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-rw-r--r--lib/ssl/src/ssl_connection.erl184
1 files changed, 91 insertions, 93 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 9268f39424..b187d038a1 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -357,15 +357,15 @@ hello(start, #state{host = Host, port = Port, role = client,
Session0#session{session_id = Hello#client_hello.session_id},
tls_handshake_hashes = Hashes1},
{Record, State} = next_record(State1),
- next_state(hello, Record, State);
+ next_state(hello, hello, Record, State);
hello(start, #state{role = server} = State0) ->
{Record, State} = next_record(State0),
- next_state(hello, Record, State);
+ next_state(hello, hello, Record, State);
hello(#hello_request{}, #state{role = client} = State0) ->
{Record, State} = next_record(State0),
- next_state(hello, Record, State);
+ next_state(hello, hello, Record, State);
hello(#server_hello{cipher_suite = CipherSuite,
compression_method = Compression} = Hello,
@@ -428,7 +428,7 @@ hello(Msg, State) ->
%%--------------------------------------------------------------------
abbreviated(#hello_request{}, State0) ->
{Record, State} = next_record(State0),
- next_state(hello, Record, State);
+ next_state(abbreviated, hello, Record, State);
abbreviated(#finished{verify_data = Data} = Finished,
#state{role = server,
@@ -481,7 +481,7 @@ abbreviated(Msg, State) ->
%%--------------------------------------------------------------------
certify(#hello_request{}, State0) ->
{Record, State} = next_record(State0),
- next_state(hello, Record, State);
+ next_state(certify, hello, Record, State);
certify(#certificate{asn1_certificates = []},
#state{role = server, negotiated_version = Version,
@@ -489,7 +489,7 @@ certify(#certificate{asn1_certificates = []},
fail_if_no_peer_cert = true}} =
State) ->
Alert = ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE),
- handle_own_alert(Alert, Version, certify_certificate, State),
+ handle_own_alert(Alert, Version, certify, State),
{stop, normal, State};
certify(#certificate{asn1_certificates = []},
@@ -498,7 +498,7 @@ certify(#certificate{asn1_certificates = []},
fail_if_no_peer_cert = false}} =
State0) ->
{Record, State} = next_record(State0#state{client_certificate_requested = false}),
- next_state(certify, Record, State);
+ next_state(certify, certify, Record, State);
certify(#certificate{} = Cert,
#state{negotiated_version = Version,
@@ -513,7 +513,7 @@ certify(#certificate{} = Cert,
handle_peer_cert(PeerCert, PublicKeyInfo,
State#state{client_certificate_requested = false});
#alert{} = Alert ->
- handle_own_alert(Alert, Version, certify_certificate, State),
+ handle_own_alert(Alert, Version, certify, State),
{stop, normal, State}
end;
@@ -524,10 +524,9 @@ certify(#server_key_exchange{} = KeyExchangeMsg,
case handle_server_key(KeyExchangeMsg, State0) of
#state{} = State1 ->
{Record, State} = next_record(State1),
- next_state(certify, Record, State);
+ next_state(certify, certify, Record, State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version, certify_server_keyexchange,
- State0),
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end;
@@ -537,7 +536,7 @@ certify(#server_key_exchange{} = Msg,
certify(#certificate_request{}, State0) ->
{Record, State} = next_record(State0#state{client_certificate_requested = true}),
- next_state(certify, Record, State);
+ next_state(certify, certify, Record, State);
%% Master secret was determined with help of server-key exchange msg
certify(#server_hello_done{},
@@ -552,8 +551,7 @@ certify(#server_hello_done{},
State = State0#state{connection_states = ConnectionStates1},
client_certify_and_key_exchange(State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version,
- certify_server_hello_done, State0),
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end;
@@ -572,8 +570,7 @@ certify(#server_hello_done{},
session = Session},
client_certify_and_key_exchange(State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version,
- certify_server_hello_done, State0),
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end;
@@ -590,7 +587,7 @@ certify(#client_key_exchange{exchange_keys = Keys},
certify_client_key_exchange(ssl_handshake:decode_client_key(Keys, KeyAlg, Version), State)
catch
#alert{} = Alert ->
- handle_own_alert(Alert, Version, certify_client_key_exchange, State),
+ handle_own_alert(Alert, Version, certify, State),
{stop, normal, State}
end;
@@ -613,10 +610,9 @@ certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS
State1 = State0#state{connection_states = ConnectionStates,
session = Session},
{Record, State} = next_record(State1),
- next_state(cipher, Record, State);
+ next_state(certify, cipher, Record, State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version,
- certify_client_key_exchange, State0),
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end;
@@ -628,10 +624,9 @@ certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPubl
case dh_master_secret(crypto:mpint(P), crypto:mpint(G), ClientPublicDhKey, ServerDhPrivateKey, State0) of
#state{} = State1 ->
{Record, State} = next_record(State1),
- next_state(cipher, Record, State);
+ next_state(certify, cipher, Record, State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version,
- certify_client_key_exchange, State0),
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end.
@@ -641,7 +636,7 @@ certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPubl
%%--------------------------------------------------------------------
cipher(#hello_request{}, State0) ->
{Record, State} = next_record(State0),
- next_state(hello, Record, State);
+ next_state(cipher, hello, Record, State);
cipher(#certificate_verify{signature = Signature},
#state{role = server,
@@ -654,7 +649,7 @@ cipher(#certificate_verify{signature = Signature},
Version, MasterSecret, Hashes) of
valid ->
{Record, State} = next_record(State0),
- next_state(cipher, Record, State);
+ next_state(cipher, cipher, Record, State);
#alert{} = Alert ->
handle_own_alert(Alert, Version, cipher, State0),
{stop, normal, State0}
@@ -707,11 +702,13 @@ connection(#hello_request{}, #state{host = Host, port = Port,
{Record, State} = next_record(State0#state{connection_states =
ConnectionStates1,
tls_handshake_hashes = Hashes1}),
- next_state(hello, Record, State);
+ next_state(connection, hello, Record, State);
connection(#client_hello{} = Hello, #state{role = server, allow_renegotiate = true} = State) ->
- %% Mitigate Computational DoS attack http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
- %% http://www.thc.org/thc-ssl-dos/ Rather than disabling client initiated renegotiation
- %% we will disallow many client initiated renegotiations immediately after each other.
+ %% Mitigate Computational DoS attack
+ %% http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
+ %% http://www.thc.org/thc-ssl-dos/ Rather than disabling client
+ %% initiated renegotiation we will disallow many client initiated
+ %% renegotiations immediately after each other.
erlang:send_after(?WAIT_TO_ALLOW_RENEGOTIATION, self(), allow_renegotiate),
hello(Hello, State#state{allow_renegotiate = false});
@@ -725,7 +722,7 @@ connection(#client_hello{}, #state{role = server, allow_renegotiate = false,
Transport:send(Socket, BinMsg),
{Record, State} = next_record(State0#state{connection_states =
ConnectionStates}),
- next_state(connection, Record, State);
+ next_state(connection, connection, Record, State);
connection(timeout, State) ->
{next_state, connection, State, hibernate};
@@ -862,7 +859,7 @@ handle_sync_event({set_opts, Opts0}, _From, StateName,
Buffer =:= <<>>, Opts1#socket_options.active =:= false ->
%% Need data, set active once
{Record, State2} = next_record_if_active(State1),
- case next_state(StateName, Record, State2) of
+ case next_state(StateName, StateName, Record, State2) of
{next_state, StateName, State, Timeout} ->
{reply, Reply, StateName, State, Timeout};
{stop, Reason, State} ->
@@ -876,7 +873,7 @@ handle_sync_event({set_opts, Opts0}, _From, StateName,
Stop = {stop,_,_} ->
Stop;
{Record, State2} ->
- case next_state(StateName, Record, State2) of
+ case next_state(StateName, StateName, Record, State2) of
{next_state, StateName, State, Timeout} ->
{reply, Reply, StateName, State, Timeout};
{stop, Reason, State} ->
@@ -924,22 +921,18 @@ handle_sync_event(peer_certificate, _, StateName,
%% raw data from TCP, unpack records
handle_info({Protocol, _, Data}, StateName,
- #state{data_tag = Protocol,
- negotiated_version = Version} = State0) ->
+ #state{data_tag = Protocol} = State0) ->
case next_tls_record(Data, State0) of
{Record, State} ->
- next_state(StateName, Record, State);
+ next_state(StateName, StateName, Record, State);
#alert{} = Alert ->
- handle_own_alert(Alert, Version, StateName, State0),
+ handle_normal_shutdown(Alert, StateName, State0),
{stop, normal, State0}
end;
-handle_info({CloseTag, Socket}, _StateName,
+handle_info({CloseTag, Socket}, StateName,
#state{socket = Socket, close_tag = CloseTag,
- negotiated_version = Version,
- socket_options = Opts,
- user_application = {_Mon,Pid}, from = From,
- role = Role} = State) ->
+ negotiated_version = Version} = State) ->
%% Note that as of TLS 1.1,
%% failure to properly close a connection no longer requires that a
%% session not be resumed. This is a change from TLS 1.0 to conform
@@ -954,8 +947,7 @@ handle_info({CloseTag, Socket}, _StateName,
%%invalidate_session(Role, Host, Port, Session)
ok
end,
- alert_user(Opts#socket_options.active, Pid, From,
- ?ALERT_REC(?WARNING, ?CLOSE_NOTIFY), Role),
+ handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
{stop, normal, State};
handle_info({ErrorTag, Socket, econnaborted}, StateName,
@@ -964,12 +956,11 @@ handle_info({ErrorTag, Socket, econnaborted}, StateName,
alert_user(User, ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE), Role),
{stop, normal, State};
-handle_info({ErrorTag, Socket, Reason}, _,
- #state{socket = Socket, from = User,
- role = Role, error_tag = ErrorTag} = 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),
- alert_user(User, ?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), Role),
+ handle_normal_shutdown(?ALERT_REC(?FATAL, ?CLOSE_NOTIFY), StateName, State),
{stop, normal, State};
handle_info({'DOWN', MonitorRef, _, _, _}, _,
@@ -1214,7 +1205,7 @@ handle_peer_cert(PeerCert, PublicKeyInfo,
Session#session{peer_certificate = PeerCert},
public_key_info = PublicKeyInfo},
{Record, State} = next_record(State1),
- next_state(certify, Record, State).
+ next_state(certify, certify, Record, State).
certify_client(#state{client_certificate_requested = true, role = client,
connection_states = ConnectionStates0,
@@ -1256,8 +1247,7 @@ verify_client_cert(#state{client_certificate_requested = true, role = client,
ignore ->
State;
#alert{} = Alert ->
- handle_own_alert(Alert, Version, certify, State)
-
+ throw(Alert)
end;
verify_client_cert(#state{client_certificate_requested = false} = State) ->
State.
@@ -1289,7 +1279,7 @@ do_server_hello(Type, #state{negotiated_version = Version,
ConnectionStates,
tls_handshake_hashes = Hashes},
{Record, State} = next_record(State3),
- next_state(abbreviated, Record, State);
+ next_state(hello, abbreviated, Record, State);
#alert{} = Alert ->
handle_own_alert(Alert, Version, hello, State1),
{stop, normal, State1}
@@ -1309,7 +1299,7 @@ new_server_hello(#server_hello{cipher_suite = CipherSuite,
cipher_suite = CipherSuite,
compression_method = Compression},
{Record, State} = next_record(State2#state{session = Session}),
- next_state(certify, Record, State)
+ next_state(hello, certify, Record, State)
catch
#alert{} = Alert ->
handle_own_alert(Alert, Version, hello, State0),
@@ -1321,7 +1311,7 @@ handle_new_session(NewId, CipherSuite, Compression, #state{session = Session0} =
cipher_suite = CipherSuite,
compression_method = Compression},
{Record, State} = next_record(State0#state{session = Session}),
- next_state(certify, Record, State).
+ next_state(hello, certify, Record, State).
handle_resumed_session(SessId, #state{connection_states = ConnectionStates0,
negotiated_version = Version,
@@ -1336,7 +1326,7 @@ handle_resumed_session(SessId, #state{connection_states = ConnectionStates0,
next_record(State0#state{
connection_states = ConnectionStates1,
session = Session}),
- next_state(abbreviated, Record, State);
+ next_state(hello, abbreviated, Record, State);
#alert{} = Alert ->
handle_own_alert(Alert, Version, hello, State0),
{stop, normal, State0}
@@ -1353,10 +1343,10 @@ client_certify_and_key_exchange(#state{negotiated_version = Version} =
client_certificate_requested = false,
tls_handshake_hashes = Hashes},
{Record, State} = next_record(State2),
- next_state(cipher, Record, State)
+ next_state(certify, cipher, Record, State)
catch
- #alert{} = Alert ->
- handle_own_alert(Alert, Version, client_certify_and_key_exchange, State0),
+ throw:#alert{} = Alert ->
+ handle_own_alert(Alert, Version, certify, State0),
{stop, normal, State0}
end.
@@ -1686,13 +1676,13 @@ passive_receive(State0 = #state{user_data_buffer = Buffer}, StateName) ->
case Buffer of
<<>> ->
{Record, State} = next_record(State0),
- next_state(StateName, Record, State);
+ next_state(StateName, StateName, Record, State);
_ ->
case read_application_data(<<>>, State0) of
Stop = {stop, _, _} ->
Stop;
{Record, State} ->
- next_state(StateName, Record, State)
+ next_state(StateName, StateName, Record, State)
end
end.
@@ -1863,6 +1853,10 @@ header(N, Binary) ->
send_or_reply(false, _Pid, From, Data) when From =/= undefined ->
gen_fsm: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).
@@ -1887,18 +1881,18 @@ handle_tls_handshake(Handle, StateName, #state{tls_packets = [Packet | Packets]}
Stop
end.
-next_state(_, #alert{} = Alert, #state{negotiated_version = Version} = State) ->
- handle_own_alert(Alert, Version, decipher_error, State),
+next_state(Current,_, #alert{} = Alert, #state{negotiated_version = Version} = State) ->
+ handle_own_alert(Alert, Version, Current, State),
{stop, normal, State};
-next_state(Next, no_record, State) ->
+next_state(_,Next, no_record, State) ->
{next_state, Next, State, get_timeout(State)};
-next_state(Next, #ssl_tls{type = ?ALERT, fragment = EncAlerts}, 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(StateName, #ssl_tls{type = ?HANDSHAKE, fragment = Data},
+next_state(Current, Next, #ssl_tls{type = ?HANDSHAKE, fragment = Data},
State0 = #state{tls_handshake_buffer = Buf0, negotiated_version = Version}) ->
Handle =
fun({#hello_request{} = Packet, _}, {next_state, connection = SName, State}) ->
@@ -1924,30 +1918,30 @@ next_state(StateName, #ssl_tls{type = ?HANDSHAKE, fragment = Data},
try
{Packets, Buf} = ssl_handshake:get_tls_handshake(Data,Buf0),
State = State0#state{tls_packets = Packets, tls_handshake_buffer = Buf},
- handle_tls_handshake(Handle, StateName, State)
+ handle_tls_handshake(Handle, Next, State)
catch throw:#alert{} = Alert ->
- handle_own_alert(Alert, Version, StateName, State0),
+ handle_own_alert(Alert, Version, Current, State0),
{stop, normal, State0}
end;
-next_state(StateName, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, State0) ->
+next_state(_, StateName, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, State0) ->
case read_application_data(Data, State0) of
Stop = {stop,_,_} ->
Stop;
{Record, State} ->
- next_state(StateName, Record, State)
+ next_state(StateName, StateName, Record, State)
end;
-next_state(StateName, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = <<1>>} =
+next_state(Current, Next, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = <<1>>} =
_ChangeCipher,
#state{connection_states = ConnectionStates0} = State0) ->
ConnectionStates1 =
ssl_record:activate_pending_connection_state(ConnectionStates0, read),
{Record, State} = next_record(State0#state{connection_states = ConnectionStates1}),
- next_state(StateName, Record, State);
-next_state(StateName, #ssl_tls{type = _Unknown}, State0) ->
+ next_state(Current, Next, Record, State);
+next_state(Current, Next, #ssl_tls{type = _Unknown}, State0) ->
%% Ignore unknown type
{Record, State} = next_record(State0),
- next_state(StateName, Record, State).
+ next_state(Current, Next, Record, State).
next_tls_record(Data, #state{tls_record_buffer = Buf0,
tls_cipher_texts = CT0} = State0) ->
@@ -1999,23 +1993,23 @@ next_state_connection(StateName, #state{send_queue = Queue0,
State#state{connection_states = ConnectionStates,
send_queue = Queue});
{empty, Queue0} ->
- next_state_is_connection(State)
+ next_state_is_connection(StateName, State)
end.
%% In next_state_is_connection/1: clear tls_handshake_hashes,
%% premaster_secret and public_key_info (only needed during handshake)
%% to reduce memory foot print of a connection.
-next_state_is_connection(State =
- #state{recv_during_renegotiation = true, socket_options =
- #socket_options{active = false}}) ->
+next_state_is_connection(_, State =
+ #state{recv_during_renegotiation = true, socket_options =
+ #socket_options{active = false}}) ->
passive_receive(State#state{recv_during_renegotiation = false,
premaster_secret = undefined,
public_key_info = undefined,
tls_handshake_hashes = {<<>>, <<>>}}, connection);
-next_state_is_connection(State0) ->
+next_state_is_connection(StateName, State0) ->
{Record, State} = next_record_if_active(State0),
- next_state(connection, Record, State#state{premaster_secret = undefined,
+ next_state(StateName, connection, Record, State#state{premaster_secret = undefined,
public_key_info = undefined,
tls_handshake_hashes = {<<>>, <<>>}}).
@@ -2184,16 +2178,14 @@ handle_alert(#alert{level = ?FATAL} = Alert, StateName,
{stop, normal, State};
handle_alert(#alert{level = ?WARNING, description = ?CLOSE_NOTIFY} = Alert,
- StateName, #state{from = From, role = Role,
- user_application = {_Mon, Pid}, socket_options = Opts} = State) ->
- alert_user(StateName, Opts, Pid, From, Alert, Role),
+ StateName, State) ->
+ handle_normal_shutdown(Alert, StateName, State),
{stop, normal, State};
handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
- #state{log_alert = Log, renegotiation = {true, internal}, from = From,
- role = Role} = State) ->
+ #state{log_alert = Log, renegotiation = {true, internal}} = State) ->
log_alert(Log, StateName, Alert),
- alert_user(From, Alert, Role),
+ handle_normal_shutdown(Alert, StateName, State),
{stop, normal, State};
handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert, StateName,
@@ -2201,13 +2193,13 @@ handle_alert(#alert{level = ?WARNING, description = ?NO_RENEGOTIATION} = Alert,
log_alert(Log, StateName, Alert),
gen_fsm:reply(From, {error, renegotiation_rejected}),
{Record, State} = next_record(State0),
- next_state(connection, Record, State);
+ next_state(StateName, connection, Record, State);
handle_alert(#alert{level = ?WARNING, description = ?USER_CANCELED} = Alert, StateName,
#state{log_alert = Log} = State0) ->
log_alert(Log, StateName, Alert),
{Record, State} = next_record(State0),
- next_state(StateName, Record, State).
+ next_state(StateName, StateName, Record, State).
alert_user(connection, Opts, Pid, From, Alert, Role) ->
alert_user(Opts#socket_options.active, Pid, From, Alert, Role);
@@ -2239,13 +2231,11 @@ log_alert(true, Info, Alert) ->
log_alert(false, _, _) ->
ok.
-handle_own_alert(Alert, Version, Info,
+handle_own_alert(Alert, Version, StateName,
#state{transport_cb = Transport,
socket = Socket,
- from = User,
- role = Role,
connection_states = ConnectionStates,
- log_alert = Log}) ->
+ log_alert = Log} = State) ->
try %% Try to tell the other side
{BinMsg, _} =
encode_alert(Alert, Version, ConnectionStates),
@@ -2255,12 +2245,20 @@ handle_own_alert(Alert, Version, Info,
ignore
end,
try %% Try to tell the local user
- log_alert(Log, Info, Alert),
- alert_user(User, Alert, Role)
+ log_alert(Log, StateName, Alert),
+ handle_normal_shutdown(Alert,StateName, State)
catch _:_ ->
ok
end.
+handle_normal_shutdown(Alert, _, #state{from = User, role = Role, renegotiation = {false, first}}) ->
+ alert_user(User, Alert, Role);
+
+handle_normal_shutdown(Alert, StateName, #state{socket_options = Opts,
+ user_application = {_Mon, Pid},
+ from = User, role = Role}) ->
+ alert_user(StateName, Opts, Pid, User, Alert, Role).
+
handle_unexpected_message(Msg, Info, #state{negotiated_version = Version} = State) ->
Alert = ?ALERT_REC(?FATAL,?UNEXPECTED_MESSAGE),
handle_own_alert(Alert, Version, {Info, Msg}, State),
@@ -2310,7 +2308,7 @@ renegotiate(#state{role = server,
{Record, State} = next_record(State0#state{connection_states =
ConnectionStates,
tls_handshake_hashes = Hs0}),
- next_state(hello, Record, State#state{allow_renegotiate = true}).
+ next_state(connection, hello, Record, State#state{allow_renegotiate = true}).
notify_senders(SendQueue) ->
lists:foreach(fun({From, _}) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 10:38:53 +0000