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-rw-r--r--lib/ssh/src/ssh.erl111
1 files changed, 82 insertions, 29 deletions
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 5bde184070..54f94acbdc 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -235,10 +235,27 @@ start_daemon(Host, Port, Options, Inet) ->
{error, _Reason} = Error ->
Error;
{SocketOptions, SshOptions}->
- do_start_daemon(Host, Port,[{role, server} |SshOptions] , [Inet | SocketOptions])
+ try
+ do_start_daemon(Host, Port,[{role, server} |SshOptions] , [Inet | SocketOptions])
+ catch
+ throw:bad_fd -> {error,bad_fd};
+ _C:_E -> {error,{cannot_start_daemon,_C,_E}}
+ end
end.
-do_start_daemon(Host, Port, Options, SocketOptions) ->
+do_start_daemon(Host0, Port0, Options, SocketOptions) ->
+ {Host,Port} = try
+ case proplists:get_value(fd, SocketOptions) of
+ undefined ->
+ {Host0,Port0};
+ Fd when Port0==0 ->
+ find_hostport(Fd);
+ _ ->
+ {Host0,Port0}
+ end
+ catch
+ _:_ -> throw(bad_fd)
+ end,
Profile = proplists:get_value(profile, Options, ?DEFAULT_PROFILE),
case ssh_system_sup:system_supervisor(Host, Port, Profile) of
undefined ->
@@ -272,6 +289,15 @@ do_start_daemon(Host, Port, Options, SocketOptions) ->
end
end.
+find_hostport(Fd) ->
+ %% Using internal functions inet:open/8 and inet:close/0.
+ %% Don't try this at home unless you know what you are doing!
+ {ok,S} = inet:open(Fd, {0,0,0,0}, 0, [], tcp, inet, stream, inet_tcp),
+ {ok, HostPort} = inet:sockname(S),
+ ok = inet:close(S),
+ HostPort.
+
+
handle_options(Opts) ->
try handle_option(algs_compatibility(proplists:unfold(Opts)), [], []) of
{Inet, Ssh} ->
@@ -282,32 +308,27 @@ handle_options(Opts) ->
end.
-algs_compatibility(Os) ->
+algs_compatibility(Os0) ->
%% 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].
+ case proplists:get_value(public_key_alg, Os0) of
+ undefined ->
+ Os0;
+ A when is_atom(A) ->
+ %% Skip public_key_alg if pref_public_key_algs is defined:
+ Os = lists:keydelete(public_key_alg, 1, Os0),
+ case proplists:get_value(pref_public_key_algs,Os) of
+ undefined when A == 'ssh-rsa' ; A==ssh_rsa ->
+ [{pref_public_key_algs,['ssh-rsa','ssh-dss']} | Os];
+ undefined when A == 'ssh-dss' ; A==ssh_dsa ->
+ [{pref_public_key_algs,['ssh-dss','ssh-rsa']} | Os];
+ undefined ->
+ throw({error, {eoptions, {public_key_alg,A} }});
+ _ ->
+ Os
+ end;
+ V ->
+ throw({error, {eoptions, {public_key_alg,V} }})
+ end.
handle_option([], SocketOptions, SshOptions) ->
@@ -336,8 +357,12 @@ handle_option([{user_passwords, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
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([{key_cb, {Module, Options}} | Rest], SocketOptions, SshOptions) ->
+ handle_option(Rest, SocketOptions, [handle_ssh_option({key_cb, Module}),
+ handle_ssh_priv_option({key_cb_private, Options}) |
+ SshOptions]);
+handle_option([{key_cb, Module} | Rest], SocketOptions, SshOptions) ->
+ handle_option([{key_cb, {Module, []}} | Rest], SocketOptions, SshOptions);
handle_option([{keyboard_interact_fun, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
%%Backwards compatibility
@@ -374,6 +399,8 @@ handle_option([{auth_methods, _} = Opt | Rest], SocketOptions, SshOptions) ->
handle_option(Rest, SocketOptions, [handle_ssh_option(Opt) | SshOptions]);
handle_option([{auth_method_kb_interactive_data, _} = 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(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([{dh_gex_groups,_} = Opt | Rest], SocketOptions, SshOptions) ->
@@ -485,6 +512,13 @@ handle_ssh_option({dh_gex_limits,{Min,I,Max}} = Opt) when is_integer(Min), Min>0
is_integer(Max), Max>=I ->
%% Client
Opt;
+handle_ssh_option({pref_public_key_algs, Value} = Opt) when is_list(Value), length(Value) >= 1 ->
+ case handle_user_pref_pubkey_algs(Value, []) of
+ {true, NewOpts} ->
+ {pref_public_key_algs, NewOpts};
+ _ ->
+ throw({error, {eoptions, Opt}})
+ 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 ->
@@ -511,6 +545,9 @@ handle_ssh_option({pwdfun, Value} = Opt) when is_function(Value,4) ->
Opt;
handle_ssh_option({key_cb, Value} = Opt) when is_atom(Value) ->
Opt;
+handle_ssh_option({key_cb, {CallbackMod, CallbackOptions}} = Opt) when is_atom(CallbackMod),
+ is_list(CallbackOptions) ->
+ Opt;
handle_ssh_option({keyboard_interact_fun, Value} = Opt) when is_function(Value,3) ->
Opt;
handle_ssh_option({compression, Value} = Opt) when is_atom(Value) ->
@@ -577,6 +614,9 @@ handle_ssh_option({profile, Value} = Opt) when is_atom(Value) ->
handle_ssh_option(Opt) ->
throw({error, {eoptions, Opt}}).
+handle_ssh_priv_option({key_cb_private, Value} = Opt) when is_list(Value) ->
+ Opt.
+
handle_inet_option({active, _} = Opt) ->
throw({error, {{eoptions, Opt}, "SSH has built in flow control, "
"and active is handled internally, user is not allowed"
@@ -737,3 +777,16 @@ read_moduli_file(D, I, Acc) ->
end
end.
+handle_user_pref_pubkey_algs([], Acc) ->
+ {true, lists:reverse(Acc)};
+handle_user_pref_pubkey_algs([H|T], Acc) ->
+ case lists:member(H, ?SUPPORTED_USER_KEYS) of
+ true ->
+ handle_user_pref_pubkey_algs(T, [H| Acc]);
+
+ false when H==ssh_dsa -> handle_user_pref_pubkey_algs(T, ['ssh-dss'| Acc]);
+ false when H==ssh_rsa -> handle_user_pref_pubkey_algs(T, ['ssh-rsa'| Acc]);
+
+ false ->
+ false
+ end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 12:38:12 +0000