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-rw-r--r--lib/ssl/src/ssl_handshake.erl12
-rw-r--r--lib/ssl/test/ssl_handshake_SUITE.erl8
2 files changed, 20 insertions, 0 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index fc67d2c28d..b018332df1 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -1719,6 +1719,11 @@ dec_hello_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
dec_hello_extensions(Rest, Acc#hello_extensions{ec_point_formats =
#ec_point_formats{ec_point_format_list =
ECPointFormats}});
+
+dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
+ ExtData:Len/binary, Rest/binary>>, Acc) ->
+ <<?UINT16(_), NameList/binary>> = ExtData,
+ dec_hello_extensions(Rest, Acc#hello_extensions{sni = dec_sni(NameList)});
%% Ignore data following the ClientHello (i.e.,
%% extensions) if not understood.
@@ -1731,6 +1736,13 @@ dec_hello_extensions(_, Acc) ->
dec_hashsign(<<?BYTE(HashAlgo), ?BYTE(SignAlgo)>>) ->
{ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)}.
+%% Ignore unknown names (only host_name is supported)
+dec_sni(<<?BYTE(?SNI_NAMETYPE_HOST_NAME), ?UINT16(Len),
+ HostName:Len/binary, _/binary>>) ->
+ #sni{hostname = binary_to_list(HostName)};
+dec_sni(<<?BYTE(_), ?UINT16(Len), _:Len, Rest/binary>>) -> dec_sni(Rest);
+dec_sni(_) -> undefined.
+
decode_next_protocols({next_protocol_negotiation, Protocols}) ->
decode_next_protocols(Protocols, []).
decode_next_protocols(<<>>, Acc) ->
diff --git a/lib/ssl/test/ssl_handshake_SUITE.erl b/lib/ssl/test/ssl_handshake_SUITE.erl
index 5f36842f9e..e5e942ce1b 100644
--- a/lib/ssl/test/ssl_handshake_SUITE.erl
+++ b/lib/ssl/test/ssl_handshake_SUITE.erl
@@ -38,6 +38,7 @@ all() -> [decode_hello_handshake,
decode_supported_elliptic_curves_hello_extension_correctly,
decode_unknown_hello_extension_correctly,
encode_single_hello_sni_extension_correctly,
+ decode_single_hello_sni_extension_correctly,
select_proper_tls_1_2_rsa_default_hashsign].
%%--------------------------------------------------------------------
@@ -98,6 +99,13 @@ encode_single_hello_sni_extension_correctly(_Config) ->
Encoded = ssl_handshake:encode_hello_extensions(Exts),
HelloExt = Encoded.
+decode_single_hello_sni_extension_correctly(_Config) ->
+ Exts = #hello_extensions{sni = #sni{hostname = "test.com"}},
+ SNI = <<16#00, 16#00, 16#00, 16#0d, 16#00, 16#0b, 16#00, 16#00, 16#08,
+ $t, $e, $s, $t, $., $c, $o, $m>>,
+ Decoded = ssl_handshake:decode_hello_extensions(SNI),
+ Exts = Decoded.
+
select_proper_tls_1_2_rsa_default_hashsign(_Config) ->
% RFC 5246 section 7.4.1.4.1 tells to use {sha1,rsa} as default signature_algorithm for RSA key exchanges
{sha, rsa} = ssl_handshake:select_hashsign_algs(undefined, ?rsaEncryption, {3,3}),