diff options
Diffstat (limited to 'lib/ssl/src/tls_connection.erl')
| -rw-r--r-- | lib/ssl/src/tls_connection.erl | 156 |
1 files changed, 72 insertions, 84 deletions
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl index ffa04ee8ba..26de51985a 100644 --- a/lib/ssl/src/tls_connection.erl +++ b/lib/ssl/src/tls_connection.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2007-2013. All Rights Reserved. +%% Copyright Ericsson AB 2007-2014. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -53,7 +53,7 @@ %% Alert and close handling -export([send_alert/2, handle_own_alert/4, handle_close_alert/3, handle_normal_shutdown/3, handle_unexpected_message/3, - workaround_transport_delivery_problems/2, alert_user/5, alert_user/8 + workaround_transport_delivery_problems/2, alert_user/6, alert_user/9 ]). %% Data handling @@ -66,18 +66,18 @@ %% gen_fsm callbacks -export([init/1, hello/2, certify/2, cipher/2, abbreviated/2, connection/2, handle_event/3, - handle_sync_event/4, handle_info/3, terminate/3, code_change/4]). + handle_sync_event/4, handle_info/3, terminate/3, code_change/4, format_status/2]). %%==================================================================== %% Internal application API %%==================================================================== -start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_} = Opts, +start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker} = Opts, User, {CbModule, _,_, _} = CbInfo, Timeout) -> try {ok, Pid} = tls_connection_sup:start_child([Role, Host, Port, Socket, Opts, User, CbInfo]), - {ok, SslSocket} = ssl_connection:socket_control(?MODULE, Socket, Pid, CbModule), + {ok, SslSocket} = ssl_connection:socket_control(?MODULE, Socket, Pid, CbModule, Tracker), ok = ssl_connection:handshake(SslSocket, Timeout), {ok, SslSocket} catch @@ -85,13 +85,13 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_} = Opts, Error end; -start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = true},_} = Opts, +start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = true},_, Tracker} = Opts, User, {CbModule, _,_, _} = CbInfo, Timeout) -> try {ok, Pid} = tls_connection_sup:start_child_dist([Role, Host, Port, Socket, Opts, User, CbInfo]), - {ok, SslSocket} = ssl_connection:socket_control(?MODULE, Socket, Pid, CbModule), + {ok, SslSocket} = ssl_connection:socket_control(?MODULE, Socket, Pid, CbModule, Tracker), ok = ssl_connection:handshake(SslSocket, Timeout), {ok, SslSocket} catch @@ -144,29 +144,10 @@ send_change_cipher(Msg, #state{connection_states = ConnectionStates0, start_link(Role, Host, Port, Socket, Options, User, CbInfo) -> {ok, proc_lib:spawn_link(?MODULE, init, [[Role, Host, Port, Socket, Options, User, CbInfo]])}. -init([Role, Host, Port, Socket, {SSLOpts0, _} = Options, User, CbInfo]) -> +init([Role, Host, Port, Socket, Options, User, CbInfo]) -> process_flag(trap_exit, true), - State0 = initial_state(Role, Host, Port, Socket, Options, User, CbInfo), - Handshake = ssl_handshake:init_handshake_history(), - TimeStamp = calendar:datetime_to_gregorian_seconds({date(), time()}), - try ssl_config:init(SSLOpts0, Role) of - {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, OwnCert, Key, DHParams} -> - Session = State0#state.session, - State = State0#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, - session_cache = CacheHandle, - private_key = Key, - diffie_hellman_params = DHParams}, - gen_fsm:enter_loop(?MODULE, [], hello, State, get_timeout(State)) - catch - throw:Error -> - gen_fsm:enter_loop(?MODULE, [], error, {Error,State0}, get_timeout(State0)) - end. + State = initial_state(Role, Host, Port, Socket, Options, User, CbInfo), + gen_fsm:enter_loop(?MODULE, [], hello, State, get_timeout(State)). %%-------------------------------------------------------------------- %% Description:There should be one instance of this function for each @@ -208,11 +189,11 @@ hello(Hello = #client_hello{client_version = ClientVersion, session_cache = Cache, session_cache_cb = CacheCb, ssl_options = SslOpts}) -> - HashSign = ssl_handshake:select_hashsign(HashSigns, Cert), case tls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert}, Renegotiation) of {Version, {Type, Session}, ConnectionStates, ServerHelloExt} -> + HashSign = ssl_handshake:select_hashsign(HashSigns, Cert, Version), ssl_connection:hello({common_client_hello, Type, ServerHelloExt, HashSign}, State#state{connection_states = ConnectionStates, negotiated_version = Version, @@ -342,8 +323,7 @@ handle_info(Msg, StateName, State) -> %% Reason. The return value is ignored. %%-------------------------------------------------------------------- terminate(Reason, StateName, State) -> - ssl_connection:terminate(Reason, StateName, State). - + catch ssl_connection:terminate(Reason, StateName, State). %%-------------------------------------------------------------------- %% code_change(OldVsn, StateName, State, Extra) -> {ok, StateName, NewState} @@ -352,6 +332,9 @@ terminate(Reason, StateName, State) -> code_change(_OldVsn, StateName, State, _Extra) -> {ok, StateName, State}. +format_status(Type, Data) -> + ssl_connection:format_status(Type, Data). + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- @@ -362,22 +345,13 @@ encode_handshake(Handshake, Version, ConnectionStates0, Hist0) -> ssl_record:encode_handshake(Frag, Version, ConnectionStates0), {Encoded, ConnectionStates, Hist}. - encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) -> ssl_record:encode_change_cipher_spec(Version, ConnectionStates). - - decode_alerts(Bin) -> - decode_alerts(Bin, []). - -decode_alerts(<<?BYTE(Level), ?BYTE(Description), Rest/binary>>, Acc) -> - A = ?ALERT_REC(Level, Description), - decode_alerts(Rest, [A | Acc]); -decode_alerts(<<>>, Acc) -> - lists:reverse(Acc, []). + ssl_alert:decode(Bin). -initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions}, User, +initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, Tracker}, User, {CbModule, DataTag, CloseTag, ErrorTag}) -> ConnectionStates = ssl_record:init_connection_states(Role), @@ -391,9 +365,7 @@ initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions}, User, Monitor = erlang:monitor(process, User), #state{socket_options = SocketOptions, - %% We do not want to save the password in the state so that - %% could be written in the clear into error logs. - ssl_options = SSLOptions#ssl_options{password = undefined}, + ssl_options = SSLOptions, session = #session{is_resumable = new}, transport_cb = CbModule, data_tag = DataTag, @@ -411,7 +383,8 @@ initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions}, User, renegotiation = {false, first}, start_or_recv_from = undefined, send_queue = queue:new(), - protocol_cb = ?MODULE + protocol_cb = ?MODULE, + tracker = Tracker }. next_state(Current,_, #alert{} = Alert, #state{negotiated_version = Version} = State) -> @@ -420,10 +393,13 @@ next_state(Current,_, #alert{} = Alert, #state{negotiated_version = Version} = S next_state(_,Next, no_record, State) -> {next_state, Next, State, get_timeout(State)}; -next_state(_,Next, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, State) -> - Alerts = decode_alerts(EncAlerts), - handle_alerts(Alerts, {next_state, Next, State, get_timeout(State)}); - +next_state(Current, Next, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, #state{negotiated_version = Version} = State) -> + case decode_alerts(EncAlerts) of + Alerts = [_|_] -> + handle_alerts(Alerts, {next_state, Next, State, get_timeout(State)}); + #alert{} = Alert -> + handle_own_alert(Alert, Version, Current, State) + end; next_state(Current, Next, #ssl_tls{type = ?HANDSHAKE, fragment = Data}, State0 = #state{protocol_buffers = #protocol_buffers{tls_handshake_buffer = Buf0} = Buffers, @@ -468,12 +444,16 @@ next_state(_, StateName, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, St next_state(StateName, StateName, Record, State) end; next_state(Current, Next, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = <<1>>} = - _ChangeCipher, - #state{connection_states = ConnectionStates0} = State0) -> + _ChangeCipher, + #state{connection_states = ConnectionStates0} = State0) + when Next == cipher; Next == abbreviated -> ConnectionStates1 = ssl_record:activate_pending_connection_state(ConnectionStates0, read), {Record, State} = next_record(State0#state{connection_states = ConnectionStates1}), - next_state(Current, Next, Record, State); + next_state(Current, Next, Record, State#state{expecting_finished = true}); +next_state(Current, _Next, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = <<1>>} = + _ChangeCipher, #state{negotiated_version = Version} = State) -> + handle_own_alert(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE), Version, Current, State); next_state(Current, Next, #ssl_tls{type = _Unknown}, State0) -> %% Ignore unknown type {Record, State} = next_record(State0), @@ -513,7 +493,7 @@ next_record(State) -> next_record_if_active(State = #state{socket_options = - #socket_options{active = false}}) -> + #socket_options{active = false}}) -> {no_record ,State}; next_record_if_active(State) -> @@ -577,7 +557,8 @@ read_application_data(Data, #state{user_application = {_Mon, Pid}, bytes_to_read = BytesToRead, start_or_recv_from = RecvFrom, timer = Timer, - user_data_buffer = Buffer0} = State0) -> + user_data_buffer = Buffer0, + tracker = Tracker} = State0) -> Buffer1 = if Buffer0 =:= <<>> -> Data; Data =:= <<>> -> Buffer0; @@ -585,7 +566,7 @@ 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), + SocketOpt = deliver_app_data(Transport, Socket, SOpts, ClientData, Pid, RecvFrom, Tracker), cancel_timer(Timer), State = State0#state{user_data_buffer = Buffer, start_or_recv_from = undefined, @@ -606,7 +587,7 @@ read_application_data(Data, #state{user_application = {_Mon, Pid}, {passive, Buffer} -> 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), + deliver_packet_error(Transport, Socket, SOpts, Buffer1, Pid, RecvFrom, Tracker), {stop, normal, State0} end. @@ -661,8 +642,8 @@ decode_packet(Type, Buffer, PacketOpts) -> %% 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) -> - send_or_reply(Active, Pid, From, format_reply(Transport, Socket, SOpts, Data)), + Data, Pid, From, Tracker) -> + send_or_reply(Active, Pid, From, format_reply(Transport, Socket, SOpts, Data, Tracker)), SO = case Data of {P, _, _, _} when ((P =:= http_request) or (P =:= http_response)), ((Type =:= http) or (Type =:= http_bin)) -> @@ -682,20 +663,20 @@ deliver_app_data(Transport, Socket, SOpts = #socket_options{active=Active, packe end. format_reply(_, _,#socket_options{active = false, mode = Mode, packet = Packet, - header = Header}, Data) -> + 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) -> - {ssl, ssl_socket:socket(self(), Transport, Socket, ?MODULE), + header = Header}, Data, Tracker) -> + {ssl, ssl_socket:socket(self(), Transport, Socket, ?MODULE, Tracker), do_format_reply(Mode, Packet, Header, Data)}. -deliver_packet_error(Transport, Socket, SO= #socket_options{active = Active}, Data, Pid, From) -> - send_or_reply(Active, Pid, From, format_packet_error(Transport, Socket, SO, Data)). +deliver_packet_error(Transport, Socket, SO= #socket_options{active = Active}, Data, Pid, From, Tracker) -> + send_or_reply(Active, Pid, From, format_packet_error(Transport, Socket, SO, Data, Tracker)). -format_packet_error(_, _,#socket_options{active = false, mode = Mode}, Data) -> +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) -> - {ssl_error, ssl_socket:socket(self(), Transport, Socket, ?MODULE), +format_packet_error(Transport, Socket, #socket_options{active = _, mode = Mode}, Data, Tracker) -> + {ssl_error, ssl_socket:socket(self(), Transport, Socket, ?MODULE, Tracker), {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}. do_format_reply(binary, _, N, Data) when N > 0 -> % Header mode @@ -751,7 +732,11 @@ handle_tls_handshake(Handle, StateName, handle_tls_handshake(Handle, NextStateName, State); {stop, _,_} = Stop -> Stop - end. + end; + +handle_tls_handshake(_Handle, _StateName, #state{}) -> + throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE)). + write_application_data(Data0, From, #state{socket = Socket, negotiated_version = Version, @@ -835,10 +820,10 @@ handle_alert(#alert{level = ?FATAL} = Alert, StateName, #state{socket = Socket, transport_cb = Transport, ssl_options = SslOpts, start_or_recv_from = From, host = Host, port = Port, session = Session, user_application = {_Mon, Pid}, - role = Role, socket_options = Opts} = State) -> + role = Role, socket_options = Opts, tracker = Tracker} = State) -> invalidate_session(Role, Host, Port, Session), log_alert(SslOpts#ssl_options.log_alert, StateName, Alert), - alert_user(Transport, Socket, StateName, Opts, Pid, From, Alert, Role), + alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, From, Alert, Role), {stop, normal, State}; handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert, @@ -859,36 +844,37 @@ handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, {Record, State} = next_record(State0), next_state(StateName, connection, Record, State); -handle_alert(#alert{level = ?WARNING, description = ?USER_CANCELED} = Alert, StateName, +%% Gracefully log and ignore all other warning alerts +handle_alert(#alert{level = ?WARNING} = Alert, StateName, #state{ssl_options = SslOpts} = State0) -> log_alert(SslOpts#ssl_options.log_alert, StateName, Alert), {Record, State} = next_record(State0), next_state(StateName, StateName, Record, State). -alert_user(Transport, Socket, connection, Opts, Pid, From, Alert, Role) -> - alert_user(Transport,Socket, Opts#socket_options.active, Pid, From, Alert, Role); -alert_user(Transport, Socket,_, _, _, From, Alert, Role) -> - alert_user(Transport, Socket, From, Alert, Role). +alert_user(Transport, Tracker, Socket, connection, Opts, Pid, From, Alert, Role) -> + alert_user(Transport, Tracker, Socket, Opts#socket_options.active, Pid, From, Alert, Role); +alert_user(Transport, Tracker, Socket,_, _, _, From, Alert, Role) -> + alert_user(Transport, Tracker, Socket, From, Alert, Role). -alert_user(Transport, Socket, From, Alert, Role) -> - alert_user(Transport, Socket, false, no_pid, From, Alert, Role). +alert_user(Transport, Tracker, Socket, From, Alert, Role) -> + alert_user(Transport, Tracker, Socket, false, no_pid, From, Alert, Role). -alert_user(_,_, false = Active, Pid, From, Alert, Role) -> +alert_user(_, _, _, false = Active, Pid, From, Alert, Role) -> %% 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, Socket, Active, Pid, From, Alert, Role) -> +alert_user(Transport, Tracker, Socket, Active, Pid, From, Alert, Role) -> case ssl_alert:reason_code(Alert, Role) of closed -> send_or_reply(Active, Pid, From, {ssl_closed, ssl_socket:socket(self(), - Transport, Socket, ?MODULE)}); + Transport, Socket, ?MODULE, Tracker)}); ReasonCode -> send_or_reply(Active, Pid, From, {ssl_error, ssl_socket:socket(self(), - Transport, Socket, ?MODULE), ReasonCode}) + Transport, Socket, ?MODULE, Tracker), ReasonCode}) end. log_alert(true, Info, Alert) -> @@ -921,15 +907,17 @@ handle_own_alert(Alert, Version, StateName, handle_normal_shutdown(Alert, _, #state{socket = Socket, transport_cb = Transport, start_or_recv_from = StartFrom, + tracker = Tracker, role = Role, renegotiation = {false, first}}) -> - alert_user(Transport, Socket, StartFrom, Alert, Role); + alert_user(Transport, Tracker,Socket, StartFrom, Alert, Role); handle_normal_shutdown(Alert, StateName, #state{socket = Socket, socket_options = Opts, transport_cb = Transport, user_application = {_Mon, Pid}, + tracker = Tracker, start_or_recv_from = RecvFrom, role = Role}) -> - alert_user(Transport, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role). + alert_user(Transport, Tracker, Socket, StateName, Opts, Pid, RecvFrom, Alert, Role). handle_unexpected_message(Msg, Info, #state{negotiated_version = Version} = State) -> Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE), |