aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ssh/src
diff options
context:
space:
mode:
Diffstat (limited to 'lib/ssh/src')
-rw-r--r--lib/ssh/src/ssh.appup.src16
-rw-r--r--lib/ssh/src/ssh.erl39
-rw-r--r--lib/ssh/src/ssh_acceptor.erl47
-rw-r--r--lib/ssh/src/ssh_connection_handler.erl3
-rw-r--r--lib/ssh/src/ssh_io.erl2
-rw-r--r--lib/ssh/src/ssh_message.erl27
6 files changed, 102 insertions, 32 deletions
diff --git a/lib/ssh/src/ssh.appup.src b/lib/ssh/src/ssh.appup.src
index 1917c95f5a..8269f89e40 100644
--- a/lib/ssh/src/ssh.appup.src
+++ b/lib/ssh/src/ssh.appup.src
@@ -19,9 +19,25 @@
{"%VSN%",
[
+ {"3.0.2", [{load_module, ssh_message, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_io, soft_purge, soft_purge, []}]},
+ {"3.0.1", [{load_module, ssh, soft_purge, soft_purge, []},
+ {load_module, ssh_acceptor, soft_purge, soft_purge, []},
+ {load_module, ssh_message, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_io, soft_purge, soft_purge, []}]},
{<<".*">>, [{restart_application, ssh}]}
],
[
+ {"3.0.2", [{load_module, ssh_message, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_io, soft_purge, soft_purge, []}]},
+ {"3.0.1", [{load_module, ssh, soft_purge, soft_purge, []},
+ {load_module, ssh_acceptor, soft_purge, soft_purge, []},
+ {load_module, ssh_message, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_io, soft_purge, soft_purge, []}]},
{<<".*">>, [{restart_application, ssh}]}
]
}.
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index de6e8cc421..743c01a42c 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.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
@@ -73,8 +73,8 @@ connect(Host, Port, Options, Timeout) ->
{SocketOptions, SshOptions} ->
{_, Transport, _} = TransportOpts =
proplists:get_value(transport, Options, {tcp, gen_tcp, tcp_closed}),
- Inet = proplists:get_value(inet, SshOptions, inet),
- try Transport:connect(Host, Port, [ {active, false}, Inet | SocketOptions], Timeout) of
+ 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)],
ssh_connection_handler:start_connection(client, Socket, Opts, Timeout);
@@ -255,8 +255,8 @@ do_start_daemon(Host, Port, Options, SocketOptions) ->
handle_options(Opts) ->
try handle_option(proplists:unfold(Opts), [], []) of
- {_,_} = Options ->
- Options
+ {Inet, Ssh} ->
+ {handle_ip(Inet), Ssh}
catch
throw:Error ->
Error
@@ -332,6 +332,8 @@ handle_option([{idle_time, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{rekey_limit, _} = Opt|Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+handle_option([{max_sessions, _} = Opt|Rest], SocketOptions, SshOptions) ->
+ handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{negotiation_timeout, _} = Opt|Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{parallel_login, _} = Opt|Rest], SocketOptions, SshOptions) ->
@@ -366,6 +368,8 @@ handle_ssh_option({pref_public_key_algs, Value} = Opt) when is_list(Value), leng
end;
handle_ssh_option({connect_timeout, Value} = Opt) when is_integer(Value); Value == infinity ->
Opt;
+handle_ssh_option({max_sessions, Value} = Opt) when is_integer(Value), Value>0 ->
+ Opt;
handle_ssh_option({negotiation_timeout, Value} = Opt) when is_integer(Value); Value == infinity ->
Opt;
handle_ssh_option({parallel_login, Value} = Opt) when Value==true ; Value==false ->
@@ -428,13 +432,14 @@ handle_ssh_option(Opt) ->
throw({error, {eoptions, Opt}}).
handle_inet_option({active, _} = Opt) ->
- throw({error, {{eoptions, Opt}, "Ssh has built in flow control, "
- "and activ is handled internaly user is not allowd"
+ throw({error, {{eoptions, Opt}, "SSH has built in flow control, "
+ "and active is handled internally, user is not allowed"
"to specify this option"}});
-handle_inet_option({inet, Value} = Opt) when (Value == inet) or (Value == inet6) ->
- Opt;
+
+handle_inet_option({inet, Value}) when (Value == inet) or (Value == inet6) ->
+ Value;
handle_inet_option({reuseaddr, _} = Opt) ->
- throw({error, {{eoptions, Opt},"Is set internaly user is not allowd"
+ throw({error, {{eoptions, Opt},"Is set internally, user is not allowed"
"to specify this option"}});
%% Option verified by inet
handle_inet_option(Opt) ->
@@ -455,3 +460,17 @@ handle_pref_algs([H|T], Acc) ->
_ ->
false
end.
+
+handle_ip(Inet) -> %% Default to ipv4
+ case lists:member(inet, Inet) of
+ true ->
+ Inet;
+ false ->
+ case lists:member(inet6, Inet) of
+ true ->
+ Inet;
+ false ->
+ [inet | Inet]
+ end
+ end.
+
diff --git a/lib/ssh/src/ssh_acceptor.erl b/lib/ssh/src/ssh_acceptor.erl
index e57b07cee8..7302196674 100644
--- a/lib/ssh/src/ssh_acceptor.erl
+++ b/lib/ssh/src/ssh_acceptor.erl
@@ -80,18 +80,36 @@ acceptor_loop(Callback, Port, Address, Opts, ListenSocket, AcceptTimeout) ->
ListenSocket, AcceptTimeout)
end.
-handle_connection(_Callback, Address, Port, Options, Socket) ->
+handle_connection(Callback, Address, Port, Options, Socket) ->
SystemSup = ssh_system_sup:system_supervisor(Address, Port),
- {ok, SubSysSup} = ssh_system_sup:start_subsystem(SystemSup, Options),
- ConnectionSup = ssh_subsystem_sup:connection_supervisor(SubSysSup),
- Timeout = proplists:get_value(negotiation_timeout,
- proplists:get_value(ssh_opts, Options, []),
- 2*60*1000),
- ssh_connection_handler:start_connection(server, Socket,
- [{supervisors, [{system_sup, SystemSup},
- {subsystem_sup, SubSysSup},
- {connection_sup, ConnectionSup}]}
- | Options], Timeout).
+ SSHopts = proplists:get_value(ssh_opts, Options, []),
+ MaxSessions = proplists:get_value(max_sessions,SSHopts,infinity),
+ case number_of_connections(SystemSup) < MaxSessions of
+ true ->
+ {ok, SubSysSup} = ssh_system_sup:start_subsystem(SystemSup, Options),
+ ConnectionSup = ssh_subsystem_sup:connection_supervisor(SubSysSup),
+ Timeout = proplists:get_value(negotiation_timeout, SSHopts, 2*60*1000),
+ ssh_connection_handler:start_connection(server, Socket,
+ [{supervisors, [{system_sup, SystemSup},
+ {subsystem_sup, SubSysSup},
+ {connection_sup, ConnectionSup}]}
+ | Options], Timeout);
+ false ->
+ Callback:close(Socket),
+ IPstr = if is_tuple(Address) -> inet:ntoa(Address);
+ true -> Address
+ end,
+ Str = try io_lib:format('~s:~p',[IPstr,Port])
+ catch _:_ -> "port "++integer_to_list(Port)
+ end,
+ error_logger:info_report("Ssh login attempt to "++Str++" denied due to option "
+ "max_sessions limits to "++ io_lib:write(MaxSessions) ++
+ " sessions."
+ ),
+ {error,max_sessions}
+ end.
+
+
handle_error(timeout) ->
ok;
@@ -117,3 +135,10 @@ handle_error(Reason) ->
String = lists:flatten(io_lib:format("Accept error: ~p", [Reason])),
error_logger:error_report(String),
exit({accept_failed, String}).
+
+
+number_of_connections(SystemSup) ->
+ length([X ||
+ {R,X,supervisor,[ssh_subsystem_sup]} <- supervisor:which_children(SystemSup),
+ is_reference(R)
+ ]).
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 322da50f21..06866392da 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -1482,8 +1482,7 @@ ssh_channel_info([ _ | Rest], Channel, Acc) ->
log_error(Reason) ->
Report = io_lib:format("Erlang ssh connection handler failed with reason: "
- "~p ~n, Stacktace: ~p ~n"
- "please report this to [email protected] \n",
+ "~p ~n, Stacktrace: ~p ~n",
[Reason, erlang:get_stacktrace()]),
error_logger:error_report(Report),
"Internal error".
diff --git a/lib/ssh/src/ssh_io.erl b/lib/ssh/src/ssh_io.erl
index 832b144db9..35336bce8b 100644
--- a/lib/ssh/src/ssh_io.erl
+++ b/lib/ssh/src/ssh_io.erl
@@ -81,6 +81,8 @@ format(Fmt, Args) ->
trim(Line) when is_list(Line) ->
lists:reverse(trim1(lists:reverse(trim1(Line))));
+trim(Line) when is_binary(Line) ->
+ trim(unicode:characters_to_list(Line));
trim(Other) -> Other.
trim1([$\s|Cs]) -> trim(Cs);
diff --git a/lib/ssh/src/ssh_message.erl b/lib/ssh/src/ssh_message.erl
index 8d6c77c0ed..76b57cb995 100644
--- a/lib/ssh/src/ssh_message.erl
+++ b/lib/ssh/src/ssh_message.erl
@@ -255,7 +255,7 @@ encode(#ssh_msg_ignore{data = Data}) ->
ssh_bits:encode([?SSH_MSG_IGNORE, Data], [byte, string]);
encode(#ssh_msg_unimplemented{sequence = Seq}) ->
- ssh_bits:encode([?SSH_MSG_IGNORE, Seq], [byte, uint32]);
+ ssh_bits:encode([?SSH_MSG_UNIMPLEMENTED, Seq], [byte, uint32]);
encode(#ssh_msg_debug{always_display = Bool,
message = Msg,
@@ -391,13 +391,6 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_REQUEST), ?UINT32(Len0), Name:Len0/binary,
data = Data};
%%% Unhandled message, also masked by same 1:st byte value as ?SSH_MSG_USERAUTH_INFO_REQUEST:
-decode(<<?BYTE(?SSH_MSG_USERAUTH_PK_OK), ?UINT32(Len), Alg:Len/binary, KeyBlob/binary>>) ->
- #ssh_msg_userauth_pk_ok{
- algorithm_name = Alg,
- key_blob = KeyBlob
- };
-
-%%% Unhandled message, also masked by same 1:st byte value as ?SSH_MSG_USERAUTH_INFO_REQUEST:
decode(<<?BYTE(?SSH_MSG_USERAUTH_PASSWD_CHANGEREQ), ?UINT32(Len0), Prompt:Len0/binary,
?UINT32(Len1), Lang:Len1/binary>>) ->
#ssh_msg_userauth_passwd_changereq{
@@ -405,6 +398,13 @@ decode(<<?BYTE(?SSH_MSG_USERAUTH_PASSWD_CHANGEREQ), ?UINT32(Len0), Prompt:Len0/b
languge = Lang
};
+%%% Unhandled message, also masked by same 1:st byte value as ?SSH_MSG_USERAUTH_INFO_REQUEST:
+decode(<<?BYTE(?SSH_MSG_USERAUTH_PK_OK), ?UINT32(Len), Alg:Len/binary, KeyBlob/binary>>) ->
+ #ssh_msg_userauth_pk_ok{
+ algorithm_name = Alg,
+ key_blob = KeyBlob
+ };
+
decode(<<?BYTE(?SSH_MSG_USERAUTH_INFO_RESPONSE), ?UINT32(Num), Data/binary>>) ->
#ssh_msg_userauth_info_response{
num_responses = Num,
@@ -461,10 +461,19 @@ decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code),
language = Lang
};
+%% Accept bad disconnects from ancient openssh clients that doesn't send language tag. Use english as a work-around.
+decode(<<?BYTE(?SSH_MSG_DISCONNECT), ?UINT32(Code),
+ ?UINT32(Len0), Desc:Len0/binary>>) ->
+ #ssh_msg_disconnect{
+ code = Code,
+ description = unicode:characters_to_list(Desc),
+ language = <<"en">>
+ };
+
decode(<<?SSH_MSG_NEWKEYS>>) ->
#ssh_msg_newkeys{};
-decode(<<?BYTE(?SSH_MSG_IGNORE), Data/binary>>) ->
+decode(<<?BYTE(?SSH_MSG_IGNORE), ?UINT32(Len), Data:Len/binary>>) ->
#ssh_msg_ignore{data = Data};
decode(<<?BYTE(?SSH_MSG_UNIMPLEMENTED), ?UINT32(Seq)>>) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 00:43:38 +0000