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Diffstat (limited to 'lib/ssh/src/ssh_connection_manager.erl')
| -rw-r--r-- | lib/ssh/src/ssh_connection_manager.erl | 914 |
1 files changed, 0 insertions, 914 deletions
diff --git a/lib/ssh/src/ssh_connection_manager.erl b/lib/ssh/src/ssh_connection_manager.erl deleted file mode 100644 index fb57a790fe..0000000000 --- a/lib/ssh/src/ssh_connection_manager.erl +++ /dev/null @@ -1,914 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% 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 -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% -%% -%%---------------------------------------------------------------------- -%% Purpose: Handles multiplexing to ssh channels and global connection -%% requests e.i. the SSH Connection Protocol (RFC 4254), that provides -%% interactive login sessions, remote execution of commands, forwarded -%% TCP/IP connections, and forwarded X11 connections. Details of the -%% protocol is implemented in ssh_connection.erl -%% ---------------------------------------------------------------------- --module(ssh_connection_manager). - --behaviour(gen_server). - --include("ssh.hrl"). --include("ssh_connect.hrl"). --include("ssh_transport.hrl"). - --export([start_link/1]). - --export([info/1, info/2, - renegotiate/1, connection_info/2, channel_info/3, - peer_addr/1, send_window/3, recv_window/3, adjust_window/3, - close/2, stop/1, send/5, - send_eof/2]). - --export([open_channel/6, reply_request/3, request/6, request/7, global_request/4, event/2, event/3, cast/2]). - -%% Internal application API and spawn --export([send_msg/1, ssh_channel_info_handler/3]). - -%% gen_server callbacks --export([init/1, handle_call/3, handle_cast/2, handle_info/2, - terminate/2, code_change/3]). - --define(DBG_MESSAGE, true). - --record(state, - { - role, - client, - starter, - connection, % pid() - connection_state, % #connection{} - latest_channel_id = 0, - opts, - channel_args, - idle_timer_ref, % timerref - connected - }). - -%%==================================================================== -%% Internal application API -%%==================================================================== - -start_link(Opts) -> - gen_server:start_link(?MODULE, Opts, []). - -open_channel(ConnectionManager, ChannelType, ChannelSpecificData, - InitialWindowSize, MaxPacketSize, Timeout) -> - case (catch call(ConnectionManager, {open, self(), ChannelType, - InitialWindowSize, - MaxPacketSize, ChannelSpecificData}, - Timeout)) of - {open, Channel} -> - {ok, Channel}; - Error -> - %% TODO: Best way? - Error - end. - -request(ConnectionManager, ChannelPid, ChannelId, Type, true, Data, Timeout) -> - call(ConnectionManager, {request, ChannelPid, ChannelId, Type, Data}, Timeout); -request(ConnectionManager, ChannelPid, ChannelId, Type, false, Data, _) -> - cast(ConnectionManager, {request, ChannelPid, ChannelId, Type, Data}). - -request(ConnectionManager, ChannelId, Type, true, Data, Timeout) -> - call(ConnectionManager, {request, ChannelId, Type, Data}, Timeout); -request(ConnectionManager, ChannelId, Type, false, Data, _) -> - cast(ConnectionManager, {request, ChannelId, Type, Data}). - -reply_request(ConnectionManager, Status, ChannelId) -> - cast(ConnectionManager, {reply_request, Status, ChannelId}). - -global_request(ConnectionManager, Type, true = Reply, Data) -> - case call(ConnectionManager, - {global_request, self(), Type, Reply, Data}) of - {ssh_cm, ConnectionManager, {success, _}} -> - ok; - {ssh_cm, ConnectionManager, {failure, _}} -> - error - end; - -global_request(ConnectionManager, Type, false = Reply, Data) -> - cast(ConnectionManager, {global_request, self(), Type, Reply, Data}). - -event(ConnectionManager, BinMsg, ErrorMsg) -> - call(ConnectionManager, {ssh_msg, self(), BinMsg, ErrorMsg}). -event(ConnectionManager, BinMsg) -> - call(ConnectionManager, {ssh_msg, self(), BinMsg}). -info(ConnectionManager) -> - info(ConnectionManager, {info, all}). - -info(ConnectionManager, ChannelProcess) -> - call(ConnectionManager, {info, ChannelProcess}). - -%% TODO: Do we really want this function? Should not -%% renegotiation be triggered by configurable timer -%% or amount of data sent counter! -renegotiate(ConnectionManager) -> - cast(ConnectionManager, renegotiate). -renegotiate_data(ConnectionManager) -> - cast(ConnectionManager, renegotiate_data). -connection_info(ConnectionManager, Options) -> - call(ConnectionManager, {connection_info, Options}). - -channel_info(ConnectionManager, ChannelId, Options) -> - call(ConnectionManager, {channel_info, ChannelId, Options}). - -%% Replaced by option peer to connection_info/2 keep for now -%% for Backwards compatibility! -peer_addr(ConnectionManager) -> - call(ConnectionManager, {peer_addr, self()}). - -%% Backwards compatibility! -send_window(ConnectionManager, Channel, TimeOut) -> - call(ConnectionManager, {send_window, Channel}, TimeOut). -%% Backwards compatibility! -recv_window(ConnectionManager, Channel, TimeOut) -> - call(ConnectionManager, {recv_window, Channel}, TimeOut). - -adjust_window(ConnectionManager, Channel, Bytes) -> - cast(ConnectionManager, {adjust_window, Channel, Bytes}). - -close(ConnectionManager, ChannelId) -> - case call(ConnectionManager, {close, ChannelId}) of - ok -> - ok; - {error, channel_closed} -> - ok - end. - -stop(ConnectionManager) -> - case call(ConnectionManager, stop) of - ok -> - ok; - {error, channel_closed} -> - ok - end. - -send(ConnectionManager, ChannelId, Type, Data, Timeout) -> - call(ConnectionManager, {data, ChannelId, Type, Data}, Timeout). - -send_eof(ConnectionManager, ChannelId) -> - call(ConnectionManager, {eof, ChannelId}). - -%%==================================================================== -%% gen_server callbacks -%%==================================================================== - -%%-------------------------------------------------------------------- -%% Function: init(Args) -> {ok, State} | -%% {ok, State, Timeout} | -%% ignore | -%% {stop, Reason} -%% Description: Initiates the server -%%-------------------------------------------------------------------- -init([server, _Socket, Opts]) -> - process_flag(trap_exit, true), - Cache = ssh_channel:cache_create(), - {ok, #state{role = server, - connection_state = #connection{channel_cache = Cache, - channel_id_seed = 0, - port_bindings = [], - requests = []}, - opts = Opts, - connected = false}}; - -init([client, Opts]) -> - process_flag(trap_exit, true), - {links, [Parent]} = process_info(self(), links), - Cache = ssh_channel:cache_create(), - Address = proplists:get_value(address, Opts), - Port = proplists:get_value(port, Opts), - SocketOpts = proplists:get_value(socket_opts, Opts), - Options = proplists:get_value(ssh_opts, Opts), - ChannelPid = proplists:get_value(channel_pid, Opts), - self() ! - {start_connection, client, [Parent, Address, Port, SocketOpts, Options]}, - TimerRef = get_idle_time(Options), - - {ok, #state{role = client, - client = ChannelPid, - connection_state = #connection{channel_cache = Cache, - channel_id_seed = 0, - port_bindings = [], - connection_supervisor = Parent, - requests = []}, - opts = Opts, - idle_timer_ref = TimerRef, - connected = false}}. - -%%-------------------------------------------------------------------- -%% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | -%% {reply, Reply, State, Timeout} | -%% {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, Reply, State} | -%% {stop, Reason, State} -%% Description: Handling call messages -%%-------------------------------------------------------------------- -handle_call({request, ChannelPid, ChannelId, Type, Data}, From, State0) -> - {{replies, Replies}, State} = handle_request(ChannelPid, - ChannelId, Type, Data, - true, From, State0), - %% Sends message to the connection handler process, reply to - %% channel is sent later when reply arrives from the connection - %% handler. - lists:foreach(fun send_msg/1, Replies), - SshOpts = proplists:get_value(ssh_opts, State0#state.opts), - case proplists:get_value(idle_time, SshOpts) of - infinity -> - ok; - _IdleTime -> - erlang:send_after(5000, self(), {check_cache, [], []}) - end, - {noreply, State}; - -handle_call({request, ChannelId, Type, Data}, From, State0) -> - {{replies, Replies}, State} = handle_request(ChannelId, Type, Data, - true, From, State0), - %% Sends message to the connection handler process, reply to - %% channel is sent later when reply arrives from the connection - %% handler. - lists:foreach(fun send_msg/1, Replies), - {noreply, State}; - -%% Message from ssh_connection_handler -handle_call({ssh_msg, Pid, Msg}, From, - #state{connection_state = Connection0, - role = Role, opts = Opts, connected = IsConnected, - client = ClientPid} - = State) -> - - %% To avoid that not all data sent by the other side is processes before - %% possible crash in ssh_connection_handler takes down the connection. - gen_server:reply(From, ok), - ConnectionMsg = decode_ssh_msg(Msg), - try ssh_connection:handle_msg(ConnectionMsg, Connection0, Pid, Role) of - {{replies, Replies}, Connection} -> - lists:foreach(fun send_msg/1, Replies), - {noreply, State#state{connection_state = Connection}}; - {noreply, Connection} -> - {noreply, State#state{connection_state = Connection}}; - {disconnect, {_, Reason}, {{replies, Replies}, Connection}} - when Role == client andalso (not IsConnected) -> - lists:foreach(fun send_msg/1, Replies), - ClientPid ! {self(), not_connected, Reason}, - {stop, {shutdown, normal}, State#state{connection = Connection}}; - {disconnect, Reason, {{replies, Replies}, Connection}} -> - lists:foreach(fun send_msg/1, Replies), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, normal}, State#state{connection_state = Connection}} - catch - _:Error -> - {disconnect, Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Internal error", - language = "en"}, Connection0, undefined, - Role), - lists:foreach(fun send_msg/1, Replies), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, Error}, State#state{connection_state = Connection}} - end; -handle_call({ssh_msg, Pid, Msg, ErrorMsg}, From, - #state{connection_state = Connection0, - role = Role, opts = Opts, connected = IsConnected, - client = ClientPid} - = State) -> - - %% To avoid that not all data sent by the other side is processes before - %% possible crash in ssh_connection_handler takes down the connection. - gen_server:reply(From, ok), - ConnectionMsg = decode_ssh_msg(Msg), - try ssh_connection:handle_msg(ConnectionMsg, Connection0, Pid, Role) of - {{replies, Replies}, Connection} -> - lists:foreach(fun send_msg/1, Replies), - {noreply, State#state{connection_state = Connection}}; - {noreply, Connection} -> - {noreply, State#state{connection_state = Connection}}; - {disconnect, {_, Reason}, {{replies, Replies}, Connection}} - when Role == client andalso (not IsConnected) -> - lists:foreach(fun send_msg/1, Replies), - ClientPid ! {self(), not_connected, {Reason, ErrorMsg}}, - {stop, {shutdown, normal}, State#state{connection = Connection}}; - {disconnect, Reason, {{replies, Replies}, Connection}} -> - lists:foreach(fun send_msg/1, Replies), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, normal}, State#state{connection_state = Connection}} - catch - _:Error -> - {disconnect, Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg( - #ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "Internal error", - language = "en"}, Connection0, undefined, - Role), - lists:foreach(fun send_msg/1, Replies), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, {shutdown, Error}, State#state{connection_state = Connection}} - end; -handle_call({global_request, Pid, _, _, _} = Request, From, - #state{connection_state = - #connection{channel_cache = Cache}} = State0) -> - State1 = handle_global_request(Request, State0), - Channel = ssh_channel:cache_find(Pid, Cache), - State = add_request(true, Channel#channel.local_id, From, State1), - {noreply, State}; - -handle_call({data, ChannelId, Type, Data}, From, - #state{connection_state = #connection{channel_cache = _Cache} - = Connection0, - connection = ConnectionPid} = State) -> - channel_data(ChannelId, Type, Data, Connection0, ConnectionPid, From, - State); - -handle_call({eof, ChannelId}, _From, - #state{connection = Pid, connection_state = - #connection{channel_cache = Cache}} = State) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id, sent_close = false} -> - send_msg({connection_reply, Pid, - ssh_connection:channel_eof_msg(Id)}), - {reply, ok, State}; - _ -> - {reply, {error,closed}, State} - end; - -handle_call({connection_info, Options}, From, - #state{connection = Connection} = State) -> - ssh_connection_handler:connection_info(Connection, From, Options), - %% Reply will be sent by the connection handler by calling - %% ssh_connection_handler:send_msg/1. - {noreply, State}; - -handle_call({channel_info, ChannelId, Options}, From, - #state{connection_state = #connection{channel_cache = Cache}} = State) -> - - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{} = Channel -> - spawn(?MODULE, ssh_channel_info_handler, [Options, Channel, From]), - {noreply, State}; - undefined -> - {reply, []} - end; - -handle_call({info, ChannelPid}, _From, - #state{connection_state = - #connection{channel_cache = Cache}} = State) -> - Result = ssh_channel:cache_foldl( - fun(Channel, Acc) when ChannelPid == all; - Channel#channel.user == ChannelPid -> - [Channel | Acc]; - (_, Acc) -> - Acc - end, [], Cache), - {reply, {ok, Result}, State}; - -handle_call({open, ChannelPid, Type, InitialWindowSize, MaxPacketSize, Data}, - From, #state{connection = Pid, - connection_state = - #connection{channel_cache = Cache}} = State0) -> - erlang:monitor(process, ChannelPid), - {ChannelId, State1} = new_channel_id(State0), - Msg = ssh_connection:channel_open_msg(Type, ChannelId, - InitialWindowSize, - MaxPacketSize, Data), - send_msg({connection_reply, Pid, Msg}), - Channel = #channel{type = Type, - sys = "none", - user = ChannelPid, - local_id = ChannelId, - recv_window_size = InitialWindowSize, - recv_packet_size = MaxPacketSize}, - ssh_channel:cache_update(Cache, Channel), - State = add_request(true, ChannelId, From, State1), - {noreply, remove_timer_ref(State)}; - -handle_call({send_window, ChannelId}, _From, - #state{connection_state = - #connection{channel_cache = Cache}} = State) -> - Reply = case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{send_window_size = WinSize, - send_packet_size = Packsize} -> - {ok, {WinSize, Packsize}}; - undefined -> - {error, einval} - end, - {reply, Reply, State}; - -handle_call({recv_window, ChannelId}, _From, - #state{connection_state = #connection{channel_cache = Cache}} - = State) -> - - Reply = case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{recv_window_size = WinSize, - recv_packet_size = Packsize} -> - {ok, {WinSize, Packsize}}; - undefined -> - {error, einval} - end, - {reply, Reply, State}; - -%% Replaced by option peer to connection_info/2 keep for now -%% for Backwards compatibility! -handle_call({peer_addr, _ChannelId}, _From, - #state{connection = Pid} = State) -> - Reply = ssh_connection_handler:peer_address(Pid), - {reply, Reply, State}; - -handle_call(opts, _, #state{opts = Opts} = State) -> - {reply, Opts, State}; - -handle_call({close, ChannelId}, _, - #state{connection = Pid, connection_state = - #connection{channel_cache = Cache}} = State) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id} = Channel -> - send_msg({connection_reply, Pid, - ssh_connection:channel_close_msg(Id)}), - ssh_channel:cache_update(Cache, Channel#channel{sent_close = true}), - SshOpts = proplists:get_value(ssh_opts, State#state.opts), - case proplists:get_value(idle_time, SshOpts) of - infinity -> - ok; - _IdleTime -> - erlang:send_after(5000, self(), {check_cache, [], []}) - end, - {reply, ok, State}; - undefined -> - {reply, ok, State} - end; - -handle_call(stop, _, #state{connection_state = Connection0, - role = Role, - opts = Opts} = State) -> - {disconnect, Reason, {{replies, Replies}, Connection}} = - ssh_connection:handle_msg(#ssh_msg_disconnect{code = ?SSH_DISCONNECT_BY_APPLICATION, - description = "User closed down connection", - language = "en"}, Connection0, undefined, - Role), - lists:foreach(fun send_msg/1, Replies), - SSHOpts = proplists:get_value(ssh_opts, Opts), - disconnect_fun(Reason, SSHOpts), - {stop, normal, ok, State#state{connection_state = Connection}}; - -%% API violation make it the violaters problem -%% by ignoring it. The violating process will get -%% a timeout or hang. -handle_call(_, _, State) -> - {noreply, State}. - -%%-------------------------------------------------------------------- -%% Function: handle_cast(Msg, State) -> {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} -%% Description: Handling cast messages -%%-------------------------------------------------------------------- -handle_cast({request, ChannelPid, ChannelId, Type, Data}, State0) -> - {{replies, Replies}, State} = handle_request(ChannelPid, ChannelId, - Type, Data, - false, none, State0), - lists:foreach(fun send_msg/1, Replies), - {noreply, State}; - -handle_cast({request, ChannelId, Type, Data}, State0) -> - {{replies, Replies}, State} = handle_request(ChannelId, Type, Data, - false, none, State0), - lists:foreach(fun send_msg/1, Replies), - {noreply, State}; - -handle_cast({reply_request, Status, ChannelId}, #state{connection_state = - #connection{channel_cache = Cache}} = State0) -> - State = case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = RemoteId} -> - cm_message({Status, RemoteId}, State0); - undefined -> - State0 - end, - {noreply, State}; - -handle_cast({global_request, _, _, _, _} = Request, State0) -> - State = handle_global_request(Request, State0), - {noreply, State}; - -handle_cast(renegotiate, #state{connection = Pid} = State) -> - ssh_connection_handler:renegotiate(Pid), - {noreply, State}; -handle_cast(renegotiate_data, #state{connection = Pid} = State) -> - ssh_connection_handler:renegotiate_data(Pid), - {noreply, State}; -handle_cast({adjust_window, ChannelId, Bytes}, - #state{connection = Pid, connection_state = - #connection{channel_cache = Cache}} = State) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{recv_window_size = WinSize, remote_id = Id} = Channel -> - ssh_channel:cache_update(Cache, Channel#channel{recv_window_size = - WinSize + Bytes}), - Msg = ssh_connection:channel_adjust_window_msg(Id, Bytes), - send_msg({connection_reply, Pid, Msg}); - undefined -> - ignore - end, - {noreply, State}; - -handle_cast({success, ChannelId}, #state{connection = Pid} = State) -> - Msg = ssh_connection:channel_success_msg(ChannelId), - send_msg({connection_reply, Pid, Msg}), - {noreply, State}; - -handle_cast({failure, ChannelId}, #state{connection = Pid} = State) -> - Msg = ssh_connection:channel_failure_msg(ChannelId), - send_msg({connection_reply, Pid, Msg}), - {noreply, State}. - -%%-------------------------------------------------------------------- -%% Function: handle_info(Info, State) -> {noreply, State} | -%% {noreply, State, Timeout} | -%% {stop, Reason, State} -%% Description: Handling all non call/cast messages -%%-------------------------------------------------------------------- -handle_info({start_connection, server, - [Address, Port, Socket, Options, SubSysSup]}, - #state{connection_state = CState} = State) -> - {ok, Connection} = ssh_transport:accept(Address, Port, Socket, Options), - Shell = proplists:get_value(shell, Options), - Exec = proplists:get_value(exec, Options), - CliSpec = proplists:get_value(ssh_cli, Options, {ssh_cli, [Shell]}), - ssh_connection_handler:send_event(Connection, socket_control), - erlang:send_after(60000, self(), rekey_data), - {noreply, State#state{connection = Connection, - connection_state = - CState#connection{address = Address, - port = Port, - cli_spec = CliSpec, - options = Options, - exec = Exec, - sub_system_supervisor = SubSysSup - }}}; - -handle_info({start_connection, client, - [Parent, Address, Port, SocketOpts, Options]}, - #state{client = Pid} = State) -> - case (catch ssh_transport:connect(Parent, Address, - Port, SocketOpts, Options)) of - {ok, Connection} -> - erlang:send_after(60000, self(), rekey_data), - erlang:send_after(3600000, self(), rekey), - {noreply, State#state{connection = Connection}}; - Reason -> - Pid ! {self(), not_connected, Reason}, - {stop, {shutdown, normal}, State} - end; -handle_info({check_cache, _ , _}, - #state{connection_state = - #connection{channel_cache = Cache}} = State) -> - {noreply, check_cache(State, Cache)}; -handle_info({ssh_cm, _Sender, Msg}, State0) -> - %% Backwards compatibility! - State = cm_message(Msg, State0), - {noreply, State}; - -%% Nop backwards compatibility -handle_info({same_user, _}, State) -> - {noreply, State}; - -handle_info(ssh_connected, #state{role = client, client = Pid} - = State) -> - Pid ! {self(), is_connected}, - {noreply, State#state{connected = true, opts = handle_password(State#state.opts)}}; - -handle_info(ssh_connected, #state{role = server} = State) -> - {noreply, State#state{connected = true}}; - -%%% Handle that ssh channels user process goes down -handle_info({'DOWN', _Ref, process, ChannelPid, _Reason}, State) -> - handle_down(handle_channel_down(ChannelPid, State)); - -%%% So that terminate will be run when supervisor is shutdown -handle_info({'EXIT', _Sup, Reason}, State) -> - {stop, Reason, State}; -handle_info(rekey, State) -> - renegotiate(self()), - erlang:send_after(3600000, self(), rekey), - {noreply, State}; -handle_info(rekey_data, State) -> - renegotiate_data(self()), - erlang:send_after(60000, self(), rekey_data), - {noreply, State}. -handle_password(Opts) -> - handle_rsa_password(handle_dsa_password(handle_normal_password(Opts))). -handle_normal_password(Opts) -> - case proplists:get_value(ssh_opts, Opts, false) of - false -> - Opts; - SshOpts -> - case proplists:get_value(password, SshOpts, false) of - false -> - Opts; - _Password -> - NewOpts = [{password, undefined}|lists:keydelete(password, 1, SshOpts)], - [{ssh_opts, NewOpts}|lists:keydelete(ssh_opts, 1, Opts)] - end - end. -handle_dsa_password(Opts) -> - case proplists:get_value(ssh_opts, Opts, false) of - false -> - Opts; - SshOpts -> - case proplists:get_value(dsa_pass_phrase, SshOpts, false) of - false -> - Opts; - _Password -> - NewOpts = [{dsa_pass_phrase, undefined}|lists:keydelete(dsa_pass_phrase, 1, SshOpts)], - [{ssh_opts, NewOpts}|lists:keydelete(ssh_opts, 1, Opts)] - end - end. -handle_rsa_password(Opts) -> - case proplists:get_value(ssh_opts, Opts, false) of - false -> - Opts; - SshOpts -> - case proplists:get_value(rsa_pass_phrase, SshOpts, false) of - false -> - Opts; - _Password -> - NewOpts = [{rsa_pass_phrase, undefined}|lists:keydelete(rsa_pass_phrase, 1, SshOpts)], - [{ssh_opts, NewOpts}|lists:keydelete(ssh_opts, 1, Opts)] - end - end. -%%-------------------------------------------------------------------- -%% Function: terminate(Reason, State) -> void() -%% Description: This function is called by a gen_server when it is about to -%% terminate. It should be the opposite of Module:init/1 and do any necessary -%% cleaning up. When it returns, the gen_server terminates with Reason. -%% The return value is ignored. -%%-------------------------------------------------------------------- -terminate(_Reason, #state{role = client, - connection_state = - #connection{connection_supervisor = Supervisor}}) -> - sshc_sup:stop_child(Supervisor); - -terminate(_Reason, #state{role = server, - connection_state = - #connection{sub_system_supervisor = SubSysSup}, - opts = Opts}) -> - Address = proplists:get_value(address, Opts), - Port = proplists:get_value(port, Opts), - SystemSup = ssh_system_sup:system_supervisor(Address, Port), - ssh_system_sup:stop_subsystem(SystemSup, SubSysSup). - -%%-------------------------------------------------------------------- -%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} -%% Description: Convert process state when code is changed -%%-------------------------------------------------------------------- -code_change(_OldVsn, State, _Extra) -> - {ok, State}. - -%%-------------------------------------------------------------------- -%%% Internal functions -%%-------------------------------------------------------------------- -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. -check_cache(State, Cache) -> - %% Check the number of entries in Cache - case proplists:get_value(size, ets:info(Cache)) of - 0 -> - Opts = proplists:get_value(ssh_opts, State#state.opts), - case proplists:get_value(idle_time, Opts) of - infinity -> - State; - undefined -> - State; - Time -> - case State#state.idle_timer_ref of - undefined -> - TimerRef = erlang:send_after(Time, self(), {'EXIT', [], "Timeout"}), - State#state{idle_timer_ref=TimerRef}; - _ -> - State - end - end; - _ -> - State - end. -remove_timer_ref(State) -> - case State#state.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 - erlang:cancel_timer(TimerRef), - State#state{idle_timer_ref = undefined} - end. -channel_data(Id, Type, Data, Connection0, ConnectionPid, From, State) -> - case ssh_connection:channel_data(Id, Type, Data, Connection0, - ConnectionPid, From) of - {{replies, Replies}, Connection} -> - lists:foreach(fun send_msg/1, Replies), - {noreply, State#state{connection_state = Connection}}; - {noreply, Connection} -> - {noreply, State#state{connection_state = Connection}} - end. - -call(Pid, Msg) -> - call(Pid, Msg, infinity). -call(Pid, Msg, Timeout) -> - try gen_server:call(Pid, Msg, Timeout) of - Result -> - Result - catch - exit:{timeout, _} -> - {error, timeout}; - exit:{normal, _} -> - {error, channel_closed}; - exit:{{shutdown, _}, _} -> - {error, channel_closed}; - exit:{noproc,_} -> - {error, channel_closed} - end. - -cast(Pid, Msg) -> - gen_server:cast(Pid, Msg). - -decode_ssh_msg(BinMsg) when is_binary(BinMsg)-> - ssh_message:decode(BinMsg); -decode_ssh_msg(Msg) -> - Msg. - - -send_msg(Msg) -> - catch do_send_msg(Msg). -do_send_msg({channel_data, Pid, Data}) -> - Pid ! {ssh_cm, self(), Data}; -do_send_msg({channel_requst_reply, From, Data}) -> - gen_server:reply(From, Data); -do_send_msg({connection_reply, Pid, Data}) -> - Msg = ssh_message:encode(Data), - ssh_connection_handler:send(Pid, Msg); -do_send_msg({flow_control, Cache, Channel, From, Msg}) -> - ssh_channel:cache_update(Cache, Channel#channel{flow_control = undefined}), - gen_server:reply(From, Msg); -do_send_msg({flow_control, From, Msg}) -> - gen_server:reply(From, Msg). - -handle_request(ChannelPid, ChannelId, Type, Data, WantReply, From, - #state{connection = Pid, - connection_state = - #connection{channel_cache = Cache}} = State0) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id} = Channel -> - update_sys(Cache, Channel, Type, ChannelPid), - Msg = ssh_connection:channel_request_msg(Id, Type, - WantReply, Data), - Replies = [{connection_reply, Pid, Msg}], - State = add_request(WantReply, ChannelId, From, State0), - {{replies, Replies}, State}; - undefined -> - {{replies, []}, State0} - end. - -handle_request(ChannelId, Type, Data, WantReply, From, - #state{connection = Pid, - connection_state = - #connection{channel_cache = Cache}} = State0) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id} -> - Msg = ssh_connection:channel_request_msg(Id, Type, - WantReply, Data), - Replies = [{connection_reply, Pid, Msg}], - State = add_request(WantReply, ChannelId, From, State0), - {{replies, Replies}, State}; - undefined -> - {{replies, []}, State0} - end. - -handle_down({{replies, Replies}, State}) -> - lists:foreach(fun send_msg/1, Replies), - {noreply, State}. - -handle_channel_down(ChannelPid, #state{connection_state = - #connection{channel_cache = Cache}} = - State) -> - ssh_channel:cache_foldl( - fun(Channel, Acc) when Channel#channel.user == ChannelPid -> - ssh_channel:cache_delete(Cache, - Channel#channel.local_id), - Acc; - (_,Acc) -> - Acc - end, [], Cache), - {{replies, []}, check_cache(State, Cache)}. - -update_sys(Cache, Channel, Type, ChannelPid) -> - ssh_channel:cache_update(Cache, - Channel#channel{sys = Type, user = ChannelPid}). - -add_request(false, _ChannelId, _From, State) -> - State; -add_request(true, ChannelId, From, #state{connection_state = - #connection{requests = Requests0} = - Connection} = State) -> - Requests = [{ChannelId, From} | Requests0], - State#state{connection_state = Connection#connection{requests = Requests}}. - -new_channel_id(#state{connection_state = #connection{channel_id_seed = Id} = - Connection} - = State) -> - {Id, State#state{connection_state = - Connection#connection{channel_id_seed = Id + 1}}}. - -handle_global_request({global_request, ChannelPid, - "tcpip-forward" = Type, WantReply, - <<?UINT32(IPLen), - IP:IPLen/binary, ?UINT32(Port)>> = Data}, - #state{connection = ConnectionPid, - connection_state = - #connection{channel_cache = Cache} - = Connection0} = State) -> - ssh_channel:cache_update(Cache, #channel{user = ChannelPid, - type = "forwarded-tcpip", - sys = none}), - Connection = ssh_connection:bind(IP, Port, ChannelPid, Connection0), - Msg = ssh_connection:global_request_msg(Type, WantReply, Data), - send_msg({connection_reply, ConnectionPid, Msg}), - State#state{connection_state = Connection}; - -handle_global_request({global_request, _Pid, "cancel-tcpip-forward" = Type, - WantReply, <<?UINT32(IPLen), - IP:IPLen/binary, ?UINT32(Port)>> = Data}, - #state{connection = Pid, - connection_state = Connection0} = State) -> - Connection = ssh_connection:unbind(IP, Port, Connection0), - Msg = ssh_connection:global_request_msg(Type, WantReply, Data), - send_msg({connection_reply, Pid, Msg}), - State#state{connection_state = Connection}; - -handle_global_request({global_request, _Pid, "cancel-tcpip-forward" = Type, - WantReply, Data}, #state{connection = Pid} = State) -> - Msg = ssh_connection:global_request_msg(Type, WantReply, Data), - send_msg({connection_reply, Pid, Msg}), - State. - -cm_message(Msg, State) -> - {noreply, NewState} = handle_cast(Msg, State), - NewState. - -disconnect_fun(Reason, Opts) -> - case proplists:get_value(disconnectfun, Opts) of - undefined -> - ok; - Fun -> - catch Fun(Reason) - end. - -ssh_channel_info_handler(Options, Channel, From) -> - Info = ssh_channel_info(Options, Channel, []), - send_msg({channel_requst_reply, From, Info}). - -ssh_channel_info([], _, Acc) -> - Acc; - -ssh_channel_info([recv_window | Rest], #channel{recv_window_size = WinSize, - recv_packet_size = Packsize - } = Channel, Acc) -> - ssh_channel_info(Rest, Channel, [{recv_window, {{win_size, WinSize}, - {packet_size, Packsize}}} | Acc]); -ssh_channel_info([send_window | Rest], #channel{send_window_size = WinSize, - send_packet_size = Packsize - } = Channel, Acc) -> - ssh_channel_info(Rest, Channel, [{send_window, {{win_size, WinSize}, - {packet_size, Packsize}}} | Acc]); -ssh_channel_info([ _ | Rest], Channel, Acc) -> - ssh_channel_info(Rest, Channel, Acc). - - - |