case {xml:get_attr_s(<<"xmlns">>, Attrs), Name} of
{?NS_SASL, <<"response">>} ->
ClientIn = jlib:decode_base64(xml:get_cdata(Els)),
case cyrsasl:server_step(StateData#state.sasl_state,
ClientIn)
of
{ok, Props} ->
catch
(StateData#state.sockmod):reset_stream(StateData#state.socket),
% U = xml:get_attr_s(username, Props),
U = proplists:get_value(username, Props, <<>>),
% AuthModule = xml:get_attr_s(auth_module, Props),
AuthModule = proplists:get_value(auth_module, Props, <<>>),
?INFO_MSG("(~w) Accepted authentication for ~s "
"by ~p",
[StateData#state.socket, U, AuthModule]),
send_element(StateData,
#xmlel{name = <<"success">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children = []}),
fsm_next_state(wait_for_stream,
StateData#state{streamid = new_id(),
authenticated = true,
auth_module = AuthModule,
user = U});
{ok, Props, ServerOut} ->
(StateData#state.sockmod):reset_stream(StateData#state.socket),
% U = xml:get_attr_s(username, Props),
U = proplists:get_value(username, Props, <<>>),
% AuthModule = xml:get_attr_s(auth_module, Props),
AuthModule = proplists:get_value(auth_module, Props, undefined),
?INFO_MSG("(~w) Accepted authentication for ~s "
"by ~p",
[StateData#state.socket, U, AuthModule]),
send_element(StateData,
#xmlel{name = <<"success">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[{xmlcdata,
jlib:encode_base64(ServerOut)}]}),
fsm_next_state(wait_for_stream,
StateData#state{streamid = new_id(),
authenticated = true,
auth_module = AuthModule,
user = U});
{continue, ServerOut, NewSASLState} ->
send_element(StateData,
#xmlel{name = <<"challenge">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[{xmlcdata,
jlib:encode_base64(ServerOut)}]}),
fsm_next_state(wait_for_sasl_response,
StateData#state{sasl_state = NewSASLState});
{error, Error, Username} ->
IP = peerip(StateData#state.sockmod, StateData#state.socket),
?INFO_MSG("(~w) Failed authentication for ~s@~s from IP ~s",
[StateData#state.socket,
Username, StateData#state.server, jlib:ip_to_list(IP)]),
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[#xmlel{name = Error, attrs = [],
children = []}]}),
fsm_next_state(wait_for_feature_request, StateData);
{error, Error} ->
send_element(StateData,
#xmlel{name = <<"failure">>,
attrs = [{<<"xmlns">>, ?NS_SASL}],
children =
[#xmlel{name = Error, attrs = [],
children = []}]}),
fsm_next_state(wait_for_feature_request, StateData)
end;
_ ->
process_unauthenticated_stanza(StateData, El),
fsm_next_state(wait_for_feature_request, StateData)
end;
wait_for_sasl_response(timeout, StateData) ->
{stop, normal, StateData};
wait_for_sasl_response({xmlstreamend, _Name},
StateData) ->
send_trailer(StateData), {stop, normal, StateData};
wait_for_sasl_response({xmlstreamerror, _},
StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_sasl_response(closed, StateData) ->
{stop, normal, StateData}.
resource_conflict_action(U, S, R) ->
OptionRaw = case ejabberd_sm:is_existing_resource(U, S,
R)
of
true ->
ejabberd_config:get_option(
{resource_conflict, S},
fun(setresource) -> setresource;
(closeold) -> closeold;
(closenew) -> closenew;
(acceptnew) -> acceptnew
end);
false ->
acceptnew
end,
Option = case OptionRaw of
setresource -> setresource;
closeold ->
acceptnew; %% ejabberd_sm will close old session
closenew -> closenew;
acceptnew -> acceptnew;
_ -> acceptnew %% default ejabberd behavior
end,
case Option of
acceptnew -> {accept_resource, R};
closenew -> closenew;
setresource ->
Rnew = iolist_to_binary([randoms:get_string()
| [jlib:integer_to_binary(X)
|| X <- tuple_to_list(now())]]),
{accept_resource, Rnew}
end.
wait_for_bind({xmlstreamelement, El}, StateData) ->
case jlib:iq_query_info(El) of
#iq{type = set, xmlns = ?NS_BIND, sub_el = SubEl} =
IQ ->
U = StateData#state.user,
R1 = xml:get_path_s(SubEl,
[{elem, <<"resource">>}, cdata]),
R = case jlib:resourceprep(R1) of
error -> error;
<<"">> ->
iolist_to_binary([randoms:get_string()
| [jlib:integer_to_binary(X)
|| X <- tuple_to_list(now())]]);
Resource -> Resource
end,
case R of
error ->
Err = jlib:make_error_reply(El, ?ERR_BAD_REQUEST),
send_element(StateData, Err),
fsm_next_state(wait_for_bind, StateData);
_ ->
case resource_conflict_action(U, StateData#state.server,
R)
of
closenew ->
Err = jlib:make_error_reply(El,
?STANZA_ERROR(<<"409">>,
<<"modify">>,
<<"conflict">>)),
send_element(StateData, Err),
fsm_next_state(wait_for_bind, StateData);
{accept_resource, R2} ->
JID = jlib:make_jid(U, StateData#state.server, R2),
Res = IQ#iq{type = result,
sub_el =
[#xmlel{name = <<"bind">>,
attrs = [{<<"xmlns">>, ?NS_BIND}],
children =
[#xmlel{name = <<"jid">>,
attrs = [],
children =
[{xmlcdata,
jlib:jid_to_string(JID)}]}]}]},
send_element(StateData, jlib:iq_to_xml(Res)),
fsm_next_state(wait_for_session,
StateData#state{resource = R2, jid = JID})
end
end;
_ -> fsm_next_state(wait_for_bind, StateData)
end;
wait_for_bind(timeout, StateData) ->
{stop, normal, StateData};
wait_for_bind({xmlstreamend, _Name}, StateData) ->
send_trailer(StateData), {stop, normal, StateData};
wait_for_bind({xmlstreamerror, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_bind(closed, StateData) ->
{stop, normal, StateData}.
wait_for_session({xmlstreamelement, El}, StateData) ->
case jlib:iq_query_info(El) of
#iq{type = set, xmlns = ?NS_SESSION} ->
U = StateData#state.user,
R = StateData#state.resource,
JID = StateData#state.jid,
case acl:match_rule(StateData#state.server,
StateData#state.access, JID) of
allow ->
?INFO_MSG("(~w) Opened session for ~s",
[StateData#state.socket,
jlib:jid_to_string(JID)]),
Res = jlib:make_result_iq_reply(El#xmlel{children = []}),
send_element(StateData, Res),
change_shaper(StateData, JID),
{Fs, Ts} = ejabberd_hooks:run_fold(
roster_get_subscription_lists,
StateData#state.server,
{[], []},
[U, StateData#state.server]),
LJID = jlib:jid_tolower(jlib:jid_remove_resource(JID)),
Fs1 = [LJID | Fs],
Ts1 = [LJID | Ts],
PrivList =
ejabberd_hooks:run_fold(
privacy_get_user_list, StateData#state.server,
#userlist{},
[U, StateData#state.server]),
SID = {now(), self()},
Conn = get_conn_type(StateData),
Info = [{ip, StateData#state.ip}, {conn, Conn},
{auth_module, StateData#state.auth_module}],
ejabberd_sm:open_session(
SID, U, StateData#state.server, R, Info),
NewStateData =
StateData#state{
sid = SID,
conn = Conn,
pres_f = ?SETS:from_list(Fs1),
pres_t = ?SETS:from_list(Ts1),
privacy_list = PrivList},
fsm_next_state_pack(session_established,
NewStateData);
_ ->
ejabberd_hooks:run(forbidden_session_hook,
StateData#state.server, [JID]),
?INFO_MSG("(~w) Forbidden session for ~s",
[StateData#state.socket,
jlib:jid_to_string(JID)]),
Err = jlib:make_error_reply(El, ?ERR_NOT_ALLOWED),
send_element(StateData, Err),
fsm_next_state(wait_for_session, StateData)
end;
_ ->
fsm_next_state(wait_for_session, StateData)
end;
wait_for_session(timeout, StateData) ->
{stop, normal, StateData};
wait_for_session({xmlstreamend, _Name}, StateData) ->
send_trailer(StateData), {stop, normal, StateData};
wait_for_session({xmlstreamerror, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
wait_for_session(closed, StateData) ->
{stop, normal, StateData}.
session_established({xmlstreamelement, El},
StateData) ->
FromJID = StateData#state.jid,
case check_from(El, FromJID) of
'invalid-from' ->
send_element(StateData, ?INVALID_FROM),
send_trailer(StateData),
{stop, normal, StateData};
_NewEl ->
session_established2(El, StateData)
end;
%% We hibernate the process to reduce memory consumption after a
%% configurable activity timeout
session_established(timeout, StateData) ->
Options = [],
proc_lib:hibernate(?GEN_FSM, enter_loop,
[?MODULE, Options, session_established, StateData]),
fsm_next_state(session_established, StateData);
session_established({xmlstreamend, _Name}, StateData) ->
send_trailer(StateData), {stop, normal, StateData};
session_established({xmlstreamerror,
<<"XML stanza is too big">> = E},
StateData) ->
send_element(StateData,
?POLICY_VIOLATION_ERR((StateData#state.lang), E)),
send_trailer(StateData),
{stop, normal, StateData};
session_established({xmlstreamerror, _}, StateData) ->
send_element(StateData, ?INVALID_XML_ERR),
send_trailer(StateData),
{stop, normal, StateData};
session_established(closed, StateData) ->
{stop, normal, StateData}.
%% Process packets sent by user (coming from user on c2s XMPP
%% connection)
session_established2(El, StateData) ->
#xmlel{name = Name, attrs = Attrs} = El,
User = StateData#state.user,
Server = StateData#state.server,
FromJID = StateData#state.jid,
To = xml:get_attr_s(<<"to">>, Attrs),
ToJID = case To of
<<"">> -> jlib:make_jid(User, Server, <<"">>);
_ -> jlib:string_to_jid(To)
end,
NewEl1 = jlib:remove_attr(<<"xmlns">>, El),
NewEl = case xml:get_attr_s(<<"xml:lang">>, Attrs) of
<<"">> ->
case StateData#state.lang of
<<"">> -> NewEl1;
Lang ->
xml:replace_tag_attr(<<"xml:lang">>, Lang, NewEl1)
end;
_ -> NewEl1
end,
NewState = case ToJID of
error ->
case xml:get_attr_s(<<"type">>, Attrs) of
<<"error">> -> StateData;
<<"result">> -> StateData;
_ ->
Err = jlib:make_error_reply(NewEl,
?ERR_JID_MALFORMED),
send_element(StateData, Err),
StateData
end;
_ ->
case Name of
<<"presence">> ->
PresenceEl =
ejabberd_hooks:run_fold(c2s_update_presence,
Server, NewEl,
[User, Server]),
ejabberd_hooks:run(user_send_packet, Server,
[FromJID, ToJID, PresenceEl]),
case ToJID of
#jid{user = User, server = Server,
resource = <<"">>} ->
?DEBUG("presence_update(~p,~n\t~p,~n\t~p)",
[FromJID, PresenceEl, StateData]),
presence_update(FromJID, PresenceEl,
StateData);
_ ->
presence_track(FromJID, ToJID, PresenceEl,
StateData)
end;
<<"iq">> ->
case jlib:iq_query_info(NewEl) of
#iq{xmlns = Xmlns} = IQ
when Xmlns == (?NS_PRIVACY);
Xmlns == (?NS_BLOCKING) ->
process_privacy_iq(FromJID, ToJID, IQ,
StateData);
_ ->
ejabberd_hooks:run(user_send_packet, Server,
[FromJID, ToJID, NewEl]),
check_privacy_route(FromJID, StateData,
FromJID, ToJID, NewEl),
StateData
end;
<<"message">> ->
ejabberd_hooks:run(user_send_packet, Server,
[FromJID, ToJID, NewEl]),
check_privacy_route(FromJID, StateData, FromJID,
ToJID, NewEl),
StateData;
_ -> StateData
end
end,
ejabberd_hooks:run(c2s_loop_debug,
[{xmlstreamelement, El}]),
fsm_next_state(session_established, NewState).
%%----------------------------------------------------------------------
%% 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) ->
fsm_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({get_presence}, _From, StateName,
StateData) ->
User = StateData#state.user,
PresLast = StateData#state.pres_last,
Show = get_showtag(PresLast),
Status = get_statustag(PresLast),
Resource = StateData#state.resource,
Reply = {User, Resource, Show, Status},
fsm_reply(Reply, StateName, StateData);
handle_sync_event(get_subscribed, _From, StateName,
StateData) ->
Subscribed = (?SETS):to_list(StateData#state.pres_f),
{reply, Subscribed, StateName, StateData};
handle_sync_event(_Event, _From, StateName,
StateData) ->
Reply = ok, fsm_reply(Reply, StateName, StateData).
code_change(_OldVsn, StateName, StateData, _Extra) ->
{ok, StateName, StateData}.
%%----------------------------------------------------------------------
%% Func: handle_info/3
%% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData}
%%----------------------------------------------------------------------
handle_info({send_text, Text}, StateName, StateData) ->
send_text(StateData, Text),
ejabberd_hooks:run(c2s_loop_debug, [Text]),
fsm_next_state(StateName, StateData);
handle_info(replaced, _StateName, StateData) ->
Lang = StateData#state.lang,
send_element(StateData,
?SERRT_CONFLICT(Lang,
<<"Replaced by new connection">>)),
send_trailer(StateData),
{stop, normal,
StateData#state{authenticated = replaced}};
handle_info({route, _From, _To, {broadcast, Data}},
StateName, StateData) ->
?DEBUG("broadcast~n~p~n", [Data]),
case Data of
{item, IJID, ISubscription} ->
fsm_next_state(StateName,
roster_change(IJID, ISubscription, StateData));
{exit, Reason} ->
Lang = StateData#state.lang,
send_element(StateData, ?SERRT_CONFLICT(Lang, Reason)),
catch send_trailer(StateData),
{stop, normal, StateData};
{privacy_list, PrivList, PrivListName} ->
case ejabberd_hooks:run_fold(privacy_updated_list,
StateData#state.server,
false,
[StateData#state.privacy_list,
PrivList]) of
false ->
fsm_next_state(StateName, StateData);
NewPL ->
PrivPushIQ = #iq{type = set,
xmlns = ?NS_PRIVACY,
id = <<"push",
(randoms:get_string())/binary>>,
sub_el =
[#xmlel{name = <<"query">>,
attrs = [{<<"xmlns">>,
?NS_PRIVACY}],
children =
[#xmlel{name = <<"list">>,
attrs = [{<<"name">>,
PrivListName}],
children = []}]}]},
PrivPushEl = jlib:replace_from_to(
jlib:jid_remove_resource(StateData#state.jid),
StateData#state.jid,
jlib:iq_to_xml(PrivPushIQ)),
send_element(StateData, PrivPushEl),
fsm_next_state(StateName,
StateData#state{privacy_list = NewPL})
end;
{blocking, What} ->
route_blocking(What, StateData),
fsm_next_state(StateName, StateData);
_ ->
fsm_next_state(StateName, StateData)
end;
%% Process Packets that are to be send to the user
handle_info({route, From, To,
#xmlel{name = Name, attrs = Attrs, children = Els} = Packet},
StateName, StateData) ->
{Pass, NewAttrs, NewState} = case Name of
<<"presence">> ->
State =
ejabberd_hooks:run_fold(c2s_presence_in,
StateData#state.server,
StateData,
[{From, To,
Packet}]),
case xml:get_attr_s(<<"type">>, Attrs) of
<<"probe">> ->
LFrom = jlib:jid_tolower(From),
LBFrom =
jlib:jid_remove_resource(LFrom),
NewStateData = case
(?SETS):is_element(LFrom,
State#state.pres_a)
orelse
(?SETS):is_element(LBFrom,
State#state.pres_a)
of
true -> State;
false ->
case
(?SETS):is_element(LFrom,
State#state.pres_f)
of
true ->
A =
(?SETS):add_element(LFrom,
State#state.pres_a),
State#state{pres_a
=
A};
false ->
case
(?SETS):is_element(LBFrom,
State#state.pres_f)
of
true ->
A =
(?SETS):add_element(LBFrom,
State#state.pres_a),
State#state{pres_a
=
A};
false ->
State
end
end
end,
process_presence_probe(From, To,
NewStateData),
{false, Attrs, NewStateData};
<<"error">> ->
NewA =
remove_element(jlib:jid_tolower(From),
State#state.pres_a),
{true, Attrs,
State#state{pres_a = NewA}};
<<"subscribe">> ->
SRes = is_privacy_allow(State,
From, To,
Packet,
in),
{SRes, Attrs, State};
<<"subscribed">> ->
SRes = is_privacy_allow(State,
From, To,
Packet,
in),
{SRes, Attrs, State};
<<"unsubscribe">> ->
SRes = is_privacy_allow(State,
From, To,
Packet,
in),
{SRes, Attrs, State};
<<"unsubscribed">> ->
SRes = is_privacy_allow(State,
From, To,
Packet,
in),
{SRes, Attrs, State};
_ ->
case privacy_check_packet(State,
From, To,
Packet,
in)
of
allow ->
LFrom =
jlib:jid_tolower(From),
LBFrom =
jlib:jid_remove_resource(LFrom),
case
(?SETS):is_element(LFrom,
State#state.pres_a)
orelse
(?SETS):is_element(LBFrom,
State#state.pres_a)
of
true ->
{true, Attrs, State};
false ->
case
(?SETS):is_element(LFrom,
State#state.pres_f)
of
true ->
A =
(?SETS):add_element(LFrom,
State#state.pres_a),
{true, Attrs,
State#state{pres_a
=
A}};
false ->
case
(?SETS):is_element(LBFrom,
State#state.pres_f)
of
true ->
A =
(?SETS):add_element(LBFrom,
State#state.pres_a),
{true,
Attrs,
State#state{pres_a
=
A}};
false ->
{true,
Attrs,
State}
end
end
end;
deny -> {false, Attrs, State}
end
end;
<<"iq">> ->
IQ = jlib:iq_query_info(Packet),
case IQ of
#iq{xmlns = ?NS_LAST} ->
LFrom = jlib:jid_tolower(From),
LBFrom =
jlib:jid_remove_resource(LFrom),
HasFromSub =
((?SETS):is_element(LFrom,
StateData#state.pres_f)
orelse
(?SETS):is_element(LBFrom,
StateData#state.pres_f))
andalso
is_privacy_allow(StateData,
To, From,
#xmlel{name
=
<<"presence">>,
attrs
=
[],
children
=
[]},
out),
case HasFromSub of
true ->
case
privacy_check_packet(StateData,
From,
To,
Packet,
in)
of
allow ->
{true, Attrs,
StateData};
deny ->
{false, Attrs,
StateData}
end;
_ ->
Err =
jlib:make_error_reply(Packet,
?ERR_FORBIDDEN),
ejabberd_router:route(To,
From,
Err),
{false, Attrs, StateData}
end;
IQ
when is_record(IQ, iq) or
(IQ == reply) ->
case
privacy_check_packet(StateData,
From, To,
Packet, in)
of
allow ->
{true, Attrs, StateData};
deny when is_record(IQ, iq) ->
Err =
jlib:make_error_reply(Packet,
?ERR_SERVICE_UNAVAILABLE),
ejabberd_router:route(To,
From,
Err),
{false, Attrs, StateData};
deny when IQ == reply ->
{false, Attrs, StateData}
end;
IQ
when (IQ == invalid) or
(IQ == not_iq) ->
{false, Attrs, StateData}
end;
<<"message">> ->
case privacy_check_packet(StateData,
From, To,
Packet, in)
of
allow -> {true, Attrs, StateData};
deny -> {false, Attrs, StateData}
end;
_ -> {true, Attrs, StateData}
end,
if Pass == exit ->
%% When Pass==exit, NewState contains a string instead of a #state{}
Lang = StateData#state.lang,
send_element(StateData, ?SERRT_CONFLICT(Lang, NewState)),
send_trailer(StateData),
{stop, normal, StateData};
Pass ->
Attrs2 =
jlib:replace_from_to_attrs(jlib:jid_to_string(From),
jlib:jid_to_string(To), NewAttrs),
FixedPacket = #xmlel{name = Name, attrs = Attrs2, children = Els},
send_element(StateData, FixedPacket),
ejabberd_hooks:run(user_receive_packet,
StateData#state.server,
[StateData#state.jid, From, To, FixedPacket]),
ejabberd_hooks:run(c2s_loop_debug, [{route, From, To, Packet}]),
fsm_next_state(StateName, NewState);
true ->
ejabberd_hooks:run(c2s_loop_debug, [{route, From, To, Packet}]),
fsm_next_state(StateName, NewState)
end;
handle_info({'DOWN', Monitor, _Type, _Object, _Info},
_StateName, StateData)
when Monitor == StateData#state.socket_monitor ->
{stop, normal, StateData};
handle_info(system_shutdown, StateName, StateData) ->
case StateName of
wait_for_stream ->
send_header(StateData, ?MYNAME, <<"1.0">>, <<"en">>),
send_element(StateData, ?SERR_SYSTEM_SHUTDOWN),
send_trailer(StateData),
ok;
_ ->
send_element(StateData, ?SERR_SYSTEM_SHUTDOWN),
send_trailer(StateData),
ok
end,
{stop, normal, StateData};
handle_info({force_update_presence, LUser}, StateName,
#state{user = LUser, server = LServer} = StateData) ->
NewStateData = case StateData#state.pres_last of
#xmlel{name = <<"presence">>} ->
PresenceEl =
ejabberd_hooks:run_fold(c2s_update_presence,
LServer,
StateData#state.pres_last,
[LUser, LServer]),
StateData2 = StateData#state{pres_last = PresenceEl},
presence_update(StateData2#state.jid, PresenceEl,
StateData2),
StateData2;
_ -> StateData
end,
{next_state, StateName, NewStateData};
handle_info({broadcast, Type, From, Packet}, StateName, StateData) ->
Recipients = ejabberd_hooks:run_fold(
c2s_broadcast_recipients, StateData#state.server,
[],
[StateData, Type, From, Packet]),
lists:foreach(
fun(USR) ->
ejabberd_router:route(
From, jlib:make_jid(USR), Packet)
end, lists:usort(Recipients)),
fsm_next_state(StateName, StateData);
handle_info(Info, StateName, StateData) ->
?ERROR_MSG("Unexpected info: ~p", [Info]),
fsm_next_state(StateName, StateData).
%%----------------------------------------------------------------------
%% Func: print_state/1
%% Purpose: Prepare the state to be printed on error log
%% Returns: State to print
%%----------------------------------------------------------------------
print_state(State = #state{pres_t = T, pres_f = F, pres_a = A, pres_i = I}) ->
State#state{pres_t = {pres_t, ?SETS:size(T)},
pres_f = {pres_f, ?SETS:size(F)},
pres_a = {pres_a, ?SETS:size(A)},
pres_i = {pres_i, ?SETS:size(I)}
}.
%%----------------------------------------------------------------------
%% Func: terminate/3
%% Purpose: Shutdown the fsm
%% Returns: any
%%----------------------------------------------------------------------
terminate(_Reason, StateName, StateData) ->
case StateName of
session_established ->
case StateData#state.authenticated of
replaced ->
?INFO_MSG("(~w) Replaced session for ~s",
[StateData#state.socket,
jlib:jid_to_string(StateData#state.jid)]),
From = StateData#state.jid,
Packet = #xmlel{name = <<"presence">>,
attrs = [{<<"type">>, <<"unavailable">>}],
children =
[#xmlel{name = <<"status">>, attrs = [],
children =
[{xmlcdata,
<<"Replaced by new connection">>}]}]},
ejabberd_sm:close_session_unset_presence(StateData#state.sid,
StateData#state.user,
StateData#state.server,
StateData#state.resource,
<<"Replaced by new connection">>),
presence_broadcast(StateData, From,
StateData#state.pres_a, Packet),
presence_broadcast(StateData, From,
StateData#state.pres_i, Packet);
_ ->
?INFO_MSG("(~w) Close session for ~s",
[StateData#state.socket,
jlib:jid_to_string(StateData#state.jid)]),
EmptySet = (?SETS):new(),
case StateData of
#state{pres_last = undefined, pres_a = EmptySet, pres_i = EmptySet, pres_invis = false} ->
ejabberd_sm:close_session(StateData#state.sid,
StateData#state.user,
StateData#state.server,
StateData#state.resource);
_ ->
From = StateData#state.jid,
Packet = #xmlel{name = <<"presence">>,
attrs = [{<<"type">>, <<"unavailable">>}],
children = []},
ejabberd_sm:close_session_unset_presence(StateData#state.sid,
StateData#state.user,
StateData#state.server,
StateData#state.resource,
<<"">>),
presence_broadcast(StateData, From,
StateData#state.pres_a, Packet),
presence_broadcast(StateData, From,
StateData#state.pres_i, Packet)
end
end,
bounce_messages();
_ ->
ok
end,
(StateData#state.sockmod):close(StateData#state.socket),
ok.
%%%----------------------------------------------------------------------
%%% Internal functions
%%%----------------------------------------------------------------------
change_shaper(StateData, JID) ->
Shaper = acl:match_rule(StateData#state.server,
StateData#state.shaper, JID),
(StateData#state.sockmod):change_shaper(StateData#state.socket,
Shaper).
send_text(StateData, Text) when StateData#state.xml_socket ->
?DEBUG("Send Text on stream = ~p", [Text]),
(StateData#state.sockmod):send_xml(StateData#state.socket,
{xmlstreamraw, Text});
send_text(StateData, Text) ->
?DEBUG("Send XML on stream = ~p", [Text]),
(StateData#state.sockmod):send(StateData#state.socket, Text).
send_element(StateData, El) when StateData#state.xml_socket ->
(StateData#state.sockmod):send_xml(StateData#state.socket,
{xmlstreamelement, El});
send_element(StateData, El) ->
send_text(StateData, xml:element_to_binary(El)).
send_header(StateData, Server, Version, Lang)
when StateData#state.xml_socket ->
VersionAttr = case Version of
<<"">> -> [];
_ -> [{<<"version">>, Version}]
end,
LangAttr = case Lang of
<<"">> -> [];
_ -> [{<<"xml:lang">>, Lang}]
end,
Header = {xmlstreamstart, <<"stream:stream">>,
VersionAttr ++
LangAttr ++
[{<<"xmlns">>, <<"jabber:client">>},
{<<"xmlns:stream">>,
<<"http://etherx.jabber.org/streams">>},
{<<"id">>, StateData#state.streamid},
{<<"from">>, Server}]},
(StateData#state.sockmod):send_xml(StateData#state.socket,
Header);
send_header(StateData, Server, Version, Lang) ->
VersionStr = case Version of
<<"">> -> <<"">>;
_ -> [<<" version='">>, Version, <<"'">>]
end,
LangStr = case Lang of
<<"">> -> <<"">>;
_ -> [<<" xml:lang='">>, Lang, <<"'">>]
end,
Header = io_lib:format(?STREAM_HEADER,
[StateData#state.streamid, Server, VersionStr,
LangStr]),
send_text(StateData, iolist_to_binary(Header)).
send_trailer(StateData)
when StateData#state.xml_socket ->
(StateData#state.sockmod):send_xml(StateData#state.socket,
{xmlstreamend, <<"stream:stream">>});
send_trailer(StateData) ->
send_text(StateData, ?STREAM_TRAILER).
new_id() -> randoms:get_string().
is_auth_packet(El) ->
case jlib:iq_query_info(El) of
#iq{id = ID, type = Type, xmlns = ?NS_AUTH,
sub_el = SubEl} ->
#xmlel{children = Els} = SubEl,
{auth, ID, Type,
get_auth_tags(Els, <<"">>, <<"">>, <<"">>, <<"">>)};
_ -> false
end.
get_auth_tags([#xmlel{name = Name, children = Els} | L],
U, P, D, R) ->
CData = xml:get_cdata(Els),
case Name of
<<"username">> -> get_auth_tags(L, CData, P, D, R);
<<"password">> -> get_auth_tags(L, U, CData, D, R);
<<"digest">> -> get_auth_tags(L, U, P, CData, R);
<<"resource">> -> get_auth_tags(L, U, P, D, CData);
_ -> get_auth_tags(L, U, P, D, R)
end;
get_auth_tags([_ | L], U, P, D, R) ->
get_auth_tags(L, U, P, D, R);
get_auth_tags([], U, P, D, R) ->
{U, P, D, R}.
%% Copied from ejabberd_socket.erl
-record(socket_state, {sockmod, socket, receiver}).
get_conn_type(StateData) ->
case (StateData#state.sockmod):get_sockmod(StateData#state.socket) of
gen_tcp -> c2s;
p1_tls -> c2s_tls;
ezlib ->
case ezlib:get_sockmod((StateData#state.socket)#socket_state.socket) of
gen_tcp -> c2s_compressed;
p1_tls -> c2s_compressed_tls
end;
ejabberd_http_poll -> http_poll;
ejabberd_http_bind -> http_bind;
_ -> unknown
end.
process_presence_probe(From, To, StateData) ->
LFrom = jlib:jid_tolower(From),
LBFrom = setelement(3, LFrom, <<"">>),
case StateData#state.pres_last of
undefined ->
ok;
_ ->
Cond1 = (not StateData#state.pres_invis)
andalso (?SETS:is_element(LFrom, StateData#state.pres_f)
orelse
((LFrom /= LBFrom) andalso
?SETS:is_element(LBFrom, StateData#state.pres_f)))
andalso (not
(?SETS:is_element(LFrom, StateData#state.pres_i)
orelse
((LFrom /= LBFrom) andalso
?SETS:is_element(LBFrom, StateData#state.pres_i)))),
Cond2 = StateData#state.pres_invis
andalso ?SETS:is_element(LFrom, StateData#state.pres_f)
andalso ?SETS:is_element(LFrom, StateData#state.pres_a),
if
Cond1 ->
Timestamp = StateData#state.pres_timestamp,
Packet = xml:append_subtags(
StateData#state.pres_last,
%% To is the one sending the presence (the target of the probe)
[jlib:timestamp_to_xml(Timestamp, utc, To, <<"">>),
%% TODO: Delete the next line once XEP-0091 is Obsolete
jlib:timestamp_to_xml(Timestamp)]),
case privacy_check_packet(StateData, To, From, Packet, out) of
deny ->
ok;
allow ->
Pid=element(2, StateData#state.sid),
ejabberd_hooks:run(presence_probe_hook, StateData#state.server, [From, To, Pid]),
%% Don't route a presence probe to oneself
case From == To of
false ->
ejabberd_router:route(To, From, Packet);
true ->
ok
end
end;
Cond2 ->
ejabberd_router:route(To, From,
#xmlel{name = <<"presence">>,
attrs = [],
children = []});
true ->
ok
end
end.
%% User updates his presence (non-directed presence packet)
presence_update(From, Packet, StateData) ->
#xmlel{attrs = Attrs} = Packet,
case xml:get_attr_s(<<"type">>, Attrs) of
<<"unavailable">> ->
Status = case xml:get_subtag(Packet, <<"status">>) of
false -> <<"">>;
StatusTag -> xml:get_tag_cdata(StatusTag)
end,
Info = [{ip, StateData#state.ip},
{conn, StateData#state.conn},
{auth_module, StateData#state.auth_module}],
ejabberd_sm:unset_presence(StateData#state.sid,
StateData#state.user,
StateData#state.server,
StateData#state.resource, Status, Info),
presence_broadcast(StateData, From,
StateData#state.pres_a, Packet),
StateData#state{pres_last = undefined,
pres_timestamp = undefined, pres_a = (?SETS):new()};
<<"error">> -> StateData;
<<"probe">> -> StateData;
<<"subscribe">> -> StateData;
<<"subscribed">> -> StateData;
<<"unsubscribe">> -> StateData;
<<"unsubscribed">> -> StateData;
_ ->
OldPriority = case StateData#state.pres_last of
undefined -> 0;
OldPresence -> get_priority_from_presence(OldPresence)
end,
NewPriority = get_priority_from_presence(Packet),
Timestamp = calendar:now_to_universal_time(now()),
update_priority(NewPriority, Packet, StateData),
FromUnavail = (StateData#state.pres_last == undefined),
?DEBUG("from unavail = ~p~n", [FromUnavail]),
NewStateData = StateData#state{pres_last = Packet,
pres_timestamp = Timestamp},
NewState = if FromUnavail ->
ejabberd_hooks:run(user_available_hook,
NewStateData#state.server,
[NewStateData#state.jid]),
if NewPriority >= 0 ->
resend_offline_messages(NewStateData),
resend_subscription_requests(NewStateData);
true -> ok
end,
presence_broadcast_first(From, NewStateData,
Packet);
true ->
presence_broadcast_to_trusted(NewStateData, From,
NewStateData#state.pres_f,
NewStateData#state.pres_a,
Packet),
if OldPriority < 0, NewPriority >= 0 ->
resend_offline_messages(NewStateData);
true -> ok
end,
NewStateData
end,
NewState
end.
%% User sends a directed presence packet
presence_track(From, To, Packet, StateData) ->
#xmlel{attrs = Attrs} = Packet,
LTo = jlib:jid_tolower(To),
User = StateData#state.user,
Server = StateData#state.server,
case xml:get_attr_s(<<"type">>, Attrs) of
<<"unavailable">> ->
check_privacy_route(From, StateData, From, To, Packet),
A = remove_element(LTo, StateData#state.pres_a),
StateData#state{pres_a = A};
<<"subscribe">> ->
ejabberd_hooks:run(roster_out_subscription, Server,
[User, Server, To, subscribe]),
check_privacy_route(From, StateData,
jlib:jid_remove_resource(From), To, Packet),
StateData;
<<"subscribed">> ->
ejabberd_hooks:run(roster_out_subscription, Server,
[User, Server, To, subscribed]),
check_privacy_route(From, StateData,
jlib:jid_remove_resource(From), To, Packet),
StateData;
<<"unsubscribe">> ->
ejabberd_hooks:run(roster_out_subscription, Server,
[User, Server, To, unsubscribe]),
check_privacy_route(From, StateData,
jlib:jid_remove_resource(From), To, Packet),
StateData;
<<"unsubscribed">> ->
ejabberd_hooks:run(roster_out_subscription, Server,
[User, Server, To, unsubscribed]),
check_privacy_route(From, StateData,
jlib:jid_remove_resource(From), To, Packet),
StateData;
<<"error">> ->
check_privacy_route(From, StateData, From, To, Packet),
StateData;
<<"probe">> ->
check_privacy_route(From, StateData, From, To, Packet),
StateData;
_ ->
check_privacy_route(From, StateData, From, To, Packet),
A = (?SETS):add_element(LTo, StateData#state.pres_a),
StateData#state{pres_a = A}
end.
check_privacy_route(From, StateData, FromRoute, To,
Packet) ->
case privacy_check_packet(StateData, From, To, Packet,
out)
of
deny ->
Lang = StateData#state.lang,
ErrText = <<"Your active privacy list has denied "
"the routing of this stanza.">>,
Err = jlib:make_error_reply(Packet,
?ERRT_NOT_ACCEPTABLE(Lang, ErrText)),
ejabberd_router:route(To, From, Err),
ok;
allow -> ejabberd_router:route(FromRoute, To, Packet)
end.
%% Check if privacy rules allow this delivery
privacy_check_packet(StateData, From, To, Packet,
Dir) ->
ejabberd_hooks:run_fold(privacy_check_packet,
StateData#state.server, allow,
[StateData#state.user, StateData#state.server,
StateData#state.privacy_list, {From, To, Packet},
Dir]).
is_privacy_allow(StateData, From, To, Packet, Dir) ->
allow ==
privacy_check_packet(StateData, From, To, Packet, Dir).
%% Send presence when disconnecting
presence_broadcast(StateData, From, JIDSet, Packet) ->
JIDs = ?SETS:to_list(JIDSet),
JIDs2 = format_and_check_privacy(From, StateData, Packet, JIDs, out),
send_multiple(StateData, From, JIDs2, Packet).
%% Send presence when updating presence
presence_broadcast_to_trusted(StateData, From, Trusted, JIDSet, Packet) ->
JIDs = ?SETS:to_list(JIDSet),
JIDs_trusted = [JID || JID <- JIDs, ?SETS:is_element(JID, Trusted)],
JIDs2 = format_and_check_privacy(From, StateData, Packet, JIDs_trusted, out),
send_multiple(StateData, From, JIDs2, Packet).
%% Send presence when connecting
presence_broadcast_first(From, StateData, Packet) ->
JIDsProbe =
?SETS:fold(
fun(JID, L) -> [JID | L] end,
[],
StateData#state.pres_t),
PacketProbe = #xmlel{name = <<"presence">>, attrs = [{<<"type">>,<<"probe">>}], children = []},
JIDs2Probe = format_and_check_privacy(From, StateData, Packet, JIDsProbe, out),
Server = StateData#state.server,
send_multiple(StateData, From, JIDs2Probe, PacketProbe),
{As, JIDs} =
?SETS:fold(
fun(JID, {A, JID_list}) ->
{?SETS:add_element(JID, A), JID_list++[JID]}
end,
{StateData#state.pres_a, []},
StateData#state.pres_f),
JIDs2 = format_and_check_privacy(From, StateData, Packet, JIDs, out),
Server = StateData#state.server,
send_multiple(StateData, From, JIDs2, Packet),
StateData#state{pres_a = As}.
format_and_check_privacy(From, StateData, Packet, JIDs, Dir) ->
FJIDs = [jlib:make_jid(JID) || JID <- JIDs],
lists:filter(
fun(FJID) ->
case ejabberd_hooks:run_fold(
privacy_check_packet, StateData#state.server,
allow,
[StateData#state.user,
StateData#state.server,
StateData#state.privacy_list,
{From, FJID, Packet},
Dir]) of
deny -> false;
allow -> true
end
end,
FJIDs).
send_multiple(StateData, From, JIDs, Packet) ->
lists:foreach(
fun(JID) ->
case privacy_check_packet(StateData, From, JID, Packet, out) of
deny ->
ok;
allow ->
ejabberd_router:route(From, JID, Packet)
end
end, JIDs).
remove_element(E, Set) ->
case (?SETS):is_element(E, Set) of
true -> (?SETS):del_element(E, Set);
_ -> Set
end.
roster_change(IJID, ISubscription, StateData) ->
LIJID = jlib:jid_tolower(IJID),
IsFrom = (ISubscription == both) or
(ISubscription == from),
IsTo = (ISubscription == both) or (ISubscription == to),
OldIsFrom = (?SETS):is_element(LIJID,
StateData#state.pres_f),
FSet = if IsFrom ->
(?SETS):add_element(LIJID, StateData#state.pres_f);
true -> remove_element(LIJID, StateData#state.pres_f)
end,
TSet = if IsTo ->
(?SETS):add_element(LIJID, StateData#state.pres_t);
true -> remove_element(LIJID, StateData#state.pres_t)
end,
case StateData#state.pres_last of
undefined ->
StateData#state{pres_f = FSet, pres_t = TSet};
P ->
?DEBUG("roster changed for ~p~n",
[StateData#state.user]),
From = StateData#state.jid,
To = jlib:make_jid(IJID),
Cond1 = IsFrom andalso not OldIsFrom,
Cond2 = not IsFrom andalso OldIsFrom andalso
((?SETS):is_element(LIJID, StateData#state.pres_a)),
if Cond1 ->
?DEBUG("C1: ~p~n", [LIJID]),
case privacy_check_packet(StateData, From, To, P, out)
of
deny -> ok;
allow -> ejabberd_router:route(From, To, P)
end,
A = (?SETS):add_element(LIJID, StateData#state.pres_a),
StateData#state{pres_a = A, pres_f = FSet,
pres_t = TSet};
Cond2 ->
?DEBUG("C2: ~p~n", [LIJID]),
PU = #xmlel{name = <<"presence">>,
attrs = [{<<"type">>, <<"unavailable">>}],
children = []},
case privacy_check_packet(StateData, From, To, PU, out)
of
deny -> ok;
allow -> ejabberd_router:route(From, To, PU)
end,
A = remove_element(LIJID, StateData#state.pres_a),
StateData#state{pres_a = A, pres_f = FSet,
pres_t = TSet};
true -> StateData#state{pres_f = FSet, pres_t = TSet}
end
end.
update_priority(Priority, Packet, StateData) ->
Info = [{ip, StateData#state.ip}, {conn, StateData#state.conn},
{auth_module, StateData#state.auth_module}],
ejabberd_sm:set_presence(StateData#state.sid,
StateData#state.user, StateData#state.server,
StateData#state.resource, Priority, Packet, Info).
get_priority_from_presence(PresencePacket) ->
case xml:get_subtag(PresencePacket, <<"priority">>) of
false -> 0;
SubEl ->
case catch
jlib:binary_to_integer(xml:get_tag_cdata(SubEl))
of
P when is_integer(P) -> P;
_ -> 0
end
end.
process_privacy_iq(From, To,
#iq{type = Type, sub_el = SubEl} = IQ, StateData) ->
{Res, NewStateData} = case Type of
get ->
R = ejabberd_hooks:run_fold(privacy_iq_get,
StateData#state.server,
{error,
?ERR_FEATURE_NOT_IMPLEMENTED},
[From, To, IQ,
StateData#state.privacy_list]),
{R, StateData};
set ->
case ejabberd_hooks:run_fold(privacy_iq_set,
StateData#state.server,
{error,
?ERR_FEATURE_NOT_IMPLEMENTED},
[From, To, IQ])
of
{result, R, NewPrivList} ->
{{result, R},
StateData#state{privacy_list =
NewPrivList}};
R -> {R, StateData}
end
end,
IQRes = case Res of
{result, Result} ->
IQ#iq{type = result, sub_el = Result};
{error, Error} ->
IQ#iq{type = error, sub_el = [SubEl, Error]}
end,
ejabberd_router:route(To, From, jlib:iq_to_xml(IQRes)),
NewStateData.
resend_offline_messages(StateData) ->
case
ejabberd_hooks:run_fold(resend_offline_messages_hook,
StateData#state.server, [],
[StateData#state.user, StateData#state.server])
of
Rs -> %%when is_list(Rs) ->
lists:foreach(fun ({route, From, To,
#xmlel{} = Packet}) ->
Pass = case privacy_check_packet(StateData,
From, To,
Packet, in)
of
allow -> true;
deny -> false
end,
if Pass ->
ejabberd_router:route(From, To, Packet);
%% send_element(StateData, FixedPacket),
%% ejabberd_hooks:run(user_receive_packet,
%% StateData#state.server,
%% [StateData#state.jid,
%% From, To, FixedPacket]);
true -> ok
end
end,
Rs)
end.
resend_subscription_requests(#state{user = User,
server = Server} =
StateData) ->
PendingSubscriptions =
ejabberd_hooks:run_fold(resend_subscription_requests_hook,
Server, [], [User, Server]),
lists:foreach(fun (XMLPacket) ->
send_element(StateData, XMLPacket)
end,
PendingSubscriptions).
get_showtag(undefined) -> <<"unavailable">>;
get_showtag(Presence) ->
case xml:get_path_s(Presence,
[{elem, <<"show">>}, cdata])
of
<<"">> -> <<"available">>;
ShowTag -> ShowTag
end.
get_statustag(undefined) -> <<"">>;
get_statustag(Presence) ->
case xml:get_path_s(Presence,
[{elem, <<"status">>}, cdata])
of
ShowTag -> ShowTag
end.
process_unauthenticated_stanza(StateData, El) ->
NewEl = case xml:get_tag_attr_s(<<"xml:lang">>, El) of
<<"">> ->
case StateData#state.lang of
<<"">> -> El;
Lang -> xml:replace_tag_attr(<<"xml:lang">>, Lang, El)
end;
_ -> El
end,
case jlib:iq_query_info(NewEl) of
#iq{} = IQ ->
Res = ejabberd_hooks:run_fold(c2s_unauthenticated_iq,
StateData#state.server, empty,
[StateData#state.server, IQ,
StateData#state.ip]),
case Res of
empty ->
ResIQ = IQ#iq{type = error,
sub_el = [?ERR_SERVICE_UNAVAILABLE]},
Res1 = jlib:replace_from_to(jlib:make_jid(<<"">>,
StateData#state.server,
<<"">>),
jlib:make_jid(<<"">>, <<"">>,
<<"">>),
jlib:iq_to_xml(ResIQ)),
send_element(StateData,
jlib:remove_attr(<<"to">>, Res1));
_ -> send_element(StateData, Res)
end;
_ ->
% Drop any stanza, which isn't IQ stanza
ok
end.
peerip(SockMod, Socket) ->
IP = case SockMod of
gen_tcp -> inet:peername(Socket);
_ -> SockMod:peername(Socket)
end,
case IP of
{ok, IPOK} -> IPOK;
_ -> undefined
end.
%% fsm_next_state_pack: Pack the StateData structure to improve
%% sharing.
fsm_next_state_pack(StateName, StateData) ->
fsm_next_state_gc(StateName, pack(StateData)).
%% fsm_next_state_gc: Garbage collect the process heap to make use of
%% the newly packed StateData structure.
fsm_next_state_gc(StateName, PackedStateData) ->
erlang:garbage_collect(),
fsm_next_state(StateName, PackedStateData).
%% fsm_next_state: Generate the next_state FSM tuple with different
%% timeout, depending on the future state
fsm_next_state(session_established, StateData) ->
{next_state, session_established, StateData,
?C2S_HIBERNATE_TIMEOUT};
fsm_next_state(StateName, StateData) ->
{next_state, StateName, StateData, ?C2S_OPEN_TIMEOUT}.
%% fsm_reply: Generate the reply FSM tuple with different timeout,
%% depending on the future state
fsm_reply(Reply, session_established, StateData) ->
{reply, Reply, session_established, StateData,
?C2S_HIBERNATE_TIMEOUT};
fsm_reply(Reply, StateName, StateData) ->
{reply, Reply, StateName, StateData, ?C2S_OPEN_TIMEOUT}.
%% Used by c2s blacklist plugins
is_ip_blacklisted(undefined) -> false;
is_ip_blacklisted({IP, _Port}) ->
ejabberd_hooks:run_fold(check_bl_c2s, false, [IP]).
%% Check from attributes
%% returns invalid-from|NewElement
check_from(El, FromJID) ->
case xml:get_tag_attr(<<"from">>, El) of
false -> El;
{value, SJID} ->
JID = jlib:string_to_jid(SJID),
case JID of
error -> 'invalid-from';
#jid{} ->
if (JID#jid.luser == FromJID#jid.luser) and
(JID#jid.lserver == FromJID#jid.lserver)
and (JID#jid.lresource == FromJID#jid.lresource) ->
El;
(JID#jid.luser == FromJID#jid.luser) and
(JID#jid.lserver == FromJID#jid.lserver)
and (JID#jid.lresource == <<"">>) ->
El;
true -> 'invalid-from'
end
end
end.
fsm_limit_opts(Opts) ->
case lists:keysearch(max_fsm_queue, 1, Opts) of
{value, {_, N}} when is_integer(N) -> [{max_queue, N}];
_ ->
case ejabberd_config:get_option(
max_fsm_queue,
fun(I) when is_integer(I), I > 0 -> I end) of
undefined -> [];
N -> [{max_queue, N}]
end
end.
bounce_messages() ->
receive
{route, From, To, El} ->
ejabberd_router:route(From, To, El), bounce_messages()
after 0 -> ok
end.
%%%----------------------------------------------------------------------
%%% XEP-0191
%%%----------------------------------------------------------------------
route_blocking(What, StateData) ->
SubEl = case What of
{block, JIDs} ->
#xmlel{name = <<"block">>,
attrs = [{<<"xmlns">>, ?NS_BLOCKING}],
children =
lists:map(fun (JID) ->
#xmlel{name = <<"item">>,
attrs =
[{<<"jid">>,
jlib:jid_to_string(JID)}],
children = []}
end,
JIDs)};
{unblock, JIDs} ->
#xmlel{name = <<"unblock">>,
attrs = [{<<"xmlns">>, ?NS_BLOCKING}],
children =
lists:map(fun (JID) ->
#xmlel{name = <<"item">>,
attrs =
[{<<"jid">>,
jlib:jid_to_string(JID)}],
children = []}
end,
JIDs)};
unblock_all ->
#xmlel{name = <<"unblock">>,
attrs = [{<<"xmlns">>, ?NS_BLOCKING}], children = []}
end,
PrivPushIQ = #iq{type = set, xmlns = ?NS_BLOCKING,
id = <<"push">>, sub_el = [SubEl]},
PrivPushEl =
jlib:replace_from_to(jlib:jid_remove_resource(StateData#state.jid),
StateData#state.jid, jlib:iq_to_xml(PrivPushIQ)),
send_element(StateData, PrivPushEl),
%% No need to replace active privacy list here,
%% blocking pushes are always accompanied by
%% Privacy List pushes
ok.
%%%----------------------------------------------------------------------
%%% JID Set memory footprint reduction code
%%%----------------------------------------------------------------------
%% Try to reduce the heap footprint of the four presence sets
%% by ensuring that we re-use strings and Jids wherever possible.
pack(S = #state{pres_a = A, pres_f = F,
pres_t = T}) ->
{NewA, Pack2} = pack_jid_set(A, gb_trees:empty()),
{NewF, Pack3} = pack_jid_set(F, Pack2),
{NewT, _Pack4} = pack_jid_set(T, Pack3),
S#state{pres_a = NewA, pres_f = NewF,
pres_t = NewT}.
pack_jid_set(Set, Pack) ->
Jids = (?SETS):to_list(Set),
{PackedJids, NewPack} = pack_jids(Jids, Pack, []),
{(?SETS):from_list(PackedJids), NewPack}.
pack_jids([], Pack, Acc) -> {Acc, Pack};
pack_jids([{U, S, R} = Jid | Jids], Pack, Acc) ->
case gb_trees:lookup(Jid, Pack) of
{value, PackedJid} ->
pack_jids(Jids, Pack, [PackedJid | Acc]);
none ->
{NewU, Pack1} = pack_string(U, Pack),
{NewS, Pack2} = pack_string(S, Pack1),
{NewR, Pack3} = pack_string(R, Pack2),
NewJid = {NewU, NewS, NewR},
NewPack = gb_trees:insert(NewJid, NewJid, Pack3),
pack_jids(Jids, NewPack, [NewJid | Acc])
end.
pack_string(String, Pack) ->
case gb_trees:lookup(String, Pack) of
{value, PackedString} -> {PackedString, Pack};
none -> {String, gb_trees:insert(String, String, Pack)}
end.
transform_listen_option(Opt, Opts) ->
[Opt|Opts].
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