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-rw-r--r--lib/ssl/src/ssl_connection.erl427
1 files changed, 206 insertions, 221 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 2146a9272e..1f77b558ef 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -44,9 +44,21 @@
-export([send/2, recv/3, close/2, shutdown/2,
new_user/2, get_opts/2, set_opts/2,
peer_certificate/1, renegotiation/1, negotiated_protocol/1, prf/5,
- connection_information/2, handle_common_event/5
+ connection_information/2
]).
+%% Alert and close handling
+-export([handle_own_alert/4, handle_alert/3,
+ handle_normal_shutdown/3
+ ]).
+
+%% Data handling
+-export([write_application_data/3, read_application_data/2]).
+
+%% Help functions for tls|dtls_connection.erl
+-export([handle_session/7, ssl_config/3,
+ prepare_connection/2, hibernate_after/3]).
+
%% General gen_statem state functions with extra callback argument
%% to determine if it is an SSL/TLS or DTLS gen_statem machine
-export([init/4, hello/4, abbreviated/4, certify/4, cipher/4, connection/4, downgrade/4]).
@@ -54,21 +66,12 @@
%% gen_statem callbacks
-export([terminate/3, format_status/2]).
-%%
--export([handle_info/3, handle_call/5, handle_session/7, ssl_config/3,
- prepare_connection/2, hibernate_after/3]).
-
-%% Alert and close handling
--export([handle_own_alert/4,handle_alert/3,
- handle_normal_shutdown/3
- ]).
-
-%% Data handling
--export([write_application_data/3, read_application_data/2]).
+%% TODO: do not export, call state function instead
+-export([handle_info/3, handle_call/5, handle_common_event/5]).
%%====================================================================
-%% Internal application API
-%%====================================================================
+%% Setup
+%%====================================================================
%%--------------------------------------------------------------------
-spec connect(tls_connection | dtls_connection,
host(), inet:port_number(),
@@ -164,6 +167,16 @@ socket_control(dtls_connection = Connection, {_, Socket}, Pid, Transport, Listen
{error, Reason} ->
{error, Reason}
end.
+
+start_or_recv_cancel_timer(infinity, _RecvFrom) ->
+ undefined;
+start_or_recv_cancel_timer(Timeout, RecvFrom) ->
+ erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}).
+
+%%====================================================================
+%% User events
+%%====================================================================
+
%%--------------------------------------------------------------------
-spec send(pid(), iodata()) -> ok | {error, reason()}.
%%
@@ -272,6 +285,161 @@ renegotiation(ConnectionPid) ->
prf(ConnectionPid, Secret, Label, Seed, WantedLength) ->
call(ConnectionPid, {prf, Secret, Label, Seed, WantedLength}).
+%%====================================================================
+%% Alert and close handling
+%%====================================================================
+handle_own_alert(Alert, Version, StateName,
+ #state{role = Role,
+ transport_cb = Transport,
+ socket = Socket,
+ protocol_cb = Connection,
+ connection_states = ConnectionStates,
+ ssl_options = SslOpts} = State) ->
+ try %% Try to tell the other side
+ {BinMsg, _} =
+ Connection:encode_alert(Alert, Version, ConnectionStates),
+ Connection:send(Transport, Socket, BinMsg)
+ catch _:_ -> %% Can crash if we are in a uninitialized state
+ ignore
+ end,
+ try %% Try to tell the local user
+ log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), StateName, Alert#alert{role = Role}),
+ handle_normal_shutdown(Alert,StateName, State)
+ catch _:_ ->
+ ok
+ end,
+ {stop, {shutdown, own_alert}}.
+
+handle_normal_shutdown(Alert, _, #state{socket = Socket,
+ transport_cb = Transport,
+ protocol_cb = Connection,
+ start_or_recv_from = StartFrom,
+ tracker = Tracker,
+ role = Role, renegotiation = {false, first}}) ->
+ alert_user(Transport, Tracker,Socket, StartFrom, Alert, Role, Connection);
+
+handle_normal_shutdown(Alert, StateName, #state{socket = Socket,
+ socket_options = Opts,
+ transport_cb = Transport,
+ protocol_cb = Connection,
+ user_application = {_Mon, Pid},
+ tracker = Tracker,
+ start_or_recv_from = RecvFrom, role = Role}) ->
+ alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role, Connection).
+
+handle_alert(#alert{level = ?FATAL} = Alert, StateName,
+ #state{socket = Socket, transport_cb = Transport,
+ protocol_cb = Connection,
+ ssl_options = SslOpts, start_or_recv_from = From, host = Host,
+ port = Port, session = Session, user_application = {_Mon, Pid},
+ role = Role, socket_options = Opts, tracker = Tracker}) ->
+ invalidate_session(Role, Host, Port, Session),
+ log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(),
+ StateName, Alert#alert{role = opposite_role(Role)}),
+ alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role, Connection),
+ {stop, normal};
+
+handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert,
+ StateName, State) ->
+ handle_normal_shutdown(Alert, StateName, State),
+ {stop, {shutdown, peer_close}};
+
+handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
+ #state{role = Role, ssl_options = SslOpts, protocol_cb = Connection, renegotiation = {true, internal}} = State) ->
+ log_alert(SslOpts#ssl_options.log_alert, Role,
+ Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+ handle_normal_shutdown(Alert, StateName, State),
+ {stop, {shutdown, peer_close}};
+
+handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
+ #state{role = Role,
+ ssl_options = SslOpts, renegotiation = {true, From},
+ protocol_cb = Connection} = State0) ->
+ log_alert(SslOpts#ssl_options.log_alert, Role,
+ Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+ gen_statem:reply(From, {error, renegotiation_rejected}),
+ {Record, State1} = Connection:next_record(State0),
+ %% Go back to connection!
+ State = Connection:reinit_handshake_data(State1#state{renegotiation = undefined}),
+ Connection:next_event(connection, Record, State);
+
+%% Gracefully log and ignore all other warning alerts
+handle_alert(#alert{level = ?WARNING} = Alert, StateName,
+ #state{ssl_options = SslOpts, protocol_cb = Connection, role = Role} = State0) ->
+ log_alert(SslOpts#ssl_options.log_alert, Role,
+ Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
+ {Record, State} = Connection:next_record(State0),
+ Connection:next_event(StateName, Record, State).
+
+%%====================================================================
+%% Data handling
+%%====================================================================
+write_application_data(Data0, From,
+ #state{socket = Socket,
+ negotiated_version = Version,
+ protocol_cb = Connection,
+ transport_cb = Transport,
+ connection_states = ConnectionStates0,
+ socket_options = SockOpts,
+ ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = State) ->
+ Data = encode_packet(Data0, SockOpts),
+
+ case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
+ true ->
+ Connection:renegotiate(State#state{renegotiation = {true, internal}},
+ [{next_event, {call, From}, {application_data, Data0}}]);
+ false ->
+ {Msgs, ConnectionStates} = Connection:encode_data(Data, Version, ConnectionStates0),
+ Result = Connection:send(Transport, Socket, Msgs),
+ ssl_connection:hibernate_after(connection, State#state{connection_states = ConnectionStates},
+ [{reply, From, Result}])
+ end.
+
+read_application_data(Data, #state{user_application = {_Mon, Pid},
+ socket = Socket,
+ protocol_cb = Connection,
+ transport_cb = Transport,
+ socket_options = SOpts,
+ bytes_to_read = BytesToRead,
+ start_or_recv_from = RecvFrom,
+ timer = Timer,
+ user_data_buffer = Buffer0,
+ tracker = Tracker} = State0) ->
+ Buffer1 = if
+ Buffer0 =:= <<>> -> Data;
+ Data =:= <<>> -> Buffer0;
+ true -> <<Buffer0/binary, Data/binary>>
+ end,
+ case get_data(SOpts, BytesToRead, Buffer1) of
+ {ok, ClientData, Buffer} -> % Send data
+ SocketOpt = deliver_app_data(Transport, Socket, SOpts,
+ ClientData, Pid, RecvFrom, Tracker, Connection),
+ cancel_timer(Timer),
+ State = State0#state{user_data_buffer = Buffer,
+ start_or_recv_from = undefined,
+ timer = undefined,
+ bytes_to_read = undefined,
+ socket_options = SocketOpt
+ },
+ if
+ SocketOpt#socket_options.active =:= false; Buffer =:= <<>> ->
+ %% Passive mode, wait for active once or recv
+ %% Active and empty, get more data
+ Connection:next_record_if_active(State);
+ true -> %% We have more data
+ read_application_data(<<>>, State)
+ end;
+ {more, Buffer} -> % no reply, we need more data
+ Connection:next_record(State0#state{user_data_buffer = Buffer});
+ {passive, Buffer} ->
+ Connection:next_record_if_active(State0#state{user_data_buffer = Buffer});
+ {error,_Reason} -> %% Invalid packet in packet mode
+ deliver_packet_error(Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker, Connection),
+ {stop, normal, State0}
+ end.
+%%====================================================================
+%% Help functions for tls|dtls_connection.erl
+%%====================================================================
%%--------------------------------------------------------------------
-spec handle_session(#server_hello{}, ssl_record:ssl_version(),
binary(), ssl_record:connection_states(), _,_, #state{}) ->
@@ -340,7 +508,7 @@ ssl_config(Opts, Role, State) ->
ssl_options = Opts}.
%%====================================================================
-%% gen_statem state functions
+%% gen_statem general state functions with connection cb argument
%%====================================================================
%%--------------------------------------------------------------------
-spec init(gen_statem:event_type(),
@@ -393,7 +561,6 @@ hello(Type, Msg, State, Connection) ->
%%--------------------------------------------------------------------
abbreviated({call, From}, Msg, State, Connection) ->
handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
-
abbreviated(internal, #finished{verify_data = Data} = Finished,
#state{role = server,
negotiated_version = Version,
@@ -414,7 +581,6 @@ abbreviated(internal, #finished{verify_data = Data} = Finished,
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
end;
-
abbreviated(internal, #finished{verify_data = Data} = Finished,
#state{role = client, tls_handshake_history = Handshake0,
session = #session{master_secret = MasterSecret},
@@ -434,7 +600,6 @@ abbreviated(internal, #finished{verify_data = Data} = Finished,
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
end;
-
%% only allowed to send next_protocol message after change cipher spec
%% & before finished message and it is not allowed during renegotiation
abbreviated(internal, #next_protocol{selected_protocol = SelectedProtocol},
@@ -475,7 +640,6 @@ certify(internal, #certificate{asn1_certificates = []},
State, _) ->
Alert = ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE),
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
-
certify(internal, #certificate{asn1_certificates = []},
#state{role = server,
ssl_options = #ssl_options{verify = verify_peer,
@@ -484,7 +648,6 @@ certify(internal, #certificate{asn1_certificates = []},
{Record, State} =
Connection:next_record(State0#state{client_certificate_requested = false}),
Connection:next_event(?FUNCTION_NAME, Record, State);
-
certify(internal, #certificate{},
#state{role = server,
negotiated_version = Version,
@@ -492,7 +655,6 @@ certify(internal, #certificate{},
State, _) ->
Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, unrequested_certificate),
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State);
-
certify(internal, #certificate{} = Cert,
#state{negotiated_version = Version,
role = Role,
@@ -509,7 +671,6 @@ certify(internal, #certificate{} = Cert,
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
end;
-
certify(internal, #server_key_exchange{exchange_keys = Keys},
#state{role = client, negotiated_version = Version,
key_algorithm = Alg,
@@ -542,7 +703,6 @@ certify(internal, #server_key_exchange{exchange_keys = Keys},
Version, ?FUNCTION_NAME, State)
end
end;
-
certify(internal, #certificate_request{} = CertRequest,
#state{session = #session{own_certificate = Cert},
role = client,
@@ -556,7 +716,6 @@ certify(internal, #certificate_request{} = CertRequest,
Connection:next_event(?FUNCTION_NAME, Record,
State#state{cert_hashsign_algorithm = NegotiatedHashSign})
end;
-
%% PSK and RSA_PSK might bypass the Server-Key-Exchange
certify(internal, #server_hello_done{},
#state{session = #session{master_secret = undefined},
@@ -575,7 +734,6 @@ certify(internal, #server_hello_done{},
State0#state{premaster_secret = PremasterSecret}),
client_certify_and_key_exchange(State, Connection)
end;
-
certify(internal, #server_hello_done{},
#state{session = #session{master_secret = undefined},
ssl_options = #ssl_options{user_lookup_fun = PSKLookup},
@@ -596,7 +754,6 @@ certify(internal, #server_hello_done{},
State0#state{premaster_secret = RSAPremasterSecret}),
client_certify_and_key_exchange(State, Connection)
end;
-
%% Master secret was determined with help of server-key exchange msg
certify(internal, #server_hello_done{},
#state{session = #session{master_secret = MasterSecret} = Session,
@@ -612,7 +769,6 @@ certify(internal, #server_hello_done{},
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
end;
-
%% Master secret is calculated from premaster_secret
certify(internal, #server_hello_done{},
#state{session = Session0,
@@ -630,7 +786,6 @@ certify(internal, #server_hello_done{},
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
end;
-
certify(internal = Type, #client_key_exchange{} = Msg,
#state{role = server,
client_certificate_requested = true,
@@ -638,7 +793,6 @@ certify(internal = Type, #client_key_exchange{} = Msg,
Connection) ->
%% We expect a certificate here
handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection);
-
certify(internal, #client_key_exchange{exchange_keys = Keys},
State = #state{key_algorithm = KeyAlg, negotiated_version = Version}, Connection) ->
try
@@ -648,7 +802,6 @@ certify(internal, #client_key_exchange{exchange_keys = Keys},
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
end;
-
certify(Type, Msg, State, Connection) ->
handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection).
@@ -660,10 +813,8 @@ certify(Type, Msg, State, Connection) ->
%%--------------------------------------------------------------------
cipher({call, From}, Msg, State, Connection) ->
handle_call(Msg, From, ?FUNCTION_NAME, State, Connection);
-
cipher(info, Msg, State, _) ->
handle_info(Msg, ?FUNCTION_NAME, State);
-
cipher(internal, #certificate_verify{signature = Signature,
hashsign_algorithm = CertHashSign},
#state{role = server,
@@ -686,14 +837,12 @@ cipher(internal, #certificate_verify{signature = Signature,
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State0)
end;
-
%% client must send a next protocol message if we are expecting it
cipher(internal, #finished{},
#state{role = server, expecting_next_protocol_negotiation = true,
negotiated_protocol = undefined, negotiated_version = Version} = State0,
_Connection) ->
handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, ?FUNCTION_NAME, State0);
-
cipher(internal, #finished{verify_data = Data} = Finished,
#state{negotiated_version = Version,
host = Host,
@@ -716,7 +865,6 @@ cipher(internal, #finished{verify_data = Data} = Finished,
#alert{} = Alert ->
handle_own_alert(Alert, Version, ?FUNCTION_NAME, State)
end;
-
%% only allowed to send next_protocol message after change cipher spec
%% & before finished message and it is not allowed during renegotiation
cipher(internal, #next_protocol{selected_protocol = SelectedProtocol},
@@ -958,25 +1106,21 @@ handle_info({ErrorTag, Socket, econnaborted}, StateName,
alert_user(Transport, Tracker,Socket,
StartFrom, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role, Connection),
{stop, normal, State};
-
handle_info({ErrorTag, Socket, Reason}, StateName, #state{socket = Socket,
error_tag = ErrorTag} = State) ->
Report = io_lib:format("SSL: Socket error: ~p ~n", [Reason]),
error_logger:info_report(Report),
handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
{stop, normal, State};
-
handle_info({'DOWN', MonitorRef, _, _, _}, _,
State = #state{user_application={MonitorRef,_Pid}}) ->
{stop, normal, State};
-
%%% So that terminate will be run when supervisor issues shutdown
handle_info({'EXIT', _Sup, shutdown}, _StateName, State) ->
{stop, shutdown, State};
handle_info({'EXIT', Socket, normal}, _StateName, #state{socket = Socket} = State) ->
%% Handle as transport close"
{stop, {shutdown, transport_closed}, State};
-
handle_info(allow_renegotiate, StateName, State) ->
{next_state, StateName, State#state{allow_renegotiate = true}};
@@ -984,13 +1128,11 @@ handle_info({cancel_start_or_recv, StartFrom}, StateName,
#state{renegotiation = {false, first}} = State) when StateName =/= connection ->
{stop_and_reply, {shutdown, user_timeout},
{reply, StartFrom, {error, timeout}}, State#state{timer = undefined}};
-
handle_info({cancel_start_or_recv, RecvFrom}, StateName,
#state{start_or_recv_from = RecvFrom} = State) when RecvFrom =/= undefined ->
{next_state, StateName, State#state{start_or_recv_from = undefined,
bytes_to_read = undefined,
timer = undefined}, [{reply, RecvFrom, {error, timeout}}]};
-
handle_info({cancel_start_or_recv, _RecvFrom}, StateName, State) ->
{next_state, StateName, State#state{timer = undefined}};
@@ -999,9 +1141,9 @@ handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = State) ->
error_logger:info_report(Report),
{next_state, StateName, State}.
-%%--------------------------------------------------------------------
-%% gen_statem callbacks
-%%--------------------------------------------------------------------
+%%====================================================================
+%% general gen_statem callbacks
+%%====================================================================
terminate(_, _, #state{terminated = true}) ->
%% Happens when user closes the connection using ssl:close/1
%% we want to guarantee that Transport:close has been called
@@ -1010,7 +1152,6 @@ terminate(_, _, #state{terminated = true}) ->
%% returning. In both cases terminate has been run manually
%% before run by gen_statem which will end up here
ok;
-
terminate({shutdown, transport_closed} = Reason,
_StateName, #state{protocol_cb = Connection,
socket = Socket, transport_cb = Transport} = State) ->
@@ -1037,7 +1178,6 @@ terminate(Reason, connection, #state{negotiated_version = Version,
{BinAlert, ConnectionStates} = terminate_alert(Reason, Version, ConnectionStates0, Connection),
Connection:send(Transport, Socket, BinAlert),
Connection:close(Reason, Socket, Transport, ConnectionStates, Check);
-
terminate(Reason, _StateName, #state{transport_cb = Transport, protocol_cb = Connection,
socket = Socket
} = State) ->
@@ -1071,119 +1211,6 @@ format_status(terminate, [_, StateName, State]) ->
}}]}].
%%--------------------------------------------------------------------
-%%%
-%%--------------------------------------------------------------------
-write_application_data(Data0, From,
- #state{socket = Socket,
- negotiated_version = Version,
- protocol_cb = Connection,
- transport_cb = Transport,
- connection_states = ConnectionStates0,
- socket_options = SockOpts,
- ssl_options = #ssl_options{renegotiate_at = RenegotiateAt}} = State) ->
- Data = encode_packet(Data0, SockOpts),
-
- case time_to_renegotiate(Data, ConnectionStates0, RenegotiateAt) of
- true ->
- Connection:renegotiate(State#state{renegotiation = {true, internal}},
- [{next_event, {call, From}, {application_data, Data0}}]);
- false ->
- {Msgs, ConnectionStates} = Connection:encode_data(Data, Version, ConnectionStates0),
- Result = Connection:send(Transport, Socket, Msgs),
- ssl_connection:hibernate_after(connection, State#state{connection_states = ConnectionStates},
- [{reply, From, Result}])
- end.
-
-read_application_data(Data, #state{user_application = {_Mon, Pid},
- socket = Socket,
- protocol_cb = Connection,
- transport_cb = Transport,
- socket_options = SOpts,
- bytes_to_read = BytesToRead,
- start_or_recv_from = RecvFrom,
- timer = Timer,
- user_data_buffer = Buffer0,
- tracker = Tracker} = State0) ->
- Buffer1 = if
- Buffer0 =:= <<>> -> Data;
- Data =:= <<>> -> Buffer0;
- true -> <<Buffer0/binary, Data/binary>>
- end,
- case get_data(SOpts, BytesToRead, Buffer1) of
- {ok, ClientData, Buffer} -> % Send data
- SocketOpt = deliver_app_data(Transport, Socket, SOpts,
- ClientData, Pid, RecvFrom, Tracker, Connection),
- cancel_timer(Timer),
- State = State0#state{user_data_buffer = Buffer,
- start_or_recv_from = undefined,
- timer = undefined,
- bytes_to_read = undefined,
- socket_options = SocketOpt
- },
- if
- SocketOpt#socket_options.active =:= false; Buffer =:= <<>> ->
- %% Passive mode, wait for active once or recv
- %% Active and empty, get more data
- Connection:next_record_if_active(State);
- true -> %% We have more data
- read_application_data(<<>>, State)
- end;
- {more, Buffer} -> % no reply, we need more data
- Connection:next_record(State0#state{user_data_buffer = Buffer});
- {passive, Buffer} ->
- Connection:next_record_if_active(State0#state{user_data_buffer = Buffer});
- {error,_Reason} -> %% Invalid packet in packet mode
- deliver_packet_error(Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker, Connection),
- {stop, normal, State0}
- end.
-%%--------------------------------------------------------------------
-%%%
-%%--------------------------------------------------------------------
-handle_alert(#alert{level = ?FATAL} = Alert, StateName,
- #state{socket = Socket, transport_cb = Transport,
- protocol_cb = Connection,
- ssl_options = SslOpts, start_or_recv_from = From, host = Host,
- port = Port, session = Session, user_application = {_Mon, Pid},
- role = Role, socket_options = Opts, tracker = Tracker}) ->
- invalidate_session(Role, Host, Port, Session),
- log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(),
- StateName, Alert#alert{role = opposite_role(Role)}),
- alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role, Connection),
- {stop, normal};
-
-handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert,
- StateName, State) ->
- handle_normal_shutdown(Alert, StateName, State),
- {stop, {shutdown, peer_close}};
-
-handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
- #state{role = Role, ssl_options = SslOpts, protocol_cb = Connection, renegotiation = {true, internal}} = State) ->
- log_alert(SslOpts#ssl_options.log_alert, Role,
- Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
- handle_normal_shutdown(Alert, StateName, State),
- {stop, {shutdown, peer_close}};
-
-handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
- #state{role = Role,
- ssl_options = SslOpts, renegotiation = {true, From},
- protocol_cb = Connection} = State0) ->
- log_alert(SslOpts#ssl_options.log_alert, Role,
- Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
- gen_statem:reply(From, {error, renegotiation_rejected}),
- {Record, State1} = Connection:next_record(State0),
- %% Go back to connection!
- State = Connection:reinit_handshake_data(State1#state{renegotiation = undefined}),
- Connection:next_event(connection, Record, State);
-
-%% Gracefully log and ignore all other warning alerts
-handle_alert(#alert{level = ?WARNING} = Alert, StateName,
- #state{ssl_options = SslOpts, protocol_cb = Connection, role = Role} = State0) ->
- log_alert(SslOpts#ssl_options.log_alert, Role,
- Connection:protocol_name(), StateName, Alert#alert{role = opposite_role(Role)}),
- {Record, State} = Connection:next_record(State0),
- Connection:next_event(StateName, Record, State).
-
-%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
connection_info(#state{sni_hostname = SNIHostname,
@@ -1300,7 +1327,6 @@ handle_peer_cert_key(client, _,
ECDHKey = public_key:generate_key(PublicKeyParams),
PremasterSecret = ssl_handshake:premaster_secret(PublicKey, ECDHKey),
master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey});
-
%% We do currently not support cipher suites that use fixed DH.
%% If we want to implement that the following clause can be used
%% to extract DH parameters form cert.
@@ -1320,7 +1346,6 @@ certify_client(#state{client_certificate_requested = true, role = client,
= State, Connection) ->
Certificate = ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, client),
Connection:queue_handshake(Certificate, State);
-
certify_client(#state{client_certificate_requested = false} = State, _) ->
State.
@@ -1370,10 +1395,26 @@ server_certify_and_key_exchange(State0, Connection) ->
request_client_cert(State2, Connection).
certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS},
- #state{private_key = Key} = State, Connection) ->
- PremasterSecret = ssl_handshake:premaster_secret(EncPMS, Key),
- calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
+ #state{private_key = Key, client_hello_version = {Major, Minor} = Version} = State, Connection) ->
+ %% Countermeasure for Bleichenbacher attack always provide some kind of premaster secret
+ %% and fail handshake later.RFC 5246 section 7.4.7.1.
+ PremasterSecret =
+ try ssl_handshake:premaster_secret(EncPMS, Key) of
+ Secret when erlang:byte_size(Secret) == ?NUM_OF_PREMASTERSECRET_BYTES ->
+ case Secret of
+ <<?BYTE(Major), ?BYTE(Minor), _/binary>> -> %% Correct
+ Secret;
+ <<?BYTE(_), ?BYTE(_), Rest/binary>> -> %% Version mismatch
+ <<?BYTE(Major), ?BYTE(Minor), Rest/binary>>
+ end;
+ _ -> %% erlang:byte_size(Secret) =/= ?NUM_OF_PREMASTERSECRET_BYTES
+ make_premaster_secret(Version, rsa)
+ catch
+ #alert{description = ?DECRYPT_ERROR} ->
+ make_premaster_secret(Version, rsa)
+ end,
+ calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPublicDhKey},
#state{diffie_hellman_params = #'DHParameter'{} = Params,
diffie_hellman_keys = {_, ServerDhPrivateKey}} = State,
@@ -1385,14 +1426,12 @@ certify_client_key_exchange(#client_ec_diffie_hellman_public{dh_public = ClientP
#state{diffie_hellman_keys = ECDHKey} = State, Connection) ->
PremasterSecret = ssl_handshake:premaster_secret(#'ECPoint'{point = ClientPublicEcDhPoint}, ECDHKey),
calculate_master_secret(PremasterSecret, State, Connection, certify, cipher);
-
certify_client_key_exchange(#client_psk_identity{} = ClientKey,
#state{ssl_options =
#ssl_options{user_lookup_fun = PSKLookup}} = State0,
Connection) ->
PremasterSecret = ssl_handshake:premaster_secret(ClientKey, PSKLookup),
calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
-
certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey,
#state{diffie_hellman_params = #'DHParameter'{} = Params,
diffie_hellman_keys = {_, ServerDhPrivateKey},
@@ -1409,7 +1448,6 @@ certify_client_key_exchange(#client_rsa_psk_identity{} = ClientKey,
Connection) ->
PremasterSecret = ssl_handshake:premaster_secret(ClientKey, Key, PSKLookup),
calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher);
-
certify_client_key_exchange(#client_srp_public{} = ClientKey,
#state{srp_params = Params,
srp_keys = Key
@@ -1423,7 +1461,6 @@ certify_server(#state{key_algorithm = Algo} = State, _) when Algo == dh_anon;
Algo == dhe_psk;
Algo == srp_anon ->
State;
-
certify_server(#state{cert_db = CertDbHandle,
cert_db_ref = CertDbRef,
session = #session{own_certificate = OwnCert}} = State, Connection) ->
@@ -1457,7 +1494,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
PrivateKey}),
State = Connection:queue_handshake(Msg, State0),
State#state{diffie_hellman_keys = DHKeys};
-
key_exchange(#state{role = server, private_key = Key, key_algorithm = Algo} = State, _)
when Algo == ecdh_ecdsa; Algo == ecdh_rsa ->
State#state{diffie_hellman_keys = Key};
@@ -1483,7 +1519,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
PrivateKey}),
State = Connection:queue_handshake(Msg, State0),
State#state{diffie_hellman_keys = ECDHKeys};
-
key_exchange(#state{role = server, key_algorithm = psk,
ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
State;
@@ -1504,7 +1539,6 @@ key_exchange(#state{role = server, key_algorithm = psk,
ServerRandom,
PrivateKey}),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = server, key_algorithm = dhe_psk,
ssl_options = #ssl_options{psk_identity = PskIdentityHint},
hashsign_algorithm = HashSignAlgo,
@@ -1526,7 +1560,6 @@ key_exchange(#state{role = server, key_algorithm = dhe_psk,
PrivateKey}),
State = Connection:queue_handshake(Msg, State0),
State#state{diffie_hellman_keys = DHKeys};
-
key_exchange(#state{role = server, key_algorithm = rsa_psk,
ssl_options = #ssl_options{psk_identity = undefined}} = State, _) ->
State;
@@ -1547,7 +1580,6 @@ key_exchange(#state{role = server, key_algorithm = rsa_psk,
ServerRandom,
PrivateKey}),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = server, key_algorithm = Algo,
ssl_options = #ssl_options{user_lookup_fun = LookupFun},
hashsign_algorithm = HashSignAlgo,
@@ -1578,7 +1610,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
State = Connection:queue_handshake(Msg, State0),
State#state{srp_params = SrpParams,
srp_keys = Keys};
-
key_exchange(#state{role = client,
key_algorithm = rsa,
public_key_info = PublicKeyInfo,
@@ -1586,7 +1617,6 @@ key_exchange(#state{role = client,
premaster_secret = PremasterSecret} = State0, Connection) ->
Msg = rsa_key_exchange(ssl:tls_version(Version), PremasterSecret, PublicKeyInfo),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = client,
key_algorithm = Algorithm,
negotiated_version = Version,
@@ -1607,7 +1637,6 @@ key_exchange(#state{role = client,
Algorithm == ecdh_anon ->
Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Keys}),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = client,
ssl_options = SslOpts,
key_algorithm = psk,
@@ -1615,7 +1644,6 @@ key_exchange(#state{role = client,
Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version),
{psk, SslOpts#ssl_options.psk_identity}),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = client,
ssl_options = SslOpts,
key_algorithm = dhe_psk,
@@ -1635,7 +1663,6 @@ key_exchange(#state{role = client,
Msg = rsa_psk_key_exchange(ssl:tls_version(Version), SslOpts#ssl_options.psk_identity,
PremasterSecret, PublicKeyInfo),
Connection:queue_handshake(Msg, State0);
-
key_exchange(#state{role = client,
key_algorithm = Algorithm,
negotiated_version = Version,
@@ -2005,10 +2032,7 @@ set_socket_opts(_,_, _, [{active, _} = Opt| _], SockOpts, _) ->
set_socket_opts(ConnectionCb, Transport, Socket, [Opt | Opts], SockOpts, Other) ->
set_socket_opts(ConnectionCb, Transport, Socket, Opts, SockOpts, [Opt | Other]).
-start_or_recv_cancel_timer(infinity, _RecvFrom) ->
- undefined;
-start_or_recv_cancel_timer(Timeout, RecvFrom) ->
- erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}).
+
hibernate_after(connection = StateName,
#state{ssl_options=#ssl_options{hibernate_after = HibernateAfter}} = State,
@@ -2393,45 +2417,6 @@ log_alert(true, Role, ProtocolName, StateName, Alert) ->
log_alert(false, _, _, _, _) ->
ok.
-handle_own_alert(Alert, Version, StateName,
- #state{role = Role,
- transport_cb = Transport,
- socket = Socket,
- protocol_cb = Connection,
- connection_states = ConnectionStates,
- ssl_options = SslOpts} = State) ->
- try %% Try to tell the other side
- {BinMsg, _} =
- Connection:encode_alert(Alert, Version, ConnectionStates),
- Connection:send(Transport, Socket, BinMsg)
- catch _:_ -> %% Can crash if we are in a uninitialized state
- ignore
- end,
- try %% Try to tell the local user
- log_alert(SslOpts#ssl_options.log_alert, Role, Connection:protocol_name(), StateName, Alert#alert{role = Role}),
- handle_normal_shutdown(Alert,StateName, State)
- catch _:_ ->
- ok
- end,
- {stop, {shutdown, own_alert}}.
-
-handle_normal_shutdown(Alert, _, #state{socket = Socket,
- transport_cb = Transport,
- protocol_cb = Connection,
- start_or_recv_from = StartFrom,
- tracker = Tracker,
- role = Role, renegotiation = {false, first}}) ->
- alert_user(Transport, Tracker,Socket, StartFrom, Alert, Role, Connection);
-
-handle_normal_shutdown(Alert, StateName, #state{socket = Socket,
- socket_options = Opts,
- transport_cb = Transport,
- protocol_cb = Connection,
- user_application = {_Mon, Pid},
- tracker = Tracker,
- start_or_recv_from = RecvFrom, role = Role}) ->
- alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role, Connection).
-
invalidate_session(client, Host, Port, Session) ->
ssl_manager:invalidate_session(Host, Port, Session);
invalidate_session(server, _, Port, Session) ->