%%%----------------------------------------------------------------------
%%% File : mod_http_bind.erl
%%% Author : Stefan Strigler <steve@zeank.in-berlin.de>
%%% Purpose : Implementation of XMPP over BOSH (XEP-0206)
%%% Created : Tue Feb 20 13:15:52 CET 2007
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2013 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
%%%
%%%----------------------------------------------------------------------
%%%----------------------------------------------------------------------
%%% This module acts as a bridge to ejabberd_http_bind which implements
%%% the real stuff, this is to handle the new pluggable architecture for
%%% extending ejabberd's http service.
%%%----------------------------------------------------------------------
-module(mod_http_bind).
-author('steve@zeank.in-berlin.de').
%%-define(ejabberd_debug, true).
-behaviour(gen_mod).
-export([start/2, stop/1, process/2]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("jlib.hrl").
-include("ejabberd_http.hrl").
-include("http_bind.hrl").
-define(PROCNAME_MHB, ejabberd_mod_http_bind).
%% Duplicated from ejabberd_http_bind.
%% TODO: move to hrl file.
-record(http_bind,
{id, pid, to, hold, wait, process_delay, version}).
%%%----------------------------------------------------------------------
%%% API
%%%----------------------------------------------------------------------
process([], #request{method = 'POST', data = <<>>}) ->
?DEBUG("Bad Request: no data", []),
{400, ?HEADER,
#xmlel{name = <<"h1">>, children = [{xmlcdata, <<"400 Bad Request">>}]}};
process([],
#request{method = 'POST', data = Data, ip = IP}) ->
?DEBUG("Incoming data: ~s", [Data]),
ejabberd_http_bind:process_request(Data, IP);
process([], #request{method = 'GET', data = <<>>}) ->
{200, ?HEADER, get_human_html_xmlel()};
process([], #request{method = 'OPTIONS', data = <<>>}) ->
{200, ?OPTIONS_HEADER, <<>>};
process([], #request{method = 'HEAD'}) ->
{200, ?HEADER, <<>>};
process(_Path, _Request) ->
?DEBUG("Bad Request: ~p", [_Request]),
{400, ?HEADER,
#xmlel{name = <<"h1">>, children = [{xmlcdata, <<"400 Bad Request">>}]}}.
get_human_html_xmlel() ->
Heading = <<"ejabberd ",
(iolist_to_binary(atom_to_list(?MODULE)))/binary>>,
#xmlel{name = <<"html">>,
attrs =
[{<<"xmlns">>, <<"http://www.w3.org/1999/xhtml">>}],
children =
[#xmlel{name = <<"head">>,
children =
[#xmlel{name = <<"title">>,
children = [{xmlcdata, Heading}]}]},
#xmlel{name = <<"body">>,
children =
[#xmlel{name = <<"h1">>,
children = [{xmlcdata, Heading}]},
#xmlel{name = <<"p">>,
children =
[{xmlcdata, <<"An implementation of ">>},
#xmlel{name = <<"a">>,
attrs =
[{<<"href">>,
<<"http://xmpp.org/extensions/xep-0206.html">>}],
children =
[{xmlcdata,
<<"XMPP over BOSH (XEP-0206)">>}]}]},
#xmlel{name = <<"p">>,
children =
[{xmlcdata,
<<"This web page is only informative. To "
"use HTTP-Bind you need a Jabber/XMPP "
"client that supports it.">>}]}]}]}.
%%%----------------------------------------------------------------------
%%% BEHAVIOUR CALLBACKS
%%%----------------------------------------------------------------------
start(Host, _Opts) ->
setup_database(),
Proc = gen_mod:get_module_proc(Host, ?PROCNAME_MHB),
ChildSpec = {Proc,
{ejabberd_tmp_sup, start_link,
[Proc, ejabberd_http_bind]},
permanent, infinity, supervisor, [ejabberd_tmp_sup]},
supervisor:start_child(ejabberd_sup, ChildSpec).
stop(Host) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME_MHB),
supervisor:terminate_child(ejabberd_sup, Proc),
supervisor:delete_child(ejabberd_sup, Proc).
setup_database() ->
migrate_database(),
mnesia:create_table(http_bind,
[{ram_copies, [node()]},
{attributes, record_info(fields, http_bind)}]).
migrate_database() ->
case catch mnesia:table_info(http_bind, attributes) of
[id, pid, to, hold, wait, process_delay, version] ->
ok;
_ ->
%% Since the stored information is not important, instead
%% of actually migrating data, let's just destroy the table
mnesia:delete_table(http_bind)
end.
