%%
%% %CopyrightBegin%
%%
  Copyright Ericsson AB 1998 - 2011 . All Rights Reserved .
%%
  The contents of this file are subject to the Erlang Public License ,
  Version 1.1 , ( the " License " ) ; you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at /.
%%
  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.
%%
%% %CopyrightEnd%
%%

%%

-module(dtlsex_sup).

-behaviour(supervisor).

%% API
-export([start_link/0, manager_opts/0]).

%% Supervisor callback
-export([init/1]).

%%%=========================================================================
%%%  API
%%%=========================================================================

-spec start_link() -> {ok, pid()} | ignore | {error, term()}.
			
start_link() ->
    supervisor:start_link({local, ?MODULE}, ?MODULE, []).

%%%=========================================================================
%%%  Supervisor callback
%%%=========================================================================

init([]) ->    
    %% OLD ssl - moved start to ssl.erl only if old
    %% ssl is acctualy run!
Child1 = { ssl_server , { ssl_server , start_link , [ ] } ,
	        permanent , 2000 , worker , [ ssl_server ] } ,

    %% Does not start any port programs so it does matter
    %% so much if it is not used!
  Child2 = { ssl_broker_sup , { ssl_broker_sup , start_link , [ ] } ,
 	       permanent , 2000 , supervisor , [ ssl_broker_sup ] } ,


    %% New ssl
    SessionCertManager = session_and_cert_manager_child_spec(),
    ConnetionManager = connection_manager_child_spec(),

    {ok, {{one_for_all, 10, 3600}, [SessionCertManager, ConnetionManager]}}.


manager_opts() ->
    CbOpts = case application:get_env(dtlsex, session_cb) of
		 {ok, Cb} when is_atom(Cb) ->
		     InitArgs = session_cb_init_args(),
		     [{session_cb, Cb}, {session_cb_init_args, InitArgs}];
		 _  ->
		     []
	     end,
    case application:get_env(dtlsex, session_lifetime) of
	{ok, Time} when is_integer(Time) ->
	    [{session_lifetime, Time}| CbOpts];
	_  ->
	    CbOpts
    end.
    
%%--------------------------------------------------------------------
  Internal functions
%%--------------------------------------------------------------------

session_and_cert_manager_child_spec() ->
    Opts = manager_opts(),
    Name = dtlsex_manager,  
    StartFunc = {dtlsex_manager, start_link, [Opts]},
    Restart = permanent, 
    Shutdown = 4000,
    Modules = [dtlsex_manager],
    Type = worker,
    {Name, StartFunc, Restart, Shutdown, Type, Modules}.

connection_manager_child_spec() ->
    Name = dtlsex_connection,  
    StartFunc = {dtlsex_connection_sup, start_link, []},
    Restart = permanent, 
    Shutdown = 4000,
    Modules = [dtlsex_connection],
    Type = supervisor,
    {Name, StartFunc, Restart, Shutdown, Type, Modules}.


session_cb_init_args() ->
    case application:get_env(dtlsex, session_cb_init_args) of
	{ok, Args} when is_list(Args) ->
	    Args;
	_  ->
	    []
    end.


 %CopyrightBegin%


 compliance with the License. You should have received a copy of the
 Erlang Public License along with this software. If not, it can be
 retrieved online at /.

 basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 the License for the specific language governing rights and limitations
 under the License.

 %CopyrightEnd%


 API
 Supervisor callback
=========================================================================
  API
=========================================================================
=========================================================================
  Supervisor callback
=========================================================================
 OLD ssl - moved start to ssl.erl only if old
 ssl is acctualy run!
 Does not start any port programs so it does matter
 so much if it is not used!
 New ssl
--------------------------------------------------------------------
--------------------------------------------------------------------
  Copyright Ericsson AB 1998 - 2011 . All Rights Reserved .
  The contents of this file are subject to the Erlang Public License ,
  Version 1.1 , ( the " License " ) ; you may not use this file except in
  Software distributed under the License is distributed on an " AS IS "


-module(dtlsex_sup).

-behaviour(supervisor).

-export([start_link/0, manager_opts/0]).

-export([init/1]).


-spec start_link() -> {ok, pid()} | ignore | {error, term()}.
			
start_link() ->
    supervisor:start_link({local, ?MODULE}, ?MODULE, []).


init([]) ->    
Child1 = { ssl_server , { ssl_server , start_link , [ ] } ,
	        permanent , 2000 , worker , [ ssl_server ] } ,

  Child2 = { ssl_broker_sup , { ssl_broker_sup , start_link , [ ] } ,
 	       permanent , 2000 , supervisor , [ ssl_broker_sup ] } ,


    SessionCertManager = session_and_cert_manager_child_spec(),
    ConnetionManager = connection_manager_child_spec(),

    {ok, {{one_for_all, 10, 3600}, [SessionCertManager, ConnetionManager]}}.


manager_opts() ->
    CbOpts = case application:get_env(dtlsex, session_cb) of
		 {ok, Cb} when is_atom(Cb) ->
		     InitArgs = session_cb_init_args(),
		     [{session_cb, Cb}, {session_cb_init_args, InitArgs}];
		 _  ->
		     []
	     end,
    case application:get_env(dtlsex, session_lifetime) of
	{ok, Time} when is_integer(Time) ->
	    [{session_lifetime, Time}| CbOpts];
	_  ->
	    CbOpts
    end.
    
  Internal functions

session_and_cert_manager_child_spec() ->
    Opts = manager_opts(),
    Name = dtlsex_manager,  
    StartFunc = {dtlsex_manager, start_link, [Opts]},
    Restart = permanent, 
    Shutdown = 4000,
    Modules = [dtlsex_manager],
    Type = worker,
    {Name, StartFunc, Restart, Shutdown, Type, Modules}.

connection_manager_child_spec() ->
    Name = dtlsex_connection,  
    StartFunc = {dtlsex_connection_sup, start_link, []},
    Restart = permanent, 
    Shutdown = 4000,
    Modules = [dtlsex_connection],
    Type = supervisor,
    {Name, StartFunc, Restart, Shutdown, Type, Modules}.


session_cb_init_args() ->
    case application:get_env(dtlsex, session_cb_init_args) of
	{ok, Args} when is_list(Args) ->
	    Args;
	_  ->
	    []
    end.
