diff options
Diffstat (limited to 'lib/ssh/src/ssh_connection_handler.erl')
| -rw-r--r-- | lib/ssh/src/ssh_connection_handler.erl | 75 |
1 files changed, 63 insertions, 12 deletions
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index 0ec0424f74..df6175e27c 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2008-2012. All Rights Reserved. +%% Copyright Ericsson AB 2008-2013. 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 @@ -35,7 +35,8 @@ -export([start_link/4, send/2, renegotiate/1, send_event/2, connection_info/3, - peer_address/1]). + peer_address/1, + renegotiate_data/1]). %% gen_fsm callbacks -export([hello/2, kexinit/2, key_exchange/2, new_keys/2, @@ -85,6 +86,8 @@ send(ConnectionHandler, Data) -> renegotiate(ConnectionHandler) -> send_all_state_event(ConnectionHandler, renegotiate). +renegotiate_data(ConnectionHandler) -> + send_all_state_event(ConnectionHandler, data_size). connection_info(ConnectionHandler, From, Options) -> send_all_state_event(ConnectionHandler, {info, From, Options}). @@ -210,6 +213,29 @@ key_exchange(#ssh_msg_kexdh_init{} = Msg, description = Desc, language = "en"}, State) end; + +key_exchange({#ssh_msg_kexinit{} = Kex, Payload}, + #state{ssh_params = #ssh{role = Role} = Ssh0, + key_exchange_init_msg = OwnKex} = + State) -> + Ssh1 = ssh_transport:key_init(opposite_role(Role), Ssh0, Payload), + try ssh_transport:handle_kexinit_msg(Kex, OwnKex, Ssh1) of + {ok, NextKexMsg, Ssh} when Role == client -> + send_msg(NextKexMsg, State), + {next_state, key_exchange, + next_packet(State#state{ssh_params = Ssh})}; + {ok, Ssh} when Role == server -> + {next_state, key_exchange, + next_packet(State#state{ssh_params = Ssh})} + catch + #ssh_msg_disconnect{} = DisconnectMsg -> + handle_disconnect(DisconnectMsg, State); + _:Error -> + Desc = log_error(Error), + handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, + description = Desc, + language = "en"}, State) + end; key_exchange(#ssh_msg_kexdh_reply{} = Msg, #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> @@ -220,11 +246,13 @@ key_exchange(#ssh_msg_kexdh_reply{} = Msg, catch #ssh_msg_disconnect{} = DisconnectMsg -> handle_disconnect(DisconnectMsg, State); + {ErrorToDisplay, #ssh_msg_disconnect{} = DisconnectMsg} -> + handle_disconnect(DisconnectMsg, State, ErrorToDisplay); _:Error -> Desc = log_error(Error), handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED, - description = Desc, - language = "en"}, State) + description = Desc, + language = "en"}, State) end; key_exchange(#ssh_msg_kex_dh_gex_group{} = Msg, @@ -419,9 +447,9 @@ userauth(#ssh_msg_userauth_failure{authentications = Methodes}, #state{ssh_params = #ssh{role = client, userauth_methods = none} = Ssh0} = State) -> AuthMethods = string:tokens(Methodes, ","), - case ssh_auth:userauth_request_msg( - Ssh0#ssh{userauth_methods = AuthMethods}) of - {disconnect, DisconnectMsg,{Msg, Ssh}} -> + Ssh1 = Ssh0#ssh{userauth_methods = AuthMethods}, + case ssh_auth:userauth_request_msg(Ssh1) of + {disconnect, DisconnectMsg, {Msg, Ssh}} -> send_msg(Msg, State), handle_disconnect(DisconnectMsg, State#state{ssh_params = Ssh}); {Msg, Ssh} -> @@ -429,7 +457,6 @@ userauth(#ssh_msg_userauth_failure{authentications = Methodes}, {next_state, userauth, next_packet(State#state{ssh_params = Ssh})} end; - %% The prefered authentication method failed try next method userauth(#ssh_msg_userauth_failure{}, #state{ssh_params = #ssh{role = client} = Ssh0} = State) -> @@ -453,7 +480,9 @@ userauth(#ssh_msg_userauth_banner{message = Msg}, {next_state, userauth, next_packet(State)}. connected({#ssh_msg_kexinit{}, _Payload} = Event, State) -> - kexinit(Event, State#state{renegotiate = true}). + kexinit(Event, State#state{renegotiate = true}); +connected({#ssh_msg_kexdh_init{}, _Payload} = Event, State) -> + key_exchange(Event, State#state{renegotiate = true}). %%-------------------------------------------------------------------- %% Function: @@ -506,7 +535,22 @@ handle_event(renegotiate, StateName, State) -> handle_event({info, From, Options}, StateName, #state{ssh_params = Ssh} = State) -> spawn(?MODULE, ssh_info_handler, [Options, Ssh, From]), {next_state, StateName, State}; - +handle_event(data_size, connected, #state{ssh_params = Ssh0} = State) -> + {ok, [{send_oct,Sent}]} = inet:getstat(State#state.socket, [send_oct]), + MaxSent = proplists:get_value(rekey_limit, State#state.opts, 1024000000), + case Sent >= MaxSent of + true -> + {KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(Ssh0), + send_msg(SshPacket, State), + {next_state, connected, + next_packet(State#state{ssh_params = Ssh, + key_exchange_init_msg = KeyInitMsg, + renegotiate = true})}; + _ -> + {next_state, connected, next_packet(State)} + end; +handle_event(data_size, StateName, State) -> + {next_state, StateName, State}; handle_event({unknown, Data}, StateName, State) -> Msg = #ssh_msg_unimplemented{sequence = Data}, send_msg(Msg, State), @@ -657,6 +701,11 @@ terminate({shutdown, #ssh_msg_disconnect{} = Msg}, StateName, #state{ssh_params send_msg(SshPacket, State), ssh_connection_manager:event(Pid, Msg), terminate(normal, StateName, State#state{ssh_params = Ssh}); +terminate({shutdown, {#ssh_msg_disconnect{} = Msg, ErrorMsg}}, StateName, #state{ssh_params = Ssh0, manager = Pid} = State) -> + {SshPacket, Ssh} = ssh_transport:ssh_packet(Msg, Ssh0), + send_msg(SshPacket, State), + ssh_connection_manager:event(Pid, Msg, ErrorMsg), + terminate(normal, StateName, State#state{ssh_params = Ssh}); terminate(Reason, StateName, #state{ssh_params = Ssh0, manager = Pid} = State) -> log_error(Reason), DisconnectMsg = @@ -755,9 +804,9 @@ extract_algs([], NewList) -> lists:reverse(NewList); extract_algs([H|T], NewList) -> case H of - ssh_dsa -> + 'ssh-dss' -> extract_algs(T, ["ssh-dss"|NewList]); - ssh_rsa -> + 'ssh-rsa' -> extract_algs(T, ["ssh-rsa"|NewList]) end. available_host_key(KeyCb, "ssh-dss"= Alg, Opts) -> @@ -934,6 +983,8 @@ handle_ssh_packet(Length, StateName, #state{decoded_data_buffer = DecData0, handle_disconnect(#ssh_msg_disconnect{} = Msg, State) -> {stop, {shutdown, Msg}, State}. +handle_disconnect(#ssh_msg_disconnect{} = Msg, State, ErrorMsg) -> + {stop, {shutdown, {Msg, ErrorMsg}}, State}. counterpart_versions(NumVsn, StrVsn, #ssh{role = server} = Ssh) -> Ssh#ssh{c_vsn = NumVsn , c_version = StrVsn}; |