%%%---------------------------------------------------------------------- %%% File : ejabberd_c2s.erl %%% Author : Alexey Shchepin %%% Purpose : Serve C2S connection %%% Created : 16 Nov 2002 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2008 Process-one %%% %%% 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}). -behaviour(gen_fsm). %% External exports -export([start/2, start_link/2, send_text/2, send_element/2, socket_type/0, get_presence/1, get_subscribed_and_online/1]). %% 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]). -include("ejabberd.hrl"). -include("jlib.hrl"). -define(SETS, gb_sets). -define(DICT, dict). -record(state, {socket, sockmod, socket_monitor, 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_available = ?DICT:new(), pres_last, pres_pri, pres_timestamp, pres_invis = false, privacy_list = none, conn = unknown, ip, 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], ?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, "" "" ). -define(STREAM_TRAILER, ""). -define(INVALID_NS_ERR, xml:element_to_string(?SERR_INVALID_NAMESPACE)). -define(INVALID_XML_ERR, xml:element_to_string(?SERR_XML_NOT_WELL_FORMED)). -define(HOST_UNKNOWN_ERR, xml:element_to_string(?SERR_HOST_UNKNOWN)). -define(POLICY_VIOLATION_ERR(Lang, Text), xml:element_to_string(?SERRT_POLICY_VIOLATION(Lang, Text))). %%%---------------------------------------------------------------------- %%% API %%%---------------------------------------------------------------------- start(SockData, Opts) -> ?SUPERVISOR_START. start_link(SockData, Opts) -> gen_fsm:start_link(ejabberd_c2s, [SockData, 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). %%%---------------------------------------------------------------------- %%% 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, Zlib = lists:member(zlib, Opts), StartTLS = lists:member(starttls, Opts), StartTLSRequired = lists:member(starttls_required, Opts), TLSEnabled = lists:member(tls, Opts), TLS = StartTLS orelse StartTLSRequired orelse TLSEnabled, TLSOpts = lists:filter(fun({certfile, _}) -> true; (_) -> false end, Opts), IP = peerip(SockMod, Socket), Socket1 = if TLSEnabled -> SockMod:starttls(Socket, TLSOpts); true -> Socket end, SocketMonitor = SockMod:monitor(Socket1), {ok, wait_for_stream, #state{socket = Socket1, sockmod = SockMod, socket_monitor = SocketMonitor, zlib = Zlib, tls = TLS, tls_required = StartTLSRequired, tls_enabled = TLSEnabled, tls_options = TLSOpts, streamid = new_id(), access = Access, shaper = Shaper, ip = IP}, ?C2S_OPEN_TIMEOUT}. %% Return list of all available resources of contacts, %% in form [{JID, Caps}]. get_subscribed_and_online(FsmRef) -> gen_fsm:sync_send_all_state_event( FsmRef, get_subscribed_and_online, 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 = case ?MYLANG of undefined -> " xml:lang='en'"; DL -> " xml:lang='" ++ DL ++ "'" end, 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 = xml:get_attr_s("xml:lang", Attrs), change_shaper(StateData, jlib:make_jid("", Server, "")), case xml:get_attr_s("version", Attrs) of "1.0" -> Header = io_lib:format(?STREAM_HEADER, [StateData#state.streamid, Server, " version='1.0'", DefaultLang]), send_text(StateData, Header), case StateData#state.authenticated of false -> SASLState = cyrsasl:server_new( "jabber", Server, "", [], fun(U) -> ejabberd_auth:get_password( U, Server) end, fun(U, P) -> ejabberd_auth:check_password( U, Server, P) end), Mechs = lists:map( fun(S) -> {xmlelement, "mechanism", [], [{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) of true -> [{xmlelement, "compression", [{"xmlns", ?NS_FEATURE_COMPRESS}], [{xmlelement, "method", [], [{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 -> [{xmlelement, "starttls", [{"xmlns", ?NS_TLS}], [{xmlelement, "required", [], []}]}]; _ -> [{xmlelement, "starttls", [{"xmlns", ?NS_TLS}], []}] end; false -> [] end, send_element(StateData, {xmlelement, "stream:features", [], TLSFeature ++ CompressFeature ++ [{xmlelement, "mechanisms", [{"xmlns", ?NS_SASL}], Mechs}] ++ ejabberd_hooks:run_fold( c2s_stream_features, Server, [], [])}), fsm_next_state(wait_for_feature_request, StateData#state{ server = Server, sasl_state = SASLState, lang = Lang}); _ -> case StateData#state.resource of "" -> send_element( StateData, {xmlelement, "stream:features", [], [{xmlelement, "bind", [{"xmlns", ?NS_BIND}], []}, {xmlelement, "session", [{"xmlns", ?NS_SESSION}], []}]}), fsm_next_state(wait_for_bind, StateData#state{ server = Server, lang = Lang}); _ -> send_element( StateData, {xmlelement, "stream:features", [], []}), fsm_next_state(wait_for_session, StateData#state{ server = Server, lang = Lang}) end end; _ -> Header = io_lib:format( ?STREAM_HEADER, [StateData#state.streamid, Server, "", DefaultLang]), if (not StateData#state.tls_enabled) and StateData#state.tls_required -> send_text(StateData, Header ++ ?POLICY_VIOLATION_ERR( Lang, "Use of STARTTLS required") ++ ?STREAM_TRAILER), {stop, normal, StateData}; true -> send_text(StateData, Header), fsm_next_state(wait_for_auth, StateData#state{ server = Server, lang = Lang}) end end; _ -> Header = io_lib:format( ?STREAM_HEADER, [StateData#state.streamid, ?MYNAME, "", DefaultLang]), send_text(StateData, Header ++ ?HOST_UNKNOWN_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData} end; _ -> Header = io_lib:format( ?STREAM_HEADER, [StateData#state.streamid, ?MYNAME, "", DefaultLang]), send_text(StateData, Header ++ ?INVALID_NS_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData} end; wait_for_stream(timeout, StateData) -> {stop, normal, StateData}; wait_for_stream({xmlstreamelement, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_stream({xmlstreamend, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_stream({xmlstreamerror, _}, StateData) -> Header = io_lib:format(?STREAM_HEADER, ["none", ?MYNAME, " version='1.0'", ""]), send_text(StateData, Header ++ ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {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, _, _, _}} -> {xmlelement, Name, Attrs, _Els} = 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 -> {xmlelement, Name, Attrs, [{xmlelement, "query", [{"xmlns", ?NS_AUTH}], [{xmlelement, "username", [], UCdata}, {xmlelement, "password", [], []}, {xmlelement, "digest", [], []}, {xmlelement, "resource", [], []} ]}]}; true -> {xmlelement, Name, Attrs, [{xmlelement, "query", [{"xmlns", ?NS_AUTH}], [{xmlelement, "username", [], UCdata}, {xmlelement, "password", [], []}, {xmlelement, "resource", [], []} ]}]} 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 -> case ejabberd_auth:check_password( U, StateData#state.server, P, StateData#state.streamid, D) of true -> ?INFO_MSG( "(~w) Accepted legacy authentication for ~s", [StateData#state.socket, jlib:jid_to_string(JID)]), SID = {now(), self()}, Conn = get_conn_type(StateData), Info = [{ip, StateData#state.ip}, {conn, Conn}], ejabberd_sm:open_session( SID, U, StateData#state.server, R, Info), Res1 = jlib:make_result_iq_reply(El), Res = setelement(4, Res1, []), 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, none, [U, StateData#state.server]), fsm_next_state(session_established, StateData#state{ user = U, resource = R, jid = JID, sid = SID, conn = Conn, pres_f = ?SETS:from_list(Fs1), pres_t = ?SETS:from_list(Ts1), privacy_list = PrivList}); _ -> ?INFO_MSG( "(~w) Failed legacy authentication for ~s", [StateData#state.socket, jlib:jid_to_string(JID)]), 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_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_auth({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_auth(closed, StateData) -> {stop, normal, StateData}. wait_for_feature_request({xmlstreamelement, El}, StateData) -> {xmlelement, Name, Attrs, 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), send_element(StateData, {xmlelement, "success", [{"xmlns", ?NS_SASL}], []}), U = xml:get_attr_s(username, Props), ?INFO_MSG("(~w) Accepted authentication for ~s", [StateData#state.socket, U]), fsm_next_state(wait_for_stream, StateData#state{ streamid = new_id(), authenticated = true, user = U }); {continue, ServerOut, NewSASLState} -> send_element(StateData, {xmlelement, "challenge", [{"xmlns", ?NS_SASL}], [{xmlcdata, jlib:encode_base64(ServerOut)}]}), fsm_next_state(wait_for_sasl_response, StateData#state{ sasl_state = NewSASLState}); {error, Error, Username} -> ?INFO_MSG( "(~w) Failed authentication for ~s@~s", [StateData#state.socket, Username, StateData#state.server]), send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_SASL}], [{xmlelement, Error, [], []}]}), {next_state, wait_for_feature_request, StateData, ?C2S_OPEN_TIMEOUT}; {error, Error} -> send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_SASL}], [{xmlelement, Error, [], []}]}), 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_local_option( {domain_certfile, StateData#state.server}) 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_string( {xmlelement, "proceed", [{"xmlns", ?NS_TLS}], []})), 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 -> case xml:get_subtag(El, "method") of false -> send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_COMPRESS}], [{xmlelement, "setup-failed", [], []}]}), 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_string( {xmlelement, "compressed", [{"xmlns", ?NS_COMPRESS}], []})), fsm_next_state(wait_for_stream, StateData#state{socket = ZlibSocket, streamid = new_id() }); _ -> send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_COMPRESS}], [{xmlelement, "unsupported-method", [], []}]}), fsm_next_state(wait_for_feature_request, StateData) end end; _ -> if (SockMod == gen_tcp) and TLSRequired -> Lang = StateData#state.lang, send_text(StateData, ?POLICY_VIOLATION_ERR( Lang, "Use of STARTTLS required") ++ ?STREAM_TRAILER), {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_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_feature_request({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_feature_request(closed, StateData) -> {stop, normal, StateData}. wait_for_sasl_response({xmlstreamelement, El}, StateData) -> {xmlelement, Name, Attrs, 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} -> (StateData#state.sockmod):reset_stream( StateData#state.socket), send_element(StateData, {xmlelement, "success", [{"xmlns", ?NS_SASL}], []}), U = xml:get_attr_s(username, Props), ?INFO_MSG("(~w) Accepted authentication for ~s", [StateData#state.socket, U]), fsm_next_state(wait_for_stream, StateData#state{ streamid = new_id(), authenticated = true, user = U}); {continue, ServerOut, NewSASLState} -> send_element(StateData, {xmlelement, "challenge", [{"xmlns", ?NS_SASL}], [{xmlcdata, jlib:encode_base64(ServerOut)}]}), fsm_next_state(wait_for_sasl_response, StateData#state{sasl_state = NewSASLState}); {error, Error, Username} -> ?INFO_MSG( "(~w) Failed authentication for ~s@~s", [StateData#state.socket, Username, StateData#state.server]), send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_SASL}], [{xmlelement, Error, [], []}]}), fsm_next_state(wait_for_feature_request, StateData); {error, Error} -> send_element(StateData, {xmlelement, "failure", [{"xmlns", ?NS_SASL}], [{xmlelement, Error, [], []}]}), 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_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_sasl_response({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_sasl_response(closed, StateData) -> {stop, normal, StateData}. 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; "" -> lists:concat( [randoms:get_string() | 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); _ -> JID = jlib:make_jid(U, StateData#state.server, R), Res = IQ#iq{type = result, sub_el = [{xmlelement, "bind", [{"xmlns", ?NS_BIND}], [{xmlelement, "jid", [], [{xmlcdata, jlib:jid_to_string(JID)}]}]}]}, send_element(StateData, jlib:iq_to_xml(Res)), fsm_next_state(wait_for_session, StateData#state{resource = R, jid = JID}) end; _ -> fsm_next_state(wait_for_bind, StateData) end; wait_for_bind(timeout, StateData) -> {stop, normal, StateData}; wait_for_bind({xmlstreamend, _Name}, StateData) -> send_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_bind({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {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)]), SID = {now(), self()}, Conn = get_conn_type(StateData), Info = [{ip, StateData#state.ip}, {conn, Conn}], ejabberd_sm:open_session( SID, U, StateData#state.server, R, Info), Res = jlib:make_result_iq_reply(El), 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, none, [U, StateData#state.server]), fsm_next_state(session_established, StateData#state{ sid = SID, conn = Conn, pres_f = ?SETS:from_list(Fs1), pres_t = ?SETS:from_list(Ts1), privacy_list = PrivList}); _ -> ?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_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_session({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; wait_for_session(closed, StateData) -> {stop, normal, StateData}. session_established({xmlstreamelement, El}, StateData) -> {xmlelement, Name, Attrs, _Els} = El, User = StateData#state.user, Server = StateData#state.server, % TODO: check 'from' attribute in stanza 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]), 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 StateData#state.privacy_list of none -> ejabberd_router:route(FromJID, ToJID, NewEl), StateData; _PrivList -> case jlib:iq_query_info(NewEl) of #iq{xmlns = ?NS_PRIVACY} = IQ -> process_privacy_iq( FromJID, ToJID, IQ, StateData); _ -> ejabberd_hooks:run( user_send_packet, Server, [FromJID, ToJID, NewEl]), ejabberd_router:route( FromJID, ToJID, NewEl), StateData end end; "message" -> ejabberd_hooks:run(user_send_packet, Server, [FromJID, ToJID, NewEl]), ejabberd_router:route(FromJID, ToJID, NewEl), StateData; _ -> StateData end end, ejabberd_hooks:run(c2s_loop_debug, [{xmlstreamelement, El}]), fsm_next_state(session_established, NewState); %% We hibernate the process to reduce memory consumption after a %% configurable activity timeout session_established(timeout, StateData) -> %% TODO: Options must be stored in state: 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_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; session_established({xmlstreamerror, _}, StateData) -> send_text(StateData, ?INVALID_XML_ERR ++ ?STREAM_TRAILER), {stop, normal, StateData}; session_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) -> 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_and_online, _From, StateName, StateData) -> Subscribed = StateData#state.pres_f, Online = StateData#state.pres_available, Pred = fun(User, _Caps) -> ?SETS:is_element(jlib:jid_remove_resource(User), Subscribed) orelse ?SETS:is_element(User, Subscribed) end, SubscribedAndOnline = ?DICT:filter(Pred, Online), {reply, ?DICT:to_list(SubscribedAndOnline), 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_text(StateData, xml:element_to_string( ?SERRT_CONFLICT(Lang, "Replaced by new connection")) ++ ?STREAM_TRAILER), {stop, normal, StateData#state{authenticated = replaced}}; handle_info({route, From, To, Packet}, StateName, StateData) -> {xmlelement, Name, Attrs, Els} = Packet, {Pass, NewAttrs, NewState} = case Name of "presence" -> 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, StateData#state.pres_a) orelse ?SETS:is_element( LBFrom, StateData#state.pres_a) of true -> StateData; false -> case ?SETS:is_element( LFrom, StateData#state.pres_f) of true -> A = ?SETS:add_element( LFrom, StateData#state.pres_a), StateData#state{pres_a = A}; false -> case ?SETS:is_element( LBFrom, StateData#state.pres_f) of true -> A = ?SETS:add_element( LBFrom, StateData#state.pres_a), StateData#state{pres_a = A}; false -> StateData end end end, process_presence_probe(From, To, NewStateData), {false, Attrs, NewStateData}; "error" -> NewA = remove_element(jlib:jid_tolower(From), StateData#state.pres_a), {true, Attrs, StateData#state{pres_a = NewA}}; "invisible" -> Attrs1 = lists:keydelete("type", 1, Attrs), {true, [{"type", "unavailable"} | Attrs1], StateData}; "subscribe" -> {true, Attrs, StateData}; "subscribed" -> {true, Attrs, StateData}; "unsubscribe" -> {true, Attrs, StateData}; "unsubscribed" -> {true, Attrs, StateData}; _ -> case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {From, To, Packet}, in]) of allow -> LFrom = jlib:jid_tolower(From), LBFrom = jlib:jid_remove_resource(LFrom), %% Note contact availability Caps = mod_caps:read_caps(Els), mod_caps:note_caps(StateData#state.server, From, Caps), NewAvailable = case xml:get_attr_s("type", Attrs) of "unavailable" -> ?DICT:erase(LFrom, StateData#state.pres_available); _ -> ?DICT:store(LFrom, Caps, StateData#state.pres_available) end, NewStateData = StateData#state{pres_available = NewAvailable}, case ?SETS:is_element( LFrom, NewStateData#state.pres_a) orelse ?SETS:is_element( LBFrom, NewStateData#state.pres_a) of true -> {true, Attrs, NewStateData}; false -> case ?SETS:is_element( LFrom, NewStateData#state.pres_f) of true -> A = ?SETS:add_element( LFrom, NewStateData#state.pres_a), {true, Attrs, NewStateData#state{pres_a = A}}; false -> case ?SETS:is_element( LBFrom, NewStateData#state.pres_f) of true -> A = ?SETS:add_element( LBFrom, NewStateData#state.pres_a), {true, Attrs, NewStateData#state{pres_a = A}}; false -> {true, Attrs, NewStateData} end end end; deny -> {false, Attrs, StateData} end end; "broadcast" -> ?DEBUG("broadcast~n~p~n", [Els]), case Els of [{item, IJID, ISubscription}] -> {false, Attrs, roster_change(IJID, ISubscription, StateData)}; [{exit, Reason}] -> {exit, Attrs, Reason}; [{privacy_list, PrivList, PrivListName}] -> case ejabberd_hooks:run_fold( privacy_updated_list, StateData#state.server, false, [StateData#state.privacy_list, PrivList]) of false -> {false, Attrs, StateData}; NewPL -> PrivPushIQ = #iq{type = set, xmlns = ?NS_PRIVACY, id = "push", sub_el = [{xmlelement, "query", [{"xmlns", ?NS_PRIVACY}], [{xmlelement, "list", [{"name", PrivListName}], []}]}]}, PrivPushEl = jlib:replace_from_to( jlib:jid_remove_resource( StateData#state.jid), StateData#state.jid, jlib:iq_to_xml(PrivPushIQ)), send_element(StateData, PrivPushEl), {false, Attrs, StateData#state{privacy_list = NewPL}} end; _ -> {false, Attrs, StateData} end; "iq" -> IQ = jlib:iq_query_info(Packet), case IQ of #iq{xmlns = ?NS_VCARD} -> Host = StateData#state.server, case ets:lookup(sm_iqtable, {?NS_VCARD, Host}) of [{_, Module, Function, Opts}] -> gen_iq_handler:handle(Host, Module, Function, Opts, From, To, IQ); [] -> Err = jlib:make_error_reply( Packet, ?ERR_FEATURE_NOT_IMPLEMENTED), ejabberd_router:route(To, From, Err) end, {false, Attrs, StateData}; #iq{} -> case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {From, To, Packet}, in]) of allow -> {true, Attrs, StateData}; deny -> Err = jlib:make_error_reply( Packet, ?ERR_FEATURE_NOT_IMPLEMENTED), ejabberd_router:route(To, From, Err), {false, Attrs, StateData} end; _ -> {true, Attrs, StateData} end; "message" -> case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {From, To, Packet}, in]) of allow -> {true, Attrs, StateData}; deny -> {false, Attrs, StateData} end; _ -> {true, Attrs, StateData} end, if Pass == exit -> catch send_text(StateData, ?STREAM_TRAILER), {stop, normal, StateData}; Pass -> Attrs2 = jlib:replace_from_to_attrs(jlib:jid_to_string(From), jlib:jid_to_string(To), NewAttrs), FixedPacket = {xmlelement, Name, Attrs2, Els}, Text = xml:element_to_string(FixedPacket), send_text(StateData, Text), 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(Info, StateName, StateData) -> ?ERROR_MSG("Unexpected info: ~p", [Info]), fsm_next_state(StateName, StateData). %%---------------------------------------------------------------------- %% 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 = {xmlelement, "presence", [{"type", "unavailable"}], [{xmlelement, "status", [], [{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 = {xmlelement, "presence", [{"type", "unavailable"}], []}, 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; _ -> 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) -> ?DEBUG("Send XML on stream = ~p", [lists:flatten(Text)]), (StateData#state.sockmod):send(StateData#state.socket, Text). send_element(StateData, El) -> send_text(StateData, xml:element_to_string(El)). 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} -> {xmlelement, _, _, Els} = SubEl, {auth, ID, Type, get_auth_tags(Els, "", "", "", "")}; _ -> false end. get_auth_tags([{xmlelement, Name, _Attrs, 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}. get_conn_type(StateData) -> case StateData#state.sockmod of ejabberd_http_poll -> http_poll; ejabberd_http_bind -> http_bind; _ -> case (StateData#state.sockmod):get_sockmod(StateData#state.socket) of ejabberd_zlib -> c2s_compressed; tls -> c2s_tls; gen_tcp -> c2s end 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 -> Packet = StateData#state.pres_last, case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {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]), ejabberd_router:route(To, From, Packet) end; Cond2 -> ejabberd_router:route(To, From, {xmlelement, "presence", [], []}); true -> ok end end. presence_update(From, Packet, StateData) -> {xmlelement, _Name, Attrs, _Els} = 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}], 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), presence_broadcast(StateData, From, StateData#state.pres_i, Packet), StateData#state{pres_last = undefined, pres_a = ?SETS:new(), pres_i = ?SETS:new(), pres_invis = false}; "invisible" -> NewState = if not StateData#state.pres_invis -> presence_broadcast(StateData, From, StateData#state.pres_a, Packet), presence_broadcast(StateData, From, StateData#state.pres_i, Packet), S1 = StateData#state{pres_last = undefined, pres_a = ?SETS:new(), pres_i = ?SETS:new(), pres_invis = true}, presence_broadcast_first(From, S1, Packet); true -> StateData end, NewState; "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), update_priority(NewPriority, Packet, StateData), FromUnavail = (StateData#state.pres_last == undefined) or StateData#state.pres_invis, ?DEBUG("from unavail = ~p~n", [FromUnavail]), NewState = if FromUnavail -> ejabberd_hooks:run(user_available_hook, StateData#state.server, [StateData#state.jid]), if NewPriority >= 0 -> resend_offline_messages(StateData), resend_subscription_requests(StateData); true -> ok end, presence_broadcast_first( From, StateData#state{pres_last = Packet, pres_invis = false }, Packet); true -> presence_broadcast_to_trusted(StateData, From, StateData#state.pres_f, StateData#state.pres_a, Packet), if OldPriority < 0, NewPriority >= 0 -> resend_offline_messages(StateData); true -> ok end, StateData#state{pres_last = Packet, pres_invis = false } end, NewState end. presence_track(From, To, Packet, StateData) -> {xmlelement, _Name, Attrs, _Els} = Packet, LTo = jlib:jid_tolower(To), User = StateData#state.user, Server = StateData#state.server, case xml:get_attr_s("type", Attrs) of "unavailable" -> ejabberd_router:route(From, To, Packet), I = remove_element(LTo, StateData#state.pres_i), A = remove_element(LTo, StateData#state.pres_a), StateData#state{pres_i = I, pres_a = A}; "invisible" -> ejabberd_router:route(From, To, Packet), I = ?SETS:add_element(LTo, StateData#state.pres_i), A = remove_element(LTo, StateData#state.pres_a), StateData#state{pres_i = I, pres_a = A}; "subscribe" -> ejabberd_hooks:run(roster_out_subscription, Server, [User, Server, To, subscribe]), ejabberd_router:route(jlib:jid_remove_resource(From), To, Packet), StateData; "subscribed" -> ejabberd_hooks:run(roster_out_subscription, Server, [User, Server, To, subscribed]), ejabberd_router:route(jlib:jid_remove_resource(From), To, Packet), StateData; "unsubscribe" -> ejabberd_hooks:run(roster_out_subscription, Server, [User, Server, To, unsubscribe]), ejabberd_router:route(jlib:jid_remove_resource(From), To, Packet), StateData; "unsubscribed" -> ejabberd_hooks:run(roster_out_subscription, Server, [User, Server, To, unsubscribed]), ejabberd_router:route(jlib:jid_remove_resource(From), To, Packet), StateData; "error" -> ejabberd_router:route(From, To, Packet), StateData; "probe" -> ejabberd_router:route(From, To, Packet), StateData; _ -> case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {From, To, Packet}, out]) of deny -> ok; allow -> ejabberd_router:route(From, To, Packet) end, I = remove_element(LTo, StateData#state.pres_i), A = ?SETS:add_element(LTo, StateData#state.pres_a), StateData#state{pres_i = I, pres_a = A} end. presence_broadcast(StateData, From, JIDSet, Packet) -> lists:foreach(fun(JID) -> FJID = jlib:make_jid(JID), 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}, out]) of deny -> ok; allow -> ejabberd_router:route(From, FJID, Packet) end end, ?SETS:to_list(JIDSet)). presence_broadcast_to_trusted(StateData, From, T, A, Packet) -> lists:foreach( fun(JID) -> case ?SETS:is_element(JID, T) of true -> FJID = jlib:make_jid(JID), 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}, out]) of deny -> ok; allow -> ejabberd_router:route(From, FJID, Packet) end; _ -> ok end end, ?SETS:to_list(A)). presence_broadcast_first(From, StateData, Packet) -> ?SETS:fold(fun(JID, X) -> ejabberd_router:route( From, jlib:make_jid(JID), {xmlelement, "presence", [{"type", "probe"}], []}), X end, [], StateData#state.pres_t), if StateData#state.pres_invis -> StateData; true -> As = ?SETS:fold( fun(JID, A) -> FJID = jlib:make_jid(JID), 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}, out]) of deny -> ok; allow -> ejabberd_router:route(From, FJID, Packet) end, ?SETS:add_element(JID, A) end, StateData#state.pres_a, StateData#state.pres_f), StateData#state{pres_a = As} end. 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 = (not StateData#state.pres_invis) and IsFrom and (not OldIsFrom), Cond2 = (not IsFrom) and OldIsFrom and (?SETS:is_element(LIJID, StateData#state.pres_a) or ?SETS:is_element(LIJID, StateData#state.pres_i)), if Cond1 -> ?DEBUG("C1: ~p~n", [LIJID]), case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {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 = {xmlelement, "presence", [{"type", "unavailable"}], []}, case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, StateData#state.privacy_list, {From, To, PU}, out]) of deny -> ok; allow -> ejabberd_router:route(From, To, PU) end, I = remove_element(LIJID, StateData#state.pres_i), A = remove_element(LIJID, StateData#state.pres_a), StateData#state{pres_i = I, 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}], 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 list_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(#state{user = User, server = Server, privacy_list = PrivList} = StateData) -> case ejabberd_hooks:run_fold(resend_offline_messages_hook, Server, [], [User, Server]) of Rs when list(Rs) -> lists:foreach( fun({route, From, To, {xmlelement, Name, Attrs, Els} = Packet}) -> Pass = case ejabberd_hooks:run_fold( privacy_check_packet, Server, allow, [User, Server, PrivList, {From, To, Packet}, in]) of allow -> true; deny -> false end, if Pass -> Attrs2 = jlib:replace_from_to_attrs( jlib:jid_to_string(From), jlib:jid_to_string(To), Attrs), send_element(StateData, {xmlelement, Name, Attrs2, Els}); 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) -> case jlib:iq_query_info(El) of #iq{} = IQ -> Res = ejabberd_hooks:run_fold(c2s_unauthenticated_iq, StateData#state.server, empty, [StateData#state.server, IQ]), case Res of empty -> % The only reasonable IQ's here are auth and register IQ's % They contain secrets, so don't include subelements to response 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: 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}.