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-rw-r--r--lib/ssh/src/ssh_connect.hrl3
-rw-r--r--lib/ssh/src/ssh_connection_handler.erl30
-rw-r--r--lib/ssh/src/ssh_transport.erl27
-rw-r--r--lib/ssh/test/ssh_connection_SUITE.erl109
4 files changed, 138 insertions, 31 deletions
diff --git a/lib/ssh/src/ssh_connect.hrl b/lib/ssh/src/ssh_connect.hrl
index 8421b07167..9307dbbad0 100644
--- a/lib/ssh/src/ssh_connect.hrl
+++ b/lib/ssh/src/ssh_connect.hrl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2014. 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
@@ -26,6 +26,7 @@
-define(DEFAULT_PACKET_SIZE, 32768).
-define(DEFAULT_WINDOW_SIZE, 2*?DEFAULT_PACKET_SIZE).
-define(DEFAULT_TIMEOUT, 5000).
+-define(MAX_PROTO_VERSION, 255).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 86804c4436..68736c3365 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2014. 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
@@ -71,7 +71,8 @@
connection_queue,
address,
port,
- opts
+ opts,
+ recbuf
}).
-type state_name() :: hello | kexinit | key_exchange | new_keys | userauth | connection.
@@ -293,28 +294,39 @@ info(ConnectionHandler, ChannelProcess) ->
hello(socket_control, #state{socket = Socket, ssh_params = Ssh} = State) ->
VsnMsg = ssh_transport:hello_version_msg(string_version(Ssh)),
send_msg(VsnMsg, State),
- inet:setopts(Socket, [{packet, line}, {active, once}]),
- {next_state, hello, State};
+ {ok, [{recbuf, Size}]} = inet:getopts(Socket, [recbuf]),
+ inet:setopts(Socket, [{packet, line}, {active, once}, {recbuf, ?MAX_PROTO_VERSION}]),
+ {next_state, hello, State#state{recbuf = Size}};
-hello({info_line, _Line},#state{socket = Socket} = State) ->
+hello({info_line, _Line},#state{role = client, socket = Socket} = State) ->
+ %% The server may send info lines before the version_exchange
inet:setopts(Socket, [{active, once}]),
{next_state, hello, State};
+hello({info_line, _Line},#state{role = server} = State) ->
+ DisconnectMsg =
+ #ssh_msg_disconnect{code =
+ ?SSH_DISCONNECT_PROTOCOL_ERROR,
+ description = "Did not receive expected protocol version exchange",
+ language = "en"},
+ handle_disconnect(DisconnectMsg, State);
+
hello({version_exchange, Version}, #state{ssh_params = Ssh0,
- socket = Socket} = State) ->
+ socket = Socket,
+ recbuf = Size} = State) ->
{NumVsn, StrVsn} = ssh_transport:handle_hello_version(Version),
case handle_version(NumVsn, StrVsn, Ssh0) of
{ok, Ssh1} ->
- inet:setopts(Socket, [{packet,0}, {mode,binary}, {active, once}]),
+ inet:setopts(Socket, [{packet,0}, {mode,binary}, {active, once}, {recbuf, Size}]),
{KeyInitMsg, SshPacket, Ssh} = ssh_transport:key_exchange_init_msg(Ssh1),
send_msg(SshPacket, State),
{next_state, kexinit, next_packet(State#state{ssh_params = Ssh,
key_exchange_init_msg =
KeyInitMsg})};
not_supported ->
- DisconnectMsg =
+ DisconnectMsg =
#ssh_msg_disconnect{code =
- ?SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED,
+ ?SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED,
description = "Protocol version " ++ StrVsn
++ " not supported",
language = "en"},
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index ea05c849b7..76fa776113 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -82,16 +82,21 @@ format_version({Major,Minor}) ->
integer_to_list(Minor) ++ "-Erlang".
handle_hello_version(Version) ->
- StrVersion = trim_tail(Version),
- case string:tokens(Version, "-") of
- [_, "2.0" | _] ->
- {{2,0}, StrVersion};
- [_, "1.99" | _] ->
- {{2,0}, StrVersion};
- [_, "1.3" | _] ->
- {{1,3}, StrVersion};
- [_, "1.5" | _] ->
- {{1,5}, StrVersion}
+ try
+ StrVersion = trim_tail(Version),
+ case string:tokens(Version, "-") of
+ [_, "2.0" | _] ->
+ {{2,0}, StrVersion};
+ [_, "1.99" | _] ->
+ {{2,0}, StrVersion};
+ [_, "1.3" | _] ->
+ {{1,3}, StrVersion};
+ [_, "1.5" | _] ->
+ {{1,5}, StrVersion}
+ end
+ catch
+ error:_ ->
+ {undefined, "unknown version"}
end.
key_exchange_init_msg(Ssh0) ->
diff --git a/lib/ssh/test/ssh_connection_SUITE.erl b/lib/ssh/test/ssh_connection_SUITE.erl
index c115ccee5f..d63b3f2a75 100644
--- a/lib/ssh/test/ssh_connection_SUITE.erl
+++ b/lib/ssh/test/ssh_connection_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2014. 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
@@ -31,8 +31,8 @@
%% Common Test interface functions -----------------------------------
%%--------------------------------------------------------------------
-suite() ->
- [{ct_hooks,[ts_install_cth]}].
+%% suite() ->
+%% [{ct_hooks,[ts_install_cth]}].
all() ->
[
@@ -40,7 +40,11 @@ all() ->
interrupted_send,
start_shell,
start_shell_exec,
- start_shell_exec_fun
+ start_shell_exec_fun,
+ gracefull_invalid_version,
+ gracefull_invalid_start,
+ gracefull_invalid_long_start,
+ gracefull_invalid_long_start_no_nl
].
groups() ->
[{openssh_payload, [], [simple_exec,
@@ -302,7 +306,7 @@ start_shell(Config) when is_list(Config) ->
ok = ssh_connection:shell(ConnectionRef,ChannelId0),
receive
- {ssh_cm,ConnectionRef, {data, ChannelId, 0, <<"Enter command\r\n">>}} ->
+ {ssh_cm,ConnectionRef, {data, ChannelId0, 0, <<"Enter command\r\n">>}} ->
ok
after 5000 ->
ct:fail("CLI Timeout")
@@ -333,10 +337,10 @@ start_shell_exec(Config) when is_list(Config) ->
{ok, ChannelId0} = ssh_connection:session_channel(ConnectionRef, infinity),
success = ssh_connection:exec(ConnectionRef, ChannelId0,
- "testing", infinity),
+ "testing", infinity),
receive
- {ssh_cm,ConnectionRef, {data, ChannelId, 0, <<"testing\r\n">>}} ->
- ok
+ {ssh_cm,ConnectionRef, {data, ChannelId0, 0, <<"testing\r\n">>}} ->
+ ok
after 5000 ->
ct:fail("Exec Timeout")
end,
@@ -370,14 +374,99 @@ start_shell_exec_fun(Config) when is_list(Config) ->
"testing", infinity),
receive
- {ssh_cm,ConnectionRef, {data, ChannelId, 0, <<"testing\r\n">>}} ->
- ok
+ {ssh_cm,ConnectionRef, {data, ChannelId0, 0, <<"testing\r\n">>}} ->
+ ok
after 5000 ->
ct:fail("Exec Timeout")
end,
ssh:close(ConnectionRef),
ssh:stop_daemon(Pid).
+
+%%--------------------------------------------------------------------
+
+gracefull_invalid_version(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"}]),
+
+ {ok, S} = gen_tcp:connect(Host, Port, []),
+ ok = gen_tcp:send(S, ["SSH-8.-1","\r\n"]),
+ receive
+ Verstring ->
+ ct:pal("Server version: ~p~n", [Verstring]),
+ receive
+ {tcp_closed, S} ->
+ ok
+ end
+ end.
+
+gracefull_invalid_start(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"}]),
+
+ {ok, S} = gen_tcp:connect(Host, Port, []),
+ ok = gen_tcp:send(S, ["foobar","\r\n"]),
+ receive
+ Verstring ->
+ ct:pal("Server version: ~p~n", [Verstring]),
+ receive
+ {tcp_closed, S} ->
+ ok
+ end
+ end.
+
+gracefull_invalid_long_start(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"}]),
+
+ {ok, S} = gen_tcp:connect(Host, Port, []),
+ ok = gen_tcp:send(S, [lists:duplicate(257, $a), "\r\n"]),
+ receive
+ Verstring ->
+ ct:pal("Server version: ~p~n", [Verstring]),
+ receive
+ {tcp_closed, S} ->
+ ok
+ end
+ end.
+
+
+gracefull_invalid_long_start_no_nl(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"}]),
+
+ {ok, S} = gen_tcp:connect(Host, Port, []),
+ ok = gen_tcp:send(S, [lists:duplicate(257, $a), "\r\n"]),
+ receive
+ Verstring ->
+ ct:pal("Server version: ~p~n", [Verstring]),
+ receive
+ {tcp_closed, S} ->
+ ok
+ end
+ end.
+
+
%%--------------------------------------------------------------------
%% Internal functions ------------------------------------------------
%%--------------------------------------------------------------------
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