77 lines
2.4 KiB
Erlang
77 lines
2.4 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : cyrsasl_anonymous.erl
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%%% Author : Magnus Henoch <henoch@dtek.chalmers.se>
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%%% Purpose : ANONYMOUS SASL mechanism
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%%% See http://www.ietf.org/internet-drafts/draft-ietf-sasl-anon-05.txt
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%%% Created : 23 Aug 2005 by Magnus Henoch <henoch@dtek.chalmers.se>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2012 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(cyrsasl_anonymous).
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-export([start/1, stop/0, mech_new/1, mech_step/2]).
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-include("cyrsasl.hrl").
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-behaviour(cyrsasl).
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%% @type mechstate() = {state, Server}
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%% Server = string().
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-record(state, {server}).
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%% @spec (Opts) -> true
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%% Opts = term()
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start(_Opts) ->
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cyrsasl:register_mechanism("ANONYMOUS", ?MODULE, plain),
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ok.
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%% @spec () -> ok
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stop() ->
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ok.
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mech_new(#sasl_params{host=Host}) ->
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{ok, #state{server = Host}}.
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%% @spec (State, ClientIn) -> Ok | Error
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%% State = mechstate()
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%% ClientIn = string()
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%% Ok = {ok, Props}
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%% Props = [Prop]
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%% Prop = {username, Username} | {auth_module, AuthModule}
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%% Username = string()
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%% AuthModule = ejabberd_auth_anonymous
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%% Error = {error, 'not-authorized'}
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mech_step(State, _ClientIn) ->
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%% We generate a random username:
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User = lists:concat([randoms:get_string() | tuple_to_list(now())]),
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Server = State#state.server,
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%% Checks that the username is available
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case ejabberd_auth:is_user_exists(User, Server) of
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true -> {error, 'not-authorized'};
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false -> {ok, [{username, User},
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{auth_module, ejabberd_auth_anonymous}]}
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end.
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