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%%-------------------------------------------------------------------
%% This file is part of ldapsp.
%%
%% Copyright (C) 2016 Guido Günther <agx@sigxcpu.org>
%%
%% ldapsp 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 3 of the License, or
%% (at your option) any later version.
%%
%% ldapsp 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 ldapsp. If not, see <http://www.gnu.org/licenses/>.
%%-------------------------------------------------------------------
-module(ldapsp_ldap).
-behaviour(gen_server).
%% API
-export([start_link/1]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3,
%% API
add/2,
add/3,
delete/1,
delete/2
]).
-define(SERVER, ?MODULE).
-record(state, {server, user, password, opts, tls=true, tls_opts}).
%%%===================================================================
%%% API
%%%===================================================================
-spec add(string(), list(), integer()) -> ok | {error,atom}.
add(Dn, Attributes, Timeout) ->
gen_server:call(?SERVER, {add, Dn, Attributes}, Timeout).
-spec add(string(), list()) -> ok | {error,atom}.
add(Dn, Attributes) ->
gen_server:call(?SERVER, {add, Dn, Attributes}).
-spec delete(string(), integer()) -> ok | {error,atom}.
delete(Dn, Timeout) ->
gen_server:call(?SERVER, {delete, Dn}, Timeout).
-spec delete(string()) -> ok | {error,atom}.
delete(Dn) ->
gen_server:call(?SERVER, {delete, Dn}).
%%--------------------------------------------------------------------
%% @doc
%% Starts the server
%%
%% @spec start_link() -> {ok, Pid} | ignore | {error, Error}
%% @end
%%--------------------------------------------------------------------
start_link(Args) ->
gen_server:start_link({local, ?SERVER}, ?MODULE, Args, []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%%--------------------------------------------------------------------
%% @private
%% @doc
%% Initializes the server
%%
%% @spec init(Args) -> {ok, State} |
%% {ok, State, Timeout} |
%% ignore |
%% {stop, Reason}
%% @end
%%--------------------------------------------------------------------
init(Opts) ->
{ok, #state{server=proplists:get_value(server, Opts),
tls=proplists:get_value(tls, Opts, true),
tls_opts=proplists:get_value(tls_opts, Opts,
[{verify_type, verify_peer}]),
opts=proplists:get_value(opts, Opts),
user=proplists:get_value(user, Opts),
password=proplists:get_value(password, Opts)}}.
%%--------------------------------------------------------------------
%% @private
%% @doc
%% Handling call messages
%%
%% @spec handle_call(Request, From, State) ->
%% {reply, Reply, State} |
%% {reply, Reply, State, Timeout} |
%% {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, Reply, State} |
%% {stop, Reason, State}
%% @end
%%--------------------------------------------------------------------
handle_call({add, Hostname, Class}, _From, State) ->
Reply = do_add(Hostname, Class, State),
{reply, Reply, State};
handle_call({delete, Hostname}, _From, State) ->
Reply = do_delete(Hostname, State),
{reply, Reply, State}.
%%--------------------------------------------------------------------
%% @private
%% @doc
%% Handling cast messages
%%
%% @spec handle_cast(Msg, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% @end
%%--------------------------------------------------------------------
handle_cast(_Msg, State) ->
{noreply, State}.
%%--------------------------------------------------------------------
%% @private
%% @doc
%% Handling all non call/cast messages
%%
%% @spec handle_info(Info, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% @end
%%--------------------------------------------------------------------
handle_info(_Info, State) ->
{noreply, State}.
%%--------------------------------------------------------------------
%% @private
%% @doc
%% This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
%%
%% @spec terminate(Reason, State) -> void()
%% @end
%%--------------------------------------------------------------------
terminate(_Reason, _State) ->
ok.
%%--------------------------------------------------------------------
%% @private
%% @doc
%% Convert process state when code is changed
%%
%% @spec code_change(OldVsn, State, Extra) -> {ok, NewState}
%% @end
%%--------------------------------------------------------------------
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
start_tls(Handle, TLSOpts)->
ok = eldap:start_tls(Handle, TLSOpts).
connect(#state{server=Server, user=User, password=Pw, opts=Opts, tls=TLS, tls_opts=TLSOpts}) ->
{ok, Handle} = case Opts of
undefined -> eldap:open([Server]);
_ -> eldap:open([Server], Opts)
end,
ok = case TLS of
true -> start_tls(Handle, TLSOpts);
_ -> ok
end,
ok = eldap:simple_bind(Handle, User, Pw),
{ok, Handle}.
% -> ok , {error,Reaseon}
do_add(Dn, Attributes, State) ->
{ok, Handle} = connect(State),
ldapsp_log:debug("Will create: ~p with ~p~n", [Dn, Attributes]),
Resp = eldap:add(Handle, Dn, Attributes),
check_close(eldap:close(Handle)),
Resp.
% -> ok , {error,Reaseon}
do_delete(Dn, State) ->
{ok, Handle} = connect(State),
Resp = eldap:delete(Handle, Dn),
check_close(eldap:close(Handle)),
Resp.
check_close(ok) -> ok;
% erlang 17.1 has another return value than 1.18.3
check_close({_Pid, close}) -> ok;
check_close(EverythingElse) -> ok = EverythingElse.
|
