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-rw-r--r--lib/ssl/src/dtls_handshake.erl2
-rw-r--r--lib/ssl/src/ssl_handshake.erl41
-rw-r--r--lib/ssl/src/ssl_handshake.hrl19
-rw-r--r--lib/ssl/src/ssl_internal.hrl3
-rw-r--r--lib/ssl/src/tls.erl9
-rw-r--r--lib/ssl/src/tls_handshake.erl2
6 files changed, 61 insertions, 15 deletions
diff --git a/lib/ssl/src/dtls_handshake.erl b/lib/ssl/src/dtls_handshake.erl
index 26e8ce7503..d0f9649f9f 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -46,7 +46,7 @@ client_hello(Host, Port, Cookie, ConnectionStates,
SecParams = Pending#connection_state.security_parameters,
CipherSuites = ssl_handshake:available_suites(UserSuites, Version),
- Extensions = ssl_handshake:client_hello_extensions(Version, CipherSuites,
+ Extensions = ssl_handshake:client_hello_extensions(Host, Version, CipherSuites,
SslOpts, ConnectionStates, Renegotiation),
Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index b18452a8f2..9142a260b1 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, SslOpts#ssl_options.server_name_indication)}.
%%--------------------------------------------------------------------
-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};
@@ -1145,7 +1159,20 @@ select_curve(Curves, [Curve| Rest]) ->
false ->
select_curve(Curves, Rest)
end.
-
+%% RFC 6066, Section 3: Currently, the only server names supported are
+%% DNS hostnames
+sni(_, disable) ->
+ undefined;
+sni(Host, undefined) ->
+ sni1(Host);
+sni(_Host, SNIOption) ->
+ sni1(SNIOption).
+
+sni1(Hostname) ->
+ case inet_parse:domain(Hostname) of
+ false -> undefined;
+ true -> #sni{hostname = Hostname}
+ end.
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
diff --git a/lib/ssl/src/ssl_handshake.hrl b/lib/ssl/src/ssl_handshake.hrl
index f25b0df806..75160526b9 100644
--- a/lib/ssl/src/ssl_handshake.hrl
+++ b/lib/ssl/src/ssl_handshake.hrl
@@ -98,7 +98,8 @@
next_protocol_negotiation = undefined, % [binary()]
srp,
ec_point_formats,
- elliptic_curves
+ elliptic_curves,
+ sni
}).
-record(server_hello, {
@@ -339,6 +340,19 @@
-define(NAMED_CURVE, 3).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Server name indication RFC 6066 section 3
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-define(SNI_EXT, 16#0000).
+
+%% enum { host_name(0), (255) } NameType;
+-define(SNI_NAMETYPE_HOST_NAME, 0).
+
+-record(sni, {
+ hostname = undefined
+ }).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Dialyzer types
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -353,6 +367,3 @@
-endif. % -ifdef(ssl_handshake).
-
-
-
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index 96e3280fb5..a582b8c290 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -115,7 +115,8 @@
erl_dist = false,
next_protocols_advertised = undefined, %% [binary()],
next_protocol_selector = undefined, %% fun([binary()]) -> binary())
- log_alert
+ log_alert,
+ server_name_indication = undefined
}).
-record(socket_options,
diff --git a/lib/ssl/src/tls.erl b/lib/ssl/src/tls.erl
index b220a48f73..f1747dc69e 100644
--- a/lib/ssl/src/tls.erl
+++ b/lib/ssl/src/tls.erl
@@ -664,7 +664,8 @@ handle_options(Opts0, _Role) ->
next_protocol_selector =
make_next_protocol_selector(
handle_option(client_preferred_next_protocols, Opts, undefined)),
- log_alert = handle_option(log_alert, Opts, true)
+ log_alert = handle_option(log_alert, Opts, true),
+ server_name_indication = handle_option(server_name_indication, Opts, undefined)
},
CbInfo = proplists:get_value(cb_info, Opts, {gen_tcp, tcp, tcp_closed, tcp_error}),
@@ -855,6 +856,12 @@ validate_option(next_protocols_advertised = Opt, Value) when is_list(Value) ->
validate_option(next_protocols_advertised, undefined) ->
undefined;
+validate_option(server_name_indication, Value) when is_list(Value) ->
+ Value;
+validate_option(server_name_indication, disable) ->
+ disable;
+validate_option(server_name_indication, undefined) ->
+ undefined;
validate_option(Opt, Value) ->
throw({error, {options, {Opt, Value}}}).
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index ecbca83e10..262f2d929f 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -56,7 +56,7 @@ client_hello(Host, Port, ConnectionStates,
SecParams = Pending#connection_state.security_parameters,
CipherSuites = ssl_handshake:available_suites(UserSuites, Version),
- Extensions = ssl_handshake:client_hello_extensions(Version, CipherSuites,
+ Extensions = ssl_handshake:client_hello_extensions(Host, Version, CipherSuites,
SslOpts, ConnectionStates, Renegotiation),
Id = ssl_session:client_id({Host, Port, SslOpts}, Cache, CacheCb, OwnCert),
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 08:56:12 +0000