Merge branch 'maint'

Conflicts:
	OTP_VERSION
	lib/inets/test/httpd_SUITE.erl
	lib/inets/vsn.mk
	lib/ssh/src/ssh.erl
	lib/ssh/vsn.mk
	lib/ssl/src/ssl.appup.src
	lib/ssl/vsn.mk

5 files changed, 164 insertions, 16 deletions

diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index 579a3ae4a8..c77ee1e77a 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -29,6 +29,33 @@
     <file>notes.xml</file>
   </header>
 
+<section><title>Ssh 3.2.4</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Gracefully terminate if sockets is unexpectedly closed.</p>
+          <p>
+	    Own Id: OTP-12782</p>
+        </item>
+        <item>
+          <p>
+	    Made Codenomicon Defensics test suite pass: <list>
+	    <item>limit number of algorithms in kexinit
+	    message</item> <item>check 'e' and 'f' parameters in
+	    kexdh</item> <item>implement 'keyboard-interactive' user
+	    authentication on server side</item> <item> return plain
+	    text message to bad version exchange message</item>
+	    </list></p>
+          <p>
+	    Own Id: OTP-12784</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Ssh 3.2.3</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 57f7ae8b5e..10b526ba28 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -360,7 +360,13 @@ handle_option([{exec, _} = Opt | Rest], SocketOptions, SshOptions) ->
     handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
 handle_option([{auth_methods, _} = Opt | Rest], SocketOptions, SshOptions) ->
     handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+<<<<<<< HEAD
 handle_option([{preferred_algorithms,_} = Opt | Rest], SocketOptions, SshOptions) ->
+=======
+handle_option([{auth_method_kb_interactive_data, _} = Opt | Rest], SocketOptions, SshOptions) ->
+    handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+handle_option([{pref_public_key_algs, _} = Opt | Rest], SocketOptions, SshOptions) ->
+>>>>>>> maint
     handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
 handle_option([{quiet_mode, _} = Opt|Rest], SocketOptions, SshOptions) ->
     handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
@@ -429,6 +435,13 @@ handle_ssh_option({exec, Function} = Opt) when is_function(Function) ->
     Opt;
 handle_ssh_option({auth_methods, Value} = Opt)  when is_list(Value) ->
     Opt;
+handle_ssh_option({auth_method_kb_interactive_data, {Name,Instruction,Prompt,Echo}} = Opt) when is_list(Name),
+												is_list(Instruction),
+												is_list(Prompt),
+												is_boolean(Echo) ->
+    Opt;
+handle_ssh_option({auth_method_kb_interactive_data, F} = Opt) when is_function(F,3) ->
+    Opt;
 handle_ssh_option({infofun, Value} = Opt)  when is_function(Value) ->
     Opt;
 handle_ssh_option({connectfun, Value} = Opt) when is_function(Value) ->
diff --git a/lib/ssh/src/ssh_auth.erl b/lib/ssh/src/ssh_auth.erl
index 197808754c..df9a97c8f8 100644
--- a/lib/ssh/src/ssh_auth.erl
+++ b/lib/ssh/src/ssh_auth.erl
@@ -243,6 +243,54 @@ handle_userauth_request(#ssh_msg_userauth_request{user = User,
 
 handle_userauth_request(#ssh_msg_userauth_request{user = User,
 						  service = "ssh-connection",
+						  method = "keyboard-interactive",
+						  data = _},
+			_, #ssh{opts = Opts} = Ssh) ->
+    %% RFC4256
+    %% The data field contains:
+    %%   - language tag (deprecated). If =/=[] SHOULD use it however. We skip
+    %%                                it for simplicity.
+    %%   - submethods. "... the user can give a hint of which actual methods
+    %%                  he wants to use. ...".  It's a "MAY use" so we skip
+    %%                  it. It also needs an understanding between the client
+    %%                  and the server.
+    %%                  
+    %% "The server MUST reply with an SSH_MSG_USERAUTH_SUCCESS,
+    %%  SSH_MSG_USERAUTH_FAILURE, or SSH_MSG_USERAUTH_INFO_REQUEST message."
+    Default = {"SSH server",
+	       "Enter password for \""++User++"\"",
+	       "pwd: ",
+	       false},
+
+    {Name, Instruction, Prompt, Echo} =
+	case proplists:get_value(auth_method_kb_interactive_data, Opts) of
+	    undefined -> 
+		Default;
+	    {_,_,_,_}=V -> 
+		V;
+	    F when is_function(F) ->
+		{_,PeerName} = Ssh#ssh.peer,
+		F(PeerName, User, "ssh-connection")
+	end,
+    EchoEnc = case Echo of
+		  true -> <<?TRUE>>;
+		  false -> <<?FALSE>>
+	      end,
+    Msg = #ssh_msg_userauth_info_request{name = unicode:characters_to_list(Name),
+					 instruction = unicode:characters_to_list(Instruction),
+					 language_tag = "",
+					 num_prompts = 1,
+					 data = <<?STRING(unicode:characters_to_binary(Prompt)),
+						  EchoEnc/binary
+						>>
+					},
+    {not_authorized, {User, undefined}, 
+     ssh_transport:ssh_packet(Msg, Ssh#ssh{user = User,
+					   opts = [{max_kb_tries,3},{kb_userauth_info_msg,Msg}|Opts]
+					  })};
+
+handle_userauth_request(#ssh_msg_userauth_request{user = User,
+						  service = "ssh-connection",
 						  method = Other}, _,
 			#ssh{userauth_supported_methods = Methods} = Ssh) ->
     {not_authorized, {User, {authmethod, Other}}, 
@@ -264,6 +312,38 @@ handle_userauth_info_request(
        #ssh_msg_userauth_info_response{num_responses = NumPrompts,
 				       data = Responses}, Ssh)}.
 
+handle_userauth_info_response(#ssh_msg_userauth_info_response{num_responses = 1,
+							      data = <<?UINT32(Sz), Password:Sz/binary>>},
+			      #ssh{opts = Opts0,
+				   user = User} = Ssh) ->
+    NumTriesLeft = proplists:get_value(max_kb_tries, Opts0, 0) - 1,
+    Opts = lists:keydelete(max_kb_tries,1,Opts0),
+    case check_password(User, unicode:characters_to_list(Password), Opts) of
+	true ->
+	    {authorized, User,
+	     ssh_transport:ssh_packet(#ssh_msg_userauth_success{}, Ssh)};
+	false when NumTriesLeft > 0 ->
+	    UserAuthInfoMsg = 
+		(proplists:get_value(kb_userauth_info_msg,Opts))
+		#ssh_msg_userauth_info_request{name = "",
+					       instruction = 
+						   lists:concat(
+						     ["Bad user or password, try again. ",
+						      integer_to_list(NumTriesLeft),
+						      " tries left."])},
+	    {not_authorized, {User, undefined}, 
+	     ssh_transport:ssh_packet(UserAuthInfoMsg,
+				      Ssh#ssh{opts = [{max_kb_tries,NumTriesLeft}|Opts]})};
+	     
+	false ->
+	    {not_authorized, {User, {error,"Bad user or password"}}, 
+	     ssh_transport:ssh_packet(#ssh_msg_userauth_failure{
+					 authentications = "",
+					 partial_success = false}, 
+				      Ssh#ssh{opts = lists:keydelete(kb_userauth_info_msg,1,Opts)}
+				     )}
+    end;
+
 handle_userauth_info_response(#ssh_msg_userauth_info_response{},
 			      _Auth) ->
     throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index ca63d2194f..3bdca4ba94 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -333,22 +333,25 @@ info(ConnectionHandler, ChannelProcess) ->
 hello(socket_control, #state{socket = Socket, ssh_params = Ssh} = State) ->
     VsnMsg = ssh_transport:hello_version_msg(string_version(Ssh)),
     send_msg(VsnMsg, State),
-    {ok, [{recbuf, Size}]} = inet:getopts(Socket, [recbuf]),
-    inet:setopts(Socket, [{packet, line}, {active, once}, {recbuf, ?MAX_PROTO_VERSION}]),
-    {next_state, hello, State#state{recbuf = Size}};
+    case getopt(recbuf, Socket) of
+	{ok, Size} ->
+	    inet:setopts(Socket, [{packet, line}, {active, once}, {recbuf, ?MAX_PROTO_VERSION}]),
+	    {next_state, hello, State#state{recbuf = Size}};
+	{error, Reason} ->
+	    {stop, {shutdown, Reason}, State}
+    end;
 
 hello({info_line, _Line},#state{role = client, socket = Socket} = State) ->
     %% The server may send info lines before the version_exchange
     inet:setopts(Socket, [{active, once}]),
     {next_state, hello, State};
 
-hello({info_line, _Line},#state{role = server} = State) ->
-    DisconnectMsg =
-	#ssh_msg_disconnect{code =
-				?SSH_DISCONNECT_PROTOCOL_ERROR,
-			    description = "Did not receive expected protocol version exchange",
-			    language = "en"},
-    handle_disconnect(DisconnectMsg, State);
+hello({info_line, _Line},#state{role = server,
+				socket = Socket,
+				transport_cb = Transport } = State) ->
+    %% as openssh
+    Transport:send(Socket, "Protocol mismatch."),
+    {stop, {shutdown,"Protocol mismatch in version exchange."}, State};
 
 hello({version_exchange, Version}, #state{ssh_params = Ssh0,
 					  socket = Socket,
@@ -501,10 +504,21 @@ userauth(#ssh_msg_userauth_info_request{} = Msg,
     {next_state, userauth, next_packet(State#state{ssh_params = Ssh})};
 
 userauth(#ssh_msg_userauth_info_response{} = Msg, 
-	 #state{ssh_params = #ssh{role = server} = Ssh0} = State) ->
-    {ok, {Reply, Ssh}} = ssh_auth:handle_userauth_info_response(Msg, Ssh0),
-    send_msg(Reply, State),
-    {next_state, userauth, next_packet(State#state{ssh_params = Ssh})};
+	 #state{ssh_params = #ssh{role = server,
+				  peer = {_, Address}} = Ssh0,
+		opts = Opts, starter = Pid} = State) ->
+    case ssh_auth:handle_userauth_info_response(Msg, Ssh0) of
+	{authorized, User, {Reply, Ssh}} ->
+	    send_msg(Reply, State),
+	    Pid ! ssh_connected,
+	    connected_fun(User, Address, "keyboard-interactive", Opts),
+	    {next_state, connected, 
+	     next_packet(State#state{auth_user = User, ssh_params = Ssh})};
+	{not_authorized, {User, Reason}, {Reply, Ssh}} ->
+	    retry_fun(User, Address, Reason, Opts),
+	    send_msg(Reply, State),
+	    {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} 
+    end;
 			
 userauth(#ssh_msg_userauth_success{}, #state{ssh_params = #ssh{role = client} = Ssh,
 					     starter = Pid} = State) ->
@@ -1763,3 +1777,12 @@ start_timeout(_,_, infinity) ->
     ok;
 start_timeout(Channel, From, Time) ->
     erlang:send_after(Time, self(), {timeout, {Channel, From}}).
+
+getopt(Opt, Socket) ->
+    case inet:getopts(Socket, [Opt]) of
+	{ok, [{Opt, Value}]} ->
+	    {ok, Value};
+	Other ->
+	    {error, {unexpected_getopts_return, Other}}
+    end.
+		
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 7162d18b19..ea9bca2390 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -585,10 +585,15 @@ alg_final(SSH0) ->
     {ok,SSH6} = decompress_final(SSH5),
     SSH6.
 
-select_all(CL, SL) ->
+select_all(CL, SL) when length(CL) + length(SL) < 50 ->
     A = CL -- SL,  %% algortihms only used by client
     %% algorithms used by client and server (client pref)
-    lists:map(fun(ALG) -> list_to_atom(ALG) end, (CL -- A)).
+    lists:map(fun(ALG) -> list_to_atom(ALG) end, (CL -- A));
+select_all(_CL, _SL) ->
+    throw(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_PROTOCOL_ERROR,
+			      description = "Too many algorithms", 
+			      language = "en"}).
+
 
 select([], []) ->
     none;