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-rw-r--r--lib/ssl/src/tls_connection.erl153
1 files changed, 123 insertions, 30 deletions
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 77d3aa7889..3093508f61 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -3,16 +3,17 @@
%%
%% Copyright Ericsson AB 2007-2015. 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
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -53,7 +54,7 @@
%% 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/6, alert_user/9
+ close/5, alert_user/6, alert_user/9
]).
%% Data handling
@@ -188,19 +189,27 @@ hello(Hello = #client_hello{client_version = ClientVersion,
renegotiation = {Renegotiation, _},
session_cache = Cache,
session_cache_cb = CacheCb,
+ negotiated_protocol = CurrentProtocol,
ssl_options = SslOpts}) ->
case tls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
ConnectionStates0, Cert}, Renegotiation) of
+ #alert{} = Alert ->
+ handle_own_alert(Alert, ClientVersion, hello, State);
{Version, {Type, Session},
- ConnectionStates, ServerHelloExt} ->
+ ConnectionStates, Protocol0, ServerHelloExt} ->
+
+ Protocol = case Protocol0 of
+ undefined -> CurrentProtocol;
+ _ -> Protocol0
+ end,
+
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,
session = Session,
- client_ecc = {EllipticCurves, EcPointFormats}}, ?MODULE);
- #alert{} = Alert ->
- handle_own_alert(Alert, ClientVersion, hello, State)
+ client_ecc = {EllipticCurves, EcPointFormats},
+ negotiated_protocol = Protocol}, ?MODULE)
end;
hello(Hello,
#state{connection_states = ConnectionStates0,
@@ -211,9 +220,9 @@ hello(Hello,
case tls_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
#alert{} = Alert ->
handle_own_alert(Alert, ReqVersion, hello, State);
- {Version, NewId, ConnectionStates, NextProtocol} ->
+ {Version, NewId, ConnectionStates, ProtoExt, Protocol} ->
ssl_connection:handle_session(Hello,
- Version, NewId, ConnectionStates, NextProtocol, State)
+ Version, NewId, ConnectionStates, ProtoExt, Protocol, State)
end;
hello(Msg, State) ->
@@ -384,12 +393,30 @@ initial_state(Role, Host, Port, Socket, {SSLOptions, SocketOptions, Tracker}, Us
user_data_buffer = <<>>,
session_cache_cb = SessionCacheCb,
renegotiation = {false, first},
+ allow_renegotiate = SSLOptions#ssl_options.client_renegotiation,
start_or_recv_from = undefined,
send_queue = queue:new(),
protocol_cb = ?MODULE,
tracker = Tracker
}.
+
+update_ssl_options_from_sni(OrigSSLOptions, SNIHostname) ->
+ SSLOption =
+ case OrigSSLOptions#ssl_options.sni_fun of
+ undefined ->
+ proplists:get_value(SNIHostname,
+ OrigSSLOptions#ssl_options.sni_hosts);
+ SNIFun ->
+ SNIFun(SNIHostname)
+ end,
+ case SSLOption of
+ undefined ->
+ undefined;
+ _ ->
+ ssl:handle_options(SSLOption, OrigSSLOptions)
+ end.
+
next_state(Current,_, #alert{} = Alert, #state{negotiated_version = Version} = State) ->
handle_own_alert(Alert, Version, Current, State);
@@ -418,15 +445,17 @@ next_state(Current, Next, #ssl_tls{type = ?HANDSHAKE, fragment = Data},
%% This message should not be included in handshake
%% message hashes. Already in negotiation so it will be ignored!
?MODULE:SName(Packet, State);
- ({#client_hello{} = Packet, Raw}, {next_state, connection = SName, State}) ->
+ ({#client_hello{} = Packet, Raw}, {next_state, connection = SName, HState0}) ->
+ HState = handle_sni_extension(Packet, HState0),
Version = Packet#client_hello.client_version,
Hs0 = ssl_handshake:init_handshake_history(),
Hs1 = ssl_handshake:update_handshake_history(Hs0, Raw),
- ?MODULE:SName(Packet, State#state{tls_handshake_history=Hs1,
- renegotiation = {true, peer}});
- ({Packet, Raw}, {next_state, SName, State = #state{tls_handshake_history=Hs0}}) ->
+ ?MODULE:SName(Packet, HState#state{tls_handshake_history=Hs1,
+ renegotiation = {true, peer}});
+ ({Packet, Raw}, {next_state, SName, HState0 = #state{tls_handshake_history=Hs0}}) ->
+ HState = handle_sni_extension(Packet, HState0),
Hs1 = ssl_handshake:update_handshake_history(Hs0, Raw),
- ?MODULE:SName(Packet, State#state{tls_handshake_history=Hs1});
+ ?MODULE:SName(Packet, HState#state{tls_handshake_history=Hs1});
(_, StopState) -> StopState
end,
try
@@ -895,8 +924,7 @@ handle_own_alert(Alert, Version, StateName,
try %% Try to tell the other side
{BinMsg, _} =
ssl_alert:encode(Alert, Version, ConnectionStates),
- Transport:send(Socket, BinMsg),
- workaround_transport_delivery_problems(Socket, Transport)
+ Transport:send(Socket, BinMsg)
catch _:_ -> %% Can crash if we are in a uninitialized state
ignore
end,
@@ -948,21 +976,57 @@ invalidate_session(client, Host, Port, Session) ->
invalidate_session(server, _, Port, Session) ->
ssl_manager:invalidate_session(Port, Session).
-workaround_transport_delivery_problems(Socket, gen_tcp = Transport) ->
+%% User downgrades connection
+%% When downgrading an TLS connection to a transport connection
+%% we must recive the close message before releasing the
+%% transport socket.
+close({close, {Pid, Timeout}}, Socket, Transport, ConnectionStates, Check) when is_pid(Pid) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}, {packet, ssl_tls}]),
+ case Transport:recv(Socket, 0, Timeout) of
+ {ok, {ssl_tls, Socket, ?ALERT, Version, Fragment}} ->
+ case tls_record:decode_cipher_text(#ssl_tls{type = ?ALERT,
+ version = Version,
+ fragment = Fragment
+ }, ConnectionStates, Check) of
+ {#ssl_tls{fragment = Plain}, _} ->
+ [Alert| _] = decode_alerts(Plain),
+ downgrade(Alert, Transport, Socket, Pid)
+ end;
+ {error, timeout} ->
+ {error, timeout};
+ _ ->
+ {error, no_tls_close}
+ end;
+%% User closes or recursive call!
+close({close, Timeout}, Socket, Transport = gen_tcp, _,_) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}]),
+ Transport:shutdown(Socket, write),
+ _ = Transport:recv(Socket, 0, Timeout),
+ ok;
+%% Peer closed socket
+close({shutdown, transport_closed}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
+ close({close, 0}, Socket, Transport, ConnectionStates, Check);
+%% We generate fatal alert
+close({shutdown, own_alert}, Socket, Transport = gen_tcp, ConnectionStates, Check) ->
%% Standard trick to try to make sure all
%% data sent to the tcp port is really delivered to the
%% peer application before tcp port is closed so that the peer will
%% get the correct TLS alert message and not only a transport close.
- ssl_socket:setopts(Transport, Socket, [{active, false}]),
- Transport:shutdown(Socket, write),
- %% Will return when other side has closed or after 30 s
+ %% Will return when other side has closed or after timout millisec
%% e.g. we do not want to hang if something goes wrong
%% with the network but we want to maximise the odds that
%% peer application gets all data sent on the tcp connection.
- Transport:recv(Socket, 0, 30000);
-workaround_transport_delivery_problems(Socket, Transport) ->
+ close({close, ?DEFAULT_TIMEOUT}, Socket, Transport, ConnectionStates, Check);
+%% Other
+close(_, Socket, Transport, _,_) ->
Transport:close(Socket).
-
+downgrade(#alert{description = ?CLOSE_NOTIFY}, Transport, Socket, Pid) ->
+ ssl_socket:setopts(Transport, Socket, [{active, false}, {packet, 0}, {mode, binary}]),
+ Transport:controlling_process(Socket, Pid),
+ {ok, Socket};
+downgrade(_, _,_,_) ->
+ {error, no_tls_close}.
+
convert_state(#state{ssl_options = Options} = State, up, "5.3.5", "5.3.6") ->
State#state{ssl_options = convert_options_partial_chain(Options, up)};
convert_state(#state{ssl_options = Options} = State, down, "5.3.6", "5.3.5") ->
@@ -973,3 +1037,32 @@ convert_options_partial_chain(Options, up) ->
list_to_tuple(Head ++ [{partial_chain, fun(_) -> unknown_ca end}] ++ Tail);
convert_options_partial_chain(Options, down) ->
list_to_tuple(proplists:delete(partial_chain, tuple_to_list(Options))).
+
+handle_sni_extension(#client_hello{extensions = HelloExtensions}, State0) ->
+ case HelloExtensions#hello_extensions.sni of
+ undefined ->
+ State0;
+ #sni{hostname = Hostname} ->
+ NewOptions = update_ssl_options_from_sni(State0#state.ssl_options, Hostname),
+ case NewOptions of
+ undefined ->
+ State0;
+ _ ->
+ {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, CRLDbHandle, OwnCert, Key, DHParams} =
+ ssl_config:init(NewOptions, State0#state.role),
+ State0#state{
+ session = State0#state.session#session{own_certificate = OwnCert},
+ file_ref_db = FileRefHandle,
+ cert_db_ref = Ref,
+ cert_db = CertDbHandle,
+ crl_db = CRLDbHandle,
+ session_cache = CacheHandle,
+ private_key = Key,
+ diffie_hellman_params = DHParams,
+ ssl_options = NewOptions,
+ sni_hostname = Hostname
+ }
+ end
+ end;
+handle_sni_extension(_, State0) ->
+ State0.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 11:10:28 +0000