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-rw-r--r--lib/ssl/src/ssl.erl20
-rw-r--r--lib/ssl/src/ssl_connection.erl95
-rw-r--r--lib/ssl/src/tls_connection.erl55
3 files changed, 107 insertions, 63 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 120e8b59ed..f611079912 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -34,7 +34,7 @@
listen/2, transport_accept/1, transport_accept/2,
ssl_accept/1, ssl_accept/2, ssl_accept/3,
controlling_process/2, peername/1, peercert/1, sockname/1,
- close/1, shutdown/2, recv/2, recv/3, send/2, getopts/2, setopts/2
+ close/1, close/2, shutdown/2, recv/2, recv/3, send/2, getopts/2, setopts/2
]).
%% SSL/TLS protocol handling
-export([cipher_suites/0, cipher_suites/1, suite_definition/1,
@@ -247,11 +247,27 @@ ssl_accept(Socket, SslOptions, Timeout) when is_port(Socket) ->
%% Description: Close an ssl connection
%%--------------------------------------------------------------------
close(#sslsocket{pid = Pid}) when is_pid(Pid) ->
- ssl_connection:close(Pid);
+ ssl_connection:close(Pid, {close, ?DEFAULT_TIMEOUT});
close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}}}}) ->
Transport:close(ListenSocket).
%%--------------------------------------------------------------------
+-spec close(#sslsocket{}, integer() | {pid(), integer()}) -> term().
+%%
+%% Description: Close an ssl connection
+%%--------------------------------------------------------------------
+close(#sslsocket{pid = TLSPid},
+ {Pid, Timeout} = DownGrade) when is_pid(TLSPid),
+ is_pid(Pid),
+ (is_integer(Timeout) andalso Timeout > 0) or (Timeout == infinity) ->
+ ssl_connection:close(TLSPid, {close, DownGrade});
+close(#sslsocket{pid = TLSPid}, Timeout) when is_pid(TLSPid),
+ (is_integer(Timeout) andalso Timeout > 0) or (Timeout == infinity) ->
+ ssl_connection:close(TLSPid, {close, Timeout});
+close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}}}}, _) ->
+ Transport:close(ListenSocket).
+
+%%--------------------------------------------------------------------
-spec send(#sslsocket{}, iodata()) -> ok | {error, reason()}.
%%
%% Description: Sends data over the ssl connection
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 5b754c16bc..f8afbdb41d 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -41,7 +41,7 @@
socket_control/4, socket_control/5]).
%% User Events
--export([send/2, recv/3, close/1, shutdown/2,
+-export([send/2, recv/3, close/2, shutdown/2,
new_user/2, get_opts/2, set_opts/2, session_info/1,
peer_certificate/1, renegotiation/1, negotiated_protocol/1, prf/5,
connection_information/1
@@ -171,18 +171,19 @@ connection_information(Pid) when is_pid(Pid) ->
sync_send_all_state_event(Pid, connection_information).
%%--------------------------------------------------------------------
--spec close(pid()) -> ok | {error, reason()}.
+-spec close(pid(), {close, Timeout::integer() |
+ {NewController::pid(), Timeout::integer()}}) ->
+ ok | {ok, port()} | {error, reason()}.
%%
%% Description: Close an ssl connection
%%--------------------------------------------------------------------
-close(ConnectionPid) ->
- case sync_send_all_state_event(ConnectionPid, close) of
+close(ConnectionPid, How) ->
+ case sync_send_all_state_event(ConnectionPid, How) of
{error, closed} ->
ok;
Other ->
Other
end.
-
%%--------------------------------------------------------------------
-spec shutdown(pid(), atom()) -> ok | {error, reason()}.
%%
@@ -706,12 +707,12 @@ handle_sync_event({start, Timeout}, StartFrom, StateName, #state{role = Role, s
{stop, normal, {error, Error}, State0}
end;
-handle_sync_event(close, _, StateName, #state{protocol_cb = Connection} = State) ->
- %% Run terminate before returning
- %% so that the reuseaddr inet-option will work
- %% as intended.
- (catch Connection:terminate(user_close, StateName, State)),
- {stop, normal, ok, State#state{terminated = true}};
+handle_sync_event({close, _} = Close, _, StateName, #state{protocol_cb = Connection} = State) ->
+ %% Run terminate before returning so that the reuseaddr
+ %% inet-option and possible downgrade will work as intended.
+ Result = Connection:terminate(Close, StateName, State),
+ {stop, normal, Result, State#state{terminated = true}};
+
handle_sync_event({shutdown, How0}, _, StateName,
#state{transport_cb = Transport,
negotiated_version = Version,
@@ -901,41 +902,46 @@ terminate(_, _, #state{terminated = true}) ->
%% we want to guarantee that Transport:close has been called
%% when ssl:close/1 returns.
ok;
-terminate({shutdown, transport_closed}, StateName, #state{send_queue = SendQueue,
- renegotiation = Renegotiate} = State) ->
- handle_unrecv_data(StateName, State),
+terminate({shutdown, transport_closed} = Reason,
+ _StateName, #state{send_queue = SendQueue, protocol_cb = Connection,
+ socket = Socket, transport_cb = Transport,
+ renegotiation = Renegotiate} = State) ->
handle_trusted_certs_db(State),
notify_senders(SendQueue),
- notify_renegotiater(Renegotiate);
-
-terminate({shutdown, own_alert}, _StateName, #state{send_queue = SendQueue,
- renegotiation = Renegotiate} = State) ->
+ notify_renegotiater(Renegotiate),
+ Connection:close(Reason, Socket, Transport, undefined, undefined);
+terminate({shutdown, own_alert}, _StateName, #state{send_queue = SendQueue, protocol_cb = Connection,
+ socket = Socket, transport_cb = Transport,
+ renegotiation = Renegotiate} = State) ->
handle_trusted_certs_db(State),
notify_senders(SendQueue),
- notify_renegotiater(Renegotiate);
+ notify_renegotiater(Renegotiate),
+ case application:get_env(ssl, alert_timeout) of
+ {ok, Timeout} when is_integer(Timeout) ->
+ Connection:close({timeout, Timeout}, Socket, Transport, undefined, undefined);
+ _ ->
+ Connection:close({timeout, ?DEFAULT_TIMEOUT}, Socket, Transport, undefined, undefined)
+ end;
terminate(Reason, connection, #state{negotiated_version = Version,
protocol_cb = Connection,
- connection_states = ConnectionStates,
+ connection_states = ConnectionStates0,
+ ssl_options = #ssl_options{padding_check = Check},
transport_cb = Transport, socket = Socket,
send_queue = SendQueue, renegotiation = Renegotiate} = State) ->
handle_trusted_certs_db(State),
notify_senders(SendQueue),
notify_renegotiater(Renegotiate),
- BinAlert = terminate_alert(Reason, Version, ConnectionStates),
+ {BinAlert, ConnectionStates} = terminate_alert(Reason, Version, ConnectionStates0),
Transport:send(Socket, BinAlert),
- case Connection of
- tls_connection ->
- tls_connection:workaround_transport_delivery_problems(Socket, Transport);
- _ ->
- ok
- end;
-terminate(_Reason, _StateName, #state{transport_cb = Transport,
+ Connection:close(Reason, Socket, Transport, ConnectionStates, Check);
+
+terminate(Reason, _StateName, #state{transport_cb = Transport, protocol_cb = Connection,
socket = Socket, send_queue = SendQueue,
renegotiation = Renegotiate} = State) ->
handle_trusted_certs_db(State),
notify_senders(SendQueue),
notify_renegotiater(Renegotiate),
- Transport:close(Socket).
+ Connection:close(Reason, Socket, Transport, undefined, undefined).
format_status(normal, [_, State]) ->
[{data, [{"StateData", State}]}];
@@ -1758,30 +1764,17 @@ get_timeout(#state{ssl_options=#ssl_options{hibernate_after = undefined}}) ->
get_timeout(#state{ssl_options=#ssl_options{hibernate_after = HibernateAfter}}) ->
HibernateAfter.
-terminate_alert(Reason, Version, ConnectionStates) when Reason == normal;
- Reason == user_close ->
- {BinAlert, _} = ssl_alert:encode(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
- Version, ConnectionStates),
- BinAlert;
-terminate_alert({shutdown, _}, Version, ConnectionStates) ->
- {BinAlert, _} = ssl_alert:encode(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
- Version, ConnectionStates),
- BinAlert;
+terminate_alert(normal, Version, ConnectionStates) ->
+ ssl_alert:encode(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
+ Version, ConnectionStates);
+terminate_alert({Reason, _}, Version, ConnectionStates) when Reason == close;
+ Reason == shutdown ->
+ ssl_alert:encode(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
+ Version, ConnectionStates);
terminate_alert(_, Version, ConnectionStates) ->
- {BinAlert, _} = ssl_alert:encode(?ALERT_REC(?FATAL, ?INTERNAL_ERROR),
- Version, ConnectionStates),
- BinAlert.
-
-handle_unrecv_data(StateName, #state{socket = Socket, transport_cb = Transport,
- protocol_cb = Connection} = State) ->
- ssl_socket:setopts(Transport, Socket, [{active, false}]),
- case Transport:recv(Socket, 0, 0) of
- {error, closed} ->
- ok;
- {ok, Data} ->
- Connection:handle_close_alert(Data, StateName, State)
- end.
+ ssl_alert:encode(?ALERT_REC(?FATAL, ?INTERNAL_ERROR),
+ Version, ConnectionStates).
handle_trusted_certs_db(#state{ssl_options = #ssl_options{cacertfile = <<>>, cacerts = []}}) ->
%% No trusted certs specified
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 7fda2377ee..3093508f61 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -54,7 +54,7 @@
%% Alert and close handling
-export([send_alert/2, handle_own_alert/4, handle_close_alert/3,
handle_normal_shutdown/3, handle_unexpected_message/3,
- workaround_transport_delivery_problems/2, alert_user/6, alert_user/9
+ close/5, alert_user/6, alert_user/9
]).
%% Data handling
@@ -924,8 +924,7 @@ handle_own_alert(Alert, Version, StateName,
try %% Try to tell the other side
{BinMsg, _} =
ssl_alert:encode(Alert, Version, ConnectionStates),
- Transport:send(Socket, BinMsg),
- workaround_transport_delivery_problems(Socket, Transport)
+ Transport:send(Socket, BinMsg)
catch _:_ -> %% Can crash if we are in a uninitialized state
ignore
end,
@@ -977,21 +976,57 @@ invalidate_session(client, Host, Port, Session) ->
invalidate_session(server, _, Port, Session) ->
ssl_manager:invalidate_session(Port, Session).
-workaround_transport_delivery_problems(Socket, gen_tcp = Transport) ->
+%% User downgrades connection
+%% When downgrading an TLS connection to a transport connection
+%% we must recive the close message before releasing the
+%% transport socket.
+close({close, {Pid, Timeout}}, Socket, Transport, ConnectionStates, Check) when is_pid(Pid) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}, {packet, ssl_tls}]),
+ case Transport:recv(Socket, 0, Timeout) of
+ {ok, {ssl_tls, Socket, ?ALERT, Version, Fragment}} ->
+ case tls_record:decode_cipher_text(#ssl_tls{type = ?ALERT,
+ version = Version,
+ fragment = Fragment
+ }, ConnectionStates, Check) of
+ {#ssl_tls{fragment = Plain}, _} ->
+ [Alert| _] = decode_alerts(Plain),
+ downgrade(Alert, Transport, Socket, Pid)
+ end;
+ {error, timeout} ->
+ {error, timeout};
+ _ ->
+ {error, no_tls_close}
+ end;
+%% User closes or recursive call!
+close({close, Timeout}, Socket, Transport = gen_tcp, _,_) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}]),
+ Transport:shutdown(Socket, write),
+ _ = Transport:recv(Socket, 0, Timeout),
+ ok;
+%% Peer closed socket
+close({shutdown, transport_closed}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
+ close({close, 0}, Socket, Transport, ConnectionStates, Check);
+%% We generate fatal alert
+close({shutdown, own_alert}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
%% Standard trick to try to make sure all
%% data sent to the tcp port is really delivered to the
%% peer application before tcp port is closed so that the peer will
%% get the correct TLS alert message and not only a transport close.
- ssl_socket:setopts(Transport, Socket, [{active, false}]),
- Transport:shutdown(Socket, write),
- %% Will return when other side has closed or after 30 s
+ %% Will return when other side has closed or after timout millisec
%% e.g. we do not want to hang if something goes wrong
%% with the network but we want to maximise the odds that
%% peer application gets all data sent on the tcp connection.
- Transport:recv(Socket, 0, 30000);
-workaround_transport_delivery_problems(Socket, Transport) ->
+ close({close, ?DEFAULT_TIMEOUT}, Socket, Transport, ConnectionStates, Check);
+%% Other
+close(_, Socket, Transport, _,_) ->
Transport:close(Socket).
-
+downgrade(#alert{description = ?CLOSE_NOTIFY}, Transport, Socket, Pid) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]),
+ Transport:controlling_process(Socket, Pid),
+ {ok, Socket};
+downgrade(_, _,_,_) ->
+ {error, no_tls_close}.
+
convert_state(#state{ssl_options = Options} = State, up, "5.3.5", "5.3.6") ->
State#state{ssl_options = convert_options_partial_chain(Options, up)};
convert_state(#state{ssl_options = Options} = State, down, "5.3.6", "5.3.5") ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 22:05:05 +0000