diff options
Diffstat (limited to 'lib/ssl/src/tls_handshake.erl')
| -rw-r--r-- | lib/ssl/src/tls_handshake.erl | 48 |
1 files changed, 27 insertions, 21 deletions
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl index 871eb970eb..397f963ad5 100644 --- a/lib/ssl/src/tls_handshake.erl +++ b/lib/ssl/src/tls_handshake.erl @@ -33,7 +33,7 @@ -include_lib("public_key/include/public_key.hrl"). -export([client_hello/8, hello/4, - get_tls_handshake/3, encode_handshake/2, decode_handshake/3]). + get_tls_handshake/4, encode_handshake/2, decode_handshake/4]). -type tls_handshake() :: #client_hello{} | ssl_handshake:ssl_handshake(). @@ -133,17 +133,17 @@ encode_handshake(Package, Version) -> [MsgType, ?uint24(Len), Bin]. %%-------------------------------------------------------------------- --spec get_tls_handshake(tls_record:tls_version(), binary(), binary() | iolist()) -> +-spec get_tls_handshake(tls_record:tls_version(), binary(), binary() | iolist(), #ssl_options{}) -> {[tls_handshake()], binary()}. %% %% Description: Given buffered and new data from ssl_record, collects %% and returns it as a list of handshake messages, also returns leftover %% data. %%-------------------------------------------------------------------- -get_tls_handshake(Version, Data, <<>>) -> - get_tls_handshake_aux(Version, Data, []); -get_tls_handshake(Version, Data, Buffer) -> - get_tls_handshake_aux(Version, list_to_binary([Buffer, Data]), []). +get_tls_handshake(Version, Data, <<>>, Options) -> + get_tls_handshake_aux(Version, Data, Options, []); +get_tls_handshake(Version, Data, Buffer, Options) -> + get_tls_handshake_aux(Version, list_to_binary([Buffer, Data]), Options, []). %%-------------------------------------------------------------------- %%% Internal functions @@ -184,24 +184,24 @@ handle_client_hello(Version, #client_hello{session_id = SugesstedId, end. get_tls_handshake_aux(Version, <<?BYTE(Type), ?UINT24(Length), - Body:Length/binary,Rest/binary>>, Acc) -> + Body:Length/binary,Rest/binary>>, #ssl_options{v2_hello_compatible = V2Hello} = Opts, Acc) -> Raw = <<?BYTE(Type), ?UINT24(Length), Body/binary>>, - Handshake = decode_handshake(Version, Type, Body), - get_tls_handshake_aux(Version, Rest, [{Handshake,Raw} | Acc]); -get_tls_handshake_aux(_Version, Data, Acc) -> + Handshake = decode_handshake(Version, Type, Body, V2Hello), + get_tls_handshake_aux(Version, Rest, Opts, [{Handshake,Raw} | Acc]); +get_tls_handshake_aux(_Version, Data, _, Acc) -> {lists:reverse(Acc), Data}. -decode_handshake(_, ?HELLO_REQUEST, <<>>) -> +decode_handshake(_, ?HELLO_REQUEST, <<>>, _) -> #hello_request{}; %% Client hello v2. %% The server must be able to receive such messages, from clients that %% are willing to use ssl v3 or higher, but have ssl v2 compatibility. decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), - ?UINT16(CSLength), ?UINT16(0), - ?UINT16(CDLength), - CipherSuites:CSLength/binary, - ChallengeData:CDLength/binary>>) -> + ?UINT16(CSLength), ?UINT16(0), + ?UINT16(CDLength), + CipherSuites:CSLength/binary, + ChallengeData:CDLength/binary>>, true) -> #client_hello{client_version = {Major, Minor}, random = ssl_v2:client_random(ChallengeData, CDLength), session_id = 0, @@ -209,12 +209,18 @@ decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), compression_methods = [?NULL], extensions = #hello_extensions{} }; +decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(_), ?BYTE(_), + ?UINT16(CSLength), ?UINT16(0), + ?UINT16(CDLength), + _CipherSuites:CSLength/binary, + _ChallengeData:CDLength/binary>>, false) -> + throw(?ALERT_REC(?FATAL, ?PROTOCOL_VERSION, ssl_v2_client_hello_no_supported)); decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary, - ?BYTE(SID_length), Session_ID:SID_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, + ?UINT16(Cs_length), CipherSuites:Cs_length/binary, + ?BYTE(Cm_length), Comp_methods:Cm_length/binary, + Extensions/binary>>, _) -> + DecodedExtensions = ssl_handshake:decode_hello_extensions({client, Extensions}), #client_hello{ @@ -226,7 +232,7 @@ decode_handshake(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:3 extensions = DecodedExtensions }; -decode_handshake(Version, Tag, Msg) -> +decode_handshake(Version, Tag, Msg, _) -> ssl_handshake:decode_handshake(Version, Tag, Msg). enc_handshake(#hello_request{}, _Version) -> |