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%%%----------------------------------------------------------------------
%%% File : ejabberd_zlib.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Interface to exmpp_compress
%%% Created : 19 Jan 2006 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2011 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_zlib).
-author('alexey@process-one.net').
-export([start/0, start_link/0,
enable_zlib/2, disable_zlib/1,
send/2,
recv/2, recv/3, recv_data/2,
setopts/2,
get_sockmod/1,
sockname/1, peername/1,
controlling_process/2,
close/1]).
-define(DEFLATE, 1).
-define(INFLATE, 2).
%% Copied from exmpp/src/core/exmpp_compress.erl
-record(compress_socket, {socket,
packet_mode = binary,
port
}).
start() ->
exmpp_compress:start().
start_link() ->
exmpp_compress:start_link().
enable_zlib(SockMod, Socket) ->
try
ZlibSock = exmpp_compress:enable_compression({SockMod, Socket},
[{compress_method, zlib}]),
{ok, ZlibSock}
catch
Exception ->
{error, Exception}
end.
disable_zlib(ZlibSock) ->
exmpp_compress:disable_compression(ZlibSock).
recv(Socket, Length) ->
recv(Socket, Length, infinity).
recv(ZlibSock, _Length, Timeout) ->
exmpp_compress:recv(ZlibSock, Timeout).
recv_data(#compress_socket{socket = {SockMod, Socket}} = ZlibSock, Packet) ->
case SockMod of
gen_tcp ->
recv_data2(ZlibSock, Packet);
_ ->
case SockMod:recv_data(Socket, Packet) of
{ok, Packet2} ->
recv_data2(ZlibSock, Packet2);
Error ->
Error
end
end.
recv_data2(ZlibSock, Packet) ->
exmpp_compress:recv_data(ZlibSock, Packet).
send(ZlibSock, Packet) ->
exmpp_compress:send(ZlibSock, Packet).
setopts(ZlibSock, Opts) ->
exmpp_compress:setopts(ZlibSock, Opts).
get_sockmod(#compress_socket{socket = {SockMod, _Port}}) ->
SockMod.
sockname(ZlibSock) ->
exmpp_compress:sockname(ZlibSock).
peername(ZlibSock) ->
exmpp_compress:peername(ZlibSock).
controlling_process(ZlibSock, Pid) ->
exmpp_compress:controlling_process(ZlibSock, Pid).
close(ZlibSock) ->
exmpp_compress:close(ZlibSock).
|
