290 lines
16 KiB
Erlang
290 lines
16 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : mod_bosh.erl
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%%% Author : Evgeniy Khramtsov <ekhramtsov@process-one.net>
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%%% Purpose : This module acts as a bridge to ejabberd_bosh which implements
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%%% the real stuff, this is to handle the new pluggable architecture
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%%% for extending ejabberd's http service.
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%%% Created : 20 Jul 2011 by Evgeniy Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2017 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 along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%-------------------------------------------------------------------
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-module(mod_bosh).
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-author('steve@zeank.in-berlin.de').
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%%-define(ejabberd_debug, true).
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-behaviour(gen_mod).
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-export([start_link/0]).
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-export([start/2, stop/1, reload/3, process/2, open_session/2,
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close_session/1, find_session/1]).
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-export([depends/2, mod_opt_type/1]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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-include_lib("stdlib/include/ms_transform.hrl").
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-include("xmpp.hrl").
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-include("ejabberd_http.hrl").
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-include("bosh.hrl").
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-callback init() -> any().
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-callback open_session(binary(), pid()) -> any().
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-callback close_session(binary()) -> any().
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-callback find_session(binary()) -> {ok, pid()} | error.
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%%%----------------------------------------------------------------------
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%%% API
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%%%----------------------------------------------------------------------
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start_link() ->
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gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
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process([], #request{method = 'POST', data = <<>>}) ->
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?DEBUG("Bad Request: no data", []),
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{400, ?HEADER(?CT_XML),
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#xmlel{name = <<"h1">>, attrs = [],
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children = [{xmlcdata, <<"400 Bad Request">>}]}};
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process([],
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#request{method = 'POST', data = Data, ip = IP, headers = Hdrs}) ->
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?DEBUG("Incoming data: ~p", [Data]),
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Type = get_type(Hdrs),
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ejabberd_bosh:process_request(Data, IP, Type);
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process([], #request{method = 'GET', data = <<>>}) ->
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{200, ?HEADER(?CT_XML), get_human_html_xmlel()};
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process([], #request{method = 'OPTIONS', data = <<>>}) ->
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{200, ?OPTIONS_HEADER, []};
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process(_Path, _Request) ->
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?DEBUG("Bad Request: ~p", [_Request]),
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{400, ?HEADER(?CT_XML),
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#xmlel{name = <<"h1">>, attrs = [],
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children = [{xmlcdata, <<"400 Bad Request">>}]}}.
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open_session(SID, Pid) ->
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Mod = gen_mod:ram_db_mod(global, ?MODULE),
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Mod:open_session(SID, Pid).
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close_session(SID) ->
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Mod = gen_mod:ram_db_mod(global, ?MODULE),
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Mod:close_session(SID).
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find_session(SID) ->
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Mod = gen_mod:ram_db_mod(global, ?MODULE),
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Mod:find_session(SID).
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start(Host, Opts) ->
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start_jiffy(Opts),
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Mod = gen_mod:ram_db_mod(global, ?MODULE),
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Mod:init(),
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TmpSup = gen_mod:get_module_proc(Host, ?MODULE),
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TmpSupSpec = {TmpSup,
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{ejabberd_tmp_sup, start_link, [TmpSup, ejabberd_bosh]},
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permanent, infinity, supervisor, [ejabberd_tmp_sup]},
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supervisor:start_child(ejabberd_sup, TmpSupSpec).
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stop(Host) ->
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TmpSup = gen_mod:get_module_proc(Host, ?MODULE),
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supervisor:terminate_child(ejabberd_sup, TmpSup),
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supervisor:delete_child(ejabberd_sup, TmpSup).
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reload(_Host, NewOpts, _OldOpts) ->
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start_jiffy(NewOpts),
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Mod = gen_mod:ram_db_mod(global, ?MODULE),
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Mod:init(),
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ok.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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start_jiffy(Opts) ->
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case gen_mod:get_opt(json, Opts,
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fun(false) -> false;
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(true) -> true
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end, false) of
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false ->
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ok;
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true ->
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case catch ejabberd:start_app(jiffy) of
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ok ->
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ok;
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Err ->
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?WARNING_MSG("Failed to start JSON codec (jiffy): ~p. "
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"JSON support will be disabled", [Err])
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end
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end.
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get_type(Hdrs) ->
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try
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{_, S} = lists:keyfind('Content-Type', 1, Hdrs),
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[T|_] = str:tokens(S, <<";">>),
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[_, <<"json">>] = str:tokens(T, <<"/">>),
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json
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catch _:_ ->
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xml
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end.
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depends(_Host, _Opts) ->
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[].
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mod_opt_type(json) ->
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fun (false) -> false;
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(true) -> true
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end;
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mod_opt_type(max_concat) ->
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fun (unlimited) -> unlimited;
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(N) when is_integer(N), N > 0 -> N
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end;
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mod_opt_type(max_inactivity) ->
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fun (I) when is_integer(I), I > 0 -> I end;
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mod_opt_type(max_pause) ->
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fun (I) when is_integer(I), I > 0 -> I end;
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mod_opt_type(prebind) ->
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fun (B) when is_boolean(B) -> B end;
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mod_opt_type(ram_db_type) ->
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fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
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mod_opt_type(_) ->
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[json, max_concat, max_inactivity, max_pause, prebind, ram_db_type].
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%%%----------------------------------------------------------------------
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%%% Help Web Page
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%%%----------------------------------------------------------------------
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get_human_html_xmlel() ->
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Heading = <<"ejabberd ",
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(iolist_to_binary(atom_to_list(?MODULE)))/binary>>,
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#xmlel{name = <<"html">>,
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attrs =
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[{<<"xmlns">>, <<"http://www.w3.org/1999/xhtml">>}],
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children =
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[#xmlel{name = <<"head">>,
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children =
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[#xmlel{name = <<"title">>,
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children = [{xmlcdata, Heading}]},
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#xmlel{name = <<"style">>,
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children = [{xmlcdata, get_style_cdata()}]}]},
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#xmlel{name = <<"body">>,
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children =
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[#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"container">>}],
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children = get_container_children(Heading)}]}]}.
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get_container_children(Heading) ->
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[#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"section">>}],
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children =
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[#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"block">>}],
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children =
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[#xmlel{name = <<"a">>,
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attrs = [{<<"href">>, <<"https://www.ejabberd.im">>}],
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children =
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[#xmlel{name = <<"img">>,
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attrs = [{<<"height">>, <<"32">>},
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{<<"src">>, get_image_src()}]}]}]}]},
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#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"white section">>}],
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children =
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[#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"block">>}],
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children =
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[#xmlel{name = <<"h1">>, children = [{xmlcdata, Heading}]},
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#xmlel{name = <<"p">>, children =
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[{xmlcdata, <<"An implementation of ">>},
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#xmlel{name = <<"a">>,
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attrs = [{<<"href">>, <<"http://xmpp.org/extensions/xep-0206.html">>}],
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children = [{xmlcdata, <<"XMPP over BOSH (XEP-0206)">>}]}]},
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#xmlel{name = <<"p">>, children =
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[{xmlcdata, <<"This web page is only informative. To "
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"use HTTP-Bind you need a Jabber/XMPP "
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"client that supports it.">>}]}]}]},
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#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"section">>}],
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children =
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[#xmlel{name = <<"div">>,
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attrs = [{<<"class">>, <<"block">>}],
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children =
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[#xmlel{name = <<"a">>,
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attrs = [{<<"href">>, <<"https://www.ejabberd.im">>},
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{<<"title">>, <<"ejabberd XMPP server">>}],
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children = [{xmlcdata, <<"ejabberd">>}]},
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{xmlcdata, <<" is maintained by ">>},
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#xmlel{name = <<"a">>,
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attrs = [{<<"href">>, <<"https://www.process-one.net">>},
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{<<"title">>, <<"ProcessOne - Leader in Instant Messaging and Push Solutions">>}],
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children = [{xmlcdata, <<"ProcessOne">>}]} ]}]}
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].
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get_style_cdata() ->
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<<"
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body {
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margin: 0;
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padding: 0;
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font-family: sans-serif;
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color: #fff;
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}
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h1 {
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font-size: 3em;
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color: #444;
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}
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p {
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line-height: 1.5em;
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color: #888;
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}
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a {
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color: #fff;
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}
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a:hover,
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a:active {
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text-decoration: underline;
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}
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.container {
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background: #424A55;
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background-image: -webkit-linear-gradient(270deg, rgba(48,52,62,0) 24%, #30353e 100%);
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background-image: linear-gradient(-180deg, rgba(48,52,62,0) 24%, #30353e 100%);
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}
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.section {
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padding: 3em;
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}
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.white.section {
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background: #fff;
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border-bottom: 4px solid #41AFCA;
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}
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.white.section a {
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text-decoration: none;
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color: #41AFCA;
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}
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.white.section a:hover,
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.white.section a:active {
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text-decoration: underline;
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}
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.block {
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margin: 0 auto;
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max-width: 900px;
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width: 100%;
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}">>.
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get_image_src() ->
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">>.
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