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xmpp.chapril.org-ejabberd/src/cyrsasl_plain.erl

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%%%----------------------------------------------------------------------
%%% File : cyrsasl_plain.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose : PLAIN SASL mechanism
%%% Created : 8 Mar 2003 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(cyrsasl_plain).
-author('alexey@sevcom.net').
-vsn('$Revision$ ').
-export([start/1, stop/0, mech_new/0, mech_step/2, parse/1]).
-behaviour(cyrsasl).
%-behaviour(gen_mod).
start(Opts) ->
cyrsasl:register_mechanism("PLAIN", ?MODULE),
ok.
stop() ->
ok.
mech_new() ->
{ok, []}.
mech_step(State, ClientIn) ->
case parse(ClientIn) of
[AuthzId, User, Password] ->
case ejabberd_auth:check_password(User, Password) of
true ->
{ok, [{username, User}, {authzid, AuthzId}]};
_ ->
{error, "bad-auth"}
end;
_ ->
{error, "bad-protocol"}
end.
parse(S) ->
parse1(S, "", []).
parse1([0 | Cs], S, T) ->
parse1(Cs, "", [lists:reverse(S) | T]);
parse1([C | Cs], S, T) ->
parse1(Cs, [C | S], T);
%parse1([], [], T) ->
% lists:reverse(T);
parse1([], S, T) ->
lists:reverse([lists:reverse(S) | T]).