diff options
Diffstat (limited to 'lib/ssl/src/ssl_handshake.erl')
| -rw-r--r-- | lib/ssl/src/ssl_handshake.erl | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl index b18452a8f2..e1fd6970cc 100644 --- a/lib/ssl/src/ssl_handshake.erl +++ b/lib/ssl/src/ssl_handshake.erl @@ -53,7 +53,7 @@ select_session/10, supported_ecc/1]). %% Extensions handling --export([client_hello_extensions/5, +-export([client_hello_extensions/6, handle_client_hello_extensions/8, %% Returns server hello extensions handle_server_hello_extensions/9, select_curve/2 ]). @@ -85,7 +85,7 @@ hello_request() -> server_hello_done() -> #server_hello_done{}. -client_hello_extensions(Version, CipherSuites, SslOpts, ConnectionStates, Renegotiation) -> +client_hello_extensions(Host, Version, CipherSuites, SslOpts, ConnectionStates, Renegotiation) -> {EcPointFormats, EllipticCurves} = case advertises_ec_ciphers(lists:map(fun ssl_cipher:suite_definition/1, CipherSuites)) of true -> @@ -104,7 +104,8 @@ client_hello_extensions(Version, CipherSuites, SslOpts, ConnectionStates, Renego elliptic_curves = EllipticCurves, next_protocol_negotiation = encode_client_protocol_negotiation(SslOpts#ssl_options.next_protocol_selector, - Renegotiation)}. + Renegotiation), + sni = sni(Host)}. %%-------------------------------------------------------------------- -spec certificate(der_cert(), db_handle(), certdb_ref(), client | server) -> #certificate{} | #alert{}. @@ -641,7 +642,19 @@ encode_hello_extensions([#hash_sign_algos{hash_sign_algos = HashSignAlgos} | Res ListLen = byte_size(SignAlgoList), Len = ListLen + 2, encode_hello_extensions(Rest, <<?UINT16(?SIGNATURE_ALGORITHMS_EXT), - ?UINT16(Len), ?UINT16(ListLen), SignAlgoList/binary, Acc/binary>>). + ?UINT16(Len), ?UINT16(ListLen), SignAlgoList/binary, Acc/binary>>); +encode_hello_extensions([#sni{hostname = Hostname} | Rest], Acc) -> + HostLen = length(Hostname), + HostnameBin = list_to_binary(Hostname), + % Hostname type (1 byte) + Hostname length (2 bytes) + Hostname (HostLen bytes) + ServerNameLength = 1 + 2 + HostLen, + % ServerNameListSize (2 bytes) + ServerNameLength + ExtLength = 2 + ServerNameLength, + encode_hello_extensions(Rest, <<?UINT16(?SNI_EXT), ?UINT16(ExtLength), + ?UINT16(ServerNameLength), + ?BYTE(?SNI_NAMETYPE_HOST_NAME), + ?UINT16(HostLen), HostnameBin/binary, + Acc/binary>>). enc_server_key_exchange(Version, Params, {HashAlgo, SignAlgo}, ClientRandom, ServerRandom, PrivateKey) -> @@ -1081,9 +1094,10 @@ hello_extensions_list(#hello_extensions{renegotiation_info = RenegotiationInfo, hash_signs = HashSigns, ec_point_formats = EcPointFormats, elliptic_curves = EllipticCurves, - next_protocol_negotiation = NextProtocolNegotiation}) -> + next_protocol_negotiation = NextProtocolNegotiation, + sni = Sni}) -> [Ext || Ext <- [RenegotiationInfo, SRP, HashSigns, - EcPointFormats,EllipticCurves, NextProtocolNegotiation], Ext =/= undefined]. + EcPointFormats, EllipticCurves, NextProtocolNegotiation, Sni], Ext =/= undefined]. srp_user(#ssl_options{srp_identity = {UserName, _}}) -> #srp{username = UserName}; @@ -1146,6 +1160,13 @@ select_curve(Curves, [Curve| Rest]) -> select_curve(Curves, Rest) end. +sni(Host) -> + %% RFC 6066, Section 3: Currently, the only server names supported are + %% DNS hostnames + case inet_parse:domain(Host) of + false -> undefined; + true -> #sni{hostname = Host} + end. %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- |