diff options
Diffstat (limited to 'lib/ssl/src/ssl_connection.erl')
| -rw-r--r-- | lib/ssl/src/ssl_connection.erl | 561 |
1 files changed, 459 insertions, 102 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl index 64ecc29b97..064350e6de 100644 --- a/lib/ssl/src/ssl_connection.erl +++ b/lib/ssl/src/ssl_connection.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2017. All Rights Reserved. +%% Copyright Ericsson AB 2013-2018. 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. @@ -37,7 +37,9 @@ -include_lib("public_key/include/public_key.hrl"). %% Setup --export([connect/8, ssl_accept/7, handshake/2, handshake/3, + +-export([connect/8, handshake/7, handshake/2, handshake/3, + handshake_continue/3, handshake_cancel/1, socket_control/4, socket_control/5, start_or_recv_cancel_timer/2]). %% User Events @@ -49,7 +51,7 @@ %% Alert and close handling -export([handle_own_alert/4, handle_alert/3, - handle_normal_shutdown/3 + handle_normal_shutdown/3, stop/2, stop_and_reply/3 ]). %% Data handling @@ -57,15 +59,19 @@ %% Help functions for tls|dtls_connection.erl -export([handle_session/7, ssl_config/3, - prepare_connection/2, hibernate_after/3]). + prepare_connection/2, hibernate_after/3, map_extensions/1]). %% 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, error/4, hello/4, abbreviated/4, certify/4, cipher/4, connection/4, downgrade/4]). +-export([init/4, error/4, hello/4, user_hello/4, abbreviated/4, certify/4, cipher/4, + connection/4, death_row/4, downgrade/4]). %% gen_statem callbacks -export([terminate/3, format_status/2]). +%% Erlang Distribution export +-export([get_sslsocket/1, handshake_complete/3]). + %%==================================================================== %% Setup %%==================================================================== @@ -89,7 +95,7 @@ connect(Connection, Host, Port, Socket, Options, User, CbInfo, Timeout) -> {error, ssl_not_started} end. %%-------------------------------------------------------------------- --spec ssl_accept(tls_connection | dtls_connection, +-spec handshake(tls_connection | dtls_connection, inet:port_number(), port(), {#ssl_options{}, #socket_options{}, undefined | pid()}, pid(), tuple(), timeout()) -> @@ -98,7 +104,7 @@ connect(Connection, Host, Port, Socket, Options, User, CbInfo, Timeout) -> %% Description: Performs accept on an ssl listen socket. e.i. performs %% ssl handshake. %%-------------------------------------------------------------------- -ssl_accept(Connection, Port, Socket, Opts, User, CbInfo, Timeout) -> +handshake(Connection, Port, Socket, Opts, User, CbInfo, Timeout) -> try Connection:start_fsm(server, "localhost", Port, Socket, Opts, User, CbInfo, Timeout) catch @@ -107,32 +113,60 @@ ssl_accept(Connection, Port, Socket, Opts, User, CbInfo, Timeout) -> end. %%-------------------------------------------------------------------- --spec handshake(#sslsocket{}, timeout()) -> ok | {error, reason()}. +-spec handshake(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} | + {ok, #sslsocket{}, map()}| {error, reason()}. %% %% Description: Starts ssl handshake. %%-------------------------------------------------------------------- -handshake(#sslsocket{pid = Pid}, Timeout) -> +handshake(#sslsocket{pid = Pid} = Socket, Timeout) -> case call(Pid, {start, Timeout}) of connected -> - ok; + {ok, Socket}; + {ok, Ext} -> + {ok, Socket, Ext}; Error -> Error end. %%-------------------------------------------------------------------- -spec handshake(#sslsocket{}, {#ssl_options{},#socket_options{}}, - timeout()) -> ok | {error, reason()}. + timeout()) -> {ok, #sslsocket{}} | {error, reason()}. %% %% Description: Starts ssl handshake with some new options %%-------------------------------------------------------------------- -handshake(#sslsocket{pid = Pid}, SslOptions, Timeout) -> +handshake(#sslsocket{pid = Pid} = Socket, SslOptions, Timeout) -> case call(Pid, {start, SslOptions, Timeout}) of connected -> - ok; + {ok, Socket}; Error -> Error end. +%%-------------------------------------------------------------------- +-spec handshake_continue(#sslsocket{}, [ssl_option()], + timeout()) -> {ok, #sslsocket{}}| {error, reason()}. +%% +%% Description: Continues handshake with new options +%%-------------------------------------------------------------------- +handshake_continue(#sslsocket{pid = Pid} = Socket, SslOptions, Timeout) -> + case call(Pid, {handshake_continue, SslOptions, Timeout}) of + connected -> + {ok, Socket}; + Error -> + Error + end. +%%-------------------------------------------------------------------- +-spec handshake_cancel(#sslsocket{}) -> ok | {error, reason()}. +%% +%% Description: Cancels connection +%%-------------------------------------------------------------------- +handshake_cancel(#sslsocket{pid = Pid}) -> + case call(Pid, cancel) of + closed -> + ok; + Error -> + Error + end. %-------------------------------------------------------------------- -spec socket_control(tls_connection | dtls_connection, port(), pid(), atom()) -> {ok, #sslsocket{}} | {error, reason()}. @@ -146,8 +180,8 @@ 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, udp_listner) -> - %% dtls listner process must have the socket control +socket_control(Connection, Socket, Pid, Transport, udp_listener) -> + %% dtls listener process must have the socket control {ok, Connection:socket(Pid, Transport, Socket, Connection, undefined)}; socket_control(tls_connection = Connection, Socket, Pid, Transport, ListenTracker) -> @@ -272,6 +306,13 @@ peer_certificate(ConnectionPid) -> renegotiation(ConnectionPid) -> call(ConnectionPid, renegotiate). + +get_sslsocket(ConnectionPid) -> + call(ConnectionPid, get_sslsocket). + +handshake_complete(ConnectionPid, Node, DHandle) -> + call(ConnectionPid, {handshake_complete, Node, DHandle}). + %%-------------------------------------------------------------------- -spec prf(pid(), binary() | 'master_secret', binary(), [binary() | ssl:prf_random()], non_neg_integer()) -> @@ -305,7 +346,7 @@ handle_own_alert(Alert, Version, StateName, catch _:_ -> ok end, - {stop, {shutdown, own_alert}}. + stop({shutdown, own_alert}, State). handle_normal_shutdown(Alert, _, #state{socket = Socket, transport_cb = Transport, @@ -329,24 +370,24 @@ handle_alert(#alert{level = ?FATAL} = Alert, StateName, 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}) -> + role = Role, socket_options = Opts, tracker = Tracker} = State) -> 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}; + stop(normal, State); handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, StateName, State) -> handle_normal_shutdown(Alert, StateName, State), - {stop, {shutdown, peer_close}}; + stop({shutdown, peer_close}, State); 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}}; + stop({shutdown, peer_close}, State); handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName, #state{role = Role, @@ -371,7 +412,7 @@ handle_alert(#alert{level = ?WARNING} = Alert, StateName, %%==================================================================== %% Data handling %%==================================================================== -write_application_data(Data0, From, +write_application_data(Data0, {FromPid, _} = From, #state{socket = Socket, negotiated_version = Version, protocol_cb = Connection, @@ -386,10 +427,19 @@ write_application_data(Data0, From, 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}]) + {Msgs, ConnectionStates} = + Connection:encode_data(Data, Version, ConnectionStates0), + NewState = State#state{connection_states = ConnectionStates}, + case Connection:send(Transport, Socket, Msgs) of + ok when FromPid =:= self() -> + hibernate_after(connection, NewState, []); + Error when FromPid =:= self() -> + stop({shutdown, Error}, NewState); + ok -> + hibernate_after(connection, NewState, [{reply, From, ok}]); + Result -> + hibernate_after(connection, NewState, [{reply, From, Result}]) + end end. read_application_data(Data, #state{user_application = {_Mon, Pid}, @@ -409,30 +459,57 @@ read_application_data(Data, #state{user_application = {_Mon, Pid}, 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; + case State0 of + #state{ + ssl_options = #ssl_options{erl_dist = true}, + protocol_specific = #{d_handle := DHandle}} -> + State = + State0#state{ + user_data_buffer = Buffer, + bytes_to_read = undefined}, + try erlang:dist_ctrl_put_data(DHandle, ClientData) of + _ + when SOpts#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); + _ -> %% We have more data + read_application_data(<<>>, State) + catch error:_ -> + death_row(State, disconnect) + end; + _ -> + 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 + 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} + stop(normal, State0) end. %%==================================================================== %% Help functions for tls|dtls_connection.erl @@ -480,6 +557,9 @@ handle_session(#server_hello{cipher_suite = CipherSuite, -spec ssl_config(#ssl_options{}, client | server, #state{}) -> #state{}. %%-------------------------------------------------------------------- ssl_config(Opts, Role, State) -> + ssl_config(Opts, Role, State, new). + +ssl_config(Opts, Role, State0, Type) -> {ok, #{cert_db_ref := Ref, cert_db_handle := CertDbHandle, fileref_db_handle := FileRefHandle, @@ -489,20 +569,26 @@ ssl_config(Opts, Role, State) -> dh_params := DHParams, own_certificate := OwnCert}} = ssl_config:init(Opts, Role), - Handshake = ssl_handshake:init_handshake_history(), TimeStamp = erlang:monotonic_time(), - Session = State#state.session, - State#state{tls_handshake_history = Handshake, - session = Session#session{own_certificate = OwnCert, - time_stamp = TimeStamp}, - 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 = Opts}. + Session = State0#state.session, + State = State0#state{session = Session#session{own_certificate = OwnCert, + time_stamp = TimeStamp}, + 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 = Opts}, + case Type of + new -> + Handshake = ssl_handshake:init_handshake_history(), + State#state{tls_handshake_history = Handshake}; + continue -> + State + end. + %%==================================================================== %% gen_statem general state functions with connection cb argument @@ -524,11 +610,18 @@ init({call, From}, {start, {Opts, EmOpts}, Timeout}, socket_options = SockOpts} = State0, Connection) -> try SslOpts = ssl:handle_options(Opts, OrigSSLOptions), + case SslOpts of + #ssl_options{erl_dist = true} -> + process_flag(priority, max); + _ -> + ok + end, State = ssl_config(SslOpts, Role, State0), init({call, From}, {start, Timeout}, - State#state{ssl_options = SslOpts, socket_options = new_emulated(EmOpts, SockOpts)}, Connection) + State#state{ssl_options = SslOpts, + socket_options = new_emulated(EmOpts, SockOpts)}, Connection) catch throw:Error -> - {stop_and_reply, normal, {reply, From, {error, Error}}} + stop_and_reply(normal, {reply, From, {error, Error}}, State0) end; init({call, From}, Msg, State, Connection) -> handle_call(Msg, From, ?FUNCTION_NAME, State, Connection); @@ -541,8 +634,8 @@ init(_Type, _Event, _State, _Connection) -> tls_connection | dtls_connection) -> gen_statem:state_function_result(). %%-------------------------------------------------------------------- -error({call, From}, Msg, State, Connection) -> - handle_call(Msg, From, ?FUNCTION_NAME, State, Connection). +error({call, From}, _Msg, State, _Connection) -> + {next_state, ?FUNCTION_NAME, State, [{reply, From, {error, closed}}]}. %%-------------------------------------------------------------------- -spec hello(gen_statem:event_type(), @@ -559,6 +652,23 @@ hello(info, Msg, State, _) -> hello(Type, Msg, State, Connection) -> handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection). +user_hello({call, From}, cancel, #state{negotiated_version = Version} = State, _) -> + gen_statem:reply(From, ok), + handle_own_alert(?ALERT_REC(?FATAL, ?USER_CANCELED, user_canceled), + Version, ?FUNCTION_NAME, State); +user_hello({call, From}, {handshake_continue, NewOptions, Timeout}, #state{hello = Hello, + role = Role, + start_or_recv_from = RecvFrom, + ssl_options = Options0} = State0, _Connection) -> + Timer = start_or_recv_cancel_timer(Timeout, RecvFrom), + Options = ssl:handle_options(NewOptions, Options0#ssl_options{handshake = full}), + State = ssl_config(Options, Role, State0, continue), + {next_state, hello, State#state{start_or_recv_from = From, + timer = Timer}, + [{next_event, internal, Hello}]}; +user_hello(_, _, _, _) -> + {keep_state_and_data, [postpone]}. + %%-------------------------------------------------------------------- -spec abbreviated(gen_statem:event_type(), #hello_request{} | #finished{} | term(), @@ -681,11 +791,12 @@ certify(internal, #server_key_exchange{exchange_keys = Keys}, #state{role = client, negotiated_version = Version, key_algorithm = Alg, public_key_info = PubKeyInfo, + session = Session, connection_states = ConnectionStates} = State, Connection) when Alg == dhe_dss; Alg == dhe_rsa; Alg == ecdhe_rsa; Alg == ecdhe_ecdsa; Alg == dh_anon; Alg == ecdh_anon; - Alg == psk; Alg == dhe_psk; Alg == rsa_psk; + Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk; Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon -> Params = ssl_handshake:decode_server_key(Keys, Alg, ssl:tls_version(Version)), @@ -702,7 +813,8 @@ certify(internal, #server_key_exchange{exchange_keys = Keys}, ConnectionStates, ssl:tls_version(Version), PubKeyInfo) of true -> calculate_secret(Params#server_key_params.params, - State#state{hashsign_algorithm = HashSign}, + State#state{hashsign_algorithm = HashSign, + session = session_handle_params(Params#server_key_params.params, Session)}, Connection); false -> handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR), @@ -911,7 +1023,7 @@ cipher(Type, Msg, State, Connection) -> #state{}, tls_connection | dtls_connection) -> gen_statem:state_function_result(). %%-------------------------------------------------------------------- -connection({call, From}, {application_data, Data}, +connection({call, {FromPid, _} = From}, {application_data, Data}, #state{protocol_cb = Connection} = State, Connection) -> %% We should look into having a worker process to do this to %% parallize send and receive decoding and not block the receiver @@ -919,7 +1031,13 @@ connection({call, From}, {application_data, Data}, try write_application_data(Data, From, State) catch throw:Error -> - hibernate_after(?FUNCTION_NAME, State, [{reply, From, Error}]) + case self() of + FromPid -> + stop({shutdown, Error}, State); + _ -> + hibernate_after( + ?FUNCTION_NAME, State, [{reply, From, Error}]) + end end; connection({call, RecvFrom}, {recv, N, Timeout}, #state{protocol_cb = Connection, socket_options = @@ -947,8 +1065,64 @@ connection({call, From}, negotiated_protocol, #state{negotiated_protocol = SelectedProtocol} = State, _) -> hibernate_after(?FUNCTION_NAME, State, [{reply, From, {ok, SelectedProtocol}}]); +connection( + {call, From}, {handshake_complete, _Node, DHandle}, + #state{ + ssl_options = #ssl_options{erl_dist = true}, + socket_options = SockOpts, + protocol_specific = ProtocolSpecific} = State, + Connection) -> + %% From now on we execute on normal priority + process_flag(priority, normal), + try erlang:dist_ctrl_get_data_notification(DHandle) of + _ -> + NewState = + State#state{ + socket_options = + SockOpts#socket_options{active = true}, + protocol_specific = + ProtocolSpecific#{d_handle => DHandle}}, + {Record, NewerState} = Connection:next_record_if_active(NewState), + Connection:next_event(connection, Record, NewerState, [{reply, From, ok}]) + catch error:_ -> + death_row(State, disconnect) + end; connection({call, From}, Msg, State, Connection) -> handle_call(Msg, From, ?FUNCTION_NAME, State, Connection); +connection( + info, dist_data = Msg, + #state{ + ssl_options = #ssl_options{erl_dist = true}, + protocol_specific = #{d_handle := DHandle}} = State, + _) -> + eat_msgs(Msg), + try send_dist_data(?FUNCTION_NAME, State, DHandle, []) + catch error:_ -> + death_row(State, disconnect) + end; +connection( + info, {send, From, Ref, Data}, + #state{ + ssl_options = #ssl_options{erl_dist = true}, + protocol_specific = #{d_handle := _}}, + _) -> + %% This is for testing only! + %% + %% Needed by some OTP distribution + %% test suites... + From ! {Ref, ok}, + {keep_state_and_data, + [{next_event, {call, {self(), undefined}}, + {application_data, iolist_to_binary(Data)}}]}; +connection( + info, tick = Msg, + #state{ + ssl_options = #ssl_options{erl_dist = true}, + protocol_specific = #{d_handle := _}}, + _) -> + eat_msgs(Msg), + {keep_state_and_data, + [{next_event, {call, {self(), undefined}}, {application_data, <<>>}}]}; connection(info, Msg, State, _) -> handle_info(Msg, ?FUNCTION_NAME, State); connection(internal, {recv, _}, State, Connection) -> @@ -957,6 +1131,32 @@ connection(Type, Msg, State, Connection) -> handle_common_event(Type, Msg, ?FUNCTION_NAME, State, Connection). %%-------------------------------------------------------------------- +-spec death_row(gen_statem:event_type(), term(), + #state{}, tls_connection | dtls_connection) -> + gen_statem:state_function_result(). +%%-------------------------------------------------------------------- +%% We just wait for the owner to die which triggers the monitor, +%% or the socket may die too +death_row( + info, {'DOWN', MonitorRef, _, _, Reason}, + #state{user_application={MonitorRef,_Pid}}, + _) -> + {stop, {shutdown, Reason}}; +death_row( + info, {'EXIT', Socket, Reason}, #state{socket = Socket}, _) -> + {stop, {shutdown, Reason}}; +death_row(state_timeout, Reason, _State, _Connection) -> + {stop, {shutdown,Reason}}; +death_row(_Type, _Msg, _State, _Connection) -> + %% Waste all other events + keep_state_and_data. + +%% State entry function +death_row(State, Reason) -> + {next_state, death_row, State, + [{state_timeout, 5000, Reason}]}. + +%%-------------------------------------------------------------------- -spec downgrade(gen_statem:event_type(), term(), #state{}, tls_connection | dtls_connection) -> gen_statem:state_function_result(). @@ -967,10 +1167,10 @@ downgrade(internal, #alert{description = ?CLOSE_NOTIFY}, 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}; + stop(normal, State); downgrade(timeout, downgrade, #state{downgrade = {_, From}} = State, _) -> gen_statem:reply(From, {error, timeout}), - {stop, normal, State}; + stop(normal, State); downgrade(Type, Event, State, Connection) -> handle_common_event(Type, Event, ?FUNCTION_NAME, State, Connection). @@ -985,9 +1185,8 @@ handle_common_event(internal, {handshake, {#hello_request{} = Handshake, _}}, co handle_common_event(internal, {handshake, {#hello_request{}, _}}, StateName, #state{role = client}, _) when StateName =/= connection -> {keep_state_and_data}; -handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName, - #state{tls_handshake_history = Hs0, - ssl_options = #ssl_options{v2_hello_compatible = V2HComp}} = State0, +handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName, + #state{tls_handshake_history = Hs0} = State0, Connection) -> PossibleSNI = Connection:select_sni_extension(Handshake), @@ -995,7 +1194,7 @@ handle_common_event(internal, {handshake, {Handshake, Raw}}, StateName, %% a client_hello, which needs to be determined by the connection callback. %% In other cases this is a noop State = handle_sni_extension(PossibleSNI, State0), - HsHist = ssl_handshake:update_handshake_history(Hs0, iolist_to_binary(Raw), V2HComp), + HsHist = ssl_handshake:update_handshake_history(Hs0, iolist_to_binary(Raw)), {next_state, StateName, State#state{tls_handshake_history = HsHist}, [{next_event, internal, Handshake}]}; handle_common_event(internal, {protocol_record, TLSorDTLSRecord}, StateName, State, Connection) -> @@ -1004,8 +1203,8 @@ handle_common_event(timeout, hibernate, _, _, _) -> {keep_state_and_data, [hibernate]}; handle_common_event(internal, {application_data, Data}, StateName, State0, Connection) -> case read_application_data(Data, State0) of - {stop, Reason, State} -> - {stop, Reason, State}; + {stop, _, _} = Stop-> + Stop; {Record, State} -> Connection:next_event(StateName, Record, State) end; @@ -1034,13 +1233,14 @@ handle_call({close, _} = Close, From, StateName, State, Connection) -> %% Run terminate before returning so that the reuseaddr %% inet-option works properly Result = Connection:terminate(Close, StateName, State#state{terminated = true}), - {stop_and_reply, {shutdown, normal}, - {reply, From, Result}, State}; + 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}, Connection) -> + socket = Socket} = State, Connection) -> case How0 of How when How == write; How == both -> Alert = ?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), @@ -1056,7 +1256,7 @@ handle_call({shutdown, How0}, From, _, {keep_state_and_data, [{reply, From, ok}]}; Error -> gen_statem:reply(From, {error, Error}), - {stop, normal} + stop(normal, State) end; handle_call({recv, _N, _Timeout}, From, _, #state{socket_options = @@ -1091,6 +1291,15 @@ handle_call({set_opts, Opts0}, From, StateName, handle_call(renegotiate, From, StateName, _, _) when StateName =/= connection -> {keep_state_and_data, [{reply, From, {error, already_renegotiating}}]}; + +handle_call( + get_sslsocket, From, _StateName, + #state{transport_cb = Transport, socket = Socket, tracker = Tracker}, + Connection) -> + SslSocket = + Connection:socket(self(), Transport, Socket, Connection, Tracker), + {keep_state_and_data, [{reply, From, SslSocket}]}; + handle_call({prf, Secret, Label, Seed, WantedLength}, From, _, #state{connection_states = ConnectionStates, negotiated_version = Version}, _) -> @@ -1127,29 +1336,50 @@ handle_info({ErrorTag, Socket, econnaborted}, StateName, tracker = Tracker} = State) when StateName =/= connection -> alert_user(Transport, Tracker,Socket, StartFrom, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role, Connection), - {stop, normal, State}; + 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), + error_logger:error_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}; + stop(normal, State); + +handle_info( + {'DOWN', MonitorRef, _, _, Reason}, _, + #state{ + user_application = {MonitorRef, _Pid}, + ssl_options = #ssl_options{erl_dist = true}}) -> + {stop, {shutdown, Reason}}; +handle_info( + {'DOWN', MonitorRef, _, _, _}, _, + #state{user_application = {MonitorRef, _Pid}}) -> + {stop, normal}; +handle_info( + {'EXIT', Pid, _Reason}, StateName, + #state{user_application = {_MonitorRef, Pid}} = State) -> + %% It seems the user application has linked to us + %% - ignore that and let the monitor handle this + {next_state, StateName, State}; + %%% So that terminate will be run when supervisor issues shutdown handle_info({'EXIT', _Sup, shutdown}, _StateName, State) -> - {stop, shutdown, State}; + stop(shutdown, State); handle_info({'EXIT', Socket, normal}, _StateName, #state{socket = Socket} = State) -> %% Handle as transport close" - {stop, {shutdown, transport_closed}, State}; + stop({shutdown, transport_closed}, State); +handle_info({'EXIT', Socket, Reason}, _StateName, #state{socket = Socket} = State) -> + stop({shutdown, Reason}, State); + handle_info(allow_renegotiate, StateName, State) -> {next_state, StateName, State#state{allow_renegotiate = true}}; 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}}; + 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, @@ -1244,7 +1474,7 @@ connection_info(#state{sni_hostname = SNIHostname, RecordCB = record_cb(Connection), CipherSuiteDef = #{key_exchange := KexAlg} = ssl_cipher:suite_definition(CipherSuite), IsNamedCurveSuite = lists:member(KexAlg, - [ecdh_ecdsa, ecdhe_ecdsa, ecdh_anon]), + [ecdh_ecdsa, ecdhe_ecdsa, ecdh_rsa, ecdhe_rsa, ecdh_anon]), CurveInfo = case ECCCurve of {namedCurve, Curve} when IsNamedCurveSuite -> [{ecc, {named_curve, pubkey_cert_records:namedCurves(Curve)}}]; @@ -1254,6 +1484,7 @@ connection_info(#state{sni_hostname = SNIHostname, [{protocol, RecordCB:protocol_version(Version)}, {session_id, SessionId}, {cipher_suite, ssl_cipher:erl_suite_definition(CipherSuiteDef)}, + {selected_cipher_suite, CipherSuiteDef}, {sni_hostname, SNIHostname} | CurveInfo] ++ ssl_options_list(Opts). security_info(#state{connection_states = ConnectionStates}) -> @@ -1344,11 +1575,12 @@ handle_peer_cert(Role, PeerCert, PublicKeyInfo, handle_peer_cert_key(client, _, {?'id-ecPublicKey', #'ECPoint'{point = _ECPoint} = PublicKey, PublicKeyParams}, - KeyAlg, State) when KeyAlg == ecdh_rsa; - KeyAlg == ecdh_ecdsa -> + KeyAlg, #state{session = Session} = State) when KeyAlg == ecdh_rsa; + KeyAlg == ecdh_ecdsa -> ECDHKey = public_key:generate_key(PublicKeyParams), PremasterSecret = ssl_handshake:premaster_secret(PublicKey, ECDHKey), - master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey}); + master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey, + session = Session#session{ecc = PublicKeyParams}}); %% 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. @@ -1463,6 +1695,14 @@ certify_client_key_exchange(#client_dhe_psk_identity{} = ClientKey, PremasterSecret = ssl_handshake:premaster_secret(ClientKey, ServerDhPrivateKey, Params, PSKLookup), calculate_master_secret(PremasterSecret, State0, Connection, certify, cipher); +certify_client_key_exchange(#client_ecdhe_psk_identity{} = ClientKey, + #state{diffie_hellman_keys = ServerEcDhPrivateKey, + ssl_options = + #ssl_options{user_lookup_fun = PSKLookup}} = State, + Connection) -> + PremasterSecret = + ssl_handshake:premaster_secret(ClientKey, ServerEcDhPrivateKey, PSKLookup), + calculate_master_secret(PremasterSecret, State, Connection, certify, cipher); certify_client_key_exchange(#client_rsa_psk_identity{} = ClientKey, #state{private_key = Key, ssl_options = @@ -1481,6 +1721,7 @@ certify_server(#state{key_algorithm = Algo} = State, _) when Algo == dh_anon; Algo == ecdh_anon; Algo == psk; Algo == dhe_psk; + Algo == ecdhe_psk; Algo == srp_anon -> State; certify_server(#state{cert_db = CertDbHandle, @@ -1516,9 +1757,11 @@ 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, _) +key_exchange(#state{role = server, private_key = #'ECPrivateKey'{parameters = ECCurve} = Key, key_algorithm = Algo, + session = Session} = State, _) when Algo == ecdh_ecdsa; Algo == ecdh_rsa -> - State#state{diffie_hellman_keys = Key}; + State#state{diffie_hellman_keys = Key, + session = Session#session{ecc = ECCurve}}; key_exchange(#state{role = server, key_algorithm = Algo, hashsign_algorithm = HashSignAlgo, private_key = PrivateKey, @@ -1582,6 +1825,27 @@ 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 = ecdhe_psk, + ssl_options = #ssl_options{psk_identity = PskIdentityHint}, + hashsign_algorithm = HashSignAlgo, + private_key = PrivateKey, + session = #session{ecc = ECCCurve}, + connection_states = ConnectionStates0, + negotiated_version = Version + } = State0, Connection) -> + ECDHKeys = public_key:generate_key(ECCCurve), + #{security_parameters := SecParams} = + ssl_record:pending_connection_state(ConnectionStates0, read), + #security_parameters{client_random = ClientRandom, + server_random = ServerRandom} = SecParams, + Msg = ssl_handshake:key_exchange(server, ssl:tls_version(Version), + {ecdhe_psk, + PskIdentityHint, ECDHKeys, + HashSignAlgo, ClientRandom, + ServerRandom, + PrivateKey}), + State = Connection:queue_handshake(Msg, State0), + State#state{diffie_hellman_keys = ECDHKeys}; key_exchange(#state{role = server, key_algorithm = rsa_psk, ssl_options = #ssl_options{psk_identity = undefined}} = State, _) -> State; @@ -1653,12 +1917,13 @@ key_exchange(#state{role = client, key_exchange(#state{role = client, key_algorithm = Algorithm, negotiated_version = Version, - diffie_hellman_keys = Keys} = State0, Connection) + session = Session, + diffie_hellman_keys = #'ECPrivateKey'{parameters = ECCurve} = Key} = State0, Connection) when Algorithm == ecdhe_ecdsa; Algorithm == ecdhe_rsa; Algorithm == ecdh_ecdsa; Algorithm == ecdh_rsa; Algorithm == ecdh_anon -> - Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Keys}), - Connection:queue_handshake(Msg, State0); + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Key}), + Connection:queue_handshake(Msg, State0#state{session = Session#session{ecc = ECCurve}}); key_exchange(#state{role = client, ssl_options = SslOpts, key_algorithm = psk, @@ -1675,6 +1940,17 @@ key_exchange(#state{role = client, {dhe_psk, SslOpts#ssl_options.psk_identity, DhPubKey}), Connection:queue_handshake(Msg, State0); + +key_exchange(#state{role = client, + ssl_options = SslOpts, + key_algorithm = ecdhe_psk, + negotiated_version = Version, + diffie_hellman_keys = ECDHKeys} = State0, Connection) -> + Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), + {ecdhe_psk, + SslOpts#ssl_options.psk_identity, ECDHKeys}), + Connection:queue_handshake(Msg, State0); + key_exchange(#state{role = client, ssl_options = SslOpts, key_algorithm = rsa_psk, @@ -1729,6 +2005,12 @@ rsa_psk_key_exchange(Version, PskIdentity, PremasterSecret, rsa_psk_key_exchange(_, _, _, _) -> throw (?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE, pub_key_is_not_rsa)). +request_client_cert(#state{key_algorithm = Alg} = State, _) + when Alg == dh_anon; Alg == ecdh_anon; + Alg == psk; Alg == dhe_psk; Alg == ecdhe_psk; Alg == rsa_psk; + Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon -> + State; + request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer, signature_algs = SupportedHashSigns}, connection_states = ConnectionStates0, @@ -1850,6 +2132,18 @@ calculate_secret(#server_dhe_psk_params{ calculate_master_secret(PremasterSecret, State#state{diffie_hellman_keys = Keys}, Connection, certify, certify); +calculate_secret(#server_ecdhe_psk_params{ + dh_params = #server_ecdh_params{curve = ECCurve}} = ServerKey, + #state{ssl_options = #ssl_options{user_lookup_fun = PSKLookup}} = + State=#state{session=Session}, Connection) -> + ECDHKeys = public_key:generate_key(ECCurve), + + PremasterSecret = ssl_handshake:premaster_secret(ServerKey, ECDHKeys, PSKLookup), + calculate_master_secret(PremasterSecret, + State#state{diffie_hellman_keys = ECDHKeys, + session = Session#session{ecc = ECCurve}}, + Connection, certify, certify); + calculate_secret(#server_srp_params{srp_n = Prime, srp_g = Generator} = ServerKey, #state{ssl_options = #ssl_options{srp_identity = SRPId}} = State, Connection) -> @@ -1934,6 +2228,7 @@ is_anonymous(Algo) when Algo == dh_anon; Algo == ecdh_anon; Algo == psk; Algo == dhe_psk; + Algo == ecdhe_psk; Algo == rsa_psk; Algo == srp_anon -> true; @@ -2062,7 +2357,24 @@ hibernate_after(connection = StateName, {next_state, StateName, State, [{timeout, HibernateAfter, hibernate} | Actions]}; hibernate_after(StateName, State, Actions) -> {next_state, StateName, State, Actions}. - + +map_extensions(#hello_extensions{renegotiation_info = RenegotiationInfo, + signature_algs = SigAlg, + alpn = Alpn, + next_protocol_negotiation = Next, + srp = SRP, + ec_point_formats = ECPointFmt, + elliptic_curves = ECCCurves, + sni = SNI}) -> + #{renegotiation_info => ssl_handshake:extension_value(RenegotiationInfo), + signature_algs => ssl_handshake:extension_value(SigAlg), + alpn => ssl_handshake:extension_value(Alpn), + srp => ssl_handshake:extension_value(SRP), + next_protocol => ssl_handshake:extension_value(Next), + ec_point_formats => ssl_handshake:extension_value(ECPointFmt), + elliptic_curves => ssl_handshake:extension_value(ECCCurves), + sni => ssl_handshake:extension_value(SNI)}. + terminate_alert(normal, Version, ConnectionStates, Connection) -> Connection:encode_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), Version, ConnectionStates); @@ -2134,6 +2446,11 @@ cancel_timer(Timer) -> erlang:cancel_timer(Timer), ok. +session_handle_params(#server_ecdh_params{curve = ECCurve}, Session) -> + Session#session{ecc = ECCurve}; +session_handle_params(_, Session) -> + Session. + register_session(client, Host, Port, #session{is_resumable = new} = Session0) -> Session = Session0#session{is_resumable = true}, ssl_manager:register_session(Host, Port, Session), @@ -2214,7 +2531,7 @@ ssl_options_list([ciphers = Key | Keys], [Value | Values], Acc) -> ssl_options_list(Keys, Values, [{Key, lists:map( fun(Suite) -> - ssl_cipher:erl_suite_definition(Suite) + ssl_cipher:suite_definition(Suite) end, Value)} | Acc]); ssl_options_list([Key | Keys], [Value | Values], Acc) -> @@ -2233,8 +2550,8 @@ handle_active_option(_, connection = StateName0, To, Reply, #state{protocol_cb = hibernate_after(StateName, State, [{reply, To, Reply}]); {next_state, StateName, State, Actions} -> hibernate_after(StateName, State, [{reply, To, Reply} | Actions]); - {stop, Reason, State} -> - {stop, Reason, State} + {stop, _, _} = Stop -> + Stop end; handle_active_option(_, StateName, To, Reply, #state{user_data_buffer = <<>>} = State) -> %% Active once already set @@ -2243,8 +2560,8 @@ 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 read_application_data(<<>>, State0) of - {stop, Reason, State} -> - {stop, Reason, State}; + {stop, _, _} = Stop -> + Stop; {Record, State1} -> %% Note: Renogotiation may cause StateName0 =/= StateName case Connection:next_event(StateName0, Record, State1) of @@ -2402,7 +2719,8 @@ send_or_reply(_, Pid, _From, Data) -> send_user(Pid, Data). send_user(Pid, Msg) -> - Pid ! Msg. + Pid ! Msg, + ok. 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); @@ -2495,3 +2813,42 @@ new_emulated([], EmOpts) -> EmOpts; new_emulated(NewEmOpts, _) -> NewEmOpts. +%%---------------Erlang distribution -------------------------------------- + +send_dist_data(StateName, State, DHandle, Acc) -> + case erlang:dist_ctrl_get_data(DHandle) of + none -> + erlang:dist_ctrl_get_data_notification(DHandle), + hibernate_after(StateName, State, lists:reverse(Acc)); + Data -> + send_dist_data( + StateName, State, DHandle, + [{next_event, {call, {self(), undefined}}, {application_data, Data}} + |Acc]) + end. + +%% Overload mitigation +eat_msgs(Msg) -> + receive Msg -> eat_msgs(Msg) + after 0 -> ok + end. + +%% When acting as distribution controller map the exit reason +%% to follow the documented nodedown_reason for net_kernel +stop(Reason, State) -> + {stop, erl_dist_stop_reason(Reason, State), State}. + +stop_and_reply(Reason, Replies, State) -> + {stop_and_reply, erl_dist_stop_reason(Reason, State), Replies, State}. + +erl_dist_stop_reason( + Reason, #state{ssl_options = #ssl_options{erl_dist = true}}) -> + case Reason of + normal -> + %% We can not exit with normal since that will not bring + %% down the rest of the distribution processes + {shutdown, normal}; + _ -> Reason + end; +erl_dist_stop_reason(Reason, _State) -> + Reason. |