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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License at
%% http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
%% License for the specific language governing rights and limitations
%% under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developers of the Original Code are LShift Ltd,
%% Cohesive Financial Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created before 22-Nov-2008 00:00:00 GMT by LShift Ltd,
%% Cohesive Financial Technologies LLC, or Rabbit Technologies Ltd
%% are Copyright (C) 2007-2008 LShift Ltd, Cohesive Financial
%% Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created by LShift Ltd are Copyright (C) 2007-2010 LShift
%% Ltd. Portions created by Cohesive Financial Technologies LLC are
%% Copyright (C) 2007-2010 Cohesive Financial Technologies
%% LLC. Portions created by Rabbit Technologies Ltd are Copyright
%% (C) 2007-2010 Rabbit Technologies Ltd.
%%
%% All Rights Reserved.
%%
%% Contributor(s): ______________________________________.
%%
-module(rabbit_auth_backend_internal).
-include("rabbit.hrl").
-behaviour(rabbit_auth_backend).
-export([description/0]).
-export([check_user_login/2, check_vhost_access/3, check_resource_access/3]).
-include("rabbit_auth_backend_spec.hrl").
%% Our internal user database
description() ->
[{name, <<"Internal">>},
{description, <<"Internal user / password database">>}].
check_user_login(Username, []) ->
internal_check_user_login(Username, fun() -> true end);
check_user_login(Username, [{password, Password}]) ->
internal_check_user_login(
Username,
fun(#internal_user{password_hash = Hash}) ->
rabbit_access_control:check_password(Password, Hash)
end);
check_user_login(Username, AuthProps) ->
exit({unknown_auth_props, Username, AuthProps}).
internal_check_user_login(Username, Fun) ->
Refused = {refused, "user '~s' - invalid credentials", [Username]},
case rabbit_access_control:lookup_user(Username) of
{ok, User = #internal_user{is_admin = IsAdmin}} ->
case Fun(User) of
true -> {ok, #user{username = Username,
is_admin = IsAdmin,
auth_backend = ?MODULE,
impl = User}};
_ -> Refused
end;
{error, not_found} ->
Refused
end.
check_vhost_access(#user{is_admin = true}, _VHostPath, read) ->
true;
check_vhost_access(#user{username = Username}, VHostPath, write) ->
%% TODO: use dirty ops instead
rabbit_misc:execute_mnesia_transaction(
fun () ->
case mnesia:read({rabbit_user_permission,
#user_vhost{username = Username,
virtual_host = VHostPath}}) of
[] -> false;
[_R] -> true
end
end).
check_resource_access(#user{username = Username},
#resource{virtual_host = VHostPath, name = Name},
Permission) ->
case mnesia:dirty_read({rabbit_user_permission,
#user_vhost{username = Username,
virtual_host = VHostPath}}) of
[] ->
false;
[#user_permission{permission = P}] ->
PermRegexp =
case element(permission_index(Permission), P) of
%% <<"^$">> breaks Emacs' erlang mode
<<"">> -> <<$^, $$>>;
RE -> RE
end,
case re:run(Name, PermRegexp, [{capture, none}]) of
match -> true;
nomatch -> false
end
end.
permission_index(configure) -> #permission.configure;
permission_index(write) -> #permission.write;
permission_index(read) -> #permission.read.
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