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-rw-r--r--lib/ssl/src/dtls_connection.erl175
1 files changed, 95 insertions, 80 deletions
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index ff3e69bae5..7d2605e013 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -45,7 +45,7 @@
-export([renegotiate/2,
reinit_handshake_data/1,
send_handshake/2, queue_handshake/2, queue_change_cipher/2,
- select_sni_extension/1]).
+ select_sni_extension/1, empty_connection_state/2]).
%% Alert and close handling
-export([encode_alert/3,send_alert/2, close/5, protocol_name/0]).
@@ -79,9 +79,9 @@ start_fsm(Role, Host, Port, Socket, {#ssl_options{erl_dist = false},_, Tracker}
Error
end.
-send_handshake(Handshake, #state{connection_states = ConnectionStates} = States) ->
+send_handshake(Handshake, #state{connection_states = ConnectionStates} = State) ->
#{epoch := Epoch} = ssl_record:current_connection_state(ConnectionStates, write),
- send_handshake_flight(queue_handshake(Handshake, States), Epoch).
+ send_handshake_flight(queue_handshake(Handshake, State), Epoch).
queue_handshake(Handshake0, #state{tls_handshake_history = Hist0,
negotiated_version = Version,
@@ -114,8 +114,8 @@ send_handshake_flight(#state{socket = Socket,
%% TODO remove hardcoded Max size
{Encoded, ConnectionStates} =
encode_handshake_flight(lists:reverse(Flight), Version, 1400, Epoch, ConnectionStates0),
- send(Transport, Socket, Encoded),
- {State0#state{connection_states = ConnectionStates}, []};
+ send(Transport, Socket, Encoded),
+ {State0#state{connection_states = ConnectionStates}, []};
send_handshake_flight(#state{socket = Socket,
transport_cb = Transport,
@@ -188,9 +188,10 @@ reinit_handshake_data(#state{protocol_buffers = Buffers} = State) ->
public_key_info = undefined,
tls_handshake_history = ssl_handshake:init_handshake_history(),
flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
- protocol_buffers =
+ flight_buffer = new_flight(),
+ protocol_buffers =
Buffers#protocol_buffers{
- dtls_handshake_next_seq = 0,
+ dtls_handshake_next_seq = 0,
dtls_handshake_next_fragments = [],
dtls_handshake_later_fragments = []
}}.
@@ -199,6 +200,9 @@ select_sni_extension(#client_hello{extensions = HelloExtensions}) ->
HelloExtensions#hello_extensions.sni;
select_sni_extension(_) ->
undefined.
+empty_connection_state(ConnectionEnd, BeastMitigation) ->
+ Empty = ssl_record:empty_connection_state(ConnectionEnd, BeastMitigation),
+ dtls_record:empty_connection_state(Empty).
socket(Pid, Transport, Socket, Connection, _) ->
dtls_socket:socket(Pid, Transport, Socket, Connection).
@@ -273,28 +277,28 @@ init({call, From}, {start, Timeout},
{Record, State} = next_record(State3),
next_event(hello, Record, State, Actions);
init({call, _} = Type, Event, #state{role = server, transport_cb = gen_udp} = State) ->
- Result = ssl_connection:init(Type, Event,
- State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
- protocol_specific = #{current_cookie_secret => dtls_v1:cookie_secret(),
- previous_cookie_secret => <<>>,
- ignored_alerts => 0,
- max_ignored_alerts => 10}},
- ?MODULE),
+ Result = ssl_connection:?FUNCTION_NAME(Type, Event,
+ State#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
+ protocol_specific = #{current_cookie_secret => dtls_v1:cookie_secret(),
+ previous_cookie_secret => <<>>,
+ ignored_alerts => 0,
+ max_ignored_alerts => 10}},
+ ?MODULE),
erlang:send_after(dtls_v1:cookie_timeout(), self(), new_cookie_secret),
Result;
-
+
init({call, _} = Type, Event, #state{role = server} = State) ->
%% I.E. DTLS over sctp
- ssl_connection:init(Type, Event, State#state{flight_state = reliable}, ?MODULE);
+ ssl_connection:?FUNCTION_NAME(Type, Event, State#state{flight_state = reliable}, ?MODULE);
init(Type, Event, State) ->
- ssl_connection:init(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
error(enter, _, State) ->
{keep_state, State};
error({call, From}, {start, _Timeout}, {Error, State}) ->
{stop_and_reply, normal, {reply, From, {error, Error}}, State};
error({call, From}, Msg, State) ->
- handle_call(Msg, From, error, State);
+ handle_call(Msg, From, ?FUNCTION_NAME, State);
error(_, _, _) ->
{keep_state_and_data, [postpone]}.
@@ -326,7 +330,7 @@ hello(internal, #client_hello{cookie = <<>>,
State1 = prepare_flight(State0#state{negotiated_version = Version}),
{State2, Actions} = send_handshake(VerifyRequest, State1),
{Record, State} = next_record(State2),
- next_event(hello, Record, State#state{tls_handshake_history = ssl_handshake:init_handshake_history()}, Actions);
+ next_event(?FUNCTION_NAME, Record, State#state{tls_handshake_history = ssl_handshake:init_handshake_history()}, Actions);
hello(internal, #client_hello{cookie = Cookie} = Hello, #state{role = server,
transport_cb = Transport,
socket = Socket,
@@ -355,19 +359,20 @@ hello(internal, #hello_verify_request{cookie = Cookie}, #state{role = client,
session_cache = Cache,
session_cache_cb = CacheCb
} = State0) ->
- State1 = prepare_flight(State0#state{tls_handshake_history = ssl_handshake:init_handshake_history()}),
+
Hello = dtls_handshake:client_hello(Host, Port, Cookie, ConnectionStates0,
SslOpts,
Cache, CacheCb, Renegotiation, OwnCert),
Version = Hello#client_hello.client_version,
- HelloVersion = dtls_record:lowest_protocol_version(SslOpts#ssl_options.versions),
- {State2, Actions} = send_handshake(Hello, State1#state{negotiated_version = HelloVersion}),
+ State1 = prepare_flight(State0#state{tls_handshake_history = ssl_handshake:init_handshake_history()}),
+
+ {State2, Actions} = send_handshake(Hello, State1),
State3 = State2#state{negotiated_version = Version, %% Requested version
session =
Session0#session{session_id =
Hello#client_hello.session_id}},
{Record, State} = next_record(State3),
- next_event(hello, Record, State, Actions);
+ next_event(?FUNCTION_NAME, Record, State, Actions);
hello(internal, #server_hello{} = Hello,
#state{connection_states = ConnectionStates0,
negotiated_version = ReqVersion,
@@ -376,92 +381,97 @@ hello(internal, #server_hello{} = Hello,
ssl_options = SslOptions} = State) ->
case dtls_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
#alert{} = Alert ->
- handle_own_alert(Alert, ReqVersion, hello, State);
+ handle_own_alert(Alert, ReqVersion, ?FUNCTION_NAME, State);
{Version, NewId, ConnectionStates, ProtoExt, Protocol} ->
ssl_connection:handle_session(Hello,
Version, NewId, ConnectionStates, ProtoExt, Protocol, State)
end;
hello(internal, {handshake, {#client_hello{cookie = <<>>} = Handshake, _}}, State) ->
%% Initial hello should not be in handshake history
- {next_state, hello, State, [{next_event, internal, Handshake}]};
+ {next_state, ?FUNCTION_NAME, State, [{next_event, internal, Handshake}]};
hello(internal, {handshake, {#hello_verify_request{} = Handshake, _}}, State) ->
%% hello_verify should not be in handshake history
- {next_state, hello, State, [{next_event, internal, Handshake}]};
+ {next_state, ?FUNCTION_NAME, State, [{next_event, internal, Handshake}]};
hello(info, Event, State) ->
- handle_info(Event, hello, State);
+ handle_info(Event, ?FUNCTION_NAME, State);
hello(state_timeout, Event, State) ->
- handle_state_timeout(Event, hello, State);
+ handle_state_timeout(Event, ?FUNCTION_NAME, State);
hello(Type, Event, State) ->
- ssl_connection:hello(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
abbreviated(enter, _, State0) ->
{State, Actions} = handle_flight_timer(State0),
{keep_state, State, Actions};
abbreviated(info, Event, State) ->
- handle_info(Event, abbreviated, State);
+ handle_info(Event, ?FUNCTION_NAME, State);
abbreviated(internal = Type,
#change_cipher_spec{type = <<1>>} = Event,
#state{connection_states = ConnectionStates0} = State) ->
ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
- ssl_connection:abbreviated(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
+ ssl_connection:?FUNCTION_NAME(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
abbreviated(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
- ssl_connection:abbreviated(Type, Event,
- prepare_flight(State#state{connection_states = ConnectionStates,
- flight_state = connection}), ?MODULE);
+ ssl_connection:?FUNCTION_NAME(Type, Event,
+ prepare_flight(State#state{connection_states = ConnectionStates,
+ flight_state = connection}), ?MODULE);
abbreviated(state_timeout, Event, State) ->
- handle_state_timeout(Event, abbreviated, State);
+ handle_state_timeout(Event, ?FUNCTION_NAME, State);
abbreviated(Type, Event, State) ->
- ssl_connection:abbreviated(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
certify(enter, _, State0) ->
{State, Actions} = handle_flight_timer(State0),
{keep_state, State, Actions};
certify(info, Event, State) ->
- handle_info(Event, certify, State);
+ handle_info(Event, ?FUNCTION_NAME, State);
certify(internal = Type, #server_hello_done{} = Event, State) ->
ssl_connection:certify(Type, Event, prepare_flight(State), ?MODULE);
certify(state_timeout, Event, State) ->
- handle_state_timeout(Event, certify, State);
+ handle_state_timeout(Event, ?FUNCTION_NAME, State);
certify(Type, Event, State) ->
- ssl_connection:certify(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
cipher(enter, _, State0) ->
{State, Actions} = handle_flight_timer(State0),
{keep_state, State, Actions};
cipher(info, Event, State) ->
- handle_info(Event, cipher, State);
+ handle_info(Event, ?FUNCTION_NAME, State);
cipher(internal = Type, #change_cipher_spec{type = <<1>>} = Event,
#state{connection_states = ConnectionStates0} = State) ->
ConnectionStates1 = dtls_record:save_current_connection_state(ConnectionStates0, read),
ConnectionStates = dtls_record:next_epoch(ConnectionStates1, read),
- ssl_connection:cipher(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
+ ssl_connection:?FUNCTION_NAME(Type, Event, State#state{connection_states = ConnectionStates}, ?MODULE);
cipher(internal = Type, #finished{} = Event, #state{connection_states = ConnectionStates} = State) ->
- ssl_connection:cipher(Type, Event,
- prepare_flight(State#state{connection_states = ConnectionStates,
- flight_state = connection}),
- ?MODULE);
+ ssl_connection:?FUNCTION_NAME(Type, Event,
+ prepare_flight(State#state{connection_states = ConnectionStates,
+ flight_state = connection}),
+ ?MODULE);
cipher(state_timeout, Event, State) ->
- handle_state_timeout(Event, cipher, State);
+ handle_state_timeout(Event, ?FUNCTION_NAME, State);
cipher(Type, Event, State) ->
- ssl_connection:cipher(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
connection(enter, _, State) ->
{keep_state, State};
connection(info, Event, State) ->
- handle_info(Event, connection, State);
+ handle_info(Event, ?FUNCTION_NAME, State);
connection(internal, #hello_request{}, #state{host = Host, port = Port,
- session = #session{own_certificate = Cert} = Session0,
- session_cache = Cache, session_cache_cb = CacheCb,
- ssl_options = SslOpts,
- connection_states = ConnectionStates0,
- renegotiation = {Renegotiation, _}} = State0) ->
+ session = #session{own_certificate = Cert} = Session0,
+ session_cache = Cache, session_cache_cb = CacheCb,
+ ssl_options = SslOpts,
+ connection_states = ConnectionStates0,
+ renegotiation = {Renegotiation, _}} = State0) ->
+
Hello = dtls_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
Cache, CacheCb, Renegotiation, Cert),
- {State1, Actions} = send_handshake(Hello, State0),
+ Version = Hello#client_hello.client_version,
+ HelloVersion = dtls_record:hello_version(Version, SslOpts#ssl_options.versions),
+ State1 = prepare_flight(State0),
+ {State2, Actions} = send_handshake(Hello, State1#state{negotiated_version = HelloVersion}),
{Record, State} =
next_record(
- State1#state{session = Session0#session{session_id
+ State2#state{flight_state = {retransmit, ?INITIAL_RETRANSMIT_TIMEOUT},
+ session = Session0#session{session_id
= Hello#client_hello.session_id}}),
next_event(hello, Record, State, Actions);
connection(internal, #client_hello{} = Hello, #state{role = server, allow_renegotiate = true} = State) ->
@@ -471,20 +481,21 @@ connection(internal, #client_hello{} = Hello, #state{role = server, allow_renego
%% initiated renegotiation we will disallow many client initiated
%% renegotiations immediately after each other.
erlang:send_after(?WAIT_TO_ALLOW_RENEGOTIATION, self(), allow_renegotiate),
- {next_state, hello, State#state{allow_renegotiate = false}, [{next_event, internal, Hello}]};
+ {next_state, hello, State#state{allow_renegotiate = false, renegotiation = {true, peer}},
+ [{next_event, internal, Hello}]};
connection(internal, #client_hello{}, #state{role = server, allow_renegotiate = false} = State0) ->
Alert = ?ALERT_REC(?WARNING, ?NO_RENEGOTIATION),
State1 = send_alert(Alert, State0),
{Record, State} = ssl_connection:prepare_connection(State1, ?MODULE),
- next_event(connection, Record, State);
+ next_event(?FUNCTION_NAME, Record, State);
connection(Type, Event, State) ->
- ssl_connection:connection(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
%%TODO does this make sense for DTLS ?
downgrade(enter, _, State) ->
{keep_state, State};
downgrade(Type, Event, State) ->
- ssl_connection:downgrade(Type, Event, State, ?MODULE).
+ ssl_connection:?FUNCTION_NAME(Type, Event, State, ?MODULE).
%%--------------------------------------------------------------------
%% Description: This function is called by a gen_fsm when it receives any
@@ -542,7 +553,6 @@ handle_info(new_cookie_secret, StateName,
handle_info(Msg, StateName, State) ->
ssl_connection:handle_info(Msg, StateName, State).
-
handle_call(Event, From, StateName, State) ->
ssl_connection:handle_call(Event, From, StateName, State, ?MODULE).
@@ -796,7 +806,13 @@ next_event(connection = StateName, no_record,
case next_record_if_active(State0) of
{no_record, State} ->
ssl_connection:hibernate_after(StateName, State, Actions);
- {#ssl_tls{epoch = CurrentEpoch} = Record, State} ->
+ {#ssl_tls{epoch = CurrentEpoch,
+ type = ?HANDSHAKE,
+ version = Version} = Record, State1} ->
+ State = dtls_version(StateName, Version, State1),
+ {next_state, StateName, State,
+ [{next_event, internal, {protocol_record, Record}} | Actions]};
+ {#ssl_tls{epoch = CurrentEpoch} = Record, State} ->
{next_state, StateName, State, [{next_event, internal, {protocol_record, Record}} | Actions]};
{#ssl_tls{epoch = Epoch,
type = ?HANDSHAKE,
@@ -822,6 +838,12 @@ next_event(connection = StateName, no_record,
next_event(connection = StateName, Record,
#state{connection_states = #{current_read := #{epoch := CurrentEpoch}}} = State0, Actions) ->
case Record of
+ #ssl_tls{epoch = CurrentEpoch,
+ type = ?HANDSHAKE,
+ version = Version} = Record ->
+ State = dtls_version(StateName, Version, State0),
+ {next_state, StateName, State,
+ [{next_event, internal, {protocol_record, Record}} | Actions]};
#ssl_tls{epoch = CurrentEpoch} ->
{next_state, StateName, State0, [{next_event, internal, {protocol_record, Record}} | Actions]};
#ssl_tls{epoch = Epoch,
@@ -845,11 +867,11 @@ next_event(StateName, Record,
case Record of
no_record ->
{next_state, StateName, State0, Actions};
- #ssl_tls{epoch = CurrentEpoch,
- version = Version} = Record ->
- {next_state, StateName,
- dtls_version(StateName, Version, State0),
- [{next_event, internal, {protocol_record, Record}} | Actions]};
+ #ssl_tls{epoch = CurrentEpoch,
+ version = Version} = Record ->
+ State = dtls_version(StateName, Version, State0),
+ {next_state, StateName, State,
+ [{next_event, internal, {protocol_record, Record}} | Actions]};
#ssl_tls{epoch = _Epoch,
version = _Version} = _Record ->
%% TODO maybe buffer later epoch
@@ -895,7 +917,7 @@ next_flight(Flight) ->
Flight#{handshakes => [],
change_cipher_spec => undefined,
handshakes_after_change_cipher_spec => []}.
-
+
handle_flight_timer(#state{transport_cb = gen_udp,
flight_state = {retransmit, Timeout}} = State) ->
start_retransmision_timer(Timeout, State);
@@ -923,21 +945,15 @@ dtls_handshake_events(Packets) ->
renegotiate(#state{role = client} = State, Actions) ->
%% Handle same way as if server requested
%% the renegotiation
- Hs0 = ssl_handshake:init_handshake_history(),
- {next_state, connection, State#state{tls_handshake_history = Hs0,
- protocol_buffers = #protocol_buffers{}},
+ %% Hs0 = ssl_handshake:init_handshake_history(),
+ {next_state, connection, State,
[{next_event, internal, #hello_request{}} | Actions]};
-renegotiate(#state{role = server,
- connection_states = CS0} = State0, Actions) ->
+renegotiate(#state{role = server} = State0, Actions) ->
HelloRequest = ssl_handshake:hello_request(),
- CS = CS0#{write_msg_seq => 0},
- {State1, MoreActions} = send_handshake(HelloRequest,
- State0#state{connection_states =
- CS}),
- Hs0 = ssl_handshake:init_handshake_history(),
- {Record, State} = next_record(State1#state{tls_handshake_history = Hs0,
- protocol_buffers = #protocol_buffers{}}),
+ State1 = prepare_flight(State0),
+ {State2, MoreActions} = send_handshake(HelloRequest, State1),
+ {Record, State} = next_record(State2),
next_event(hello, Record, State, Actions ++ MoreActions).
handle_alerts([], Result) ->
@@ -953,7 +969,6 @@ retransmit_epoch(_StateName, #state{connection_states = ConnectionStates}) ->
#{epoch := Epoch} =
ssl_record:current_connection_state(ConnectionStates, write),
Epoch.
-
update_handshake_history(#hello_verify_request{}, _, Hist) ->
Hist;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 18:27:03 +0000