diff options
| -rw-r--r-- | lib/ssh/doc/src/ssh_connection.xml | 4 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connection.erl | 57 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connection_manager.erl | 28 | ||||
| -rw-r--r-- | lib/ssh/test/Makefile | 4 | ||||
| -rw-r--r-- | lib/ssh/test/ssh_connection_SUITE.erl | 312 | ||||
| -rw-r--r-- | lib/ssh/test/ssh_connection_SUITE_data/ssh_host_rsa_key | 15 | ||||
| -rw-r--r-- | lib/ssh/test/ssh_echo_server.erl | 71 |
7 files changed, 452 insertions, 39 deletions
diff --git a/lib/ssh/doc/src/ssh_connection.xml b/lib/ssh/doc/src/ssh_connection.xml index 9942306b93..a9ae13d556 100644 --- a/lib/ssh/doc/src/ssh_connection.xml +++ b/lib/ssh/doc/src/ssh_connection.xml @@ -196,7 +196,7 @@ <name>send(ConnectionRef, ChannelId, Data, Timeout) -></name> <name>send(ConnectionRef, ChannelId, Type, Data) -></name> <name>send(ConnectionRef, ChannelId, Type, Data, TimeOut) -> - ok | {error, timeout}</name> + ok | {error, timeout} | {error, closed}</name> <fsummary>Sends channel data </fsummary> <type> <v> ConnectionRef = ssh_connection_ref() </v> @@ -212,7 +212,7 @@ </func> <func> - <name>send_eof(ConnectionRef, ChannelId) -> ok </name> + <name>send_eof(ConnectionRef, ChannelId) -> ok | {error, closed}</name> <fsummary>Sends eof on the channel <c>ChannelId</c>. </fsummary> <type> <v> ConnectionRef = ssh_connection_ref() </v> diff --git a/lib/ssh/src/ssh_connection.erl b/lib/ssh/src/ssh_connection.erl index e3b8ebfb79..240d7f70d1 100644 --- a/lib/ssh/src/ssh_connection.erl +++ b/lib/ssh/src/ssh_connection.erl @@ -318,21 +318,22 @@ channel_data(ChannelId, DataType, Data, From) -> case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id} = Channel0 -> - {SendList, Channel} = update_send_window(Channel0, DataType, + #channel{remote_id = Id, sent_close = false} = Channel0 -> + {SendList, Channel} = update_send_window(Channel0#channel{flow_control = From}, DataType, Data, Connection), Replies = lists:map(fun({SendDataType, SendData}) -> - {connection_reply, ConnectionPid, - channel_data_msg(Id, - SendDataType, - SendData)} + {connection_reply, ConnectionPid, + channel_data_msg(Id, + SendDataType, + SendData)} end, SendList), FlowCtrlMsgs = flow_control(Replies, - Channel#channel{flow_control = From}, + Channel, Cache), {{replies, Replies ++ FlowCtrlMsgs}, Connection}; - undefined -> + _ -> + gen_server:reply(From, {error, closed}), {noreply, Connection} end. @@ -386,20 +387,30 @@ handle_msg(#ssh_msg_channel_close{recipient_channel = ChannelId}, ConnectionPid, _) -> case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{sent_close = Closed, remote_id = RemoteId} = Channel -> + #channel{sent_close = Closed, remote_id = RemoteId, flow_control = FlowControl} = Channel -> ssh_channel:cache_delete(Cache, ChannelId), {CloseMsg, Connection} = reply_msg(Channel, Connection0, {closed, ChannelId}), + + ConnReplyMsgs = case Closed of - true -> - {{replies, [CloseMsg]}, Connection}; + true -> []; false -> RemoteCloseMsg = channel_close_msg(RemoteId), - {{replies, - [{connection_reply, - ConnectionPid, RemoteCloseMsg}, - CloseMsg]}, Connection} - end; + [{connection_reply, ConnectionPid, RemoteCloseMsg}] + end, + + %% if there was a send() in progress, make it fail + SendReplyMsgs = + case FlowControl of + undefined -> []; + From -> + [{flow_control, From, {error, closed}}] + end, + + Replies = ConnReplyMsgs ++ [CloseMsg] ++ SendReplyMsgs, + {{replies, Replies}, Connection}; + undefined -> {{replies, []}, Connection0} end; @@ -1126,13 +1137,13 @@ flow_control(Channel, Cache) -> flow_control([], Channel, Cache) -> ssh_channel:cache_update(Cache, Channel), []; -flow_control([_|_], #channel{flow_control = From} = Channel, Cache) -> - case From of - undefined -> - []; - _ -> - [{flow_control, Cache, Channel, From, ok}] - end. + +flow_control([_|_], #channel{flow_control = From, + send_buf = []} = Channel, Cache) when From =/= undefined -> + [{flow_control, Cache, Channel, From, ok}]; +flow_control(_,_,_) -> + []. + encode_pty_opts(Opts) -> Bin = list_to_binary(encode_pty_opts2(Opts)), diff --git a/lib/ssh/src/ssh_connection_manager.erl b/lib/ssh/src/ssh_connection_manager.erl index e53cd4f4f7..af521b77e4 100644 --- a/lib/ssh/src/ssh_connection_manager.erl +++ b/lib/ssh/src/ssh_connection_manager.erl @@ -163,7 +163,7 @@ send(ConnectionManager, ChannelId, Type, Data, Timeout) -> call(ConnectionManager, {data, ChannelId, Type, Data}, Timeout). send_eof(ConnectionManager, ChannelId) -> - cast(ConnectionManager, {eof, ChannelId}). + call(ConnectionManager, {eof, ChannelId}). %%==================================================================== %% gen_server callbacks @@ -295,6 +295,18 @@ handle_call({data, ChannelId, Type, Data}, From, 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), @@ -453,18 +465,6 @@ handle_cast({adjust_window, ChannelId, Bytes}, end, {noreply, State}; -handle_cast({eof, ChannelId}, - #state{connection = Pid, connection_state = - #connection{channel_cache = Cache}} = State) -> - case ssh_channel:cache_lookup(Cache, ChannelId) of - #channel{remote_id = Id} -> - send_msg({connection_reply, Pid, - ssh_connection:channel_eof_msg(Id)}), - {noreply, State}; - undefined -> - {noreply, State} - end; - handle_cast({success, ChannelId}, #state{connection = Pid} = State) -> Msg = ssh_connection:channel_success_msg(ChannelId), send_msg({connection_reply, Pid, Msg}), @@ -614,6 +614,8 @@ do_send_msg({connection_reply, Pid, 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, diff --git a/lib/ssh/test/Makefile b/lib/ssh/test/Makefile index 25072688ad..f5db31baee 100644 --- a/lib/ssh/test/Makefile +++ b/lib/ssh/test/Makefile @@ -36,7 +36,9 @@ MODULES= \ ssh_to_openssh_SUITE \ ssh_sftp_SUITE \ ssh_sftpd_SUITE \ - ssh_sftpd_erlclient_SUITE + ssh_sftpd_erlclient_SUITE \ + ssh_connection_SUITE \ + ssh_echo_server HRL_FILES_NEEDED_IN_TEST= \ $(ERL_TOP)/lib/ssh/src/ssh.hrl \ diff --git a/lib/ssh/test/ssh_connection_SUITE.erl b/lib/ssh/test/ssh_connection_SUITE.erl new file mode 100644 index 0000000000..43a899f974 --- /dev/null +++ b/lib/ssh/test/ssh_connection_SUITE.erl @@ -0,0 +1,312 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2008-2012. 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% +%% + +%% +-module(ssh_connection_SUITE). + +-include_lib("common_test/include/ct.hrl"). + +-compile(export_all). + +-define(SSH_DEFAULT_PORT, 22). +-define(EXEC_TIMEOUT, 10000). + +%%-------------------------------------------------------------------- +suite() -> + [{ct_hooks,[ts_install_cth]}]. + +all() -> + [ + {group, erlang_client}, + interrupted_send + ]. +groups() -> + [{erlang_client, [], [simple_exec, + small_cat, + big_cat, + send_after_exit + ]}]. + +%%-------------------------------------------------------------------- + +init_per_suite(Config) -> + case catch crypto:start() of + ok -> + Config; + _Else -> + {skip, "Crypto could not be started!"} + end. + +end_per_suite(_Config) -> + crypto:stop(), + ok. +%%-------------------------------------------------------------------- +init_per_group(erlang_client, Config) -> + case gen_tcp:connect("localhost", 22, []) of + {error,econnrefused} -> + {skip,"No openssh deamon"}; + _ -> + Config + end; +init_per_group(_, Config) -> + Config. + +end_per_group(_, Config) -> + Config. + +%%-------------------------------------------------------------------- +init_per_testcase(_TestCase, Config) -> + ssh:start(), + Config. + +end_per_testcase(_Config) -> + ssh:stop(), + ok. + +%%% TEST cases starts here. +%%-------------------------------------------------------------------- +simple_exec(doc) -> + ["Simple openssh connectivity test for ssh_connection:exec"]; + +simple_exec(Config) when is_list(Config) -> + ConnectionRef = ssh_test_lib:connect(?SSH_DEFAULT_PORT, [{silently_accept_hosts, true}, + {user_interaction, false}]), + {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), + success = ssh_connection:exec(ConnectionRef, ChannelId0, + "echo testing", infinity), + + %% receive response to input + receive + {ssh_cm, ConnectionRef, {data, ChannelId0, 0, <<"testing\n">>}} -> + ok + end, + + %% receive close messages + receive + {ssh_cm, ConnectionRef, {eof, ChannelId0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef, {exit_status, ChannelId0, 0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef,{closed, ChannelId0}} -> + ok + end. + +%%-------------------------------------------------------------------- +small_cat(doc) -> + ["Use 'cat' to echo small data block back to us."]; + +small_cat(Config) when is_list(Config) -> + ConnectionRef = ssh_test_lib:connect(?SSH_DEFAULT_PORT, [{silently_accept_hosts, true}, + {user_interaction, false}]), + {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), + success = ssh_connection:exec(ConnectionRef, ChannelId0, + "cat", infinity), + + Data = <<"I like spaghetti squash">>, + ok = ssh_connection:send(ConnectionRef, ChannelId0, Data), + ok = ssh_connection:send_eof(ConnectionRef, ChannelId0), + + %% receive response to input + receive + {ssh_cm, ConnectionRef, {data, ChannelId0, 0, Data}} -> + ok + end, + + %% receive close messages + receive + {ssh_cm, ConnectionRef, {eof, ChannelId0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef, {exit_status, ChannelId0, 0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef,{closed, ChannelId0}} -> + ok + end. + +%%-------------------------------------------------------------------- +big_cat(doc) -> + ["Use 'cat' to echo large data block back to us."]; + +big_cat(Config) when is_list(Config) -> + ConnectionRef = ssh_test_lib:connect(?SSH_DEFAULT_PORT, [{silently_accept_hosts, true}, + {user_interaction, false}]), + {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), + success = ssh_connection:exec(ConnectionRef, ChannelId0, + "cat", infinity), + + %% build 10MB binary + Data = << <<X:32>> || X <- lists:seq(1,2500000)>>, + + %% pre-adjust receive window so the other end doesn't block + ssh_connection:adjust_window(ConnectionRef, ChannelId0, size(Data)), + + test_server:format("sending ~p byte binary~n",[size(Data)]), + ok = ssh_connection:send(ConnectionRef, ChannelId0, Data, 10000), + ok = ssh_connection:send_eof(ConnectionRef, ChannelId0), + + %% collect echoed data until eof + case big_cat_rx(ConnectionRef, ChannelId0) of + {ok, Data} -> + ok; + {ok, Other} -> + case size(Data) =:= size(Other) of + true -> + test_server:format("received and sent data are same" + "size but do not match~n",[]); + false -> + test_server:format("sent ~p but only received ~p~n", + [size(Data), size(Other)]) + end, + ct:fail(receive_data_mismatch); + Else -> + ct:fail(Else) + end, + + %% receive close messages (eof already consumed) + receive + {ssh_cm, ConnectionRef, {exit_status, ChannelId0, 0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef,{closed, ChannelId0}} -> + ok + end. + +big_cat_rx(ConnectionRef, ChannelId) -> + big_cat_rx(ConnectionRef, ChannelId, []). + +big_cat_rx(ConnectionRef, ChannelId, Acc) -> + receive + {ssh_cm, ConnectionRef, {data, ChannelId, 0, Data}} -> + %% ssh_connection:adjust_window(ConnectionRef, ChannelId, size(Data)), + %% window was pre-adjusted, don't adjust again here + big_cat_rx(ConnectionRef, ChannelId, [Data | Acc]); + {ssh_cm, ConnectionRef, {eof, ChannelId}} -> + {ok, iolist_to_binary(lists:reverse(Acc))} + after ?EXEC_TIMEOUT -> + timeout + end. + +%%-------------------------------------------------------------------- +send_after_exit(doc) -> + ["Send channel data after the channel has been closed."]; + +send_after_exit(Config) when is_list(Config) -> + ConnectionRef = ssh_test_lib:connect(?SSH_DEFAULT_PORT, [{silently_accept_hosts, true}, + {user_interaction, false}]), + {ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity), + + %% Shell command "false" will exit immediately + success = ssh_connection:exec(ConnectionRef, ChannelId0, + "false", infinity), + + timer:sleep(2000), %% Allow incoming eof/close/exit_status ssh messages to be processed + + Data = <<"I like spaghetti squash">>, + case ssh_connection:send(ConnectionRef, ChannelId0, Data, 2000) of + {error, closed} -> ok; + ok -> + ct:fail({expected,{error,closed}}); + {error, timeout} -> + ct:fail({expected,{error,closed}}); + Else -> + ct:fail(Else) + end, + + %% receive close messages + receive + {ssh_cm, ConnectionRef, {eof, ChannelId0}} -> + ok + end, + receive + {ssh_cm, ConnectionRef, {exit_status, ChannelId0, _}} -> + ok + end, + receive + {ssh_cm, ConnectionRef,{closed, ChannelId0}} -> + ok + end. +%%-------------------------------------------------------------------- +interrupted_send(doc) -> + ["Use a subsystem that echos n char and then sends eof to cause a channel exit partway through a large send."]; + +interrupted_send(Config) when is_list(Config) -> + PrivDir = ?config(priv_dir, Config), + UserDir = filename:join(PrivDir, nopubkey), % to make sure we don't use public-key-auth + file:make_dir(UserDir), + SysDir = ?config(data_dir, Config), + {Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SysDir}, + {user_dir, UserDir}, + {password, "morot"}, + {subsystems, [{"echo_n", {ssh_echo_server, [4000000]}}]}]), + + ConnectionRef = ssh_test_lib:connect(Host, Port, [{silently_accept_hosts, true}, + {user, "foo"}, + {password, "morot"}, + {user_interaction, false}, + {user_dir, UserDir}]), + + {ok, ChannelId} = ssh_connection:session_channel(ConnectionRef, infinity), + + success = ssh_connection:subsystem(ConnectionRef, ChannelId, "echo_n", infinity), + + %% build 10MB binary + Data = << <<X:32>> || X <- lists:seq(1,2500000)>>, + + %% expect remote end to send us 4MB back + <<ExpectedData:4000000/binary, _/binary>> = Data, + + %% pre-adjust receive window so the other end doesn't block + ssh_connection:adjust_window(ConnectionRef, ChannelId, size(ExpectedData) + 1), + + case ssh_connection:send(ConnectionRef, ChannelId, Data, 10000) of + {error, closed} -> + ok; + Msg -> + ct:fail({expected,{error,closed}, got, Msg}) + end, + receive_data(ExpectedData, ConnectionRef, ChannelId), + ssh:close(ConnectionRef), + ssh:stop_daemon(Pid). + + +%% Internal funtions ------------------------------------------------------------------ + +receive_data(ExpectedData, ConnectionRef, ChannelId) -> + ExpectedData = collect_data(ConnectionRef, ChannelId). + +collect_data(ConnectionRef, ChannelId) -> + collect_data(ConnectionRef, ChannelId, []). + +collect_data(ConnectionRef, ChannelId, Acc) -> + receive + {ssh_cm, ConnectionRef, {data, ChannelId, 0, Data}} -> + collect_data(ConnectionRef, ChannelId, [Data | Acc]); + {ssh_cm, ConnectionRef, {eof, ChannelId}} -> + iolist_to_binary(lists:reverse(Acc)) + after 5000 -> + timeout + end. diff --git a/lib/ssh/test/ssh_connection_SUITE_data/ssh_host_rsa_key b/lib/ssh/test/ssh_connection_SUITE_data/ssh_host_rsa_key new file mode 100644 index 0000000000..6ae7ee023d --- /dev/null +++ b/lib/ssh/test/ssh_connection_SUITE_data/ssh_host_rsa_key @@ -0,0 +1,15 @@ +-----BEGIN RSA PRIVATE KEY----- +MIICXQIBAAKBgQDCZX+4FBDwZIh9y/Uxee1VJnEXlowpz2yDKwj8semM4q843337 +zbNfxHmladB1lpz2NqyxI175xMIJuDxogyZdsOxGnFAzAnthR4dqL/RWRWzjaxSB +6IAO9SPYVVlrpZ+1hsjLW79fwXK/yc8VdhRuWTeQiRgYY2ek8+OKbOqz4QIDAQAB +AoGANmvJzJO5hkLuvyDZHKfAnGTtpifcR1wtSa9DjdKUyn8vhKF0mIimnbnYQEmW +NUUb3gXCZLi9PvkpRSVRrASDOZwcjoU/Kvww163vBUVb2cOZfFhyn6o2Sk88Tt++ +udH3hdjpf9i7jTtUkUe+QYPsia+wgvvrmn4QrahLAH86+kECQQDx5gFeXTME3cnW +WMpFz3PPumduzjqgqMMWEccX4FtQkMX/gyGa5UC7OHFyh0N/gSWvPbRHa8A6YgIt +n8DO+fh5AkEAzbqX4DOn8NY6xJIi42q7l/2jIA0RkB6P7YugW5NblhqBZ0XDnpA5 +sMt+rz+K07u9XZtxgh1xi7mNfwY6lEAMqQJBAJBEauCKmRj35Z6OyeQku59SPsnY ++SJEREVvSNw2lH9SOKQQ4wPsYlTGbvKtNVZgAcen91L5MmYfeckYE/fdIZECQQCt +64zxsTnM1I8iFxj/gP/OYlJBikrKt8udWmjaghzvLMEw+T2DExJyb9ZNeT53+UMB +m6O+B/4xzU/djvp+0hbhAkAemIt+rA5kTmYlFndhpvzkSSM8a2EXsO4XIPgGWCTT +tQKS/tTly0ADMjN/TVy11+9d6zcqadNVuHXHGtR4W0GR +-----END RSA PRIVATE KEY----- diff --git a/lib/ssh/test/ssh_echo_server.erl b/lib/ssh/test/ssh_echo_server.erl new file mode 100644 index 0000000000..739aabe6fb --- /dev/null +++ b/lib/ssh/test/ssh_echo_server.erl @@ -0,0 +1,71 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2005-2012. 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% +%% + +%% + +%%% Description: Example ssh server +-module(ssh_echo_server). +-behaviour(ssh_channel). +-record(state, { + n, + id, + cm + }). +-export([init/1, handle_msg/2, handle_ssh_msg/2, terminate/2]). + +init([N]) -> + {ok, #state{n = N}}. + +handle_msg({ssh_channel_up, ChannelId, ConnectionManager}, State) -> + {ok, State#state{id = ChannelId, + cm = ConnectionManager}}. + +handle_ssh_msg({ssh_cm, CM, {data, ChannelId, 0, Data}}, #state{n = N} = State) -> + M = N - size(Data), + case M > 0 of + true -> + ssh_connection:send(CM, ChannelId, Data), + {ok, State#state{n = M}}; + false -> + <<SendData:N/binary, _/binary>> = Data, + ssh_connection:send(CM, ChannelId, SendData), + ssh_connection:send_eof(CM, ChannelId), + {stop, ChannelId, State} + end; +handle_ssh_msg({ssh_cm, _ConnectionManager, + {data, _ChannelId, 1, Data}}, State) -> + error_logger:format("ssh: STDERR: ~s\n", [binary_to_list(Data)]), + {ok, State}; + +handle_ssh_msg({ssh_cm, _ConnectionManager, {eof, _ChannelId}}, State) -> + {ok, State}; + +handle_ssh_msg({ssh_cm, _, {signal, _, _}}, State) -> + %% Ignore signals according to RFC 4254 section 6.9. + {ok, State}; + +handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, _, _Error, _}}, + State) -> + {stop, ChannelId, State}; + +handle_ssh_msg({ssh_cm, _, {exit_status, ChannelId, _Status}}, State) -> + {stop, ChannelId, State}. + +terminate(_Reason, _State) -> + ok. |