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-rw-r--r--lib/ssl/src/tls_record.erl144
1 files changed, 119 insertions, 25 deletions
diff --git a/lib/ssl/src/tls_record.erl b/lib/ssl/src/tls_record.erl
index 168b2c8fd3..1e266ed424 100644
--- a/lib/ssl/src/tls_record.erl
+++ b/lib/ssl/src/tls_record.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%
%%
@@ -40,8 +41,9 @@
-export([encode_plain_text/4]).
%% Protocol version handling
--export([protocol_version/1, lowest_protocol_version/2,
- highest_protocol_version/1, is_higher/2, supported_protocol_versions/0,
+-export([protocol_version/1, lowest_protocol_version/1, lowest_protocol_version/2,
+ highest_protocol_version/1, highest_protocol_version/2,
+ is_higher/2, supported_protocol_versions/0,
is_acceptable_version/1, is_acceptable_version/2]).
-export_type([tls_version/0, tls_atom_version/0]).
@@ -132,6 +134,23 @@ encode_plain_text(Type, Version, Data,
sequence_number = Seq,
compression_state=CompS0,
security_parameters=
+ #security_parameters{
+ cipher_type = ?AEAD,
+ compression_algorithm=CompAlg}
+ }= WriteState0} = ConnectionStates) ->
+ {Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
+ WriteState1 = WriteState0#connection_state{compression_state = CompS1},
+ AAD = calc_aad(Type, Version, WriteState1),
+ {CipherFragment, WriteState} = ssl_record:cipher_aead(Version, Comp, WriteState1, AAD),
+ CipherText = encode_tls_cipher_text(Type, Version, CipherFragment),
+ {CipherText, ConnectionStates#connection_states{current_write = WriteState#connection_state{sequence_number = Seq +1}}};
+
+encode_plain_text(Type, Version, Data,
+ #connection_states{current_write =
+ #connection_state{
+ sequence_number = Seq,
+ compression_state=CompS0,
+ security_parameters=
#security_parameters{compression_algorithm=CompAlg}
}= WriteState0} = ConnectionStates) ->
{Comp, CompS1} = ssl_record:compress(CompAlg, Data, CompS0),
@@ -154,14 +173,39 @@ decode_cipher_text(#ssl_tls{type = Type, version = Version,
compression_state = CompressionS0,
sequence_number = Seq,
security_parameters=
- #security_parameters{compression_algorithm = CompressAlg}
+ #security_parameters{
+ cipher_type = ?AEAD,
+ compression_algorithm=CompAlg}
+ } = ReadState0} = ConnnectionStates0, _) ->
+ AAD = calc_aad(Type, Version, ReadState0),
+ case ssl_record:decipher_aead(Version, CipherFragment, ReadState0, AAD) of
+ {PlainFragment, ReadState1} ->
+ {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
+ PlainFragment, CompressionS0),
+ ConnnectionStates = ConnnectionStates0#connection_states{
+ current_read = ReadState1#connection_state{
+ sequence_number = Seq + 1,
+ compression_state = CompressionS1}},
+ {CipherText#ssl_tls{fragment = Plain}, ConnnectionStates};
+ #alert{} = Alert ->
+ Alert
+ end;
+
+decode_cipher_text(#ssl_tls{type = Type, version = Version,
+ fragment = CipherFragment} = CipherText,
+ #connection_states{current_read =
+ #connection_state{
+ compression_state = CompressionS0,
+ sequence_number = Seq,
+ security_parameters=
+ #security_parameters{compression_algorithm=CompAlg}
} = ReadState0} = ConnnectionStates0, PaddingCheck) ->
case ssl_record:decipher(Version, CipherFragment, ReadState0, PaddingCheck) of
{PlainFragment, Mac, ReadState1} ->
MacHash = calc_mac_hash(Type, Version, PlainFragment, ReadState1),
case ssl_record:is_correct_mac(Mac, MacHash) of
true ->
- {Plain, CompressionS1} = ssl_record:uncompress(CompressAlg,
+ {Plain, CompressionS1} = ssl_record:uncompress(CompAlg,
PlainFragment, CompressionS0),
ConnnectionStates = ConnnectionStates0#connection_states{
current_read = ReadState1#connection_state{
@@ -214,6 +258,18 @@ lowest_protocol_version(Version = {M,_},
Version;
lowest_protocol_version(_,Version) ->
Version.
+
+%%--------------------------------------------------------------------
+-spec lowest_protocol_version([tls_version()]) -> tls_version().
+%%
+%% Description: Lowest protocol version present in a list
+%%--------------------------------------------------------------------
+lowest_protocol_version([]) ->
+ lowest_protocol_version();
+lowest_protocol_version(Versions) ->
+ [Ver | Vers] = Versions,
+ lowest_list_protocol_version(Ver, Vers).
+
%%--------------------------------------------------------------------
-spec highest_protocol_version([tls_version()]) -> tls_version().
%%
@@ -223,19 +279,29 @@ highest_protocol_version([]) ->
highest_protocol_version();
highest_protocol_version(Versions) ->
[Ver | Vers] = Versions,
- highest_protocol_version(Ver, Vers).
+ highest_list_protocol_version(Ver, Vers).
-highest_protocol_version(Version, []) ->
+%%--------------------------------------------------------------------
+-spec highest_protocol_version(tls_version(), tls_version()) -> tls_version().
+%%
+%% Description: Highest protocol version of two given versions
+%%--------------------------------------------------------------------
+highest_protocol_version(Version = {M, N}, {M, O}) when N > O ->
+ Version;
+highest_protocol_version({M, _},
+ Version = {M, _}) ->
Version;
-highest_protocol_version(Version = {N, M}, [{N, O} | Rest]) when M > O ->
- highest_protocol_version(Version, Rest);
-highest_protocol_version({M, _}, [Version = {M, _} | Rest]) ->
- highest_protocol_version(Version, Rest);
-highest_protocol_version(Version = {M,_}, [{N,_} | Rest]) when M > N ->
- highest_protocol_version(Version, Rest);
-highest_protocol_version(_, [Version | Rest]) ->
- highest_protocol_version(Version, Rest).
+highest_protocol_version(Version = {M,_},
+ {N, _}) when M > N ->
+ Version;
+highest_protocol_version(_,Version) ->
+ Version.
+%%--------------------------------------------------------------------
+-spec is_higher(V1 :: tls_version(), V2::tls_version()) -> tls_version().
+%%
+%% Description: Is V1 > V2
+%%--------------------------------------------------------------------
is_higher({M, N}, {M, O}) when N > O ->
true;
is_higher({M, _}, {N, _}) when M > N ->
@@ -276,8 +342,17 @@ supported_protocol_versions([]) ->
Vsns;
supported_protocol_versions([_|_] = Vsns) ->
- Vsns.
-
+ case sufficient_tlsv1_2_crypto_support() of
+ true ->
+ Vsns;
+ false ->
+ case Vsns -- ['tlsv1.2'] of
+ [] ->
+ ?MIN_SUPPORTED_VERSIONS;
+ NewVsns ->
+ NewVsns
+ end
+ end.
%%--------------------------------------------------------------------
%%
%% Description: ssl version 2 is not acceptable security risks are too big.
@@ -300,6 +375,17 @@ is_acceptable_version(_,_) ->
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
+
+lowest_list_protocol_version(Ver, []) ->
+ Ver;
+lowest_list_protocol_version(Ver1, [Ver2 | Rest]) ->
+ lowest_list_protocol_version(lowest_protocol_version(Ver1, Ver2), Rest).
+
+highest_list_protocol_version(Ver, []) ->
+ Ver;
+highest_list_protocol_version(Ver1, [Ver2 | Rest]) ->
+ highest_list_protocol_version(highest_protocol_version(Ver1, Ver2), Rest).
+
encode_tls_cipher_text(Type, {MajVer, MinVer}, Fragment) ->
Length = erlang:iolist_size(Fragment),
[<<?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer), ?UINT16(Length)>>, Fragment].
@@ -318,6 +404,10 @@ mac_hash({3, N} = Version, MacAlg, MacSecret, SeqNo, Type, Length, Fragment)
highest_protocol_version() ->
highest_protocol_version(supported_protocol_versions()).
+lowest_protocol_version() ->
+ lowest_protocol_version(supported_protocol_versions()).
+
+
sufficient_tlsv1_2_crypto_support() ->
CryptoSupport = crypto:supports(),
proplists:get_bool(sha256, proplists:get_value(hashs, CryptoSupport)).
@@ -331,3 +421,7 @@ calc_mac_hash(Type, Version,
mac_hash(Version, SecPars#security_parameters.mac_algorithm,
MacSecret, SeqNo, Type,
Length, PlainFragment).
+
+calc_aad(Type, {MajVer, MinVer},
+ #connection_state{sequence_number = SeqNo}) ->
+ <<SeqNo:64/integer, ?BYTE(Type), ?BYTE(MajVer), ?BYTE(MinVer)>>.
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 21:06:24 +0000