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xmpp.chapril.org-ejabberd
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Multiple REGISTER bindings support

This commit is contained in:
Evgeniy Khramtsov 2014-05-01 15:51:58 +04:00
parent 35faffe7da
commit 6a95422af8
2 changed files with 155 additions and 57 deletions
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6
src/mod_sip_proxy.erl
View File

@ -153,10 +153,10 @@ connect(#sip{hdrs = Hdrs} = Req, Opts) ->
true ->
LUser = jlib:nodeprep(ToURI#uri.user),
LServer = jlib:nameprep(ToURI#uri.host),
case mod_sip_registrar:find_socket(LUser, LServer) of
{ok, SIPSock} ->
case mod_sip_registrar:find_sockets(LUser, LServer) of
[SIPSock|_] ->
{ok, SIPSock};
error ->
[] ->
{error, notfound}
end;
false ->

206
src/mod_sip_registrar.erl
View File

@ -12,7 +12,7 @@
-behaviour(?GEN_SERVER).
%% API
-export([start_link/0, request/2, find_socket/2]).
-export([start_link/0, request/2, find_sockets/2]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
@ -22,11 +22,15 @@
-include("logger.hrl").
-include("esip.hrl").
-record(binding, {socket = #sip_socket{},
call_id = <<"">> :: binary(),
cseq = 0 :: non_neg_integer(),
timestamp = now() :: erlang:timestamp(),
tref = make_ref() :: reference(),
expires = 0 :: non_neg_integer()}).
-record(sip_session, {us = {<<"">>, <<"">>} :: {binary(), binary()},
socket = #sip_socket{},
timestamp = now() :: erlang:timestamp(),
tref = make_ref() :: reference(),
expires = 0 :: non_neg_integer()}).
bindings = [] :: [#binding{}]}).
-record(state, {}).
@ -42,13 +46,24 @@ request(#sip{hdrs = Hdrs} = Req, SIPSock) ->
LServer = jlib:nameprep(S),
{PeerIP, _} = SIPSock#sip_socket.peer,
US = {LUser, LServer},
CallID = esip:get_hdr('call-id', Hdrs),
CSeq = esip:get_hdr('cseq', Hdrs),
Expires = esip:get_hdr('expires', Hdrs, 0),
case esip:get_hdrs('contact', Hdrs) of
[<<"*">>] when Expires == 0 ->
?INFO_MSG("unregister SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
unregister_session(US),
mod_sip:make_response(Req, #sip{type = response, status = 200});
case unregister_session(US, SIPSock, CallID, CSeq) of
ok ->
?INFO_MSG("unregister SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
mod_sip:make_response(
Req, #sip{type = response, status = 200});
{error, Why} ->
{Status, Reason} = make_status(Why),
mod_sip:make_response(
Req, #sip{type = response,
status = Status,
reason = Reason})
end;
[{_, _URI, _Params}|_] = Contacts ->
ContactsWithExpires =
lists:map(
@ -69,40 +84,58 @@ request(#sip{hdrs = Hdrs} = Req, SIPSock) ->
[{Expires1, _}|_] = lists:keysort(1, ContactsWithExpires),
MinExpires = min_expires(),
if Expires1 >= MinExpires ->
?INFO_MSG("register SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
register_session(US, SIPSock, Expires1),
mod_sip:make_response(
Req,
#sip{type = response,
status = 200,
hdrs = [{'contact',
[C || {_, C} <- ContactsWithExpires]}]});
case register_session(US, SIPSock, CallID, CSeq, Expires1) of
ok ->
?INFO_MSG("register SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
mod_sip:make_response(
Req,
#sip{type = response,
status = 200,
hdrs = [{'contact',
[C || {_, C} <- ContactsWithExpires]}]});
{error, Why} ->
{Status, Reason} = make_status(Why),
mod_sip:make_response(
Req, #sip{type = response,
status = Status,
reason = Reason})
end;
Expires1 > 0, Expires1 < MinExpires ->
mod_sip:make_response(
Req, #sip{type = response,
status = 423,
hdrs = [{'min-expires', MinExpires}]});
true ->
?INFO_MSG("unregister SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
unregister_session(US),
mod_sip:make_response(
Req,
#sip{type = response, status = 200,
hdrs = [{'contact',
[C || {_, C} <- ContactsWithExpires]}]})
case unregister_session(US, SIPSock, CallID, CSeq) of
ok ->
?INFO_MSG("unregister SIP session for user ~s@~s from ~s",
[LUser, LServer, inet_parse:ntoa(PeerIP)]),
mod_sip:make_response(
Req,
#sip{type = response, status = 200,
hdrs = [{'contact',
[C || {_, C} <- ContactsWithExpires]}]});
{error, Why} ->
{Status, Reason} = make_status(Why),
mod_sip:make_response(
Req, #sip{type = response,
status = Status,
reason = Reason})
end
end;
[] ->
mod_sip:make_response(Req, #sip{type = response, status = 200});
_ ->
mod_sip:make_response(Req, #sip{type = response, status = 400})
end.
find_socket(U, S) ->
find_sockets(U, S) ->
case mnesia:dirty_read(sip_session, {U, S}) of
[#sip_session{socket = SIPSocket}] ->
{ok, SIPSocket};
[#sip_session{bindings = Bindings}] ->
[Binding#binding.socket || Binding <- Bindings];
[] ->
error
[]
end.
%%%===================================================================
@ -118,8 +151,8 @@ init([]) ->
handle_call({write, Session}, _From, State) ->
Res = write_session(Session),
{reply, Res, State};
handle_call({delete, US}, _From, State) ->
Res = delete_session(US),
handle_call({delete, US, SIPSocket, CallID, CSeq}, _From, State) ->
Res = delete_session(US, SIPSocket, CallID, CSeq),
{reply, Res, State};
handle_call(_Request, _From, State) ->
Reply = ok,
@ -131,13 +164,25 @@ handle_cast(_Msg, State) ->
handle_info({write, Session}, State) ->
write_session(Session),
{noreply, State};
handle_info({delete, US}, State) ->
delete_session(US),
handle_info({delete, US, SIPSocket, CallID, CSeq}, State) ->
delete_session(US, SIPSocket, CallID, CSeq),
{noreply, State};
handle_info({timeout, TRef, US}, State) ->
case mnesia:dirty_read(sip_session, US) of
[#sip_session{tref = TRef}] ->
mnesia:dirty_delete(sip_session, US);
[#sip_session{bindings = Bindings}] ->
case lists:filter(
fun(#binding{tref = TRef1}) when TRef1 == TRef ->
false;
(_) ->
true
end, Bindings) of
[] ->
mnesia:dirty_delete(sip_session, US);
NewBindings ->
mnesia:dirty_write(sip_session,
#sip_session{us = US,
bindings = NewBindings})
end;
[] ->
ok
end,
@ -155,33 +200,68 @@ code_change(_OldVsn, State, _Extra) ->
%%%===================================================================
%%% Internal functions
%%%===================================================================
register_session(US, SIPSocket, Expires) ->
register_session(US, SIPSocket, CallID, CSeq, Expires) ->
Session = #sip_session{us = US,
socket = SIPSocket,
timestamp = now(),
expires = Expires},
bindings = [#binding{socket = SIPSocket,
call_id = CallID,
cseq = CSeq,
timestamp = now(),
expires = Expires}]},
gen_server:call(?MODULE, {write, Session}).
unregister_session(US) ->
gen_server:call(?MODULE, {delete, US}).
unregister_session(US, SIPSocket, CallID, CSeq) ->
Msg = {delete, US, SIPSocket, CallID, CSeq},
gen_server:call(?MODULE, Msg).
write_session(#sip_session{us = US, expires = Expires} = Session) ->
write_session(#sip_session{us = US,
bindings = [#binding{socket = SIPSocket,
call_id = CallID,
expires = Expires,
cseq = CSeq} = Binding]}) ->
case mnesia:dirty_read(sip_session, US) of
[#sip_session{tref = TRef}] ->
erlang:cancel_timer(TRef);
[#sip_session{bindings = Bindings}] ->
case pop_previous_binding(SIPSocket, Bindings) of
{ok, #binding{call_id = CallID, cseq = PrevCSeq}, _}
when PrevCSeq >= CSeq ->
{error, cseq_out_of_order};
{ok, #binding{tref = Tref}, Bindings1} ->
erlang:cancel_timer(Tref),
NewTRef = erlang:start_timer(Expires * 1000, self(), US),
NewBindings = [Binding#binding{tref = NewTRef}|Bindings1],
mnesia:dirty_write(
#sip_session{us = US, bindings = NewBindings});
{error, notfound} ->
NewTRef = erlang:start_timer(Expires * 1000, self(), US),
NewBindings = [Binding#binding{tref = NewTRef}|Bindings],
mnesia:dirty_write(
#sip_session{us = US, bindings = NewBindings})
end;
[] ->
ok
end,
NewTRef = erlang:start_timer(Expires * 1000, self(), US),
mnesia:dirty_write(Session#sip_session{tref = NewTRef}).
NewTRef = erlang:start_timer(Expires * 1000, self(), US),
NewBindings = [Binding#binding{tref = NewTRef}],
mnesia:dirty_write(#sip_session{us = US, bindings = NewBindings})
end.
delete_session(US) ->
delete_session(US, SIPSocket, CallID, CSeq) ->
case mnesia:dirty_read(sip_session, US) of
[#sip_session{tref = TRef}] ->
erlang:cancel_timer(TRef),
mnesia:dirty_delete(sip_session, US);
[#sip_session{bindings = Bindings}] ->
case pop_previous_binding(SIPSocket, Bindings) of
{ok, #binding{call_id = CallID, cseq = PrevCSeq}, _}
when PrevCSeq >= CSeq ->
{error, cseq_out_of_order};
{ok, #binding{tref = TRef}, []} ->
erlang:cancel_timer(TRef),
mnesia:dirty_delete(sip_session, US);
{ok, #binding{tref = TRef}, NewBindings} ->
erlang:cancel_timer(TRef),
mnesia:dirty_write(sip_session,
#sip_session{us = US,
bindings = NewBindings});
{error, notfound} ->
{error, notfound}
end;
[] ->
ok
{error, notfound}
end.
min_expires() ->
@ -194,3 +274,21 @@ to_integer(Bin, Min, Max) ->
_ ->
error
end.
pop_previous_binding(#sip_socket{peer = Peer}, Bindings) ->
case lists:partition(
fun(#binding{socket = #sip_socket{peer = Peer1}}) ->
Peer1 == Peer
end, Bindings) of
{[Binding], RestBindings} ->
{ok, Binding, RestBindings};
_ ->
{error, notfound}
end.
make_status(notfound) ->
{404, esip:reason(404)};
make_status(cseq_out_of_order) ->
{500, <<"CSeq is Out of Order">>};
make_status(_) ->
{500, esip:reason(500)}.