diff options
Diffstat (limited to 'lib/ssl/src/ssl_connection.erl')
| -rw-r--r-- | lib/ssl/src/ssl_connection.erl | 801 |
1 files changed, 620 insertions, 181 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl index 53282998d0..2db9172d50 100644 --- a/lib/ssl/src/ssl_connection.erl +++ b/lib/ssl/src/ssl_connection.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2016. All Rights Reserved. +%% Copyright Ericsson AB 2013-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -44,7 +44,7 @@ -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 + connection_information/1, handle_common_event/5 ]). %% General gen_statem state functions with extra callback argument @@ -58,13 +58,21 @@ -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]). %%==================================================================== %% Internal application API %%==================================================================== %%-------------------------------------------------------------------- -spec connect(tls_connection | dtls_connection, - host(), inet:port_number(), port(), + host(), inet:port_number(), + port() | {tuple(), port()}, %% TLS | DTLS {#ssl_options{}, #socket_options{}, %% Tracker only needed on server side undefined}, @@ -138,14 +146,24 @@ socket_control(Connection, Socket, Pid, Transport) -> -spec socket_control(tls_connection | dtls_connection, port(), pid(), atom(), pid()| undefined) -> {ok, #sslsocket{}} | {error, reason()}. %%-------------------------------------------------------------------- -socket_control(Connection, Socket, Pid, Transport, ListenTracker) -> +socket_control(Connection, Socket, Pid, Transport, udp_listner) -> + %% dtls listner process must have the socket control + {ok, Connection:socket(Pid, Transport, Socket, Connection, undefined)}; + +socket_control(tls_connection = Connection, Socket, Pid, Transport, ListenTracker) -> + case Transport:controlling_process(Socket, Pid) of + ok -> + {ok, Connection:socket(Pid, Transport, Socket, Connection, ListenTracker)}; + {error, Reason} -> + {error, Reason} + end; +socket_control(dtls_connection = Connection, {_, Socket}, Pid, Transport, ListenTracker) -> case Transport:controlling_process(Socket, Pid) of ok -> - {ok, ssl_socket:socket(Pid, Transport, Socket, Connection, ListenTracker)}; + {ok, Connection:socket(Pid, Transport, Socket, Connection, ListenTracker)}; {error, Reason} -> {error, Reason} end. - %%-------------------------------------------------------------------- -spec send(pid(), iodata()) -> ok | {error, reason()}. %% @@ -264,7 +282,7 @@ prf(ConnectionPid, Secret, Label, Seed, WantedLength) -> %%-------------------------------------------------------------------- -spec handle_session(#server_hello{}, ssl_record:ssl_version(), - binary(), #connection_states{}, _,_, #state{}) -> + binary(), ssl_record:connection_states(), _,_, #state{}) -> gen_statem:state_function_result(). %%-------------------------------------------------------------------- handle_session(#server_hello{cipher_suite = CipherSuite, @@ -272,19 +290,21 @@ handle_session(#server_hello{cipher_suite = CipherSuite, Version, NewId, ConnectionStates, ProtoExt, Protocol0, #state{session = #session{session_id = OldId}, negotiated_version = ReqVersion, - negotiated_protocol = CurrentProtocol} = State0) -> + negotiated_protocol = CurrentProtocol} = State0) -> {KeyAlgorithm, _, _, _} = ssl_cipher:suite_definition(CipherSuite), PremasterSecret = make_premaster_secret(ReqVersion, KeyAlgorithm), - {ExpectNPN, Protocol} = case Protocol0 of - undefined -> {false, CurrentProtocol}; - _ -> {ProtoExt =:= npn, Protocol0} - end, + {ExpectNPN, Protocol} = case Protocol0 of + undefined -> + {false, CurrentProtocol}; + _ -> + {ProtoExt =:= npn, Protocol0} + end, State = State0#state{key_algorithm = KeyAlgorithm, - negotiated_version = Version, + negotiated_version = Version, connection_states = ConnectionStates, premaster_secret = PremasterSecret, expecting_next_protocol_negotiation = ExpectNPN, @@ -303,8 +323,14 @@ handle_session(#server_hello{cipher_suite = CipherSuite, -spec ssl_config(#ssl_options{}, client | server, #state{}) -> #state{}. %%-------------------------------------------------------------------- ssl_config(Opts, Role, State) -> - {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, CRLDbInfo, - OwnCert, Key, DHParams} = + {ok, #{cert_db_ref := Ref, + cert_db_handle := CertDbHandle, + fileref_db_handle := FileRefHandle, + session_cache := CacheHandle, + crl_db_info := CRLDbHandle, + private_key := Key, + dh_params := DHParams, + own_certificate := OwnCert}} = ssl_config:init(Opts, Role), Handshake = ssl_handshake:init_handshake_history(), TimeStamp = erlang:monotonic_time(), @@ -315,7 +341,7 @@ ssl_config(Opts, Role, State) -> file_ref_db = FileRefHandle, cert_db_ref = Ref, cert_db = CertDbHandle, - crl_db = CRLDbInfo, + crl_db = CRLDbHandle, session_cache = CacheHandle, private_key = Key, diffie_hellman_params = DHParams, @@ -337,11 +363,13 @@ init({call, From}, {start, Timeout}, State0, Connection) -> timer = Timer}), Connection:next_event(hello, Record, State); init({call, From}, {start, {Opts, EmOpts}, Timeout}, - #state{role = Role} = State0, Connection) -> + #state{role = Role, ssl_options = OrigSSLOptions, + socket_options = SockOpts} = State0, Connection) -> try - State = ssl_config(Opts, Role, State0), + SslOpts = ssl:handle_options(Opts, OrigSSLOptions), + State = ssl_config(SslOpts, Role, State0), init({call, From}, {start, Timeout}, - State#state{ssl_options = Opts, socket_options = EmOpts}, Connection) + State#state{ssl_options = SslOpts, socket_options = new_emulated(EmOpts, SockOpts)}, Connection) catch throw:Error -> {stop_and_reply, normal, {reply, From, {error, Error}}} end; @@ -382,7 +410,7 @@ abbreviated(internal, #finished{verify_data = Data} = Finished, session = #session{master_secret = MasterSecret}, connection_states = ConnectionStates0} = State0, Connection) -> - case ssl_handshake:verify_connection(Version, Finished, client, + case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished, client, get_current_prf(ConnectionStates0, write), MasterSecret, Handshake) of verified -> @@ -392,7 +420,7 @@ abbreviated(internal, #finished{verify_data = Data} = Finished, expecting_finished = false}, Connection), Connection:next_event(connection, Record, State); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, abbreviated, State0) + handle_own_alert(Alert, Version, abbreviated, State0) end; abbreviated(internal, #finished{verify_data = Data} = Finished, @@ -400,19 +428,19 @@ abbreviated(internal, #finished{verify_data = Data} = Finished, session = #session{master_secret = MasterSecret}, negotiated_version = Version, connection_states = ConnectionStates0} = State0, Connection) -> - case ssl_handshake:verify_connection(Version, Finished, server, + case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished, server, get_pending_prf(ConnectionStates0, write), MasterSecret, Handshake0) of verified -> ConnectionStates1 = ssl_record:set_server_verify_data(current_read, Data, ConnectionStates0), - State1 = + {State1, Actions} = finalize_handshake(State0#state{connection_states = ConnectionStates1}, abbreviated, Connection), {Record, State} = prepare_connection(State1#state{expecting_finished = false}, Connection), - Connection:next_event(connection, Record, State); + Connection:next_event(connection, Record, State, Actions); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, abbreviated, State0) + handle_own_alert(Alert, Version, abbreviated, State0) end; %% only allowed to send next_protocol message after change cipher spec @@ -452,9 +480,9 @@ certify(internal, #certificate{asn1_certificates = []}, #state{role = server, negotiated_version = Version, ssl_options = #ssl_options{verify = verify_peer, fail_if_no_peer_cert = true}} = - State, Connection) -> + State, _) -> Alert = ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE), - Connection:handle_own_alert(Alert, Version, certify, State); + handle_own_alert(Alert, Version, certify, State); certify(internal, #certificate{asn1_certificates = []}, #state{role = server, @@ -469,9 +497,9 @@ certify(internal, #certificate{}, #state{role = server, negotiated_version = Version, ssl_options = #ssl_options{verify = verify_none}} = - State, Connection) -> + State, _) -> Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, unrequested_certificate), - Connection:handle_own_alert(Alert, Version, certify, State); + handle_own_alert(Alert, Version, certify, State); certify(internal, #certificate{} = Cert, #state{negotiated_version = Version, @@ -492,7 +520,7 @@ certify(internal, #certificate{} = Cert, handle_peer_cert(Role, PeerCert, PublicKeyInfo, State#state{client_certificate_requested = false}, Connection); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State) + handle_own_alert(Alert, Version, certify, State) end; certify(internal, #server_key_exchange{exchange_keys = Keys}, @@ -506,10 +534,10 @@ certify(internal, #server_key_exchange{exchange_keys = Keys}, Alg == psk; Alg == dhe_psk; Alg == rsa_psk; Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon -> - Params = ssl_handshake:decode_server_key(Keys, Alg, Version), + Params = ssl_handshake:decode_server_key(Keys, Alg, ssl:tls_version(Version)), %% Use negotiated value if TLS-1.2 otherwhise return default - HashSign = negotiated_hashsign(Params#server_key_params.hashsign, Alg, PubKeyInfo, Version), + HashSign = negotiated_hashsign(Params#server_key_params.hashsign, Alg, PubKeyInfo, ssl:tls_version(Version)), case is_anonymous(Alg) of true -> @@ -517,26 +545,25 @@ certify(internal, #server_key_exchange{exchange_keys = Keys}, State#state{hashsign_algorithm = HashSign}, Connection); false -> case ssl_handshake:verify_server_key(Params, HashSign, - ConnectionStates, Version, PubKeyInfo) of + ConnectionStates, ssl:tls_version(Version), PubKeyInfo) of true -> calculate_secret(Params#server_key_params.params, State#state{hashsign_algorithm = HashSign}, Connection); false -> - Connection:handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR), + handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR), Version, certify, State) end end; -certify(internal, #certificate_request{hashsign_algorithms = HashSigns}, +certify(internal, #certificate_request{} = CertRequest, #state{session = #session{own_certificate = Cert}, - key_algorithm = KeyExAlg, + role = client, ssl_options = #ssl_options{signature_algs = SupportedHashSigns}, negotiated_version = Version} = State0, Connection) -> - - case ssl_handshake:select_hashsign(HashSigns, Cert, KeyExAlg, SupportedHashSigns, Version) of + case ssl_handshake:select_hashsign(CertRequest, Cert, SupportedHashSigns, ssl:tls_version(Version)) of #alert {} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0); + handle_own_alert(Alert, Version, certify, State0); NegotiatedHashSign -> {Record, State} = Connection:next_record(State0#state{client_certificate_requested = true}), Connection:next_event(certify, Record, @@ -555,7 +582,7 @@ certify(internal, #server_hello_done{}, when Alg == psk -> case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup) of #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0); + handle_own_alert(Alert, Version, certify, State0); PremasterSecret -> State = master_secret(PremasterSecret, State0#state{premaster_secret = PremasterSecret}), @@ -576,7 +603,7 @@ certify(internal, #server_hello_done{}, case ssl_handshake:premaster_secret({Alg, PSKIdentity}, PSKLookup, RSAPremasterSecret) of #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0); + handle_own_alert(Alert, Version, certify, State0); PremasterSecret -> State = master_secret(PremasterSecret, State0#state{premaster_secret = RSAPremasterSecret}), @@ -590,13 +617,13 @@ certify(internal, #server_hello_done{}, negotiated_version = Version, premaster_secret = undefined, role = client} = State0, Connection) -> - case ssl_handshake:master_secret(record_cb(Connection), Version, Session, + case ssl_handshake:master_secret(ssl:tls_version(Version), Session, ConnectionStates0, client) of {MasterSecret, ConnectionStates} -> State = State0#state{connection_states = ConnectionStates}, client_certify_and_key_exchange(State, Connection); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0) + handle_own_alert(Alert, Version, certify, State0) end; %% Master secret is calculated from premaster_secret @@ -606,7 +633,7 @@ certify(internal, #server_hello_done{}, negotiated_version = Version, premaster_secret = PremasterSecret, role = client} = State0, Connection) -> - case ssl_handshake:master_secret(record_cb(Connection), Version, PremasterSecret, + case ssl_handshake:master_secret(ssl:tls_version(Version), PremasterSecret, ConnectionStates0, client) of {MasterSecret, ConnectionStates} -> Session = Session0#session{master_secret = MasterSecret}, @@ -614,7 +641,7 @@ certify(internal, #server_hello_done{}, session = Session}, client_certify_and_key_exchange(State, Connection); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0) + handle_own_alert(Alert, Version, certify, State0) end; certify(internal = Type, #client_key_exchange{} = Msg, @@ -628,11 +655,11 @@ certify(internal = Type, #client_key_exchange{} = Msg, certify(internal, #client_key_exchange{exchange_keys = Keys}, State = #state{key_algorithm = KeyAlg, negotiated_version = Version}, Connection) -> try - certify_client_key_exchange(ssl_handshake:decode_client_key(Keys, KeyAlg, Version), + certify_client_key_exchange(ssl_handshake:decode_client_key(Keys, KeyAlg, ssl:tls_version(Version)), State, Connection) catch #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State) + handle_own_alert(Alert, Version, certify, State) end; certify(Type, Msg, State, Connection) -> @@ -663,21 +690,21 @@ cipher(internal, #certificate_verify{signature = Signature, %% Use negotiated value if TLS-1.2 otherwhise return default HashSign = negotiated_hashsign(CertHashSign, KexAlg, PublicKeyInfo, Version), case ssl_handshake:certificate_verify(Signature, PublicKeyInfo, - Version, HashSign, MasterSecret, Handshake) of + ssl:tls_version(Version), HashSign, MasterSecret, Handshake) of valid -> {Record, State} = Connection:next_record(State0), Connection:next_event(cipher, Record, State#state{cert_hashsign_algorithm = HashSign}); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, cipher, State0) + handle_own_alert(Alert, Version, cipher, 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) -> - Connection:handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, cipher, State0); + _Connection) -> + handle_own_alert(?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), Version, cipher, State0); cipher(internal, #finished{verify_data = Data} = Finished, #state{negotiated_version = Version, @@ -689,7 +716,7 @@ cipher(internal, #finished{verify_data = Data} = Finished, = Session0, connection_states = ConnectionStates0, tls_handshake_history = Handshake0} = State, Connection) -> - case ssl_handshake:verify_connection(Version, Finished, + case ssl_handshake:verify_connection(ssl:tls_version(Version), Finished, opposite_role(Role), get_current_prf(ConnectionStates0, read), MasterSecret, Handshake0) of @@ -698,7 +725,7 @@ cipher(internal, #finished{verify_data = Data} = Finished, cipher_role(Role, Data, Session, State#state{expecting_finished = false}, Connection); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, cipher, State) + handle_own_alert(Alert, Version, cipher, State) end; %% only allowed to send next_protocol message after change cipher spec @@ -731,7 +758,7 @@ connection({call, From}, {application_data, Data}, %% parallize send and receive decoding and not block the receiver %% if sending is overloading the socket. try - Connection:write_application_data(Data, From, State) + write_application_data(Data, From, State) catch throw:Error -> hibernate_after(connection, State, [{reply, From, Error}]) end; @@ -780,7 +807,7 @@ connection(Type, Msg, State, Connection) -> downgrade(internal, #alert{description = ?CLOSE_NOTIFY}, #state{transport_cb = Transport, socket = Socket, downgrade = {Pid, From}} = State, _) -> - ssl_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]), + tls_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]), Transport:controlling_process(Socket, Pid), gen_statem:reply(From, {ok, Socket}), {stop, normal, State}; @@ -802,35 +829,37 @@ handle_common_event(internal, {handshake, {#hello_request{}, _}}, StateName, #st when StateName =/= connection -> {keep_state_and_data}; handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName, - #state{tls_handshake_history = Hs0} = State0, Connection) -> + #state{tls_handshake_history = Hs0, + ssl_options = #ssl_options{v2_hello_compatible = V2HComp}} = State0, + Connection) -> + + PossibleSNI = Connection:select_sni_extension(Handshake), %% This function handles client SNI hello extension when Handshake is %% a client_hello, which needs to be determined by the connection callback. %% In other cases this is a noop - State = Connection:handle_sni_extension(Handshake, State0), - HsHist = ssl_handshake:update_handshake_history(Hs0, Raw), + State = handle_sni_extension(PossibleSNI, State0), + HsHist = ssl_handshake:update_handshake_history(Hs0, iolist_to_binary(Raw), V2HComp), {next_state, StateName, State#state{tls_handshake_history = HsHist}, [{next_event, internal, Handshake}]}; -handle_common_event(internal, {tls_record, TLSRecord}, StateName, State, Connection) -> - Connection:handle_common_event(internal, TLSRecord, StateName, State); +handle_common_event(internal, {protocol_record, TLSorDTLSRecord}, StateName, State, Connection) -> + Connection:handle_common_event(internal, TLSorDTLSRecord, StateName, State); handle_common_event(timeout, hibernate, _, _, _) -> {keep_state_and_data, [hibernate]}; handle_common_event(internal, {application_data, Data}, StateName, State0, Connection) -> - case Connection:read_application_data(Data, State0) of + case read_application_data(Data, State0) of {stop, Reason, State} -> {stop, Reason, State}; {Record, State} -> Connection:next_event(StateName, Record, State) end; handle_common_event(internal, #change_cipher_spec{type = <<1>>}, StateName, - #state{negotiated_version = Version} = State, Connection) -> - Connection:handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE), Version, + #state{negotiated_version = Version} = State, _) -> + handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE), Version, StateName, State); -handle_common_event(internal, _, _, _, _) -> - {keep_state_and_data, [postpone]}; handle_common_event(_Type, Msg, StateName, #state{negotiated_version = Version} = State, - Connection) -> - Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), - Connection:handle_own_alert(Alert, Version, {StateName, Msg}, State). + _) -> + Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE, {unexpected_msg, Msg}), + handle_own_alert(Alert, Version, StateName, State). handle_call({application_data, _Data}, _, _, _, _) -> %% In renegotiation priorities handshake, send data when handshake is finished @@ -843,24 +872,24 @@ handle_call({close, {Pid, Timeout}}, From, StateName, State0, Connection) when i %% When downgrading an TLS connection to a transport connection %% we must recive the close alert from the peer before releasing the %% transport socket. - {next_state, downgrade, State, [{timeout, Timeout, downgrade}]}; + {next_state, downgrade, State#state{terminated = true}, [{timeout, Timeout, downgrade}]}; handle_call({close, _} = Close, From, StateName, State, Connection) -> %% Run terminate before returning so that the reuseaddr - %% inet-option - Result = Connection:terminate(Close, StateName, State), + %% inet-option works properly + Result = Connection:terminate(Close, StateName, State#state{terminated = true}), {stop_and_reply, {shutdown, normal}, {reply, From, Result}, State}; handle_call({shutdown, How0}, From, _, #state{transport_cb = Transport, negotiated_version = Version, connection_states = ConnectionStates, - socket = Socket}, _) -> + socket = Socket}, Connection) -> case How0 of How when How == write; How == both -> Alert = ?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), {BinMsg, _} = - ssl_alert:encode(Alert, Version, ConnectionStates), - Transport:send(Socket, BinMsg); + Connection:encode_alert(Alert, Version, ConnectionStates), + Connection:send(Transport, Socket, BinMsg); _ -> ok end, @@ -908,9 +937,8 @@ handle_call(renegotiate, From, StateName, _, _) when StateName =/= connection -> handle_call({prf, Secret, Label, Seed, WantedLength}, From, _, #state{connection_states = ConnectionStates, negotiated_version = Version}, _) -> - ConnectionState = + #{security_parameters := SecParams} = ssl_record:current_connection_state(ConnectionStates, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{master_secret = MasterSecret, client_random = ClientRandom, server_random = ServerRandom, @@ -925,7 +953,7 @@ handle_call({prf, Secret, Label, Seed, WantedLength}, From, _, (client_random, Acc) -> [ClientRandom|Acc]; (server_random, Acc) -> [ServerRandom|Acc] end, [], Seed)), - ssl_handshake:prf(Version, PRFAlgorithm, SecretToUse, Label, SeedToUse, WantedLength) + ssl_handshake:prf(ssl:tls_version(Version), PRFAlgorithm, SecretToUse, Label, SeedToUse, WantedLength) catch exit:_ -> {error, badarg}; error:Reason -> {error, Reason} @@ -936,20 +964,19 @@ handle_call(_,_,_,_,_) -> handle_info({ErrorTag, Socket, econnaborted}, StateName, #state{socket = Socket, transport_cb = Transport, - start_or_recv_from = StartFrom, role = Role, protocol_cb = Connection, + start_or_recv_from = StartFrom, role = Role, error_tag = ErrorTag, tracker = Tracker} = State) when StateName =/= connection -> - Connection:alert_user(Transport, Tracker,Socket, - StartFrom, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role), + 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, - protocol_cb = Connection, error_tag = ErrorTag} = State) -> Report = io_lib:format("SSL: Socket error: ~p ~n", [Reason]), error_logger:info_report(Report), - Connection:handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State), + handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State), {stop, normal, State}; handle_info({'DOWN', MonitorRef, _, _, _}, _, @@ -991,7 +1018,10 @@ handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = State) -> terminate(_, _, #state{terminated = true}) -> %% Happens when user closes the connection using ssl:close/1 %% we want to guarantee that Transport:close has been called - %% when ssl:close/1 returns. + %% when ssl:close/1 returns unless it is a downgrade where + %% we want to guarantee that close alert is recived before + %% 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, @@ -1017,8 +1047,8 @@ terminate(Reason, connection, #state{negotiated_version = Version, transport_cb = Transport, socket = Socket } = State) -> handle_trusted_certs_db(State), - {BinAlert, ConnectionStates} = terminate_alert(Reason, Version, ConnectionStates0), - Transport:send(Socket, BinAlert), + {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, @@ -1052,15 +1082,135 @@ format_status(terminate, [_, StateName, State]) -> ssl_options = NewOptions, flight_buffer = ?SECRET_PRINTOUT} }}]}]. + +%%-------------------------------------------------------------------- +%%% +%%-------------------------------------------------------------------- +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, StateName, Alert), + 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{ssl_options = SslOpts, renegotiation = {true, internal}} = State) -> + log_alert(SslOpts#ssl_options.log_alert, StateName, Alert), + handle_normal_shutdown(Alert, StateName, State), + {stop, {shutdown, peer_close}}; + +handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, + #state{ssl_options = SslOpts, renegotiation = {true, From}, + protocol_cb = Connection} = State0) -> + log_alert(SslOpts#ssl_options.log_alert, StateName, Alert), + gen_statem:reply(From, {error, renegotiation_rejected}), + {Record, State} = Connection:next_record(State0), + %% Go back to connection! + 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} = State0) -> + log_alert(SslOpts#ssl_options.log_alert, StateName, Alert), + {Record, State} = Connection:next_record(State0), + Connection:next_event(StateName, Record, State). + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- connection_info(#state{sni_hostname = SNIHostname, - session = #session{cipher_suite = CipherSuite}, - negotiated_version = Version, ssl_options = Opts}) -> - [{protocol, tls_record:protocol_version(Version)}, - {cipher_suite, ssl_cipher:erl_suite_definition(CipherSuite)}, - {sni_hostname, SNIHostname}] ++ ssl_options_list(Opts). + session = #session{cipher_suite = CipherSuite, ecc = ECCCurve}, + protocol_cb = Connection, + negotiated_version = {_,_} = Version, + ssl_options = Opts}) -> + RecordCB = record_cb(Connection), + CipherSuiteDef = ssl_cipher:erl_suite_definition(CipherSuite), + IsNamedCurveSuite = lists:member(element(1,CipherSuiteDef), + [ecdh_ecdsa, ecdhe_ecdsa, ecdh_anon]), + CurveInfo = case ECCCurve of + {namedCurve, Curve} when IsNamedCurveSuite -> + [{ecc, {named_curve, pubkey_cert_records:namedCurves(Curve)}}]; + _ -> + [] + end, + [{protocol, RecordCB:protocol_version(Version)}, + {cipher_suite, CipherSuiteDef}, + {sni_hostname, SNIHostname} | CurveInfo] ++ ssl_options_list(Opts). do_server_hello(Type, #hello_extensions{next_protocol_negotiation = NextProtocols} = ServerHelloExt, @@ -1070,7 +1220,7 @@ do_server_hello(Type, #hello_extensions{next_protocol_negotiation = NextProtocol = State0, Connection) when is_atom(Type) -> ServerHello = - ssl_handshake:server_hello(SessId, Version, ConnectionStates0, ServerHelloExt), + ssl_handshake:server_hello(SessId, ssl:tls_version(Version), ConnectionStates0, ServerHelloExt), State = server_hello(ServerHello, State0#state{expecting_next_protocol_negotiation = NextProtocols =/= undefined}, Connection), @@ -1088,33 +1238,33 @@ new_server_hello(#server_hello{cipher_suite = CipherSuite, negotiated_version = Version} = State0, Connection) -> try server_certify_and_key_exchange(State0, Connection) of #state{} = State1 -> - State2 = server_hello_done(State1, Connection), + {State2, Actions} = server_hello_done(State1, Connection), Session = Session0#session{session_id = SessionId, cipher_suite = CipherSuite, compression_method = Compression}, {Record, State} = Connection:next_record(State2#state{session = Session}), - Connection:next_event(certify, Record, State) + Connection:next_event(certify, Record, State, Actions) catch #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, hello, State0) + handle_own_alert(Alert, Version, hello, State0) end. resumed_server_hello(#state{session = Session, connection_states = ConnectionStates0, negotiated_version = Version} = State0, Connection) -> - case ssl_handshake:master_secret(record_cb(Connection), Version, Session, + case ssl_handshake:master_secret(ssl:tls_version(Version), Session, ConnectionStates0, server) of {_, ConnectionStates1} -> State1 = State0#state{connection_states = ConnectionStates1, session = Session}, - State2 = + {State2, Actions} = finalize_handshake(State1, abbreviated, Connection), {Record, State} = Connection:next_record(State2), - Connection:next_event(abbreviated, Record, State); + Connection:next_event(abbreviated, Record, State, Actions); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, hello, State0) + handle_own_alert(Alert, Version, hello, State0) end. server_hello(ServerHello, State0, Connection) -> @@ -1180,7 +1330,7 @@ verify_client_cert(#state{client_certificate_requested = true, role = client, tls_handshake_history = Handshake0} = State, Connection) -> case ssl_handshake:client_certificate_verify(OwnCert, MasterSecret, - Version, HashSign, PrivateKey, Handshake0) of + ssl:tls_version(Version), HashSign, PrivateKey, Handshake0) of #certificate_verify{} = Verified -> Connection:queue_handshake(Verified, State); ignore -> @@ -1195,15 +1345,15 @@ client_certify_and_key_exchange(#state{negotiated_version = Version} = State0, Connection) -> try do_client_certify_and_key_exchange(State0, Connection) of State1 = #state{} -> - State2 = finalize_handshake(State1, certify, Connection), + {State2, Actions} = finalize_handshake(State1, certify, Connection), State3 = State2#state{ %% Reinitialize client_certificate_requested = false}, {Record, State} = Connection:next_record(State3), - Connection:next_event(cipher, Record, State) + Connection:next_event(cipher, Record, State, Actions) catch throw:#alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0) + handle_own_alert(Alert, Version, certify, State0) end. do_client_certify_and_key_exchange(State0, Connection) -> @@ -1217,8 +1367,25 @@ 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), + #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}, @@ -1294,12 +1461,11 @@ key_exchange(#state{role = server, key_algorithm = Algo, Algo == dhe_rsa; Algo == dh_anon -> DHKeys = public_key:generate_key(Params), - ConnectionState = + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {dh, DHKeys, Params, + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), {dh, DHKeys, Params, HashSignAlgo, ClientRandom, ServerRandom, PrivateKey}), @@ -1312,22 +1478,23 @@ key_exchange(#state{role = server, private_key = Key, key_algorithm = Algo} = St key_exchange(#state{role = server, key_algorithm = Algo, hashsign_algorithm = HashSignAlgo, private_key = PrivateKey, + session = #session{ecc = ECCCurve}, connection_states = ConnectionStates0, negotiated_version = Version } = State0, Connection) when Algo == ecdhe_ecdsa; Algo == ecdhe_rsa; Algo == ecdh_anon -> - ECDHKeys = public_key:generate_key(select_curve(State0)), - ConnectionState = + ECDHKeys = public_key:generate_key(ECCCurve), + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {ecdh, ECDHKeys, - HashSignAlgo, ClientRandom, - ServerRandom, - PrivateKey}), + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {ecdh, ECDHKeys, + HashSignAlgo, ClientRandom, + ServerRandom, + PrivateKey}), State = Connection:queue_handshake(Msg, State0), State#state{diffie_hellman_keys = ECDHKeys}; @@ -1341,14 +1508,14 @@ key_exchange(#state{role = server, key_algorithm = psk, connection_states = ConnectionStates0, negotiated_version = Version } = State0, Connection) -> - ConnectionState = + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {psk, PskIdentityHint, - HashSignAlgo, ClientRandom, - ServerRandom, + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {psk, PskIdentityHint, + HashSignAlgo, ClientRandom, + ServerRandom, PrivateKey}), Connection:queue_handshake(Msg, State0); @@ -1361,16 +1528,16 @@ key_exchange(#state{role = server, key_algorithm = dhe_psk, negotiated_version = Version } = State0, Connection) -> DHKeys = public_key:generate_key(Params), - ConnectionState = + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {dhe_psk, - PskIdentityHint, DHKeys, Params, - HashSignAlgo, ClientRandom, - ServerRandom, - PrivateKey}), + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {dhe_psk, + PskIdentityHint, DHKeys, Params, + HashSignAlgo, ClientRandom, + ServerRandom, + PrivateKey}), State = Connection:queue_handshake(Msg, State0), State#state{diffie_hellman_keys = DHKeys}; @@ -1384,15 +1551,15 @@ key_exchange(#state{role = server, key_algorithm = rsa_psk, connection_states = ConnectionStates0, negotiated_version = Version } = State0, Connection) -> - ConnectionState = + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {psk, PskIdentityHint, - HashSignAlgo, ClientRandom, - ServerRandom, - PrivateKey}), + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {psk, PskIdentityHint, + HashSignAlgo, ClientRandom, + ServerRandom, + PrivateKey}), Connection:queue_handshake(Msg, State0); key_exchange(#state{role = server, key_algorithm = Algo, @@ -1413,15 +1580,15 @@ key_exchange(#state{role = server, key_algorithm = Algo, Keys0 = {_,_} -> Keys0 end, - ConnectionState = + #{security_parameters := SecParams} = ssl_record:pending_connection_state(ConnectionStates0, read), - SecParams = ConnectionState#connection_state.security_parameters, #security_parameters{client_random = ClientRandom, server_random = ServerRandom} = SecParams, - Msg = ssl_handshake:key_exchange(server, Version, {srp, Keys, SrpParams, - HashSignAlgo, ClientRandom, - ServerRandom, - PrivateKey}), + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {srp, Keys, SrpParams, + HashSignAlgo, ClientRandom, + ServerRandom, + PrivateKey}), State = Connection:queue_handshake(Msg, State0), State#state{srp_params = SrpParams, srp_keys = Keys}; @@ -1431,7 +1598,7 @@ key_exchange(#state{role = client, public_key_info = PublicKeyInfo, negotiated_version = Version, premaster_secret = PremasterSecret} = State0, Connection) -> - Msg = rsa_key_exchange(Version, PremasterSecret, PublicKeyInfo), + Msg = rsa_key_exchange(ssl:tls_version(Version), PremasterSecret, PublicKeyInfo), Connection:queue_handshake(Msg, State0); key_exchange(#state{role = client, @@ -1442,7 +1609,7 @@ key_exchange(#state{role = client, when Algorithm == dhe_dss; Algorithm == dhe_rsa; Algorithm == dh_anon -> - Msg = ssl_handshake:key_exchange(client, Version, {dh, DhPubKey}), + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {dh, DhPubKey}), Connection:queue_handshake(Msg, State0); key_exchange(#state{role = client, @@ -1452,14 +1619,14 @@ key_exchange(#state{role = client, when Algorithm == ecdhe_ecdsa; Algorithm == ecdhe_rsa; Algorithm == ecdh_ecdsa; Algorithm == ecdh_rsa; Algorithm == ecdh_anon -> - Msg = ssl_handshake:key_exchange(client, Version, {ecdh, Keys}), + 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, negotiated_version = Version} = State0, Connection) -> - Msg = ssl_handshake:key_exchange(client, Version, + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {psk, SslOpts#ssl_options.psk_identity}), Connection:queue_handshake(Msg, State0); @@ -1468,7 +1635,7 @@ key_exchange(#state{role = client, key_algorithm = dhe_psk, negotiated_version = Version, diffie_hellman_keys = {DhPubKey, _}} = State0, Connection) -> - Msg = ssl_handshake:key_exchange(client, Version, + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {dhe_psk, SslOpts#ssl_options.psk_identity, DhPubKey}), Connection:queue_handshake(Msg, State0); @@ -1479,7 +1646,7 @@ key_exchange(#state{role = client, negotiated_version = Version, premaster_secret = PremasterSecret} = State0, Connection) -> - Msg = rsa_psk_key_exchange(Version, SslOpts#ssl_options.psk_identity, + Msg = rsa_psk_key_exchange(ssl:tls_version(Version), SslOpts#ssl_options.psk_identity, PremasterSecret, PublicKeyInfo), Connection:queue_handshake(Msg, State0); @@ -1491,7 +1658,7 @@ key_exchange(#state{role = client, when Algorithm == srp_dss; Algorithm == srp_rsa; Algorithm == srp_anon -> - Msg = ssl_handshake:key_exchange(client, Version, {srp, ClientPubKey}), + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {srp, ClientPubKey}), Connection:queue_handshake(Msg, State0). rsa_key_exchange(Version, PremasterSecret, PublicKeyInfo = {Algorithm, _, _}) @@ -1504,7 +1671,7 @@ rsa_key_exchange(Version, PremasterSecret, PublicKeyInfo = {Algorithm, _, _}) Algorithm == ?sha384WithRSAEncryption; Algorithm == ?sha512WithRSAEncryption -> - ssl_handshake:key_exchange(client, Version, + ssl_handshake:key_exchange(client, ssl:tls_version(Version), {premaster_secret, PremasterSecret, PublicKeyInfo}); rsa_key_exchange(_, _, _) -> @@ -1521,7 +1688,7 @@ rsa_psk_key_exchange(Version, PskIdentity, PremasterSecret, Algorithm == ?sha384WithRSAEncryption; Algorithm == ?sha512WithRSAEncryption -> - ssl_handshake:key_exchange(client, Version, + ssl_handshake:key_exchange(client, ssl:tls_version(Version), {psk_premaster_secret, PskIdentity, PremasterSecret, PublicKeyInfo}); rsa_psk_key_exchange(_, _, _, _) -> @@ -1533,12 +1700,14 @@ request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer, cert_db = CertDbHandle, cert_db_ref = CertDbRef, negotiated_version = Version} = State0, Connection) -> - #connection_state{security_parameters = - #security_parameters{cipher_suite = CipherSuite}} = + #{security_parameters := + #security_parameters{cipher_suite = CipherSuite}} = ssl_record:pending_connection_state(ConnectionStates0, read), - HashSigns = ssl_handshake:available_signature_algs(SupportedHashSigns, Version, [Version]), + TLSVersion = ssl:tls_version(Version), + HashSigns = ssl_handshake:available_signature_algs(SupportedHashSigns, + TLSVersion, [TLSVersion]), Msg = ssl_handshake:certificate_request(CipherSuite, CertDbHandle, CertDbRef, - HashSigns, Version), + HashSigns, TLSVersion), State = Connection:queue_handshake(Msg, State0), State#state{client_certificate_requested = true}; @@ -1551,7 +1720,7 @@ calculate_master_secret(PremasterSecret, connection_states = ConnectionStates0, session = Session0} = State0, Connection, _Current, Next) -> - case ssl_handshake:master_secret(record_cb(Connection), Version, PremasterSecret, + case ssl_handshake:master_secret(ssl:tls_version(Version), PremasterSecret, ConnectionStates0, server) of {MasterSecret, ConnectionStates} -> Session = Session0#session{master_secret = MasterSecret}, @@ -1560,7 +1729,7 @@ calculate_master_secret(PremasterSecret, {Record, State} = Connection:next_record(State1), Connection:next_event(Next, Record, State); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, certify, State0) + handle_own_alert(Alert, Version, certify, State0) end. finalize_handshake(State0, StateName, Connection) -> @@ -1593,7 +1762,7 @@ finished(#state{role = Role, negotiated_version = Version, connection_states = ConnectionStates0, tls_handshake_history = Handshake0} = State0, StateName, Connection) -> MasterSecret = Session#session.master_secret, - Finished = ssl_handshake:finished(Version, Role, + Finished = ssl_handshake:finished(ssl:tls_version(Version), Role, get_current_prf(ConnectionStates0, write), MasterSecret, Handshake0), ConnectionStates = save_verify_data(Role, Finished, ConnectionStates0, StateName), @@ -1620,12 +1789,13 @@ calculate_secret(#server_dh_params{dh_p = Prime, dh_g = Base, Connection, certify, certify); calculate_secret(#server_ecdh_params{curve = ECCurve, public = ECServerPubKey}, - State, Connection) -> + State=#state{session=Session}, Connection) -> ECDHKeys = public_key:generate_key(ECCurve), PremasterSecret = ssl_handshake:premaster_secret(#'ECPoint'{point = ECServerPubKey}, ECDHKeys), calculate_master_secret(PremasterSecret, - State#state{diffie_hellman_keys = ECDHKeys}, + State#state{diffie_hellman_keys = ECDHKeys, + session = Session#session{ecc = ECCurve}}, Connection, certify, certify); calculate_secret(#server_psk_params{ @@ -1658,7 +1828,7 @@ master_secret(#alert{} = Alert, _) -> master_secret(PremasterSecret, #state{session = Session, negotiated_version = Version, role = Role, connection_states = ConnectionStates0} = State) -> - case ssl_handshake:master_secret(tls_record, Version, PremasterSecret, + case ssl_handshake:master_secret(ssl:tls_version(Version), PremasterSecret, ConnectionStates0, Role) of {MasterSecret, ConnectionStates} -> State#state{ @@ -1719,16 +1889,11 @@ cipher_role(server, Data, Session, #state{connection_states = ConnectionStates0 Connection) -> ConnectionStates1 = ssl_record:set_client_verify_data(current_read, Data, ConnectionStates0), - State1 = + {State1, Actions} = finalize_handshake(State0#state{connection_states = ConnectionStates1, session = Session}, cipher, Connection), {Record, State} = prepare_connection(State1, Connection), - Connection:next_event(connection, Record, State). - -select_curve(#state{client_ecc = {[Curve|_], _}}) -> - {namedCurve, Curve}; -select_curve(_) -> - {namedCurve, ?secp256r1}. + Connection:next_event(connection, Record, State, Actions). is_anonymous(Algo) when Algo == dh_anon; Algo == ecdh_anon; @@ -1741,11 +1906,11 @@ is_anonymous(_) -> false. get_current_prf(CStates, Direction) -> - CS = ssl_record:current_connection_state(CStates, Direction), - CS#connection_state.security_parameters#security_parameters.prf_algorithm. + #{security_parameters := SecParams} = ssl_record:current_connection_state(CStates, Direction), + SecParams#security_parameters.prf_algorithm. get_pending_prf(CStates, Direction) -> - CS = ssl_record:pending_connection_state(CStates, Direction), - CS#connection_state.security_parameters#security_parameters.prf_algorithm. + #{security_parameters := SecParams} = ssl_record:pending_connection_state(CStates, Direction), + SecParams#security_parameters.prf_algorithm. opposite_role(client) -> server; @@ -1787,7 +1952,7 @@ get_socket_opts(Transport, Socket, [active | Tags], SockOpts, Acc) -> get_socket_opts(Transport, Socket, Tags, SockOpts, [{active, SockOpts#socket_options.active} | Acc]); get_socket_opts(Transport, Socket, [Tag | Tags], SockOpts, Acc) -> - try ssl_socket:getopts(Transport, Socket, [Tag]) of + try tls_socket:getopts(Transport, Socket, [Tag]) of {ok, [Opt]} -> get_socket_opts(Transport, Socket, Tags, SockOpts, [Opt | Acc]); {error, Error} -> @@ -1803,7 +1968,7 @@ set_socket_opts(_,_, [], SockOpts, []) -> {ok, SockOpts}; set_socket_opts(Transport, Socket, [], SockOpts, Other) -> %% Set non emulated options - try ssl_socket:setopts(Transport, Socket, Other) of + try tls_socket:setopts(Transport, Socket, Other) of ok -> {ok, SockOpts}; {error, InetError} -> @@ -1869,17 +2034,17 @@ hibernate_after(connection = StateName, hibernate_after(StateName, State, Actions) -> {next_state, StateName, State, Actions}. -terminate_alert(normal, Version, ConnectionStates) -> - ssl_alert:encode(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), +terminate_alert(normal, Version, ConnectionStates, Connection) -> + Connection:encode_alert(?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), +terminate_alert({Reason, _}, Version, ConnectionStates, Connection) when Reason == close; + Reason == shutdown -> + Connection:encode_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), Version, ConnectionStates); -terminate_alert(_, Version, ConnectionStates) -> - {BinAlert, _} = ssl_alert:encode(?ALERT_REC(?FATAL, ?INTERNAL_ERROR), - Version, ConnectionStates), +terminate_alert(_, Version, ConnectionStates, Connection) -> + {BinAlert, _} = Connection:encode_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR), + Version, ConnectionStates), BinAlert. handle_trusted_certs_db(#state{ssl_options = @@ -1967,7 +2132,7 @@ handle_resumed_session(SessId, #state{connection_states = ConnectionStates0, session_cache = Cache, session_cache_cb = CacheCb} = State0) -> Session = CacheCb:lookup(Cache, {{Host, Port}, SessId}), - case ssl_handshake:master_secret(tls_record, Version, Session, + case ssl_handshake:master_secret(ssl:tls_version(Version), Session, ConnectionStates0, client) of {_, ConnectionStates} -> {Record, State} = @@ -1976,7 +2141,7 @@ handle_resumed_session(SessId, #state{connection_states = ConnectionStates0, session = Session}), Connection:next_event(abbreviated, Record, State); #alert{} = Alert -> - Connection:handle_own_alert(Alert, Version, hello, State0) + handle_own_alert(Alert, Version, hello, State0) end. make_premaster_secret({MajVer, MinVer}, rsa) -> @@ -2043,7 +2208,7 @@ handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} = %% user_data_buffer =/= <<>> handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection} = State0) -> - case Connection:read_application_data(<<>>, State0) of + case read_application_data(<<>>, State0) of {stop, Reason, State} -> {stop, Reason, State}; {Record, State1} -> @@ -2057,3 +2222,277 @@ handle_active_option(_, StateName0, To, Reply, #state{protocol_cb = Connection} Stop end end. + +encode_packet(Data, #socket_options{packet=Packet}) -> + case Packet of + 1 -> encode_size_packet(Data, 8, (1 bsl 8) - 1); + 2 -> encode_size_packet(Data, 16, (1 bsl 16) - 1); + 4 -> encode_size_packet(Data, 32, (1 bsl 32) - 1); + _ -> Data + end. + +encode_size_packet(Bin, Size, Max) -> + Len = erlang:byte_size(Bin), + case Len > Max of + true -> throw({error, {badarg, {packet_to_large, Len, Max}}}); + false -> <<Len:Size, Bin/binary>> + end. + +time_to_renegotiate(_Data, + #{current_write := #{sequence_number := Num}}, + RenegotiateAt) -> + + %% We could do test: + %% is_time_to_renegotiate((erlang:byte_size(_Data) div ?MAX_PLAIN_TEXT_LENGTH) + 1, RenegotiateAt), + %% but we chose to have a some what lower renegotiateAt and a much cheaper test + is_time_to_renegotiate(Num, RenegotiateAt). + +is_time_to_renegotiate(N, M) when N < M-> + false; +is_time_to_renegotiate(_,_) -> + true. + + +%% Picks ClientData +get_data(_, _, <<>>) -> + {more, <<>>}; +%% Recv timed out save buffer data until next recv +get_data(#socket_options{active=false}, undefined, Buffer) -> + {passive, Buffer}; +get_data(#socket_options{active=Active, packet=Raw}, BytesToRead, Buffer) + when Raw =:= raw; Raw =:= 0 -> %% Raw Mode + if + Active =/= false orelse BytesToRead =:= 0 -> + %% Active true or once, or passive mode recv(0) + {ok, Buffer, <<>>}; + byte_size(Buffer) >= BytesToRead -> + %% Passive Mode, recv(Bytes) + <<Data:BytesToRead/binary, Rest/binary>> = Buffer, + {ok, Data, Rest}; + true -> + %% Passive Mode not enough data + {more, Buffer} + end; +get_data(#socket_options{packet=Type, packet_size=Size}, _, Buffer) -> + PacketOpts = [{packet_size, Size}], + case decode_packet(Type, Buffer, PacketOpts) of + {more, _} -> + {more, Buffer}; + Decoded -> + Decoded + end. + +decode_packet({http, headers}, Buffer, PacketOpts) -> + decode_packet(httph, Buffer, PacketOpts); +decode_packet({http_bin, headers}, Buffer, PacketOpts) -> + decode_packet(httph_bin, Buffer, PacketOpts); +decode_packet(Type, Buffer, PacketOpts) -> + erlang:decode_packet(Type, Buffer, PacketOpts). + +%% Just like with gen_tcp sockets, an ssl socket that has been configured with +%% {packet, http} (or {packet, http_bin}) will automatically switch to expect +%% HTTP headers after it sees a HTTP Request or HTTP Response line. We +%% represent the current state as follows: +%% #socket_options.packet =:= http: Expect a HTTP Request/Response line +%% #socket_options.packet =:= {http, headers}: Expect HTTP Headers +%% Note that if the user has explicitly configured the socket to expect +%% HTTP headers using the {packet, httph} option, we don't do any automatic +%% switching of states. +deliver_app_data(Transport, Socket, SOpts = #socket_options{active=Active, packet=Type}, + Data, Pid, From, Tracker, Connection) -> + send_or_reply(Active, Pid, From, format_reply(Transport, Socket, SOpts, Data, Tracker, Connection)), + SO = case Data of + {P, _, _, _} when ((P =:= http_request) or (P =:= http_response)), + ((Type =:= http) or (Type =:= http_bin)) -> + SOpts#socket_options{packet={Type, headers}}; + http_eoh when tuple_size(Type) =:= 2 -> + % End of headers - expect another Request/Response line + {Type1, headers} = Type, + SOpts#socket_options{packet=Type1}; + _ -> + SOpts + end, + case Active of + once -> + SO#socket_options{active=false}; + _ -> + SO + end. + +format_reply(_, _,#socket_options{active = false, mode = Mode, packet = Packet, + header = Header}, Data, _, _) -> + {ok, do_format_reply(Mode, Packet, Header, Data)}; +format_reply(Transport, Socket, #socket_options{active = _, mode = Mode, packet = Packet, + header = Header}, Data, Tracker, Connection) -> + {ssl, Connection:socket(self(), Transport, Socket, Connection, Tracker), + do_format_reply(Mode, Packet, Header, Data)}. + +deliver_packet_error(Transport, Socket, SO= #socket_options{active = Active}, Data, Pid, From, Tracker, Connection) -> + send_or_reply(Active, Pid, From, format_packet_error(Transport, Socket, SO, Data, Tracker, Connection)). + +format_packet_error(_, _,#socket_options{active = false, mode = Mode}, Data, _, _) -> + {error, {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}; +format_packet_error(Transport, Socket, #socket_options{active = _, mode = Mode}, Data, Tracker, Connection) -> + {ssl_error, Connection:socket(self(), Transport, Socket, Connection, Tracker), + {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}. + +do_format_reply(binary, _, N, Data) when N > 0 -> % Header mode + header(N, Data); +do_format_reply(binary, _, _, Data) -> + Data; +do_format_reply(list, Packet, _, Data) + when Packet == http; Packet == {http, headers}; + Packet == http_bin; Packet == {http_bin, headers}; + Packet == httph; Packet == httph_bin -> + Data; +do_format_reply(list, _,_, Data) -> + binary_to_list(Data). + +header(0, <<>>) -> + <<>>; +header(_, <<>>) -> + []; +header(0, Binary) -> + Binary; +header(N, Binary) -> + <<?BYTE(ByteN), NewBinary/binary>> = Binary, + [ByteN | header(N-1, NewBinary)]. + +send_or_reply(false, _Pid, From, Data) when From =/= undefined -> + gen_statem:reply(From, Data); +%% Can happen when handling own alert or tcp error/close and there is +%% no outstanding gen_fsm sync events +send_or_reply(false, no_pid, _, _) -> + ok; +send_or_reply(_, Pid, _From, Data) -> + send_user(Pid, Data). + +send_user(Pid, Msg) -> + Pid ! Msg. + +alert_user(Transport, Tracker, Socket, connection, Opts, Pid, From, Alert, Role, Connection) -> + alert_user(Transport, Tracker, Socket, Opts#socket_options.active, Pid, From, Alert, Role, Connection); +alert_user(Transport, Tracker, Socket,_, _, _, From, Alert, Role, Connection) -> + alert_user(Transport, Tracker, Socket, From, Alert, Role, Connection). + +alert_user(Transport, Tracker, Socket, From, Alert, Role, Connection) -> + alert_user(Transport, Tracker, Socket, false, no_pid, From, Alert, Role, Connection). + +alert_user(_, _, _, false = Active, Pid, From, Alert, Role, _) when From =/= undefined -> + %% If there is an outstanding ssl_accept | recv + %% From will be defined and send_or_reply will + %% send the appropriate error message. + ReasonCode = ssl_alert:reason_code(Alert, Role), + send_or_reply(Active, Pid, From, {error, ReasonCode}); +alert_user(Transport, Tracker, Socket, Active, Pid, From, Alert, Role, Connection) -> + case ssl_alert:reason_code(Alert, Role) of + closed -> + send_or_reply(Active, Pid, From, + {ssl_closed, Connection:socket(self(), + Transport, Socket, Connection, Tracker)}); + ReasonCode -> + send_or_reply(Active, Pid, From, + {ssl_error, Connection:socket(self(), + Transport, Socket, Connection, Tracker), ReasonCode}) + end. + +log_alert(true, Info, Alert) -> + Txt = ssl_alert:alert_txt(Alert), + error_logger:format("SSL: ~p: ~s\n", [Info, Txt]); +log_alert(false, _, _) -> + ok. + +handle_own_alert(Alert, Version, StateName, + #state{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, StateName, Alert), + 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) -> + ssl_manager:invalidate_session(Port, Session). + +handle_sni_extension(undefined, State) -> + State; +handle_sni_extension(#sni{hostname = Hostname}, State0) -> + NewOptions = update_ssl_options_from_sni(State0#state.ssl_options, Hostname), + case NewOptions of + undefined -> + State0; + _ -> + {ok, #{cert_db_ref := Ref, + cert_db_handle := CertDbHandle, + fileref_db_handle := FileRefHandle, + session_cache := CacheHandle, + crl_db_info := CRLDbHandle, + private_key := Key, + dh_params := DHParams, + own_certificate := OwnCert}} = + ssl_config:init(NewOptions, State0#state.role), + State0#state{ + session = State0#state.session#session{own_certificate = OwnCert}, + file_ref_db = FileRefHandle, + cert_db_ref = Ref, + cert_db = CertDbHandle, + crl_db = CRLDbHandle, + session_cache = CacheHandle, + private_key = Key, + diffie_hellman_params = DHParams, + ssl_options = NewOptions, + sni_hostname = Hostname + } + end. + +update_ssl_options_from_sni(OrigSSLOptions, SNIHostname) -> + SSLOption = + case OrigSSLOptions#ssl_options.sni_fun of + undefined -> + proplists:get_value(SNIHostname, + OrigSSLOptions#ssl_options.sni_hosts); + SNIFun -> + SNIFun(SNIHostname) + end, + case SSLOption of + undefined -> + undefined; + _ -> + ssl:handle_options(SSLOption, OrigSSLOptions) + end. + +new_emulated([], EmOpts) -> + EmOpts; +new_emulated(NewEmOpts, _) -> + NewEmOpts. |