Chapril/xmpp.chapril.org-ejabberd
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Started code clean-up (EJAB-936)(thanks to Michael Remond)

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SVN Revision: 2318
This commit is contained in:
Badlop 2009-06-16 18:27:35 +00:00
parent a1b84c6fa3
commit b74cb8828b
1 changed files with 129 additions and 162 deletions
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291
src/web/ejabberd_http_bind.erl
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@ -1,10 +1,10 @@
%%%---------------------------------------------------------------------- %%%----------------------------------------------------------------------
%%% File : ejabberd_http_bind.erl %%% File : ejabberd_http_bind.erl
%%% Author : Stefan Strigler <steve@zeank.in-berlin.de> %%% Author : Stefan Strigler <steve@zeank.in-berlin.de>
%%% Purpose : Implements XMPP over BOSH (XEP-0205) (formerly known as %%% Purpose : Implements XMPP over BOSH (XEP-0205) (formerly known as
%%% HTTP Binding) %%% HTTP Binding)
%%% Created : 21 Sep 2005 by Stefan Strigler <steve@zeank.in-berlin.de> %%% Created : 21 Sep 2005 by Stefan Strigler <steve@zeank.in-berlin.de>
%%% Id : $Id: ejabberd_http_bind.erl 953 2009-05-07 10:40:40Z alexey $ %%% Id : $Id: ejabberd_http_bind.erl 958 2009-05-12 14:43:41Z mremond $
%%%---------------------------------------------------------------------- %%%----------------------------------------------------------------------
-module(ejabberd_http_bind). -module(ejabberd_http_bind).
@ -22,7 +22,7 @@
terminate/3, terminate/3,
send/2, send/2,
setopts/2, setopts/2,
sockname/1, sockname/1,
peername/1, peername/1,
controlling_process/2, controlling_process/2,
close/1, close/1,
@ -84,7 +84,7 @@
-define(MAX_WAIT, 3600). % max num of secs to keep a request on hold -define(MAX_WAIT, 3600). % max num of secs to keep a request on hold
-define(MAX_INACTIVITY, 30000). % msecs to wait before terminating -define(MAX_INACTIVITY, 30000). % msecs to wait before terminating
% idle sessions % idle sessions
-define(MAX_PAUSE, 120). % may num of sec a client is allowed to pause -define(MAX_PAUSE, 120). % may num of sec a client is allowed to pause
% the session % the session
-define(CT, {"Content-Type", "text/xml; charset=utf-8"}). -define(CT, {"Content-Type", "text/xml; charset=utf-8"}).
@ -135,6 +135,7 @@ process_request(Data, IP) ->
{ok, {"", Rid, Attrs, Payload}} -> {ok, {"", Rid, Attrs, Payload}} ->
case xml:get_attr_s("to",Attrs) of case xml:get_attr_s("to",Attrs) of
"" -> "" ->
?ERROR_MSG("Session not created (Improper addressing)", []),
{200, ?HEADER, "<body type='terminate' " {200, ?HEADER, "<body type='terminate' "
"condition='improper-addressing' " "condition='improper-addressing' "
"xmlns='" ++ ?NS_HTTP_BIND ++ "'/>"}; "xmlns='" ++ ?NS_HTTP_BIND ++ "'/>"};
@ -152,7 +153,7 @@ process_request(Data, IP) ->
end; end;
{ok, {Sid, Rid, Attrs, Payload1}} -> {ok, {Sid, Rid, Attrs, Payload1}} ->
%% old session %% old session
StreamStart = StreamStart =
case xml:get_attr_s("xmpp:restart",Attrs) of case xml:get_attr_s("xmpp:restart",Attrs) of
"true" -> "true" ->
true; true;
@ -168,38 +169,35 @@ process_request(Data, IP) ->
end, end,
handle_http_put(Sid, Rid, Attrs, Payload2, StreamStart, IP); handle_http_put(Sid, Rid, Attrs, Payload2, StreamStart, IP);
_ -> _ ->
?ERROR_MSG("Received bad request: ~p", [Data]),
{400, ?HEADER, ""} {400, ?HEADER, ""}
end. end.
handle_session_start(Pid, XmppDomain, Sid, Rid, Attrs, Payload, IP) -> handle_session_start(Pid, XmppDomain, Sid, Rid, Attrs, Payload, IP) ->
?DEBUG("got pid: ~p", [Pid]), ?DEBUG("got pid: ~p", [Pid]),
Wait = case Wait = case string:to_integer(xml:get_attr_s("wait",Attrs)) of
string:to_integer(xml:get_attr_s("wait",Attrs))
of
{error, _} -> {error, _} ->
?MAX_WAIT; ?MAX_WAIT;
{CWait, _} -> {CWait, _} ->
if if
(CWait > ?MAX_WAIT) -> (CWait > ?MAX_WAIT) ->
?MAX_WAIT; ?MAX_WAIT;
true -> true ->
CWait CWait
end end
end, end,
Hold = case Hold = case string:to_integer(xml:get_attr_s("hold",Attrs)) of
string:to_integer(xml:get_attr_s("hold",Attrs))
of
{error, _} -> {error, _} ->
(?MAX_REQUESTS - 1); (?MAX_REQUESTS - 1);
{CHold, _} -> {CHold, _} ->
if if
(CHold > (?MAX_REQUESTS - 1)) -> (CHold > (?MAX_REQUESTS - 1)) ->
(?MAX_REQUESTS - 1); (?MAX_REQUESTS - 1);
true -> true ->
CHold CHold
end end
end, end,
Version = Version =
case catch list_to_float( case catch list_to_float(
xml:get_attr_s("ver", Attrs)) of xml:get_attr_s("ver", Attrs)) of
{'EXIT', _} -> 0.0; {'EXIT', _} -> 0.0;
@ -211,7 +209,7 @@ handle_session_start(Pid, XmppDomain, Sid, Rid, Attrs, Payload, IP) ->
mnesia:write( mnesia:write(
#http_bind{id = Sid, #http_bind{id = Sid,
pid = Pid, pid = Pid,
to = {XmppDomain, to = {XmppDomain,
XmppVersion}, XmppVersion},
hold = Hold, hold = Hold,
wait = Wait, wait = Wait,
@ -229,7 +227,7 @@ handle_session_start(Pid, XmppDomain, Sid, Rid, Attrs, Payload, IP) ->
%% Returns: {ok, StateName, StateData} | %% Returns: {ok, StateName, StateData} |
%% {ok, StateName, StateData, Timeout} | %% {ok, StateName, StateData, Timeout} |
%% ignore | %% ignore |
%% {stop, StopReason} %% {stop, StopReason}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
init([Sid, Key, IP]) -> init([Sid, Key, IP]) ->
?DEBUG("started: ~p", [{Sid, Key, IP}]), ?DEBUG("started: ~p", [{Sid, Key, IP}]),
@ -255,7 +253,7 @@ init([Sid, Key, IP]) ->
%% Func: StateName/2 %% Func: StateName/2
%% Returns: {next_state, NextStateName, NextStateData} | %% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} | %% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} %% {stop, Reason, NewStateData}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
@ -266,7 +264,7 @@ init([Sid, Key, IP]) ->
%% {reply, Reply, NextStateName, NextStateData} | %% {reply, Reply, NextStateName, NextStateData} |
%% {reply, Reply, NextStateName, NextStateData, Timeout} | %% {reply, Reply, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} | %% {stop, Reason, NewStateData} |
%% {stop, Reason, Reply, NewStateData} %% {stop, Reason, Reply, NewStateData}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
%state_name(Event, From, StateData) -> %state_name(Event, From, StateData) ->
% Reply = ok, % Reply = ok,
@ -276,7 +274,7 @@ init([Sid, Key, IP]) ->
%% Func: handle_event/3 %% Func: handle_event/3
%% Returns: {next_state, NextStateName, NextStateData} | %% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} | %% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} %% {stop, Reason, NewStateData}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
handle_event({activate, From}, StateName, StateData) -> handle_event({activate, From}, StateName, StateData) ->
case StateData#state.input of case StateData#state.input of
@ -302,19 +300,14 @@ handle_event(_Event, StateName, StateData) ->
%% {reply, Reply, NextStateName, NextStateData} | %% {reply, Reply, NextStateName, NextStateData} |
%% {reply, Reply, NextStateName, NextStateData, Timeout} | %% {reply, Reply, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} | %% {stop, Reason, NewStateData} |
%% {stop, Reason, Reply, NewStateData} %% {stop, Reason, Reply, NewStateData}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
handle_sync_event({send, Packet}, _From, StateName, StateData) -> handle_sync_event({send, Packet}, _From, StateName, StateData) ->
Output = [StateData#state.output | Packet], Output = [StateData#state.output | Packet],
if if
StateData#state.http_receiver /= undefined -> StateData#state.http_receiver /= undefined ->
if cancel_timer(StateData#state.timer),
StateData#state.timer /= undefined -> Timer = if
cancel_timer(StateData#state.timer);
true ->
ok
end,
Timer = if
StateData#state.pause > 0 -> StateData#state.pause > 0 ->
erlang:start_timer( erlang:start_timer(
StateData#state.pause*1000, self(), []); StateData#state.pause*1000, self(), []);
@ -329,12 +322,7 @@ handle_sync_event({send, Packet}, _From, StateName, StateData) ->
{ok, Output} {ok, Output}
end, end,
gen_fsm:reply(StateData#state.http_receiver, HTTPReply), gen_fsm:reply(StateData#state.http_receiver, HTTPReply),
if cancel_timer(StateData#state.wait_timer),
StateData#state.wait_timer /= undefined ->
cancel_timer(StateData#state.wait_timer);
true ->
ok
end,
Reply = ok, Reply = ok,
{reply, Reply, StateName, {reply, Reply, StateName,
StateData#state{output = [], StateData#state{output = [],
@ -354,9 +342,9 @@ handle_sync_event(stop, _From, _StateName, StateData) ->
handle_sync_event({http_put, Rid, Attrs, _Payload, Hold, _StreamTo, _IP}=Request, handle_sync_event({http_put, Rid, Attrs, _Payload, Hold, _StreamTo, _IP}=Request,
_From, StateName, StateData) -> _From, StateName, StateData) ->
%% Check if Rid valid %% Check if Rid valid
RidAllow = RidAllow =
case StateData#state.rid of case StateData#state.rid of
none -> none ->
%% First request - nothing saved so far %% First request - nothing saved so far
{true, 0}; {true, 0};
OldRid -> OldRid ->
@ -375,17 +363,17 @@ handle_sync_event({http_put, Rid, Attrs, _Payload, Hold, _StreamTo, _IP}=Request
{true, 0} {true, 0}
end; end;
%% We have missed packets, we need to cached it to process it later on: %% We have missed packets, we need to cached it to process it later on:
(OldRid < Rid) and (OldRid < Rid) and
(Rid =< (OldRid + Hold + 1)) -> (Rid =< (OldRid + Hold + 1)) ->
buffer; buffer;
(Rid =< OldRid) and (Rid =< OldRid) and
(Rid > OldRid - Hold - 1) -> (Rid > OldRid - Hold - 1) ->
repeat; repeat;
true -> true ->
false false
end end
end, end,
%% Check if Rid is in sequence or out of sequence: %% Check if Rid is in sequence or out of sequence:
case RidAllow of case RidAllow of
buffer -> buffer ->
@ -409,19 +397,14 @@ handle_sync_event({http_get, Rid, Wait, Hold}, From, StateName, StateData) ->
true -> true ->
ok ok
end, end,
if cancel_timer(StateData#state.wait_timer),
StateData#state.wait_timer /= undefined ->
cancel_timer(StateData#state.wait_timer);
true ->
ok
end,
{TMegSec, TSec, TMSec} = now(), {TMegSec, TSec, TMSec} = now(),
TNow = (TMegSec * 1000000 + TSec) * 1000000 + TMSec, TNow = (TMegSec * 1000000 + TSec) * 1000000 + TMSec,
if if
(Hold > 0) and (Hold > 0) and
(StateData#state.output == "") and (StateData#state.output == "") and
((TNow - StateData#state.ctime) < (Wait*1000*1000)) and ((TNow - StateData#state.ctime) < (Wait*1000*1000)) and
(StateData#state.rid == Rid) and (StateData#state.rid == Rid) and
(StateData#state.input /= "cancel") and (StateData#state.input /= "cancel") and
(StateData#state.pause == 0) -> (StateData#state.pause == 0) ->
WaitTimer = erlang:start_timer(Wait * 1000, self(), []), WaitTimer = erlang:start_timer(Wait * 1000, self(), []),
@ -430,13 +413,8 @@ handle_sync_event({http_get, Rid, Wait, Hold}, From, StateName, StateData) ->
wait_timer = WaitTimer, wait_timer = WaitTimer,
timer = undefined}}; timer = undefined}};
(StateData#state.input == "cancel") -> (StateData#state.input == "cancel") ->
if cancel_timer(StateData#state.timer),
StateData#state.timer /= undefined -> Timer = if
cancel_timer(StateData#state.timer);
true ->
ok
end,
Timer = if
StateData#state.pause > 0 -> StateData#state.pause > 0 ->
erlang:start_timer( erlang:start_timer(
StateData#state.pause*1000, self(), []); StateData#state.pause*1000, self(), []);
@ -451,13 +429,8 @@ handle_sync_event({http_get, Rid, Wait, Hold}, From, StateName, StateData) ->
wait_timer = undefined, wait_timer = undefined,
timer = Timer}}; timer = Timer}};
true -> true ->
if cancel_timer(StateData#state.timer),
StateData#state.timer /= undefined -> Timer = if
cancel_timer(StateData#state.timer);
true ->
ok
end,
Timer = if
StateData#state.pause > 0 -> StateData#state.pause > 0 ->
erlang:start_timer( erlang:start_timer(
StateData#state.pause*1000, self(), []); StateData#state.pause*1000, self(), []);
@ -476,9 +449,9 @@ handle_sync_event({http_get, Rid, Wait, Hold}, From, StateName, StateData) ->
key=StateData#state.key, key=StateData#state.key,
in=StateData#state.input, in=StateData#state.input,
out=StateData#state.output out=StateData#state.output
} | } |
[El || El <- StateData#state.req_list, [El || El <- StateData#state.req_list,
El#hbr.rid /= Rid ] El#hbr.rid /= Rid ]
], ],
{reply, Reply, StateName, StateData#state{ {reply, Reply, StateName, StateData#state{
input = "", input = "",
@ -504,24 +477,19 @@ code_change(_OldVsn, StateName, StateData, _Extra) ->
%% Func: handle_info/3 %% Func: handle_info/3
%% Returns: {next_state, NextStateName, NextStateData} | %% Returns: {next_state, NextStateName, NextStateData} |
%% {next_state, NextStateName, NextStateData, Timeout} | %% {next_state, NextStateName, NextStateData, Timeout} |
%% {stop, Reason, NewStateData} %% {stop, Reason, NewStateData}
%%---------------------------------------------------------------------- %%----------------------------------------------------------------------
handle_info({timeout, Timer, _}, _StateName, handle_info({timeout, Timer, _}, _StateName,
#state{timer = Timer} = StateData) -> #state{timer = Timer} = StateData) ->
?DEBUG("ding dong", []), ?DEBUG("Session timeout. Closing the HTTP bind Session.", []),
{stop, normal, StateData}; {stop, normal, StateData};
handle_info({timeout, WaitTimer, _}, StateName, handle_info({timeout, WaitTimer, _}, StateName,
#state{wait_timer = WaitTimer} = StateData) -> #state{wait_timer = WaitTimer} = StateData) ->
if if
StateData#state.http_receiver /= undefined -> StateData#state.http_receiver /= undefined ->
if cancel_timer(StateData#state.timer),
StateData#state.timer /= undefined -> Timer = if
cancel_timer(StateData#state.timer);
true ->
ok
end,
Timer = if
StateData#state.pause > 0 -> StateData#state.pause > 0 ->
erlang:start_timer( erlang:start_timer(
StateData#state.pause*1000, self(), []); StateData#state.pause*1000, self(), []);
@ -580,7 +548,7 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
NewKey = xml:get_attr_s("newkey", Attrs), NewKey = xml:get_attr_s("newkey", Attrs),
KeyAllow = KeyAllow =
case RidAllow of case RidAllow of
repeat -> repeat ->
true; true;
false -> false ->
false; false;
@ -602,14 +570,14 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
end, end,
{TMegSec, TSec, TMSec} = now(), {TMegSec, TSec, TMSec} = now(),
TNow = (TMegSec * 1000000 + TSec) * 1000000 + TMSec, TNow = (TMegSec * 1000000 + TSec) * 1000000 + TMSec,
LastPoll = if LastPoll = if
Payload == "" -> Payload == "" ->
TNow; TNow;
true -> true ->
0 0
end, end,
if if
(Payload == "") and (Payload == "") and
(Hold == 0) and (Hold == 0) and
(TNow - StateData#state.last_poll < ?MIN_POLLING) -> (TNow - StateData#state.last_poll < ?MIN_POLLING) ->
Reply = {error, polling_too_frequently}, Reply = {error, polling_too_frequently},
@ -622,7 +590,7 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
repeat -> repeat ->
?DEBUG("REPEATING ~p", [Rid]), ?DEBUG("REPEATING ~p", [Rid]),
Reply = case [El#hbr.out || Reply = case [El#hbr.out ||
El <- StateData#state.req_list, El <- StateData#state.req_list,
El#hbr.rid == Rid] of El#hbr.rid == Rid] of
[] -> [] ->
{error, not_exists}; {error, not_exists};
@ -631,10 +599,10 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
[Out | _XS] -> [Out | _XS] ->
{repeat, Out} {repeat, Out}
end, end,
{reply, Reply, StateName, {reply, Reply, StateName,
StateData#state{input = "cancel", last_poll = LastPoll}}; StateData#state{input = "cancel", last_poll = LastPoll}};
{true, Pause} -> {true, Pause} ->
SaveKey = if SaveKey = if
NewKey == "" -> NewKey == "" ->
Key; Key;
true -> true ->
@ -647,20 +615,15 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
key=StateData#state.key, key=StateData#state.key,
in=StateData#state.input, in=StateData#state.input,
out=StateData#state.output out=StateData#state.output
} | } |
[El || El <- StateData#state.req_list, [El || El <- StateData#state.req_list,
El#hbr.rid < Rid, El#hbr.rid < Rid,
El#hbr.rid > (Rid - 1 - Hold)] El#hbr.rid > (Rid - 1 - Hold)]
], ],
?DEBUG("reqlist: ~p", [ReqList]), ?DEBUG("reqlist: ~p", [ReqList]),
%% setup next timer %% setup next timer
if cancel_timer(StateData#state.timer),
StateData#state.timer /= undefined ->
cancel_timer(StateData#state.timer);
true ->
ok
end,
Timer = if Timer = if
Pause > 0 -> Pause > 0 ->
erlang:start_timer( erlang:start_timer(
@ -673,7 +636,7 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
false -> false ->
Input = Payload ++ [StateData#state.input], Input = Payload ++ [StateData#state.input],
Reply = ok, Reply = ok,
process_buffered_request(Reply, StateName, process_buffered_request(Reply, StateName,
StateData#state{input = Input, StateData#state{input = Input,
rid = Rid, rid = Rid,
key = SaveKey, key = SaveKey,
@ -685,18 +648,18 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
ip = IP ip = IP
}); });
{Receiver, _Tag} -> {Receiver, _Tag} ->
SendPacket = SendPacket =
case StreamTo of case StreamTo of
{To, ""} -> {To, ""} ->
["<stream:stream to='", To, "' " ["<stream:stream to='", To, "' "
"xmlns='"++?NS_CLIENT++"' " "xmlns='"++?NS_CLIENT++"' "
"xmlns:stream='"++?NS_STREAM++"'>"] "xmlns:stream='"++?NS_STREAM++"'>"]
++ Payload; ++ Payload;
{To, Version} -> {To, Version} ->
["<stream:stream to='", To, "' " ["<stream:stream to='", To, "' "
"xmlns='"++?NS_CLIENT++"' " "xmlns='"++?NS_CLIENT++"' "
"version='", Version, "' " "version='", Version, "' "
"xmlns:stream='"++?NS_STREAM++"'>"] "xmlns:stream='"++?NS_STREAM++"'>"]
++ Payload; ++ Payload;
_ -> _ ->
Payload Payload
@ -706,7 +669,7 @@ process_http_put({http_put, Rid, Attrs, Payload, Hold, StreamTo, IP},
Receiver ! {tcp, StateData#state.socket, Receiver ! {tcp, StateData#state.socket,
list_to_binary(SendPacket)}, list_to_binary(SendPacket)},
Reply = ok, Reply = ok,
process_buffered_request(Reply, StateName, process_buffered_request(Reply, StateName,
StateData#state{waiting_input = false, StateData#state{waiting_input = false,
last_receiver = Receiver, last_receiver = Receiver,
input = "", input = "",
@ -743,13 +706,13 @@ process_buffered_request(Reply, StateName, StateData) ->
handle_http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) -> handle_http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) ->
case http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) of case http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) of
{error, not_exists} -> {error, not_exists} ->
?DEBUG("no session associated with sid: ~p", [Sid]), ?ERROR_MSG("no session associated with sid: ~p", [Sid]),
{404, ?HEADER, ""}; {404, ?HEADER, ""};
{{error, Reason}, Sess} -> {{error, Reason}, Sess} ->
?ERROR_MSG("Error on HTTP put. Reason: ~p", [Reason]),
handle_http_put_error(Reason, Sess); handle_http_put_error(Reason, Sess);
{{repeat, OutPacket}, Sess} -> {{repeat, OutPacket}, Sess} ->
?DEBUG("http_put said 'repeat!' ...~nOutPacket: ~p", ?DEBUG("http_put said 'repeat!' ...~nOutPacket: ~p", [OutPacket]),
[OutPacket]),
send_outpacket(Sess, OutPacket); send_outpacket(Sess, OutPacket);
{ok, Sess} -> {ok, Sess} ->
prepare_response(Sess, Rid, Attrs, StreamStart) prepare_response(Sess, Rid, Attrs, StreamStart)
@ -761,7 +724,7 @@ http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) ->
[] -> [] ->
{error, not_exists}; {error, not_exists};
[#http_bind{pid = FsmRef, hold=Hold, to={To, StreamVersion}}=Sess] -> [#http_bind{pid = FsmRef, hold=Hold, to={To, StreamVersion}}=Sess] ->
NewStream = NewStream =
case StreamStart of case StreamStart of
true -> true ->
{To, StreamVersion}; {To, StreamVersion};
@ -772,26 +735,26 @@ http_put(Sid, Rid, Attrs, Payload, StreamStart, IP) ->
FsmRef, {http_put, Rid, Attrs, Payload, Hold, NewStream, IP}), Sess} FsmRef, {http_put, Rid, Attrs, Payload, Hold, NewStream, IP}), Sess}
end. end.
handle_http_put_error(Reason, #http_bind{pid=FsmRef, version=Version}) handle_http_put_error(Reason, #http_bind{pid=FsmRef, version=Version})
when Version >= 0 -> when Version >= 0 ->
gen_fsm:sync_send_all_state_event(FsmRef,stop), gen_fsm:sync_send_all_state_event(FsmRef,stop),
case Reason of case Reason of
not_exists -> not_exists ->
{200, ?HEADER, {200, ?HEADER,
xml:element_to_string( xml:element_to_string(
{xmlelement, "body", {xmlelement, "body",
[{"xmlns", ?NS_HTTP_BIND}, [{"xmlns", ?NS_HTTP_BIND},
{"type", "terminate"}, {"type", "terminate"},
{"condition", "item-not-found"}], []})}; {"condition", "item-not-found"}], []})};
bad_key -> bad_key ->
{200, ?HEADER, {200, ?HEADER,
xml:element_to_string( xml:element_to_string(
{xmlelement, "body", {xmlelement, "body",
[{"xmlns", ?NS_HTTP_BIND}, [{"xmlns", ?NS_HTTP_BIND},
{"type", "terminate"}, {"type", "terminate"},
{"condition", "item-not-found"}], []})}; {"condition", "item-not-found"}], []})};
polling_too_frequently -> polling_too_frequently ->
{200, ?HEADER, {200, ?HEADER,
xml:element_to_string( xml:element_to_string(
{xmlelement, "body", {xmlelement, "body",
[{"xmlns", ?NS_HTTP_BIND}, [{"xmlns", ?NS_HTTP_BIND},
@ -800,19 +763,21 @@ handle_http_put_error(Reason, #http_bind{pid=FsmRef, version=Version})
end; end;
handle_http_put_error(Reason, #http_bind{pid=FsmRef}) -> handle_http_put_error(Reason, #http_bind{pid=FsmRef}) ->
gen_fsm:sync_send_all_state_event(FsmRef,stop), gen_fsm:sync_send_all_state_event(FsmRef,stop),
case Reason of case Reason of
not_exists -> %% bad rid not_exists -> %% bad rid
?ERROR_MSG("Closing HTTP bind session (Bad rid).", []),
{404, ?HEADER, ""}; {404, ?HEADER, ""};
bad_key -> bad_key ->
?ERROR_MSG("Closing HTTP bind session (Bad key).", []),
{404, ?HEADER, ""}; {404, ?HEADER, ""};
polling_too_frequently -> polling_too_frequently ->
{403, ?HEADER, ""} ?ERROR_MSG("Closing HTTP bind session (User polling too frequently).", []),
{403, ?HEADER, ""}
end. end.
prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
Rid, _, StreamStart) -> Rid, _, StreamStart) ->
receive after 100 -> ok end, receive after 100 -> ok end, %% TODO: Why is this needed. Argh. Bad programming practice.
case catch http_get(Sess, Rid) of case catch http_get(Sess, Rid) of
{ok, cancel} -> {ok, cancel} ->
%% actually it would be better if we could completely %% actually it would be better if we could completely
@ -829,7 +794,7 @@ prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
false -> false ->
send_outpacket(Sess, OutPacket); send_outpacket(Sess, OutPacket);
true -> true ->
OutEls = OutEls =
case xml_stream:parse_element( case xml_stream:parse_element(
OutPacket++"</stream:stream>") of OutPacket++"</stream:stream>") of
El when element(1, El) == xmlelement -> El when element(1, El) == xmlelement ->
@ -842,14 +807,14 @@ prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
case Els of case Els of
[] -> [] ->
[]; [];
[{xmlelement, "stream:features", [{xmlelement, "stream:features",
StreamAttribs, StreamEls} StreamAttribs, StreamEls}
| StreamTail] -> | StreamTail] ->
[{xmlelement, "stream:features", [{xmlelement, "stream:features",
[{"xmlns:stream", [{"xmlns:stream",
?NS_STREAM} ?NS_STREAM}
] ]
++ StreamAttribs, ++ StreamAttribs,
StreamEls StreamEls
}] ++ StreamTail; }] ++ StreamTail;
Xml -> Xml ->
@ -868,11 +833,11 @@ prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
"condition='host-unknown' " "condition='host-unknown' "
"xmlns='"++?NS_HTTP_BIND++"'/>"}; "xmlns='"++?NS_HTTP_BIND++"'/>"};
true -> true ->
BOSH_attribs = BOSH_attribs =
[{"authid", AuthID}, [{"authid", AuthID},
{"xmlns:xmpp", ?NS_BOSH}, {"xmlns:xmpp", ?NS_BOSH},
{"xmlns:stream", ?NS_STREAM}] ++ {"xmlns:stream", ?NS_STREAM}] ++
case OutEls of case OutEls of
[] -> [] ->
[]; [];
_ -> _ ->
@ -887,12 +852,12 @@ prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold, to=To}=Sess,
{"sid", Sid}, {"sid", Sid},
{"wait", integer_to_list(Wait)}, {"wait", integer_to_list(Wait)},
{"requests", integer_to_list(Hold+1)}, {"requests", integer_to_list(Hold+1)},
{"inactivity", {"inactivity",
integer_to_list( integer_to_list(
trunc(MaxInactivity/1000))}, trunc(MaxInactivity/1000))},
{"maxpause", {"maxpause",
integer_to_list(?MAX_PAUSE)}, integer_to_list(?MAX_PAUSE)},
{"polling", {"polling",
integer_to_list( integer_to_list(
trunc(?MIN_POLLING/1000000))}, trunc(?MIN_POLLING/1000000))},
{"ver", ?BOSH_VERSION}, {"ver", ?BOSH_VERSION},
@ -919,9 +884,9 @@ send_outpacket(#http_bind{pid = FsmRef}, OutPacket) ->
gen_fsm:sync_send_all_state_event(FsmRef,stop), gen_fsm:sync_send_all_state_event(FsmRef,stop),
{200, ?HEADER, "<body xmlns='"++?NS_HTTP_BIND++"'/>"}; {200, ?HEADER, "<body xmlns='"++?NS_HTTP_BIND++"'/>"};
_ -> _ ->
case xml_stream:parse_element("<body>" case xml_stream:parse_element("<body>"
++ OutPacket ++ OutPacket
++ "</body>") ++ "</body>")
of of
El when element(1, El) == xmlelement -> El when element(1, El) == xmlelement ->
{xmlelement, _, _, OEls} = El, {xmlelement, _, _, OEls} = El,
@ -949,18 +914,18 @@ send_outpacket(#http_bind{pid = FsmRef}, OutPacket) ->
case SEls of case SEls of
[] -> [] ->
[]; [];
[{xmlelement, [{xmlelement,
"stream:features", "stream:features",
StreamAttribs, StreamEls} | StreamAttribs, StreamEls} |
StreamTail] -> StreamTail] ->
TypedTail = TypedTail =
[check_default_xmlns(OEl) || [check_default_xmlns(OEl) ||
OEl <- StreamTail], OEl <- StreamTail],
[{xmlelement, [{xmlelement,
"stream:features", "stream:features",
[{"xmlns:stream", [{"xmlns:stream",
?NS_STREAM}] ++ ?NS_STREAM}] ++
StreamAttribs, StreamEls}] ++ StreamAttribs, StreamEls}] ++
TypedTail; TypedTail;
Xml -> Xml ->
Xml Xml
@ -971,7 +936,7 @@ send_outpacket(#http_bind{pid = FsmRef}, OutPacket) ->
end, end,
if if
StreamError -> StreamError ->
StreamErrCond = StreamErrCond =
case xml_stream:parse_element( case xml_stream:parse_element(
"<stream:stream>" ++ OutPacket) of "<stream:stream>" ++ OutPacket) of
El when element(1, El) == xmlelement -> El when element(1, El) == xmlelement ->
@ -1013,14 +978,13 @@ send_outpacket(#http_bind{pid = FsmRef}, OutPacket) ->
end. end.
parse_request(Data) -> parse_request(Data) ->
?DEBUG("--- incoming data --- ~n~s~n --- END --- ", ?DEBUG("--- incoming data --- ~n~s~n --- END --- ", [Data]),
[Data]),
case xml_stream:parse_element(Data) of case xml_stream:parse_element(Data) of
El when element(1, El) == xmlelement -> El when element(1, El) == xmlelement ->
{xmlelement, Name, Attrs, Els} = El, {xmlelement, Name, Attrs, Els} = El,
Xmlns = xml:get_attr_s("xmlns",Attrs), Xmlns = xml:get_attr_s("xmlns",Attrs),
if if
Name /= "body" -> Name /= "body" ->
{error, bad_request}; {error, bad_request};
Xmlns /= ?NS_HTTP_BIND -> Xmlns /= ?NS_HTTP_BIND ->
{error, bad_request}; {error, bad_request};
@ -1029,29 +993,32 @@ parse_request(Data) ->
{'EXIT', _} -> {'EXIT', _} ->
{error, bad_request}; {error, bad_request};
Rid -> Rid ->
FixedEls = %% I guess this is to remove XMLCDATA:
FixedEls =
lists:filter( lists:filter(
fun(I) -> fun(I) ->
case I of case I of
{xmlelement, _, _, _} -> {xmlelement, _, _, _} ->
true; true;
_ -> _ ->
false false
end end
end, Els), end, Els),
lists:map( %% MR: I commented this code, because it is not used.
fun(E) -> %% lists:map(
EXmlns = xml:get_tag_attr_s("xmlns",E), %% fun(E) ->
if %% EXmlns = xml:get_tag_attr_s("xmlns",E),
EXmlns == ?NS_CLIENT -> %% if
remove_tag_attr("xmlns",E); %% EXmlns == ?NS_CLIENT ->
true -> %% remove_tag_attr("xmlns",E);
ok %% true ->
end %% ok
end, FixedEls), %% end
Payload = [xml:element_to_string(E) || %% end, FixedEls),
E <- FixedEls], Payload = [xml:element_to_string(E) || E <- FixedEls],
Sid = xml:get_attr_s("sid",Attrs), Sid = xml:get_attr_s("sid",Attrs),
%% MR: I do not think we need to extract
%% Sid. We should have it somewhere else:
{ok, {Sid, Rid, Attrs, Payload}} {ok, {Sid, Rid, Attrs, Payload}}
end end
end; end;
@ -1059,6 +1026,9 @@ parse_request(Data) ->
{error, bad_request} {error, bad_request}
end. end.
%% Cancel timer and empty message queue.
cancel_timer(undefined) ->
ok;
cancel_timer(Timer) -> cancel_timer(Timer) ->
erlang:cancel_timer(Timer), erlang:cancel_timer(Timer),
receive receive
@ -1068,6 +1038,7 @@ cancel_timer(Timer) ->
ok ok
end. end.
%% TODO: Use tail recursion and list reverse ?
elements_to_string([]) -> elements_to_string([]) ->
[]; [];
elements_to_string([El | Els]) -> elements_to_string([El | Els]) ->
@ -1085,24 +1056,20 @@ get_max_inactivity({Host, _}, Default) ->
get_max_inactivity(_, Default) -> get_max_inactivity(_, Default) ->
Default. Default.
remove_tag_attr(Attr, {xmlelement, Name, Attrs, Els}) ->
Attrs1 = lists:keydelete(Attr, 1, Attrs),
{xmlelement, Name, Attrs1, Els};
remove_tag_attr(Attr, El) -> remove_tag_attr(Attr, El) ->
case El of El.
{xmlelement, Name, Attrs, Els} ->
Attrs1 = lists:keydelete(Attr, 1, Attrs),
{xmlelement, Name, Attrs1, Els};
_ ->
El
end.
check_default_xmlns({xmlelement, Name, Attrs, Els} = El) -> check_default_xmlns({xmlelement, Name, Attrs, Els} = El) ->
EXmlns = xml:get_tag_attr_s("xmlns", El), case xml:get_tag_attr_s("xmlns", El) of
if "" -> {xmlelement, Name, [{"xmlns", ?NS_CLIENT} | Attrs], Els};
EXmlns == "" -> _ -> El
{xmlelement, Name, [{"xmlns", ?NS_CLIENT} | Attrs], Els};
true ->
El
end. end.
%% Check that mod_http_bind has been defined in config file.
%% Print a warning in log file if this is not the case.
check_bind_module(XmppDomain) -> check_bind_module(XmppDomain) ->
case gen_mod:is_loaded(XmppDomain, mod_http_bind) of case gen_mod:is_loaded(XmppDomain, mod_http_bind) of
true -> ok; true -> ok;