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-rw-r--r--lib/ssl/src/dtls_handshake.erl402
1 files changed, 220 insertions, 182 deletions
diff --git a/lib/ssl/src/dtls_handshake.erl b/lib/ssl/src/dtls_handshake.erl
index 5db2434753..31d525b295 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2014. 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
@@ -20,11 +20,15 @@
-include("dtls_handshake.hrl").
-include("dtls_record.hrl").
-include("ssl_internal.hrl").
+-include("ssl_alert.hrl").
--export([client_hello/8, client_hello/9, hello/3,
+-export([client_hello/8, client_hello/9, hello/4,
get_dtls_handshake/2,
- dtls_handshake_new_flight/1, dtls_handshake_new_epoch/1,
- encode_handshake/4]).
+ %%dtls_handshake_new_flight/1, dtls_handshake_new_epoch/1,
+ encode_handshake/3]).
+
+-type dtls_handshake() :: #client_hello{} | #hello_verify_request{} |
+ ssl_handshake:ssl_handshake().
%%====================================================================
%% Internal application API
@@ -54,12 +58,12 @@ client_hello(Host, Port, Cookie, ConnectionStates,
ciphers = UserSuites
} = SslOpts,
Cache, CacheCb, Renegotiation, OwnCert) ->
- Version = dtls_record:highest_protocol_version(Versions),
+ Version = dtls_record:highest_protocol_version(Versions),
Pending = ssl_record:pending_connection_state(ConnectionStates, read),
SecParams = Pending#connection_state.security_parameters,
CipherSuites = ssl_handshake:available_suites(UserSuites, Version),
- Extensions = ssl_handshake:client_hello_extensions(Host, Version, CipherSuites,
+ Extensions = ssl_handshake:client_hello_extensions(Host, dtls_v1:corresponding_tls_version(Version), CipherSuites,
SslOpts, ConnectionStates, Renegotiation),
Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),
@@ -73,163 +77,197 @@ client_hello(Host, Port, Cookie, ConnectionStates,
extensions = Extensions
}.
-hello(Address, Port,
- #ssl_tls{epoch = _Epoch, record_seq = _Seq,
- version = Version} = Record) ->
- {[{Hello, _}], _, _} =
- get_dtls_handshake(Record,
- dtls_handshake_new_flight(undefined)),
- #client_hello{client_version = {Major, Minor},
- random = Random,
- session_id = SessionId,
- cipher_suites = CipherSuites,
- compression_methods = CompressionMethods} = Hello,
- CookieData = [address_to_bin(Address, Port),
- <<?BYTE(Major), ?BYTE(Minor)>>,
- Random, SessionId, CipherSuites, CompressionMethods],
- Cookie = crypto:hmac(sha, <<"secret">>, CookieData),
-
- case Hello of
- #client_hello{cookie = Cookie} ->
- accept;
- _ ->
- %% generate HelloVerifyRequest
- HelloVerifyRequest = encode_handshake(#hello_verify_request{protocol_version = Version,
- cookie = Cookie},
- Version, 0, 1400),
- {reply, HelloVerifyRequest}
- end.
+hello(#server_hello{server_version = Version, random = Random,
+ cipher_suite = CipherSuite,
+ compression_method = Compression,
+ session_id = SessionId, extensions = HelloExt},
+ #ssl_options{versions = SupportedVersions} = SslOpt,
+ ConnectionStates0, Renegotiation) ->
+ case dtls_record:is_acceptable_version(Version, SupportedVersions) of
+ true ->
+ handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
+ Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation);
+ false ->
+ ?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
+ end;
-%%--------------------------------------------------------------------
-encode_handshake(Package, Version, MsgSeq, Mss) ->
- {MsgType, Bin} = enc_hs(Package, Version),
+hello(#client_hello{client_version = ClientVersion}, _Options, {_,_,_,_,ConnectionStates,_}, _Renegotiation) ->
+ %% Return correct typ to make dialyzer happy until we have time to make the real imp.
+ {ClientVersion, {new, #session{}}, ConnectionStates, #hello_extensions{}}.
+
+%% hello(Address, Port,
+%% #ssl_tls{epoch = _Epoch, sequence_number = _Seq,
+%% version = Version} = Record) ->
+%% case get_dtls_handshake(Record,
+%% dtls_handshake_new_flight(undefined)) of
+%% {[Hello | _], _} ->
+%% hello(Address, Port, Version, Hello);
+%% {retransmit, HandshakeState} ->
+%% {retransmit, HandshakeState}
+%% end.
+
+%% hello(Address, Port, Version, Hello) ->
+%% #client_hello{client_version = {Major, Minor},
+%% random = Random,
+%% session_id = SessionId,
+%% cipher_suites = CipherSuites,
+%% compression_methods = CompressionMethods} = Hello,
+%% CookieData = [address_to_bin(Address, Port),
+%% <<?BYTE(Major), ?BYTE(Minor)>>,
+%% Random, SessionId, CipherSuites, CompressionMethods],
+%% Cookie = crypto:hmac(sha, <<"secret">>, CookieData),
+
+%% case Hello of
+%% #client_hello{cookie = Cookie} ->
+%% accept;
+%% _ ->
+%% %% generate HelloVerifyRequest
+%% HelloVerifyRequest = enc_hs(#hello_verify_request{protocol_version = Version,
+%% cookie = Cookie},
+%% Version, 0, 1400),
+%% {reply, HelloVerifyRequest}
+%% end.
+
+%% %%--------------------------------------------------------------------
+encode_handshake(Handshake, Version, MsgSeq) ->
+ {MsgType, Bin} = enc_handshake(Handshake, Version),
Len = byte_size(Bin),
- HsHistory = [MsgType, ?uint24(Len), ?uint16(MsgSeq), ?uint24(0), ?uint24(Len), Bin],
- BinMsg = dtls_split_handshake(Mss, MsgType, Len, MsgSeq, Bin, 0, []),
- {HsHistory, BinMsg}.
+ EncHandshake = [MsgType, ?uint24(Len), ?uint16(MsgSeq), ?uint24(0), ?uint24(Len), Bin],
+ FragmentedHandshake = dtls_fragment(erlang:iolist_size(EncHandshake), MsgType, Len, MsgSeq, Bin, 0, []),
+ {EncHandshake, FragmentedHandshake}.
-%--------------------------------------------------------------------
+%%--------------------------------------------------------------------
-spec get_dtls_handshake(#ssl_tls{}, #dtls_hs_state{} | binary()) ->
- {[dtls_handshake()], #dtls_hs_state{}} | {retransmit, #dtls_hs_state{}}.
-%
-% Description: Given a DTLS state and new data from ssl_record, collects
-% and returns it as a list of handshake messages, also returns a new
-% DTLS state
-%--------------------------------------------------------------------
-% get_dtls_handshake(Record, <<>>) ->
-% get_dtls_handshake_aux(Record, dtls_hs_state_init());
+ {[dtls_handshake()], #dtls_hs_state{}} | {retransmit, #dtls_hs_state{}}.
+%%
+%% Description: Given a DTLS state and new data from ssl_record, collects
+%% and returns it as a list of handshake messages, also returns a new
+%% DTLS state
+%%--------------------------------------------------------------------
+get_dtls_handshake(Record, <<>>) ->
+ get_dtls_handshake_aux(Record, #dtls_hs_state{}); %% Init handshake state!?
get_dtls_handshake(Record, HsState) ->
get_dtls_handshake_aux(Record, HsState).
-%--------------------------------------------------------------------
--spec dtls_handshake_new_epoch(#dtls_hs_state{}) -> #dtls_hs_state{}.
-%
-% Description: Reset the DTLS decoder state for a new Epoch
-%--------------------------------------------------------------------
-% dtls_handshake_new_epoch(<<>>) ->
-% dtls_hs_state_init();
-dtls_handshake_new_epoch(HsState) ->
- HsState#dtls_hs_state{highest_record_seq = 0,
- starting_read_seq = HsState#dtls_hs_state.current_read_seq,
- fragments = gb_trees:empty(), completed = []}.
-
-%--------------------------------------------------------------------
--spec dtls_handshake_new_flight(integer() | undefined) -> #dtls_hs_state{}.
-%
-% Description: Init the DTLS decoder state for a new Flight
-dtls_handshake_new_flight(ExpectedReadReq) ->
- #dtls_hs_state{current_read_seq = ExpectedReadReq,
- highest_record_seq = 0,
- starting_read_seq = 0,
- fragments = gb_trees:empty(), completed = []}.
+%% %%--------------------------------------------------------------------
+%% -spec dtls_handshake_new_epoch(#dtls_hs_state{}) -> #dtls_hs_state{}.
+%% %%
+%% %% Description: Reset the DTLS decoder state for a new Epoch
+%% %%--------------------------------------------------------------------
+%% dtls_handshake_new_epoch(<<>>) ->
+%% dtls_hs_state_init();
+%% dtls_handshake_new_epoch(HsState) ->
+%% HsState#dtls_hs_state{highest_record_seq = 0,
+%% starting_read_seq = HsState#dtls_hs_state.current_read_seq,
+%% fragments = gb_trees:empty(), completed = []}.
+
+%% %--------------------------------------------------------------------
+%% -spec dtls_handshake_new_flight(integer() | undefined) -> #dtls_hs_state{}.
+%% %
+%% % Description: Init the DTLS decoder state for a new Flight
+%% dtls_handshake_new_flight(ExpectedReadReq) ->
+%% #dtls_hs_state{current_read_seq = ExpectedReadReq,
+%% highest_record_seq = 0,
+%% starting_read_seq = 0,
+%% fragments = gb_trees:empty(), completed = []}.
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
+handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
+ Compression, HelloExt, SslOpt, ConnectionStates0, Renegotiation) ->
+ case ssl_handshake:handle_server_hello_extensions(dtls_record, Random, CipherSuite,
+ Compression, HelloExt, Version,
+ SslOpt, ConnectionStates0, Renegotiation) of
+ #alert{} = Alert ->
+ Alert;
+ {ConnectionStates, Protocol} ->
+ {Version, SessionId, ConnectionStates, Protocol}
+ end.
-dtls_split_handshake(Mss, MsgType, Len, MsgSeq, Bin, Offset, Acc)
+dtls_fragment(Mss, MsgType, Len, MsgSeq, Bin, Offset, Acc)
when byte_size(Bin) + 12 < Mss ->
FragmentLen = byte_size(Bin),
BinMsg = [MsgType, ?uint24(Len), ?uint16(MsgSeq), ?uint24(Offset), ?uint24(FragmentLen), Bin],
lists:reverse([BinMsg|Acc]);
-dtls_split_handshake(Mss, MsgType, Len, MsgSeq, Bin, Offset, Acc) ->
+dtls_fragment(Mss, MsgType, Len, MsgSeq, Bin, Offset, Acc) ->
FragmentLen = Mss - 12,
<<Fragment:FragmentLen/bytes, Rest/binary>> = Bin,
BinMsg = [MsgType, ?uint24(Len), ?uint16(MsgSeq), ?uint24(Offset), ?uint24(FragmentLen), Fragment],
- dtls_split_handshake(Mss, MsgType, Len, MsgSeq, Rest, Offset + FragmentLen, [BinMsg|Acc]).
+ dtls_fragment(Mss, MsgType, Len, MsgSeq, Rest, Offset + FragmentLen, [BinMsg|Acc]).
get_dtls_handshake_aux(#ssl_tls{version = Version,
- record_seq = SeqNo,
- fragment = Data}, HsState) ->
+ sequence_number = SeqNo,
+ fragment = Data}, HsState) ->
get_dtls_handshake_aux(Version, SeqNo, Data, HsState).
get_dtls_handshake_aux(Version, SeqNo,
- <<?BYTE(Type), ?UINT24(Length),
- ?UINT16(MessageSeq),
- ?UINT24(FragmentOffset), ?UINT24(FragmentLength),
- Body:FragmentLength/binary, Rest/binary>>,
- HsState0) ->
+ <<?BYTE(Type), ?UINT24(Length),
+ ?UINT16(MessageSeq),
+ ?UINT24(FragmentOffset), ?UINT24(FragmentLength),
+ Body:FragmentLength/binary, Rest/binary>>,
+ HsState0) ->
case reassemble_dtls_fragment(SeqNo, Type, Length, MessageSeq,
- FragmentOffset, FragmentLength,
- Body, HsState0) of
- {retransmit, HsState1} ->
- case Rest of
- <<>> ->
- {retransmit, HsState1};
- _ ->
- get_dtls_handshake_aux(Version, SeqNo, Rest, HsState1)
- end;
- {HsState1, HighestSeqNo, MsgBody} ->
- HsState2 = dec_dtls_fragment(Version, HighestSeqNo, Type, Length, MessageSeq, MsgBody, HsState1),
- HsState3 = process_dtls_fragments(Version, HsState2),
- get_dtls_handshake_aux(Version, SeqNo, Rest, HsState3);
- HsState2 ->
- HsState3 = process_dtls_fragments(Version, HsState2),
- get_dtls_handshake_aux(Version, SeqNo, Rest, HsState3)
- end;
+ FragmentOffset, FragmentLength,
+ Body, HsState0) of
+ {retransmit, HsState1} ->
+ case Rest of
+ <<>> ->
+ {retransmit, HsState1};
+ _ ->
+ get_dtls_handshake_aux(Version, SeqNo, Rest, HsState1)
+ end;
+ {HsState1, HighestSeqNo, MsgBody} ->
+ HsState2 = dec_dtls_fragment(Version, HighestSeqNo, Type, Length, MessageSeq, MsgBody, HsState1),
+ HsState3 = process_dtls_fragments(Version, HsState2),
+ get_dtls_handshake_aux(Version, SeqNo, Rest, HsState3);
+ HsState2 ->
+ HsState3 = process_dtls_fragments(Version, HsState2),
+ get_dtls_handshake_aux(Version, SeqNo, Rest, HsState3)
+ end;
get_dtls_handshake_aux(_Version, _SeqNo, <<>>, HsState) ->
- {lists:reverse(HsState#dtls_hs_state.completed),
- HsState#dtls_hs_state{completed = []}}.
+ {lists:reverse(HsState#dtls_hs_state.completed),
+ HsState#dtls_hs_state{completed = []}}.
dec_dtls_fragment(Version, SeqNo, Type, Length, MessageSeq, MsgBody,
- HsState = #dtls_hs_state{highest_record_seq = HighestSeqNo, completed = Acc}) ->
+ HsState = #dtls_hs_state{highest_record_seq = HighestSeqNo, completed = Acc}) ->
Raw = <<?BYTE(Type), ?UINT24(Length), ?UINT16(MessageSeq), ?UINT24(0), ?UINT24(Length), MsgBody/binary>>,
H = decode_handshake(Version, Type, MsgBody),
HsState#dtls_hs_state{completed = [{H,Raw}|Acc], highest_record_seq = erlang:max(HighestSeqNo, SeqNo)}.
process_dtls_fragments(Version,
- HsState0 = #dtls_hs_state{current_read_seq = CurrentReadSeq,
- fragments = Fragments0}) ->
+ HsState0 = #dtls_hs_state{current_read_seq = CurrentReadSeq,
+ fragments = Fragments0}) ->
case gb_trees:is_empty(Fragments0) of
- true ->
- HsState0;
- _ ->
- case gb_trees:smallest(Fragments0) of
- {CurrentReadSeq, {SeqNo, Type, Length, CurrentReadSeq, {Length, [{0, Length}], MsgBody}}} ->
- HsState1 = dtls_hs_state_process_seq(HsState0),
- HsState2 = dec_dtls_fragment(Version, SeqNo, Type, Length, CurrentReadSeq, MsgBody, HsState1),
- process_dtls_fragments(Version, HsState2);
- _ ->
- HsState0
- end
- end.
+ true ->
+ HsState0;
+ _ ->
+ case gb_trees:smallest(Fragments0) of
+ {CurrentReadSeq, {SeqNo, Type, Length, CurrentReadSeq, {Length, [{0, Length}], MsgBody}}} ->
+ HsState1 = dtls_hs_state_process_seq(HsState0),
+ HsState2 = dec_dtls_fragment(Version, SeqNo, Type, Length, CurrentReadSeq, MsgBody, HsState1),
+ process_dtls_fragments(Version, HsState2);
+ _ ->
+ HsState0
+ end
+ end.
dtls_hs_state_process_seq(HsState0 = #dtls_hs_state{current_read_seq = CurrentReadSeq,
- fragments = Fragments0}) ->
+ fragments = Fragments0}) ->
Fragments1 = gb_trees:delete_any(CurrentReadSeq, Fragments0),
HsState0#dtls_hs_state{current_read_seq = CurrentReadSeq + 1,
- fragments = Fragments1}.
+ fragments = Fragments1}.
dtls_hs_state_add_fragment(MessageSeq, Fragment, HsState0 = #dtls_hs_state{fragments = Fragments0}) ->
Fragments1 = gb_trees:enter(MessageSeq, Fragment, Fragments0),
HsState0#dtls_hs_state{fragments = Fragments1}.
reassemble_dtls_fragment(SeqNo, Type, Length, MessageSeq, 0, Length,
- Body, HsState0 = #dtls_hs_state{current_read_seq = undefined})
+ Body, HsState0 = #dtls_hs_state{current_read_seq = undefined})
when Type == ?CLIENT_HELLO;
Type == ?SERVER_HELLO;
- Type == ?HELLO_VERIFY_REQUEST ->
+ Type == ?HELLO_VERIFY_REQUEST ->
%% First message, should be client hello
%% return the current message and set the next expected Sequence
%%
@@ -245,8 +283,8 @@ reassemble_dtls_fragment(_SeqNo, _Type, Length, _MessageSeq, _, Length,
HsState;
reassemble_dtls_fragment(SeqNo, _Type, Length, MessageSeq, 0, Length,
- Body, HsState0 =
- #dtls_hs_state{starting_read_seq = StartingReadSeq})
+ Body, HsState0 =
+ #dtls_hs_state{starting_read_seq = StartingReadSeq})
when MessageSeq < StartingReadSeq ->
%% this has to be the start of a new flight, let it through
%%
@@ -257,69 +295,69 @@ reassemble_dtls_fragment(SeqNo, _Type, Length, MessageSeq, 0, Length,
{HsState, SeqNo, Body};
reassemble_dtls_fragment(_SeqNo, _Type, Length, MessageSeq, 0, Length,
- _Body, HsState =
- #dtls_hs_state{current_read_seq = CurrentReadSeq})
+ _Body, HsState =
+ #dtls_hs_state{current_read_seq = CurrentReadSeq})
when MessageSeq < CurrentReadSeq ->
{retransmit, HsState};
reassemble_dtls_fragment(_SeqNo, _Type, Length, MessageSeq, 0, Length,
- _Body, HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
+ _Body, HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
when MessageSeq < CurrentReadSeq ->
HsState;
reassemble_dtls_fragment(SeqNo, _Type, Length, MessageSeq, 0, Length,
- Body, HsState0 = #dtls_hs_state{current_read_seq = MessageSeq}) ->
+ Body, HsState0 = #dtls_hs_state{current_read_seq = MessageSeq}) ->
%% Message fully contained and it's the current seq
HsState1 = dtls_hs_state_process_seq(HsState0),
{HsState1, SeqNo, Body};
reassemble_dtls_fragment(SeqNo, Type, Length, MessageSeq, 0, Length,
- Body, HsState) ->
+ Body, HsState) ->
%% Message fully contained and it's the NOT the current seq -> buffer
Fragment = {SeqNo, Type, Length, MessageSeq,
- dtls_fragment_init(Length, 0, Length, Body)},
+ dtls_fragment_init(Length, 0, Length, Body)},
dtls_hs_state_add_fragment(MessageSeq, Fragment, HsState);
reassemble_dtls_fragment(_SeqNo, _Type, Length, MessageSeq, FragmentOffset, FragmentLength,
- _Body,
- HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
+ _Body,
+ HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
when FragmentOffset + FragmentLength == Length andalso MessageSeq == (CurrentReadSeq - 1) ->
{retransmit, HsState};
reassemble_dtls_fragment(_SeqNo, _Type, _Length, MessageSeq, _FragmentOffset, _FragmentLength,
- _Body,
- HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
+ _Body,
+ HsState = #dtls_hs_state{current_read_seq = CurrentReadSeq})
when MessageSeq < CurrentReadSeq ->
HsState;
reassemble_dtls_fragment(SeqNo, Type, Length, MessageSeq,
- FragmentOffset, FragmentLength,
- Body,
- HsState = #dtls_hs_state{fragments = Fragments0}) ->
+ FragmentOffset, FragmentLength,
+ Body,
+ HsState = #dtls_hs_state{fragments = Fragments0}) ->
case gb_trees:lookup(MessageSeq, Fragments0) of
- {value, Fragment} ->
- dtls_fragment_reassemble(SeqNo, Type, Length, MessageSeq,
- FragmentOffset, FragmentLength,
- Body, Fragment, HsState);
- none ->
- dtls_fragment_start(SeqNo, Type, Length, MessageSeq,
- FragmentOffset, FragmentLength,
- Body, HsState)
+ {value, Fragment} ->
+ dtls_fragment_reassemble(SeqNo, Type, Length, MessageSeq,
+ FragmentOffset, FragmentLength,
+ Body, Fragment, HsState);
+ none ->
+ dtls_fragment_start(SeqNo, Type, Length, MessageSeq,
+ FragmentOffset, FragmentLength,
+ Body, HsState)
end.
dtls_fragment_start(SeqNo, Type, Length, MessageSeq,
- FragmentOffset, FragmentLength,
- Body, HsState = #dtls_hs_state{fragments = Fragments0}) ->
+ FragmentOffset, FragmentLength,
+ Body, HsState = #dtls_hs_state{fragments = Fragments0}) ->
Fragment = {SeqNo, Type, Length, MessageSeq,
- dtls_fragment_init(Length, FragmentOffset, FragmentLength, Body)},
- Fragments1 = gb_trees:insert(MessageSeq, Fragment, Fragments0),
+ dtls_fragment_init(Length, FragmentOffset, FragmentLength, Body)},
+ Fragments1 = gb_trees:insert(MessageSeq, Fragment, Fragments0),
HsState#dtls_hs_state{fragments = Fragments1}.
dtls_fragment_reassemble(SeqNo, Type, Length, MessageSeq,
FragmentOffset, FragmentLength,
- Body,
- {LastSeqNo, Type, Length, MessageSeq, FragBuffer0},
- HsState = #dtls_hs_state{fragments = Fragments0}) ->
+ Body,
+ {LastSeqNo, Type, Length, MessageSeq, FragBuffer0},
+ HsState = #dtls_hs_state{fragments = Fragments0}) ->
FragBuffer1 = dtls_fragment_add(FragBuffer0, FragmentOffset, FragmentLength, Body),
Fragment = {erlang:max(SeqNo, LastSeqNo), Type, Length, MessageSeq, FragBuffer1},
Fragments1 = gb_trees:enter(MessageSeq, Fragment, Fragments0),
@@ -328,8 +366,8 @@ dtls_fragment_reassemble(SeqNo, Type, Length, MessageSeq,
%% Type, Length or Seq mismatch, drop everything...
%% Note: the RFC is not clear on how to handle this...
dtls_fragment_reassemble(_SeqNo, _Type, _Length, MessageSeq,
- _FragmentOffset, _FragmentLength, _Body, _Fragment,
- HsState = #dtls_hs_state{fragments = Fragments0}) ->
+ _FragmentOffset, _FragmentLength, _Body, _Fragment,
+ HsState = #dtls_hs_state{fragments = Fragments0}) ->
Fragments1 = gb_trees:delete_any(MessageSeq, Fragments0),
HsState#dtls_hs_state{fragments = Fragments1}.
@@ -360,7 +398,7 @@ merge_fragment_list(Rest = [{HStart, _HEnd}|_], Frag = {_FStart, FEnd}, Acc)
lists:reverse(Acc) ++ [Frag|Rest];
merge_fragment_list([{HStart, HEnd}|Rest], _Frag = {FStart, FEnd}, Acc)
- when
+ when
FStart =< HEnd orelse FEnd >= HStart ->
Start = erlang:min(HStart, FStart),
End = erlang:max(HEnd, FEnd),
@@ -370,20 +408,20 @@ merge_fragment_list([{HStart, HEnd}|Rest], _Frag = {FStart, FEnd}, Acc)
add_fragment(List, {FragmentOffset, FragmentLength}) ->
merge_fragment_list(List, {FragmentOffset, FragmentOffset + FragmentLength}, []).
-enc_hs(#hello_verify_request{protocol_version = {Major, Minor},
- cookie = Cookie}, _Version) ->
- CookieLength = byte_size(Cookie),
+enc_handshake(#hello_verify_request{protocol_version = {Major, Minor},
+ cookie = Cookie}, _Version) ->
+ CookieLength = byte_size(Cookie),
{?HELLO_VERIFY_REQUEST, <<?BYTE(Major), ?BYTE(Minor),
- ?BYTE(CookieLength),
- Cookie/binary>>};
-
-enc_hs(#client_hello{client_version = {Major, Minor},
- random = Random,
- session_id = SessionID,
- cookie = Cookie,
- cipher_suites = CipherSuites,
- compression_methods = CompMethods,
- extensions = HelloExtensions}, Version) ->
+ ?BYTE(CookieLength),
+ Cookie/binary>>};
+
+enc_handshake(#client_hello{client_version = {Major, Minor},
+ random = Random,
+ session_id = SessionID,
+ cookie = Cookie,
+ cipher_suites = CipherSuites,
+ compression_methods = CompMethods,
+ extensions = HelloExtensions}, Version) ->
SIDLength = byte_size(SessionID),
BinCookie = enc_client_hello_cookie(Version, Cookie),
BinCompMethods = list_to_binary(CompMethods),
@@ -391,13 +429,13 @@ enc_hs(#client_hello{client_version = {Major, Minor},
BinCipherSuites = list_to_binary(CipherSuites),
CsLength = byte_size(BinCipherSuites),
ExtensionsBin = ssl_handshake:encode_hello_extensions(HelloExtensions),
-
+
{?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
- ?BYTE(SIDLength), SessionID/binary,
- BinCookie/binary,
- ?UINT16(CsLength), BinCipherSuites/binary,
- ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
-enc_hs(HandshakeMsg, Version) ->
+ ?BYTE(SIDLength), SessionID/binary,
+ BinCookie/binary,
+ ?UINT16(CsLength), BinCipherSuites/binary,
+ ?BYTE(CmLength), BinCompMethods/binary, ExtensionsBin/binary>>};
+enc_handshake(HandshakeMsg, Version) ->
ssl_handshake:encode_handshake(HandshakeMsg, Version).
enc_client_hello_cookie(_, <<>>) ->
@@ -407,26 +445,26 @@ enc_client_hello_cookie(_, Cookie) ->
<<?BYTE(CookieLength), Cookie/binary>>.
decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
- ?BYTE(SID_length), Session_ID:SID_length/binary,
- ?BYTE(Cookie_length), Cookie:Cookie_length/binary,
- ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
- ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
- Extensions/binary>>) ->
-
+ ?BYTE(SID_length), Session_ID:SID_length/binary,
+ ?BYTE(Cookie_length), Cookie:Cookie_length/binary,
+ ?UINT16(Cs_length), CipherSuites:Cs_length/binary,
+ ?BYTE(Cm_length), Comp_methods:Cm_length/binary,
+ Extensions/binary>>) ->
+
DecodedExtensions = ssl_handshake:decode_hello_extensions(Extensions),
-
+
#client_hello{
client_version = {Major,Minor},
random = Random,
- session_id = Session_ID,
+ session_id = Session_ID,
cookie = Cookie,
cipher_suites = ssl_handshake:decode_suites('2_bytes', CipherSuites),
compression_methods = Comp_methods,
extensions = DecodedExtensions
- };
+ };
decode_handshake(_Version, ?HELLO_VERIFY_REQUEST, <<?BYTE(Major), ?BYTE(Minor),
- ?BYTE(CookieLength), Cookie:CookieLength/binary>>) ->
+ ?BYTE(CookieLength), Cookie:CookieLength/binary>>) ->
#hello_verify_request{
protocol_version = {Major,Minor},
@@ -434,7 +472,7 @@ decode_handshake(_Version, ?HELLO_VERIFY_REQUEST, <<?BYTE(Major), ?BYTE(Minor),
decode_handshake(Version, Tag, Msg) ->
ssl_handshake:decode_handshake(Version, Tag, Msg).
-address_to_bin({A,B,C,D}, Port) ->
- <<0:80,16#ffff:16,A,B,C,D,Port:16>>;
-address_to_bin({A,B,C,D,E,F,G,H}, Port) ->
- <<A:16,B:16,C:16,D:16,E:16,F:16,G:16,H:16,Port:16>>.
+%% address_to_bin({A,B,C,D}, Port) ->
+%% <<0:80,16#ffff:16,A,B,C,D,Port:16>>;
+%% address_to_bin({A,B,C,D,E,F,G,H}, Port) ->
+%% <<A:16,B:16,C:16,D:16,E:16,F:16,G:16,H:16,Port:16>>.