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-rw-r--r--lib/ssh/src/ssh.erl6
-rw-r--r--lib/ssh/src/ssh_auth.erl5
-rw-r--r--lib/ssh/src/ssh_connection_handler.erl58
-rw-r--r--lib/ssh/src/ssh_transport.erl19
-rw-r--r--lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl9
-rw-r--r--lib/ssh/test/ssh_basic_SUITE.erl62
-rw-r--r--lib/ssh/test/ssh_protocol_SUITE.erl5
7 files changed, 112 insertions, 52 deletions
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl
index 1a5d48baca..032d87bdad 100644
--- a/lib/ssh/src/ssh.erl
+++ b/lib/ssh/src/ssh.erl
@@ -188,6 +188,7 @@ daemon(Port) ->
daemon(Socket, UserOptions) when is_port(Socket) ->
try
#{} = Options = ssh_options:handle_options(server, UserOptions),
+
case valid_socket_to_use(Socket, ?GET_OPT(transport,Options)) of
ok ->
{ok, {IP,Port}} = inet:sockname(Socket),
@@ -461,6 +462,9 @@ open_listen_socket(_Host0, Port0, Options0) ->
%%%----------------------------------------------------------------
finalize_start(Host, Port, Profile, Options0, F) ->
try
+ %% throws error:Error if no usable hostkey is found
+ ssh_connection_handler:available_hkey_algorithms(server, Options0),
+
sshd_sup:start_child(Host, Port, Profile, Options0)
of
{error, {already_started, _}} ->
@@ -470,6 +474,8 @@ finalize_start(Host, Port, Profile, Options0, F) ->
Result = {ok,_} ->
F(Options0, Result)
catch
+ error:{shutdown,Err} ->
+ {error,Err};
exit:{noproc, _} ->
{error, ssh_not_started}
end.
diff --git a/lib/ssh/src/ssh_auth.erl b/lib/ssh/src/ssh_auth.erl
index ac64a7bf14..894877f8bf 100644
--- a/lib/ssh/src/ssh_auth.erl
+++ b/lib/ssh/src/ssh_auth.erl
@@ -145,14 +145,17 @@ get_public_key(SigAlg, #ssh{opts = Opts}) ->
case KeyCb:user_key(KeyAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
{ok, PrivKey} ->
try
+ %% Check the key - the KeyCb may be a buggy plugin
+ true = ssh_transport:valid_key_sha_alg(PrivKey, KeyAlg),
Key = ssh_transport:extract_public_key(PrivKey),
public_key:ssh_encode(Key, ssh2_pubkey)
of
PubKeyBlob -> {ok,{PrivKey,PubKeyBlob}}
catch
_:_ ->
- not_ok
+ not_ok
end;
+
_Error ->
not_ok
end.
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 4158a52a27..802bf62570 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -46,6 +46,7 @@
%%% Internal application API
-export([start_connection/4,
+ available_hkey_algorithms/2,
open_channel/6,
request/6, request/7,
reply_request/3,
@@ -432,13 +433,12 @@ init_ssh_record(Role, Socket, Opts) ->
init_ssh_record(Role, Socket, PeerAddr, Opts).
init_ssh_record(Role, _Socket, PeerAddr, Opts) ->
- KeyCb = ?GET_OPT(key_cb, Opts),
AuthMethods = ?GET_OPT(auth_methods, Opts),
S0 = #ssh{role = Role,
- key_cb = KeyCb,
+ key_cb = ?GET_OPT(key_cb, Opts),
opts = Opts,
userauth_supported_methods = AuthMethods,
- available_host_keys = supported_host_keys(Role, KeyCb, Opts),
+ available_host_keys = available_hkey_algorithms(Role, Opts),
random_length_padding = ?GET_OPT(max_random_length_padding, Opts)
},
@@ -1544,44 +1544,42 @@ peer_role(client) -> server;
peer_role(server) -> client.
%%--------------------------------------------------------------------
-supported_host_keys(client, _, Options) ->
- try
- find_sup_hkeys(Options)
- of
- [] ->
+available_hkey_algorithms(Role, Options) ->
+ KeyCb = ?GET_OPT(key_cb, Options),
+ case [A || A <- available_hkey_algos(Options),
+ (Role==client) orelse available_host_key(KeyCb, A, Options)
+ ] of
+
+ [] when Role==client ->
error({shutdown, "No public key algs"});
- Algs ->
- [atom_to_list(A) || A<-Algs]
- catch
- exit:Reason ->
- error({shutdown, Reason})
- end;
-supported_host_keys(server, KeyCb, Options) ->
- [atom_to_list(A) || A <- find_sup_hkeys(Options),
- available_host_key(KeyCb, A, Options)
- ].
+ [] when Role==server ->
+ error({shutdown, "No host key available"});
-find_sup_hkeys(Options) ->
- case proplists:get_value(public_key,
- ?GET_OPT(preferred_algorithms,Options)
- )
- of
- undefined ->
- ssh_transport:default_algorithms(public_key);
- L ->
- NonSupported = L--ssh_transport:supported_algorithms(public_key),
- L -- NonSupported
+ Algs ->
+ [atom_to_list(A) || A<-Algs]
end.
+available_hkey_algos(Options) ->
+ SupAlgos = ssh_transport:supported_algorithms(public_key),
+ HKeys = proplists:get_value(public_key,
+ ?GET_OPT(preferred_algorithms,Options)
+ ),
+ NonSupported = HKeys -- SupAlgos,
+ AvailableAndSupported = HKeys -- NonSupported,
+ AvailableAndSupported.
+
%% Alg :: atom()
available_host_key({KeyCb,KeyCbOpts}, Alg, Opts) ->
UserOpts = ?GET_OPT(user_options, Opts),
case KeyCb:host_key(Alg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
- {ok,_} -> true;
- _ -> false
+ {ok,Key} ->
+ %% Check the key - the KeyCb may be a buggy plugin
+ ssh_transport:valid_key_sha_alg(Key, Alg);
+ _ ->
+ false
end.
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index e92c727559..d8f7a96c15 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -795,8 +795,14 @@ get_host_key(SSH, SignAlg) ->
#ssh{key_cb = {KeyCb,KeyCbOpts}, opts = Opts} = SSH,
UserOpts = ?GET_OPT(user_options, Opts),
case KeyCb:host_key(SignAlg, [{key_cb_private,KeyCbOpts}|UserOpts]) of
- {ok, PrivHostKey} -> PrivHostKey;
- Result -> exit({error, {Result, unsupported_key_type}})
+ {ok, PrivHostKey} ->
+ %% Check the key - the KeyCb may be a buggy plugin
+ case valid_key_sha_alg(PrivHostKey, SignAlg) of
+ true -> PrivHostKey;
+ false -> exit({error, bad_hostkey})
+ end;
+ Result ->
+ exit({error, {Result, unsupported_key_type}})
end.
extract_public_key(#'RSAPrivateKey'{modulus = N, publicExponent = E}) ->
@@ -1830,11 +1836,14 @@ valid_key_sha_alg(#'RSAPrivateKey'{}, 'ssh-rsa' ) -> true;
valid_key_sha_alg({_, #'Dss-Parms'{}}, 'ssh-dss') -> true;
valid_key_sha_alg(#'DSAPrivateKey'{}, 'ssh-dss') -> true;
-valid_key_sha_alg({#'ECPoint'{},{namedCurve,OID}}, Alg) -> sha(OID) == sha(Alg);
-valid_key_sha_alg(#'ECPrivateKey'{parameters = {namedCurve,OID}}, Alg) -> sha(OID) == sha(Alg);
+valid_key_sha_alg({#'ECPoint'{},{namedCurve,OID}}, Alg) -> valid_key_sha_alg_ec(OID, Alg);
+valid_key_sha_alg(#'ECPrivateKey'{parameters = {namedCurve,OID}}, Alg) -> valid_key_sha_alg_ec(OID, Alg);
valid_key_sha_alg(_, _) -> false.
-
+valid_key_sha_alg_ec(OID, Alg) ->
+ Curve = public_key:oid2ssh_curvename(OID),
+ Alg == list_to_atom("ecdsa-sha2-" ++ binary_to_list(Curve)).
+
public_algo(#'RSAPublicKey'{}) -> 'ssh-rsa'; % FIXME: Not right with draft-curdle-rsa-sha2
public_algo({_, #'Dss-Parms'{}}) -> 'ssh-dss';
diff --git a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
index c07140dc43..19e2754eba 100644
--- a/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
+++ b/lib/ssh/test/property_test/ssh_eqc_client_info_timing.erl
@@ -57,9 +57,9 @@
%%% Properties:
-prop_seq(_Config) ->
+prop_seq(Config) ->
{ok,Pid} = ssh_eqc_event_handler:add_report_handler(),
- {_, _, Port} = init_daemon(),
+ {_, _, Port} = init_daemon(Config),
numtests(1000,
?FORALL(Delay, choose(0,100),%% Micro seconds
try
@@ -86,7 +86,8 @@ any_relevant_error_report(Pid) ->
end, Reports).
%%%================================================================
-init_daemon() ->
+init_daemon(Config) ->
ok = begin ssh:stop(), ssh:start() end,
- ssh_test_lib:daemon([]).
+ DataDir = proplists:get_value(data_dir, Config),
+ ssh_test_lib:daemon([{system_dir,DataDir}]).
diff --git a/lib/ssh/test/ssh_basic_SUITE.erl b/lib/ssh/test/ssh_basic_SUITE.erl
index db2ae241e5..202b0afe57 100644
--- a/lib/ssh/test/ssh_basic_SUITE.erl
+++ b/lib/ssh/test/ssh_basic_SUITE.erl
@@ -46,6 +46,7 @@
exec_key_differs2/1,
exec_key_differs3/1,
exec_key_differs_fail/1,
+ fail_daemon_start/1,
idle_time_client/1,
idle_time_server/1,
inet6_option/1,
@@ -105,6 +106,7 @@ all() ->
{group, host_user_key_differs},
{group, key_cb},
{group, internal_error},
+ {group, rsa_host_key_is_actualy_ecdsa},
daemon_already_started,
double_close,
daemon_opt_fd,
@@ -121,6 +123,7 @@ groups() ->
{ecdsa_sha2_nistp256_key, [], basic_tests()},
{ecdsa_sha2_nistp384_key, [], basic_tests()},
{ecdsa_sha2_nistp521_key, [], basic_tests()},
+ {rsa_host_key_is_actualy_ecdsa, [], [fail_daemon_start]},
{host_user_key_differs, [], [exec_key_differs1,
exec_key_differs2,
exec_key_differs3,
@@ -180,6 +183,31 @@ init_per_group(rsa_key, Config) ->
false ->
{skip, unsupported_pub_key}
end;
+init_per_group(rsa_host_key_is_actualy_ecdsa, Config) ->
+ case
+ lists:member('ssh-rsa',
+ ssh_transport:default_algorithms(public_key)) and
+ lists:member('ecdsa-sha2-nistp256',
+ ssh_transport:default_algorithms(public_key))
+ of
+ true ->
+ DataDir = proplists:get_value(data_dir, Config),
+ PrivDir = proplists:get_value(priv_dir, Config),
+ ssh_test_lib:setup_ecdsa("256", DataDir, PrivDir),
+ %% The following sets up bad rsa keys:
+ begin
+ UserDir = PrivDir,
+ System = filename:join(UserDir, "system"),
+ file:copy(filename:join(DataDir, "id_rsa"), filename:join(UserDir, "id_rsa")),
+ file:rename(filename:join(System, "ssh_host_ecdsa_key"), filename:join(System, "ssh_host_rsa_key")),
+ file:rename(filename:join(System, "ssh_host_ecdsa_key.pub"), filename:join(System, "ssh_host_rsa_key.pub")),
+ ssh_test_lib:setup_rsa_known_host(DataDir, UserDir),
+ ssh_test_lib:setup_rsa_auth_keys(DataDir, UserDir)
+ end,
+ Config;
+ false ->
+ {skip, unsupported_pub_key}
+ end;
init_per_group(ecdsa_sha2_nistp256_key, Config) ->
case lists:member('ecdsa-sha2-nistp256',
ssh_transport:default_algorithms(public_key)) of
@@ -304,7 +332,8 @@ init_per_group(internal_error, Config) ->
DataDir = proplists:get_value(data_dir, Config),
PrivDir = proplists:get_value(priv_dir, Config),
ssh_test_lib:setup_dsa(DataDir, PrivDir),
- file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
+ %% In the test case the key will be deleted after the daemon start:
+ %% ... file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
Config;
init_per_group(dir_options, Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
@@ -868,12 +897,17 @@ key_callback_options(Config) when is_list(Config) ->
%%% Test that client does not hang if disconnects due to internal error
internal_error(Config) when is_list(Config) ->
process_flag(trap_exit, true),
- SystemDir = filename:join(proplists:get_value(priv_dir, Config), system),
+ PrivDir = proplists:get_value(priv_dir, Config),
UserDir = proplists:get_value(priv_dir, Config),
+ SystemDir = filename:join(PrivDir, system),
{Pid, Host, Port} = ssh_test_lib:daemon([{system_dir, SystemDir},
{user_dir, UserDir},
{failfun, fun ssh_test_lib:failfun/2}]),
+
+ %% Now provoke an error in the following connect:
+ file:delete(filename:join(PrivDir, "system/ssh_host_dsa_key")),
+
{error, Error} =
ssh:connect(Host, Port, [{silently_accept_hosts, true},
{user_dir, UserDir},
@@ -902,6 +936,17 @@ send(Config) when is_list(Config) ->
%%--------------------------------------------------------------------
+%%%
+fail_daemon_start(Config) when is_list(Config) ->
+ process_flag(trap_exit, true),
+ SystemDir = filename:join(proplists:get_value(priv_dir, Config), system),
+ UserDir = proplists:get_value(priv_dir, Config),
+
+ {error,_} = ssh_test_lib:daemon([{system_dir, SystemDir},
+ {user_dir, UserDir},
+ {failfun, fun ssh_test_lib:failfun/2}]).
+
+%%--------------------------------------------------------------------
%%% Test ssh:connection_info([peername, sockname])
peername_sockname(Config) when is_list(Config) ->
process_flag(trap_exit, true),
@@ -1300,14 +1345,11 @@ shell_exit_status(Config) when is_list(Config) ->
%%--------------------------------------------------------------------
%% Due to timing the error message may or may not be delivered to
%% the "tcp-application" before the socket closed message is recived
-check_error("Invalid state") ->
- ok;
-check_error("Connection closed") ->
- ok;
-check_error("Selection of key exchange algorithm failed"++_) ->
- ok;
-check_error(Error) ->
- ct:fail(Error).
+check_error("Invalid state") -> ok;
+check_error("Connection closed") -> ok;
+check_error("Selection of key exchange algorithm failed"++_) -> ok;
+check_error("No host key available") -> ok;
+check_error(Error) -> ct:fail(Error).
basic_test(Config) ->
ClientOpts = proplists:get_value(client_opts, Config),
diff --git a/lib/ssh/test/ssh_protocol_SUITE.erl b/lib/ssh/test/ssh_protocol_SUITE.erl
index 74f802cf57..3e3e151781 100644
--- a/lib/ssh/test/ssh_protocol_SUITE.erl
+++ b/lib/ssh/test/ssh_protocol_SUITE.erl
@@ -630,11 +630,12 @@ client_handles_keyboard_interactive_0_pwds(Config) ->
%%%--------------------------------------------------------------------
-client_info_line(_Config) ->
+client_info_line(Config) ->
%% A client must not send an info-line. If it does, the server should handle
%% handle this gracefully
{ok,Pid} = ssh_eqc_event_handler:add_report_handler(),
- {_, _, Port} = ssh_test_lib:daemon([]),
+ DataDir = proplists:get_value(data_dir, Config),
+ {_, _, Port} = ssh_test_lib:daemon([{system_dir,DataDir}]),
%% Fake client:
{ok,S} = gen_tcp:connect("localhost",Port,[]),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 03:37:55 +0000