diff options
Diffstat (limited to 'lib/ssl/src/ssl_connection.erl')
| -rw-r--r-- | lib/ssl/src/ssl_connection.erl | 179 |
1 files changed, 94 insertions, 85 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl index 29e57ec801..407ec14b0a 100644 --- a/lib/ssl/src/ssl_connection.erl +++ b/lib/ssl/src/ssl_connection.erl @@ -370,23 +370,22 @@ hello(#server_hello{cipher_suite = CipherSuite, renegotiation = {Renegotiation, _}, ssl_options = SslOptions} = State0) -> case ssl_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of - #alert{} = Alert -> - handle_own_alert(Alert, ReqVersion, hello, State0), - {stop, normal, State0}; - + #alert{} = Alert -> + handle_own_alert(Alert, ReqVersion, hello, State0), + {stop, {shutdown, own_alert}, State0}; {Version, NewId, ConnectionStates, NextProtocol} -> {KeyAlgorithm, _, _, _} = ssl_cipher:suite_definition(CipherSuite), PremasterSecret = make_premaster_secret(ReqVersion, KeyAlgorithm), - - NewNextProtocol = case NextProtocol of - undefined -> - State0#state.next_protocol; - _ -> - NextProtocol - end, - + + NewNextProtocol = case NextProtocol of + undefined -> + State0#state.next_protocol; + _ -> + NextProtocol + end, + State = State0#state{key_algorithm = KeyAlgorithm, hashsign_algorithm = default_hashsign(Version, KeyAlgorithm), negotiated_version = Version, @@ -394,13 +393,13 @@ hello(#server_hello{cipher_suite = CipherSuite, premaster_secret = PremasterSecret, expecting_next_protocol_negotiation = NextProtocol =/= undefined, next_protocol = NewNextProtocol}, - + case ssl_session:is_new(OldId, NewId) of true -> handle_new_session(NewId, CipherSuite, Compression, State#state{connection_states = ConnectionStates}); false -> - handle_resumed_session(NewId, State#state{connection_states = ConnectionStates}) + handle_resumed_session(NewId, State#state{connection_states = ConnectionStates}) end end; @@ -419,8 +418,7 @@ hello(Hello = #client_hello{client_version = ClientVersion}, negotiated_version = Version, session = Session}); #alert{} = Alert -> - handle_own_alert(Alert, ClientVersion, hello, State), - {stop, normal, State} + handle_own_alert(Alert, ClientVersion, hello, State) end; hello(timeout, State) -> @@ -451,8 +449,7 @@ abbreviated(#finished{verify_data = Data} = Finished, next_state_connection(abbreviated, ack_connection(State#state{connection_states = ConnectionStates})); #alert{} = Alert -> - handle_own_alert(Alert, Version, abbreviated, State), - {stop, normal, State} + handle_own_alert(Alert, Version, abbreviated, State) end; abbreviated(#finished{verify_data = Data} = Finished, @@ -472,8 +469,7 @@ abbreviated(#finished{verify_data = Data} = Finished, connection_states = ConnectionStates})); #alert{} = Alert -> - handle_own_alert(Alert, Version, abbreviated, State), - {stop, normal, State} + handle_own_alert(Alert, Version, abbreviated, State) end; abbreviated(timeout, State) -> @@ -497,8 +493,7 @@ certify(#certificate{asn1_certificates = []}, fail_if_no_peer_cert = true}} = State) -> Alert = ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE), - handle_own_alert(Alert, Version, certify, State), - {stop, normal, State}; + handle_own_alert(Alert, Version, certify, State); certify(#certificate{asn1_certificates = []}, #state{role = server, @@ -521,8 +516,7 @@ certify(#certificate{} = Cert, handle_peer_cert(PeerCert, PublicKeyInfo, State#state{client_certificate_requested = false}); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State), - {stop, normal, State} + handle_own_alert(Alert, Version, certify, State) end; certify(#server_key_exchange{} = KeyExchangeMsg, @@ -534,8 +528,7 @@ certify(#server_key_exchange{} = KeyExchangeMsg, {Record, State} = next_record(State1), next_state(certify, certify, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end; certify(#server_key_exchange{} = Msg, @@ -559,8 +552,7 @@ certify(#server_hello_done{}, State = State0#state{connection_states = ConnectionStates}, client_certify_and_key_exchange(State); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end; %% Master secret is calculated from premaster_secret @@ -578,8 +570,7 @@ certify(#server_hello_done{}, session = Session}, client_certify_and_key_exchange(State); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end; certify(#client_key_exchange{} = Msg, @@ -595,8 +586,7 @@ certify(#client_key_exchange{exchange_keys = Keys}, certify_client_key_exchange(ssl_handshake:decode_client_key(Keys, KeyAlg, Version), State) catch #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State), - {stop, normal, State} + handle_own_alert(Alert, Version, certify, State) end; @@ -621,8 +611,7 @@ certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS {Record, State} = next_record(State1), next_state(certify, cipher, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end; certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPublicDhKey}, @@ -635,8 +624,7 @@ certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPubl {Record, State} = next_record(State1), next_state(certify, cipher, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end. %%-------------------------------------------------------------------- @@ -665,8 +653,7 @@ cipher(#certificate_verify{signature = Signature, hashsign_algorithm = CertHashS {Record, State} = next_record(State0), next_state(cipher, cipher, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, cipher, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, cipher, State0) end; % client must send a next protocol message if we are expecting it @@ -692,8 +679,7 @@ cipher(#finished{verify_data = Data} = Finished, Session = register_session(Role, Host, Port, Session0), cipher_role(Role, Data, Session, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, cipher, State), - {stop, normal, State} + handle_own_alert(Alert, Version, cipher, State) end; % only allowed to send next_protocol message after change cipher spec @@ -788,7 +774,7 @@ handle_sync_event({application_data, Data}, From, StateName, State#state{send_queue = queue:in({From, Data}, Queue)}, get_timeout(State)}; -handle_sync_event({start, Timeout} = Start, StartFrom, hello, State) -> +handle_sync_event({start, Timeout}, StartFrom, hello, State) -> start_or_recv_cancel_timer(Timeout, StartFrom), hello(start, State#state{start_or_recv_from = StartFrom}); @@ -968,7 +954,7 @@ handle_info({Protocol, _, Data}, StateName, next_state(StateName, StateName, Record, State); #alert{} = Alert -> handle_normal_shutdown(Alert, StateName, State0), - {stop, normal, State0} + {stop, {shutdown, own_alert}, State0} end; handle_info({CloseTag, Socket}, StateName, @@ -989,7 +975,7 @@ handle_info({CloseTag, Socket}, StateName, ok end, handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State), - {stop, normal, State}; + {stop, {shutdown, transport_closed}, State}; handle_info({ErrorTag, Socket, econnaborted}, StateName, #state{socket = Socket, start_or_recv_from = StartFrom, role = Role, @@ -1034,6 +1020,20 @@ 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), + handle_trusted_certs_db(State), + notify_senders(SendQueue), + notify_renegotiater(Renegotiate); + +terminate({shutdown, own_alert}, _StateName, #state{send_queue = SendQueue, + renegotiation = Renegotiate} = State) -> + handle_trusted_certs_db(State), + notify_senders(SendQueue), + notify_renegotiater(Renegotiate); + terminate(Reason, connection, #state{negotiated_version = Version, connection_states = ConnectionStates, transport_cb = Transport, @@ -1044,16 +1044,14 @@ terminate(Reason, connection, #state{negotiated_version = Version, notify_renegotiater(Renegotiate), BinAlert = terminate_alert(Reason, Version, ConnectionStates), Transport:send(Socket, BinAlert), - workaround_transport_delivery_problems(Socket, Transport, Reason), - Transport:close(Socket); + workaround_transport_delivery_problems(Socket, Transport); -terminate(Reason, _StateName, #state{transport_cb = Transport, +terminate(_Reason, _StateName, #state{transport_cb = Transport, socket = Socket, send_queue = SendQueue, renegotiation = Renegotiate} = State) -> handle_trusted_certs_db(State), notify_senders(SendQueue), notify_renegotiater(Renegotiate), - workaround_transport_delivery_problems(Socket, Transport, Reason), Transport:close(Socket). %%-------------------------------------------------------------------- @@ -1234,7 +1232,7 @@ sync_send_all_state_event(FsmPid, Event) -> {error, closed}; exit:{normal, _} -> {error, closed}; - exit:{shutdown, _} -> + exit:{{shutdown, _},_} -> {error, closed} end. @@ -1331,8 +1329,7 @@ new_server_hello(#server_hello{cipher_suite = CipherSuite, next_state(hello, certify, Record, State) catch #alert{} = Alert -> - handle_own_alert(Alert, Version, hello, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, hello, State0) end. resumed_server_hello(#state{session = Session, @@ -1352,8 +1349,7 @@ resumed_server_hello(#state{session = Session, {Record, State} = next_record(State2), next_state(hello, abbreviated, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, hello, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, hello, State0) end. handle_new_session(NewId, CipherSuite, Compression, #state{session = Session0} = State0) -> @@ -1378,8 +1374,7 @@ handle_resumed_session(SessId, #state{connection_states = ConnectionStates0, session = Session}), next_state(hello, abbreviated, Record, State); #alert{} = Alert -> - handle_own_alert(Alert, Version, hello, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, hello, State0) end. @@ -1396,8 +1391,7 @@ client_certify_and_key_exchange(#state{negotiated_version = Version} = next_state(certify, cipher, Record, State) catch throw:#alert{} = Alert -> - handle_own_alert(Alert, Version, certify, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, certify, State0) end. do_client_certify_and_key_exchange(State0) -> @@ -1969,8 +1963,7 @@ handle_tls_handshake(Handle, StateName, #state{tls_packets = [Packet | Packets]} end. next_state(Current,_, #alert{} = Alert, #state{negotiated_version = Version} = State) -> - handle_own_alert(Alert, Version, Current, State), - {stop, normal, State}; + handle_own_alert(Alert, Version, Current, State); next_state(_,Next, no_record, State) -> {next_state, Next, State, get_timeout(State)}; @@ -2008,8 +2001,7 @@ next_state(Current, Next, #ssl_tls{type = ?HANDSHAKE, fragment = Data}, State = State0#state{tls_packets = Packets, tls_handshake_buffer = Buf}, handle_tls_handshake(Handle, Next, State) catch throw:#alert{} = Alert -> - handle_own_alert(Alert, Version, Current, State0), - {stop, normal, State0} + handle_own_alert(Alert, Version, Current, State0) end; next_state(_, StateName, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, State0) -> @@ -2265,13 +2257,13 @@ handle_alert(#alert{level = ?FATAL} = Alert, StateName, handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, StateName, State) -> handle_normal_shutdown(Alert, StateName, State), - {stop, normal, State}; + {stop, {shutdown, peer_close}, State}; handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, #state{log_alert = Log, renegotiation = {true, internal}} = State) -> log_alert(Log, StateName, Alert), handle_normal_shutdown(Alert, StateName, State), - {stop, normal, State}; + {stop, {shutdown, peer_close}, State}; handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, #state{log_alert = Log, renegotiation = {true, From}} = State0) -> @@ -2324,8 +2316,8 @@ handle_own_alert(Alert, Version, StateName, try %% Try to tell the other side {BinMsg, _} = encode_alert(Alert, Version, ConnectionStates), - linux_workaround_transport_delivery_problems(Alert, Socket), - Transport:send(Socket, BinMsg) + Transport:send(Socket, BinMsg), + workaround_transport_delivery_problems(Socket, Transport) catch _:_ -> %% Can crash if we are in a uninitialized state ignore end, @@ -2334,7 +2326,8 @@ handle_own_alert(Alert, Version, StateName, handle_normal_shutdown(Alert,StateName, State) catch _:_ -> ok - end. + end, + {stop, {shutdown, own_alert}, State}. handle_normal_shutdown(Alert, _, #state{socket = Socket, start_or_recv_from = StartFrom, @@ -2349,8 +2342,7 @@ handle_normal_shutdown(Alert, StateName, #state{socket = Socket, handle_unexpected_message(Msg, Info, #state{negotiated_version = Version} = State) -> Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), - handle_own_alert(Alert, Version, {Info, Msg}, State), - {stop, normal, State}. + handle_own_alert(Alert, Version, {Info, Msg}, State). make_premaster_secret({MajVer, MinVer}, rsa) -> Rand = ssl:random_bytes(?NUM_OF_PREMASTERSECRET_BYTES-2), @@ -2408,36 +2400,35 @@ notify_renegotiater({true, From}) when not is_atom(From) -> notify_renegotiater(_) -> ok. -terminate_alert(Reason, Version, ConnectionStates) when Reason == normal; Reason == shutdown; +terminate_alert(Reason, Version, ConnectionStates) when Reason == normal; Reason == user_close -> {BinAlert, _} = encode_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), Version, ConnectionStates), BinAlert; +terminate_alert({shutdown, _}, Version, ConnectionStates) -> + {BinAlert, _} = encode_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), + Version, ConnectionStates), + BinAlert; + terminate_alert(_, Version, ConnectionStates) -> {BinAlert, _} = encode_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR), Version, ConnectionStates), BinAlert. -workaround_transport_delivery_problems(_,_, user_close) -> - ok; -workaround_transport_delivery_problems(Socket, Transport, _) -> +workaround_transport_delivery_problems(Socket, gen_tcp = Transport) -> %% Standard trick to try to make sure all - %% data sent to to tcp port is really sent - %% before tcp port is closed so that the peer will - %% get a correct error message. + %% 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. inet:setopts(Socket, [{active, false}]), Transport:shutdown(Socket, write), - Transport:recv(Socket, 0). - -linux_workaround_transport_delivery_problems(#alert{level = ?FATAL}, Socket) -> - case os:type() of - {unix, linux} -> - inet:setopts(Socket, [{nodelay, true}]); - _ -> - ok - end; -linux_workaround_transport_delivery_problems(_, _) -> - ok. + %% Will return when other side has closed or after 30 s + %% 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) -> + Transport:close(Socket). get_timeout(#state{ssl_options=#ssl_options{hibernate_after = undefined}}) -> infinity; @@ -2515,3 +2506,21 @@ start_or_recv_cancel_timer(infinity, _RecvFrom) -> ok; start_or_recv_cancel_timer(Timeout, RecvFrom) -> erlang:send_after(Timeout, self(), {cancel_start_or_recv, RecvFrom}). + +handle_unrecv_data(StateName, #state{socket = Socket, transport_cb = Transport} = State) -> + inet:setopts(Socket, [{active, false}]), + case Transport:recv(Socket, 0, 0) of + {error, closed} -> + ok; + {ok, Data} -> + handle_close_alert(Data, StateName, State) + end. + +handle_close_alert(Data, StateName, State) -> + case next_tls_record(Data, State) of + #ssl_tls{type = ?ALERT, fragment = EncAlerts} -> + [Alert|_] = decode_alerts(EncAlerts), + handle_normal_shutdown(Alert, StateName, State); + _ -> + ok + end. |