%%%-------------------------------------------------------------------
%%% File : ejabberd_auth_pam.erl
%%% Author : Evgeniy Khramtsov <xram@jabber.ru>
%%% Purpose : PAM authentication
%%% Created : 5 Jul 2007 by Evgeniy Khramtsov <xram@jabber.ru>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2020 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%-------------------------------------------------------------------
-module(ejabberd_auth_pam).
-author('xram@jabber.ru').
-behaviour(ejabberd_auth).
-export([start/1, stop/1, check_password/4,
user_exists/2, store_type/1, plain_password_required/1]).
start(_Host) ->
ejabberd:start_app(epam).
stop(_Host) ->
ok.
check_password(User, AuthzId, Host, Password) ->
if AuthzId /= <<>> andalso AuthzId /= User ->
false;
true ->
Service = get_pam_service(Host),
UserInfo = case get_pam_userinfotype(Host) of
username -> User;
jid -> <<User/binary, "@", Host/binary>>
end,
case catch epam:authenticate(Service, UserInfo, Password) of
true -> {cache, true};
false -> {cache, false};
_ -> {nocache, false}
end
end.
user_exists(User, Host) ->
Service = get_pam_service(Host),
UserInfo = case get_pam_userinfotype(Host) of
username -> User;
jid -> <<User/binary, "@", Host/binary>>
end,
case catch epam:acct_mgmt(Service, UserInfo) of
true -> {cache, true};
false -> {cache, false};
_Err -> {nocache, {error, db_failure}}
end.
plain_password_required(_) -> true.
store_type(_) -> external.
%%====================================================================
%% Internal functions
%%====================================================================
get_pam_service(Host) ->
ejabberd_option:pam_service(Host).
get_pam_userinfotype(Host) ->
ejabberd_option:pam_userinfotype(Host).
