%%%---------------------------------------------------------------------- %%% File : ejabberd_c2s.erl %%% Author : Alexey Shchepin %%% Purpose : Serve C2S connection %%% Created : 16 Nov 2002 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2008 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}). -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/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]). -export([get_state/1]). -include_lib("exmpp/include/exmpp.hrl"). -include("ejabberd.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, streamid, sasl_state, access, shaper, zlib = false, tls = false, tls_required = false, tls_enabled = false, tls_options = [], authenticated = false, jid, user = undefined, server = list_to_binary(?MYNAME), resource = undefined, 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, lang}). %-define(DBGFSM, true). -ifdef(DBGFSM). -define(FSMOPTS, [{debug, [trace]}]). -else. -define(FSMOPTS, [{spawn_opt,[{fullsweep_after,10}]}]). -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). % These are the namespace already declared by the stream opening. This is % used at serialization time. -define(DEFAULT_NS, ?NS_JABBER_CLIENT). -define(PREFIXED_NS, [{?NS_XMPP, ?NS_XMPP_pfx}]). -define(STANZA_ERROR(NS, Condition), exmpp_xml:xmlel_to_xmlelement(exmpp_stanza:error(NS, Condition), [?NS_JABBER_CLIENT], [{?NS_XMPP, "stream"}])). -define(ERR_FEATURE_NOT_IMPLEMENTED(NS), ?STANZA_ERROR(NS, 'feature-not-implemented')). %%%---------------------------------------------------------------------- %%% 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). %%TODO: for debug only get_state(FsmRef) -> gen_fsm:sync_send_all_state_event(FsmRef, get_state, 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), %% Check if IP is blacklisted: case is_ip_blacklisted(IP) of true -> ?INFO_MSG("Connection attempt from blacklisted IP: ~s", [jlib:ip_to_list(IP)]), {stop, normal}; false -> 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} 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, #xmlel{ns = NS} = Opening}, StateData) -> DefaultLang = case ?MYLANG of undefined -> "en"; DL -> DL end, Header = exmpp_stream:opening_reply(Opening, StateData#state.streamid, DefaultLang), case NS of ?NS_XMPP -> ServerB = exmpp_stringprep:nameprep( exmpp_stream:get_receiving_entity(Opening)), Server = binary_to_list(ServerB), case lists:member(Server, ?MYHOSTS) of true -> Lang = exmpp_stream:get_lang(Opening), change_shaper(StateData, exmpp_jid:make_bare_jid(Server)), case exmpp_stream:get_version(Opening) of {1, 0} -> send_element(StateData, Header), 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), SASL_Mechs = [exmpp_server_sasl:feature( 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 -> [exmpp_server_compression:feature(["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 -> [exmpp_server_tls:feature(TLSRequired)]; false -> [] end, Other_Feats = ejabberd_hooks:run_fold( c2s_stream_features, ServerB, [], []), send_element(StateData, exmpp_stream:features( TLSFeature ++ CompressFeature ++ SASL_Mechs ++ Other_Feats)), fsm_next_state(wait_for_feature_request, StateData#state{ server = ServerB, sasl_state = SASLState, lang = Lang}); _ -> case StateData#state.resource of undefined -> send_element( StateData, exmpp_stream:features([ exmpp_server_binding:feature(), exmpp_server_session:feature() ])), fsm_next_state(wait_for_bind, StateData#state{ server = ServerB, lang = Lang}); _ -> send_element( StateData, exmpp_stream:features([])), fsm_next_state(wait_for_session, StateData#state{ server = ServerB, lang = Lang}) end end; _ -> if (not StateData#state.tls_enabled) and StateData#state.tls_required -> send_element(StateData, exmpp_xml:append_child(Header, exmpp_stream:error('policy-violation', "en", "Use of STARTTLS required"))), {stop, normal, StateData}; true -> send_element(StateData, Header), fsm_next_state(wait_for_auth, StateData#state{ server = ServerB, lang = Lang}) end end; _ -> Header2 = exmpp_stream:set_initiating_entity(Header, ?MYNAME), send_element(StateData, exmpp_xml:append_child(Header2, exmpp_stream:error('host-unknown'))), {stop, normal, StateData} end; _ -> Header2 = exmpp_stream:set_initiating_entity(Header, ?MYNAME), send_element(StateData, exmpp_xml:append_child(Header2, exmpp_stream:error('invalid-namespace'))), {stop, normal, StateData} end; wait_for_stream(timeout, StateData) -> {stop, normal, StateData}; wait_for_stream({xmlstreamelement, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_stream({xmlstreamend, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_stream({xmlstreamerror, _}, StateData) -> Header = exmpp_stream:opening_reply(?MYNAME, 'jabber:client', "1.0", "none"), Header1 = exmpp_xml:append_child(Header, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, Header1), {stop, normal, StateData}; wait_for_stream(closed, StateData) -> {stop, normal, StateData}. wait_for_auth({xmlstreamelement, El}, StateData) -> ServerString = binary_to_list(StateData#state.server), case is_auth_packet(El) of {auth, _ID, get, {_U, _, _, _}} -> Fields = case ejabberd_auth:plain_password_required( ServerString) of false -> both; true -> plain end, send_element(StateData, exmpp_server_legacy_auth:fields(El, Fields)), fsm_next_state(wait_for_auth, StateData); {auth, _ID, set, {_U, _P, _D, undefined}} -> Err = exmpp_stanza:error(El#xmlel.ns, 'not-acceptable', {"en", "No resource provided"}), send_element(StateData, exmpp_iq:error(El, Err)), fsm_next_state(wait_for_auth, StateData); {auth, _ID, set, {U, P, D, R}} -> try JID = exmpp_jid:make_jid(U, StateData#state.server, R), UBinary = exmpp_jid:lnode(JID), case acl:match_rule(ServerString, StateData#state.access, JID) of allow -> case ejabberd_auth:check_password_with_authmodule( U, ServerString, P, StateData#state.streamid, D) of {true, AuthModule} -> ?INFO_MSG( "(~w) Accepted legacy authentication for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(JID)]), SID = {now(), self()}, Conn = get_conn_type(StateData), Info = [{ip, StateData#state.ip}, {conn, Conn}, {auth_module, AuthModule}], ejabberd_sm:open_session( SID, exmpp_jid:make_jid(U, StateData#state.server, R), Info), Res = exmpp_server_legacy_auth:success(El), send_element(StateData, Res), change_shaper(StateData, JID), {Fs, Ts} = ejabberd_hooks:run_fold( roster_get_subscription_lists, StateData#state.server, {[], []}, [UBinary, StateData#state.server]), LJID = jlib:short_prepd_bare_jid(JID), Fs1 = [LJID | Fs], Ts1 = [LJID | Ts], PrivList = ejabberd_hooks:run_fold( privacy_get_user_list, StateData#state.server, #userlist{}, [UBinary, StateData#state.server]), fsm_next_state(session_established, StateData#state{ sasl_state = 'undefined', %not used anymore, let the GC work. user = list_to_binary(U), resource = list_to_binary(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}); _ -> ?INFO_MSG( "(~w) Failed legacy authentication for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(JID)]), Res = exmpp_iq:error_without_original(El, 'not-authorized'), send_element(StateData, Res), fsm_next_state(wait_for_auth, StateData) end; _ -> ?INFO_MSG( "(~w) Forbidden legacy authentication for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(JID)]), Res = exmpp_iq:error_without_original(El, 'not-allowed'), send_element(StateData, Res), fsm_next_state(wait_for_auth, StateData) end catch throw:_Exception -> ?INFO_MSG( "(~w) Forbidden legacy authentication for " "username '~s' with resource '~s'", [StateData#state.socket, U, R]), Res1 = exmpp_iq:error_without_original(El, 'jid-malformed'), send_element(StateData, Res1), fsm_next_state(wait_for_auth, StateData) 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_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_auth({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_auth(closed, StateData) -> {stop, normal, StateData}. wait_for_feature_request({xmlstreamelement, #xmlel{ns = NS, name = Name} = El}, StateData) -> 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 {NS, Name} of {?NS_SASL, 'auth'} when not ((SockMod == gen_tcp) and TLSRequired) -> {auth, Mech, ClientIn} = exmpp_server_sasl:next_step(El), case cyrsasl:server_start(StateData#state.sasl_state, Mech, ClientIn) of {ok, Props} -> (StateData#state.sockmod):reset_stream( StateData#state.socket), send_element(StateData, exmpp_server_sasl:success()), U = proplists:get_value(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 = list_to_binary(U) }); {continue, ServerOut, NewSASLState} -> send_element(StateData, exmpp_server_sasl:challenge(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, exmpp_server_sasl:failure(Error)), {next_state, wait_for_feature_request, StateData, ?C2S_OPEN_TIMEOUT}; {error, Error} -> send_element(StateData, exmpp_server_sasl:failure(Error)), fsm_next_state(wait_for_feature_request, StateData) end; {?NS_TLS, 'starttls'} when TLS == true, TLSEnabled == false, SockMod == gen_tcp -> ServerString = binary_to_list(StateData#state.server), TLSOpts = case ejabberd_config:get_local_option( {domain_certfile, ServerString}) of undefined -> StateData#state.tls_options; CertFile -> [{certfile, CertFile} | lists:keydelete( certfile, 1, StateData#state.tls_options)] end, Socket = StateData#state.socket, Proceed = exmpp_xml:node_to_list( exmpp_server_tls:proceed(), [?DEFAULT_NS], ?PREFIXED_NS), TLSSocket = (StateData#state.sockmod):starttls( Socket, TLSOpts, Proceed), 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 exmpp_server_compression:selected_method(El) of undefined -> send_element(StateData, exmpp_server_compression:failure('steup-failed')), fsm_next_state(wait_for_feature_request, StateData); "zlib" -> Socket = StateData#state.socket, ZlibSocket = (StateData#state.sockmod):compress( Socket, exmpp_server_compression:compressed()), fsm_next_state(wait_for_stream, StateData#state{socket = ZlibSocket, streamid = new_id() }); _ -> send_element(StateData, exmpp_server_compression:failure('unsupported-method')), fsm_next_state(wait_for_feature_request, StateData) end; _ -> if (SockMod == gen_tcp) and TLSRequired -> send_element(StateData, exmpp_stream:error( 'policy-violation', "en", "Use of STARTTLS required")), send_element(StateData, exmpp_stream:closing()), {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_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_feature_request({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_feature_request(closed, StateData) -> {stop, normal, StateData}. wait_for_sasl_response({xmlstreamelement, #xmlel{ns = NS, name = Name} = El}, StateData) -> case {NS, Name} of {?NS_SASL, 'response'} -> {response, ClientIn} = exmpp_server_sasl:next_step(El), case cyrsasl:server_step(StateData#state.sasl_state, ClientIn) of {ok, Props} -> (StateData#state.sockmod):reset_stream( StateData#state.socket), send_element(StateData, exmpp_server_sasl:success()), U = proplists:get_value(username, Props), AuthModule = proplists:get_value(auth_module, 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, auth_module = AuthModule, user = list_to_binary(U)}); {continue, ServerOut, NewSASLState} -> send_element(StateData, exmpp_server_sasl:challenge(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, exmpp_server_sasl:failure(Error)), fsm_next_state(wait_for_feature_request, StateData); {error, Error} -> send_element(StateData, exmpp_server_sasl:failure(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_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_sasl_response({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_sasl_response(closed, StateData) -> {stop, normal, StateData}. wait_for_bind({xmlstreamelement, El}, StateData) -> try R = case exmpp_server_binding:wished_resource(El) of undefined -> lists:concat([randoms:get_string() | tuple_to_list(now())]); Resource -> Resource end, JID = exmpp_jid:make_jid(StateData#state.user, StateData#state.server, R), Res = exmpp_server_binding:bind(El, JID), send_element(StateData, Res), fsm_next_state(wait_for_session, StateData#state{resource = exmpp_jid:resource(JID), jid = JID}) catch throw:{stringprep, resourceprep, _, _} -> Err = exmpp_server_binding:error(El, 'bad-request'), send_element(StateData, Err), fsm_next_state(wait_for_bind, StateData); throw:_Exception -> fsm_next_state(wait_for_bind, StateData) end; wait_for_bind(timeout, StateData) -> {stop, normal, StateData}; wait_for_bind({xmlstreamend, _Name}, StateData) -> send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_bind({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_bind(closed, StateData) -> {stop, normal, StateData}. wait_for_session({xmlstreamelement, El}, StateData) -> try ServerString = binary_to_list(StateData#state.server), JID = StateData#state.jid, true = exmpp_server_session:want_establishment(El), case acl:match_rule(ServerString, StateData#state.access, JID) of allow -> ?INFO_MSG("(~w) Opened session for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(JID)]), 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, JID, Info), Res = exmpp_server_session:establish(El), send_element(StateData, Res), change_shaper(StateData, JID), {Fs, Ts} = ejabberd_hooks:run_fold( roster_get_subscription_lists, StateData#state.server, {[], []}, [StateData#state.user, StateData#state.server]), LJID = jlib:short_prepd_bare_jid(JID), Fs1 = [LJID | Fs], Ts1 = [LJID | Ts], PrivList = ejabberd_hooks:run_fold( privacy_get_user_list, StateData#state.server, #userlist{}, [StateData#state.user, StateData#state.server]), fsm_next_state(session_established, StateData#state{ sasl_state = 'undefined', %not used anymore, let the GC work. sid = SID, conn = Conn, pres_f = ?SETS:from_list(Fs1), pres_t = ?SETS:from_list(Ts1), privacy_list = PrivList}); _ -> ejabberd_hooks:run(forbidden_session_hook, StateData#state.server, [JID]), ?INFO_MSG("(~w) Forbidden session for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(JID)]), Err = exmpp_server_session:error(El, 'not-allowed'), send_element(StateData, Err), fsm_next_state(wait_for_session, StateData) end catch _Exception -> fsm_next_state(wait_for_session, StateData) end; wait_for_session(timeout, StateData) -> {stop, normal, StateData}; wait_for_session({xmlstreamend, _Name}, StateData) -> send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_session({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; wait_for_session(closed, StateData) -> {stop, normal, StateData}. session_established({xmlstreamelement, El}, StateData) -> case check_from(El, StateData#state.jid) of 'invalid-from' -> send_element(StateData, exmpp_stream:error('invalid-from')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; _ -> session_established2(El, StateData) end; %% 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_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; session_established({xmlstreamerror, _}, StateData) -> send_element(StateData, exmpp_stream:error('xml-not-well-formed')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; session_established(closed, StateData) -> {stop, normal, StateData}. session_established2(El, StateData) -> try User = StateData#state.user, Server = StateData#state.server, % TODO: check 'from' attribute in stanza FromJID = StateData#state.jid, To = exmpp_stanza:get_recipient(El), ToJID = case To of undefined -> exmpp_jid:jid_to_bare_jid(StateData#state.jid); _ -> exmpp_jid:binary_to_jid(To) end, NewEl = case exmpp_stanza:get_lang(El) of undefined -> case StateData#state.lang of undefined -> El; Lang -> exmpp_stanza:set_lang(El, Lang) end; _ -> El end, NewState = case El of #xmlel{ns = ?NS_JABBER_CLIENT, name = 'presence'} -> PresenceEl = ejabberd_hooks:run_fold( c2s_update_presence, Server, NewEl, [User, Server]), ejabberd_hooks:run( user_send_packet, Server, [FromJID, ToJID, PresenceEl]), case {exmpp_jid:node(ToJID), exmpp_jid:domain(ToJID), exmpp_jid:resource(ToJID)} of {User, Server,undefined} -> ?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; #xmlel{ns = ?NS_JABBER_CLIENT, name = 'iq'} -> case exmpp_iq:xmlel_to_iq(El) of #iq{kind = request, ns = ?NS_PRIVACY} = IQ_Rec -> process_privacy_iq( FromJID, ToJID, IQ_Rec, StateData); _ -> ejabberd_hooks:run( user_send_packet, Server, [FromJID, ToJID, NewEl]), ejabberd_router:route( FromJID, ToJID, NewEl), StateData end; #xmlel{ns = ?NS_JABBER_CLIENT, name = 'message'} -> ejabberd_hooks:run(user_send_packet, Server, [FromJID, ToJID, NewEl]), ejabberd_router:route(FromJID, ToJID, NewEl), StateData; _ -> StateData end, ejabberd_hooks:run(c2s_loop_debug, [{xmlstreamelement, El}]), fsm_next_state(session_established, NewState) catch throw:{stringprep, _, _, _} -> case exmpp_stanza:get_type(El) of <<"error">> -> ok; <<"result">> -> ok; _ -> Err = exmpp_stanza:reply_with_error(El, 'jid-malformed'), send_element(StateData, Err) end, ejabberd_hooks:run(c2s_loop_debug, [{xmlstreamelement, El}]), fsm_next_state(session_established, StateData); throw:Exception -> io:format("SESSION ESTABLISHED: Exception=~p~n", [Exception]), fsm_next_state(session_established, StateData) end. %%---------------------------------------------------------------------- %% 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} %%---------------------------------------------------------------------- %TODO: for debug only handle_sync_event(get_state,_From,StateName,StateData) -> {reply,{StateName, StateData}, StateName, StateData}; handle_sync_event({get_presence}, _From, StateName, StateData) -> User = binary_to_list(StateData#state.user), PresLast = StateData#state.pres_last, Show = case PresLast of undefined -> "unavailable"; _ -> exmpp_presence:get_show(PresLast) end, Status = case PresLast of undefined -> ""; _ -> exmpp_presence:get_status(PresLast) end, Resource = binary_to_list(StateData#state.resource), Reply = {User, Resource, atom_to_list(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) -> % XXX OLD FORMAT: This clause should be removed. send_text(StateData, Text), ejabberd_hooks:run(c2s_loop_debug, [Text]), fsm_next_state(StateName, StateData); handle_info(replaced, _StateName, StateData) -> send_element(StateData, exmpp_stream:error('conflict')), send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData#state{authenticated = replaced}}; handle_info({route, From, To, Packet}, StateName, StateData) -> {Pass, NewAttrs, NewState} = case Packet of #xmlel{attrs = Attrs} when ?IS_PRESENCE(Packet) -> case exmpp_presence:get_type(Packet) of 'probe' -> LFrom = jlib:short_prepd_jid(From), LBFrom = jlib:short_prepd_bare_jid(From), 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' -> LFrom = jlib:short_prepd_jid(From), NewA = remove_element(LFrom, StateData#state.pres_a), {true, Attrs, StateData#state{pres_a = NewA}}; 'invisible' -> Attrs1 = exmpp_stanza:set_type_in_attrs(Attrs, 'unavailable'), {true, 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:short_prepd_jid(From), LBFrom = jlib:short_prepd_bare_jid(From), %% Note contact availability Els = Packet#xmlel.children, case exmpp_presence:get_type(Packet) of 'unavailable' -> mod_caps:clear_caps(From); _ -> ServerString = binary_to_list(StateData#state.server), Caps = mod_caps:read_caps(Els), mod_caps:note_caps(ServerString, From, Caps) end, case ?SETS:is_element( LFrom, StateData#state.pres_a) orelse ?SETS:is_element( LBFrom, StateData#state.pres_a) of true -> {true, Attrs, StateData}; false -> case ?SETS:is_element( LFrom, StateData#state.pres_f) of true -> A = ?SETS:add_element( LFrom, StateData#state.pres_a), {true, Attrs, 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), {true, Attrs, StateData#state{pres_a = A}}; false -> {true, Attrs, StateData} end end end; deny -> {false, Attrs, StateData} end end; #xmlel{name = 'broadcast', attrs = Attrs} -> ?DEBUG("broadcast~n~p~n", [Packet#xmlel.children]), case Packet#xmlel.children of [{item, {U, S, R} = _IJIDShort, ISubscription}] -> IJID = exmpp_jid:make_jid(U, S, R), {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 -> PrivPushEl = exmpp_server_privacy:list_push( StateData#state.jid, PrivListName), send_element(StateData, PrivPushEl), {false, Attrs, StateData#state{privacy_list = NewPL}} end; _ -> {false, Attrs, StateData} end; #xmlel{attrs = Attrs} when ?IS_IQ(Packet) -> case exmpp_iq:is_request(Packet) of true -> case exmpp_iq:get_request(Packet) of #xmlel{ns = ?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, exmpp_iq:xmlel_to_iq(Packet)); [] -> Res = exmpp_iq:error(Packet, 'feature-not-implemented'), ejabberd_router:route(To, From, Res) end, {false, 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 -> {true, Attrs, StateData}; deny -> Res = exmpp_iq:error(Packet, 'feature-not-implemented'), ejabberd_router:route(To, From, Res), {false, Attrs, StateData} end end; false -> {true, Attrs, StateData} end; #xmlel{attrs = Attrs} when ?IS_MESSAGE(Packet) -> 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; #xmlel{attrs = Attrs} -> {true, Attrs, StateData} end, if Pass == exit -> catch send_element(StateData, exmpp_stream:closing()), {stop, normal, StateData}; Pass -> Attrs2 = exmpp_stanza:set_sender_in_attrs(NewAttrs, From), Attrs3 = exmpp_stanza:set_recipient_in_attrs(Attrs2, To), FixedPacket = Packet#xmlel{attrs = Attrs3}, 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(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) -> %%TODO: resource could be 'undefined' if terminate before bind? case StateName of session_established -> case StateData#state.authenticated of replaced -> ?INFO_MSG("(~w) Replaced session for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(StateData#state.jid)]), From = StateData#state.jid, Packet = exmpp_presence:unavailable(), Packet1 = exmpp_presence:set_status(Packet, "Replaced by new connection"), ejabberd_sm:close_session_unset_presence( StateData#state.sid, StateData#state.jid, "Replaced by new connection"), presence_broadcast( StateData, From, StateData#state.pres_a, Packet1), presence_broadcast( StateData, From, StateData#state.pres_i, Packet1); _ -> ?INFO_MSG("(~w) Close session for ~s", [StateData#state.socket, exmpp_jid:jid_to_list(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.jid); _ -> From = StateData#state.jid, Packet = exmpp_presence:unavailable(), ejabberd_sm:close_session_unset_presence( StateData#state.sid, StateData#state.jid, ""), 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(binary_to_list(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, #xmlel{ns = ?NS_XMPP, name = 'stream'} = El) -> send_text(StateData, exmpp_stream:to_iolist(El)); send_element(StateData, El) -> send_text(StateData, exmpp_stanza:to_iolist(El)). new_id() -> randoms:get_string(). is_auth_packet(El) when ?IS_IQ(El) -> case exmpp_iq:xmlel_to_iq(El) of #iq{ns = ?NS_LEGACY_AUTH, kind = 'request'} = IQ_Rec -> Children = exmpp_xml:get_child_elements(IQ_Rec#iq.payload), {auth, IQ_Rec#iq.id, IQ_Rec#iq.type, get_auth_tags(Children , undefined, undefined, undefined, undefined)}; _ -> false end; is_auth_packet(_El) -> false. get_auth_tags([#xmlel{ns = ?NS_LEGACY_AUTH, name = Name, children = Els} | L], U, P, D, R) -> CData = exmpp_xml:get_cdata_from_list_as_list(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):get_sockmod(StateData#state.socket) of gen_tcp -> c2s; tls -> c2s_tls; ejabberd_zlib -> c2s_compressed; ejabberd_http_poll -> http_poll; ejabberd_http_bind -> http_bind; _ -> unknown end. process_presence_probe(From, To, StateData) -> LFrom = jlib:short_prepd_jid(From), LBFrom = jlib:short_prepd_bare_jid(From), 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]), %% Don't route a presence probe to oneself case From == To of false -> ejabberd_router:route(To, From, Packet); true -> ok end end; Cond2 -> Packet = exmpp_presence:available(), ejabberd_router:route(To, From, Packet); true -> ok end end. presence_update(From, Packet, StateData) -> case exmpp_presence:get_type(Packet) of 'unavailable' -> Status = case exmpp_presence:get_status(Packet) of undefined -> <<>>; S -> S 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.jid, 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' -> NewPriority = try exmpp_presence:get_priority(Packet) catch _Exception -> 0 end, update_priority(NewPriority, Packet, StateData), 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 -> try exmpp_presence:get_priority(OldPresence) catch _Exception -> 0 end end, NewPriority = try exmpp_presence:get_priority(Packet) catch _Exception1 -> 0 end, 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) -> LTo = jlib:short_prepd_jid(To), BFrom = exmpp_jid:jid_to_bare_jid(From), case exmpp_presence:get_type(Packet) 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, StateData#state.server, [StateData#state.user, StateData#state.server, To, subscribe]), ejabberd_router:route(BFrom, To, Packet), StateData; 'subscribed' -> ejabberd_hooks:run(roster_out_subscription, StateData#state.server, [StateData#state.user, StateData#state.server, To, subscribed]), ejabberd_router:route(BFrom, To, Packet), StateData; 'unsubscribe' -> ejabberd_hooks:run(roster_out_subscription, StateData#state.server, [StateData#state.user, StateData#state.server, To, unsubscribe]), ejabberd_router:route(BFrom, To, Packet), StateData; 'unsubscribed' -> ejabberd_hooks:run(roster_out_subscription, StateData#state.server, [StateData#state.user, StateData#state.server, To, unsubscribed]), ejabberd_router:route(BFrom, 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({U, S, R}) -> FJID = exmpp_jid:make_jid(U, S, R), 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({U, S, R} = JID) -> case ?SETS:is_element(JID, T) of true -> FJID = exmpp_jid:make_jid(U, S, R), 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) -> Probe = exmpp_presence:probe(), ?SETS:fold(fun({U, S, R}, X) -> FJID = exmpp_jid:make_jid(U, S, R), ejabberd_router:route( From, FJID, Probe), X end, [], StateData#state.pres_t), if StateData#state.pres_invis -> StateData; true -> As = ?SETS:fold( fun({U, S, R} = JID, A) -> FJID = exmpp_jid:make_jid(U, S, R), 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:short_prepd_jid(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 = 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 = exmpp_presence: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}, {auth_module, StateData#state.auth_module}], ejabberd_sm:set_presence(StateData#state.sid, StateData#state.jid, Priority, Packet, Info). process_privacy_iq(From, To, #iq{type = Type, iq_ns = IQ_NS} = IQ_Rec, StateData) -> {Res, NewStateData} = case Type of get -> R = ejabberd_hooks:run_fold( privacy_iq_get, StateData#state.server , {error, ?ERR_FEATURE_NOT_IMPLEMENTED(IQ_NS)}, [From, To, IQ_Rec, StateData#state.privacy_list]), {R, StateData}; set -> case ejabberd_hooks:run_fold( privacy_iq_set, StateData#state.server, {error, ?ERR_FEATURE_NOT_IMPLEMENTED(IQ_NS)}, [From, To, IQ_Rec]) of {result, R, NewPrivList} -> {{result, R}, StateData#state{privacy_list = NewPrivList}}; R -> {R, StateData} end end, IQRes = case Res of {result, []} -> exmpp_iq:result(IQ_Rec); {result, Result} -> exmpp_iq:result(IQ_Rec, Result); {error, Error} -> exmpp_iq:error(IQ_Rec, Error) end, ejabberd_router:route( To, From, exmpp_iq:iq_to_xmlel(IQRes)), NewStateData. resend_offline_messages(#state{user = UserB, server = ServerB, privacy_list = PrivList} = StateData) -> case ejabberd_hooks:run_fold(resend_offline_messages_hook, StateData#state.server, [], [UserB, ServerB]) of Rs when list(Rs) -> lists:foreach( fun({route, From, To, Packet}) -> Pass = case ejabberd_hooks:run_fold( privacy_check_packet, StateData#state.server, allow, [StateData#state.user, StateData#state.server, PrivList, {From, To, Packet}, in]) of allow -> true; deny -> false end, if Pass -> Attrs1 = exmpp_stanza:set_sender_in_attrs( Packet#xmlel.attrs, From), Attrs2 = exmpp_stanza:set_recipient_in_attrs( Attrs1, To), send_element(StateData, Packet#xmlel{attrs = Attrs2}); true -> ok end end, Rs) end. resend_subscription_requests(#state{user = UserB, server = ServerB} = StateData) -> PendingSubscriptions = ejabberd_hooks:run_fold( resend_subscription_requests_hook, StateData#state.server, [], [UserB, ServerB]), lists:foreach(fun(XMLPacket) -> send_element(StateData, XMLPacket) end, PendingSubscriptions). process_unauthenticated_stanza(StateData, El) when ?IS_IQ(El) -> case exmpp_iq:get_kind(El) of request -> IQ_Rec = exmpp_iq:xmlel_to_iq(El), Res = ejabberd_hooks:run_fold(c2s_unauthenticated_iq, StateData#state.server, empty, [StateData#state.server, IQ_Rec, StateData#state.ip]), 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 = exmpp_iq:error_without_original(El, 'service-unavailable'), Res1 = exmpp_stanza:set_sender(ResIQ, exmpp_jid:make_bare_jid(StateData#state.server)), Res2 = exmpp_stanza:remove_recipient(Res1), send_element(StateData, Res2); _ -> send_element(StateData, Res) end; _ -> % Drop any stanza, which isn't an IQ request stanza ok end; process_unauthenticated_stanza(_StateData,_El) -> ok. 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}. %% Used by c2s blacklist plugins 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 exmpp_stanza:get_sender(El) of undefined -> El; {value, SJID} -> try JIDEl = exmpp_jid:parse_jid(SJID), case exmpp_jid:lresource(JIDEl) of undefined -> %% Matching JID: The stanza is ok case exmpp_jid:compare_bare_jids(JIDEl, FromJID) of true -> El; false -> 'invalid-from' end; _ -> %% Matching JID: The stanza is ok case exmpp_jid:compare_jids(JIDEl, FromJID) of true -> El; false -> 'invalid-from' end end catch _:_ -> 'invalid-from' end end.