path: root/lib/ssh/test/ssh_basic_SUITE.erl

%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2015. 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(ssh_basic_SUITE).

-include_lib("common_test/include/ct.hrl").
-include_lib("kernel/include/inet.hrl").
-include_lib("kernel/include/file.hrl").

%% Note: This directive should only be used in test suites.
%%-compile(export_all).

%%% Test cases
-export([
	 app_test/1, 
	 appup_test/1,
	 cli/1,
	 close/1,
	 daemon_already_started/1, 
	 double_close/1, 
	 exec/1,
	 exec_compressed/1,  
	 idle_time/1,
	 inet6_option/1,
	 inet_option/1,
	 internal_error/1,
	 known_hosts/1,  
	 misc_ssh_options/1,
	 openssh_zlib_basic_test/1,  
	 packet_size_zero/1, 
	 pass_phrase/1,
	 peername_sockname/1, 
	 send/1,
	 shell/1,
	 shell_no_unicode/1,
	 shell_unicode_string/1, 
	 ssh_info_print/1
	]).

%%% Common test callbacks
-export([suite/0, all/0, groups/0, 
	 init_per_suite/1, end_per_suite/1, 
	 init_per_group/2, end_per_group/2, 
	 init_per_testcase/2, end_per_testcase/2
	]).

-define(NEWLINE, <<"\r\n">>).

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

suite() ->
    [{ct_hooks,[ts_install_cth]}].

all() -> 
    [app_test,
     appup_test,
     {group, dsa_key},
     {group, rsa_key},
     {group, dsa_pass_key},
     {group, rsa_pass_key},
     {group, internal_error},
     daemon_already_started,
     double_close,
     packet_size_zero,
     ssh_info_print
    ].

groups() ->
    [{dsa_key, [], basic_tests()},
     {rsa_key, [], basic_tests()},
     {dsa_pass_key, [], [pass_phrase]},
     {rsa_pass_key, [], [pass_phrase]},
     {internal_error, [], [internal_error]}
    ].


basic_tests() ->
    [send, close, peername_sockname,
     exec, exec_compressed, 
     shell, shell_no_unicode, shell_unicode_string,
     cli, known_hosts, 
     idle_time, openssh_zlib_basic_test, 
     misc_ssh_options, inet_option, inet6_option].


%%--------------------------------------------------------------------
init_per_suite(Config) ->
    catch crypto:stop(),
    case catch crypto:start() of
	ok ->
	    Config;
	_Else ->
	    {skip, "Crypto could not be started!"}
    end.
end_per_suite(_Config) ->
    ssh:stop(),
    crypto:stop().
%%--------------------------------------------------------------------
init_per_group(hardening_tests, Config) ->
    init_per_group(dsa_key, Config);
init_per_group(dsa_key, Config) ->
    DataDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:setup_dsa(DataDir, PrivDir),
    Config;
init_per_group(rsa_key, Config) ->
    DataDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:setup_rsa(DataDir, PrivDir),
    Config;
init_per_group(rsa_pass_key, Config) ->
    DataDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:setup_rsa_pass_pharse(DataDir, PrivDir, "Password"),
    [{pass_phrase, {rsa_pass_phrase, "Password"}}| Config];
init_per_group(dsa_pass_key, Config) ->
    DataDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:setup_dsa_pass_pharse(DataDir, PrivDir, "Password"),
    [{pass_phrase, {dsa_pass_phrase, "Password"}}| Config];
init_per_group(internal_error, Config) ->
    DataDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:setup_dsa(DataDir, PrivDir),
    file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
    Config;
init_per_group(dir_options, Config) ->
    PrivDir = ?config(priv_dir, Config),
    %% Make unreadable dir:
    Dir_unreadable = filename:join(PrivDir, "unread"),
    ok = file:make_dir(Dir_unreadable),
    {ok,F1} = file:read_file_info(Dir_unreadable),
    ok = file:write_file_info(Dir_unreadable, 
			      F1#file_info{mode = F1#file_info.mode band (bnot 8#00444)}),
    %% Make readable file:
    File_readable = filename:join(PrivDir, "file"),
    ok = file:write_file(File_readable, <<>>),

    %% Check:
    case {file:read_file_info(Dir_unreadable), 
	  file:read_file_info(File_readable)} of
	{{ok, Id=#file_info{type=directory, access=Md}},
	 {ok, If=#file_info{type=regular,   access=Mf}}} ->
	    AccessOK =
		case {Md,                Mf} of
		    {read,               _} -> false;
		    {read_write,         _} -> false;
		    {_,               read} -> true;
		    {_,         read_write} -> true;
		    _ -> false
		end,

	    case AccessOK of
		true ->
		    %% Save:
		    [{unreadable_dir, Dir_unreadable},
		     {readable_file, File_readable} 
		     | Config];
		false ->
		    ct:log("File#file_info : ~p~n"
			   "Dir#file_info  : ~p",[If,Id]),
		    {skip, "File or dir mode settings failed"}
	    end;

	NotDirFile ->
	    ct:log("{Dir,File} -> ~p",[NotDirFile]),
	    {skip, "File/Dir creation failed"}
    end;
init_per_group(_, Config) ->
    Config.

end_per_group(hardening_tests, Config) ->
    end_per_group(dsa_key, Config);
end_per_group(dsa_key, Config) ->
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:clean_dsa(PrivDir),
    Config;
end_per_group(rsa_key, Config) ->
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:clean_rsa(PrivDir),
    Config;
end_per_group(dsa_pass_key, Config) ->
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:clean_dsa(PrivDir),
    Config;
end_per_group(rsa_pass_key, Config) ->
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:clean_rsa(PrivDir),
    Config;
end_per_group(internal_error, Config) ->
    PrivDir = ?config(priv_dir, Config),
    ssh_test_lib:clean_dsa(PrivDir),
    Config;

end_per_group(_, Config) ->
    Config.
%%--------------------------------------------------------------------
init_per_testcase(TC, Config) when TC==shell_no_unicode ; 
				   TC==shell_unicode_string ->
    PrivDir = ?config(priv_dir, Config),
    UserDir = ?config(priv_dir, Config),
    SysDir =  ?config(data_dir, Config),
    ssh:start(),
    Sftpd = {_Pid, _Host, Port} =       
	ssh_test_lib:daemon([{system_dir, SysDir},
			     {user_dir, PrivDir},
			     {user_passwords, [{"foo", "bar"}]}]),
    ct:sleep(500),
    IO = ssh_test_lib:start_io_server(),
    Shell = ssh_test_lib:start_shell(Port, IO, UserDir,
				     [{silently_accept_hosts, true},
				      {user,"foo"},{password,"bar"}]),
    ct:log("IO=~p, Shell=~p, self()=~p",[IO,Shell,self()]),
    ct:log("file:native_name_encoding() = ~p,~nio:getopts() = ~p",
	   [file:native_name_encoding(),io:getopts()]),
    wait_for_erlang_first_line([{io,IO}, {shell,Shell}, {sftpd, Sftpd}  | Config]);
init_per_testcase(_TestCase, Config) ->
    ssh:start(),
    Config.

end_per_testcase(TestCase, Config) when TestCase == server_password_option;
					TestCase == server_userpassword_option ->
    UserDir = filename:join(?config(priv_dir, Config), nopubkey),
    ssh_test_lib:del_dirs(UserDir),
    end_per_testcase(Config);
end_per_testcase(TC, Config) when TC==shell_no_unicode ; 
				  TC==shell_unicode_string ->
    case ?config(sftpd, Config) of
	{Pid, _, _} ->
	    ssh:stop_daemon(Pid),
	    ssh:stop();
	_ ->
	    ssh:stop()
    end;
end_per_testcase(_TestCase, Config) ->
    end_per_testcase(Config).
end_per_testcase(_Config) ->    
    ssh:stop(),
    ok.

%%--------------------------------------------------------------------
%% Test Cases --------------------------------------------------------
%%--------------------------------------------------------------------
%%% Application consistency test.
app_test(Config) when is_list(Config) ->
    ?t:app_test(ssh),
    ok.
%%--------------------------------------------------------------------
%%% Appup file consistency test.
appup_test(Config) when is_list(Config) ->
    ok = ?t:appup_test(ssh).
%%--------------------------------------------------------------------
%%% Test that we can set some misc options not tested elsewhere
%%% some options not yet present are not decided if we should support or
%%% if they need thier own test case.
misc_ssh_options(Config) when is_list(Config) ->  
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    CMiscOpt0 = [{connect_timeout, 1000}, {user_dir, UserDir}],
    CMiscOpt1 = [{connect_timeout, infinity}, {user_dir, UserDir}],
    SMiscOpt0 =  [{user_dir, UserDir}, {system_dir, SystemDir}],
    SMiscOpt1 =  [{user_dir, UserDir}, {system_dir, SystemDir}],

    basic_test([{client_opts, CMiscOpt0}, {server_opts, SMiscOpt0}]),
    basic_test([{client_opts, CMiscOpt1}, {server_opts, SMiscOpt1}]).

%%--------------------------------------------------------------------
%%% Test configuring IPv4
inet_option(Config) when is_list(Config) ->   
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    ClientOpts =  [{silently_accept_hosts, true},
		   {user_dir, UserDir},
		   {user_interaction, false}],
    ServerOpts = [{system_dir, SystemDir},
		  {user_dir, UserDir},
		  {failfun, fun ssh_test_lib:failfun/2}], 

    basic_test([{client_opts, [{inet, inet} | ClientOpts]}, 
		{server_opts, [{inet, inet} | ServerOpts]}]).

%%--------------------------------------------------------------------
%%% Test configuring IPv6
inet6_option(Config) when is_list(Config) ->   
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    ClientOpts =  [{silently_accept_hosts, true},
		   {user_dir, UserDir},
		   {user_interaction, false}],
    ServerOpts = [{system_dir, SystemDir},
		  {user_dir, UserDir},
		  {failfun, fun ssh_test_lib:failfun/2}], 

    basic_test([{client_opts, [{inet, inet6} | ClientOpts]}, 
		{server_opts, [{inet, inet6} | ServerOpts]}]).

%%--------------------------------------------------------------------
%%% Test api function ssh_connection:exec
exec(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false}]),
    {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity),
    success = ssh_connection:exec(ConnectionRef, ChannelId0,
				  "1+1.", infinity),
    Data0 = {ssh_cm, ConnectionRef, {data, ChannelId0, 0, <<"2\n">>}},
    case ssh_test_lib:receive_exec_result(Data0) of
	expected ->
	    ok;
	Other0 ->
	    ct:fail(Other0)
    end,
    ssh_test_lib:receive_exec_end(ConnectionRef, ChannelId0),

    %% Test that it is possible to start a new channel and
    %% run an other exec on the same connection.
    {ok, ChannelId1} = ssh_connection:session_channel(ConnectionRef, infinity),
    success = ssh_connection:exec(ConnectionRef, ChannelId1,
				  "2+2.", infinity),
    Data1 = {ssh_cm, ConnectionRef, {data, ChannelId1, 0, <<"4\n">>}},
    case ssh_test_lib:receive_exec_result(Data1) of
	expected ->
	    ok;
	Other1 ->
	    ct:fail(Other1)
    end,
    ssh_test_lib:receive_exec_end(ConnectionRef, ChannelId1),
    ssh:stop_daemon(Pid).

%%--------------------------------------------------------------------
%%% Test that compression option works
exec_compressed(Config) when is_list(Config) ->
    case ssh_test_lib:ssh_supports(zlib, compression) of
	false ->
	    {skip, "zlib compression is not supported"};

	true ->
	    process_flag(trap_exit, true),
	    SystemDir = filename:join(?config(priv_dir, Config), system),
	    UserDir = ?config(priv_dir, Config), 

	    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},{user_dir, UserDir},
						     {preferred_algorithms,[{compression, [zlib]}]},
						     {failfun, fun ssh_test_lib:failfun/2}]),
    
	    ConnectionRef =
		ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
						  {user_dir, UserDir},
						  {user_interaction, false}]),
	    {ok, ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity),
	    success = ssh_connection:exec(ConnectionRef, ChannelId,
					  "1+1.", infinity),
	    Data = {ssh_cm, ConnectionRef, {data, ChannelId, 0, <<"2\n">>}},
	    case ssh_test_lib:receive_exec_result(Data) of
		expected ->
		    ok;
		Other ->
		    ct:fail(Other)
	    end,
	    ssh_test_lib:receive_exec_end(ConnectionRef, ChannelId),
	    ssh:stop_daemon(Pid)
    end.

%%--------------------------------------------------------------------
%%% Idle timeout test
idle_time(Config) ->
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),

    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false},
					  {idle_time, 2000}]),
    {ok, Id} = ssh_connection:session_channel(ConnectionRef, 1000),
    ssh_connection:close(ConnectionRef, Id),
    receive
    after 10000 ->
	    {error, closed} = ssh_connection:session_channel(ConnectionRef, 1000)
    end,
    ssh:stop_daemon(Pid).

%%--------------------------------------------------------------------
%%% Test that ssh:shell/2 works
shell(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
   
    {_Pid, _Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},{user_dir, UserDir},
					       {failfun, fun ssh_test_lib:failfun/2}]),
    ct:sleep(500),

    IO = ssh_test_lib:start_io_server(),
    Shell = ssh_test_lib:start_shell(Port, IO, UserDir),
    receive
	{'EXIT', _, _} ->
	    ct:fail(no_ssh_connection);  
	ErlShellStart ->
	    ct:log("Erlang shell start: ~p~n", [ErlShellStart]),
	    do_shell(IO, Shell)
    end.
    
%%--------------------------------------------------------------------
cli(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
   
    {_Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},{user_dir, UserDir},
					       {password, "morot"},
					       {ssh_cli, {ssh_test_cli, [cli]}}, 
					       {subsystems, []},
					       {failfun, fun ssh_test_lib:failfun/2}]),
    ct:sleep(500),
    
    ConnectionRef = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
						      {user, "foo"},
						      {password, "morot"},
						      {user_interaction, false},
						      {user_dir, UserDir}]),
    
    {ok, ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity),
    ssh_connection:shell(ConnectionRef, ChannelId),
    ok = ssh_connection:send(ConnectionRef, ChannelId, <<"q">>),
    receive 
	{ssh_cm, ConnectionRef,
	 {data,0,0, <<"\r\nYou are accessing a dummy, type \"q\" to exit\r\n\n">>}} ->
	    ok = ssh_connection:send(ConnectionRef, ChannelId, <<"q">>)
    end,
    
    receive 
     	{ssh_cm, ConnectionRef,{closed, ChannelId}} ->
     	    ok
    end.

%%--------------------------------------------------------------------
%%% Test that get correct error message if you try to start a daemon
%%% on an adress that already runs a daemon see also seq10667
daemon_already_started(Config) when is_list(Config) ->
    SystemDir = ?config(data_dir, Config),
    UserDir = ?config(priv_dir, Config),

    {Pid, _Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					      {user_dir, UserDir},
					      {failfun, fun ssh_test_lib:failfun/2}]),
    {error, eaddrinuse} = ssh_test_lib:daemon(Port, [{system_dir, SystemDir},
						     {user_dir, UserDir},
						     {failfun,
						      fun ssh_test_lib:failfun/2}]),
    ssh:stop_daemon(Pid).

%%--------------------------------------------------------------------
%%% check that known_hosts is updated correctly
known_hosts(Config) when is_list(Config) ->
    SystemDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config), 
    
    {Pid, Host, Port} = ssh_test_lib:daemon([{user_dir, PrivDir},{system_dir, SystemDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),

    KnownHosts = filename:join(PrivDir, "known_hosts"),
    file:delete(KnownHosts),
    {error, enoent} = file:read_file(KnownHosts),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{user_dir, PrivDir},
					  {user_interaction, false},
					  silently_accept_hosts]),
    {ok, _Channel} = ssh_connection:session_channel(ConnectionRef, infinity),
    ok = ssh:close(ConnectionRef),
    {ok, Binary} = file:read_file(KnownHosts),
    Lines = string:tokens(binary_to_list(Binary), "\n"),
    [Line] = Lines,
    [HostAndIp, Alg, _KeyData] = string:tokens(Line, " "),
    [Host, _Ip] = string:tokens(HostAndIp, ","),
    "ssh-" ++ _ = Alg,
    ssh:stop_daemon(Pid).
%%--------------------------------------------------------------------

%%% Test that we can use keyes protected by pass phrases
pass_phrase(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    PhraseArg = ?config(pass_phrase, Config),

    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  PhraseArg,
					  {user_dir, UserDir},
					  {user_interaction, false}]),
    {ok, _ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity),
    ssh:stop_daemon(Pid).


%%--------------------------------------------------------------------
%%% Test that client does not hang if disconnects due to internal error
internal_error(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
                                             {user_dir, UserDir},
                                             {failfun, fun ssh_test_lib:failfun/2}]),
    {error, Error} =
        ssh:connect(Host, Port, [{silently_accept_hosts, true},
                                 {user_dir, UserDir},
                                 {user_interaction, false}]),
    check_error(Error),
    ssh:stop_daemon(Pid).

%%--------------------------------------------------------------------
%%% Test ssh_connection:send/3
send(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),

    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false}]),
    {ok, ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity),
    ok = ssh_connection:send(ConnectionRef, ChannelId, <<"Data">>),
    ok = ssh_connection:send(ConnectionRef, ChannelId, << >>),
    ssh:stop_daemon(Pid).


%%--------------------------------------------------------------------
%%% Test ssh:connection_info([peername, sockname])
peername_sockname(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),

    {_Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {subsystems, [{"peername_sockname",
							    {ssh_peername_sockname_server, []}}
							  ]}
					    ]),
    ConnectionRef =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false}]),
    {ok, ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity),
    success = ssh_connection:subsystem(ConnectionRef, ChannelId, "peername_sockname", infinity),
    [{peer, {_Name, {HostPeerClient,PortPeerClient} = ClientPeer}}] =
	ssh:connection_info(ConnectionRef, [peer]),
    [{sockname, {HostSockClient,PortSockClient} = ClientSock}] =
	ssh:connection_info(ConnectionRef, [sockname]),
    ct:log("Client: ~p ~p", [ClientPeer, ClientSock]),
    receive
	{ssh_cm, ConnectionRef, {data, ChannelId, _, Response}} ->
	    {PeerNameSrv,SockNameSrv} = binary_to_term(Response),
	    {HostPeerSrv,PortPeerSrv} = PeerNameSrv,
	    {HostSockSrv,PortSockSrv} = SockNameSrv,
	    ct:log("Server: ~p ~p", [PeerNameSrv, SockNameSrv]),
	    host_equal(HostPeerSrv, HostSockClient),
	    PortPeerSrv = PortSockClient,
	    host_equal(HostSockSrv, HostPeerClient),
	    PortSockSrv = PortPeerClient,
	    host_equal(HostSockSrv, Host),
	    PortSockSrv = Port
    after 10000 ->
	    throw(timeout)
    end.

host_equal(H1, H2) ->
    not ordsets:is_disjoint(ips(H1), ips(H2)).

ips(IP) when is_tuple(IP) -> ordsets:from_list([IP]);
ips(Name) when is_list(Name) ->
    {ok,#hostent{h_addr_list=IPs4}} = inet:gethostbyname(Name,inet),
    {ok,#hostent{h_addr_list=IPs6}} = inet:gethostbyname(Name,inet6),
    ordsets:from_list(IPs4++IPs6).

%%--------------------------------------------------------------------

%%% Client receives close when server closes
close(Config) when is_list(Config) ->
    process_flag(trap_exit, true),
    SystemDir = filename:join(?config(priv_dir, Config), system),
    UserDir = ?config(priv_dir, Config),
    
    {Server, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    Client =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false}]),
    {ok, ChannelId} = ssh_connection:session_channel(Client, infinity),
    
    ssh:stop_daemon(Server),
    receive 
	{ssh_cm, Client,{closed, ChannelId}} ->  
	    ok
    after 5000 ->
	    ct:fail(timeout)
    end.

%%--------------------------------------------------------------------
%%% Simulate that we try to close an already closed connection
double_close(Config) when is_list(Config) ->
    SystemDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config), 
    UserDir = filename:join(PrivDir, nopubkey), % to make sure we don't use public-key-auth
    file:make_dir(UserDir),

    {_Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
					     {user_dir, UserDir},
					     {user_passwords, [{"vego", "morot"}]},
					     {failfun, fun ssh_test_lib:failfun/2}]),
    {ok, CM} = ssh:connect(Host, Port, [{silently_accept_hosts, true},
					   {user_dir, UserDir},
					    {user, "vego"},
					    {password, "morot"},
					    {user_interaction, false}]),
    
    exit(CM, {shutdown, normal}),
    ok = ssh:close(CM).

%%--------------------------------------------------------------------
packet_size_zero(Config) ->
    SystemDir = ?config(data_dir, Config),
    PrivDir = ?config(priv_dir, Config), 
    UserDir = filename:join(PrivDir, nopubkey), % to make sure we don't use public-key-auth
    file:make_dir(UserDir),

    {Server, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
						{user_dir, UserDir},
						{user_passwords, [{"vego", "morot"}]}]),
    Conn =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user_dir, UserDir},
					  {user_interaction, false},
					  {user, "vego"},
					  {password, "morot"}]),

    {ok,Chan} = ssh_connection:session_channel(Conn, 1000, _MaxPacketSize=0, 60000),
    ok = ssh_connection:shell(Conn, Chan),

    ssh:close(Conn),
    ssh:stop_daemon(Server),

    receive
	{ssh_cm,Conn,{data,Chan,_Type,_Msg1}} = M ->
	    ct:log("Got ~p",[M]),
	    ct:fail(doesnt_obey_max_packet_size_0)
    after 5000 ->
	    ok
    end.    
    
%%--------------------------------------------------------------------
shell_no_unicode(Config) ->
    new_do_shell(?config(io,Config),
		 [new_prompt,
		  {type,"io:format(\"hej ~p~n\",[42])."},
		  {expect,"hej 42"}
		 ]).
	      
%%--------------------------------------------------------------------
shell_unicode_string(Config) ->
    new_do_shell(?config(io,Config),
		 [new_prompt,
		  {type,"io:format(\"こにちわ~ts~n\",[\"四二\"])."},
		  {expect,"こにちわ四二"},
		  {expect,"ok"}
		 ]).

%%--------------------------------------------------------------------
%%% Test basic connection with openssh_zlib
openssh_zlib_basic_test(Config) ->
    case ssh_test_lib:ssh_supports(['[email protected]',none], compression) of
	{false,L} ->
	    {skip, io_lib:format("~p compression is not supported",[L])};

	true ->
	    SystemDir = filename:join(?config(priv_dir, Config), system),
	    UserDir = ?config(priv_dir, Config),

	    {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
						     {user_dir, UserDir},
						     {preferred_algorithms,[{compression, ['[email protected]']}]},
						     {failfun, fun ssh_test_lib:failfun/2}]),
	    ConnectionRef =
		ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
						  {user_dir, UserDir},
						  {user_interaction, false},
						  {preferred_algorithms,[{compression, ['[email protected]',
											none]}]}
						 ]),
	    ok = ssh:close(ConnectionRef),
	    ssh:stop_daemon(Pid)
    end.

%%--------------------------------------------------------------------
ssh_info_print(Config) ->
    %% Just check that ssh_print:info() crashes
    PrivDir = ?config(priv_dir, Config),
    PrintFile = filename:join(PrivDir,info),
    UserDir = filename:join(PrivDir, nopubkey), % to make sure we don't use public-key-auth
    file:make_dir(UserDir),
    SysDir = ?config(data_dir, Config),

    Parent = self(),
    UnexpFun = fun(Msg,_Peer) ->
		       Parent ! {unexpected,Msg,self()},
		       skip
	       end,
    ConnFun = fun(_,_,_) -> Parent ! {connect,self()} end,

    {DaemonRef, Host, Port} = 
	ssh_test_lib:daemon([{system_dir, SysDir},
			     {user_dir, UserDir},
			     {password, "morot"},
			     {unexpectedfun, UnexpFun},
			     {connectfun, ConnFun},
			     {failfun, fun ssh_test_lib:failfun/2}]),
    ClientConnRef1 =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user, "foo"},
					  {password, "morot"},
					  {user_dir, UserDir},
					  {unexpectedfun, UnexpFun},
					  {user_interaction, false}]),
    ClientConnRef2 =
	ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true},
					  {user, "foo"},
					  {password, "morot"},
					  {user_dir, UserDir},
					  {unexpectedfun, UnexpFun},
					  {user_interaction, false}]),
    receive
	{connect,DaemonConnRef} ->
	    ct:log("DaemonRef=~p, DaemonConnRef=~p, ClientConnRefs=~p",[DaemonRef, DaemonConnRef, 
									[ClientConnRef1,ClientConnRef2]
								       ])
    after 2000 ->
	    ok
    end,

    {ok,D} = file:open(PrintFile, write),
    ssh_info:print(D),
    ok = file:close(D),

    {ok,Bin} = file:read_file(PrintFile),
    ct:log("~s",[Bin]),

    receive
	{unexpected, Msg, Pid} ->
	    ct:log("~p got unexpected msg ~p",[Pid,Msg]),
	    ct:log("process_info(~p) = ~n~p",[Pid,process_info(Pid)]),
	    ok = ssh:close(ClientConnRef1),
	    ok = ssh:close(ClientConnRef2),
	    ok = ssh:stop_daemon(DaemonRef),
	    {fail,"unexpected msg"}
    after 1000 ->
	    ok = ssh:close(ClientConnRef1),
	    ok = ssh:close(ClientConnRef2),
	    ok = ssh:stop_daemon(DaemonRef)
    end.


%%--------------------------------------------------------------------
%% Internal functions ------------------------------------------------
%%--------------------------------------------------------------------
%% Due to timing the error message may or may not be delivered to
%% the "tcp-application" before the socket closed message is recived
check_error("Invalid state") ->
    ok;
check_error("Connection closed") ->
    ok;
check_error("Selection of key exchange algorithm failed") ->
    ok;
check_error(Error) ->
    ct:fail(Error).

basic_test(Config) ->
    ClientOpts = ?config(client_opts, Config),
    ServerOpts = ?config(server_opts, Config),
    
    {Pid, Host, Port} = ssh_test_lib:daemon(ServerOpts),
    {ok, CM} = ssh:connect(Host, Port, ClientOpts),
    ok = ssh:close(CM),
    ssh:stop_daemon(Pid).

do_shell(IO, Shell) ->
    receive
	ErlPrompt0 ->
	    ct:log("Erlang prompt: ~p~n", [ErlPrompt0])
    end,
    IO ! {input, self(), "1+1.\r\n"},
     receive
	Echo0 ->
	     ct:log("Echo: ~p ~n", [Echo0])
    end,
    receive
	?NEWLINE ->
	    ok
    end,
    receive
	Result0 = <<"2">> ->
	    ct:log("Result: ~p~n", [Result0])
    end,
    receive
	?NEWLINE ->
	    ok
    end,
    receive
	ErlPrompt1 ->
	    ct:log("Erlang prompt: ~p~n", [ErlPrompt1])
    end,
    exit(Shell, kill).
    %%Does not seem to work in the testserver!
    %% 	IO ! {input, self(), "q().\r\n"},
    %% receive
    %%  	?NEWLINE ->
    %%  	    ok
    %% end,
    %% receive
    %%  	Echo1 ->
    %% 	    ct:log("Echo: ~p ~n", [Echo1])
    %% end,
    %% receive
    %% 	?NEWLINE ->
    %%  	    ok
    %% end,
    %% receive
    %%  	Result1 ->
    %%  	    ct:log("Result: ~p~n", [Result1])
    %%      end,
    %% receive
    %% 	{'EXIT', Shell, killed} ->
    %% 	    ok
    %% end.


%%--------------------------------------------------------------------
wait_for_erlang_first_line(Config) ->
    receive
	{'EXIT', _, _} ->
	    {fail,no_ssh_connection};
	<<"Eshell ",_/binary>> = _ErlShellStart ->
	    ct:log("Erlang shell start: ~p~n", [_ErlShellStart]),
	    Config;
	Other ->
	    ct:log("Unexpected answer from ssh server: ~p",[Other]),
	    {fail,unexpected_answer}
    after 10000 ->
	    ct:log("No answer from ssh-server"),
	    {fail,timeout}
    end.



new_do_shell(IO, List) -> new_do_shell(IO, 0, List).

new_do_shell(IO, N, [new_prompt|More]) ->
    new_do_shell(IO, N+1, More);

new_do_shell(IO, N, Ops=[{Order,Arg}|More]) ->
    Pfx = prompt_prefix(),
    PfxSize = size(Pfx),
    receive
	_X = <<"\r\n">> ->
	    ct:log("Skip newline ~p",[_X]),
	    new_do_shell(IO, N, Ops);
	
	<<Pfx:PfxSize/binary,P1,"> ">> when (P1-$0)==N -> 
	    new_do_shell_prompt(IO, N, Order, Arg, More);

	<<Pfx:PfxSize/binary,P1,P2,"> ">> when (P1-$0)*10 + (P2-$0) == N -> 
	    new_do_shell_prompt(IO, N, Order, Arg, More);

	<<Pfx:PfxSize/binary,P1,P2,P3,"> ">> when (P1-$0)*100 + (P2-$0)*10 + (P3-$0) == N -> 
	    new_do_shell_prompt(IO, N, Order, Arg, More);

	Err when element(1,Err)==error ->
	    ct:fail("new_do_shell error: ~p~n",[Err]);

	RecBin when Order==expect ; Order==expect_echo ->
	    ct:log("received ~p",[RecBin]),
	    RecStr = string:strip(unicode:characters_to_list(RecBin)),
	    ExpStr = string:strip(Arg),
	    case lists:prefix(ExpStr, RecStr) of
		true when Order==expect ->
		    ct:log("Matched ~ts",[RecStr]),
		    new_do_shell(IO, N, More);
		true when Order==expect_echo ->
		    ct:log("Matched echo ~ts",[RecStr]),
		    new_do_shell(IO, N, More);
		false ->
		    ct:fail("*** Expected ~p, but got ~p",[string:strip(ExpStr),RecStr])
	    end
    after 30000 ->
	    ct:log("Meassage queue of ~p:~n~p",
		   [self(), erlang:process_info(self(), messages)]),
	    case Order of
		expect -> ct:fail("timeout, expected ~p",[string:strip(Arg)]);
		type ->  ct:fail("timeout, no prompt")
	    end
    end;

new_do_shell(_, _, []) ->
    ok.

prompt_prefix() ->
    case node() of
	nonode@nohost -> <<>>;
	Node -> list_to_binary(
		  lists:concat(["(",Node,")"]))
    end.
	    

new_do_shell_prompt(IO, N, type, Str, More) ->
    ct:log("Matched prompt ~p to trigger sending of next line to server",[N]),
    IO ! {input, self(), Str++"\r\n"},
    ct:log("Promt '~p> ', Sent ~ts",[N,Str++"\r\n"]),
    new_do_shell(IO, N, [{expect_echo,Str}|More]); % expect echo of the sent line
new_do_shell_prompt(IO, N, Op, Str, More) ->
    ct:log("Matched prompt ~p",[N]),
    new_do_shell(IO, N, [{Op,Str}|More]).
  
%%--------------------------------------------------------------------