diff options
Diffstat (limited to 'lib/ssl/src/ssl.erl')
| -rw-r--r-- | lib/ssl/src/ssl.erl | 154 |
1 files changed, 119 insertions, 35 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl index a298012f26..4efd13a6fa 100644 --- a/lib/ssl/src/ssl.erl +++ b/lib/ssl/src/ssl.erl @@ -39,7 +39,9 @@ ]). %% SSL/TLS protocol handling --export([cipher_suites/0, cipher_suites/1, cipher_suites/2, eccs/0, eccs/1, versions/0, +-export([cipher_suites/0, cipher_suites/1, cipher_suites/2, filter_cipher_suites/2, + prepend_cipher_suites/2, append_cipher_suites/2, + eccs/0, eccs/1, versions/0, format_error/1, renegotiate/1, prf/5, negotiated_protocol/1, connection_information/1, connection_information/2]). %% Misc @@ -379,35 +381,91 @@ negotiated_protocol(#sslsocket{pid = Pid}) -> cipher_suites() -> cipher_suites(erlang). %%-------------------------------------------------------------------- --spec cipher_suites(erlang | openssl | all) -> [ssl_cipher:old_erl_cipher_suite() | string()]. +-spec cipher_suites(erlang | openssl | all) -> + [ssl_cipher:old_erl_cipher_suite() | string()]. %% Description: Returns all supported cipher suites. %%-------------------------------------------------------------------- cipher_suites(erlang) -> - Version = tls_record:highest_protocol_version([]), - cipher_suites(erlang, Version); + [ssl_cipher:erl_suite_definition(Suite) || Suite <- available_suites(default)]; + cipher_suites(openssl) -> - Version = tls_record:highest_protocol_version([]), - cipher_suites(openssl, Version); + [ssl_cipher:openssl_suite_name(Suite) || + Suite <- available_suites(default)]; + cipher_suites(all) -> - Version = tls_record:highest_protocol_version([]), - cipher_suites(all, Version). + [ssl_cipher:erl_suite_definition(Suite) || Suite <- available_suites(all)]. %%-------------------------------------------------------------------- --spec cipher_suites(erlang | openssl | all, tls_record:tls_version() | - dtls_record:dtls_version()) -> [ssl_cipher:old_erl_cipher_suite() | string()]. -%% Description: Returns all supported cipher suites. +-spec cipher_suites(default | all | anonymous, tls_record:tls_version() | dtls_record:dtls_version() | + tls_record:tls_atom_version() | dtls_record:dtls_atom_version()) -> + [ssl_cipher:erl_cipher_suite()]. +%% Description: Returns all default and all supported cipher suites for a +%% TLS/DTLS version +%%-------------------------------------------------------------------- +cipher_suites(Base, Version) when Version == 'tlsv1.2'; + Version == 'tlsv1.1'; + Version == tlsv1; + Version == sslv3 -> + cipher_suites(Base, tls_record:protocol_version(Version)); +cipher_suites(Base, Version) when Version == 'dtlsv1.2'; + Version == 'dtlsv1'-> + cipher_suites(Base, dtls_record:protocol_version(Version)); +cipher_suites(Base, Version) -> + [ssl_cipher:suite_definition(Suite) || Suite <- supported_suites(Base, Version)]. + +%%-------------------------------------------------------------------- +-spec filter_cipher_suites([ssl_cipher:erl_cipher_suite()], + [{key_exchange | cipher | mac | prf, fun()}] | []) -> + [ssl_cipher:erl_cipher_suite()]. +%% Description: Removes cipher suites if any of the filter functions returns false +%% for any part of the cipher suite. This function also calls default filter functions +%% to make sure the cipher suite are supported by crypto. +%%-------------------------------------------------------------------- +filter_cipher_suites(Suites, Filters0) -> + #{key_exchange_filters := KexF, + cipher_filters := CipherF, + mac_filters := MacF, + prf_filters := PrfF} + = ssl_cipher:crypto_support_filters(), + Filters = #{key_exchange_filters => add_filter(proplists:get_value(key_exchange, Filters0), KexF), + cipher_filters => add_filter(proplists:get_value(cipher, Filters0), CipherF), + mac_filters => add_filter(proplists:get_value(mac, Filters0), MacF), + prf_filters => add_filter(proplists:get_value(prf, Filters0), PrfF)}, + ssl_cipher:filter_suites(Suites, Filters). +%%-------------------------------------------------------------------- +-spec prepend_cipher_suites([ssl_cipher:erl_cipher_suite()] | + [{key_exchange | cipher | mac | prf, fun()}], + [ssl_cipher:erl_cipher_suite()]) -> + [ssl_cipher:erl_cipher_suite()]. +%% Description: Make <Preferred> suites become the most prefered +%% suites that is put them at the head of the cipher suite list +%% and remove them from <Suites> if present. <Preferred> may be a +%% list of cipher suits or a list of filters in which case the +%% filters are use on Suites to extract the the preferred +%% cipher list. +%% -------------------------------------------------------------------- +prepend_cipher_suites([First | _] = Preferred, Suites0) when is_map(First) -> + Suites = Preferred ++ (Suites0 -- Preferred), + Suites; +prepend_cipher_suites(Filters, Suites) -> + Preferred = filter_cipher_suites(Suites, Filters), + Preferred ++ (Suites -- Preferred). +%%-------------------------------------------------------------------- +-spec append_cipher_suites(Deferred :: [ssl_cipher:erl_cipher_suite()] | + [{key_exchange | cipher | mac | prf, fun()}], + [ssl_cipher:erl_cipher_suite()]) -> + [ssl_cipher:erl_cipher_suite()]. +%% Description: Make <Deferred> suites suites become the +%% least prefered suites that is put them at the end of the cipher suite list +%% and removed them from <Suites> if present. +%% %%-------------------------------------------------------------------- -cipher_suites(Type, Version) when Version == 'dtlsv1'; - Version == 'dtlsv1.2' -> - cipher_suites(Type, dtls_record:protocol_version(Version)); -cipher_suites(Type, Version) when is_atom(Version) -> - cipher_suites(Type, tls_record:protocol_version(Version)); -cipher_suites(erlang, Version) -> - [ssl_cipher:erl_suite_definition(Suite) || Suite <- available_suites(default, Version)]; -cipher_suites(openssl, Version) -> - [ssl_cipher:openssl_suite_name(Suite) || Suite <- available_suites(default, Version)]; -cipher_suites(all, Version) -> - [ssl_cipher:erl_suite_definition(Suite) || Suite <- available_suites(all, Version)]. +append_cipher_suites([First | _] = Deferred, Suites0) when is_map(First)-> + Suites = (Suites0 -- Deferred) ++ Deferred, + Suites; +append_cipher_suites(Filters, Suites) -> + Deferred = filter_cipher_suites(Suites, Filters), + (Suites -- Deferred) ++ Deferred. %%-------------------------------------------------------------------- -spec eccs() -> tls_v1:curves(). @@ -661,14 +719,21 @@ tls_version({254, _} = Version) -> %%%-------------------------------------------------------------- %%% Internal functions %%%-------------------------------------------------------------------- - %% Possible filters out suites not supported by crypto -available_suites(default, Version) -> +available_suites(default) -> + Version = tls_record:highest_protocol_version([]), ssl_cipher:filter_suites(ssl_cipher:suites(Version)); - -available_suites(all, Version) -> +available_suites(all) -> + Version = tls_record:highest_protocol_version([]), ssl_cipher:filter_suites(ssl_cipher:all_suites(Version)). +supported_suites(default, Version) -> + ssl_cipher:suites(Version); +supported_suites(all, Version) -> + ssl_cipher:all_suites(Version); +supported_suites(anonymous, Version) -> + ssl_cipher:anonymous_suites(Version). + do_listen(Port, #config{transport_info = {Transport, _, _, _}} = Config, tls_connection) -> tls_socket:listen(Transport, Port, Config); @@ -778,7 +843,7 @@ handle_options(Opts0, Role, Host) -> %% Server side option reuse_session = handle_option(reuse_session, Opts, ReuseSessionFun), reuse_sessions = handle_option(reuse_sessions, Opts, true), - secure_renegotiate = handle_option(secure_renegotiate, Opts, false), + secure_renegotiate = handle_option(secure_renegotiate, Opts, true), client_renegotiation = handle_option(client_renegotiation, Opts, default_option_role(server, true, Role), server, Role), @@ -816,7 +881,6 @@ handle_options(Opts0, Role, Host) -> client, Role), crl_check = handle_option(crl_check, Opts, false), crl_cache = handle_option(crl_cache, Opts, {ssl_crl_cache, {internal, []}}), - v2_hello_compatible = handle_option(v2_hello_compatible, Opts, false), max_handshake_size = handle_option(max_handshake_size, Opts, ?DEFAULT_MAX_HANDSHAKE_SIZE) }, @@ -832,7 +896,7 @@ handle_options(Opts0, Role, Host) -> alpn_preferred_protocols, next_protocols_advertised, client_preferred_next_protocols, log_alert, server_name_indication, honor_cipher_order, padding_check, crl_check, crl_cache, - fallback, signature_algs, eccs, honor_ecc_order, beast_mitigation, v2_hello_compatible, + fallback, signature_algs, eccs, honor_ecc_order, beast_mitigation, max_handshake_size], SockOpts = lists:foldl(fun(Key, PropList) -> @@ -1069,8 +1133,6 @@ validate_option(beast_mitigation, Value) when Value == one_n_minus_one orelse Value == zero_n orelse Value == disabled -> Value; -validate_option(v2_hello_compatible, Value) when is_boolean(Value) -> - Value; validate_option(max_handshake_size, Value) when is_integer(Value) andalso Value =< ?MAX_UNIT24 -> Value; validate_option(protocol, Value = tls) -> @@ -1178,17 +1240,21 @@ handle_cipher_option(Value, Version) when is_list(Value) -> binary_cipher_suites(Version, []) -> %% Defaults to all supported suites that does %% not require explicit configuration - ssl_cipher:filter_suites(ssl_cipher:suites(tls_version(Version))); + default_binary_suites(Version); +binary_cipher_suites(Version, [Map|_] = Ciphers0) when is_map(Map) -> + Ciphers = [ssl_cipher:suite(C) || C <- Ciphers0], + binary_cipher_suites(Version, Ciphers); binary_cipher_suites(Version, [Tuple|_] = Ciphers0) when is_tuple(Tuple) -> Ciphers = [ssl_cipher:suite(tuple_to_map(C)) || C <- Ciphers0], binary_cipher_suites(Version, Ciphers); binary_cipher_suites(Version, [Cipher0 | _] = Ciphers0) when is_binary(Cipher0) -> - All = ssl_cipher:all_suites(tls_version(Version)), + All = ssl_cipher:all_suites(Version) ++ + ssl_cipher:anonymous_suites(Version), case [Cipher || Cipher <- Ciphers0, lists:member(Cipher, All)] of [] -> %% Defaults to all supported suites that does %% not require explicit configuration - ssl_cipher:filter_suites(ssl_cipher:suites(tls_version(Version))); + default_binary_suites(Version); Ciphers -> Ciphers end; @@ -1201,6 +1267,9 @@ binary_cipher_suites(Version, Ciphers0) -> Ciphers = [ssl_cipher:openssl_suite(C) || C <- string:lexemes(Ciphers0, ":")], binary_cipher_suites(Version, Ciphers). +default_binary_suites(Version) -> + ssl_cipher:filter_suites(ssl_cipher:suites(Version)). + tuple_to_map({Kex, Cipher, Mac}) -> #{key_exchange => Kex, cipher => Cipher, @@ -1209,9 +1278,19 @@ tuple_to_map({Kex, Cipher, Mac}) -> tuple_to_map({Kex, Cipher, Mac, Prf}) -> #{key_exchange => Kex, cipher => Cipher, - mac => Mac, + mac => tuple_to_map_mac(Cipher, Mac), prf => Prf}. +%% Backwards compatible +tuple_to_map_mac(aes_128_gcm, _) -> + aead; +tuple_to_map_mac(aes_256_gcm, _) -> + aead; +tuple_to_map_mac(chacha20_poly1305, _) -> + aead; +tuple_to_map_mac(_, MAC) -> + MAC. + handle_eccs_option(Value, Version) when is_list(Value) -> {_Major, Minor} = tls_version(Version), try tls_v1:ecc_curves(Minor, Value) of @@ -1490,3 +1569,8 @@ reject_alpn_next_prot_options([Opt| AlpnNextOpts], Opts) -> false -> reject_alpn_next_prot_options(AlpnNextOpts, Opts) end. + +add_filter(undefined, Filters) -> + Filters; +add_filter(Filter, Filters) -> + [Filter | Filters]. |