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path: root/lib/ssl/test/tls_api_SUITE.erl
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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2019-2019. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%

%%
-module(tls_api_SUITE).

%% Note: This directive should only be used in test suites.
-compile(export_all).
-include_lib("common_test/include/ct.hrl").
-include_lib("ssl/src/ssl_record.hrl").
-include_lib("ssl/src/ssl_internal.hrl").
-include_lib("ssl/src/ssl_api.hrl").
-include_lib("ssl/src/tls_handshake.hrl").

-define(SLEEP, 500).

%%--------------------------------------------------------------------
%% Common Test interface functions -----------------------------------
%%--------------------------------------------------------------------

all() ->
    [
     {group, 'tlsv1.3'},
     {group, 'tlsv1.2'},
     {group, 'tlsv1.1'},
     {group, 'tlsv1'},
     {group, 'sslv3'}
    ].

groups() ->
    [
     {'tlsv1.3', [], api_tests() -- [sockname]},
     {'tlsv1.2', [],  api_tests()},
     {'tlsv1.1', [],  api_tests()},
     {'tlsv1', [],  api_tests()},
     {'sslv3', [],  api_tests() ++ [ssl3_cipher_suite_limitation]}
    ].

api_tests() ->
    [
     tls_upgrade,
     tls_upgrade_with_timeout,
     tls_downgrade,
     tls_shutdown,
     tls_shutdown_write,
     tls_shutdown_both,
     tls_shutdown_error,
     tls_client_closes_socket,
     tls_closed_in_active_once,
     tls_tcp_msg,
     tls_tcp_msg_big,
     tls_dont_crash_on_handshake_garbage,
     tls_tcp_error_propagation_in_active_mode,
     peername,
     sockname,
     tls_server_handshake_timeout,
     transport_close,
     emulated_options,
     accept_pool,
     reuseaddr
    ].

init_per_suite(Config0) ->
    catch crypto:stop(),
    try crypto:start() of
	ok ->
	    ssl_test_lib:clean_start(),
	    ssl_test_lib:make_rsa_cert(Config0)
    catch _:_ ->
	    {skip, "Crypto did not start"}
    end.

end_per_suite(_Config) ->
    ssl:stop(),
    application:unload(ssl),
    application:stop(crypto).


init_per_group(GroupName, Config) ->
    case ssl_test_lib:is_tls_version(GroupName) of
	true ->
	    case ssl_test_lib:sufficient_crypto_support(GroupName) of
		true ->
		    ssl_test_lib:init_tls_version(GroupName, Config);
		false ->
		    {skip, "Missing crypto support"}
	    end;
	_ ->
	    ssl:start(),
	    Config
    end.

end_per_group(GroupName, Config) ->
    case ssl_test_lib:is_tls_version(GroupName) of
        true ->
            ssl_test_lib:clean_tls_version(Config);
        false ->
            Config
    end.

init_per_testcase(_TestCase, Config) ->
    ssl_test_lib:ct_log_supported_protocol_versions(Config),
    ct:timetrap({seconds, 10}),
    Config.

end_per_testcase(_TestCase, Config) ->     
    Config.

%%--------------------------------------------------------------------
%% Test Cases --------------------------------------------------------
%%--------------------------------------------------------------------
tls_upgrade() ->
    [{doc,"Test that you can upgrade an tcp connection to an ssl connection"}].

tls_upgrade(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}],

    Server = ssl_test_lib:start_upgrade_server([{node, ServerNode}, {port, 0}, 
						{from, self()}, 
						{mfa, {?MODULE, 
						       upgrade_result, []}},
						{tcp_options, 
						 [{active, false} | TcpOpts]},
						{ssl_options, [{verify, verify_peer} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_upgrade_client([{node, ClientNode}, 
						{port, Port}, 
				   {host, Hostname},
				   {from, self()}, 
				   {mfa, {?MODULE, upgrade_result, []}},
				   {tcp_options, [binary]},
				   {ssl_options,  [{verify, verify_peer},
                                                   {server_name_indication, Hostname} | ClientOpts]}]),
    
    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
		       [self(), Client, Server]),
    
    ssl_test_lib:check_result(Server, ok, Client, ok),
    
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).
%%--------------------------------------------------------------------
tls_upgrade_with_timeout() ->
    [{doc,"Test ssl_accept/3"}].

tls_upgrade_with_timeout(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}],

    Server = ssl_test_lib:start_upgrade_server([{node, ServerNode}, {port, 0}, 
						{from, self()}, 
						{timeout, 5000},
						{mfa, {?MODULE, 
						       upgrade_result, []}},
						{tcp_options, 
						 [{active, false} | TcpOpts]},
						{ssl_options, [{verify, verify_peer} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_upgrade_client([{node, ClientNode}, 
						{port, Port}, 
						{host, Hostname},
						{from, self()}, 
						{mfa, {?MODULE, upgrade_result, []}},
						{tcp_options, TcpOpts},
						{ssl_options, [{verify, verify_peer},
                                                               {server_name_indication, Hostname} | ClientOpts]}]),
    
    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
		       [self(), Client, Server]),
    
    ssl_test_lib:check_result(Server, ok, Client, ok),
    
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).

%%--------------------------------------------------------------------
tls_downgrade() ->
      [{doc,"Test that you can downgarde an ssl connection to an tcp connection"}].
tls_downgrade(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),

    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
					{from, self()},
					{mfa, {?MODULE, tls_downgrade_result, [self()]}},
					{options, [{active, false}, {verify, verify_peer} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
					{host, Hostname},
					{from, self()},
					{mfa, {?MODULE, tls_downgrade_result, [self()]}},
					{options, [{active, false}, {verify, verify_peer} | ClientOpts]}]),
                                                   
    ssl_test_lib:check_result(Server, ready, Client, ready),

    Server ! go,
    Client ! go,

    ssl_test_lib:check_result(Server, ok, Client, ok),
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).


%%--------------------------------------------------------------------
tls_shutdown() ->
    [{doc,"Test API function ssl:shutdown/2"}].
tls_shutdown(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, tls_shutdown_result, [server]}},
			   {options, [{exit_on_close, false},
				      {active, false} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
					{from, self()}, 
					{mfa, 
					 {?MODULE, tls_shutdown_result, [client]}},
					{options, 
					 [{exit_on_close, false},
					  {active, false} | ClientOpts]}]),
    
    ssl_test_lib:check_result(Server, ok, Client, ok),
    
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).

%%--------------------------------------------------------------------
tls_shutdown_write() ->
    [{doc,"Test API function ssl:shutdown/2 with option write."}].
tls_shutdown_write(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, tls_shutdown_write_result, [server]}},
			   {options, [{active, false} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
			   {from, self()}, 
			   {mfa, {?MODULE, tls_shutdown_write_result, [client]}},
			   {options, [{active, false} | ClientOpts]}]),
    
    ssl_test_lib:check_result(Server, ok, Client, {error, closed}).

%%--------------------------------------------------------------------
tls_shutdown_both() ->
    [{doc,"Test API function ssl:shutdown/2 with option both."}].
tls_shutdown_both(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, tls_shutdown_both_result, [server]}},
			   {options, [{active, false} | ServerOpts]}]),
    Port  = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
			   {from, self()}, 
			   {mfa, {?MODULE, tls_shutdown_both_result, [client]}},
			   {options, [{active, false} | ClientOpts]}]),
    
    ssl_test_lib:check_result(Server, ok, Client, {error, closed}).

%%--------------------------------------------------------------------
tls_shutdown_error() ->
    [{doc,"Test ssl:shutdown/2 error handling"}].
tls_shutdown_error(Config) when is_list(Config) ->
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    Port = ssl_test_lib:inet_port(node()),
    {ok, Listen} = ssl:listen(Port, ServerOpts),
    {error, enotconn} = ssl:shutdown(Listen, read_write),
    ok = ssl:close(Listen),
    {error, closed} = ssl:shutdown(Listen, read_write).
%%--------------------------------------------------------------------
tls_client_closes_socket() ->
    [{doc,"Test what happens when client closes socket before handshake is compleated"}].

tls_client_closes_socket(Config) when is_list(Config) -> 
    ServerOpts = ssl_test_lib:ssl_options(server_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}],
    
    Server = ssl_test_lib:start_upgrade_server_error([{node, ServerNode}, {port, 0}, 
						      {from, self()}, 
						      {tcp_options, TcpOpts},
						      {ssl_options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),

    Connect = fun() ->
		      {ok, _Socket} = rpc:call(ClientNode, gen_tcp, connect, 
					      [Hostname, Port, [binary]]),	      
		      %% Make sure that ssl_accept is called before 
		      %% client process ends and closes socket.
		      ct:sleep(?SLEEP)
	      end,
    
    _Client = spawn_link(Connect),

    ssl_test_lib:check_result(Server, {error,closed}).

%%--------------------------------------------------------------------
tls_closed_in_active_once() ->
    [{doc, "Test that ssl_closed is delivered in active once with non-empty buffer, check ERL-420."}].

tls_closed_in_active_once(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {_ClientNode, _ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}],
    Port = ssl_test_lib:inet_port(node()),
    Server = fun() ->
		     {ok, Listen} = gen_tcp:listen(Port, TcpOpts),
		     {ok, TcpServerSocket} = gen_tcp:accept(Listen),
		     {ok, ServerSocket} = ssl:handshake(TcpServerSocket, ServerOpts),
		     lists:foreach(
		       fun(_) ->
			       ssl:send(ServerSocket, "some random message\r\n")
		       end, lists:seq(1, 20)),
		     %% Close TCP instead of SSL socket to trigger the bug:
		     gen_tcp:close(TcpServerSocket),
		     gen_tcp:close(Listen)
	     end,
    spawn_link(Server),
    {ok, Socket} = ssl:connect(Hostname, Port, [{active, false} | ClientOpts]),
    Result = tls_closed_in_active_once_loop(Socket),
    ssl:close(Socket),
    case Result of
	ok -> ok;
	_ -> ct:fail(Result)
    end.
%%--------------------------------------------------------------------
tls_tcp_msg() ->
    [{doc,"Test what happens when a tcp tries to connect, i,e. a bad (ssl) packet is sent first"}].

tls_tcp_msg(Config) when is_list(Config) ->
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}, {active, false}],

    Server = ssl_test_lib:start_upgrade_server_error([{node, ServerNode}, {port, 0},
						      {from, self()},
						      {timeout, 5000},
						      {mfa, {?MODULE, dummy, []}},
						      {tcp_options, TcpOpts},
						      {ssl_options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),

    {ok, Socket} = gen_tcp:connect(Hostname, Port, [binary, {packet, 0}]),
    ct:log("Testcase ~p connected to Server ~p ~n", [self(), Server]),
    gen_tcp:send(Socket, "<SOME GARBLED NON SSL MESSAGE>"),

    receive 
	{tcp_closed, Socket} ->
	    receive 
		{Server, {error, Error}} ->
		    ct:log("Error ~p", [Error])
	    end
    end.
%%--------------------------------------------------------------------
tls_tcp_msg_big() ->
    [{doc,"Test what happens when a tcp tries to connect, i,e. a bad big (ssl) packet is sent first"}].

tls_tcp_msg_big(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    TcpOpts = [binary, {reuseaddr, true}],

    Rand = crypto:strong_rand_bytes(?MAX_CIPHER_TEXT_LENGTH+1),
    Server = ssl_test_lib:start_upgrade_server_error([{node, ServerNode}, {port, 0},
						      {from, self()},
						      {timeout, 5000},
						      {mfa, {?MODULE, dummy, []}},
						      {tcp_options, TcpOpts},
						      {ssl_options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),

    {ok, Socket} = gen_tcp:connect(Hostname, Port, [binary, {packet, 0}]),
    ct:log("Testcase ~p connected to Server ~p ~n", [self(), Server]),

    gen_tcp:send(Socket, <<?BYTE(0),
			   ?BYTE(3), ?BYTE(1), ?UINT16(?MAX_CIPHER_TEXT_LENGTH), Rand/binary>>),

    receive
	{tcp_closed, Socket} ->
	    receive
		{Server, {error, timeout}} ->
		    ct:fail("hangs");
		{Server, {error, Error}} ->
		    ct:log("Error ~p", [Error]);
		{'EXIT', Server, _} ->
		    ok	 
	    end
    end.

%%--------------------------------------------------------------------
tls_dont_crash_on_handshake_garbage() ->
    [{doc, "Ensure SSL server worker thows an alert on garbage during handshake "
      "instead of crashing and exposing state to user code"}].

tls_dont_crash_on_handshake_garbage(Config) ->
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),

    {_ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),

    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
					{from, self()},
					{mfa, {ssl_test_lib, send_recv_result_active, []}},
					{options, ServerOpts}]),
    unlink(Server), monitor(process, Server),
    Port = ssl_test_lib:inet_port(Server),

    {ok, Socket} = gen_tcp:connect(Hostname, Port, [binary, {active, false}]),

    % Send hello and garbage record
    ok = gen_tcp:send(Socket,
                      [<<22, 3,3, 49:16, 1, 45:24, 3,3, % client_hello
                         16#deadbeef:256, % 32 'random' bytes = 256 bits
                         0, 6:16, 0,255, 0,61, 0,57, 1, 0 >>, % some hello values

                       <<22, 3,3, 5:16, 92,64,37,228,209>> % garbage
                      ]),
    % Send unexpected change_cipher_spec
    ok = gen_tcp:send(Socket, <<20, 3,3, 12:16, 111,40,244,7,137,224,16,109,197,110,249,152>>),

    % Ensure we receive an alert, not sudden disconnect
    {ok, <<21, _/binary>>} = drop_handshakes(Socket, 1000).

%%--------------------------------------------------------------------
tls_tcp_error_propagation_in_active_mode() ->
    [{doc,"Test that process recives {ssl_error, Socket, closed} when tcp error ocurres"}].
tls_tcp_error_propagation_in_active_mode(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),

    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),

    Server  = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
					 {from, self()},
					 {mfa, {ssl_test_lib, no_result, []}},
					 {options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    {Client, #sslsocket{pid=[Pid|_]} = SslSocket} = ssl_test_lib:start_client([return_socket,
                                                                               {node, ClientNode}, {port, Port},
                                                                               {host, Hostname},
                                                                               {from, self()},
                                                                               {mfa, {?MODULE, receive_msg, []}},
                                                                               {options, ClientOpts}]),
    
    {status, _, _, StatusInfo} = sys:get_status(Pid),
    [_, _,_, _, Prop] = StatusInfo,
    State = ssl_test_lib:state(Prop),
    StaticEnv = element(2, State),
    Socket = element(11, StaticEnv),
    %% Fake tcp error
    Pid ! {tcp_error, Socket, etimedout},

    ssl_test_lib:check_result(Client, {ssl_closed, SslSocket}).

%%--------------------------------------------------------------------
peername() ->
    [{doc,"Test API function peername/1"}].

peername(Config) when is_list(Config) -> 
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, peername_result, []}},
			   {options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
					{from, self()}, 
					{mfa, {?MODULE, peername_result, []}},
					{options, [{port, 0} | ClientOpts]}]),
    
    ClientPort = ssl_test_lib:inet_port(Client),
    ServerIp = ssl_test_lib:node_to_hostip(ServerNode, server),
    ClientIp = ssl_test_lib:node_to_hostip(ClientNode, client),
    ServerMsg = {ok, {ClientIp, ClientPort}},
    ClientMsg = {ok, {ServerIp, Port}},

    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
		       [self(), Client, Server]),

    ssl_test_lib:check_result(Server, ServerMsg, Client, ClientMsg),
    
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).

%%--------------------------------------------------------------------
sockname() ->
    [{doc,"Test API function sockname/1"}].
sockname(Config) when is_list(Config) -> 
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, sockname_result, []}},
			   {options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
                                        {from, self()}, 
                                        {mfa, {?MODULE, sockname_result, []}},
                                        {options, [{port, 0} | ClientOpts]}]),
                                       
    ClientPort = ssl_test_lib:inet_port(Client),
    ServerIp = ssl_test_lib:node_to_hostip(ServerNode, server),
    ClientIp = ssl_test_lib:node_to_hostip(ClientNode, client),
    ServerMsg = {ok, {ServerIp, Port}},
    ClientMsg = {ok, {ClientIp, ClientPort}},
			   
    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
			 [self(), Client, Server]),
    
    ssl_test_lib:check_result(Server, ServerMsg, Client, ClientMsg),
    
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client).
%%--------------------------------------------------------------------
tls_server_handshake_timeout() ->
    [{doc,"Test server handshake timeout"}].

tls_server_handshake_timeout(Config) ->
    process_flag(trap_exit, true),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {_, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
					{from, self()},
					{timeout, 5000},
					{mfa, {ssl_test_lib,
					       no_result_msg, []}},
					{options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    {ok, CSocket} = gen_tcp:connect(Hostname, Port, [binary, {active, true}]),

    receive
	{tcp_closed, CSocket} ->
	    ssl_test_lib:check_result(Server, {error, timeout}),
	    receive
		{'EXIT', Server, _} ->
		    %% Make sure supervisor had time to react on process exit
		    %% Could we come up with a better solution to this?
		    ct:sleep(500), 
		    [] = supervisor:which_children(tls_connection_sup)
	    end
    end.
transport_close() ->
    [{doc, "Test what happens if socket is closed on TCP level after a while of normal operation"}].
transport_close(Config) when is_list(Config) -> 
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server = 
	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
				   {from, self()}, 
				   {mfa, {ssl_test_lib, send_recv_result, []}},
				   {options,  [{active, false} | ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    {ok, TcpS} = rpc:call(ClientNode, gen_tcp, connect, 
			  [Hostname,Port,[binary, {active, false}]]),
    {ok, SslS} = rpc:call(ClientNode, ssl, connect, 
			  [TcpS,[{active, false}|ClientOpts]]),
    
    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
		       [self(), self(), Server]),
    ok = ssl:send(SslS, "Hello world"),      
    {ok,<<"Hello world">>} = ssl:recv(SslS, 11),    
    gen_tcp:close(TcpS),    
    {error, _} = ssl:send(SslS, "Hello world").

%%--------------------------------------------------------------------
ssl3_cipher_suite_limitation()  ->
    [{doc,"Test a SSLv3 client cannot negotiate a TLSv* cipher suite."}].
ssl3_cipher_suite_limitation(Config) when is_list(Config) ->
    
    {_ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    
    Server = ssl_test_lib:start_server_error([{node, ServerNode}, {port, 0},
					      {from, self()},
					      {options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    
    {ok, Socket} = gen_tcp:connect(Hostname, Port, [binary, {active, false}]),
    ok = gen_tcp:send(Socket, 
		      <<22, 3,0, 49:16, % handshake, SSL 3.0, length
			1, 45:24, % client_hello, length
			3,0, % SSL 3.0
			16#deadbeef:256, % 32 'random' bytes = 256 bits
			0, % no session ID
			%% three cipher suites -- null, one with sha256 hash and one with sha hash
			6:16, 0,255, 0,61, 0,57, 
			1, 0 % no compression
		      >>),
    {ok, <<22, RecMajor:8, RecMinor:8, _RecLen:16, 2, HelloLen:24>>} = gen_tcp:recv(Socket, 9, 10000),
    {ok, <<HelloBin:HelloLen/binary>>} = gen_tcp:recv(Socket, HelloLen, 5000),
    ServerHello = tls_handshake:decode_handshake({RecMajor, RecMinor}, 2, HelloBin),
    case ServerHello of
	#server_hello{server_version = {3,0}, cipher_suite = <<0,57>>} -> 
	    ok;
	_ ->
	    ct:fail({unexpected_server_hello, ServerHello})
    end.
%%--------------------------------------------------------------------
emulated_options() ->
    [{doc,"Test API function getopts/2 and setopts/2"}].

emulated_options(Config) when is_list(Config) -> 
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Values = [{mode, list}, {packet, 0}, {header, 0},
		      {active, true}],    
    %% Shall be the reverse order of Values! 
    Options = [active, header, packet, mode],
    
    NewValues = [{mode, binary}, {active, once}],
    %% Shall be the reverse order of NewValues! 
    NewOptions = [active, mode],
    
    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
			   {mfa, {?MODULE, tls_socket_options_result, 
				  [Options, Values, NewOptions, NewValues]}},
			   {options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server),
    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					{host, Hostname},
			   {from, self()}, 
			   {mfa, {?MODULE, tls_socket_options_result, 
				  [Options, Values, NewOptions, NewValues]}},
			   {options, ClientOpts}]),
    
    ssl_test_lib:check_result(Server, ok, Client, ok),

    ssl_test_lib:close(Server),
    
    {ok, Listen} = ssl:listen(0, ServerOpts),
    {ok,[{mode,list}]} = ssl:getopts(Listen, [mode]),
    ok = ssl:setopts(Listen, [{mode, binary}]),
    {ok,[{mode, binary}]} = ssl:getopts(Listen, [mode]),
    {ok,[{recbuf, _}]} = ssl:getopts(Listen, [recbuf]),
    ssl:close(Listen).
accept_pool() ->
    [{doc,"Test having an accept pool."}].
accept_pool(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),  

    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server0 = ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
					{from, self()}, 
					{accepters, 3},
					{mfa, {ssl_test_lib, send_recv_result_active, []}},
					{options, ServerOpts}]),
    Port = ssl_test_lib:inet_port(Server0),
    [Server1, Server2] = ssl_test_lib:accepters(2),

    Client0 = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					 {host, Hostname},
					 {from, self()}, 
					 {mfa, {ssl_test_lib, send_recv_result_active, []}},
					 {options, ClientOpts}
					]),
    
    Client1 = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					 {host, Hostname},
					 {from, self()}, 
					 {mfa, {ssl_test_lib, send_recv_result_active, []}},
					 {options, ClientOpts}
					]),
    
    Client2 = ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
					 {host, Hostname},
					 {from, self()}, 
					 {mfa, {ssl_test_lib, send_recv_result_active, []}},
					 {options, ClientOpts}
					]),

    ssl_test_lib:check_ok([Server0, Server1, Server2, Client0, Client1, Client2]),
    
    ssl_test_lib:close(Server0),
    ssl_test_lib:close(Server1),
    ssl_test_lib:close(Server2),
    ssl_test_lib:close(Client0),
    ssl_test_lib:close(Client1),
    ssl_test_lib:close(Client2).

%%--------------------------------------------------------------------
reuseaddr() ->
    [{doc,"Test reuseaddr option"}].

reuseaddr(Config) when is_list(Config) ->
    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
    Server =
	ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
				   {from, self()},
				   {mfa, {ssl_test_lib, no_result, []}},
				   {options,  [{active, false}, {reuseaddr, true}| ServerOpts]}]),
    Port = ssl_test_lib:inet_port(Server),
    Client =
	ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
				   {host, Hostname},
				   {from, self()},
				   {mfa, {ssl_test_lib, no_result, []}},
				   {options, [{active, false} | ClientOpts]}]),
    ssl_test_lib:close(Server),
    ssl_test_lib:close(Client),
    
    Server1 =
	ssl_test_lib:start_server([{node, ServerNode}, {port, Port},
				   {from, self()},
				   {mfa, {ssl_test_lib, send_recv_result, []}},
				   {options,  [{active, false}, {reuseaddr, true} | ServerOpts]}]),
    Client1 =
	ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
				   {host, Hostname},
				   {from, self()},
				   {mfa, {ssl_test_lib, send_recv_result, []}},
				   {options, [{active, false} | ClientOpts]}]),

    ssl_test_lib:check_result(Server1, ok, Client1, ok),
    ssl_test_lib:close(Server1),
    ssl_test_lib:close(Client1).

%%--------------------------------------------------------------------
%% Internal functions ------------------------------------------------
%%--------------------------------------------------------------------

upgrade_result(Socket) ->
    ssl:setopts(Socket, [{active, true}]),
    ok = ssl:send(Socket, "Hello world"),
    %% Make sure binary is inherited from tcp socket and that we do
    %% not get the list default!
    receive 
	{ssl, _, <<"H">>} ->
	    receive 
		{ssl, _, <<"ello world">>} ->
		    ok
	    end;
	{ssl, _, <<"Hello world">>}  ->
	    ok
    end.
tls_downgrade_result(Socket, Pid) ->
    ok = ssl_test_lib:send_recv_result(Socket),
    Pid ! {self(), ready},
    receive 
        go ->
            ok
    end,
    case ssl:close(Socket, {self(), 10000})  of
	{ok, TCPSocket} -> 
            inet:setopts(TCPSocket, [{active, true}]),
	    gen_tcp:send(TCPSocket, "Downgraded"),
            receive 
                {tcp, TCPSocket, <<"Downgraded">>} ->
	             ok;
                {tcp_closed, TCPSocket} ->
                    ct:fail("Did not receive TCP data"),
	            ok;
	        Other ->
                    {error, Other}
            end;
	{error, timeout} ->
	    ct:comment("Timed out, downgrade aborted"),
	    ok;
	Fail ->
            ct:fail(Fail)
    end.

tls_shutdown_result(Socket, server) ->
    ssl:send(Socket, "Hej"),
    ok = ssl:shutdown(Socket, write),
    {ok, "Hej hopp"} = ssl:recv(Socket, 8),
    ok;

tls_shutdown_result(Socket, client) ->
    ssl:send(Socket, "Hej hopp"),
    ok = ssl:shutdown(Socket, write),
    {ok, "Hej"} = ssl:recv(Socket, 3),
    ok.

tls_shutdown_write_result(Socket, server) ->
    ct:sleep(?SLEEP),
    ssl:shutdown(Socket, write);
tls_shutdown_write_result(Socket, client) ->
    ssl:recv(Socket, 0).

tls_shutdown_both_result(Socket, server) ->
    ct:sleep(?SLEEP),
    ssl:shutdown(Socket, read_write);
tls_shutdown_both_result(Socket, client) ->
    ssl:recv(Socket, 0).

tls_closed_in_active_once_loop(Socket) ->
    case ssl:setopts(Socket, [{active, once}]) of
        ok ->
            receive
                {ssl, Socket, _} ->
                    tls_closed_in_active_once_loop(Socket);
                {ssl_closed, Socket} ->
                    ok
            after 5000 ->
                    no_ssl_closed_received
            end;
        {error, closed} ->
            ok
    end.

drop_handshakes(Socket, Timeout) ->
    {ok, <<RecType:8, _RecMajor:8, _RecMinor:8, RecLen:16>> = Header} = gen_tcp:recv(Socket, 5, Timeout),
    {ok, <<Frag:RecLen/binary>>} = gen_tcp:recv(Socket, RecLen, Timeout),
    case RecType of
        22 -> drop_handshakes(Socket, Timeout);
        _ -> {ok, <<Header/binary, Frag/binary>>}
    end.

receive_msg(_) ->
    receive
	Msg ->
	   Msg
    end.
 
sockname_result(S) ->
    ssl:sockname(S).

peername_result(S) ->
    ssl:peername(S).

tls_socket_options_result(Socket, Options, DefaultValues, NewOptions, NewValues) ->
    %% Test get/set emulated opts
    {ok, DefaultValues} = ssl:getopts(Socket, Options), 
    ssl:setopts(Socket, NewValues),
    {ok, NewValues} = ssl:getopts(Socket, NewOptions),
    %% Test get/set inet opts
    {ok,[{nodelay,false}]} = ssl:getopts(Socket, [nodelay]),  
    ssl:setopts(Socket, [{nodelay, true}]),
    {ok,[{nodelay, true}]} = ssl:getopts(Socket, [nodelay]),
    {ok, All} = ssl:getopts(Socket, []),
    ct:log("All opts ~p~n", [All]),
    ok.