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-rw-r--r--lib/ssh/src/ssh_connection_handler.erl160
1 files changed, 109 insertions, 51 deletions
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 9079089d5d..670250730d 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -41,7 +41,7 @@
-export([hello/2, kexinit/2, key_exchange/2, new_keys/2,
userauth/2, connected/2]).
--export([init/1, state_name/3, handle_event/3,
+-export([init/1, handle_event/3,
handle_sync_event/4, handle_info/3, terminate/3, code_change/4]).
%% spawn export
@@ -110,18 +110,23 @@ init([Role, Manager, Socket, SshOpts]) ->
ssh_bits:install_messages(ssh_transport:transport_messages(NumVsn)),
{Protocol, Callback, CloseTag} =
proplists:get_value(transport, SshOpts, {tcp, gen_tcp, tcp_closed}),
- Ssh = init_ssh(Role, NumVsn, StrVsn, SshOpts, Socket),
- {ok, hello, #state{ssh_params =
- Ssh#ssh{send_sequence = 0, recv_sequence = 0},
- socket = Socket,
- decoded_data_buffer = <<>>,
- encoded_data_buffer = <<>>,
- transport_protocol = Protocol,
- transport_cb = Callback,
- transport_close_tag = CloseTag,
- manager = Manager,
- opts = SshOpts
- }}.
+ try init_ssh(Role, NumVsn, StrVsn, SshOpts, Socket) of
+ Ssh ->
+ {ok, hello, #state{ssh_params =
+ Ssh#ssh{send_sequence = 0, recv_sequence = 0},
+ socket = Socket,
+ decoded_data_buffer = <<>>,
+ encoded_data_buffer = <<>>,
+ transport_protocol = Protocol,
+ transport_cb = Callback,
+ transport_close_tag = CloseTag,
+ manager = Manager,
+ opts = SshOpts
+ }}
+ catch
+ exit:Reason ->
+ {stop, {shutdown, Reason}}
+ end.
%%--------------------------------------------------------------------
%% Function:
%% state_name(Event, State) -> {next_state, NextStateName, NextState}|
@@ -179,7 +184,12 @@ kexinit({#ssh_msg_kexinit{} = Kex, Payload},
next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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_init{} = Msg,
@@ -192,7 +202,12 @@ key_exchange(#ssh_msg_kexdh_init{} = Msg,
{next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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,
@@ -203,7 +218,12 @@ key_exchange(#ssh_msg_kexdh_reply{} = Msg,
{next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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_kex_dh_gex_group{} = Msg,
@@ -216,7 +236,12 @@ key_exchange(#ssh_msg_kex_dh_gex_group{} = Msg,
{next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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_kex_dh_gex_request{} = Msg,
@@ -227,7 +252,12 @@ key_exchange(#ssh_msg_kex_dh_gex_request{} = Msg,
{next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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_kex_dh_gex_reply{} = Msg,
#state{ssh_params = #ssh{role = client} = Ssh0} = State) ->
@@ -237,7 +267,12 @@ key_exchange(#ssh_msg_kex_dh_gex_reply{} = Msg,
{next_state, new_keys, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ 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.
new_keys(#ssh_msg_newkeys{} = Msg, #state{ssh_params = Ssh0} = State0) ->
@@ -249,7 +284,12 @@ new_keys(#ssh_msg_newkeys{} = Msg, #state{ssh_params = Ssh0} = State0) ->
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
handle_disconnect(DisconnectMsg, State0),
- {stop, normal, State0}
+ {stop, normal, State0};
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_KEY_EXCHANGE_FAILED,
+ description = Desc,
+ language = "en"}, State0)
end.
userauth(#ssh_msg_service_request{name = "ssh-userauth"} = Msg,
@@ -262,7 +302,12 @@ userauth(#ssh_msg_service_request{name = "ssh-userauth"} = Msg,
{next_state, userauth, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ handle_disconnect(DisconnectMsg, State);
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
+ description = Desc,
+ language = "en"}, State)
end;
userauth(#ssh_msg_service_accept{name = "ssh-userauth"},
@@ -284,7 +329,12 @@ userauth(#ssh_msg_userauth_request{service = "ssh-connection",
{next_state, userauth, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ handle_disconnect(DisconnectMsg, State);
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
+ description = Desc,
+ language = "en"}, State)
end;
userauth(#ssh_msg_userauth_request{service = "ssh-connection",
@@ -307,7 +357,12 @@ userauth(#ssh_msg_userauth_request{service = "ssh-connection",
{next_state, userauth, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ handle_disconnect(DisconnectMsg, State);
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
+ description = Desc,
+ language = "en"}, State)
end;
userauth(#ssh_msg_userauth_info_request{} = Msg,
@@ -319,7 +374,12 @@ userauth(#ssh_msg_userauth_info_request{} = Msg,
{next_state, userauth, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ handle_disconnect(DisconnectMsg, State);
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
+ description = Desc,
+ language = "en"}, State)
end;
userauth(#ssh_msg_userauth_info_response{} = Msg,
@@ -330,7 +390,12 @@ userauth(#ssh_msg_userauth_info_response{} = Msg,
{next_state, userauth, next_packet(State#state{ssh_params = Ssh})}
catch
#ssh_msg_disconnect{} = DisconnectMsg ->
- handle_disconnect(DisconnectMsg, State)
+ handle_disconnect(DisconnectMsg, State);
+ _:Error ->
+ Desc = log_error(Error),
+ handle_disconnect(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
+ description = Desc,
+ language = "en"}, State)
end;
userauth(#ssh_msg_userauth_success{}, #state{ssh_params = #ssh{role = client},
@@ -398,25 +463,6 @@ connected({#ssh_msg_kexinit{}, _Payload} = Event, State) ->
kexinit(Event, State#state{renegotiate = true}).
%%--------------------------------------------------------------------
-%% Function:
-%% state_name(Event, From, State) -> {next_state, NextStateName, NextState} |
-%% {next_state, NextStateName,
-%% NextState, Timeout} |
-%% {reply, Reply, NextStateName, NextState}|
-%% {reply, Reply, NextStateName,
-%% NextState, Timeout} |
-%% {stop, Reason, NewState}|
-%% {stop, Reason, Reply, NewState}
-%% Description: There should be one instance of this function for each
-%% possible state name. Whenever a gen_fsm receives an event sent using
-%% gen_fsm:sync_send_event/2,3, the instance of this function with the same
-%% name as the current state name StateName is called to handle the event.
-%%--------------------------------------------------------------------
-state_name(_Event, _From, State) ->
- Reply = ok,
- {reply, Reply, state_name, State}.
-
-%%--------------------------------------------------------------------
%% Function:
%% handle_event(Event, StateName, State) -> {next_state, NextStateName,
%% NextState} |
@@ -566,10 +612,9 @@ handle_info({Protocol, Socket, Data}, Statename,
Statename, State);
handle_info({CloseTag, _Socket}, _StateName,
- #state{transport_close_tag = CloseTag, %%manager = Pid,
+ #state{transport_close_tag = CloseTag,
ssh_params = #ssh{role = _Role, opts = _Opts}} = State) ->
- %%ok = ssh_connection_manager:delivered(Pid),
- {stop, normal, State};
+ {stop, {shutdown, connection_lost}, State};
handle_info(UnexpectedMessage, StateName, #state{ssh_params = SshParams} = State) ->
Msg = lists:flatten(io_lib:format(
"Unexpected message '~p' received in state '~p'\n"
@@ -603,12 +648,18 @@ terminate(shutdown, _, State) ->
language = "en"},
handle_disconnect(DisconnectMsg, State);
-terminate(Reason, _, State) ->
- Desc = io_lib:format("Erlang ssh connection handler failed with reason: "
- "~p , please report this to [email protected] \n",
- [Reason]),
+
+terminate({shutdown, connection_lost}, _, State) ->
DisconnectMsg =
#ssh_msg_disconnect{code = ?SSH_DISCONNECT_CONNECTION_LOST,
+ description = "Connection Lost",
+ language = "en"},
+ handle_disconnect(DisconnectMsg, State);
+
+terminate(Reason, _, State) ->
+ Desc = log_error(Reason),
+ DisconnectMsg =
+ #ssh_msg_disconnect{code = ?SSH_DISCONNECT_SERVICE_NOT_AVAILABLE,
description = Desc,
language = "en"},
handle_disconnect(DisconnectMsg, State).
@@ -928,3 +979,10 @@ ssh_info([peer | Rest], #ssh{peer = Peer} = SshParams, Acc) ->
ssh_info([ _ | Rest], SshParams, Acc) ->
ssh_info(Rest, SshParams, Acc).
+
+log_error(Reason) ->
+ Report = io_lib:format("Erlang ssh connection handler failed with reason: "
+ "~p , please report this to [email protected] \n",
+ [Reason]),
+ error_logger:error_report(Report),
+ "Internal error".
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 04:02:10 +0000