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-rw-r--r--lib/ssh/src/ssh.erl216
1 files changed, 172 insertions, 44 deletions
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 71e7d77475..86c042781c 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -24,11 +24,14 @@
-include("ssh.hrl").
-include("ssh_connect.hrl").
-include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/file.hrl").
-export([start/0, start/1, stop/0, connect/3, connect/4, close/1, connection_info/2,
channel_info/3,
daemon/1, daemon/2, daemon/3,
- stop_listener/1, stop_listener/2, stop_daemon/1, stop_daemon/2,
+ default_algorithms/0,
+ stop_listener/1, stop_listener/2, stop_listener/3,
+ stop_daemon/1, stop_daemon/2, stop_daemon/3,
shell/1, shell/2, shell/3]).
%%--------------------------------------------------------------------
@@ -157,7 +160,9 @@ daemon(HostAddr, Port, Options0) ->
stop_listener(SysSup) ->
ssh_system_sup:stop_listener(SysSup).
stop_listener(Address, Port) ->
- ssh_system_sup:stop_listener(Address, Port).
+ stop_listener(Address, Port, ?DEFAULT_PROFILE).
+stop_listener(Address, Port, Profile) ->
+ ssh_system_sup:stop_listener(Address, Port, Profile).
%%--------------------------------------------------------------------
-spec stop_daemon(pid()) -> ok.
@@ -169,8 +174,9 @@ stop_listener(Address, Port) ->
stop_daemon(SysSup) ->
ssh_system_sup:stop_system(SysSup).
stop_daemon(Address, Port) ->
- ssh_system_sup:stop_system(Address, Port).
-
+ ssh_system_sup:stop_system(Address, Port, ?DEFAULT_PROFILE).
+stop_daemon(Address, Port, Profile) ->
+ ssh_system_sup:stop_system(Address, Port, Profile).
%%--------------------------------------------------------------------
-spec shell(string()) -> _.
-spec shell(string(), proplists:proplist()) -> _.
@@ -208,6 +214,11 @@ shell(Host, Port, Options) ->
end.
%%--------------------------------------------------------------------
+%%--------------------------------------------------------------------
+default_algorithms() ->
+ ssh_transport:default_algorithms().
+
+%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
fix_idle_time(SshOptions) ->
@@ -226,7 +237,8 @@ start_daemon(Host, Port, Options, Inet) ->
end.
do_start_daemon(Host, Port, Options, SocketOptions) ->
- case ssh_system_sup:system_supervisor(Host, Port) of
+ Profile = proplists:get_value(profile, Options, ?DEFAULT_PROFILE),
+ case ssh_system_sup:system_supervisor(Host, Port, Profile) of
undefined ->
%% It would proably make more sense to call the
%% address option host but that is a too big change at the
@@ -259,7 +271,7 @@ do_start_daemon(Host, Port, Options, SocketOptions) ->
end.
handle_options(Opts) ->
- try handle_option(proplists:unfold(Opts), [], []) of
+ try handle_option(algs_compatibility(proplists:unfold(Opts)), [], []) of
{Inet, Ssh} ->
{handle_ip(Inet), Ssh}
catch
@@ -267,6 +279,35 @@ handle_options(Opts) ->
Error
end.
+
+algs_compatibility(Os) ->
+ %% Take care of old options 'public_key_alg' and 'pref_public_key_algs'
+ comp_pk(proplists:get_value(preferred_algorithms,Os),
+ proplists:get_value(pref_public_key_algs,Os),
+ proplists:get_value(public_key_alg, Os),
+ [{K,V} || {K,V} <- Os,
+ K =/= public_key_alg,
+ K =/= pref_public_key_algs]
+ ).
+
+comp_pk(undefined, undefined, undefined, Os) -> Os;
+comp_pk( PrefAlgs, _, _, Os) when PrefAlgs =/= undefined -> Os;
+
+comp_pk(undefined, undefined, ssh_dsa, Os) -> comp_pk(undefined, undefined, 'ssh-dss', Os);
+comp_pk(undefined, undefined, ssh_rsa, Os) -> comp_pk(undefined, undefined, 'ssh-rsa', Os);
+comp_pk(undefined, undefined, PK, Os) ->
+ PKs = [PK | ssh_transport:supported_algorithms(public_key)--[PK]],
+ [{preferred_algorithms, [{public_key,PKs}] } | Os];
+
+comp_pk(undefined, PrefPKs, _, Os) when PrefPKs =/= undefined ->
+ PKs = [case PK of
+ ssh_dsa -> 'ssh-dss';
+ ssh_rsa -> 'ssh-rsa';
+ _ -> PK
+ end || PK <- PrefPKs],
+ [{preferred_algorithms, [{public_key,PKs}]} | Os].
+
+
handle_option([], SocketOptions, SshOptions) ->
{SocketOptions, SshOptions};
handle_option([{system_dir, _} = Opt | Rest], SocketOptions, SshOptions) ->
@@ -279,8 +320,6 @@ handle_option([{silently_accept_hosts, _} = Opt | Rest], SocketOptions, SshOptio
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{user_interaction, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
-handle_option([{public_key_alg, _} = Opt | Rest], SocketOptions, SshOptions) ->
- handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{connect_timeout, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{user, _} = Opt | Rest], SocketOptions, SshOptions) ->
@@ -297,10 +336,6 @@ handle_option([{pwdfun, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{key_cb, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
-handle_option([{role, _} = Opt | Rest], SocketOptions, SshOptions) ->
- handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
-handle_option([{compression, _} = Opt | Rest], SocketOptions, SshOptions) ->
- handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
%%Backwards compatibility
handle_option([{allow_user_interaction, Value} | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option({user_interaction, Value}) | SshOptions]);
@@ -310,6 +345,8 @@ handle_option([{connectfun, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{disconnectfun, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+handle_option([{unexpectedfun, _} = Opt | Rest], SocketOptions, SshOptions) ->
+ handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{failfun, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{ssh_msg_debug_fun, _} = Opt | Rest], SocketOptions, SshOptions) ->
@@ -331,7 +368,9 @@ handle_option([{exec, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{auth_methods, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
-handle_option([{pref_public_key_algs, _} = Opt | Rest], SocketOptions, SshOptions) ->
+handle_option([{auth_method_kb_interactive_data, _} = Opt | Rest], SocketOptions, SshOptions) ->
+ handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+handle_option([{preferred_algorithms,_} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{quiet_mode, _} = Opt|Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
@@ -351,6 +390,8 @@ handle_option([{minimal_remote_max_packet_size, _} = Opt|Rest], SocketOptions, S
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{id_string, _ID} = Opt|Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
+handle_option([{profile, _ID} = Opt|Rest], SocketOptions, SshOptions) ->
+ handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, [handle_inet_option(Opt) | SocketOptions], SshOptions).
@@ -358,28 +399,17 @@ handle_option([Opt | Rest], SocketOptions, SshOptions) ->
handle_ssh_option({minimal_remote_max_packet_size, Value} = Opt) when is_integer(Value), Value >=0 ->
Opt;
handle_ssh_option({system_dir, Value} = Opt) when is_list(Value) ->
- Opt;
+ check_dir(Opt);
handle_ssh_option({user_dir, Value} = Opt) when is_list(Value) ->
- Opt;
+ check_dir(Opt);
handle_ssh_option({user_dir_fun, Value} = Opt) when is_function(Value) ->
Opt;
handle_ssh_option({silently_accept_hosts, Value} = Opt) when is_boolean(Value) ->
Opt;
handle_ssh_option({user_interaction, Value} = Opt) when is_boolean(Value) ->
Opt;
-handle_ssh_option({public_key_alg, ssh_dsa}) ->
- {public_key_alg, 'ssh-dss'};
-handle_ssh_option({public_key_alg, ssh_rsa}) ->
- {public_key_alg, 'ssh-rsa'};
-handle_ssh_option({public_key_alg, Value} = Opt) when Value == 'ssh-rsa'; Value == 'ssh-dss' ->
- Opt;
-handle_ssh_option({pref_public_key_algs, Value} = Opt) when is_list(Value), length(Value) >= 1 ->
- case handle_pref_algs(Value, []) of
- {true, NewOpts} ->
- NewOpts;
- _ ->
- throw({error, {eoptions, Opt}})
- end;
+handle_ssh_option({preferred_algorithms,[_|_]} = Opt) ->
+ handle_pref_algs(Opt);
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 ->
@@ -411,11 +441,20 @@ handle_ssh_option({exec, Function} = Opt) when is_function(Function) ->
Opt;
handle_ssh_option({auth_methods, Value} = Opt) when is_list(Value) ->
Opt;
+handle_ssh_option({auth_method_kb_interactive_data, {Name,Instruction,Prompt,Echo}} = Opt) when is_list(Name),
+ is_list(Instruction),
+ is_list(Prompt),
+ is_boolean(Echo) ->
+ Opt;
+handle_ssh_option({auth_method_kb_interactive_data, F} = Opt) when is_function(F,3) ->
+ Opt;
handle_ssh_option({infofun, Value} = Opt) when is_function(Value) ->
Opt;
handle_ssh_option({connectfun, Value} = Opt) when is_function(Value) ->
Opt;
-handle_ssh_option({disconnectfun , Value} = Opt) when is_function(Value) ->
+handle_ssh_option({disconnectfun, Value} = Opt) when is_function(Value) ->
+ Opt;
+handle_ssh_option({unexpectedfun, Value} = Opt) when is_function(Value,2) ->
Opt;
handle_ssh_option({failfun, Value} = Opt) when is_function(Value) ->
Opt;
@@ -449,6 +488,8 @@ handle_ssh_option({id_string, random}) ->
{id_string, {random,2,5}}; %% 2 - 5 random characters
handle_ssh_option({id_string, ID} = Opt) when is_list(ID) ->
Opt;
+handle_ssh_option({profile, Value} = Opt) when is_atom(Value) ->
+ Opt;
handle_ssh_option(Opt) ->
throw({error, {eoptions, Opt}}).
@@ -465,23 +506,83 @@ handle_inet_option({reuseaddr, _} = Opt) ->
%% Option verified by inet
handle_inet_option(Opt) ->
Opt.
+
+
%% Check preferred algs
-handle_pref_algs([], Acc) ->
- {true, lists:reverse(Acc)};
-handle_pref_algs([H|T], Acc) ->
- case H of
- ssh_dsa ->
- handle_pref_algs(T, ['ssh-dss'| Acc]);
- ssh_rsa ->
- handle_pref_algs(T, ['ssh-rsa'| Acc]);
- 'ssh-dss' ->
- handle_pref_algs(T, ['ssh-dss'| Acc]);
- 'ssh-rsa' ->
- handle_pref_algs(T, ['ssh-rsa'| Acc]);
- _ ->
- false
+
+handle_pref_algs({preferred_algorithms,Algs}) ->
+ try alg_duplicates(Algs, [], []) of
+ [] ->
+ {preferred_algorithms,
+ [try ssh_transport:supported_algorithms(Key)
+ of
+ DefAlgs -> handle_pref_alg(Key,Vals,DefAlgs)
+ catch
+ _:_ -> throw({error, {{eoptions, {preferred_algorithms,Key}},
+ "Bad preferred_algorithms key"}})
+ end || {Key,Vals} <- Algs]
+ };
+
+ Dups ->
+ throw({error, {{eoptions, {preferred_algorithms,Dups}}, "Duplicates found"}})
+ catch
+ _:_ ->
+ throw({error, {{eoptions, preferred_algorithms}, "Malformed"}})
end.
+alg_duplicates([{K,V}|KVs], Ks, Dups0) ->
+ Dups =
+ case lists:member(K,Ks) of
+ true ->
+ [K|Dups0];
+ false ->
+ Dups0
+ end,
+ case V--lists:usort(V) of
+ [] ->
+ alg_duplicates(KVs, [K|Ks], Dups);
+ Ds ->
+ alg_duplicates(KVs, [K|Ks], Dups++Ds)
+ end;
+alg_duplicates([], _Ks, Dups) ->
+ Dups.
+
+handle_pref_alg(Key,
+ Vs=[{client2server,C2Ss=[_|_]},{server2client,S2Cs=[_|_]}],
+ [{client2server,Sup_C2Ss},{server2client,Sup_S2Cs}]
+ ) ->
+ chk_alg_vs(Key, C2Ss, Sup_C2Ss),
+ chk_alg_vs(Key, S2Cs, Sup_S2Cs),
+ {Key, Vs};
+
+handle_pref_alg(Key,
+ Vs=[{server2client,[_|_]},{client2server,[_|_]}],
+ Sup=[{client2server,_},{server2client,_}]
+ ) ->
+ handle_pref_alg(Key, lists:reverse(Vs), Sup);
+
+handle_pref_alg(Key,
+ Vs=[V|_],
+ Sup=[{client2server,_},{server2client,_}]
+ ) when is_atom(V) ->
+ handle_pref_alg(Key, [{client2server,Vs},{server2client,Vs}], Sup);
+
+handle_pref_alg(Key,
+ Vs=[V|_],
+ Sup=[S|_]
+ ) when is_atom(V), is_atom(S) ->
+ chk_alg_vs(Key, Vs, Sup),
+ {Key, Vs};
+
+handle_pref_alg(Key, Vs, _) ->
+ throw({error, {{eoptions, {preferred_algorithms,[{Key,Vs}]}}, "Badly formed list"}}).
+
+chk_alg_vs(OptKey, Values, SupportedValues) ->
+ case (Values -- SupportedValues) of
+ [] -> Values;
+ Bad -> throw({error, {{eoptions, {OptKey,Bad}}, "Unsupported value(s) found"}})
+ end.
+
handle_ip(Inet) -> %% Default to ipv4
case lists:member(inet, Inet) of
true ->
@@ -494,4 +595,31 @@ handle_ip(Inet) -> %% Default to ipv4
[inet | Inet]
end
end.
-
+
+check_dir({_,Dir} = Opt) ->
+ case directory_exist_readable(Dir) of
+ ok ->
+ Opt;
+ {error,Error} ->
+ throw({error, {eoptions,{Opt,Error}}})
+ end.
+
+directory_exist_readable(Dir) ->
+ case file:read_file_info(Dir) of
+ {ok, #file_info{type = directory,
+ access = Access}} ->
+ case Access of
+ read -> ok;
+ read_write -> ok;
+ _ -> {error, eacces}
+ end;
+
+ {ok, #file_info{}}->
+ {error, enotdir};
+
+ {error, Error} ->
+ {error, Error}
+ end.
+
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 02:05:50 +0000