diff options
Diffstat (limited to 'lib/ssl/src/ssl.erl')
| -rw-r--r-- | lib/ssl/src/ssl.erl | 84 |
1 files changed, 78 insertions, 6 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl index 40d933a256..9ed6acd43a 100644 --- a/lib/ssl/src/ssl.erl +++ b/lib/ssl/src/ssl.erl @@ -31,7 +31,8 @@ controlling_process/2, listen/2, pid/1, peername/1, peercert/1, recv/2, recv/3, send/2, getopts/2, setopts/2, sockname/1, versions/0, session_info/1, format_error/1, - renegotiate/1, prf/5, clear_pem_cache/0, random_bytes/1]). + renegotiate/1, prf/5, clear_pem_cache/0, random_bytes/1, negotiated_next_protocol/1]). + -deprecated({pid, 1, next_major_release}). @@ -65,7 +66,9 @@ {keyfile, path()} | {password, string()} | {cacerts, [Der::binary()]} | {cacertfile, path()} | {dh, Der::binary()} | {dhfile, path()} | {ciphers, ciphers()} | {ssl_imp, ssl_imp()} | {reuse_sessions, boolean()} | - {reuse_session, fun()} | {hibernate_after, integer()|undefined}. + {reuse_session, fun()} | {hibernate_after, integer()|undefined} | + {next_protocols_advertised, list(binary())} | + {client_preferred_next_protocols, binary(), client | server, list(binary())}. -type verify_type() :: verify_none | verify_peer. -type path() :: string(). @@ -314,6 +317,14 @@ suite_definition(S) -> {KeyExchange, Cipher, Hash}. %%-------------------------------------------------------------------- +-spec negotiated_next_protocol(#sslsocket{}) -> {ok, binary()} | {error, reason()}. +%% +%% Description: Returns the next protocol that has been negotiated. If no +%% protocol has been negotiated will return {error, next_protocol_not_negotiated} +%%-------------------------------------------------------------------- +negotiated_next_protocol(#sslsocket{fd = new_ssl, pid = Pid}) -> + ssl_connection:negotiated_next_protocol(Pid). + -spec cipher_suites() -> [erl_cipher_suite()]. -spec cipher_suites(erlang | openssl) -> [erl_cipher_suite()] | [string()]. @@ -594,7 +605,9 @@ handle_options(Opts0, _Role) -> renegotiate_at = handle_option(renegotiate_at, Opts, ?DEFAULT_RENEGOTIATE_AT), debug = handle_option(debug, Opts, []), hibernate_after = handle_option(hibernate_after, Opts, undefined), - erl_dist = handle_option(erl_dist, Opts, false) + erl_dist = handle_option(erl_dist, Opts, false), + next_protocols_advertised = handle_option(next_protocols_advertised, Opts, undefined), + next_protocol_selector = make_next_protocol_selector(handle_option(client_preferred_next_protocols, Opts, undefined)) }, CbInfo = proplists:get_value(cb_info, Opts, {gen_tcp, tcp, tcp_closed, tcp_error}), @@ -603,7 +616,8 @@ handle_options(Opts0, _Role) -> depth, cert, certfile, key, keyfile, password, cacerts, cacertfile, dh, dhfile, ciphers, debug, reuse_session, reuse_sessions, ssl_imp, - cb_info, renegotiate_at, secure_renegotiate, hibernate_after, erl_dist], + cb_info, renegotiate_at, secure_renegotiate, hibernate_after, erl_dist, next_protocols_advertised, + client_preferred_next_protocols], SockOpts = lists:foldl(fun(Key, PropList) -> proplists:delete(Key, PropList) @@ -728,12 +742,42 @@ validate_option(hibernate_after, undefined) -> undefined; validate_option(hibernate_after, Value) when is_integer(Value), Value >= 0 -> Value; -validate_option(erl_dist,Value) when Value == true; +validate_option(erl_dist,Value) when Value == true; Value == false -> Value; +validate_option(client_preferred_next_protocols, {FallbackProtocol, Order, PreferredProtocols} = Value) + when is_list(PreferredProtocols), is_binary(FallbackProtocol), + byte_size(FallbackProtocol) > 0, byte_size(FallbackProtocol) < 256 -> + validate_binary_list(client_preferred_next_protocols, PreferredProtocols), + validate_npn_ordering(Order), + Value; +validate_option(client_preferred_next_protocols, undefined) -> + undefined; +validate_option(next_protocols_advertised, Value) when is_list(Value) -> + validate_binary_list(next_protocols_advertised, Value), + Value; +validate_option(next_protocols_advertised, undefined) -> + undefined; validate_option(Opt, Value) -> throw({error, {eoptions, {Opt, Value}}}). - + +validate_npn_ordering(client) -> + ok; +validate_npn_ordering(server) -> + ok; +validate_npn_ordering(Value) -> + throw({error, {eoptions, {client_preferred_next_protocols, Value}}}). + +validate_binary_list(Opt, List) -> + lists:foreach( + fun(Bin) when is_binary(Bin), + byte_size(Bin) > 0, + byte_size(Bin) < 256 -> + ok; + (Bin) -> + throw({error, {eoptions, {Opt, Bin}}}) + end, List). + validate_versions([], Versions) -> Versions; validate_versions([Version | Rest], Versions) when Version == 'tlsv1.2'; @@ -839,6 +883,34 @@ cipher_suites(Version, Ciphers0) -> no_format(Error) -> lists:flatten(io_lib:format("No format string for error: \"~p\" available.", [Error])). + +detect(_Pred, []) -> + undefined; +detect(Pred, [H|T]) -> + case Pred(H) of + true -> + H; + _ -> + detect(Pred, T) + end. + +make_next_protocol_selector(undefined) -> + undefined; +make_next_protocol_selector({FallbackProtocol, client, AllProtocols}) -> + fun(AdvertisedProtocols) -> + case detect(fun(PreferredProtocol) -> lists:member(PreferredProtocol, AdvertisedProtocols) end, AllProtocols) of + undefined -> FallbackProtocol; + PreferredProtocol -> PreferredProtocol + end + end; + +make_next_protocol_selector({FallbackProtocol, server, AllProtocols}) -> + fun(AdvertisedProtocols) -> + case detect(fun(PreferredProtocol) -> lists:member(PreferredProtocol, AllProtocols) end, AdvertisedProtocols) of + undefined -> FallbackProtocol; + PreferredProtocol -> PreferredProtocol + end + end. %% Only used to remove exit messages from old ssl %% First is a nonsense clause to provide some |