mirror of
https://github.com/processone/ejabberd.git
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242 lines
7.8 KiB
Erlang
242 lines
7.8 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : ejabberd_frontend_socket.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Frontend socket with zlib and TLS support library
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%%% Created : 23 Aug 2006 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2013 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_frontend_socket).
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-author('alexey@process-one.net').
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-behaviour(gen_server).
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%% API
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-export([start/4, start_link/5, starttls/2, starttls/3,
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compress/1, compress/2, reset_stream/1, send/2,
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change_shaper/2, monitor/1, get_sockmod/1,
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get_peer_certificate/1, get_verify_result/1, close/1,
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setopts/2, change_controller/2, sockname/1,
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peername/1]).
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%connect/3,
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%% gen_server callbacks
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-export([init/1, handle_call/3, handle_cast/2,
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handle_info/2, terminate/2, code_change/3]).
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-record(socket_state, {sockmod, socket, receiver}).
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-define(HIBERNATE_TIMEOUT, 90000).
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start_link(Module, SockMod, Socket, Opts, Receiver) ->
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gen_server:start_link(?MODULE,
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[Module, SockMod, Socket, Opts, Receiver], []).
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start(Module, SockMod, Socket, Opts) ->
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case Module:socket_type() of
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xml_stream ->
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MaxStanzaSize = case lists:keysearch(max_stanza_size, 1,
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Opts)
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of
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{value, {_, Size}} -> Size;
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_ -> infinity
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end,
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Receiver = ejabberd_receiver:start(Socket, SockMod,
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none, MaxStanzaSize),
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case SockMod:controlling_process(Socket, Receiver) of
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ok -> ok;
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{error, _Reason} -> SockMod:close(Socket)
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end,
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supervisor:start_child(ejabberd_frontend_socket_sup,
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[Module, SockMod, Socket, Opts, Receiver]);
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raw ->
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%{ok, Pid} = Module:start({SockMod, Socket}, Opts),
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%case SockMod:controlling_process(Socket, Pid) of
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% ok ->
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% ok;
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% {error, _Reason} ->
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% SockMod:close(Socket)
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%end
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todo
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end.
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starttls(FsmRef, TLSOpts) ->
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starttls(FsmRef, TLSOpts, undefined).
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starttls(FsmRef, TLSOpts, Data) ->
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gen_server:call(FsmRef, {starttls, TLSOpts, Data}),
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FsmRef.
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compress(FsmRef) -> compress(FsmRef, undefined).
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compress(FsmRef, Data) ->
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gen_server:call(FsmRef, {compress, Data}), FsmRef.
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reset_stream(FsmRef) ->
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gen_server:call(FsmRef, reset_stream).
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send(FsmRef, Data) ->
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gen_server:call(FsmRef, {send, Data}).
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change_shaper(FsmRef, Shaper) ->
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gen_server:call(FsmRef, {change_shaper, Shaper}).
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monitor(FsmRef) -> erlang:monitor(process, FsmRef).
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get_sockmod(FsmRef) ->
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gen_server:call(FsmRef, get_sockmod).
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get_peer_certificate(FsmRef) ->
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gen_server:call(FsmRef, get_peer_certificate).
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get_verify_result(FsmRef) ->
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gen_server:call(FsmRef, get_verify_result).
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close(FsmRef) -> gen_server:call(FsmRef, close).
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sockname(FsmRef) -> gen_server:call(FsmRef, sockname).
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setopts(FsmRef, Opts) ->
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gen_server:call(FsmRef, {setopts, Opts}).
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change_controller(FsmRef, C2SPid) ->
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gen_server:call(FsmRef, {change_controller, C2SPid}).
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peername(FsmRef) -> gen_server:call(FsmRef, peername).
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%%====================================================================
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%% gen_server callbacks
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%%====================================================================
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init([Module, SockMod, Socket, Opts, Receiver]) ->
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Node = ejabberd_node_groups:get_closest_node(backend),
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IP = case peername(SockMod, Socket) of
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{ok, IP1} -> IP1;
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_ -> undefined
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end,
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{SockMod2, Socket2} = check_starttls(SockMod, Socket,
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Receiver, Opts),
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{ok, Pid} = rpc:call(Node, Module, start,
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[{?MODULE, self()}, [{frontend_ip, IP} | Opts]]),
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ejabberd_receiver:become_controller(Receiver, Pid),
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{ok,
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#socket_state{sockmod = SockMod2, socket = Socket2,
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receiver = Receiver}}.
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handle_call({starttls, TLSOpts, Data}, _From, State) ->
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{ok, TLSSocket} =
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ejabberd_receiver:starttls(State#socket_state.receiver,
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TLSOpts, Data),
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Reply = ok,
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{reply, Reply,
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State#socket_state{socket = TLSSocket, sockmod = tls},
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?HIBERNATE_TIMEOUT};
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handle_call({compress, Data}, _From, State) ->
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{ok, ZlibSocket} =
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ejabberd_receiver:compress(State#socket_state.receiver, Data),
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Reply = ok,
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{reply, Reply,
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State#socket_state{socket = ZlibSocket,
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sockmod = ezlib},
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?HIBERNATE_TIMEOUT};
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handle_call(reset_stream, _From, State) ->
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ejabberd_receiver:reset_stream(State#socket_state.receiver),
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Reply = ok,
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call({send, Data}, _From, State) ->
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catch (State#socket_state.sockmod):send(State#socket_state.socket,
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Data),
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Reply = ok,
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call({change_shaper, Shaper}, _From, State) ->
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ejabberd_receiver:change_shaper(State#socket_state.receiver,
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Shaper),
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Reply = ok,
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call(get_sockmod, _From, State) ->
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Reply = State#socket_state.sockmod,
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call(get_peer_certificate, _From, State) ->
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Reply = tls:get_peer_certificate(State#socket_state.socket),
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call(get_verify_result, _From, State) ->
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Reply = tls:get_verify_result(State#socket_state.socket),
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call(close, _From, State) ->
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ejabberd_receiver:close(State#socket_state.receiver),
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Reply = ok,
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{stop, normal, Reply, State};
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handle_call(sockname, _From, State) ->
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#socket_state{sockmod = SockMod, socket = Socket} = State,
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Reply = peername(SockMod, Socket),
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call(peername, _From, State) ->
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#socket_state{sockmod = SockMod, socket = Socket} = State,
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Reply = case SockMod of
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gen_tcp -> inet:peername(Socket);
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_ -> SockMod:peername(Socket)
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end,
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{reply, Reply, State, ?HIBERNATE_TIMEOUT};
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handle_call({setopts, Opts}, _From, State) ->
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ejabberd_receiver:setopts(State#socket_state.receiver, Opts),
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{reply, ok, State, ?HIBERNATE_TIMEOUT};
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handle_call({change_controller, Pid}, _From, State) ->
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ejabberd_receiver:change_controller(State#socket_state.receiver,
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Pid),
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{reply, ok, State, ?HIBERNATE_TIMEOUT};
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handle_call(_Request, _From, State) ->
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Reply = ok, {reply, Reply, State, ?HIBERNATE_TIMEOUT}.
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handle_cast(_Msg, State) ->
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{noreply, State, ?HIBERNATE_TIMEOUT}.
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handle_info(timeout, State) ->
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proc_lib:hibernate(gen_server, enter_loop,
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[?MODULE, [], State]),
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{noreply, State, ?HIBERNATE_TIMEOUT};
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handle_info(_Info, State) ->
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{noreply, State, ?HIBERNATE_TIMEOUT}.
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terminate(_Reason, _State) -> ok.
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code_change(_OldVsn, State, _Extra) -> {ok, State}.
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check_starttls(SockMod, Socket, Receiver, Opts) ->
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TLSEnabled = lists:member(tls, Opts),
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TLSOpts = lists:filter(fun ({certfile, _}) -> true;
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(_) -> false
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end,
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Opts),
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if TLSEnabled ->
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{ok, TLSSocket} = ejabberd_receiver:starttls(Receiver,
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TLSOpts),
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{tls, TLSSocket};
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true -> {SockMod, Socket}
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end.
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peername(SockMod, Socket) ->
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case SockMod of
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gen_tcp -> inet:peername(Socket);
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_ -> SockMod:peername(Socket)
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end.
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