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%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_auth_mechanism_cr_demo).
-include("rabbit.hrl").
-behaviour(rabbit_auth_mechanism).
-export([description/0, should_offer/1, init/1, handle_response/2]).
-rabbit_boot_step({?MODULE,
[{description, "auth mechanism cr-demo"},
{mfa, {rabbit_registry, register,
[auth_mechanism, <<"RABBIT-CR-DEMO">>,
?MODULE]}},
{requires, rabbit_registry},
{enables, kernel_ready}]}).
-record(state, {username = undefined}).
%% Provides equivalent security to PLAIN but demos use of Connection.Secure(Ok)
%% START-OK: Username
%% SECURE: "Please tell me your password"
%% SECURE-OK: "My password is ~s", [Password]
description() ->
[{description, <<"RabbitMQ Demo challenge-response authentication "
"mechanism">>}].
should_offer(_Sock) ->
true.
init(_Sock) ->
#state{}.
handle_response(Response, State = #state{username = undefined}) ->
{challenge, <<"Please tell me your password">>,
State#state{username = Response}};
handle_response(<<"My password is ", Password/binary>>,
#state{username = Username}) ->
rabbit_access_control:check_user_pass_login(Username, Password);
handle_response(Response, _State) ->
{protocol_error, "Invalid response '~s'", [Response]}.
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