diff options
Diffstat (limited to 'lib/ssh')
| -rw-r--r-- | lib/ssh/src/ssh.erl | 9 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_channel.erl | 5 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connection_handler.erl | 135 |
3 files changed, 73 insertions, 76 deletions
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl index 48ef8aad2a..2eae897ce2 100644 --- a/lib/ssh/src/ssh.erl +++ b/lib/ssh/src/ssh.erl @@ -86,7 +86,7 @@ connect(Host, Port, Options, Timeout) -> ConnectionTimeout = proplists:get_value(connect_timeout, Options, infinity), try Transport:connect(Host, Port, [ {active, false} | SocketOptions], ConnectionTimeout) of {ok, Socket} -> - Opts = [{user_pid, self()}, {host, Host} | fix_idle_time(SshOptions)], + Opts = [{user_pid,self()}, {host,Host} | SshOptions], ssh_connection_handler:start_connection(client, Socket, Opts, Timeout); {error, Reason} -> {error, Reason} @@ -228,13 +228,6 @@ default_algorithms() -> %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- -fix_idle_time(SshOptions) -> - case proplists:get_value(idle_time, SshOptions) of - undefined -> - [{idle_time, infinity}|SshOptions]; - _ -> - SshOptions - end. start_daemon(Host, Port, Options, Inet) -> case handle_options(Options) of {error, _Reason} = Error -> diff --git a/lib/ssh/src/ssh_channel.erl b/lib/ssh/src/ssh_channel.erl index de6908bb38..a8e6ebde16 100644 --- a/lib/ssh/src/ssh_channel.erl +++ b/lib/ssh/src/ssh_channel.erl @@ -68,7 +68,7 @@ %% Internal application API -export([cache_create/0, cache_lookup/2, cache_update/2, cache_delete/1, cache_delete/2, cache_foldl/3, - cache_find/2, + cache_info/2, cache_find/2, get_print_info/1]). -record(state, { @@ -335,6 +335,9 @@ cache_delete(Cache) -> cache_foldl(Fun, Acc, Cache) -> ets:foldl(Fun, Acc, Cache). +cache_info(num_entries, Cache) -> + proplists:get_value(size, ets:info(Cache)). + cache_find(ChannelPid, Cache) -> case ets:match_object(Cache, #channel{user = ChannelPid}) of [] -> diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index 46c45b6f68..6f9b2b3e22 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -349,6 +349,8 @@ renegotiate_data(ConnectionHandler) -> idle_timer_ref :: undefined | infinity | reference(), + idle_timer_value = infinity :: infinity + | pos_integer(), transport_protocol :: atom(), % ex: tcp transport_cb :: atom(), % ex: gen_tcp transport_close_tag :: atom(), % ex: tcp_closed @@ -405,7 +407,7 @@ init_connection_handler(Role, Socket, Opts) -> init_process_state(Role, Socket, Opts) -> - S = #data{connection_state = + D = #data{connection_state = C = #connection{channel_cache = ssh_channel:cache_create(), channel_id_seed = 0, port_bindings = [], @@ -420,10 +422,9 @@ init_process_state(Role, Socket, Opts) -> %% Start the renegotiation timers timer:apply_after(?REKEY_TIMOUT, gen_statem, cast, [self(), renegotiate]), timer:apply_after(?REKEY_DATA_TIMOUT, gen_statem, cast, [self(), data_size]), - S#data{idle_timer_ref = get_idle_time(Opts)}; - + cache_init_idle_timer(D); server -> - S#data{connection_state = init_connection(Role, C, Opts)} + D#data{connection_state = init_connection(Role, C, Opts)} end. @@ -537,8 +538,8 @@ handle_event(_, _Event, {init_error,Error}, _) -> handle_event(_, socket_control, {hello,_}, D) -> VsnMsg = ssh_transport:hello_version_msg(string_version(D#data.ssh_params)), ok = send_bytes(VsnMsg, D), - case getopt(recbuf, Socket=D#data.socket) of - {ok, Size} -> + case inet:getopts(Socket=D#data.socket, [recbuf]) of + {ok, [{recbuf,Size}]} -> %% Set the socket to the hello text line handling mode: inet:setopts(Socket, [{packet, line}, {active, once}, @@ -547,8 +548,9 @@ handle_event(_, socket_control, {hello,_}, D) -> {recbuf, ?MAX_PROTO_VERSION}, {nodelay,true}]), {keep_state, D#data{inet_initial_recbuf_size=Size}}; - {error, Reason} -> - {stop, {shutdown,Reason}} + + Other -> + {stop, {shutdown,{unexpected_getopts_return, Other}}} end; handle_event(_, {info_line,_Line}, {hello,Role}, D) -> @@ -1069,15 +1071,13 @@ handle_event({call,From}, {request, ChannelPid, ChannelId, Type, Data, Timeout}, D = handle_request(ChannelPid, ChannelId, Type, Data, true, From, D0), %% Note reply to channel will happen later when reply is recived from peer on the socket start_timeout(ChannelId, From, Timeout), - handle_idle_timeout(D), - {keep_state, D}; + {keep_state, cache_request_idle_timer_check(D)}; handle_event({call,From}, {request, ChannelId, Type, Data, Timeout}, {connected,_}, D0) -> D = handle_request(ChannelId, Type, Data, true, From, D0), %% Note reply to channel will happen later when reply is recived from peer on the socket start_timeout(ChannelId, From, Timeout), - handle_idle_timeout(D), - {keep_state, D}; + {keep_state, cache_request_idle_timer_check(D)}; handle_event({call,From}, {global_request, Pid, _, _, _} = Request, {connected,_}, D0) -> D1 = handle_global_request(Request, D0), @@ -1122,7 +1122,7 @@ handle_event({call,From}, }), D = add_request(true, ChannelId, From, D2), start_timeout(ChannelId, From, Timeout), - {keep_state, remove_timer_ref(D)}; + {keep_state, cache_cancel_idle_timer(D)}; handle_event({call,From}, {send_window, ChannelId}, {connected,_}, D) -> Reply = case ssh_channel:cache_lookup(cache(D), ChannelId) of @@ -1149,8 +1149,7 @@ handle_event({call,From}, {close, ChannelId}, {connected,_}, D0) -> #channel{remote_id = Id} = Channel -> D1 = send_msg(ssh_connection:channel_close_msg(Id), D0), ssh_channel:cache_update(cache(D1), Channel#channel{sent_close = true}), - handle_idle_timeout(D1), - {keep_state, D1, [{reply,From,ok}]}; + {keep_state, cache_request_idle_timer_check(D1), [{reply,From,ok}]}; undefined -> {keep_state_and_data, [{reply,From,ok}]} end; @@ -1263,8 +1262,8 @@ handle_event(info, {'DOWN', _Ref, process, ChannelPid, _Reason}, _, D0) -> handle_event(info, {'EXIT', _Sup, Reason}, _, _) -> {stop, {shutdown, Reason}}; -handle_event(info, {check_cache, _ , _}, _, D) -> - {keep_state, check_cache(D)}; +handle_event(info, check_cache, _, D) -> + {keep_state, cache_check_set_idle_timer(D)}; handle_event(info, UnexpectedMessage, StateName, D = #data{ssh_params = Ssh}) -> case unexpected_fun(UnexpectedMessage, D) of @@ -1462,14 +1461,6 @@ renegotiation({_,_,ReNeg}) -> ReNeg == renegotiation; renegotiation(_) -> false. %%-------------------------------------------------------------------- -get_idle_time(SshOptions) -> - case proplists:get_value(idle_time, SshOptions) of - infinity -> - infinity; - _IdleTime -> %% We dont want to set the timeout on first connect - undefined - end. - supported_host_keys(client, _, Options) -> try case proplists:get_value(public_key, @@ -1663,14 +1654,6 @@ handle_global_request({global_request, _, "cancel-tcpip-forward" = Type, send_msg(Msg, State). %%%---------------------------------------------------------------- -handle_idle_timeout(#data{opts = Opts}) -> - case proplists:get_value(idle_time, Opts, infinity) of - infinity -> - ok; - IdleTime -> - erlang:send_after(IdleTime, self(), {check_cache, [], []}) - end. - handle_channel_down(ChannelPid, D) -> ssh_channel:cache_foldl( fun(Channel, Acc) when Channel#channel.user == ChannelPid -> @@ -1680,7 +1663,7 @@ handle_channel_down(ChannelPid, D) -> (_,Acc) -> Acc end, [], cache(D)), - {{replies, []}, check_cache(D)}. + {{replies, []}, cache_check_set_idle_timer(D)}. update_sys(Cache, Channel, Type, ChannelPid) -> @@ -1826,8 +1809,6 @@ get_repl(noreply, Acc) -> get_repl(X, Acc) -> exit({get_repl,X,Acc}). - - %%%---------------------------------------------------------------- disconnect_fun({disconnect,Msg}, D) -> disconnect_fun(Msg, D); @@ -1864,38 +1845,65 @@ debug_fun(#ssh_msg_debug{always_display = Display, end. +%%%---------------------------------------------------------------- +%%% Cache idle timer that closes the connection if there are no +%%% channels open for a while. + +cache_init_idle_timer(D) -> + case proplists:get_value(idle_time, D#data.opts, infinity) of + infinity -> + D#data{idle_timer_value = infinity, + idle_timer_ref = infinity % A flag used later... + }; + IdleTime -> + %% We dont want to set the timeout on first connect + D#data{idle_timer_value = IdleTime} + end. + -check_cache(D) -> - %% Check the number of entries in Cache - case proplists:get_value(size, ets:info(cache(D))) of +cache_check_set_idle_timer(D = #data{idle_timer_ref = undefined, + idle_timer_value = IdleTime}) -> + %% No timer set - shall we set one? + case ssh_channel:cache_info(num_entries, cache(D)) of + 0 when IdleTime == infinity -> + %% No. Meaningless to set a timer that fires in an infinite time... + D; 0 -> - case proplists:get_value(idle_time, D#data.opts, infinity) of - infinity -> - D; - Time -> - handle_idle_timer(Time, D) - end; + %% Yes, we'll set one since the cache is empty and it should not + %% be that for a specified time + D#data{idle_timer_ref = + erlang:send_after(IdleTime, self(), {'EXIT',[],"Timeout"})}; _ -> + %% No - there are entries in the cache D - end. + end; +cache_check_set_idle_timer(D) -> + %% There is already a timer set or the timeout time is infinite + D. + -handle_idle_timer(Time, #data{idle_timer_ref = undefined} = State) -> - TimerRef = erlang:send_after(Time, self(), {'EXIT', [], "Timeout"}), - State#data{idle_timer_ref=TimerRef}; -handle_idle_timer(_, State) -> - State. - -remove_timer_ref(State) -> - case State#data.idle_timer_ref of - infinity -> %% If the timer is not activated - State; - undefined -> %% If we already has cancelled the timer - State; - TimerRef -> %% Timer is active +cache_cancel_idle_timer(D) -> + case D#data.idle_timer_ref of + infinity -> + %% The timer is not activated + D; + undefined -> + %% The timer is already cancelled + D; + TimerRef -> + %% The timer is active erlang:cancel_timer(TimerRef), - State#data{idle_timer_ref = undefined} + D#data{idle_timer_ref = undefined} end. + +cache_request_idle_timer_check(D = #data{idle_timer_value = infinity}) -> + D; +cache_request_idle_timer_check(D = #data{idle_timer_value = IdleTime}) -> + erlang:send_after(IdleTime, self(), check_cache), + D. + +%%%---------------------------------------------------------------- socket_control(Socket, Pid, Transport) -> case Transport:controlling_process(Socket, Pid) of ok -> @@ -1933,10 +1941,3 @@ start_timeout(_,_, infinity) -> 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. |