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-rw-r--r--lib/ssh/src/ssh_channel.erl382
1 files changed, 9 insertions, 373 deletions
diff --git a/lib/ssh/src/ssh_channel.erl b/lib/ssh/src/ssh_channel.erl
index 359e29fdbe..81c495a815 100644
--- a/lib/ssh/src/ssh_channel.erl
+++ b/lib/ssh/src/ssh_channel.erl
@@ -56,401 +56,37 @@
State::term()) -> {ok, State::term()} |
{stop, ChannelId::ssh:channel_id(),
State::term()}.
--behaviour(gen_server).
-
%%% API
-export([start/4, start/5, start_link/4, start_link/5, call/2, call/3,
cast/2, reply/2, enter_loop/1]).
-%% gen_server callbacks
--export([init/1, handle_call/3, handle_cast/2, handle_info/2,
- terminate/2, code_change/3]).
-
-%% Internal application API
--export([cache_create/0, cache_lookup/2, cache_update/2,
- cache_delete/1, cache_delete/2, cache_foldl/3,
- cache_info/2, cache_find/2,
- get_print_info/1]).
-
--export([dbg_trace/3]).
-
--record(state, {
- cm,
- channel_cb,
- channel_state,
- channel_id,
- close_sent = false
- }).
-
%%====================================================================
%% API
%%====================================================================
call(ChannelPid, Msg) ->
- call(ChannelPid, Msg, infinity).
+ ssh_client_channel:call(ChannelPid, Msg).
call(ChannelPid, Msg, TimeOute) ->
- try gen_server:call(ChannelPid, Msg, TimeOute) of
- Result ->
- Result
- catch
- exit:{noproc, _} ->
- {error, closed};
- exit:{normal, _} ->
- {error, closed};
- exit:{shutdown, _} ->
- {error, closed};
- exit:{{shutdown, _}, _} ->
- {error, closed};
- exit:{timeout, _} ->
- {error, timeout}
- end.
+ ssh_client_channel:call(ChannelPid, Msg, TimeOute).
cast(ChannelPid, Msg) ->
- gen_server:cast(ChannelPid, Msg).
-
+ ssh_client_channel:cast(ChannelPid, Msg).
reply(From, Msg) ->
- gen_server:reply(From, Msg).
+ ssh_client_channel:reply(From, Msg).
-%%====================================================================
-%% Internal application API
-%%====================================================================
-
-%%--------------------------------------------------------------------
-%% Function: start_link() -> {ok,Pid} | ignore | {error,Error}
-%% Description: Starts the server
-%%--------------------------------------------------------------------
start(ConnectionManager, ChannelId, CallBack, CbInitArgs) ->
- start(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined).
+ ssh_client_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs).
start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) ->
- Options = [{channel_cb, CallBack},
- {channel_id, ChannelId},
- {init_args, CbInitArgs},
- {cm, ConnectionManager},
- {exec, Exec}],
- gen_server:start(?MODULE, [Options], []).
+ ssh_client_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec).
start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs) ->
- start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined).
+ ssh_client_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs).
start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec) ->
- Options = [{channel_cb, CallBack},
- {channel_id, ChannelId},
- {init_args, CbInitArgs},
- {cm, ConnectionManager},
- {exec, Exec}],
- gen_server:start_link(?MODULE, [Options], []).
+ ssh_client_channel:start_link(ConnectionManager, ChannelId, CallBack, CbInitArgs, Exec).
enter_loop(State) ->
- gen_server:enter_loop(?MODULE, [], State).
-
-%%====================================================================
-%% gen_server callbacks
-%%====================================================================
-
-%%--------------------------------------------------------------------
-%% Function: init(Args) -> {ok, State} |
-%% {ok, State, Timeout} |
-%% ignore |
-%% {stop, Reason}
-%% Description: Initiates the server
-%%--------------------------------------------------------------------
-init([Options]) ->
- Cb = proplists:get_value(channel_cb, Options),
- ConnectionManager = proplists:get_value(cm, Options),
- ChannelId = proplists:get_value(channel_id, Options),
- process_flag(trap_exit, true),
- try Cb:init(channel_cb_init_args(Options)) of
- {ok, ChannelState} ->
- State = #state{cm = ConnectionManager,
- channel_cb = Cb,
- channel_id = ChannelId,
- channel_state = ChannelState},
- self() ! {ssh_channel_up, ChannelId, ConnectionManager},
- {ok, State};
- {ok, ChannelState, Timeout} ->
- State = #state{cm = ConnectionManager,
- channel_cb = Cb,
- channel_id = ChannelId,
- channel_state = ChannelState},
- self() ! {ssh_channel_up, ChannelId, ConnectionManager},
- {ok, State, Timeout};
- {stop, Why} ->
- {stop, Why}
- catch
- _:Reason ->
- {stop, Reason}
- end.
-
-channel_cb_init_args(Options) ->
- case proplists:get_value(exec, Options) of
- undefined ->
- proplists:get_value(init_args, Options);
- Exec ->
- proplists:get_value(init_args, Options) ++ [Exec]
- end.
-
-%%--------------------------------------------------------------------
-%% 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(get_print_info, _From, State) ->
- Reply =
- {{State#state.cm,
- State#state.channel_id},
- io_lib:format('CB=~p',[State#state.channel_cb])
- },
- {reply, Reply, State};
-
-handle_call(Request, From, #state{channel_cb = Module,
- channel_state = ChannelState} = State) ->
- try Module:handle_call(Request, From, ChannelState) of
- Result ->
- handle_cb_result(Result, State)
- catch
- error:{undef, _} ->
- {noreply, State}
- end.
-
-
-%%--------------------------------------------------------------------
-%% Function: handle_cast(Msg, State) -> {noreply, State} |
-%% {noreply, State, Timeout} |
-%% {stop, Reason, State}
-%% Description: Handling cast messages
-%%--------------------------------------------------------------------
-handle_cast(Msg, #state{channel_cb = Module,
- channel_state = ChannelState} = State) ->
-
- try Module:handle_cast(Msg, ChannelState) of
- Result ->
- handle_cb_result(Result, State)
- catch
- error:{undef, _} ->
- {noreply, State}
- end.
-
-%%--------------------------------------------------------------------
-%% Function: handle_info(Info, State) -> {noreply, State} |
-%% {noreply, State, Timeout} |
-%% {stop, Reason, State}
-%% Description: Handling all non call/cast messages
-%%--------------------------------------------------------------------
-handle_info({ssh_cm, ConnectionManager, {closed, _ChannelId}},
- #state{cm = ConnectionManager,
- close_sent = true} = State) ->
- {stop, normal, State};
-handle_info({ssh_cm, ConnectionManager, {closed, ChannelId}},
- #state{cm = ConnectionManager,
- close_sent = false} = State) ->
- %% To be on the safe side, i.e. the manager has already been terminated.
- (catch ssh_connection:close(ConnectionManager, ChannelId)),
- {stop, normal, State#state{close_sent = true}};
-
-handle_info({ssh_cm, _, _} = Msg, #state{cm = ConnectionManager,
- channel_cb = Module,
- channel_state = ChannelState0} = State) ->
- case Module:handle_ssh_msg(Msg, ChannelState0) of
- {ok, ChannelState} ->
- adjust_window(Msg),
- {noreply, State#state{channel_state = ChannelState}};
- {ok, ChannelState, Timeout} ->
- adjust_window(Msg),
- {noreply, State#state{channel_state = ChannelState}, Timeout};
- {stop, ChannelId, ChannelState} ->
- catch ssh_connection:close(ConnectionManager, ChannelId),
- {stop, normal, State#state{close_sent = true,
- channel_state = ChannelState}}
- end;
-
-handle_info(Msg, #state{cm = ConnectionManager, channel_cb = Module,
- channel_state = ChannelState0} = State) ->
- case Module:handle_msg(Msg, ChannelState0) of
- {ok, ChannelState} ->
- {noreply, State#state{channel_state = ChannelState}};
- {ok, ChannelState, Timeout} ->
- {noreply, State#state{channel_state = ChannelState}, Timeout};
- {stop, Reason, ChannelState} when is_atom(Reason)->
- {stop, Reason, State#state{close_sent = true,
- channel_state = ChannelState}};
- {stop, ChannelId, ChannelState} ->
- Reason =
- case Msg of
- {'EXIT', _Pid, shutdown} ->
- shutdown;
- _ ->
- normal
- end,
- (catch ssh_connection:close(ConnectionManager, ChannelId)),
- {stop, Reason, State#state{close_sent = true,
- channel_state = ChannelState}}
- 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{cm = ConnectionManager,
- channel_id = ChannelId,
- close_sent = false} = State) ->
- catch ssh_connection:close(ConnectionManager, ChannelId),
- terminate(Reason, State#state{close_sent = true});
-terminate(_, #state{channel_cb = Cb, channel_state = ChannelState}) ->
- catch Cb:terminate(Cb, ChannelState),
- ok.
-
-%%--------------------------------------------------------------------
-%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState}
-%% Description: Convert process state when code is changed
-%%--------------------------------------------------------------------
-code_change(OldVsn, #state{channel_cb = Module,
- channel_state = ChannelState0} = State, Extra) ->
- {ok, ChannelState} = Module:code_change(OldVsn, ChannelState0, Extra),
- {ok, State#state{channel_state = ChannelState}}.
-
-%%====================================================================
-%% Internal application API
-%%====================================================================
-cache_create() ->
- ets:new(cm_tab, [set,{keypos, #channel.local_id}]).
-
-cache_lookup(Cache, Key) ->
- case ets:lookup(Cache, Key) of
- [Channel] ->
- Channel;
- [] ->
- undefined
- end.
-
-cache_update(Cache, #channel{local_id = Id} = Entry) when Id =/= undefined ->
- ets:insert(Cache, Entry).
-
-cache_delete(Cache, Key) ->
- ets:delete(Cache, Key).
-
-cache_delete(Cache) ->
- ets: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
- [] ->
- undefined;
- [Channel] ->
- Channel
- end.
-
-get_print_info(Pid) ->
- call(Pid, get_print_info, 1000).
-
-%%--------------------------------------------------------------------
-%%% Internal functions
-%%--------------------------------------------------------------------
-handle_cb_result({reply, Reply, ChannelState}, State) ->
- {reply, Reply, State#state{channel_state = ChannelState}};
-handle_cb_result({reply, Reply, ChannelState, Timeout}, State) ->
- {reply, Reply,State#state{channel_state = ChannelState}, Timeout};
-handle_cb_result({noreply, ChannelState}, State) ->
- {noreply, State#state{channel_state = ChannelState}};
-handle_cb_result({noreply, ChannelState, Timeout}, State) ->
- {noreply, State#state{channel_state = ChannelState}, Timeout};
-handle_cb_result({stop, Reason, Reply, ChannelState}, State) ->
- {stop, Reason, Reply, State#state{channel_state = ChannelState}};
-handle_cb_result({stop, Reason, ChannelState}, State) ->
- {stop, Reason, State#state{channel_state = ChannelState}}.
-
-adjust_window({ssh_cm, ConnectionManager,
- {data, ChannelId, _, Data}}) ->
- ssh_connection:adjust_window(ConnectionManager, ChannelId, size(Data));
-adjust_window(_) ->
- ok.
-
-
-%%%################################################################
-%%%#
-%%%# Tracing
-%%%#
-
-dbg_trace(points, _, _) -> [terminate, channels, channel_events];
-
-
-dbg_trace(flags, channels, A) -> [c] ++ dbg_trace(flags, terminate, A);
-dbg_trace(on, channels, A) -> dbg:tp(?MODULE, init, 1, x),
- dbg_trace(on, terminate, A);
-dbg_trace(off, channels, A) -> dbg:ctpg(?MODULE, init, 1),
- dbg_trace(off, terminate, A);
-dbg_trace(format, channels, {call, {?MODULE,init, [[KVs]]}}) ->
- ["Server Channel Starting:\n",
- io_lib:format("Connection: ~p, ChannelId: ~p, CallBack: ~p\nCallBack init args = ~p",
- [proplists:get_value(K,KVs) || K <- [cm, channel_id, channel_cb]]
- ++ [channel_cb_init_args(KVs)])
- ];
-dbg_trace(format, channels, {return_from, {?MODULE,init,1}, {stop,Reason}}) ->
- ["Server Channel Start FAILED!\n",
- io_lib:format("Reason = ~p", [Reason])
- ];
-dbg_trace(format, channels, F) ->
- dbg_trace(format, terminate, F);
-
-
-dbg_trace(flags, terminate, _) -> [c];
-dbg_trace(on, terminate, _) -> dbg:tp(?MODULE, terminate, 2, x);
-dbg_trace(off, terminate, _) -> dbg:ctpg(?MODULE, terminate, 2);
-dbg_trace(format, terminate, {call, {?MODULE,terminate, [Reason, State]}}) ->
- ["Server Channel Terminating:\n",
- io_lib:format("Reason: ~p,~nState:~n~s", [Reason, wr_record(State)])
- ];
-
-dbg_trace(flags, channel_events, _) -> [c];
-dbg_trace(on, channel_events, _) -> dbg:tp(?MODULE, handle_call, 3, x),
- dbg:tp(?MODULE, handle_cast, 2, x),
- dbg:tp(?MODULE, handle_info, 2, x);
-dbg_trace(off, channel_events, _) -> dbg:ctpg(?MODULE, handle_call, 3),
- dbg:ctpg(?MODULE, handle_cast, 2),
- dbg:ctpg(?MODULE, handle_info, 2);
-dbg_trace(format, channel_events, {call, {?MODULE,handle_call, [Call,From,State]}}) ->
- [hdr("is called", State),
- io_lib:format("From: ~p~nCall: ~p~n", [From, Call])
- ];
-dbg_trace(format, channel_events, {return_from, {?MODULE,handle_call,3}, Ret}) ->
- ["Server Channel call returned:\n",
- io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)])
- ];
-dbg_trace(format, channel_events, {call, {?MODULE,handle_cast, [Cast,State]}}) ->
- [hdr("got cast", State),
- io_lib:format("Cast: ~p~n", [Cast])
- ];
-dbg_trace(format, channel_events, {return_from, {?MODULE,handle_cast,2}, Ret}) ->
- ["Server Channel cast returned:\n",
- io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)])
- ];
-dbg_trace(format, channel_events, {call, {?MODULE,handle_info, [Info,State]}}) ->
- [hdr("got info", State),
- io_lib:format("Info: ~p~n", [Info])
- ];
-dbg_trace(format, channel_events, {return_from, {?MODULE,handle_info,2}, Ret}) ->
- ["Server Channel info returned:\n",
- io_lib:format("~p~n", [ssh_dbg:reduce_state(Ret)])
- ].
-
-hdr(Title, S) ->
- io_lib:format("Server Channel (Id=~p, CB=~p) ~s:\n", [S#state.channel_id, S#state.channel_cb, Title]).
-
-?wr_record(state).
-
-
+ ssh_client_channel:enter_loop(State).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 04:09:27 +0000